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authorVincent Bernat <vincent@bernat.im>2018-07-31 21:18:11 +0200
committerDavid S. Miller <davem@davemloft.net>2018-08-01 09:50:04 -0700
commit83ba4645152d1177c161750e1064e3a8e7cee19b (patch)
tree7209c851dda98efb2aa1e7a42ff738d3fe560c38 /net/ipv6
parentd39db3b4d60c9bc4282b36753a7255d2a5ef0384 (diff)
downloadlinux-83ba4645152d1177c161750e1064e3a8e7cee19b.tar.bz2
net: add helpers checking if socket can be bound to nonlocal address
The construction "net->ipv4.sysctl_ip_nonlocal_bind || inet->freebind || inet->transparent" is present three times and its IPv6 counterpart is also present three times. We introduce two small helpers to characterize these tests uniformly. Signed-off-by: Vincent Bernat <vincent@bernat.im> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/af_inet6.c6
-rw-r--r--net/ipv6/datagram.c3
2 files changed, 3 insertions, 6 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index c9535354149f..020f6e14a7af 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -322,8 +322,7 @@ static int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
/* Reproduce AF_INET checks to make the bindings consistent */
v4addr = addr->sin6_addr.s6_addr32[3];
chk_addr_ret = inet_addr_type(net, v4addr);
- if (!net->ipv4.sysctl_ip_nonlocal_bind &&
- !(inet->freebind || inet->transparent) &&
+ if (!inet_can_nonlocal_bind(net, inet) &&
v4addr != htonl(INADDR_ANY) &&
chk_addr_ret != RTN_LOCAL &&
chk_addr_ret != RTN_MULTICAST &&
@@ -362,8 +361,7 @@ static int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
*/
v4addr = LOOPBACK4_IPV6;
if (!(addr_type & IPV6_ADDR_MULTICAST)) {
- if (!net->ipv6.sysctl.ip_nonlocal_bind &&
- !(inet->freebind || inet->transparent) &&
+ if (!ipv6_can_nonlocal_bind(net, inet) &&
!ipv6_chk_addr(net, &addr->sin6_addr,
dev, 0)) {
err = -EADDRNOTAVAIL;
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index f0264dfd38de..1ede7a16a0be 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -803,8 +803,7 @@ int ip6_datagram_send_ctl(struct net *net, struct sock *sk,
if (addr_type != IPV6_ADDR_ANY) {
int strict = __ipv6_addr_src_scope(addr_type) <= IPV6_ADDR_SCOPE_LINKLOCAL;
- if (!(net->ipv6.sysctl.ip_nonlocal_bind ||
- inet_sk(sk)->freebind || inet_sk(sk)->transparent) &&
+ if (!ipv6_can_nonlocal_bind(net, inet_sk(sk)) &&
!ipv6_chk_addr_and_flags(net, &src_info->ipi6_addr,
dev, !strict, 0,
IFA_F_TENTATIVE) &&