From adfb7b4966c0c4c63a791f202b8b3837b07a9ece Mon Sep 17 00:00:00 2001 From: Yunsheng Lin Date: Tue, 19 Oct 2021 22:16:31 +0800 Subject: [PATCH] net: hns3: fix the max tx size according to user manual 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 Signed-off-by: Guangbin Huang Signed-off-by: David S. Miller --- 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(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 468b8f07bf47c..ea89772e8952e 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -1847,7 +1847,6 @@ void hns3_shinfo_pack(struct skb_shared_info *shinfo, __u32 *size) 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 @@ -1864,8 +1863,7 @@ static int hns3_skb_linearize(struct hns3_enet_ring *ring, * 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); @@ -1900,8 +1898,7 @@ static int hns3_nic_maybe_stop_tx(struct hns3_enet_ring *ring, 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); diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h index 6162d9f88e373..9d9be3665bb1f 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h @@ -186,11 +186,9 @@ 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 -- 2.39.5