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cfg80211: move IE split utilities here from mac80211

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As the next patch will require the IE splitting utility functions
in cfg80211, move them there from mac80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2015-03-31 15:36:22 +02:00
parent ba8c3d6f16
commit 29464ccc78
5 changed files with 99 additions and 72 deletions
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41
net/wireless/util.c
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@ -1290,6 +1290,47 @@ int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
}
EXPORT_SYMBOL(cfg80211_get_p2p_attr);
static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id)
{
int i;
for (i = 0; i < n_ids; i++)
if (ids[i] == id)
return true;
return false;
}
size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen,
const u8 *ids, int n_ids,
const u8 *after_ric, int n_after_ric,
size_t offset)
{
size_t pos = offset;
while (pos < ielen && ieee80211_id_in_list(ids, n_ids, ies[pos])) {
if (ies[pos] == WLAN_EID_RIC_DATA && n_after_ric) {
pos += 2 + ies[pos + 1];
while (pos < ielen &&
!ieee80211_id_in_list(after_ric, n_after_ric,
ies[pos]))
pos += 2 + ies[pos + 1];
} else {
pos += 2 + ies[pos + 1];
}
}
return pos;
}
EXPORT_SYMBOL(ieee80211_ie_split_ric);
size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
const u8 *ids, int n_ids, size_t offset)
{
return ieee80211_ie_split_ric(ies, ielen, ids, n_ids, NULL, 0, offset);
}
EXPORT_SYMBOL(ieee80211_ie_split);
bool ieee80211_operating_class_to_band(u8 operating_class,
enum ieee80211_band *band)
{