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

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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>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Josef Bacik 2024-01-26 10:39:40 -05:00 committed by Chuck Lever
parent 31e4bb8fb8
commit ab42f4d9a2
1 changed files with 18 additions and 9 deletions
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27
net/sunrpc/svc.c
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@ -1375,7 +1375,8 @@ svc_process_common(struct svc_rqst *rqstp)
goto err_bad_proc;
/* Syntactic check complete */
serv->sv_stats->rpccnt++;
if (serv->sv_stats)
serv->sv_stats->rpccnt++;
trace_svc_process(rqstp, progp->pg_name);
aoffset = xdr_stream_pos(xdr);
@ -1427,7 +1428,8 @@ err_short_len:
goto close_xprt;
err_bad_rpc:
serv->sv_stats->rpcbadfmt++;
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
xdr_stream_encode_u32(xdr, RPC_MSG_DENIED);
xdr_stream_encode_u32(xdr, RPC_MISMATCH);
/* Only RPCv2 supported */
@ -1438,7 +1440,8 @@ err_bad_rpc:
err_bad_auth:
dprintk("svc: authentication failed (%d)\n",
be32_to_cpu(rqstp->rq_auth_stat));
serv->sv_stats->rpcbadauth++;
if (serv->sv_stats)
serv->sv_stats->rpcbadauth++;
/* Restore write pointer to location of reply status: */
xdr_truncate_encode(xdr, XDR_UNIT * 2);
xdr_stream_encode_u32(xdr, RPC_MSG_DENIED);
@ -1448,7 +1451,8 @@ err_bad_auth:
err_bad_prog:
dprintk("svc: unknown program %d\n", rqstp->rq_prog);
serv->sv_stats->rpcbadfmt++;
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
*rqstp->rq_accept_statp = rpc_prog_unavail;
goto sendit;
@ -1456,7 +1460,8 @@ err_bad_vers:
svc_printk(rqstp, "unknown version (%d for prog %d, %s)\n",
rqstp->rq_vers, rqstp->rq_prog, progp->pg_name);
serv->sv_stats->rpcbadfmt++;
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
*rqstp->rq_accept_statp = rpc_prog_mismatch;
/*
@ -1470,19 +1475,22 @@ err_bad_vers:
err_bad_proc:
svc_printk(rqstp, "unknown procedure (%d)\n", rqstp->rq_proc);
serv->sv_stats->rpcbadfmt++;
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
*rqstp->rq_accept_statp = rpc_proc_unavail;
goto sendit;
err_garbage_args:
svc_printk(rqstp, "failed to decode RPC header\n");
serv->sv_stats->rpcbadfmt++;
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
*rqstp->rq_accept_statp = rpc_garbage_args;
goto sendit;
err_system_err:
serv->sv_stats->rpcbadfmt++;
if (serv->sv_stats)
serv->sv_stats->rpcbadfmt++;
*rqstp->rq_accept_statp = rpc_system_err;
goto sendit;
}
@ -1534,7 +1542,8 @@ void svc_process(struct svc_rqst *rqstp)
out_baddir:
svc_printk(rqstp, "bad direction 0x%08x, dropping request\n",
be32_to_cpu(*p));
rqstp->rq_server->sv_stats->rpcbadfmt++;
if (rqstp->rq_server->sv_stats)
rqstp->rq_server->sv_stats->rpcbadfmt++;
out_drop:
svc_drop(rqstp);
}