RDMA/mana_ib: Fix DSCP value in modify QP

[ Upstream commit 62de0e67328e9503459a24b9343c3358937cdeef ]

Convert the traffic_class in GRH to a DSCP value as required by the HW.

Fixes: e095405b45bb ("RDMA/mana_ib: Modify QP state")
Signed-off-by: Shiraz Saleem <shirazsaleem@microsoft.com>
Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Link: https://patch.msgid.link/1752143085-4169-1-git-send-email-kotaranov@linux.microsoft.com
Reviewed-by: Long Li <longli@microsoft.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c
index 14fd7d6c54a243ce3c9b1e92f9268c73ed785a10..a6bf4d539e6701996fe5a97d887bb4cd3030e1e8 100644 (file)
--- a/drivers/infiniband/hw/mana/qp.c
+++ b/drivers/infiniband/hw/mana/qp.c
@@ -772,7 +772,7 @@ static int mana_ib_gd_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
                req.ah_attr.dest_port = ROCE_V2_UDP_DPORT;
                req.ah_attr.src_port = rdma_get_udp_sport(attr->ah_attr.grh.flow_label,
                                                          ibqp->qp_num, attr->dest_qp_num);
-               req.ah_attr.traffic_class = attr->ah_attr.grh.traffic_class;
+               req.ah_attr.traffic_class = attr->ah_attr.grh.traffic_class >> 2;
                req.ah_attr.hop_limit = attr->ah_attr.grh.hop_limit;
        }