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https://github.com/torvalds/linux
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85220d71bf
Add support for the secondary channel offset IE in channel switch announcements. This is necessary for proper handling of CSA on HT access points. For this to work it is also necessary to convert everything here to use chandef structs instead of just channels. The driver updates aren't really correct though. In particular, the TI wl18xx driver update can't possibly be right since it just ignores the new channel width for lack of firmware API. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*
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* This file is part of wl18xx
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*
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* Copyright (C) 2011 Texas Instruments Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include "../wlcore/cmd.h"
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#include "../wlcore/debug.h"
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#include "../wlcore/hw_ops.h"
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#include "cmd.h"
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int wl18xx_cmd_channel_switch(struct wl1271 *wl,
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struct wl12xx_vif *wlvif,
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struct ieee80211_channel_switch *ch_switch)
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{
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struct wl18xx_cmd_channel_switch *cmd;
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u32 supported_rates;
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int ret;
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wl1271_debug(DEBUG_ACX, "cmd channel switch");
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
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if (!cmd) {
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ret = -ENOMEM;
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goto out;
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}
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cmd->role_id = wlvif->role_id;
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cmd->channel = ch_switch->chandef.chan->hw_value;
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cmd->switch_time = ch_switch->count;
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cmd->stop_tx = ch_switch->block_tx;
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switch (ch_switch->chandef.chan->band) {
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case IEEE80211_BAND_2GHZ:
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cmd->band = WLCORE_BAND_2_4GHZ;
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break;
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case IEEE80211_BAND_5GHZ:
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cmd->band = WLCORE_BAND_5GHZ;
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break;
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default:
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wl1271_error("invalid channel switch band: %d",
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ch_switch->chandef.chan->band);
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ret = -EINVAL;
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goto out_free;
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}
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supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
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wlcore_hw_sta_get_ap_rate_mask(wl, wlvif);
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if (wlvif->p2p)
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supported_rates &= ~CONF_TX_CCK_RATES;
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cmd->local_supported_rates = cpu_to_le32(supported_rates);
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cmd->channel_type = wlvif->channel_type;
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ret = wl1271_cmd_send(wl, CMD_CHANNEL_SWITCH, cmd, sizeof(*cmd), 0);
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if (ret < 0) {
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wl1271_error("failed to send channel switch command");
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goto out_free;
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}
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out_free:
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kfree(cmd);
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out:
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return ret;
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}
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