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RDMA/rxe: Don't set BTH_ACK_MASK for UC or UD QPs 

[ Upstream commit 4adcaf969d77d3d3aa3871bbadc196258a38aec6 ]

BTH_ACK_MASK bit is used to indicate that an acknowledge
(for this packet) should be scheduled by the responder.
Both UC and UD QPs are unacknowledged, so don't set
BTH_ACK_MASK for UC or UD QPs.

Fixes: 8700e3e7c4 ("Soft RoCE driver")
Signed-off-by: Honggang LI <honggangli@163.com>
Link: https://lore.kernel.org/r/20240624020348.494338-1-honggangli@163.com
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Honggang LI 2024-06-24 10:03:48 +08:00 committed by Greg Kroah-Hartman
parent f79ae071ba
commit 9fbfef061f
1 changed files with 4 additions and 3 deletions
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7
drivers/infiniband/sw/rxe/rxe_req.c
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@ -424,7 +424,7 @@ static struct sk_buff *init_req_packet(struct rxe_qp *qp,
int paylen;
int solicited;
u32 qp_num;
int ack_req;
int ack_req = 0;
/* length from start of bth to end of icrc */
paylen = rxe_opcode[opcode].length + payload + pad + RXE_ICRC_SIZE;
@ -445,8 +445,9 @@ static struct sk_buff *init_req_packet(struct rxe_qp *qp,
qp_num = (pkt->mask & RXE_DETH_MASK) ? ibwr->wr.ud.remote_qpn :
qp->attr.dest_qp_num;
ack_req = ((pkt->mask & RXE_END_MASK) ||
(qp->req.noack_pkts++ > RXE_MAX_PKT_PER_ACK));
if (qp_type(qp) != IB_QPT_UD && qp_type(qp) != IB_QPT_UC)
ack_req = ((pkt->mask & RXE_END_MASK) ||
(qp->req.noack_pkts++ > RXE_MAX_PKT_PER_ACK));
if (ack_req)
qp->req.noack_pkts = 0;