We go to some trouble, if the configured output address is unspecified, to
pass NULL to sock_l4(). But while passing NULL is one way to get sock_l4()
not to specify a bind address, passing the "any" address explicitly works
too. Use this to simplify icmp_tap_handler().
Signed-off-by: David Gibson <david(a)gibson.dropbear.id.au>
---
icmp.c | 16 ++++------------
1 file changed, 4 insertions(+), 12 deletions(-)
diff --git a/icmp.c b/icmp.c
index 2a15d25..d982fda 100644
--- a/icmp.c
+++ b/icmp.c
@@ -187,16 +187,12 @@ int icmp_tap_handler(const struct ctx *c, uint8_t pif, int af,
iref.id = id = ntohs(ih->un.echo.id);
if ((s = icmp_id_map[V4][id].sock) <= 0) {
- const struct in_addr *bind_addr = NULL;
const char *bind_if;
bind_if = *c->ip4.ifname_out ? c->ip4.ifname_out : NULL;
- if (!IN4_IS_ADDR_UNSPECIFIED(&c->ip4.addr_out))
- bind_addr = &c->ip4.addr_out;
-
- s = sock_l4(c, AF_INET, IPPROTO_ICMP, bind_addr,
- bind_if, id, iref.u32);
+ s = sock_l4(c, AF_INET, IPPROTO_ICMP,
+ &c->ip4.addr_out, bind_if, id, iref.u32);
if (s < 0)
goto fail_sock;
if (s > FD_REF_MAX) {
@@ -241,16 +237,12 @@ int icmp_tap_handler(const struct ctx *c, uint8_t pif, int af,
iref.id = id = ntohs(ih->icmp6_identifier);
if ((s = icmp_id_map[V6][id].sock) <= 0) {
- const struct in6_addr *bind_addr = NULL;
const char *bind_if;
bind_if = *c->ip6.ifname_out ? c->ip6.ifname_out : NULL;
- if (!IN6_IS_ADDR_UNSPECIFIED(&c->ip6.addr_out))
- bind_addr = &c->ip6.addr_out;
-
- s = sock_l4(c, AF_INET6, IPPROTO_ICMPV6, bind_addr,
- bind_if, id, iref.u32);
+ s = sock_l4(c, AF_INET6, IPPROTO_ICMPV6,
+ &c->ip6.addr_out, bind_if, id, iref.u32);
if (s < 0)
goto fail_sock;
if (s > FD_REF_MAX) {
--
2.43.0