ss: Identify more netlink protocol names
There were only few Netlink protocol names
which were printed on the screen:
rtnl, fw, tcpdiag
So added the ability to identify Netlink proto name
from /etc/iproute/nl_protos or from static table.
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
diff --git a/lib/rt_names.c b/lib/rt_names.c
index 911e4d2..184f590 100644
--- a/lib/rt_names.c
+++ b/lib/rt_names.c
@@ -525,3 +525,85 @@
snprintf(buf, len, "%d", id);
return buf;
}
+
+static char *nl_proto_tab[256] = {
+ [NETLINK_ROUTE] = "rtnl",
+ [NETLINK_UNUSED] = "unused",
+ [NETLINK_USERSOCK] = "usersock",
+ [NETLINK_FIREWALL] = "fw",
+ [NETLINK_SOCK_DIAG] = "tcpdiag",
+ [NETLINK_NFLOG] = "nflog",
+ [NETLINK_XFRM] = "xfrm",
+ [NETLINK_SELINUX] = "selinux",
+ [NETLINK_ISCSI] = "iscsi",
+ [NETLINK_AUDIT] = "audit",
+ [NETLINK_FIB_LOOKUP] = "fiblookup",
+ [NETLINK_CONNECTOR] = "connector",
+ [NETLINK_NETFILTER] = "nft",
+ [NETLINK_IP6_FW] = "ip6fw",
+ [NETLINK_DNRTMSG] = "dec-rt",
+ [NETLINK_KOBJECT_UEVENT] = "uevent",
+ [NETLINK_GENERIC] = "genl",
+ [NETLINK_SCSITRANSPORT] = "scsi-trans",
+ [NETLINK_ECRYPTFS] = "ecryptfs",
+ [NETLINK_RDMA] = "rdma",
+ [NETLINK_CRYPTO] = "crypto",
+};
+
+static int nl_proto_init;
+
+static void nl_proto_initialize(void)
+{
+ nl_proto_init = 1;
+ rtnl_tab_initialize(CONFDIR "/nl_protos",
+ nl_proto_tab, 256);
+}
+
+const char *nl_proto_n2a(int id, char *buf, int len)
+{
+ if (id < 0 || id >= 256) {
+ snprintf(buf, len, "%u", id);
+ return buf;
+ }
+
+ if (!nl_proto_init)
+ nl_proto_initialize();
+
+ if (nl_proto_tab[id])
+ return nl_proto_tab[id];
+
+ snprintf(buf, len, "%u", id);
+ return buf;
+}
+
+int nl_proto_a2n(__u32 *id, const char *arg)
+{
+ static char *cache = NULL;
+ static unsigned long res;
+ char *end;
+ int i;
+
+ if (cache && strcmp(cache, arg) == 0) {
+ *id = res;
+ return 0;
+ }
+
+ if (!nl_proto_init)
+ nl_proto_initialize();
+
+ for (i = 0; i < 256; i++) {
+ if (nl_proto_tab[i] &&
+ strcmp(nl_proto_tab[i], arg) == 0) {
+ cache = nl_proto_tab[i];
+ res = i;
+ *id = res;
+ return 0;
+ }
+ }
+
+ res = strtoul(arg, &end, 0);
+ if (!end || end == arg || *end || res > 255)
+ return -1;
+ *id = res;
+ return 0;
+}