+++ /dev/null
-/*
- * Driver interaction with Linux Host AP driver
- * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
- *
- * This software may be distributed under the terms of the BSD license.
- * See README for more details.
- */
-
-#include "includes.h"
-#include <sys/ioctl.h>
-
-#include "linux_wext.h"
-#include "common.h"
-#include "driver.h"
-#include "driver_wext.h"
-#include "eloop.h"
-#include "driver_hostap.h"
-
-
-#include <net/if_arp.h>
-#include <netpacket/packet.h>
-
-#include "priv_netlink.h"
-#include "netlink.h"
-#include "linux_ioctl.h"
-#include "common/ieee802_11_defs.h"
-#include "common/ieee802_11_common.h"
-
-
-/* MTU to be set for the wlan#ap device; this is mainly needed for IEEE 802.1X
- * frames that might be longer than normal default MTU and they are not
- * fragmented */
-#define HOSTAPD_MTU 2290
-
-static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
-
-struct hostap_driver_data {
- struct hostapd_data *hapd;
-
- char iface[IFNAMSIZ + 1];
- int sock; /* raw packet socket for driver access */
- int ioctl_sock; /* socket for ioctl() use */
- struct netlink_data *netlink;
-
- int we_version;
-
- u8 *generic_ie;
- size_t generic_ie_len;
- u8 *wps_ie;
- size_t wps_ie_len;
-};
-
-
-static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
- int len);
-static int hostap_set_iface_flags(void *priv, int dev_up);
-
-static void handle_data(struct hostap_driver_data *drv, u8 *buf, size_t len,
- u16 stype)
-{
- struct ieee80211_hdr *hdr;
- u16 fc, ethertype;
- u8 *pos, *sa;
- size_t left;
- union wpa_event_data event;
-
- if (len < sizeof(struct ieee80211_hdr))
- return;
-
- hdr = (struct ieee80211_hdr *) buf;
- fc = le_to_host16(hdr->frame_control);
-
- if ((fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) != WLAN_FC_TODS) {
- printf("Not ToDS data frame (fc=0x%04x)\n", fc);
- return;
- }
-
- sa = hdr->addr2;
- os_memset(&event, 0, sizeof(event));
- event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
- event.rx_from_unknown.addr = sa;
- wpa_supplicant_event(drv->hapd, EVENT_RX_FROM_UNKNOWN, &event);
-
- pos = (u8 *) (hdr + 1);
- left = len - sizeof(*hdr);
-
- if (left < sizeof(rfc1042_header)) {
- printf("Too short data frame\n");
- return;
- }
-
- if (memcmp(pos, rfc1042_header, sizeof(rfc1042_header)) != 0) {
- printf("Data frame with no RFC1042 header\n");
- return;
- }
- pos += sizeof(rfc1042_header);
- left -= sizeof(rfc1042_header);
-
- if (left < 2) {
- printf("No ethertype in data frame\n");
- return;
- }
-
- ethertype = WPA_GET_BE16(pos);
- pos += 2;
- left -= 2;
- switch (ethertype) {
- case ETH_P_PAE:
- drv_event_eapol_rx(drv->hapd, sa, pos, left);
- break;
-
- default:
- printf("Unknown ethertype 0x%04x in data frame\n", ethertype);
- break;
- }
-}
-
-
-static void handle_tx_callback(struct hostap_driver_data *drv, u8 *buf,
- size_t len, int ok)
-{
- struct ieee80211_hdr *hdr;
- u16 fc;
- union wpa_event_data event;
-
- hdr = (struct ieee80211_hdr *) buf;
- fc = le_to_host16(hdr->frame_control);
-
- os_memset(&event, 0, sizeof(event));
- event.tx_status.type = WLAN_FC_GET_TYPE(fc);
- event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
- event.tx_status.dst = hdr->addr1;
- event.tx_status.data = buf;
- event.tx_status.data_len = len;
- event.tx_status.ack = ok;
- wpa_supplicant_event(drv->hapd, EVENT_TX_STATUS, &event);
-}
-
-
-static void handle_frame(struct hostap_driver_data *drv, u8 *buf, size_t len)
-{
- struct ieee80211_hdr *hdr;
- u16 fc, type, stype;
- size_t data_len = len;
- int ver;
- union wpa_event_data event;
-
- /* PSPOLL is only 16 bytes, but driver does not (at least yet) pass
- * these to user space */
- if (len < 24) {
- wpa_printf(MSG_MSGDUMP, "handle_frame: too short (%lu)",
- (unsigned long) len);
- return;
- }
-
- hdr = (struct ieee80211_hdr *) buf;
- fc = le_to_host16(hdr->frame_control);
- type = WLAN_FC_GET_TYPE(fc);
- stype = WLAN_FC_GET_STYPE(fc);
-
- if (type != WLAN_FC_TYPE_MGMT || stype != WLAN_FC_STYPE_BEACON) {
- wpa_hexdump(MSG_MSGDUMP, "Received management frame",
- buf, len);
- }
-
- ver = fc & WLAN_FC_PVER;
-
- /* protocol version 2 is reserved for indicating ACKed frame (TX
- * callbacks), and version 1 for indicating failed frame (no ACK, TX
- * callbacks) */
- if (ver == 1 || ver == 2) {
- handle_tx_callback(drv, buf, data_len, ver == 2 ? 1 : 0);
- return;
- } else if (ver != 0) {
- printf("unknown protocol version %d\n", ver);
- return;
- }
-
- switch (type) {
- case WLAN_FC_TYPE_MGMT:
- os_memset(&event, 0, sizeof(event));
- event.rx_mgmt.frame = buf;
- event.rx_mgmt.frame_len = data_len;
- wpa_supplicant_event(drv->hapd, EVENT_RX_MGMT, &event);
- break;
- case WLAN_FC_TYPE_CTRL:
- wpa_printf(MSG_DEBUG, "CTRL");
- break;
- case WLAN_FC_TYPE_DATA:
- wpa_printf(MSG_DEBUG, "DATA");
- handle_data(drv, buf, data_len, stype);
- break;
- default:
- wpa_printf(MSG_DEBUG, "unknown frame type %d", type);
- break;
- }
-}
-
-
-static void handle_read(int sock, void *eloop_ctx, void *sock_ctx)
-{
- struct hostap_driver_data *drv = eloop_ctx;
- int len;
- unsigned char buf[3000];
-
- len = recv(sock, buf, sizeof(buf), 0);
- if (len < 0) {
- wpa_printf(MSG_ERROR, "recv: %s", strerror(errno));
- return;
- }
-
- handle_frame(drv, buf, len);
-}
-
-
-static int hostap_init_sockets(struct hostap_driver_data *drv, u8 *own_addr)
-{
- struct ifreq ifr;
- struct sockaddr_ll addr;
-
- drv->sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
- if (drv->sock < 0) {
- wpa_printf(MSG_ERROR, "socket[PF_PACKET,SOCK_RAW]: %s",
- strerror(errno));
- return -1;
- }
-
- if (eloop_register_read_sock(drv->sock, handle_read, drv, NULL)) {
- wpa_printf(MSG_ERROR, "Could not register read socket");
- return -1;
- }
-
- memset(&ifr, 0, sizeof(ifr));
- if (os_snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%sap",
- drv->iface) >= (int) sizeof(ifr.ifr_name)) {
- wpa_printf(MSG_ERROR, "hostap: AP interface name truncated");
- return -1;
- }
- if (ioctl(drv->sock, SIOCGIFINDEX, &ifr) != 0) {
- wpa_printf(MSG_ERROR, "ioctl(SIOCGIFINDEX): %s",
- strerror(errno));
- return -1;
- }
-
- if (hostap_set_iface_flags(drv, 1)) {
- return -1;
- }
-
- memset(&addr, 0, sizeof(addr));
- addr.sll_family = AF_PACKET;
- addr.sll_ifindex = ifr.ifr_ifindex;
- wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
- addr.sll_ifindex);
-
- if (bind(drv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- wpa_printf(MSG_ERROR, "bind: %s", strerror(errno));
- return -1;
- }
-
- return linux_get_ifhwaddr(drv->sock, drv->iface, own_addr);
-}
-
-
-static int hostap_send_mlme(void *priv, const u8 *msg, size_t len, int noack,
- unsigned int freq,
- const u16 *csa_offs, size_t csa_offs_len,
- int no_encrypt, unsigned int wait, int link_id)
-{
- struct hostap_driver_data *drv = priv;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) msg;
- int res;
-
- /* Request TX callback */
- hdr->frame_control |= host_to_le16(BIT(1));
- res = send(drv->sock, msg, len, 0);
- hdr->frame_control &= ~host_to_le16(BIT(1));
-
- return res;
-}
-
-
-static int hostap_send_eapol(void *priv, const u8 *addr, const u8 *data,
- size_t data_len, int encrypt, const u8 *own_addr,
- u32 flags, int link_id)
-{
- struct hostap_driver_data *drv = priv;
- struct ieee80211_hdr *hdr;
- size_t len;
- u8 *pos;
- int res;
-
- len = sizeof(*hdr) + sizeof(rfc1042_header) + 2 + data_len;
- hdr = os_zalloc(len);
- if (hdr == NULL) {
- printf("malloc() failed for hostapd_send_data(len=%lu)\n",
- (unsigned long) len);
- return -1;
- }
-
- hdr->frame_control =
- IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
- hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
- if (encrypt)
- hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
- memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
- memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
- memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
-
- pos = (u8 *) (hdr + 1);
- memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
- pos += sizeof(rfc1042_header);
- *((u16 *) pos) = htons(ETH_P_PAE);
- pos += 2;
- memcpy(pos, data, data_len);
-
- res = hostap_send_mlme(drv, (u8 *) hdr, len, 0, 0, NULL, 0, 0, 0, -1);
- if (res < 0) {
- wpa_printf(MSG_ERROR, "hostap_send_eapol - packet len: %lu - "
- "failed: %d (%s)",
- (unsigned long) len, errno, strerror(errno));
- }
- os_free(hdr);
-
- return res;
-}
-
-
-static int hostap_sta_set_flags(void *priv, const u8 *addr,
- unsigned int total_flags, unsigned int flags_or,
- unsigned int flags_and)
-{
- struct hostap_driver_data *drv = priv;
- struct prism2_hostapd_param param;
-
- if (flags_or & WPA_STA_AUTHORIZED)
- flags_or = BIT(5); /* WLAN_STA_AUTHORIZED */
- if (!(flags_and & WPA_STA_AUTHORIZED))
- flags_and = ~BIT(5);
- else
- flags_and = ~0;
- memset(¶m, 0, sizeof(param));
- param.cmd = PRISM2_HOSTAPD_SET_FLAGS_STA;
- memcpy(param.sta_addr, addr, ETH_ALEN);
- param.u.set_flags_sta.flags_or = flags_or;
- param.u.set_flags_sta.flags_and = flags_and;
- return hostapd_ioctl(drv, ¶m, sizeof(param));
-}
-
-
-static int hostap_set_iface_flags(void *priv, int dev_up)
-{
- struct hostap_driver_data *drv = priv;
- struct ifreq ifr;
- char ifname[IFNAMSIZ];
-
- if (os_snprintf(ifname, IFNAMSIZ, "%sap", drv->iface) >= IFNAMSIZ) {
- wpa_printf(MSG_ERROR, "hostap: AP interface name truncated");
- return -1;
- }
- if (linux_set_iface_flags(drv->ioctl_sock, ifname, dev_up) < 0)
- return -1;
-
- if (dev_up) {
- memset(&ifr, 0, sizeof(ifr));
- os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
- ifr.ifr_mtu = HOSTAPD_MTU;
- if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
- wpa_printf(MSG_INFO,
- "Setting MTU failed - trying to survive with current value: ioctl[SIOCSIFMTU]: %s",
- strerror(errno));
- }
- }
-
- return 0;
-}
-
-
-static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
- int len)
-{
- struct hostap_driver_data *drv = priv;
- struct iwreq iwr;
-
- memset(&iwr, 0, sizeof(iwr));
- os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
- iwr.u.data.pointer = (caddr_t) param;
- iwr.u.data.length = len;
-
- if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
- wpa_printf(MSG_ERROR, "ioctl[PRISM2_IOCTL_HOSTAPD]: %s",
- strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-
-static int wpa_driver_hostap_set_key(void *priv,
- struct wpa_driver_set_key_params *params)
-{
- struct hostap_driver_data *drv = priv;
- struct prism2_hostapd_param *param;
- u8 *buf;
- size_t blen;
- int ret = 0;
- enum wpa_alg alg = params->alg;
- const u8 *addr = params->addr;
- int key_idx = params->key_idx;
- int set_tx = params->set_tx;
- const u8 *key = params->key;
- size_t key_len = params->key_len;
-
- if (params->key_flag & KEY_FLAG_NEXT)
- return -1;
-
- blen = sizeof(*param) + key_len;
- buf = os_zalloc(blen);
- if (buf == NULL)
- return -1;
-
- param = (struct prism2_hostapd_param *) buf;
- param->cmd = PRISM2_SET_ENCRYPTION;
- if (addr == NULL)
- memset(param->sta_addr, 0xff, ETH_ALEN);
- else
- memcpy(param->sta_addr, addr, ETH_ALEN);
- switch (alg) {
- case WPA_ALG_NONE:
- os_strlcpy((char *) param->u.crypt.alg, "NONE",
- HOSTAP_CRYPT_ALG_NAME_LEN);
- break;
- case WPA_ALG_WEP:
- os_strlcpy((char *) param->u.crypt.alg, "WEP",
- HOSTAP_CRYPT_ALG_NAME_LEN);
- break;
- case WPA_ALG_TKIP:
- os_strlcpy((char *) param->u.crypt.alg, "TKIP",
- HOSTAP_CRYPT_ALG_NAME_LEN);
- break;
- case WPA_ALG_CCMP:
- os_strlcpy((char *) param->u.crypt.alg, "CCMP",
- HOSTAP_CRYPT_ALG_NAME_LEN);
- break;
- default:
- os_free(buf);
- return -1;
- }
- param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0;
- param->u.crypt.idx = key_idx;
- param->u.crypt.key_len = key_len;
- memcpy((u8 *) (param + 1), key, key_len);
-
- if (hostapd_ioctl(drv, param, blen)) {
- printf("Failed to set encryption.\n");
- ret = -1;
- }
- free(buf);
-
- return ret;
-}
-
-
-static int hostap_get_seqnum(const char *ifname, void *priv, const u8 *addr,
- int idx, int link_id, u8 *seq)
-{
- struct hostap_driver_data *drv = priv;
- struct prism2_hostapd_param *param;
- u8 *buf;
- size_t blen;
- int ret = 0;
-
- blen = sizeof(*param) + 32;
- buf = os_zalloc(blen);
- if (buf == NULL)
- return -1;
-
- param = (struct prism2_hostapd_param *) buf;
- param->cmd = PRISM2_GET_ENCRYPTION;
- if (addr == NULL)
- os_memset(param->sta_addr, 0xff, ETH_ALEN);
- else
- os_memcpy(param->sta_addr, addr, ETH_ALEN);
- param->u.crypt.idx = idx;
-
- if (hostapd_ioctl(drv, param, blen)) {
- printf("Failed to get encryption.\n");
- ret = -1;
- } else {
- os_memcpy(seq, param->u.crypt.seq, 8);
- }
- os_free(buf);
-
- return ret;
-}
-
-
-static int hostap_ioctl_prism2param(void *priv, int param, int value)
-{
- struct hostap_driver_data *drv = priv;
- struct iwreq iwr;
- int *i;
-
- memset(&iwr, 0, sizeof(iwr));
- os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
- i = (int *) iwr.u.name;
- *i++ = param;
- *i++ = value;
-
- if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) {
- wpa_printf(MSG_ERROR, "ioctl[PRISM2_IOCTL_PRISM2_PARAM]: %s",
- strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-
-static int hostap_set_ieee8021x(void *priv, struct wpa_bss_params *params)
-{
- struct hostap_driver_data *drv = priv;
- int enabled = params->enabled;
-
- /* enable kernel driver support for IEEE 802.1X */
- if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_IEEE_802_1X, enabled)) {
- printf("Could not setup IEEE 802.1X support in kernel driver."
- "\n");
- return -1;
- }
-
- if (!enabled)
- return 0;
-
- /* use host driver implementation of encryption to allow
- * individual keys and passing plaintext EAPOL frames */
- if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_DECRYPT, 1) ||
- hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_ENCRYPT, 1)) {
- printf("Could not setup host-based encryption in kernel "
- "driver.\n");
- return -1;
- }
-
- return 0;
-}
-
-
-static int hostap_set_privacy(void *priv, int enabled)
-{
- struct hostap_drvier_data *drv = priv;
-
- return hostap_ioctl_prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED,
- enabled);
-}
-
-
-static int hostap_set_ssid(void *priv, const u8 *buf, int len)
-{
- struct hostap_driver_data *drv = priv;
- struct iwreq iwr;
-
- memset(&iwr, 0, sizeof(iwr));
- os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
- iwr.u.essid.flags = 1; /* SSID active */
- iwr.u.essid.pointer = (caddr_t) buf;
- iwr.u.essid.length = len + 1;
-
- if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
- wpa_printf(MSG_ERROR, "ioctl[SIOCSIWESSID,len=%d]: %s",
- len, strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-
-static int hostap_flush(void *priv, int link_id)
-{
- struct hostap_driver_data *drv = priv;
- struct prism2_hostapd_param param;
-
- memset(¶m, 0, sizeof(param));
- param.cmd = PRISM2_HOSTAPD_FLUSH;
- return hostapd_ioctl(drv, ¶m, sizeof(param));
-}
-
-
-static int hostap_read_sta_data(void *priv,
- struct hostap_sta_driver_data *data,
- const u8 *addr)
-{
- struct hostap_driver_data *drv = priv;
- char buf[1024], line[128], *pos;
- FILE *f;
- unsigned long val;
-
- memset(data, 0, sizeof(*data));
- snprintf(buf, sizeof(buf), "/proc/net/hostap/%s/" MACSTR,
- drv->iface, MAC2STR(addr));
-
- f = fopen(buf, "r");
- if (!f)
- return -1;
- /* Need to read proc file with in one piece, so use large enough
- * buffer. */
- setbuffer(f, buf, sizeof(buf));
-
- while (fgets(line, sizeof(line), f)) {
- pos = strchr(line, '=');
- if (!pos)
- continue;
- *pos++ = '\0';
- val = strtoul(pos, NULL, 10);
- if (strcmp(line, "rx_packets") == 0)
- data->rx_packets = val;
- else if (strcmp(line, "tx_packets") == 0)
- data->tx_packets = val;
- else if (strcmp(line, "rx_bytes") == 0)
- data->rx_bytes = val;
- else if (strcmp(line, "tx_bytes") == 0)
- data->tx_bytes = val;
- }
-
- fclose(f);
-
- return 0;
-}
-
-
-static int hostap_sta_add(void *priv, struct hostapd_sta_add_params *params)
-{
- struct hostap_driver_data *drv = priv;
- struct prism2_hostapd_param param;
- int tx_supp_rates = 0;
- size_t i;
-
-#define WLAN_RATE_1M BIT(0)
-#define WLAN_RATE_2M BIT(1)
-#define WLAN_RATE_5M5 BIT(2)
-#define WLAN_RATE_11M BIT(3)
-
- for (i = 0; i < params->supp_rates_len; i++) {
- if ((params->supp_rates[i] & 0x7f) == 2)
- tx_supp_rates |= WLAN_RATE_1M;
- if ((params->supp_rates[i] & 0x7f) == 4)
- tx_supp_rates |= WLAN_RATE_2M;
- if ((params->supp_rates[i] & 0x7f) == 11)
- tx_supp_rates |= WLAN_RATE_5M5;
- if ((params->supp_rates[i] & 0x7f) == 22)
- tx_supp_rates |= WLAN_RATE_11M;
- }
-
- memset(¶m, 0, sizeof(param));
- param.cmd = PRISM2_HOSTAPD_ADD_STA;
- memcpy(param.sta_addr, params->addr, ETH_ALEN);
- param.u.add_sta.aid = params->aid;
- param.u.add_sta.capability = params->capability;
- param.u.add_sta.tx_supp_rates = tx_supp_rates;
- return hostapd_ioctl(drv, ¶m, sizeof(param));
-}
-
-
-static int hostap_sta_remove(void *priv, const u8 *addr)
-{
- struct hostap_driver_data *drv = priv;
- struct prism2_hostapd_param param;
-
- hostap_sta_set_flags(drv, addr, 0, 0, ~WPA_STA_AUTHORIZED);
-
- memset(¶m, 0, sizeof(param));
- param.cmd = PRISM2_HOSTAPD_REMOVE_STA;
- memcpy(param.sta_addr, addr, ETH_ALEN);
- if (hostapd_ioctl(drv, ¶m, sizeof(param))) {
- printf("Could not remove station from kernel driver.\n");
- return -1;
- }
- return 0;
-}
-
-
-static int hostap_get_inact_sec(void *priv, const u8 *addr)
-{
- struct hostap_driver_data *drv = priv;
- struct prism2_hostapd_param param;
-
- memset(¶m, 0, sizeof(param));
- param.cmd = PRISM2_HOSTAPD_GET_INFO_STA;
- memcpy(param.sta_addr, addr, ETH_ALEN);
- if (hostapd_ioctl(drv, ¶m, sizeof(param))) {
- return -1;
- }
-
- return param.u.get_info_sta.inactive_sec;
-}
-
-
-static int hostap_sta_clear_stats(void *priv, const u8 *addr)
-{
- struct hostap_driver_data *drv = priv;
- struct prism2_hostapd_param param;
-
- memset(¶m, 0, sizeof(param));
- param.cmd = PRISM2_HOSTAPD_STA_CLEAR_STATS;
- memcpy(param.sta_addr, addr, ETH_ALEN);
- if (hostapd_ioctl(drv, ¶m, sizeof(param))) {
- return -1;
- }
-
- return 0;
-}
-
-
-static int hostapd_ioctl_set_generic_elem(struct hostap_driver_data *drv)
-{
- struct prism2_hostapd_param *param;
- int res;
- size_t blen, elem_len;
-
- elem_len = drv->generic_ie_len + drv->wps_ie_len;
- blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + elem_len;
- if (blen < sizeof(*param))
- blen = sizeof(*param);
-
- param = os_zalloc(blen);
- if (param == NULL)
- return -1;
-
- param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT;
- param->u.generic_elem.len = elem_len;
- if (drv->generic_ie) {
- os_memcpy(param->u.generic_elem.data, drv->generic_ie,
- drv->generic_ie_len);
- }
- if (drv->wps_ie) {
- os_memcpy(¶m->u.generic_elem.data[drv->generic_ie_len],
- drv->wps_ie, drv->wps_ie_len);
- }
- wpa_hexdump(MSG_DEBUG, "hostap: Set generic IE",
- param->u.generic_elem.data, elem_len);
- res = hostapd_ioctl(drv, param, blen);
-
- os_free(param);
-
- return res;
-}
-
-
-static int hostap_set_generic_elem(void *priv,
- const u8 *elem, size_t elem_len)
-{
- struct hostap_driver_data *drv = priv;
-
- os_free(drv->generic_ie);
- drv->generic_ie = NULL;
- drv->generic_ie_len = 0;
- if (elem) {
- drv->generic_ie = os_memdup(elem, elem_len);
- if (drv->generic_ie == NULL)
- return -1;
- drv->generic_ie_len = elem_len;
- }
-
- return hostapd_ioctl_set_generic_elem(drv);
-}
-
-
-static int hostap_set_ap_wps_ie(void *priv, const struct wpabuf *beacon,
- const struct wpabuf *proberesp,
- const struct wpabuf *assocresp)
-{
- struct hostap_driver_data *drv = priv;
-
- /*
- * Host AP driver supports only one set of extra IEs, so we need to
- * use the Probe Response IEs also for Beacon frames since they include
- * more information.
- */
-
- os_free(drv->wps_ie);
- drv->wps_ie = NULL;
- drv->wps_ie_len = 0;
- if (proberesp) {
- drv->wps_ie = os_memdup(wpabuf_head(proberesp),
- wpabuf_len(proberesp));
- if (drv->wps_ie == NULL)
- return -1;
- drv->wps_ie_len = wpabuf_len(proberesp);
- }
-
- return hostapd_ioctl_set_generic_elem(drv);
-}
-
-
-static void
-hostapd_wireless_event_wireless_custom(struct hostap_driver_data *drv,
- char *custom)
-{
- wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
-
- if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
- char *pos;
- u8 addr[ETH_ALEN];
- pos = strstr(custom, "addr=");
- if (pos == NULL) {
- wpa_printf(MSG_DEBUG,
- "MLME-MICHAELMICFAILURE.indication "
- "without sender address ignored");
- return;
- }
- pos += 5;
- if (hwaddr_aton(pos, addr) == 0) {
- union wpa_event_data data;
- os_memset(&data, 0, sizeof(data));
- data.michael_mic_failure.unicast = 1;
- data.michael_mic_failure.src = addr;
- wpa_supplicant_event(drv->hapd,
- EVENT_MICHAEL_MIC_FAILURE, &data);
- } else {
- wpa_printf(MSG_DEBUG,
- "MLME-MICHAELMICFAILURE.indication "
- "with invalid MAC address");
- }
- }
-}
-
-
-static void hostapd_wireless_event_wireless(struct hostap_driver_data *drv,
- char *data, unsigned int len)
-{
- struct iw_event iwe_buf, *iwe = &iwe_buf;
- char *pos, *end, *custom, *buf;
-
- pos = data;
- end = data + len;
-
- while ((size_t) (end - pos) >= IW_EV_LCP_LEN) {
- /* Event data may be unaligned, so make a local, aligned copy
- * before processing. */
- memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
- wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
- iwe->cmd, iwe->len);
- if (iwe->len <= IW_EV_LCP_LEN || iwe->len > end - pos)
- return;
-
- custom = pos + IW_EV_POINT_LEN;
- if (drv->we_version > 18 &&
- (iwe->cmd == IWEVMICHAELMICFAILURE ||
- iwe->cmd == IWEVCUSTOM)) {
- /* WE-19 removed the pointer from struct iw_point */
- char *dpos = (char *) &iwe_buf.u.data.length;
- int dlen = dpos - (char *) &iwe_buf;
- memcpy(dpos, pos + IW_EV_LCP_LEN,
- sizeof(struct iw_event) - dlen);
- } else {
- memcpy(&iwe_buf, pos, sizeof(struct iw_event));
- custom += IW_EV_POINT_OFF;
- }
-
- switch (iwe->cmd) {
- case IWEVCUSTOM:
- if (iwe->u.data.length > end - custom)
- return;
- buf = malloc(iwe->u.data.length + 1);
- if (buf == NULL)
- return;
- memcpy(buf, custom, iwe->u.data.length);
- buf[iwe->u.data.length] = '\0';
- hostapd_wireless_event_wireless_custom(drv, buf);
- free(buf);
- break;
- }
-
- pos += iwe->len;
- }
-}
-
-
-static void hostapd_wireless_event_rtm_newlink(void *ctx,
- struct ifinfomsg *ifi,
- u8 *buf, size_t len)
-{
- struct hostap_driver_data *drv = ctx;
- int attrlen, rta_len;
- struct rtattr *attr;
-
- /* TODO: use ifi->ifi_index to filter out wireless events from other
- * interfaces */
-
- attrlen = len;
- attr = (struct rtattr *) buf;
-
- rta_len = RTA_ALIGN(sizeof(struct rtattr));
- while (RTA_OK(attr, attrlen)) {
- if (attr->rta_type == IFLA_WIRELESS) {
- hostapd_wireless_event_wireless(
- drv, ((char *) attr) + rta_len,
- attr->rta_len - rta_len);
- }
- attr = RTA_NEXT(attr, attrlen);
- }
-}
-
-
-static int hostap_get_we_version(struct hostap_driver_data *drv)
-{
- struct iw_range *range;
- struct iwreq iwr;
- int minlen;
- size_t buflen;
-
- drv->we_version = 0;
-
- /*
- * Use larger buffer than struct iw_range in order to allow the
- * structure to grow in the future.
- */
- buflen = sizeof(struct iw_range) + 500;
- range = os_zalloc(buflen);
- if (range == NULL)
- return -1;
-
- memset(&iwr, 0, sizeof(iwr));
- os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
- iwr.u.data.pointer = (caddr_t) range;
- iwr.u.data.length = buflen;
-
- minlen = ((char *) &range->enc_capa) - (char *) range +
- sizeof(range->enc_capa);
-
- if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
- wpa_printf(MSG_ERROR, "ioctl[SIOCGIWRANGE]: %s",
- strerror(errno));
- os_free(range);
- return -1;
- } else if (iwr.u.data.length >= minlen &&
- range->we_version_compiled >= 18) {
- wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
- "WE(source)=%d enc_capa=0x%x",
- range->we_version_compiled,
- range->we_version_source,
- range->enc_capa);
- drv->we_version = range->we_version_compiled;
- }
-
- free(range);
- return 0;
-}
-
-
-static int hostap_wireless_event_init(struct hostap_driver_data *drv)
-{
- struct netlink_config *cfg;
-
- hostap_get_we_version(drv);
-
- cfg = os_zalloc(sizeof(*cfg));
- if (cfg == NULL)
- return -1;
- cfg->ctx = drv;
- cfg->newlink_cb = hostapd_wireless_event_rtm_newlink;
- drv->netlink = netlink_init(cfg);
- if (drv->netlink == NULL) {
- os_free(cfg);
- return -1;
- }
-
- return 0;
-}
-
-
-static void * hostap_init(struct hostapd_data *hapd,
- struct wpa_init_params *params)
-{
- struct hostap_driver_data *drv;
-
- drv = os_zalloc(sizeof(struct hostap_driver_data));
- if (drv == NULL) {
- printf("Could not allocate memory for hostapd driver data\n");
- return NULL;
- }
-
- drv->hapd = hapd;
- drv->ioctl_sock = drv->sock = -1;
- memcpy(drv->iface, params->ifname, sizeof(drv->iface));
-
- drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
- if (drv->ioctl_sock < 0) {
- wpa_printf(MSG_ERROR, "socket[PF_INET,SOCK_DGRAM]: %s",
- strerror(errno));
- os_free(drv);
- return NULL;
- }
-
- if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 1)) {
- wpa_printf(MSG_ERROR,
- "Could not enable hostapd mode for interface %s",
- drv->iface);
- close(drv->ioctl_sock);
- os_free(drv);
- return NULL;
- }
-
- if (hostap_init_sockets(drv, params->own_addr) ||
- hostap_wireless_event_init(drv)) {
- close(drv->ioctl_sock);
- os_free(drv);
- return NULL;
- }
-
- return drv;
-}
-
-
-static void hostap_driver_deinit(void *priv)
-{
- struct hostap_driver_data *drv = priv;
-
- netlink_deinit(drv->netlink);
- (void) hostap_set_iface_flags(drv, 0);
- (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 0);
- (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD_STA, 0);
-
- if (drv->ioctl_sock >= 0)
- close(drv->ioctl_sock);
-
- if (drv->sock >= 0)
- close(drv->sock);
-
- os_free(drv->generic_ie);
- os_free(drv->wps_ie);
-
- free(drv);
-}
-
-
-static int hostap_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
- u16 reason, int link_id)
-{
- struct hostap_driver_data *drv = priv;
- struct ieee80211_mgmt mgmt;
-
- if (is_broadcast_ether_addr(addr)) {
- /*
- * New Prism2.5/3 STA firmware versions seem to have issues
- * with this broadcast deauth frame. This gets the firmware in
- * odd state where nothing works correctly, so let's skip
- * sending this for the hostap driver.
- */
- return 0;
- }
-
- memset(&mgmt, 0, sizeof(mgmt));
- mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
- WLAN_FC_STYPE_DEAUTH);
- memcpy(mgmt.da, addr, ETH_ALEN);
- memcpy(mgmt.sa, own_addr, ETH_ALEN);
- memcpy(mgmt.bssid, own_addr, ETH_ALEN);
- mgmt.u.deauth.reason_code = host_to_le16(reason);
- return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN +
- sizeof(mgmt.u.deauth), 0, 0, NULL, 0, 0, 0, -1);
-}
-
-
-static int hostap_set_freq(void *priv, struct hostapd_freq_params *freq)
-{
- struct hostap_driver_data *drv = priv;
- struct iwreq iwr;
-
- os_memset(&iwr, 0, sizeof(iwr));
- os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
- iwr.u.freq.m = freq->channel;
- iwr.u.freq.e = 0;
-
- if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
- wpa_printf(MSG_ERROR, "ioctl[SIOCSIWFREQ]: %s",
- strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-
-static int hostap_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
- u16 reason, int link_id)
-{
- struct hostap_driver_data *drv = priv;
- struct ieee80211_mgmt mgmt;
-
- memset(&mgmt, 0, sizeof(mgmt));
- mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
- WLAN_FC_STYPE_DISASSOC);
- memcpy(mgmt.da, addr, ETH_ALEN);
- memcpy(mgmt.sa, own_addr, ETH_ALEN);
- memcpy(mgmt.bssid, own_addr, ETH_ALEN);
- mgmt.u.disassoc.reason_code = host_to_le16(reason);
- return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN +
- sizeof(mgmt.u.disassoc), 0, 0, NULL, 0, 0, 0,
- -1);
-}
-
-
-static struct hostapd_hw_modes * hostap_get_hw_feature_data(void *priv,
- u16 *num_modes,
- u16 *flags, u8 *dfs)
-{
- struct hostapd_hw_modes *mode;
- int i, clen, rlen;
- const short chan2freq[14] = {
- 2412, 2417, 2422, 2427, 2432, 2437, 2442,
- 2447, 2452, 2457, 2462, 2467, 2472, 2484
- };
-
- mode = os_zalloc(sizeof(struct hostapd_hw_modes));
- if (mode == NULL)
- return NULL;
-
- *num_modes = 1;
- *flags = 0;
- *dfs = 0;
-
- mode->mode = HOSTAPD_MODE_IEEE80211B;
- mode->num_channels = 14;
- mode->num_rates = 4;
-
- clen = mode->num_channels * sizeof(struct hostapd_channel_data);
- rlen = mode->num_rates * sizeof(int);
-
- mode->channels = os_zalloc(clen);
- mode->rates = os_zalloc(rlen);
- if (mode->channels == NULL || mode->rates == NULL) {
- os_free(mode->channels);
- os_free(mode->rates);
- os_free(mode);
- return NULL;
- }
-
- for (i = 0; i < 14; i++) {
- mode->channels[i].chan = i + 1;
- mode->channels[i].freq = chan2freq[i];
- mode->channels[i].allowed_bw = HOSTAPD_CHAN_WIDTH_20;
- /* TODO: Get allowed channel list from the driver */
- if (i >= 11)
- mode->channels[i].flag = HOSTAPD_CHAN_DISABLED;
- }
-
- mode->rates[0] = 10;
- mode->rates[1] = 20;
- mode->rates[2] = 55;
- mode->rates[3] = 110;
-
- return mode;
-}
-
-
-static void wpa_driver_hostap_poll_client(void *priv, const u8 *own_addr,
- const u8 *addr, int qos)
-{
- struct ieee80211_hdr hdr;
-
- os_memset(&hdr, 0, sizeof(hdr));
-
- /*
- * WLAN_FC_STYPE_NULLFUNC would be more appropriate,
- * but it is apparently not retried so TX Exc events
- * are not received for it.
- * This is the reason the driver overrides the default
- * handling.
- */
- hdr.frame_control = IEEE80211_FC(WLAN_FC_TYPE_DATA,
- WLAN_FC_STYPE_DATA);
-
- hdr.frame_control |=
- host_to_le16(WLAN_FC_FROMDS);
- os_memcpy(hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
- os_memcpy(hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
- os_memcpy(hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
-
- hostap_send_mlme(priv, (u8 *)&hdr, sizeof(hdr), 0, 0, NULL, 0, 0, 0,
- -1);
-}
-
-
-const struct wpa_driver_ops wpa_driver_hostap_ops = {
- .name = "hostap",
- .desc = "Host AP driver (Intersil Prism2/2.5/3)",
- .set_key = wpa_driver_hostap_set_key,
- .hapd_init = hostap_init,
- .hapd_deinit = hostap_driver_deinit,
- .set_ieee8021x = hostap_set_ieee8021x,
- .set_privacy = hostap_set_privacy,
- .get_seqnum = hostap_get_seqnum,
- .flush = hostap_flush,
- .set_generic_elem = hostap_set_generic_elem,
- .read_sta_data = hostap_read_sta_data,
- .hapd_send_eapol = hostap_send_eapol,
- .sta_set_flags = hostap_sta_set_flags,
- .sta_deauth = hostap_sta_deauth,
- .sta_disassoc = hostap_sta_disassoc,
- .sta_remove = hostap_sta_remove,
- .hapd_set_ssid = hostap_set_ssid,
- .send_mlme = hostap_send_mlme,
- .sta_add = hostap_sta_add,
- .get_inact_sec = hostap_get_inact_sec,
- .sta_clear_stats = hostap_sta_clear_stats,
- .get_hw_feature_data = hostap_get_hw_feature_data,
- .set_ap_wps_ie = hostap_set_ap_wps_ie,
- .set_freq = hostap_set_freq,
- .poll_client = wpa_driver_hostap_poll_client,
-};
projects / thirdparty / hostap.git / commitdiff
