223883fb88
- Perform SW chaining of fragments. - Reinject only the head fragment to REO. Change-Id: I198db3ba4319b8a2e800eb7495cf190c5e86d4cd CRs-Fixed: 2144197
143 行
4.0 KiB
C
143 行
4.0 KiB
C
/*
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* Copyright (c) 2017 The Linux Foundation. All rights reserved.
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*
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* Permission to use, copy, modify, and/or distribute this software for
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* any purpose with or without fee is hereby granted, provided that the
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* above copyright notice and this permission notice appear in all
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* copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _DP_RX_DEFRAG_H
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#define _DP_RX_DEFRAG_H
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#include "hal_rx.h"
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#ifdef CONFIG_MCL
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#include <cds_ieee80211_common.h>
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#else
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#include <linux/ieee80211.h>
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#endif
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#define DEFRAG_IEEE80211_ADDR_LEN 6
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#define DEFRAG_IEEE80211_KEY_LEN 8
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#define DEFRAG_IEEE80211_FCS_LEN 4
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#define DP_RX_DEFRAG_IEEE80211_ADDR_COPY(dst, src) \
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qdf_mem_copy(dst, src, IEEE80211_ADDR_LEN)
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#define DP_RX_DEFRAG_IEEE80211_QOS_HAS_SEQ(wh) \
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(((wh) & \
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(IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) == \
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(IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS))
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#define UNI_DESC_OWNER_SW 0x1
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#define UNI_DESC_BUF_TYPE_RX_MSDU_LINK 0x6
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/**
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* struct dp_rx_defrag_cipher: structure to indicate cipher header
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* @ic_name: Name
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* @ic_header: header length
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* @ic_trailer: trail length
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* @ic_miclen: MIC length
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*/
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struct dp_rx_defrag_cipher {
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const char *ic_name;
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uint16_t ic_header;
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uint8_t ic_trailer;
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uint8_t ic_miclen;
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};
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uint32_t dp_rx_frag_handle(struct dp_soc *soc, void *ring_desc,
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struct hal_rx_mpdu_desc_info *mpdu_desc_info,
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union dp_rx_desc_list_elem_t **head,
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union dp_rx_desc_list_elem_t **tail,
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uint32_t quota);
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/*
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* dp_rx_frag_get_mac_hdr() - Return pointer to the mac hdr
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* @rx_desc_info: Pointer to the pkt_tlvs in the
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* nbuf (pkt_tlvs->mac_hdr->data)
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*
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* It is inefficient to peek into the packet for received
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* frames but these APIs are required to get to some of
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* 802.11 fields that hardware does not populate in the
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* rx meta data.
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*
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* Returns: pointer to ieee80211_frame
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*/
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static inline
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struct ieee80211_frame *dp_rx_frag_get_mac_hdr(uint8_t *rx_desc_info)
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{
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int rx_desc_len = hal_rx_get_desc_len();
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return (struct ieee80211_frame *)(rx_desc_info + rx_desc_len);
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}
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/*
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* dp_rx_frag_get_mpdu_seq_number() - Get mpdu sequence number
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* @rx_desc_info: Pointer to the pkt_tlvs in the
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* nbuf (pkt_tlvs->mac_hdr->data)
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*
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* Returns: uint16_t, rx sequence number
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*/
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static inline
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uint16_t dp_rx_frag_get_mpdu_seq_number(uint8_t *rx_desc_info)
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{
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struct ieee80211_frame *mac_hdr;
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mac_hdr = dp_rx_frag_get_mac_hdr(rx_desc_info);
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return qdf_le16_to_cpu(*(uint16_t *) mac_hdr->i_seq) >>
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IEEE80211_SEQ_SEQ_SHIFT;
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}
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/*
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* dp_rx_frag_get_mpdu_frag_number() - Get mpdu fragment number
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* @rx_desc_info: Pointer to the pkt_tlvs in the
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* nbuf (pkt_tlvs->mac_hdr->data)
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*
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* Returns: uint8_t, receive fragment number
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*/
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static inline
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uint8_t dp_rx_frag_get_mpdu_frag_number(uint8_t *rx_desc_info)
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{
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struct ieee80211_frame *mac_hdr;
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mac_hdr = dp_rx_frag_get_mac_hdr(rx_desc_info);
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return qdf_le16_to_cpu(*(uint16_t *) mac_hdr->i_seq) &
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IEEE80211_SEQ_FRAG_MASK;
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}
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/*
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* dp_rx_frag_get_more_frag_bit() - Get more fragment bit
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* @rx_desc_info: Pointer to the pkt_tlvs in the
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* nbuf (pkt_tlvs->mac_hdr->data)
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*
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* Returns: uint8_t, get more fragment bit
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*/
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static inline
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uint8_t dp_rx_frag_get_more_frag_bit(uint8_t *rx_desc_info)
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{
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struct ieee80211_frame *mac_hdr;
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mac_hdr = dp_rx_frag_get_mac_hdr(rx_desc_info);
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return (mac_hdr->i_fc[1] & IEEE80211_FC1_MORE_FRAG) >> 2;
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}
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static inline
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uint8_t dp_rx_get_pkt_dir(uint8_t *rx_desc_info)
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{
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struct ieee80211_frame *mac_hdr;
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mac_hdr = dp_rx_frag_get_mac_hdr(rx_desc_info);
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return mac_hdr->i_fc[1] & IEEE80211_FC1_DIR_MASK;
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}
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#endif /* _DP_RX_DEFRAG_H */
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