From: Yunsheng Lin linyunsheng@huawei.com
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@huawei.com Signed-off-by: Guangbin Huang huangguangbin2@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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 @@ -1845,7 +1845,6 @@ 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 @@ -1862,8 +1861,7 @@ 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); @@ -1898,8 +1896,7 @@ 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 @@ -185,11 +185,9 @@ 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