[PATCH] ieee80211: Add QoS (WME) support to the ieee80211 subsystem

tree a3ad796273e98036eb0e9fc063225070fa24508a
parent 1b9c0aeb377abf8e4a43a86cff42382f74ca0259
author Mohamed Abbas <mabbas@linux.intel.com> 1124447069 -0500
committer James Ketrenos <jketreno@linux.intel.com> 1127313435 -0500

Add QoS (WME) support to the ieee80211 subsystem.

NOTE: This requires drivers that use the ieee80211 hard_start_xmit
(ipw2100 and ipw2200) to add the priority parameter to their callback.

Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 99 insertions, 4 deletions

diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h
index 46466f5a2b45..72bd2b17eeb4 100644
--- a/include/net/ieee80211.h
+++ b/include/net/ieee80211.h
@@ -92,6 +92,7 @@
 #define IEEE80211_STYPE_CFACK           0x0050
 #define IEEE80211_STYPE_CFPOLL          0x0060
 #define IEEE80211_STYPE_CFACKPOLL       0x0070
+#define IEEE80211_STYPE_QOS_DATA        0x0080
 
 #define IEEE80211_SCTL_FRAG             0x000F
 #define IEEE80211_SCTL_SEQ              0xFFF0
@@ -153,6 +154,7 @@ const char *escape_essid(const char *essid, u8 essid_len);
 
 #define IEEE80211_DL_TX            (1<<8)
 #define IEEE80211_DL_RX            (1<<9)
+#define IEEE80211_DL_QOS           (1<<31)
 
 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
@@ -166,6 +168,7 @@ const char *escape_essid(const char *essid, u8 essid_len);
 #define IEEE80211_DEBUG_DROP(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
 #define IEEE80211_DEBUG_TX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
 #define IEEE80211_DEBUG_RX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
+#define IEEE80211_DEBUG_QOS(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
 #include <linux/netdevice.h>
 #include <linux/wireless.h>
 #include <linux/if_arp.h>       /* ARPHRD_ETHER */
@@ -493,6 +496,7 @@ enum ieee80211_mfie {
         MFIE_TYPE_RSN = 48,
         MFIE_TYPE_RATES_EX = 50,
         MFIE_TYPE_GENERIC = 221,
+        MFIE_TYPE_QOS_PARAMETER = 222,
 };
 
 /* Minimal header; can be used for passing 802.11 frames with sufficient
@@ -540,6 +544,29 @@ struct ieee80211_hdr_4addr {
         u8 payload[0];
 } __attribute__ ((packed));
 
+struct ieee80211_hdr_3addrqos {
+        u16 frame_ctl;
+        u16 duration_id;
+        u8 addr1[ETH_ALEN];
+        u8 addr2[ETH_ALEN];
+        u8 addr3[ETH_ALEN];
+        u16 seq_ctl;
+        u8 payload[0];
+        u16 qos_ctl;
+} __attribute__ ((packed));
+
+struct ieee80211_hdr_4addrqos {
+        u16 frame_ctl;
+        u16 duration_id;
+        u8 addr1[ETH_ALEN];
+        u8 addr2[ETH_ALEN];
+        u8 addr3[ETH_ALEN];
+        u16 seq_ctl;
+        u8 addr4[ETH_ALEN];
+        u8 payload[0];
+        u16 qos_ctl;
+} __attribute__ ((packed));
+
 struct ieee80211_info_element {
         u8 id;
         u8 len;
@@ -641,9 +668,68 @@ struct ieee80211_txb {
 
 #define MAX_WPA_IE_LEN 64
 
-#define NETWORK_EMPTY_ESSID (1<<0)
-#define NETWORK_HAS_OFDM    (1<<1)
-#define NETWORK_HAS_CCK     (1<<2)
+#define NETWORK_EMPTY_ESSID    (1<<0)
+#define NETWORK_HAS_OFDM       (1<<1)
+#define NETWORK_HAS_CCK        (1<<2)
+
+/* QoS structure */
+#define NETWORK_HAS_QOS_PARAMETERS      (1<<3)
+#define NETWORK_HAS_QOS_INFORMATION     (1<<4)
+#define NETWORK_HAS_QOS_MASK            (NETWORK_HAS_QOS_PARAMETERS | NETWORK_HAS_QOS_INFORMATION)
+
+#define QOS_QUEUE_NUM                   4
+#define QOS_OUI_LEN                     3
+#define QOS_OUI_TYPE                    2
+#define QOS_ELEMENT_ID                  221
+#define QOS_OUI_INFO_SUB_TYPE           0
+#define QOS_OUI_PARAM_SUB_TYPE          1
+#define QOS_VERSION_1                   1
+#define QOS_AIFSN_MIN_VALUE             2
+
+struct ieee80211_qos_information_element {
+        u8 elementID;
+        u8 length;
+        u8 qui[QOS_OUI_LEN];
+        u8 qui_type;
+        u8 qui_subtype;
+        u8 version;
+        u8 ac_info;
+} __attribute__ ((packed));
+
+struct ieee80211_qos_ac_parameter {
+        u8 aci_aifsn;
+        u8 ecw_min_max;
+        u16 tx_op_limit;
+} __attribute__ ((packed));
+
+struct ieee80211_qos_parameter_info {
+        struct ieee80211_qos_information_element info_element;
+        u8 reserved;
+        struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
+} __attribute__ ((packed));
+
+struct ieee80211_qos_parameters {
+        u16 cw_min[QOS_QUEUE_NUM];
+        u16 cw_max[QOS_QUEUE_NUM];
+        u8 aifs[QOS_QUEUE_NUM];
+        u8 flag[QOS_QUEUE_NUM];
+        u16 tx_op_limit[QOS_QUEUE_NUM];
+} __attribute__ ((packed));
+
+struct ieee80211_qos_data {
+        struct ieee80211_qos_parameters parameters;
+        int active;
+        int supported;
+        u8 param_count;
+        u8 old_param_count;
+};
+
+struct ieee80211_tim_parameters {
+        u8 tim_count;
+        u8 tim_period;
+} __attribute__ ((packed));
+
+/*******************************************************/
 
 struct ieee80211_network {
         /* These entries are used to identify a unique network */
@@ -653,6 +739,8 @@ struct ieee80211_network {
         u8 ssid[IW_ESSID_MAX_SIZE + 1];
         u8 ssid_len;
 
+        struct ieee80211_qos_data qos_data;
+
         /* These are network statistics */
         struct ieee80211_rx_stats stats;
         u16 capability;
@@ -672,6 +760,7 @@ struct ieee80211_network {
         size_t wpa_ie_len;
         u8 rsn_ie[MAX_WPA_IE_LEN];
         size_t rsn_ie_len;
+        struct ieee80211_tim_parameters tim;
         struct list_head list;
 };
 
@@ -769,10 +858,13 @@ struct ieee80211_device {
         void (*set_security) (struct net_device * dev,
                               struct ieee80211_security * sec);
         int (*hard_start_xmit) (struct ieee80211_txb * txb,
-                                struct net_device * dev);
+                                struct net_device * dev, int pri);
         int (*reset_port) (struct net_device * dev);
         int (*is_queue_full) (struct net_device * dev, int pri);
 
+        int (*handle_management) (struct net_device * dev,
+                                  struct ieee80211_network * network, u16 type);
+
         /* Typical STA methods */
         int (*handle_auth) (struct net_device * dev,
                             struct ieee80211_auth * auth);
@@ -854,11 +946,14 @@ extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
 extern inline int ieee80211_get_hdrlen(u16 fc)
 {
         int hdrlen = IEEE80211_3ADDR_LEN;
+        u16 stype = WLAN_FC_GET_STYPE(fc);
 
         switch (WLAN_FC_GET_TYPE(fc)) {
         case IEEE80211_FTYPE_DATA:
                 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
                         hdrlen = IEEE80211_4ADDR_LEN;
+                if (stype & IEEE80211_STYPE_QOS_DATA)
+                        hdrlen += 2;
                 break;
         case IEEE80211_FTYPE_CTL:
                 switch (WLAN_FC_GET_STYPE(fc)) {