This is a note to let you know that I've just added the patch titled
net: hns3: fix the max tx size according to user manual
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-hns3-fix-the-max-tx-size-according-to-user-manual.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From adfb7b4966c0c4c63a791f202b8b3837b07a9ece Mon Sep 17 00:00:00 2001
From: Yunsheng Lin <linyunsheng@xxxxxxxxxx>
Date: Tue, 19 Oct 2021 22:16:31 +0800
Subject: net: hns3: fix the max tx size according to user manual
From: Yunsheng Lin <linyunsheng@xxxxxxxxxx>
commit adfb7b4966c0c4c63a791f202b8b3837b07a9ece upstream.
Currently the max tx size supported by the hw is calculated by
using the max BD num supported by the hw. According to the hw
user manual, the max tx size is fixed value for both non-TSO and
TSO skb.
This patch updates the max tx size according to the manual.
Fixes: 8ae10cfb5089("net: hns3: support tx-scatter-gather-fraglist feature")
Signed-off-by: Yunsheng Lin <linyunsheng@xxxxxxxxxx>
Signed-off-by: Guangbin Huang <huangguangbin2@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 7 ++-----
drivers/net/ethernet/hisilicon/hns3/hns3_enet.h | 6 ++----
2 files changed, 4 insertions(+), 9 deletions(-)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1283,7 +1283,6 @@ void hns3_shinfo_pack(struct skb_shared_
static int hns3_skb_linearize(struct hns3_enet_ring *ring,
struct sk_buff *skb,
- u8 max_non_tso_bd_num,
unsigned int bd_num)
{
/* 'bd_num == UINT_MAX' means the skb' fraglist has a
@@ -1300,8 +1299,7 @@ static int hns3_skb_linearize(struct hns
* will not help.
*/
if (skb->len > HNS3_MAX_TSO_SIZE ||
- (!skb_is_gso(skb) && skb->len >
- HNS3_MAX_NON_TSO_SIZE(max_non_tso_bd_num))) {
+ (!skb_is_gso(skb) && skb->len > HNS3_MAX_NON_TSO_SIZE)) {
u64_stats_update_begin(&ring->syncp);
ring->stats.hw_limitation++;
u64_stats_update_end(&ring->syncp);
@@ -1336,8 +1334,7 @@ static int hns3_nic_maybe_stop_tx(struct
goto out;
}
- if (hns3_skb_linearize(ring, skb, max_non_tso_bd_num,
- bd_num))
+ if (hns3_skb_linearize(ring, skb, bd_num))
return -ENOMEM;
bd_num = hns3_tx_bd_count(skb->len);
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
@@ -170,11 +170,9 @@ enum hns3_nic_state {
#define HNS3_MAX_BD_SIZE 65535
#define HNS3_MAX_TSO_BD_NUM 63U
-#define HNS3_MAX_TSO_SIZE \
- (HNS3_MAX_BD_SIZE * HNS3_MAX_TSO_BD_NUM)
+#define HNS3_MAX_TSO_SIZE 1048576U
+#define HNS3_MAX_NON_TSO_SIZE 9728U
-#define HNS3_MAX_NON_TSO_SIZE(max_non_tso_bd_num) \
- (HNS3_MAX_BD_SIZE * (max_non_tso_bd_num))
#define HNS3_VECTOR_GL0_OFFSET 0x100
#define HNS3_VECTOR_GL1_OFFSET 0x200
Patches currently in stable-queue which might be from linyunsheng@xxxxxxxxxx are
queue-5.10/net-hns3-schedule-the-polling-again-when-allocation-.patch
queue-5.10/net-hns3-fix-the-max-tx-size-according-to-user-manual.patch
