Use SO_REUSEADDR and SO_REUSEPORT when reconnecting NFS mounts.

Tune the timeout from 5 seconds to 12 seconds.
Provide a sysctl to show how many reconnects the NFS client has done.

Seems to fix IPv6 from: kuriyama

1 files changed, 19 insertions, 0 deletions

diff --git a/sys/kern/uipc_socket.c b/sys/kern/uipc_socket.c
index f3a0108..6787573 100644
--- a/sys/kern/uipc_socket.c
+++ b/sys/kern/uipc_socket.c
@@ -1541,6 +1541,25 @@ sooptcopyin(sopt, buf, len, minlen)
 	return 0;
 }
 
+/*
+ * Kernel version of setsockopt(2)/
+ * XXX: optlen is size_t, not socklen_t
+ */
+int
+kern_setsockopt(struct socket *so, int level, int optname, void *optval,
+    size_t optlen)
+{
+	struct sockopt sopt;
+
+	sopt.sopt_level = level;
+	sopt.sopt_name = optname;
+	sopt.sopt_dir = SOPT_SET;
+	sopt.sopt_val = optval;
+	sopt.sopt_valsize = optlen;
+	sopt.sopt_td = NULL;
+	return (sosetopt(so, &sopt));
+}
+
 int
 sosetopt(so, sopt)
 	struct socket *so;