Auto merge of #3035 - jreppnow:rtnetlink-ext-filter, r=JohnTitor

Adding RTEXT_FILTER* constants from linux/rtnetlink.h

Adding some constants needed for some specific netlink-route interactions (fetching information on a network interface). They are defined at ```linux/rtnetlink.h```.

Author: bors

libc-test/build.rs

@@ -3476,6 +3476,7 @@ fn test_linux(target: &str) {
                 || name.starts_with("P_")
                 || name.starts_with("PF_")
                 || name.starts_with("RLIMIT_")
+                || name.starts_with("RTEXT_FILTER_")
                 || name.starts_with("SOL_")
                 || name.starts_with("STATX_")
                 || name.starts_with("SW_")
@@ -3490,6 +3491,7 @@ fn test_linux(target: &str) {
         if musl || sparc64 {
             // FIXME: Requires >= 5.4.1 kernel headers
             if name.starts_with("J1939")
+                || name.starts_with("RTEXT_FILTER_")
                 || name.starts_with("SO_J1939")
                 || name.starts_with("SCM_J1939")
             {

libc-test/semver/linux.txt

@@ -2047,6 +2047,13 @@ RTCF_LOG
 RTCF_MASQ
 RTCF_NAT
 RTCF_VALVE
+RTEXT_FILTER_BRVLAN
+RTEXT_FILTER_BRVLAN_COMPRESSED
+RTEXT_FILTER_CFM_CONFIG
+RTEXT_FILTER_CFM_STATUS
+RTEXT_FILTER_MRP
+RTEXT_FILTER_SKIP_STATS
+RTEXT_FILTER_VF
 RTF_ADDRCLASSMASK
 RTF_ADDRCONF
 RTF_ALLONLINK

src/unix/linux_like/linux/mod.rs

@@ -3042,6 +3042,14 @@ pub const ARPD_LOOKUP: ::c_ushort = 0x02;
 pub const ARPD_FLUSH: ::c_ushort = 0x03;
 pub const ATF_MAGIC: ::c_int = 0x80;
 
+pub const RTEXT_FILTER_VF: ::c_int = 1 << 0;
+pub const RTEXT_FILTER_BRVLAN: ::c_int = 1 << 1;
+pub const RTEXT_FILTER_BRVLAN_COMPRESSED: ::c_int = 1 << 2;
+pub const RTEXT_FILTER_SKIP_STATS: ::c_int = 1 << 3;
+pub const RTEXT_FILTER_MRP: ::c_int = 1 << 4;
+pub const RTEXT_FILTER_CFM_CONFIG: ::c_int = 1 << 5;
+pub const RTEXT_FILTER_CFM_STATUS: ::c_int = 1 << 6;
+
 // userspace compat definitions for RTNLGRP_*
 pub const RTMGRP_LINK: ::c_int = 0x00001;
 pub const RTMGRP_NOTIFY: ::c_int = 0x00002;