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.c... 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 b36ec5c4d5e0..7c336db5cb54 100644 --- a/drivers/infiniband/sw/rxe/rxe_resp.c +++ b/drivers/infiniband/sw/rxe/rxe_resp.c @@ -809,10 +809,8 @@ 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);
@@ -823,10 +821,8 @@ 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;