/* * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * File: hostap.c * * Purpose: handle hostap deamon ioctl input/out functions * * Author: Lyndon Chen * * Date: Oct. 20, 2003 * * Functions: * * Revision History: * */ #include "hostap.h" #include "iocmd.h" #include "mac.h" #include "card.h" #include "baseband.h" #include "wpactl.h" #include "key.h" #define VIAWGET_HOSTAPD_MAX_BUF_SIZE 1024 #define HOSTAP_CRYPT_FLAG_SET_TX_KEY BIT0 #define HOSTAP_CRYPT_ERR_UNKNOWN_ADDR 3 #define HOSTAP_CRYPT_ERR_KEY_SET_FAILED 5 /*--------------------- Static Definitions -------------------------*/ /*--------------------- Static Classes ----------------------------*/ /*--------------------- Static Functions --------------------------*/ /*--------------------- Export Variables --------------------------*/ /* * Description: * register net_device (AP) for hostap deamon * * Parameters: * In: * pDevice - * rtnl_locked - * Out: * * Return Value: * */ static int hostap_enable_hostapd(struct vnt_private *pDevice, int rtnl_locked) { struct vnt_private *apdev_priv; struct net_device *dev = pDevice->dev; int ret; const struct net_device_ops apdev_netdev_ops = { .ndo_start_xmit = pDevice->tx_80211, }; pr_debug("%s: Enabling hostapd mode\n", dev->name); pDevice->apdev = alloc_etherdev(sizeof(*apdev_priv)); if (pDevice->apdev == NULL) return -ENOMEM; apdev_priv = netdev_priv(pDevice->apdev); *apdev_priv = *pDevice; eth_hw_addr_inherit(pDevice->apdev, dev); pDevice->apdev->netdev_ops = &apdev_netdev_ops; pDevice->apdev->type = ARPHRD_IEEE80211; pDevice->apdev->base_addr = dev->base_addr; pDevice->apdev->irq = dev->irq; pDevice->apdev->mem_start = dev->mem_start; pDevice->apdev->mem_end = dev->mem_end; sprintf(pDevice->apdev->name, "%sap", dev->name); if (rtnl_locked) ret = register_netdevice(pDevice->apdev); else ret = register_netdev(pDevice->apdev); if (ret) { pr_debug("%s: register_netdevice(AP) failed!\n", dev->name); free_netdev(pDevice->apdev); pDevice->apdev = NULL; return -1; } pr_debug("%s: Registered netdevice %s for AP management\n", dev->name, pDevice->apdev->name); KeyvInitTable(&pDevice->sKey, pDevice->PortOffset); return 0; } /* * Description: * unregister net_device(AP) * * Parameters: * In: * pDevice - * rtnl_locked - * Out: * * Return Value: * */ static int hostap_disable_hostapd(struct vnt_private *pDevice, int rtnl_locked) { pr_debug("%s: disabling hostapd mode\n", pDevice->dev->name); if (pDevice->apdev && pDevice->apdev->name && pDevice->apdev->name[0]) { if (rtnl_locked) unregister_netdevice(pDevice->apdev); else unregister_netdev(pDevice->apdev); pr_debug("%s: Netdevice %s unregistered\n", pDevice->dev->name, pDevice->apdev->name); } if (pDevice->apdev) free_netdev(pDevice->apdev); pDevice->apdev = NULL; pDevice->bEnable8021x = false; pDevice->bEnableHostWEP = false; pDevice->bEncryptionEnable = false; /* 4.2007-0118-03,<Add> by EinsnLiu */ /* execute some clear work */ pDevice->pMgmt->byCSSPK = KEY_CTL_NONE; pDevice->pMgmt->byCSSGK = KEY_CTL_NONE; KeyvInitTable(&pDevice->sKey, pDevice->PortOffset); return 0; } /* * Description: * Set enable/disable hostapd mode * * Parameters: * In: * pDevice - * rtnl_locked - * Out: * * Return Value: * */ int vt6655_hostap_set_hostapd(struct vnt_private *pDevice, int val, int rtnl_locked) { if (val < 0 || val > 1) return -EINVAL; if (pDevice->bEnableHostapd == val) return 0; pDevice->bEnableHostapd = val; if (val) return hostap_enable_hostapd(pDevice, rtnl_locked); else return hostap_disable_hostapd(pDevice, rtnl_locked); } /* * Description: * remove station function supported for hostap deamon * * Parameters: * In: * pDevice - * param - * Out: * * Return Value: * */ static int hostap_remove_sta(struct vnt_private *pDevice, struct viawget_hostapd_param *param) { unsigned int uNodeIndex; if (BSSDBbIsSTAInNodeDB(pDevice->pMgmt, param->sta_addr, &uNodeIndex)) BSSvRemoveOneNode(pDevice, uNodeIndex); else return -ENOENT; return 0; } /* * Description: * add a station from hostap deamon * * Parameters: * In: * pDevice - * param - * Out: * * Return Value: * */ static int hostap_add_sta(struct vnt_private *pDevice, struct viawget_hostapd_param *param) { PSMgmtObject pMgmt = pDevice->pMgmt; unsigned int uNodeIndex; if (!BSSDBbIsSTAInNodeDB(pMgmt, param->sta_addr, &uNodeIndex)) BSSvCreateOneNode(pDevice, &uNodeIndex); memcpy(pMgmt->sNodeDBTable[uNodeIndex].abyMACAddr, param->sta_addr, WLAN_ADDR_LEN); pMgmt->sNodeDBTable[uNodeIndex].eNodeState = NODE_ASSOC; pMgmt->sNodeDBTable[uNodeIndex].wCapInfo = param->u.add_sta.capability; /* TODO listenInterval */ pMgmt->sNodeDBTable[uNodeIndex].bPSEnable = false; pMgmt->sNodeDBTable[uNodeIndex].bySuppRate = param->u.add_sta.tx_supp_rates; /* set max tx rate */ pMgmt->sNodeDBTable[uNodeIndex].wTxDataRate = pMgmt->sNodeDBTable[uNodeIndex].wMaxSuppRate; /* set max basic rate */ pMgmt->sNodeDBTable[uNodeIndex].wMaxBasicRate = RATE_2M; /* Todo: check sta preamble, if ap can't support, set status code */ pMgmt->sNodeDBTable[uNodeIndex].bShortPreamble = WLAN_GET_CAP_INFO_SHORTPREAMBLE(pMgmt->sNodeDBTable[uNodeIndex].wCapInfo); pMgmt->sNodeDBTable[uNodeIndex].wAID = (unsigned short)param->u.add_sta.aid; pMgmt->sNodeDBTable[uNodeIndex].ulLastRxJiffer = jiffies; pr_debug("Add STA AID= %d\n", pMgmt->sNodeDBTable[uNodeIndex].wAID); pr_debug("MAC=%pM\n", param->sta_addr); pr_debug("Max Support rate = %d\n", pMgmt->sNodeDBTable[uNodeIndex].wMaxSuppRate); return 0; } /* * Description: * get station info * * Parameters: * In: * pDevice - * param - * Out: * * Return Value: * */ static int hostap_get_info_sta(struct vnt_private *pDevice, struct viawget_hostapd_param *param) { PSMgmtObject pMgmt = pDevice->pMgmt; unsigned int uNodeIndex; if (BSSDBbIsSTAInNodeDB(pMgmt, param->sta_addr, &uNodeIndex)) { param->u.get_info_sta.inactive_sec = (jiffies - pMgmt->sNodeDBTable[uNodeIndex].ulLastRxJiffer) / HZ; } else { return -ENOENT; } return 0; } /* * Description: * set station flag * * Parameters: * In: * pDevice - * param - * Out: * * Return Value: * */ static int hostap_set_flags_sta(struct vnt_private *pDevice, struct viawget_hostapd_param *param) { PSMgmtObject pMgmt = pDevice->pMgmt; unsigned int uNodeIndex; if (BSSDBbIsSTAInNodeDB(pMgmt, param->sta_addr, &uNodeIndex)) { pMgmt->sNodeDBTable[uNodeIndex].dwFlags |= param->u.set_flags_sta.flags_or; pMgmt->sNodeDBTable[uNodeIndex].dwFlags &= param->u.set_flags_sta.flags_and; pr_debug(" dwFlags = %x\n", (unsigned int)pMgmt->sNodeDBTable[uNodeIndex].dwFlags); } else { return -ENOENT; } return 0; } /* * Description: * set generic element (wpa ie) * * Parameters: * In: * pDevice - * param - * Out: * * Return Value: * */ static int hostap_set_generic_element(struct vnt_private *pDevice, struct viawget_hostapd_param *param) { PSMgmtObject pMgmt = pDevice->pMgmt; if (param->u.generic_elem.len > sizeof(pMgmt->abyWPAIE)) return -EINVAL; memcpy(pMgmt->abyWPAIE, param->u.generic_elem.data, param->u.generic_elem.len ); pMgmt->wWPAIELen = param->u.generic_elem.len; pr_debug("pMgmt->wWPAIELen = %d\n", pMgmt->wWPAIELen); /* disable wpa */ if (pMgmt->wWPAIELen == 0) { pMgmt->eAuthenMode = WMAC_AUTH_OPEN; pr_debug(" No WPAIE, Disable WPA\n"); } else { /* enable wpa */ if ((pMgmt->abyWPAIE[0] == WLAN_EID_RSN_WPA) || (pMgmt->abyWPAIE[0] == WLAN_EID_RSN)) { pMgmt->eAuthenMode = WMAC_AUTH_WPANONE; pr_debug("Set WPAIE enable WPA\n"); } else return -EINVAL; } return 0; } /* * Description: * flush station nodes table. * * Parameters: * In: * pDevice - * Out: * * Return Value: * */ static void hostap_flush_sta(struct vnt_private *pDevice) { /* reserved node index =0 for multicast node. */ BSSvClearNodeDBTable(pDevice, 1); pDevice->uAssocCount = 0; } /* * Description: * set each stations encryption key * * Parameters: * In: * pDevice - * param - * Out: * * Return Value: * */ static int hostap_set_encryption(struct vnt_private *pDevice, struct viawget_hostapd_param *param, int param_len) { PSMgmtObject pMgmt = pDevice->pMgmt; unsigned long dwKeyIndex = 0; unsigned char abyKey[MAX_KEY_LEN]; unsigned char abySeq[MAX_KEY_LEN]; u64 KeyRSC; unsigned char byKeyDecMode = KEY_CTL_WEP; int iNodeIndex = -1; int ii; bool bKeyTableFull = false; unsigned short wKeyCtl = 0; param->u.crypt.err = 0; if (param->u.crypt.alg > WPA_ALG_CCMP) return -EINVAL; if ((param->u.crypt.idx > 3) || (param->u.crypt.key_len > MAX_KEY_LEN)) { param->u.crypt.err = HOSTAP_CRYPT_ERR_KEY_SET_FAILED; pr_debug(" HOSTAP_CRYPT_ERR_KEY_SET_FAILED\n"); return -EINVAL; } if (is_broadcast_ether_addr(param->sta_addr)) { if (param->u.crypt.idx >= MAX_GROUP_KEY) return -EINVAL; iNodeIndex = 0; } else { if (BSSDBbIsSTAInNodeDB(pMgmt, param->sta_addr, &iNodeIndex) == false) { param->u.crypt.err = HOSTAP_CRYPT_ERR_UNKNOWN_ADDR; pr_debug(" HOSTAP_CRYPT_ERR_UNKNOWN_ADDR\n"); return -EINVAL; } } pr_debug(" hostap_set_encryption: sta_index %d\n", iNodeIndex); pr_debug(" hostap_set_encryption: alg %d\n", param->u.crypt.alg); if (param->u.crypt.alg == WPA_ALG_NONE) { if (pMgmt->sNodeDBTable[iNodeIndex].bOnFly) { if (!KeybRemoveKey(&(pDevice->sKey), param->sta_addr, pMgmt->sNodeDBTable[iNodeIndex].dwKeyIndex, pDevice->PortOffset)) { pr_debug("KeybRemoveKey fail\n"); } pMgmt->sNodeDBTable[iNodeIndex].bOnFly = false; } pMgmt->sNodeDBTable[iNodeIndex].byKeyIndex = 0; pMgmt->sNodeDBTable[iNodeIndex].dwKeyIndex = 0; pMgmt->sNodeDBTable[iNodeIndex].uWepKeyLength = 0; pMgmt->sNodeDBTable[iNodeIndex].KeyRSC = 0; pMgmt->sNodeDBTable[iNodeIndex].dwTSC47_16 = 0; pMgmt->sNodeDBTable[iNodeIndex].wTSC15_0 = 0; pMgmt->sNodeDBTable[iNodeIndex].byCipherSuite = 0; memset(&pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[0], 0, MAX_KEY_LEN ); return 0; } memcpy(abyKey, param->u.crypt.key, param->u.crypt.key_len); /* copy to node key tbl */ pMgmt->sNodeDBTable[iNodeIndex].byKeyIndex = param->u.crypt.idx; pMgmt->sNodeDBTable[iNodeIndex].uWepKeyLength = param->u.crypt.key_len; memcpy(&pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[0], param->u.crypt.key, param->u.crypt.key_len ); dwKeyIndex = (unsigned long)(param->u.crypt.idx); if (param->u.crypt.flags & HOSTAP_CRYPT_FLAG_SET_TX_KEY) { pDevice->byKeyIndex = (unsigned char)dwKeyIndex; pDevice->bTransmitKey = true; dwKeyIndex |= (1 << 31); } if (param->u.crypt.alg == WPA_ALG_WEP) { if ((pDevice->bEnable8021x == false) || (iNodeIndex == 0)) { KeybSetDefaultKey(&(pDevice->sKey), dwKeyIndex & ~(BIT30 | USE_KEYRSC), param->u.crypt.key_len, NULL, abyKey, KEY_CTL_WEP, pDevice->PortOffset, pDevice->byLocalID); } else { /* 8021x enable, individual key */ dwKeyIndex |= (1 << 30); /* set pairwise key */ if (KeybSetKey(&(pDevice->sKey), ¶m->sta_addr[0], dwKeyIndex & ~(USE_KEYRSC), param->u.crypt.key_len, (u64 *) &KeyRSC, (unsigned char *)abyKey, KEY_CTL_WEP, pDevice->PortOffset, pDevice->byLocalID)) { pMgmt->sNodeDBTable[iNodeIndex].bOnFly = true; } else { /* Key Table Full */ pMgmt->sNodeDBTable[iNodeIndex].bOnFly = false; bKeyTableFull = true; } } pDevice->eEncryptionStatus = Ndis802_11Encryption1Enabled; pDevice->bEncryptionEnable = true; pMgmt->byCSSPK = KEY_CTL_WEP; pMgmt->byCSSGK = KEY_CTL_WEP; pMgmt->sNodeDBTable[iNodeIndex].byCipherSuite = KEY_CTL_WEP; pMgmt->sNodeDBTable[iNodeIndex].dwKeyIndex = dwKeyIndex; return 0; } if (param->u.crypt.seq) { memcpy(&abySeq, param->u.crypt.seq, 8); for (ii = 0; ii < 8; ii++) KeyRSC |= (u64)abySeq[ii] << (ii * 8); dwKeyIndex |= 1 << 29; pMgmt->sNodeDBTable[iNodeIndex].KeyRSC = KeyRSC; } if (param->u.crypt.alg == WPA_ALG_TKIP) { if (param->u.crypt.key_len != MAX_KEY_LEN) return -EINVAL; pDevice->eEncryptionStatus = Ndis802_11Encryption2Enabled; byKeyDecMode = KEY_CTL_TKIP; pMgmt->byCSSPK = KEY_CTL_TKIP; pMgmt->byCSSGK = KEY_CTL_TKIP; } if (param->u.crypt.alg == WPA_ALG_CCMP) { if ((param->u.crypt.key_len != AES_KEY_LEN) || (pDevice->byLocalID <= REV_ID_VT3253_A1)) return -EINVAL; pDevice->eEncryptionStatus = Ndis802_11Encryption3Enabled; byKeyDecMode = KEY_CTL_CCMP; pMgmt->byCSSPK = KEY_CTL_CCMP; pMgmt->byCSSGK = KEY_CTL_CCMP; } if (iNodeIndex == 0) { KeybSetDefaultKey(&(pDevice->sKey), dwKeyIndex, param->u.crypt.key_len, (u64 *) &KeyRSC, abyKey, byKeyDecMode, pDevice->PortOffset, pDevice->byLocalID); pMgmt->sNodeDBTable[iNodeIndex].bOnFly = true; } else { dwKeyIndex |= (1 << 30); /* set pairwise key */ if (KeybSetKey(&(pDevice->sKey), ¶m->sta_addr[0], dwKeyIndex, param->u.crypt.key_len, (u64 *) &KeyRSC, (unsigned char *)abyKey, byKeyDecMode, pDevice->PortOffset, pDevice->byLocalID)) { pMgmt->sNodeDBTable[iNodeIndex].bOnFly = true; } else { /* Key Table Full */ pMgmt->sNodeDBTable[iNodeIndex].bOnFly = false; bKeyTableFull = true; pr_debug(" Key Table Full\n"); } } if (bKeyTableFull) { wKeyCtl &= 0x7F00; /* clear all key control filed */ wKeyCtl |= (byKeyDecMode << 4); wKeyCtl |= (byKeyDecMode); wKeyCtl |= 0x0044; /* use group key for all address */ wKeyCtl |= 0x4000; /* disable KeyTable[MAX_KEY_TABLE-1] on-fly to genernate rx int */ MACvSetDefaultKeyCtl(pDevice->PortOffset, wKeyCtl, MAX_KEY_TABLE-1, pDevice->byLocalID); } pr_debug(" Set key sta_index= %d\n", iNodeIndex); pr_debug(" tx_index=%d len=%d\n", param->u.crypt.idx, param->u.crypt.key_len); pr_debug(" key=%x-%x-%x-%x-%x-xxxxx\n", pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[0], pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[1], pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[2], pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[3], pMgmt->sNodeDBTable[iNodeIndex].abyWepKey[4]); /* set wep key */ pDevice->bEncryptionEnable = true; pMgmt->sNodeDBTable[iNodeIndex].byCipherSuite = byKeyDecMode; pMgmt->sNodeDBTable[iNodeIndex].dwKeyIndex = dwKeyIndex; pMgmt->sNodeDBTable[iNodeIndex].dwTSC47_16 = 0; pMgmt->sNodeDBTable[iNodeIndex].wTSC15_0 = 0; return 0; } /* * Description: * get each stations encryption key * * Parameters: * In: * pDevice - * param - * Out: * * Return Value: * */ static int hostap_get_encryption(struct vnt_private *pDevice, struct viawget_hostapd_param *param, int param_len) { PSMgmtObject pMgmt = pDevice->pMgmt; int ii; int iNodeIndex = 0; param->u.crypt.err = 0; if (is_broadcast_ether_addr(param->sta_addr)) { iNodeIndex = 0; } else { if (BSSDBbIsSTAInNodeDB(pMgmt, param->sta_addr, &iNodeIndex) == false) { param->u.crypt.err = HOSTAP_CRYPT_ERR_UNKNOWN_ADDR; pr_debug("hostap_get_encryption: HOSTAP_CRYPT_ERR_UNKNOWN_ADDR\n"); return -EINVAL; } } pr_debug("hostap_get_encryption: %d\n", iNodeIndex); memset(param->u.crypt.seq, 0, 8); for (ii = 0; ii < 8; ii++) param->u.crypt.seq[ii] = (unsigned char)pMgmt->sNodeDBTable[iNodeIndex].KeyRSC >> (ii * 8); return 0; } /* * Description: * vt6655_hostap_ioctl main function supported for hostap deamon. * * Parameters: * In: * pDevice - * iw_point - * Out: * * Return Value: * */ int vt6655_hostap_ioctl(struct vnt_private *pDevice, struct iw_point *p) { struct viawget_hostapd_param *param; int ret = 0; int ap_ioctl = 0; if (p->length < sizeof(struct viawget_hostapd_param) || p->length > VIAWGET_HOSTAPD_MAX_BUF_SIZE || !p->pointer) return -EINVAL; param = kmalloc((int)p->length, GFP_KERNEL); if (param == NULL) return -ENOMEM; if (copy_from_user(param, p->pointer, p->length)) { ret = -EFAULT; goto out; } switch (param->cmd) { case VIAWGET_HOSTAPD_SET_ENCRYPTION: pr_debug("VIAWGET_HOSTAPD_SET_ENCRYPTION\n"); spin_lock_irq(&pDevice->lock); ret = hostap_set_encryption(pDevice, param, p->length); spin_unlock_irq(&pDevice->lock); break; case VIAWGET_HOSTAPD_GET_ENCRYPTION: pr_debug("VIAWGET_HOSTAPD_GET_ENCRYPTION\n"); spin_lock_irq(&pDevice->lock); ret = hostap_get_encryption(pDevice, param, p->length); spin_unlock_irq(&pDevice->lock); break; case VIAWGET_HOSTAPD_SET_ASSOC_AP_ADDR: pr_debug("VIAWGET_HOSTAPD_SET_ASSOC_AP_ADDR\n"); ret = -EOPNOTSUPP; goto out; case VIAWGET_HOSTAPD_FLUSH: pr_debug("VIAWGET_HOSTAPD_FLUSH\n"); spin_lock_irq(&pDevice->lock); hostap_flush_sta(pDevice); spin_unlock_irq(&pDevice->lock); break; case VIAWGET_HOSTAPD_ADD_STA: pr_debug("VIAWGET_HOSTAPD_ADD_STA\n"); spin_lock_irq(&pDevice->lock); ret = hostap_add_sta(pDevice, param); spin_unlock_irq(&pDevice->lock); break; case VIAWGET_HOSTAPD_REMOVE_STA: pr_debug("VIAWGET_HOSTAPD_REMOVE_STA\n"); spin_lock_irq(&pDevice->lock); ret = hostap_remove_sta(pDevice, param); spin_unlock_irq(&pDevice->lock); break; case VIAWGET_HOSTAPD_GET_INFO_STA: pr_debug("VIAWGET_HOSTAPD_GET_INFO_STA\n"); ret = hostap_get_info_sta(pDevice, param); ap_ioctl = 1; break; case VIAWGET_HOSTAPD_SET_FLAGS_STA: pr_debug("VIAWGET_HOSTAPD_SET_FLAGS_STA\n"); ret = hostap_set_flags_sta(pDevice, param); break; case VIAWGET_HOSTAPD_MLME: pr_debug("VIAWGET_HOSTAPD_MLME\n"); ret = -EOPNOTSUPP; goto out; case VIAWGET_HOSTAPD_SET_GENERIC_ELEMENT: pr_debug("VIAWGET_HOSTAPD_SET_GENERIC_ELEMENT\n"); ret = hostap_set_generic_element(pDevice, param); break; case VIAWGET_HOSTAPD_SCAN_REQ: pr_debug("VIAWGET_HOSTAPD_SCAN_REQ\n"); ret = -EOPNOTSUPP; goto out; case VIAWGET_HOSTAPD_STA_CLEAR_STATS: pr_debug("VIAWGET_HOSTAPD_STA_CLEAR_STATS\n"); ret = -EOPNOTSUPP; goto out; default: pr_debug("vt6655_hostap_ioctl: unknown cmd=%d\n", (int)param->cmd); ret = -EOPNOTSUPP; goto out; } if ((ret == 0) && ap_ioctl) { if (copy_to_user(p->pointer, param, p->length)) ret = -EFAULT; } out: kfree(param); return ret; }