Siddarth Poddar | b2011f6 | 2016-04-27 20:45:42 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2012-2016 The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| 5 | * |
| 6 | * |
| 7 | * Permission to use, copy, modify, and/or distribute this software for |
| 8 | * any purpose with or without fee is hereby granted, provided that the |
| 9 | * above copyright notice and this permission notice appear in all |
| 10 | * copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 13 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 14 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 15 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 16 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 17 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 18 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 19 | * PERFORMANCE OF THIS SOFTWARE. |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * This file was originally distributed by Qualcomm Atheros, Inc. |
| 24 | * under proprietary terms before Copyright ownership was assigned |
| 25 | * to the Linux Foundation. |
| 26 | */ |
| 27 | |
| 28 | #include <qdf_nbuf.h> /* qdf_nbuf_t, etc. */ |
| 29 | #include <htt.h> /* HTT_TX_EXT_TID_MGMT */ |
| 30 | #include <ol_htt_tx_api.h> /* htt_tx_desc_tid */ |
| 31 | #include <ol_txrx_api.h> /* ol_txrx_vdev_handle */ |
| 32 | #include <ol_txrx_ctrl_api.h> /* ol_txrx_sync */ |
| 33 | #include <ol_txrx.h> |
| 34 | #include <ol_txrx_internal.h> /* TXRX_ASSERT1 */ |
| 35 | #include <ol_txrx_types.h> /* pdev stats */ |
| 36 | #include <ol_tx_desc.h> /* ol_tx_desc */ |
| 37 | #include <ol_tx_send.h> /* ol_tx_send */ |
| 38 | #include <ol_txrx_peer_find.h> |
| 39 | #include <ol_tx_classify.h> |
| 40 | #include <ol_tx_queue.h> |
| 41 | #include <ipv4.h> |
| 42 | #include <ipv6_defs.h> |
| 43 | #include <ip_prot.h> |
| 44 | #include <enet.h> /* ETHERTYPE_VLAN, etc. */ |
| 45 | #include <cds_ieee80211_common.h> /* ieee80211_frame */ |
| 46 | |
| 47 | /* |
| 48 | * In theory, this tx classify code could be used on the host or in the target. |
| 49 | * Thus, this code uses generic OS primitives, that can be aliased to either |
| 50 | * the host's OS primitives or the target's OS primitives. |
| 51 | * For now, the following #defines set up these host-specific or |
| 52 | * target-specific aliases. |
| 53 | */ |
| 54 | |
| 55 | #if defined(CONFIG_HL_SUPPORT) |
| 56 | |
| 57 | #define OL_TX_CLASSIFY_EXTENSION(vdev, tx_desc, netbuf, msdu_info, txq) |
| 58 | #define OL_TX_CLASSIFY_MGMT_EXTENSION(vdev, tx_desc, netbuf, msdu_info, txq) |
| 59 | |
| 60 | #ifdef QCA_TX_HTT2_SUPPORT |
| 61 | static void |
| 62 | ol_tx_classify_htt2_frm( |
| 63 | struct ol_txrx_vdev_t *vdev, |
| 64 | qdf_nbuf_t tx_nbuf, |
| 65 | struct ol_txrx_msdu_info_t *tx_msdu_info) |
| 66 | { |
| 67 | struct htt_msdu_info_t *htt = &tx_msdu_info->htt; |
| 68 | A_UINT8 candi_frm = 0; |
| 69 | |
| 70 | /* |
| 71 | * Offload the frame re-order to L3 protocol and ONLY support |
| 72 | * TCP protocol now. |
| 73 | */ |
| 74 | if ((htt->info.l2_hdr_type == htt_pkt_type_ethernet) && |
| 75 | (htt->info.frame_type == htt_frm_type_data) && |
| 76 | htt->info.is_unicast && |
| 77 | (htt->info.ethertype == ETHERTYPE_IPV4)) { |
| 78 | struct ipv4_hdr_t *ipHdr; |
| 79 | |
| 80 | ipHdr = (struct ipv4_hdr_t *)(qdf_nbuf_data(tx_nbuf) + |
| 81 | htt->info.l3_hdr_offset); |
| 82 | if (ipHdr->protocol == IP_PROTOCOL_TCP) |
| 83 | candi_frm = 1; |
| 84 | } |
| 85 | |
| 86 | qdf_nbuf_set_tx_parallel_dnload_frm(tx_nbuf, candi_frm); |
| 87 | } |
| 88 | |
| 89 | #define OL_TX_CLASSIFY_HTT2_EXTENSION(vdev, netbuf, msdu_info) \ |
| 90 | ol_tx_classify_htt2_frm(vdev, netbuf, msdu_info); |
| 91 | #else |
| 92 | #define OL_TX_CLASSIFY_HTT2_EXTENSION(vdev, netbuf, msdu_info) /* no-op */ |
| 93 | #endif /* QCA_TX_HTT2_SUPPORT */ |
| 94 | /* DHCP go with voice priority; WMM_AC_VO_TID1();*/ |
| 95 | #define TX_DHCP_TID 6 |
| 96 | |
| 97 | #if defined(QCA_BAD_PEER_TX_FLOW_CL) |
| 98 | static inline A_BOOL |
| 99 | ol_if_tx_bad_peer_txq_overflow( |
| 100 | struct ol_txrx_pdev_t *pdev, |
| 101 | struct ol_txrx_peer_t *peer, |
| 102 | struct ol_tx_frms_queue_t *txq) |
| 103 | { |
| 104 | if (peer && pdev && txq && (peer->tx_limit_flag) && |
| 105 | (txq->frms >= pdev->tx_peer_bal.peer_bal_txq_limit)) |
| 106 | return true; |
| 107 | else |
| 108 | return false; |
| 109 | } |
| 110 | #else |
| 111 | static inline A_BOOL ol_if_tx_bad_peer_txq_overflow( |
| 112 | struct ol_txrx_pdev_t *pdev, |
| 113 | struct ol_txrx_peer_t *peer, |
| 114 | struct ol_tx_frms_queue_t *txq) |
| 115 | { |
| 116 | return false; |
| 117 | } |
| 118 | #endif |
| 119 | |
| 120 | /* EAPOL go with voice priority: WMM_AC_TO_TID1(WMM_AC_VO);*/ |
| 121 | #define TX_EAPOL_TID 6 |
| 122 | |
| 123 | /* ARP go with voice priority: WMM_AC_TO_TID1(pdev->arp_ac_override)*/ |
| 124 | #define TX_ARP_TID 6 |
| 125 | |
| 126 | /* For non-IP case, use default TID */ |
| 127 | #define TX_DEFAULT_TID 0 |
| 128 | |
| 129 | /* |
| 130 | * Determine IP TOS priority |
| 131 | * IP Tos format : |
| 132 | * (Refer Pg 57 WMM-test-plan-v1.2) |
| 133 | * IP-TOS - 8bits |
| 134 | * : DSCP(6-bits) ECN(2-bits) |
| 135 | * : DSCP - P2 P1 P0 X X X |
| 136 | * where (P2 P1 P0) form 802.1D |
| 137 | */ |
| 138 | static inline A_UINT8 |
| 139 | ol_tx_tid_by_ipv4(A_UINT8 *pkt) |
| 140 | { |
| 141 | A_UINT8 ipPri, tid; |
| 142 | struct ipv4_hdr_t *ipHdr = (struct ipv4_hdr_t *)pkt; |
| 143 | |
| 144 | ipPri = ipHdr->tos >> 5; |
| 145 | tid = ipPri & 0x7; |
| 146 | |
| 147 | return tid; |
| 148 | } |
| 149 | |
| 150 | static inline A_UINT8 |
| 151 | ol_tx_tid_by_ipv6(A_UINT8 *pkt) |
| 152 | { |
| 153 | return (ipv6_traffic_class((struct ipv6_hdr_t *)pkt) >> 5) & 0x7; |
| 154 | } |
| 155 | |
| 156 | static inline void |
| 157 | ol_tx_set_ether_type( |
| 158 | A_UINT8 *datap, |
| 159 | struct ol_txrx_msdu_info_t *tx_msdu_info) |
| 160 | { |
| 161 | A_UINT16 typeorlength; |
| 162 | A_UINT8 *ptr; |
| 163 | A_UINT8 *l3_data_ptr; |
| 164 | |
| 165 | if (tx_msdu_info->htt.info.l2_hdr_type == htt_pkt_type_raw) { |
| 166 | /* adjust hdr_ptr to RA */ |
| 167 | struct ieee80211_frame *wh = (struct ieee80211_frame *)datap; |
| 168 | |
| 169 | if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == |
| 170 | IEEE80211_FC0_TYPE_DATA) { |
| 171 | struct llc_snap_hdr_t *llc; |
| 172 | /* dot11 encapsulated frame */ |
| 173 | struct ieee80211_qosframe *whqos = |
| 174 | (struct ieee80211_qosframe *)datap; |
| 175 | if (whqos->i_fc[0] & IEEE80211_FC0_SUBTYPE_QOS) { |
| 176 | tx_msdu_info->htt.info.l3_hdr_offset = |
| 177 | sizeof(struct ieee80211_qosframe); |
| 178 | } else { |
| 179 | tx_msdu_info->htt.info.l3_hdr_offset = |
| 180 | sizeof(struct ieee80211_frame); |
| 181 | } |
| 182 | llc = (struct llc_snap_hdr_t *) |
| 183 | (datap + tx_msdu_info->htt.info.l3_hdr_offset); |
| 184 | tx_msdu_info->htt.info.ethertype = |
| 185 | (llc->ethertype[0] << 8) | llc->ethertype[1]; |
| 186 | /* |
| 187 | * l3_hdr_offset refers to the end of the 802.3 or |
| 188 | * 802.11 header, which may be a LLC/SNAP header rather |
| 189 | * than the IP header. |
| 190 | * Thus, don't increment l3_hdr_offset += sizeof(*llc); |
| 191 | * rather,leave it as is. |
| 192 | */ |
| 193 | } else { |
| 194 | /* |
| 195 | * This function should only be applied to data frames. |
| 196 | * For management frames, we already know to use |
| 197 | * HTT_TX_EXT_TID_MGMT. |
| 198 | */ |
| 199 | TXRX_ASSERT2(0); |
| 200 | } |
| 201 | } else if (tx_msdu_info->htt.info.l2_hdr_type == |
| 202 | htt_pkt_type_ethernet) { |
| 203 | ptr = (datap + ETHERNET_ADDR_LEN * 2); |
| 204 | typeorlength = (ptr[0] << 8) | ptr[1]; |
| 205 | /*ETHERNET_HDR_LEN;*/ |
| 206 | l3_data_ptr = datap + sizeof(struct ethernet_hdr_t); |
| 207 | |
| 208 | if (typeorlength == ETHERTYPE_VLAN) { |
| 209 | ptr = (datap + ETHERNET_ADDR_LEN * 2 |
| 210 | + ETHERTYPE_VLAN_LEN); |
| 211 | typeorlength = (ptr[0] << 8) | ptr[1]; |
| 212 | l3_data_ptr += ETHERTYPE_VLAN_LEN; |
| 213 | } |
| 214 | |
| 215 | if (!IS_ETHERTYPE(typeorlength)) { |
| 216 | /* 802.3 header*/ |
| 217 | struct llc_snap_hdr_t *llc_hdr = |
| 218 | (struct llc_snap_hdr_t *)l3_data_ptr; |
| 219 | typeorlength = (llc_hdr->ethertype[0] << 8) | |
| 220 | llc_hdr->ethertype[1]; |
| 221 | l3_data_ptr += sizeof(struct llc_snap_hdr_t); |
| 222 | } |
| 223 | |
| 224 | tx_msdu_info->htt.info.l3_hdr_offset = (A_UINT8)(l3_data_ptr - |
| 225 | datap); |
| 226 | tx_msdu_info->htt.info.ethertype = typeorlength; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | static inline A_UINT8 |
| 231 | ol_tx_tid_by_ether_type( |
| 232 | A_UINT8 *datap, |
| 233 | struct ol_txrx_msdu_info_t *tx_msdu_info) |
| 234 | { |
| 235 | A_UINT8 tid; |
| 236 | A_UINT8 *l3_data_ptr; |
| 237 | A_UINT16 typeorlength; |
| 238 | |
| 239 | l3_data_ptr = datap + tx_msdu_info->htt.info.l3_hdr_offset; |
| 240 | typeorlength = tx_msdu_info->htt.info.ethertype; |
| 241 | |
| 242 | /* IP packet, do packet inspection for TID */ |
| 243 | if (typeorlength == ETHERTYPE_IPV4) { |
| 244 | tid = ol_tx_tid_by_ipv4(l3_data_ptr); |
| 245 | } else if (typeorlength == ETHERTYPE_IPV6) { |
| 246 | tid = ol_tx_tid_by_ipv6(l3_data_ptr); |
| 247 | } else if (ETHERTYPE_IS_EAPOL_WAPI(typeorlength)) { |
| 248 | /* EAPOL go with voice priority*/ |
| 249 | tid = TX_EAPOL_TID; |
| 250 | } else if (typeorlength == ETHERTYPE_ARP) { |
| 251 | tid = TX_ARP_TID; |
| 252 | } else { |
| 253 | /* For non-IP case, use default TID */ |
| 254 | tid = TX_DEFAULT_TID; |
| 255 | } |
| 256 | return tid; |
| 257 | } |
| 258 | |
| 259 | static inline A_UINT8 |
| 260 | ol_tx_tid_by_raw_type( |
| 261 | A_UINT8 *datap, |
| 262 | struct ol_txrx_msdu_info_t *tx_msdu_info) |
| 263 | { |
| 264 | A_UINT8 tid = HTT_TX_EXT_TID_NON_QOS_MCAST_BCAST; |
| 265 | |
| 266 | /* adjust hdr_ptr to RA */ |
| 267 | struct ieee80211_frame *wh = (struct ieee80211_frame *)datap; |
| 268 | |
| 269 | /* FIXME: This code does not handle 4 address formats. The QOS field |
| 270 | * is not at usual location. |
| 271 | */ |
| 272 | if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == |
| 273 | IEEE80211_FC0_TYPE_DATA) { |
| 274 | /* dot11 encapsulated frame */ |
| 275 | struct ieee80211_qosframe *whqos = |
| 276 | (struct ieee80211_qosframe *)datap; |
| 277 | if (whqos->i_fc[0] & IEEE80211_FC0_SUBTYPE_QOS) |
| 278 | tid = whqos->i_qos[0] & IEEE80211_QOS_TID; |
| 279 | else |
| 280 | tid = HTT_NON_QOS_TID; |
| 281 | } else { |
| 282 | /* |
| 283 | * This function should only be applied to data frames. |
| 284 | * For management frames, we already know to use |
| 285 | * HTT_TX_EXT_TID_MGMT. |
| 286 | */ |
| 287 | qdf_assert(0); |
| 288 | } |
| 289 | return tid; |
| 290 | } |
| 291 | |
| 292 | static A_UINT8 |
| 293 | ol_tx_tid( |
| 294 | struct ol_txrx_pdev_t *pdev, |
| 295 | qdf_nbuf_t tx_nbuf, |
| 296 | struct ol_txrx_msdu_info_t *tx_msdu_info) |
| 297 | { |
| 298 | A_UINT8 *datap = qdf_nbuf_data(tx_nbuf); |
| 299 | A_UINT8 tid; |
| 300 | |
| 301 | if (pdev->frame_format == wlan_frm_fmt_raw) { |
| 302 | tx_msdu_info->htt.info.l2_hdr_type = htt_pkt_type_raw; |
| 303 | |
| 304 | ol_tx_set_ether_type(datap, tx_msdu_info); |
| 305 | tid = tx_msdu_info->htt.info.ext_tid == |
| 306 | QDF_NBUF_TX_EXT_TID_INVALID ? |
| 307 | ol_tx_tid_by_raw_type(datap, tx_msdu_info) : |
| 308 | tx_msdu_info->htt.info.ext_tid; |
| 309 | } else if (pdev->frame_format == wlan_frm_fmt_802_3) { |
| 310 | tx_msdu_info->htt.info.l2_hdr_type = htt_pkt_type_ethernet; |
| 311 | |
| 312 | ol_tx_set_ether_type(datap, tx_msdu_info); |
| 313 | tid = |
| 314 | tx_msdu_info->htt.info.ext_tid == |
| 315 | QDF_NBUF_TX_EXT_TID_INVALID ? |
| 316 | ol_tx_tid_by_ether_type(datap, tx_msdu_info) : |
| 317 | tx_msdu_info->htt.info.ext_tid; |
| 318 | } else if (pdev->frame_format == wlan_frm_fmt_native_wifi) { |
| 319 | struct llc_snap_hdr_t *llc; |
| 320 | |
| 321 | tx_msdu_info->htt.info.l2_hdr_type = htt_pkt_type_native_wifi; |
| 322 | tx_msdu_info->htt.info.l3_hdr_offset = |
| 323 | sizeof(struct ieee80211_frame); |
| 324 | llc = (struct llc_snap_hdr_t *) |
| 325 | (datap + tx_msdu_info->htt.info.l3_hdr_offset); |
| 326 | tx_msdu_info->htt.info.ethertype = |
| 327 | (llc->ethertype[0] << 8) | llc->ethertype[1]; |
| 328 | /* |
| 329 | * Native WiFi is a special case of "raw" 802.11 header format. |
| 330 | * However, we expect that for all cases that use native WiFi, |
| 331 | * the TID will be directly specified out of band. |
| 332 | */ |
| 333 | tid = tx_msdu_info->htt.info.ext_tid; |
| 334 | } else { |
| 335 | QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_FATAL, |
| 336 | "Invalid standard frame type: %d\n", |
| 337 | pdev->frame_format); |
| 338 | qdf_assert(0); |
| 339 | tid = HTT_TX_EXT_TID_INVALID; |
| 340 | } |
| 341 | return tid; |
| 342 | } |
| 343 | |
| 344 | #if defined(CONFIG_HL_SUPPORT) && defined(FEATURE_WLAN_TDLS) |
| 345 | static inline |
| 346 | struct ol_txrx_peer_t *ol_tx_tdls_peer_find(struct ol_txrx_pdev_t *pdev, |
| 347 | struct ol_txrx_vdev_t *vdev, |
| 348 | uint8_t *peer_id) |
| 349 | { |
| 350 | struct ol_txrx_peer_t *peer = NULL; |
| 351 | |
| 352 | if (vdev->hlTdlsFlag) { |
| 353 | peer = ol_txrx_find_peer_by_addr(pdev, |
| 354 | vdev->hl_tdls_ap_mac_addr.raw, |
| 355 | peer_id); |
| 356 | if (peer && (peer->peer_ids[0] == HTT_INVALID_PEER_ID)) { |
| 357 | peer = NULL; |
| 358 | } else { |
| 359 | if (peer) |
| 360 | qdf_atomic_inc(&peer->ref_cnt); |
| 361 | } |
| 362 | } |
| 363 | if (!peer) |
| 364 | peer = ol_txrx_assoc_peer_find(vdev); |
| 365 | |
| 366 | return peer; |
| 367 | } |
| 368 | |
| 369 | #else |
| 370 | struct ol_txrx_peer_t *ol_tx_tdls_peer_find(struct ol_txrx_pdev_t *pdev, |
| 371 | struct ol_txrx_vdev_t *vdev, |
| 372 | uint8_t *peer_id) |
| 373 | { |
| 374 | struct ol_txrx_peer_t *peer = NULL; |
| 375 | peer = ol_txrx_assoc_peer_find(vdev); |
| 376 | |
| 377 | return peer; |
| 378 | } |
| 379 | |
| 380 | |
| 381 | #endif |
| 382 | |
| 383 | struct ol_tx_frms_queue_t * |
| 384 | ol_tx_classify( |
| 385 | struct ol_txrx_vdev_t *vdev, |
| 386 | struct ol_tx_desc_t *tx_desc, |
| 387 | qdf_nbuf_t tx_nbuf, |
| 388 | struct ol_txrx_msdu_info_t *tx_msdu_info) |
| 389 | { |
| 390 | struct ol_txrx_pdev_t *pdev = vdev->pdev; |
| 391 | struct ol_txrx_peer_t *peer = NULL; |
| 392 | struct ol_tx_frms_queue_t *txq = NULL; |
| 393 | A_UINT8 *dest_addr; |
| 394 | A_UINT8 tid; |
| 395 | #if defined(CONFIG_HL_SUPPORT) && defined(FEATURE_WLAN_TDLS) |
| 396 | u_int8_t peer_id; |
| 397 | #endif |
| 398 | |
| 399 | TX_SCHED_DEBUG_PRINT("Enter %s\n", __func__); |
| 400 | dest_addr = ol_tx_dest_addr_find(pdev, tx_nbuf); |
| 401 | if ((IEEE80211_IS_MULTICAST(dest_addr)) || |
| 402 | (vdev->opmode == wlan_op_mode_ocb)) { |
| 403 | txq = &vdev->txqs[OL_TX_VDEV_MCAST_BCAST]; |
| 404 | tx_msdu_info->htt.info.ext_tid = |
| 405 | HTT_TX_EXT_TID_NON_QOS_MCAST_BCAST; |
| 406 | if (vdev->opmode == wlan_op_mode_sta) { |
| 407 | /* |
| 408 | * The STA sends a frame with a broadcast |
| 409 | * dest addr (DA) as a |
| 410 | * unicast frame to the AP's receive addr (RA). |
| 411 | * Find the peer object that represents the AP |
| 412 | * that the STA is associated with. |
| 413 | */ |
| 414 | peer = ol_txrx_assoc_peer_find(vdev); |
| 415 | if (!peer) { |
| 416 | QDF_TRACE(QDF_MODULE_ID_TXRX, |
| 417 | QDF_TRACE_LEVEL_ERROR, |
| 418 | "Error: STA %p (%02x:%02x:%02x:%02x:%02x:%02x) trying to send bcast DA tx data frame w/o association\n", |
| 419 | vdev, |
| 420 | vdev->mac_addr.raw[0], |
| 421 | vdev->mac_addr.raw[1], |
| 422 | vdev->mac_addr.raw[2], |
| 423 | vdev->mac_addr.raw[3], |
| 424 | vdev->mac_addr.raw[4], |
| 425 | vdev->mac_addr.raw[5]); |
| 426 | return NULL; /* error */ |
| 427 | } else if ((peer->security[ |
| 428 | OL_TXRX_PEER_SECURITY_MULTICAST].sec_type |
| 429 | != htt_sec_type_wapi) && |
| 430 | (qdf_nbuf_is_ipv4_pkt(tx_nbuf) == true)) { |
Nirav Shah | 5e74bb8 | 2016-07-20 16:01:27 +0530 | [diff] [blame^] | 431 | if (QDF_NBUF_CB_PACKET_TYPE_DHCP == |
| 432 | QDF_NBUF_CB_GET_PACKET_TYPE( |
Siddarth Poddar | b2011f6 | 2016-04-27 20:45:42 +0530 | [diff] [blame] | 433 | tx_nbuf)) { |
| 434 | /* DHCP frame to go with |
| 435 | * voice priority |
| 436 | */ |
| 437 | txq = &peer->txqs[TX_DHCP_TID]; |
| 438 | tx_msdu_info->htt.info.ext_tid = |
| 439 | TX_DHCP_TID; |
| 440 | } |
| 441 | } |
| 442 | /* |
| 443 | * The following line assumes each peer object has a |
| 444 | * single ID. This is currently true, and is expected |
| 445 | * to remain true. |
| 446 | */ |
| 447 | tx_msdu_info->htt.info.peer_id = peer->peer_ids[0]; |
| 448 | } else if (vdev->opmode == wlan_op_mode_ocb) { |
| 449 | tx_msdu_info->htt.info.peer_id = HTT_INVALID_PEER_ID; |
| 450 | /* In OCB mode, don't worry about the peer. |
| 451 | *We don't need it. */ |
| 452 | peer = NULL; |
| 453 | } else { |
| 454 | tx_msdu_info->htt.info.peer_id = HTT_INVALID_PEER_ID; |
| 455 | /* |
| 456 | * Look up the vdev's BSS peer, so that the |
| 457 | * classify_extension function can check whether to |
| 458 | * encrypt multicast / broadcast frames. |
| 459 | */ |
| 460 | peer = ol_txrx_peer_find_hash_find(pdev, |
| 461 | vdev->mac_addr.raw, |
| 462 | 0, 1); |
| 463 | if (!peer) { |
| 464 | QDF_TRACE(QDF_MODULE_ID_TXRX, |
| 465 | QDF_TRACE_LEVEL_ERROR, |
| 466 | "Error: vdev %p (%02x:%02x:%02x:%02x:%02x:%02x) trying to send bcast/mcast, but no self-peer found\n", |
| 467 | vdev, |
| 468 | vdev->mac_addr.raw[0], |
| 469 | vdev->mac_addr.raw[1], |
| 470 | vdev->mac_addr.raw[2], |
| 471 | vdev->mac_addr.raw[3], |
| 472 | vdev->mac_addr.raw[4], |
| 473 | vdev->mac_addr.raw[5]); |
| 474 | return NULL; /* error */ |
| 475 | } |
| 476 | } |
| 477 | tx_msdu_info->htt.info.is_unicast = false; |
| 478 | } else { |
| 479 | /* tid would be overwritten for non QoS case*/ |
| 480 | tid = ol_tx_tid(pdev, tx_nbuf, tx_msdu_info); |
| 481 | if ((HTT_TX_EXT_TID_INVALID == tid) || |
| 482 | (tid >= OL_TX_NUM_TIDS)) { |
| 483 | QDF_TRACE(QDF_MODULE_ID_TXRX, |
| 484 | QDF_TRACE_LEVEL_ERROR, |
| 485 | "%s Error: could not classify packet into valid TID(%d).\n", |
| 486 | __func__, tid); |
| 487 | return NULL; |
| 488 | } |
| 489 | #ifdef ATH_SUPPORT_WAPI |
| 490 | /* Check to see if a frame is a WAI frame */ |
| 491 | if (tx_msdu_info->htt.info.ethertype == ETHERTYPE_WAI) { |
| 492 | /* WAI frames should not be encrypted */ |
| 493 | tx_msdu_info->htt.action.do_encrypt = 0; |
| 494 | QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_INFO, |
| 495 | "Tx Frame is a WAI frame\n"); |
| 496 | } |
| 497 | #endif /* ATH_SUPPORT_WAPI */ |
| 498 | |
| 499 | /* |
| 500 | * Find the peer and increment its reference count. |
| 501 | * If this vdev is an AP, use the dest addr (DA) to determine |
| 502 | * which peer STA this unicast data frame is for. |
| 503 | * If this vdev is a STA, the unicast data frame is for the |
| 504 | * AP the STA is associated with. |
| 505 | */ |
| 506 | if (vdev->opmode == wlan_op_mode_sta) { |
| 507 | /* |
| 508 | * TO DO: |
| 509 | * To support TDLS, first check if there is a TDLS |
| 510 | * peer STA, |
| 511 | * and if so, check if the DA matches the TDLS peer |
| 512 | * STA's MAC address. If there is no peer TDLS STA, |
| 513 | * or if the DA is not the TDLS STA's address, |
| 514 | * then the frame is either for the AP itself, or is |
| 515 | * supposed to be sent to the AP for forwarding. |
| 516 | */ |
| 517 | #if 0 |
| 518 | if (vdev->num_tdls_peers > 0) { |
| 519 | peer = NULL; |
| 520 | for (i = 0; i < vdev->num_tdls_peers; i++) { |
| 521 | int differs = adf_os_mem_cmp( |
| 522 | vdev->tdls_peers[i]-> |
| 523 | mac_addr.raw, |
| 524 | dest_addr, |
| 525 | OL_TXRX_MAC_ADDR_LEN); |
| 526 | if (!differs) { |
| 527 | peer = vdev->tdls_peers[i]; |
| 528 | break; |
| 529 | } |
| 530 | } |
| 531 | } else { |
| 532 | /* send to AP */ |
| 533 | peer = ol_txrx_assoc_peer_find(vdev); |
| 534 | } |
| 535 | #endif |
| 536 | |
| 537 | peer = ol_tx_tdls_peer_find(pdev, vdev, &peer_id); |
| 538 | } else { |
| 539 | peer = ol_txrx_peer_find_hash_find(pdev, dest_addr, |
| 540 | 0, 1); |
| 541 | } |
| 542 | tx_msdu_info->htt.info.is_unicast = true; |
| 543 | if (!peer) { |
| 544 | /* |
| 545 | * Unicast data xfer can only happen to an |
| 546 | * associated peer. It is illegitimate to send unicast |
| 547 | * data if there is no peer to send it to. |
| 548 | */ |
| 549 | QDF_TRACE(QDF_MODULE_ID_TXRX, |
| 550 | QDF_TRACE_LEVEL_ERROR, |
| 551 | "Error: vdev %p (%02x:%02x:%02x:%02x:%02x:%02x) trying to send unicast tx data frame to an unknown peer\n", |
| 552 | vdev, |
| 553 | vdev->mac_addr.raw[0], vdev->mac_addr.raw[1], |
| 554 | vdev->mac_addr.raw[2], vdev->mac_addr.raw[3], |
| 555 | vdev->mac_addr.raw[4], vdev->mac_addr.raw[5]); |
| 556 | return NULL; /* error */ |
| 557 | } |
| 558 | TX_SCHED_DEBUG_PRINT("Peer found\n"); |
| 559 | if (!peer->qos_capable) { |
| 560 | tid = OL_TX_NON_QOS_TID; |
| 561 | } else if ((peer->security[ |
| 562 | OL_TXRX_PEER_SECURITY_UNICAST].sec_type |
| 563 | != htt_sec_type_wapi) && |
| 564 | (qdf_nbuf_is_ipv4_pkt(tx_nbuf) == true)) { |
Nirav Shah | 5e74bb8 | 2016-07-20 16:01:27 +0530 | [diff] [blame^] | 565 | if (QDF_NBUF_CB_PACKET_TYPE_DHCP == |
| 566 | QDF_NBUF_CB_GET_PACKET_TYPE(tx_nbuf)) |
Siddarth Poddar | b2011f6 | 2016-04-27 20:45:42 +0530 | [diff] [blame] | 567 | /* DHCP frame to go with voice priority */ |
| 568 | tid = TX_DHCP_TID; |
| 569 | } |
| 570 | |
| 571 | /* Only allow encryption when in authenticated state */ |
| 572 | if (OL_TXRX_PEER_STATE_AUTH != peer->state) |
| 573 | tx_msdu_info->htt.action.do_encrypt = 0; |
| 574 | |
| 575 | txq = &peer->txqs[tid]; |
| 576 | tx_msdu_info->htt.info.ext_tid = tid; |
| 577 | /* |
| 578 | * The following line assumes each peer object has a single ID. |
| 579 | * This is currently true, and is expected to remain true. |
| 580 | */ |
| 581 | tx_msdu_info->htt.info.peer_id = peer->peer_ids[0]; |
| 582 | /* |
| 583 | * WORKAROUND - check that the peer ID is valid. |
| 584 | * If tx data is provided before ol_rx_peer_map_handler is |
| 585 | * called to record the peer ID specified by the target, |
| 586 | * then we could end up here with an invalid peer ID. |
| 587 | * TO DO: rather than dropping the tx frame, pause the txq it |
| 588 | * goes into, then fill in the peer ID for the entries in the |
| 589 | * txq when the peer_map event provides the peer ID, and then |
| 590 | * unpause the txq. |
| 591 | */ |
| 592 | if (tx_msdu_info->htt.info.peer_id == HTT_INVALID_PEER_ID) { |
| 593 | if (peer) { |
| 594 | TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, |
| 595 | "%s: remove the peer for invalid peer_id %p\n", |
| 596 | __func__, peer); |
| 597 | /* remove the peer reference added above */ |
| 598 | ol_txrx_peer_unref_delete(peer); |
| 599 | tx_msdu_info->peer = NULL; |
| 600 | } |
| 601 | return NULL; |
| 602 | } |
| 603 | } |
| 604 | tx_msdu_info->peer = peer; |
| 605 | if (ol_if_tx_bad_peer_txq_overflow(pdev, peer, txq)) |
| 606 | return NULL; |
| 607 | /* |
| 608 | * If relevant, do a deeper inspection to determine additional |
| 609 | * characteristics of the tx frame. |
| 610 | * If the frame is invalid, then the txq will be set to NULL to |
| 611 | * indicate an error. |
| 612 | */ |
| 613 | OL_TX_CLASSIFY_EXTENSION(vdev, tx_desc, tx_nbuf, tx_msdu_info, txq); |
| 614 | if (IEEE80211_IS_MULTICAST(dest_addr) && vdev->opmode != |
| 615 | wlan_op_mode_sta && tx_msdu_info->peer != |
| 616 | NULL) { |
| 617 | TXRX_PRINT(TXRX_PRINT_LEVEL_INFO1, |
| 618 | "%s: remove the peer reference %p\n", |
| 619 | __func__, peer); |
| 620 | /* remove the peer reference added above */ |
| 621 | ol_txrx_peer_unref_delete(tx_msdu_info->peer); |
| 622 | /* Making peer NULL in case if multicast non STA mode */ |
| 623 | tx_msdu_info->peer = NULL; |
| 624 | } |
| 625 | |
| 626 | /* Whether this frame can download though HTT2 data pipe or not. */ |
| 627 | OL_TX_CLASSIFY_HTT2_EXTENSION(vdev, tx_nbuf, tx_msdu_info); |
| 628 | |
| 629 | /* Update Tx Queue info */ |
| 630 | tx_desc->txq = txq; |
| 631 | |
| 632 | TX_SCHED_DEBUG_PRINT("Leave %s\n", __func__); |
| 633 | return txq; |
| 634 | } |
| 635 | |
| 636 | struct ol_tx_frms_queue_t * |
| 637 | ol_tx_classify_mgmt( |
| 638 | struct ol_txrx_vdev_t *vdev, |
| 639 | struct ol_tx_desc_t *tx_desc, |
| 640 | qdf_nbuf_t tx_nbuf, |
| 641 | struct ol_txrx_msdu_info_t *tx_msdu_info) |
| 642 | { |
| 643 | struct ol_txrx_pdev_t *pdev = vdev->pdev; |
| 644 | struct ol_txrx_peer_t *peer = NULL; |
| 645 | struct ol_tx_frms_queue_t *txq = NULL; |
| 646 | A_UINT8 *dest_addr; |
| 647 | union ol_txrx_align_mac_addr_t local_mac_addr_aligned, *mac_addr; |
| 648 | |
| 649 | TX_SCHED_DEBUG_PRINT("Enter %s\n", __func__); |
| 650 | dest_addr = ol_tx_dest_addr_find(pdev, tx_nbuf); |
| 651 | if (IEEE80211_IS_MULTICAST(dest_addr)) { |
| 652 | /* |
| 653 | * AP: beacons are broadcast, |
| 654 | * public action frames (e.g. extended channel |
| 655 | * switch announce) may be broadcast |
| 656 | * STA: probe requests can be either broadcast or unicast |
| 657 | */ |
| 658 | txq = &vdev->txqs[OL_TX_VDEV_DEFAULT_MGMT]; |
| 659 | tx_msdu_info->htt.info.peer_id = HTT_INVALID_PEER_ID; |
| 660 | tx_msdu_info->peer = NULL; |
| 661 | tx_msdu_info->htt.info.is_unicast = 0; |
| 662 | } else { |
| 663 | /* |
| 664 | * Find the peer and increment its reference count. |
| 665 | * If this vdev is an AP, use the receiver addr (RA) to |
| 666 | * determine which peer STA this unicast mgmt frame is for. |
| 667 | * If this vdev is a STA, the unicast mgmt frame is for the |
| 668 | * AP the STA is associated with. |
| 669 | * Probe request / response and Assoc request / response are |
| 670 | * sent before the peer exists - in this case, use the |
| 671 | * vdev's default tx queue. |
| 672 | */ |
| 673 | if (vdev->opmode == wlan_op_mode_sta) { |
| 674 | /* |
| 675 | * TO DO: |
| 676 | * To support TDLS, first check if there is a TDLS |
| 677 | * peer STA, and if so, check if the DA matches |
| 678 | * the TDLS peer STA's MAC address. |
| 679 | */ |
| 680 | peer = ol_txrx_assoc_peer_find(vdev); |
| 681 | /* |
| 682 | * Some special case(preauth for example) needs to send |
| 683 | * unicast mgmt frame to unassociated AP. In such case, |
| 684 | * we need to check if dest addr match the associated |
| 685 | * peer addr. If not, we set peer as NULL to queue this |
| 686 | * frame to vdev queue. |
| 687 | */ |
| 688 | if (peer) { |
| 689 | qdf_mem_copy( |
| 690 | &local_mac_addr_aligned.raw[0], |
| 691 | dest_addr, OL_TXRX_MAC_ADDR_LEN); |
| 692 | mac_addr = &local_mac_addr_aligned; |
| 693 | if (ol_txrx_peer_find_mac_addr_cmp( |
| 694 | mac_addr, |
| 695 | &peer->mac_addr) != 0) { |
| 696 | qdf_atomic_dec(&peer->ref_cnt); |
Mohit Khanna | 3aee131 | 2016-07-28 19:07:05 -0700 | [diff] [blame] | 697 | qdf_print("%s: peer %p peer->ref_cnt %d", |
| 698 | __func__, peer, |
| 699 | qdf_atomic_read |
| 700 | (&peer->ref_cnt)); |
Siddarth Poddar | b2011f6 | 2016-04-27 20:45:42 +0530 | [diff] [blame] | 701 | peer = NULL; |
| 702 | } |
| 703 | } |
| 704 | } else { |
| 705 | /* find the peer and increment its reference count */ |
| 706 | peer = ol_txrx_peer_find_hash_find(pdev, dest_addr, |
| 707 | 0, 1); |
| 708 | } |
| 709 | tx_msdu_info->peer = peer; |
| 710 | if (!peer) { |
| 711 | txq = &vdev->txqs[OL_TX_VDEV_DEFAULT_MGMT]; |
| 712 | tx_msdu_info->htt.info.peer_id = HTT_INVALID_PEER_ID; |
| 713 | } else { |
| 714 | txq = &peer->txqs[HTT_TX_EXT_TID_MGMT]; |
| 715 | tx_msdu_info->htt.info.ext_tid = HTT_TX_EXT_TID_MGMT; |
| 716 | /* |
| 717 | * The following line assumes each peer object has a |
| 718 | * single ID. This is currently true, and is expected |
| 719 | * to remain true. |
| 720 | */ |
| 721 | tx_msdu_info->htt.info.peer_id = peer->peer_ids[0]; |
| 722 | } |
| 723 | tx_msdu_info->htt.info.is_unicast = 1; |
| 724 | } |
| 725 | /* |
| 726 | * If relevant, do a deeper inspection to determine additional |
| 727 | * characteristics of the tx frame. |
| 728 | * If the frame is invalid, then the txq will be set to NULL to |
| 729 | * indicate an error. |
| 730 | */ |
| 731 | OL_TX_CLASSIFY_MGMT_EXTENSION(vdev, tx_desc, tx_nbuf, |
| 732 | tx_msdu_info, txq); |
| 733 | |
| 734 | /* Whether this frame can download though HTT2 data pipe or not. */ |
| 735 | OL_TX_CLASSIFY_HTT2_EXTENSION(vdev, tx_nbuf, tx_msdu_info); |
| 736 | |
| 737 | /* Update Tx Queue info */ |
| 738 | tx_desc->txq = txq; |
| 739 | |
| 740 | TX_SCHED_DEBUG_PRINT("Leave %s\n", __func__); |
| 741 | return txq; |
| 742 | } |
| 743 | |
| 744 | A_STATUS |
| 745 | ol_tx_classify_extension( |
| 746 | struct ol_txrx_vdev_t *vdev, |
| 747 | struct ol_tx_desc_t *tx_desc, |
| 748 | qdf_nbuf_t tx_msdu, |
| 749 | struct ol_txrx_msdu_info_t *msdu_info) |
| 750 | { |
| 751 | A_UINT8 *datap = qdf_nbuf_data(tx_msdu); |
| 752 | struct ol_txrx_peer_t *peer; |
| 753 | int which_key; |
| 754 | |
| 755 | /* |
| 756 | * The following msdu_info fields were already filled in by the |
| 757 | * ol_tx entry function or the regular ol_tx_classify function: |
| 758 | * htt.info.vdev_id (ol_tx_hl or ol_tx_non_std_hl) |
| 759 | * htt.info.ext_tid (ol_tx_non_std_hl or ol_tx_classify) |
| 760 | * htt.info.frame_type (ol_tx_hl or ol_tx_non_std_hl) |
| 761 | * htt.info.l2_hdr_type (ol_tx_hl or ol_tx_non_std_hl) |
| 762 | * htt.info.is_unicast (ol_tx_classify) |
| 763 | * htt.info.peer_id (ol_tx_classify) |
| 764 | * peer (ol_tx_classify) |
| 765 | * if (is_unicast) { |
| 766 | * htt.info.ethertype (ol_tx_classify) |
| 767 | * htt.info.l3_hdr_offset (ol_tx_classify) |
| 768 | * } |
| 769 | * The following fields need to be filled in by this function: |
| 770 | * if (!is_unicast) { |
| 771 | * htt.info.ethertype |
| 772 | * htt.info.l3_hdr_offset |
| 773 | * } |
| 774 | * htt.action.band (NOT CURRENTLY USED) |
| 775 | * htt.action.do_encrypt |
| 776 | * htt.action.do_tx_complete |
| 777 | * The following fields are not needed for data frames, and can |
| 778 | * be left uninitialized: |
| 779 | * htt.info.frame_subtype |
| 780 | */ |
| 781 | |
| 782 | if (!msdu_info->htt.info.is_unicast) { |
| 783 | int l2_hdr_size; |
| 784 | A_UINT16 ethertype; |
| 785 | |
| 786 | if (msdu_info->htt.info.l2_hdr_type == htt_pkt_type_ethernet) { |
| 787 | struct ethernet_hdr_t *eh; |
| 788 | |
| 789 | eh = (struct ethernet_hdr_t *)datap; |
| 790 | l2_hdr_size = sizeof(*eh); |
| 791 | ethertype = (eh->ethertype[0] << 8) | eh->ethertype[1]; |
| 792 | |
| 793 | if (ethertype == ETHERTYPE_VLAN) { |
| 794 | struct ethernet_vlan_hdr_t *evh; |
| 795 | |
| 796 | evh = (struct ethernet_vlan_hdr_t *)datap; |
| 797 | l2_hdr_size = sizeof(*evh); |
| 798 | ethertype = (evh->ethertype[0] << 8) | |
| 799 | evh->ethertype[1]; |
| 800 | } |
| 801 | |
| 802 | if (!IS_ETHERTYPE(ethertype)) { |
| 803 | /* 802.3 header*/ |
| 804 | struct llc_snap_hdr_t *llc = |
| 805 | (struct llc_snap_hdr_t *)(datap + |
| 806 | l2_hdr_size); |
| 807 | ethertype = (llc->ethertype[0] << 8) | |
| 808 | llc->ethertype[1]; |
| 809 | l2_hdr_size += sizeof(*llc); |
| 810 | } |
| 811 | msdu_info->htt.info.l3_hdr_offset = l2_hdr_size; |
| 812 | msdu_info->htt.info.ethertype = ethertype; |
| 813 | } else { /* 802.11 */ |
| 814 | struct llc_snap_hdr_t *llc; |
| 815 | l2_hdr_size = ol_txrx_ieee80211_hdrsize(datap); |
| 816 | llc = (struct llc_snap_hdr_t *)(datap + l2_hdr_size); |
| 817 | ethertype = (llc->ethertype[0] << 8) | |
| 818 | llc->ethertype[1]; |
| 819 | /* |
| 820 | * Don't include the LLC/SNAP header in l2_hdr_size, |
| 821 | * because l3_hdr_offset is actually supposed to refer |
| 822 | * to the header after the 802.3 or 802.11 header, |
| 823 | * which could be a LLC/SNAP header rather |
| 824 | * than the L3 header. |
| 825 | */ |
| 826 | } |
| 827 | msdu_info->htt.info.l3_hdr_offset = l2_hdr_size; |
| 828 | msdu_info->htt.info.ethertype = ethertype; |
| 829 | which_key = txrx_sec_mcast; |
| 830 | } else { |
| 831 | which_key = txrx_sec_ucast; |
| 832 | } |
| 833 | peer = msdu_info->peer; |
| 834 | /* |
| 835 | * msdu_info->htt.action.do_encrypt is initially set in ol_tx_desc_hl. |
| 836 | * Add more check here. |
| 837 | */ |
| 838 | msdu_info->htt.action.do_encrypt = (!peer) ? 0 : |
| 839 | (peer->security[which_key].sec_type == htt_sec_type_none) ? 0 : |
| 840 | msdu_info->htt.action.do_encrypt; |
| 841 | /* |
| 842 | * For systems that have a frame by frame spec for whether to receive |
| 843 | * a tx completion notification, use the tx completion notification |
| 844 | * only for certain management frames, not for data frames. |
| 845 | * (In the future, this may be changed slightly, e.g. to request a |
| 846 | * tx completion notification for the final EAPOL message sent by a |
| 847 | * STA during the key delivery handshake.) |
| 848 | */ |
| 849 | msdu_info->htt.action.do_tx_complete = 0; |
| 850 | |
| 851 | return A_OK; |
| 852 | } |
| 853 | |
| 854 | A_STATUS |
| 855 | ol_tx_classify_mgmt_extension( |
| 856 | struct ol_txrx_vdev_t *vdev, |
| 857 | struct ol_tx_desc_t *tx_desc, |
| 858 | qdf_nbuf_t tx_msdu, |
| 859 | struct ol_txrx_msdu_info_t *msdu_info) |
| 860 | { |
| 861 | struct ieee80211_frame *wh; |
| 862 | |
| 863 | /* |
| 864 | * The following msdu_info fields were already filled in by the |
| 865 | * ol_tx entry function or the regular ol_tx_classify_mgmt function: |
| 866 | * htt.info.vdev_id (ol_txrx_mgmt_send) |
| 867 | * htt.info.frame_type (ol_txrx_mgmt_send) |
| 868 | * htt.info.l2_hdr_type (ol_txrx_mgmt_send) |
| 869 | * htt.action.do_tx_complete (ol_txrx_mgmt_send) |
| 870 | * htt.info.peer_id (ol_tx_classify_mgmt) |
| 871 | * htt.info.ext_tid (ol_tx_classify_mgmt) |
| 872 | * htt.info.is_unicast (ol_tx_classify_mgmt) |
| 873 | * peer (ol_tx_classify_mgmt) |
| 874 | * The following fields need to be filled in by this function: |
| 875 | * htt.info.frame_subtype |
| 876 | * htt.info.l3_hdr_offset |
| 877 | * htt.action.band (NOT CURRENTLY USED) |
| 878 | * The following fields are not needed for mgmt frames, and can |
| 879 | * be left uninitialized: |
| 880 | * htt.info.ethertype |
| 881 | * htt.action.do_encrypt |
| 882 | * (This will be filled in by other SW, which knows whether |
| 883 | * the peer has robust-managment-frames enabled.) |
| 884 | */ |
| 885 | wh = (struct ieee80211_frame *)qdf_nbuf_data(tx_msdu); |
| 886 | msdu_info->htt.info.frame_subtype = |
| 887 | (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) >> |
| 888 | IEEE80211_FC0_SUBTYPE_SHIFT; |
| 889 | msdu_info->htt.info.l3_hdr_offset = sizeof(struct ieee80211_frame); |
| 890 | |
| 891 | return A_OK; |
| 892 | } |
| 893 | |
| 894 | #endif /* defined(CONFIG_HL_SUPPORT) */ |