199824461SJoe Perches #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ 299824461SJoe Perches 31da177e4SLinus Torvalds #include <linux/kernel.h> 41da177e4SLinus Torvalds #include <linux/string.h> 51da177e4SLinus Torvalds #include <linux/timer.h> 61da177e4SLinus Torvalds #include <linux/init.h> 71da177e4SLinus Torvalds #include <linux/bitops.h> 84fc268d2SRandy Dunlap #include <linux/capability.h> 91da177e4SLinus Torvalds #include <linux/seq_file.h> 101da177e4SLinus Torvalds 111da177e4SLinus Torvalds /* We are an ethernet device */ 121da177e4SLinus Torvalds #include <linux/if_ether.h> 131da177e4SLinus Torvalds #include <linux/netdevice.h> 141da177e4SLinus Torvalds #include <linux/etherdevice.h> 151da177e4SLinus Torvalds #include <net/sock.h> 161da177e4SLinus Torvalds #include <linux/skbuff.h> 171da177e4SLinus Torvalds #include <linux/ip.h> 181da177e4SLinus Torvalds #include <asm/byteorder.h> 191da177e4SLinus Torvalds #include <asm/uaccess.h> 201da177e4SLinus Torvalds #include <net/checksum.h> /* for ip_fast_csum() */ 211da177e4SLinus Torvalds #include <net/arp.h> 221da177e4SLinus Torvalds #include <net/dst.h> 231da177e4SLinus Torvalds #include <linux/proc_fs.h> 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds /* And atm device */ 261da177e4SLinus Torvalds #include <linux/atmdev.h> 271da177e4SLinus Torvalds #include <linux/atmlec.h> 281da177e4SLinus Torvalds #include <linux/atmmpc.h> 291da177e4SLinus Torvalds /* Modular too */ 301da177e4SLinus Torvalds #include <linux/module.h> 311da177e4SLinus Torvalds 321da177e4SLinus Torvalds #include "lec.h" 331da177e4SLinus Torvalds #include "mpc.h" 341da177e4SLinus Torvalds #include "resources.h" 351da177e4SLinus Torvalds 361da177e4SLinus Torvalds /* 371da177e4SLinus Torvalds * mpc.c: Implementation of MPOA client kernel part 381da177e4SLinus Torvalds */ 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds #if 0 411da177e4SLinus Torvalds #define dprintk printk /* debug */ 421da177e4SLinus Torvalds #else 431da177e4SLinus Torvalds #define dprintk(format,args...) 441da177e4SLinus Torvalds #endif 451da177e4SLinus Torvalds 461da177e4SLinus Torvalds #if 0 471da177e4SLinus Torvalds #define ddprintk printk /* more debug */ 481da177e4SLinus Torvalds #else 491da177e4SLinus Torvalds #define ddprintk(format,args...) 501da177e4SLinus Torvalds #endif 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds #define MPOA_TAG_LEN 4 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds /* mpc_daemon -> kernel */ 571da177e4SLinus Torvalds static void MPOA_trigger_rcvd (struct k_message *msg, struct mpoa_client *mpc); 581da177e4SLinus Torvalds static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc); 591da177e4SLinus Torvalds static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc); 601da177e4SLinus Torvalds static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc); 611da177e4SLinus Torvalds static void mps_death(struct k_message *msg, struct mpoa_client *mpc); 621da177e4SLinus Torvalds static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action); 631da177e4SLinus Torvalds static void MPOA_cache_impos_rcvd(struct k_message *msg, struct mpoa_client *mpc); 641da177e4SLinus Torvalds static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc); 651da177e4SLinus Torvalds static void set_mps_mac_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc); 661da177e4SLinus Torvalds 67cba5cbd1SDavid Howells static const uint8_t *copy_macs(struct mpoa_client *mpc, 68cba5cbd1SDavid Howells const uint8_t *router_mac, 69cba5cbd1SDavid Howells const uint8_t *tlvs, uint8_t mps_macs, 70cba5cbd1SDavid Howells uint8_t device_type); 711da177e4SLinus Torvalds static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry); 721da177e4SLinus Torvalds 73cba5cbd1SDavid Howells static void send_set_mps_ctrl_addr(const char *addr, struct mpoa_client *mpc); 741da177e4SLinus Torvalds static void mpoad_close(struct atm_vcc *vcc); 751da177e4SLinus Torvalds static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb); 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb); 783c805a22SStephen Hemminger static netdev_tx_t mpc_send_packet(struct sk_buff *skb, 793c805a22SStephen Hemminger struct net_device *dev); 801da177e4SLinus Torvalds static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev); 811da177e4SLinus Torvalds static void mpc_timer_refresh(void); 821da177e4SLinus Torvalds static void mpc_cache_check( unsigned long checking_time ); 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds static struct llc_snap_hdr llc_snap_mpoa_ctrl = { 851da177e4SLinus Torvalds 0xaa, 0xaa, 0x03, 861da177e4SLinus Torvalds {0x00, 0x00, 0x5e}, 871da177e4SLinus Torvalds {0x00, 0x03} /* For MPOA control PDUs */ 881da177e4SLinus Torvalds }; 891da177e4SLinus Torvalds static struct llc_snap_hdr llc_snap_mpoa_data = { 901da177e4SLinus Torvalds 0xaa, 0xaa, 0x03, 911da177e4SLinus Torvalds {0x00, 0x00, 0x00}, 921da177e4SLinus Torvalds {0x08, 0x00} /* This is for IP PDUs only */ 931da177e4SLinus Torvalds }; 941da177e4SLinus Torvalds static struct llc_snap_hdr llc_snap_mpoa_data_tagged = { 951da177e4SLinus Torvalds 0xaa, 0xaa, 0x03, 961da177e4SLinus Torvalds {0x00, 0x00, 0x00}, 971da177e4SLinus Torvalds {0x88, 0x4c} /* This is for tagged data PDUs */ 981da177e4SLinus Torvalds }; 991da177e4SLinus Torvalds 1001da177e4SLinus Torvalds static struct notifier_block mpoa_notifier = { 1011da177e4SLinus Torvalds mpoa_event_listener, 1021da177e4SLinus Torvalds NULL, 1031da177e4SLinus Torvalds 0 1041da177e4SLinus Torvalds }; 1051da177e4SLinus Torvalds 1061da177e4SLinus Torvalds struct mpoa_client *mpcs = NULL; /* FIXME */ 1071da177e4SLinus Torvalds static struct atm_mpoa_qos *qos_head = NULL; 1088d06afabSIngo Molnar static DEFINE_TIMER(mpc_timer, NULL, 0, 0); 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds static struct mpoa_client *find_mpc_by_itfnum(int itf) 1121da177e4SLinus Torvalds { 1131da177e4SLinus Torvalds struct mpoa_client *mpc; 1141da177e4SLinus Torvalds 1151da177e4SLinus Torvalds mpc = mpcs; /* our global linked list */ 1161da177e4SLinus Torvalds while (mpc != NULL) { 1171da177e4SLinus Torvalds if (mpc->dev_num == itf) 1181da177e4SLinus Torvalds return mpc; 1191da177e4SLinus Torvalds mpc = mpc->next; 1201da177e4SLinus Torvalds } 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvalds return NULL; /* not found */ 1231da177e4SLinus Torvalds } 1241da177e4SLinus Torvalds 1251da177e4SLinus Torvalds static struct mpoa_client *find_mpc_by_vcc(struct atm_vcc *vcc) 1261da177e4SLinus Torvalds { 1271da177e4SLinus Torvalds struct mpoa_client *mpc; 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds mpc = mpcs; /* our global linked list */ 1301da177e4SLinus Torvalds while (mpc != NULL) { 1311da177e4SLinus Torvalds if (mpc->mpoad_vcc == vcc) 1321da177e4SLinus Torvalds return mpc; 1331da177e4SLinus Torvalds mpc = mpc->next; 1341da177e4SLinus Torvalds } 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds return NULL; /* not found */ 1371da177e4SLinus Torvalds } 1381da177e4SLinus Torvalds 1391da177e4SLinus Torvalds static struct mpoa_client *find_mpc_by_lec(struct net_device *dev) 1401da177e4SLinus Torvalds { 1411da177e4SLinus Torvalds struct mpoa_client *mpc; 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds mpc = mpcs; /* our global linked list */ 1441da177e4SLinus Torvalds while (mpc != NULL) { 1451da177e4SLinus Torvalds if (mpc->dev == dev) 1461da177e4SLinus Torvalds return mpc; 1471da177e4SLinus Torvalds mpc = mpc->next; 1481da177e4SLinus Torvalds } 1491da177e4SLinus Torvalds 1501da177e4SLinus Torvalds return NULL; /* not found */ 1511da177e4SLinus Torvalds } 1521da177e4SLinus Torvalds 1531da177e4SLinus Torvalds /* 1541da177e4SLinus Torvalds * Functions for managing QoS list 1551da177e4SLinus Torvalds */ 1561da177e4SLinus Torvalds 1571da177e4SLinus Torvalds /* 1581da177e4SLinus Torvalds * Overwrites the old entry or makes a new one. 1591da177e4SLinus Torvalds */ 16030d492daSAl Viro struct atm_mpoa_qos *atm_mpoa_add_qos(__be32 dst_ip, struct atm_qos *qos) 1611da177e4SLinus Torvalds { 1621da177e4SLinus Torvalds struct atm_mpoa_qos *entry; 1631da177e4SLinus Torvalds 1641da177e4SLinus Torvalds entry = atm_mpoa_search_qos(dst_ip); 1651da177e4SLinus Torvalds if (entry != NULL) { 1661da177e4SLinus Torvalds entry->qos = *qos; 1671da177e4SLinus Torvalds return entry; 1681da177e4SLinus Torvalds } 1691da177e4SLinus Torvalds 1701da177e4SLinus Torvalds entry = kmalloc(sizeof(struct atm_mpoa_qos), GFP_KERNEL); 1711da177e4SLinus Torvalds if (entry == NULL) { 1721da177e4SLinus Torvalds printk("mpoa: atm_mpoa_add_qos: out of memory\n"); 1731da177e4SLinus Torvalds return entry; 1741da177e4SLinus Torvalds } 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds entry->ipaddr = dst_ip; 1771da177e4SLinus Torvalds entry->qos = *qos; 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds entry->next = qos_head; 1801da177e4SLinus Torvalds qos_head = entry; 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds return entry; 1831da177e4SLinus Torvalds } 1841da177e4SLinus Torvalds 18530d492daSAl Viro struct atm_mpoa_qos *atm_mpoa_search_qos(__be32 dst_ip) 1861da177e4SLinus Torvalds { 1871da177e4SLinus Torvalds struct atm_mpoa_qos *qos; 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvalds qos = qos_head; 1901da177e4SLinus Torvalds while( qos != NULL ){ 1911da177e4SLinus Torvalds if(qos->ipaddr == dst_ip) { 1921da177e4SLinus Torvalds break; 1931da177e4SLinus Torvalds } 1941da177e4SLinus Torvalds qos = qos->next; 1951da177e4SLinus Torvalds } 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds return qos; 1981da177e4SLinus Torvalds } 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds /* 2011da177e4SLinus Torvalds * Returns 0 for failure 2021da177e4SLinus Torvalds */ 2031da177e4SLinus Torvalds int atm_mpoa_delete_qos(struct atm_mpoa_qos *entry) 2041da177e4SLinus Torvalds { 2051da177e4SLinus Torvalds 2061da177e4SLinus Torvalds struct atm_mpoa_qos *curr; 2071da177e4SLinus Torvalds 2081da177e4SLinus Torvalds if (entry == NULL) return 0; 2091da177e4SLinus Torvalds if (entry == qos_head) { 2101da177e4SLinus Torvalds qos_head = qos_head->next; 2111da177e4SLinus Torvalds kfree(entry); 2121da177e4SLinus Torvalds return 1; 2131da177e4SLinus Torvalds } 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds curr = qos_head; 2161da177e4SLinus Torvalds while (curr != NULL) { 2171da177e4SLinus Torvalds if (curr->next == entry) { 2181da177e4SLinus Torvalds curr->next = entry->next; 2191da177e4SLinus Torvalds kfree(entry); 2201da177e4SLinus Torvalds return 1; 2211da177e4SLinus Torvalds } 2221da177e4SLinus Torvalds curr = curr->next; 2231da177e4SLinus Torvalds } 2241da177e4SLinus Torvalds 2251da177e4SLinus Torvalds return 0; 2261da177e4SLinus Torvalds } 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds /* this is buggered - we need locking for qos_head */ 2291da177e4SLinus Torvalds void atm_mpoa_disp_qos(struct seq_file *m) 2301da177e4SLinus Torvalds { 2311da177e4SLinus Torvalds struct atm_mpoa_qos *qos; 2321da177e4SLinus Torvalds 2331da177e4SLinus Torvalds qos = qos_head; 2341da177e4SLinus Torvalds seq_printf(m, "QoS entries for shortcuts:\n"); 2351da177e4SLinus Torvalds seq_printf(m, "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"); 2361da177e4SLinus Torvalds 2371da177e4SLinus Torvalds while (qos != NULL) { 23821454aaaSHarvey Harrison seq_printf(m, "%pI4\n %-7d %-7d %-7d %-7d %-7d\n %-7d %-7d %-7d %-7d %-7d\n", 23921454aaaSHarvey Harrison &qos->ipaddr, 2401da177e4SLinus Torvalds qos->qos.txtp.max_pcr, qos->qos.txtp.pcr, qos->qos.txtp.min_pcr, qos->qos.txtp.max_cdv, qos->qos.txtp.max_sdu, 2411da177e4SLinus Torvalds qos->qos.rxtp.max_pcr, qos->qos.rxtp.pcr, qos->qos.rxtp.min_pcr, qos->qos.rxtp.max_cdv, qos->qos.rxtp.max_sdu); 2421da177e4SLinus Torvalds qos = qos->next; 2431da177e4SLinus Torvalds } 2441da177e4SLinus Torvalds } 2451da177e4SLinus Torvalds 2461da177e4SLinus Torvalds static struct net_device *find_lec_by_itfnum(int itf) 2471da177e4SLinus Torvalds { 2481da177e4SLinus Torvalds struct net_device *dev; 2491da177e4SLinus Torvalds char name[IFNAMSIZ]; 2501da177e4SLinus Torvalds 2511da177e4SLinus Torvalds sprintf(name, "lec%d", itf); 252881d966bSEric W. Biederman dev = dev_get_by_name(&init_net, name); 2531da177e4SLinus Torvalds 2541da177e4SLinus Torvalds return dev; 2551da177e4SLinus Torvalds } 2561da177e4SLinus Torvalds 2571da177e4SLinus Torvalds static struct mpoa_client *alloc_mpc(void) 2581da177e4SLinus Torvalds { 2591da177e4SLinus Torvalds struct mpoa_client *mpc; 2601da177e4SLinus Torvalds 2610da974f4SPanagiotis Issaris mpc = kzalloc(sizeof (struct mpoa_client), GFP_KERNEL); 2621da177e4SLinus Torvalds if (mpc == NULL) 2631da177e4SLinus Torvalds return NULL; 2641da177e4SLinus Torvalds rwlock_init(&mpc->ingress_lock); 2651da177e4SLinus Torvalds rwlock_init(&mpc->egress_lock); 2661da177e4SLinus Torvalds mpc->next = mpcs; 2671da177e4SLinus Torvalds atm_mpoa_init_cache(mpc); 2681da177e4SLinus Torvalds 2691da177e4SLinus Torvalds mpc->parameters.mpc_p1 = MPC_P1; 2701da177e4SLinus Torvalds mpc->parameters.mpc_p2 = MPC_P2; 2711da177e4SLinus Torvalds memset(mpc->parameters.mpc_p3,0,sizeof(mpc->parameters.mpc_p3)); 2721da177e4SLinus Torvalds mpc->parameters.mpc_p4 = MPC_P4; 2731da177e4SLinus Torvalds mpc->parameters.mpc_p5 = MPC_P5; 2741da177e4SLinus Torvalds mpc->parameters.mpc_p6 = MPC_P6; 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds mpcs = mpc; 2771da177e4SLinus Torvalds 2781da177e4SLinus Torvalds return mpc; 2791da177e4SLinus Torvalds } 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds /* 2821da177e4SLinus Torvalds * 2831da177e4SLinus Torvalds * start_mpc() puts the MPC on line. All the packets destined 2841da177e4SLinus Torvalds * to the lec underneath us are now being monitored and 2851da177e4SLinus Torvalds * shortcuts will be established. 2861da177e4SLinus Torvalds * 2871da177e4SLinus Torvalds */ 2881da177e4SLinus Torvalds static void start_mpc(struct mpoa_client *mpc, struct net_device *dev) 2891da177e4SLinus Torvalds { 2901da177e4SLinus Torvalds 2911da177e4SLinus Torvalds dprintk("mpoa: (%s) start_mpc:\n", mpc->dev->name); 292788dee0aSStephen Hemminger if (!dev->netdev_ops) 293788dee0aSStephen Hemminger printk("mpoa: (%s) start_mpc not starting\n", dev->name); 294788dee0aSStephen Hemminger else { 295788dee0aSStephen Hemminger mpc->old_ops = dev->netdev_ops; 296788dee0aSStephen Hemminger mpc->new_ops = *mpc->old_ops; 297788dee0aSStephen Hemminger mpc->new_ops.ndo_start_xmit = mpc_send_packet; 298788dee0aSStephen Hemminger dev->netdev_ops = &mpc->new_ops; 2991da177e4SLinus Torvalds } 3001da177e4SLinus Torvalds } 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds static void stop_mpc(struct mpoa_client *mpc) 3031da177e4SLinus Torvalds { 304788dee0aSStephen Hemminger struct net_device *dev = mpc->dev; 3051da177e4SLinus Torvalds dprintk("mpoa: (%s) stop_mpc:", mpc->dev->name); 3061da177e4SLinus Torvalds 3071da177e4SLinus Torvalds /* Lets not nullify lec device's dev->hard_start_xmit */ 308788dee0aSStephen Hemminger if (dev->netdev_ops != &mpc->new_ops) { 3091da177e4SLinus Torvalds dprintk(" mpc already stopped, not fatal\n"); 3101da177e4SLinus Torvalds return; 3111da177e4SLinus Torvalds } 3121da177e4SLinus Torvalds dprintk("\n"); 3131da177e4SLinus Torvalds 314788dee0aSStephen Hemminger dev->netdev_ops = mpc->old_ops; 315788dee0aSStephen Hemminger mpc->old_ops = NULL; 316788dee0aSStephen Hemminger 317788dee0aSStephen Hemminger /* close_shortcuts(mpc); ??? FIXME */ 3181da177e4SLinus Torvalds } 3191da177e4SLinus Torvalds 3201da177e4SLinus Torvalds static const char *mpoa_device_type_string(char type) __attribute__ ((unused)); 3211da177e4SLinus Torvalds 3221da177e4SLinus Torvalds static const char *mpoa_device_type_string(char type) 3231da177e4SLinus Torvalds { 3241da177e4SLinus Torvalds switch(type) { 3251da177e4SLinus Torvalds case NON_MPOA: 3261da177e4SLinus Torvalds return "non-MPOA device"; 3271da177e4SLinus Torvalds break; 3281da177e4SLinus Torvalds case MPS: 3291da177e4SLinus Torvalds return "MPS"; 3301da177e4SLinus Torvalds break; 3311da177e4SLinus Torvalds case MPC: 3321da177e4SLinus Torvalds return "MPC"; 3331da177e4SLinus Torvalds break; 3341da177e4SLinus Torvalds case MPS_AND_MPC: 3351da177e4SLinus Torvalds return "both MPS and MPC"; 3361da177e4SLinus Torvalds break; 3371da177e4SLinus Torvalds default: 3381da177e4SLinus Torvalds return "unspecified (non-MPOA) device"; 3391da177e4SLinus Torvalds break; 3401da177e4SLinus Torvalds } 3411da177e4SLinus Torvalds 3421da177e4SLinus Torvalds return ""; /* not reached */ 3431da177e4SLinus Torvalds } 3441da177e4SLinus Torvalds 3451da177e4SLinus Torvalds /* 346b74ca3a8SWang Chen * lec device calls this via its netdev_priv(dev)->lane2_ops 347b74ca3a8SWang Chen * ->associate_indicator() when it sees a TLV in LE_ARP packet. 3481da177e4SLinus Torvalds * We fill in the pointer above when we see a LANE2 lec initializing 3491da177e4SLinus Torvalds * See LANE2 spec 3.1.5 3501da177e4SLinus Torvalds * 3511da177e4SLinus Torvalds * Quite a big and ugly function but when you look at it 3521da177e4SLinus Torvalds * all it does is to try to locate and parse MPOA Device 3531da177e4SLinus Torvalds * Type TLV. 3541da177e4SLinus Torvalds * We give our lec a pointer to this function and when the 3551da177e4SLinus Torvalds * lec sees a TLV it uses the pointer to call this function. 3561da177e4SLinus Torvalds * 3571da177e4SLinus Torvalds */ 358cba5cbd1SDavid Howells static void lane2_assoc_ind(struct net_device *dev, const u8 *mac_addr, 359cba5cbd1SDavid Howells const u8 *tlvs, u32 sizeoftlvs) 3601da177e4SLinus Torvalds { 3611da177e4SLinus Torvalds uint32_t type; 3621da177e4SLinus Torvalds uint8_t length, mpoa_device_type, number_of_mps_macs; 363cba5cbd1SDavid Howells const uint8_t *end_of_tlvs; 3641da177e4SLinus Torvalds struct mpoa_client *mpc; 3651da177e4SLinus Torvalds 3661da177e4SLinus Torvalds mpoa_device_type = number_of_mps_macs = 0; /* silence gcc */ 3671da177e4SLinus Torvalds dprintk("mpoa: (%s) lane2_assoc_ind: received TLV(s), ", dev->name); 3681da177e4SLinus Torvalds dprintk("total length of all TLVs %d\n", sizeoftlvs); 3691da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); /* Sampo-Fix: moved here from below */ 3701da177e4SLinus Torvalds if (mpc == NULL) { 3711da177e4SLinus Torvalds printk("mpoa: (%s) lane2_assoc_ind: no mpc\n", dev->name); 3721da177e4SLinus Torvalds return; 3731da177e4SLinus Torvalds } 3741da177e4SLinus Torvalds end_of_tlvs = tlvs + sizeoftlvs; 3751da177e4SLinus Torvalds while (end_of_tlvs - tlvs >= 5) { 3761da177e4SLinus Torvalds type = (tlvs[0] << 24) | (tlvs[1] << 16) | (tlvs[2] << 8) | tlvs[3]; 3771da177e4SLinus Torvalds length = tlvs[4]; 3781da177e4SLinus Torvalds tlvs += 5; 3791da177e4SLinus Torvalds dprintk(" type 0x%x length %02x\n", type, length); 3801da177e4SLinus Torvalds if (tlvs + length > end_of_tlvs) { 3811da177e4SLinus Torvalds printk("TLV value extends past its buffer, aborting parse\n"); 3821da177e4SLinus Torvalds return; 3831da177e4SLinus Torvalds } 3841da177e4SLinus Torvalds 3851da177e4SLinus Torvalds if (type == 0) { 3861da177e4SLinus Torvalds printk("mpoa: (%s) lane2_assoc_ind: TLV type was 0, returning\n", dev->name); 3871da177e4SLinus Torvalds return; 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds 3901da177e4SLinus Torvalds if (type != TLV_MPOA_DEVICE_TYPE) { 3911da177e4SLinus Torvalds tlvs += length; 3921da177e4SLinus Torvalds continue; /* skip other TLVs */ 3931da177e4SLinus Torvalds } 3941da177e4SLinus Torvalds mpoa_device_type = *tlvs++; 3951da177e4SLinus Torvalds number_of_mps_macs = *tlvs++; 3961da177e4SLinus Torvalds dprintk("mpoa: (%s) MPOA device type '%s', ", dev->name, mpoa_device_type_string(mpoa_device_type)); 3971da177e4SLinus Torvalds if (mpoa_device_type == MPS_AND_MPC && 3981da177e4SLinus Torvalds length < (42 + number_of_mps_macs*ETH_ALEN)) { /* :) */ 3991da177e4SLinus Torvalds printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", 4001da177e4SLinus Torvalds dev->name); 4011da177e4SLinus Torvalds continue; 4021da177e4SLinus Torvalds } 4031da177e4SLinus Torvalds if ((mpoa_device_type == MPS || mpoa_device_type == MPC) 4041da177e4SLinus Torvalds && length < 22 + number_of_mps_macs*ETH_ALEN) { 4051da177e4SLinus Torvalds printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", 4061da177e4SLinus Torvalds dev->name); 4071da177e4SLinus Torvalds continue; 4081da177e4SLinus Torvalds } 4091da177e4SLinus Torvalds if (mpoa_device_type != MPS && mpoa_device_type != MPS_AND_MPC) { 4101da177e4SLinus Torvalds dprintk("ignoring non-MPS device\n"); 4111da177e4SLinus Torvalds if (mpoa_device_type == MPC) tlvs += 20; 4121da177e4SLinus Torvalds continue; /* we are only interested in MPSs */ 4131da177e4SLinus Torvalds } 4141da177e4SLinus Torvalds if (number_of_mps_macs == 0 && mpoa_device_type == MPS_AND_MPC) { 4151da177e4SLinus Torvalds printk("\nmpoa: (%s) lane2_assoc_ind: MPS_AND_MPC has zero MACs\n", dev->name); 4161da177e4SLinus Torvalds continue; /* someone should read the spec */ 4171da177e4SLinus Torvalds } 4181da177e4SLinus Torvalds dprintk("this MPS has %d MAC addresses\n", number_of_mps_macs); 4191da177e4SLinus Torvalds 4201da177e4SLinus Torvalds /* ok, now we can go and tell our daemon the control address of MPS */ 4211da177e4SLinus Torvalds send_set_mps_ctrl_addr(tlvs, mpc); 4221da177e4SLinus Torvalds 4231da177e4SLinus Torvalds tlvs = copy_macs(mpc, mac_addr, tlvs, number_of_mps_macs, mpoa_device_type); 4241da177e4SLinus Torvalds if (tlvs == NULL) return; 4251da177e4SLinus Torvalds } 4261da177e4SLinus Torvalds if (end_of_tlvs - tlvs != 0) 4271da177e4SLinus Torvalds printk("mpoa: (%s) lane2_assoc_ind: ignoring %Zd bytes of trailing TLV carbage\n", 4281da177e4SLinus Torvalds dev->name, end_of_tlvs - tlvs); 4291da177e4SLinus Torvalds return; 4301da177e4SLinus Torvalds } 4311da177e4SLinus Torvalds 4321da177e4SLinus Torvalds /* 4331da177e4SLinus Torvalds * Store at least advertizing router's MAC address 4341da177e4SLinus Torvalds * plus the possible MAC address(es) to mpc->mps_macs. 4351da177e4SLinus Torvalds * For a freshly allocated MPOA client mpc->mps_macs == 0. 4361da177e4SLinus Torvalds */ 437cba5cbd1SDavid Howells static const uint8_t *copy_macs(struct mpoa_client *mpc, 438cba5cbd1SDavid Howells const uint8_t *router_mac, 439cba5cbd1SDavid Howells const uint8_t *tlvs, uint8_t mps_macs, 440cba5cbd1SDavid Howells uint8_t device_type) 4411da177e4SLinus Torvalds { 4421da177e4SLinus Torvalds int num_macs; 4431da177e4SLinus Torvalds num_macs = (mps_macs > 1) ? mps_macs : 1; 4441da177e4SLinus Torvalds 4451da177e4SLinus Torvalds if (mpc->number_of_mps_macs != num_macs) { /* need to reallocate? */ 4461da177e4SLinus Torvalds if (mpc->number_of_mps_macs != 0) kfree(mpc->mps_macs); 4471da177e4SLinus Torvalds mpc->number_of_mps_macs = 0; 4481da177e4SLinus Torvalds mpc->mps_macs = kmalloc(num_macs*ETH_ALEN, GFP_KERNEL); 4491da177e4SLinus Torvalds if (mpc->mps_macs == NULL) { 4501da177e4SLinus Torvalds printk("mpoa: (%s) copy_macs: out of mem\n", mpc->dev->name); 4511da177e4SLinus Torvalds return NULL; 4521da177e4SLinus Torvalds } 4531da177e4SLinus Torvalds } 4541da177e4SLinus Torvalds memcpy(mpc->mps_macs, router_mac, ETH_ALEN); 4551da177e4SLinus Torvalds tlvs += 20; if (device_type == MPS_AND_MPC) tlvs += 20; 4561da177e4SLinus Torvalds if (mps_macs > 0) 4571da177e4SLinus Torvalds memcpy(mpc->mps_macs, tlvs, mps_macs*ETH_ALEN); 4581da177e4SLinus Torvalds tlvs += mps_macs*ETH_ALEN; 4591da177e4SLinus Torvalds mpc->number_of_mps_macs = num_macs; 4601da177e4SLinus Torvalds 4611da177e4SLinus Torvalds return tlvs; 4621da177e4SLinus Torvalds } 4631da177e4SLinus Torvalds 4641da177e4SLinus Torvalds static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc) 4651da177e4SLinus Torvalds { 4661da177e4SLinus Torvalds in_cache_entry *entry; 4671da177e4SLinus Torvalds struct iphdr *iph; 4681da177e4SLinus Torvalds char *buff; 46930d492daSAl Viro __be32 ipaddr = 0; 4701da177e4SLinus Torvalds 4711da177e4SLinus Torvalds static struct { 4721da177e4SLinus Torvalds struct llc_snap_hdr hdr; 47330d492daSAl Viro __be32 tag; 4741da177e4SLinus Torvalds } tagged_llc_snap_hdr = { 4751da177e4SLinus Torvalds {0xaa, 0xaa, 0x03, {0x00, 0x00, 0x00}, {0x88, 0x4c}}, 4761da177e4SLinus Torvalds 0 4771da177e4SLinus Torvalds }; 4781da177e4SLinus Torvalds 4791da177e4SLinus Torvalds buff = skb->data + mpc->dev->hard_header_len; 4801da177e4SLinus Torvalds iph = (struct iphdr *)buff; 4811da177e4SLinus Torvalds ipaddr = iph->daddr; 4821da177e4SLinus Torvalds 4831da177e4SLinus Torvalds ddprintk("mpoa: (%s) send_via_shortcut: ipaddr 0x%x\n", mpc->dev->name, ipaddr); 4841da177e4SLinus Torvalds 4851da177e4SLinus Torvalds entry = mpc->in_ops->get(ipaddr, mpc); 4861da177e4SLinus Torvalds if (entry == NULL) { 4871da177e4SLinus Torvalds entry = mpc->in_ops->add_entry(ipaddr, mpc); 4881da177e4SLinus Torvalds if (entry != NULL) mpc->in_ops->put(entry); 4891da177e4SLinus Torvalds return 1; 4901da177e4SLinus Torvalds } 4911da177e4SLinus Torvalds if (mpc->in_ops->cache_hit(entry, mpc) != OPEN){ /* threshold not exceeded or VCC not ready */ 4921da177e4SLinus Torvalds ddprintk("mpoa: (%s) send_via_shortcut: cache_hit: returns != OPEN\n", mpc->dev->name); 4931da177e4SLinus Torvalds mpc->in_ops->put(entry); 4941da177e4SLinus Torvalds return 1; 4951da177e4SLinus Torvalds } 4961da177e4SLinus Torvalds 4971da177e4SLinus Torvalds ddprintk("mpoa: (%s) send_via_shortcut: using shortcut\n", mpc->dev->name); 4981da177e4SLinus Torvalds /* MPOA spec A.1.4, MPOA client must decrement IP ttl at least by one */ 4991da177e4SLinus Torvalds if (iph->ttl <= 1) { 5001da177e4SLinus Torvalds ddprintk("mpoa: (%s) send_via_shortcut: IP ttl = %u, using LANE\n", mpc->dev->name, iph->ttl); 5011da177e4SLinus Torvalds mpc->in_ops->put(entry); 5021da177e4SLinus Torvalds return 1; 5031da177e4SLinus Torvalds } 5041da177e4SLinus Torvalds iph->ttl--; 5051da177e4SLinus Torvalds iph->check = 0; 5061da177e4SLinus Torvalds iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); 5071da177e4SLinus Torvalds 5081da177e4SLinus Torvalds if (entry->ctrl_info.tag != 0) { 5091da177e4SLinus Torvalds ddprintk("mpoa: (%s) send_via_shortcut: adding tag 0x%x\n", mpc->dev->name, entry->ctrl_info.tag); 5101da177e4SLinus Torvalds tagged_llc_snap_hdr.tag = entry->ctrl_info.tag; 5111da177e4SLinus Torvalds skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ 5121da177e4SLinus Torvalds skb_push(skb, sizeof(tagged_llc_snap_hdr)); /* add LLC/SNAP header */ 51327d7ff46SArnaldo Carvalho de Melo skb_copy_to_linear_data(skb, &tagged_llc_snap_hdr, 51427d7ff46SArnaldo Carvalho de Melo sizeof(tagged_llc_snap_hdr)); 5151da177e4SLinus Torvalds } else { 5161da177e4SLinus Torvalds skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ 5171da177e4SLinus Torvalds skb_push(skb, sizeof(struct llc_snap_hdr)); /* add LLC/SNAP header + tag */ 51827d7ff46SArnaldo Carvalho de Melo skb_copy_to_linear_data(skb, &llc_snap_mpoa_data, 51927d7ff46SArnaldo Carvalho de Melo sizeof(struct llc_snap_hdr)); 5201da177e4SLinus Torvalds } 5211da177e4SLinus Torvalds 5221da177e4SLinus Torvalds atomic_add(skb->truesize, &sk_atm(entry->shortcut)->sk_wmem_alloc); 5231da177e4SLinus Torvalds ATM_SKB(skb)->atm_options = entry->shortcut->atm_options; 5241da177e4SLinus Torvalds entry->shortcut->send(entry->shortcut, skb); 5251da177e4SLinus Torvalds entry->packets_fwded++; 5261da177e4SLinus Torvalds mpc->in_ops->put(entry); 5271da177e4SLinus Torvalds 5281da177e4SLinus Torvalds return 0; 5291da177e4SLinus Torvalds } 5301da177e4SLinus Torvalds 5311da177e4SLinus Torvalds /* 5321da177e4SLinus Torvalds * Probably needs some error checks and locking, not sure... 5331da177e4SLinus Torvalds */ 5343c805a22SStephen Hemminger static netdev_tx_t mpc_send_packet(struct sk_buff *skb, 5353c805a22SStephen Hemminger struct net_device *dev) 5361da177e4SLinus Torvalds { 5371da177e4SLinus Torvalds struct mpoa_client *mpc; 5381da177e4SLinus Torvalds struct ethhdr *eth; 5391da177e4SLinus Torvalds int i = 0; 5401da177e4SLinus Torvalds 5411da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); /* this should NEVER fail */ 5421da177e4SLinus Torvalds if(mpc == NULL) { 5431da177e4SLinus Torvalds printk("mpoa: (%s) mpc_send_packet: no MPC found\n", dev->name); 5441da177e4SLinus Torvalds goto non_ip; 5451da177e4SLinus Torvalds } 5461da177e4SLinus Torvalds 5471da177e4SLinus Torvalds eth = (struct ethhdr *)skb->data; 5481da177e4SLinus Torvalds if (eth->h_proto != htons(ETH_P_IP)) 5491da177e4SLinus Torvalds goto non_ip; /* Multi-Protocol Over ATM :-) */ 5501da177e4SLinus Torvalds 5511c9b7aa1SHerbert Xu /* Weed out funny packets (e.g., AF_PACKET or raw). */ 5521c9b7aa1SHerbert Xu if (skb->len < ETH_HLEN + sizeof(struct iphdr)) 5531c9b7aa1SHerbert Xu goto non_ip; 5541c9b7aa1SHerbert Xu skb_set_network_header(skb, ETH_HLEN); 5551c9b7aa1SHerbert Xu if (skb->len < ETH_HLEN + ip_hdr(skb)->ihl * 4 || ip_hdr(skb)->ihl < 5) 5561c9b7aa1SHerbert Xu goto non_ip; 5571c9b7aa1SHerbert Xu 5581da177e4SLinus Torvalds while (i < mpc->number_of_mps_macs) { 559d3f4a687SKris Katterjohn if (!compare_ether_addr(eth->h_dest, (mpc->mps_macs + i*ETH_ALEN))) 5601da177e4SLinus Torvalds if ( send_via_shortcut(skb, mpc) == 0 ) /* try shortcut */ 561ec634fe3SPatrick McHardy return NETDEV_TX_OK; /* success! */ 5621da177e4SLinus Torvalds i++; 5631da177e4SLinus Torvalds } 5641da177e4SLinus Torvalds 5651da177e4SLinus Torvalds non_ip: 566788dee0aSStephen Hemminger return mpc->old_ops->ndo_start_xmit(skb,dev); 5671da177e4SLinus Torvalds } 5681da177e4SLinus Torvalds 5691da177e4SLinus Torvalds static int atm_mpoa_vcc_attach(struct atm_vcc *vcc, void __user *arg) 5701da177e4SLinus Torvalds { 5711da177e4SLinus Torvalds int bytes_left; 5721da177e4SLinus Torvalds struct mpoa_client *mpc; 5731da177e4SLinus Torvalds struct atmmpc_ioc ioc_data; 5741da177e4SLinus Torvalds in_cache_entry *in_entry; 57530d492daSAl Viro __be32 ipaddr; 5761da177e4SLinus Torvalds 5771da177e4SLinus Torvalds bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmmpc_ioc)); 5781da177e4SLinus Torvalds if (bytes_left != 0) { 5791da177e4SLinus Torvalds printk("mpoa: mpc_vcc_attach: Short read (missed %d bytes) from userland\n", bytes_left); 5801da177e4SLinus Torvalds return -EFAULT; 5811da177e4SLinus Torvalds } 5821da177e4SLinus Torvalds ipaddr = ioc_data.ipaddr; 5831da177e4SLinus Torvalds if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF) 5841da177e4SLinus Torvalds return -EINVAL; 5851da177e4SLinus Torvalds 5861da177e4SLinus Torvalds mpc = find_mpc_by_itfnum(ioc_data.dev_num); 5871da177e4SLinus Torvalds if (mpc == NULL) 5881da177e4SLinus Torvalds return -EINVAL; 5891da177e4SLinus Torvalds 5901da177e4SLinus Torvalds if (ioc_data.type == MPC_SOCKET_INGRESS) { 5911da177e4SLinus Torvalds in_entry = mpc->in_ops->get(ipaddr, mpc); 5921da177e4SLinus Torvalds if (in_entry == NULL || in_entry->entry_state < INGRESS_RESOLVED) { 5931da177e4SLinus Torvalds printk("mpoa: (%s) mpc_vcc_attach: did not find RESOLVED entry from ingress cache\n", 5941da177e4SLinus Torvalds mpc->dev->name); 5951da177e4SLinus Torvalds if (in_entry != NULL) mpc->in_ops->put(in_entry); 5961da177e4SLinus Torvalds return -EINVAL; 5971da177e4SLinus Torvalds } 59821454aaaSHarvey Harrison printk("mpoa: (%s) mpc_vcc_attach: attaching ingress SVC, entry = %pI4\n", 59921454aaaSHarvey Harrison mpc->dev->name, &in_entry->ctrl_info.in_dst_ip); 6001da177e4SLinus Torvalds in_entry->shortcut = vcc; 6011da177e4SLinus Torvalds mpc->in_ops->put(in_entry); 6021da177e4SLinus Torvalds } else { 6031da177e4SLinus Torvalds printk("mpoa: (%s) mpc_vcc_attach: attaching egress SVC\n", mpc->dev->name); 6041da177e4SLinus Torvalds } 6051da177e4SLinus Torvalds 6061da177e4SLinus Torvalds vcc->proto_data = mpc->dev; 6071da177e4SLinus Torvalds vcc->push = mpc_push; 6081da177e4SLinus Torvalds 6091da177e4SLinus Torvalds return 0; 6101da177e4SLinus Torvalds } 6111da177e4SLinus Torvalds 6121da177e4SLinus Torvalds /* 6131da177e4SLinus Torvalds * 6141da177e4SLinus Torvalds */ 6151da177e4SLinus Torvalds static void mpc_vcc_close(struct atm_vcc *vcc, struct net_device *dev) 6161da177e4SLinus Torvalds { 6171da177e4SLinus Torvalds struct mpoa_client *mpc; 6181da177e4SLinus Torvalds in_cache_entry *in_entry; 6191da177e4SLinus Torvalds eg_cache_entry *eg_entry; 6201da177e4SLinus Torvalds 6211da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); 6221da177e4SLinus Torvalds if (mpc == NULL) { 6231da177e4SLinus Torvalds printk("mpoa: (%s) mpc_vcc_close: close for unknown MPC\n", dev->name); 6241da177e4SLinus Torvalds return; 6251da177e4SLinus Torvalds } 6261da177e4SLinus Torvalds 6271da177e4SLinus Torvalds dprintk("mpoa: (%s) mpc_vcc_close:\n", dev->name); 6281da177e4SLinus Torvalds in_entry = mpc->in_ops->get_by_vcc(vcc, mpc); 6291da177e4SLinus Torvalds if (in_entry) { 63021454aaaSHarvey Harrison dprintk("mpoa: (%s) mpc_vcc_close: ingress SVC closed ip = %pI4\n", 63121454aaaSHarvey Harrison mpc->dev->name, &in_entry->ctrl_info.in_dst_ip); 6321da177e4SLinus Torvalds in_entry->shortcut = NULL; 6331da177e4SLinus Torvalds mpc->in_ops->put(in_entry); 6341da177e4SLinus Torvalds } 6351da177e4SLinus Torvalds eg_entry = mpc->eg_ops->get_by_vcc(vcc, mpc); 6361da177e4SLinus Torvalds if (eg_entry) { 6371da177e4SLinus Torvalds dprintk("mpoa: (%s) mpc_vcc_close: egress SVC closed\n", mpc->dev->name); 6381da177e4SLinus Torvalds eg_entry->shortcut = NULL; 6391da177e4SLinus Torvalds mpc->eg_ops->put(eg_entry); 6401da177e4SLinus Torvalds } 6411da177e4SLinus Torvalds 6421da177e4SLinus Torvalds if (in_entry == NULL && eg_entry == NULL) 6431da177e4SLinus Torvalds dprintk("mpoa: (%s) mpc_vcc_close: unused vcc closed\n", dev->name); 6441da177e4SLinus Torvalds 6451da177e4SLinus Torvalds return; 6461da177e4SLinus Torvalds } 6471da177e4SLinus Torvalds 6481da177e4SLinus Torvalds static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb) 6491da177e4SLinus Torvalds { 6501da177e4SLinus Torvalds struct net_device *dev = (struct net_device *)vcc->proto_data; 6511da177e4SLinus Torvalds struct sk_buff *new_skb; 6521da177e4SLinus Torvalds eg_cache_entry *eg; 6531da177e4SLinus Torvalds struct mpoa_client *mpc; 65430d492daSAl Viro __be32 tag; 6551da177e4SLinus Torvalds char *tmp; 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvalds ddprintk("mpoa: (%s) mpc_push:\n", dev->name); 6581da177e4SLinus Torvalds if (skb == NULL) { 6591da177e4SLinus Torvalds dprintk("mpoa: (%s) mpc_push: null skb, closing VCC\n", dev->name); 6601da177e4SLinus Torvalds mpc_vcc_close(vcc, dev); 6611da177e4SLinus Torvalds return; 6621da177e4SLinus Torvalds } 6631da177e4SLinus Torvalds 6641da177e4SLinus Torvalds skb->dev = dev; 6651da177e4SLinus Torvalds if (memcmp(skb->data, &llc_snap_mpoa_ctrl, sizeof(struct llc_snap_hdr)) == 0) { 6661da177e4SLinus Torvalds struct sock *sk = sk_atm(vcc); 6671da177e4SLinus Torvalds 6681da177e4SLinus Torvalds dprintk("mpoa: (%s) mpc_push: control packet arrived\n", dev->name); 6691da177e4SLinus Torvalds /* Pass control packets to daemon */ 6701da177e4SLinus Torvalds skb_queue_tail(&sk->sk_receive_queue, skb); 6711da177e4SLinus Torvalds sk->sk_data_ready(sk, skb->len); 6721da177e4SLinus Torvalds return; 6731da177e4SLinus Torvalds } 6741da177e4SLinus Torvalds 6751da177e4SLinus Torvalds /* data coming over the shortcut */ 6761da177e4SLinus Torvalds atm_return(vcc, skb->truesize); 6771da177e4SLinus Torvalds 6781da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); 6791da177e4SLinus Torvalds if (mpc == NULL) { 6801da177e4SLinus Torvalds printk("mpoa: (%s) mpc_push: unknown MPC\n", dev->name); 6811da177e4SLinus Torvalds return; 6821da177e4SLinus Torvalds } 6831da177e4SLinus Torvalds 6841da177e4SLinus Torvalds if (memcmp(skb->data, &llc_snap_mpoa_data_tagged, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA tagged data */ 6851da177e4SLinus Torvalds ddprintk("mpoa: (%s) mpc_push: tagged data packet arrived\n", dev->name); 6861da177e4SLinus Torvalds 6871da177e4SLinus Torvalds } else if (memcmp(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA data */ 6881da177e4SLinus Torvalds printk("mpoa: (%s) mpc_push: non-tagged data packet arrived\n", dev->name); 6891da177e4SLinus Torvalds printk(" mpc_push: non-tagged data unsupported, purging\n"); 6901da177e4SLinus Torvalds dev_kfree_skb_any(skb); 6911da177e4SLinus Torvalds return; 6921da177e4SLinus Torvalds } else { 6931da177e4SLinus Torvalds printk("mpoa: (%s) mpc_push: garbage arrived, purging\n", dev->name); 6941da177e4SLinus Torvalds dev_kfree_skb_any(skb); 6951da177e4SLinus Torvalds return; 6961da177e4SLinus Torvalds } 6971da177e4SLinus Torvalds 6981da177e4SLinus Torvalds tmp = skb->data + sizeof(struct llc_snap_hdr); 69930d492daSAl Viro tag = *(__be32 *)tmp; 7001da177e4SLinus Torvalds 7011da177e4SLinus Torvalds eg = mpc->eg_ops->get_by_tag(tag, mpc); 7021da177e4SLinus Torvalds if (eg == NULL) { 7031da177e4SLinus Torvalds printk("mpoa: (%s) mpc_push: Didn't find egress cache entry, tag = %u\n", 7041da177e4SLinus Torvalds dev->name,tag); 7051da177e4SLinus Torvalds purge_egress_shortcut(vcc, NULL); 7061da177e4SLinus Torvalds dev_kfree_skb_any(skb); 7071da177e4SLinus Torvalds return; 7081da177e4SLinus Torvalds } 7091da177e4SLinus Torvalds 7101da177e4SLinus Torvalds /* 7111da177e4SLinus Torvalds * See if ingress MPC is using shortcut we opened as a return channel. 7121da177e4SLinus Torvalds * This means we have a bi-directional vcc opened by us. 7131da177e4SLinus Torvalds */ 7141da177e4SLinus Torvalds if (eg->shortcut == NULL) { 7151da177e4SLinus Torvalds eg->shortcut = vcc; 7161da177e4SLinus Torvalds printk("mpoa: (%s) mpc_push: egress SVC in use\n", dev->name); 7171da177e4SLinus Torvalds } 7181da177e4SLinus Torvalds 7191da177e4SLinus Torvalds skb_pull(skb, sizeof(struct llc_snap_hdr) + sizeof(tag)); /* get rid of LLC/SNAP header */ 7201da177e4SLinus Torvalds new_skb = skb_realloc_headroom(skb, eg->ctrl_info.DH_length); /* LLC/SNAP is shorter than MAC header :( */ 7211da177e4SLinus Torvalds dev_kfree_skb_any(skb); 7221da177e4SLinus Torvalds if (new_skb == NULL){ 7231da177e4SLinus Torvalds mpc->eg_ops->put(eg); 7241da177e4SLinus Torvalds return; 7251da177e4SLinus Torvalds } 7261da177e4SLinus Torvalds skb_push(new_skb, eg->ctrl_info.DH_length); /* add MAC header */ 72727d7ff46SArnaldo Carvalho de Melo skb_copy_to_linear_data(new_skb, eg->ctrl_info.DLL_header, 72827d7ff46SArnaldo Carvalho de Melo eg->ctrl_info.DH_length); 7291da177e4SLinus Torvalds new_skb->protocol = eth_type_trans(new_skb, dev); 730c1d2bbe1SArnaldo Carvalho de Melo skb_reset_network_header(new_skb); 7311da177e4SLinus Torvalds 732eddc9ec5SArnaldo Carvalho de Melo eg->latest_ip_addr = ip_hdr(new_skb)->saddr; 7331da177e4SLinus Torvalds eg->packets_rcvd++; 7341da177e4SLinus Torvalds mpc->eg_ops->put(eg); 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data)); 7371da177e4SLinus Torvalds netif_rx(new_skb); 7381da177e4SLinus Torvalds 7391da177e4SLinus Torvalds return; 7401da177e4SLinus Torvalds } 7411da177e4SLinus Torvalds 7421da177e4SLinus Torvalds static struct atmdev_ops mpc_ops = { /* only send is required */ 7431da177e4SLinus Torvalds .close = mpoad_close, 7441da177e4SLinus Torvalds .send = msg_from_mpoad 7451da177e4SLinus Torvalds }; 7461da177e4SLinus Torvalds 7471da177e4SLinus Torvalds static struct atm_dev mpc_dev = { 7481da177e4SLinus Torvalds .ops = &mpc_ops, 7491da177e4SLinus Torvalds .type = "mpc", 7501da177e4SLinus Torvalds .number = 42, 7514ef8d0aeSMilind Arun Choudhary .lock = __SPIN_LOCK_UNLOCKED(mpc_dev.lock) 7521da177e4SLinus Torvalds /* members not explicitly initialised will be 0 */ 7531da177e4SLinus Torvalds }; 7541da177e4SLinus Torvalds 7551da177e4SLinus Torvalds static int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg) 7561da177e4SLinus Torvalds { 7571da177e4SLinus Torvalds struct mpoa_client *mpc; 7581da177e4SLinus Torvalds struct lec_priv *priv; 7591da177e4SLinus Torvalds int err; 7601da177e4SLinus Torvalds 7611da177e4SLinus Torvalds if (mpcs == NULL) { 7621da177e4SLinus Torvalds init_timer(&mpc_timer); 7631da177e4SLinus Torvalds mpc_timer_refresh(); 7641da177e4SLinus Torvalds 7651da177e4SLinus Torvalds /* This lets us now how our LECs are doing */ 7661da177e4SLinus Torvalds err = register_netdevice_notifier(&mpoa_notifier); 7671da177e4SLinus Torvalds if (err < 0) { 7681da177e4SLinus Torvalds del_timer(&mpc_timer); 7691da177e4SLinus Torvalds return err; 7701da177e4SLinus Torvalds } 7711da177e4SLinus Torvalds } 7721da177e4SLinus Torvalds 7731da177e4SLinus Torvalds mpc = find_mpc_by_itfnum(arg); 7741da177e4SLinus Torvalds if (mpc == NULL) { 7751da177e4SLinus Torvalds dprintk("mpoa: mpoad_attach: allocating new mpc for itf %d\n", arg); 7761da177e4SLinus Torvalds mpc = alloc_mpc(); 7771da177e4SLinus Torvalds if (mpc == NULL) 7781da177e4SLinus Torvalds return -ENOMEM; 7791da177e4SLinus Torvalds mpc->dev_num = arg; 7801da177e4SLinus Torvalds mpc->dev = find_lec_by_itfnum(arg); /* NULL if there was no lec */ 7811da177e4SLinus Torvalds } 7821da177e4SLinus Torvalds if (mpc->mpoad_vcc) { 7831da177e4SLinus Torvalds printk("mpoa: mpoad_attach: mpoad is already present for itf %d\n", arg); 7841da177e4SLinus Torvalds return -EADDRINUSE; 7851da177e4SLinus Torvalds } 7861da177e4SLinus Torvalds 7871da177e4SLinus Torvalds if (mpc->dev) { /* check if the lec is LANE2 capable */ 788524ad0a7SWang Chen priv = netdev_priv(mpc->dev); 7891da177e4SLinus Torvalds if (priv->lane_version < 2) { 7901da177e4SLinus Torvalds dev_put(mpc->dev); 7911da177e4SLinus Torvalds mpc->dev = NULL; 7921da177e4SLinus Torvalds } else 7931da177e4SLinus Torvalds priv->lane2_ops->associate_indicator = lane2_assoc_ind; 7941da177e4SLinus Torvalds } 7951da177e4SLinus Torvalds 7961da177e4SLinus Torvalds mpc->mpoad_vcc = vcc; 7971da177e4SLinus Torvalds vcc->dev = &mpc_dev; 7981da177e4SLinus Torvalds vcc_insert_socket(sk_atm(vcc)); 7991da177e4SLinus Torvalds set_bit(ATM_VF_META,&vcc->flags); 8001da177e4SLinus Torvalds set_bit(ATM_VF_READY,&vcc->flags); 8011da177e4SLinus Torvalds 8021da177e4SLinus Torvalds if (mpc->dev) { 8031da177e4SLinus Torvalds char empty[ATM_ESA_LEN]; 8041da177e4SLinus Torvalds memset(empty, 0, ATM_ESA_LEN); 8051da177e4SLinus Torvalds 8061da177e4SLinus Torvalds start_mpc(mpc, mpc->dev); 8071da177e4SLinus Torvalds /* set address if mpcd e.g. gets killed and restarted. 8081da177e4SLinus Torvalds * If we do not do it now we have to wait for the next LE_ARP 8091da177e4SLinus Torvalds */ 8101da177e4SLinus Torvalds if ( memcmp(mpc->mps_ctrl_addr, empty, ATM_ESA_LEN) != 0 ) 8111da177e4SLinus Torvalds send_set_mps_ctrl_addr(mpc->mps_ctrl_addr, mpc); 8121da177e4SLinus Torvalds } 8131da177e4SLinus Torvalds 8141da177e4SLinus Torvalds __module_get(THIS_MODULE); 8151da177e4SLinus Torvalds return arg; 8161da177e4SLinus Torvalds } 8171da177e4SLinus Torvalds 818cba5cbd1SDavid Howells static void send_set_mps_ctrl_addr(const char *addr, struct mpoa_client *mpc) 8191da177e4SLinus Torvalds { 8201da177e4SLinus Torvalds struct k_message mesg; 8211da177e4SLinus Torvalds 8221da177e4SLinus Torvalds memcpy (mpc->mps_ctrl_addr, addr, ATM_ESA_LEN); 8231da177e4SLinus Torvalds 8241da177e4SLinus Torvalds mesg.type = SET_MPS_CTRL_ADDR; 8251da177e4SLinus Torvalds memcpy(mesg.MPS_ctrl, addr, ATM_ESA_LEN); 8261da177e4SLinus Torvalds msg_to_mpoad(&mesg, mpc); 8271da177e4SLinus Torvalds 8281da177e4SLinus Torvalds return; 8291da177e4SLinus Torvalds } 8301da177e4SLinus Torvalds 8311da177e4SLinus Torvalds static void mpoad_close(struct atm_vcc *vcc) 8321da177e4SLinus Torvalds { 8331da177e4SLinus Torvalds struct mpoa_client *mpc; 8341da177e4SLinus Torvalds struct sk_buff *skb; 8351da177e4SLinus Torvalds 8361da177e4SLinus Torvalds mpc = find_mpc_by_vcc(vcc); 8371da177e4SLinus Torvalds if (mpc == NULL) { 8381da177e4SLinus Torvalds printk("mpoa: mpoad_close: did not find MPC\n"); 8391da177e4SLinus Torvalds return; 8401da177e4SLinus Torvalds } 8411da177e4SLinus Torvalds if (!mpc->mpoad_vcc) { 8421da177e4SLinus Torvalds printk("mpoa: mpoad_close: close for non-present mpoad\n"); 8431da177e4SLinus Torvalds return; 8441da177e4SLinus Torvalds } 8451da177e4SLinus Torvalds 8461da177e4SLinus Torvalds mpc->mpoad_vcc = NULL; 8471da177e4SLinus Torvalds if (mpc->dev) { 848524ad0a7SWang Chen struct lec_priv *priv = netdev_priv(mpc->dev); 8491da177e4SLinus Torvalds priv->lane2_ops->associate_indicator = NULL; 8501da177e4SLinus Torvalds stop_mpc(mpc); 8511da177e4SLinus Torvalds dev_put(mpc->dev); 8521da177e4SLinus Torvalds } 8531da177e4SLinus Torvalds 8541da177e4SLinus Torvalds mpc->in_ops->destroy_cache(mpc); 8551da177e4SLinus Torvalds mpc->eg_ops->destroy_cache(mpc); 8561da177e4SLinus Torvalds 8571da177e4SLinus Torvalds while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue))) { 8581da177e4SLinus Torvalds atm_return(vcc, skb->truesize); 8591da177e4SLinus Torvalds kfree_skb(skb); 8601da177e4SLinus Torvalds } 8611da177e4SLinus Torvalds 8621da177e4SLinus Torvalds printk("mpoa: (%s) going down\n", 8631da177e4SLinus Torvalds (mpc->dev) ? mpc->dev->name : "<unknown>"); 8641da177e4SLinus Torvalds module_put(THIS_MODULE); 8651da177e4SLinus Torvalds 8661da177e4SLinus Torvalds return; 8671da177e4SLinus Torvalds } 8681da177e4SLinus Torvalds 8691da177e4SLinus Torvalds /* 8701da177e4SLinus Torvalds * 8711da177e4SLinus Torvalds */ 8721da177e4SLinus Torvalds static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb) 8731da177e4SLinus Torvalds { 8741da177e4SLinus Torvalds 8751da177e4SLinus Torvalds struct mpoa_client *mpc = find_mpc_by_vcc(vcc); 8761da177e4SLinus Torvalds struct k_message *mesg = (struct k_message*)skb->data; 8771da177e4SLinus Torvalds atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); 8781da177e4SLinus Torvalds 8791da177e4SLinus Torvalds if (mpc == NULL) { 8801da177e4SLinus Torvalds printk("mpoa: msg_from_mpoad: no mpc found\n"); 8811da177e4SLinus Torvalds return 0; 8821da177e4SLinus Torvalds } 8831da177e4SLinus Torvalds dprintk("mpoa: (%s) msg_from_mpoad:", (mpc->dev) ? mpc->dev->name : "<unknown>"); 8841da177e4SLinus Torvalds switch(mesg->type) { 8851da177e4SLinus Torvalds case MPOA_RES_REPLY_RCVD: 8861da177e4SLinus Torvalds dprintk(" mpoa_res_reply_rcvd\n"); 8871da177e4SLinus Torvalds MPOA_res_reply_rcvd(mesg, mpc); 8881da177e4SLinus Torvalds break; 8891da177e4SLinus Torvalds case MPOA_TRIGGER_RCVD: 8901da177e4SLinus Torvalds dprintk(" mpoa_trigger_rcvd\n"); 8911da177e4SLinus Torvalds MPOA_trigger_rcvd(mesg, mpc); 8921da177e4SLinus Torvalds break; 8931da177e4SLinus Torvalds case INGRESS_PURGE_RCVD: 8941da177e4SLinus Torvalds dprintk(" nhrp_purge_rcvd\n"); 8951da177e4SLinus Torvalds ingress_purge_rcvd(mesg, mpc); 8961da177e4SLinus Torvalds break; 8971da177e4SLinus Torvalds case EGRESS_PURGE_RCVD: 8981da177e4SLinus Torvalds dprintk(" egress_purge_reply_rcvd\n"); 8991da177e4SLinus Torvalds egress_purge_rcvd(mesg, mpc); 9001da177e4SLinus Torvalds break; 9011da177e4SLinus Torvalds case MPS_DEATH: 9021da177e4SLinus Torvalds dprintk(" mps_death\n"); 9031da177e4SLinus Torvalds mps_death(mesg, mpc); 9041da177e4SLinus Torvalds break; 9051da177e4SLinus Torvalds case CACHE_IMPOS_RCVD: 9061da177e4SLinus Torvalds dprintk(" cache_impos_rcvd\n"); 9071da177e4SLinus Torvalds MPOA_cache_impos_rcvd(mesg, mpc); 9081da177e4SLinus Torvalds break; 9091da177e4SLinus Torvalds case SET_MPC_CTRL_ADDR: 9101da177e4SLinus Torvalds dprintk(" set_mpc_ctrl_addr\n"); 9111da177e4SLinus Torvalds set_mpc_ctrl_addr_rcvd(mesg, mpc); 9121da177e4SLinus Torvalds break; 9131da177e4SLinus Torvalds case SET_MPS_MAC_ADDR: 9141da177e4SLinus Torvalds dprintk(" set_mps_mac_addr\n"); 9151da177e4SLinus Torvalds set_mps_mac_addr_rcvd(mesg, mpc); 9161da177e4SLinus Torvalds break; 9171da177e4SLinus Torvalds case CLEAN_UP_AND_EXIT: 9181da177e4SLinus Torvalds dprintk(" clean_up_and_exit\n"); 9191da177e4SLinus Torvalds clean_up(mesg, mpc, DIE); 9201da177e4SLinus Torvalds break; 9211da177e4SLinus Torvalds case RELOAD: 9221da177e4SLinus Torvalds dprintk(" reload\n"); 9231da177e4SLinus Torvalds clean_up(mesg, mpc, RELOAD); 9241da177e4SLinus Torvalds break; 9251da177e4SLinus Torvalds case SET_MPC_PARAMS: 9261da177e4SLinus Torvalds dprintk(" set_mpc_params\n"); 9271da177e4SLinus Torvalds mpc->parameters = mesg->content.params; 9281da177e4SLinus Torvalds break; 9291da177e4SLinus Torvalds default: 9301da177e4SLinus Torvalds dprintk(" unknown message %d\n", mesg->type); 9311da177e4SLinus Torvalds break; 9321da177e4SLinus Torvalds } 9331da177e4SLinus Torvalds kfree_skb(skb); 9341da177e4SLinus Torvalds 9351da177e4SLinus Torvalds return 0; 9361da177e4SLinus Torvalds } 9371da177e4SLinus Torvalds 9381da177e4SLinus Torvalds /* Remember that this function may not do things that sleep */ 9391da177e4SLinus Torvalds int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc) 9401da177e4SLinus Torvalds { 9411da177e4SLinus Torvalds struct sk_buff *skb; 9421da177e4SLinus Torvalds struct sock *sk; 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds if (mpc == NULL || !mpc->mpoad_vcc) { 9451da177e4SLinus Torvalds printk("mpoa: msg_to_mpoad: mesg %d to a non-existent mpoad\n", mesg->type); 9461da177e4SLinus Torvalds return -ENXIO; 9471da177e4SLinus Torvalds } 9481da177e4SLinus Torvalds 9491da177e4SLinus Torvalds skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC); 9501da177e4SLinus Torvalds if (skb == NULL) 9511da177e4SLinus Torvalds return -ENOMEM; 9521da177e4SLinus Torvalds skb_put(skb, sizeof(struct k_message)); 95327d7ff46SArnaldo Carvalho de Melo skb_copy_to_linear_data(skb, mesg, sizeof(*mesg)); 9541da177e4SLinus Torvalds atm_force_charge(mpc->mpoad_vcc, skb->truesize); 9551da177e4SLinus Torvalds 9561da177e4SLinus Torvalds sk = sk_atm(mpc->mpoad_vcc); 9571da177e4SLinus Torvalds skb_queue_tail(&sk->sk_receive_queue, skb); 9581da177e4SLinus Torvalds sk->sk_data_ready(sk, skb->len); 9591da177e4SLinus Torvalds 9601da177e4SLinus Torvalds return 0; 9611da177e4SLinus Torvalds } 9621da177e4SLinus Torvalds 9631da177e4SLinus Torvalds static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev_ptr) 9641da177e4SLinus Torvalds { 9651da177e4SLinus Torvalds struct net_device *dev; 9661da177e4SLinus Torvalds struct mpoa_client *mpc; 9671da177e4SLinus Torvalds struct lec_priv *priv; 9681da177e4SLinus Torvalds 9691da177e4SLinus Torvalds dev = (struct net_device *)dev_ptr; 970e9dc8653SEric W. Biederman 971721499e8SYOSHIFUJI Hideaki if (!net_eq(dev_net(dev), &init_net)) 972e9dc8653SEric W. Biederman return NOTIFY_DONE; 973e9dc8653SEric W. Biederman 9741da177e4SLinus Torvalds if (dev->name == NULL || strncmp(dev->name, "lec", 3)) 9751da177e4SLinus Torvalds return NOTIFY_DONE; /* we are only interested in lec:s */ 9761da177e4SLinus Torvalds 9771da177e4SLinus Torvalds switch (event) { 9781da177e4SLinus Torvalds case NETDEV_REGISTER: /* a new lec device was allocated */ 979524ad0a7SWang Chen priv = netdev_priv(dev); 9801da177e4SLinus Torvalds if (priv->lane_version < 2) 9811da177e4SLinus Torvalds break; 9821da177e4SLinus Torvalds priv->lane2_ops->associate_indicator = lane2_assoc_ind; 9831da177e4SLinus Torvalds mpc = find_mpc_by_itfnum(priv->itfnum); 9841da177e4SLinus Torvalds if (mpc == NULL) { 9851da177e4SLinus Torvalds dprintk("mpoa: mpoa_event_listener: allocating new mpc for %s\n", 9861da177e4SLinus Torvalds dev->name); 9871da177e4SLinus Torvalds mpc = alloc_mpc(); 9881da177e4SLinus Torvalds if (mpc == NULL) { 9891da177e4SLinus Torvalds printk("mpoa: mpoa_event_listener: no new mpc"); 9901da177e4SLinus Torvalds break; 9911da177e4SLinus Torvalds } 9921da177e4SLinus Torvalds } 9931da177e4SLinus Torvalds mpc->dev_num = priv->itfnum; 9941da177e4SLinus Torvalds mpc->dev = dev; 9951da177e4SLinus Torvalds dev_hold(dev); 9961da177e4SLinus Torvalds dprintk("mpoa: (%s) was initialized\n", dev->name); 9971da177e4SLinus Torvalds break; 9981da177e4SLinus Torvalds case NETDEV_UNREGISTER: 9991da177e4SLinus Torvalds /* the lec device was deallocated */ 10001da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); 10011da177e4SLinus Torvalds if (mpc == NULL) 10021da177e4SLinus Torvalds break; 10031da177e4SLinus Torvalds dprintk("mpoa: device (%s) was deallocated\n", dev->name); 10041da177e4SLinus Torvalds stop_mpc(mpc); 10051da177e4SLinus Torvalds dev_put(mpc->dev); 10061da177e4SLinus Torvalds mpc->dev = NULL; 10071da177e4SLinus Torvalds break; 10081da177e4SLinus Torvalds case NETDEV_UP: 10091da177e4SLinus Torvalds /* the dev was ifconfig'ed up */ 10101da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); 10111da177e4SLinus Torvalds if (mpc == NULL) 10121da177e4SLinus Torvalds break; 10131da177e4SLinus Torvalds if (mpc->mpoad_vcc != NULL) { 10141da177e4SLinus Torvalds start_mpc(mpc, dev); 10151da177e4SLinus Torvalds } 10161da177e4SLinus Torvalds break; 10171da177e4SLinus Torvalds case NETDEV_DOWN: 10181da177e4SLinus Torvalds /* the dev was ifconfig'ed down */ 10191da177e4SLinus Torvalds /* this means that the flow of packets from the 10201da177e4SLinus Torvalds * upper layer stops 10211da177e4SLinus Torvalds */ 10221da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); 10231da177e4SLinus Torvalds if (mpc == NULL) 10241da177e4SLinus Torvalds break; 10251da177e4SLinus Torvalds if (mpc->mpoad_vcc != NULL) { 10261da177e4SLinus Torvalds stop_mpc(mpc); 10271da177e4SLinus Torvalds } 10281da177e4SLinus Torvalds break; 10291da177e4SLinus Torvalds case NETDEV_REBOOT: 10301da177e4SLinus Torvalds case NETDEV_CHANGE: 10311da177e4SLinus Torvalds case NETDEV_CHANGEMTU: 10321da177e4SLinus Torvalds case NETDEV_CHANGEADDR: 10331da177e4SLinus Torvalds case NETDEV_GOING_DOWN: 10341da177e4SLinus Torvalds break; 10351da177e4SLinus Torvalds default: 10361da177e4SLinus Torvalds break; 10371da177e4SLinus Torvalds } 10381da177e4SLinus Torvalds 10391da177e4SLinus Torvalds return NOTIFY_DONE; 10401da177e4SLinus Torvalds } 10411da177e4SLinus Torvalds 10421da177e4SLinus Torvalds /* 10431da177e4SLinus Torvalds * Functions which are called after a message is received from mpcd. 10441da177e4SLinus Torvalds * Msg is reused on purpose. 10451da177e4SLinus Torvalds */ 10461da177e4SLinus Torvalds 10471da177e4SLinus Torvalds 10481da177e4SLinus Torvalds static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc) 10491da177e4SLinus Torvalds { 105030d492daSAl Viro __be32 dst_ip = msg->content.in_info.in_dst_ip; 10511da177e4SLinus Torvalds in_cache_entry *entry; 10521da177e4SLinus Torvalds 10531da177e4SLinus Torvalds entry = mpc->in_ops->get(dst_ip, mpc); 10541da177e4SLinus Torvalds if(entry == NULL){ 10551da177e4SLinus Torvalds entry = mpc->in_ops->add_entry(dst_ip, mpc); 10561da177e4SLinus Torvalds entry->entry_state = INGRESS_RESOLVING; 10571da177e4SLinus Torvalds msg->type = SND_MPOA_RES_RQST; 10581da177e4SLinus Torvalds msg->content.in_info = entry->ctrl_info; 10591da177e4SLinus Torvalds msg_to_mpoad(msg, mpc); 10601da177e4SLinus Torvalds do_gettimeofday(&(entry->reply_wait)); 10611da177e4SLinus Torvalds mpc->in_ops->put(entry); 10621da177e4SLinus Torvalds return; 10631da177e4SLinus Torvalds } 10641da177e4SLinus Torvalds 10651da177e4SLinus Torvalds if(entry->entry_state == INGRESS_INVALID){ 10661da177e4SLinus Torvalds entry->entry_state = INGRESS_RESOLVING; 10671da177e4SLinus Torvalds msg->type = SND_MPOA_RES_RQST; 10681da177e4SLinus Torvalds msg->content.in_info = entry->ctrl_info; 10691da177e4SLinus Torvalds msg_to_mpoad(msg, mpc); 10701da177e4SLinus Torvalds do_gettimeofday(&(entry->reply_wait)); 10711da177e4SLinus Torvalds mpc->in_ops->put(entry); 10721da177e4SLinus Torvalds return; 10731da177e4SLinus Torvalds } 10741da177e4SLinus Torvalds 10751da177e4SLinus Torvalds printk("mpoa: (%s) MPOA_trigger_rcvd: entry already in resolving state\n", 10761da177e4SLinus Torvalds (mpc->dev) ? mpc->dev->name : "<unknown>"); 10771da177e4SLinus Torvalds mpc->in_ops->put(entry); 10781da177e4SLinus Torvalds return; 10791da177e4SLinus Torvalds } 10801da177e4SLinus Torvalds 10811da177e4SLinus Torvalds /* 10821da177e4SLinus Torvalds * Things get complicated because we have to check if there's an egress 10831da177e4SLinus Torvalds * shortcut with suitable traffic parameters we could use. 10841da177e4SLinus Torvalds */ 10851da177e4SLinus Torvalds static void check_qos_and_open_shortcut(struct k_message *msg, struct mpoa_client *client, in_cache_entry *entry) 10861da177e4SLinus Torvalds { 108730d492daSAl Viro __be32 dst_ip = msg->content.in_info.in_dst_ip; 10881da177e4SLinus Torvalds struct atm_mpoa_qos *qos = atm_mpoa_search_qos(dst_ip); 10891da177e4SLinus Torvalds eg_cache_entry *eg_entry = client->eg_ops->get_by_src_ip(dst_ip, client); 10901da177e4SLinus Torvalds 10911da177e4SLinus Torvalds if(eg_entry && eg_entry->shortcut){ 10921da177e4SLinus Torvalds if(eg_entry->shortcut->qos.txtp.traffic_class & 10931da177e4SLinus Torvalds msg->qos.txtp.traffic_class & 10941da177e4SLinus Torvalds (qos ? qos->qos.txtp.traffic_class : ATM_UBR | ATM_CBR)){ 10951da177e4SLinus Torvalds if(eg_entry->shortcut->qos.txtp.traffic_class == ATM_UBR) 10961da177e4SLinus Torvalds entry->shortcut = eg_entry->shortcut; 10971da177e4SLinus Torvalds else if(eg_entry->shortcut->qos.txtp.max_pcr > 0) 10981da177e4SLinus Torvalds entry->shortcut = eg_entry->shortcut; 10991da177e4SLinus Torvalds } 11001da177e4SLinus Torvalds if(entry->shortcut){ 110121454aaaSHarvey Harrison dprintk("mpoa: (%s) using egress SVC to reach %pI4\n", 110221454aaaSHarvey Harrison client->dev->name, &dst_ip); 11031da177e4SLinus Torvalds client->eg_ops->put(eg_entry); 11041da177e4SLinus Torvalds return; 11051da177e4SLinus Torvalds } 11061da177e4SLinus Torvalds } 11071da177e4SLinus Torvalds if (eg_entry != NULL) 11081da177e4SLinus Torvalds client->eg_ops->put(eg_entry); 11091da177e4SLinus Torvalds 11101da177e4SLinus Torvalds /* No luck in the egress cache we must open an ingress SVC */ 11111da177e4SLinus Torvalds msg->type = OPEN_INGRESS_SVC; 11121da177e4SLinus Torvalds if (qos && (qos->qos.txtp.traffic_class == msg->qos.txtp.traffic_class)) 11131da177e4SLinus Torvalds { 11141da177e4SLinus Torvalds msg->qos = qos->qos; 11151da177e4SLinus Torvalds printk("mpoa: (%s) trying to get a CBR shortcut\n",client->dev->name); 11161da177e4SLinus Torvalds } 11171da177e4SLinus Torvalds else memset(&msg->qos,0,sizeof(struct atm_qos)); 11181da177e4SLinus Torvalds msg_to_mpoad(msg, client); 11191da177e4SLinus Torvalds return; 11201da177e4SLinus Torvalds } 11211da177e4SLinus Torvalds 11221da177e4SLinus Torvalds static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc) 11231da177e4SLinus Torvalds { 112430d492daSAl Viro __be32 dst_ip = msg->content.in_info.in_dst_ip; 11251da177e4SLinus Torvalds in_cache_entry *entry = mpc->in_ops->get(dst_ip, mpc); 11261e4fd51eSAndrew Morton 112721454aaaSHarvey Harrison dprintk("mpoa: (%s) MPOA_res_reply_rcvd: ip %pI4\n", 112821454aaaSHarvey Harrison mpc->dev->name, &dst_ip); 11291da177e4SLinus Torvalds ddprintk("mpoa: (%s) MPOA_res_reply_rcvd() entry = %p", mpc->dev->name, entry); 11301da177e4SLinus Torvalds if(entry == NULL){ 11311da177e4SLinus Torvalds printk("\nmpoa: (%s) ARGH, received res. reply for an entry that doesn't exist.\n", mpc->dev->name); 11321da177e4SLinus Torvalds return; 11331da177e4SLinus Torvalds } 11341da177e4SLinus Torvalds ddprintk(" entry_state = %d ", entry->entry_state); 11351da177e4SLinus Torvalds 11361da177e4SLinus Torvalds if (entry->entry_state == INGRESS_RESOLVED) { 11371da177e4SLinus Torvalds printk("\nmpoa: (%s) MPOA_res_reply_rcvd for RESOLVED entry!\n", mpc->dev->name); 11381da177e4SLinus Torvalds mpc->in_ops->put(entry); 11391da177e4SLinus Torvalds return; 11401da177e4SLinus Torvalds } 11411da177e4SLinus Torvalds 11421da177e4SLinus Torvalds entry->ctrl_info = msg->content.in_info; 11431da177e4SLinus Torvalds do_gettimeofday(&(entry->tv)); 11441da177e4SLinus Torvalds do_gettimeofday(&(entry->reply_wait)); /* Used in refreshing func from now on */ 11451da177e4SLinus Torvalds entry->refresh_time = 0; 11461da177e4SLinus Torvalds ddprintk("entry->shortcut = %p\n", entry->shortcut); 11471da177e4SLinus Torvalds 11481da177e4SLinus Torvalds if(entry->entry_state == INGRESS_RESOLVING && entry->shortcut != NULL){ 11491da177e4SLinus Torvalds entry->entry_state = INGRESS_RESOLVED; 11501da177e4SLinus Torvalds mpc->in_ops->put(entry); 11511da177e4SLinus Torvalds return; /* Shortcut already open... */ 11521da177e4SLinus Torvalds } 11531da177e4SLinus Torvalds 11541da177e4SLinus Torvalds if (entry->shortcut != NULL) { 11551da177e4SLinus Torvalds printk("mpoa: (%s) MPOA_res_reply_rcvd: entry->shortcut != NULL, impossible!\n", 11561da177e4SLinus Torvalds mpc->dev->name); 11571da177e4SLinus Torvalds mpc->in_ops->put(entry); 11581da177e4SLinus Torvalds return; 11591da177e4SLinus Torvalds } 11601da177e4SLinus Torvalds 11611da177e4SLinus Torvalds check_qos_and_open_shortcut(msg, mpc, entry); 11621da177e4SLinus Torvalds entry->entry_state = INGRESS_RESOLVED; 11631da177e4SLinus Torvalds mpc->in_ops->put(entry); 11641da177e4SLinus Torvalds 11651da177e4SLinus Torvalds return; 11661da177e4SLinus Torvalds 11671da177e4SLinus Torvalds } 11681da177e4SLinus Torvalds 11691da177e4SLinus Torvalds static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) 11701da177e4SLinus Torvalds { 117130d492daSAl Viro __be32 dst_ip = msg->content.in_info.in_dst_ip; 117230d492daSAl Viro __be32 mask = msg->ip_mask; 11731da177e4SLinus Torvalds in_cache_entry *entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask); 11741da177e4SLinus Torvalds 11751da177e4SLinus Torvalds if(entry == NULL){ 117621454aaaSHarvey Harrison printk("mpoa: (%s) ingress_purge_rcvd: purge for a non-existing entry, ip = %pI4\n", 117721454aaaSHarvey Harrison mpc->dev->name, &dst_ip); 11781da177e4SLinus Torvalds return; 11791da177e4SLinus Torvalds } 11801da177e4SLinus Torvalds 11811da177e4SLinus Torvalds do { 118221454aaaSHarvey Harrison dprintk("mpoa: (%s) ingress_purge_rcvd: removing an ingress entry, ip = %pI4\n", 118321454aaaSHarvey Harrison mpc->dev->name, &dst_ip); 11841da177e4SLinus Torvalds write_lock_bh(&mpc->ingress_lock); 11851da177e4SLinus Torvalds mpc->in_ops->remove_entry(entry, mpc); 11861da177e4SLinus Torvalds write_unlock_bh(&mpc->ingress_lock); 11871da177e4SLinus Torvalds mpc->in_ops->put(entry); 11881da177e4SLinus Torvalds entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask); 11891da177e4SLinus Torvalds } while (entry != NULL); 11901da177e4SLinus Torvalds 11911da177e4SLinus Torvalds return; 11921da177e4SLinus Torvalds } 11931da177e4SLinus Torvalds 11941da177e4SLinus Torvalds static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) 11951da177e4SLinus Torvalds { 119630d492daSAl Viro __be32 cache_id = msg->content.eg_info.cache_id; 11971da177e4SLinus Torvalds eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(cache_id, mpc); 11981da177e4SLinus Torvalds 11991da177e4SLinus Torvalds if (entry == NULL) { 12001da177e4SLinus Torvalds dprintk("mpoa: (%s) egress_purge_rcvd: purge for a non-existing entry\n", mpc->dev->name); 12011da177e4SLinus Torvalds return; 12021da177e4SLinus Torvalds } 12031da177e4SLinus Torvalds 12041da177e4SLinus Torvalds write_lock_irq(&mpc->egress_lock); 12051da177e4SLinus Torvalds mpc->eg_ops->remove_entry(entry, mpc); 12061da177e4SLinus Torvalds write_unlock_irq(&mpc->egress_lock); 12071da177e4SLinus Torvalds 12081da177e4SLinus Torvalds mpc->eg_ops->put(entry); 12091da177e4SLinus Torvalds 12101da177e4SLinus Torvalds return; 12111da177e4SLinus Torvalds } 12121da177e4SLinus Torvalds 12131da177e4SLinus Torvalds static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry) 12141da177e4SLinus Torvalds { 12151da177e4SLinus Torvalds struct sock *sk; 12161da177e4SLinus Torvalds struct k_message *purge_msg; 12171da177e4SLinus Torvalds struct sk_buff *skb; 12181da177e4SLinus Torvalds 12191da177e4SLinus Torvalds dprintk("mpoa: purge_egress_shortcut: entering\n"); 12201da177e4SLinus Torvalds if (vcc == NULL) { 12211da177e4SLinus Torvalds printk("mpoa: purge_egress_shortcut: vcc == NULL\n"); 12221da177e4SLinus Torvalds return; 12231da177e4SLinus Torvalds } 12241da177e4SLinus Torvalds 12251da177e4SLinus Torvalds skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC); 12261da177e4SLinus Torvalds if (skb == NULL) { 12271da177e4SLinus Torvalds printk("mpoa: purge_egress_shortcut: out of memory\n"); 12281da177e4SLinus Torvalds return; 12291da177e4SLinus Torvalds } 12301da177e4SLinus Torvalds 12311da177e4SLinus Torvalds skb_put(skb, sizeof(struct k_message)); 12321da177e4SLinus Torvalds memset(skb->data, 0, sizeof(struct k_message)); 12331da177e4SLinus Torvalds purge_msg = (struct k_message *)skb->data; 12341da177e4SLinus Torvalds purge_msg->type = DATA_PLANE_PURGE; 12351da177e4SLinus Torvalds if (entry != NULL) 12361da177e4SLinus Torvalds purge_msg->content.eg_info = entry->ctrl_info; 12371da177e4SLinus Torvalds 12381da177e4SLinus Torvalds atm_force_charge(vcc, skb->truesize); 12391da177e4SLinus Torvalds 12401da177e4SLinus Torvalds sk = sk_atm(vcc); 12411da177e4SLinus Torvalds skb_queue_tail(&sk->sk_receive_queue, skb); 12421da177e4SLinus Torvalds sk->sk_data_ready(sk, skb->len); 12431da177e4SLinus Torvalds dprintk("mpoa: purge_egress_shortcut: exiting:\n"); 12441da177e4SLinus Torvalds 12451da177e4SLinus Torvalds return; 12461da177e4SLinus Torvalds } 12471da177e4SLinus Torvalds 12481da177e4SLinus Torvalds /* 12491da177e4SLinus Torvalds * Our MPS died. Tell our daemon to send NHRP data plane purge to each 12501da177e4SLinus Torvalds * of the egress shortcuts we have. 12511da177e4SLinus Torvalds */ 12521da177e4SLinus Torvalds static void mps_death( struct k_message * msg, struct mpoa_client * mpc ) 12531da177e4SLinus Torvalds { 12541da177e4SLinus Torvalds eg_cache_entry *entry; 12551da177e4SLinus Torvalds 12561da177e4SLinus Torvalds dprintk("mpoa: (%s) mps_death:\n", mpc->dev->name); 12571da177e4SLinus Torvalds 12581da177e4SLinus Torvalds if(memcmp(msg->MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN)){ 12591da177e4SLinus Torvalds printk("mpoa: (%s) mps_death: wrong MPS\n", mpc->dev->name); 12601da177e4SLinus Torvalds return; 12611da177e4SLinus Torvalds } 12621da177e4SLinus Torvalds 12631da177e4SLinus Torvalds /* FIXME: This knows too much of the cache structure */ 12641da177e4SLinus Torvalds read_lock_irq(&mpc->egress_lock); 12651da177e4SLinus Torvalds entry = mpc->eg_cache; 12661da177e4SLinus Torvalds while (entry != NULL) { 12671da177e4SLinus Torvalds purge_egress_shortcut(entry->shortcut, entry); 12681da177e4SLinus Torvalds entry = entry->next; 12691da177e4SLinus Torvalds } 12701da177e4SLinus Torvalds read_unlock_irq(&mpc->egress_lock); 12711da177e4SLinus Torvalds 12721da177e4SLinus Torvalds mpc->in_ops->destroy_cache(mpc); 12731da177e4SLinus Torvalds mpc->eg_ops->destroy_cache(mpc); 12741da177e4SLinus Torvalds 12751da177e4SLinus Torvalds return; 12761da177e4SLinus Torvalds } 12771da177e4SLinus Torvalds 12781da177e4SLinus Torvalds static void MPOA_cache_impos_rcvd( struct k_message * msg, struct mpoa_client * mpc) 12791da177e4SLinus Torvalds { 12801da177e4SLinus Torvalds uint16_t holding_time; 12811da177e4SLinus Torvalds eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(msg->content.eg_info.cache_id, mpc); 12821da177e4SLinus Torvalds 12831da177e4SLinus Torvalds holding_time = msg->content.eg_info.holding_time; 12841da177e4SLinus Torvalds dprintk("mpoa: (%s) MPOA_cache_impos_rcvd: entry = %p, holding_time = %u\n", 12851da177e4SLinus Torvalds mpc->dev->name, entry, holding_time); 12861da177e4SLinus Torvalds if(entry == NULL && holding_time) { 12871da177e4SLinus Torvalds entry = mpc->eg_ops->add_entry(msg, mpc); 12881da177e4SLinus Torvalds mpc->eg_ops->put(entry); 12891da177e4SLinus Torvalds return; 12901da177e4SLinus Torvalds } 12911da177e4SLinus Torvalds if(holding_time){ 12921da177e4SLinus Torvalds mpc->eg_ops->update(entry, holding_time); 12931da177e4SLinus Torvalds return; 12941da177e4SLinus Torvalds } 12951da177e4SLinus Torvalds 12961da177e4SLinus Torvalds write_lock_irq(&mpc->egress_lock); 12971da177e4SLinus Torvalds mpc->eg_ops->remove_entry(entry, mpc); 12981da177e4SLinus Torvalds write_unlock_irq(&mpc->egress_lock); 12991da177e4SLinus Torvalds 13001da177e4SLinus Torvalds mpc->eg_ops->put(entry); 13011da177e4SLinus Torvalds 13021da177e4SLinus Torvalds return; 13031da177e4SLinus Torvalds } 13041da177e4SLinus Torvalds 13051da177e4SLinus Torvalds static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc) 13061da177e4SLinus Torvalds { 13071da177e4SLinus Torvalds struct lec_priv *priv; 13081da177e4SLinus Torvalds int i, retval ; 13091da177e4SLinus Torvalds 13101da177e4SLinus Torvalds uint8_t tlv[4 + 1 + 1 + 1 + ATM_ESA_LEN]; 13111da177e4SLinus Torvalds 13121da177e4SLinus Torvalds tlv[0] = 00; tlv[1] = 0xa0; tlv[2] = 0x3e; tlv[3] = 0x2a; /* type */ 13131da177e4SLinus Torvalds tlv[4] = 1 + 1 + ATM_ESA_LEN; /* length */ 13141da177e4SLinus Torvalds tlv[5] = 0x02; /* MPOA client */ 13151da177e4SLinus Torvalds tlv[6] = 0x00; /* number of MPS MAC addresses */ 13161da177e4SLinus Torvalds 13171da177e4SLinus Torvalds memcpy(&tlv[7], mesg->MPS_ctrl, ATM_ESA_LEN); /* MPC ctrl ATM addr */ 13181da177e4SLinus Torvalds memcpy(mpc->our_ctrl_addr, mesg->MPS_ctrl, ATM_ESA_LEN); 13191da177e4SLinus Torvalds 13201da177e4SLinus Torvalds dprintk("mpoa: (%s) setting MPC ctrl ATM address to ", 13211da177e4SLinus Torvalds (mpc->dev) ? mpc->dev->name : "<unknown>"); 13221da177e4SLinus Torvalds for (i = 7; i < sizeof(tlv); i++) 13231da177e4SLinus Torvalds dprintk("%02x ", tlv[i]); 13241da177e4SLinus Torvalds dprintk("\n"); 13251da177e4SLinus Torvalds 13261da177e4SLinus Torvalds if (mpc->dev) { 1327524ad0a7SWang Chen priv = netdev_priv(mpc->dev); 13281da177e4SLinus Torvalds retval = priv->lane2_ops->associate_req(mpc->dev, mpc->dev->dev_addr, tlv, sizeof(tlv)); 13291da177e4SLinus Torvalds if (retval == 0) 13301da177e4SLinus Torvalds printk("mpoa: (%s) MPOA device type TLV association failed\n", mpc->dev->name); 13311da177e4SLinus Torvalds retval = priv->lane2_ops->resolve(mpc->dev, NULL, 1, NULL, NULL); 13321da177e4SLinus Torvalds if (retval < 0) 13331da177e4SLinus Torvalds printk("mpoa: (%s) targetless LE_ARP request failed\n", mpc->dev->name); 13341da177e4SLinus Torvalds } 13351da177e4SLinus Torvalds 13361da177e4SLinus Torvalds return; 13371da177e4SLinus Torvalds } 13381da177e4SLinus Torvalds 13391da177e4SLinus Torvalds static void set_mps_mac_addr_rcvd(struct k_message *msg, struct mpoa_client *client) 13401da177e4SLinus Torvalds { 13411da177e4SLinus Torvalds 13421da177e4SLinus Torvalds if(client->number_of_mps_macs) 13431da177e4SLinus Torvalds kfree(client->mps_macs); 13441da177e4SLinus Torvalds client->number_of_mps_macs = 0; 13452afe37cdSArnaldo Carvalho de Melo client->mps_macs = kmemdup(msg->MPS_ctrl, ETH_ALEN, GFP_KERNEL); 13461da177e4SLinus Torvalds if (client->mps_macs == NULL) { 13471da177e4SLinus Torvalds printk("mpoa: set_mps_mac_addr_rcvd: out of memory\n"); 13481da177e4SLinus Torvalds return; 13491da177e4SLinus Torvalds } 13501da177e4SLinus Torvalds client->number_of_mps_macs = 1; 13511da177e4SLinus Torvalds 13521da177e4SLinus Torvalds return; 13531da177e4SLinus Torvalds } 13541da177e4SLinus Torvalds 13551da177e4SLinus Torvalds /* 13561da177e4SLinus Torvalds * purge egress cache and tell daemon to 'action' (DIE, RELOAD) 13571da177e4SLinus Torvalds */ 13581da177e4SLinus Torvalds static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action) 13591da177e4SLinus Torvalds { 13601da177e4SLinus Torvalds 13611da177e4SLinus Torvalds eg_cache_entry *entry; 13621da177e4SLinus Torvalds msg->type = SND_EGRESS_PURGE; 13631da177e4SLinus Torvalds 13641da177e4SLinus Torvalds 13651da177e4SLinus Torvalds /* FIXME: This knows too much of the cache structure */ 13661da177e4SLinus Torvalds read_lock_irq(&mpc->egress_lock); 13671da177e4SLinus Torvalds entry = mpc->eg_cache; 13681da177e4SLinus Torvalds while (entry != NULL){ 13691da177e4SLinus Torvalds msg->content.eg_info = entry->ctrl_info; 13701da177e4SLinus Torvalds dprintk("mpoa: cache_id %u\n", entry->ctrl_info.cache_id); 13711da177e4SLinus Torvalds msg_to_mpoad(msg, mpc); 13721da177e4SLinus Torvalds entry = entry->next; 13731da177e4SLinus Torvalds } 13741da177e4SLinus Torvalds read_unlock_irq(&mpc->egress_lock); 13751da177e4SLinus Torvalds 13761da177e4SLinus Torvalds msg->type = action; 13771da177e4SLinus Torvalds msg_to_mpoad(msg, mpc); 13781da177e4SLinus Torvalds return; 13791da177e4SLinus Torvalds } 13801da177e4SLinus Torvalds 13811da177e4SLinus Torvalds static void mpc_timer_refresh(void) 13821da177e4SLinus Torvalds { 13831da177e4SLinus Torvalds mpc_timer.expires = jiffies + (MPC_P2 * HZ); 13841da177e4SLinus Torvalds mpc_timer.data = mpc_timer.expires; 13851da177e4SLinus Torvalds mpc_timer.function = mpc_cache_check; 13861da177e4SLinus Torvalds add_timer(&mpc_timer); 13871da177e4SLinus Torvalds 13881da177e4SLinus Torvalds return; 13891da177e4SLinus Torvalds } 13901da177e4SLinus Torvalds 13911da177e4SLinus Torvalds static void mpc_cache_check( unsigned long checking_time ) 13921da177e4SLinus Torvalds { 13931da177e4SLinus Torvalds struct mpoa_client *mpc = mpcs; 13941da177e4SLinus Torvalds static unsigned long previous_resolving_check_time; 13951da177e4SLinus Torvalds static unsigned long previous_refresh_time; 13961da177e4SLinus Torvalds 13971da177e4SLinus Torvalds while( mpc != NULL ){ 13981da177e4SLinus Torvalds mpc->in_ops->clear_count(mpc); 13991da177e4SLinus Torvalds mpc->eg_ops->clear_expired(mpc); 14001da177e4SLinus Torvalds if(checking_time - previous_resolving_check_time > mpc->parameters.mpc_p4 * HZ ){ 14011da177e4SLinus Torvalds mpc->in_ops->check_resolving(mpc); 14021da177e4SLinus Torvalds previous_resolving_check_time = checking_time; 14031da177e4SLinus Torvalds } 14041da177e4SLinus Torvalds if(checking_time - previous_refresh_time > mpc->parameters.mpc_p5 * HZ ){ 14051da177e4SLinus Torvalds mpc->in_ops->refresh(mpc); 14061da177e4SLinus Torvalds previous_refresh_time = checking_time; 14071da177e4SLinus Torvalds } 14081da177e4SLinus Torvalds mpc = mpc->next; 14091da177e4SLinus Torvalds } 14101da177e4SLinus Torvalds mpc_timer_refresh(); 14111da177e4SLinus Torvalds 14121da177e4SLinus Torvalds return; 14131da177e4SLinus Torvalds } 14141da177e4SLinus Torvalds 14151da177e4SLinus Torvalds static int atm_mpoa_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 14161da177e4SLinus Torvalds { 14171da177e4SLinus Torvalds int err = 0; 14181da177e4SLinus Torvalds struct atm_vcc *vcc = ATM_SD(sock); 14191da177e4SLinus Torvalds 14201da177e4SLinus Torvalds if (cmd != ATMMPC_CTRL && cmd != ATMMPC_DATA) 14211da177e4SLinus Torvalds return -ENOIOCTLCMD; 14221da177e4SLinus Torvalds 14231da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 14241da177e4SLinus Torvalds return -EPERM; 14251da177e4SLinus Torvalds 14261da177e4SLinus Torvalds switch (cmd) { 14271da177e4SLinus Torvalds case ATMMPC_CTRL: 14281da177e4SLinus Torvalds err = atm_mpoa_mpoad_attach(vcc, (int)arg); 14291da177e4SLinus Torvalds if (err >= 0) 14301da177e4SLinus Torvalds sock->state = SS_CONNECTED; 14311da177e4SLinus Torvalds break; 14321da177e4SLinus Torvalds case ATMMPC_DATA: 14331da177e4SLinus Torvalds err = atm_mpoa_vcc_attach(vcc, (void __user *)arg); 14341da177e4SLinus Torvalds break; 14351da177e4SLinus Torvalds default: 14361da177e4SLinus Torvalds break; 14371da177e4SLinus Torvalds } 14381da177e4SLinus Torvalds return err; 14391da177e4SLinus Torvalds } 14401da177e4SLinus Torvalds 14411da177e4SLinus Torvalds 14421da177e4SLinus Torvalds static struct atm_ioctl atm_ioctl_ops = { 14431da177e4SLinus Torvalds .owner = THIS_MODULE, 14441da177e4SLinus Torvalds .ioctl = atm_mpoa_ioctl, 14451da177e4SLinus Torvalds }; 14461da177e4SLinus Torvalds 14471da177e4SLinus Torvalds static __init int atm_mpoa_init(void) 14481da177e4SLinus Torvalds { 14491da177e4SLinus Torvalds register_atm_ioctl(&atm_ioctl_ops); 14501da177e4SLinus Torvalds 14511da177e4SLinus Torvalds if (mpc_proc_init() != 0) 145299824461SJoe Perches pr_info("failed to initialize /proc/mpoa\n"); 14531da177e4SLinus Torvalds 14541da177e4SLinus Torvalds printk("mpc.c: " __DATE__ " " __TIME__ " initialized\n"); 14551da177e4SLinus Torvalds 14561da177e4SLinus Torvalds return 0; 14571da177e4SLinus Torvalds } 14581da177e4SLinus Torvalds 14591da177e4SLinus Torvalds static void __exit atm_mpoa_cleanup(void) 14601da177e4SLinus Torvalds { 14611da177e4SLinus Torvalds struct mpoa_client *mpc, *tmp; 14621da177e4SLinus Torvalds struct atm_mpoa_qos *qos, *nextqos; 14631da177e4SLinus Torvalds struct lec_priv *priv; 14641da177e4SLinus Torvalds 14651da177e4SLinus Torvalds mpc_proc_clean(); 14661da177e4SLinus Torvalds 14671da177e4SLinus Torvalds del_timer(&mpc_timer); 14681da177e4SLinus Torvalds unregister_netdevice_notifier(&mpoa_notifier); 14691da177e4SLinus Torvalds deregister_atm_ioctl(&atm_ioctl_ops); 14701da177e4SLinus Torvalds 14711da177e4SLinus Torvalds mpc = mpcs; 14721da177e4SLinus Torvalds mpcs = NULL; 14731da177e4SLinus Torvalds while (mpc != NULL) { 14741da177e4SLinus Torvalds tmp = mpc->next; 14751da177e4SLinus Torvalds if (mpc->dev != NULL) { 14761da177e4SLinus Torvalds stop_mpc(mpc); 1477524ad0a7SWang Chen priv = netdev_priv(mpc->dev); 14781da177e4SLinus Torvalds if (priv->lane2_ops != NULL) 14791da177e4SLinus Torvalds priv->lane2_ops->associate_indicator = NULL; 14801da177e4SLinus Torvalds } 14811da177e4SLinus Torvalds ddprintk("mpoa: cleanup_module: about to clear caches\n"); 14821da177e4SLinus Torvalds mpc->in_ops->destroy_cache(mpc); 14831da177e4SLinus Torvalds mpc->eg_ops->destroy_cache(mpc); 14841da177e4SLinus Torvalds ddprintk("mpoa: cleanup_module: caches cleared\n"); 14851da177e4SLinus Torvalds kfree(mpc->mps_macs); 14861da177e4SLinus Torvalds memset(mpc, 0, sizeof(struct mpoa_client)); 14871da177e4SLinus Torvalds ddprintk("mpoa: cleanup_module: about to kfree %p\n", mpc); 14881da177e4SLinus Torvalds kfree(mpc); 14891da177e4SLinus Torvalds ddprintk("mpoa: cleanup_module: next mpc is at %p\n", tmp); 14901da177e4SLinus Torvalds mpc = tmp; 14911da177e4SLinus Torvalds } 14921da177e4SLinus Torvalds 14931da177e4SLinus Torvalds qos = qos_head; 14941da177e4SLinus Torvalds qos_head = NULL; 14951da177e4SLinus Torvalds while (qos != NULL) { 14961da177e4SLinus Torvalds nextqos = qos->next; 14971da177e4SLinus Torvalds dprintk("mpoa: cleanup_module: freeing qos entry %p\n", qos); 14981da177e4SLinus Torvalds kfree(qos); 14991da177e4SLinus Torvalds qos = nextqos; 15001da177e4SLinus Torvalds } 15011da177e4SLinus Torvalds 15021da177e4SLinus Torvalds return; 15031da177e4SLinus Torvalds } 15041da177e4SLinus Torvalds 15051da177e4SLinus Torvalds module_init(atm_mpoa_init); 15061da177e4SLinus Torvalds module_exit(atm_mpoa_cleanup); 15071da177e4SLinus Torvalds 15081da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 1509