Commit 1f4c17a0 authored Aug 01, 2016 by Trond Myklebust

SUNRPC: Handle EADDRNOTAVAIL on connection failures



If the connect attempt immediately fails with an EADDRNOTAVAIL error, then
that means our choice of source port number was bad.
This error is expected when we set the SO_REUSEPORT socket option and we
have 2 sockets sharing the same source and destination address and port
combinations.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Fixes: 402e23b4 ("SUNRPC: Fix stupid typo in xs_sock_set_reuseport")
Cc: stable@vger.kernel.org # v4.0+

parent 944171cb

net/sunrpc/xprtsock.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -2295,6 +2295,10 @@ static int xs_tcp_finish_connecting(struct rpc_xprt xprt, struct socket sock)
		/* SYN_SENT! */
		if (xprt->reestablish_timeout < XS_TCP_INIT_REEST_TO)
		xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO;
		break;
		case -EADDRNOTAVAIL:
		/* Source port number is unavailable. Try a new one! */
		transport->srcport = 0;
		}
		out:
		return ret;

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