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| author | Johannes Berg <johannes@sipsolutions.net> | 2009-07-02 17:18:40 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-07-10 15:01:53 -0400 |
| commit | 517357c685ccc4b5783cc7dbdae8824ada19a97f (patch) | |
| tree | 1e3532ca39233dd59b106011788f68a21ffc88c4 /net/wireless/util.c | |
| parent | 0eb14647fc6b56f73efb28a72ca0c7cc03a653f9 (diff) | |
| download | linux-517357c685ccc4b5783cc7dbdae8824ada19a97f.tar.gz linux-517357c685ccc4b5783cc7dbdae8824ada19a97f.tar.bz2 linux-517357c685ccc4b5783cc7dbdae8824ada19a97f.zip | |
cfg80211: assimilate and export ieee80211_bss_get_ie
This function from mac80211 seems generally useful, and
I will need it in cfg80211 soon.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/util.c')
| -rw-r--r-- | net/wireless/util.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c index 25550692dda6..28f8f96801d4 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -502,3 +502,24 @@ unsigned int cfg80211_classify8021d(struct sk_buff *skb) return dscp >> 5; } EXPORT_SYMBOL(cfg80211_classify8021d); + +const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie) +{ + u8 *end, *pos; + + pos = bss->information_elements; + if (pos == NULL) + return NULL; + end = pos + bss->len_information_elements; + + while (pos + 1 < end) { + if (pos + 2 + pos[1] > end) + break; + if (pos[0] == ie) + return pos; + pos += 2 + pos[1]; + } + + return NULL; +} +EXPORT_SYMBOL(ieee80211_bss_get_ie); |