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authorVincent Bernat <vincent@bernat.im>2018-07-31 22:18:11 +0300
committerDavid S. Miller <davem@davemloft.net>2018-08-01 19:50:04 +0300
commit83ba4645152d1177c161750e1064e3a8e7cee19b (patch)
tree7209c851dda98efb2aa1e7a42ff738d3fe560c38 /net/ipv4/ping.c
parentd39db3b4d60c9bc4282b36753a7255d2a5ef0384 (diff)
downloadlinux-83ba4645152d1177c161750e1064e3a8e7cee19b.tar.xz
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/ipv4/ping.c')
-rw-r--r--net/ipv4/ping.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index b54c964ad925..8d7aaf118a30 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -320,8 +320,7 @@ static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk,
if (addr->sin_addr.s_addr == htonl(INADDR_ANY))
chk_addr_ret = RTN_LOCAL;
- if ((net->ipv4.sysctl_ip_nonlocal_bind == 0 &&
- isk->freebind == 0 && isk->transparent == 0 &&
+ if ((!inet_can_nonlocal_bind(net, isk) &&
chk_addr_ret != RTN_LOCAL) ||
chk_addr_ret == RTN_MULTICAST ||
chk_addr_ret == RTN_BROADCAST)
@@ -361,8 +360,7 @@ static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk,
scoped);
rcu_read_unlock();
- if (!(net->ipv6.sysctl.ip_nonlocal_bind ||
- isk->freebind || isk->transparent || has_addr ||
+ if (!(ipv6_can_nonlocal_bind(net, isk) || has_addr ||
addr_type == IPV6_ADDR_ANY))
return -EADDRNOTAVAIL;