366c1e01e6
HW wrongly calculates MIC for the last fragment of TKIP encrypted packets due to which this packet ends up on WBM execption ring. Add code to handle the last fragment in WBM execption ring. Change-Id: I2dea5b3fbcb48036435e26f32f4641e7a0840bcd CRs-Fixed: 2214749
152 lines
4.4 KiB
C
152 lines
4.4 KiB
C
/*
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* Copyright (c) 2017-2018 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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void dp_rx_defrag_waitlist_flush(struct dp_soc *soc);
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void dp_rx_reorder_flush_frag(struct dp_peer *peer,
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unsigned int tid);
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void dp_rx_defrag_waitlist_remove(struct dp_peer *peer, unsigned tid);
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void dp_rx_defrag_cleanup(struct dp_peer *peer, unsigned tid);
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QDF_STATUS dp_rx_defrag_add_last_frag(struct dp_soc *soc,
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struct dp_peer *peer, uint16_t tid,
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uint16_t rxseq, qdf_nbuf_t nbuf);
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#endif /* _DP_RX_DEFRAG_H */
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