[PATCH] knfsd: Prepare knfsd for support of rsize/wsize of up to 1MB, over TCP

[safe/jmp/linux-2.6] / net / sunrpc / svc.c

diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index f4a509a..b252401 100644 (file)
--- 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);