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-rw-r--r--src/ap/vlan_full.c752
1 files changed, 752 insertions, 0 deletions
diff --git a/src/ap/vlan_full.c b/src/ap/vlan_full.c
new file mode 100644
index 0000000..e9512fe
--- /dev/null
+++ b/src/ap/vlan_full.c
@@ -0,0 +1,752 @@
+/*
+ * hostapd / VLAN initialization - full dynamic VLAN
+ * Copyright 2003, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "utils/includes.h"
+#include <net/if.h>
+/* Avoid conflicts due to NetBSD net/if.h if_type define with driver.h */
+#undef if_type
+#include <sys/ioctl.h>
+#include <linux/if_vlan.h>
+#include <linux/if_bridge.h>
+
+#include "utils/common.h"
+#include "drivers/priv_netlink.h"
+#include "utils/eloop.h"
+#include "hostapd.h"
+#include "ap_config.h"
+#include "ap_drv_ops.h"
+#include "wpa_auth.h"
+#include "vlan_init.h"
+#include "vlan_util.h"
+
+
+struct full_dynamic_vlan {
+ int s; /* socket on which to listen for new/removed interfaces. */
+};
+
+#define DVLAN_CLEAN_BR 0x1
+#define DVLAN_CLEAN_VLAN 0x2
+#define DVLAN_CLEAN_VLAN_PORT 0x4
+
+struct dynamic_iface {
+ char ifname[IFNAMSIZ + 1];
+ int usage;
+ int clean;
+ struct dynamic_iface *next;
+};
+
+
+/* Increment ref counter for ifname and add clean flag.
+ * If not in list, add it only if some flags are given.
+ */
+static void dyn_iface_get(struct hostapd_data *hapd, const char *ifname,
+ int clean)
+{
+ struct dynamic_iface *next, **dynamic_ifaces;
+ struct hapd_interfaces *interfaces;
+
+ interfaces = hapd->iface->interfaces;
+ dynamic_ifaces = &interfaces->vlan_priv;
+
+ for (next = *dynamic_ifaces; next; next = next->next) {
+ if (os_strcmp(ifname, next->ifname) == 0)
+ break;
+ }
+
+ if (next) {
+ next->usage++;
+ next->clean |= clean;
+ return;
+ }
+
+ if (!clean)
+ return;
+
+ next = os_zalloc(sizeof(*next));
+ if (!next)
+ return;
+ os_strlcpy(next->ifname, ifname, sizeof(next->ifname));
+ next->usage = 1;
+ next->clean = clean;
+ next->next = *dynamic_ifaces;
+ *dynamic_ifaces = next;
+}
+
+
+/* Decrement reference counter for given ifname.
+ * Return clean flag iff reference counter was decreased to zero, else zero
+ */
+static int dyn_iface_put(struct hostapd_data *hapd, const char *ifname)
+{
+ struct dynamic_iface *next, *prev = NULL, **dynamic_ifaces;
+ struct hapd_interfaces *interfaces;
+ int clean;
+
+ interfaces = hapd->iface->interfaces;
+ dynamic_ifaces = &interfaces->vlan_priv;
+
+ for (next = *dynamic_ifaces; next; next = next->next) {
+ if (os_strcmp(ifname, next->ifname) == 0)
+ break;
+ prev = next;
+ }
+
+ if (!next)
+ return 0;
+
+ next->usage--;
+ if (next->usage)
+ return 0;
+
+ if (prev)
+ prev->next = next->next;
+ else
+ *dynamic_ifaces = next->next;
+ clean = next->clean;
+ os_free(next);
+
+ return clean;
+}
+
+
+static int ifconfig_down(const char *if_name)
+{
+ wpa_printf(MSG_DEBUG, "VLAN: Set interface %s down", if_name);
+ return ifconfig_helper(if_name, 0);
+}
+
+
+/* This value should be 256 ONLY. If it is something else, then hostapd
+ * might crash!, as this value has been hard-coded in 2.4.x kernel
+ * bridging code.
+ */
+#define MAX_BR_PORTS 256
+
+static int br_delif(const char *br_name, const char *if_name)
+{
+ int fd;
+ struct ifreq ifr;
+ unsigned long args[2];
+ int if_index;
+
+ wpa_printf(MSG_DEBUG, "VLAN: br_delif(%s, %s)", br_name, if_name);
+ if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+ wpa_printf(MSG_ERROR, "VLAN: %s: socket(AF_INET,SOCK_STREAM) "
+ "failed: %s", __func__, strerror(errno));
+ return -1;
+ }
+
+ if_index = if_nametoindex(if_name);
+
+ if (if_index == 0) {
+ wpa_printf(MSG_ERROR, "VLAN: %s: Failure determining "
+ "interface index for '%s'",
+ __func__, if_name);
+ close(fd);
+ return -1;
+ }
+
+ args[0] = BRCTL_DEL_IF;
+ args[1] = if_index;
+
+ os_strlcpy(ifr.ifr_name, br_name, sizeof(ifr.ifr_name));
+ ifr.ifr_data = (void *) args;
+
+ if (ioctl(fd, SIOCDEVPRIVATE, &ifr) < 0 && errno != EINVAL) {
+ /* No error if interface already removed. */
+ wpa_printf(MSG_ERROR, "VLAN: %s: ioctl[SIOCDEVPRIVATE,"
+ "BRCTL_DEL_IF] failed for br_name=%s if_name=%s: "
+ "%s", __func__, br_name, if_name, strerror(errno));
+ close(fd);
+ return -1;
+ }
+
+ close(fd);
+ return 0;
+}
+
+
+/*
+ Add interface 'if_name' to the bridge 'br_name'
+
+ returns -1 on error
+ returns 1 if the interface is already part of the bridge
+ returns 0 otherwise
+*/
+static int br_addif(const char *br_name, const char *if_name)
+{
+ int fd;
+ struct ifreq ifr;
+ unsigned long args[2];
+ int if_index;
+
+ wpa_printf(MSG_DEBUG, "VLAN: br_addif(%s, %s)", br_name, if_name);
+ if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+ wpa_printf(MSG_ERROR, "VLAN: %s: socket(AF_INET,SOCK_STREAM) "
+ "failed: %s", __func__, strerror(errno));
+ return -1;
+ }
+
+ if_index = if_nametoindex(if_name);
+
+ if (if_index == 0) {
+ wpa_printf(MSG_ERROR, "VLAN: %s: Failure determining "
+ "interface index for '%s'",
+ __func__, if_name);
+ close(fd);
+ return -1;
+ }
+
+ args[0] = BRCTL_ADD_IF;
+ args[1] = if_index;
+
+ os_strlcpy(ifr.ifr_name, br_name, sizeof(ifr.ifr_name));
+ ifr.ifr_data = (void *) args;
+
+ if (ioctl(fd, SIOCDEVPRIVATE, &ifr) < 0) {
+ if (errno == EBUSY) {
+ /* The interface is already added. */
+ close(fd);
+ return 1;
+ }
+
+ wpa_printf(MSG_ERROR, "VLAN: %s: ioctl[SIOCDEVPRIVATE,"
+ "BRCTL_ADD_IF] failed for br_name=%s if_name=%s: "
+ "%s", __func__, br_name, if_name, strerror(errno));
+ close(fd);
+ return -1;
+ }
+
+ close(fd);
+ return 0;
+}
+
+
+static int br_delbr(const char *br_name)
+{
+ int fd;
+ unsigned long arg[2];
+
+ wpa_printf(MSG_DEBUG, "VLAN: br_delbr(%s)", br_name);
+ if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+ wpa_printf(MSG_ERROR, "VLAN: %s: socket(AF_INET,SOCK_STREAM) "
+ "failed: %s", __func__, strerror(errno));
+ return -1;
+ }
+
+ arg[0] = BRCTL_DEL_BRIDGE;
+ arg[1] = (unsigned long) br_name;
+
+ if (ioctl(fd, SIOCGIFBR, arg) < 0 && errno != ENXIO) {
+ /* No error if bridge already removed. */
+ wpa_printf(MSG_ERROR, "VLAN: %s: BRCTL_DEL_BRIDGE failed for "
+ "%s: %s", __func__, br_name, strerror(errno));
+ close(fd);
+ return -1;
+ }
+
+ close(fd);
+ return 0;
+}
+
+
+/*
+ Add a bridge with the name 'br_name'.
+
+ returns -1 on error
+ returns 1 if the bridge already exists
+ returns 0 otherwise
+*/
+static int br_addbr(const char *br_name)
+{
+ int fd;
+ unsigned long arg[4];
+ struct ifreq ifr;
+
+ wpa_printf(MSG_DEBUG, "VLAN: br_addbr(%s)", br_name);
+ if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+ wpa_printf(MSG_ERROR, "VLAN: %s: socket(AF_INET,SOCK_STREAM) "
+ "failed: %s", __func__, strerror(errno));
+ return -1;
+ }
+
+ arg[0] = BRCTL_ADD_BRIDGE;
+ arg[1] = (unsigned long) br_name;
+
+ if (ioctl(fd, SIOCGIFBR, arg) < 0) {
+ if (errno == EEXIST) {
+ /* The bridge is already added. */
+ close(fd);
+ return 1;
+ } else {
+ wpa_printf(MSG_ERROR, "VLAN: %s: BRCTL_ADD_BRIDGE "
+ "failed for %s: %s",
+ __func__, br_name, strerror(errno));
+ close(fd);
+ return -1;
+ }
+ }
+
+ /* Decrease forwarding delay to avoid EAPOL timeouts. */
+ os_memset(&ifr, 0, sizeof(ifr));
+ os_strlcpy(ifr.ifr_name, br_name, IFNAMSIZ);
+ arg[0] = BRCTL_SET_BRIDGE_FORWARD_DELAY;
+ arg[1] = 1;
+ arg[2] = 0;
+ arg[3] = 0;
+ ifr.ifr_data = (char *) &arg;
+ if (ioctl(fd, SIOCDEVPRIVATE, &ifr) < 0) {
+ wpa_printf(MSG_ERROR, "VLAN: %s: "
+ "BRCTL_SET_BRIDGE_FORWARD_DELAY (1 sec) failed for "
+ "%s: %s", __func__, br_name, strerror(errno));
+ /* Continue anyway */
+ }
+
+ close(fd);
+ return 0;
+}
+
+
+static int br_getnumports(const char *br_name)
+{
+ int fd;
+ int i;
+ int port_cnt = 0;
+ unsigned long arg[4];
+ int ifindices[MAX_BR_PORTS];
+ struct ifreq ifr;
+
+ if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+ wpa_printf(MSG_ERROR, "VLAN: %s: socket(AF_INET,SOCK_STREAM) "
+ "failed: %s", __func__, strerror(errno));
+ return -1;
+ }
+
+ arg[0] = BRCTL_GET_PORT_LIST;
+ arg[1] = (unsigned long) ifindices;
+ arg[2] = MAX_BR_PORTS;
+ arg[3] = 0;
+
+ os_memset(ifindices, 0, sizeof(ifindices));
+ os_strlcpy(ifr.ifr_name, br_name, sizeof(ifr.ifr_name));
+ ifr.ifr_data = (void *) arg;
+
+ if (ioctl(fd, SIOCDEVPRIVATE, &ifr) < 0) {
+ wpa_printf(MSG_ERROR, "VLAN: %s: BRCTL_GET_PORT_LIST "
+ "failed for %s: %s",
+ __func__, br_name, strerror(errno));
+ close(fd);
+ return -1;
+ }
+
+ for (i = 1; i < MAX_BR_PORTS; i++) {
+ if (ifindices[i] > 0) {
+ port_cnt++;
+ }
+ }
+
+ close(fd);
+ return port_cnt;
+}
+
+
+static void vlan_newlink_tagged(int vlan_naming, const char *tagged_interface,
+ const char *br_name, int vid,
+ struct hostapd_data *hapd)
+{
+ char vlan_ifname[IFNAMSIZ];
+ int clean;
+
+ if (vlan_naming == DYNAMIC_VLAN_NAMING_WITH_DEVICE)
+ os_snprintf(vlan_ifname, sizeof(vlan_ifname), "%s.%d",
+ tagged_interface, vid);
+ else
+ os_snprintf(vlan_ifname, sizeof(vlan_ifname), "vlan%d", vid);
+
+ clean = 0;
+ ifconfig_up(tagged_interface);
+ if (!vlan_add(tagged_interface, vid, vlan_ifname))
+ clean |= DVLAN_CLEAN_VLAN;
+
+ if (!br_addif(br_name, vlan_ifname))
+ clean |= DVLAN_CLEAN_VLAN_PORT;
+
+ dyn_iface_get(hapd, vlan_ifname, clean);
+
+ ifconfig_up(vlan_ifname);
+}
+
+
+static void vlan_bridge_name(char *br_name, struct hostapd_data *hapd, int vid)
+{
+ char *tagged_interface = hapd->conf->ssid.vlan_tagged_interface;
+
+ if (hapd->conf->vlan_bridge[0]) {
+ os_snprintf(br_name, IFNAMSIZ, "%s%d",
+ hapd->conf->vlan_bridge, vid);
+ } else if (tagged_interface) {
+ os_snprintf(br_name, IFNAMSIZ, "br%s.%d",
+ tagged_interface, vid);
+ } else {
+ os_snprintf(br_name, IFNAMSIZ, "brvlan%d", vid);
+ }
+}
+
+
+static void vlan_get_bridge(const char *br_name, struct hostapd_data *hapd,
+ int vid)
+{
+ char *tagged_interface = hapd->conf->ssid.vlan_tagged_interface;
+ int vlan_naming = hapd->conf->ssid.vlan_naming;
+
+ dyn_iface_get(hapd, br_name, br_addbr(br_name) ? 0 : DVLAN_CLEAN_BR);
+
+ ifconfig_up(br_name);
+
+ if (tagged_interface)
+ vlan_newlink_tagged(vlan_naming, tagged_interface, br_name,
+ vid, hapd);
+}
+
+
+void vlan_newlink(const char *ifname, struct hostapd_data *hapd)
+{
+ char br_name[IFNAMSIZ];
+ struct hostapd_vlan *vlan;
+ int untagged, *tagged, i, notempty;
+
+ wpa_printf(MSG_DEBUG, "VLAN: vlan_newlink(%s)", ifname);
+
+ for (vlan = hapd->conf->vlan; vlan; vlan = vlan->next) {
+ if (vlan->configured ||
+ os_strcmp(ifname, vlan->ifname) != 0)
+ continue;
+ break;
+ }
+ if (!vlan)
+ return;
+
+ vlan->configured = 1;
+
+ notempty = vlan->vlan_desc.notempty;
+ untagged = vlan->vlan_desc.untagged;
+ tagged = vlan->vlan_desc.tagged;
+
+ if (!notempty) {
+ /* Non-VLAN STA */
+ if (hapd->conf->bridge[0] &&
+ !br_addif(hapd->conf->bridge, ifname))
+ vlan->clean |= DVLAN_CLEAN_WLAN_PORT;
+ } else if (untagged > 0 && untagged <= MAX_VLAN_ID) {
+ vlan_bridge_name(br_name, hapd, untagged);
+
+ vlan_get_bridge(br_name, hapd, untagged);
+
+ if (!br_addif(br_name, ifname))
+ vlan->clean |= DVLAN_CLEAN_WLAN_PORT;
+ }
+
+ for (i = 0; i < MAX_NUM_TAGGED_VLAN && tagged[i]; i++) {
+ if (tagged[i] == untagged ||
+ tagged[i] <= 0 || tagged[i] > MAX_VLAN_ID ||
+ (i > 0 && tagged[i] == tagged[i - 1]))
+ continue;
+ vlan_bridge_name(br_name, hapd, tagged[i]);
+ vlan_get_bridge(br_name, hapd, tagged[i]);
+ vlan_newlink_tagged(DYNAMIC_VLAN_NAMING_WITH_DEVICE,
+ ifname, br_name, tagged[i], hapd);
+ }
+
+ ifconfig_up(ifname);
+}
+
+
+static void vlan_dellink_tagged(int vlan_naming, const char *tagged_interface,
+ const char *br_name, int vid,
+ struct hostapd_data *hapd)
+{
+ char vlan_ifname[IFNAMSIZ];
+ int clean;
+
+ if (vlan_naming == DYNAMIC_VLAN_NAMING_WITH_DEVICE)
+ os_snprintf(vlan_ifname, sizeof(vlan_ifname), "%s.%d",
+ tagged_interface, vid);
+ else
+ os_snprintf(vlan_ifname, sizeof(vlan_ifname), "vlan%d", vid);
+
+ clean = dyn_iface_put(hapd, vlan_ifname);
+
+ if (clean & DVLAN_CLEAN_VLAN_PORT)
+ br_delif(br_name, vlan_ifname);
+
+ if (clean & DVLAN_CLEAN_VLAN) {
+ ifconfig_down(vlan_ifname);
+ vlan_rem(vlan_ifname);
+ }
+}
+
+
+static void vlan_put_bridge(const char *br_name, struct hostapd_data *hapd,
+ int vid)
+{
+ int clean;
+ char *tagged_interface = hapd->conf->ssid.vlan_tagged_interface;
+ int vlan_naming = hapd->conf->ssid.vlan_naming;
+
+ if (tagged_interface)
+ vlan_dellink_tagged(vlan_naming, tagged_interface, br_name,
+ vid, hapd);
+
+ clean = dyn_iface_put(hapd, br_name);
+ if ((clean & DVLAN_CLEAN_BR) && br_getnumports(br_name) == 0) {
+ ifconfig_down(br_name);
+ br_delbr(br_name);
+ }
+}
+
+
+void vlan_dellink(const char *ifname, struct hostapd_data *hapd)
+{
+ struct hostapd_vlan *first, *prev, *vlan = hapd->conf->vlan;
+
+ wpa_printf(MSG_DEBUG, "VLAN: vlan_dellink(%s)", ifname);
+
+ first = prev = vlan;
+
+ while (vlan) {
+ if (os_strcmp(ifname, vlan->ifname) != 0) {
+ prev = vlan;
+ vlan = vlan->next;
+ continue;
+ }
+ break;
+ }
+ if (!vlan)
+ return;
+
+ if (vlan->configured) {
+ int notempty = vlan->vlan_desc.notempty;
+ int untagged = vlan->vlan_desc.untagged;
+ int *tagged = vlan->vlan_desc.tagged;
+ char br_name[IFNAMSIZ];
+ int i;
+
+ for (i = 0; i < MAX_NUM_TAGGED_VLAN && tagged[i]; i++) {
+ if (tagged[i] == untagged ||
+ tagged[i] <= 0 || tagged[i] > MAX_VLAN_ID ||
+ (i > 0 && tagged[i] == tagged[i - 1]))
+ continue;
+ vlan_bridge_name(br_name, hapd, tagged[i]);
+ vlan_dellink_tagged(DYNAMIC_VLAN_NAMING_WITH_DEVICE,
+ ifname, br_name, tagged[i], hapd);
+ vlan_put_bridge(br_name, hapd, tagged[i]);
+ }
+
+ if (!notempty) {
+ /* Non-VLAN STA */
+ if (hapd->conf->bridge[0] &&
+ (vlan->clean & DVLAN_CLEAN_WLAN_PORT))
+ br_delif(hapd->conf->bridge, ifname);
+ } else if (untagged > 0 && untagged <= MAX_VLAN_ID) {
+ vlan_bridge_name(br_name, hapd, untagged);
+
+ if (vlan->clean & DVLAN_CLEAN_WLAN_PORT)
+ br_delif(br_name, vlan->ifname);
+
+ vlan_put_bridge(br_name, hapd, untagged);
+ }
+ }
+
+ /*
+ * Ensure this VLAN interface is actually removed even if
+ * NEWLINK message is only received later.
+ */
+ if (if_nametoindex(vlan->ifname) && vlan_if_remove(hapd, vlan))
+ wpa_printf(MSG_ERROR,
+ "VLAN: Could not remove VLAN iface: %s: %s",
+ vlan->ifname, strerror(errno));
+
+ if (vlan == first)
+ hapd->conf->vlan = vlan->next;
+ else
+ prev->next = vlan->next;
+
+ os_free(vlan);
+}
+
+
+static void
+vlan_read_ifnames(struct nlmsghdr *h, size_t len, int del,
+ struct hostapd_data *hapd)
+{
+ struct ifinfomsg *ifi;
+ int attrlen, nlmsg_len, rta_len;
+ struct rtattr *attr;
+ char ifname[IFNAMSIZ + 1];
+
+ if (len < sizeof(*ifi))
+ return;
+
+ ifi = NLMSG_DATA(h);
+
+ nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
+
+ attrlen = h->nlmsg_len - nlmsg_len;
+ if (attrlen < 0)
+ return;
+
+ attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
+
+ os_memset(ifname, 0, sizeof(ifname));
+ rta_len = RTA_ALIGN(sizeof(struct rtattr));
+ while (RTA_OK(attr, attrlen)) {
+ if (attr->rta_type == IFLA_IFNAME) {
+ int n = attr->rta_len - rta_len;
+ if (n < 0)
+ break;
+
+ if ((size_t) n >= sizeof(ifname))
+ n = sizeof(ifname) - 1;
+ os_memcpy(ifname, ((char *) attr) + rta_len, n);
+
+ }
+
+ attr = RTA_NEXT(attr, attrlen);
+ }
+
+ if (!ifname[0])
+ return;
+ if (del && if_nametoindex(ifname)) {
+ /* interface still exists, race condition ->
+ * iface has just been recreated */
+ return;
+ }
+
+ wpa_printf(MSG_DEBUG,
+ "VLAN: RTM_%sLINK: ifi_index=%d ifname=%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)",
+ del ? "DEL" : "NEW",
+ ifi->ifi_index, ifname, ifi->ifi_family, ifi->ifi_flags,
+ (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
+ (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
+ (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
+ (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
+
+ if (del)
+ vlan_dellink(ifname, hapd);
+ else
+ vlan_newlink(ifname, hapd);
+}
+
+
+static void vlan_event_receive(int sock, void *eloop_ctx, void *sock_ctx)
+{
+ char buf[8192];
+ int left;
+ struct sockaddr_nl from;
+ socklen_t fromlen;
+ struct nlmsghdr *h;
+ struct hostapd_data *hapd = eloop_ctx;
+
+ fromlen = sizeof(from);
+ left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
+ (struct sockaddr *) &from, &fromlen);
+ if (left < 0) {
+ if (errno != EINTR && errno != EAGAIN)
+ wpa_printf(MSG_ERROR, "VLAN: %s: recvfrom failed: %s",
+ __func__, strerror(errno));
+ return;
+ }
+
+ h = (struct nlmsghdr *) buf;
+ while (NLMSG_OK(h, left)) {
+ int len, plen;
+
+ len = h->nlmsg_len;
+ plen = len - sizeof(*h);
+ if (len > left || plen < 0) {
+ wpa_printf(MSG_DEBUG, "VLAN: Malformed netlink "
+ "message: len=%d left=%d plen=%d",
+ len, left, plen);
+ break;
+ }
+
+ switch (h->nlmsg_type) {
+ case RTM_NEWLINK:
+ vlan_read_ifnames(h, plen, 0, hapd);
+ break;
+ case RTM_DELLINK:
+ vlan_read_ifnames(h, plen, 1, hapd);
+ break;
+ }
+
+ h = NLMSG_NEXT(h, left);
+ }
+
+ if (left > 0) {
+ wpa_printf(MSG_DEBUG, "VLAN: %s: %d extra bytes in the end of "
+ "netlink message", __func__, left);
+ }
+}
+
+
+struct full_dynamic_vlan *
+full_dynamic_vlan_init(struct hostapd_data *hapd)
+{
+ struct sockaddr_nl local;
+ struct full_dynamic_vlan *priv;
+
+ priv = os_zalloc(sizeof(*priv));
+ if (priv == NULL)
+ return NULL;
+
+ vlan_set_name_type(hapd->conf->ssid.vlan_naming ==
+ DYNAMIC_VLAN_NAMING_WITH_DEVICE ?
+ VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD :
+ VLAN_NAME_TYPE_PLUS_VID_NO_PAD);
+
+ priv->s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+ if (priv->s < 0) {
+ wpa_printf(MSG_ERROR, "VLAN: %s: socket(PF_NETLINK,SOCK_RAW,"
+ "NETLINK_ROUTE) failed: %s",
+ __func__, strerror(errno));
+ os_free(priv);
+ return NULL;
+ }
+
+ os_memset(&local, 0, sizeof(local));
+ local.nl_family = AF_NETLINK;
+ local.nl_groups = RTMGRP_LINK;
+ if (bind(priv->s, (struct sockaddr *) &local, sizeof(local)) < 0) {
+ wpa_printf(MSG_ERROR, "VLAN: %s: bind(netlink) failed: %s",
+ __func__, strerror(errno));
+ close(priv->s);
+ os_free(priv);
+ return NULL;
+ }
+
+ if (eloop_register_read_sock(priv->s, vlan_event_receive, hapd, NULL))
+ {
+ close(priv->s);
+ os_free(priv);
+ return NULL;
+ }
+
+ return priv;
+}
+
+
+void full_dynamic_vlan_deinit(struct full_dynamic_vlan *priv)
+{
+ if (priv == NULL)
+ return;
+ eloop_unregister_read_sock(priv->s);
+ close(priv->s);
+ os_free(priv);
+}