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luci-lib-ip: add link() method to get basic iface info

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Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
This commit is contained in:
Jo-Philipp Wich 2015-01-23 13:00:51 +01:00
parent 4ab9f972c4
commit 671566d701
1 changed files with 86 additions and 0 deletions
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86
libs/luci-lib-ip/src/ip.c
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@ -1195,6 +1195,90 @@ out:
}
static int cb_dump_link(struct nl_msg *msg, void *arg)
{
char *p, *addr, buf[32];
struct dump_state *s = arg;
struct nlmsghdr *hdr = nlmsg_hdr(msg);
struct ifinfomsg *ifm = NLMSG_DATA(hdr);
struct nlattr *tb[IFLA_MAX+1];
int i;
if (hdr->nlmsg_type != RTM_NEWLINK)
return NL_SKIP;
nlmsg_parse(hdr, sizeof(*ifm), tb, IFLA_MAX, NULL);
L_setbool(s->L, "up", (ifm->ifi_flags & IFF_RUNNING));
L_setint(s->L, "type", ifm->ifi_type);
L_setstr(s->L, "name", if_indextoname(ifm->ifi_index, buf));
if (tb[IFLA_MTU])
L_setint(s->L, "mtu", RTA_U32(tb[IFLA_MTU]));
if (tb[IFLA_TXQLEN])
L_setint(s->L, "qlen", RTA_U32(tb[IFLA_TXQLEN]));
if (tb[IFLA_MASTER])
L_setdev(s->L, "master", tb[IFLA_MASTER]);
if (tb[IFLA_ADDRESS])
{
addr = nla_get_string(tb[IFLA_ADDRESS]);
for (p = buf, i = 0; i < nla_len(tb[IFLA_ADDRESS]); i++)
p += sprintf(p, "%s%02x", (i ? ":" : ""), (uint8_t)*addr++);
L_setstr(s->L, "mac", buf);
}
s->pending = 0;
return NL_SKIP;
}
static int link_get(lua_State *L)
{
const char *dev = luaL_checkstring(L, 1);
struct dump_state st = {
.pending = 1,
.L = L
};
if (!sock)
{
sock = nl_socket_alloc();
if (!sock)
return _error(L, -1, "Out of memory");
if (nl_connect(sock, NETLINK_ROUTE))
return _error(L, 0, NULL);
}
struct nl_msg *msg = nlmsg_alloc_simple(RTM_GETLINK, NLM_F_REQUEST);
struct nl_cb *cb = nl_cb_alloc(NL_CB_DEFAULT);
struct ifinfomsg ifm = { .ifi_index = if_nametoindex(dev) };
if (!msg || !cb)
return 0;
nlmsg_append(msg, &ifm, sizeof(ifm), 0);
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, cb_dump_link, &st);
nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, cb_done, &st);
nl_cb_err(cb, NL_CB_CUSTOM, cb_error, &st);
lua_newtable(L);
nl_send_auto_complete(sock, msg);
nl_recvmsgs(sock, cb);
nlmsg_free(msg);
nl_cb_put(cb);
return 1;
}
static const luaL_reg ip_methods[] = {
{ "new", cidr_new },
{ "IPv4", cidr_ipv4 },
@ -1205,6 +1289,8 @@ static const luaL_reg ip_methods[] = {
{ "neighbors", neighbor_dump },
{ "link", link_get },
{ }
};