diff options
Diffstat (limited to 'net/mac80211/util.c')
-rw-r--r-- | net/mac80211/util.c | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index ffb6e88f2ecd..949d857debd8 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c | |||
@@ -35,15 +35,6 @@ | |||
35 | /* privid for wiphys to determine whether they belong to us or not */ | 35 | /* privid for wiphys to determine whether they belong to us or not */ |
36 | void *mac80211_wiphy_privid = &mac80211_wiphy_privid; | 36 | void *mac80211_wiphy_privid = &mac80211_wiphy_privid; |
37 | 37 | ||
38 | /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ | ||
39 | /* Ethernet-II snap header (RFC1042 for most EtherTypes) */ | ||
40 | const unsigned char rfc1042_header[] __aligned(2) = | ||
41 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 }; | ||
42 | |||
43 | /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ | ||
44 | const unsigned char bridge_tunnel_header[] __aligned(2) = | ||
45 | { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 }; | ||
46 | |||
47 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) | 38 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy) |
48 | { | 39 | { |
49 | struct ieee80211_local *local; | 40 | struct ieee80211_local *local; |
@@ -103,70 +94,6 @@ u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len, | |||
103 | return NULL; | 94 | return NULL; |
104 | } | 95 | } |
105 | 96 | ||
106 | unsigned int ieee80211_hdrlen(__le16 fc) | ||
107 | { | ||
108 | unsigned int hdrlen = 24; | ||
109 | |||
110 | if (ieee80211_is_data(fc)) { | ||
111 | if (ieee80211_has_a4(fc)) | ||
112 | hdrlen = 30; | ||
113 | if (ieee80211_is_data_qos(fc)) | ||
114 | hdrlen += IEEE80211_QOS_CTL_LEN; | ||
115 | goto out; | ||
116 | } | ||
117 | |||
118 | if (ieee80211_is_ctl(fc)) { | ||
119 | /* | ||
120 | * ACK and CTS are 10 bytes, all others 16. To see how | ||
121 | * to get this condition consider | ||
122 | * subtype mask: 0b0000000011110000 (0x00F0) | ||
123 | * ACK subtype: 0b0000000011010000 (0x00D0) | ||
124 | * CTS subtype: 0b0000000011000000 (0x00C0) | ||
125 | * bits that matter: ^^^ (0x00E0) | ||
126 | * value of those: 0b0000000011000000 (0x00C0) | ||
127 | */ | ||
128 | if ((fc & cpu_to_le16(0x00E0)) == cpu_to_le16(0x00C0)) | ||
129 | hdrlen = 10; | ||
130 | else | ||
131 | hdrlen = 16; | ||
132 | } | ||
133 | out: | ||
134 | return hdrlen; | ||
135 | } | ||
136 | EXPORT_SYMBOL(ieee80211_hdrlen); | ||
137 | |||
138 | unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb) | ||
139 | { | ||
140 | const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *)skb->data; | ||
141 | unsigned int hdrlen; | ||
142 | |||
143 | if (unlikely(skb->len < 10)) | ||
144 | return 0; | ||
145 | hdrlen = ieee80211_hdrlen(hdr->frame_control); | ||
146 | if (unlikely(hdrlen > skb->len)) | ||
147 | return 0; | ||
148 | return hdrlen; | ||
149 | } | ||
150 | EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb); | ||
151 | |||
152 | int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr) | ||
153 | { | ||
154 | int ae = meshhdr->flags & IEEE80211S_FLAGS_AE; | ||
155 | /* 7.1.3.5a.2 */ | ||
156 | switch (ae) { | ||
157 | case 0: | ||
158 | return 6; | ||
159 | case 1: | ||
160 | return 12; | ||
161 | case 2: | ||
162 | return 18; | ||
163 | case 3: | ||
164 | return 24; | ||
165 | default: | ||
166 | return 6; | ||
167 | } | ||
168 | } | ||
169 | |||
170 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) | 97 | void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx) |
171 | { | 98 | { |
172 | struct sk_buff *skb = tx->skb; | 99 | struct sk_buff *skb = tx->skb; |