* [PATCH v3 01/13] RDMA/iser: Remove support for FMR memory registration
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 02/13] RDMA/srp: " Jason Gunthorpe
` (12 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev
Cc: Israel Rukshin, Max Gurtovoy, oren, Sagi Grimberg, shlomin, vladimirk
From: Israel Rukshin <israelr@mellanox.com>
FMR is not supported on most recent RDMA devices (that use fast memory
registration mechanism). Also, FMR was recently removed from NFS/RDMA
ULP.
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---
drivers/infiniband/ulp/iser/iscsi_iser.h | 79 +-------
drivers/infiniband/ulp/iser/iser_initiator.c | 19 +-
drivers/infiniband/ulp/iser/iser_memory.c | 188 +------------------
drivers/infiniband/ulp/iser/iser_verbs.c | 126 ++-----------
4 files changed, 40 insertions(+), 372 deletions(-)
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index 029c00163442d6..1d77c7f42e38be 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -65,7 +65,6 @@
#include <linux/in6.h>
#include <rdma/ib_verbs.h>
-#include <rdma/ib_fmr_pool.h>
#include <rdma/rdma_cm.h>
#define DRV_NAME "iser"
@@ -312,33 +311,6 @@ struct iser_comp {
int active_qps;
};
-/**
- * struct iser_reg_ops - Memory registration operations
- * per-device registration schemes
- *
- * @alloc_reg_res: Allocate registration resources
- * @free_reg_res: Free registration resources
- * @reg_mem: Register memory buffers
- * @unreg_mem: Un-register memory buffers
- * @reg_desc_get: Get a registration descriptor for pool
- * @reg_desc_put: Get a registration descriptor to pool
- */
-struct iser_reg_ops {
- int (*alloc_reg_res)(struct ib_conn *ib_conn,
- unsigned cmds_max,
- unsigned int size);
- void (*free_reg_res)(struct ib_conn *ib_conn);
- int (*reg_mem)(struct iscsi_iser_task *iser_task,
- struct iser_data_buf *mem,
- struct iser_reg_resources *rsc,
- struct iser_mem_reg *reg);
- void (*unreg_mem)(struct iscsi_iser_task *iser_task,
- enum iser_data_dir cmd_dir);
- struct iser_fr_desc * (*reg_desc_get)(struct ib_conn *ib_conn);
- void (*reg_desc_put)(struct ib_conn *ib_conn,
- struct iser_fr_desc *desc);
-};
-
/**
* struct iser_device - iSER device handle
*
@@ -351,8 +323,6 @@ struct iser_reg_ops {
* @comps_used: Number of completion contexts used, Min between online
* cpus and device max completion vectors
* @comps: Dinamically allocated array of completion handlers
- * @reg_ops: Registration ops
- * @remote_inv_sup: Remote invalidate is supported on this device
*/
struct iser_device {
struct ib_device *ib_device;
@@ -362,26 +332,18 @@ struct iser_device {
int refcount;
int comps_used;
struct iser_comp *comps;
- const struct iser_reg_ops *reg_ops;
- bool remote_inv_sup;
};
/**
* struct iser_reg_resources - Fast registration resources
*
* @mr: memory region
- * @fmr_pool: pool of fmrs
* @sig_mr: signature memory region
- * @page_vec: fast reg page list used by fmr pool
* @mr_valid: is mr valid indicator
*/
struct iser_reg_resources {
- union {
- struct ib_mr *mr;
- struct ib_fmr_pool *fmr_pool;
- };
+ struct ib_mr *mr;
struct ib_mr *sig_mr;
- struct iser_page_vec *page_vec;
u8 mr_valid:1;
};
@@ -403,7 +365,7 @@ struct iser_fr_desc {
* struct iser_fr_pool - connection fast registration pool
*
* @list: list of fastreg descriptors
- * @lock: protects fmr/fastreg pool
+ * @lock: protects fastreg pool
* @size: size of the pool
*/
struct iser_fr_pool {
@@ -518,12 +480,6 @@ struct iscsi_iser_task {
struct iser_data_buf prot[ISER_DIRS_NUM];
};
-struct iser_page_vec {
- u64 *pages;
- int npages;
- struct ib_mr fake_mr;
-};
-
/**
* struct iser_global - iSER global context
*
@@ -548,8 +504,6 @@ extern int iser_pi_guard;
extern unsigned int iser_max_sectors;
extern bool iser_always_reg;
-int iser_assign_reg_ops(struct iser_device *device);
-
int iser_send_control(struct iscsi_conn *conn,
struct iscsi_task *task);
@@ -591,22 +545,17 @@ void iser_finalize_rdma_unaligned_sg(struct iscsi_iser_task *iser_task,
struct iser_data_buf *mem,
enum iser_data_dir cmd_dir);
-int iser_reg_rdma_mem(struct iscsi_iser_task *task,
- enum iser_data_dir dir,
- bool all_imm);
-void iser_unreg_rdma_mem(struct iscsi_iser_task *task,
- enum iser_data_dir dir);
+int iser_reg_mem_fastreg(struct iscsi_iser_task *task,
+ enum iser_data_dir dir,
+ bool all_imm);
+void iser_unreg_mem_fastreg(struct iscsi_iser_task *task,
+ enum iser_data_dir dir);
int iser_connect(struct iser_conn *iser_conn,
struct sockaddr *src_addr,
struct sockaddr *dst_addr,
int non_blocking);
-void iser_unreg_mem_fmr(struct iscsi_iser_task *iser_task,
- enum iser_data_dir cmd_dir);
-void iser_unreg_mem_fastreg(struct iscsi_iser_task *iser_task,
- enum iser_data_dir cmd_dir);
-
int iser_post_recvl(struct iser_conn *iser_conn);
int iser_post_recvm(struct iser_conn *iser_conn, int count);
int iser_post_send(struct ib_conn *ib_conn, struct iser_tx_desc *tx_desc,
@@ -625,26 +574,12 @@ int iser_initialize_task_headers(struct iscsi_task *task,
struct iser_tx_desc *tx_desc);
int iser_alloc_rx_descriptors(struct iser_conn *iser_conn,
struct iscsi_session *session);
-int iser_alloc_fmr_pool(struct ib_conn *ib_conn,
- unsigned cmds_max,
- unsigned int size);
-void iser_free_fmr_pool(struct ib_conn *ib_conn);
int iser_alloc_fastreg_pool(struct ib_conn *ib_conn,
unsigned cmds_max,
unsigned int size);
void iser_free_fastreg_pool(struct ib_conn *ib_conn);
u8 iser_check_task_pi_status(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir, sector_t *sector);
-struct iser_fr_desc *
-iser_reg_desc_get_fr(struct ib_conn *ib_conn);
-void
-iser_reg_desc_put_fr(struct ib_conn *ib_conn,
- struct iser_fr_desc *desc);
-struct iser_fr_desc *
-iser_reg_desc_get_fmr(struct ib_conn *ib_conn);
-void
-iser_reg_desc_put_fmr(struct ib_conn *ib_conn,
- struct iser_fr_desc *desc);
static inline struct iser_conn *
to_iser_conn(struct ib_conn *ib_conn)
diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c
index 4a7045bb0831c3..27a6f75a9912ff 100644
--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -72,7 +72,7 @@ static int iser_prepare_read_cmd(struct iscsi_task *task)
return err;
}
- err = iser_reg_rdma_mem(iser_task, ISER_DIR_IN, false);
+ err = iser_reg_mem_fastreg(iser_task, ISER_DIR_IN, false);
if (err) {
iser_err("Failed to set up Data-IN RDMA\n");
return err;
@@ -126,8 +126,8 @@ iser_prepare_write_cmd(struct iscsi_task *task,
return err;
}
- err = iser_reg_rdma_mem(iser_task, ISER_DIR_OUT,
- buf_out->data_len == imm_sz);
+ err = iser_reg_mem_fastreg(iser_task, ISER_DIR_OUT,
+ buf_out->data_len == imm_sz);
if (err != 0) {
iser_err("Failed to register write cmd RDMA mem\n");
return err;
@@ -250,8 +250,8 @@ int iser_alloc_rx_descriptors(struct iser_conn *iser_conn,
iser_conn->qp_max_recv_dtos_mask = session->cmds_max - 1; /* cmds_max is 2^N */
iser_conn->min_posted_rx = iser_conn->qp_max_recv_dtos >> 2;
- if (device->reg_ops->alloc_reg_res(ib_conn, session->scsi_cmds_max,
- iser_conn->pages_per_mr))
+ if (iser_alloc_fastreg_pool(ib_conn, session->scsi_cmds_max,
+ iser_conn->pages_per_mr))
goto create_rdma_reg_res_failed;
if (iser_alloc_login_buf(iser_conn))
@@ -293,7 +293,7 @@ int iser_alloc_rx_descriptors(struct iser_conn *iser_conn,
rx_desc_alloc_fail:
iser_free_login_buf(iser_conn);
alloc_login_buf_fail:
- device->reg_ops->free_reg_res(ib_conn);
+ iser_free_fastreg_pool(ib_conn);
create_rdma_reg_res_failed:
iser_err("failed allocating rx descriptors / data buffers\n");
return -ENOMEM;
@@ -306,8 +306,7 @@ void iser_free_rx_descriptors(struct iser_conn *iser_conn)
struct ib_conn *ib_conn = &iser_conn->ib_conn;
struct iser_device *device = ib_conn->device;
- if (device->reg_ops->free_reg_res)
- device->reg_ops->free_reg_res(ib_conn);
+ iser_free_fastreg_pool(ib_conn);
rx_desc = iser_conn->rx_descs;
for (i = 0; i < iser_conn->qp_max_recv_dtos; i++, rx_desc++)
@@ -768,7 +767,7 @@ void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)
int prot_count = scsi_prot_sg_count(iser_task->sc);
if (iser_task->dir[ISER_DIR_IN]) {
- iser_unreg_rdma_mem(iser_task, ISER_DIR_IN);
+ iser_unreg_mem_fastreg(iser_task, ISER_DIR_IN);
iser_dma_unmap_task_data(iser_task,
&iser_task->data[ISER_DIR_IN],
DMA_FROM_DEVICE);
@@ -779,7 +778,7 @@ void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)
}
if (iser_task->dir[ISER_DIR_OUT]) {
- iser_unreg_rdma_mem(iser_task, ISER_DIR_OUT);
+ iser_unreg_mem_fastreg(iser_task, ISER_DIR_OUT);
iser_dma_unmap_task_data(iser_task,
&iser_task->data[ISER_DIR_OUT],
DMA_TO_DEVICE);
diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c
index 999ef7cdd05e42..d4e057fac219b8 100644
--- a/drivers/infiniband/ulp/iser/iser_memory.c
+++ b/drivers/infiniband/ulp/iser/iser_memory.c
@@ -38,62 +38,13 @@
#include <linux/scatterlist.h>
#include "iscsi_iser.h"
-static
-int iser_fast_reg_fmr(struct iscsi_iser_task *iser_task,
- struct iser_data_buf *mem,
- struct iser_reg_resources *rsc,
- struct iser_mem_reg *mem_reg);
-static
-int iser_fast_reg_mr(struct iscsi_iser_task *iser_task,
- struct iser_data_buf *mem,
- struct iser_reg_resources *rsc,
- struct iser_mem_reg *mem_reg);
-
-static const struct iser_reg_ops fastreg_ops = {
- .alloc_reg_res = iser_alloc_fastreg_pool,
- .free_reg_res = iser_free_fastreg_pool,
- .reg_mem = iser_fast_reg_mr,
- .unreg_mem = iser_unreg_mem_fastreg,
- .reg_desc_get = iser_reg_desc_get_fr,
- .reg_desc_put = iser_reg_desc_put_fr,
-};
-
-static const struct iser_reg_ops fmr_ops = {
- .alloc_reg_res = iser_alloc_fmr_pool,
- .free_reg_res = iser_free_fmr_pool,
- .reg_mem = iser_fast_reg_fmr,
- .unreg_mem = iser_unreg_mem_fmr,
- .reg_desc_get = iser_reg_desc_get_fmr,
- .reg_desc_put = iser_reg_desc_put_fmr,
-};
void iser_reg_comp(struct ib_cq *cq, struct ib_wc *wc)
{
iser_err_comp(wc, "memreg");
}
-int iser_assign_reg_ops(struct iser_device *device)
-{
- struct ib_device *ib_dev = device->ib_device;
-
- /* Assign function handles - based on FMR support */
- if (ib_dev->ops.alloc_fmr && ib_dev->ops.dealloc_fmr &&
- ib_dev->ops.map_phys_fmr && ib_dev->ops.unmap_fmr) {
- iser_info("FMR supported, using FMR for registration\n");
- device->reg_ops = &fmr_ops;
- } else if (ib_dev->attrs.device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS) {
- iser_info("FastReg supported, using FastReg for registration\n");
- device->reg_ops = &fastreg_ops;
- device->remote_inv_sup = iser_always_reg;
- } else {
- iser_err("IB device does not support FMRs nor FastRegs, can't register memory\n");
- return -1;
- }
-
- return 0;
-}
-
-struct iser_fr_desc *
+static struct iser_fr_desc *
iser_reg_desc_get_fr(struct ib_conn *ib_conn)
{
struct iser_fr_pool *fr_pool = &ib_conn->fr_pool;
@@ -109,7 +60,7 @@ iser_reg_desc_get_fr(struct ib_conn *ib_conn)
return desc;
}
-void
+static void
iser_reg_desc_put_fr(struct ib_conn *ib_conn,
struct iser_fr_desc *desc)
{
@@ -121,44 +72,6 @@ iser_reg_desc_put_fr(struct ib_conn *ib_conn,
spin_unlock_irqrestore(&fr_pool->lock, flags);
}
-struct iser_fr_desc *
-iser_reg_desc_get_fmr(struct ib_conn *ib_conn)
-{
- struct iser_fr_pool *fr_pool = &ib_conn->fr_pool;
-
- return list_first_entry(&fr_pool->list,
- struct iser_fr_desc, list);
-}
-
-void
-iser_reg_desc_put_fmr(struct ib_conn *ib_conn,
- struct iser_fr_desc *desc)
-{
-}
-
-static void iser_data_buf_dump(struct iser_data_buf *data,
- struct ib_device *ibdev)
-{
- struct scatterlist *sg;
- int i;
-
- for_each_sg(data->sg, sg, data->dma_nents, i)
- iser_dbg("sg[%d] dma_addr:0x%lX page:0x%p "
- "off:0x%x sz:0x%x dma_len:0x%x\n",
- i, (unsigned long)sg_dma_address(sg),
- sg_page(sg), sg->offset, sg->length, sg_dma_len(sg));
-}
-
-static void iser_dump_page_vec(struct iser_page_vec *page_vec)
-{
- int i;
-
- iser_err("page vec npages %d data length %lld\n",
- page_vec->npages, page_vec->fake_mr.length);
- for (i = 0; i < page_vec->npages; i++)
- iser_err("vec[%d]: %llx\n", i, page_vec->pages[i]);
-}
-
int iser_dma_map_task_data(struct iscsi_iser_task *iser_task,
struct iser_data_buf *data,
enum iser_data_dir iser_dir,
@@ -213,84 +126,9 @@ iser_reg_dma(struct iser_device *device, struct iser_data_buf *mem,
return 0;
}
-static int iser_set_page(struct ib_mr *mr, u64 addr)
-{
- struct iser_page_vec *page_vec =
- container_of(mr, struct iser_page_vec, fake_mr);
-
- page_vec->pages[page_vec->npages++] = addr;
-
- return 0;
-}
-
-static
-int iser_fast_reg_fmr(struct iscsi_iser_task *iser_task,
- struct iser_data_buf *mem,
- struct iser_reg_resources *rsc,
- struct iser_mem_reg *reg)
-{
- struct ib_conn *ib_conn = &iser_task->iser_conn->ib_conn;
- struct iser_device *device = ib_conn->device;
- struct iser_page_vec *page_vec = rsc->page_vec;
- struct ib_fmr_pool *fmr_pool = rsc->fmr_pool;
- struct ib_pool_fmr *fmr;
- int ret, plen;
-
- page_vec->npages = 0;
- page_vec->fake_mr.page_size = SZ_4K;
- plen = ib_sg_to_pages(&page_vec->fake_mr, mem->sg,
- mem->dma_nents, NULL, iser_set_page);
- if (unlikely(plen < mem->dma_nents)) {
- iser_err("page vec too short to hold this SG\n");
- iser_data_buf_dump(mem, device->ib_device);
- iser_dump_page_vec(page_vec);
- return -EINVAL;
- }
-
- fmr = ib_fmr_pool_map_phys(fmr_pool, page_vec->pages,
- page_vec->npages, page_vec->pages[0]);
- if (IS_ERR(fmr)) {
- ret = PTR_ERR(fmr);
- iser_err("ib_fmr_pool_map_phys failed: %d\n", ret);
- return ret;
- }
-
- reg->sge.lkey = fmr->fmr->lkey;
- reg->rkey = fmr->fmr->rkey;
- reg->sge.addr = page_vec->fake_mr.iova;
- reg->sge.length = page_vec->fake_mr.length;
- reg->mem_h = fmr;
-
- iser_dbg("fmr reg: lkey=0x%x, rkey=0x%x, addr=0x%llx,"
- " length=0x%x\n", reg->sge.lkey, reg->rkey,
- reg->sge.addr, reg->sge.length);
-
- return 0;
-}
-
-/**
- * Unregister (previosuly registered using FMR) memory.
- * If memory is non-FMR does nothing.
- */
-void iser_unreg_mem_fmr(struct iscsi_iser_task *iser_task,
- enum iser_data_dir cmd_dir)
-{
- struct iser_mem_reg *reg = &iser_task->rdma_reg[cmd_dir];
-
- if (!reg->mem_h)
- return;
-
- iser_dbg("PHYSICAL Mem.Unregister mem_h %p\n", reg->mem_h);
-
- ib_fmr_pool_unmap((struct ib_pool_fmr *)reg->mem_h);
-
- reg->mem_h = NULL;
-}
-
void iser_unreg_mem_fastreg(struct iscsi_iser_task *iser_task,
enum iser_data_dir cmd_dir)
{
- struct iser_device *device = iser_task->iser_conn->ib_conn.device;
struct iser_mem_reg *reg = &iser_task->rdma_reg[cmd_dir];
struct iser_fr_desc *desc;
struct ib_mr_status mr_status;
@@ -312,7 +150,7 @@ void iser_unreg_mem_fastreg(struct iscsi_iser_task *iser_task,
ib_check_mr_status(desc->rsc.sig_mr, IB_MR_CHECK_SIG_STATUS,
&mr_status);
}
- device->reg_ops->reg_desc_put(&iser_task->iser_conn->ib_conn, desc);
+ iser_reg_desc_put_fr(&iser_task->iser_conn->ib_conn, reg->mem_h);
reg->mem_h = NULL;
}
@@ -509,15 +347,14 @@ iser_reg_data_sg(struct iscsi_iser_task *task,
if (use_dma_key)
return iser_reg_dma(device, mem, reg);
- return device->reg_ops->reg_mem(task, mem, &desc->rsc, reg);
+ return iser_fast_reg_mr(task, mem, &desc->rsc, reg);
}
-int iser_reg_rdma_mem(struct iscsi_iser_task *task,
- enum iser_data_dir dir,
- bool all_imm)
+int iser_reg_mem_fastreg(struct iscsi_iser_task *task,
+ enum iser_data_dir dir,
+ bool all_imm)
{
struct ib_conn *ib_conn = &task->iser_conn->ib_conn;
- struct iser_device *device = ib_conn->device;
struct iser_data_buf *mem = &task->data[dir];
struct iser_mem_reg *reg = &task->rdma_reg[dir];
struct iser_fr_desc *desc = NULL;
@@ -528,7 +365,7 @@ int iser_reg_rdma_mem(struct iscsi_iser_task *task,
scsi_get_prot_op(task->sc) == SCSI_PROT_NORMAL;
if (!use_dma_key) {
- desc = device->reg_ops->reg_desc_get(ib_conn);
+ desc = iser_reg_desc_get_fr(ib_conn);
reg->mem_h = desc;
}
@@ -549,15 +386,8 @@ int iser_reg_rdma_mem(struct iscsi_iser_task *task,
err_reg:
if (desc)
- device->reg_ops->reg_desc_put(ib_conn, desc);
+ iser_reg_desc_put_fr(ib_conn, desc);
return err;
}
-void iser_unreg_rdma_mem(struct iscsi_iser_task *task,
- enum iser_data_dir dir)
-{
- struct iser_device *device = task->iser_conn->ib_conn.device;
-
- device->reg_ops->unreg_mem(task, dir);
-}
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index 127887c6c03fb9..c1f44c41f501fd 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -68,11 +68,12 @@ static void iser_event_handler(struct ib_event_handler *handler,
static int iser_create_device_ib_res(struct iser_device *device)
{
struct ib_device *ib_dev = device->ib_device;
- int ret, i, max_cqe;
+ int i, max_cqe;
- ret = iser_assign_reg_ops(device);
- if (ret)
- return ret;
+ if (!(ib_dev->attrs.device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS)) {
+ iser_err("IB device does not support memory registrations\n");
+ return -1;
+ }
device->comps_used = min_t(int, num_online_cpus(),
ib_dev->num_comp_vectors);
@@ -147,96 +148,6 @@ static void iser_free_device_ib_res(struct iser_device *device)
device->pd = NULL;
}
-/**
- * iser_alloc_fmr_pool - Creates FMR pool and page_vector
- * @ib_conn: connection RDMA resources
- * @cmds_max: max number of SCSI commands for this connection
- * @size: max number of pages per map request
- *
- * Return: 0 on success, or errno code on failure
- */
-int iser_alloc_fmr_pool(struct ib_conn *ib_conn,
- unsigned cmds_max,
- unsigned int size)
-{
- struct iser_device *device = ib_conn->device;
- struct iser_fr_pool *fr_pool = &ib_conn->fr_pool;
- struct iser_page_vec *page_vec;
- struct iser_fr_desc *desc;
- struct ib_fmr_pool *fmr_pool;
- struct ib_fmr_pool_param params;
- int ret;
-
- INIT_LIST_HEAD(&fr_pool->list);
- spin_lock_init(&fr_pool->lock);
-
- desc = kzalloc(sizeof(*desc), GFP_KERNEL);
- if (!desc)
- return -ENOMEM;
-
- page_vec = kmalloc(sizeof(*page_vec) + (sizeof(u64) * size),
- GFP_KERNEL);
- if (!page_vec) {
- ret = -ENOMEM;
- goto err_frpl;
- }
-
- page_vec->pages = (u64 *)(page_vec + 1);
-
- params.page_shift = ilog2(SZ_4K);
- params.max_pages_per_fmr = size;
- /* make the pool size twice the max number of SCSI commands *
- * the ML is expected to queue, watermark for unmap at 50% */
- params.pool_size = cmds_max * 2;
- params.dirty_watermark = cmds_max;
- params.cache = 0;
- params.flush_function = NULL;
- params.access = (IB_ACCESS_LOCAL_WRITE |
- IB_ACCESS_REMOTE_WRITE |
- IB_ACCESS_REMOTE_READ);
-
- fmr_pool = ib_create_fmr_pool(device->pd, ¶ms);
- if (IS_ERR(fmr_pool)) {
- ret = PTR_ERR(fmr_pool);
- iser_err("FMR allocation failed, err %d\n", ret);
- goto err_fmr;
- }
-
- desc->rsc.page_vec = page_vec;
- desc->rsc.fmr_pool = fmr_pool;
- list_add(&desc->list, &fr_pool->list);
-
- return 0;
-
-err_fmr:
- kfree(page_vec);
-err_frpl:
- kfree(desc);
-
- return ret;
-}
-
-/**
- * iser_free_fmr_pool - releases the FMR pool and page vec
- * @ib_conn: connection RDMA resources
- */
-void iser_free_fmr_pool(struct ib_conn *ib_conn)
-{
- struct iser_fr_pool *fr_pool = &ib_conn->fr_pool;
- struct iser_fr_desc *desc;
-
- desc = list_first_entry(&fr_pool->list,
- struct iser_fr_desc, list);
- list_del(&desc->list);
-
- iser_info("freeing conn %p fmr pool %p\n",
- ib_conn, desc->rsc.fmr_pool);
-
- ib_destroy_fmr_pool(desc->rsc.fmr_pool);
- kfree(desc->rsc.page_vec);
- kfree(desc);
-}
-
static struct iser_fr_desc *
iser_create_fastreg_desc(struct iser_device *device,
struct ib_pd *pd,
@@ -667,13 +578,12 @@ iser_calc_scsi_params(struct iser_conn *iser_conn,
u32 max_num_sg;
/*
- * FRs without SG_GAPS or FMRs can only map up to a (device) page per
- * entry, but if the first entry is misaligned we'll end up using two
- * entries (head and tail) for a single page worth data, so one
- * additional entry is required.
+ * FRs without SG_GAPS can only map up to a (device) page per entry,
+ * but if the first entry is misaligned we'll end up using two entries
+ * (head and tail) for a single page worth data, so one additional
+ * entry is required.
*/
- if ((attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS) &&
- (attr->device_cap_flags & IB_DEVICE_SG_GAPS_REG))
+ if (attr->device_cap_flags & IB_DEVICE_SG_GAPS_REG)
reserved_mr_pages = 0;
else
reserved_mr_pages = 1;
@@ -684,14 +594,8 @@ iser_calc_scsi_params(struct iser_conn *iser_conn,
max_num_sg = attr->max_fast_reg_page_list_len;
sg_tablesize = DIV_ROUND_UP(max_sectors * SECTOR_SIZE, SZ_4K);
- if (attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS)
- sup_sg_tablesize =
- min_t(
- uint, ISCSI_ISER_MAX_SG_TABLESIZE,
- max_num_sg - reserved_mr_pages);
- else
- sup_sg_tablesize = ISCSI_ISER_MAX_SG_TABLESIZE;
-
+ sup_sg_tablesize = min_t(uint, ISCSI_ISER_MAX_SG_TABLESIZE,
+ max_num_sg - reserved_mr_pages);
iser_conn->scsi_sg_tablesize = min(sg_tablesize, sup_sg_tablesize);
iser_conn->pages_per_mr =
iser_conn->scsi_sg_tablesize + reserved_mr_pages;
@@ -755,7 +659,7 @@ static void iser_route_handler(struct rdma_cm_id *cma_id)
struct iser_cm_hdr req_hdr;
struct iser_conn *iser_conn = (struct iser_conn *)cma_id->context;
struct ib_conn *ib_conn = &iser_conn->ib_conn;
- struct iser_device *device = ib_conn->device;
+ struct ib_device *ib_dev = ib_conn->device->ib_device;
if (iser_conn->state != ISER_CONN_PENDING)
/* bailout */
@@ -766,14 +670,14 @@ static void iser_route_handler(struct rdma_cm_id *cma_id)
goto failure;
memset(&conn_param, 0, sizeof conn_param);
- conn_param.responder_resources = device->ib_device->attrs.max_qp_rd_atom;
+ conn_param.responder_resources = ib_dev->attrs.max_qp_rd_atom;
conn_param.initiator_depth = 1;
conn_param.retry_count = 7;
conn_param.rnr_retry_count = 6;
memset(&req_hdr, 0, sizeof(req_hdr));
req_hdr.flags = ISER_ZBVA_NOT_SUP;
- if (!device->remote_inv_sup)
+ if (!iser_always_reg)
req_hdr.flags |= ISER_SEND_W_INV_NOT_SUP;
conn_param.private_data = (void *)&req_hdr;
conn_param.private_data_len = sizeof(struct iser_cm_hdr);
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH v3 02/13] RDMA/srp: Remove support for FMR memory registration
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 01/13] RDMA/iser: Remove support for FMR memory registration Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 03/13] RDMA/rds: Remove FMR support for " Jason Gunthorpe
` (11 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev
Cc: Bart Van Assche, Israel Rukshin, Max Gurtovoy, oren, shlomin, vladimirk
From: Max Gurtovoy <maxg@mellanox.com>
FMR is not supported on most recent RDMA devices (that use fast memory
registration mechanism). Also, FMR was recently removed from NFS/RDMA
ULP.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---
drivers/infiniband/ulp/srp/ib_srp.c | 222 ++--------------------------
drivers/infiniband/ulp/srp/ib_srp.h | 27 +---
2 files changed, 22 insertions(+), 227 deletions(-)
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 00b4f88b113e62..27bea483d8c6e1 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -71,7 +71,6 @@ static unsigned int srp_sg_tablesize;
static unsigned int cmd_sg_entries;
static unsigned int indirect_sg_entries;
static bool allow_ext_sg;
-static bool prefer_fr = true;
static bool register_always = true;
static bool never_register;
static int topspin_workarounds = 1;
@@ -95,10 +94,6 @@ module_param(topspin_workarounds, int, 0444);
MODULE_PARM_DESC(topspin_workarounds,
"Enable workarounds for Topspin/Cisco SRP target bugs if != 0");
-module_param(prefer_fr, bool, 0444);
-MODULE_PARM_DESC(prefer_fr,
-"Whether to use fast registration if both FMR and fast registration are supported");
-
module_param(register_always, bool, 0444);
MODULE_PARM_DESC(register_always,
"Use memory registration even for contiguous memory regions");
@@ -388,24 +383,6 @@ static int srp_new_cm_id(struct srp_rdma_ch *ch)
srp_new_ib_cm_id(ch);
}
-static struct ib_fmr_pool *srp_alloc_fmr_pool(struct srp_target_port *target)
-{
- struct srp_device *dev = target->srp_host->srp_dev;
- struct ib_fmr_pool_param fmr_param;
-
- memset(&fmr_param, 0, sizeof(fmr_param));
- fmr_param.pool_size = target->mr_pool_size;
- fmr_param.dirty_watermark = fmr_param.pool_size / 4;
- fmr_param.cache = 1;
- fmr_param.max_pages_per_fmr = dev->max_pages_per_mr;
- fmr_param.page_shift = ilog2(dev->mr_page_size);
- fmr_param.access = (IB_ACCESS_LOCAL_WRITE |
- IB_ACCESS_REMOTE_WRITE |
- IB_ACCESS_REMOTE_READ);
-
- return ib_create_fmr_pool(dev->pd, &fmr_param);
-}
-
/**
* srp_destroy_fr_pool() - free the resources owned by a pool
* @pool: Fast registration pool to be destroyed.
@@ -556,7 +533,6 @@ static int srp_create_ch_ib(struct srp_rdma_ch *ch)
struct ib_qp_init_attr *init_attr;
struct ib_cq *recv_cq, *send_cq;
struct ib_qp *qp;
- struct ib_fmr_pool *fmr_pool = NULL;
struct srp_fr_pool *fr_pool = NULL;
const int m = 1 + dev->use_fast_reg * target->mr_per_cmd * 2;
int ret;
@@ -619,14 +595,6 @@ static int srp_create_ch_ib(struct srp_rdma_ch *ch)
"FR pool allocation failed (%d)\n", ret);
goto err_qp;
}
- } else if (dev->use_fmr) {
- fmr_pool = srp_alloc_fmr_pool(target);
- if (IS_ERR(fmr_pool)) {
- ret = PTR_ERR(fmr_pool);
- shost_printk(KERN_WARNING, target->scsi_host, PFX
- "FMR pool allocation failed (%d)\n", ret);
- goto err_qp;
- }
}
if (ch->qp)
@@ -644,10 +612,6 @@ static int srp_create_ch_ib(struct srp_rdma_ch *ch)
if (ch->fr_pool)
srp_destroy_fr_pool(ch->fr_pool);
ch->fr_pool = fr_pool;
- } else if (dev->use_fmr) {
- if (ch->fmr_pool)
- ib_destroy_fmr_pool(ch->fmr_pool);
- ch->fmr_pool = fmr_pool;
}
kfree(init_attr);
@@ -702,9 +666,6 @@ static void srp_free_ch_ib(struct srp_target_port *target,
if (dev->use_fast_reg) {
if (ch->fr_pool)
srp_destroy_fr_pool(ch->fr_pool);
- } else if (dev->use_fmr) {
- if (ch->fmr_pool)
- ib_destroy_fmr_pool(ch->fmr_pool);
}
srp_destroy_qp(ch);
@@ -1017,12 +978,8 @@ static void srp_free_req_data(struct srp_target_port *target,
for (i = 0; i < target->req_ring_size; ++i) {
req = &ch->req_ring[i];
- if (dev->use_fast_reg) {
+ if (dev->use_fast_reg)
kfree(req->fr_list);
- } else {
- kfree(req->fmr_list);
- kfree(req->map_page);
- }
if (req->indirect_dma_addr) {
ib_dma_unmap_single(ibdev, req->indirect_dma_addr,
target->indirect_size,
@@ -1056,16 +1013,8 @@ static int srp_alloc_req_data(struct srp_rdma_ch *ch)
GFP_KERNEL);
if (!mr_list)
goto out;
- if (srp_dev->use_fast_reg) {
+ if (srp_dev->use_fast_reg)
req->fr_list = mr_list;
- } else {
- req->fmr_list = mr_list;
- req->map_page = kmalloc_array(srp_dev->max_pages_per_mr,
- sizeof(void *),
- GFP_KERNEL);
- if (!req->map_page)
- goto out;
- }
req->indirect_desc = kmalloc(target->indirect_size, GFP_KERNEL);
if (!req->indirect_desc)
goto out;
@@ -1272,11 +1221,6 @@ static void srp_unmap_data(struct scsi_cmnd *scmnd,
if (req->nmdesc)
srp_fr_pool_put(ch->fr_pool, req->fr_list,
req->nmdesc);
- } else if (dev->use_fmr) {
- struct ib_pool_fmr **pfmr;
-
- for (i = req->nmdesc, pfmr = req->fmr_list; i > 0; i--, pfmr++)
- ib_fmr_pool_unmap(*pfmr);
}
ib_dma_unmap_sg(ibdev, scsi_sglist(scmnd), scsi_sg_count(scmnd),
@@ -1472,50 +1416,6 @@ static void srp_map_desc(struct srp_map_state *state, dma_addr_t dma_addr,
state->ndesc++;
}
-static int srp_map_finish_fmr(struct srp_map_state *state,
- struct srp_rdma_ch *ch)
-{
- struct srp_target_port *target = ch->target;
- struct srp_device *dev = target->srp_host->srp_dev;
- struct ib_pool_fmr *fmr;
- u64 io_addr = 0;
-
- if (state->fmr.next >= state->fmr.end) {
- shost_printk(KERN_ERR, ch->target->scsi_host,
- PFX "Out of MRs (mr_per_cmd = %d)\n",
- ch->target->mr_per_cmd);
- return -ENOMEM;
- }
-
- WARN_ON_ONCE(!dev->use_fmr);
-
- if (state->npages == 0)
- return 0;
-
- if (state->npages == 1 && target->global_rkey) {
- srp_map_desc(state, state->base_dma_addr, state->dma_len,
- target->global_rkey);
- goto reset_state;
- }
-
- fmr = ib_fmr_pool_map_phys(ch->fmr_pool, state->pages,
- state->npages, io_addr);
- if (IS_ERR(fmr))
- return PTR_ERR(fmr);
-
- *state->fmr.next++ = fmr;
- state->nmdesc++;
-
- srp_map_desc(state, state->base_dma_addr & ~dev->mr_page_mask,
- state->dma_len, fmr->fmr->rkey);
-
-reset_state:
- state->npages = 0;
- state->dma_len = 0;
-
- return 0;
-}
-
static void srp_reg_mr_err_done(struct ib_cq *cq, struct ib_wc *wc)
{
srp_handle_qp_err(cq, wc, "FAST REG");
@@ -1606,74 +1506,6 @@ static int srp_map_finish_fr(struct srp_map_state *state,
return n;
}
-static int srp_map_sg_entry(struct srp_map_state *state,
- struct srp_rdma_ch *ch,
- struct scatterlist *sg)
-{
- struct srp_target_port *target = ch->target;
- struct srp_device *dev = target->srp_host->srp_dev;
- dma_addr_t dma_addr = sg_dma_address(sg);
- unsigned int dma_len = sg_dma_len(sg);
- unsigned int len = 0;
- int ret;
-
- WARN_ON_ONCE(!dma_len);
-
- while (dma_len) {
- unsigned offset = dma_addr & ~dev->mr_page_mask;
-
- if (state->npages == dev->max_pages_per_mr ||
- (state->npages > 0 && offset != 0)) {
- ret = srp_map_finish_fmr(state, ch);
- if (ret)
- return ret;
- }
-
- len = min_t(unsigned int, dma_len, dev->mr_page_size - offset);
-
- if (!state->npages)
- state->base_dma_addr = dma_addr;
- state->pages[state->npages++] = dma_addr & dev->mr_page_mask;
- state->dma_len += len;
- dma_addr += len;
- dma_len -= len;
- }
-
- /*
- * If the end of the MR is not on a page boundary then we need to
- * close it out and start a new one -- we can only merge at page
- * boundaries.
- */
- ret = 0;
- if ((dma_addr & ~dev->mr_page_mask) != 0)
- ret = srp_map_finish_fmr(state, ch);
- return ret;
-}
-
-static int srp_map_sg_fmr(struct srp_map_state *state, struct srp_rdma_ch *ch,
- struct srp_request *req, struct scatterlist *scat,
- int count)
-{
- struct scatterlist *sg;
- int i, ret;
-
- state->pages = req->map_page;
- state->fmr.next = req->fmr_list;
- state->fmr.end = req->fmr_list + ch->target->mr_per_cmd;
-
- for_each_sg(scat, sg, count, i) {
- ret = srp_map_sg_entry(state, ch, sg);
- if (ret)
- return ret;
- }
-
- ret = srp_map_finish_fmr(state, ch);
- if (ret)
- return ret;
-
- return 0;
-}
-
static int srp_map_sg_fr(struct srp_map_state *state, struct srp_rdma_ch *ch,
struct srp_request *req, struct scatterlist *scat,
int count)
@@ -1733,7 +1565,6 @@ static int srp_map_idb(struct srp_rdma_ch *ch, struct srp_request *req,
struct srp_device *dev = target->srp_host->srp_dev;
struct srp_map_state state;
struct srp_direct_buf idb_desc;
- u64 idb_pages[1];
struct scatterlist idb_sg[1];
int ret;
@@ -1756,14 +1587,6 @@ static int srp_map_idb(struct srp_rdma_ch *ch, struct srp_request *req,
if (ret < 0)
return ret;
WARN_ON_ONCE(ret < 1);
- } else if (dev->use_fmr) {
- state.pages = idb_pages;
- state.pages[0] = (req->indirect_dma_addr &
- dev->mr_page_mask);
- state.npages = 1;
- ret = srp_map_finish_fmr(&state, ch);
- if (ret < 0)
- return ret;
} else {
return -EINVAL;
}
@@ -1787,9 +1610,6 @@ static void srp_check_mapping(struct srp_map_state *state,
if (dev->use_fast_reg)
for (i = 0, pfr = req->fr_list; i < state->nmdesc; i++, pfr++)
mr_len += (*pfr)->mr->length;
- else if (dev->use_fmr)
- for (i = 0; i < state->nmdesc; i++)
- mr_len += be32_to_cpu(req->indirect_desc[i].len);
if (desc_len != scsi_bufflen(req->scmnd) ||
mr_len > scsi_bufflen(req->scmnd))
pr_err("Inconsistent: scsi len %d <> desc len %lld <> mr len %lld; ndesc %d; nmdesc = %d\n",
@@ -1904,8 +1724,6 @@ static int srp_map_data(struct scsi_cmnd *scmnd, struct srp_rdma_ch *ch,
state.desc = req->indirect_desc;
if (dev->use_fast_reg)
ret = srp_map_sg_fr(&state, ch, req, scat, count);
- else if (dev->use_fmr)
- ret = srp_map_sg_fmr(&state, ch, req, scat, count);
else
ret = srp_map_sg_dma(&state, ch, req, scat, count);
req->nmdesc = state.nmdesc;
@@ -3864,13 +3682,13 @@ static ssize_t srp_create_target(struct device *dev,
goto out;
}
- if (!srp_dev->has_fmr && !srp_dev->has_fr && !target->allow_ext_sg &&
+ if (!srp_dev->has_fr && !target->allow_ext_sg &&
target->cmd_sg_cnt < target->sg_tablesize) {
pr_warn("No MR pool and no external indirect descriptors, limiting sg_tablesize to cmd_sg_cnt\n");
target->sg_tablesize = target->cmd_sg_cnt;
}
- if (srp_dev->use_fast_reg || srp_dev->use_fmr) {
+ if (srp_dev->use_fast_reg) {
bool gaps_reg = (ibdev->attrs.device_cap_flags &
IB_DEVICE_SG_GAPS_REG);
@@ -3878,12 +3696,12 @@ static ssize_t srp_create_target(struct device *dev,
(ilog2(srp_dev->mr_page_size) - 9);
if (!gaps_reg) {
/*
- * FR and FMR can only map one HCA page per entry. If
- * the start address is not aligned on a HCA page
- * boundary two entries will be used for the head and
- * the tail although these two entries combined
- * contain at most one HCA page of data. Hence the "+
- * 1" in the calculation below.
+ * FR can only map one HCA page per entry. If the start
+ * address is not aligned on a HCA page boundary two
+ * entries will be used for the head and the tail
+ * although these two entries combined contain at most
+ * one HCA page of data. Hence the "+ 1" in the
+ * calculation below.
*
* The indirect data buffer descriptor is contiguous
* so the memory for that buffer will only be
@@ -4162,23 +3980,15 @@ static int srp_add_one(struct ib_device *device)
srp_dev->max_pages_per_mr = min_t(u64, SRP_MAX_PAGES_PER_MR,
max_pages_per_mr);
- srp_dev->has_fmr = (device->ops.alloc_fmr &&
- device->ops.dealloc_fmr &&
- device->ops.map_phys_fmr &&
- device->ops.unmap_fmr);
srp_dev->has_fr = (attr->device_cap_flags &
IB_DEVICE_MEM_MGT_EXTENSIONS);
- if (!never_register && !srp_dev->has_fmr && !srp_dev->has_fr) {
- dev_warn(&device->dev, "neither FMR nor FR is supported\n");
- } else if (!never_register &&
- attr->max_mr_size >= 2 * srp_dev->mr_page_size) {
- srp_dev->use_fast_reg = (srp_dev->has_fr &&
- (!srp_dev->has_fmr || prefer_fr));
- srp_dev->use_fmr = !srp_dev->use_fast_reg && srp_dev->has_fmr;
- }
+ if (!never_register && !srp_dev->has_fr)
+ dev_warn(&device->dev, "FR is not supported\n");
+ else if (!never_register &&
+ attr->max_mr_size >= 2 * srp_dev->mr_page_size)
+ srp_dev->use_fast_reg = srp_dev->has_fr;
- if (never_register || !register_always ||
- (!srp_dev->has_fmr && !srp_dev->has_fr))
+ if (never_register || !register_always || !srp_dev->has_fr)
flags |= IB_PD_UNSAFE_GLOBAL_RKEY;
if (srp_dev->use_fast_reg) {
diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h
index 6fabcc2faf1f08..6818cac0a3b789 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.h
+++ b/drivers/infiniband/ulp/srp/ib_srp.h
@@ -44,7 +44,6 @@
#include <rdma/ib_verbs.h>
#include <rdma/ib_sa.h>
#include <rdma/ib_cm.h>
-#include <rdma/ib_fmr_pool.h>
#include <rdma/rdma_cm.h>
enum {
@@ -95,8 +94,7 @@ enum srp_iu_type {
/*
* @mr_page_mask: HCA memory registration page mask.
* @mr_page_size: HCA memory registration page size.
- * @mr_max_size: Maximum size in bytes of a single FMR / FR registration
- * request.
+ * @mr_max_size: Maximum size in bytes of a single FR registration request.
*/
struct srp_device {
struct list_head dev_list;
@@ -107,9 +105,7 @@ struct srp_device {
int mr_page_size;
int mr_max_size;
int max_pages_per_mr;
- bool has_fmr;
bool has_fr;
- bool use_fmr;
bool use_fast_reg;
};
@@ -127,11 +123,7 @@ struct srp_host {
struct srp_request {
struct scsi_cmnd *scmnd;
struct srp_iu *cmd;
- union {
- struct ib_pool_fmr **fmr_list;
- struct srp_fr_desc **fr_list;
- };
- u64 *map_page;
+ struct srp_fr_desc **fr_list;
struct srp_direct_buf *indirect_desc;
dma_addr_t indirect_dma_addr;
short nmdesc;
@@ -155,10 +147,7 @@ struct srp_rdma_ch {
struct ib_cq *send_cq;
struct ib_cq *recv_cq;
struct ib_qp *qp;
- union {
- struct ib_fmr_pool *fmr_pool;
- struct srp_fr_pool *fr_pool;
- };
+ struct srp_fr_pool *fr_pool;
uint32_t max_it_iu_len;
uint32_t max_ti_iu_len;
u8 max_imm_sge;
@@ -319,19 +308,15 @@ struct srp_fr_pool {
* @pages: Array with DMA addresses of pages being considered for
* memory registration.
* @base_dma_addr: DMA address of the first page that has not yet been mapped.
- * @dma_len: Number of bytes that will be registered with the next
- * FMR or FR memory registration call.
+ * @dma_len: Number of bytes that will be registered with the next FR
+ * memory registration call.
* @total_len: Total number of bytes in the sg-list being mapped.
* @npages: Number of page addresses in the pages[] array.
- * @nmdesc: Number of FMR or FR memory descriptors used for mapping.
+ * @nmdesc: Number of FR memory descriptors used for mapping.
* @ndesc: Number of SRP buffer descriptors that have been filled in.
*/
struct srp_map_state {
union {
- struct {
- struct ib_pool_fmr **next;
- struct ib_pool_fmr **end;
- } fmr;
struct {
struct srp_fr_desc **next;
struct srp_fr_desc **end;
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH v3 03/13] RDMA/rds: Remove FMR support for memory registration
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 01/13] RDMA/iser: Remove support for FMR memory registration Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 02/13] RDMA/srp: " Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-28 20:21 ` santosh.shilimkar
2020-05-28 19:45 ` [PATCH v3 04/13] RDMA/core: Remove FMR pool API Jason Gunthorpe
` (10 subsequent siblings)
13 siblings, 1 reply; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev
Cc: aron.silverton, Max Gurtovoy, oren, santosh.shilimkar, shlomin,
vladimirk
From: Max Gurtovoy <maxg@mellanox.com>
Use FRWR method for memory registration by default and remove the ancient
and unsafe FMR method.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Cc: aron.silverton@oracle.com
Cc: santosh.shilimkar@oracle.com
---
net/rds/Makefile | 2 +-
net/rds/ib.c | 20 ++--
net/rds/ib.h | 2 -
net/rds/ib_cm.c | 4 +-
net/rds/ib_fmr.c | 269 ----------------------------------------------
net/rds/ib_frmr.c | 4 +-
net/rds/ib_mr.h | 14 +--
net/rds/ib_rdma.c | 28 ++---
8 files changed, 21 insertions(+), 322 deletions(-)
delete mode 100644 net/rds/ib_fmr.c
diff --git a/net/rds/Makefile b/net/rds/Makefile
index e647f9de104a67..8fdc118e292756 100644
--- a/net/rds/Makefile
+++ b/net/rds/Makefile
@@ -7,7 +7,7 @@ rds-y := af_rds.o bind.o cong.o connection.o info.o message.o \
obj-$(CONFIG_RDS_RDMA) += rds_rdma.o
rds_rdma-y := rdma_transport.o \
ib.o ib_cm.o ib_recv.o ib_ring.o ib_send.o ib_stats.o \
- ib_sysctl.o ib_rdma.o ib_fmr.o ib_frmr.o
+ ib_sysctl.o ib_rdma.o ib_frmr.o
obj-$(CONFIG_RDS_TCP) += rds_tcp.o
diff --git a/net/rds/ib.c b/net/rds/ib.c
index 90212ed3edf1c9..6c43b3e4c73618 100644
--- a/net/rds/ib.c
+++ b/net/rds/ib.c
@@ -130,13 +130,16 @@ void rds_ib_dev_put(struct rds_ib_device *rds_ibdev)
static int rds_ib_add_one(struct ib_device *device)
{
struct rds_ib_device *rds_ibdev;
- bool has_fr, has_fmr;
int ret;
/* Only handle IB (no iWARP) devices */
if (device->node_type != RDMA_NODE_IB_CA)
return -EOPNOTSUPP;
+ /* Device must support FRWR */
+ if (!(device->attrs.device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS))
+ return -EOPNOTSUPP;
+
rds_ibdev = kzalloc_node(sizeof(struct rds_ib_device), GFP_KERNEL,
ibdev_to_node(device));
if (!rds_ibdev)
@@ -152,11 +155,6 @@ static int rds_ib_add_one(struct ib_device *device)
rds_ibdev->max_wrs = device->attrs.max_qp_wr;
rds_ibdev->max_sge = min(device->attrs.max_send_sge, RDS_IB_MAX_SGE);
- has_fr = (device->attrs.device_cap_flags &
- IB_DEVICE_MEM_MGT_EXTENSIONS);
- has_fmr = (device->ops.alloc_fmr && device->ops.dealloc_fmr &&
- device->ops.map_phys_fmr && device->ops.unmap_fmr);
- rds_ibdev->use_fastreg = (has_fr && !has_fmr);
rds_ibdev->odp_capable =
!!(device->attrs.device_cap_flags &
IB_DEVICE_ON_DEMAND_PAGING) &&
@@ -165,7 +163,6 @@ static int rds_ib_add_one(struct ib_device *device)
!!(device->attrs.odp_caps.per_transport_caps.rc_odp_caps &
IB_ODP_SUPPORT_READ);
- rds_ibdev->fmr_max_remaps = device->attrs.max_map_per_fmr?: 32;
rds_ibdev->max_1m_mrs = device->attrs.max_mr ?
min_t(unsigned int, (device->attrs.max_mr / 2),
rds_ib_mr_1m_pool_size) : rds_ib_mr_1m_pool_size;
@@ -219,14 +216,11 @@ static int rds_ib_add_one(struct ib_device *device)
goto put_dev;
}
- rdsdebug("RDS/IB: max_mr = %d, max_wrs = %d, max_sge = %d, fmr_max_remaps = %d, max_1m_mrs = %d, max_8k_mrs = %d\n",
+ rdsdebug("RDS/IB: max_mr = %d, max_wrs = %d, max_sge = %d, max_1m_mrs = %d, max_8k_mrs = %d\n",
device->attrs.max_fmr, rds_ibdev->max_wrs, rds_ibdev->max_sge,
- rds_ibdev->fmr_max_remaps, rds_ibdev->max_1m_mrs,
- rds_ibdev->max_8k_mrs);
+ rds_ibdev->max_1m_mrs, rds_ibdev->max_8k_mrs);
- pr_info("RDS/IB: %s: %s supported and preferred\n",
- device->name,
- rds_ibdev->use_fastreg ? "FRMR" : "FMR");
+ pr_info("RDS/IB: %s: added\n", device->name);
down_write(&rds_ib_devices_lock);
list_add_tail_rcu(&rds_ibdev->list, &rds_ib_devices);
diff --git a/net/rds/ib.h b/net/rds/ib.h
index 0296f1f7acda34..5ae069d39eab74 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -247,13 +247,11 @@ struct rds_ib_device {
struct ib_device *dev;
struct ib_pd *pd;
struct dma_pool *rid_hdrs_pool; /* RDS headers DMA pool */
- u8 use_fastreg:1;
u8 odp_capable:1;
unsigned int max_mrs;
struct rds_ib_mr_pool *mr_1m_pool;
struct rds_ib_mr_pool *mr_8k_pool;
- unsigned int fmr_max_remaps;
unsigned int max_8k_mrs;
unsigned int max_1m_mrs;
int max_sge;
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index 0fec4171564e25..c3319ff3ee11cd 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -527,10 +527,10 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
return -EOPNOTSUPP;
/* The fr_queue_space is currently set to 512, to add extra space on
- * completion queue and send queue. This extra space is used for FRMR
+ * completion queue and send queue. This extra space is used for FRWR
* registration and invalidation work requests
*/
- fr_queue_space = (rds_ibdev->use_fastreg ? RDS_IB_DEFAULT_FR_WR : 0);
+ fr_queue_space = RDS_IB_DEFAULT_FR_WR;
/* add the conn now so that connection establishment has the dev */
rds_ib_add_conn(rds_ibdev, conn);
diff --git a/net/rds/ib_fmr.c b/net/rds/ib_fmr.c
deleted file mode 100644
index 93c0437e6a5fd2..00000000000000
--- a/net/rds/ib_fmr.c
+++ /dev/null
@@ -1,269 +0,0 @@
-/*
- * Copyright (c) 2016 Oracle. All rights reserved.
- *
- * This software is available to you under a choice of one of two
- * licenses. You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * COPYING in the main directory of this source tree, or the
- * OpenIB.org BSD license below:
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the following
- * disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include "ib_mr.h"
-
-struct rds_ib_mr *rds_ib_alloc_fmr(struct rds_ib_device *rds_ibdev, int npages)
-{
- struct rds_ib_mr_pool *pool;
- struct rds_ib_mr *ibmr = NULL;
- struct rds_ib_fmr *fmr;
- int err = 0;
-
- if (npages <= RDS_MR_8K_MSG_SIZE)
- pool = rds_ibdev->mr_8k_pool;
- else
- pool = rds_ibdev->mr_1m_pool;
-
- if (atomic_read(&pool->dirty_count) >= pool->max_items / 10)
- queue_delayed_work(rds_ib_mr_wq, &pool->flush_worker, 10);
-
- /* Switch pools if one of the pool is reaching upper limit */
- if (atomic_read(&pool->dirty_count) >= pool->max_items * 9 / 10) {
- if (pool->pool_type == RDS_IB_MR_8K_POOL)
- pool = rds_ibdev->mr_1m_pool;
- else
- pool = rds_ibdev->mr_8k_pool;
- }
-
- ibmr = rds_ib_try_reuse_ibmr(pool);
- if (ibmr)
- return ibmr;
-
- ibmr = kzalloc_node(sizeof(*ibmr), GFP_KERNEL,
- rdsibdev_to_node(rds_ibdev));
- if (!ibmr) {
- err = -ENOMEM;
- goto out_no_cigar;
- }
-
- fmr = &ibmr->u.fmr;
- fmr->fmr = ib_alloc_fmr(rds_ibdev->pd,
- (IB_ACCESS_LOCAL_WRITE |
- IB_ACCESS_REMOTE_READ |
- IB_ACCESS_REMOTE_WRITE |
- IB_ACCESS_REMOTE_ATOMIC),
- &pool->fmr_attr);
- if (IS_ERR(fmr->fmr)) {
- err = PTR_ERR(fmr->fmr);
- fmr->fmr = NULL;
- pr_warn("RDS/IB: %s failed (err=%d)\n", __func__, err);
- goto out_no_cigar;
- }
-
- ibmr->pool = pool;
- if (pool->pool_type == RDS_IB_MR_8K_POOL)
- rds_ib_stats_inc(s_ib_rdma_mr_8k_alloc);
- else
- rds_ib_stats_inc(s_ib_rdma_mr_1m_alloc);
-
- return ibmr;
-
-out_no_cigar:
- kfree(ibmr);
- atomic_dec(&pool->item_count);
-
- return ERR_PTR(err);
-}
-
-static int rds_ib_map_fmr(struct rds_ib_device *rds_ibdev,
- struct rds_ib_mr *ibmr, struct scatterlist *sg,
- unsigned int nents)
-{
- struct ib_device *dev = rds_ibdev->dev;
- struct rds_ib_fmr *fmr = &ibmr->u.fmr;
- struct scatterlist *scat = sg;
- u64 io_addr = 0;
- u64 *dma_pages;
- u32 len;
- int page_cnt, sg_dma_len;
- int i, j;
- int ret;
-
- sg_dma_len = ib_dma_map_sg(dev, sg, nents, DMA_BIDIRECTIONAL);
- if (unlikely(!sg_dma_len)) {
- pr_warn("RDS/IB: %s failed!\n", __func__);
- return -EBUSY;
- }
-
- len = 0;
- page_cnt = 0;
-
- for (i = 0; i < sg_dma_len; ++i) {
- unsigned int dma_len = sg_dma_len(&scat[i]);
- u64 dma_addr = sg_dma_address(&scat[i]);
-
- if (dma_addr & ~PAGE_MASK) {
- if (i > 0) {
- ib_dma_unmap_sg(dev, sg, nents,
- DMA_BIDIRECTIONAL);
- return -EINVAL;
- } else {
- ++page_cnt;
- }
- }
- if ((dma_addr + dma_len) & ~PAGE_MASK) {
- if (i < sg_dma_len - 1) {
- ib_dma_unmap_sg(dev, sg, nents,
- DMA_BIDIRECTIONAL);
- return -EINVAL;
- } else {
- ++page_cnt;
- }
- }
-
- len += dma_len;
- }
-
- page_cnt += len >> PAGE_SHIFT;
- if (page_cnt > ibmr->pool->fmr_attr.max_pages) {
- ib_dma_unmap_sg(dev, sg, nents, DMA_BIDIRECTIONAL);
- return -EINVAL;
- }
-
- dma_pages = kmalloc_array_node(sizeof(u64), page_cnt, GFP_ATOMIC,
- rdsibdev_to_node(rds_ibdev));
- if (!dma_pages) {
- ib_dma_unmap_sg(dev, sg, nents, DMA_BIDIRECTIONAL);
- return -ENOMEM;
- }
-
- page_cnt = 0;
- for (i = 0; i < sg_dma_len; ++i) {
- unsigned int dma_len = sg_dma_len(&scat[i]);
- u64 dma_addr = sg_dma_address(&scat[i]);
-
- for (j = 0; j < dma_len; j += PAGE_SIZE)
- dma_pages[page_cnt++] =
- (dma_addr & PAGE_MASK) + j;
- }
-
- ret = ib_map_phys_fmr(fmr->fmr, dma_pages, page_cnt, io_addr);
- if (ret) {
- ib_dma_unmap_sg(dev, sg, nents, DMA_BIDIRECTIONAL);
- goto out;
- }
-
- /* Success - we successfully remapped the MR, so we can
- * safely tear down the old mapping.
- */
- rds_ib_teardown_mr(ibmr);
-
- ibmr->sg = scat;
- ibmr->sg_len = nents;
- ibmr->sg_dma_len = sg_dma_len;
- ibmr->remap_count++;
-
- if (ibmr->pool->pool_type == RDS_IB_MR_8K_POOL)
- rds_ib_stats_inc(s_ib_rdma_mr_8k_used);
- else
- rds_ib_stats_inc(s_ib_rdma_mr_1m_used);
- ret = 0;
-
-out:
- kfree(dma_pages);
-
- return ret;
-}
-
-struct rds_ib_mr *rds_ib_reg_fmr(struct rds_ib_device *rds_ibdev,
- struct scatterlist *sg,
- unsigned long nents,
- u32 *key)
-{
- struct rds_ib_mr *ibmr = NULL;
- struct rds_ib_fmr *fmr;
- int ret;
-
- ibmr = rds_ib_alloc_fmr(rds_ibdev, nents);
- if (IS_ERR(ibmr))
- return ibmr;
-
- ibmr->device = rds_ibdev;
- fmr = &ibmr->u.fmr;
- ret = rds_ib_map_fmr(rds_ibdev, ibmr, sg, nents);
- if (ret == 0)
- *key = fmr->fmr->rkey;
- else
- rds_ib_free_mr(ibmr, 0);
-
- return ibmr;
-}
-
-void rds_ib_unreg_fmr(struct list_head *list, unsigned int *nfreed,
- unsigned long *unpinned, unsigned int goal)
-{
- struct rds_ib_mr *ibmr, *next;
- struct rds_ib_fmr *fmr;
- LIST_HEAD(fmr_list);
- int ret = 0;
- unsigned int freed = *nfreed;
-
- /* String all ib_mr's onto one list and hand them to ib_unmap_fmr */
- list_for_each_entry(ibmr, list, unmap_list) {
- fmr = &ibmr->u.fmr;
- list_add(&fmr->fmr->list, &fmr_list);
- }
-
- ret = ib_unmap_fmr(&fmr_list);
- if (ret)
- pr_warn("RDS/IB: FMR invalidation failed (err=%d)\n", ret);
-
- /* Now we can destroy the DMA mapping and unpin any pages */
- list_for_each_entry_safe(ibmr, next, list, unmap_list) {
- fmr = &ibmr->u.fmr;
- *unpinned += ibmr->sg_len;
- __rds_ib_teardown_mr(ibmr);
- if (freed < goal ||
- ibmr->remap_count >= ibmr->pool->fmr_attr.max_maps) {
- if (ibmr->pool->pool_type == RDS_IB_MR_8K_POOL)
- rds_ib_stats_inc(s_ib_rdma_mr_8k_free);
- else
- rds_ib_stats_inc(s_ib_rdma_mr_1m_free);
- list_del(&ibmr->unmap_list);
- ib_dealloc_fmr(fmr->fmr);
- kfree(ibmr);
- freed++;
- }
- }
- *nfreed = freed;
-}
-
-void rds_ib_free_fmr_list(struct rds_ib_mr *ibmr)
-{
- struct rds_ib_mr_pool *pool = ibmr->pool;
-
- if (ibmr->remap_count >= pool->fmr_attr.max_maps)
- llist_add(&ibmr->llnode, &pool->drop_list);
- else
- llist_add(&ibmr->llnode, &pool->free_list);
-}
diff --git a/net/rds/ib_frmr.c b/net/rds/ib_frmr.c
index 06ecf9d2d4bf1b..9b6ffff72f2d11 100644
--- a/net/rds/ib_frmr.c
+++ b/net/rds/ib_frmr.c
@@ -76,7 +76,7 @@ static struct rds_ib_mr *rds_ib_alloc_frmr(struct rds_ib_device *rds_ibdev,
frmr = &ibmr->u.frmr;
frmr->mr = ib_alloc_mr(rds_ibdev->pd, IB_MR_TYPE_MEM_REG,
- pool->fmr_attr.max_pages);
+ pool->max_pages);
if (IS_ERR(frmr->mr)) {
pr_warn("RDS/IB: %s failed to allocate MR", __func__);
err = PTR_ERR(frmr->mr);
@@ -240,7 +240,7 @@ static int rds_ib_map_frmr(struct rds_ib_device *rds_ibdev,
}
frmr->dma_npages += len >> PAGE_SHIFT;
- if (frmr->dma_npages > ibmr->pool->fmr_attr.max_pages) {
+ if (frmr->dma_npages > ibmr->pool->max_pages) {
ret = -EMSGSIZE;
goto out_unmap;
}
diff --git a/net/rds/ib_mr.h b/net/rds/ib_mr.h
index 0c8252d7fe2b76..ea5e9aee4959e2 100644
--- a/net/rds/ib_mr.h
+++ b/net/rds/ib_mr.h
@@ -43,10 +43,6 @@
#define RDS_MR_8K_SCALE (256 / (RDS_MR_8K_MSG_SIZE + 1))
#define RDS_MR_8K_POOL_SIZE (RDS_MR_8K_SCALE * (8192 / 2))
-struct rds_ib_fmr {
- struct ib_fmr *fmr;
-};
-
enum rds_ib_fr_state {
FRMR_IS_FREE, /* mr invalidated & ready for use */
FRMR_IS_INUSE, /* mr is in use or used & can be invalidated */
@@ -84,7 +80,6 @@ struct rds_ib_mr {
u8 odp:1;
union {
- struct rds_ib_fmr fmr;
struct rds_ib_frmr frmr;
struct ib_mr *mr;
} u;
@@ -109,8 +104,7 @@ struct rds_ib_mr_pool {
unsigned long max_items;
unsigned long max_items_soft;
unsigned long max_free_pinned;
- struct ib_fmr_attr fmr_attr;
- bool use_fastreg;
+ unsigned int max_pages;
};
extern struct workqueue_struct *rds_ib_mr_wq;
@@ -136,15 +130,9 @@ u32 rds_ib_get_lkey(void *trans_private);
void __rds_ib_teardown_mr(struct rds_ib_mr *);
void rds_ib_teardown_mr(struct rds_ib_mr *);
-struct rds_ib_mr *rds_ib_alloc_fmr(struct rds_ib_device *, int);
struct rds_ib_mr *rds_ib_reuse_mr(struct rds_ib_mr_pool *);
int rds_ib_flush_mr_pool(struct rds_ib_mr_pool *, int, struct rds_ib_mr **);
-struct rds_ib_mr *rds_ib_reg_fmr(struct rds_ib_device *, struct scatterlist *,
- unsigned long, u32 *);
struct rds_ib_mr *rds_ib_try_reuse_ibmr(struct rds_ib_mr_pool *);
-void rds_ib_unreg_fmr(struct list_head *, unsigned int *,
- unsigned long *, unsigned int);
-void rds_ib_free_fmr_list(struct rds_ib_mr *);
struct rds_ib_mr *rds_ib_reg_frmr(struct rds_ib_device *rds_ibdev,
struct rds_ib_connection *ic,
struct scatterlist *sg,
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index b34b24e237f81b..8f070ee7e74268 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -181,7 +181,7 @@ void rds_ib_get_mr_info(struct rds_ib_device *rds_ibdev, struct rds_info_rdma_co
struct rds_ib_mr_pool *pool_1m = rds_ibdev->mr_1m_pool;
iinfo->rdma_mr_max = pool_1m->max_items;
- iinfo->rdma_mr_size = pool_1m->fmr_attr.max_pages;
+ iinfo->rdma_mr_size = pool_1m->max_pages;
}
#if IS_ENABLED(CONFIG_IPV6)
@@ -191,7 +191,7 @@ void rds6_ib_get_mr_info(struct rds_ib_device *rds_ibdev,
struct rds_ib_mr_pool *pool_1m = rds_ibdev->mr_1m_pool;
iinfo6->rdma_mr_max = pool_1m->max_items;
- iinfo6->rdma_mr_size = pool_1m->fmr_attr.max_pages;
+ iinfo6->rdma_mr_size = pool_1m->max_pages;
}
#endif
@@ -406,10 +406,7 @@ int rds_ib_flush_mr_pool(struct rds_ib_mr_pool *pool,
if (list_empty(&unmap_list))
goto out;
- if (pool->use_fastreg)
- rds_ib_unreg_frmr(&unmap_list, &nfreed, &unpinned, free_goal);
- else
- rds_ib_unreg_fmr(&unmap_list, &nfreed, &unpinned, free_goal);
+ rds_ib_unreg_frmr(&unmap_list, &nfreed, &unpinned, free_goal);
if (!list_empty(&unmap_list)) {
unsigned long flags;
@@ -503,10 +500,7 @@ void rds_ib_free_mr(void *trans_private, int invalidate)
}
/* Return it to the pool's free list */
- if (rds_ibdev->use_fastreg)
- rds_ib_free_frmr_list(ibmr);
- else
- rds_ib_free_fmr_list(ibmr);
+ rds_ib_free_frmr_list(ibmr);
atomic_add(ibmr->sg_len, &pool->free_pinned);
atomic_inc(&pool->dirty_count);
@@ -622,10 +616,7 @@ void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents,
goto out;
}
- if (rds_ibdev->use_fastreg)
- ibmr = rds_ib_reg_frmr(rds_ibdev, ic, sg, nents, key_ret);
- else
- ibmr = rds_ib_reg_fmr(rds_ibdev, sg, nents, key_ret);
+ ibmr = rds_ib_reg_frmr(rds_ibdev, ic, sg, nents, key_ret);
if (IS_ERR(ibmr)) {
ret = PTR_ERR(ibmr);
pr_warn("RDS/IB: rds_ib_get_mr failed (errno=%d)\n", ret);
@@ -669,19 +660,16 @@ struct rds_ib_mr_pool *rds_ib_create_mr_pool(struct rds_ib_device *rds_ibdev,
if (pool_type == RDS_IB_MR_1M_POOL) {
/* +1 allows for unaligned MRs */
- pool->fmr_attr.max_pages = RDS_MR_1M_MSG_SIZE + 1;
+ pool->max_pages = RDS_MR_1M_MSG_SIZE + 1;
pool->max_items = rds_ibdev->max_1m_mrs;
} else {
/* pool_type == RDS_IB_MR_8K_POOL */
- pool->fmr_attr.max_pages = RDS_MR_8K_MSG_SIZE + 1;
+ pool->max_pages = RDS_MR_8K_MSG_SIZE + 1;
pool->max_items = rds_ibdev->max_8k_mrs;
}
- pool->max_free_pinned = pool->max_items * pool->fmr_attr.max_pages / 4;
- pool->fmr_attr.max_maps = rds_ibdev->fmr_max_remaps;
- pool->fmr_attr.page_shift = PAGE_SHIFT;
+ pool->max_free_pinned = pool->max_items * pool->max_pages / 4;
pool->max_items_soft = rds_ibdev->max_mrs * 3 / 4;
- pool->use_fastreg = rds_ibdev->use_fastreg;
return pool;
}
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* Re: [PATCH v3 03/13] RDMA/rds: Remove FMR support for memory registration
2020-05-28 19:45 ` [PATCH v3 03/13] RDMA/rds: Remove FMR support for " Jason Gunthorpe
@ 2020-05-28 20:21 ` santosh.shilimkar
2020-05-29 19:12 ` Jason Gunthorpe
0 siblings, 1 reply; 20+ messages in thread
From: santosh.shilimkar @ 2020-05-28 20:21 UTC (permalink / raw)
To: Jason Gunthorpe, linux-rdma, netdev
Cc: aron.silverton, Max Gurtovoy, oren, shlomin, vladimirk
On 5/28/20 12:45 PM, Jason Gunthorpe wrote:
> From: Max Gurtovoy <maxg@mellanox.com>
>
> Use FRWR method for memory registration by default and remove the ancient
> and unsafe FMR method.
>
> Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
> ---
> net/rds/Makefile | 2 +-
> net/rds/ib.c | 20 ++--
> net/rds/ib.h | 2 -
> net/rds/ib_cm.c | 4 +-
> net/rds/ib_fmr.c | 269 ----------------------------------------------
> net/rds/ib_frmr.c | 4 +-
> net/rds/ib_mr.h | 14 +--
> net/rds/ib_rdma.c | 28 ++---
> 8 files changed, 21 insertions(+), 322 deletions(-)
> delete mode 100644 net/rds/ib_fmr.c
>
Patch looks accurate to me Jason/Max. I wanted to get few regression
tests run with it before providing the ack. Will send a note once
its tested ok.
Regards,
Santosh
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v3 03/13] RDMA/rds: Remove FMR support for memory registration
2020-05-28 20:21 ` santosh.shilimkar
@ 2020-05-29 19:12 ` Jason Gunthorpe
2020-06-16 2:33 ` santosh.shilimkar
0 siblings, 1 reply; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-29 19:12 UTC (permalink / raw)
To: santosh.shilimkar
Cc: linux-rdma, netdev, aron.silverton, Max Gurtovoy, oren, shlomin,
vladimirk
On Thu, May 28, 2020 at 01:21:33PM -0700, santosh.shilimkar@oracle.com wrote:
> On 5/28/20 12:45 PM, Jason Gunthorpe wrote:
> > From: Max Gurtovoy <maxg@mellanox.com>
> >
> > Use FRWR method for memory registration by default and remove the ancient
> > and unsafe FMR method.
> >
> > Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
> > Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
>
> > net/rds/Makefile | 2 +-
> > net/rds/ib.c | 20 ++--
> > net/rds/ib.h | 2 -
> > net/rds/ib_cm.c | 4 +-
> > net/rds/ib_fmr.c | 269 ----------------------------------------------
> > net/rds/ib_frmr.c | 4 +-
> > net/rds/ib_mr.h | 14 +--
> > net/rds/ib_rdma.c | 28 ++---
> > 8 files changed, 21 insertions(+), 322 deletions(-)
> > delete mode 100644 net/rds/ib_fmr.c
> >
> Patch looks accurate to me Jason/Max. I wanted to get few regression
> tests run with it before providing the ack. Will send a note once
> its tested ok.
Okay, since we are at the merge window I'm going to put it in
linux-next to look for build regressions with the idea to send it on
Thursday
Thanks,
Jason
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH v3 03/13] RDMA/rds: Remove FMR support for memory registration
2020-05-29 19:12 ` Jason Gunthorpe
@ 2020-06-16 2:33 ` santosh.shilimkar
0 siblings, 0 replies; 20+ messages in thread
From: santosh.shilimkar @ 2020-06-16 2:33 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: linux-rdma, netdev, aron.silverton, Max Gurtovoy, oren, shlomin,
vladimirk
On 5/29/20 12:12 PM, Jason Gunthorpe wrote:
> On Thu, May 28, 2020 at 01:21:33PM -0700, santosh.shilimkar@oracle.com wrote:
>> On 5/28/20 12:45 PM, Jason Gunthorpe wrote:
>>> From: Max Gurtovoy <maxg@mellanox.com>
>>>
>>> Use FRWR method for memory registration by default and remove the ancient
>>> and unsafe FMR method.
>>>
>>> Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
>>> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
>>
>>> net/rds/Makefile | 2 +-
>>> net/rds/ib.c | 20 ++--
>>> net/rds/ib.h | 2 -
>>> net/rds/ib_cm.c | 4 +-
>>> net/rds/ib_fmr.c | 269 ----------------------------------------------
>>> net/rds/ib_frmr.c | 4 +-
>>> net/rds/ib_mr.h | 14 +--
>>> net/rds/ib_rdma.c | 28 ++---
>>> 8 files changed, 21 insertions(+), 322 deletions(-)
>>> delete mode 100644 net/rds/ib_fmr.c
>>>
>> Patch looks accurate to me Jason/Max. I wanted to get few regression
>> tests run with it before providing the ack. Will send a note once
>> its tested ok.
>
> Okay, since we are at the merge window I'm going to put it in
> linux-next to look for build regressions with the idea to send it on
> Thursday
>
I know you sent this to net-next already but just to close the loop,
regression testing went ok.
Regards,
Santosh
^ permalink raw reply [flat|nested] 20+ messages in thread
* [PATCH v3 04/13] RDMA/core: Remove FMR pool API
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
` (2 preceding siblings ...)
2020-05-28 19:45 ` [PATCH v3 03/13] RDMA/rds: Remove FMR support for " Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 05/13] RDMA/mlx5: Remove FMR leftovers Jason Gunthorpe
` (9 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev; +Cc: Max Gurtovoy, oren, shlomin, vladimirk
From: Max Gurtovoy <maxg@mellanox.com>
This ancient and unsafe method for memory registration is no longer used
by any RDMA based ULP. Remove the FMR pool API from the core driver.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---
Documentation/driver-api/infiniband.rst | 3 -
drivers/infiniband/core/Makefile | 2 +-
drivers/infiniband/core/fmr_pool.c | 494 ------------------------
include/rdma/ib_fmr_pool.h | 93 -----
4 files changed, 1 insertion(+), 591 deletions(-)
delete mode 100644 drivers/infiniband/core/fmr_pool.c
delete mode 100644 include/rdma/ib_fmr_pool.h
diff --git a/Documentation/driver-api/infiniband.rst b/Documentation/driver-api/infiniband.rst
index 1a3116f32ff0e3..30e142ccbee911 100644
--- a/Documentation/driver-api/infiniband.rst
+++ b/Documentation/driver-api/infiniband.rst
@@ -37,9 +37,6 @@ InfiniBand core interfaces
.. kernel-doc:: drivers/infiniband/core/ud_header.c
:export:
-.. kernel-doc:: drivers/infiniband/core/fmr_pool.c
- :export:
-
.. kernel-doc:: drivers/infiniband/core/umem.c
:export:
diff --git a/drivers/infiniband/core/Makefile b/drivers/infiniband/core/Makefile
index 63c1591223acf7..24cb71a16a2848 100644
--- a/drivers/infiniband/core/Makefile
+++ b/drivers/infiniband/core/Makefile
@@ -8,7 +8,7 @@ obj-$(CONFIG_INFINIBAND_USER_MAD) += ib_umad.o
obj-$(CONFIG_INFINIBAND_USER_ACCESS) += ib_uverbs.o $(user_access-y)
ib_core-y := packer.o ud_header.o verbs.o cq.o rw.o sysfs.o \
- device.o fmr_pool.o cache.o netlink.o \
+ device.o cache.o netlink.o \
roce_gid_mgmt.o mr_pool.o addr.o sa_query.o \
multicast.o mad.o smi.o agent.o mad_rmpp.o \
nldev.o restrack.o counters.o ib_core_uverbs.o \
diff --git a/drivers/infiniband/core/fmr_pool.c b/drivers/infiniband/core/fmr_pool.c
deleted file mode 100644
index e08aec42702729..00000000000000
--- a/drivers/infiniband/core/fmr_pool.c
+++ /dev/null
@@ -1,494 +0,0 @@
-/*
- * Copyright (c) 2004 Topspin Communications. All rights reserved.
- * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
- *
- * This software is available to you under a choice of one of two
- * licenses. You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * COPYING in the main directory of this source tree, or the
- * OpenIB.org BSD license below:
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the following
- * disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include <linux/errno.h>
-#include <linux/spinlock.h>
-#include <linux/export.h>
-#include <linux/slab.h>
-#include <linux/jhash.h>
-#include <linux/kthread.h>
-
-#include <rdma/ib_fmr_pool.h>
-
-#include "core_priv.h"
-
-#define PFX "fmr_pool: "
-
-enum {
- IB_FMR_MAX_REMAPS = 32,
-
- IB_FMR_HASH_BITS = 8,
- IB_FMR_HASH_SIZE = 1 << IB_FMR_HASH_BITS,
- IB_FMR_HASH_MASK = IB_FMR_HASH_SIZE - 1
-};
-
-/*
- * If an FMR is not in use, then the list member will point to either
- * its pool's free_list (if the FMR can be mapped again; that is,
- * remap_count < pool->max_remaps) or its pool's dirty_list (if the
- * FMR needs to be unmapped before being remapped). In either of
- * these cases it is a bug if the ref_count is not 0. In other words,
- * if ref_count is > 0, then the list member must not be linked into
- * either free_list or dirty_list.
- *
- * The cache_node member is used to link the FMR into a cache bucket
- * (if caching is enabled). This is independent of the reference
- * count of the FMR. When a valid FMR is released, its ref_count is
- * decremented, and if ref_count reaches 0, the FMR is placed in
- * either free_list or dirty_list as appropriate. However, it is not
- * removed from the cache and may be "revived" if a call to
- * ib_fmr_register_physical() occurs before the FMR is remapped. In
- * this case we just increment the ref_count and remove the FMR from
- * free_list/dirty_list.
- *
- * Before we remap an FMR from free_list, we remove it from the cache
- * (to prevent another user from obtaining a stale FMR). When an FMR
- * is released, we add it to the tail of the free list, so that our
- * cache eviction policy is "least recently used."
- *
- * All manipulation of ref_count, list and cache_node is protected by
- * pool_lock to maintain consistency.
- */
-
-struct ib_fmr_pool {
- spinlock_t pool_lock;
-
- int pool_size;
- int max_pages;
- int max_remaps;
- int dirty_watermark;
- int dirty_len;
- struct list_head free_list;
- struct list_head dirty_list;
- struct hlist_head *cache_bucket;
-
- void (*flush_function)(struct ib_fmr_pool *pool,
- void * arg);
- void *flush_arg;
-
- struct kthread_worker *worker;
- struct kthread_work work;
-
- atomic_t req_ser;
- atomic_t flush_ser;
-
- wait_queue_head_t force_wait;
-};
-
-static inline u32 ib_fmr_hash(u64 first_page)
-{
- return jhash_2words((u32) first_page, (u32) (first_page >> 32), 0) &
- (IB_FMR_HASH_SIZE - 1);
-}
-
-/* Caller must hold pool_lock */
-static inline struct ib_pool_fmr *ib_fmr_cache_lookup(struct ib_fmr_pool *pool,
- u64 *page_list,
- int page_list_len,
- u64 io_virtual_address)
-{
- struct hlist_head *bucket;
- struct ib_pool_fmr *fmr;
-
- if (!pool->cache_bucket)
- return NULL;
-
- bucket = pool->cache_bucket + ib_fmr_hash(*page_list);
-
- hlist_for_each_entry(fmr, bucket, cache_node)
- if (io_virtual_address == fmr->io_virtual_address &&
- page_list_len == fmr->page_list_len &&
- !memcmp(page_list, fmr->page_list,
- page_list_len * sizeof *page_list))
- return fmr;
-
- return NULL;
-}
-
-static void ib_fmr_batch_release(struct ib_fmr_pool *pool)
-{
- int ret;
- struct ib_pool_fmr *fmr;
- LIST_HEAD(unmap_list);
- LIST_HEAD(fmr_list);
-
- spin_lock_irq(&pool->pool_lock);
-
- list_for_each_entry(fmr, &pool->dirty_list, list) {
- hlist_del_init(&fmr->cache_node);
- fmr->remap_count = 0;
- list_add_tail(&fmr->fmr->list, &fmr_list);
- }
-
- list_splice_init(&pool->dirty_list, &unmap_list);
- pool->dirty_len = 0;
-
- spin_unlock_irq(&pool->pool_lock);
-
- if (list_empty(&unmap_list)) {
- return;
- }
-
- ret = ib_unmap_fmr(&fmr_list);
- if (ret)
- pr_warn(PFX "ib_unmap_fmr returned %d\n", ret);
-
- spin_lock_irq(&pool->pool_lock);
- list_splice(&unmap_list, &pool->free_list);
- spin_unlock_irq(&pool->pool_lock);
-}
-
-static void ib_fmr_cleanup_func(struct kthread_work *work)
-{
- struct ib_fmr_pool *pool = container_of(work, struct ib_fmr_pool, work);
-
- ib_fmr_batch_release(pool);
- atomic_inc(&pool->flush_ser);
- wake_up_interruptible(&pool->force_wait);
-
- if (pool->flush_function)
- pool->flush_function(pool, pool->flush_arg);
-
- if (atomic_read(&pool->flush_ser) - atomic_read(&pool->req_ser) < 0)
- kthread_queue_work(pool->worker, &pool->work);
-}
-
-/**
- * ib_create_fmr_pool - Create an FMR pool
- * @pd:Protection domain for FMRs
- * @params:FMR pool parameters
- *
- * Create a pool of FMRs. Return value is pointer to new pool or
- * error code if creation failed.
- */
-struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd,
- struct ib_fmr_pool_param *params)
-{
- struct ib_device *device;
- struct ib_fmr_pool *pool;
- int i;
- int ret;
- int max_remaps;
-
- if (!params)
- return ERR_PTR(-EINVAL);
-
- device = pd->device;
- if (!device->ops.alloc_fmr || !device->ops.dealloc_fmr ||
- !device->ops.map_phys_fmr || !device->ops.unmap_fmr) {
- dev_info(&device->dev, "Device does not support FMRs\n");
- return ERR_PTR(-ENOSYS);
- }
-
- if (!device->attrs.max_map_per_fmr)
- max_remaps = IB_FMR_MAX_REMAPS;
- else
- max_remaps = device->attrs.max_map_per_fmr;
-
- pool = kmalloc(sizeof *pool, GFP_KERNEL);
- if (!pool)
- return ERR_PTR(-ENOMEM);
-
- pool->cache_bucket = NULL;
- pool->flush_function = params->flush_function;
- pool->flush_arg = params->flush_arg;
-
- INIT_LIST_HEAD(&pool->free_list);
- INIT_LIST_HEAD(&pool->dirty_list);
-
- if (params->cache) {
- pool->cache_bucket =
- kmalloc_array(IB_FMR_HASH_SIZE,
- sizeof(*pool->cache_bucket),
- GFP_KERNEL);
- if (!pool->cache_bucket) {
- ret = -ENOMEM;
- goto out_free_pool;
- }
-
- for (i = 0; i < IB_FMR_HASH_SIZE; ++i)
- INIT_HLIST_HEAD(pool->cache_bucket + i);
- }
-
- pool->pool_size = 0;
- pool->max_pages = params->max_pages_per_fmr;
- pool->max_remaps = max_remaps;
- pool->dirty_watermark = params->dirty_watermark;
- pool->dirty_len = 0;
- spin_lock_init(&pool->pool_lock);
- atomic_set(&pool->req_ser, 0);
- atomic_set(&pool->flush_ser, 0);
- init_waitqueue_head(&pool->force_wait);
-
- pool->worker =
- kthread_create_worker(0, "ib_fmr(%s)", dev_name(&device->dev));
- if (IS_ERR(pool->worker)) {
- pr_warn(PFX "couldn't start cleanup kthread worker\n");
- ret = PTR_ERR(pool->worker);
- goto out_free_pool;
- }
- kthread_init_work(&pool->work, ib_fmr_cleanup_func);
-
- {
- struct ib_pool_fmr *fmr;
- struct ib_fmr_attr fmr_attr = {
- .max_pages = params->max_pages_per_fmr,
- .max_maps = pool->max_remaps,
- .page_shift = params->page_shift
- };
- int bytes_per_fmr = sizeof *fmr;
-
- if (pool->cache_bucket)
- bytes_per_fmr += params->max_pages_per_fmr * sizeof (u64);
-
- for (i = 0; i < params->pool_size; ++i) {
- fmr = kmalloc(bytes_per_fmr, GFP_KERNEL);
- if (!fmr)
- goto out_fail;
-
- fmr->pool = pool;
- fmr->remap_count = 0;
- fmr->ref_count = 0;
- INIT_HLIST_NODE(&fmr->cache_node);
-
- fmr->fmr = ib_alloc_fmr(pd, params->access, &fmr_attr);
- if (IS_ERR(fmr->fmr)) {
- pr_warn(PFX "fmr_create failed for FMR %d\n",
- i);
- kfree(fmr);
- goto out_fail;
- }
-
- list_add_tail(&fmr->list, &pool->free_list);
- ++pool->pool_size;
- }
- }
-
- return pool;
-
- out_free_pool:
- kfree(pool->cache_bucket);
- kfree(pool);
-
- return ERR_PTR(ret);
-
- out_fail:
- ib_destroy_fmr_pool(pool);
-
- return ERR_PTR(-ENOMEM);
-}
-EXPORT_SYMBOL(ib_create_fmr_pool);
-
-/**
- * ib_destroy_fmr_pool - Free FMR pool
- * @pool:FMR pool to free
- *
- * Destroy an FMR pool and free all associated resources.
- */
-void ib_destroy_fmr_pool(struct ib_fmr_pool *pool)
-{
- struct ib_pool_fmr *fmr;
- struct ib_pool_fmr *tmp;
- LIST_HEAD(fmr_list);
- int i;
-
- kthread_destroy_worker(pool->worker);
- ib_fmr_batch_release(pool);
-
- i = 0;
- list_for_each_entry_safe(fmr, tmp, &pool->free_list, list) {
- if (fmr->remap_count) {
- INIT_LIST_HEAD(&fmr_list);
- list_add_tail(&fmr->fmr->list, &fmr_list);
- ib_unmap_fmr(&fmr_list);
- }
- ib_dealloc_fmr(fmr->fmr);
- list_del(&fmr->list);
- kfree(fmr);
- ++i;
- }
-
- if (i < pool->pool_size)
- pr_warn(PFX "pool still has %d regions registered\n",
- pool->pool_size - i);
-
- kfree(pool->cache_bucket);
- kfree(pool);
-}
-EXPORT_SYMBOL(ib_destroy_fmr_pool);
-
-/**
- * ib_flush_fmr_pool - Invalidate all unmapped FMRs
- * @pool:FMR pool to flush
- *
- * Ensure that all unmapped FMRs are fully invalidated.
- */
-int ib_flush_fmr_pool(struct ib_fmr_pool *pool)
-{
- int serial;
- struct ib_pool_fmr *fmr, *next;
-
- /*
- * The free_list holds FMRs that may have been used
- * but have not been remapped enough times to be dirty.
- * Put them on the dirty list now so that the cleanup
- * thread will reap them too.
- */
- spin_lock_irq(&pool->pool_lock);
- list_for_each_entry_safe(fmr, next, &pool->free_list, list) {
- if (fmr->remap_count > 0)
- list_move(&fmr->list, &pool->dirty_list);
- }
- spin_unlock_irq(&pool->pool_lock);
-
- serial = atomic_inc_return(&pool->req_ser);
- kthread_queue_work(pool->worker, &pool->work);
-
- if (wait_event_interruptible(pool->force_wait,
- atomic_read(&pool->flush_ser) - serial >= 0))
- return -EINTR;
-
- return 0;
-}
-EXPORT_SYMBOL(ib_flush_fmr_pool);
-
-/**
- * ib_fmr_pool_map_phys - Map an FMR from an FMR pool.
- * @pool_handle: FMR pool to allocate FMR from
- * @page_list: List of pages to map
- * @list_len: Number of pages in @page_list
- * @io_virtual_address: I/O virtual address for new FMR
- */
-struct ib_pool_fmr *ib_fmr_pool_map_phys(struct ib_fmr_pool *pool_handle,
- u64 *page_list,
- int list_len,
- u64 io_virtual_address)
-{
- struct ib_fmr_pool *pool = pool_handle;
- struct ib_pool_fmr *fmr;
- unsigned long flags;
- int result;
-
- if (list_len < 1 || list_len > pool->max_pages)
- return ERR_PTR(-EINVAL);
-
- spin_lock_irqsave(&pool->pool_lock, flags);
- fmr = ib_fmr_cache_lookup(pool,
- page_list,
- list_len,
- io_virtual_address);
- if (fmr) {
- /* found in cache */
- ++fmr->ref_count;
- if (fmr->ref_count == 1) {
- list_del(&fmr->list);
- }
-
- spin_unlock_irqrestore(&pool->pool_lock, flags);
-
- return fmr;
- }
-
- if (list_empty(&pool->free_list)) {
- spin_unlock_irqrestore(&pool->pool_lock, flags);
- return ERR_PTR(-EAGAIN);
- }
-
- fmr = list_entry(pool->free_list.next, struct ib_pool_fmr, list);
- list_del(&fmr->list);
- hlist_del_init(&fmr->cache_node);
- spin_unlock_irqrestore(&pool->pool_lock, flags);
-
- result = ib_map_phys_fmr(fmr->fmr, page_list, list_len,
- io_virtual_address);
-
- if (result) {
- spin_lock_irqsave(&pool->pool_lock, flags);
- list_add(&fmr->list, &pool->free_list);
- spin_unlock_irqrestore(&pool->pool_lock, flags);
-
- pr_warn(PFX "fmr_map returns %d\n", result);
-
- return ERR_PTR(result);
- }
-
- ++fmr->remap_count;
- fmr->ref_count = 1;
-
- if (pool->cache_bucket) {
- fmr->io_virtual_address = io_virtual_address;
- fmr->page_list_len = list_len;
- memcpy(fmr->page_list, page_list, list_len * sizeof(*page_list));
-
- spin_lock_irqsave(&pool->pool_lock, flags);
- hlist_add_head(&fmr->cache_node,
- pool->cache_bucket + ib_fmr_hash(fmr->page_list[0]));
- spin_unlock_irqrestore(&pool->pool_lock, flags);
- }
-
- return fmr;
-}
-EXPORT_SYMBOL(ib_fmr_pool_map_phys);
-
-/**
- * ib_fmr_pool_unmap - Unmap FMR
- * @fmr:FMR to unmap
- *
- * Unmap an FMR. The FMR mapping may remain valid until the FMR is
- * reused (or until ib_flush_fmr_pool() is called).
- */
-void ib_fmr_pool_unmap(struct ib_pool_fmr *fmr)
-{
- struct ib_fmr_pool *pool;
- unsigned long flags;
-
- pool = fmr->pool;
-
- spin_lock_irqsave(&pool->pool_lock, flags);
-
- --fmr->ref_count;
- if (!fmr->ref_count) {
- if (fmr->remap_count < pool->max_remaps) {
- list_add_tail(&fmr->list, &pool->free_list);
- } else {
- list_add_tail(&fmr->list, &pool->dirty_list);
- if (++pool->dirty_len >= pool->dirty_watermark) {
- atomic_inc(&pool->req_ser);
- kthread_queue_work(pool->worker, &pool->work);
- }
- }
- }
-
- spin_unlock_irqrestore(&pool->pool_lock, flags);
-}
-EXPORT_SYMBOL(ib_fmr_pool_unmap);
diff --git a/include/rdma/ib_fmr_pool.h b/include/rdma/ib_fmr_pool.h
deleted file mode 100644
index 2fd9bfb6d648cc..00000000000000
--- a/include/rdma/ib_fmr_pool.h
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * Copyright (c) 2004 Topspin Corporation. All rights reserved.
- * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
- *
- * This software is available to you under a choice of one of two
- * licenses. You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * COPYING in the main directory of this source tree, or the
- * OpenIB.org BSD license below:
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the following
- * disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#if !defined(IB_FMR_POOL_H)
-#define IB_FMR_POOL_H
-
-#include <rdma/ib_verbs.h>
-
-struct ib_fmr_pool;
-
-/**
- * struct ib_fmr_pool_param - Parameters for creating FMR pool
- * @max_pages_per_fmr:Maximum number of pages per map request.
- * @page_shift: Log2 of sizeof "pages" mapped by this fmr
- * @access:Access flags for FMRs in pool.
- * @pool_size:Number of FMRs to allocate for pool.
- * @dirty_watermark:Flush is triggered when @dirty_watermark dirty
- * FMRs are present.
- * @flush_function:Callback called when unmapped FMRs are flushed and
- * more FMRs are possibly available for mapping
- * @flush_arg:Context passed to user's flush function.
- * @cache:If set, FMRs may be reused after unmapping for identical map
- * requests.
- */
-struct ib_fmr_pool_param {
- int max_pages_per_fmr;
- int page_shift;
- enum ib_access_flags access;
- int pool_size;
- int dirty_watermark;
- void (*flush_function)(struct ib_fmr_pool *pool,
- void *arg);
- void *flush_arg;
- unsigned cache:1;
-};
-
-struct ib_pool_fmr {
- struct ib_fmr *fmr;
- struct ib_fmr_pool *pool;
- struct list_head list;
- struct hlist_node cache_node;
- int ref_count;
- int remap_count;
- u64 io_virtual_address;
- int page_list_len;
- u64 page_list[];
-};
-
-struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd,
- struct ib_fmr_pool_param *params);
-
-void ib_destroy_fmr_pool(struct ib_fmr_pool *pool);
-
-int ib_flush_fmr_pool(struct ib_fmr_pool *pool);
-
-struct ib_pool_fmr *ib_fmr_pool_map_phys(struct ib_fmr_pool *pool_handle,
- u64 *page_list,
- int list_len,
- u64 io_virtual_address);
-
-void ib_fmr_pool_unmap(struct ib_pool_fmr *fmr);
-
-#endif /* IB_FMR_POOL_H */
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH v3 05/13] RDMA/mlx5: Remove FMR leftovers
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
` (3 preceding siblings ...)
2020-05-28 19:45 ` [PATCH v3 04/13] RDMA/core: Remove FMR pool API Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 06/13] RDMA/bnxt_re: " Jason Gunthorpe
` (8 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev
Cc: Gal Pressman, Leon Romanovsky, Max Gurtovoy, oren, shlomin, vladimirk
From: Gal Pressman <galpress@amazon.com>
Remove a few leftovers from FMR functionality which are no longer used.
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---
drivers/infiniband/hw/mlx5/mlx5_ib.h | 8 --------
1 file changed, 8 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 482b54eb9764eb..40c4610177631a 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -675,12 +675,6 @@ struct umr_common {
struct semaphore sem;
};
-enum {
- MLX5_FMR_INVALID,
- MLX5_FMR_VALID,
- MLX5_FMR_BUSY,
-};
-
struct mlx5_cache_ent {
struct list_head head;
/* sync access to the cahce entry
@@ -1253,8 +1247,6 @@ int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
struct ib_port_attr *props);
int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
struct ib_port_attr *props);
-int mlx5_ib_init_fmr(struct mlx5_ib_dev *dev);
-void mlx5_ib_cleanup_fmr(struct mlx5_ib_dev *dev);
void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr,
unsigned long max_page_shift,
int *count, int *shift,
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH v3 06/13] RDMA/bnxt_re: Remove FMR leftovers
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
` (4 preceding siblings ...)
2020-05-28 19:45 ` [PATCH v3 05/13] RDMA/mlx5: Remove FMR leftovers Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 07/13] RDMA/i40iw: " Jason Gunthorpe
` (7 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev
Cc: Devesh Sharma, Max Gurtovoy, oren, Selvin Xavier, shlomin,
Somnath Kotur, Sriharsha Basavapatna, vladimirk
From: Jason Gunthorpe <jgg@mellanox.com>
The bnxt_re_fmr struct is never referenced and the max_fmr items
in bnxt_qplib_dev_attr are never read.
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Cc: Selvin Xavier <selvin.xavier@broadcom.com>
Cc: Devesh Sharma <devesh.sharma@broadcom.com>
Cc: Somnath Kotur <somnath.kotur@broadcom.com>
Cc: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
---
drivers/infiniband/hw/bnxt_re/ib_verbs.c | 3 ---
drivers/infiniband/hw/bnxt_re/ib_verbs.h | 6 ------
drivers/infiniband/hw/bnxt_re/qplib_sp.c | 3 ---
drivers/infiniband/hw/bnxt_re/qplib_sp.h | 2 --
4 files changed, 14 deletions(-)
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index 5a7c090204c537..8b6ad5cddfce99 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -177,9 +177,6 @@ int bnxt_re_query_device(struct ib_device *ibdev,
ib_attr->max_total_mcast_qp_attach = 0;
ib_attr->max_ah = dev_attr->max_ah;
- ib_attr->max_fmr = 0;
- ib_attr->max_map_per_fmr = 0;
-
ib_attr->max_srq = dev_attr->max_srq;
ib_attr->max_srq_wr = dev_attr->max_srq_wqes;
ib_attr->max_srq_sge = dev_attr->max_srq_sges;
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.h b/drivers/infiniband/hw/bnxt_re/ib_verbs.h
index 204c0849ba2847..e5fbbeba6d28d3 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.h
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.h
@@ -122,12 +122,6 @@ struct bnxt_re_frpl {
u64 *page_list;
};
-struct bnxt_re_fmr {
- struct bnxt_re_dev *rdev;
- struct ib_fmr ib_fmr;
- struct bnxt_qplib_mrw qplib_fmr;
-};
-
struct bnxt_re_mw {
struct bnxt_re_dev *rdev;
struct ib_mw ib_mw;
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.c b/drivers/infiniband/hw/bnxt_re/qplib_sp.c
index 66954ff6a2f275..4cd475ea97a24e 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_sp.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.c
@@ -132,9 +132,6 @@ int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw,
attr->max_raw_ethy_qp = le32_to_cpu(sb->max_raw_eth_qp);
attr->max_ah = le32_to_cpu(sb->max_ah);
- attr->max_fmr = le32_to_cpu(sb->max_fmr);
- attr->max_map_per_fmr = sb->max_map_per_fmr;
-
attr->max_srq = le16_to_cpu(sb->max_srq);
attr->max_srq_wqes = le32_to_cpu(sb->max_srq_wr) - 1;
attr->max_srq_sges = sb->max_srq_sge;
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_sp.h b/drivers/infiniband/hw/bnxt_re/qplib_sp.h
index 13d9432d5ce222..6404f0da10517a 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_sp.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_sp.h
@@ -64,8 +64,6 @@ struct bnxt_qplib_dev_attr {
u32 max_mw;
u32 max_raw_ethy_qp;
u32 max_ah;
- u32 max_fmr;
- u32 max_map_per_fmr;
u32 max_srq;
u32 max_srq_wqes;
u32 max_srq_sges;
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH v3 07/13] RDMA/i40iw: Remove FMR leftovers
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
` (5 preceding siblings ...)
2020-05-28 19:45 ` [PATCH v3 06/13] RDMA/bnxt_re: " Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-29 15:20 ` Saleem, Shiraz
2020-05-28 19:45 ` [PATCH v3 08/13] RDMA/mlx4: Remove FMR support for memory registration Jason Gunthorpe
` (6 subsequent siblings)
13 siblings, 1 reply; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev
Cc: Faisal Latif, Max Gurtovoy, oren, Shiraz Saleem, shlomin, vladimirk
From: Jason Gunthorpe <jgg@mellanox.com>
The ibfmr member is never referenced, remove it.
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Cc: Faisal Latif <faisal.latif@intel.com>
Cc: Shiraz Saleem <shiraz.saleem@intel.com>
---
drivers/infiniband/hw/i40iw/i40iw.h | 9 ---------
drivers/infiniband/hw/i40iw/i40iw_verbs.h | 1 -
2 files changed, 10 deletions(-)
diff --git a/drivers/infiniband/hw/i40iw/i40iw.h b/drivers/infiniband/hw/i40iw/i40iw.h
index 3c62c9327a9c4c..49d92638e0dbbf 100644
--- a/drivers/infiniband/hw/i40iw/i40iw.h
+++ b/drivers/infiniband/hw/i40iw/i40iw.h
@@ -381,15 +381,6 @@ static inline struct i40iw_mr *to_iwmr(struct ib_mr *ibmr)
return container_of(ibmr, struct i40iw_mr, ibmr);
}
-/**
- * to_iwmr_from_ibfmr - get device memory region
- * @ibfmr: ib fmr
- **/
-static inline struct i40iw_mr *to_iwmr_from_ibfmr(struct ib_fmr *ibfmr)
-{
- return container_of(ibfmr, struct i40iw_mr, ibfmr);
-}
-
/**
* to_iwmw - get device memory window
* @ibmw: ib memory window
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.h b/drivers/infiniband/hw/i40iw/i40iw_verbs.h
index 3a413752ccc38c..331bc21cbcc731 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_verbs.h
+++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.h
@@ -89,7 +89,6 @@ struct i40iw_mr {
union {
struct ib_mr ibmr;
struct ib_mw ibmw;
- struct ib_fmr ibfmr;
};
struct ib_umem *region;
u16 type;
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* RE: [PATCH v3 07/13] RDMA/i40iw: Remove FMR leftovers
2020-05-28 19:45 ` [PATCH v3 07/13] RDMA/i40iw: " Jason Gunthorpe
@ 2020-05-29 15:20 ` Saleem, Shiraz
0 siblings, 0 replies; 20+ messages in thread
From: Saleem, Shiraz @ 2020-05-29 15:20 UTC (permalink / raw)
To: Jason Gunthorpe, linux-rdma, netdev
Cc: Latif, Faisal, Max Gurtovoy, oren, shlomin, vladimirk
> Subject: [PATCH v3 07/13] RDMA/i40iw: Remove FMR leftovers
>
> From: Jason Gunthorpe <jgg@mellanox.com>
>
> The ibfmr member is never referenced, remove it.
>
> Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
> Cc: Faisal Latif <faisal.latif@intel.com>
> Cc: Shiraz Saleem <shiraz.saleem@intel.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
^ permalink raw reply [flat|nested] 20+ messages in thread
* [PATCH v3 08/13] RDMA/mlx4: Remove FMR support for memory registration
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
` (6 preceding siblings ...)
2020-05-28 19:45 ` [PATCH v3 07/13] RDMA/i40iw: " Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 09/13] RDMA/mthca: " Jason Gunthorpe
` (5 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev; +Cc: Max Gurtovoy, oren, shlomin, vladimirk, Yishai Hadas
From: Max Gurtovoy <maxg@mellanox.com>
HCA's that are driven by mlx4 driver support FRWR method to register
memory. Remove the ancient and unsafe FMR method.
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Cc: Yishai Hadas <yishaih@mellanox.com>
---
drivers/infiniband/hw/mlx4/main.c | 11 --
drivers/infiniband/hw/mlx4/mlx4_ib.h | 16 --
drivers/infiniband/hw/mlx4/mr.c | 93 -----------
drivers/net/ethernet/mellanox/mlx4/main.c | 2 -
drivers/net/ethernet/mellanox/mlx4/mr.c | 183 ----------------------
include/linux/mlx4/device.h | 22 +--
6 files changed, 2 insertions(+), 325 deletions(-)
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 275722cec8c675..816d28854a8e11 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -558,7 +558,6 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
props->max_mcast_grp;
- props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
props->hca_core_clock = dev->dev->caps.hca_core_clock * 1000UL;
props->timestamp_mask = 0xFFFFFFFFFFFFULL;
props->max_ah = INT_MAX;
@@ -2600,13 +2599,6 @@ static const struct ib_device_ops mlx4_ib_dev_wq_ops = {
.modify_wq = mlx4_ib_modify_wq,
};
-static const struct ib_device_ops mlx4_ib_dev_fmr_ops = {
- .alloc_fmr = mlx4_ib_fmr_alloc,
- .dealloc_fmr = mlx4_ib_fmr_dealloc,
- .map_phys_fmr = mlx4_ib_map_phys_fmr,
- .unmap_fmr = mlx4_ib_unmap_fmr,
-};
-
static const struct ib_device_ops mlx4_ib_dev_mw_ops = {
.alloc_mw = mlx4_ib_alloc_mw,
.dealloc_mw = mlx4_ib_dealloc_mw,
@@ -2724,9 +2716,6 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_wq_ops);
}
- if (!mlx4_is_slave(ibdev->dev))
- ib_set_device_ops(&ibdev->ib_dev, &mlx4_ib_dev_fmr_ops);
-
if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) {
ibdev->ib_dev.uverbs_cmd_mask |=
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index 182a237b87f747..6f4ea1067095e4 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -146,11 +146,6 @@ struct mlx4_ib_mw {
struct mlx4_mw mmw;
};
-struct mlx4_ib_fmr {
- struct ib_fmr ibfmr;
- struct mlx4_fmr mfmr;
-};
-
#define MAX_REGS_PER_FLOW 2
struct mlx4_flow_reg_id {
@@ -679,11 +674,6 @@ static inline struct mlx4_ib_mw *to_mmw(struct ib_mw *ibmw)
return container_of(ibmw, struct mlx4_ib_mw, ibmw);
}
-static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
-{
- return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
-}
-
static inline struct mlx4_ib_flow *to_mflow(struct ib_flow *ibflow)
{
return container_of(ibflow, struct mlx4_ib_flow, ibflow);
@@ -794,12 +784,6 @@ int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
-struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
- struct ib_fmr_attr *fmr_attr);
-int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
- u64 iova);
-int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
-int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
struct ib_port_attr *props, int netw_view);
int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
index b0121c90c561fa..e2fb71b23c804a 100644
--- a/drivers/infiniband/hw/mlx4/mr.c
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -698,99 +698,6 @@ struct ib_mr *mlx4_ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
return ERR_PTR(err);
}
-struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int acc,
- struct ib_fmr_attr *fmr_attr)
-{
- struct mlx4_ib_dev *dev = to_mdev(pd->device);
- struct mlx4_ib_fmr *fmr;
- int err = -ENOMEM;
-
- fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
- if (!fmr)
- return ERR_PTR(-ENOMEM);
-
- err = mlx4_fmr_alloc(dev->dev, to_mpd(pd)->pdn, convert_access(acc),
- fmr_attr->max_pages, fmr_attr->max_maps,
- fmr_attr->page_shift, &fmr->mfmr);
- if (err)
- goto err_free;
-
- err = mlx4_fmr_enable(to_mdev(pd->device)->dev, &fmr->mfmr);
- if (err)
- goto err_mr;
-
- fmr->ibfmr.rkey = fmr->ibfmr.lkey = fmr->mfmr.mr.key;
-
- return &fmr->ibfmr;
-
-err_mr:
- (void) mlx4_mr_free(to_mdev(pd->device)->dev, &fmr->mfmr.mr);
-
-err_free:
- kfree(fmr);
-
- return ERR_PTR(err);
-}
-
-int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
- int npages, u64 iova)
-{
- struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
- struct mlx4_ib_dev *dev = to_mdev(ifmr->ibfmr.device);
-
- return mlx4_map_phys_fmr(dev->dev, &ifmr->mfmr, page_list, npages, iova,
- &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey);
-}
-
-int mlx4_ib_unmap_fmr(struct list_head *fmr_list)
-{
- struct ib_fmr *ibfmr;
- int err;
- struct mlx4_dev *mdev = NULL;
-
- list_for_each_entry(ibfmr, fmr_list, list) {
- if (mdev && to_mdev(ibfmr->device)->dev != mdev)
- return -EINVAL;
- mdev = to_mdev(ibfmr->device)->dev;
- }
-
- if (!mdev)
- return 0;
-
- list_for_each_entry(ibfmr, fmr_list, list) {
- struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
-
- mlx4_fmr_unmap(mdev, &ifmr->mfmr, &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey);
- }
-
- /*
- * Make sure all MPT status updates are visible before issuing
- * SYNC_TPT firmware command.
- */
- wmb();
-
- err = mlx4_SYNC_TPT(mdev);
- if (err)
- pr_warn("SYNC_TPT error %d when "
- "unmapping FMRs\n", err);
-
- return 0;
-}
-
-int mlx4_ib_fmr_dealloc(struct ib_fmr *ibfmr)
-{
- struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
- struct mlx4_ib_dev *dev = to_mdev(ibfmr->device);
- int err;
-
- err = mlx4_fmr_free(dev->dev, &ifmr->mfmr);
-
- if (!err)
- kfree(ifmr);
-
- return err;
-}
-
static int mlx4_set_page(struct ib_mr *ibmr, u64 addr)
{
struct mlx4_ib_mr *mr = to_mmr(ibmr);
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index c72c4e1ea383b8..3d9aa7da95e95c 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -2345,8 +2345,6 @@ static int mlx4_init_hca(struct mlx4_dev *dev)
goto out_free;
}
- dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1;
-
if (enable_4k_uar || !dev->persist->num_vfs) {
init_hca->log_uar_sz = ilog2(dev->caps.num_uars) +
PAGE_SHIFT - DEFAULT_UAR_PAGE_SHIFT;
diff --git a/drivers/net/ethernet/mellanox/mlx4/mr.c b/drivers/net/ethernet/mellanox/mlx4/mr.c
index 1a11bc0e16123e..d2986f1f2db02a 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mr.c
+++ b/drivers/net/ethernet/mellanox/mlx4/mr.c
@@ -966,189 +966,6 @@ void mlx4_cleanup_mr_table(struct mlx4_dev *dev)
mlx4_bitmap_cleanup(&mr_table->mpt_bitmap);
}
-static inline int mlx4_check_fmr(struct mlx4_fmr *fmr, u64 *page_list,
- int npages, u64 iova)
-{
- int i, page_mask;
-
- if (npages > fmr->max_pages)
- return -EINVAL;
-
- page_mask = (1 << fmr->page_shift) - 1;
-
- /* We are getting page lists, so va must be page aligned. */
- if (iova & page_mask)
- return -EINVAL;
-
- /* Trust the user not to pass misaligned data in page_list */
- if (0)
- for (i = 0; i < npages; ++i) {
- if (page_list[i] & ~page_mask)
- return -EINVAL;
- }
-
- if (fmr->maps >= fmr->max_maps)
- return -EINVAL;
-
- return 0;
-}
-
-int mlx4_map_phys_fmr(struct mlx4_dev *dev, struct mlx4_fmr *fmr, u64 *page_list,
- int npages, u64 iova, u32 *lkey, u32 *rkey)
-{
- u32 key;
- int i, err;
-
- err = mlx4_check_fmr(fmr, page_list, npages, iova);
- if (err)
- return err;
-
- ++fmr->maps;
-
- key = key_to_hw_index(fmr->mr.key);
- key += dev->caps.num_mpts;
- *lkey = *rkey = fmr->mr.key = hw_index_to_key(key);
-
- *(u8 *) fmr->mpt = MLX4_MPT_STATUS_SW;
-
- /* Make sure MPT status is visible before writing MTT entries */
- wmb();
-
- dma_sync_single_for_cpu(&dev->persist->pdev->dev, fmr->dma_handle,
- npages * sizeof(u64), DMA_TO_DEVICE);
-
- for (i = 0; i < npages; ++i)
- fmr->mtts[i] = cpu_to_be64(page_list[i] | MLX4_MTT_FLAG_PRESENT);
-
- dma_sync_single_for_device(&dev->persist->pdev->dev, fmr->dma_handle,
- npages * sizeof(u64), DMA_TO_DEVICE);
-
- fmr->mpt->key = cpu_to_be32(key);
- fmr->mpt->lkey = cpu_to_be32(key);
- fmr->mpt->length = cpu_to_be64(npages * (1ull << fmr->page_shift));
- fmr->mpt->start = cpu_to_be64(iova);
-
- /* Make MTT entries are visible before setting MPT status */
- wmb();
-
- *(u8 *) fmr->mpt = MLX4_MPT_STATUS_HW;
-
- /* Make sure MPT status is visible before consumer can use FMR */
- wmb();
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(mlx4_map_phys_fmr);
-
-int mlx4_fmr_alloc(struct mlx4_dev *dev, u32 pd, u32 access, int max_pages,
- int max_maps, u8 page_shift, struct mlx4_fmr *fmr)
-{
- struct mlx4_priv *priv = mlx4_priv(dev);
- int err = -ENOMEM;
-
- if (max_maps > dev->caps.max_fmr_maps)
- return -EINVAL;
-
- if (page_shift < (ffs(dev->caps.page_size_cap) - 1) || page_shift >= 32)
- return -EINVAL;
-
- /* All MTTs must fit in the same page */
- if (max_pages * sizeof(*fmr->mtts) > PAGE_SIZE)
- return -EINVAL;
-
- fmr->page_shift = page_shift;
- fmr->max_pages = max_pages;
- fmr->max_maps = max_maps;
- fmr->maps = 0;
-
- err = mlx4_mr_alloc(dev, pd, 0, 0, access, max_pages,
- page_shift, &fmr->mr);
- if (err)
- return err;
-
- fmr->mtts = mlx4_table_find(&priv->mr_table.mtt_table,
- fmr->mr.mtt.offset,
- &fmr->dma_handle);
-
- if (!fmr->mtts) {
- err = -ENOMEM;
- goto err_free;
- }
-
- return 0;
-
-err_free:
- (void) mlx4_mr_free(dev, &fmr->mr);
- return err;
-}
-EXPORT_SYMBOL_GPL(mlx4_fmr_alloc);
-
-int mlx4_fmr_enable(struct mlx4_dev *dev, struct mlx4_fmr *fmr)
-{
- struct mlx4_priv *priv = mlx4_priv(dev);
- int err;
-
- err = mlx4_mr_enable(dev, &fmr->mr);
- if (err)
- return err;
-
- fmr->mpt = mlx4_table_find(&priv->mr_table.dmpt_table,
- key_to_hw_index(fmr->mr.key), NULL);
- if (!fmr->mpt)
- return -ENOMEM;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(mlx4_fmr_enable);
-
-void mlx4_fmr_unmap(struct mlx4_dev *dev, struct mlx4_fmr *fmr,
- u32 *lkey, u32 *rkey)
-{
- if (!fmr->maps)
- return;
-
- /* To unmap: it is sufficient to take back ownership from HW */
- *(u8 *)fmr->mpt = MLX4_MPT_STATUS_SW;
-
- /* Make sure MPT status is visible */
- wmb();
-
- fmr->maps = 0;
-}
-EXPORT_SYMBOL_GPL(mlx4_fmr_unmap);
-
-int mlx4_fmr_free(struct mlx4_dev *dev, struct mlx4_fmr *fmr)
-{
- int ret;
-
- if (fmr->maps)
- return -EBUSY;
- if (fmr->mr.enabled == MLX4_MPT_EN_HW) {
- /* In case of FMR was enabled and unmapped
- * make sure to give ownership of MPT back to HW
- * so HW2SW_MPT command will success.
- */
- *(u8 *)fmr->mpt = MLX4_MPT_STATUS_SW;
- /* Make sure MPT status is visible before changing MPT fields */
- wmb();
- fmr->mpt->length = 0;
- fmr->mpt->start = 0;
- /* Make sure MPT data is visible after changing MPT status */
- wmb();
- *(u8 *)fmr->mpt = MLX4_MPT_STATUS_HW;
- /* make sure MPT status is visible */
- wmb();
- }
-
- ret = mlx4_mr_free(dev, &fmr->mr);
- if (ret)
- return ret;
- fmr->mr.enabled = MLX4_MPT_DISABLED;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(mlx4_fmr_free);
-
int mlx4_SYNC_TPT(struct mlx4_dev *dev)
{
return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_SYNC_TPT,
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 20372de0b587cf..06e066e04a4bb6 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -573,7 +573,6 @@ struct mlx4_caps {
int reserved_eqs;
int num_comp_vectors;
int num_mpts;
- int max_fmr_maps;
int num_mtts;
int fmr_reserved_mtts;
int reserved_mtts;
@@ -707,17 +706,6 @@ struct mlx4_mw {
int enabled;
};
-struct mlx4_fmr {
- struct mlx4_mr mr;
- struct mlx4_mpt_entry *mpt;
- __be64 *mtts;
- dma_addr_t dma_handle;
- int max_pages;
- int max_maps;
- int maps;
- u8 page_shift;
-};
-
struct mlx4_uar {
unsigned long pfn;
int index;
@@ -1412,14 +1400,6 @@ int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx);
int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index);
void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, u16 vlan);
-int mlx4_map_phys_fmr(struct mlx4_dev *dev, struct mlx4_fmr *fmr, u64 *page_list,
- int npages, u64 iova, u32 *lkey, u32 *rkey);
-int mlx4_fmr_alloc(struct mlx4_dev *dev, u32 pd, u32 access, int max_pages,
- int max_maps, u8 page_shift, struct mlx4_fmr *fmr);
-int mlx4_fmr_enable(struct mlx4_dev *dev, struct mlx4_fmr *fmr);
-void mlx4_fmr_unmap(struct mlx4_dev *dev, struct mlx4_fmr *fmr,
- u32 *lkey, u32 *rkey);
-int mlx4_fmr_free(struct mlx4_dev *dev, struct mlx4_fmr *fmr);
int mlx4_SYNC_TPT(struct mlx4_dev *dev);
int mlx4_test_interrupt(struct mlx4_dev *dev, int vector);
int mlx4_test_async(struct mlx4_dev *dev);
@@ -1522,6 +1502,8 @@ int mlx4_vf_smi_enabled(struct mlx4_dev *dev, int slave, int port);
int mlx4_vf_get_enable_smi_admin(struct mlx4_dev *dev, int slave, int port);
int mlx4_vf_set_enable_smi_admin(struct mlx4_dev *dev, int slave, int port,
int enable);
+
+struct mlx4_mpt_entry;
int mlx4_mr_hw_get_mpt(struct mlx4_dev *dev, struct mlx4_mr *mmr,
struct mlx4_mpt_entry ***mpt_entry);
int mlx4_mr_hw_write_mpt(struct mlx4_dev *dev, struct mlx4_mr *mmr,
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH v3 09/13] RDMA/mthca: Remove FMR support for memory registration
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
` (7 preceding siblings ...)
2020-05-28 19:45 ` [PATCH v3 08/13] RDMA/mlx4: Remove FMR support for memory registration Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 10/13] RDMA/rdmavt: Remove FMR " Jason Gunthorpe
` (4 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev; +Cc: Max Gurtovoy, oren, shlomin, vladimirk
From: Max Gurtovoy <maxg@mellanox.com>
Remove the ancient and unsafe FMR method.
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---
drivers/infiniband/hw/mthca/mthca_dev.h | 10 -
drivers/infiniband/hw/mthca/mthca_mr.c | 262 +------------------
drivers/infiniband/hw/mthca/mthca_provider.c | 86 ------
drivers/infiniband/hw/mthca/mthca_provider.h | 23 --
4 files changed, 1 insertion(+), 380 deletions(-)
diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h
index 599794c5a78f0f..7550e9d03decea 100644
--- a/drivers/infiniband/hw/mthca/mthca_dev.h
+++ b/drivers/infiniband/hw/mthca/mthca_dev.h
@@ -478,16 +478,6 @@ int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd,
u32 access, struct mthca_mr *mr);
void mthca_free_mr(struct mthca_dev *dev, struct mthca_mr *mr);
-int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd,
- u32 access, struct mthca_fmr *fmr);
-int mthca_tavor_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
- int list_len, u64 iova);
-void mthca_tavor_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr);
-int mthca_arbel_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
- int list_len, u64 iova);
-void mthca_arbel_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr);
-int mthca_free_fmr(struct mthca_dev *dev, struct mthca_fmr *fmr);
-
int mthca_map_eq_icm(struct mthca_dev *dev, u64 icm_virt);
void mthca_unmap_eq_icm(struct mthca_dev *dev);
diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c
index 4250b2c18c6492..ce0e0867e4883b 100644
--- a/drivers/infiniband/hw/mthca/mthca_mr.c
+++ b/drivers/infiniband/hw/mthca/mthca_mr.c
@@ -541,7 +541,7 @@ int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd,
return err;
}
-/* Free mr or fmr */
+/* Free mr */
static void mthca_free_region(struct mthca_dev *dev, u32 lkey)
{
mthca_table_put(dev, dev->mr_table.mpt_table,
@@ -564,266 +564,6 @@ void mthca_free_mr(struct mthca_dev *dev, struct mthca_mr *mr)
mthca_free_mtt(dev, mr->mtt);
}
-int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd,
- u32 access, struct mthca_fmr *mr)
-{
- struct mthca_mpt_entry *mpt_entry;
- struct mthca_mailbox *mailbox;
- u64 mtt_seg;
- u32 key, idx;
- int list_len = mr->attr.max_pages;
- int err = -ENOMEM;
- int i;
-
- if (mr->attr.page_shift < 12 || mr->attr.page_shift >= 32)
- return -EINVAL;
-
- /* For Arbel, all MTTs must fit in the same page. */
- if (mthca_is_memfree(dev) &&
- mr->attr.max_pages * sizeof *mr->mem.arbel.mtts > PAGE_SIZE)
- return -EINVAL;
-
- mr->maps = 0;
-
- key = mthca_alloc(&dev->mr_table.mpt_alloc);
- if (key == -1)
- return -ENOMEM;
- key = adjust_key(dev, key);
-
- idx = key & (dev->limits.num_mpts - 1);
- mr->ibmr.rkey = mr->ibmr.lkey = hw_index_to_key(dev, key);
-
- if (mthca_is_memfree(dev)) {
- err = mthca_table_get(dev, dev->mr_table.mpt_table, key);
- if (err)
- goto err_out_mpt_free;
-
- mr->mem.arbel.mpt = mthca_table_find(dev->mr_table.mpt_table, key, NULL);
- BUG_ON(!mr->mem.arbel.mpt);
- } else
- mr->mem.tavor.mpt = dev->mr_table.tavor_fmr.mpt_base +
- sizeof *(mr->mem.tavor.mpt) * idx;
-
- mr->mtt = __mthca_alloc_mtt(dev, list_len, dev->mr_table.fmr_mtt_buddy);
- if (IS_ERR(mr->mtt)) {
- err = PTR_ERR(mr->mtt);
- goto err_out_table;
- }
-
- mtt_seg = mr->mtt->first_seg * dev->limits.mtt_seg_size;
-
- if (mthca_is_memfree(dev)) {
- mr->mem.arbel.mtts = mthca_table_find(dev->mr_table.mtt_table,
- mr->mtt->first_seg,
- &mr->mem.arbel.dma_handle);
- BUG_ON(!mr->mem.arbel.mtts);
- } else
- mr->mem.tavor.mtts = dev->mr_table.tavor_fmr.mtt_base + mtt_seg;
-
- mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
- if (IS_ERR(mailbox)) {
- err = PTR_ERR(mailbox);
- goto err_out_free_mtt;
- }
-
- mpt_entry = mailbox->buf;
-
- mpt_entry->flags = cpu_to_be32(MTHCA_MPT_FLAG_SW_OWNS |
- MTHCA_MPT_FLAG_MIO |
- MTHCA_MPT_FLAG_REGION |
- access);
-
- mpt_entry->page_size = cpu_to_be32(mr->attr.page_shift - 12);
- mpt_entry->key = cpu_to_be32(key);
- mpt_entry->pd = cpu_to_be32(pd);
- memset(&mpt_entry->start, 0,
- sizeof *mpt_entry - offsetof(struct mthca_mpt_entry, start));
- mpt_entry->mtt_seg = cpu_to_be64(dev->mr_table.mtt_base + mtt_seg);
-
- if (0) {
- mthca_dbg(dev, "Dumping MPT entry %08x:\n", mr->ibmr.lkey);
- for (i = 0; i < sizeof (struct mthca_mpt_entry) / 4; ++i) {
- if (i % 4 == 0)
- printk("[%02x] ", i * 4);
- printk(" %08x", be32_to_cpu(((__be32 *) mpt_entry)[i]));
- if ((i + 1) % 4 == 0)
- printk("\n");
- }
- }
-
- err = mthca_SW2HW_MPT(dev, mailbox,
- key & (dev->limits.num_mpts - 1));
- if (err) {
- mthca_warn(dev, "SW2HW_MPT failed (%d)\n", err);
- goto err_out_mailbox_free;
- }
-
- mthca_free_mailbox(dev, mailbox);
- return 0;
-
-err_out_mailbox_free:
- mthca_free_mailbox(dev, mailbox);
-
-err_out_free_mtt:
- mthca_free_mtt(dev, mr->mtt);
-
-err_out_table:
- mthca_table_put(dev, dev->mr_table.mpt_table, key);
-
-err_out_mpt_free:
- mthca_free(&dev->mr_table.mpt_alloc, key);
- return err;
-}
-
-int mthca_free_fmr(struct mthca_dev *dev, struct mthca_fmr *fmr)
-{
- if (fmr->maps)
- return -EBUSY;
-
- mthca_free_region(dev, fmr->ibmr.lkey);
- mthca_free_mtt(dev, fmr->mtt);
-
- return 0;
-}
-
-static inline int mthca_check_fmr(struct mthca_fmr *fmr, u64 *page_list,
- int list_len, u64 iova)
-{
- int i, page_mask;
-
- if (list_len > fmr->attr.max_pages)
- return -EINVAL;
-
- page_mask = (1 << fmr->attr.page_shift) - 1;
-
- /* We are getting page lists, so va must be page aligned. */
- if (iova & page_mask)
- return -EINVAL;
-
- /* Trust the user not to pass misaligned data in page_list */
- if (0)
- for (i = 0; i < list_len; ++i) {
- if (page_list[i] & ~page_mask)
- return -EINVAL;
- }
-
- if (fmr->maps >= fmr->attr.max_maps)
- return -EINVAL;
-
- return 0;
-}
-
-
-int mthca_tavor_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
- int list_len, u64 iova)
-{
- struct mthca_fmr *fmr = to_mfmr(ibfmr);
- struct mthca_dev *dev = to_mdev(ibfmr->device);
- struct mthca_mpt_entry mpt_entry;
- u32 key;
- int i, err;
-
- err = mthca_check_fmr(fmr, page_list, list_len, iova);
- if (err)
- return err;
-
- ++fmr->maps;
-
- key = tavor_key_to_hw_index(fmr->ibmr.lkey);
- key += dev->limits.num_mpts;
- fmr->ibmr.lkey = fmr->ibmr.rkey = tavor_hw_index_to_key(key);
-
- writeb(MTHCA_MPT_STATUS_SW, fmr->mem.tavor.mpt);
-
- for (i = 0; i < list_len; ++i) {
- __be64 mtt_entry = cpu_to_be64(page_list[i] |
- MTHCA_MTT_FLAG_PRESENT);
- mthca_write64_raw(mtt_entry, fmr->mem.tavor.mtts + i);
- }
-
- mpt_entry.lkey = cpu_to_be32(key);
- mpt_entry.length = cpu_to_be64(list_len * (1ull << fmr->attr.page_shift));
- mpt_entry.start = cpu_to_be64(iova);
-
- __raw_writel((__force u32) mpt_entry.lkey, &fmr->mem.tavor.mpt->key);
- memcpy_toio(&fmr->mem.tavor.mpt->start, &mpt_entry.start,
- offsetof(struct mthca_mpt_entry, window_count) -
- offsetof(struct mthca_mpt_entry, start));
-
- writeb(MTHCA_MPT_STATUS_HW, fmr->mem.tavor.mpt);
-
- return 0;
-}
-
-int mthca_arbel_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
- int list_len, u64 iova)
-{
- struct mthca_fmr *fmr = to_mfmr(ibfmr);
- struct mthca_dev *dev = to_mdev(ibfmr->device);
- u32 key;
- int i, err;
-
- err = mthca_check_fmr(fmr, page_list, list_len, iova);
- if (err)
- return err;
-
- ++fmr->maps;
-
- key = arbel_key_to_hw_index(fmr->ibmr.lkey);
- if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
- key += SINAI_FMR_KEY_INC;
- else
- key += dev->limits.num_mpts;
- fmr->ibmr.lkey = fmr->ibmr.rkey = arbel_hw_index_to_key(key);
-
- *(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_SW;
-
- wmb();
-
- dma_sync_single_for_cpu(&dev->pdev->dev, fmr->mem.arbel.dma_handle,
- list_len * sizeof(u64), DMA_TO_DEVICE);
-
- for (i = 0; i < list_len; ++i)
- fmr->mem.arbel.mtts[i] = cpu_to_be64(page_list[i] |
- MTHCA_MTT_FLAG_PRESENT);
-
- dma_sync_single_for_device(&dev->pdev->dev, fmr->mem.arbel.dma_handle,
- list_len * sizeof(u64), DMA_TO_DEVICE);
-
- fmr->mem.arbel.mpt->key = cpu_to_be32(key);
- fmr->mem.arbel.mpt->lkey = cpu_to_be32(key);
- fmr->mem.arbel.mpt->length = cpu_to_be64(list_len * (1ull << fmr->attr.page_shift));
- fmr->mem.arbel.mpt->start = cpu_to_be64(iova);
-
- wmb();
-
- *(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_HW;
-
- wmb();
-
- return 0;
-}
-
-void mthca_tavor_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr)
-{
- if (!fmr->maps)
- return;
-
- fmr->maps = 0;
-
- writeb(MTHCA_MPT_STATUS_SW, fmr->mem.tavor.mpt);
-}
-
-void mthca_arbel_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr)
-{
- if (!fmr->maps)
- return;
-
- fmr->maps = 0;
-
- *(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_SW;
-}
-
int mthca_init_mr_table(struct mthca_dev *dev)
{
phys_addr_t addr;
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index bc3e3d741ca381..de2124a8ee2be6 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -958,69 +958,6 @@ static int mthca_dereg_mr(struct ib_mr *mr, struct ib_udata *udata)
return 0;
}
-static struct ib_fmr *mthca_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
- struct ib_fmr_attr *fmr_attr)
-{
- struct mthca_fmr *fmr;
- int err;
-
- fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
- if (!fmr)
- return ERR_PTR(-ENOMEM);
-
- memcpy(&fmr->attr, fmr_attr, sizeof *fmr_attr);
- err = mthca_fmr_alloc(to_mdev(pd->device), to_mpd(pd)->pd_num,
- convert_access(mr_access_flags), fmr);
-
- if (err) {
- kfree(fmr);
- return ERR_PTR(err);
- }
-
- return &fmr->ibmr;
-}
-
-static int mthca_dealloc_fmr(struct ib_fmr *fmr)
-{
- struct mthca_fmr *mfmr = to_mfmr(fmr);
- int err;
-
- err = mthca_free_fmr(to_mdev(fmr->device), mfmr);
- if (err)
- return err;
-
- kfree(mfmr);
- return 0;
-}
-
-static int mthca_unmap_fmr(struct list_head *fmr_list)
-{
- struct ib_fmr *fmr;
- int err;
- struct mthca_dev *mdev = NULL;
-
- list_for_each_entry(fmr, fmr_list, list) {
- if (mdev && to_mdev(fmr->device) != mdev)
- return -EINVAL;
- mdev = to_mdev(fmr->device);
- }
-
- if (!mdev)
- return 0;
-
- if (mthca_is_memfree(mdev)) {
- list_for_each_entry(fmr, fmr_list, list)
- mthca_arbel_fmr_unmap(mdev, to_mfmr(fmr));
-
- wmb();
- } else
- list_for_each_entry(fmr, fmr_list, list)
- mthca_tavor_fmr_unmap(mdev, to_mfmr(fmr));
-
- err = mthca_SYNC_TPT(mdev);
- return err;
-}
-
static ssize_t hw_rev_show(struct device *device,
struct device_attribute *attr, char *buf)
{
@@ -1204,20 +1141,6 @@ static const struct ib_device_ops mthca_dev_tavor_srq_ops = {
INIT_RDMA_OBJ_SIZE(ib_srq, mthca_srq, ibsrq),
};
-static const struct ib_device_ops mthca_dev_arbel_fmr_ops = {
- .alloc_fmr = mthca_alloc_fmr,
- .dealloc_fmr = mthca_dealloc_fmr,
- .map_phys_fmr = mthca_arbel_map_phys_fmr,
- .unmap_fmr = mthca_unmap_fmr,
-};
-
-static const struct ib_device_ops mthca_dev_tavor_fmr_ops = {
- .alloc_fmr = mthca_alloc_fmr,
- .dealloc_fmr = mthca_dealloc_fmr,
- .map_phys_fmr = mthca_tavor_map_phys_fmr,
- .unmap_fmr = mthca_unmap_fmr,
-};
-
static const struct ib_device_ops mthca_dev_arbel_ops = {
.post_recv = mthca_arbel_post_receive,
.post_send = mthca_arbel_post_send,
@@ -1276,15 +1199,6 @@ int mthca_register_device(struct mthca_dev *dev)
&mthca_dev_tavor_srq_ops);
}
- if (dev->mthca_flags & MTHCA_FLAG_FMR) {
- if (mthca_is_memfree(dev))
- ib_set_device_ops(&dev->ib_dev,
- &mthca_dev_arbel_fmr_ops);
- else
- ib_set_device_ops(&dev->ib_dev,
- &mthca_dev_tavor_fmr_ops);
- }
-
ib_set_device_ops(&dev->ib_dev, &mthca_dev_ops);
if (mthca_is_memfree(dev))
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.h b/drivers/infiniband/hw/mthca/mthca_provider.h
index 596acc45569b9a..84c64bff0d92b2 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.h
+++ b/drivers/infiniband/hw/mthca/mthca_provider.h
@@ -76,24 +76,6 @@ struct mthca_mr {
struct mthca_mtt *mtt;
};
-struct mthca_fmr {
- struct ib_fmr ibmr;
- struct ib_fmr_attr attr;
- struct mthca_mtt *mtt;
- int maps;
- union {
- struct {
- struct mthca_mpt_entry __iomem *mpt;
- u64 __iomem *mtts;
- } tavor;
- struct {
- struct mthca_mpt_entry *mpt;
- __be64 *mtts;
- dma_addr_t dma_handle;
- } arbel;
- } mem;
-};
-
struct mthca_pd {
struct ib_pd ibpd;
u32 pd_num;
@@ -301,11 +283,6 @@ static inline struct mthca_ucontext *to_mucontext(struct ib_ucontext *ibucontext
return container_of(ibucontext, struct mthca_ucontext, ibucontext);
}
-static inline struct mthca_fmr *to_mfmr(struct ib_fmr *ibmr)
-{
- return container_of(ibmr, struct mthca_fmr, ibmr);
-}
-
static inline struct mthca_mr *to_mmr(struct ib_mr *ibmr)
{
return container_of(ibmr, struct mthca_mr, ibmr);
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH v3 10/13] RDMA/rdmavt: Remove FMR memory registration
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
` (8 preceding siblings ...)
2020-05-28 19:45 ` [PATCH v3 09/13] RDMA/mthca: " Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 11/13] RDMA/core: Remove FMR device ops Jason Gunthorpe
` (3 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev
Cc: Dennis Dalessandro, Max Gurtovoy, Mike Marciniszyn, oren,
shlomin, vladimirk
From: Max Gurtovoy <maxg@mellanox.com>
Use FRWR method to register memory by default and remove the ancient and
unsafe FMR method.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Tested-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Cc: Dennis Dalessandro <dennis.dalessandro@intel.com>
Cc: Mike Marciniszyn <mike.marciniszyn@intel.com>
---
drivers/infiniband/sw/rdmavt/mr.c | 154 ------------------------------
drivers/infiniband/sw/rdmavt/mr.h | 15 ---
drivers/infiniband/sw/rdmavt/vt.c | 4 -
3 files changed, 173 deletions(-)
diff --git a/drivers/infiniband/sw/rdmavt/mr.c b/drivers/infiniband/sw/rdmavt/mr.c
index 72f6534fbb52b7..ddb0c0d771c257 100644
--- a/drivers/infiniband/sw/rdmavt/mr.c
+++ b/drivers/infiniband/sw/rdmavt/mr.c
@@ -713,160 +713,6 @@ int rvt_invalidate_rkey(struct rvt_qp *qp, u32 rkey)
}
EXPORT_SYMBOL(rvt_invalidate_rkey);
-/**
- * rvt_alloc_fmr - allocate a fast memory region
- * @pd: the protection domain for this memory region
- * @mr_access_flags: access flags for this memory region
- * @fmr_attr: fast memory region attributes
- *
- * Return: the memory region on success, otherwise returns an errno.
- */
-struct ib_fmr *rvt_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
- struct ib_fmr_attr *fmr_attr)
-{
- struct rvt_fmr *fmr;
- int m;
- struct ib_fmr *ret;
- int rval = -ENOMEM;
-
- /* Allocate struct plus pointers to first level page tables. */
- m = (fmr_attr->max_pages + RVT_SEGSZ - 1) / RVT_SEGSZ;
- fmr = kzalloc(struct_size(fmr, mr.map, m), GFP_KERNEL);
- if (!fmr)
- goto bail;
-
- rval = rvt_init_mregion(&fmr->mr, pd, fmr_attr->max_pages,
- PERCPU_REF_INIT_ATOMIC);
- if (rval)
- goto bail;
-
- /*
- * ib_alloc_fmr() will initialize fmr->ibfmr except for lkey &
- * rkey.
- */
- rval = rvt_alloc_lkey(&fmr->mr, 0);
- if (rval)
- goto bail_mregion;
- fmr->ibfmr.rkey = fmr->mr.lkey;
- fmr->ibfmr.lkey = fmr->mr.lkey;
- /*
- * Resources are allocated but no valid mapping (RKEY can't be
- * used).
- */
- fmr->mr.access_flags = mr_access_flags;
- fmr->mr.max_segs = fmr_attr->max_pages;
- fmr->mr.page_shift = fmr_attr->page_shift;
-
- ret = &fmr->ibfmr;
-done:
- return ret;
-
-bail_mregion:
- rvt_deinit_mregion(&fmr->mr);
-bail:
- kfree(fmr);
- ret = ERR_PTR(rval);
- goto done;
-}
-
-/**
- * rvt_map_phys_fmr - set up a fast memory region
- * @ibfmr: the fast memory region to set up
- * @page_list: the list of pages to associate with the fast memory region
- * @list_len: the number of pages to associate with the fast memory region
- * @iova: the virtual address of the start of the fast memory region
- *
- * This may be called from interrupt context.
- *
- * Return: 0 on success
- */
-
-int rvt_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
- int list_len, u64 iova)
-{
- struct rvt_fmr *fmr = to_ifmr(ibfmr);
- struct rvt_lkey_table *rkt;
- unsigned long flags;
- int m, n;
- unsigned long i;
- u32 ps;
- struct rvt_dev_info *rdi = ib_to_rvt(ibfmr->device);
-
- i = atomic_long_read(&fmr->mr.refcount.count);
- if (i > 2)
- return -EBUSY;
-
- if (list_len > fmr->mr.max_segs)
- return -EINVAL;
-
- rkt = &rdi->lkey_table;
- spin_lock_irqsave(&rkt->lock, flags);
- fmr->mr.user_base = iova;
- fmr->mr.iova = iova;
- ps = 1 << fmr->mr.page_shift;
- fmr->mr.length = list_len * ps;
- m = 0;
- n = 0;
- for (i = 0; i < list_len; i++) {
- fmr->mr.map[m]->segs[n].vaddr = (void *)page_list[i];
- fmr->mr.map[m]->segs[n].length = ps;
- trace_rvt_mr_fmr_seg(&fmr->mr, m, n, (void *)page_list[i], ps);
- if (++n == RVT_SEGSZ) {
- m++;
- n = 0;
- }
- }
- spin_unlock_irqrestore(&rkt->lock, flags);
- return 0;
-}
-
-/**
- * rvt_unmap_fmr - unmap fast memory regions
- * @fmr_list: the list of fast memory regions to unmap
- *
- * Return: 0 on success.
- */
-int rvt_unmap_fmr(struct list_head *fmr_list)
-{
- struct rvt_fmr *fmr;
- struct rvt_lkey_table *rkt;
- unsigned long flags;
- struct rvt_dev_info *rdi;
-
- list_for_each_entry(fmr, fmr_list, ibfmr.list) {
- rdi = ib_to_rvt(fmr->ibfmr.device);
- rkt = &rdi->lkey_table;
- spin_lock_irqsave(&rkt->lock, flags);
- fmr->mr.user_base = 0;
- fmr->mr.iova = 0;
- fmr->mr.length = 0;
- spin_unlock_irqrestore(&rkt->lock, flags);
- }
- return 0;
-}
-
-/**
- * rvt_dealloc_fmr - deallocate a fast memory region
- * @ibfmr: the fast memory region to deallocate
- *
- * Return: 0 on success.
- */
-int rvt_dealloc_fmr(struct ib_fmr *ibfmr)
-{
- struct rvt_fmr *fmr = to_ifmr(ibfmr);
- int ret = 0;
-
- rvt_free_lkey(&fmr->mr);
- rvt_put_mr(&fmr->mr); /* will set completion if last */
- ret = rvt_check_refs(&fmr->mr, __func__);
- if (ret)
- goto out;
- rvt_deinit_mregion(&fmr->mr);
- kfree(fmr);
-out:
- return ret;
-}
-
/**
* rvt_sge_adjacent - is isge compressible
* @last_sge: last outgoing SGE written
diff --git a/drivers/infiniband/sw/rdmavt/mr.h b/drivers/infiniband/sw/rdmavt/mr.h
index 2c8d0752e8e34a..780fc63af98b75 100644
--- a/drivers/infiniband/sw/rdmavt/mr.h
+++ b/drivers/infiniband/sw/rdmavt/mr.h
@@ -49,10 +49,6 @@
*/
#include <rdma/rdma_vt.h>
-struct rvt_fmr {
- struct ib_fmr ibfmr;
- struct rvt_mregion mr; /* must be last */
-};
struct rvt_mr {
struct ib_mr ibmr;
@@ -60,11 +56,6 @@ struct rvt_mr {
struct rvt_mregion mr; /* must be last */
};
-static inline struct rvt_fmr *to_ifmr(struct ib_fmr *ibfmr)
-{
- return container_of(ibfmr, struct rvt_fmr, ibfmr);
-}
-
static inline struct rvt_mr *to_imr(struct ib_mr *ibmr)
{
return container_of(ibmr, struct rvt_mr, ibmr);
@@ -83,11 +74,5 @@ struct ib_mr *rvt_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
u32 max_num_sg, struct ib_udata *udata);
int rvt_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
int sg_nents, unsigned int *sg_offset);
-struct ib_fmr *rvt_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
- struct ib_fmr_attr *fmr_attr);
-int rvt_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
- int list_len, u64 iova);
-int rvt_unmap_fmr(struct list_head *fmr_list);
-int rvt_dealloc_fmr(struct ib_fmr *ibfmr);
#endif /* DEF_RVTMR_H */
diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c
index 72b031ab7092d8..f904bb34477ae7 100644
--- a/drivers/infiniband/sw/rdmavt/vt.c
+++ b/drivers/infiniband/sw/rdmavt/vt.c
@@ -378,7 +378,6 @@ enum {
static const struct ib_device_ops rvt_dev_ops = {
.uverbs_abi_ver = RVT_UVERBS_ABI_VERSION,
- .alloc_fmr = rvt_alloc_fmr,
.alloc_mr = rvt_alloc_mr,
.alloc_pd = rvt_alloc_pd,
.alloc_ucontext = rvt_alloc_ucontext,
@@ -387,7 +386,6 @@ static const struct ib_device_ops rvt_dev_ops = {
.create_cq = rvt_create_cq,
.create_qp = rvt_create_qp,
.create_srq = rvt_create_srq,
- .dealloc_fmr = rvt_dealloc_fmr,
.dealloc_pd = rvt_dealloc_pd,
.dealloc_ucontext = rvt_dealloc_ucontext,
.dereg_mr = rvt_dereg_mr,
@@ -399,7 +397,6 @@ static const struct ib_device_ops rvt_dev_ops = {
.get_dma_mr = rvt_get_dma_mr,
.get_port_immutable = rvt_get_port_immutable,
.map_mr_sg = rvt_map_mr_sg,
- .map_phys_fmr = rvt_map_phys_fmr,
.mmap = rvt_mmap,
.modify_ah = rvt_modify_ah,
.modify_device = rvt_modify_device,
@@ -420,7 +417,6 @@ static const struct ib_device_ops rvt_dev_ops = {
.reg_user_mr = rvt_reg_user_mr,
.req_notify_cq = rvt_req_notify_cq,
.resize_cq = rvt_resize_cq,
- .unmap_fmr = rvt_unmap_fmr,
INIT_RDMA_OBJ_SIZE(ib_ah, rvt_ah, ibah),
INIT_RDMA_OBJ_SIZE(ib_cq, rvt_cq, ibcq),
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH v3 11/13] RDMA/core: Remove FMR device ops
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
` (9 preceding siblings ...)
2020-05-28 19:45 ` [PATCH v3 10/13] RDMA/rdmavt: Remove FMR " Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-28 19:45 ` [PATCH v3 12/13] RDMA: Remove 'max_fmr' Jason Gunthorpe
` (2 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev; +Cc: Max Gurtovoy, oren, shlomin, vladimirk
From: Max Gurtovoy <maxg@mellanox.com>
After removing FMR support from all the RDMA ULPs and providers, there
is no need to keep FMR operation for IB devices.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---
Documentation/infiniband/core_locking.rst | 2 -
drivers/infiniband/core/device.c | 4 --
drivers/infiniband/core/verbs.c | 48 ------------------
include/rdma/ib_verbs.h | 59 -----------------------
4 files changed, 113 deletions(-)
diff --git a/Documentation/infiniband/core_locking.rst b/Documentation/infiniband/core_locking.rst
index 8f76a8a5a38f01..efd5e7603014db 100644
--- a/Documentation/infiniband/core_locking.rst
+++ b/Documentation/infiniband/core_locking.rst
@@ -22,7 +22,6 @@ Sleeping and interrupt context
- post_recv
- poll_cq
- req_notify_cq
- - map_phys_fmr
which may not sleep and must be callable from any context.
@@ -36,7 +35,6 @@ Sleeping and interrupt context
- ib_post_send
- ib_post_recv
- ib_req_notify_cq
- - ib_map_phys_fmr
are therefore safe to call from any context.
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index d9f565a779dfda..96d4d8295e97d7 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -2569,7 +2569,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
SET_DEVICE_OP(dev_ops, add_gid);
SET_DEVICE_OP(dev_ops, advise_mr);
SET_DEVICE_OP(dev_ops, alloc_dm);
- SET_DEVICE_OP(dev_ops, alloc_fmr);
SET_DEVICE_OP(dev_ops, alloc_hw_stats);
SET_DEVICE_OP(dev_ops, alloc_mr);
SET_DEVICE_OP(dev_ops, alloc_mr_integrity);
@@ -2596,7 +2595,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
SET_DEVICE_OP(dev_ops, create_wq);
SET_DEVICE_OP(dev_ops, dealloc_dm);
SET_DEVICE_OP(dev_ops, dealloc_driver);
- SET_DEVICE_OP(dev_ops, dealloc_fmr);
SET_DEVICE_OP(dev_ops, dealloc_mw);
SET_DEVICE_OP(dev_ops, dealloc_pd);
SET_DEVICE_OP(dev_ops, dealloc_ucontext);
@@ -2640,7 +2638,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
SET_DEVICE_OP(dev_ops, iw_rem_ref);
SET_DEVICE_OP(dev_ops, map_mr_sg);
SET_DEVICE_OP(dev_ops, map_mr_sg_pi);
- SET_DEVICE_OP(dev_ops, map_phys_fmr);
SET_DEVICE_OP(dev_ops, mmap);
SET_DEVICE_OP(dev_ops, mmap_free);
SET_DEVICE_OP(dev_ops, modify_ah);
@@ -2674,7 +2671,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
SET_DEVICE_OP(dev_ops, resize_cq);
SET_DEVICE_OP(dev_ops, set_vf_guid);
SET_DEVICE_OP(dev_ops, set_vf_link_state);
- SET_DEVICE_OP(dev_ops, unmap_fmr);
SET_OBJ_SIZE(dev_ops, ib_ah);
SET_OBJ_SIZE(dev_ops, ib_cq);
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index e2c9430a3ff1f3..1681eee2f7f3e8 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -2203,54 +2203,6 @@ struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd,
}
EXPORT_SYMBOL(ib_alloc_mr_integrity);
-/* "Fast" memory regions */
-
-struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
- int mr_access_flags,
- struct ib_fmr_attr *fmr_attr)
-{
- struct ib_fmr *fmr;
-
- if (!pd->device->ops.alloc_fmr)
- return ERR_PTR(-EOPNOTSUPP);
-
- fmr = pd->device->ops.alloc_fmr(pd, mr_access_flags, fmr_attr);
- if (!IS_ERR(fmr)) {
- fmr->device = pd->device;
- fmr->pd = pd;
- atomic_inc(&pd->usecnt);
- }
-
- return fmr;
-}
-EXPORT_SYMBOL(ib_alloc_fmr);
-
-int ib_unmap_fmr(struct list_head *fmr_list)
-{
- struct ib_fmr *fmr;
-
- if (list_empty(fmr_list))
- return 0;
-
- fmr = list_entry(fmr_list->next, struct ib_fmr, list);
- return fmr->device->ops.unmap_fmr(fmr_list);
-}
-EXPORT_SYMBOL(ib_unmap_fmr);
-
-int ib_dealloc_fmr(struct ib_fmr *fmr)
-{
- struct ib_pd *pd;
- int ret;
-
- pd = fmr->pd;
- ret = fmr->device->ops.dealloc_fmr(fmr);
- if (!ret)
- atomic_dec(&pd->usecnt);
-
- return ret;
-}
-EXPORT_SYMBOL(ib_dealloc_fmr);
-
/* Multicast groups */
static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid)
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 94533ae1669734..d275ca1e97b7d3 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1475,12 +1475,6 @@ enum ib_mr_rereg_flags {
IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
};
-struct ib_fmr_attr {
- int max_pages;
- int max_maps;
- u8 page_shift;
-};
-
struct ib_umem;
enum rdma_remove_reason {
@@ -1849,14 +1843,6 @@ struct ib_mw {
enum ib_mw_type type;
};
-struct ib_fmr {
- struct ib_device *device;
- struct ib_pd *pd;
- struct list_head list;
- u32 lkey;
- u32 rkey;
-};
-
/* Supported steering options */
enum ib_flow_attr_type {
/* steering according to rule specifications */
@@ -2499,12 +2485,6 @@ struct ib_device_ops {
struct ib_mw *(*alloc_mw)(struct ib_pd *pd, enum ib_mw_type type,
struct ib_udata *udata);
int (*dealloc_mw)(struct ib_mw *mw);
- struct ib_fmr *(*alloc_fmr)(struct ib_pd *pd, int mr_access_flags,
- struct ib_fmr_attr *fmr_attr);
- int (*map_phys_fmr)(struct ib_fmr *fmr, u64 *page_list, int list_len,
- u64 iova);
- int (*unmap_fmr)(struct list_head *fmr_list);
- int (*dealloc_fmr)(struct ib_fmr *fmr);
int (*attach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
int (*detach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
struct ib_xrcd *(*alloc_xrcd)(struct ib_device *device,
@@ -4301,45 +4281,6 @@ static inline u32 ib_inc_rkey(u32 rkey)
return ((rkey + 1) & mask) | (rkey & ~mask);
}
-/**
- * ib_alloc_fmr - Allocates a unmapped fast memory region.
- * @pd: The protection domain associated with the unmapped region.
- * @mr_access_flags: Specifies the memory access rights.
- * @fmr_attr: Attributes of the unmapped region.
- *
- * A fast memory region must be mapped before it can be used as part of
- * a work request.
- */
-struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
- int mr_access_flags,
- struct ib_fmr_attr *fmr_attr);
-
-/**
- * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
- * @fmr: The fast memory region to associate with the pages.
- * @page_list: An array of physical pages to map to the fast memory region.
- * @list_len: The number of pages in page_list.
- * @iova: The I/O virtual address to use with the mapped region.
- */
-static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
- u64 *page_list, int list_len,
- u64 iova)
-{
- return fmr->device->ops.map_phys_fmr(fmr, page_list, list_len, iova);
-}
-
-/**
- * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
- * @fmr_list: A linked list of fast memory regions to unmap.
- */
-int ib_unmap_fmr(struct list_head *fmr_list);
-
-/**
- * ib_dealloc_fmr - Deallocates a fast memory region.
- * @fmr: The fast memory region to deallocate.
- */
-int ib_dealloc_fmr(struct ib_fmr *fmr);
-
/**
* ib_attach_mcast - Attaches the specified QP to a multicast group.
* @qp: QP to attach to the multicast group. The QP must be type
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* [PATCH v3 12/13] RDMA: Remove 'max_fmr'
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
` (10 preceding siblings ...)
2020-05-28 19:45 ` [PATCH v3 11/13] RDMA/core: Remove FMR device ops Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-29 14:54 ` Bernard Metzler
2020-05-28 19:45 ` [PATCH v3 13/13] RDMA: Remove 'max_map_per_fmr' Jason Gunthorpe
2020-05-29 19:17 ` [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
13 siblings, 1 reply; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev
Cc: Ariel Elior, Bernard Metzler, Dennis Dalessandro, Devesh Sharma,
Max Gurtovoy, Mike Marciniszyn, Michal Kalderon, oren,
Selvin Xavier, shlomin, vladimirk
From: Jason Gunthorpe <jgg@mellanox.com>
Now that FMR support is gone, this attribute can be deleted from all
places.
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Cc: Bernard Metzler <bmt@zurich.ibm.com>
Cc: Selvin Xavier <selvin.xavier@broadcom.com>
Cc: Devesh Sharma <devesh.sharma@broadcom.com>
Cc: Michal Kalderon <mkalderon@marvell.com>
Cc: Ariel Elior <aelior@marvell.com>
Cc: Dennis Dalessandro <dennis.dalessandro@intel.com>
Cc: Mike Marciniszyn <mike.marciniszyn@intel.com>
---
drivers/infiniband/core/uverbs_cmd.c | 1 -
drivers/infiniband/hw/ocrdma/ocrdma.h | 1 -
drivers/infiniband/hw/ocrdma/ocrdma_hw.c | 1 -
drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 1 -
drivers/infiniband/hw/qedr/main.c | 1 -
drivers/infiniband/hw/qedr/qedr.h | 1 -
drivers/infiniband/hw/qedr/verbs.c | 1 -
drivers/infiniband/sw/rdmavt/mr.c | 1 -
drivers/infiniband/sw/siw/siw.h | 2 --
drivers/infiniband/sw/siw/siw_main.c | 1 -
drivers/infiniband/sw/siw/siw_verbs.c | 1 -
drivers/net/ethernet/qlogic/qed/qed_rdma.c | 1 -
drivers/net/ethernet/qlogic/qed/qed_rdma.h | 1 -
include/linux/qed/qed_rdma_if.h | 1 -
include/rdma/ib_verbs.h | 1 -
net/rds/ib.c | 2 +-
16 files changed, 1 insertion(+), 17 deletions(-)
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 2067a939788bd5..56d207405dbd1c 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -356,7 +356,6 @@ static void copy_query_dev_fields(struct ib_ucontext *ucontext,
resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
resp->max_ah = attr->max_ah;
- resp->max_fmr = attr->max_fmr;
resp->max_map_per_fmr = attr->max_map_per_fmr;
resp->max_srq = attr->max_srq;
resp->max_srq_wr = attr->max_srq_wr;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma.h b/drivers/infiniband/hw/ocrdma/ocrdma.h
index 7baedc74e39d7e..fcfe0e82197a24 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma.h
@@ -98,7 +98,6 @@ struct ocrdma_dev_attr {
u64 max_mr_size;
u32 max_num_mr_pbl;
int max_mw;
- int max_fmr;
int max_map_per_fmr;
int max_pages_per_frmr;
u16 max_ord_per_qp;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
index d82d3ec3649ea0..e07bf0b2209a4c 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
@@ -1190,7 +1190,6 @@ static void ocrdma_get_attr(struct ocrdma_dev *dev,
attr->max_mr = rsp->max_mr;
attr->max_mr_size = ((u64)rsp->max_mr_size_hi << 32) |
rsp->max_mr_size_lo;
- attr->max_fmr = 0;
attr->max_pages_per_frmr = rsp->max_pages_per_frmr;
attr->max_num_mr_pbl = rsp->max_num_mr_pbl;
attr->max_cqe = rsp->max_cq_cqes_per_cq &
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index 10e34389459592..890e3fd41d2199 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -99,7 +99,6 @@ int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr,
attr->max_mw = dev->attr.max_mw;
attr->max_pd = dev->attr.max_pd;
attr->atomic_cap = 0;
- attr->max_fmr = 0;
attr->max_map_per_fmr = 0;
attr->max_qp_rd_atom =
min(dev->attr.max_ord_per_qp, dev->attr.max_ird_per_qp);
diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index dcdc85a1ab2540..ccaedfd53e49e2 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -632,7 +632,6 @@ static int qedr_set_device_attr(struct qedr_dev *dev)
attr->max_mr_size = qed_attr->max_mr_size;
attr->max_cqe = min_t(u64, qed_attr->max_cqe, QEDR_MAX_CQES);
attr->max_mw = qed_attr->max_mw;
- attr->max_fmr = qed_attr->max_fmr;
attr->max_mr_mw_fmr_pbl = qed_attr->max_mr_mw_fmr_pbl;
attr->max_mr_mw_fmr_size = qed_attr->max_mr_mw_fmr_size;
attr->max_pd = qed_attr->max_pd;
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index 5488dbd59d3c15..fdf90ecb26990f 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -103,7 +103,6 @@ struct qedr_device_attr {
u64 max_mr_size;
u32 max_cqe;
u32 max_mw;
- u32 max_fmr;
u32 max_mr_mw_fmr_pbl;
u64 max_mr_mw_fmr_size;
u32 max_pd;
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index d6b94a71357323..ca88006eaa667c 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -145,7 +145,6 @@ int qedr_query_device(struct ib_device *ibdev,
attr->max_mw = qattr->max_mw;
attr->max_pd = qattr->max_pd;
attr->atomic_cap = dev->atomic_cap;
- attr->max_fmr = qattr->max_fmr;
attr->max_map_per_fmr = 16;
attr->max_qp_init_rd_atom =
1 << (fls(qattr->max_qp_req_rd_atomic_resc) - 1);
diff --git a/drivers/infiniband/sw/rdmavt/mr.c b/drivers/infiniband/sw/rdmavt/mr.c
index ddb0c0d771c257..60864e5ca7cb67 100644
--- a/drivers/infiniband/sw/rdmavt/mr.c
+++ b/drivers/infiniband/sw/rdmavt/mr.c
@@ -97,7 +97,6 @@ int rvt_driver_mr_init(struct rvt_dev_info *rdi)
RCU_INIT_POINTER(rdi->lkey_table.table[i], NULL);
rdi->dparms.props.max_mr = rdi->lkey_table.max;
- rdi->dparms.props.max_fmr = rdi->lkey_table.max;
return 0;
}
diff --git a/drivers/infiniband/sw/siw/siw.h b/drivers/infiniband/sw/siw/siw.h
index 5a58a1cc7a7e84..e9753831ac3f33 100644
--- a/drivers/infiniband/sw/siw/siw.h
+++ b/drivers/infiniband/sw/siw/siw.h
@@ -30,7 +30,6 @@
#define SIW_MAX_MR (SIW_MAX_QP * 10)
#define SIW_MAX_PD SIW_MAX_QP
#define SIW_MAX_MW 0 /* to be set if MW's are supported */
-#define SIW_MAX_FMR SIW_MAX_MR
#define SIW_MAX_SRQ SIW_MAX_QP
#define SIW_MAX_SRQ_WR (SIW_MAX_QP_WR * 10)
#define SIW_MAX_CONTEXT SIW_MAX_PD
@@ -59,7 +58,6 @@ struct siw_dev_cap {
int max_mr;
int max_pd;
int max_mw;
- int max_fmr;
int max_srq;
int max_srq_wr;
int max_srq_sge;
diff --git a/drivers/infiniband/sw/siw/siw_main.c b/drivers/infiniband/sw/siw/siw_main.c
index 5cd40fb9e20ce5..a0b8cc643c5cfc 100644
--- a/drivers/infiniband/sw/siw/siw_main.c
+++ b/drivers/infiniband/sw/siw/siw_main.c
@@ -413,7 +413,6 @@ static struct siw_device *siw_device_create(struct net_device *netdev)
sdev->attrs.max_mr = SIW_MAX_MR;
sdev->attrs.max_pd = SIW_MAX_PD;
sdev->attrs.max_mw = SIW_MAX_MW;
- sdev->attrs.max_fmr = SIW_MAX_FMR;
sdev->attrs.max_srq = SIW_MAX_SRQ;
sdev->attrs.max_srq_wr = SIW_MAX_SRQ_WR;
sdev->attrs.max_srq_sge = SIW_MAX_SGE;
diff --git a/drivers/infiniband/sw/siw/siw_verbs.c b/drivers/infiniband/sw/siw/siw_verbs.c
index aeb842bc7a1ee9..987e2ba05dbc06 100644
--- a/drivers/infiniband/sw/siw/siw_verbs.c
+++ b/drivers/infiniband/sw/siw/siw_verbs.c
@@ -136,7 +136,6 @@ int siw_query_device(struct ib_device *base_dev, struct ib_device_attr *attr,
attr->max_cq = sdev->attrs.max_cq;
attr->max_cqe = sdev->attrs.max_cqe;
attr->max_fast_reg_page_list_len = SIW_MAX_SGE_PBL;
- attr->max_fmr = sdev->attrs.max_fmr;
attr->max_mr = sdev->attrs.max_mr;
attr->max_mw = sdev->attrs.max_mw;
attr->max_mr_size = ~0ull;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.c b/drivers/net/ethernet/qlogic/qed/qed_rdma.c
index 38b1f402f7ed29..5dc18a4bdda4a8 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_rdma.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.c
@@ -499,7 +499,6 @@ static void qed_rdma_init_devinfo(struct qed_hwfn *p_hwfn,
dev->max_cqe = QED_RDMA_MAX_CQE_16_BIT;
dev->max_mw = 0;
- dev->max_fmr = QED_RDMA_MAX_FMR;
dev->max_mr_mw_fmr_pbl = (PAGE_SIZE / 8) * (PAGE_SIZE / 8);
dev->max_mr_mw_fmr_size = dev->max_mr_mw_fmr_pbl * PAGE_SIZE;
dev->max_pkey = QED_RDMA_MAX_P_KEY;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.h b/drivers/net/ethernet/qlogic/qed/qed_rdma.h
index 3689fe3e593542..dfaa2f552627f7 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_rdma.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.h
@@ -45,7 +45,6 @@
#include "qed_iwarp.h"
#include "qed_roce.h"
-#define QED_RDMA_MAX_FMR (RDMA_MAX_TIDS)
#define QED_RDMA_MAX_P_KEY (1)
#define QED_RDMA_MAX_WQE (0x7FFF)
#define QED_RDMA_MAX_SRQ_WQE_ELEM (0x7FFF)
diff --git a/include/linux/qed/qed_rdma_if.h b/include/linux/qed/qed_rdma_if.h
index 74efca15fde7dd..c90276cda5c162 100644
--- a/include/linux/qed/qed_rdma_if.h
+++ b/include/linux/qed/qed_rdma_if.h
@@ -91,7 +91,6 @@ struct qed_rdma_device {
u64 max_mr_size;
u32 max_cqe;
u32 max_mw;
- u32 max_fmr;
u32 max_mr_mw_fmr_pbl;
u64 max_mr_mw_fmr_size;
u32 max_pd;
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index d275ca1e97b7d3..a84f91c2816add 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -430,7 +430,6 @@ struct ib_device_attr {
int max_mcast_qp_attach;
int max_total_mcast_qp_attach;
int max_ah;
- int max_fmr;
int max_map_per_fmr;
int max_srq;
int max_srq_wr;
diff --git a/net/rds/ib.c b/net/rds/ib.c
index 6c43b3e4c73618..deecbdcdae84ef 100644
--- a/net/rds/ib.c
+++ b/net/rds/ib.c
@@ -217,7 +217,7 @@ static int rds_ib_add_one(struct ib_device *device)
}
rdsdebug("RDS/IB: max_mr = %d, max_wrs = %d, max_sge = %d, max_1m_mrs = %d, max_8k_mrs = %d\n",
- device->attrs.max_fmr, rds_ibdev->max_wrs, rds_ibdev->max_sge,
+ device->attrs.max_mr, rds_ibdev->max_wrs, rds_ibdev->max_sge,
rds_ibdev->max_1m_mrs, rds_ibdev->max_8k_mrs);
pr_info("RDS/IB: %s: added\n", device->name);
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* Re: [PATCH v3 12/13] RDMA: Remove 'max_fmr'
2020-05-28 19:45 ` [PATCH v3 12/13] RDMA: Remove 'max_fmr' Jason Gunthorpe
@ 2020-05-29 14:54 ` Bernard Metzler
0 siblings, 0 replies; 20+ messages in thread
From: Bernard Metzler @ 2020-05-29 14:54 UTC (permalink / raw)
To: Jason Gunthorpe
Cc: linux-rdma, netdev, Ariel Elior, Dennis Dalessandro,
Devesh Sharma, Max Gurtovoy, Mike Marciniszyn, Michal Kalderon,
oren, Selvin Xavier, shlomin, vladimirk
-----"Jason Gunthorpe" <jgg@ziepe.ca> wrote: -----
>To: linux-rdma@vger.kernel.org, netdev@vger.kernel.org
>From: "Jason Gunthorpe" <jgg@ziepe.ca>
>Date: 05/28/2020 09:46PM
>Cc: "Ariel Elior" <aelior@marvell.com>, "Bernard Metzler"
><bmt@zurich.ibm.com>, "Dennis Dalessandro"
><dennis.dalessandro@intel.com>, "Devesh Sharma"
><devesh.sharma@broadcom.com>, "Max Gurtovoy" <maxg@mellanox.com>,
>"Mike Marciniszyn" <mike.marciniszyn@intel.com>, "Michal Kalderon"
><mkalderon@marvell.com>, oren@mellanox.com, "Selvin Xavier"
><selvin.xavier@broadcom.com>, shlomin@mellanox.com,
>vladimirk@mellanox.com
>Subject: [EXTERNAL] [PATCH v3 12/13] RDMA: Remove 'max_fmr'
>
>From: Jason Gunthorpe <jgg@mellanox.com>
>
>Now that FMR support is gone, this attribute can be deleted from all
>places.
>
>Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
>Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
>Cc: Bernard Metzler <bmt@zurich.ibm.com>
>Cc: Selvin Xavier <selvin.xavier@broadcom.com>
>Cc: Devesh Sharma <devesh.sharma@broadcom.com>
>Cc: Michal Kalderon <mkalderon@marvell.com>
>Cc: Ariel Elior <aelior@marvell.com>
>Cc: Dennis Dalessandro <dennis.dalessandro@intel.com>
>Cc: Mike Marciniszyn <mike.marciniszyn@intel.com>
>---
> drivers/infiniband/core/uverbs_cmd.c | 1 -
> drivers/infiniband/hw/ocrdma/ocrdma.h | 1 -
> drivers/infiniband/hw/ocrdma/ocrdma_hw.c | 1 -
> drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 1 -
> drivers/infiniband/hw/qedr/main.c | 1 -
> drivers/infiniband/hw/qedr/qedr.h | 1 -
> drivers/infiniband/hw/qedr/verbs.c | 1 -
> drivers/infiniband/sw/rdmavt/mr.c | 1 -
> drivers/infiniband/sw/siw/siw.h | 2 --
> drivers/infiniband/sw/siw/siw_main.c | 1 -
> drivers/infiniband/sw/siw/siw_verbs.c | 1 -
> drivers/net/ethernet/qlogic/qed/qed_rdma.c | 1 -
> drivers/net/ethernet/qlogic/qed/qed_rdma.h | 1 -
> include/linux/qed/qed_rdma_if.h | 1 -
> include/rdma/ib_verbs.h | 1 -
> net/rds/ib.c | 2 +-
> 16 files changed, 1 insertion(+), 17 deletions(-)
>
>diff --git a/drivers/infiniband/core/uverbs_cmd.c
>b/drivers/infiniband/core/uverbs_cmd.c
>index 2067a939788bd5..56d207405dbd1c 100644
>--- a/drivers/infiniband/core/uverbs_cmd.c
>+++ b/drivers/infiniband/core/uverbs_cmd.c
>@@ -356,7 +356,6 @@ static void copy_query_dev_fields(struct
>ib_ucontext *ucontext,
> resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
> resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
> resp->max_ah = attr->max_ah;
>- resp->max_fmr = attr->max_fmr;
> resp->max_map_per_fmr = attr->max_map_per_fmr;
> resp->max_srq = attr->max_srq;
> resp->max_srq_wr = attr->max_srq_wr;
>diff --git a/drivers/infiniband/hw/ocrdma/ocrdma.h
>b/drivers/infiniband/hw/ocrdma/ocrdma.h
>index 7baedc74e39d7e..fcfe0e82197a24 100644
>--- a/drivers/infiniband/hw/ocrdma/ocrdma.h
>+++ b/drivers/infiniband/hw/ocrdma/ocrdma.h
>@@ -98,7 +98,6 @@ struct ocrdma_dev_attr {
> u64 max_mr_size;
> u32 max_num_mr_pbl;
> int max_mw;
>- int max_fmr;
> int max_map_per_fmr;
> int max_pages_per_frmr;
> u16 max_ord_per_qp;
>diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
>b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
>index d82d3ec3649ea0..e07bf0b2209a4c 100644
>--- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
>+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
>@@ -1190,7 +1190,6 @@ static void ocrdma_get_attr(struct ocrdma_dev
>*dev,
> attr->max_mr = rsp->max_mr;
> attr->max_mr_size = ((u64)rsp->max_mr_size_hi << 32) |
> rsp->max_mr_size_lo;
>- attr->max_fmr = 0;
> attr->max_pages_per_frmr = rsp->max_pages_per_frmr;
> attr->max_num_mr_pbl = rsp->max_num_mr_pbl;
> attr->max_cqe = rsp->max_cq_cqes_per_cq &
>diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
>b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
>index 10e34389459592..890e3fd41d2199 100644
>--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
>+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
>@@ -99,7 +99,6 @@ int ocrdma_query_device(struct ib_device *ibdev,
>struct ib_device_attr *attr,
> attr->max_mw = dev->attr.max_mw;
> attr->max_pd = dev->attr.max_pd;
> attr->atomic_cap = 0;
>- attr->max_fmr = 0;
> attr->max_map_per_fmr = 0;
> attr->max_qp_rd_atom =
> min(dev->attr.max_ord_per_qp, dev->attr.max_ird_per_qp);
>diff --git a/drivers/infiniband/hw/qedr/main.c
>b/drivers/infiniband/hw/qedr/main.c
>index dcdc85a1ab2540..ccaedfd53e49e2 100644
>--- a/drivers/infiniband/hw/qedr/main.c
>+++ b/drivers/infiniband/hw/qedr/main.c
>@@ -632,7 +632,6 @@ static int qedr_set_device_attr(struct qedr_dev
>*dev)
> attr->max_mr_size = qed_attr->max_mr_size;
> attr->max_cqe = min_t(u64, qed_attr->max_cqe, QEDR_MAX_CQES);
> attr->max_mw = qed_attr->max_mw;
>- attr->max_fmr = qed_attr->max_fmr;
> attr->max_mr_mw_fmr_pbl = qed_attr->max_mr_mw_fmr_pbl;
> attr->max_mr_mw_fmr_size = qed_attr->max_mr_mw_fmr_size;
> attr->max_pd = qed_attr->max_pd;
>diff --git a/drivers/infiniband/hw/qedr/qedr.h
>b/drivers/infiniband/hw/qedr/qedr.h
>index 5488dbd59d3c15..fdf90ecb26990f 100644
>--- a/drivers/infiniband/hw/qedr/qedr.h
>+++ b/drivers/infiniband/hw/qedr/qedr.h
>@@ -103,7 +103,6 @@ struct qedr_device_attr {
> u64 max_mr_size;
> u32 max_cqe;
> u32 max_mw;
>- u32 max_fmr;
> u32 max_mr_mw_fmr_pbl;
> u64 max_mr_mw_fmr_size;
> u32 max_pd;
>diff --git a/drivers/infiniband/hw/qedr/verbs.c
>b/drivers/infiniband/hw/qedr/verbs.c
>index d6b94a71357323..ca88006eaa667c 100644
>--- a/drivers/infiniband/hw/qedr/verbs.c
>+++ b/drivers/infiniband/hw/qedr/verbs.c
>@@ -145,7 +145,6 @@ int qedr_query_device(struct ib_device *ibdev,
> attr->max_mw = qattr->max_mw;
> attr->max_pd = qattr->max_pd;
> attr->atomic_cap = dev->atomic_cap;
>- attr->max_fmr = qattr->max_fmr;
> attr->max_map_per_fmr = 16;
> attr->max_qp_init_rd_atom =
> 1 << (fls(qattr->max_qp_req_rd_atomic_resc) - 1);
>diff --git a/drivers/infiniband/sw/rdmavt/mr.c
>b/drivers/infiniband/sw/rdmavt/mr.c
>index ddb0c0d771c257..60864e5ca7cb67 100644
>--- a/drivers/infiniband/sw/rdmavt/mr.c
>+++ b/drivers/infiniband/sw/rdmavt/mr.c
>@@ -97,7 +97,6 @@ int rvt_driver_mr_init(struct rvt_dev_info *rdi)
> RCU_INIT_POINTER(rdi->lkey_table.table[i], NULL);
>
> rdi->dparms.props.max_mr = rdi->lkey_table.max;
>- rdi->dparms.props.max_fmr = rdi->lkey_table.max;
> return 0;
> }
>
>diff --git a/drivers/infiniband/sw/siw/siw.h
>b/drivers/infiniband/sw/siw/siw.h
>index 5a58a1cc7a7e84..e9753831ac3f33 100644
>--- a/drivers/infiniband/sw/siw/siw.h
>+++ b/drivers/infiniband/sw/siw/siw.h
>@@ -30,7 +30,6 @@
> #define SIW_MAX_MR (SIW_MAX_QP * 10)
> #define SIW_MAX_PD SIW_MAX_QP
> #define SIW_MAX_MW 0 /* to be set if MW's are supported */
>-#define SIW_MAX_FMR SIW_MAX_MR
> #define SIW_MAX_SRQ SIW_MAX_QP
> #define SIW_MAX_SRQ_WR (SIW_MAX_QP_WR * 10)
> #define SIW_MAX_CONTEXT SIW_MAX_PD
>@@ -59,7 +58,6 @@ struct siw_dev_cap {
> int max_mr;
> int max_pd;
> int max_mw;
>- int max_fmr;
> int max_srq;
> int max_srq_wr;
> int max_srq_sge;
>diff --git a/drivers/infiniband/sw/siw/siw_main.c
>b/drivers/infiniband/sw/siw/siw_main.c
>index 5cd40fb9e20ce5..a0b8cc643c5cfc 100644
>--- a/drivers/infiniband/sw/siw/siw_main.c
>+++ b/drivers/infiniband/sw/siw/siw_main.c
>@@ -413,7 +413,6 @@ static struct siw_device
>*siw_device_create(struct net_device *netdev)
> sdev->attrs.max_mr = SIW_MAX_MR;
> sdev->attrs.max_pd = SIW_MAX_PD;
> sdev->attrs.max_mw = SIW_MAX_MW;
>- sdev->attrs.max_fmr = SIW_MAX_FMR;
> sdev->attrs.max_srq = SIW_MAX_SRQ;
> sdev->attrs.max_srq_wr = SIW_MAX_SRQ_WR;
> sdev->attrs.max_srq_sge = SIW_MAX_SGE;
>diff --git a/drivers/infiniband/sw/siw/siw_verbs.c
>b/drivers/infiniband/sw/siw/siw_verbs.c
>index aeb842bc7a1ee9..987e2ba05dbc06 100644
>--- a/drivers/infiniband/sw/siw/siw_verbs.c
>+++ b/drivers/infiniband/sw/siw/siw_verbs.c
>@@ -136,7 +136,6 @@ int siw_query_device(struct ib_device *base_dev,
>struct ib_device_attr *attr,
> attr->max_cq = sdev->attrs.max_cq;
> attr->max_cqe = sdev->attrs.max_cqe;
> attr->max_fast_reg_page_list_len = SIW_MAX_SGE_PBL;
>- attr->max_fmr = sdev->attrs.max_fmr;
> attr->max_mr = sdev->attrs.max_mr;
> attr->max_mw = sdev->attrs.max_mw;
> attr->max_mr_size = ~0ull;
>diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.c
>b/drivers/net/ethernet/qlogic/qed/qed_rdma.c
>index 38b1f402f7ed29..5dc18a4bdda4a8 100644
>--- a/drivers/net/ethernet/qlogic/qed/qed_rdma.c
>+++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.c
>@@ -499,7 +499,6 @@ static void qed_rdma_init_devinfo(struct qed_hwfn
>*p_hwfn,
> dev->max_cqe = QED_RDMA_MAX_CQE_16_BIT;
>
> dev->max_mw = 0;
>- dev->max_fmr = QED_RDMA_MAX_FMR;
> dev->max_mr_mw_fmr_pbl = (PAGE_SIZE / 8) * (PAGE_SIZE / 8);
> dev->max_mr_mw_fmr_size = dev->max_mr_mw_fmr_pbl * PAGE_SIZE;
> dev->max_pkey = QED_RDMA_MAX_P_KEY;
>diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.h
>b/drivers/net/ethernet/qlogic/qed/qed_rdma.h
>index 3689fe3e593542..dfaa2f552627f7 100644
>--- a/drivers/net/ethernet/qlogic/qed/qed_rdma.h
>+++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.h
>@@ -45,7 +45,6 @@
> #include "qed_iwarp.h"
> #include "qed_roce.h"
>
>-#define QED_RDMA_MAX_FMR (RDMA_MAX_TIDS)
> #define QED_RDMA_MAX_P_KEY (1)
> #define QED_RDMA_MAX_WQE (0x7FFF)
> #define QED_RDMA_MAX_SRQ_WQE_ELEM (0x7FFF)
>diff --git a/include/linux/qed/qed_rdma_if.h
>b/include/linux/qed/qed_rdma_if.h
>index 74efca15fde7dd..c90276cda5c162 100644
>--- a/include/linux/qed/qed_rdma_if.h
>+++ b/include/linux/qed/qed_rdma_if.h
>@@ -91,7 +91,6 @@ struct qed_rdma_device {
> u64 max_mr_size;
> u32 max_cqe;
> u32 max_mw;
>- u32 max_fmr;
> u32 max_mr_mw_fmr_pbl;
> u64 max_mr_mw_fmr_size;
> u32 max_pd;
>diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
>index d275ca1e97b7d3..a84f91c2816add 100644
>--- a/include/rdma/ib_verbs.h
>+++ b/include/rdma/ib_verbs.h
>@@ -430,7 +430,6 @@ struct ib_device_attr {
> int max_mcast_qp_attach;
> int max_total_mcast_qp_attach;
> int max_ah;
>- int max_fmr;
> int max_map_per_fmr;
> int max_srq;
> int max_srq_wr;
>diff --git a/net/rds/ib.c b/net/rds/ib.c
>index 6c43b3e4c73618..deecbdcdae84ef 100644
>--- a/net/rds/ib.c
>+++ b/net/rds/ib.c
>@@ -217,7 +217,7 @@ static int rds_ib_add_one(struct ib_device
>*device)
> }
>
> rdsdebug("RDS/IB: max_mr = %d, max_wrs = %d, max_sge = %d,
>max_1m_mrs = %d, max_8k_mrs = %d\n",
>- device->attrs.max_fmr, rds_ibdev->max_wrs, rds_ibdev->max_sge,
>+ device->attrs.max_mr, rds_ibdev->max_wrs, rds_ibdev->max_sge,
> rds_ibdev->max_1m_mrs, rds_ibdev->max_8k_mrs);
>
> pr_info("RDS/IB: %s: added\n", device->name);
>--
>2.26.2
>
>
Thank you, Jason.
Regarding the siw driver part of it, this looks good.
siw never implemented the 'classical' fast memory registration,
but only supporting the more recent FRWR way, which stays intact.
With that, we remove only the leftovers of a never implemented
functionality. So, for siw there is nothing to test.
Reviewed-by: Bernard Metzler <bmt@zurich.ibm.com>
^ permalink raw reply [flat|nested] 20+ messages in thread
* [PATCH v3 13/13] RDMA: Remove 'max_map_per_fmr'
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
` (11 preceding siblings ...)
2020-05-28 19:45 ` [PATCH v3 12/13] RDMA: Remove 'max_fmr' Jason Gunthorpe
@ 2020-05-28 19:45 ` Jason Gunthorpe
2020-05-29 19:17 ` [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
13 siblings, 0 replies; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-28 19:45 UTC (permalink / raw)
To: linux-rdma, netdev
Cc: Dennis Dalessandro, Devesh Sharma, Faisal Latif, Leon Romanovsky,
Max Gurtovoy, Mike Marciniszyn, Michal Kalderon, oren,
Selvin Xavier, Shiraz Saleem, shlomin, vladimirk
From: Jason Gunthorpe <jgg@mellanox.com>
Now that FMR support is gone, this attribute can be deleted from all
places.
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Cc: Dennis Dalessandro <dennis.dalessandro@intel.com>
Cc: Mike Marciniszyn <mike.marciniszyn@intel.com>
Cc: Faisal Latif <faisal.latif@intel.com>
Cc: Shiraz Saleem <shiraz.saleem@intel.com>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Selvin Xavier <selvin.xavier@broadcom.com>
Cc: Devesh Sharma <devesh.sharma@broadcom.com>
Cc: Michal Kalderon <mkalderon@marvell.com>
---
drivers/infiniband/core/uverbs_cmd.c | 1 -
drivers/infiniband/hw/hfi1/verbs.c | 1 -
drivers/infiniband/hw/i40iw/i40iw_verbs.c | 1 -
drivers/infiniband/hw/mlx5/main.c | 1 -
drivers/infiniband/hw/mthca/mthca_provider.c | 10 ----------
drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 1 -
drivers/infiniband/hw/qedr/verbs.c | 1 -
drivers/infiniband/hw/qib/qib_verbs.c | 1 -
drivers/infiniband/hw/usnic/usnic_ib_verbs.c | 1 -
include/rdma/ib_verbs.h | 1 -
10 files changed, 19 deletions(-)
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 56d207405dbd1c..b48b3f6e632d46 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -356,7 +356,6 @@ static void copy_query_dev_fields(struct ib_ucontext *ucontext,
resp->max_mcast_qp_attach = attr->max_mcast_qp_attach;
resp->max_total_mcast_qp_attach = attr->max_total_mcast_qp_attach;
resp->max_ah = attr->max_ah;
- resp->max_map_per_fmr = attr->max_map_per_fmr;
resp->max_srq = attr->max_srq;
resp->max_srq_wr = attr->max_srq_wr;
resp->max_srq_sge = attr->max_srq_sge;
diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c
index 43ddced15951b7..30865635b44991 100644
--- a/drivers/infiniband/hw/hfi1/verbs.c
+++ b/drivers/infiniband/hw/hfi1/verbs.c
@@ -1361,7 +1361,6 @@ static void hfi1_fill_device_attr(struct hfi1_devdata *dd)
rdi->dparms.props.max_cq = hfi1_max_cqs;
rdi->dparms.props.max_ah = hfi1_max_ahs;
rdi->dparms.props.max_cqe = hfi1_max_cqes;
- rdi->dparms.props.max_map_per_fmr = 32767;
rdi->dparms.props.max_pd = hfi1_max_pds;
rdi->dparms.props.max_qp_rd_atom = HFI1_MAX_RDMA_ATOMIC;
rdi->dparms.props.max_qp_init_rd_atom = 255;
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
index 1b6fb13809619d..19af29a48c5593 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
@@ -83,7 +83,6 @@ static int i40iw_query_device(struct ib_device *ibdev,
props->max_qp_rd_atom = I40IW_MAX_IRD_SIZE;
props->max_qp_init_rd_atom = props->max_qp_rd_atom;
props->atomic_cap = IB_ATOMIC_NONE;
- props->max_map_per_fmr = 1;
props->max_fast_reg_page_list_len = I40IW_MAX_PAGES_PER_FMR;
return 0;
}
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 6557c83391614c..d5b3cffd5a8409 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -999,7 +999,6 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
props->max_mcast_qp_attach = MLX5_CAP_GEN(mdev, max_qp_mcg);
props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
props->max_mcast_grp;
- props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
props->max_ah = INT_MAX;
props->hca_core_clock = MLX5_CAP_GEN(mdev, device_frequency_khz);
props->timestamp_mask = 0x7FFFFFFFFFFFFFFFULL;
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index de2124a8ee2be6..9fa2f9164a47b6 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -118,16 +118,6 @@ static int mthca_query_device(struct ib_device *ibdev, struct ib_device_attr *pr
props->max_mcast_qp_attach = MTHCA_QP_PER_MGM;
props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
props->max_mcast_grp;
- /*
- * If Sinai memory key optimization is being used, then only
- * the 8-bit key portion will change. For other HCAs, the
- * unused index bits will also be used for FMR remapping.
- */
- if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
- props->max_map_per_fmr = 255;
- else
- props->max_map_per_fmr =
- (1 << (32 - ilog2(mdev->limits.num_mpts))) - 1;
err = 0;
out:
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index 890e3fd41d2199..d11c74390a1242 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -99,7 +99,6 @@ int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr,
attr->max_mw = dev->attr.max_mw;
attr->max_pd = dev->attr.max_pd;
attr->atomic_cap = 0;
- attr->max_map_per_fmr = 0;
attr->max_qp_rd_atom =
min(dev->attr.max_ord_per_qp, dev->attr.max_ird_per_qp);
attr->max_qp_init_rd_atom = dev->attr.max_ord_per_qp;
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index ca88006eaa667c..9b9e802663674c 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -145,7 +145,6 @@ int qedr_query_device(struct ib_device *ibdev,
attr->max_mw = qattr->max_mw;
attr->max_pd = qattr->max_pd;
attr->atomic_cap = dev->atomic_cap;
- attr->max_map_per_fmr = 16;
attr->max_qp_init_rd_atom =
1 << (fls(qattr->max_qp_req_rd_atomic_resc) - 1);
attr->max_qp_rd_atom =
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index 7508abb6a0fa1e..7acf9ba5358a41 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -1460,7 +1460,6 @@ static void qib_fill_device_attr(struct qib_devdata *dd)
rdi->dparms.props.max_cq = ib_qib_max_cqs;
rdi->dparms.props.max_cqe = ib_qib_max_cqes;
rdi->dparms.props.max_ah = ib_qib_max_ahs;
- rdi->dparms.props.max_map_per_fmr = 32767;
rdi->dparms.props.max_qp_rd_atom = QIB_MAX_RDMA_ATOMIC;
rdi->dparms.props.max_qp_init_rd_atom = 255;
rdi->dparms.props.max_srq = ib_qib_max_srqs;
diff --git a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
index 71f82339446c29..b8a77ce1159086 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
@@ -322,7 +322,6 @@ int usnic_ib_query_device(struct ib_device *ibdev,
props->max_mcast_grp = 0;
props->max_mcast_qp_attach = 0;
props->max_total_mcast_qp_attach = 0;
- props->max_map_per_fmr = 0;
/* Owned by Userspace
* max_qp_wr, max_sge, max_sge_rd, max_cqe */
mutex_unlock(&us_ibdev->usdev_lock);
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index a84f91c2816add..4926508bbd9be9 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -430,7 +430,6 @@ struct ib_device_attr {
int max_mcast_qp_attach;
int max_total_mcast_qp_attach;
int max_ah;
- int max_map_per_fmr;
int max_srq;
int max_srq_wr;
int max_srq_sge;
--
2.26.2
^ permalink raw reply related [flat|nested] 20+ messages in thread* Re: [PATCH v3 00/13] Remove FMR support from RDMA drivers
2020-05-28 19:45 [PATCH v3 00/13] Remove FMR support from RDMA drivers Jason Gunthorpe
` (12 preceding siblings ...)
2020-05-28 19:45 ` [PATCH v3 13/13] RDMA: Remove 'max_map_per_fmr' Jason Gunthorpe
@ 2020-05-29 19:17 ` Jason Gunthorpe
13 siblings, 0 replies; 20+ messages in thread
From: Jason Gunthorpe @ 2020-05-29 19:17 UTC (permalink / raw)
To: linux-rdma, netdev
Cc: Ariel Elior, aron.silverton, Bernard Metzler, Bart Van Assche,
Dennis Dalessandro, Devesh Sharma, Faisal Latif, Gal Pressman,
Israel Rukshin, Leon Romanovsky, Max Gurtovoy, Mike Marciniszyn,
Michal Kalderon, oren, Sagi Grimberg, santosh.shilimkar,
Selvin Xavier, Shiraz Saleem, shlomin, Somnath Kotur,
Sriharsha Basavapatna, vladimirk, Yishai Hadas
On Thu, May 28, 2020 at 04:45:42PM -0300, Jason Gunthorpe wrote:
> From: Jason Gunthorpe <jgg@mellanox.com>
>
> This series removes the support for FMR mode to register memory. This
> ancient mode is unsafe (rkeys that are usually exposed for caching
> purposes and the API is limited to page granularity mappings) and not
> maintained/tested in the last few years. It also doesn't have any
> reasonable advantage over other memory registration methods such as
> FRWR (that is implemented in all the recent RDMA adapters). This series
> should be reviewed and approved by the maintainer of the effected drivers
> and I suggest to test it as well.
>
> Changes from V2:
> - Removed more occurances of _fmr
> - Remove max_map_per_fmr device attribute
> - Remove max_fmr device attribute
> - Remove additional dead code from bnxt_re and i40iw
> - Revised RDS to not use ib_fmr_attr or other fmr things
> - Rebased on RDMA for-next
> Changes from V1:
> https://lore.kernel.org/linux-rdma/20200527094634.24240-1-maxg@mellanox.com/
> - added "RDMA/mlx5: Remove FMR leftovers" (from GalP)
> - rebased on top of "Linux 5.7-rc7"
> - added "Reviewed-by" Bart signature for SRP
>
> Cc: shlomin@mellanox.com
> Cc: vladimirk@mellanox.com
> Cc: oren@mellanox.com
>
> Gal Pressman (1):
> RDMA/mlx5: Remove FMR leftovers
>
> Israel Rukshin (1):
> RDMA/iser: Remove support for FMR memory registration
>
> Jason Gunthorpe (4):
> RDMA/bnxt_re: Remove FMR leftovers
> RDMA/i40iw: Remove FMR leftovers
> RDMA: Remove 'max_fmr'
> RDMA: Remove 'max_map_per_fmr'
>
> Max Gurtovoy (7):
> RDMA/srp: Remove support for FMR memory registration
> RDMA/rds: Remove FMR support for memory registration
> RDMA/core: Remove FMR pool API
> RDMA/mlx4: Remove FMR support for memory registration
> RDMA/mthca: Remove FMR support for memory registration
> RDMA/rdmavt: Remove FMR memory registration
> RDMA/core: Remove FMR device ops
Applied to for-next
Jason
^ permalink raw reply [flat|nested] 20+ messages in thread