1 /* 2 * Copyright (c) 2017-2021 The Linux Foundation. All rights reserved. 3 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for 6 * any purpose with or without fee is hereby granted, provided that the 7 * above copyright notice and this permission notice appear in all 8 * copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 11 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 12 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 13 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 14 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 15 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 16 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 17 * PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #ifndef _DP_RX_DEFRAG_H 21 #define _DP_RX_DEFRAG_H 22 23 #include "hal_rx.h" 24 25 #define DEFRAG_IEEE80211_KEY_LEN 8 26 #define DEFRAG_IEEE80211_FCS_LEN 4 27 28 #define DP_RX_DEFRAG_IEEE80211_ADDR_COPY(dst, src) \ 29 qdf_mem_copy(dst, src, QDF_MAC_ADDR_SIZE) 30 31 #define DP_RX_DEFRAG_IEEE80211_QOS_HAS_SEQ(wh) \ 32 (((wh) & \ 33 (IEEE80211_FC0_TYPE_MASK | QDF_IEEE80211_FC0_SUBTYPE_QOS)) == \ 34 (IEEE80211_FC0_TYPE_DATA | QDF_IEEE80211_FC0_SUBTYPE_QOS)) 35 36 #define UNI_DESC_OWNER_SW 0x1 37 #define UNI_DESC_BUF_TYPE_RX_MSDU_LINK 0x6 38 /** 39 * struct dp_rx_defrag_cipher: structure to indicate cipher header 40 * @ic_name: Name 41 * @ic_header: header length 42 * @ic_trailer: trail length 43 * @ic_miclen: MIC length 44 */ 45 struct dp_rx_defrag_cipher { 46 const char *ic_name; 47 uint16_t ic_header; 48 uint8_t ic_trailer; 49 uint8_t ic_miclen; 50 }; 51 52 uint32_t dp_rx_frag_handle(struct dp_soc *soc, hal_ring_desc_t ring_desc, 53 struct hal_rx_mpdu_desc_info *mpdu_desc_info, 54 struct dp_rx_desc *rx_desc, 55 uint8_t *mac_id, 56 uint32_t quota); 57 58 /* 59 * dp_rx_frag_get_mac_hdr() - Return pointer to the mac hdr 60 * @rx_desc_info: Pointer to the pkt_tlvs in the 61 * nbuf (pkt_tlvs->mac_hdr->data) 62 * 63 * It is inefficient to peek into the packet for received 64 * frames but these APIs are required to get to some of 65 * 802.11 fields that hardware does not populate in the 66 * rx meta data. 67 * 68 * Returns: pointer to ieee80211_frame 69 */ 70 static inline struct ieee80211_frame * 71 dp_rx_frag_get_mac_hdr(struct dp_soc *soc, uint8_t *rx_desc_info) 72 { 73 int rx_desc_len = soc->rx_pkt_tlv_size; 74 return (struct ieee80211_frame *)(rx_desc_info + rx_desc_len); 75 } 76 77 /* 78 * dp_rx_frag_get_mpdu_seq_number() - Get mpdu sequence number 79 * @rx_desc_info: Pointer to the pkt_tlvs in the 80 * nbuf (pkt_tlvs->mac_hdr->data) 81 * 82 * Returns: uint16_t, rx sequence number 83 */ 84 static inline uint16_t 85 dp_rx_frag_get_mpdu_seq_number(struct dp_soc *soc, int8_t *rx_desc_info) 86 { 87 struct ieee80211_frame *mac_hdr; 88 mac_hdr = dp_rx_frag_get_mac_hdr(soc, rx_desc_info); 89 90 return qdf_le16_to_cpu(*(uint16_t *) mac_hdr->i_seq) >> 91 IEEE80211_SEQ_SEQ_SHIFT; 92 } 93 94 /* 95 * dp_rx_frag_get_mpdu_frag_number() - Get mpdu fragment number 96 * @rx_desc_info: Pointer to the pkt_tlvs in the 97 * nbuf (pkt_tlvs->mac_hdr->data) 98 * 99 * Returns: uint8_t, receive fragment number 100 */ 101 static inline uint8_t 102 dp_rx_frag_get_mpdu_frag_number(struct dp_soc *soc, uint8_t *rx_desc_info) 103 { 104 struct ieee80211_frame *mac_hdr; 105 mac_hdr = dp_rx_frag_get_mac_hdr(soc, rx_desc_info); 106 107 return qdf_le16_to_cpu(*(uint16_t *) mac_hdr->i_seq) & 108 IEEE80211_SEQ_FRAG_MASK; 109 } 110 111 /* 112 * dp_rx_frag_get_more_frag_bit() - Get more fragment bit 113 * @rx_desc_info: Pointer to the pkt_tlvs in the 114 * nbuf (pkt_tlvs->mac_hdr->data) 115 * 116 * Returns: uint8_t, get more fragment bit 117 */ 118 static inline 119 uint8_t dp_rx_frag_get_more_frag_bit(struct dp_soc *soc, uint8_t *rx_desc_info) 120 { 121 struct ieee80211_frame *mac_hdr; 122 mac_hdr = dp_rx_frag_get_mac_hdr(soc, rx_desc_info); 123 124 return (mac_hdr->i_fc[1] & IEEE80211_FC1_MORE_FRAG) >> 2; 125 } 126 127 static inline 128 uint8_t dp_rx_get_pkt_dir(struct dp_soc *soc, uint8_t *rx_desc_info) 129 { 130 struct ieee80211_frame *mac_hdr; 131 mac_hdr = dp_rx_frag_get_mac_hdr(soc, rx_desc_info); 132 133 return mac_hdr->i_fc[1] & IEEE80211_FC1_DIR_MASK; 134 } 135 136 void dp_rx_defrag_waitlist_flush(struct dp_soc *soc); 137 void dp_rx_reorder_flush_frag(struct dp_txrx_peer *txrx_peer, 138 unsigned int tid); 139 void dp_rx_defrag_waitlist_remove(struct dp_txrx_peer *peer, unsigned int tid); 140 void dp_rx_defrag_cleanup(struct dp_txrx_peer *peer, unsigned int tid); 141 142 QDF_STATUS dp_rx_defrag_add_last_frag(struct dp_soc *soc, 143 struct dp_txrx_peer *peer, uint16_t tid, 144 uint16_t rxseq, qdf_nbuf_t nbuf); 145 #endif /* _DP_RX_DEFRAG_H */ 146