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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * Datapath implementation.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
- #include <linux/etherdevice.h>
- #include <net/mac80211.h>
- #include "data_rx.h"
- #include "wfx.h"
- #include "bh.h"
- #include "sta.h"
- static void wfx_rx_handle_ba(struct wfx_vif *wvif, struct ieee80211_mgmt *mgmt)
- {
- int params, tid;
- if (wfx_api_older_than(wvif->wdev, 3, 6))
- return;
- switch (mgmt->u.action.u.addba_req.action_code) {
- case WLAN_ACTION_ADDBA_REQ:
- params = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
- tid = (params & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
- ieee80211_start_rx_ba_session_offl(wvif->vif, mgmt->sa, tid);
- break;
- case WLAN_ACTION_DELBA:
- params = le16_to_cpu(mgmt->u.action.u.delba.params);
- tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12;
- ieee80211_stop_rx_ba_session_offl(wvif->vif, mgmt->sa, tid);
- break;
- }
- }
- void wfx_rx_cb(struct wfx_vif *wvif,
- const struct hif_ind_rx *arg, struct sk_buff *skb)
- {
- struct ieee80211_rx_status *hdr = IEEE80211_SKB_RXCB(skb);
- struct ieee80211_hdr *frame = (struct ieee80211_hdr *)skb->data;
- struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
- memset(hdr, 0, sizeof(*hdr));
- if (arg->status == HIF_STATUS_RX_FAIL_MIC)
- hdr->flag |= RX_FLAG_MMIC_ERROR | RX_FLAG_IV_STRIPPED;
- else if (arg->status)
- goto drop;
- if (skb->len < sizeof(struct ieee80211_pspoll)) {
- dev_warn(wvif->wdev->dev, "malformed SDU received\n");
- goto drop;
- }
- hdr->band = NL80211_BAND_2GHZ;
- hdr->freq = ieee80211_channel_to_frequency(arg->channel_number,
- hdr->band);
- if (arg->rxed_rate >= 14) {
- hdr->encoding = RX_ENC_HT;
- hdr->rate_idx = arg->rxed_rate - 14;
- } else if (arg->rxed_rate >= 4) {
- hdr->rate_idx = arg->rxed_rate - 2;
- } else {
- hdr->rate_idx = arg->rxed_rate;
- }
- if (!arg->rcpi_rssi) {
- hdr->flag |= RX_FLAG_NO_SIGNAL_VAL;
- dev_info(wvif->wdev->dev, "received frame without RSSI data\n");
- }
- hdr->signal = arg->rcpi_rssi / 2 - 110;
- hdr->antenna = 0;
- if (arg->encryp)
- hdr->flag |= RX_FLAG_DECRYPTED;
- // Block ack negotiation is offloaded by the firmware. However,
- // re-ordering must be done by the mac80211.
- if (ieee80211_is_action(frame->frame_control) &&
- mgmt->u.action.category == WLAN_CATEGORY_BACK &&
- skb->len > IEEE80211_MIN_ACTION_SIZE) {
- wfx_rx_handle_ba(wvif, mgmt);
- goto drop;
- }
- ieee80211_rx_irqsafe(wvif->wdev->hw, skb);
- return;
- drop:
- dev_kfree_skb(skb);
- }
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