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P2P: Do not reply to 802.11b-only Probe Request frames as GO

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If AP mode SME/MLME within wpa_supplicant is used for processing Probe
Request frames in GO mode, drop Probe Request frames that include only
802.11b rates per P2P spec section 2.4.1.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2013-06-19 19:16:23 +03:00 • committed by Jouni Malinen
parent ec7b97ab00
commit 85b4eac364
4 changed files with 46 additions and 33 deletions
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33
src/common/ieee802_11_common.c
View file

@ -512,3 +512,36 @@ enum hostapd_hw_mode ieee80211_freq_to_chan(int freq, u8 *channel)
return mode;
}
static int is_11b(u8 rate)
{
return rate == 0x02 || rate == 0x04 || rate == 0x0b || rate == 0x16;
}
int supp_rates_11b_only(struct ieee802_11_elems *elems)
{
int num_11b = 0, num_others = 0;
int i;
if (elems->supp_rates == NULL && elems->ext_supp_rates == NULL)
return 0;
for (i = 0; elems->supp_rates && i < elems->supp_rates_len; i++) {
if (is_11b(elems->supp_rates[i]))
num_11b++;
else
num_others++;
}
for (i = 0; elems->ext_supp_rates && i < elems->ext_supp_rates_len;
i++) {
if (is_11b(elems->ext_supp_rates[i]))
num_11b++;
else
num_others++;
}
return num_11b > 0 && num_others == 0;
}

2
src/common/ieee802_11_common.h
View file

@ -101,4 +101,6 @@ int hostapd_config_wmm_ac(struct hostapd_wmm_ac_params wmm_ac_params[],
const char *name, const char *val);
enum hostapd_hw_mode ieee80211_freq_to_chan(int freq, u8 *channel);
int supp_rates_11b_only(struct ieee802_11_elems *elems);
#endif /* IEEE802_11_COMMON_H */