@@ -760,149 +760,6 @@ struct ether_addr *resolve_mac(const char *asc)
return mac_result;
}
-struct vlan_get_link_nl_arg {
- char *iface;
- int vid;
-};
-
-static struct nla_policy info_data_link_policy[IFLA_MAX + 1] = {
- [IFLA_LINKINFO] = { .type = NLA_NESTED },
- [IFLA_LINK] = { .type = NLA_U32 },
-};
-
-static struct nla_policy info_data_link_info_policy[IFLA_INFO_MAX + 1] = {
- [IFLA_INFO_DATA] = { .type = NLA_NESTED },
-};
-
-static struct nla_policy vlan_policy[IFLA_VLAN_MAX + 1] = {
- [IFLA_VLAN_ID] = { .type = NLA_U16 },
-};
-
-/**
- * vlan_get_link_parse - parse a get_link rtnl message and extract the important
- * data
- * @msg: the reply msg
- * @arg: pointer to the buffer which will store the return values
- *
- * Saves the vid in arg::vid in case of success or -1 otherwise
- */
-static int vlan_get_link_parse(struct nl_msg *msg, void *arg)
-{
- struct vlan_get_link_nl_arg *nl_arg = arg;
- struct nlmsghdr *n = nlmsg_hdr(msg);
- struct nlattr *tb[IFLA_MAX + 1];
- struct nlattr *li[IFLA_INFO_MAX + 1];
- struct nlattr *vi[IFLA_VLAN_MAX + 1];
- int ret;
- int idx;
-
- if (!nlmsg_valid_hdr(n, sizeof(struct ifinfomsg)))
- return -NLE_MSG_TOOSHORT;
-
- ret = nlmsg_parse(n, sizeof(struct ifinfomsg), tb, IFLA_MAX,
- info_data_link_policy);
- if (ret < 0)
- return ret;
-
- if (!tb[IFLA_LINK])
- return -NLE_MISSING_ATTR;
-
- /* parse subattributes linkinfo */
- if (!tb[IFLA_LINKINFO])
- return -NLE_MISSING_ATTR;
-
- ret = nla_parse_nested(li, IFLA_INFO_MAX, tb[IFLA_LINKINFO],
- info_data_link_info_policy);
- if (ret < 0)
- return ret;
-
- if (!li[IFLA_INFO_KIND])
- return -NLE_MISSING_ATTR;
-
- if (strcmp(nla_data(li[IFLA_INFO_KIND]), "vlan") != 0)
- goto err;
-
- /* parse subattributes info_data for vlan */
- if (!li[IFLA_INFO_DATA])
- return -NLE_MISSING_ATTR;
-
- ret = nla_parse_nested(vi, IFLA_VLAN_MAX, li[IFLA_INFO_DATA],
- vlan_policy);
- if (ret < 0)
- return ret;
-
- if (!vi[IFLA_VLAN_ID])
- return -NLE_MISSING_ATTR;
-
- /* get parent link name */
- idx = *(int *)nla_data(tb[IFLA_LINK]);
-
- if (!if_indextoname(idx, nl_arg->iface))
- goto err;
-
- /* get the corresponding vid */
- nl_arg->vid = *(int *)nla_data(vi[IFLA_VLAN_ID]);
-
-err:
- if (nl_arg->vid >= 0)
- return NL_STOP;
- else
- return NL_OK;
-}
-
-/**
- * vlan_get_link - convert a VLAN interface into its parent one
- * @ifname: the interface to convert
- * @parent: buffer where the parent interface name will be written
- * (minimum IF_NAMESIZE)
- *
- * Returns the vlan identifier on success or -1 on error
- */
-static int vlan_get_link(const char *ifname, char *parent)
-{
- struct nl_sock *sock;
- int ret;
- struct ifinfomsg ifinfo = {
- .ifi_family = AF_UNSPEC,
- .ifi_index = if_nametoindex(ifname),
- };
- struct nl_cb *cb = NULL;
- struct vlan_get_link_nl_arg arg = {
- .iface = parent,
- .vid = -1,
- };
-
- sock = nl_socket_alloc();
- if (!sock)
- goto err;
-
- ret = nl_connect(sock, NETLINK_ROUTE);
- if (ret < 0)
- goto err;
-
- ret = nl_send_simple(sock, RTM_GETLINK, NLM_F_REQUEST,
- &ifinfo, sizeof(ifinfo));
- if (ret < 0)
- goto err;
-
- cb = nl_cb_alloc(NL_CB_DEFAULT);
- if (!cb)
- goto err;
-
- nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, vlan_get_link_parse, &arg);
- ret = nl_recvmsgs(sock, cb);
- if (ret < 0)
- goto err;
-
-err:
- if (cb)
- nl_cb_put(cb);
- if (sock)
- nl_socket_free(sock);
-
- return arg.vid;
-}
-
int query_rtnl_link(int ifindex, nl_recvmsg_msg_cb_t func, void *arg)
{
struct ifinfomsg rt_hdr = {
@@ -1025,25 +882,15 @@ int netlink_simple_request(struct nl_msg *msg)
return err;
}
-int translate_mesh_iface(struct state *state)
-{
- state->vid = vlan_get_link(state->arg_iface, state->mesh_iface);
- if (state->vid < 0) {
- /* if there is no iface then the argument must be the
- * mesh interface
- */
- snprintf(state->mesh_iface, sizeof(state->mesh_iface), "%s",
- state->arg_iface);
- }
-
- return 0;
-}
-
struct rtnl_link_iface_data {
uint8_t kind_found:1;
uint8_t master_found:1;
+ uint8_t link_found:1;
+ uint8_t vid_found:1;
char kind[IF_NAMESIZE];
unsigned int master;
+ unsigned int link;
+ uint16_t vid;
};
static int query_rtnl_link_single_parse(struct nl_msg *msg, void *arg)
@@ -1051,13 +898,19 @@ static int query_rtnl_link_single_parse(struct nl_msg *msg, void *arg)
static struct nla_policy link_policy[IFLA_MAX + 1] = {
[IFLA_LINKINFO] = { .type = NLA_NESTED },
[IFLA_MASTER] = { .type = NLA_U32 },
+ [IFLA_LINK] = { .type = NLA_U32 },
};
static struct nla_policy link_info_policy[IFLA_INFO_MAX + 1] = {
[IFLA_INFO_KIND] = { .type = NLA_STRING },
+ [IFLA_INFO_DATA] = { .type = NLA_NESTED },
+ };
+ static struct nla_policy vlan_policy[IFLA_VLAN_MAX + 1] = {
+ [IFLA_VLAN_ID] = { .type = NLA_U16 },
};
struct rtnl_link_iface_data *link_data = arg;
struct nlattr *li[IFLA_INFO_MAX + 1];
+ struct nlattr *vi[IFLA_VLAN_MAX + 1];
struct nlmsghdr *n = nlmsg_hdr(msg);
struct nlattr *tb[IFLA_MAX + 1];
char *type;
@@ -1076,6 +929,11 @@ static int query_rtnl_link_single_parse(struct nl_msg *msg, void *arg)
link_data->master_found = true;
}
+ if (tb[IFLA_LINK]) {
+ link_data->link = nla_get_u32(tb[IFLA_LINK]);
+ link_data->link_found = true;
+ }
+
/* parse subattributes linkinfo */
if (!tb[IFLA_LINKINFO])
return NL_OK;
@@ -1093,6 +951,19 @@ static int query_rtnl_link_single_parse(struct nl_msg *msg, void *arg)
link_data->kind_found = true;
}
+ if (!li[IFLA_INFO_DATA])
+ return NL_OK;
+
+ ret = nla_parse_nested(vi, IFLA_VLAN_MAX, li[IFLA_INFO_DATA],
+ vlan_policy);
+ if (ret < 0)
+ return NL_OK;
+
+ if (vi[IFLA_VLAN_ID]) {
+ link_data->vid = nla_get_u16(vi[IFLA_VLAN_ID]);
+ link_data->vid_found = true;
+ }
+
return NL_STOP;
}
@@ -1109,6 +980,8 @@ static int query_rtnl_link_single(int mesh_ifindex,
link_data->kind_found = false;
link_data->master_found = false;
+ link_data->link_found = false;
+ link_data->vid_found = false;
sock = nl_socket_alloc();
if (!sock)
@@ -1138,7 +1011,47 @@ static int query_rtnl_link_single(int mesh_ifindex,
return 0;
}
-int check_mesh_iface_netlink(struct state *state)
+int translate_mesh_iface(struct state *state)
+{
+ struct rtnl_link_iface_data link_data;
+ unsigned int arg_ifindex;
+
+ arg_ifindex = if_nametoindex(state->arg_iface);
+ if (arg_ifindex == 0)
+ goto fallback_meshif;
+
+ query_rtnl_link_single(arg_ifindex, &link_data);
+ if (!link_data.vid_found)
+ goto fallback_meshif;
+
+ if (!link_data.link_found)
+ goto fallback_meshif;
+
+ if (!link_data.kind_found)
+ goto fallback_meshif;
+
+ if (strcmp(link_data.kind, "vlan") != 0)
+ goto fallback_meshif;
+
+ if (!if_indextoname(link_data.link, state->mesh_iface))
+ goto fallback_meshif;
+
+ state->vid = link_data.vid;
+
+ return 0;
+
+fallback_meshif:
+ /* if there is no vid then the argument must be the
+ * mesh interface
+ */
+ snprintf(state->mesh_iface, sizeof(state->mesh_iface), "%s",
+ state->arg_iface);
+ state->vid = -1;
+
+ return 0;
+}
+
+static int check_mesh_iface_netlink(struct state *state)
{
struct rtnl_link_iface_data link_data;