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path: root/drivers/net/wireless/rtlwifi/cam.c
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Diffstat (limited to 'drivers/net/wireless/rtlwifi/cam.c')
-rw-r--r--drivers/net/wireless/rtlwifi/cam.c151
1 files changed, 104 insertions, 47 deletions
diff --git a/drivers/net/wireless/rtlwifi/cam.c b/drivers/net/wireless/rtlwifi/cam.c
index 52c9c1367ca..0276153c72c 100644
--- a/drivers/net/wireless/rtlwifi/cam.c
+++ b/drivers/net/wireless/rtlwifi/cam.c
@@ -1,6 +1,6 @@
/******************************************************************************
*
- * Copyright(c) 2009-2010 Realtek Corporation.
+ * 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
@@ -23,8 +23,11 @@
* Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
* Hsinchu 300, Taiwan.
*
+ * Larry Finger <Larry.Finger@lwfinger.net>
+ *
*****************************************************************************/
+#include <linux/export.h>
#include "wifi.h"
#include "cam.h"
@@ -49,11 +52,8 @@ static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
u32 target_content = 0;
u8 entry_i;
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
- ("key_cont_128:\n %x:%x:%x:%x:%x:%x\n",
- key_cont_128[0], key_cont_128[1],
- key_cont_128[2], key_cont_128[3],
- key_cont_128[4], key_cont_128[5]));
+ 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;
@@ -68,16 +68,12 @@ static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
target_command);
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
- ("rtl_cam_program_entry(): "
- "WRITE %x: %x\n",
- rtlpriv->cfg->maps[WCAMI], target_content));
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
- ("The Key ID is %d\n", entry_no));
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
- ("rtl_cam_program_entry(): "
- "WRITE %x: %x\n",
- 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) {
@@ -91,12 +87,10 @@ static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
target_command);
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
- ("rtl_cam_program_entry(): WRITE A4: %x\n",
- target_content));
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
- ("rtl_cam_program_entry(): WRITE A0: %x\n",
- 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 {
@@ -113,17 +107,15 @@ static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
target_command);
udelay(100);
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
- ("rtl_cam_program_entry(): WRITE A4: %x\n",
- target_content));
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
- ("rtl_cam_program_entry(): WRITE A0: %x\n",
- 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);
}
}
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
- ("after set key, usconfig:%x\n", us_config));
+ 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,
@@ -133,15 +125,14 @@ u8 rtl_cam_add_one_entry(struct ieee80211_hw *hw, u8 *mac_addr,
u32 us_config;
struct rtl_priv *rtlpriv = rtl_priv(hw);
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
- ("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, "
- "ulUseDK=%x MacAddr" MAC_FMT "\n",
- ul_entry_idx, ul_key_id, ul_enc_alg,
- ul_default_key, MAC_ARG(mac_addr)));
+ 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"));
+ "<=== ulKeyId exceed!\n");
return 0;
}
@@ -152,9 +143,9 @@ u8 rtl_cam_add_one_entry(struct ieee80211_hw *hw, u8 *mac_addr,
}
rtl_cam_program_entry(hw, ul_entry_idx, mac_addr,
- (u8 *) key_content, us_config);
+ key_content, us_config);
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("<===\n"));
+ RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "<===\n");
return 1;
@@ -167,7 +158,7 @@ int rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
u32 ul_command;
struct rtl_priv *rtlpriv = rtl_priv(hw);
- RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("key_idx:%d\n", ul_key_id));
+ 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);
@@ -176,9 +167,9 @@ int rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
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));
+ "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));
+ "rtl_cam_delete_one_entry(): WRITE A0: %x\n", ul_command);
return 0;
@@ -230,9 +221,9 @@ void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
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));
+ "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));
+ "rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command);
}
EXPORT_SYMBOL(rtl_cam_mark_invalid);
@@ -280,12 +271,78 @@ void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
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));
+ "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));
+ "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 (ether_addr_equal_unaligned(addr, sta_addr))
+ 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)) &&
+ (ether_addr_equal_unaligned(addr, sta_addr))) {
+ /* 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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 16:27:58 +0000