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Miller" , devicetree@vger.kernel.org, Rob Herring , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH 15/23] wfx: add data_rx.c/data_rx.h Date: Mon, 12 Oct 2020 12:46:40 +0200 Message-Id: <20201012104648.985256-16-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201012104648.985256-1-Jerome.Pouiller@silabs.com> References: <20201012104648.985256-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [82.67.86.106] X-ClientProxiedBy: PR3P189CA0005.EURP189.PROD.OUTLOOK.COM (2603:10a6:102:52::10) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.home (82.67.86.106) by PR3P189CA0005.EURP189.PROD.OUTLOOK.COM (2603:10a6:102:52::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3455.21 via Frontend Transport; Mon, 12 Oct 2020 10:47:32 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 7757ba4a-4a89-4711-8710-08d86e9c39e6 X-MS-TrafficTypeDiagnostic: SA0PR11MB4734: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:644; 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+ + 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); +} diff --git a/drivers/net/wireless/silabs/wfx/data_rx.h b/drivers/net/wireless/silabs/wfx/data_rx.h new file mode 100644 index 000000000000..4c0da37f2084 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/data_rx.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Datapath implementation. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_DATA_RX_H +#define WFX_DATA_RX_H + +struct wfx_vif; +struct sk_buff; +struct hif_ind_rx; + +void wfx_rx_cb(struct wfx_vif *wvif, + const struct hif_ind_rx *arg, struct sk_buff *skb); + +#endif /* WFX_DATA_RX_H */