4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Honggang LI honggangli@163.com
[ 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: 8700e3e7c485 ("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 --- drivers/infiniband/sw/rxe/rxe_req.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/sw/rxe/rxe_req.c b/drivers/infiniband/sw/rxe/rxe_req.c index 4008ab2da0526..aa57a9cb53886 100644 --- a/drivers/infiniband/sw/rxe/rxe_req.c +++ b/drivers/infiniband/sw/rxe/rxe_req.c @@ -390,7 +390,7 @@ static struct sk_buff *init_req_packet(struct rxe_qp *qp, int solicited; u16 pkey; 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; @@ -426,8 +426,9 @@ 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;