/* * WPA Supplicant - driver interaction with Linux ipw2100/2200 drivers * Copyright (c) 2005 Zhu Yi <yi.zhu@intel.com> * Copyright (c) 2004 Lubomir Gelo <lgelo@cnc.sk> * Copyright (c) 2003-2004, Jouni Malinen <j@w1.fi> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * Alternatively, this software may be distributed under the terms of BSD * license. * * See README and COPYING for more details. * * Please note that ipw2100/2200 drivers change to use generic Linux wireless * extensions if the kernel includes support for WE-18 or newer (Linux 2.6.13 * or newer). driver_wext.c should be used in those cases. */ #include "includes.h" #include <sys/ioctl.h> #include "wireless_copy.h" #include "common.h" #include "driver.h" #include "l2_packet.h" #include "driver_wext.h" #include "wpa_supplicant.h" struct wpa_driver_ipw_data { void *wext; /* private data for driver_wext */ void *ctx; char ifname[IFNAMSIZ + 1]; int sock; }; /* following definitions must be kept in sync with ipw2100.c and ipw2200.c */ #define IPW_IOCTL_WPA_SUPPLICANT SIOCIWFIRSTPRIV+30 #define IPW_CMD_SET_WPA_PARAM 1 #define IPW_CMD_SET_WPA_IE 2 #define IPW_CMD_SET_ENCRYPTION 3 #define IPW_CMD_MLME 4 #define IPW_PARAM_WPA_ENABLED 1 #define IPW_PARAM_TKIP_COUNTERMEASURES 2 #define IPW_PARAM_DROP_UNENCRYPTED 3 #define IPW_PARAM_PRIVACY_INVOKED 4 #define IPW_PARAM_AUTH_ALGS 5 #define IPW_PARAM_IEEE_802_1X 6 #define IPW_MLME_STA_DEAUTH 1 #define IPW_MLME_STA_DISASSOC 2 #define IPW_CRYPT_ERR_UNKNOWN_ALG 2 #define IPW_CRYPT_ERR_UNKNOWN_ADDR 3 #define IPW_CRYPT_ERR_CRYPT_INIT_FAILED 4 #define IPW_CRYPT_ERR_KEY_SET_FAILED 5 #define IPW_CRYPT_ERR_TX_KEY_SET_FAILED 6 #define IPW_CRYPT_ERR_CARD_CONF_FAILED 7 #define IPW_CRYPT_ALG_NAME_LEN 16 struct ipw_param { u32 cmd; u8 sta_addr[ETH_ALEN]; union { struct { u8 name; u32 value; } wpa_param; struct { u32 len; u8 reserved[32]; u8 data[0]; } wpa_ie; struct{ u32 command; u32 reason_code; } mlme; struct { u8 alg[IPW_CRYPT_ALG_NAME_LEN]; u8 set_tx; u32 err; u8 idx; u8 seq[8]; u16 key_len; u8 key[0]; } crypt; } u; }; /* end of ipw2100.c and ipw2200.c code */ static int ipw_ioctl(struct wpa_driver_ipw_data *drv, struct ipw_param *param, int len, int show_err) { struct iwreq iwr; os_memset(&iwr, 0, sizeof(iwr)); os_strncpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); iwr.u.data.pointer = (caddr_t) param; iwr.u.data.length = len; if (ioctl(drv->sock, IPW_IOCTL_WPA_SUPPLICANT, &iwr) < 0) { int ret = errno; if (show_err) perror("ioctl[IPW_IOCTL_WPA_SUPPLICANT]"); return ret; } return 0; } static void ipw_show_set_key_error(struct ipw_param *param) { switch (param->u.crypt.err) { case IPW_CRYPT_ERR_UNKNOWN_ALG: wpa_printf(MSG_INFO, "Unknown algorithm '%s'.", param->u.crypt.alg); wpa_printf(MSG_INFO, "You may need to load kernel module to " "register that algorithm."); wpa_printf(MSG_INFO, "E.g., 'modprobe ieee80211_crypt_wep' for" " WEP."); break; case IPW_CRYPT_ERR_UNKNOWN_ADDR: wpa_printf(MSG_INFO, "Unknown address " MACSTR ".", MAC2STR(param->sta_addr)); break; case IPW_CRYPT_ERR_CRYPT_INIT_FAILED: wpa_printf(MSG_INFO, "Crypt algorithm initialization failed."); break; case IPW_CRYPT_ERR_KEY_SET_FAILED: wpa_printf(MSG_INFO, "Key setting failed."); break; case IPW_CRYPT_ERR_TX_KEY_SET_FAILED: wpa_printf(MSG_INFO, "TX key index setting failed."); break; case IPW_CRYPT_ERR_CARD_CONF_FAILED: wpa_printf(MSG_INFO, "Card configuration failed."); break; } } static int ipw_set_wpa_ie(struct wpa_driver_ipw_data *drv, const u8 *wpa_ie, size_t wpa_ie_len) { struct ipw_param *param; int ret; size_t blen = sizeof(*param) + wpa_ie_len; param = os_zalloc(blen); if (param == NULL) return -1; param->cmd = IPW_CMD_SET_WPA_IE; param->u.wpa_ie.len = wpa_ie_len; os_memcpy(param->u.wpa_ie.data, wpa_ie, wpa_ie_len); ret = ipw_ioctl(drv, param, blen, 1); os_free(param); return ret; } static int ipw_set_wpa_param(struct wpa_driver_ipw_data *drv, u8 name, u32 value) { struct ipw_param param; os_memset(¶m, 0, sizeof(param)); param.cmd = IPW_CMD_SET_WPA_PARAM; param.u.wpa_param.name = name; param.u.wpa_param.value = value; return ipw_ioctl(drv, ¶m, sizeof(param), 1); } static int ipw_mlme(struct wpa_driver_ipw_data *drv, const u8 *addr, int cmd, int reason) { struct ipw_param param; os_memset(¶m, 0, sizeof(param)); os_memcpy(param.sta_addr, addr, ETH_ALEN); param.cmd = IPW_CMD_MLME; param.u.mlme.command = cmd; param.u.mlme.reason_code = reason; return ipw_ioctl(drv, ¶m, sizeof(param), 1); } static int wpa_driver_ipw_set_wpa(void *priv, int enabled) { struct wpa_driver_ipw_data *drv = priv; int ret = 0; wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled); if (!enabled && ipw_set_wpa_ie(drv, NULL, 0) < 0) ret = -1; if (ipw_set_wpa_param(drv, IPW_PARAM_WPA_ENABLED, enabled) < 0) ret = -1; return ret; } static int wpa_driver_ipw_set_key(void *priv, wpa_alg alg, const u8 *addr, int key_idx, int set_tx, const u8 *seq, size_t seq_len, const u8 *key, size_t key_len) { struct wpa_driver_ipw_data *drv = priv; struct ipw_param *param; u8 *buf; size_t blen; int ret = 0; char *alg_name; switch (alg) { case WPA_ALG_NONE: alg_name = "none"; break; case WPA_ALG_WEP: alg_name = "WEP"; break; case WPA_ALG_TKIP: alg_name = "TKIP"; break; case WPA_ALG_CCMP: alg_name = "CCMP"; break; default: return -1; } wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu " "key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx, (unsigned long) seq_len, (unsigned long) key_len); if (seq_len > 8) return -2; blen = sizeof(*param) + key_len; buf = os_zalloc(blen); if (buf == NULL) return -1; param = (struct ipw_param *) buf; param->cmd = IPW_CMD_SET_ENCRYPTION; os_memset(param->sta_addr, 0xff, ETH_ALEN); os_strncpy((char *) param->u.crypt.alg, alg_name, IPW_CRYPT_ALG_NAME_LEN); param->u.crypt.set_tx = set_tx ? 1 : 0; param->u.crypt.idx = key_idx; os_memcpy(param->u.crypt.seq, seq, seq_len); param->u.crypt.key_len = key_len; os_memcpy((u8 *) (param + 1), key, key_len); if (ipw_ioctl(drv, param, blen, 1)) { wpa_printf(MSG_WARNING, "Failed to set encryption."); ipw_show_set_key_error(param); ret = -1; } os_free(buf); return ret; } static int wpa_driver_ipw_set_countermeasures(void *priv, int enabled) { struct wpa_driver_ipw_data *drv = priv; wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled); return ipw_set_wpa_param(drv, IPW_PARAM_TKIP_COUNTERMEASURES, enabled); } static int wpa_driver_ipw_set_drop_unencrypted(void *priv, int enabled) { struct wpa_driver_ipw_data *drv = priv; wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled); return ipw_set_wpa_param(drv, IPW_PARAM_DROP_UNENCRYPTED, enabled); } static int wpa_driver_ipw_deauthenticate(void *priv, const u8 *addr, int reason_code) { struct wpa_driver_ipw_data *drv = priv; return ipw_mlme(drv, addr, IPW_MLME_STA_DEAUTH, reason_code); } static int wpa_driver_ipw_disassociate(void *priv, const u8 *addr, int reason_code) { struct wpa_driver_ipw_data *drv = priv; return ipw_mlme(drv, addr, IPW_MLME_STA_DISASSOC, reason_code); } static int wpa_driver_ipw_associate(void *priv, struct wpa_driver_associate_params *params) { struct wpa_driver_ipw_data *drv = priv; int ret = 0; int unencrypted_eapol; if (ipw_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0) ret = -1; if (wpa_driver_wext_set_ssid(drv->wext, params->ssid, params->ssid_len) < 0) ret = -1; if (wpa_driver_wext_set_bssid(drv->wext, params->bssid) < 0) ret = -1; if (params->key_mgmt_suite == KEY_MGMT_802_1X || params->key_mgmt_suite == KEY_MGMT_PSK) unencrypted_eapol = 0; else unencrypted_eapol = 1; if (ipw_set_wpa_param(drv, IPW_PARAM_IEEE_802_1X, unencrypted_eapol) < 0) { wpa_printf(MSG_DEBUG, "ipw: Failed to configure " "ieee_802_1x param"); } return ret; } static int wpa_driver_ipw_set_auth_alg(void *priv, int auth_alg) { struct wpa_driver_ipw_data *drv = priv; int algs = 0; if (auth_alg & AUTH_ALG_OPEN_SYSTEM) algs |= 1; if (auth_alg & AUTH_ALG_SHARED_KEY) algs |= 2; if (auth_alg & AUTH_ALG_LEAP) algs |= 4; if (algs == 0) algs = 1; /* at least one algorithm should be set */ wpa_printf(MSG_DEBUG, "%s: auth_alg=0x%x", __FUNCTION__, algs); return ipw_set_wpa_param(drv, IPW_PARAM_AUTH_ALGS, algs); } static int wpa_driver_ipw_get_bssid(void *priv, u8 *bssid) { struct wpa_driver_ipw_data *drv = priv; return wpa_driver_wext_get_bssid(drv->wext, bssid); } static int wpa_driver_ipw_get_ssid(void *priv, u8 *ssid) { struct wpa_driver_ipw_data *drv = priv; return wpa_driver_wext_get_ssid(drv->wext, ssid); } static int wpa_driver_ipw_scan(void *priv, const u8 *ssid, size_t ssid_len) { struct wpa_driver_ipw_data *drv = priv; return wpa_driver_wext_scan(drv->wext, ssid, ssid_len); } static int wpa_driver_ipw_get_scan_results(void *priv, struct wpa_scan_result *results, size_t max_size) { struct wpa_driver_ipw_data *drv = priv; return wpa_driver_wext_get_scan_results(drv->wext, results, max_size); } static int wpa_driver_ipw_set_operstate(void *priv, int state) { struct wpa_driver_ipw_data *drv = priv; return wpa_driver_wext_set_operstate(drv->wext, state); } static void * wpa_driver_ipw_init(void *ctx, const char *ifname) { struct wpa_driver_ipw_data *drv; int ver; wpa_printf(MSG_DEBUG, "%s is called", __FUNCTION__); drv = os_zalloc(sizeof(*drv)); if (drv == NULL) return NULL; drv->wext = wpa_driver_wext_init(ctx, ifname); if (drv->wext == NULL) { os_free(drv); return NULL; } ver = wpa_driver_wext_get_version(drv->wext); if (ver >= 18) { wpa_printf(MSG_WARNING, "Linux wireless extensions version %d " "detected.", ver); wpa_printf(MSG_WARNING, "ipw2x00 driver uses driver_wext " "(-Dwext) instead of driver_ipw."); } drv->ctx = ctx; os_strncpy(drv->ifname, ifname, sizeof(drv->ifname)); drv->sock = socket(PF_INET, SOCK_DGRAM, 0); if (drv->sock < 0) { wpa_driver_wext_deinit(drv->wext); os_free(drv); return NULL; } return drv; } static void wpa_driver_ipw_deinit(void *priv) { struct wpa_driver_ipw_data *drv = priv; wpa_driver_wext_deinit(drv->wext); close(drv->sock); os_free(drv); } const struct wpa_driver_ops wpa_driver_ipw_ops = { .name = "ipw", .desc = "Intel ipw2100/2200 driver (old; use wext with Linux 2.6.13 " "or newer)", .get_bssid = wpa_driver_ipw_get_bssid, .get_ssid = wpa_driver_ipw_get_ssid, .set_wpa = wpa_driver_ipw_set_wpa, .set_key = wpa_driver_ipw_set_key, .set_countermeasures = wpa_driver_ipw_set_countermeasures, .set_drop_unencrypted = wpa_driver_ipw_set_drop_unencrypted, .scan = wpa_driver_ipw_scan, .get_scan_results = wpa_driver_ipw_get_scan_results, .deauthenticate = wpa_driver_ipw_deauthenticate, .disassociate = wpa_driver_ipw_disassociate, .associate = wpa_driver_ipw_associate, .set_auth_alg = wpa_driver_ipw_set_auth_alg, .init = wpa_driver_ipw_init, .deinit = wpa_driver_ipw_deinit, .set_operstate = wpa_driver_ipw_set_operstate, };