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scan: Add option to use the NO_CCK scan flag

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P2P probe requests are to be sent at min 6.0 Mb/s using OFDM,
specifically the 802.11b rates are prohibited (section 2.4.1 in Wi-Fi
P2p Technical Spec v1.7), some of which use CCK modulation.  This is
already the default for 5G but for 2.4G the drivers generally do this
if we set the NL80211_ATTR_TX_NO_CCK_RATE flags with
NL80211_CMD_TRIGGER_SCAN.
This commit is contained in:
Andrew Zaborowski 2019-07-15 16:12:55 +02:00 committed by Denis Kenzior
parent 2a5c2cec46
commit cf684fdfa1
2 changed files with 5 additions and 0 deletions
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4
src/scan.c
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@ -314,6 +314,10 @@ static struct l_genl_msg *scan_build_cmd(struct scan_context *sc,
if (flags)
l_genl_msg_append_attr(msg, NL80211_ATTR_SCAN_FLAGS, 4, &flags);
if (params->no_cck_rates)
l_genl_msg_append_attr(msg, NL80211_ATTR_TX_NO_CCK_RATE, 0,
NULL);
return msg;
}

1
src/scan.h
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@ -80,6 +80,7 @@ struct scan_parameters {
struct scan_freq_set *freqs;
bool flush : 1;
bool randomize_mac_addr_hint : 1;
bool no_cck_rates : 1;
const char *ssid; /* Used for direct probe request */
};