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-rw-r--r--net/sunrpc/svc.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index f4a509a925b..b252401c860 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -919,3 +919,18 @@ err_bad:
svc_putnl(resv, ntohl(rpc_stat));
goto sendit;
}
+
+/*
+ * Return (transport-specific) limit on the rpc payload.
+ */
+u32 svc_max_payload(const struct svc_rqst *rqstp)
+{
+ int max = RPCSVC_MAXPAYLOAD_TCP;
+
+ if (rqstp->rq_sock->sk_sock->type == SOCK_DGRAM)
+ max = RPCSVC_MAXPAYLOAD_UDP;
+ if (rqstp->rq_server->sv_bufsz < max)
+ max = rqstp->rq_server->sv_bufsz;
+ return max;
+}
+EXPORT_SYMBOL_GPL(svc_max_payload);