From: Alexander Lobakin <alobakin@marvell.com>
To: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Cc: Alexander Lobakin <alobakin@marvell.com>,
Igor Russkikh <irusskikh@marvell.com>,
Michal Kalderon <michal.kalderon@marvell.com>,
"Ariel Elior" <aelior@marvell.com>,
Denis Bolotin <denis.bolotin@marvell.com>,
"Doug Ledford" <dledford@redhat.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
"Alexei Starovoitov" <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
"Jesper Dangaard Brouer" <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
"Yonghong Song" <yhs@fb.com>, Andrii Nakryiko <andriin@fb.com>,
KP Singh <kpsingh@chromium.org>,
<GR-everest-linux-l2@marvell.com>, <netdev@vger.kernel.org>,
<bpf@vger.kernel.org>, <linux-rdma@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH net-next 05/15] qed: sanitize PBL chains allocation
Date: Wed, 22 Jul 2020 18:53:39 +0300 [thread overview]
Message-ID: <20200722155349.747-6-alobakin@marvell.com> (raw)
In-Reply-To: <20200722155349.747-1-alobakin@marvell.com>
PBL chain elements are actually DMA addresses stored in __le64, but
currently their size is hardcoded to 8, and DMA addresses are assigned
via cast to variable-sized dma_addr_t without any bitwise conversions.
Change the type of pbl_virt array to match the actual one, add a new
field to store the size of allocated DMA memory and sanitize elements
assignment.
Misc: give more logic names to the members of qed_chain::pbl_sp embedded
struct.
Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
---
drivers/net/ethernet/qlogic/qed/qed_chain.c | 21 +++++++++----------
.../net/ethernet/qlogic/qed/qed_sp_commands.c | 4 ++--
include/linux/qed/qed_chain.h | 16 +++++++-------
3 files changed, 20 insertions(+), 21 deletions(-)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_chain.c b/drivers/net/ethernet/qlogic/qed/qed_chain.c
index fd2d985793dc..b1a3fe4d35b6 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_chain.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_chain.c
@@ -47,7 +47,7 @@ static void qed_chain_free_pbl(struct qed_dev *cdev, struct qed_chain *chain)
{
struct device *dev = &cdev->pdev->dev;
struct addr_tbl_entry *entry;
- u32 pbl_size, i;
+ u32 i;
if (!chain->pbl.pp_addr_tbl)
return;
@@ -61,11 +61,10 @@ static void qed_chain_free_pbl(struct qed_dev *cdev, struct qed_chain *chain)
entry->dma_map);
}
- pbl_size = chain->page_cnt * QED_CHAIN_PBL_ENTRY_SIZE;
-
if (!chain->b_external_pbl)
- dma_free_coherent(dev, pbl_size, chain->pbl_sp.p_virt_table,
- chain->pbl_sp.p_phys_table);
+ dma_free_coherent(dev, chain->pbl_sp.table_size,
+ chain->pbl_sp.table_virt,
+ chain->pbl_sp.table_phys);
vfree(chain->pbl.pp_addr_tbl);
chain->pbl.pp_addr_tbl = NULL;
@@ -188,7 +187,7 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain,
struct device *dev = &cdev->pdev->dev;
struct addr_tbl_entry *addr_tbl;
dma_addr_t phys, pbl_phys;
- void *pbl_virt;
+ __le64 *pbl_virt;
u32 page_cnt, i;
size_t size;
void *virt;
@@ -212,7 +211,7 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain,
chain->b_external_pbl = true;
} else {
- size = array_size(page_cnt, QED_CHAIN_PBL_ENTRY_SIZE);
+ size = array_size(page_cnt, sizeof(*pbl_virt));
if (unlikely(size == SIZE_MAX))
return -EOVERFLOW;
@@ -223,8 +222,9 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain,
if (!pbl_virt)
return -ENOMEM;
- chain->pbl_sp.p_virt_table = pbl_virt;
- chain->pbl_sp.p_phys_table = pbl_phys;
+ chain->pbl_sp.table_virt = pbl_virt;
+ chain->pbl_sp.table_phys = pbl_phys;
+ chain->pbl_sp.table_size = size;
for (i = 0; i < page_cnt; i++) {
virt = dma_alloc_coherent(dev, QED_CHAIN_PAGE_SIZE, &phys,
@@ -238,8 +238,7 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain,
}
/* Fill the PBL table with the physical address of the page */
- *(dma_addr_t *)pbl_virt = phys;
- pbl_virt += QED_CHAIN_PBL_ENTRY_SIZE;
+ pbl_virt[i] = cpu_to_le64(phys);
/* Keep the virtual address of the page */
addr_tbl[i].virt_addr = virt;
diff --git a/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c b/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c
index 8142f5669b26..aa71adcf31ee 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_sp_commands.c
@@ -366,11 +366,11 @@ int qed_sp_pf_start(struct qed_hwfn *p_hwfn,
/* Place EQ address in RAMROD */
DMA_REGPAIR_LE(p_ramrod->event_ring_pbl_addr,
- p_hwfn->p_eq->chain.pbl_sp.p_phys_table);
+ qed_chain_get_pbl_phys(&p_hwfn->p_eq->chain));
page_cnt = (u8)qed_chain_get_page_cnt(&p_hwfn->p_eq->chain);
p_ramrod->event_ring_num_pages = page_cnt;
DMA_REGPAIR_LE(p_ramrod->consolid_q_pbl_addr,
- p_hwfn->p_consq->chain.pbl_sp.p_phys_table);
+ qed_chain_get_pbl_phys(&p_hwfn->p_consq->chain));
qed_tunn_set_pf_start_params(p_hwfn, p_tunn, &p_ramrod->tunnel_config);
diff --git a/include/linux/qed/qed_chain.h b/include/linux/qed/qed_chain.h
index 087073517c09..265e0b671a5c 100644
--- a/include/linux/qed/qed_chain.h
+++ b/include/linux/qed/qed_chain.h
@@ -127,8 +127,9 @@ struct qed_chain {
/* Base address of a pre-allocated buffer for pbl */
struct {
- dma_addr_t p_phys_table;
- void *p_virt_table;
+ __le64 *table_virt;
+ dma_addr_t table_phys;
+ size_t table_size;
} pbl_sp;
/* Address of first page of the chain - the address is required
@@ -146,7 +147,6 @@ struct qed_chain {
bool b_external_pbl;
};
-#define QED_CHAIN_PBL_ENTRY_SIZE 8
#define QED_CHAIN_PAGE_SIZE 0x1000
#define ELEMS_PER_PAGE(elem_size) \
@@ -236,7 +236,7 @@ static inline u32 qed_chain_get_page_cnt(struct qed_chain *p_chain)
static inline dma_addr_t qed_chain_get_pbl_phys(struct qed_chain *p_chain)
{
- return p_chain->pbl_sp.p_phys_table;
+ return p_chain->pbl_sp.table_phys;
}
/**
@@ -527,8 +527,8 @@ static inline void qed_chain_init_params(struct qed_chain *p_chain,
p_chain->capacity = p_chain->usable_per_page * page_cnt;
p_chain->size = p_chain->elem_per_page * page_cnt;
- p_chain->pbl_sp.p_phys_table = 0;
- p_chain->pbl_sp.p_virt_table = NULL;
+ p_chain->pbl_sp.table_phys = 0;
+ p_chain->pbl_sp.table_virt = NULL;
p_chain->pbl.pp_addr_tbl = NULL;
}
@@ -569,8 +569,8 @@ static inline void qed_chain_init_pbl_mem(struct qed_chain *p_chain,
dma_addr_t p_phys_pbl,
struct addr_tbl_entry *pp_addr_tbl)
{
- p_chain->pbl_sp.p_phys_table = p_phys_pbl;
- p_chain->pbl_sp.p_virt_table = p_virt_pbl;
+ p_chain->pbl_sp.table_phys = p_phys_pbl;
+ p_chain->pbl_sp.table_virt = p_virt_pbl;
p_chain->pbl.pp_addr_tbl = pp_addr_tbl;
}
--
2.25.1
next prev parent reply other threads:[~2020-07-22 15:55 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-22 15:53 [PATCH net-next 00/15] qed/qede: improve chain API and add XDP_REDIRECT support Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 01/15] qed: reformat "qed_chain.h" a bit Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 02/15] qed: reformat Makefile Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 03/15] qed: move chain methods to a separate file Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 04/15] qed: prevent possible double-frees of the chains Alexander Lobakin
2020-07-22 15:53 ` Alexander Lobakin [this message]
2020-07-22 15:53 ` [PATCH net-next 06/15] qed: move chain initialization inlines next to allocation functions Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 07/15] qed: simplify initialization of the chains with an external PBL Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 08/15] qed: simplify chain allocation with init params struct Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 09/15] qed: add support for different page sizes for chains Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 10/15] qed: optimize common chain accessors Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 11/15] qed: introduce qed_chain_get_elem_used{,u32}() Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 12/15] qede: reformat several structures in "qede.h" Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 13/15] qede: reformat net_device_ops declarations Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 14/15] qede: refactor XDP Tx processing Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 15/15] qede: add .ndo_xdp_xmit() and XDP_REDIRECT support Alexander Lobakin
2020-07-22 21:52 ` [PATCH net-next 03/15] qed: move chain methods to a separate file Alexander Lobakin
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