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RDMA/rxe: Make responder handle RDMA Read failures

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Currently, responder can reply packets with invalid payloads if it fails
to copy messages to the packets. Add an error handling in read_reply() to
inform a requesting node of the failure.

Link: https://lore.kernel.org/r/20221013014724.3786212-1-matsuda-daisuke@fujitsu.com
Suggested-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Daisuke Matsuda
2022-10-13 10:47:23 +09:00
committed by Leon Romanovsky
parent 71d2363991
commit 5ebc548f4f
1 changed files with 6 additions and 2 deletions
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drivers/infiniband/sw/rxe/rxe_resp.c
+6 -2
View File
@@ -809,10 +809,14 @@ static enum resp_states read_reply(struct rxe_qp *qp,
if (!skb)
return RESPST_ERR_RNR;
rxe_mr_copy(mr, res->read.va, payload_addr(&ack_pkt),
payload, RXE_FROM_MR_OBJ);
err = rxe_mr_copy(mr, res->read.va, payload_addr(&ack_pkt),
payload, RXE_FROM_MR_OBJ);
if (mr)
rxe_put(mr);
if (err) {
kfree_skb(skb);
return RESPST_ERR_RKEY_VIOLATION;
}
if (bth_pad(&ack_pkt)) {
u8 *pad = payload_addr(&ack_pkt) + payload;