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243874c64c
IPQ8074 HW has support to verify the PN of the received frames. For all frames except for fragmented ones, HW checks the PN and delivers them to the driver. For fragmented frames, driver is required to do a little more; it has to reassemble the fragments and then reinject them to the HW for verifying the PN. Currently, to keep the logic simple, PN verifcation is disabled in HW and is handled in mac80211 for all the frames (fragmented and unfragmented). On the contrary, offloading PN Validation to the HW brings important benefits. It reduces CPU cycles spent on the host CPU for verifying the same; helps in enabling features which improve performance like mac80211 fast RX path, enabling multiple REO rings for parallel RX processing, 802.11 decapsulation offloading. All these features are dependent on PN offload which in turn is dependent on handling of the received fragments in the driver. When TKIP security is used, additional handling is required while processing the fragments; since MIC is computed on an MSDU in TKIP, only the last fragment has the MIC info. In this case, driver has to compute the MIC after reassembly and compare it against the MIC present in the frame. For this, MICHAEL_MIC kernel crypto library APIs are used and the dependencies are appropriately set. Signed-off-by: Manikanta Pubbisetty <mpubbise@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
89 lines
3.3 KiB
C
89 lines
3.3 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause-Clear */
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/*
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* Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
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*/
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#ifndef ATH11K_DP_RX_H
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#define ATH11K_DP_RX_H
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#include "core.h"
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#include "rx_desc.h"
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#include "debug.h"
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#define DP_RX_MPDU_ERR_FCS BIT(0)
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#define DP_RX_MPDU_ERR_DECRYPT BIT(1)
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#define DP_RX_MPDU_ERR_TKIP_MIC BIT(2)
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#define DP_RX_MPDU_ERR_AMSDU_ERR BIT(3)
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#define DP_RX_MPDU_ERR_OVERFLOW BIT(4)
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#define DP_RX_MPDU_ERR_MSDU_LEN BIT(5)
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#define DP_RX_MPDU_ERR_MPDU_LEN BIT(6)
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#define DP_RX_MPDU_ERR_UNENCRYPTED_FRAME BIT(7)
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enum dp_rx_decap_type {
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DP_RX_DECAP_TYPE_RAW,
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DP_RX_DECAP_TYPE_NATIVE_WIFI,
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DP_RX_DECAP_TYPE_ETHERNET2_DIX,
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DP_RX_DECAP_TYPE_8023,
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};
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struct ath11k_dp_amsdu_subframe_hdr {
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u8 dst[ETH_ALEN];
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u8 src[ETH_ALEN];
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__be16 len;
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} __packed;
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struct ath11k_dp_rfc1042_hdr {
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u8 llc_dsap;
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u8 llc_ssap;
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u8 llc_ctrl;
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u8 snap_oui[3];
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__be16 snap_type;
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} __packed;
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int ath11k_dp_rx_ampdu_start(struct ath11k *ar,
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struct ieee80211_ampdu_params *params);
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int ath11k_dp_rx_ampdu_stop(struct ath11k *ar,
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struct ieee80211_ampdu_params *params);
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void ath11k_peer_rx_tid_cleanup(struct ath11k *ar, struct ath11k_peer *peer);
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void ath11k_peer_rx_tid_delete(struct ath11k *ar,
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struct ath11k_peer *peer, u8 tid);
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int ath11k_peer_rx_tid_setup(struct ath11k *ar, const u8 *peer_mac, int vdev_id,
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u8 tid, u32 ba_win_sz, u16 ssn);
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void ath11k_dp_htt_htc_t2h_msg_handler(struct ath11k_base *ab,
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struct sk_buff *skb);
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int ath11k_dp_pdev_reo_setup(struct ath11k_base *ab);
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void ath11k_dp_pdev_reo_cleanup(struct ath11k_base *ab);
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int ath11k_dp_rx_pdev_alloc(struct ath11k_base *ab, int pdev_idx);
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void ath11k_dp_rx_pdev_free(struct ath11k_base *ab, int pdev_idx);
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void ath11k_dp_reo_cmd_list_cleanup(struct ath11k_base *ab);
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void ath11k_dp_process_reo_status(struct ath11k_base *ab);
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int ath11k_dp_process_rxdma_err(struct ath11k_base *ab, int mac_id, int budget);
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int ath11k_dp_rx_process_wbm_err(struct ath11k_base *ab,
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struct napi_struct *napi, int budget);
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int ath11k_dp_process_rx_err(struct ath11k_base *ab, struct napi_struct *napi,
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int budget);
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int ath11k_dp_process_rx(struct ath11k_base *ab, int mac_id,
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struct napi_struct *napi, struct sk_buff_head *pending_q,
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int budget);
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int ath11k_dp_rxbufs_replenish(struct ath11k_base *ab, int mac_id,
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struct dp_rxdma_ring *rx_ring,
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int req_entries,
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enum hal_rx_buf_return_buf_manager mgr,
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gfp_t gfp);
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int ath11k_dp_htt_tlv_iter(struct ath11k_base *ab, const void *ptr, size_t len,
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int (*iter)(struct ath11k_base *ar, u16 tag, u16 len,
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const void *ptr, void *data),
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void *data);
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int ath11k_dp_rx_process_mon_rings(struct ath11k_base *ab, int mac_id,
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struct napi_struct *napi, int budget);
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int ath11k_dp_rx_process_mon_status(struct ath11k_base *ab, int mac_id,
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struct napi_struct *napi, int budget);
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int ath11k_dp_rx_mon_status_bufs_replenish(struct ath11k_base *ab, int mac_id,
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struct dp_rxdma_ring *rx_ring,
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int req_entries,
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enum hal_rx_buf_return_buf_manager mgr,
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gfp_t gfp);
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int ath11k_dp_rx_pdev_mon_detach(struct ath11k *ar);
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int ath11k_dp_rx_pdev_mon_attach(struct ath11k *ar);
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int ath11k_peer_rx_frag_setup(struct ath11k *ar, const u8 *peer_mac, int vdev_id);
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#endif /* ATH11K_DP_RX_H */
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