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cifs: smbd: disconnect transport on RDMA errors 

On RDMA errors, transport should disconnect the RDMA CM connection. This
will notify the upper layer, and it will attempt transport reconnect.

Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
CC: Stable <stable@vger.kernel.org>
This commit is contained in:
Long Li 2018-03-30 15:16:36 -07:00 committed by Steve French
parent 48f238a79f
commit 21a4e14aae
1 changed files with 6 additions and 1 deletions
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7
fs/cifs/smbdirect.c
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@ -862,6 +862,8 @@ static int smbd_post_send_negotiate_req(struct smbd_connection *info)
ib_dma_unmap_single(info->id->device, request->sge[0].addr,
request->sge[0].length, DMA_TO_DEVICE);
smbd_disconnect_rdma_connection(info);
dma_mapping_failed:
mempool_free(request, info->request_mempool);
return rc;
@ -1061,6 +1063,7 @@ static int smbd_post_send(struct smbd_connection *info,
if (atomic_dec_and_test(&info->send_pending))
wake_up(&info->wait_send_pending);
}
smbd_disconnect_rdma_connection(info);
} else
/* Reset timer for idle connection after packet is sent */
mod_delayed_work(info->workqueue, &info->idle_timer_work,
@ -1202,7 +1205,7 @@ static int smbd_post_recv(
if (rc) {
ib_dma_unmap_single(info->id->device, response->sge.addr,
response->sge.length, DMA_FROM_DEVICE);
smbd_disconnect_rdma_connection(info);
log_rdma_recv(ERR, "ib_post_recv failed rc=%d\n", rc);
}
@ -2546,6 +2549,8 @@ dma_map_error:
if (atomic_dec_and_test(&info->mr_used_count))
wake_up(&info->wait_for_mr_cleanup);
smbd_disconnect_rdma_connection(info);
return NULL;
}