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-rw-r--r--package/libs/libnl-tiny/src/genl_ctrl.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/package/libs/libnl-tiny/src/genl_ctrl.c b/package/libs/libnl-tiny/src/genl_ctrl.c
index 13016420d1..0045459b2f 100644
--- a/package/libs/libnl-tiny/src/genl_ctrl.c
+++ b/package/libs/libnl-tiny/src/genl_ctrl.c
@@ -45,6 +45,7 @@ static struct nla_policy ctrl_policy[CTRL_ATTR_MAX+1] = {
[CTRL_ATTR_HDRSIZE] = { .type = NLA_U32 },
[CTRL_ATTR_MAXATTR] = { .type = NLA_U32 },
[CTRL_ATTR_OPS] = { .type = NLA_NESTED },
+ [CTRL_ATTR_MCAST_GROUPS] = { .type = NLA_NESTED },
};
static struct nla_policy family_op_policy[CTRL_ATTR_OP_MAX+1] = {
@@ -52,6 +53,11 @@ static struct nla_policy family_op_policy[CTRL_ATTR_OP_MAX+1] = {
[CTRL_ATTR_OP_FLAGS] = { .type = NLA_U32 },
};
+static struct nla_policy family_grp_policy[CTRL_ATTR_MCAST_GRP_MAX+1] = {
+ [CTRL_ATTR_MCAST_GRP_NAME] = { .type = NLA_STRING },
+ [CTRL_ATTR_MCAST_GRP_ID] = { .type = NLA_U32 },
+};
+
static int ctrl_msg_parser(struct nl_cache_ops *ops, struct genl_cmd *cmd,
struct genl_info *info, void *arg)
{
@@ -127,6 +133,40 @@ static int ctrl_msg_parser(struct nl_cache_ops *ops, struct genl_cmd *cmd,
}
}
+ if (info->attrs[CTRL_ATTR_MCAST_GROUPS]) {
+ struct nlattr *nla, *nla_grps;
+ int remaining;
+
+ nla_grps = info->attrs[CTRL_ATTR_MCAST_GROUPS];
+ nla_for_each_nested(nla, nla_grps, remaining) {
+ struct nlattr *tb[CTRL_ATTR_MCAST_GRP_MAX+1];
+ int id;
+ const char * name;
+
+ err = nla_parse_nested(tb, CTRL_ATTR_MCAST_GRP_MAX, nla,
+ family_grp_policy);
+ if (err < 0)
+ goto errout;
+
+ if (tb[CTRL_ATTR_MCAST_GRP_ID] == NULL) {
+ err = -NLE_MISSING_ATTR;
+ goto errout;
+ }
+ id = nla_get_u32(tb[CTRL_ATTR_MCAST_GRP_ID]);
+
+ if (tb[CTRL_ATTR_MCAST_GRP_NAME] == NULL) {
+ err = -NLE_MISSING_ATTR;
+ goto errout;
+ }
+ name = nla_get_string(tb[CTRL_ATTR_MCAST_GRP_NAME]);
+
+ err = genl_family_add_grp(family, id, name);
+ if (err < 0)
+ goto errout;
+ }
+
+ }
+
err = pp->pp_cb((struct nl_object *) family, pp);
errout:
genl_family_put(family);
@@ -242,6 +282,44 @@ errout:
return err;
}
+static int genl_ctrl_grp_by_name(const struct genl_family *family,
+ const char *grp_name)
+{
+ struct genl_family_grp *grp;
+
+ nl_list_for_each_entry(grp, &family->gf_mc_grps, list) {
+ if (!strcmp(grp->name, grp_name)) {
+ return grp->id;
+ }
+ }
+
+ return -NLE_OBJ_NOTFOUND;
+}
+
+int genl_ctrl_resolve_grp(struct nl_sock *sk, const char *family_name,
+ const char *grp_name)
+{
+ struct nl_cache *cache;
+ struct genl_family *family;
+ int err;
+
+ if ((err = genl_ctrl_alloc_cache(sk, &cache)) < 0)
+ return err;
+
+ family = genl_ctrl_search_by_name(cache, family_name);
+ if (family == NULL) {
+ err = -NLE_OBJ_NOTFOUND;
+ goto errout;
+ }
+
+ err = genl_ctrl_grp_by_name(family, grp_name);
+ genl_family_put(family);
+errout:
+ nl_cache_free(cache);
+
+ return err;
+}
+
/** @} */
static struct genl_cmd genl_cmds[] = {