From ddd86436f4e3643c04b797f858dab95d5f2e4de9 Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 15:00:15 +0000 Subject: fish --- drivers/net/wireless/rtlwifi/cam.c | 348 +++++++++++++++++++++++++++++++++++++ 1 file changed, 348 insertions(+) create mode 100644 drivers/net/wireless/rtlwifi/cam.c (limited to 'drivers/net/wireless/rtlwifi/cam.c') diff --git a/drivers/net/wireless/rtlwifi/cam.c b/drivers/net/wireless/rtlwifi/cam.c new file mode 100644 index 0000000..0e510f7 --- /dev/null +++ b/drivers/net/wireless/rtlwifi/cam.c @@ -0,0 +1,348 @@ +/****************************************************************************** + * + * Copyright(c) 2009-2012 Realtek Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * 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, USA + * + * The full GNU General Public License is included in this distribution in the + * file called LICENSE. + * + * Contact Information: + * wlanfae + * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park, + * Hsinchu 300, Taiwan. + * + * Larry Finger + * + *****************************************************************************/ + +#include +#include "wifi.h" +#include "cam.h" + +void rtl_cam_reset_sec_info(struct ieee80211_hw *hw) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + + rtlpriv->sec.use_defaultkey = false; + rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION; + rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION; + memset(rtlpriv->sec.key_buf, 0, KEY_BUF_SIZE * MAX_KEY_LEN); + memset(rtlpriv->sec.key_len, 0, KEY_BUF_SIZE); + rtlpriv->sec.pairwise_key = NULL; +} + +static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no, + u8 *mac_addr, u8 *key_cont_128, u16 us_config) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + + u32 target_command; + u32 target_content = 0; + u8 entry_i; + + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "key_cont_128: %6phC\n", + key_cont_128); + + for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) { + target_command = entry_i + CAM_CONTENT_COUNT * entry_no; + target_command = target_command | BIT(31) | BIT(16); + + if (entry_i == 0) { + target_content = (u32) (*(mac_addr + 0)) << 16 | + (u32) (*(mac_addr + 1)) << 24 | (u32) us_config; + + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], + target_content); + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], + target_command); + + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE %x: %x\n", + rtlpriv->cfg->maps[WCAMI], target_content); + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, + "The Key ID is %d\n", entry_no); + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE %x: %x\n", + rtlpriv->cfg->maps[RWCAM], target_command); + + } else if (entry_i == 1) { + + target_content = (u32) (*(mac_addr + 5)) << 24 | + (u32) (*(mac_addr + 4)) << 16 | + (u32) (*(mac_addr + 3)) << 8 | + (u32) (*(mac_addr + 2)); + + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], + target_content); + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], + target_command); + + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE A4: %x\n", + target_content); + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE A0: %x\n", + target_command); + + } else { + + target_content = + (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 3)) << + 24 | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 2)) + << 16 | + (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 1)) << 8 + | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 0)); + + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], + target_content); + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], + target_command); + udelay(100); + + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE A4: %x\n", + target_content); + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE A0: %x\n", + target_command); + } + } + + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "after set key, usconfig:%x\n", + us_config); +} + +u8 rtl_cam_add_one_entry(struct ieee80211_hw *hw, u8 *mac_addr, + u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg, + u32 ul_default_key, u8 *key_content) +{ + u32 us_config; + struct rtl_priv *rtlpriv = rtl_priv(hw); + + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, + "EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, ulUseDK=%x MacAddr %pM\n", + ul_entry_idx, ul_key_id, ul_enc_alg, + ul_default_key, mac_addr); + + if (ul_key_id == TOTAL_CAM_ENTRY) { + RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, + "<=== ulKeyId exceed!\n"); + return 0; + } + + if (ul_default_key == 1) { + us_config = CFG_VALID | ((u16) (ul_enc_alg) << 2); + } else { + us_config = CFG_VALID | ((ul_enc_alg) << 2) | ul_key_id; + } + + rtl_cam_program_entry(hw, ul_entry_idx, mac_addr, + key_content, us_config); + + RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "<===\n"); + + return 1; + +} +EXPORT_SYMBOL(rtl_cam_add_one_entry); + +int rtl_cam_delete_one_entry(struct ieee80211_hw *hw, + u8 *mac_addr, u32 ul_key_id) +{ + u32 ul_command; + struct rtl_priv *rtlpriv = rtl_priv(hw); + + RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "key_idx:%d\n", ul_key_id); + + ul_command = ul_key_id * CAM_CONTENT_COUNT; + ul_command = ul_command | BIT(31) | BIT(16); + + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0); + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command); + + RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, + "rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0); + RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, + "rtl_cam_delete_one_entry(): WRITE A0: %x\n", ul_command); + + return 0; + +} +EXPORT_SYMBOL(rtl_cam_delete_one_entry); + +void rtl_cam_reset_all_entry(struct ieee80211_hw *hw) +{ + u32 ul_command; + struct rtl_priv *rtlpriv = rtl_priv(hw); + + ul_command = BIT(31) | BIT(30); + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command); +} +EXPORT_SYMBOL(rtl_cam_reset_all_entry); + +void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + + u32 ul_command; + u32 ul_content; + u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES]; + + switch (rtlpriv->sec.pairwise_enc_algorithm) { + case WEP40_ENCRYPTION: + ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40]; + break; + case WEP104_ENCRYPTION: + ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104]; + break; + case TKIP_ENCRYPTION: + ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP]; + break; + case AESCCMP_ENCRYPTION: + ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES]; + break; + default: + ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES]; + } + + ul_content = (uc_index & 3) | ((u16) (ul_enc_algo) << 2); + + ul_content |= BIT(15); + ul_command = CAM_CONTENT_COUNT * uc_index; + ul_command = ul_command | BIT(31) | BIT(16); + + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content); + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command); + + RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, + "rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content); + RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, + "rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command); +} +EXPORT_SYMBOL(rtl_cam_mark_invalid); + +void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + + u32 ul_command; + u32 ul_content; + u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES]; + u8 entry_i; + + switch (rtlpriv->sec.pairwise_enc_algorithm) { + case WEP40_ENCRYPTION: + ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40]; + break; + case WEP104_ENCRYPTION: + ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104]; + break; + case TKIP_ENCRYPTION: + ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP]; + break; + case AESCCMP_ENCRYPTION: + ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES]; + break; + default: + ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES]; + } + + for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) { + + if (entry_i == 0) { + ul_content = + (uc_index & 0x03) | ((u16) (ul_encalgo) << 2); + ul_content |= BIT(15); + + } else { + ul_content = 0; + } + + ul_command = CAM_CONTENT_COUNT * uc_index + entry_i; + ul_command = ul_command | BIT(31) | BIT(16); + + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content); + rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command); + + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, + "rtl_cam_empty_entry(): WRITE A4: %x\n", + ul_content); + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, + "rtl_cam_empty_entry(): WRITE A0: %x\n", + ul_command); + } + +} +EXPORT_SYMBOL(rtl_cam_empty_entry); + +u8 rtl_cam_get_free_entry(struct ieee80211_hw *hw, u8 *sta_addr) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + u32 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> 4; + u8 entry_idx = 0; + u8 i, *addr; + + if (NULL == sta_addr) { + RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG, "sta_addr is NULL\n"); + return TOTAL_CAM_ENTRY; + } + /* Does STA already exist? */ + for (i = 4; i < TOTAL_CAM_ENTRY; i++) { + addr = rtlpriv->sec.hwsec_cam_sta_addr[i]; + if (memcmp(addr, sta_addr, ETH_ALEN) == 0) + return i; + } + /* Get a free CAM entry. */ + for (entry_idx = 4; entry_idx < TOTAL_CAM_ENTRY; entry_idx++) { + if ((bitmap & BIT(0)) == 0) { + RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG, + "-----hwsec_cam_bitmap: 0x%x entry_idx=%d\n", + rtlpriv->sec.hwsec_cam_bitmap, entry_idx); + rtlpriv->sec.hwsec_cam_bitmap |= BIT(0) << entry_idx; + memcpy(rtlpriv->sec.hwsec_cam_sta_addr[entry_idx], + sta_addr, ETH_ALEN); + return entry_idx; + } + bitmap = bitmap >> 1; + } + return TOTAL_CAM_ENTRY; +} +EXPORT_SYMBOL(rtl_cam_get_free_entry); + +void rtl_cam_del_entry(struct ieee80211_hw *hw, u8 *sta_addr) +{ + struct rtl_priv *rtlpriv = rtl_priv(hw); + u32 bitmap; + u8 i, *addr; + + if (NULL == sta_addr) { + RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG, "sta_addr is NULL\n"); + } + + if (is_zero_ether_addr(sta_addr)) { + RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG, + "sta_addr is %pM\n", sta_addr); + return; + } + /* Does STA already exist? */ + for (i = 4; i < TOTAL_CAM_ENTRY; i++) { + addr = rtlpriv->sec.hwsec_cam_sta_addr[i]; + bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> i; + if (((bitmap & BIT(0)) == BIT(0)) && + (memcmp(addr, sta_addr, ETH_ALEN) == 0)) { + /* Remove from HW Security CAM */ + eth_zero_addr(rtlpriv->sec.hwsec_cam_sta_addr[i]); + rtlpriv->sec.hwsec_cam_bitmap &= ~(BIT(0) << i); + RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, + "del CAM entry %d\n", i); + } + } + return; +} +EXPORT_SYMBOL(rtl_cam_del_entry); -- cgit v1.2.3