[PATCH v1] SUNRPC: Improve "fragment too large" warning

[Chuck Lever <cel@kernel.org>]

From: Chuck Lever <chuck.lever@oracle.com>

Including the client IP address that generated the overrun traffic
seems like it would be helpful. The message now reads:

  kernel: svc: nfsd oversized RPC fragment (1064958 octets) from 100.64.0.11:45866

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 net/sunrpc/svcsock.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 7b90abc5cf0e..0cb9c4d45745 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -1062,9 +1062,10 @@ static ssize_t svc_tcp_read_marker(struct svc_sock *svsk,
 	return svc_sock_reclen(svsk);
 
 err_too_large:
-	net_notice_ratelimited("svc: %s %s RPC fragment too large: %d\n",
-			       __func__, svsk->sk_xprt.xpt_server->sv_name,
-			       svc_sock_reclen(svsk));
+	net_notice_ratelimited("svc: %s oversized RPC fragment (%u octets) from %pISpc\n",
+			       svsk->sk_xprt.xpt_server->sv_name,
+			       svc_sock_reclen(svsk),
+			       (struct sockaddr *)&svsk->sk_xprt.xpt_remote);
 	svc_xprt_deferred_close(&svsk->sk_xprt);
 err_short:
 	return -EAGAIN;
-- 
2.51.0