2015-12-05 09:52:02 +00:00
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From: "Janusz.Dziedzic@tieto.com" <Janusz.Dziedzic@tieto.com>
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Date: Thu, 10 Sep 2015 12:04:13 +0200
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Subject: ibss: add VHT80 support for IBSS
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Add VHT80 support for IBSS.
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eg. iw wlan0 ibss join 5180 80MHZ
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iw wlan0 ibbs join 5220 80MHZ
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Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
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[fix formatting]
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Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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---
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ibss.c | 49 +++++++++++++++++++++++++++++++++++++++++--------
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1 file changed, 41 insertions(+), 8 deletions(-)
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--- a/ibss.c
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+++ b/ibss.c
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@@ -16,6 +16,39 @@
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SECTION(ibss);
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+struct chanmode {
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+ const char *name;
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+ unsigned int width;
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+ int freq1_diff;
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+ int chantype; /* for older kernel */
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+};
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+
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+static int get_cf1(const struct chanmode *chanmode, unsigned long freq)
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+{
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+ int cf1 = freq, j;
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+ int vht80[] = { 5180, 5260, 5500, 5580, 5660, 5745 };
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+
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+ switch (chanmode->width) {
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+ case NL80211_CHAN_WIDTH_80:
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+ /* setup center_freq1 */
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+ for (j = 0; j < ARRAY_SIZE(vht80); j++) {
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+ if (freq >= vht80[j] && freq < vht80[j] + 80)
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+ break;
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+ }
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+
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+ if (j == ARRAY_SIZE(vht80))
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+ break;
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+
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+ cf1 = vht80[j] + 30;
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+ break;
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+ default:
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+ cf1 = freq + chanmode->freq1_diff;
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+ break;
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+ }
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+
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+ return cf1;
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+}
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+
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static int join_ibss(struct nl80211_state *state,
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struct nl_msg *msg,
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int argc, char **argv,
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2016-05-14 16:12:17 +00:00
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@@ -30,12 +63,8 @@ static int join_ibss(struct nl80211_stat
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2015-12-05 09:52:02 +00:00
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int bintval;
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int i;
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unsigned long freq;
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- static const struct {
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- const char *name;
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- unsigned int width;
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- int freq1_diff;
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- int chantype; /* for older kernel */
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- } *chanmode_selected = NULL, chanmode[] = {
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+ const struct chanmode *chanmode_selected = NULL;
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+ static const struct chanmode chanmode[] = {
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{ .name = "HT20",
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.width = NL80211_CHAN_WIDTH_20,
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.freq1_diff = 0,
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2016-05-14 16:12:17 +00:00
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@@ -60,6 +89,10 @@ static int join_ibss(struct nl80211_stat
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2015-12-05 09:52:02 +00:00
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.width = NL80211_CHAN_WIDTH_10,
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.freq1_diff = 0,
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.chantype = -1 },
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+ { .name = "80MHZ",
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+ .width = NL80211_CHAN_WIDTH_80,
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+ .freq1_diff = 0,
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+ .chantype = -1 },
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};
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if (argc < 2)
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2016-05-14 16:12:17 +00:00
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@@ -90,7 +123,7 @@ static int join_ibss(struct nl80211_stat
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2015-12-05 09:52:02 +00:00
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NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
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chanmode_selected->width);
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NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1,
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- freq + chanmode_selected->freq1_diff);
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+ get_cf1(chanmode_selected, freq));
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if (chanmode_selected->chantype != -1)
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NLA_PUT_U32(msg,
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NL80211_ATTR_WIPHY_CHANNEL_TYPE,
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@@ -192,7 +225,7 @@ COMMAND(ibss, leave, NULL,
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NL80211_CMD_LEAVE_IBSS, 0, CIB_NETDEV, leave_ibss,
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"Leave the current IBSS cell.");
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COMMAND(ibss, join,
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- "<SSID> <freq in MHz> [HT20|HT40+|HT40-|NOHT|5MHZ|10MHZ] [fixed-freq] [<fixed bssid>] [beacon-interval <TU>]"
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+ "<SSID> <freq in MHz> [HT20|HT40+|HT40-|NOHT|5MHZ|10MHZ|80MHZ] [fixed-freq] [<fixed bssid>] [beacon-interval <TU>]"
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" [basic-rates <rate in Mbps,rate2,...>] [mcast-rate <rate in Mbps>] "
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"[key d:0:abcde]",
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NL80211_CMD_JOIN_IBSS, 0, CIB_NETDEV, join_ibss,
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