11da177e4SLinus Torvalds #include <linux/kernel.h> 21da177e4SLinus Torvalds #include <linux/string.h> 31da177e4SLinus Torvalds #include <linux/timer.h> 41da177e4SLinus Torvalds #include <linux/init.h> 51da177e4SLinus Torvalds #include <linux/bitops.h> 64fc268d2SRandy Dunlap #include <linux/capability.h> 71da177e4SLinus Torvalds #include <linux/seq_file.h> 81da177e4SLinus Torvalds 91da177e4SLinus Torvalds /* We are an ethernet device */ 101da177e4SLinus Torvalds #include <linux/if_ether.h> 111da177e4SLinus Torvalds #include <linux/netdevice.h> 121da177e4SLinus Torvalds #include <linux/etherdevice.h> 131da177e4SLinus Torvalds #include <net/sock.h> 141da177e4SLinus Torvalds #include <linux/skbuff.h> 151da177e4SLinus Torvalds #include <linux/ip.h> 161da177e4SLinus Torvalds #include <asm/byteorder.h> 171da177e4SLinus Torvalds #include <asm/uaccess.h> 181da177e4SLinus Torvalds #include <net/checksum.h> /* for ip_fast_csum() */ 191da177e4SLinus Torvalds #include <net/arp.h> 201da177e4SLinus Torvalds #include <net/dst.h> 211da177e4SLinus Torvalds #include <linux/proc_fs.h> 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds /* And atm device */ 241da177e4SLinus Torvalds #include <linux/atmdev.h> 251da177e4SLinus Torvalds #include <linux/atmlec.h> 261da177e4SLinus Torvalds #include <linux/atmmpc.h> 271da177e4SLinus Torvalds /* Modular too */ 281da177e4SLinus Torvalds #include <linux/module.h> 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds #include "lec.h" 311da177e4SLinus Torvalds #include "mpc.h" 321da177e4SLinus Torvalds #include "resources.h" 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds /* 351da177e4SLinus Torvalds * mpc.c: Implementation of MPOA client kernel part 361da177e4SLinus Torvalds */ 371da177e4SLinus Torvalds 381da177e4SLinus Torvalds #if 0 391da177e4SLinus Torvalds #define dprintk printk /* debug */ 401da177e4SLinus Torvalds #else 411da177e4SLinus Torvalds #define dprintk(format,args...) 421da177e4SLinus Torvalds #endif 431da177e4SLinus Torvalds 441da177e4SLinus Torvalds #if 0 451da177e4SLinus Torvalds #define ddprintk printk /* more debug */ 461da177e4SLinus Torvalds #else 471da177e4SLinus Torvalds #define ddprintk(format,args...) 481da177e4SLinus Torvalds #endif 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds #define MPOA_TAG_LEN 4 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds /* mpc_daemon -> kernel */ 551da177e4SLinus Torvalds static void MPOA_trigger_rcvd (struct k_message *msg, struct mpoa_client *mpc); 561da177e4SLinus Torvalds static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc); 571da177e4SLinus Torvalds static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc); 581da177e4SLinus Torvalds static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc); 591da177e4SLinus Torvalds static void mps_death(struct k_message *msg, struct mpoa_client *mpc); 601da177e4SLinus Torvalds static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action); 611da177e4SLinus Torvalds static void MPOA_cache_impos_rcvd(struct k_message *msg, struct mpoa_client *mpc); 621da177e4SLinus Torvalds static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc); 631da177e4SLinus Torvalds static void set_mps_mac_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc); 641da177e4SLinus Torvalds 651da177e4SLinus Torvalds static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac, 661da177e4SLinus Torvalds uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type); 671da177e4SLinus Torvalds static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry); 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc); 701da177e4SLinus Torvalds static void mpoad_close(struct atm_vcc *vcc); 711da177e4SLinus Torvalds static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb); 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb); 741da177e4SLinus Torvalds static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev); 751da177e4SLinus Torvalds static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev); 761da177e4SLinus Torvalds static void mpc_timer_refresh(void); 771da177e4SLinus Torvalds static void mpc_cache_check( unsigned long checking_time ); 781da177e4SLinus Torvalds 791da177e4SLinus Torvalds static struct llc_snap_hdr llc_snap_mpoa_ctrl = { 801da177e4SLinus Torvalds 0xaa, 0xaa, 0x03, 811da177e4SLinus Torvalds {0x00, 0x00, 0x5e}, 821da177e4SLinus Torvalds {0x00, 0x03} /* For MPOA control PDUs */ 831da177e4SLinus Torvalds }; 841da177e4SLinus Torvalds static struct llc_snap_hdr llc_snap_mpoa_data = { 851da177e4SLinus Torvalds 0xaa, 0xaa, 0x03, 861da177e4SLinus Torvalds {0x00, 0x00, 0x00}, 871da177e4SLinus Torvalds {0x08, 0x00} /* This is for IP PDUs only */ 881da177e4SLinus Torvalds }; 891da177e4SLinus Torvalds static struct llc_snap_hdr llc_snap_mpoa_data_tagged = { 901da177e4SLinus Torvalds 0xaa, 0xaa, 0x03, 911da177e4SLinus Torvalds {0x00, 0x00, 0x00}, 921da177e4SLinus Torvalds {0x88, 0x4c} /* This is for tagged data PDUs */ 931da177e4SLinus Torvalds }; 941da177e4SLinus Torvalds 951da177e4SLinus Torvalds static struct notifier_block mpoa_notifier = { 961da177e4SLinus Torvalds mpoa_event_listener, 971da177e4SLinus Torvalds NULL, 981da177e4SLinus Torvalds 0 991da177e4SLinus Torvalds }; 1001da177e4SLinus Torvalds 1011da177e4SLinus Torvalds struct mpoa_client *mpcs = NULL; /* FIXME */ 1021da177e4SLinus Torvalds static struct atm_mpoa_qos *qos_head = NULL; 1038d06afabSIngo Molnar static DEFINE_TIMER(mpc_timer, NULL, 0, 0); 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvalds 1061da177e4SLinus Torvalds static struct mpoa_client *find_mpc_by_itfnum(int itf) 1071da177e4SLinus Torvalds { 1081da177e4SLinus Torvalds struct mpoa_client *mpc; 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds mpc = mpcs; /* our global linked list */ 1111da177e4SLinus Torvalds while (mpc != NULL) { 1121da177e4SLinus Torvalds if (mpc->dev_num == itf) 1131da177e4SLinus Torvalds return mpc; 1141da177e4SLinus Torvalds mpc = mpc->next; 1151da177e4SLinus Torvalds } 1161da177e4SLinus Torvalds 1171da177e4SLinus Torvalds return NULL; /* not found */ 1181da177e4SLinus Torvalds } 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds static struct mpoa_client *find_mpc_by_vcc(struct atm_vcc *vcc) 1211da177e4SLinus Torvalds { 1221da177e4SLinus Torvalds struct mpoa_client *mpc; 1231da177e4SLinus Torvalds 1241da177e4SLinus Torvalds mpc = mpcs; /* our global linked list */ 1251da177e4SLinus Torvalds while (mpc != NULL) { 1261da177e4SLinus Torvalds if (mpc->mpoad_vcc == vcc) 1271da177e4SLinus Torvalds return mpc; 1281da177e4SLinus Torvalds mpc = mpc->next; 1291da177e4SLinus Torvalds } 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds return NULL; /* not found */ 1321da177e4SLinus Torvalds } 1331da177e4SLinus Torvalds 1341da177e4SLinus Torvalds static struct mpoa_client *find_mpc_by_lec(struct net_device *dev) 1351da177e4SLinus Torvalds { 1361da177e4SLinus Torvalds struct mpoa_client *mpc; 1371da177e4SLinus Torvalds 1381da177e4SLinus Torvalds mpc = mpcs; /* our global linked list */ 1391da177e4SLinus Torvalds while (mpc != NULL) { 1401da177e4SLinus Torvalds if (mpc->dev == dev) 1411da177e4SLinus Torvalds return mpc; 1421da177e4SLinus Torvalds mpc = mpc->next; 1431da177e4SLinus Torvalds } 1441da177e4SLinus Torvalds 1451da177e4SLinus Torvalds return NULL; /* not found */ 1461da177e4SLinus Torvalds } 1471da177e4SLinus Torvalds 1481da177e4SLinus Torvalds /* 1491da177e4SLinus Torvalds * Functions for managing QoS list 1501da177e4SLinus Torvalds */ 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds /* 1531da177e4SLinus Torvalds * Overwrites the old entry or makes a new one. 1541da177e4SLinus Torvalds */ 15530d492daSAl Viro struct atm_mpoa_qos *atm_mpoa_add_qos(__be32 dst_ip, struct atm_qos *qos) 1561da177e4SLinus Torvalds { 1571da177e4SLinus Torvalds struct atm_mpoa_qos *entry; 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds entry = atm_mpoa_search_qos(dst_ip); 1601da177e4SLinus Torvalds if (entry != NULL) { 1611da177e4SLinus Torvalds entry->qos = *qos; 1621da177e4SLinus Torvalds return entry; 1631da177e4SLinus Torvalds } 1641da177e4SLinus Torvalds 1651da177e4SLinus Torvalds entry = kmalloc(sizeof(struct atm_mpoa_qos), GFP_KERNEL); 1661da177e4SLinus Torvalds if (entry == NULL) { 1671da177e4SLinus Torvalds printk("mpoa: atm_mpoa_add_qos: out of memory\n"); 1681da177e4SLinus Torvalds return entry; 1691da177e4SLinus Torvalds } 1701da177e4SLinus Torvalds 1711da177e4SLinus Torvalds entry->ipaddr = dst_ip; 1721da177e4SLinus Torvalds entry->qos = *qos; 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds entry->next = qos_head; 1751da177e4SLinus Torvalds qos_head = entry; 1761da177e4SLinus Torvalds 1771da177e4SLinus Torvalds return entry; 1781da177e4SLinus Torvalds } 1791da177e4SLinus Torvalds 18030d492daSAl Viro struct atm_mpoa_qos *atm_mpoa_search_qos(__be32 dst_ip) 1811da177e4SLinus Torvalds { 1821da177e4SLinus Torvalds struct atm_mpoa_qos *qos; 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds qos = qos_head; 1851da177e4SLinus Torvalds while( qos != NULL ){ 1861da177e4SLinus Torvalds if(qos->ipaddr == dst_ip) { 1871da177e4SLinus Torvalds break; 1881da177e4SLinus Torvalds } 1891da177e4SLinus Torvalds qos = qos->next; 1901da177e4SLinus Torvalds } 1911da177e4SLinus Torvalds 1921da177e4SLinus Torvalds return qos; 1931da177e4SLinus Torvalds } 1941da177e4SLinus Torvalds 1951da177e4SLinus Torvalds /* 1961da177e4SLinus Torvalds * Returns 0 for failure 1971da177e4SLinus Torvalds */ 1981da177e4SLinus Torvalds int atm_mpoa_delete_qos(struct atm_mpoa_qos *entry) 1991da177e4SLinus Torvalds { 2001da177e4SLinus Torvalds 2011da177e4SLinus Torvalds struct atm_mpoa_qos *curr; 2021da177e4SLinus Torvalds 2031da177e4SLinus Torvalds if (entry == NULL) return 0; 2041da177e4SLinus Torvalds if (entry == qos_head) { 2051da177e4SLinus Torvalds qos_head = qos_head->next; 2061da177e4SLinus Torvalds kfree(entry); 2071da177e4SLinus Torvalds return 1; 2081da177e4SLinus Torvalds } 2091da177e4SLinus Torvalds 2101da177e4SLinus Torvalds curr = qos_head; 2111da177e4SLinus Torvalds while (curr != NULL) { 2121da177e4SLinus Torvalds if (curr->next == entry) { 2131da177e4SLinus Torvalds curr->next = entry->next; 2141da177e4SLinus Torvalds kfree(entry); 2151da177e4SLinus Torvalds return 1; 2161da177e4SLinus Torvalds } 2171da177e4SLinus Torvalds curr = curr->next; 2181da177e4SLinus Torvalds } 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds return 0; 2211da177e4SLinus Torvalds } 2221da177e4SLinus Torvalds 2231da177e4SLinus Torvalds /* this is buggered - we need locking for qos_head */ 2241da177e4SLinus Torvalds void atm_mpoa_disp_qos(struct seq_file *m) 2251da177e4SLinus Torvalds { 2261da177e4SLinus Torvalds struct atm_mpoa_qos *qos; 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds qos = qos_head; 2291da177e4SLinus Torvalds seq_printf(m, "QoS entries for shortcuts:\n"); 2301da177e4SLinus 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"); 2311da177e4SLinus Torvalds 2321da177e4SLinus Torvalds while (qos != NULL) { 2331da177e4SLinus Torvalds seq_printf(m, "%u.%u.%u.%u\n %-7d %-7d %-7d %-7d %-7d\n %-7d %-7d %-7d %-7d %-7d\n", 234ff7512e1SAl Viro NIPQUAD(qos->ipaddr), 2351da177e4SLinus 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, 2361da177e4SLinus 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); 2371da177e4SLinus Torvalds qos = qos->next; 2381da177e4SLinus Torvalds } 2391da177e4SLinus Torvalds } 2401da177e4SLinus Torvalds 2411da177e4SLinus Torvalds static struct net_device *find_lec_by_itfnum(int itf) 2421da177e4SLinus Torvalds { 2431da177e4SLinus Torvalds struct net_device *dev; 2441da177e4SLinus Torvalds char name[IFNAMSIZ]; 2451da177e4SLinus Torvalds 2461da177e4SLinus Torvalds sprintf(name, "lec%d", itf); 247881d966bSEric W. Biederman dev = dev_get_by_name(&init_net, name); 2481da177e4SLinus Torvalds 2491da177e4SLinus Torvalds return dev; 2501da177e4SLinus Torvalds } 2511da177e4SLinus Torvalds 2521da177e4SLinus Torvalds static struct mpoa_client *alloc_mpc(void) 2531da177e4SLinus Torvalds { 2541da177e4SLinus Torvalds struct mpoa_client *mpc; 2551da177e4SLinus Torvalds 2560da974f4SPanagiotis Issaris mpc = kzalloc(sizeof (struct mpoa_client), GFP_KERNEL); 2571da177e4SLinus Torvalds if (mpc == NULL) 2581da177e4SLinus Torvalds return NULL; 2591da177e4SLinus Torvalds rwlock_init(&mpc->ingress_lock); 2601da177e4SLinus Torvalds rwlock_init(&mpc->egress_lock); 2611da177e4SLinus Torvalds mpc->next = mpcs; 2621da177e4SLinus Torvalds atm_mpoa_init_cache(mpc); 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvalds mpc->parameters.mpc_p1 = MPC_P1; 2651da177e4SLinus Torvalds mpc->parameters.mpc_p2 = MPC_P2; 2661da177e4SLinus Torvalds memset(mpc->parameters.mpc_p3,0,sizeof(mpc->parameters.mpc_p3)); 2671da177e4SLinus Torvalds mpc->parameters.mpc_p4 = MPC_P4; 2681da177e4SLinus Torvalds mpc->parameters.mpc_p5 = MPC_P5; 2691da177e4SLinus Torvalds mpc->parameters.mpc_p6 = MPC_P6; 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds mpcs = mpc; 2721da177e4SLinus Torvalds 2731da177e4SLinus Torvalds return mpc; 2741da177e4SLinus Torvalds } 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds /* 2771da177e4SLinus Torvalds * 2781da177e4SLinus Torvalds * start_mpc() puts the MPC on line. All the packets destined 2791da177e4SLinus Torvalds * to the lec underneath us are now being monitored and 2801da177e4SLinus Torvalds * shortcuts will be established. 2811da177e4SLinus Torvalds * 2821da177e4SLinus Torvalds */ 2831da177e4SLinus Torvalds static void start_mpc(struct mpoa_client *mpc, struct net_device *dev) 2841da177e4SLinus Torvalds { 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds dprintk("mpoa: (%s) start_mpc:\n", mpc->dev->name); 2871da177e4SLinus Torvalds if (dev->hard_start_xmit == NULL) { 2881da177e4SLinus Torvalds printk("mpoa: (%s) start_mpc: dev->hard_start_xmit == NULL, not starting\n", 2891da177e4SLinus Torvalds dev->name); 2901da177e4SLinus Torvalds return; 2911da177e4SLinus Torvalds } 2921da177e4SLinus Torvalds mpc->old_hard_start_xmit = dev->hard_start_xmit; 2931da177e4SLinus Torvalds dev->hard_start_xmit = mpc_send_packet; 2941da177e4SLinus Torvalds 2951da177e4SLinus Torvalds return; 2961da177e4SLinus Torvalds } 2971da177e4SLinus Torvalds 2981da177e4SLinus Torvalds static void stop_mpc(struct mpoa_client *mpc) 2991da177e4SLinus Torvalds { 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds dprintk("mpoa: (%s) stop_mpc:", mpc->dev->name); 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds /* Lets not nullify lec device's dev->hard_start_xmit */ 3041da177e4SLinus Torvalds if (mpc->dev->hard_start_xmit != mpc_send_packet) { 3051da177e4SLinus Torvalds dprintk(" mpc already stopped, not fatal\n"); 3061da177e4SLinus Torvalds return; 3071da177e4SLinus Torvalds } 3081da177e4SLinus Torvalds dprintk("\n"); 3091da177e4SLinus Torvalds mpc->dev->hard_start_xmit = mpc->old_hard_start_xmit; 3101da177e4SLinus Torvalds mpc->old_hard_start_xmit = NULL; 3111da177e4SLinus Torvalds /* close_shortcuts(mpc); ??? FIXME */ 3121da177e4SLinus Torvalds 3131da177e4SLinus Torvalds return; 3141da177e4SLinus Torvalds } 3151da177e4SLinus Torvalds 3161da177e4SLinus Torvalds static const char *mpoa_device_type_string(char type) __attribute__ ((unused)); 3171da177e4SLinus Torvalds 3181da177e4SLinus Torvalds static const char *mpoa_device_type_string(char type) 3191da177e4SLinus Torvalds { 3201da177e4SLinus Torvalds switch(type) { 3211da177e4SLinus Torvalds case NON_MPOA: 3221da177e4SLinus Torvalds return "non-MPOA device"; 3231da177e4SLinus Torvalds break; 3241da177e4SLinus Torvalds case MPS: 3251da177e4SLinus Torvalds return "MPS"; 3261da177e4SLinus Torvalds break; 3271da177e4SLinus Torvalds case MPC: 3281da177e4SLinus Torvalds return "MPC"; 3291da177e4SLinus Torvalds break; 3301da177e4SLinus Torvalds case MPS_AND_MPC: 3311da177e4SLinus Torvalds return "both MPS and MPC"; 3321da177e4SLinus Torvalds break; 3331da177e4SLinus Torvalds default: 3341da177e4SLinus Torvalds return "unspecified (non-MPOA) device"; 3351da177e4SLinus Torvalds break; 3361da177e4SLinus Torvalds } 3371da177e4SLinus Torvalds 3381da177e4SLinus Torvalds return ""; /* not reached */ 3391da177e4SLinus Torvalds } 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds /* 3421da177e4SLinus Torvalds * lec device calls this via its dev->priv->lane2_ops->associate_indicator() 3431da177e4SLinus Torvalds * when it sees a TLV in LE_ARP packet. 3441da177e4SLinus Torvalds * We fill in the pointer above when we see a LANE2 lec initializing 3451da177e4SLinus Torvalds * See LANE2 spec 3.1.5 3461da177e4SLinus Torvalds * 3471da177e4SLinus Torvalds * Quite a big and ugly function but when you look at it 3481da177e4SLinus Torvalds * all it does is to try to locate and parse MPOA Device 3491da177e4SLinus Torvalds * Type TLV. 3501da177e4SLinus Torvalds * We give our lec a pointer to this function and when the 3511da177e4SLinus Torvalds * lec sees a TLV it uses the pointer to call this function. 3521da177e4SLinus Torvalds * 3531da177e4SLinus Torvalds */ 3541da177e4SLinus Torvalds static void lane2_assoc_ind(struct net_device *dev, uint8_t *mac_addr, 3551da177e4SLinus Torvalds uint8_t *tlvs, uint32_t sizeoftlvs) 3561da177e4SLinus Torvalds { 3571da177e4SLinus Torvalds uint32_t type; 3581da177e4SLinus Torvalds uint8_t length, mpoa_device_type, number_of_mps_macs; 3591da177e4SLinus Torvalds uint8_t *end_of_tlvs; 3601da177e4SLinus Torvalds struct mpoa_client *mpc; 3611da177e4SLinus Torvalds 3621da177e4SLinus Torvalds mpoa_device_type = number_of_mps_macs = 0; /* silence gcc */ 3631da177e4SLinus Torvalds dprintk("mpoa: (%s) lane2_assoc_ind: received TLV(s), ", dev->name); 3641da177e4SLinus Torvalds dprintk("total length of all TLVs %d\n", sizeoftlvs); 3651da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); /* Sampo-Fix: moved here from below */ 3661da177e4SLinus Torvalds if (mpc == NULL) { 3671da177e4SLinus Torvalds printk("mpoa: (%s) lane2_assoc_ind: no mpc\n", dev->name); 3681da177e4SLinus Torvalds return; 3691da177e4SLinus Torvalds } 3701da177e4SLinus Torvalds end_of_tlvs = tlvs + sizeoftlvs; 3711da177e4SLinus Torvalds while (end_of_tlvs - tlvs >= 5) { 3721da177e4SLinus Torvalds type = (tlvs[0] << 24) | (tlvs[1] << 16) | (tlvs[2] << 8) | tlvs[3]; 3731da177e4SLinus Torvalds length = tlvs[4]; 3741da177e4SLinus Torvalds tlvs += 5; 3751da177e4SLinus Torvalds dprintk(" type 0x%x length %02x\n", type, length); 3761da177e4SLinus Torvalds if (tlvs + length > end_of_tlvs) { 3771da177e4SLinus Torvalds printk("TLV value extends past its buffer, aborting parse\n"); 3781da177e4SLinus Torvalds return; 3791da177e4SLinus Torvalds } 3801da177e4SLinus Torvalds 3811da177e4SLinus Torvalds if (type == 0) { 3821da177e4SLinus Torvalds printk("mpoa: (%s) lane2_assoc_ind: TLV type was 0, returning\n", dev->name); 3831da177e4SLinus Torvalds return; 3841da177e4SLinus Torvalds } 3851da177e4SLinus Torvalds 3861da177e4SLinus Torvalds if (type != TLV_MPOA_DEVICE_TYPE) { 3871da177e4SLinus Torvalds tlvs += length; 3881da177e4SLinus Torvalds continue; /* skip other TLVs */ 3891da177e4SLinus Torvalds } 3901da177e4SLinus Torvalds mpoa_device_type = *tlvs++; 3911da177e4SLinus Torvalds number_of_mps_macs = *tlvs++; 3921da177e4SLinus Torvalds dprintk("mpoa: (%s) MPOA device type '%s', ", dev->name, mpoa_device_type_string(mpoa_device_type)); 3931da177e4SLinus Torvalds if (mpoa_device_type == MPS_AND_MPC && 3941da177e4SLinus Torvalds length < (42 + number_of_mps_macs*ETH_ALEN)) { /* :) */ 3951da177e4SLinus Torvalds printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", 3961da177e4SLinus Torvalds dev->name); 3971da177e4SLinus Torvalds continue; 3981da177e4SLinus Torvalds } 3991da177e4SLinus Torvalds if ((mpoa_device_type == MPS || mpoa_device_type == MPC) 4001da177e4SLinus Torvalds && length < 22 + number_of_mps_macs*ETH_ALEN) { 4011da177e4SLinus Torvalds printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n", 4021da177e4SLinus Torvalds dev->name); 4031da177e4SLinus Torvalds continue; 4041da177e4SLinus Torvalds } 4051da177e4SLinus Torvalds if (mpoa_device_type != MPS && mpoa_device_type != MPS_AND_MPC) { 4061da177e4SLinus Torvalds dprintk("ignoring non-MPS device\n"); 4071da177e4SLinus Torvalds if (mpoa_device_type == MPC) tlvs += 20; 4081da177e4SLinus Torvalds continue; /* we are only interested in MPSs */ 4091da177e4SLinus Torvalds } 4101da177e4SLinus Torvalds if (number_of_mps_macs == 0 && mpoa_device_type == MPS_AND_MPC) { 4111da177e4SLinus Torvalds printk("\nmpoa: (%s) lane2_assoc_ind: MPS_AND_MPC has zero MACs\n", dev->name); 4121da177e4SLinus Torvalds continue; /* someone should read the spec */ 4131da177e4SLinus Torvalds } 4141da177e4SLinus Torvalds dprintk("this MPS has %d MAC addresses\n", number_of_mps_macs); 4151da177e4SLinus Torvalds 4161da177e4SLinus Torvalds /* ok, now we can go and tell our daemon the control address of MPS */ 4171da177e4SLinus Torvalds send_set_mps_ctrl_addr(tlvs, mpc); 4181da177e4SLinus Torvalds 4191da177e4SLinus Torvalds tlvs = copy_macs(mpc, mac_addr, tlvs, number_of_mps_macs, mpoa_device_type); 4201da177e4SLinus Torvalds if (tlvs == NULL) return; 4211da177e4SLinus Torvalds } 4221da177e4SLinus Torvalds if (end_of_tlvs - tlvs != 0) 4231da177e4SLinus Torvalds printk("mpoa: (%s) lane2_assoc_ind: ignoring %Zd bytes of trailing TLV carbage\n", 4241da177e4SLinus Torvalds dev->name, end_of_tlvs - tlvs); 4251da177e4SLinus Torvalds return; 4261da177e4SLinus Torvalds } 4271da177e4SLinus Torvalds 4281da177e4SLinus Torvalds /* 4291da177e4SLinus Torvalds * Store at least advertizing router's MAC address 4301da177e4SLinus Torvalds * plus the possible MAC address(es) to mpc->mps_macs. 4311da177e4SLinus Torvalds * For a freshly allocated MPOA client mpc->mps_macs == 0. 4321da177e4SLinus Torvalds */ 4331da177e4SLinus Torvalds static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac, 4341da177e4SLinus Torvalds uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type) 4351da177e4SLinus Torvalds { 4361da177e4SLinus Torvalds int num_macs; 4371da177e4SLinus Torvalds num_macs = (mps_macs > 1) ? mps_macs : 1; 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvalds if (mpc->number_of_mps_macs != num_macs) { /* need to reallocate? */ 4401da177e4SLinus Torvalds if (mpc->number_of_mps_macs != 0) kfree(mpc->mps_macs); 4411da177e4SLinus Torvalds mpc->number_of_mps_macs = 0; 4421da177e4SLinus Torvalds mpc->mps_macs = kmalloc(num_macs*ETH_ALEN, GFP_KERNEL); 4431da177e4SLinus Torvalds if (mpc->mps_macs == NULL) { 4441da177e4SLinus Torvalds printk("mpoa: (%s) copy_macs: out of mem\n", mpc->dev->name); 4451da177e4SLinus Torvalds return NULL; 4461da177e4SLinus Torvalds } 4471da177e4SLinus Torvalds } 4481da177e4SLinus Torvalds memcpy(mpc->mps_macs, router_mac, ETH_ALEN); 4491da177e4SLinus Torvalds tlvs += 20; if (device_type == MPS_AND_MPC) tlvs += 20; 4501da177e4SLinus Torvalds if (mps_macs > 0) 4511da177e4SLinus Torvalds memcpy(mpc->mps_macs, tlvs, mps_macs*ETH_ALEN); 4521da177e4SLinus Torvalds tlvs += mps_macs*ETH_ALEN; 4531da177e4SLinus Torvalds mpc->number_of_mps_macs = num_macs; 4541da177e4SLinus Torvalds 4551da177e4SLinus Torvalds return tlvs; 4561da177e4SLinus Torvalds } 4571da177e4SLinus Torvalds 4581da177e4SLinus Torvalds static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc) 4591da177e4SLinus Torvalds { 4601da177e4SLinus Torvalds in_cache_entry *entry; 4611da177e4SLinus Torvalds struct iphdr *iph; 4621da177e4SLinus Torvalds char *buff; 46330d492daSAl Viro __be32 ipaddr = 0; 4641da177e4SLinus Torvalds 4651da177e4SLinus Torvalds static struct { 4661da177e4SLinus Torvalds struct llc_snap_hdr hdr; 46730d492daSAl Viro __be32 tag; 4681da177e4SLinus Torvalds } tagged_llc_snap_hdr = { 4691da177e4SLinus Torvalds {0xaa, 0xaa, 0x03, {0x00, 0x00, 0x00}, {0x88, 0x4c}}, 4701da177e4SLinus Torvalds 0 4711da177e4SLinus Torvalds }; 4721da177e4SLinus Torvalds 4731da177e4SLinus Torvalds buff = skb->data + mpc->dev->hard_header_len; 4741da177e4SLinus Torvalds iph = (struct iphdr *)buff; 4751da177e4SLinus Torvalds ipaddr = iph->daddr; 4761da177e4SLinus Torvalds 4771da177e4SLinus Torvalds ddprintk("mpoa: (%s) send_via_shortcut: ipaddr 0x%x\n", mpc->dev->name, ipaddr); 4781da177e4SLinus Torvalds 4791da177e4SLinus Torvalds entry = mpc->in_ops->get(ipaddr, mpc); 4801da177e4SLinus Torvalds if (entry == NULL) { 4811da177e4SLinus Torvalds entry = mpc->in_ops->add_entry(ipaddr, mpc); 4821da177e4SLinus Torvalds if (entry != NULL) mpc->in_ops->put(entry); 4831da177e4SLinus Torvalds return 1; 4841da177e4SLinus Torvalds } 4851da177e4SLinus Torvalds if (mpc->in_ops->cache_hit(entry, mpc) != OPEN){ /* threshold not exceeded or VCC not ready */ 4861da177e4SLinus Torvalds ddprintk("mpoa: (%s) send_via_shortcut: cache_hit: returns != OPEN\n", mpc->dev->name); 4871da177e4SLinus Torvalds mpc->in_ops->put(entry); 4881da177e4SLinus Torvalds return 1; 4891da177e4SLinus Torvalds } 4901da177e4SLinus Torvalds 4911da177e4SLinus Torvalds ddprintk("mpoa: (%s) send_via_shortcut: using shortcut\n", mpc->dev->name); 4921da177e4SLinus Torvalds /* MPOA spec A.1.4, MPOA client must decrement IP ttl at least by one */ 4931da177e4SLinus Torvalds if (iph->ttl <= 1) { 4941da177e4SLinus Torvalds ddprintk("mpoa: (%s) send_via_shortcut: IP ttl = %u, using LANE\n", mpc->dev->name, iph->ttl); 4951da177e4SLinus Torvalds mpc->in_ops->put(entry); 4961da177e4SLinus Torvalds return 1; 4971da177e4SLinus Torvalds } 4981da177e4SLinus Torvalds iph->ttl--; 4991da177e4SLinus Torvalds iph->check = 0; 5001da177e4SLinus Torvalds iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); 5011da177e4SLinus Torvalds 5021da177e4SLinus Torvalds if (entry->ctrl_info.tag != 0) { 5031da177e4SLinus Torvalds ddprintk("mpoa: (%s) send_via_shortcut: adding tag 0x%x\n", mpc->dev->name, entry->ctrl_info.tag); 5041da177e4SLinus Torvalds tagged_llc_snap_hdr.tag = entry->ctrl_info.tag; 5051da177e4SLinus Torvalds skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ 5061da177e4SLinus Torvalds skb_push(skb, sizeof(tagged_llc_snap_hdr)); /* add LLC/SNAP header */ 50727d7ff46SArnaldo Carvalho de Melo skb_copy_to_linear_data(skb, &tagged_llc_snap_hdr, 50827d7ff46SArnaldo Carvalho de Melo sizeof(tagged_llc_snap_hdr)); 5091da177e4SLinus Torvalds } else { 5101da177e4SLinus Torvalds skb_pull(skb, ETH_HLEN); /* get rid of Eth header */ 5111da177e4SLinus Torvalds skb_push(skb, sizeof(struct llc_snap_hdr)); /* add LLC/SNAP header + tag */ 51227d7ff46SArnaldo Carvalho de Melo skb_copy_to_linear_data(skb, &llc_snap_mpoa_data, 51327d7ff46SArnaldo Carvalho de Melo sizeof(struct llc_snap_hdr)); 5141da177e4SLinus Torvalds } 5151da177e4SLinus Torvalds 5161da177e4SLinus Torvalds atomic_add(skb->truesize, &sk_atm(entry->shortcut)->sk_wmem_alloc); 5171da177e4SLinus Torvalds ATM_SKB(skb)->atm_options = entry->shortcut->atm_options; 5181da177e4SLinus Torvalds entry->shortcut->send(entry->shortcut, skb); 5191da177e4SLinus Torvalds entry->packets_fwded++; 5201da177e4SLinus Torvalds mpc->in_ops->put(entry); 5211da177e4SLinus Torvalds 5221da177e4SLinus Torvalds return 0; 5231da177e4SLinus Torvalds } 5241da177e4SLinus Torvalds 5251da177e4SLinus Torvalds /* 5261da177e4SLinus Torvalds * Probably needs some error checks and locking, not sure... 5271da177e4SLinus Torvalds */ 5281da177e4SLinus Torvalds static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev) 5291da177e4SLinus Torvalds { 5301da177e4SLinus Torvalds int retval; 5311da177e4SLinus Torvalds struct mpoa_client *mpc; 5321da177e4SLinus Torvalds struct ethhdr *eth; 5331da177e4SLinus Torvalds int i = 0; 5341da177e4SLinus Torvalds 5351da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); /* this should NEVER fail */ 5361da177e4SLinus Torvalds if(mpc == NULL) { 5371da177e4SLinus Torvalds printk("mpoa: (%s) mpc_send_packet: no MPC found\n", dev->name); 5381da177e4SLinus Torvalds goto non_ip; 5391da177e4SLinus Torvalds } 5401da177e4SLinus Torvalds 5411da177e4SLinus Torvalds eth = (struct ethhdr *)skb->data; 5421da177e4SLinus Torvalds if (eth->h_proto != htons(ETH_P_IP)) 5431da177e4SLinus Torvalds goto non_ip; /* Multi-Protocol Over ATM :-) */ 5441da177e4SLinus Torvalds 5451c9b7aa1SHerbert Xu /* Weed out funny packets (e.g., AF_PACKET or raw). */ 5461c9b7aa1SHerbert Xu if (skb->len < ETH_HLEN + sizeof(struct iphdr)) 5471c9b7aa1SHerbert Xu goto non_ip; 5481c9b7aa1SHerbert Xu skb_set_network_header(skb, ETH_HLEN); 5491c9b7aa1SHerbert Xu if (skb->len < ETH_HLEN + ip_hdr(skb)->ihl * 4 || ip_hdr(skb)->ihl < 5) 5501c9b7aa1SHerbert Xu goto non_ip; 5511c9b7aa1SHerbert Xu 5521da177e4SLinus Torvalds while (i < mpc->number_of_mps_macs) { 553d3f4a687SKris Katterjohn if (!compare_ether_addr(eth->h_dest, (mpc->mps_macs + i*ETH_ALEN))) 5541da177e4SLinus Torvalds if ( send_via_shortcut(skb, mpc) == 0 ) /* try shortcut */ 5551da177e4SLinus Torvalds return 0; /* success! */ 5561da177e4SLinus Torvalds i++; 5571da177e4SLinus Torvalds } 5581da177e4SLinus Torvalds 5591da177e4SLinus Torvalds non_ip: 5601da177e4SLinus Torvalds retval = mpc->old_hard_start_xmit(skb,dev); 5611da177e4SLinus Torvalds 5621da177e4SLinus Torvalds return retval; 5631da177e4SLinus Torvalds } 5641da177e4SLinus Torvalds 5651da177e4SLinus Torvalds static int atm_mpoa_vcc_attach(struct atm_vcc *vcc, void __user *arg) 5661da177e4SLinus Torvalds { 5671da177e4SLinus Torvalds int bytes_left; 5681da177e4SLinus Torvalds struct mpoa_client *mpc; 5691da177e4SLinus Torvalds struct atmmpc_ioc ioc_data; 5701da177e4SLinus Torvalds in_cache_entry *in_entry; 57130d492daSAl Viro __be32 ipaddr; 5721da177e4SLinus Torvalds 5731da177e4SLinus Torvalds bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmmpc_ioc)); 5741da177e4SLinus Torvalds if (bytes_left != 0) { 5751da177e4SLinus Torvalds printk("mpoa: mpc_vcc_attach: Short read (missed %d bytes) from userland\n", bytes_left); 5761da177e4SLinus Torvalds return -EFAULT; 5771da177e4SLinus Torvalds } 5781da177e4SLinus Torvalds ipaddr = ioc_data.ipaddr; 5791da177e4SLinus Torvalds if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF) 5801da177e4SLinus Torvalds return -EINVAL; 5811da177e4SLinus Torvalds 5821da177e4SLinus Torvalds mpc = find_mpc_by_itfnum(ioc_data.dev_num); 5831da177e4SLinus Torvalds if (mpc == NULL) 5841da177e4SLinus Torvalds return -EINVAL; 5851da177e4SLinus Torvalds 5861da177e4SLinus Torvalds if (ioc_data.type == MPC_SOCKET_INGRESS) { 5871da177e4SLinus Torvalds in_entry = mpc->in_ops->get(ipaddr, mpc); 5881da177e4SLinus Torvalds if (in_entry == NULL || in_entry->entry_state < INGRESS_RESOLVED) { 5891da177e4SLinus Torvalds printk("mpoa: (%s) mpc_vcc_attach: did not find RESOLVED entry from ingress cache\n", 5901da177e4SLinus Torvalds mpc->dev->name); 5911da177e4SLinus Torvalds if (in_entry != NULL) mpc->in_ops->put(in_entry); 5921da177e4SLinus Torvalds return -EINVAL; 5931da177e4SLinus Torvalds } 5941da177e4SLinus Torvalds printk("mpoa: (%s) mpc_vcc_attach: attaching ingress SVC, entry = %u.%u.%u.%u\n", 595b4229934SAl Viro mpc->dev->name, NIPQUAD(in_entry->ctrl_info.in_dst_ip)); 5961da177e4SLinus Torvalds in_entry->shortcut = vcc; 5971da177e4SLinus Torvalds mpc->in_ops->put(in_entry); 5981da177e4SLinus Torvalds } else { 5991da177e4SLinus Torvalds printk("mpoa: (%s) mpc_vcc_attach: attaching egress SVC\n", mpc->dev->name); 6001da177e4SLinus Torvalds } 6011da177e4SLinus Torvalds 6021da177e4SLinus Torvalds vcc->proto_data = mpc->dev; 6031da177e4SLinus Torvalds vcc->push = mpc_push; 6041da177e4SLinus Torvalds 6051da177e4SLinus Torvalds return 0; 6061da177e4SLinus Torvalds } 6071da177e4SLinus Torvalds 6081da177e4SLinus Torvalds /* 6091da177e4SLinus Torvalds * 6101da177e4SLinus Torvalds */ 6111da177e4SLinus Torvalds static void mpc_vcc_close(struct atm_vcc *vcc, struct net_device *dev) 6121da177e4SLinus Torvalds { 6131da177e4SLinus Torvalds struct mpoa_client *mpc; 6141da177e4SLinus Torvalds in_cache_entry *in_entry; 6151da177e4SLinus Torvalds eg_cache_entry *eg_entry; 6161da177e4SLinus Torvalds 6171da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); 6181da177e4SLinus Torvalds if (mpc == NULL) { 6191da177e4SLinus Torvalds printk("mpoa: (%s) mpc_vcc_close: close for unknown MPC\n", dev->name); 6201da177e4SLinus Torvalds return; 6211da177e4SLinus Torvalds } 6221da177e4SLinus Torvalds 6231da177e4SLinus Torvalds dprintk("mpoa: (%s) mpc_vcc_close:\n", dev->name); 6241da177e4SLinus Torvalds in_entry = mpc->in_ops->get_by_vcc(vcc, mpc); 6251da177e4SLinus Torvalds if (in_entry) { 6261da177e4SLinus Torvalds dprintk("mpoa: (%s) mpc_vcc_close: ingress SVC closed ip = %u.%u.%u.%u\n", 627b4229934SAl Viro mpc->dev->name, NIPQUAD(in_entry->ctrl_info.in_dst_ip)); 6281da177e4SLinus Torvalds in_entry->shortcut = NULL; 6291da177e4SLinus Torvalds mpc->in_ops->put(in_entry); 6301da177e4SLinus Torvalds } 6311da177e4SLinus Torvalds eg_entry = mpc->eg_ops->get_by_vcc(vcc, mpc); 6321da177e4SLinus Torvalds if (eg_entry) { 6331da177e4SLinus Torvalds dprintk("mpoa: (%s) mpc_vcc_close: egress SVC closed\n", mpc->dev->name); 6341da177e4SLinus Torvalds eg_entry->shortcut = NULL; 6351da177e4SLinus Torvalds mpc->eg_ops->put(eg_entry); 6361da177e4SLinus Torvalds } 6371da177e4SLinus Torvalds 6381da177e4SLinus Torvalds if (in_entry == NULL && eg_entry == NULL) 6391da177e4SLinus Torvalds dprintk("mpoa: (%s) mpc_vcc_close: unused vcc closed\n", dev->name); 6401da177e4SLinus Torvalds 6411da177e4SLinus Torvalds return; 6421da177e4SLinus Torvalds } 6431da177e4SLinus Torvalds 6441da177e4SLinus Torvalds static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb) 6451da177e4SLinus Torvalds { 6461da177e4SLinus Torvalds struct net_device *dev = (struct net_device *)vcc->proto_data; 6471da177e4SLinus Torvalds struct sk_buff *new_skb; 6481da177e4SLinus Torvalds eg_cache_entry *eg; 6491da177e4SLinus Torvalds struct mpoa_client *mpc; 65030d492daSAl Viro __be32 tag; 6511da177e4SLinus Torvalds char *tmp; 6521da177e4SLinus Torvalds 6531da177e4SLinus Torvalds ddprintk("mpoa: (%s) mpc_push:\n", dev->name); 6541da177e4SLinus Torvalds if (skb == NULL) { 6551da177e4SLinus Torvalds dprintk("mpoa: (%s) mpc_push: null skb, closing VCC\n", dev->name); 6561da177e4SLinus Torvalds mpc_vcc_close(vcc, dev); 6571da177e4SLinus Torvalds return; 6581da177e4SLinus Torvalds } 6591da177e4SLinus Torvalds 6601da177e4SLinus Torvalds skb->dev = dev; 6611da177e4SLinus Torvalds if (memcmp(skb->data, &llc_snap_mpoa_ctrl, sizeof(struct llc_snap_hdr)) == 0) { 6621da177e4SLinus Torvalds struct sock *sk = sk_atm(vcc); 6631da177e4SLinus Torvalds 6641da177e4SLinus Torvalds dprintk("mpoa: (%s) mpc_push: control packet arrived\n", dev->name); 6651da177e4SLinus Torvalds /* Pass control packets to daemon */ 6661da177e4SLinus Torvalds skb_queue_tail(&sk->sk_receive_queue, skb); 6671da177e4SLinus Torvalds sk->sk_data_ready(sk, skb->len); 6681da177e4SLinus Torvalds return; 6691da177e4SLinus Torvalds } 6701da177e4SLinus Torvalds 6711da177e4SLinus Torvalds /* data coming over the shortcut */ 6721da177e4SLinus Torvalds atm_return(vcc, skb->truesize); 6731da177e4SLinus Torvalds 6741da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); 6751da177e4SLinus Torvalds if (mpc == NULL) { 6761da177e4SLinus Torvalds printk("mpoa: (%s) mpc_push: unknown MPC\n", dev->name); 6771da177e4SLinus Torvalds return; 6781da177e4SLinus Torvalds } 6791da177e4SLinus Torvalds 6801da177e4SLinus Torvalds if (memcmp(skb->data, &llc_snap_mpoa_data_tagged, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA tagged data */ 6811da177e4SLinus Torvalds ddprintk("mpoa: (%s) mpc_push: tagged data packet arrived\n", dev->name); 6821da177e4SLinus Torvalds 6831da177e4SLinus Torvalds } else if (memcmp(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA data */ 6841da177e4SLinus Torvalds printk("mpoa: (%s) mpc_push: non-tagged data packet arrived\n", dev->name); 6851da177e4SLinus Torvalds printk(" mpc_push: non-tagged data unsupported, purging\n"); 6861da177e4SLinus Torvalds dev_kfree_skb_any(skb); 6871da177e4SLinus Torvalds return; 6881da177e4SLinus Torvalds } else { 6891da177e4SLinus Torvalds printk("mpoa: (%s) mpc_push: garbage arrived, purging\n", dev->name); 6901da177e4SLinus Torvalds dev_kfree_skb_any(skb); 6911da177e4SLinus Torvalds return; 6921da177e4SLinus Torvalds } 6931da177e4SLinus Torvalds 6941da177e4SLinus Torvalds tmp = skb->data + sizeof(struct llc_snap_hdr); 69530d492daSAl Viro tag = *(__be32 *)tmp; 6961da177e4SLinus Torvalds 6971da177e4SLinus Torvalds eg = mpc->eg_ops->get_by_tag(tag, mpc); 6981da177e4SLinus Torvalds if (eg == NULL) { 6991da177e4SLinus Torvalds printk("mpoa: (%s) mpc_push: Didn't find egress cache entry, tag = %u\n", 7001da177e4SLinus Torvalds dev->name,tag); 7011da177e4SLinus Torvalds purge_egress_shortcut(vcc, NULL); 7021da177e4SLinus Torvalds dev_kfree_skb_any(skb); 7031da177e4SLinus Torvalds return; 7041da177e4SLinus Torvalds } 7051da177e4SLinus Torvalds 7061da177e4SLinus Torvalds /* 7071da177e4SLinus Torvalds * See if ingress MPC is using shortcut we opened as a return channel. 7081da177e4SLinus Torvalds * This means we have a bi-directional vcc opened by us. 7091da177e4SLinus Torvalds */ 7101da177e4SLinus Torvalds if (eg->shortcut == NULL) { 7111da177e4SLinus Torvalds eg->shortcut = vcc; 7121da177e4SLinus Torvalds printk("mpoa: (%s) mpc_push: egress SVC in use\n", dev->name); 7131da177e4SLinus Torvalds } 7141da177e4SLinus Torvalds 7151da177e4SLinus Torvalds skb_pull(skb, sizeof(struct llc_snap_hdr) + sizeof(tag)); /* get rid of LLC/SNAP header */ 7161da177e4SLinus Torvalds new_skb = skb_realloc_headroom(skb, eg->ctrl_info.DH_length); /* LLC/SNAP is shorter than MAC header :( */ 7171da177e4SLinus Torvalds dev_kfree_skb_any(skb); 7181da177e4SLinus Torvalds if (new_skb == NULL){ 7191da177e4SLinus Torvalds mpc->eg_ops->put(eg); 7201da177e4SLinus Torvalds return; 7211da177e4SLinus Torvalds } 7221da177e4SLinus Torvalds skb_push(new_skb, eg->ctrl_info.DH_length); /* add MAC header */ 72327d7ff46SArnaldo Carvalho de Melo skb_copy_to_linear_data(new_skb, eg->ctrl_info.DLL_header, 72427d7ff46SArnaldo Carvalho de Melo eg->ctrl_info.DH_length); 7251da177e4SLinus Torvalds new_skb->protocol = eth_type_trans(new_skb, dev); 726c1d2bbe1SArnaldo Carvalho de Melo skb_reset_network_header(new_skb); 7271da177e4SLinus Torvalds 728eddc9ec5SArnaldo Carvalho de Melo eg->latest_ip_addr = ip_hdr(new_skb)->saddr; 7291da177e4SLinus Torvalds eg->packets_rcvd++; 7301da177e4SLinus Torvalds mpc->eg_ops->put(eg); 7311da177e4SLinus Torvalds 7321da177e4SLinus Torvalds memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data)); 7331da177e4SLinus Torvalds netif_rx(new_skb); 7341da177e4SLinus Torvalds 7351da177e4SLinus Torvalds return; 7361da177e4SLinus Torvalds } 7371da177e4SLinus Torvalds 7381da177e4SLinus Torvalds static struct atmdev_ops mpc_ops = { /* only send is required */ 7391da177e4SLinus Torvalds .close = mpoad_close, 7401da177e4SLinus Torvalds .send = msg_from_mpoad 7411da177e4SLinus Torvalds }; 7421da177e4SLinus Torvalds 7431da177e4SLinus Torvalds static struct atm_dev mpc_dev = { 7441da177e4SLinus Torvalds .ops = &mpc_ops, 7451da177e4SLinus Torvalds .type = "mpc", 7461da177e4SLinus Torvalds .number = 42, 7474ef8d0aeSMilind Arun Choudhary .lock = __SPIN_LOCK_UNLOCKED(mpc_dev.lock) 7481da177e4SLinus Torvalds /* members not explicitly initialised will be 0 */ 7491da177e4SLinus Torvalds }; 7501da177e4SLinus Torvalds 7511da177e4SLinus Torvalds static int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg) 7521da177e4SLinus Torvalds { 7531da177e4SLinus Torvalds struct mpoa_client *mpc; 7541da177e4SLinus Torvalds struct lec_priv *priv; 7551da177e4SLinus Torvalds int err; 7561da177e4SLinus Torvalds 7571da177e4SLinus Torvalds if (mpcs == NULL) { 7581da177e4SLinus Torvalds init_timer(&mpc_timer); 7591da177e4SLinus Torvalds mpc_timer_refresh(); 7601da177e4SLinus Torvalds 7611da177e4SLinus Torvalds /* This lets us now how our LECs are doing */ 7621da177e4SLinus Torvalds err = register_netdevice_notifier(&mpoa_notifier); 7631da177e4SLinus Torvalds if (err < 0) { 7641da177e4SLinus Torvalds del_timer(&mpc_timer); 7651da177e4SLinus Torvalds return err; 7661da177e4SLinus Torvalds } 7671da177e4SLinus Torvalds } 7681da177e4SLinus Torvalds 7691da177e4SLinus Torvalds mpc = find_mpc_by_itfnum(arg); 7701da177e4SLinus Torvalds if (mpc == NULL) { 7711da177e4SLinus Torvalds dprintk("mpoa: mpoad_attach: allocating new mpc for itf %d\n", arg); 7721da177e4SLinus Torvalds mpc = alloc_mpc(); 7731da177e4SLinus Torvalds if (mpc == NULL) 7741da177e4SLinus Torvalds return -ENOMEM; 7751da177e4SLinus Torvalds mpc->dev_num = arg; 7761da177e4SLinus Torvalds mpc->dev = find_lec_by_itfnum(arg); /* NULL if there was no lec */ 7771da177e4SLinus Torvalds } 7781da177e4SLinus Torvalds if (mpc->mpoad_vcc) { 7791da177e4SLinus Torvalds printk("mpoa: mpoad_attach: mpoad is already present for itf %d\n", arg); 7801da177e4SLinus Torvalds return -EADDRINUSE; 7811da177e4SLinus Torvalds } 7821da177e4SLinus Torvalds 7831da177e4SLinus Torvalds if (mpc->dev) { /* check if the lec is LANE2 capable */ 7841da177e4SLinus Torvalds priv = (struct lec_priv *)mpc->dev->priv; 7851da177e4SLinus Torvalds if (priv->lane_version < 2) { 7861da177e4SLinus Torvalds dev_put(mpc->dev); 7871da177e4SLinus Torvalds mpc->dev = NULL; 7881da177e4SLinus Torvalds } else 7891da177e4SLinus Torvalds priv->lane2_ops->associate_indicator = lane2_assoc_ind; 7901da177e4SLinus Torvalds } 7911da177e4SLinus Torvalds 7921da177e4SLinus Torvalds mpc->mpoad_vcc = vcc; 7931da177e4SLinus Torvalds vcc->dev = &mpc_dev; 7941da177e4SLinus Torvalds vcc_insert_socket(sk_atm(vcc)); 7951da177e4SLinus Torvalds set_bit(ATM_VF_META,&vcc->flags); 7961da177e4SLinus Torvalds set_bit(ATM_VF_READY,&vcc->flags); 7971da177e4SLinus Torvalds 7981da177e4SLinus Torvalds if (mpc->dev) { 7991da177e4SLinus Torvalds char empty[ATM_ESA_LEN]; 8001da177e4SLinus Torvalds memset(empty, 0, ATM_ESA_LEN); 8011da177e4SLinus Torvalds 8021da177e4SLinus Torvalds start_mpc(mpc, mpc->dev); 8031da177e4SLinus Torvalds /* set address if mpcd e.g. gets killed and restarted. 8041da177e4SLinus Torvalds * If we do not do it now we have to wait for the next LE_ARP 8051da177e4SLinus Torvalds */ 8061da177e4SLinus Torvalds if ( memcmp(mpc->mps_ctrl_addr, empty, ATM_ESA_LEN) != 0 ) 8071da177e4SLinus Torvalds send_set_mps_ctrl_addr(mpc->mps_ctrl_addr, mpc); 8081da177e4SLinus Torvalds } 8091da177e4SLinus Torvalds 8101da177e4SLinus Torvalds __module_get(THIS_MODULE); 8111da177e4SLinus Torvalds return arg; 8121da177e4SLinus Torvalds } 8131da177e4SLinus Torvalds 8141da177e4SLinus Torvalds static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc) 8151da177e4SLinus Torvalds { 8161da177e4SLinus Torvalds struct k_message mesg; 8171da177e4SLinus Torvalds 8181da177e4SLinus Torvalds memcpy (mpc->mps_ctrl_addr, addr, ATM_ESA_LEN); 8191da177e4SLinus Torvalds 8201da177e4SLinus Torvalds mesg.type = SET_MPS_CTRL_ADDR; 8211da177e4SLinus Torvalds memcpy(mesg.MPS_ctrl, addr, ATM_ESA_LEN); 8221da177e4SLinus Torvalds msg_to_mpoad(&mesg, mpc); 8231da177e4SLinus Torvalds 8241da177e4SLinus Torvalds return; 8251da177e4SLinus Torvalds } 8261da177e4SLinus Torvalds 8271da177e4SLinus Torvalds static void mpoad_close(struct atm_vcc *vcc) 8281da177e4SLinus Torvalds { 8291da177e4SLinus Torvalds struct mpoa_client *mpc; 8301da177e4SLinus Torvalds struct sk_buff *skb; 8311da177e4SLinus Torvalds 8321da177e4SLinus Torvalds mpc = find_mpc_by_vcc(vcc); 8331da177e4SLinus Torvalds if (mpc == NULL) { 8341da177e4SLinus Torvalds printk("mpoa: mpoad_close: did not find MPC\n"); 8351da177e4SLinus Torvalds return; 8361da177e4SLinus Torvalds } 8371da177e4SLinus Torvalds if (!mpc->mpoad_vcc) { 8381da177e4SLinus Torvalds printk("mpoa: mpoad_close: close for non-present mpoad\n"); 8391da177e4SLinus Torvalds return; 8401da177e4SLinus Torvalds } 8411da177e4SLinus Torvalds 8421da177e4SLinus Torvalds mpc->mpoad_vcc = NULL; 8431da177e4SLinus Torvalds if (mpc->dev) { 8441da177e4SLinus Torvalds struct lec_priv *priv = (struct lec_priv *)mpc->dev->priv; 8451da177e4SLinus Torvalds priv->lane2_ops->associate_indicator = NULL; 8461da177e4SLinus Torvalds stop_mpc(mpc); 8471da177e4SLinus Torvalds dev_put(mpc->dev); 8481da177e4SLinus Torvalds } 8491da177e4SLinus Torvalds 8501da177e4SLinus Torvalds mpc->in_ops->destroy_cache(mpc); 8511da177e4SLinus Torvalds mpc->eg_ops->destroy_cache(mpc); 8521da177e4SLinus Torvalds 8531da177e4SLinus Torvalds while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue))) { 8541da177e4SLinus Torvalds atm_return(vcc, skb->truesize); 8551da177e4SLinus Torvalds kfree_skb(skb); 8561da177e4SLinus Torvalds } 8571da177e4SLinus Torvalds 8581da177e4SLinus Torvalds printk("mpoa: (%s) going down\n", 8591da177e4SLinus Torvalds (mpc->dev) ? mpc->dev->name : "<unknown>"); 8601da177e4SLinus Torvalds module_put(THIS_MODULE); 8611da177e4SLinus Torvalds 8621da177e4SLinus Torvalds return; 8631da177e4SLinus Torvalds } 8641da177e4SLinus Torvalds 8651da177e4SLinus Torvalds /* 8661da177e4SLinus Torvalds * 8671da177e4SLinus Torvalds */ 8681da177e4SLinus Torvalds static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb) 8691da177e4SLinus Torvalds { 8701da177e4SLinus Torvalds 8711da177e4SLinus Torvalds struct mpoa_client *mpc = find_mpc_by_vcc(vcc); 8721da177e4SLinus Torvalds struct k_message *mesg = (struct k_message*)skb->data; 8731da177e4SLinus Torvalds atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); 8741da177e4SLinus Torvalds 8751da177e4SLinus Torvalds if (mpc == NULL) { 8761da177e4SLinus Torvalds printk("mpoa: msg_from_mpoad: no mpc found\n"); 8771da177e4SLinus Torvalds return 0; 8781da177e4SLinus Torvalds } 8791da177e4SLinus Torvalds dprintk("mpoa: (%s) msg_from_mpoad:", (mpc->dev) ? mpc->dev->name : "<unknown>"); 8801da177e4SLinus Torvalds switch(mesg->type) { 8811da177e4SLinus Torvalds case MPOA_RES_REPLY_RCVD: 8821da177e4SLinus Torvalds dprintk(" mpoa_res_reply_rcvd\n"); 8831da177e4SLinus Torvalds MPOA_res_reply_rcvd(mesg, mpc); 8841da177e4SLinus Torvalds break; 8851da177e4SLinus Torvalds case MPOA_TRIGGER_RCVD: 8861da177e4SLinus Torvalds dprintk(" mpoa_trigger_rcvd\n"); 8871da177e4SLinus Torvalds MPOA_trigger_rcvd(mesg, mpc); 8881da177e4SLinus Torvalds break; 8891da177e4SLinus Torvalds case INGRESS_PURGE_RCVD: 8901da177e4SLinus Torvalds dprintk(" nhrp_purge_rcvd\n"); 8911da177e4SLinus Torvalds ingress_purge_rcvd(mesg, mpc); 8921da177e4SLinus Torvalds break; 8931da177e4SLinus Torvalds case EGRESS_PURGE_RCVD: 8941da177e4SLinus Torvalds dprintk(" egress_purge_reply_rcvd\n"); 8951da177e4SLinus Torvalds egress_purge_rcvd(mesg, mpc); 8961da177e4SLinus Torvalds break; 8971da177e4SLinus Torvalds case MPS_DEATH: 8981da177e4SLinus Torvalds dprintk(" mps_death\n"); 8991da177e4SLinus Torvalds mps_death(mesg, mpc); 9001da177e4SLinus Torvalds break; 9011da177e4SLinus Torvalds case CACHE_IMPOS_RCVD: 9021da177e4SLinus Torvalds dprintk(" cache_impos_rcvd\n"); 9031da177e4SLinus Torvalds MPOA_cache_impos_rcvd(mesg, mpc); 9041da177e4SLinus Torvalds break; 9051da177e4SLinus Torvalds case SET_MPC_CTRL_ADDR: 9061da177e4SLinus Torvalds dprintk(" set_mpc_ctrl_addr\n"); 9071da177e4SLinus Torvalds set_mpc_ctrl_addr_rcvd(mesg, mpc); 9081da177e4SLinus Torvalds break; 9091da177e4SLinus Torvalds case SET_MPS_MAC_ADDR: 9101da177e4SLinus Torvalds dprintk(" set_mps_mac_addr\n"); 9111da177e4SLinus Torvalds set_mps_mac_addr_rcvd(mesg, mpc); 9121da177e4SLinus Torvalds break; 9131da177e4SLinus Torvalds case CLEAN_UP_AND_EXIT: 9141da177e4SLinus Torvalds dprintk(" clean_up_and_exit\n"); 9151da177e4SLinus Torvalds clean_up(mesg, mpc, DIE); 9161da177e4SLinus Torvalds break; 9171da177e4SLinus Torvalds case RELOAD: 9181da177e4SLinus Torvalds dprintk(" reload\n"); 9191da177e4SLinus Torvalds clean_up(mesg, mpc, RELOAD); 9201da177e4SLinus Torvalds break; 9211da177e4SLinus Torvalds case SET_MPC_PARAMS: 9221da177e4SLinus Torvalds dprintk(" set_mpc_params\n"); 9231da177e4SLinus Torvalds mpc->parameters = mesg->content.params; 9241da177e4SLinus Torvalds break; 9251da177e4SLinus Torvalds default: 9261da177e4SLinus Torvalds dprintk(" unknown message %d\n", mesg->type); 9271da177e4SLinus Torvalds break; 9281da177e4SLinus Torvalds } 9291da177e4SLinus Torvalds kfree_skb(skb); 9301da177e4SLinus Torvalds 9311da177e4SLinus Torvalds return 0; 9321da177e4SLinus Torvalds } 9331da177e4SLinus Torvalds 9341da177e4SLinus Torvalds /* Remember that this function may not do things that sleep */ 9351da177e4SLinus Torvalds int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc) 9361da177e4SLinus Torvalds { 9371da177e4SLinus Torvalds struct sk_buff *skb; 9381da177e4SLinus Torvalds struct sock *sk; 9391da177e4SLinus Torvalds 9401da177e4SLinus Torvalds if (mpc == NULL || !mpc->mpoad_vcc) { 9411da177e4SLinus Torvalds printk("mpoa: msg_to_mpoad: mesg %d to a non-existent mpoad\n", mesg->type); 9421da177e4SLinus Torvalds return -ENXIO; 9431da177e4SLinus Torvalds } 9441da177e4SLinus Torvalds 9451da177e4SLinus Torvalds skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC); 9461da177e4SLinus Torvalds if (skb == NULL) 9471da177e4SLinus Torvalds return -ENOMEM; 9481da177e4SLinus Torvalds skb_put(skb, sizeof(struct k_message)); 94927d7ff46SArnaldo Carvalho de Melo skb_copy_to_linear_data(skb, mesg, sizeof(*mesg)); 9501da177e4SLinus Torvalds atm_force_charge(mpc->mpoad_vcc, skb->truesize); 9511da177e4SLinus Torvalds 9521da177e4SLinus Torvalds sk = sk_atm(mpc->mpoad_vcc); 9531da177e4SLinus Torvalds skb_queue_tail(&sk->sk_receive_queue, skb); 9541da177e4SLinus Torvalds sk->sk_data_ready(sk, skb->len); 9551da177e4SLinus Torvalds 9561da177e4SLinus Torvalds return 0; 9571da177e4SLinus Torvalds } 9581da177e4SLinus Torvalds 9591da177e4SLinus Torvalds static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev_ptr) 9601da177e4SLinus Torvalds { 9611da177e4SLinus Torvalds struct net_device *dev; 9621da177e4SLinus Torvalds struct mpoa_client *mpc; 9631da177e4SLinus Torvalds struct lec_priv *priv; 9641da177e4SLinus Torvalds 9651da177e4SLinus Torvalds dev = (struct net_device *)dev_ptr; 966e9dc8653SEric W. Biederman 967721499e8SYOSHIFUJI Hideaki if (!net_eq(dev_net(dev), &init_net)) 968e9dc8653SEric W. Biederman return NOTIFY_DONE; 969e9dc8653SEric W. Biederman 9701da177e4SLinus Torvalds if (dev->name == NULL || strncmp(dev->name, "lec", 3)) 9711da177e4SLinus Torvalds return NOTIFY_DONE; /* we are only interested in lec:s */ 9721da177e4SLinus Torvalds 9731da177e4SLinus Torvalds switch (event) { 9741da177e4SLinus Torvalds case NETDEV_REGISTER: /* a new lec device was allocated */ 9751da177e4SLinus Torvalds priv = (struct lec_priv *)dev->priv; 9761da177e4SLinus Torvalds if (priv->lane_version < 2) 9771da177e4SLinus Torvalds break; 9781da177e4SLinus Torvalds priv->lane2_ops->associate_indicator = lane2_assoc_ind; 9791da177e4SLinus Torvalds mpc = find_mpc_by_itfnum(priv->itfnum); 9801da177e4SLinus Torvalds if (mpc == NULL) { 9811da177e4SLinus Torvalds dprintk("mpoa: mpoa_event_listener: allocating new mpc for %s\n", 9821da177e4SLinus Torvalds dev->name); 9831da177e4SLinus Torvalds mpc = alloc_mpc(); 9841da177e4SLinus Torvalds if (mpc == NULL) { 9851da177e4SLinus Torvalds printk("mpoa: mpoa_event_listener: no new mpc"); 9861da177e4SLinus Torvalds break; 9871da177e4SLinus Torvalds } 9881da177e4SLinus Torvalds } 9891da177e4SLinus Torvalds mpc->dev_num = priv->itfnum; 9901da177e4SLinus Torvalds mpc->dev = dev; 9911da177e4SLinus Torvalds dev_hold(dev); 9921da177e4SLinus Torvalds dprintk("mpoa: (%s) was initialized\n", dev->name); 9931da177e4SLinus Torvalds break; 9941da177e4SLinus Torvalds case NETDEV_UNREGISTER: 9951da177e4SLinus Torvalds /* the lec device was deallocated */ 9961da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); 9971da177e4SLinus Torvalds if (mpc == NULL) 9981da177e4SLinus Torvalds break; 9991da177e4SLinus Torvalds dprintk("mpoa: device (%s) was deallocated\n", dev->name); 10001da177e4SLinus Torvalds stop_mpc(mpc); 10011da177e4SLinus Torvalds dev_put(mpc->dev); 10021da177e4SLinus Torvalds mpc->dev = NULL; 10031da177e4SLinus Torvalds break; 10041da177e4SLinus Torvalds case NETDEV_UP: 10051da177e4SLinus Torvalds /* the dev was ifconfig'ed up */ 10061da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); 10071da177e4SLinus Torvalds if (mpc == NULL) 10081da177e4SLinus Torvalds break; 10091da177e4SLinus Torvalds if (mpc->mpoad_vcc != NULL) { 10101da177e4SLinus Torvalds start_mpc(mpc, dev); 10111da177e4SLinus Torvalds } 10121da177e4SLinus Torvalds break; 10131da177e4SLinus Torvalds case NETDEV_DOWN: 10141da177e4SLinus Torvalds /* the dev was ifconfig'ed down */ 10151da177e4SLinus Torvalds /* this means that the flow of packets from the 10161da177e4SLinus Torvalds * upper layer stops 10171da177e4SLinus Torvalds */ 10181da177e4SLinus Torvalds mpc = find_mpc_by_lec(dev); 10191da177e4SLinus Torvalds if (mpc == NULL) 10201da177e4SLinus Torvalds break; 10211da177e4SLinus Torvalds if (mpc->mpoad_vcc != NULL) { 10221da177e4SLinus Torvalds stop_mpc(mpc); 10231da177e4SLinus Torvalds } 10241da177e4SLinus Torvalds break; 10251da177e4SLinus Torvalds case NETDEV_REBOOT: 10261da177e4SLinus Torvalds case NETDEV_CHANGE: 10271da177e4SLinus Torvalds case NETDEV_CHANGEMTU: 10281da177e4SLinus Torvalds case NETDEV_CHANGEADDR: 10291da177e4SLinus Torvalds case NETDEV_GOING_DOWN: 10301da177e4SLinus Torvalds break; 10311da177e4SLinus Torvalds default: 10321da177e4SLinus Torvalds break; 10331da177e4SLinus Torvalds } 10341da177e4SLinus Torvalds 10351da177e4SLinus Torvalds return NOTIFY_DONE; 10361da177e4SLinus Torvalds } 10371da177e4SLinus Torvalds 10381da177e4SLinus Torvalds /* 10391da177e4SLinus Torvalds * Functions which are called after a message is received from mpcd. 10401da177e4SLinus Torvalds * Msg is reused on purpose. 10411da177e4SLinus Torvalds */ 10421da177e4SLinus Torvalds 10431da177e4SLinus Torvalds 10441da177e4SLinus Torvalds static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc) 10451da177e4SLinus Torvalds { 104630d492daSAl Viro __be32 dst_ip = msg->content.in_info.in_dst_ip; 10471da177e4SLinus Torvalds in_cache_entry *entry; 10481da177e4SLinus Torvalds 10491da177e4SLinus Torvalds entry = mpc->in_ops->get(dst_ip, mpc); 10501da177e4SLinus Torvalds if(entry == NULL){ 10511da177e4SLinus Torvalds entry = mpc->in_ops->add_entry(dst_ip, mpc); 10521da177e4SLinus Torvalds entry->entry_state = INGRESS_RESOLVING; 10531da177e4SLinus Torvalds msg->type = SND_MPOA_RES_RQST; 10541da177e4SLinus Torvalds msg->content.in_info = entry->ctrl_info; 10551da177e4SLinus Torvalds msg_to_mpoad(msg, mpc); 10561da177e4SLinus Torvalds do_gettimeofday(&(entry->reply_wait)); 10571da177e4SLinus Torvalds mpc->in_ops->put(entry); 10581da177e4SLinus Torvalds return; 10591da177e4SLinus Torvalds } 10601da177e4SLinus Torvalds 10611da177e4SLinus Torvalds if(entry->entry_state == INGRESS_INVALID){ 10621da177e4SLinus Torvalds entry->entry_state = INGRESS_RESOLVING; 10631da177e4SLinus Torvalds msg->type = SND_MPOA_RES_RQST; 10641da177e4SLinus Torvalds msg->content.in_info = entry->ctrl_info; 10651da177e4SLinus Torvalds msg_to_mpoad(msg, mpc); 10661da177e4SLinus Torvalds do_gettimeofday(&(entry->reply_wait)); 10671da177e4SLinus Torvalds mpc->in_ops->put(entry); 10681da177e4SLinus Torvalds return; 10691da177e4SLinus Torvalds } 10701da177e4SLinus Torvalds 10711da177e4SLinus Torvalds printk("mpoa: (%s) MPOA_trigger_rcvd: entry already in resolving state\n", 10721da177e4SLinus Torvalds (mpc->dev) ? mpc->dev->name : "<unknown>"); 10731da177e4SLinus Torvalds mpc->in_ops->put(entry); 10741da177e4SLinus Torvalds return; 10751da177e4SLinus Torvalds } 10761da177e4SLinus Torvalds 10771da177e4SLinus Torvalds /* 10781da177e4SLinus Torvalds * Things get complicated because we have to check if there's an egress 10791da177e4SLinus Torvalds * shortcut with suitable traffic parameters we could use. 10801da177e4SLinus Torvalds */ 10811da177e4SLinus Torvalds static void check_qos_and_open_shortcut(struct k_message *msg, struct mpoa_client *client, in_cache_entry *entry) 10821da177e4SLinus Torvalds { 108330d492daSAl Viro __be32 dst_ip = msg->content.in_info.in_dst_ip; 10841da177e4SLinus Torvalds struct atm_mpoa_qos *qos = atm_mpoa_search_qos(dst_ip); 10851da177e4SLinus Torvalds eg_cache_entry *eg_entry = client->eg_ops->get_by_src_ip(dst_ip, client); 10861da177e4SLinus Torvalds 10871da177e4SLinus Torvalds if(eg_entry && eg_entry->shortcut){ 10881da177e4SLinus Torvalds if(eg_entry->shortcut->qos.txtp.traffic_class & 10891da177e4SLinus Torvalds msg->qos.txtp.traffic_class & 10901da177e4SLinus Torvalds (qos ? qos->qos.txtp.traffic_class : ATM_UBR | ATM_CBR)){ 10911da177e4SLinus Torvalds if(eg_entry->shortcut->qos.txtp.traffic_class == ATM_UBR) 10921da177e4SLinus Torvalds entry->shortcut = eg_entry->shortcut; 10931da177e4SLinus Torvalds else if(eg_entry->shortcut->qos.txtp.max_pcr > 0) 10941da177e4SLinus Torvalds entry->shortcut = eg_entry->shortcut; 10951da177e4SLinus Torvalds } 10961da177e4SLinus Torvalds if(entry->shortcut){ 1097ff7512e1SAl Viro dprintk("mpoa: (%s) using egress SVC to reach %u.%u.%u.%u\n",client->dev->name, NIPQUAD(dst_ip)); 10981da177e4SLinus Torvalds client->eg_ops->put(eg_entry); 10991da177e4SLinus Torvalds return; 11001da177e4SLinus Torvalds } 11011da177e4SLinus Torvalds } 11021da177e4SLinus Torvalds if (eg_entry != NULL) 11031da177e4SLinus Torvalds client->eg_ops->put(eg_entry); 11041da177e4SLinus Torvalds 11051da177e4SLinus Torvalds /* No luck in the egress cache we must open an ingress SVC */ 11061da177e4SLinus Torvalds msg->type = OPEN_INGRESS_SVC; 11071da177e4SLinus Torvalds if (qos && (qos->qos.txtp.traffic_class == msg->qos.txtp.traffic_class)) 11081da177e4SLinus Torvalds { 11091da177e4SLinus Torvalds msg->qos = qos->qos; 11101da177e4SLinus Torvalds printk("mpoa: (%s) trying to get a CBR shortcut\n",client->dev->name); 11111da177e4SLinus Torvalds } 11121da177e4SLinus Torvalds else memset(&msg->qos,0,sizeof(struct atm_qos)); 11131da177e4SLinus Torvalds msg_to_mpoad(msg, client); 11141da177e4SLinus Torvalds return; 11151da177e4SLinus Torvalds } 11161da177e4SLinus Torvalds 11171da177e4SLinus Torvalds static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc) 11181da177e4SLinus Torvalds { 111930d492daSAl Viro __be32 dst_ip = msg->content.in_info.in_dst_ip; 11201da177e4SLinus Torvalds in_cache_entry *entry = mpc->in_ops->get(dst_ip, mpc); 11211e4fd51eSAndrew Morton 1122ff7512e1SAl Viro dprintk("mpoa: (%s) MPOA_res_reply_rcvd: ip %u.%u.%u.%u\n", mpc->dev->name, NIPQUAD(dst_ip)); 11231da177e4SLinus Torvalds ddprintk("mpoa: (%s) MPOA_res_reply_rcvd() entry = %p", mpc->dev->name, entry); 11241da177e4SLinus Torvalds if(entry == NULL){ 11251da177e4SLinus Torvalds printk("\nmpoa: (%s) ARGH, received res. reply for an entry that doesn't exist.\n", mpc->dev->name); 11261da177e4SLinus Torvalds return; 11271da177e4SLinus Torvalds } 11281da177e4SLinus Torvalds ddprintk(" entry_state = %d ", entry->entry_state); 11291da177e4SLinus Torvalds 11301da177e4SLinus Torvalds if (entry->entry_state == INGRESS_RESOLVED) { 11311da177e4SLinus Torvalds printk("\nmpoa: (%s) MPOA_res_reply_rcvd for RESOLVED entry!\n", mpc->dev->name); 11321da177e4SLinus Torvalds mpc->in_ops->put(entry); 11331da177e4SLinus Torvalds return; 11341da177e4SLinus Torvalds } 11351da177e4SLinus Torvalds 11361da177e4SLinus Torvalds entry->ctrl_info = msg->content.in_info; 11371da177e4SLinus Torvalds do_gettimeofday(&(entry->tv)); 11381da177e4SLinus Torvalds do_gettimeofday(&(entry->reply_wait)); /* Used in refreshing func from now on */ 11391da177e4SLinus Torvalds entry->refresh_time = 0; 11401da177e4SLinus Torvalds ddprintk("entry->shortcut = %p\n", entry->shortcut); 11411da177e4SLinus Torvalds 11421da177e4SLinus Torvalds if(entry->entry_state == INGRESS_RESOLVING && entry->shortcut != NULL){ 11431da177e4SLinus Torvalds entry->entry_state = INGRESS_RESOLVED; 11441da177e4SLinus Torvalds mpc->in_ops->put(entry); 11451da177e4SLinus Torvalds return; /* Shortcut already open... */ 11461da177e4SLinus Torvalds } 11471da177e4SLinus Torvalds 11481da177e4SLinus Torvalds if (entry->shortcut != NULL) { 11491da177e4SLinus Torvalds printk("mpoa: (%s) MPOA_res_reply_rcvd: entry->shortcut != NULL, impossible!\n", 11501da177e4SLinus Torvalds mpc->dev->name); 11511da177e4SLinus Torvalds mpc->in_ops->put(entry); 11521da177e4SLinus Torvalds return; 11531da177e4SLinus Torvalds } 11541da177e4SLinus Torvalds 11551da177e4SLinus Torvalds check_qos_and_open_shortcut(msg, mpc, entry); 11561da177e4SLinus Torvalds entry->entry_state = INGRESS_RESOLVED; 11571da177e4SLinus Torvalds mpc->in_ops->put(entry); 11581da177e4SLinus Torvalds 11591da177e4SLinus Torvalds return; 11601da177e4SLinus Torvalds 11611da177e4SLinus Torvalds } 11621da177e4SLinus Torvalds 11631da177e4SLinus Torvalds static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) 11641da177e4SLinus Torvalds { 116530d492daSAl Viro __be32 dst_ip = msg->content.in_info.in_dst_ip; 116630d492daSAl Viro __be32 mask = msg->ip_mask; 11671da177e4SLinus Torvalds in_cache_entry *entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask); 11681da177e4SLinus Torvalds 11691da177e4SLinus Torvalds if(entry == NULL){ 11701da177e4SLinus Torvalds printk("mpoa: (%s) ingress_purge_rcvd: purge for a non-existing entry, ", mpc->dev->name); 1171b4229934SAl Viro printk("ip = %u.%u.%u.%u\n", NIPQUAD(dst_ip)); 11721da177e4SLinus Torvalds return; 11731da177e4SLinus Torvalds } 11741da177e4SLinus Torvalds 11751da177e4SLinus Torvalds do { 11761da177e4SLinus Torvalds dprintk("mpoa: (%s) ingress_purge_rcvd: removing an ingress entry, ip = %u.%u.%u.%u\n" , 1177b4229934SAl Viro mpc->dev->name, NIPQUAD(dst_ip)); 11781da177e4SLinus Torvalds write_lock_bh(&mpc->ingress_lock); 11791da177e4SLinus Torvalds mpc->in_ops->remove_entry(entry, mpc); 11801da177e4SLinus Torvalds write_unlock_bh(&mpc->ingress_lock); 11811da177e4SLinus Torvalds mpc->in_ops->put(entry); 11821da177e4SLinus Torvalds entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask); 11831da177e4SLinus Torvalds } while (entry != NULL); 11841da177e4SLinus Torvalds 11851da177e4SLinus Torvalds return; 11861da177e4SLinus Torvalds } 11871da177e4SLinus Torvalds 11881da177e4SLinus Torvalds static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc) 11891da177e4SLinus Torvalds { 119030d492daSAl Viro __be32 cache_id = msg->content.eg_info.cache_id; 11911da177e4SLinus Torvalds eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(cache_id, mpc); 11921da177e4SLinus Torvalds 11931da177e4SLinus Torvalds if (entry == NULL) { 11941da177e4SLinus Torvalds dprintk("mpoa: (%s) egress_purge_rcvd: purge for a non-existing entry\n", mpc->dev->name); 11951da177e4SLinus Torvalds return; 11961da177e4SLinus Torvalds } 11971da177e4SLinus Torvalds 11981da177e4SLinus Torvalds write_lock_irq(&mpc->egress_lock); 11991da177e4SLinus Torvalds mpc->eg_ops->remove_entry(entry, mpc); 12001da177e4SLinus Torvalds write_unlock_irq(&mpc->egress_lock); 12011da177e4SLinus Torvalds 12021da177e4SLinus Torvalds mpc->eg_ops->put(entry); 12031da177e4SLinus Torvalds 12041da177e4SLinus Torvalds return; 12051da177e4SLinus Torvalds } 12061da177e4SLinus Torvalds 12071da177e4SLinus Torvalds static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry) 12081da177e4SLinus Torvalds { 12091da177e4SLinus Torvalds struct sock *sk; 12101da177e4SLinus Torvalds struct k_message *purge_msg; 12111da177e4SLinus Torvalds struct sk_buff *skb; 12121da177e4SLinus Torvalds 12131da177e4SLinus Torvalds dprintk("mpoa: purge_egress_shortcut: entering\n"); 12141da177e4SLinus Torvalds if (vcc == NULL) { 12151da177e4SLinus Torvalds printk("mpoa: purge_egress_shortcut: vcc == NULL\n"); 12161da177e4SLinus Torvalds return; 12171da177e4SLinus Torvalds } 12181da177e4SLinus Torvalds 12191da177e4SLinus Torvalds skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC); 12201da177e4SLinus Torvalds if (skb == NULL) { 12211da177e4SLinus Torvalds printk("mpoa: purge_egress_shortcut: out of memory\n"); 12221da177e4SLinus Torvalds return; 12231da177e4SLinus Torvalds } 12241da177e4SLinus Torvalds 12251da177e4SLinus Torvalds skb_put(skb, sizeof(struct k_message)); 12261da177e4SLinus Torvalds memset(skb->data, 0, sizeof(struct k_message)); 12271da177e4SLinus Torvalds purge_msg = (struct k_message *)skb->data; 12281da177e4SLinus Torvalds purge_msg->type = DATA_PLANE_PURGE; 12291da177e4SLinus Torvalds if (entry != NULL) 12301da177e4SLinus Torvalds purge_msg->content.eg_info = entry->ctrl_info; 12311da177e4SLinus Torvalds 12321da177e4SLinus Torvalds atm_force_charge(vcc, skb->truesize); 12331da177e4SLinus Torvalds 12341da177e4SLinus Torvalds sk = sk_atm(vcc); 12351da177e4SLinus Torvalds skb_queue_tail(&sk->sk_receive_queue, skb); 12361da177e4SLinus Torvalds sk->sk_data_ready(sk, skb->len); 12371da177e4SLinus Torvalds dprintk("mpoa: purge_egress_shortcut: exiting:\n"); 12381da177e4SLinus Torvalds 12391da177e4SLinus Torvalds return; 12401da177e4SLinus Torvalds } 12411da177e4SLinus Torvalds 12421da177e4SLinus Torvalds /* 12431da177e4SLinus Torvalds * Our MPS died. Tell our daemon to send NHRP data plane purge to each 12441da177e4SLinus Torvalds * of the egress shortcuts we have. 12451da177e4SLinus Torvalds */ 12461da177e4SLinus Torvalds static void mps_death( struct k_message * msg, struct mpoa_client * mpc ) 12471da177e4SLinus Torvalds { 12481da177e4SLinus Torvalds eg_cache_entry *entry; 12491da177e4SLinus Torvalds 12501da177e4SLinus Torvalds dprintk("mpoa: (%s) mps_death:\n", mpc->dev->name); 12511da177e4SLinus Torvalds 12521da177e4SLinus Torvalds if(memcmp(msg->MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN)){ 12531da177e4SLinus Torvalds printk("mpoa: (%s) mps_death: wrong MPS\n", mpc->dev->name); 12541da177e4SLinus Torvalds return; 12551da177e4SLinus Torvalds } 12561da177e4SLinus Torvalds 12571da177e4SLinus Torvalds /* FIXME: This knows too much of the cache structure */ 12581da177e4SLinus Torvalds read_lock_irq(&mpc->egress_lock); 12591da177e4SLinus Torvalds entry = mpc->eg_cache; 12601da177e4SLinus Torvalds while (entry != NULL) { 12611da177e4SLinus Torvalds purge_egress_shortcut(entry->shortcut, entry); 12621da177e4SLinus Torvalds entry = entry->next; 12631da177e4SLinus Torvalds } 12641da177e4SLinus Torvalds read_unlock_irq(&mpc->egress_lock); 12651da177e4SLinus Torvalds 12661da177e4SLinus Torvalds mpc->in_ops->destroy_cache(mpc); 12671da177e4SLinus Torvalds mpc->eg_ops->destroy_cache(mpc); 12681da177e4SLinus Torvalds 12691da177e4SLinus Torvalds return; 12701da177e4SLinus Torvalds } 12711da177e4SLinus Torvalds 12721da177e4SLinus Torvalds static void MPOA_cache_impos_rcvd( struct k_message * msg, struct mpoa_client * mpc) 12731da177e4SLinus Torvalds { 12741da177e4SLinus Torvalds uint16_t holding_time; 12751da177e4SLinus Torvalds eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(msg->content.eg_info.cache_id, mpc); 12761da177e4SLinus Torvalds 12771da177e4SLinus Torvalds holding_time = msg->content.eg_info.holding_time; 12781da177e4SLinus Torvalds dprintk("mpoa: (%s) MPOA_cache_impos_rcvd: entry = %p, holding_time = %u\n", 12791da177e4SLinus Torvalds mpc->dev->name, entry, holding_time); 12801da177e4SLinus Torvalds if(entry == NULL && holding_time) { 12811da177e4SLinus Torvalds entry = mpc->eg_ops->add_entry(msg, mpc); 12821da177e4SLinus Torvalds mpc->eg_ops->put(entry); 12831da177e4SLinus Torvalds return; 12841da177e4SLinus Torvalds } 12851da177e4SLinus Torvalds if(holding_time){ 12861da177e4SLinus Torvalds mpc->eg_ops->update(entry, holding_time); 12871da177e4SLinus Torvalds return; 12881da177e4SLinus Torvalds } 12891da177e4SLinus Torvalds 12901da177e4SLinus Torvalds write_lock_irq(&mpc->egress_lock); 12911da177e4SLinus Torvalds mpc->eg_ops->remove_entry(entry, mpc); 12921da177e4SLinus Torvalds write_unlock_irq(&mpc->egress_lock); 12931da177e4SLinus Torvalds 12941da177e4SLinus Torvalds mpc->eg_ops->put(entry); 12951da177e4SLinus Torvalds 12961da177e4SLinus Torvalds return; 12971da177e4SLinus Torvalds } 12981da177e4SLinus Torvalds 12991da177e4SLinus Torvalds static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc) 13001da177e4SLinus Torvalds { 13011da177e4SLinus Torvalds struct lec_priv *priv; 13021da177e4SLinus Torvalds int i, retval ; 13031da177e4SLinus Torvalds 13041da177e4SLinus Torvalds uint8_t tlv[4 + 1 + 1 + 1 + ATM_ESA_LEN]; 13051da177e4SLinus Torvalds 13061da177e4SLinus Torvalds tlv[0] = 00; tlv[1] = 0xa0; tlv[2] = 0x3e; tlv[3] = 0x2a; /* type */ 13071da177e4SLinus Torvalds tlv[4] = 1 + 1 + ATM_ESA_LEN; /* length */ 13081da177e4SLinus Torvalds tlv[5] = 0x02; /* MPOA client */ 13091da177e4SLinus Torvalds tlv[6] = 0x00; /* number of MPS MAC addresses */ 13101da177e4SLinus Torvalds 13111da177e4SLinus Torvalds memcpy(&tlv[7], mesg->MPS_ctrl, ATM_ESA_LEN); /* MPC ctrl ATM addr */ 13121da177e4SLinus Torvalds memcpy(mpc->our_ctrl_addr, mesg->MPS_ctrl, ATM_ESA_LEN); 13131da177e4SLinus Torvalds 13141da177e4SLinus Torvalds dprintk("mpoa: (%s) setting MPC ctrl ATM address to ", 13151da177e4SLinus Torvalds (mpc->dev) ? mpc->dev->name : "<unknown>"); 13161da177e4SLinus Torvalds for (i = 7; i < sizeof(tlv); i++) 13171da177e4SLinus Torvalds dprintk("%02x ", tlv[i]); 13181da177e4SLinus Torvalds dprintk("\n"); 13191da177e4SLinus Torvalds 13201da177e4SLinus Torvalds if (mpc->dev) { 13211da177e4SLinus Torvalds priv = (struct lec_priv *)mpc->dev->priv; 13221da177e4SLinus Torvalds retval = priv->lane2_ops->associate_req(mpc->dev, mpc->dev->dev_addr, tlv, sizeof(tlv)); 13231da177e4SLinus Torvalds if (retval == 0) 13241da177e4SLinus Torvalds printk("mpoa: (%s) MPOA device type TLV association failed\n", mpc->dev->name); 13251da177e4SLinus Torvalds retval = priv->lane2_ops->resolve(mpc->dev, NULL, 1, NULL, NULL); 13261da177e4SLinus Torvalds if (retval < 0) 13271da177e4SLinus Torvalds printk("mpoa: (%s) targetless LE_ARP request failed\n", mpc->dev->name); 13281da177e4SLinus Torvalds } 13291da177e4SLinus Torvalds 13301da177e4SLinus Torvalds return; 13311da177e4SLinus Torvalds } 13321da177e4SLinus Torvalds 13331da177e4SLinus Torvalds static void set_mps_mac_addr_rcvd(struct k_message *msg, struct mpoa_client *client) 13341da177e4SLinus Torvalds { 13351da177e4SLinus Torvalds 13361da177e4SLinus Torvalds if(client->number_of_mps_macs) 13371da177e4SLinus Torvalds kfree(client->mps_macs); 13381da177e4SLinus Torvalds client->number_of_mps_macs = 0; 13392afe37cdSArnaldo Carvalho de Melo client->mps_macs = kmemdup(msg->MPS_ctrl, ETH_ALEN, GFP_KERNEL); 13401da177e4SLinus Torvalds if (client->mps_macs == NULL) { 13411da177e4SLinus Torvalds printk("mpoa: set_mps_mac_addr_rcvd: out of memory\n"); 13421da177e4SLinus Torvalds return; 13431da177e4SLinus Torvalds } 13441da177e4SLinus Torvalds client->number_of_mps_macs = 1; 13451da177e4SLinus Torvalds 13461da177e4SLinus Torvalds return; 13471da177e4SLinus Torvalds } 13481da177e4SLinus Torvalds 13491da177e4SLinus Torvalds /* 13501da177e4SLinus Torvalds * purge egress cache and tell daemon to 'action' (DIE, RELOAD) 13511da177e4SLinus Torvalds */ 13521da177e4SLinus Torvalds static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action) 13531da177e4SLinus Torvalds { 13541da177e4SLinus Torvalds 13551da177e4SLinus Torvalds eg_cache_entry *entry; 13561da177e4SLinus Torvalds msg->type = SND_EGRESS_PURGE; 13571da177e4SLinus Torvalds 13581da177e4SLinus Torvalds 13591da177e4SLinus Torvalds /* FIXME: This knows too much of the cache structure */ 13601da177e4SLinus Torvalds read_lock_irq(&mpc->egress_lock); 13611da177e4SLinus Torvalds entry = mpc->eg_cache; 13621da177e4SLinus Torvalds while (entry != NULL){ 13631da177e4SLinus Torvalds msg->content.eg_info = entry->ctrl_info; 13641da177e4SLinus Torvalds dprintk("mpoa: cache_id %u\n", entry->ctrl_info.cache_id); 13651da177e4SLinus Torvalds msg_to_mpoad(msg, mpc); 13661da177e4SLinus Torvalds entry = entry->next; 13671da177e4SLinus Torvalds } 13681da177e4SLinus Torvalds read_unlock_irq(&mpc->egress_lock); 13691da177e4SLinus Torvalds 13701da177e4SLinus Torvalds msg->type = action; 13711da177e4SLinus Torvalds msg_to_mpoad(msg, mpc); 13721da177e4SLinus Torvalds return; 13731da177e4SLinus Torvalds } 13741da177e4SLinus Torvalds 13751da177e4SLinus Torvalds static void mpc_timer_refresh(void) 13761da177e4SLinus Torvalds { 13771da177e4SLinus Torvalds mpc_timer.expires = jiffies + (MPC_P2 * HZ); 13781da177e4SLinus Torvalds mpc_timer.data = mpc_timer.expires; 13791da177e4SLinus Torvalds mpc_timer.function = mpc_cache_check; 13801da177e4SLinus Torvalds add_timer(&mpc_timer); 13811da177e4SLinus Torvalds 13821da177e4SLinus Torvalds return; 13831da177e4SLinus Torvalds } 13841da177e4SLinus Torvalds 13851da177e4SLinus Torvalds static void mpc_cache_check( unsigned long checking_time ) 13861da177e4SLinus Torvalds { 13871da177e4SLinus Torvalds struct mpoa_client *mpc = mpcs; 13881da177e4SLinus Torvalds static unsigned long previous_resolving_check_time; 13891da177e4SLinus Torvalds static unsigned long previous_refresh_time; 13901da177e4SLinus Torvalds 13911da177e4SLinus Torvalds while( mpc != NULL ){ 13921da177e4SLinus Torvalds mpc->in_ops->clear_count(mpc); 13931da177e4SLinus Torvalds mpc->eg_ops->clear_expired(mpc); 13941da177e4SLinus Torvalds if(checking_time - previous_resolving_check_time > mpc->parameters.mpc_p4 * HZ ){ 13951da177e4SLinus Torvalds mpc->in_ops->check_resolving(mpc); 13961da177e4SLinus Torvalds previous_resolving_check_time = checking_time; 13971da177e4SLinus Torvalds } 13981da177e4SLinus Torvalds if(checking_time - previous_refresh_time > mpc->parameters.mpc_p5 * HZ ){ 13991da177e4SLinus Torvalds mpc->in_ops->refresh(mpc); 14001da177e4SLinus Torvalds previous_refresh_time = checking_time; 14011da177e4SLinus Torvalds } 14021da177e4SLinus Torvalds mpc = mpc->next; 14031da177e4SLinus Torvalds } 14041da177e4SLinus Torvalds mpc_timer_refresh(); 14051da177e4SLinus Torvalds 14061da177e4SLinus Torvalds return; 14071da177e4SLinus Torvalds } 14081da177e4SLinus Torvalds 14091da177e4SLinus Torvalds static int atm_mpoa_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 14101da177e4SLinus Torvalds { 14111da177e4SLinus Torvalds int err = 0; 14121da177e4SLinus Torvalds struct atm_vcc *vcc = ATM_SD(sock); 14131da177e4SLinus Torvalds 14141da177e4SLinus Torvalds if (cmd != ATMMPC_CTRL && cmd != ATMMPC_DATA) 14151da177e4SLinus Torvalds return -ENOIOCTLCMD; 14161da177e4SLinus Torvalds 14171da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 14181da177e4SLinus Torvalds return -EPERM; 14191da177e4SLinus Torvalds 14201da177e4SLinus Torvalds switch (cmd) { 14211da177e4SLinus Torvalds case ATMMPC_CTRL: 14221da177e4SLinus Torvalds err = atm_mpoa_mpoad_attach(vcc, (int)arg); 14231da177e4SLinus Torvalds if (err >= 0) 14241da177e4SLinus Torvalds sock->state = SS_CONNECTED; 14251da177e4SLinus Torvalds break; 14261da177e4SLinus Torvalds case ATMMPC_DATA: 14271da177e4SLinus Torvalds err = atm_mpoa_vcc_attach(vcc, (void __user *)arg); 14281da177e4SLinus Torvalds break; 14291da177e4SLinus Torvalds default: 14301da177e4SLinus Torvalds break; 14311da177e4SLinus Torvalds } 14321da177e4SLinus Torvalds return err; 14331da177e4SLinus Torvalds } 14341da177e4SLinus Torvalds 14351da177e4SLinus Torvalds 14361da177e4SLinus Torvalds static struct atm_ioctl atm_ioctl_ops = { 14371da177e4SLinus Torvalds .owner = THIS_MODULE, 14381da177e4SLinus Torvalds .ioctl = atm_mpoa_ioctl, 14391da177e4SLinus Torvalds }; 14401da177e4SLinus Torvalds 14411da177e4SLinus Torvalds static __init int atm_mpoa_init(void) 14421da177e4SLinus Torvalds { 14431da177e4SLinus Torvalds register_atm_ioctl(&atm_ioctl_ops); 14441da177e4SLinus Torvalds 14451da177e4SLinus Torvalds if (mpc_proc_init() != 0) 14461da177e4SLinus Torvalds printk(KERN_INFO "mpoa: failed to initialize /proc/mpoa\n"); 14471da177e4SLinus Torvalds 14481da177e4SLinus Torvalds printk("mpc.c: " __DATE__ " " __TIME__ " initialized\n"); 14491da177e4SLinus Torvalds 14501da177e4SLinus Torvalds return 0; 14511da177e4SLinus Torvalds } 14521da177e4SLinus Torvalds 14531da177e4SLinus Torvalds static void __exit atm_mpoa_cleanup(void) 14541da177e4SLinus Torvalds { 14551da177e4SLinus Torvalds struct mpoa_client *mpc, *tmp; 14561da177e4SLinus Torvalds struct atm_mpoa_qos *qos, *nextqos; 14571da177e4SLinus Torvalds struct lec_priv *priv; 14581da177e4SLinus Torvalds 14591da177e4SLinus Torvalds mpc_proc_clean(); 14601da177e4SLinus Torvalds 14611da177e4SLinus Torvalds del_timer(&mpc_timer); 14621da177e4SLinus Torvalds unregister_netdevice_notifier(&mpoa_notifier); 14631da177e4SLinus Torvalds deregister_atm_ioctl(&atm_ioctl_ops); 14641da177e4SLinus Torvalds 14651da177e4SLinus Torvalds mpc = mpcs; 14661da177e4SLinus Torvalds mpcs = NULL; 14671da177e4SLinus Torvalds while (mpc != NULL) { 14681da177e4SLinus Torvalds tmp = mpc->next; 14691da177e4SLinus Torvalds if (mpc->dev != NULL) { 14701da177e4SLinus Torvalds stop_mpc(mpc); 14711da177e4SLinus Torvalds priv = (struct lec_priv *)mpc->dev->priv; 14721da177e4SLinus Torvalds if (priv->lane2_ops != NULL) 14731da177e4SLinus Torvalds priv->lane2_ops->associate_indicator = NULL; 14741da177e4SLinus Torvalds } 14751da177e4SLinus Torvalds ddprintk("mpoa: cleanup_module: about to clear caches\n"); 14761da177e4SLinus Torvalds mpc->in_ops->destroy_cache(mpc); 14771da177e4SLinus Torvalds mpc->eg_ops->destroy_cache(mpc); 14781da177e4SLinus Torvalds ddprintk("mpoa: cleanup_module: caches cleared\n"); 14791da177e4SLinus Torvalds kfree(mpc->mps_macs); 14801da177e4SLinus Torvalds memset(mpc, 0, sizeof(struct mpoa_client)); 14811da177e4SLinus Torvalds ddprintk("mpoa: cleanup_module: about to kfree %p\n", mpc); 14821da177e4SLinus Torvalds kfree(mpc); 14831da177e4SLinus Torvalds ddprintk("mpoa: cleanup_module: next mpc is at %p\n", tmp); 14841da177e4SLinus Torvalds mpc = tmp; 14851da177e4SLinus Torvalds } 14861da177e4SLinus Torvalds 14871da177e4SLinus Torvalds qos = qos_head; 14881da177e4SLinus Torvalds qos_head = NULL; 14891da177e4SLinus Torvalds while (qos != NULL) { 14901da177e4SLinus Torvalds nextqos = qos->next; 14911da177e4SLinus Torvalds dprintk("mpoa: cleanup_module: freeing qos entry %p\n", qos); 14921da177e4SLinus Torvalds kfree(qos); 14931da177e4SLinus Torvalds qos = nextqos; 14941da177e4SLinus Torvalds } 14951da177e4SLinus Torvalds 14961da177e4SLinus Torvalds return; 14971da177e4SLinus Torvalds } 14981da177e4SLinus Torvalds 14991da177e4SLinus Torvalds module_init(atm_mpoa_init); 15001da177e4SLinus Torvalds module_exit(atm_mpoa_cleanup); 15011da177e4SLinus Torvalds 15021da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 1503