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IB/mlx4: Put priority bits in WQE of IBoE MLX QP

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Otherwise CM packets going over MLX QP1 get fixed scheduling priority 0.
We want CM packets to get the same scheduling priority, and therefore
map to the same SQ (Schedule Queue) and eventually TC (Traffic Class),
as the application requested for the actual QP used for the connection.

Signed-off-by: Oren Duer <oren@mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Oren Duer 2012-04-29 17:04:24 +03:00 committed by Roland Dreier
parent d48b97b403
commit c0c1d3d761
2 changed files with 5 additions and 4 deletions
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6
drivers/infiniband/hw/mlx4/qp.c
View file

@ -1424,6 +1424,9 @@ static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_send_wr *wr,
if (is_eth) {
u8 *smac;
u16 pcp = (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 29) << 13;
mlx->sched_prio = cpu_to_be16(pcp);
memcpy(sqp->ud_header.eth.dmac_h, ah->av.eth.mac, 6);
/* FIXME: cache smac value? */
@ -1434,10 +1437,7 @@ static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_send_wr *wr,
if (!is_vlan) {
sqp->ud_header.eth.type = cpu_to_be16(MLX4_IB_IBOE_ETHERTYPE);
} else {
u16 pcp;
sqp->ud_header.vlan.type = cpu_to_be16(MLX4_IB_IBOE_ETHERTYPE);
pcp = (be32_to_cpu(ah->av.ib.sl_tclass_flowlabel) >> 29) << 13;
sqp->ud_header.vlan.tag = cpu_to_be16(vlan | pcp);
}
} else {

3
include/linux/mlx4/qp.h
View file

@ -233,7 +233,8 @@ struct mlx4_wqe_mlx_seg {
u8 owner;
u8 reserved1[2];
u8 opcode;
u8 reserved2[3];
__be16 sched_prio;
u8 reserved2;
u8 size;
/*
* [17] VL15