ip link: Show devices by type
Added new option 'type' to 'ip link show'
command which allows to filter devices by type:
ip link show type bridge
ip link show type vlan
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index a071572..28dfe8c 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -57,6 +57,7 @@
int flushe;
int group;
int master;
+ char *kind;
} filter;
static int do_link;
@@ -189,6 +190,18 @@
fprintf(f, "mode %s ", link_modes[mode]);
}
+static char *parse_link_kind(struct rtattr *tb)
+{
+ struct rtattr *linkinfo[IFLA_INFO_MAX+1];
+
+ parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
+
+ if (linkinfo[IFLA_INFO_KIND])
+ return RTA_DATA(linkinfo[IFLA_INFO_KIND]);
+
+ return "";
+}
+
static void print_linktype(FILE *fp, struct rtattr *tb)
{
struct rtattr *linkinfo[IFLA_INFO_MAX+1];
@@ -551,6 +564,17 @@
else if (filter.master > 0)
return -1;
+ if (filter.kind) {
+ if (tb[IFLA_LINKINFO]) {
+ char *kind = parse_link_kind(tb[IFLA_LINKINFO]);
+
+ if (strcmp(kind, filter.kind))
+ return -1;
+ } else {
+ return -1;
+ }
+ }
+
if (n->nlmsg_type == RTM_DELLINK)
fprintf(fp, "Deleted ");
@@ -1302,6 +1326,9 @@
if (!ifindex)
invarg("Device does not exist\n", *argv);
filter.master = ifindex;
+ } else if (do_link && strcmp(*argv, "type") == 0) {
+ NEXT_ARG();
+ filter.kind = *argv;
} else {
if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();