1 // SPDX-License-Identifier: ISC 2 /* 3 * Copyright (c) 2012 Broadcom Corporation 4 */ 5 6 7 #ifndef FWEH_H_ 8 #define FWEH_H_ 9 10 #include <asm/unaligned.h> 11 #include <linux/skbuff.h> 12 #include <linux/if_ether.h> 13 #include <linux/if.h> 14 15 /* formward declarations */ 16 struct brcmf_pub; 17 struct brcmf_if; 18 struct brcmf_cfg80211_info; 19 20 /* list of firmware events */ 21 #define BRCMF_FWEH_EVENT_ENUM_DEFLIST \ 22 BRCMF_ENUM_DEF(SET_SSID, 0) \ 23 BRCMF_ENUM_DEF(JOIN, 1) \ 24 BRCMF_ENUM_DEF(START, 2) \ 25 BRCMF_ENUM_DEF(AUTH, 3) \ 26 BRCMF_ENUM_DEF(AUTH_IND, 4) \ 27 BRCMF_ENUM_DEF(DEAUTH, 5) \ 28 BRCMF_ENUM_DEF(DEAUTH_IND, 6) \ 29 BRCMF_ENUM_DEF(ASSOC, 7) \ 30 BRCMF_ENUM_DEF(ASSOC_IND, 8) \ 31 BRCMF_ENUM_DEF(REASSOC, 9) \ 32 BRCMF_ENUM_DEF(REASSOC_IND, 10) \ 33 BRCMF_ENUM_DEF(DISASSOC, 11) \ 34 BRCMF_ENUM_DEF(DISASSOC_IND, 12) \ 35 BRCMF_ENUM_DEF(QUIET_START, 13) \ 36 BRCMF_ENUM_DEF(QUIET_END, 14) \ 37 BRCMF_ENUM_DEF(BEACON_RX, 15) \ 38 BRCMF_ENUM_DEF(LINK, 16) \ 39 BRCMF_ENUM_DEF(MIC_ERROR, 17) \ 40 BRCMF_ENUM_DEF(NDIS_LINK, 18) \ 41 BRCMF_ENUM_DEF(ROAM, 19) \ 42 BRCMF_ENUM_DEF(TXFAIL, 20) \ 43 BRCMF_ENUM_DEF(PMKID_CACHE, 21) \ 44 BRCMF_ENUM_DEF(RETROGRADE_TSF, 22) \ 45 BRCMF_ENUM_DEF(PRUNE, 23) \ 46 BRCMF_ENUM_DEF(AUTOAUTH, 24) \ 47 BRCMF_ENUM_DEF(EAPOL_MSG, 25) \ 48 BRCMF_ENUM_DEF(SCAN_COMPLETE, 26) \ 49 BRCMF_ENUM_DEF(ADDTS_IND, 27) \ 50 BRCMF_ENUM_DEF(DELTS_IND, 28) \ 51 BRCMF_ENUM_DEF(BCNSENT_IND, 29) \ 52 BRCMF_ENUM_DEF(BCNRX_MSG, 30) \ 53 BRCMF_ENUM_DEF(BCNLOST_MSG, 31) \ 54 BRCMF_ENUM_DEF(ROAM_PREP, 32) \ 55 BRCMF_ENUM_DEF(PFN_NET_FOUND, 33) \ 56 BRCMF_ENUM_DEF(PFN_NET_LOST, 34) \ 57 BRCMF_ENUM_DEF(RESET_COMPLETE, 35) \ 58 BRCMF_ENUM_DEF(JOIN_START, 36) \ 59 BRCMF_ENUM_DEF(ROAM_START, 37) \ 60 BRCMF_ENUM_DEF(ASSOC_START, 38) \ 61 BRCMF_ENUM_DEF(IBSS_ASSOC, 39) \ 62 BRCMF_ENUM_DEF(RADIO, 40) \ 63 BRCMF_ENUM_DEF(PSM_WATCHDOG, 41) \ 64 BRCMF_ENUM_DEF(PROBREQ_MSG, 44) \ 65 BRCMF_ENUM_DEF(SCAN_CONFIRM_IND, 45) \ 66 BRCMF_ENUM_DEF(PSK_SUP, 46) \ 67 BRCMF_ENUM_DEF(COUNTRY_CODE_CHANGED, 47) \ 68 BRCMF_ENUM_DEF(EXCEEDED_MEDIUM_TIME, 48) \ 69 BRCMF_ENUM_DEF(ICV_ERROR, 49) \ 70 BRCMF_ENUM_DEF(UNICAST_DECODE_ERROR, 50) \ 71 BRCMF_ENUM_DEF(MULTICAST_DECODE_ERROR, 51) \ 72 BRCMF_ENUM_DEF(TRACE, 52) \ 73 BRCMF_ENUM_DEF(IF, 54) \ 74 BRCMF_ENUM_DEF(P2P_DISC_LISTEN_COMPLETE, 55) \ 75 BRCMF_ENUM_DEF(RSSI, 56) \ 76 BRCMF_ENUM_DEF(EXTLOG_MSG, 58) \ 77 BRCMF_ENUM_DEF(ACTION_FRAME, 59) \ 78 BRCMF_ENUM_DEF(ACTION_FRAME_COMPLETE, 60) \ 79 BRCMF_ENUM_DEF(PRE_ASSOC_IND, 61) \ 80 BRCMF_ENUM_DEF(PRE_REASSOC_IND, 62) \ 81 BRCMF_ENUM_DEF(CHANNEL_ADOPTED, 63) \ 82 BRCMF_ENUM_DEF(AP_STARTED, 64) \ 83 BRCMF_ENUM_DEF(DFS_AP_STOP, 65) \ 84 BRCMF_ENUM_DEF(DFS_AP_RESUME, 66) \ 85 BRCMF_ENUM_DEF(ESCAN_RESULT, 69) \ 86 BRCMF_ENUM_DEF(ACTION_FRAME_OFF_CHAN_COMPLETE, 70) \ 87 BRCMF_ENUM_DEF(PROBERESP_MSG, 71) \ 88 BRCMF_ENUM_DEF(P2P_PROBEREQ_MSG, 72) \ 89 BRCMF_ENUM_DEF(DCS_REQUEST, 73) \ 90 BRCMF_ENUM_DEF(FIFO_CREDIT_MAP, 74) \ 91 BRCMF_ENUM_DEF(ACTION_FRAME_RX, 75) \ 92 BRCMF_ENUM_DEF(TDLS_PEER_EVENT, 92) \ 93 BRCMF_ENUM_DEF(BCMC_CREDIT_SUPPORT, 127) 94 95 #define BRCMF_ENUM_DEF(id, val) \ 96 BRCMF_E_##id = (val), 97 98 /* firmware event codes sent by the dongle */ 99 enum brcmf_fweh_event_code { 100 BRCMF_FWEH_EVENT_ENUM_DEFLIST 101 /* this determines event mask length which must match 102 * minimum length check in device firmware so it is 103 * hard-coded here. 104 */ 105 BRCMF_E_LAST = 139 106 }; 107 #undef BRCMF_ENUM_DEF 108 109 #define BRCMF_EVENTING_MASK_LEN DIV_ROUND_UP(BRCMF_E_LAST, 8) 110 111 /* flags field values in struct brcmf_event_msg */ 112 #define BRCMF_EVENT_MSG_LINK 0x01 113 #define BRCMF_EVENT_MSG_FLUSHTXQ 0x02 114 #define BRCMF_EVENT_MSG_GROUP 0x04 115 116 /* status field values in struct brcmf_event_msg */ 117 #define BRCMF_E_STATUS_SUCCESS 0 118 #define BRCMF_E_STATUS_FAIL 1 119 #define BRCMF_E_STATUS_TIMEOUT 2 120 #define BRCMF_E_STATUS_NO_NETWORKS 3 121 #define BRCMF_E_STATUS_ABORT 4 122 #define BRCMF_E_STATUS_NO_ACK 5 123 #define BRCMF_E_STATUS_UNSOLICITED 6 124 #define BRCMF_E_STATUS_ATTEMPT 7 125 #define BRCMF_E_STATUS_PARTIAL 8 126 #define BRCMF_E_STATUS_NEWSCAN 9 127 #define BRCMF_E_STATUS_NEWASSOC 10 128 #define BRCMF_E_STATUS_11HQUIET 11 129 #define BRCMF_E_STATUS_SUPPRESS 12 130 #define BRCMF_E_STATUS_NOCHANS 13 131 #define BRCMF_E_STATUS_CS_ABORT 15 132 #define BRCMF_E_STATUS_ERROR 16 133 134 /* status field values for PSK_SUP event */ 135 #define BRCMF_E_STATUS_FWSUP_WAIT_M1 4 136 #define BRCMF_E_STATUS_FWSUP_PREP_M2 5 137 #define BRCMF_E_STATUS_FWSUP_COMPLETED 6 138 #define BRCMF_E_STATUS_FWSUP_TIMEOUT 7 139 #define BRCMF_E_STATUS_FWSUP_WAIT_M3 8 140 #define BRCMF_E_STATUS_FWSUP_PREP_M4 9 141 #define BRCMF_E_STATUS_FWSUP_WAIT_G1 10 142 #define BRCMF_E_STATUS_FWSUP_PREP_G2 11 143 144 /* reason field values in struct brcmf_event_msg */ 145 #define BRCMF_E_REASON_INITIAL_ASSOC 0 146 #define BRCMF_E_REASON_LOW_RSSI 1 147 #define BRCMF_E_REASON_DEAUTH 2 148 #define BRCMF_E_REASON_DISASSOC 3 149 #define BRCMF_E_REASON_BCNS_LOST 4 150 #define BRCMF_E_REASON_MINTXRATE 9 151 #define BRCMF_E_REASON_TXFAIL 10 152 153 #define BRCMF_E_REASON_LINK_BSSCFG_DIS 4 154 #define BRCMF_E_REASON_FAST_ROAM_FAILED 5 155 #define BRCMF_E_REASON_DIRECTED_ROAM 6 156 #define BRCMF_E_REASON_TSPEC_REJECTED 7 157 #define BRCMF_E_REASON_BETTER_AP 8 158 159 #define BRCMF_E_REASON_TDLS_PEER_DISCOVERED 0 160 #define BRCMF_E_REASON_TDLS_PEER_CONNECTED 1 161 #define BRCMF_E_REASON_TDLS_PEER_DISCONNECTED 2 162 163 /* reason field values for PSK_SUP event */ 164 #define BRCMF_E_REASON_FWSUP_OTHER 0 165 #define BRCMF_E_REASON_FWSUP_DECRYPT_KEY_DATA 1 166 #define BRCMF_E_REASON_FWSUP_BAD_UCAST_WEP128 2 167 #define BRCMF_E_REASON_FWSUP_BAD_UCAST_WEP40 3 168 #define BRCMF_E_REASON_FWSUP_UNSUP_KEY_LEN 4 169 #define BRCMF_E_REASON_FWSUP_PW_KEY_CIPHER 5 170 #define BRCMF_E_REASON_FWSUP_MSG3_TOO_MANY_IE 6 171 #define BRCMF_E_REASON_FWSUP_MSG3_IE_MISMATCH 7 172 #define BRCMF_E_REASON_FWSUP_NO_INSTALL_FLAG 8 173 #define BRCMF_E_REASON_FWSUP_MSG3_NO_GTK 9 174 #define BRCMF_E_REASON_FWSUP_GRP_KEY_CIPHER 10 175 #define BRCMF_E_REASON_FWSUP_GRP_MSG1_NO_GTK 11 176 #define BRCMF_E_REASON_FWSUP_GTK_DECRYPT_FAIL 12 177 #define BRCMF_E_REASON_FWSUP_SEND_FAIL 13 178 #define BRCMF_E_REASON_FWSUP_DEAUTH 14 179 #define BRCMF_E_REASON_FWSUP_WPA_PSK_TMO 15 180 #define BRCMF_E_REASON_FWSUP_WPA_PSK_M1_TMO 16 181 #define BRCMF_E_REASON_FWSUP_WPA_PSK_M3_TMO 17 182 183 /* action field values for brcmf_ifevent */ 184 #define BRCMF_E_IF_ADD 1 185 #define BRCMF_E_IF_DEL 2 186 #define BRCMF_E_IF_CHANGE 3 187 188 /* flag field values for brcmf_ifevent */ 189 #define BRCMF_E_IF_FLAG_NOIF 1 190 191 /* role field values for brcmf_ifevent */ 192 #define BRCMF_E_IF_ROLE_STA 0 193 #define BRCMF_E_IF_ROLE_AP 1 194 #define BRCMF_E_IF_ROLE_WDS 2 195 #define BRCMF_E_IF_ROLE_P2P_GO 3 196 #define BRCMF_E_IF_ROLE_P2P_CLIENT 4 197 198 /** 199 * definitions for event packet validation. 200 */ 201 #define BRCM_OUI "\x00\x10\x18" 202 #define BCMILCP_BCM_SUBTYPE_EVENT 1 203 #define BCMILCP_SUBTYPE_VENDOR_LONG 32769 204 205 /** 206 * struct brcm_ethhdr - broadcom specific ether header. 207 * 208 * @subtype: subtype for this packet. 209 * @length: TODO: length of appended data. 210 * @version: version indication. 211 * @oui: OUI of this packet. 212 * @usr_subtype: subtype for this OUI. 213 */ 214 struct brcm_ethhdr { 215 __be16 subtype; 216 __be16 length; 217 u8 version; 218 u8 oui[3]; 219 __be16 usr_subtype; 220 } __packed; 221 222 struct brcmf_event_msg_be { 223 __be16 version; 224 __be16 flags; 225 __be32 event_type; 226 __be32 status; 227 __be32 reason; 228 __be32 auth_type; 229 __be32 datalen; 230 u8 addr[ETH_ALEN]; 231 char ifname[IFNAMSIZ]; 232 u8 ifidx; 233 u8 bsscfgidx; 234 } __packed; 235 236 /** 237 * struct brcmf_event - contents of broadcom event packet. 238 * 239 * @eth: standard ether header. 240 * @hdr: broadcom specific ether header. 241 * @msg: common part of the actual event message. 242 */ 243 struct brcmf_event { 244 struct ethhdr eth; 245 struct brcm_ethhdr hdr; 246 struct brcmf_event_msg_be msg; 247 } __packed; 248 249 /** 250 * struct brcmf_event_msg - firmware event message. 251 * 252 * @version: version information. 253 * @flags: event flags. 254 * @event_code: firmware event code. 255 * @status: status information. 256 * @reason: reason code. 257 * @auth_type: authentication type. 258 * @datalen: length of event data buffer. 259 * @addr: ether address. 260 * @ifname: interface name. 261 * @ifidx: interface index. 262 * @bsscfgidx: bsscfg index. 263 */ 264 struct brcmf_event_msg { 265 u16 version; 266 u16 flags; 267 u32 event_code; 268 u32 status; 269 u32 reason; 270 s32 auth_type; 271 u32 datalen; 272 u8 addr[ETH_ALEN]; 273 char ifname[IFNAMSIZ]; 274 u8 ifidx; 275 u8 bsscfgidx; 276 }; 277 278 struct brcmf_if_event { 279 u8 ifidx; 280 u8 action; 281 u8 flags; 282 u8 bsscfgidx; 283 u8 role; 284 }; 285 286 typedef int (*brcmf_fweh_handler_t)(struct brcmf_if *ifp, 287 const struct brcmf_event_msg *evtmsg, 288 void *data); 289 290 /** 291 * struct brcmf_fweh_info - firmware event handling information. 292 * 293 * @p2pdev_setup_ongoing: P2P device creation in progress. 294 * @event_work: event worker. 295 * @evt_q_lock: lock for event queue protection. 296 * @event_q: event queue. 297 * @evt_handler: registered event handlers. 298 */ 299 struct brcmf_fweh_info { 300 bool p2pdev_setup_ongoing; 301 struct work_struct event_work; 302 spinlock_t evt_q_lock; 303 struct list_head event_q; 304 int (*evt_handler[BRCMF_E_LAST])(struct brcmf_if *ifp, 305 const struct brcmf_event_msg *evtmsg, 306 void *data); 307 }; 308 309 const char *brcmf_fweh_event_name(enum brcmf_fweh_event_code code); 310 311 void brcmf_fweh_attach(struct brcmf_pub *drvr); 312 void brcmf_fweh_detach(struct brcmf_pub *drvr); 313 int brcmf_fweh_register(struct brcmf_pub *drvr, enum brcmf_fweh_event_code code, 314 int (*handler)(struct brcmf_if *ifp, 315 const struct brcmf_event_msg *evtmsg, 316 void *data)); 317 void brcmf_fweh_unregister(struct brcmf_pub *drvr, 318 enum brcmf_fweh_event_code code); 319 int brcmf_fweh_activate_events(struct brcmf_if *ifp); 320 void brcmf_fweh_process_event(struct brcmf_pub *drvr, 321 struct brcmf_event *event_packet, 322 u32 packet_len, gfp_t gfp); 323 void brcmf_fweh_p2pdev_setup(struct brcmf_if *ifp, bool ongoing); 324 325 static inline void brcmf_fweh_process_skb(struct brcmf_pub *drvr, 326 struct sk_buff *skb, u16 stype, 327 gfp_t gfp) 328 { 329 struct brcmf_event *event_packet; 330 u16 subtype, usr_stype; 331 332 /* only process events when protocol matches */ 333 if (skb->protocol != cpu_to_be16(ETH_P_LINK_CTL)) 334 return; 335 336 if ((skb->len + ETH_HLEN) < sizeof(*event_packet)) 337 return; 338 339 event_packet = (struct brcmf_event *)skb_mac_header(skb); 340 341 /* check subtype if needed */ 342 if (unlikely(stype)) { 343 subtype = get_unaligned_be16(&event_packet->hdr.subtype); 344 if (subtype != stype) 345 return; 346 } 347 348 /* check for BRCM oui match */ 349 if (memcmp(BRCM_OUI, &event_packet->hdr.oui[0], 350 sizeof(event_packet->hdr.oui))) 351 return; 352 353 /* final match on usr_subtype */ 354 usr_stype = get_unaligned_be16(&event_packet->hdr.usr_subtype); 355 if (usr_stype != BCMILCP_BCM_SUBTYPE_EVENT) 356 return; 357 358 brcmf_fweh_process_event(drvr, event_packet, skb->len + ETH_HLEN, gfp); 359 } 360 361 #endif /* FWEH_H_ */ 362