From cdac4e07748934e37e415437055ed591aed9eb21 Mon Sep 17 00:00:00 2001
From: Neil Horman <nhorman@redhat.com>
Date: Mon, 13 Jun 2005 15:12:33 -0700
Subject: [PATCH] [SCTP] Add support for ip_nonlocal_bind sysctl & IP_FREEBIND
socket option
Signed-off-by: Neil Horman <nhorman@redhat.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
include/net/ip.h | 1 +
net/ipv4/af_inet.c | 1 +
net/sctp/protocol.c | 7 +++++--
3 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/include/net/ip.h b/include/net/ip.h
index 3f63992eb7129..32360bbe143fa 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -163,6 +163,7 @@ DECLARE_SNMP_STAT(struct linux_mib, net_statistics);
extern int sysctl_local_port_range[2];
extern int sysctl_ip_default_ttl;
+extern int sysctl_ip_nonlocal_bind;
#ifdef CONFIG_INET
/* The function in 2.2 was invalid, producing wrong result for
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index b3cb49ce5fad4..03942f1339447 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1181,6 +1181,7 @@ EXPORT_SYMBOL(inet_stream_connect);
EXPORT_SYMBOL(inet_stream_ops);
EXPORT_SYMBOL(inet_unregister_protosw);
EXPORT_SYMBOL(net_statistics);
+EXPORT_SYMBOL(sysctl_ip_nonlocal_bind);
#ifdef INET_REFCNT_DEBUG
EXPORT_SYMBOL(inet_sock_nr);
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 2e1f9c3556f59..5135e1a25d25c 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -378,10 +378,13 @@ static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp)
{
int ret = inet_addr_type(addr->v4.sin_addr.s_addr);
- /* FIXME: ip_nonlocal_bind sysctl support. */
- if (addr->v4.sin_addr.s_addr != INADDR_ANY && ret != RTN_LOCAL)
+ if (addr->v4.sin_addr.s_addr != INADDR_ANY &&
+ ret != RTN_LOCAL &&
+ !sp->inet.freebind &&
+ !sysctl_ip_nonlocal_bind)
return 0;
+
return 1;
}
--
2.30.2