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svcrdma: Pass a useful error code to the send_err tracepoint 

Capture error codes in @ret, which is passed to the send_err
tracepoint, so that they can be logged when something goes awry.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2021-04-11 14:19:08 -04:00
parent c7731d5e05
commit 8727f78855
1 changed files with 9 additions and 3 deletions
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12
net/sunrpc/xprtrdma/svc_rdma_sendto.c
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@ -921,6 +921,7 @@ int svc_rdma_sendto(struct svc_rqst *rqstp)
struct svc_rdma_recv_ctxt *rctxt = rqstp->rq_xprt_ctxt;
__be32 *rdma_argp = rctxt->rc_recv_buf;
struct svc_rdma_send_ctxt *sctxt;
unsigned int rc_size;
__be32 *p;
int ret;
@ -933,6 +934,7 @@ int svc_rdma_sendto(struct svc_rqst *rqstp)
if (!sctxt)
goto drop_connection;
ret = -EMSGSIZE;
p = xdr_reserve_space(&sctxt->sc_stream,
rpcrdma_fixed_maxsz * sizeof(*p));
if (!p)
@ -941,17 +943,21 @@ int svc_rdma_sendto(struct svc_rqst *rqstp)
ret = svc_rdma_send_reply_chunk(rdma, rctxt, &rqstp->rq_res);
if (ret < 0)
goto reply_chunk;
rc_size = ret;
*p++ = *rdma_argp;
*p++ = *(rdma_argp + 1);
*p++ = rdma->sc_fc_credits;
*p = pcl_is_empty(&rctxt->rc_reply_pcl) ? rdma_msg : rdma_nomsg;
if (svc_rdma_encode_read_list(sctxt) < 0)
ret = svc_rdma_encode_read_list(sctxt);
if (ret < 0)
goto put_ctxt;
if (svc_rdma_encode_write_list(rctxt, sctxt) < 0)
ret = svc_rdma_encode_write_list(rctxt, sctxt);
if (ret < 0)
goto put_ctxt;
if (svc_rdma_encode_reply_chunk(rctxt, sctxt, ret) < 0)
ret = svc_rdma_encode_reply_chunk(rctxt, sctxt, rc_size);
if (ret < 0)
goto put_ctxt;
ret = svc_rdma_send_reply_msg(rdma, sctxt, rctxt, rqstp);