1 /* 2 * Copyright (c) 2017-2020 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for 5 * any purpose with or without fee is hereby granted, provided that the 6 * above copyright notice and this permission notice appear in all 7 * copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #ifndef _DP_RX_DEFRAG_H 20 #define _DP_RX_DEFRAG_H 21 22 #include "hal_rx.h" 23 24 #define DEFRAG_IEEE80211_KEY_LEN 8 25 #define DEFRAG_IEEE80211_FCS_LEN 4 26 27 #define DP_RX_DEFRAG_IEEE80211_ADDR_COPY(dst, src) \ 28 qdf_mem_copy(dst, src, QDF_MAC_ADDR_SIZE) 29 30 #define DP_RX_DEFRAG_IEEE80211_QOS_HAS_SEQ(wh) \ 31 (((wh) & \ 32 (IEEE80211_FC0_TYPE_MASK | QDF_IEEE80211_FC0_SUBTYPE_QOS)) == \ 33 (IEEE80211_FC0_TYPE_DATA | QDF_IEEE80211_FC0_SUBTYPE_QOS)) 34 35 #define UNI_DESC_OWNER_SW 0x1 36 #define UNI_DESC_BUF_TYPE_RX_MSDU_LINK 0x6 37 /** 38 * struct dp_rx_defrag_cipher: structure to indicate cipher header 39 * @ic_name: Name 40 * @ic_header: header length 41 * @ic_trailer: trail length 42 * @ic_miclen: MIC length 43 */ 44 struct dp_rx_defrag_cipher { 45 const char *ic_name; 46 uint16_t ic_header; 47 uint8_t ic_trailer; 48 uint8_t ic_miclen; 49 }; 50 51 uint32_t dp_rx_frag_handle(struct dp_soc *soc, hal_ring_desc_t ring_desc, 52 struct hal_rx_mpdu_desc_info *mpdu_desc_info, 53 struct dp_rx_desc *rx_desc, 54 uint8_t *mac_id, 55 uint32_t quota); 56 57 /* 58 * dp_rx_frag_get_mac_hdr() - Return pointer to the mac hdr 59 * @rx_desc_info: Pointer to the pkt_tlvs in the 60 * nbuf (pkt_tlvs->mac_hdr->data) 61 * 62 * It is inefficient to peek into the packet for received 63 * frames but these APIs are required to get to some of 64 * 802.11 fields that hardware does not populate in the 65 * rx meta data. 66 * 67 * Returns: pointer to ieee80211_frame 68 */ 69 static inline 70 struct ieee80211_frame *dp_rx_frag_get_mac_hdr(uint8_t *rx_desc_info) 71 { 72 int rx_desc_len = SIZE_OF_DATA_RX_TLV; 73 return (struct ieee80211_frame *)(rx_desc_info + rx_desc_len); 74 } 75 76 /* 77 * dp_rx_frag_get_mpdu_seq_number() - Get mpdu sequence number 78 * @rx_desc_info: Pointer to the pkt_tlvs in the 79 * nbuf (pkt_tlvs->mac_hdr->data) 80 * 81 * Returns: uint16_t, rx sequence number 82 */ 83 static inline 84 uint16_t dp_rx_frag_get_mpdu_seq_number(uint8_t *rx_desc_info) 85 { 86 struct ieee80211_frame *mac_hdr; 87 mac_hdr = dp_rx_frag_get_mac_hdr(rx_desc_info); 88 89 return qdf_le16_to_cpu(*(uint16_t *) mac_hdr->i_seq) >> 90 IEEE80211_SEQ_SEQ_SHIFT; 91 } 92 93 /* 94 * dp_rx_frag_get_mpdu_frag_number() - Get mpdu fragment number 95 * @rx_desc_info: Pointer to the pkt_tlvs in the 96 * nbuf (pkt_tlvs->mac_hdr->data) 97 * 98 * Returns: uint8_t, receive fragment number 99 */ 100 static inline 101 uint8_t dp_rx_frag_get_mpdu_frag_number(uint8_t *rx_desc_info) 102 { 103 struct ieee80211_frame *mac_hdr; 104 mac_hdr = dp_rx_frag_get_mac_hdr(rx_desc_info); 105 106 return qdf_le16_to_cpu(*(uint16_t *) mac_hdr->i_seq) & 107 IEEE80211_SEQ_FRAG_MASK; 108 } 109 110 /* 111 * dp_rx_frag_get_more_frag_bit() - Get more fragment bit 112 * @rx_desc_info: Pointer to the pkt_tlvs in the 113 * nbuf (pkt_tlvs->mac_hdr->data) 114 * 115 * Returns: uint8_t, get more fragment bit 116 */ 117 static inline 118 uint8_t dp_rx_frag_get_more_frag_bit(uint8_t *rx_desc_info) 119 { 120 struct ieee80211_frame *mac_hdr; 121 mac_hdr = dp_rx_frag_get_mac_hdr(rx_desc_info); 122 123 return (mac_hdr->i_fc[1] & IEEE80211_FC1_MORE_FRAG) >> 2; 124 } 125 126 static inline 127 uint8_t dp_rx_get_pkt_dir(uint8_t *rx_desc_info) 128 { 129 struct ieee80211_frame *mac_hdr; 130 mac_hdr = dp_rx_frag_get_mac_hdr(rx_desc_info); 131 132 return mac_hdr->i_fc[1] & IEEE80211_FC1_DIR_MASK; 133 } 134 135 void dp_rx_defrag_waitlist_flush(struct dp_soc *soc); 136 void dp_rx_reorder_flush_frag(struct dp_peer *peer, 137 unsigned int tid); 138 void dp_rx_defrag_waitlist_remove(struct dp_peer *peer, unsigned tid); 139 void dp_rx_defrag_cleanup(struct dp_peer *peer, unsigned tid); 140 141 QDF_STATUS dp_rx_defrag_add_last_frag(struct dp_soc *soc, 142 struct dp_peer *peer, uint16_t tid, 143 uint16_t rxseq, qdf_nbuf_t nbuf); 144 #endif /* _DP_RX_DEFRAG_H */ 145