Bug 910990 - prevent from build failure with older version of ethtool in linux. r=abr,ekr,khuey

configure.in

@@ -5228,6 +5228,10 @@ if test -n "$MOZ_WEBRTC"; then
     esac
 fi
 
+AC_TRY_COMPILE([#include <linux/ethtool.h>],
+               [ struct ethtool_cmd cmd; cmd.speed_hi = 0; ],
+               MOZ_WEBRTC_HAVE_ETHTOOL_SPEED_HI=1)
+
 # target_arch is from {ia32|x64|arm|ppc}
 case "$CPU_ARCH" in
 x86_64)
@@ -8978,6 +8982,12 @@ dnl so that regeneration via dependencies works correctly
       WEBRTC_CONFIG="${WEBRTC_CONFIG} -D have_clock_monotonic=0"
    fi
 
+   if test -n "$MOZ_WEBRTC_HAVE_ETHTOOL_SPEED_HI"; then
+      WEBRTC_CONFIG="${WEBRTC_CONFIG} -D have_ethtool_cmd_speed_hi=1"
+   else
+      WEBRTC_CONFIG="${WEBRTC_CONFIG} -D have_ethtool_cmd_speed_hi=0"
+   fi
+
    GYP_WEBRTC_OPTIONS="--format=mozmake ${WEBRTC_CONFIG} -D target_arch=${WEBRTC_TARGET_ARCH} ${EXTRA_GYP_DEFINES} --depth=${srcdir}/media/webrtc/trunk --toplevel-dir=${srcdir} -G OBJDIR=${_objdir}"
 
    $PYTHON ${srcdir}/media/webrtc/trunk/build/gyp_chromium \

media/mtransport/third_party/nICEr/nicer.gyp

@@ -8,6 +8,7 @@
 {
   'variables' : {
     'build_with_gonk%': 0,
+    'have_ethtool_cmd_speed_hi%': 1
   },
   'targets' : [
       {
@@ -235,6 +236,11 @@
                'defines': [
                   "USE_PLATFORM_NR_STUN_GET_ADDRS",
                ]
+             }],
+             ['have_ethtool_cmd_speed_hi==0', {
+               'defines': [
+                  "DONT_HAVE_ETHTOOL_SPEED_HI",
+               ]
              }]
           ],
       }]

media/mtransport/third_party/nICEr/src/stun/addrs.c

@@ -653,7 +653,11 @@ stun_get_siocgifconf_addrs(nr_local_addr addrs[], int maxaddrs, int *count)
              /* For wireless network, we won't get ethtool, it's a wired
                 connection */
              addrs[n].interface.type = NR_INTERFACE_TYPE_WIRED;
+#ifdef DONT_HAVE_ETHTOOL_SPEED_HI
+             addrs[n].interface.estimated_speed = ecmd.speed;
+#else
              addrs[n].interface.estimated_speed = ((ecmd.speed_hi << 16) | ecmd.speed) * 1000;
+#endif
           }
 
           strncpy(wrq.ifr_name, ifr->ifr_name, sizeof(wrq.ifr_name));