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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 | #include <linux/kernel.h> #include <linux/string.h> #include <linux/timer.h> #include <linux/init.h> /* We are an ethernet device */ #include <linux/if_ether.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <net/sock.h> #include <linux/skbuff.h> #include <linux/ip.h> #include <asm/byteorder.h> #include <asm/uaccess.h> #include <asm/checksum.h> /* for ip_fast_csum() */ #include <net/arp.h> #include <net/dst.h> #include <linux/proc_fs.h> /* And atm device */ #include <linux/atmdev.h> #include <linux/atmlec.h> #include <linux/atmmpc.h> /* Modular too */ #include <linux/config.h> #include <linux/module.h> #include "lec.h" #include "mpc.h" #include "tunable.h" #include "resources.h" /* for bind_vcc() */ /* * mpc.c: Implementation of MPOA client kernel part */ #if 0 #define dprintk printk /* debug */ #else #define dprintk(format,args...) #endif #if 0 #define ddprintk printk /* more debug */ #else #define ddprintk(format,args...) #endif #define MPOA_TAG_LEN 4 /* mpc_daemon -> kernel */ static void MPOA_trigger_rcvd (struct k_message *msg, struct mpoa_client *mpc); static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc); static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc); static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc); static void mps_death(struct k_message *msg, struct mpoa_client *mpc); static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action); static void MPOA_cache_impos_rcvd(struct k_message *msg, struct mpoa_client *mpc); static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc); static void set_mps_mac_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc); static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac, uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type); static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry); static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc); static void mpoad_close(struct atm_vcc *vcc); static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb); static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb); static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev); static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev); static void mpc_timer_refresh(void); static void mpc_cache_check( unsigned long checking_time ); static struct llc_snap_hdr llc_snap_mpoa_ctrl = { 0xaa, 0xaa, 0x03, {0x00, 0x00, 0x5e}, {0x00, 0x03} /* For MPOA control PDUs */ }; static struct llc_snap_hdr llc_snap_mpoa_data = { 0xaa, 0xaa, 0x03, {0x00, 0x00, 0x00}, {0x08, 0x00} /* This is for IP PDUs only */ }; static struct llc_snap_hdr llc_snap_mpoa_data_tagged = { 0xaa, 0xaa, 0x03, {0x00, 0x00, 0x00}, {0x88, 0x4c} /* This is for tagged data PDUs */ }; static struct notifier_block mpoa_notifier = { mpoa_event_listener, NULL, 0 }; #ifdef CONFIG_PROC_FS extern int mpc_proc_init(void); extern void mpc_proc_clean(void); #endif struct mpoa_client *mpcs = NULL; /* FIXME */ static struct atm_mpoa_qos *qos_head = NULL; static struct timer_list mpc_timer; static struct mpoa_client *find_mpc_by_itfnum(int itf) { struct mpoa_client *mpc; mpc = mpcs; /* our global linked list */ while (mpc != NULL) { if (mpc->dev_num == itf) return mpc; mpc = mpc->next; } return NULL; /* not found */ } static struct mpoa_client *find_mpc_by_vcc(struct atm_vcc *vcc) { struct mpoa_client *mpc; mpc = mpcs; /* our global linked list */ while (mpc != NULL) { if (mpc->mpoad_vcc == vcc) return mpc; mpc = mpc->next; } return NULL; /* not found */ } static struct mpoa_client *find_mpc_by_lec(struct net_device *dev) { struct mpoa_client *mpc; mpc = mpcs; /* our global linked list */ while (mpc != NULL) { if (mpc->dev == dev) return mpc; mpc = mpc->next; } return NULL; /* not found */ } /* * Functions for managing QoS list */ /* * Overwrites the old entry or makes a new one. */ struct atm_mpoa_qos *atm_mpoa_add_qos(uint32_t dst_ip, struct atm_qos *qos) { struct atm_mpoa_qos *entry; entry = atm_mpoa_search_qos(dst_ip); if (entry != NULL) { entry->qos = *qos; return entry; } entry = kmalloc(sizeof(struct atm_qos), GFP_KERNEL); if (entry == NULL) { printk("mpoa: atm_mpoa_add_qos: out of memory\n"); return entry; } entry->ipaddr = dst_ip; entry->qos = *qos; entry->next = qos_head; qos_head = entry; return entry; } struct atm_mpoa_qos *atm_mpoa_search_qos(uint32_t dst_ip) { struct atm_mpoa_qos *qos; qos = qos_head; while( qos != NULL ){ if(qos->ipaddr == dst_ip) { break; } qos = qos->next; } return qos; } /* * Returns 0 for failure */ int atm_mpoa_delete_qos(struct atm_mpoa_qos *entry) { struct atm_mpoa_qos *curr; if (entry == NULL) return 0; if (entry == qos_head) { qos_head = qos_head->next; kfree(entry); return 1; } curr = qos_head; while (curr != NULL) { if (curr->next == entry) { curr->next = entry->next; kfree(entry); return 1; } curr = curr->next; } return 0; } void atm_mpoa_disp_qos(char *page, int *len) { unsigned char *ip; char ipaddr[16]; struct atm_mpoa_qos *qos; qos = qos_head; *len += sprintf(page + *len, "QoS entries for shortcuts:\n"); *len += sprintf(page + *len, "IP address\n TX:max_pcr pcr min_pcr max_cdv max_sdu\n RX:max_pcr pcr min_pcr max_cdv max_sdu\n"); ipaddr[sizeof(ipaddr)-1] = '\0'; while (qos != NULL) { ip = (unsigned char *)&qos->ipaddr; sprintf(ipaddr, "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]); *len += sprintf(page + *len, "%-16s\n %-7d %-7d %-7d %-7d %-7d\n %-7d %-7d %-7d %-7d %-7d\n", ipaddr, qos->qos.txtp.max_pcr, qos->qos.txtp.pcr, qos->qos.txtp.min_pcr, qos->qos.txtp.max_cdv, qos->qos.txtp.max_sdu, qos->qos.rxtp.max_pcr, qos->qos.rxtp.pcr, qos->qos.rxtp.min_pcr, qos->qos.rxtp.max_cdv, qos->qos.rxtp.max_sdu); qos = qos->next; } return; } static struct net_device *find_lec_by_itfnum(int itf) { extern struct atm_lane_ops atm_lane_ops; /* in common.c */ if (atm_lane_ops.get_lecs == NULL) return NULL; return atm_lane_ops.get_lecs()[itf]; /* FIXME: something better */ } static struct mpoa_client *alloc_mpc(void) { struct mpoa_client *mpc; mpc = kmalloc(sizeof (struct mpoa_client), GFP_KERNEL); if (mpc == NULL) return NULL; memset(mpc, 0, sizeof(struct mpoa_client)); #if 0 /* compiler seems to barf on this */ mpc->ingress_lock = RW_LOCK_UNLOCKED; mpc->egress_lock = RW_LOCK_UNLOCKED; #endif mpc->next = mpcs; atm_mpoa_init_cache(mpc); mpc->parameters.mpc_p1 = MPC_P1; mpc->parameters.mpc_p2 = MPC_P2; memset(mpc->parameters.mpc_p3,0,sizeof(mpc->parameters.mpc_p3)); mpc->parameters.mpc_p4 = MPC_P4; mpc->parameters.mpc_p5 = MPC_P5; mpc->parameters.mpc_p6 = MPC_P6; mpcs = mpc; return mpc; } /* * * start_mpc() puts the MPC on line. All the packets destined * to the lec underneath us are now being monitored and * shortcuts will be established. * */ static void start_mpc(struct mpoa_client *mpc, struct net_device *dev) { dprintk("mpoa: (%s) start_mpc:\n", mpc->dev->name); if (dev->hard_start_xmit == NULL) { printk("mpoa: (%s) start_mpc: dev->hard_start_xmit == NULL, not starting\n", dev->name); return; } mpc->old_hard_start_xmit = dev->hard_start_xmit; dev->hard_start_xmit = mpc_send_packet; return; } static void stop_mpc(struct mpoa_client *mpc) { dprintk("mpoa: (%s) stop_mpc:", mpc->dev->name); /* Lets not nullify lec device's dev->hard_start_xmit */ if (mpc->dev->hard_start_xmit != mpc_send_packet) { dprintk(" mpc already stopped, not fatal\n"); return; } dprintk("\n"); mpc->dev->hard_start_xmit = mpc->old_hard_start_xmit; mpc->old_hard_start_xmit = NULL; /* close_shortcuts(mpc); ??? FIXME */ return; } static const char *mpoa_device_type_string (char type) { switch(type) { case NON_MPOA: return "non-MPOA device"; break; case MPS: return "MPS"; break; case MPC: return "MPC"; break; case MPS_AND_MPC: return "both MPS and MPC"; break; default: return "unspecified (non-MPOA) device"; break; } return ""; /* not reached */ } /* * lec device calls this via its dev->priv->lane2_ops->associate_indicator() * when it sees a TLV in LE_ARP packet. * We fill in the pointer above when we see a LANE2 lec initializing * See LANE2 spec 3.1.5 * * Quite a big and ugly function but when you look at it * all it does is to try to locate and parse MPOA Device * Type TLV. * We give our lec a pointer to this function and when the * lec sees a TLV it uses the pointer to call this function. * */ static void lane2_assoc_ind(struct net_device *dev, uint8_t *mac_addr, uint8_t *tlvs, uint32_t sizeoftlvs) { uint32_t type; uint8_t length, mpoa_device_type, number_of_mps_macs; uint8_t *end_of_tlvs; struct mpoa_client *mpc; mpoa_device_type = number_of_mps_macs = 0; /* silence gcc */ dprintk("mpoa: (%s) lane2_assoc_ind: received TLV(s), ", dev->name); dprintk("total length of all TLVs %d\n", sizeoftlvs); mpc = find_mpc_by_lec(dev); /* Sampo-Fix: moved here from below */ if (mpc == NULL) { printk("mpoa: (%s) lane2_assoc_ind: no mpc\n", dev->name); return; } end_of_tlvs = tlvs + sizeoftlvs; while (end_of_tlvs - tlvs >= 5) { type = (tlvs[0] << 24) | (tlvs[1] << 16) | (tlvs[2] << 8) | tlvs[3]; length = tlvs[4]; tlvs += 5; dprintk(" type 0x%x length %02x\n", type, length); if (tlvs + length > end_of_tlvs) { printk("TLV value extends past its buffer, aborting parse\n"); return; } if (type == 0) { printk("mpoa: (%s) lane2_assoc_ind: TLV type was 0, returning\n", dev->name); return; } if (type != TLV_MPOA_DEVICE_TYPE) { tlvs += length; continue; /* skip other TLVs */ } mpoa_device_type = *tlvs++; number_of_mps_macs = *tlvs++; dprintk("mpoa: (%s) MPOA device type '%s', ", dev->name, mpoa_device_type_string(mpoa_device_type)); if (mpoa_device_type == MPS_AND_MPC && length < (42 + number_of_mps_macs*ETH_ALEN)) { /* :) */ printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", dev->name); continue; } if ((mpoa_device_type == MPS || mpoa_device_type == MPC) && length < 22 + number_of_mps_macs*ETH_ALEN) { printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", dev->name); continue; } if (mpoa_device_type != MPS && mpoa_device_type != MPS_AND_MPC) { dprintk("ignoring non-MPS device\n"); if (mpoa_device_type == MPC) tlvs += 20; continue; /* we are only interested in MPSs */ } if (number_of_mps_macs == 0 && mpoa_device_type == MPS_AND_MPC) { printk("\nmpoa: (%s) lane2_assoc_ind: MPS_AND_MPC has zero MACs\n", dev->name); continue; /* someone should read the spec */ } dprintk("this MPS has %d MAC addresses\n", number_of_mps_macs); /* ok, now we can go and tell our daemon the control address of MPS */ send_set_mps_ctrl_addr(tlvs, mpc); tlvs = copy_macs(mpc, mac_addr, tlvs, number_of_mps_macs, mpoa_device_type); if (tlvs == NULL) return; } if (end_of_tlvs - tlvs != 0) printk("mpoa: (%s) lane2_assoc_ind: ignoring %d bytes of trailing TLV carbage\n", dev->name, end_of_tlvs - tlvs); return; } /* * Store at least advertizing router's MAC address * plus the possible MAC address(es) to mpc->mps_macs. * For a freshly allocated MPOA client mpc->mps_macs == 0. */ static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac, uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type) { int num_macs; num_macs = (mps_macs > 1) ? mps_macs : 1; if (mpc->number_of_mps_macs != num_macs) { /* need to reallocate? */ if (mpc->number_of_mps_macs != 0) kfree(mpc->mps_macs); mpc->number_of_mps_macs = 0; mpc->mps_macs = kmalloc(num_macs*ETH_ALEN, GFP_KERNEL); if (mpc->mps_macs == NULL) { printk("mpoa: (%s) copy_macs: out of mem\n", mpc->dev->name); return NULL; } } memcpy(mpc->mps_macs, router_mac, ETH_ALEN); tlvs += 20; if (device_type == MPS_AND_MPC) tlvs += 20; if (mps_macs > 0) memcpy(mpc->mps_macs, tlvs, mps_macs*ETH_ALEN); tlvs += mps_macs*ETH_ALEN; mpc->number_of_mps_macs = num_macs; return tlvs; } /* FIXME: tarvitsee työtä */ static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc) { in_cache_entry *entry; struct iphdr *iph; char *buff; uint32_t ipaddr = 0; static struct { struct llc_snap_hdr hdr; uint32_t tag; } tagged_llc_snap_hdr = { {0xaa, 0xaa, 0x03, {0x00, 0x00, 0x00}, {0x88, 0x4c}}, 0 }; buff = skb->data + mpc->dev->hard_header_len; iph = (struct iphdr *)buff; ipaddr = iph->daddr; ddprintk("mpoa: (%s) send_via_shortcut: ipaddr 0x%x\n", mpc->dev->name, ipaddr); entry = mpc->in_ops->search(ipaddr, mpc); if (entry == NULL) { mpc->in_ops->new_entry(ipaddr, mpc); return 1; } if (mpc->in_ops->cache_hit(entry, mpc) != OPEN){ /* threshold not exceeded or VCC not ready */ ddprintk("mpoa: (%s) send_via_shortcut: cache_hit: returns != OPEN\n", mpc->dev->name); return 1; } ddprintk("mpoa: (%s) send_via_shortcut: using shortcut\n", mpc->dev->name); /* MPOA spec A.1.4, MPOA client must decrement IP ttl at least by one */ if (iph->ttl <= 1) { ddprintk("mpoa: (%s) send_via_shortcut: IP ttl = %u, using LANE\n", mpc->dev->name, iph->ttl); return 1; } iph->ttl--; iph->check = 0; iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); if (entry->ctrl_info.tag != 0) { ddprintk("mpoa: (%s) send_via_shortcut: adding tag 0x%x\n", mpc->dev->name, entry->ctrl_info.tag); tagged_llc_snap_hdr.tag = entry->ctrl_info.tag; skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ skb_push(skb, sizeof(tagged_llc_snap_hdr)); /* add LLC/SNAP header */ memcpy(skb->data, &tagged_llc_snap_hdr, sizeof(tagged_llc_snap_hdr)); } else { skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ skb_push(skb, sizeof(struct llc_snap_hdr)); /* add LLC/SNAP header + tag */ memcpy(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr)); } atomic_add(skb->truesize, &entry->shortcut->tx_inuse); ATM_SKB(skb)->iovcnt = 0; /* just to be safe ... */ ATM_SKB(skb)->atm_options = entry->shortcut->atm_options; entry->shortcut->dev->ops->send(entry->shortcut, skb); entry->packets_fwded++; return 0; } /* * Probably needs some error checks and locking, not sure... */ static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev) { int retval; struct mpoa_client *mpc; struct ethhdr *eth; int i = 0; mpc = find_mpc_by_lec(dev); /* this should NEVER fail */ if(mpc == NULL) { printk("mpoa: (%s) mpc_send_packet: no MPC found\n", dev->name); goto non_ip; } eth = (struct ethhdr *)skb->data; if (eth->h_proto != htons(ETH_P_IP)) goto non_ip; /* Multi-Protocol Over ATM :-) */ while (i < mpc->number_of_mps_macs) { if (memcmp(eth->h_dest, (mpc->mps_macs + i*ETH_ALEN), ETH_ALEN) == 0) if ( send_via_shortcut(skb, mpc) == 0 ) /* try shortcut */ return 0; /* success! */ i++; } non_ip: retval = mpc->old_hard_start_xmit(skb,dev); return retval; } int atm_mpoa_vcc_attach(struct atm_vcc *vcc, long arg) { int bytes_left; struct mpoa_client *mpc; struct atmmpc_ioc ioc_data; in_cache_entry *in_entry; uint32_t ipaddr; unsigned char *ip; bytes_left = copy_from_user(&ioc_data, (void *)arg, sizeof(struct atmmpc_ioc)); if (bytes_left != 0) { printk("mpoa: mpc_vcc_attach: Short read (missed %d bytes) from userland\n", bytes_left); return -EFAULT; } ipaddr = ioc_data.ipaddr; if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF) return -EINVAL; mpc = find_mpc_by_itfnum(ioc_data.dev_num); if (mpc == NULL) return -EINVAL; if (ioc_data.type == MPC_SOCKET_INGRESS) { in_entry = mpc->in_ops->search(ipaddr, mpc); if (in_entry == NULL || in_entry->entry_state < INGRESS_RESOLVED) { printk("mpoa: (%s) mpc_vcc_attach: did not find RESOLVED entry from ingress cache\n", mpc->dev->name); return -EINVAL; } ip = (unsigned char*)&in_entry->ctrl_info.in_dst_ip; printk("mpoa: (%s) mpc_vcc_attach: attaching ingress SVC, entry = %u.%u.%u.%u\n", mpc->dev->name, ip[0], ip[1], ip[2], ip[3]); in_entry->shortcut = vcc; } else { printk("mpoa: (%s) mpc_vcc_attach: attaching egress SVC\n", mpc->dev->name); } vcc->proto_data = mpc->dev; vcc->push = mpc_push; return 0; } /* * */ static void mpc_vcc_close(struct atm_vcc *vcc, struct net_device *dev) { struct mpoa_client *mpc; in_cache_entry *in_entry; eg_cache_entry *eg_entry; mpc = find_mpc_by_lec(dev); if (mpc == NULL) { printk("mpoa: (%s) mpc_vcc_close: close for unknown MPC\n", dev->name); return; } dprintk("mpoa: (%s) mpc_vcc_close:\n", dev->name); in_entry = mpc->in_ops->search_by_vcc(vcc, mpc); if (in_entry) { unsigned char *ip = (unsigned char *)&in_entry->ctrl_info.in_dst_ip; dprintk("mpoa: (%s) mpc_vcc_close: ingress SVC closed ip = %u.%u.%u.%u\n", mpc->dev->name, ip[0], ip[1], ip[2], ip[3]); in_entry->shortcut = NULL; } eg_entry = mpc->eg_ops->search_by_vcc(vcc, mpc); if (eg_entry) { dprintk("mpoa: (%s) mpc_vcc_close: egress SVC closed\n", mpc->dev->name); eg_entry->shortcut = NULL; } if (in_entry == NULL && eg_entry == NULL) dprintk("mpoa: (%s) mpc_vcc_close: unused vcc closed\n", dev->name); return; } static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb) { struct net_device *dev = (struct net_device *)vcc->proto_data; struct sk_buff *new_skb; eg_cache_entry *eg; struct mpoa_client *mpc; uint32_t tag; char *tmp; ddprintk("mpoa: (%s) mpc_push:\n", dev->name); if (skb == NULL) { dprintk("mpoa: (%s) mpc_push: null skb, closing VCC\n", dev->name); mpc_vcc_close(vcc, dev); return; } skb->dev = dev; if (memcmp(skb->data, &llc_snap_mpoa_ctrl, sizeof(struct llc_snap_hdr)) == 0) { dprintk("mpoa: (%s) mpc_push: control packet arrived\n", dev->name); skb_queue_tail(&vcc->recvq, skb); /* Pass control packets to daemon */ wake_up(&vcc->sleep); return; } /* data coming over the shortcut */ atm_return(vcc, skb->truesize); mpc = find_mpc_by_lec(dev); if (mpc == NULL) { printk("mpoa: (%s) mpc_push: unknown MPC\n", dev->name); return; } if (memcmp(skb->data, &llc_snap_mpoa_data_tagged, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA tagged data */ ddprintk("mpoa: (%s) mpc_push: tagged data packet arrived\n", dev->name); } else if (memcmp(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA data */ printk("mpoa: (%s) mpc_push: non-tagged data packet arrived\n", dev->name); printk(" mpc_push: non-tagged data unsupported, purging\n"); kfree_skb(skb); return; } else { printk("mpoa: (%s) mpc_push: garbage arrived, purging\n", dev->name); kfree_skb(skb); return; } tmp = skb->data + sizeof(struct llc_snap_hdr); tag = *(uint32_t *)tmp; eg = mpc->eg_ops->search_by_tag(tag, mpc); if (eg == NULL) { printk("mpoa: (%s) mpc_push: Didn't find egress cache entry, tag = %u\n", dev->name,tag); purge_egress_shortcut(vcc, NULL); kfree_skb(skb); return; } /* * See if ingress MPC is using shortcut we opened as a return channel. * This means we have a bi-directional vcc opened by us. */ if (eg->shortcut == NULL) { eg->shortcut = vcc; printk("mpoa: (%s) mpc_push: egress SVC in use\n", dev->name); } skb_pull(skb, sizeof(struct llc_snap_hdr) + sizeof(tag)); /* get rid of LLC/SNAP header */ new_skb = skb_realloc_headroom(skb, eg->ctrl_info.DH_length); /* LLC/SNAP is shorter than MAC header :( */ kfree_skb(skb); if (new_skb == NULL) return; skb_push(new_skb, eg->ctrl_info.DH_length); /* add MAC header */ memcpy(new_skb->data, eg->ctrl_info.DLL_header, eg->ctrl_info.DH_length); new_skb->protocol = eth_type_trans(new_skb, dev); new_skb->nh.raw = new_skb->data; eg->latest_ip_addr = new_skb->nh.iph->saddr; eg->packets_rcvd++; netif_rx(new_skb); return; } static struct atmdev_ops mpc_ops = { /* only send is required */ NULL, /* dev_close */ NULL, /* open */ mpoad_close, /* close */ NULL, /* ioctl */ NULL, /* getsockopt */ NULL, /* setsockopt */ msg_from_mpoad, /* send */ NULL, /* sg_send */ NULL, /* send_oam */ NULL, /* phy_put */ NULL, /* phy_get */ NULL, /* feedback */ NULL, /* change_qos */ NULL, /* free_rx_skb */ NULL /* proc_read */ }; static struct atm_dev mpc_dev = { &mpc_ops, /* device operations */ NULL, /* PHY operations */ "mpc", /* device type name */ 42, /* device index (dummy) */ NULL, /* VCC table */ NULL, /* last VCC */ NULL, /* per-device data */ NULL, /* private PHY data */ 0, /* device flags */ NULL, /* local ATM address */ { 0 } /* no ESI */ /* rest of the members will be 0 */ }; int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg) { struct mpoa_client *mpc; struct lec_priv *priv; if (mpcs == NULL) { init_timer(&mpc_timer); mpc_timer_refresh(); /* This lets us now how our LECs are doing */ register_netdevice_notifier(&mpoa_notifier); } mpc = find_mpc_by_itfnum(arg); if (mpc == NULL) { dprintk("mpoa: mpoad_attach: allocating new mpc for itf %d\n", arg); mpc = alloc_mpc(); mpc->dev_num = arg; mpc->dev = find_lec_by_itfnum(arg); /* NULL if there was no lec */ } if (mpc->mpoad_vcc) { printk("mpoa: mpoad_attach: mpoad is already present for itf %d\n", arg); return -EADDRINUSE; } if (mpc->dev) { /* check if the lec is LANE2 capable */ priv = (struct lec_priv *)mpc->dev->priv; if (priv->lane_version < 2) mpc->dev = NULL; else priv->lane2_ops->associate_indicator = lane2_assoc_ind; } mpc->mpoad_vcc = vcc; bind_vcc(vcc, &mpc_dev); vcc->flags |= ATM_VF_READY | ATM_VF_META; if (mpc->dev) { char empty[ATM_ESA_LEN]; memset(empty, 0, ATM_ESA_LEN); start_mpc(mpc, mpc->dev); /* set address if mpcd e.g. gets killed and restarted. * If we do not do it now we have to wait for the next LE_ARP */ if ( memcmp(mpc->mps_ctrl_addr, empty, ATM_ESA_LEN) != 0 ) send_set_mps_ctrl_addr(mpc->mps_ctrl_addr, mpc); } MOD_INC_USE_COUNT; return arg; } static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc) { struct k_message mesg; memcpy (mpc->mps_ctrl_addr, addr, ATM_ESA_LEN); mesg.type = SET_MPS_CTRL_ADDR; memcpy(mesg.MPS_ctrl, addr, ATM_ESA_LEN); msg_to_mpoad(&mesg, mpc); return; } static void mpoad_close(struct atm_vcc *vcc) { unsigned long flags; struct mpoa_client *mpc; struct sk_buff *skb; mpc = find_mpc_by_vcc(vcc); if (mpc == NULL) { printk("mpoa: mpoad_close: did not find MPC\n"); return; } if (!mpc->mpoad_vcc) { printk("mpoa: mpoad_close: close for non-present mpoad\n"); return; } mpc->mpoad_vcc = NULL; if (mpc->dev) { struct lec_priv *priv = (struct lec_priv *)mpc->dev->priv; priv->lane2_ops->associate_indicator = NULL; stop_mpc(mpc); } /* clear the caches */ write_lock_irqsave(&mpc->ingress_lock, flags); while(mpc->in_ops->cache_remove(mpc->in_cache, mpc)); write_unlock_irqrestore(&mpc->ingress_lock, flags); write_lock_irqsave(&mpc->egress_lock, flags); while(mpc->eg_ops->cache_remove(mpc->eg_cache, mpc)); write_unlock_irqrestore(&mpc->egress_lock, flags); while ( (skb = skb_dequeue(&vcc->recvq)) ){ atm_return(vcc, skb->truesize); kfree_skb(skb); } printk("mpoa: (%s) going down\n", (mpc->dev) ? mpc->dev->name : "<unknown>"); MOD_DEC_USE_COUNT; return; } /* * */ static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb) { struct mpoa_client *mpc = find_mpc_by_vcc(vcc); struct k_message *mesg = (struct k_message*)skb->data; atomic_sub(skb->truesize+ATM_PDU_OVHD, &vcc->tx_inuse); if (mpc == NULL) { printk("mpoa: msg_from_mpoad: no mpc found\n"); return 0; } dprintk("mpoa: (%s) msg_from_mpoad:", (mpc->dev) ? mpc->dev->name : "<unknown>"); switch(mesg->type) { case MPOA_RES_REPLY_RCVD: dprintk(" mpoa_res_reply_rcvd\n"); MPOA_res_reply_rcvd(mesg, mpc); break; case MPOA_TRIGGER_RCVD: dprintk(" mpoa_trigger_rcvd\n"); MPOA_trigger_rcvd(mesg, mpc); break; case INGRESS_PURGE_RCVD: dprintk(" nhrp_purge_rcvd\n"); ingress_purge_rcvd(mesg, mpc); break; case EGRESS_PURGE_RCVD: dprintk(" egress_purge_reply_rcvd\n"); egress_purge_rcvd(mesg, mpc); break; case MPS_DEATH: dprintk(" mps_death\n"); mps_death(mesg, mpc); break; case CACHE_IMPOS_RCVD: dprintk(" cache_impos_rcvd\n"); MPOA_cache_impos_rcvd(mesg, mpc); break; case SET_MPC_CTRL_ADDR: dprintk(" set_mpc_ctrl_addr\n"); set_mpc_ctrl_addr_rcvd(mesg, mpc); break; case SET_MPS_MAC_ADDR: dprintk(" set_mps_mac_addr\n"); set_mps_mac_addr_rcvd(mesg, mpc); break; case CLEAN_UP_AND_EXIT: dprintk(" clean_up_and_exit\n"); clean_up(mesg, mpc, DIE); break; case RELOAD: dprintk(" reload\n"); clean_up(mesg, mpc, RELOAD); break; case SET_MPC_PARAMS: dprintk(" set_mpc_params\n"); mpc->parameters = mesg->content.params; break; default: dprintk(" unknown message %d\n", mesg->type); break; } kfree_skb(skb); return 0; } int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc) { struct sk_buff *skb; if (mpc == NULL || !mpc->mpoad_vcc) { printk("mpoa: msg_to_mpoad: mesg %d to a non-existent mpoad\n", mesg->type); return -ENXIO; } skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC); if (skb == NULL) return -ENOMEM; skb_put(skb, sizeof(struct k_message)); memcpy(skb->data, mesg, sizeof(struct k_message)); atm_force_charge(mpc->mpoad_vcc, skb->truesize); skb_queue_tail(&mpc->mpoad_vcc->recvq, skb); wake_up(&mpc->mpoad_vcc->sleep); return 0; } static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev_ptr) { struct net_device *dev; struct mpoa_client *mpc; struct lec_priv *priv; dev = (struct net_device *)dev_ptr; if (dev->name == NULL || strncmp(dev->name, "lec", 3)) return NOTIFY_DONE; /* we are only interested in lec:s */ switch (event) { case NETDEV_REGISTER: /* a new lec device was allocated */ priv = (struct lec_priv *)dev->priv; if (priv->lane_version < 2) break; priv->lane2_ops->associate_indicator = lane2_assoc_ind; mpc = find_mpc_by_itfnum(priv->itfnum); if (mpc == NULL) { dprintk("mpoa: mpoa_event_listener: allocating new mpc for %s\n", dev->name); mpc = alloc_mpc(); if (mpc == NULL) { printk("mpoa: mpoa_event_listener: no new mpc"); break; } } mpc->dev_num = priv->itfnum; mpc->dev = dev; dprintk("mpoa: (%s) was initialized\n", dev->name); break; case NETDEV_UNREGISTER: /* the lec device was deallocated */ mpc = find_mpc_by_lec(dev); if (mpc == NULL) break; dprintk("mpoa: device (%s) was deallocated\n", dev->name); stop_mpc(mpc); mpc->dev = NULL; break; case NETDEV_UP: /* the dev was ifconfig'ed up */ mpc = find_mpc_by_lec(dev); if (mpc == NULL) break; if (mpc->mpoad_vcc != NULL) { start_mpc(mpc, dev); } break; case NETDEV_DOWN: /* the dev was ifconfig'ed down */ /* this means dev->start == 0 and * the flow of packets from the * upper layer stops */ mpc = find_mpc_by_lec(dev); if (mpc == NULL) break; if (mpc->mpoad_vcc != NULL) { stop_mpc(mpc); } break; case NETDEV_REBOOT: case NETDEV_CHANGE: case NETDEV_CHANGEMTU: case NETDEV_CHANGEADDR: case NETDEV_GOING_DOWN: break; default: break; } return NOTIFY_DONE; } /* * Functions which are called after a message is received from mpcd. * Msg is reused on purpose. */ static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *client) { uint32_t dst_ip = msg->content.in_info.in_dst_ip; in_cache_entry *entry; entry = client->in_ops->search(dst_ip, client); if( entry == NULL ){ entry = client->in_ops->new_entry(dst_ip, client); entry->entry_state = INGRESS_RESOLVING; msg->type = SND_MPOA_RES_RQST; msg->content.in_info = entry->ctrl_info; msg_to_mpoad(msg,client); do_gettimeofday(&(entry->reply_wait)); return; } if( entry->entry_state == INGRESS_INVALID ){ entry->entry_state = INGRESS_RESOLVING; msg->type = SND_MPOA_RES_RQST; msg->content.in_info = entry->ctrl_info; msg_to_mpoad(msg,client); do_gettimeofday(&(entry->reply_wait)); return; } printk("mpoa: (%s) MPOA_trigger_rcvd: entry already in resolving state\n", (client->dev) ? client->dev->name : "<unknown>"); return; } /* * Things get complicated because we have to check if there's an egress * shortcut with suitable traffic parameters we could use. */ static void check_qos_and_open_shortcut(struct k_message *msg, struct mpoa_client *client, in_cache_entry *entry){ uint32_t dst_ip = msg->content.in_info.in_dst_ip; unsigned char *ip = (unsigned char *)&dst_ip; struct atm_mpoa_qos *qos = atm_mpoa_search_qos(dst_ip); eg_cache_entry *eg_entry = client->eg_ops->search_by_src_ip(dst_ip, client); if(eg_entry && eg_entry->shortcut){ if(eg_entry->shortcut->qos.txtp.traffic_class & msg->qos.txtp.traffic_class & (qos ? qos->qos.txtp.traffic_class : ATM_UBR | ATM_CBR)){ if(eg_entry->shortcut->qos.txtp.traffic_class == ATM_UBR) entry->shortcut = eg_entry->shortcut; else if(eg_entry->shortcut->qos.txtp.max_pcr > 0) entry->shortcut = eg_entry->shortcut; } if(entry->shortcut){ dprintk("mpoa: (%s) using egress SVC to reach %d.%d.%d.%d\n",client->dev->name, ip[0], ip[1], ip[2], ip[3]); return; } } /* No luck in the egress cache we must open an ingress SVC */ msg->type = OPEN_INGRESS_SVC; if (qos && (qos->qos.txtp.traffic_class == msg->qos.txtp.traffic_class)) { msg->qos = qos->qos; printk("mpoa: (%s) trying to get a CBR shortcut\n",client->dev->name); } else memset(&msg->qos,0,sizeof(struct atm_qos)); msg_to_mpoad(msg, client); return; } static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *client) { unsigned char *ip; uint32_t dst_ip = msg->content.in_info.in_dst_ip; in_cache_entry *entry = client->in_ops->search(dst_ip, client); ip = (unsigned char *)&dst_ip; dprintk("mpoa: (%s) MPOA_res_reply_rcvd: ip %d.%d.%d.%d\n", client->dev->name, ip[0], ip[1], ip[2], ip[3]); ddprintk("mpoa: (%s) MPOA_res_reply_rcvd() entry = %p", client->dev->name, entry); if(entry == NULL){ printk("\nmpoa: (%s) ARGH, received res. reply for an entry that doesn't exist.\n", client->dev->name); return; } ddprintk(" entry_state = %d ", entry->entry_state); if (entry->entry_state == INGRESS_RESOLVED) { printk("\nmpoa: (%s) MPOA_res_reply_rcvd for RESOLVED entry!\n", client->dev->name); return; } entry->ctrl_info = msg->content.in_info; do_gettimeofday(&(entry->tv)); do_gettimeofday(&(entry->reply_wait)); /* Used in refreshing func from now on */ entry->refresh_time = 0; ddprintk("entry->shortcut = %p\n", entry->shortcut); if(entry->entry_state == INGRESS_RESOLVING && entry->shortcut != NULL){ entry->entry_state = INGRESS_RESOLVED; return; /* Shortcut already open... */ } if (entry->shortcut != NULL) { printk("mpoa: (%s) MPOA_res_reply_rcvd: entry->shortcut != NULL, impossible!\n", client->dev->name); return; } check_qos_and_open_shortcut(msg, client, entry); entry->entry_state = INGRESS_RESOLVED; return; } static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) { uint32_t dst_ip = msg->content.in_info.in_dst_ip; uint32_t mask = msg->ip_mask; unsigned char *ip = (unsigned char *)&dst_ip; in_cache_entry *entry = mpc->in_ops->search_with_mask(dst_ip, mpc, mask); if( entry == NULL ){ printk("mpoa: (%s) ingress_purge_rcvd: recieved a purge for an entry that doesn't exist, ", mpc->dev->name); printk("ip = %u.%u.%u.%u\n", ip[0], ip[1], ip[2], ip[3]); return; } while(entry != NULL){ dprintk("mpoa: (%s) ingress_purge_rcvd: removing an ingress entry, ip = %u.%u.%u.%u\n" , mpc->dev->name, ip[0], ip[1], ip[2], ip[3]); mpc->in_ops->cache_remove(entry, mpc); entry = mpc->in_ops->search_with_mask(dst_ip, mpc, mask); } return; } static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) { unsigned long flags; uint32_t cache_id = msg->content.eg_info.cache_id; eg_cache_entry *entry = mpc->eg_ops->search_by_cache_id(cache_id, mpc); if( entry == NULL ){ printk("mpoa: (%s) egress_purge_rcvd: received a purge reply for an entry that doesn't exist\n", mpc->dev->name); return; } write_lock_irqsave(&mpc->egress_lock, flags); mpc->eg_ops->cache_remove(entry, mpc); write_unlock_irqrestore(&mpc->egress_lock, flags); return; } static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry) { struct k_message *purge_msg; struct sk_buff *skb; dprintk("mpoa: purge_egress_shortcut: entering\n"); if (vcc == NULL) { printk("mpoa: purge_egress_shortcut: vcc == NULL\n"); return; } skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC); if (skb == NULL) { printk("mpoa: purge_egress_shortcut: out of memory\n"); return; } skb_put(skb, sizeof(struct k_message)); memset(skb->data, 0, sizeof(struct k_message)); purge_msg = (struct k_message *)skb->data; purge_msg->type = DATA_PLANE_PURGE; if (entry != NULL) purge_msg->content.eg_info = entry->ctrl_info; atm_force_charge(vcc, skb->truesize); skb_queue_tail(&vcc->recvq, skb); wake_up(&vcc->sleep); dprintk("mpoa: purge_egress_shortcut: exiting:\n"); return; } /* * Our MPS died. Tell our daemon to send NHRP data plane purge to each * of the egress shortcuts we have. */ static void mps_death( struct k_message * msg, struct mpoa_client * mpc ) { unsigned long flags; eg_cache_entry *entry; dprintk("mpoa: (%s) mps_death:\n", mpc->dev->name); if(memcmp(msg->MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN)){ printk("mpoa: (%s) mps_death: wrong MPS\n", mpc->dev->name); return; } entry = mpc->eg_cache; while (entry != NULL) { purge_egress_shortcut(entry->shortcut, entry); entry = entry->next; } write_lock_irqsave(&mpc->ingress_lock, flags); while(mpc->in_ops->cache_remove(mpc->in_cache, mpc)); write_unlock_irqrestore(&mpc->ingress_lock, flags); write_lock_irqsave(&mpc->egress_lock, flags); while(mpc->eg_ops->cache_remove(mpc->eg_cache, mpc)); write_unlock_irqrestore(&mpc->egress_lock, flags); return; } static void MPOA_cache_impos_rcvd( struct k_message * msg, struct mpoa_client * mpc){ uint16_t holding_time; unsigned long flags; eg_cache_entry *entry = mpc->eg_ops->search_by_cache_id(msg->content.eg_info.cache_id, mpc); holding_time = msg->content.eg_info.holding_time; dprintk("mpoa: (%s) MPOA_cache_impos_rcvd: entry = %p, holding_time = %u\n", mpc->dev->name, entry, holding_time); if(entry == NULL && holding_time) { mpc->eg_ops->new_entry(msg, mpc); return; } if(holding_time){ mpc->eg_ops->update(entry, holding_time); return; } write_lock_irqsave(&mpc->egress_lock, flags); mpc->eg_ops->cache_remove(entry, mpc); write_unlock_irqrestore(&mpc->egress_lock, flags); return; } static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc) { struct lec_priv *priv; int i, retval ; uint8_t tlv[4 + 1 + 1 + 1 + ATM_ESA_LEN]; tlv[0] = 00; tlv[1] = 0xa0; tlv[2] = 0x3e; tlv[3] = 0x2a; /* type */ tlv[4] = 1 + 1 + ATM_ESA_LEN; /* length */ tlv[5] = 0x02; /* MPOA client */ tlv[6] = 0x00; /* number of MPS MAC addresses */ memcpy(&tlv[7], mesg->MPS_ctrl, ATM_ESA_LEN); /* MPC ctrl ATM addr */ memcpy(mpc->our_ctrl_addr, mesg->MPS_ctrl, ATM_ESA_LEN); dprintk("mpoa: (%s) setting MPC ctrl ATM address to ", (mpc->dev) ? mpc->dev->name : "<unknown>"); for (i = 7; i < sizeof(tlv); i++) dprintk("%02x ", tlv[i]); dprintk("\n"); if (mpc->dev) { priv = (struct lec_priv *)mpc->dev->priv; retval = priv->lane2_ops->associate_req(mpc->dev, mpc->dev->dev_addr, tlv, sizeof(tlv)); if (retval == 0) printk("mpoa: (%s) MPOA device type TLV association failed\n", mpc->dev->name); retval = priv->lane2_ops->resolve(mpc->dev, NULL, 1, NULL, NULL); if (retval < 0) printk("mpoa: (%s) targetless LE_ARP request failed\n", mpc->dev->name); } return; } static void set_mps_mac_addr_rcvd(struct k_message *msg, struct mpoa_client *client){ if(client->number_of_mps_macs) kfree(client->mps_macs); client->number_of_mps_macs = 0; client->mps_macs = kmalloc(ETH_ALEN,GFP_KERNEL); if (client->mps_macs == NULL) { printk("mpoa: set_mps_mac_addr_rcvd: out of memory\n"); return; } client->number_of_mps_macs = 1; memcpy(client->mps_macs, msg->MPS_ctrl, ETH_ALEN); return; } /* * purge egress cache and tell daemon to 'action' (DIE, RELOAD) */ static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action){ unsigned long flags; eg_cache_entry *entry; msg->type = SND_EGRESS_PURGE; read_lock_irqsave(&mpc->egress_lock, flags); entry = mpc->eg_cache; while(entry != NULL){ msg->content.eg_info = entry->ctrl_info; dprintk("mpoa: cache_id %u\n", entry->ctrl_info.cache_id); msg_to_mpoad(msg, mpc); entry = entry->next; } read_unlock_irqrestore(&mpc->egress_lock, flags); msg->type = action; msg_to_mpoad(msg, mpc); return; } static void mpc_timer_refresh() { mpc_timer.expires = jiffies + (MPC_P2 * HZ); mpc_timer.data = mpc_timer.expires; mpc_timer.function = mpc_cache_check; add_timer(&mpc_timer); return; } static void mpc_cache_check( unsigned long checking_time ) { struct mpoa_client *mpc = mpcs; static unsigned long previous_resolving_check_time = 0; static unsigned long previous_refresh_time = 0; while( mpc != NULL ){ mpc->in_ops->clear_count(mpc); mpc->eg_ops->clear_expired(mpc); if(checking_time - previous_resolving_check_time > mpc->parameters.mpc_p4 * HZ ){ mpc->in_ops->check_resolving(mpc); previous_resolving_check_time = checking_time; } if(checking_time - previous_refresh_time > mpc->parameters.mpc_p5 * HZ ){ mpc->in_ops->refresh(mpc); previous_refresh_time = checking_time; } mpc = mpc->next; } mpc_timer_refresh(); return; } void atm_mpoa_init_ops(struct atm_mpoa_ops *ops) { ops->mpoad_attach = atm_mpoa_mpoad_attach; ops->vcc_attach = atm_mpoa_vcc_attach; #ifdef CONFIG_PROC_FS if(mpc_proc_init() != 0) printk(KERN_INFO "mpoa: failed to initialize /proc/mpoa\n"); else printk(KERN_INFO "mpoa: /proc/mpoa initialized\n"); #endif printk("mpc.c: " __DATE__ " " __TIME__ " initialized\n"); return; } #ifdef MODULE int init_module(void) { extern struct atm_mpoa_ops atm_mpoa_ops; atm_mpoa_init_ops(&atm_mpoa_ops); return 0; } void cleanup_module(void) { extern struct atm_mpoa_ops atm_mpoa_ops; struct mpoa_client *mpc, *tmp; struct atm_mpoa_qos *qos, *nextqos; struct lec_priv *priv; if (MOD_IN_USE) { printk("mpc.c: module in use\n"); return; } #ifdef CONFIG_PROC_FS mpc_proc_clean(); #endif del_timer(&mpc_timer); unregister_netdevice_notifier(&mpoa_notifier); atm_mpoa_ops.mpoad_attach = NULL; atm_mpoa_ops.vcc_attach = NULL; mpc = mpcs; mpcs = NULL; while (mpc != NULL) { tmp = mpc->next; if (mpc->dev != NULL) { stop_mpc(mpc); priv = (struct lec_priv *)mpc->dev->priv; if (priv->lane2_ops != NULL) priv->lane2_ops->associate_indicator = NULL; } ddprintk("mpoa: cleanup_module: about to clear caches\n"); while(mpc->in_ops->cache_remove(mpc->in_cache, mpc)); while(mpc->eg_ops->cache_remove(mpc->eg_cache, mpc)); ddprintk("mpoa: cleanup_module: caches cleared\n"); kfree(mpc->mps_macs); memset(mpc, 0, sizeof(struct mpoa_client)); ddprintk("mpoa: cleanup_module: about to kfree %p\n", mpc); kfree(mpc); ddprintk("mpoa: cleanup_module: next mpc is at %p\n", tmp); mpc = tmp; } qos = qos_head; qos_head = NULL; while (qos != NULL) { nextqos = qos->next; dprintk("mpoa: cleanup_module: freeing qos entry %p\n", qos); kfree(qos); qos = nextqos; } return; } #endif /* MODULE */ |