Add the TCP_FUNCTION_BLK and TCP_FUNCTION_ALIAS socket options

For FreeBSD only

Author: asomers

libc-test/semver/freebsd.txt

@@ -1510,6 +1510,8 @@ TCP_DELACK
 TCP_FASTOPEN
 TCP_FASTOPEN_PSK_LEN
 TCP_FIN_IS_RST
+TCP_FUNCTION_ALIAS
+TCP_FUNCTION_BLK
 TCP_FUNCTION_NAME_LEN_MAX
 TCP_IDLE_REDUCE
 TCP_INFO

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -3827,6 +3827,8 @@ pub const TCP_KEEPINIT: ::c_int = 128;
 pub const TCP_FASTOPEN: ::c_int = 1025;
 pub const TCP_PCAP_OUT: ::c_int = 2048;
 pub const TCP_PCAP_IN: ::c_int = 4096;
+pub const TCP_FUNCTION_BLK: ::c_int = 8192;
+pub const TCP_FUNCTION_ALIAS: ::c_int = 8193;
 pub const TCP_FASTOPEN_PSK_LEN: ::c_int = 16;
 pub const TCP_FUNCTION_NAME_LEN_MAX: ::c_int = 32;