Add C code necessary for libuv to work

src/header/netinet_in/cbindgen.toml

@@ -7,7 +7,7 @@ no_includes = true
 cpp_compat = true
 
 [export]
-include = ["sockaddr_in6", "sockaddr_in", "ipv6_mreq"]
+include = ["sockaddr_in6", "sockaddr_in", "ipv6_mreq", "ip_mreq", "ip_mreq_source"]
 
 [enum]
 prefix_with_name = true

src/header/netinet_in/mod.rs

@@ -60,6 +60,20 @@ pub const IPPROTO_IPV6: u8 = 41;
 pub const IPPROTO_RAW: u8 = 0xff;
 pub const IPPROTO_MAX: u8 = 0xff;
 
+pub const IP_TTL: c_int = 2;
+pub const IPV6_UNICAST_HOPS: c_int = 16;
+pub const IPV6_MULTICAST_IF: c_int = 17;
+pub const IPV6_MULTICAST_HOPS: c_int = 18;
+pub const IPV6_MULTICAST_LOOP: c_int = 19;
+pub const IPV6_ADD_MEMBERSHIP: c_int = 20;
+pub const IPV6_DROP_MEMBERSHIP: c_int = 21;
+pub const IPV6_V6ONLY: c_int = 26;
+pub const IP_MULTICAST_IF: c_int = 32;
+pub const IP_MULTICAST_TTL: c_int = 33;
+pub const IP_MULTICAST_LOOP: c_int = 34;
+pub const IP_ADD_MEMBERSHIP: c_int = 35;
+pub const IP_DROP_MEMBERSHIP: c_int = 36;
+
 pub const INADDR_ANY: u32 = 0; // Can't use in_addr_t alias because cbindgen :(
 pub const INADDR_BROADCAST: u32 = 0xFFFF_FFFF; // Can't use core::u32::MAX because cbindgen :(
 pub const INADDR_NONE: u32 = 0xFFFF_FFFF;
@@ -70,6 +84,19 @@ pub const INADDR_ALLHOSTS_GROUP: u32 = 0xE000_0001;
 pub const INADDR_ALLRTRS_GROUP: u32 = 0xE000_0002;
 pub const INADDR_MAX_LOCAL_GROUP: u32 = 0xE000_00FF;
 
+#[repr(C)]
+pub struct ip_mreq_source {
+    pub imr_multiaddr: in_addr,
+    pub imr_interface: in_addr,
+    pub imr_sourceaddr: in_addr,
+}
+
+#[repr(C)]
+pub struct ip_mreq {
+    pub imr_multiaddr: in_addr,
+    pub imr_interface: in_addr,
+}
+
 #[no_mangle]
 pub static in6addr_any: in6_addr = in6_addr {
     s6_addr: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],