diff --git a/hostapd/Android.mk b/hostapd/Android.mk index 3d5602afc..f251475a0 100644 --- a/hostapd/Android.mk +++ b/hostapd/Android.mk @@ -180,6 +180,7 @@ ifdef CONFIG_FULL_DYNAMIC_VLAN # Define CONFIG_FULL_DYNAMIC_VLAN to have hostapd manipulate bridges # and VLAN interfaces for the VLAN feature. L_CFLAGS += -DCONFIG_FULL_DYNAMIC_VLAN +OBJS += src/ap/vlan_full.c ifdef CONFIG_VLAN_NETLINK OBJS += src/ap/vlan_util.c else diff --git a/hostapd/Makefile b/hostapd/Makefile index d7af274d2..c4fa4c082 100644 --- a/hostapd/Makefile +++ b/hostapd/Makefile @@ -199,6 +199,7 @@ ifdef CONFIG_FULL_DYNAMIC_VLAN # Define CONFIG_FULL_DYNAMIC_VLAN to have hostapd manipulate bridges # and VLAN interfaces for the VLAN feature. CFLAGS += -DCONFIG_FULL_DYNAMIC_VLAN +OBJS += ../src/ap/vlan_full.o ifdef CONFIG_VLAN_NETLINK OBJS += ../src/ap/vlan_util.o else diff --git a/src/ap/vlan_full.c b/src/ap/vlan_full.c new file mode 100644 index 000000000..e9512feda --- /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 + * + * This software may be distributed under the terms of the BSD license. + * See README for more details. + */ + +#include "utils/includes.h" +#include +/* Avoid conflicts due to NetBSD net/if.h if_type define with driver.h */ +#undef if_type +#include +#include +#include + +#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); +} diff --git a/src/ap/vlan_init.c b/src/ap/vlan_init.c index 1ce95744a..d2c511e1f 100644 --- a/src/ap/vlan_init.c +++ b/src/ap/vlan_init.c @@ -20,110 +20,9 @@ #include #include -#ifdef CONFIG_FULL_DYNAMIC_VLAN -#include -#include -#endif /* CONFIG_FULL_DYNAMIC_VLAN */ -#ifdef CONFIG_FULL_DYNAMIC_VLAN - -#include "drivers/priv_netlink.h" -#include "utils/eloop.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; -} - -#endif /* CONFIG_FULL_DYNAMIC_VLAN */ - - -static int ifconfig_helper(const char *if_name, int up) +int ifconfig_helper(const char *if_name, int up) { int fd; struct ifreq ifr; @@ -215,7 +114,7 @@ static int vlan_if_add(struct hostapd_data *hapd, struct hostapd_vlan *vlan, } -static int vlan_if_remove(struct hostapd_data *hapd, struct hostapd_vlan *vlan) +int vlan_if_remove(struct hostapd_data *hapd, struct hostapd_vlan *vlan) { int ret; @@ -229,645 +128,6 @@ static int vlan_if_remove(struct hostapd_data *hapd, struct hostapd_vlan *vlan) } -#ifdef CONFIG_FULL_DYNAMIC_VLAN - -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); -} - - -static 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); - } -} - - -static 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); - } -} - - -static 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; -} - - -static 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); -} -#endif /* CONFIG_FULL_DYNAMIC_VLAN */ - - static int vlan_dynamic_add(struct hostapd_data *hapd, struct hostapd_vlan *vlan) { diff --git a/src/ap/vlan_util.h b/src/ap/vlan_util.h index 4eda793e4..5e9e690c0 100644 --- a/src/ap/vlan_util.h +++ b/src/ap/vlan_util.h @@ -9,10 +9,22 @@ #ifndef VLAN_UTIL_H #define VLAN_UTIL_H +struct hostapd_data; +struct hostapd_vlan; +struct full_dynamic_vlan; + int vlan_add(const char *if_name, int vid, const char *vlan_if_name); int vlan_rem(const char *if_name); int vlan_set_name_type(unsigned int name_type); +int ifconfig_helper(const char *if_name, int up); int ifconfig_up(const char *if_name); +int vlan_if_remove(struct hostapd_data *hapd, struct hostapd_vlan *vlan); + +struct full_dynamic_vlan * +full_dynamic_vlan_init(struct hostapd_data *hapd); +void full_dynamic_vlan_deinit(struct full_dynamic_vlan *priv); +void vlan_newlink(const char *ifname, struct hostapd_data *hapd); +void vlan_dellink(const char *ifname, struct hostapd_data *hapd); #endif /* VLAN_UTIL_H */