diff options
| author | Harvey Harrison <harvey.harrison@gmail.com> | 2008-07-02 20:05:35 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-07-08 20:16:01 +0200 |
| commit | 8e8862b79d2ce9177bfddd85b8328a86a25c69b2 (patch) | |
| tree | 595f0a47cf20800ee895c9cd6e98817ac1ff71ba /net/mac80211/michael.c | |
| parent | mac80211: remove one user of ieee80211_get_hdr_info (diff) | |
| download | linux-8e8862b79d2ce9177bfddd85b8328a86a25c69b2.tar.xz linux-8e8862b79d2ce9177bfddd85b8328a86a25c69b2.zip | |
mac80211: remove ieee80211_get_hdr_info
Do the check for sufficient skb->len explicitly and pass a pointer
to the struct ieee80211_hdr directly to the michael_mic calculation.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/michael.c')
| -rw-r--r-- | net/mac80211/michael.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/net/mac80211/michael.c b/net/mac80211/michael.c index 1fcdf38cf60c..408649bd4702 100644 --- a/net/mac80211/michael.c +++ b/net/mac80211/michael.c @@ -8,6 +8,7 @@ */ #include <linux/types.h> #include <linux/bitops.h> +#include <linux/ieee80211.h> #include <asm/unaligned.h> #include "michael.h" @@ -26,9 +27,18 @@ static void michael_block(struct michael_mic_ctx *mctx, u32 val) mctx->l += mctx->r; } -static void michael_mic_hdr(struct michael_mic_ctx *mctx, - const u8 *key, const u8 *da, const u8 *sa, u8 priority) +static void michael_mic_hdr(struct michael_mic_ctx *mctx, const u8 *key, + struct ieee80211_hdr *hdr) { + u8 *da, *sa, tid; + + da = ieee80211_get_DA(hdr); + sa = ieee80211_get_SA(hdr); + if (ieee80211_is_data_qos(hdr->frame_control)) + tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK; + else + tid = 0; + mctx->l = get_unaligned_le32(key); mctx->r = get_unaligned_le32(key + 4); @@ -40,17 +50,17 @@ static void michael_mic_hdr(struct michael_mic_ctx *mctx, michael_block(mctx, get_unaligned_le16(&da[4]) | (get_unaligned_le16(sa) << 16)); michael_block(mctx, get_unaligned_le32(&sa[2])); - michael_block(mctx, priority); + michael_block(mctx, tid); } -void michael_mic(const u8 *key, const u8 *da, const u8 *sa, u8 priority, +void michael_mic(const u8 *key, struct ieee80211_hdr *hdr, const u8 *data, size_t data_len, u8 *mic) { u32 val; size_t block, blocks, left; struct michael_mic_ctx mctx; - michael_mic_hdr(&mctx, key, da, sa, priority); + michael_mic_hdr(&mctx, key, hdr); /* Real data */ blocks = data_len / 4; |