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 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _VNET_GEN_H 28 #define _VNET_GEN_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 #define VGEN_SUCCESS (0) /* successful return */ 37 #define VGEN_FAILURE (-1) /* unsuccessful return */ 38 39 #define VGEN_NUM_VER 1 /* max # of vgen versions */ 40 41 #define VGEN_LOCAL 1 /* local ldc end-point */ 42 #define VGEN_PEER 2 /* peer ldc end-point */ 43 44 /* vgen_t flags */ 45 #define VGEN_STOPPED 0x0 46 #define VGEN_STARTED 0x1 47 48 #define KMEM_FREE(_p) kmem_free((_p), sizeof (*(_p))) 49 50 #define VGEN_INIT_MCTAB_SIZE 16 /* initial size of multicast table */ 51 52 #define READ_ENTER(x) rw_enter(x, RW_READER) 53 #define WRITE_ENTER(x) rw_enter(x, RW_WRITER) 54 #define RW_EXIT(x) rw_exit(x) 55 56 /* channel flags */ 57 #define CHANNEL_ATTACHED 0x1 58 #define CHANNEL_STARTED 0x2 59 60 /* transmit return values */ 61 #define VGEN_TX_SUCCESS 0 /* transmit success */ 62 #define VGEN_TX_FAILURE 1 /* transmit failure */ 63 #define VGEN_TX_NORESOURCES 2 /* out of tbufs/txds */ 64 65 /* private descriptor flags */ 66 #define VGEN_PRIV_DESC_FREE 0x0 /* desc is available */ 67 #define VGEN_PRIV_DESC_BUSY 0x1 /* desc in use */ 68 69 #define LDC_TO_VNET(ldcp) ((ldcp)->portp->vgenp->vnetp) 70 #define LDC_TO_VGEN(ldcp) ((ldcp)->portp->vgenp) 71 72 /* receive thread flags */ 73 #define VGEN_WTHR_RUNNING 0x01 /* worker thread running */ 74 #define VGEN_WTHR_DATARCVD 0x02 /* data received */ 75 #define VGEN_WTHR_STOP 0x04 /* stop worker thread request */ 76 77 #define VGEN_LDC_UP_DELAY 100 /* usec delay between ldc_up retries */ 78 79 #define VGEN_NUM_VMPOOLS 3 /* number of vio mblk pools */ 80 81 #define VGEN_DBLK_SZ_128 128 /* data buffer size 128 bytes */ 82 #define VGEN_DBLK_SZ_256 256 /* data buffer size 256 bytes */ 83 #define VGEN_DBLK_SZ_2048 2048 /* data buffer size 2K bytes */ 84 #define VGEN_NRBUFS 512 /* number of receive bufs */ 85 86 #define VGEN_TXDBLK_SZ 2048 /* Tx data buffer size */ 87 88 /* get the address of next tbuf */ 89 #define NEXTTBUF(ldcp, tbufp) (((tbufp) + 1) == (ldcp)->tbufendp \ 90 ? (ldcp)->tbufp : ((tbufp) + 1)) 91 92 /* increment recv index */ 93 #define INCR_RXI(i, ldcp) \ 94 ((i) = (((i) + 1) & ((ldcp)->num_rxds - 1))) 95 96 /* decrement recv index */ 97 #define DECR_RXI(i, ldcp) \ 98 ((i) = (((i) - 1) & ((ldcp)->num_rxds - 1))) 99 100 /* increment tx index */ 101 #define INCR_TXI(i, ldcp) \ 102 ((i) = (((i) + 1) & ((ldcp)->num_txds - 1))) 103 104 /* decrement tx index */ 105 #define DECR_TXI(i, ldcp) \ 106 ((i) = (((i) - 1) & ((ldcp)->num_txds - 1))) 107 108 /* bounds check rx index */ 109 #define CHECK_RXI(i, ldcp) \ 110 (((i) >= 0) && ((i) < (ldcp)->num_rxds)) 111 112 /* bounds check tx index */ 113 #define CHECK_TXI(i, ldcp) \ 114 (((i) >= 0) && ((i) < (ldcp)->num_txds)) 115 116 /* private descriptor */ 117 typedef struct vgen_priv_desc { 118 uint64_t flags; /* flag bits */ 119 vnet_public_desc_t *descp; /* associated public desc */ 120 ldc_mem_handle_t memhandle; /* mem handle for data */ 121 caddr_t datap; /* prealloc'd tx data buffer */ 122 uint64_t datalen; /* total actual datalen */ 123 uint64_t ncookies; /* num ldc_mem_cookies */ 124 ldc_mem_cookie_t memcookie[MAX_COOKIES]; /* data cookies */ 125 } vgen_private_desc_t; 126 127 /* 128 * Handshake parameters (per vio_mailbox.h) of each ldc end point, used 129 * during handshake negotiation. 130 */ 131 typedef struct vgen_handshake_params { 132 /* version specific params */ 133 uint32_t ver_major:16, 134 ver_minor:16; /* major, minor version */ 135 uint8_t dev_class; /* device class */ 136 137 /* attributes specific params */ 138 uint64_t mtu; /* max transfer unit size */ 139 uint64_t addr; /* address of the device */ 140 uint8_t addr_type; /* type of address */ 141 uint8_t xfer_mode; /* SHM or PKT */ 142 uint16_t ack_freq; /* dring data ack freq */ 143 144 /* descriptor ring params */ 145 uint32_t num_desc; /* # of descriptors in ring */ 146 uint32_t desc_size; /* size of descriptor */ 147 ldc_mem_cookie_t dring_cookie; /* desc ring cookie */ 148 uint32_t num_dcookies; /* # of dring cookies */ 149 uint64_t dring_ident; /* ident=0 for INFO msg */ 150 boolean_t dring_ready; /* dring ready flag */ 151 } vgen_hparams_t; 152 153 /* version info */ 154 typedef struct vgen_ver { 155 uint32_t ver_major:16, 156 ver_minor:16; 157 } vgen_ver_t; 158 159 typedef struct vgen_stats { 160 161 /* Link Input/Output stats */ 162 uint64_t ipackets; /* # rx packets */ 163 uint64_t ierrors; /* # rx error */ 164 uint64_t opackets; /* # tx packets */ 165 uint64_t oerrors; /* # tx error */ 166 167 /* MIB II variables */ 168 uint64_t rbytes; /* # bytes received */ 169 uint64_t obytes; /* # bytes transmitted */ 170 uint32_t multircv; /* # multicast packets received */ 171 uint32_t multixmt; /* # multicast packets for xmit */ 172 uint32_t brdcstrcv; /* # broadcast packets received */ 173 uint32_t brdcstxmt; /* # broadcast packets for xmit */ 174 uint32_t norcvbuf; /* # rcv packets discarded */ 175 uint32_t noxmtbuf; /* # xmit packets discarded */ 176 177 /* Tx Statistics */ 178 uint32_t tx_no_desc; /* # out of transmit descriptors */ 179 180 /* Rx Statistics */ 181 uint32_t rx_allocb_fail; /* # rx buf allocb() failures */ 182 uint32_t rx_vio_allocb_fail; /* # vio_allocb() failures */ 183 uint32_t rx_lost_pkts; /* # rx lost packets */ 184 185 /* Callback statistics */ 186 uint32_t callbacks; /* # callbacks */ 187 uint32_t dring_data_acks; /* # dring data acks recvd */ 188 uint32_t dring_stopped_acks; /* # dring stopped acks recvd */ 189 uint32_t dring_data_msgs; /* # dring data msgs sent */ 190 191 } vgen_stats_t; 192 193 typedef struct vgen_kstats { 194 /* 195 * Link Input/Output stats 196 */ 197 kstat_named_t ipackets; 198 kstat_named_t ipackets64; 199 kstat_named_t ierrors; 200 kstat_named_t opackets; 201 kstat_named_t opackets64; 202 kstat_named_t oerrors; 203 204 /* 205 * required by kstat for MIB II objects(RFC 1213) 206 */ 207 kstat_named_t rbytes; /* MIB - ifInOctets */ 208 kstat_named_t rbytes64; 209 kstat_named_t obytes; /* MIB - ifOutOctets */ 210 kstat_named_t obytes64; 211 kstat_named_t multircv; /* MIB - ifInNUcastPkts */ 212 kstat_named_t multixmt; /* MIB - ifOutNUcastPkts */ 213 kstat_named_t brdcstrcv; /* MIB - ifInNUcastPkts */ 214 kstat_named_t brdcstxmt; /* MIB - ifOutNUcastPkts */ 215 kstat_named_t norcvbuf; /* MIB - ifInDiscards */ 216 kstat_named_t noxmtbuf; /* MIB - ifOutDiscards */ 217 218 /* Tx Statistics */ 219 kstat_named_t tx_no_desc; /* # out of transmit descriptors */ 220 221 /* Rx Statistics */ 222 kstat_named_t rx_allocb_fail; /* # rx buf allocb failures */ 223 kstat_named_t rx_vio_allocb_fail; /* # vio_allocb() failures */ 224 kstat_named_t rx_lost_pkts; /* # rx lost packets */ 225 226 /* Callback statistics */ 227 kstat_named_t callbacks; /* # callbacks */ 228 kstat_named_t dring_data_acks; /* # dring data acks recvd */ 229 kstat_named_t dring_stopped_acks; /* # dring stopped acks recvd */ 230 kstat_named_t dring_data_msgs; /* # dring data msgs sent */ 231 232 } vgen_kstats_t; 233 234 /* Channel information associated with a vgen-port */ 235 typedef struct vgen_ldc { 236 237 struct vgen_ldc *nextp; /* next ldc in the list */ 238 struct vgen_port *portp; /* associated port */ 239 240 /* 241 * Locks: 242 * locking hierarchy when more than one lock is held concurrently: 243 * cblock > rxlock > txlock > tclock. 244 */ 245 kmutex_t cblock; /* sync callback processing */ 246 kmutex_t txlock; /* protect txd alloc */ 247 kmutex_t tclock; /* tx reclaim lock */ 248 kmutex_t wrlock; /* sync transmits */ 249 kmutex_t rxlock; /* sync reception */ 250 251 /* channel info from ldc layer */ 252 uint64_t ldc_id; /* channel number */ 253 uint64_t ldc_handle; /* channel handle */ 254 ldc_status_t ldc_status; /* channel status */ 255 256 /* handshake info */ 257 vgen_ver_t vgen_versions[VGEN_NUM_VER]; /* versions */ 258 int hphase; /* handshake phase */ 259 int hstate; /* handshake state bits */ 260 uint32_t local_sid; /* local session id */ 261 uint32_t peer_sid; /* session id of peer */ 262 vgen_hparams_t local_hparams; /* local handshake params */ 263 vgen_hparams_t peer_hparams; /* peer's handshake params */ 264 timeout_id_t htid; /* handshake wd timeout id */ 265 timeout_id_t cancel_htid; /* cancel handshake watchdog */ 266 267 /* transmit and receive descriptor ring info */ 268 ldc_dring_handle_t tx_dhandle; /* tx descriptor ring handle */ 269 ldc_mem_cookie_t tx_dcookie; /* tx descriptor ring cookie */ 270 ldc_dring_handle_t rx_dhandle; /* mapped rx dhandle */ 271 ldc_mem_cookie_t rx_dcookie; /* rx descriptor ring cookie */ 272 vnet_public_desc_t *txdp; /* transmit frame descriptors */ 273 vnet_public_desc_t *txdendp; /* txd ring end */ 274 vgen_private_desc_t *tbufp; /* associated tx resources */ 275 vgen_private_desc_t *tbufendp; /* tbuf ring end */ 276 vgen_private_desc_t *next_tbufp; /* next free tbuf */ 277 vgen_private_desc_t *cur_tbufp; /* next reclaim tbuf */ 278 uint64_t next_txseq; /* next tx sequence number */ 279 uint32_t num_txdcookies; /* # of tx dring cookies */ 280 uint32_t num_rxdcookies; /* # of rx dring cookies */ 281 uint32_t next_txi; /* next tx descriptor index */ 282 uint32_t num_txds; /* number of tx descriptors */ 283 clock_t reclaim_lbolt; /* time of last tx reclaim */ 284 timeout_id_t wd_tid; /* tx watchdog timeout id */ 285 vnet_public_desc_t *rxdp; /* receive frame descriptors */ 286 uint64_t next_rxseq; /* next expected recv seqnum */ 287 uint32_t next_rxi; /* next expected recv index */ 288 uint32_t num_rxds; /* number of rx descriptors */ 289 caddr_t tx_datap; /* prealloc'd tx data area */ 290 vio_multi_pool_t vmp; /* rx mblk pools */ 291 292 /* misc */ 293 uint32_t flags; /* flags */ 294 boolean_t need_resched; /* reschedule tx */ 295 boolean_t need_ldc_reset; /* ldc_reset needed */ 296 uint32_t hretries; /* handshake retry count */ 297 boolean_t resched_peer; /* send tx msg to peer */ 298 uint32_t resched_peer_txi; /* tx index to resched peer */ 299 300 /* receive thread field */ 301 kthread_t *rcv_thread; /* receive thread */ 302 uint32_t rcv_thr_flags; /* receive thread flags */ 303 kmutex_t rcv_thr_lock; /* lock for receive thread */ 304 kcondvar_t rcv_thr_cv; /* cond.var for recv thread */ 305 mblk_t *rcv_mhead; /* received mblks head */ 306 mblk_t *rcv_mtail; /* received mblks tail */ 307 ddi_softint_handle_t soft_handle; /* soft intr handle */ 308 int soft_pri; /* soft int priority */ 309 kmutex_t soft_lock; /* lock for soft intr handler */ 310 311 /* channel statistics */ 312 vgen_stats_t *statsp; /* channel statistics */ 313 kstat_t *ksp; /* channel kstats */ 314 315 } vgen_ldc_t; 316 317 /* Channel list structure */ 318 typedef struct vgen_ldclist_s { 319 vgen_ldc_t *headp; /* head of the list */ 320 krwlock_t rwlock; /* sync access to the list */ 321 int num_ldcs; /* number of channels in the list */ 322 } vgen_ldclist_t; 323 324 /* port information structure */ 325 typedef struct vgen_port { 326 struct vgen_port *nextp; /* next port in the list */ 327 struct vgen *vgenp; /* associated vgen_t */ 328 int port_num; /* port number */ 329 vgen_ldclist_t ldclist; /* list of ldcs for this port */ 330 struct ether_addr macaddr; /* mac address of peer */ 331 } vgen_port_t; 332 333 /* port list structure */ 334 typedef struct vgen_portlist { 335 vgen_port_t *headp; /* head of ports */ 336 vgen_port_t *tailp; /* tail */ 337 krwlock_t rwlock; /* sync access to the port list */ 338 } vgen_portlist_t; 339 340 /* vgen instance information */ 341 typedef struct vgen { 342 void *vnetp; /* associated vnet instance */ 343 dev_info_t *vnetdip; /* dip of vnet */ 344 uint8_t macaddr[ETHERADDRL]; /* mac addr of vnet */ 345 kmutex_t lock; /* synchornize ops */ 346 int flags; /* flags */ 347 vgen_portlist_t vgenports; /* Port List */ 348 mdeg_node_spec_t *mdeg_parentp; 349 mdeg_handle_t mdeg_hdl; 350 vgen_port_t *vsw_portp; /* port connected to vsw */ 351 mac_register_t *macp; /* vgen mac ops */ 352 struct ether_addr *mctab; /* multicast addr table */ 353 uint32_t mcsize; /* allocated size of mctab */ 354 uint32_t mccount; /* # of valid addrs in mctab */ 355 vio_mblk_pool_t *rmp; /* rx mblk pools to be freed */ 356 } vgen_t; 357 358 #ifdef __cplusplus 359 } 360 #endif 361 362 #endif /* _VNET_GEN_H */ 363