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SUNRPC: Prevent SYN+SYNACK+RST storms

Message ID 1440965336-11411-1-git-send-email-trond.myklebust@primarydata.com (mailing list archive)
State New, archived
Headers show

Commit Message

Trond Myklebust Aug. 30, 2015, 8:08 p.m. UTC 
Add a shutdown() call before we release the socket in order to ensure the
reset is sent before we try to reconnect.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---
 net/sunrpc/xprtsock.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 214ca9dfb14e..7be90bc1a7c2 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -822,6 +822,8 @@  static void xs_reset_transport(struct sock_xprt *transport)
 	if (atomic_read(&transport->xprt.swapper))
 		sk_clear_memalloc(sk);
 
+	kernel_sock_shutdown(sock, SHUT_RDWR);
+
 	write_lock_bh(&sk->sk_callback_lock);
 	transport->inet = NULL;
 	transport->sock = NULL;