* [PATCH net 1/5] bnxt_en: fix devlink port registration to netdev
2022-12-27 3:19 [PATCH net 0/5] bnxt_en: Bug fixes Michael Chan
@ 2022-12-27 3:19 ` Michael Chan
2022-12-27 3:19 ` [PATCH net 2/5] bnxt_en: Simplify bnxt_xdp_buff_init() Michael Chan
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Michael Chan @ 2022-12-27 3:19 UTC (permalink / raw)
To: davem; +Cc: netdev, kuba, edumazet, pabeni, bpf, gospo, Vikas Gupta, Jiri Pirko
[-- Attachment #1: Type: text/plain, Size: 3469 bytes --]
From: Vikas Gupta <vikas.gupta@broadcom.com>
We don't register a devlink port in case of a VF so
avoid setting the devlink pointer to netdev.
Also, SET_NETDEV_DEVLINK_PORT has to be moved
so that we determine whether the device is PF/VF first.
This fixes the NULL pointer dereference of devlink_port->devlink
when creating VFs:
BUG: kernel NULL pointer dereference, address: 0000000000000160
PGD 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 14 PID: 388 Comm: kworker/14:1 Kdump: loaded Not tainted 6.1.0-rc8 #5
Hardware name: Dell Inc. PowerEdge R750/06V45N, BIOS 1.3.8 08/31/2021
Workqueue: events work_for_cpu_fn
RIP: 0010:devlink_nl_port_handle_size+0xb/0x50
Code: 83 c4 10 5b 5d c3 cc cc cc cc b8 a6 ff ff ff eb de e8 c9 59 21 00 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 53 48 8b 47 20 <48> 8b a8 60 01 00 00 48 8b 45 60 48 8b 38 e8 92 90 1a 00 48 8b 7d
RSP: 0018:ff4fe5394846fcd8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000794 RCX: 0000000000000000
RDX: ff1f129683a30a40 RSI: 0000000000000008 RDI: ff1f1296bb496188
RBP: 0000000000000334 R08: 0000000000000cc0 R09: 0000000000000000
R10: ff1f1296bb494298 R11: ffffffffffffffc0 R12: 0000000000000000
R13: 0000000000000000 R14: ff1f1296bb494000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ff1f129e5fa00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000160 CR3: 000000131f610006 CR4: 0000000000771ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
<TASK>
if_nlmsg_size+0x14a/0x220
rtmsg_ifinfo_build_skb+0x3c/0x100
rtmsg_ifinfo+0x9c/0xc0
register_netdevice+0x59d/0x670
register_netdev+0x1c/0x40
bnxt_init_one+0x674/0xa60 [bnxt_en]
local_pci_probe+0x42/0x80
work_for_cpu_fn+0x13/0x20
process_one_work+0x1e2/0x3b0
? rescuer_thread+0x390/0x390
worker_thread+0x1c4/0x3a0
? rescuer_thread+0x390/0x390
kthread+0xd6/0x100
? kthread_complete_and_exit+0x20/0x20
Fixes: ac73d4bf2cda ("net: make drivers to use SET_NETDEV_DEVLINK_PORT to set devlink_port")
Cc: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Reviewed-by: Kalesh Anakkur Purayil <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Damodharam Ammepalli <damodharam.ammepalli@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 4c7d07c684c4..93d32b333007 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -13591,7 +13591,6 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
return -ENOMEM;
bp = netdev_priv(dev);
- SET_NETDEV_DEVLINK_PORT(dev, &bp->dl_port);
bp->board_idx = ent->driver_data;
bp->msg_enable = BNXT_DEF_MSG_ENABLE;
bnxt_set_max_func_irqs(bp, max_irqs);
@@ -13599,6 +13598,10 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (bnxt_vf_pciid(bp->board_idx))
bp->flags |= BNXT_FLAG_VF;
+ /* No devlink port registration in case of a VF */
+ if (BNXT_PF(bp))
+ SET_NETDEV_DEVLINK_PORT(dev, &bp->dl_port);
+
if (pdev->msix_cap)
bp->flags |= BNXT_FLAG_MSIX_CAP;
--
2.18.1
[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 4209 bytes --]
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH net 2/5] bnxt_en: Simplify bnxt_xdp_buff_init()
2022-12-27 3:19 [PATCH net 0/5] bnxt_en: Bug fixes Michael Chan
2022-12-27 3:19 ` [PATCH net 1/5] bnxt_en: fix devlink port registration to netdev Michael Chan
@ 2022-12-27 3:19 ` Michael Chan
2022-12-27 3:19 ` [PATCH net 3/5] bnxt_en: Fix XDP RX path Michael Chan
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Michael Chan @ 2022-12-27 3:19 UTC (permalink / raw)
To: davem; +Cc: netdev, kuba, edumazet, pabeni, bpf, gospo
[-- Attachment #1: Type: text/plain, Size: 3212 bytes --]
bnxt_xdp_buff_init() does not modify the data_ptr or the len parameters,
so no need to pass in the addresses of these parameters.
Fixes: b231c3f3414c ("bnxt: refactor bnxt_rx_xdp to separate xdp_init_buff/xdp_prepare_buff")
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +-
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 6 +++---
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h | 2 +-
3 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 93d32b333007..b8639b7e6b2b 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1925,7 +1925,7 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
dma_addr = rx_buf->mapping;
if (bnxt_xdp_attached(bp, rxr)) {
- bnxt_xdp_buff_init(bp, rxr, cons, &data_ptr, &len, &xdp);
+ bnxt_xdp_buff_init(bp, rxr, cons, data_ptr, len, &xdp);
if (agg_bufs) {
u32 frag_len = bnxt_rx_agg_pages_xdp(bp, cpr, &xdp,
cp_cons, agg_bufs,
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
index c3065ec0a479..1847f191577d 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
@@ -177,7 +177,7 @@ bool bnxt_xdp_attached(struct bnxt *bp, struct bnxt_rx_ring_info *rxr)
}
void bnxt_xdp_buff_init(struct bnxt *bp, struct bnxt_rx_ring_info *rxr,
- u16 cons, u8 **data_ptr, unsigned int *len,
+ u16 cons, u8 *data_ptr, unsigned int len,
struct xdp_buff *xdp)
{
struct bnxt_sw_rx_bd *rx_buf;
@@ -191,13 +191,13 @@ void bnxt_xdp_buff_init(struct bnxt *bp, struct bnxt_rx_ring_info *rxr,
offset = bp->rx_offset;
mapping = rx_buf->mapping - bp->rx_dma_offset;
- dma_sync_single_for_cpu(&pdev->dev, mapping + offset, *len, bp->rx_dir);
+ dma_sync_single_for_cpu(&pdev->dev, mapping + offset, len, bp->rx_dir);
if (bp->xdp_has_frags)
buflen = BNXT_PAGE_MODE_BUF_SIZE + offset;
xdp_init_buff(xdp, buflen, &rxr->xdp_rxq);
- xdp_prepare_buff(xdp, *data_ptr - offset, offset, *len, false);
+ xdp_prepare_buff(xdp, data_ptr - offset, offset, len, false);
}
void bnxt_xdp_buff_frags_free(struct bnxt_rx_ring_info *rxr,
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h
index 505911ae095d..2bbdb8e7c506 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h
@@ -27,7 +27,7 @@ int bnxt_xdp_xmit(struct net_device *dev, int num_frames,
bool bnxt_xdp_attached(struct bnxt *bp, struct bnxt_rx_ring_info *rxr);
void bnxt_xdp_buff_init(struct bnxt *bp, struct bnxt_rx_ring_info *rxr,
- u16 cons, u8 **data_ptr, unsigned int *len,
+ u16 cons, u8 *data_ptr, unsigned int len,
struct xdp_buff *xdp);
void bnxt_xdp_buff_frags_free(struct bnxt_rx_ring_info *rxr,
struct xdp_buff *xdp);
--
2.18.1
[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 4209 bytes --]
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH net 3/5] bnxt_en: Fix XDP RX path
2022-12-27 3:19 [PATCH net 0/5] bnxt_en: Bug fixes Michael Chan
2022-12-27 3:19 ` [PATCH net 1/5] bnxt_en: fix devlink port registration to netdev Michael Chan
2022-12-27 3:19 ` [PATCH net 2/5] bnxt_en: Simplify bnxt_xdp_buff_init() Michael Chan
@ 2022-12-27 3:19 ` Michael Chan
2022-12-27 3:19 ` [PATCH net 4/5] bnxt_en: Fix first buffer size calculations for XDP multi-buffer Michael Chan
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Michael Chan @ 2022-12-27 3:19 UTC (permalink / raw)
To: davem; +Cc: netdev, kuba, edumazet, pabeni, bpf, gospo
[-- Attachment #1: Type: text/plain, Size: 3254 bytes --]
The XDP program can change the starting address of the RX data buffer and
this information needs to be passed back from bnxt_rx_xdp() to
bnxt_rx_pkt() for the XDP_PASS case so that the SKB can point correctly
to the modified buffer address. Add back the data_ptr parameter to
bnxt_rx_xdp() to make this work.
Fixes: b231c3f3414c ("bnxt: refactor bnxt_rx_xdp to separate xdp_init_buff/xdp_prepare_buff")
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +-
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 7 +++++--
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h | 4 ++--
3 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index b8639b7e6b2b..1acabfe26db1 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1940,7 +1940,7 @@ static int bnxt_rx_pkt(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
}
if (xdp_active) {
- if (bnxt_rx_xdp(bp, rxr, cons, xdp, data, &len, event)) {
+ if (bnxt_rx_xdp(bp, rxr, cons, xdp, data, &data_ptr, &len, event)) {
rc = 1;
goto next_rx;
}
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
index 1847f191577d..2ceeaa818c1c 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
@@ -222,7 +222,8 @@ void bnxt_xdp_buff_frags_free(struct bnxt_rx_ring_info *rxr,
* false - packet should be passed to the stack.
*/
bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons,
- struct xdp_buff xdp, struct page *page, unsigned int *len, u8 *event)
+ struct xdp_buff xdp, struct page *page, u8 **data_ptr,
+ unsigned int *len, u8 *event)
{
struct bpf_prog *xdp_prog = READ_ONCE(rxr->xdp_prog);
struct bnxt_tx_ring_info *txr;
@@ -255,8 +256,10 @@ bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons,
*event &= ~BNXT_RX_EVENT;
*len = xdp.data_end - xdp.data;
- if (orig_data != xdp.data)
+ if (orig_data != xdp.data) {
offset = xdp.data - xdp.data_hard_start;
+ *data_ptr = xdp.data_hard_start + offset;
+ }
switch (act) {
case XDP_PASS:
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h
index 2bbdb8e7c506..ea430d6961df 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.h
@@ -18,8 +18,8 @@ struct bnxt_sw_tx_bd *bnxt_xmit_bd(struct bnxt *bp,
struct xdp_buff *xdp);
void bnxt_tx_int_xdp(struct bnxt *bp, struct bnxt_napi *bnapi, int nr_pkts);
bool bnxt_rx_xdp(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, u16 cons,
- struct xdp_buff xdp, struct page *page, unsigned int *len,
- u8 *event);
+ struct xdp_buff xdp, struct page *page, u8 **data_ptr,
+ unsigned int *len, u8 *event);
int bnxt_xdp(struct net_device *dev, struct netdev_bpf *xdp);
int bnxt_xdp_xmit(struct net_device *dev, int num_frames,
struct xdp_frame **frames, u32 flags);
--
2.18.1
[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 4209 bytes --]
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH net 4/5] bnxt_en: Fix first buffer size calculations for XDP multi-buffer
2022-12-27 3:19 [PATCH net 0/5] bnxt_en: Bug fixes Michael Chan
` (2 preceding siblings ...)
2022-12-27 3:19 ` [PATCH net 3/5] bnxt_en: Fix XDP RX path Michael Chan
@ 2022-12-27 3:19 ` Michael Chan
2022-12-27 3:19 ` [PATCH net 5/5] bnxt_en: Fix HDS and jumbo thresholds for RX packets Michael Chan
2022-12-28 10:20 ` [PATCH net 0/5] bnxt_en: Bug fixes patchwork-bot+netdevbpf
5 siblings, 0 replies; 7+ messages in thread
From: Michael Chan @ 2022-12-27 3:19 UTC (permalink / raw)
To: davem; +Cc: netdev, kuba, edumazet, pabeni, bpf, gospo
[-- Attachment #1: Type: text/plain, Size: 4726 bytes --]
The size of the first buffer is always page size, and the useable
space is the page size minus the offset and the skb_shared_info size.
Make sure SKB and XDP buf sizes match so that the skb_shared_info
is at the same offset seen from the SKB and XDP_BUF.
build_skb() should be passed PAGE_SIZE. xdp_init_buff() should
be passed PAGE_SIZE as well. xdp_get_shared_info_from_buff() will
automatically deduct the skb_shared_info size if the XDP buffer
has frags. There is no need to keep bp->xdp_has_frags.
Change BNXT_PAGE_MODE_BUF_SIZE to BNXT_MAX_PAGE_MODE_MTU_SBUF
since this constant is really the MTU with ethernet header size
subtracted.
Also fix the BNXT_MAX_PAGE_MODE_MTU macro with proper parentheses.
Fixes: 32861236190b ("bnxt: change receive ring space parameters")
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 9 +++++----
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 15 +++++++++++----
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 7 +------
3 files changed, 17 insertions(+), 14 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 1acabfe26db1..a21c6829e301 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -991,8 +991,7 @@ static struct sk_buff *bnxt_rx_multi_page_skb(struct bnxt *bp,
dma_addr -= bp->rx_dma_offset;
dma_unmap_page_attrs(&bp->pdev->dev, dma_addr, PAGE_SIZE, bp->rx_dir,
DMA_ATTR_WEAK_ORDERING);
- skb = build_skb(page_address(page), BNXT_PAGE_MODE_BUF_SIZE +
- bp->rx_dma_offset);
+ skb = build_skb(page_address(page), PAGE_SIZE);
if (!skb) {
__free_page(page);
return NULL;
@@ -3969,8 +3968,10 @@ void bnxt_set_ring_params(struct bnxt *bp)
bp->rx_agg_ring_mask = (bp->rx_agg_nr_pages * RX_DESC_CNT) - 1;
if (BNXT_RX_PAGE_MODE(bp)) {
- rx_space = BNXT_PAGE_MODE_BUF_SIZE;
- rx_size = BNXT_MAX_PAGE_MODE_MTU;
+ rx_space = PAGE_SIZE;
+ rx_size = PAGE_SIZE -
+ ALIGN(max(NET_SKB_PAD, XDP_PACKET_HEADROOM), 8) -
+ SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
} else {
rx_size = SKB_DATA_ALIGN(BNXT_RX_COPY_THRESH + NET_IP_ALIGN);
rx_space = rx_size + NET_SKB_PAD +
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 41c6dd0ae447..5163ef4a49ea 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -591,12 +591,20 @@ struct nqe_cn {
#define BNXT_RX_PAGE_SIZE (1 << BNXT_RX_PAGE_SHIFT)
#define BNXT_MAX_MTU 9500
-#define BNXT_PAGE_MODE_BUF_SIZE \
+
+/* First RX buffer page in XDP multi-buf mode
+ *
+ * +-------------------------------------------------------------------------+
+ * | XDP_PACKET_HEADROOM | bp->rx_buf_use_size | skb_shared_info|
+ * | (bp->rx_dma_offset) | | |
+ * +-------------------------------------------------------------------------+
+ */
+#define BNXT_MAX_PAGE_MODE_MTU_SBUF \
((unsigned int)PAGE_SIZE - VLAN_ETH_HLEN - NET_IP_ALIGN - \
XDP_PACKET_HEADROOM)
#define BNXT_MAX_PAGE_MODE_MTU \
- BNXT_PAGE_MODE_BUF_SIZE - \
- SKB_DATA_ALIGN((unsigned int)sizeof(struct skb_shared_info))
+ (BNXT_MAX_PAGE_MODE_MTU_SBUF - \
+ SKB_DATA_ALIGN((unsigned int)sizeof(struct skb_shared_info)))
#define BNXT_MIN_PKT_SIZE 52
@@ -2134,7 +2142,6 @@ struct bnxt {
#define BNXT_DUMP_CRASH 1
struct bpf_prog *xdp_prog;
- u8 xdp_has_frags;
struct bnxt_ptp_cfg *ptp_cfg;
u8 ptp_all_rx_tstamp;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
index 2ceeaa818c1c..36d5202c0aee 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
@@ -193,9 +193,6 @@ void bnxt_xdp_buff_init(struct bnxt *bp, struct bnxt_rx_ring_info *rxr,
mapping = rx_buf->mapping - bp->rx_dma_offset;
dma_sync_single_for_cpu(&pdev->dev, mapping + offset, len, bp->rx_dir);
- if (bp->xdp_has_frags)
- buflen = BNXT_PAGE_MODE_BUF_SIZE + offset;
-
xdp_init_buff(xdp, buflen, &rxr->xdp_rxq);
xdp_prepare_buff(xdp, data_ptr - offset, offset, len, false);
}
@@ -404,10 +401,8 @@ static int bnxt_xdp_set(struct bnxt *bp, struct bpf_prog *prog)
netdev_warn(dev, "ethtool rx/tx channels must be combined to support XDP.\n");
return -EOPNOTSUPP;
}
- if (prog) {
+ if (prog)
tx_xdp = bp->rx_nr_rings;
- bp->xdp_has_frags = prog->aux->xdp_has_frags;
- }
tc = netdev_get_num_tc(dev);
if (!tc)
--
2.18.1
[-- Attachment #2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 4209 bytes --]
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH net 5/5] bnxt_en: Fix HDS and jumbo thresholds for RX packets
2022-12-27 3:19 [PATCH net 0/5] bnxt_en: Bug fixes Michael Chan
` (3 preceding siblings ...)
2022-12-27 3:19 ` [PATCH net 4/5] bnxt_en: Fix first buffer size calculations for XDP multi-buffer Michael Chan
@ 2022-12-27 3:19 ` Michael Chan
2022-12-28 10:20 ` [PATCH net 0/5] bnxt_en: Bug fixes patchwork-bot+netdevbpf
5 siblings, 0 replies; 7+ messages in thread
From: Michael Chan @ 2022-12-27 3:19 UTC (permalink / raw)
To: davem; +Cc: netdev, kuba, edumazet, pabeni, bpf, gospo
[-- Attachment #1: Type: text/plain, Size: 2013 bytes --]
The recent XDP multi-buffer feature has introduced regressions in the
setting of HDS and jumbo thresholds. HDS was accidentally disabled in
the nornmal mode without XDP. This patch restores jumbo HDS placement
when not in XDP mode. In XDP multi-buffer mode, HDS should be disabled
and the jumbo threshold should be set to the usable page size in the
first page buffer.
Fixes: 32861236190b ("bnxt: change receive ring space parameters")
Reviewed-by: Mohammad Shuab Siddique <mohammad-shuab.siddique@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index a21c6829e301..16ce7a90610c 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -5399,15 +5399,16 @@ static int bnxt_hwrm_vnic_set_hds(struct bnxt *bp, u16 vnic_id)
req->flags = cpu_to_le32(VNIC_PLCMODES_CFG_REQ_FLAGS_JUMBO_PLACEMENT);
req->enables = cpu_to_le32(VNIC_PLCMODES_CFG_REQ_ENABLES_JUMBO_THRESH_VALID);
- if (BNXT_RX_PAGE_MODE(bp) && !BNXT_RX_JUMBO_MODE(bp)) {
+ if (BNXT_RX_PAGE_MODE(bp)) {
+ req->jumbo_thresh = cpu_to_le16(bp->rx_buf_use_size);
+ } else {
req->flags |= cpu_to_le32(VNIC_PLCMODES_CFG_REQ_FLAGS_HDS_IPV4 |
VNIC_PLCMODES_CFG_REQ_FLAGS_HDS_IPV6);
req->enables |=
cpu_to_le32(VNIC_PLCMODES_CFG_REQ_ENABLES_HDS_THRESHOLD_VALID);
+ req->jumbo_thresh = cpu_to_le16(bp->rx_copy_thresh);
+ req->hds_threshold = cpu_to_le16(bp->rx_copy_thresh);
}
- /* thresholds not implemented in firmware yet */
- req->jumbo_thresh = cpu_to_le16(bp->rx_copy_thresh);
- req->hds_threshold = cpu_to_le16(bp->rx_copy_thresh);
req->vnic_id = cpu_to_le32(vnic->fw_vnic_id);
return hwrm_req_send(bp, req);
}
--
2.18.1
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^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH net 0/5] bnxt_en: Bug fixes
2022-12-27 3:19 [PATCH net 0/5] bnxt_en: Bug fixes Michael Chan
` (4 preceding siblings ...)
2022-12-27 3:19 ` [PATCH net 5/5] bnxt_en: Fix HDS and jumbo thresholds for RX packets Michael Chan
@ 2022-12-28 10:20 ` patchwork-bot+netdevbpf
5 siblings, 0 replies; 7+ messages in thread
From: patchwork-bot+netdevbpf @ 2022-12-28 10:20 UTC (permalink / raw)
To: Michael Chan; +Cc: davem, netdev, kuba, edumazet, pabeni, bpf, gospo
Hello:
This series was applied to netdev/net.git (master)
by David S. Miller <davem@davemloft.net>:
On Mon, 26 Dec 2022 22:19:35 -0500 you wrote:
> This series fixes a devlink bug and several XDP related bugs. The
> devlink bug causes a kernel crash on VF devices. The XDP driver
> patches fix and clean up the RX XDP path and re-enable header-data
> split that was disabled by mistake when adding the XDP multi-buffer
> support.
>
> Michael Chan (4):
> bnxt_en: Simplify bnxt_xdp_buff_init()
> bnxt_en: Fix XDP RX path
> bnxt_en: Fix first buffer size calculations for XDP multi-buffer
> bnxt_en: Fix HDS and jumbo thresholds for RX packets
>
> [...]
Here is the summary with links:
- [net,1/5] bnxt_en: fix devlink port registration to netdev
https://git.kernel.org/netdev/net/c/0020ae2a4aa8
- [net,2/5] bnxt_en: Simplify bnxt_xdp_buff_init()
https://git.kernel.org/netdev/net/c/bbfc17e50ba2
- [net,3/5] bnxt_en: Fix XDP RX path
https://git.kernel.org/netdev/net/c/9b3e607871ea
- [net,4/5] bnxt_en: Fix first buffer size calculations for XDP multi-buffer
https://git.kernel.org/netdev/net/c/1abeacc1979f
- [net,5/5] bnxt_en: Fix HDS and jumbo thresholds for RX packets
https://git.kernel.org/netdev/net/c/a056ebcc30e2
You are awesome, thank you!
--
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^ permalink raw reply [flat|nested] 7+ messages in thread