[PATCH 5.19 654/717] RDMA/rxe: Delete error messages triggered by incoming Read requests

Greg Kroah-Hartman
2022-10-22T08:57:44Z

From: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>

[ Upstream commit 2c02249fcbfc066bd33e2a7375c7006d4cb367f6 ]

An incoming Read request causes multiple Read responses. If a user MR to
copy data from is unavailable or responder cannot send a reply, then the
error messages can be printed for each response attempt, resulting in
message overflow.

Link: https://lore.kernel.org/r/20220829071218.1639065-1-matsuda-daisuke@fujitsu.com
Signed-off-by: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/sw/rxe/rxe_resp.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c
index e38bf958ab48..2ef21a1cba81 100644
--- a/drivers/infiniband/sw/rxe/rxe_resp.c
+++ b/drivers/infiniband/sw/rxe/rxe_resp.c
@@ -787,10 +787,8 @@ static enum resp_states read_reply(struct rxe_qp *qp,
if (!skb)
return RESPST_ERR_RNR;

- err = rxe_mr_copy(mr, res->read.va, payload_addr(&ack_pkt),
- payload, RXE_FROM_MR_OBJ);
- if (err)
- pr_err("Failed copying memory\n");
+ rxe_mr_copy(mr, res->read.va, payload_addr(&ack_pkt),
+ payload, RXE_FROM_MR_OBJ);
if (mr)
rxe_put(mr);

@@ -801,10 +799,8 @@ static enum resp_states read_reply(struct rxe_qp *qp,
}

err = rxe_xmit_packet(qp, &ack_pkt, skb);
- if (err) {
- pr_err("Failed sending RDMA reply.\n");
+ if (err)
return RESPST_ERR_RNR;
- }

res->read.va += payload;
res->read.resid -= payload;
--
2.35.1