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util: Make sock_l4() treat empty string ifname like NULL
sock_l4() takes NULL for ifname if you don't want to bind the socket to a particular interface. However, for a number of the callers, it's more natural to use an empty string for that case. Change sock_l4() to accept either NULL or an empty string equivalently, and simplify some callers using that change. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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parent
5cada56186
commit
57de44a4bc
3 changed files with 7 additions and 16 deletions
6
udp.c
6
udp.c
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@ -870,8 +870,7 @@ int udp_tap_handler(struct ctx *c, uint8_t pif,
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union udp_epoll_ref uref = { .port = src };
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const char *bind_if = NULL;
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if (!IN6_IS_ADDR_LOOPBACK(&s_in.sin_addr) &&
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*c->ip6.ifname_out)
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if (!IN6_IS_ADDR_LOOPBACK(&s_in.sin_addr))
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bind_if = c->ip6.ifname_out;
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if (!IN4_IS_ADDR_UNSPECIFIED(&c->ip4.addr_out) &&
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@ -919,8 +918,7 @@ int udp_tap_handler(struct ctx *c, uint8_t pif,
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union udp_epoll_ref uref = { .v6 = 1, .port = src };
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const char *bind_if = NULL;
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if (!IN6_IS_ADDR_LOOPBACK(&s_in6.sin6_addr) &&
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*c->ip6.ifname_out)
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if (!IN6_IS_ADDR_LOOPBACK(&s_in6.sin6_addr))
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bind_if = c->ip6.ifname_out;
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if (!IN6_IS_ADDR_UNSPECIFIED(&c->ip6.addr_out) &&
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