ADHOC/replicant-frameworks_native
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Improve network connectivity dumping.

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1. Explicitly dump IP addresses.

   Currently, some IP addresses are dumped using netcfg, but that
   only dumps the first IPv4 address on each interface. Instead,
   call ip -4 addr and ip -6 addr explicitly to dump all IPv4 and
   IPv6 addresses on the system.

2. Disable dumping /proc/net/{ipv6,}route, because:

 - We already dump all IPv4 and IPv6 routes in the tables that
   we use.
 - /proc/net/route is confusing because it only includes routes
   in the main table, which are all but unused. It's also in
   unreadable host-byte-order hex.
 - /proc/net/ipv6_route is confusing because it includes routes
   from all tables but does not say what table they are in.

3. Instead of dumping the contents of /proc/net/arp , use
   "ip -4 neigh show" and "ip -6 neigh show" to dump the
   neighbour caches for both IPv4 and IPv6.

Bug: 16663736
Change-Id: Id3e509b877ab7b00eb2399b6a9868b12245da2f0
This commit is contained in:
Lorenzo Colitti 2014-07-30 14:38:20 +09:00
parent 9ae79d869a
commit d4c3d38957
1 changed files with 7 additions and 4 deletions
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11
cmds/dumpstate/dumpstate.c
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@ -205,9 +205,6 @@ static void dumpstate() {
dump_file("QTAGUID CTRL INFO", "/proc/net/xt_qtaguid/ctrl");
dump_file("QTAGUID STATS INFO", "/proc/net/xt_qtaguid/stats");
dump_file("NETWORK ROUTES", "/proc/net/route");
dump_file("NETWORK ROUTES IPV6", "/proc/net/ipv6_route");
if (!stat(PSTORE_LAST_KMSG, &st)) {
/* Also TODO: Make console-ramoops CAP_SYSLOG protected. */
dump_file("LAST KMSG", PSTORE_LAST_KMSG);
@ -223,12 +220,18 @@ static void dumpstate() {
/* The following have a tendency to get wedged when wifi drivers/fw goes belly-up. */
run_command("NETWORK INTERFACES", 10, SU_PATH, "root", "netcfg", NULL);
run_command("IPv4 ADDRESSES", 10, "ip", "-4", "addr", "show", NULL);
run_command("IPv6 ADDRESSES", 10, "ip", "-6", "addr", "show", NULL);
run_command("IP RULES", 10, "ip", "rule", "show", NULL);
run_command("IP RULES v6", 10, "ip", "-6", "rule", "show", NULL);
dump_route_tables();
dump_file("ARP CACHE", "/proc/net/arp");
run_command("ARP CACHE", 10, "ip", "-4", "neigh", "show", NULL);
run_command("IPv6 ND CACHE", 10, "ip", "-6", "neigh", "show", NULL);
run_command("IPTABLES", 10, SU_PATH, "root", "iptables", "-L", "-nvx", NULL);
run_command("IP6TABLES", 10, SU_PATH, "root", "ip6tables", "-L", "-nvx", NULL);
run_command("IPTABLE NAT", 10, SU_PATH, "root", "iptables", "-t", "nat", "-L", "-nvx", NULL);