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sunrpc: don't change ->sv_stats if it doesn't exist

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[ Upstream commit ab42f4d9a26f1723dcfd6c93fcf768032b2bb5e7 ]

We check for the existence of ->sv_stats elsewhere except in the core
processing code.  It appears that only nfsd actual exports these values
anywhere, everybody else just has a write only copy of sv_stats in their
svc_program.  Add a check for ->sv_stats before every adjustment to
allow us to eliminate the stats struct from all the users who don't
report the stats.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
[ cel: adjusted to apply to v5.10.y ]
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Josef Bacik 2024-09-05 11:30:52 -04:00 committed by Ksawlii
parent 01052d8485
commit 6cc74d8021
1 changed files with 16 additions and 8 deletions
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8
net/sunrpc/svc.c
View file

@ -1357,6 +1357,7 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
goto err_bad_proc;
/* Syntactic check complete */
if (serv->sv_stats)
serv->sv_stats->rpccnt++;
trace_svc_process(rqstp, progp->pg_name);
@ -1423,6 +1424,7 @@ err_short_len:
goto close_xprt;
err_bad_rpc:
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
svc_putnl(resv, 1); /* REJECT */
svc_putnl(resv, 0); /* RPC_MISMATCH */
@ -1436,6 +1438,7 @@ err_release_bad_auth:
err_bad_auth:
dprintk("svc: authentication failed (%d)\n",
be32_to_cpu(rqstp->rq_auth_stat));
if (serv->sv_stats)
serv->sv_stats->rpcbadauth++;
/* Restore write pointer to location of accept status: */
xdr_ressize_check(rqstp, reply_statp);
@ -1446,6 +1449,7 @@ err_bad_auth:
err_bad_prog:
dprintk("svc: unknown program %d\n", prog);
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
svc_putnl(resv, RPC_PROG_UNAVAIL);
goto sendit;
@ -1454,6 +1458,7 @@ err_bad_vers:
svc_printk(rqstp, "unknown version (%d for prog %d, %s)\n",
rqstp->rq_vers, rqstp->rq_prog, progp->pg_name);
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
svc_putnl(resv, RPC_PROG_MISMATCH);
svc_putnl(resv, process.mismatch.lovers);
@ -1463,6 +1468,7 @@ err_bad_vers:
err_bad_proc:
svc_printk(rqstp, "unknown procedure (%d)\n", rqstp->rq_proc);
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
svc_putnl(resv, RPC_PROC_UNAVAIL);
goto sendit;
@ -1472,6 +1478,7 @@ err_garbage:
rpc_stat = rpc_garbage_args;
err_bad:
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
svc_putnl(resv, ntohl(rpc_stat));
goto sendit;
@ -1507,6 +1514,7 @@ svc_process(struct svc_rqst *rqstp)
if (dir != 0) {
/* direction != CALL */
svc_printk(rqstp, "bad direction %d, dropping request\n", dir);
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
goto out_drop;
}