1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 * Copyright (c) 2012, Joyent, Inc. All rights reserved. 25 * Copyright 2026 Oxide Computer Company 26 */ 27 /* 28 * Copyright 2018 Joyent, Inc. 29 */ 30 31 #ifndef _SYS_MAC_CLIENT_IMPL_H 32 #define _SYS_MAC_CLIENT_IMPL_H 33 34 #include <sys/modhash.h> 35 #include <sys/mac_client.h> 36 #include <sys/mac_provider.h> 37 #include <sys/mac.h> 38 #include <sys/mac_impl.h> 39 #include <sys/mac_stat.h> 40 #include <net/if.h> 41 #include <sys/mac_flow_impl.h> 42 43 #ifdef __cplusplus 44 extern "C" { 45 #endif 46 47 extern kmem_cache_t *mac_client_impl_cache; 48 extern kmem_cache_t *mac_unicast_impl_cache; 49 extern kmem_cache_t *mac_promisc_impl_cache; 50 51 /* 52 * Need a list to chain all VIDs assigned to a client. Normally, one 53 * MAC client only has one VID. But vsw might need multiple VIDs. 54 */ 55 typedef struct mac_unicast_impl_s { /* Protected by */ 56 struct mac_unicast_impl_s *mui_next; /* SL */ 57 mac_address_t *mui_map; /* SL */ 58 uint16_t mui_vid; /* SL */ 59 } mac_unicast_impl_t; 60 61 #define MAC_CLIENT_FLAGS_PRIMARY 0x0001 62 #define MAC_CLIENT_FLAGS_VNIC_PRIMARY 0x0002 63 #define MAC_CLIENT_FLAGS_MULTI_PRIMARY 0x0004 64 #define MAC_CLIENT_FLAGS_PASSIVE_PRIMARY 0x0008 65 66 /* 67 * One of these is instantiated per MAC client promiscuous callback. 68 * 69 * Each element of this structure belongs to two linked list. One 70 * for the mac_client_impl_t (mci_promisc_list) which created allocated 71 * the callback, the other for the mac_impl_t (mi_promisc_list) corresponding 72 * to the MAC client. 73 * The former allows us to do bookkeeping, the latter allows us 74 * to more efficiently dispatch packets to the promiscuous callbacks. 75 */ 76 typedef struct mac_promisc_impl_s { /* Protected by */ 77 mac_cb_t mpi_mci_link; /* mi_promisc_lock */ 78 mac_cb_t mpi_mi_link; /* mi_promisc_lock */ 79 mac_client_promisc_type_t mpi_type; /* WO */ 80 mac_rx_t mpi_fn; /* WO */ 81 void *mpi_arg; /* WO */ 82 struct mac_client_impl_s *mpi_mcip; /* WO */ 83 boolean_t mpi_no_tx_loop; /* WO */ 84 boolean_t mpi_no_phys; /* WO */ 85 boolean_t mpi_strip_vlan_tag; /* WO */ 86 boolean_t mpi_no_copy; /* WO */ 87 boolean_t mpi_rx_only; /* WO */ 88 boolean_t mpi_tx_only; /* WO */ 89 } mac_promisc_impl_t; 90 91 typedef union mac_tx_percpu_s { 92 struct { 93 kmutex_t _pcpu_tx_lock; 94 uint_t _pcpu_tx_refcnt; 95 } pcpu_lr; 96 uchar_t pcpu_pad[64]; 97 } mac_tx_percpu_t; 98 99 #define pcpu_tx_lock pcpu_lr._pcpu_tx_lock 100 #define pcpu_tx_refcnt pcpu_lr._pcpu_tx_refcnt 101 102 /* 103 * One of these is instantiated for each MAC client. 104 */ 105 struct mac_client_impl_s { /* Protected by */ 106 struct mac_client_impl_s *mci_client_next; /* mi_rw_lock */ 107 char mci_name[MAXNAMELEN]; /* mi_rw_lock */ 108 /* 109 * This flow entry will contain all the internal constructs 110 * such as SRS etc. for this MAC client. The MAC client may 111 * have more than one flow corresponding to each upper client 112 * sharing this mac_client_impl_t. 113 */ 114 flow_entry_t *mci_flent; /* mi_rw_lock */ 115 struct mac_impl_s *mci_mip; /* WO */ 116 /* 117 * If this is a client that has a pass thru MAC (e.g. a VNIC), 118 * then we also keep the handle for the client's upper MAC. 119 */ 120 struct mac_impl_s *mci_upper_mip; /* WO */ 121 122 uint32_t mci_state_flags; /* WO */ 123 mac_rx_t mci_rx_fn; /* Rx Quiescence */ 124 void *mci_rx_arg; /* Rx Quiescence */ 125 mac_direct_rxs_t mci_direct_rx; /* SL */ 126 mac_rx_t mci_rx_p_fn; /* Rx Quiescence */ 127 void *mci_rx_p_arg; /* Rx Quiescence */ 128 void *mci_p_unicast_list; 129 130 mac_cb_t *mci_promisc_list; /* mi_promisc_lock */ 131 132 mac_address_t *mci_unicast; 133 uint32_t mci_flags; /* SL */ 134 krwlock_t mci_rw_lock; 135 mac_unicast_impl_t *mci_unicast_list; /* mci_rw_lock */ 136 137 /* 138 * The mac_client_impl_t may be shared by multiple clients, i.e 139 * multiple VLANs sharing the same MAC client. In this case the 140 * address/vid tuples differ and are each associated with their 141 * own flow entry, but the rest underlying components SRS, etc, 142 * are common. 143 * 144 * This is only needed to support sun4v vsw. There are several 145 * places in MAC we could simplify the code if we removed 146 * sun4v support. 147 */ 148 flow_entry_t *mci_flent_list; /* mci_rw_lock */ 149 uint_t mci_nflents; /* mci_rw_lock */ 150 uint_t mci_nvids; /* mci_rw_lock */ 151 volatile uint32_t mci_vidcache; /* VID cache */ 152 153 /* 154 * Resource Management Callback Functions 155 * 156 * A mac client may have both an IPv4 and IPv6 ill_t active on it. In 157 * order to avoid stomping on each other we give each their own resource 158 * callbacks. At this time resources are used solely by TCP softrings 159 * for the purpose of IP ring/squeue creation and polling. Currently the 160 * callbacks are identical across protocol types, save the mrc_arg, 161 * which is used to pass the ill_t up to IP. 162 */ 163 mac_resource_cb_t mci_rcb4; /* SL */ 164 mac_resource_cb_t mci_rcb6; /* SL */ 165 166 /* Tx notify callback */ 167 kmutex_t mci_tx_cb_lock; 168 mac_cb_info_t mci_tx_notify_cb_info; /* cb list info */ 169 mac_cb_t *mci_tx_notify_cb_list; /* The cb list */ 170 uintptr_t mci_tx_notify_id; 171 172 /* per MAC client stats */ /* None */ 173 mac_misc_stats_t mci_misc_stat; 174 175 flow_tab_t *mci_subflow_tab; /* Rx quiescence */ 176 177 /* 178 * Priority range for this MAC client. This the range 179 * corresponding to the priority configured (nr_flow_priority). 180 */ 181 pri_t mci_min_pri; 182 pri_t mci_max_pri; 183 184 /* 185 * Hybrid I/O related definitions. 186 */ 187 mac_share_handle_t mci_share; 188 189 /* for multicast support */ 190 struct mac_mcast_addrs_s *mci_mcast_addrs; /* mi_rw_lock */ 191 192 /* 193 * Mac protection related fields 194 */ 195 kmutex_t mci_protect_lock; 196 uint32_t mci_protect_flags; /* SL */ 197 in6_addr_t mci_v6_mac_token; /* SL */ 198 in6_addr_t mci_v6_local_addr; /* SL */ 199 avl_tree_t mci_v4_pending_txn; /* mci_protect_lock */ 200 avl_tree_t mci_v4_completed_txn; /* mci_protect_lock */ 201 avl_tree_t mci_v4_dyn_ip; /* mci_protect_lock */ 202 avl_tree_t mci_v6_pending_txn; /* mci_protect_lock */ 203 avl_tree_t mci_v6_cid; /* mci_protect_lock */ 204 avl_tree_t mci_v6_dyn_ip; /* mci_protect_lock */ 205 avl_tree_t mci_v6_slaac_ip; /* mci_protect_lock */ 206 timeout_id_t mci_txn_cleanup_tid; /* mci_protect_lock */ 207 208 /* 209 * Protected by mci_tx_pcpu[0].pcpu_tx_lock 210 */ 211 uint_t mci_tx_flag; 212 kcondvar_t mci_tx_cv; 213 214 /* Must be last in the structure for dynamic sizing */ 215 mac_tx_percpu_t mci_tx_pcpu[1]; /* SL */ 216 }; 217 218 #define MAC_CLIENT_IMPL_SIZE \ 219 (sizeof (mac_client_impl_t) + \ 220 (mac_tx_percpu_cnt * sizeof (mac_tx_percpu_t))) 221 222 extern int mac_tx_percpu_cnt; 223 224 #define MCIP_TX_SRS(mcip) \ 225 ((mcip)->mci_flent == NULL ? NULL : (mcip)->mci_flent->fe_tx_srs) 226 227 /* Defensive coding, non-null mcip_flent could be an assert */ 228 229 #define MCIP_DATAPATH_SETUP(mcip) \ 230 ((mcip)->mci_flent == NULL ? B_FALSE : \ 231 !((mcip)->mci_flent->fe_flags & FE_MC_NO_DATAPATH)) 232 233 #define MCIP_RESOURCE_PROPS(mcip) \ 234 ((mcip)->mci_flent == NULL ? NULL : \ 235 &(mcip)->mci_flent->fe_resource_props) 236 237 #define MCIP_EFFECTIVE_PROPS(mcip) \ 238 (mcip->mci_flent == NULL ? NULL : \ 239 &(mcip)->mci_flent->fe_effective_props) 240 241 #define MCIP_RESOURCE_PROPS_MASK(mcip) \ 242 ((mcip)->mci_flent == NULL ? 0 : \ 243 (mcip)->mci_flent->fe_resource_props.mrp_mask) 244 245 #define MCIP_RESOURCE_PROPS_MAXBW(mcip) \ 246 ((mcip)->mci_flent == NULL ? 0 : \ 247 (mcip)->mci_flent->fe_resource_props.mrp_maxbw) 248 249 #define MCIP_RESOURCE_PROPS_PRIORITY(mcip) \ 250 ((mcip)->mci_flent == NULL ? 0 : \ 251 (mcip)->mci_flent->fe_resource_props.mrp_priority) 252 253 #define MCIP_RESOURCE_PROPS_CPUS(mcip) \ 254 ((mcip)->mci_flent == NULL ? 0 : \ 255 &(mcip)->mci_flent->fe_resource_props.mrp_cpus) 256 257 #define MCIP_RESOURCE_PROPS_NCPUS(mcip) \ 258 ((mcip)->mci_flent == NULL ? 0 : \ 259 (mcip)->mci_flent->fe_resource_props.mrp_ncpus) 260 261 #define MCIP_RESOURCE_PROPS_CPU(mcip) \ 262 ((mcip)->mci_flent == NULL ? 0 : \ 263 (mcip)->mci_flent->fe_resource_props.mrp_ncpu) 264 265 /* 266 * We validate the VLAN id of the packet w.r.t the client's vid, 267 * if required (i.e. !MCIS_DISABLE_TX_VID_CHECK). DLS clients 268 * will have MCIS_DISABLE_TX_VID_CHECK set. 269 * (In the case of aggr when we get back packets, due to 270 * the underlying driver being flow controlled, we won't 271 * drop the packet even if it is VLAN tagged as we 272 * don't set MCIS_DISABLE_TX_VID_CHECK for an aggr.) 273 */ 274 #define MAC_VID_CHECK_NEEDED(mcip) \ 275 (((mcip)->mci_state_flags & MCIS_DISABLE_TX_VID_CHECK) == 0 && \ 276 (mcip)->mci_mip->mi_info.mi_nativemedia == DL_ETHER) 277 278 #define MAC_VID_CHECK(mcip, mp, err) { \ 279 if (ntohs(((struct ether_header *)(mp)->b_rptr)->ether_type) == \ 280 ETHERTYPE_VLAN) { \ 281 /* \ 282 * err is set to EINVAL (so the caller can take the \ 283 * appropriate action. e.g. freemsg()) for two cases: \ 284 * -client is not responsible for filling in the vid. \ 285 * -client is responsible for filling in the vid, but \ 286 * the vid doesn't match the vid of the MAC client. \ 287 */ \ 288 (err) = EINVAL; \ 289 if (((mcip)->mci_state_flags & MCIS_TAG_DISABLE) != 0) {\ 290 struct ether_vlan_header *evhp; \ 291 uint16_t vlanid; \ 292 \ 293 evhp = (struct ether_vlan_header *)(mp)->b_rptr;\ 294 vlanid = VLAN_ID(ntohs(evhp->ether_tci)); \ 295 if (mac_client_check_flow_vid((mcip), vlanid)) \ 296 (err) = 0; \ 297 } \ 298 } \ 299 } 300 301 /* 302 * To allow the hot path to not grab any additional locks, we keep a single 303 * entry VLAN ID cache that caches whether or not a given VID belongs to a 304 * MAC client. 305 */ 306 #define MCIP_VIDCACHE_VALIDSHIFT 31 307 #define MCIP_VIDCACHE_VIDSHIFT 1 308 #define MCIP_VIDCACHE_VIDMASK (UINT16_MAX << MCIP_VIDCACHE_VIDSHIFT) 309 #define MCIP_VIDCACHE_BOOLSHIFT 0 310 311 #define MCIP_VIDCACHE_INVALID 0 312 313 #define MCIP_VIDCACHE_CACHE(vid, bool) \ 314 ((1U << MCIP_VIDCACHE_VALIDSHIFT) | \ 315 ((vid) << MCIP_VIDCACHE_VIDSHIFT) | \ 316 ((bool) ? (1U << MCIP_VIDCACHE_BOOLSHIFT) : 0)) 317 318 #define MCIP_VIDCACHE_ISVALID(v) ((v) & (1U << MCIP_VIDCACHE_VALIDSHIFT)) 319 #define MCIP_VIDCACHE_VID(v) \ 320 (((v) & MCIP_VIDCACHE_VIDMASK) >> MCIP_VIDCACHE_VIDSHIFT) 321 #define MCIP_VIDCACHE_BOOL(v) ((v) & (1U << MCIP_VIDCACHE_BOOLSHIFT)) 322 323 #define MAC_TAG_NEEDED(mcip) \ 324 (((mcip)->mci_state_flags & MCIS_TAG_DISABLE) == 0 && \ 325 (mcip)->mci_nvids == 1) \ 326 327 /* 328 * MAC Client Implementation State (mci_state_flags) 329 * 330 * MCIS_IS_VNIC 331 * 332 * The client is a VNIC. 333 * 334 * MCIS_EXCLUSIVE 335 * 336 * The client has exclusive control over the MAC, such that it is 337 * the sole client of the MAC. 338 * 339 * MCIS_TAG_DISABLE 340 * 341 * MAC will not add VLAN tags to outgoing traffic. If this flag 342 * is set it is up to the client to add the correct VLAN tag. 343 * 344 * MCIS_STRIP_DISABLE 345 * 346 * MAC will not strip the VLAN tags on incoming traffic before 347 * passing it to mci_rx_fn. This only applies to non-bypass 348 * traffic. 349 * 350 * MCIS_IS_AGGR_PORT 351 * 352 * The client represents a port on an aggr. 353 * 354 * MCIS_CLIENT_POLL_CAPABLE 355 * 356 * The client is capable of polling the Rx TCP/UDP softrings. 357 * 358 * MCIS_DESC_LOGGED 359 * 360 * This flag is set when the client's link info has been logged 361 * by the mac_log_linkinfo() timer. This ensures that the 362 * client's link info is only logged once. 363 * 364 * MCIS_SHARE_BOUND 365 * 366 * This client has an HIO share bound to it. 367 * 368 * MCIS_DISABLE_TX_VID_CHECK 369 * 370 * MAC will not check the VID of the client's Tx traffic. 371 * 372 * MCIS_USE_DATALINK_NAME 373 * 374 * The client is using the same name as its underlying MAC. This 375 * happens when dlmgmtd is unreachable during client creation. 376 * 377 * MCIS_UNICAST_HW 378 * 379 * The client requires MAC address hardware classification. This 380 * is only used by sun4v vsw. 381 * 382 * MCIS_IS_AGGR_CLIENT 383 * 384 * The client sits atop an aggr. 385 * 386 * MCIS_RX_BYPASS_DISABLE 387 * 388 * Do not allow the client to enable DLS bypass. 389 * 390 * MCIS_NO_UNICAST_ADDR 391 * 392 * This client has no MAC unicast addresss associated with it. 393 * 394 */ 395 /* MCI state flags */ 396 #define MCIS_IS_VNIC 0x0001 397 #define MCIS_EXCLUSIVE 0x0002 398 #define MCIS_TAG_DISABLE 0x0004 399 #define MCIS_STRIP_DISABLE 0x0008 400 #define MCIS_IS_AGGR_PORT 0x0010 401 #define MCIS_CLIENT_POLL_CAPABLE 0x0020 402 #define MCIS_DESC_LOGGED 0x0040 403 #define MCIS_SHARE_BOUND 0x0080 404 #define MCIS_DISABLE_TX_VID_CHECK 0x0100 405 #define MCIS_USE_DATALINK_NAME 0x0200 406 #define MCIS_UNICAST_HW 0x0400 407 #define MCIS_IS_AGGR_CLIENT 0x0800 408 #define MCIS_RX_BYPASS_DISABLE 0x1000 409 #define MCIS_NO_UNICAST_ADDR 0x2000 410 411 /* Mac protection flags */ 412 #define MPT_FLAG_V6_LOCAL_ADDR_SET 0x0001 413 #define MPT_FLAG_PROMISC_FILTERED 0x0002 414 415 /* in mac_client.c */ 416 extern void mac_promisc_client_dispatch(mac_client_impl_t *, mblk_t *); 417 extern void mac_client_init(void); 418 extern void mac_client_fini(void); 419 extern void mac_promisc_dispatch(mac_impl_t *, mblk_t *, mac_client_impl_t *, 420 boolean_t); 421 422 extern int mac_validate_props(mac_impl_t *, mac_resource_props_t *); 423 424 extern mac_client_impl_t *mac_vnic_lower(mac_impl_t *); 425 extern mac_client_impl_t *mac_primary_client_handle(mac_impl_t *); 426 extern uint16_t i_mac_flow_vid(flow_entry_t *); 427 extern boolean_t i_mac_capab_get(mac_handle_t, mac_capab_t, void *); 428 429 extern void mac_unicast_update_clients(mac_impl_t *, mac_address_t *); 430 extern void mac_update_resources(mac_resource_props_t *, 431 mac_resource_props_t *, boolean_t); 432 433 boolean_t mac_client_check_flow_vid(mac_client_impl_t *, uint16_t); 434 435 extern boolean_t mac_is_primary_client(mac_client_impl_t *); 436 437 extern int mac_client_set_rings_prop(mac_client_impl_t *, 438 mac_resource_props_t *, mac_resource_props_t *); 439 extern void mac_set_prim_vlan_rings(mac_impl_t *, mac_resource_props_t *); 440 441 #ifdef __cplusplus 442 } 443 #endif 444 445 #endif /* _SYS_MAC_CLIENT_IMPL_H */ 446