From: Weihang Li Date: Thu, 8 Aug 2019 14:53:53 +0000 (+0800) Subject: RDMA/hns: Disable alw_lcl_lpbk of SSU X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d967e2625faa43da9e3be3228b8c57d3cf404953;p=linux.git RDMA/hns: Disable alw_lcl_lpbk of SSU If we enabled alw_lcl_lpbk in promiscuous mode, packet whose source and destination mac address is equal will be handled in both inner loopback and outer loopback. This will halve performance of roce in promiscuous mode. Signed-off-by: Weihang Li Link: https://lore.kernel.org/r/1565276034-97329-14-git-send-email-oulijun@huawei.com Signed-off-by: Doug Ledford --- diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index a1f62e072753c..a178d63f3ec86 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -1308,7 +1308,7 @@ static int hns_roce_set_vf_switch_param(struct hns_roce_dev *hr_dev, cpu_to_le16(HNS_ROCE_CMD_FLAG_NO_INTR | HNS_ROCE_CMD_FLAG_IN); desc.flag &= cpu_to_le16(~HNS_ROCE_CMD_FLAG_WR); roce_set_bit(swt->cfg, VF_SWITCH_DATA_CFG_ALW_LPBK_S, 1); - roce_set_bit(swt->cfg, VF_SWITCH_DATA_CFG_ALW_LCL_LPBK_S, 1); + roce_set_bit(swt->cfg, VF_SWITCH_DATA_CFG_ALW_LCL_LPBK_S, 0); roce_set_bit(swt->cfg, VF_SWITCH_DATA_CFG_ALW_DST_OVRD_S, 1); return hns_roce_cmq_send(hr_dev, &desc, 1);