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RDMA/hns: Avoid setting loopback indicator when smac is same as dmac

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[ Upstream commit 3631dadfb118821236098a215e59fb5d3e1c30a8 ]

The loopback flag will be set to 1 by the hardware when the source mac
address is same as the destination mac address. So the driver don't need
to compare them.

Fixes: d6a3627e31 ("RDMA/hns: Optimize wqe buffer set flow for post send")
Link: https://lore.kernel.org/r/1605526408-6936-4-git-send-email-liweihang@huawei.com
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Weihang Li 2020-11-16 19:33:24 +08:00 committed by Greg Kroah-Hartman
parent 6b8a015eda
commit af7ae24594
1 changed files with 0 additions and 9 deletions
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9
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
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@ -433,8 +433,6 @@ static inline int set_ud_wqe(struct hns_roce_qp *qp,
unsigned int curr_idx = *sge_idx;
int valid_num_sge;
u32 msg_len = 0;
bool loopback;
u8 *smac;
int ret;
valid_num_sge = calc_wr_sge_num(wr, &msg_len);
@ -457,13 +455,6 @@ static inline int set_ud_wqe(struct hns_roce_qp *qp,
roce_set_field(ud_sq_wqe->byte_48, V2_UD_SEND_WQE_BYTE_48_DMAC_5_M,
V2_UD_SEND_WQE_BYTE_48_DMAC_5_S, ah->av.mac[5]);
/* MAC loopback */
smac = (u8 *)hr_dev->dev_addr[qp->port];
loopback = ether_addr_equal_unaligned(ah->av.mac, smac) ? 1 : 0;
roce_set_bit(ud_sq_wqe->byte_40,
V2_UD_SEND_WQE_BYTE_40_LBI_S, loopback);
ud_sq_wqe->msg_len = cpu_to_le32(msg_len);
/* Set sig attr */