75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
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/*
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* Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include "wcn36xx.h"
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#define WCN36XX_BMPS_FAIL_THREHOLD 3
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int wcn36xx_pmc_enter_bmps_state(struct wcn36xx *wcn,
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struct ieee80211_vif *vif)
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{
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int ret = 0;
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struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
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/* TODO: Make sure the TX chain clean */
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ret = wcn36xx_smd_enter_bmps(wcn, vif);
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if (!ret) {
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wcn36xx_dbg(WCN36XX_DBG_PMC, "Entered BMPS\n");
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vif_priv->pw_state = WCN36XX_BMPS;
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vif_priv->bmps_fail_ct = 0;
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vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;
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} else {
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/*
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* One of the reasons why HW will not enter BMPS is because
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* driver is trying to enter bmps before first beacon was
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* received just after auth complete
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*/
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wcn36xx_err("Can not enter BMPS!\n");
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if (vif_priv->bmps_fail_ct++ == WCN36XX_BMPS_FAIL_THREHOLD) {
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ieee80211_connection_loss(vif);
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vif_priv->bmps_fail_ct = 0;
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}
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}
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return ret;
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}
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int wcn36xx_pmc_exit_bmps_state(struct wcn36xx *wcn,
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struct ieee80211_vif *vif)
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{
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struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
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if (WCN36XX_BMPS != vif_priv->pw_state) {
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/* Unbalanced call or last BMPS enter failed */
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wcn36xx_dbg(WCN36XX_DBG_PMC,
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"Not in BMPS mode, no need to exit\n");
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return -EALREADY;
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}
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wcn36xx_smd_exit_bmps(wcn, vif);
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vif_priv->pw_state = WCN36XX_FULL_POWER;
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vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER;
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return 0;
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}
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int wcn36xx_enable_keep_alive_null_packet(struct wcn36xx *wcn,
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struct ieee80211_vif *vif)
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{
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wcn36xx_dbg(WCN36XX_DBG_PMC, "%s\n", __func__);
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return wcn36xx_smd_keep_alive_req(wcn, vif,
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WCN36XX_HAL_KEEP_ALIVE_NULL_PKT);
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}
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