#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/timer.h>
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#include <linux/init.h>
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#include <linux/init.h>
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#include <linux/bitops.h>
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#include <linux/bitops.h>
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/* We are an ethernet device */
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/* We are an ethernet device */
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#include <linux/if_ether.h>
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#include <linux/if_ether.h>
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#include <linux/netdevice.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/etherdevice.h>
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#include <net/sock.h>
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#include <net/sock.h>
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#include <linux/skbuff.h>
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#include <linux/skbuff.h>
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#include <linux/ip.h>
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#include <linux/ip.h>
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#include <asm/byteorder.h>
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#include <asm/byteorder.h>
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#include <asm/uaccess.h>
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#include <asm/uaccess.h>
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#include <asm/checksum.h> /* for ip_fast_csum() */
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#include <asm/checksum.h> /* for ip_fast_csum() */
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#include <net/arp.h>
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#include <net/arp.h>
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#include <net/dst.h>
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#include <net/dst.h>
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#include <linux/proc_fs.h>
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#include <linux/proc_fs.h>
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/* And atm device */
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/* And atm device */
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#include <linux/atmdev.h>
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#include <linux/atmdev.h>
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#include <linux/atmlec.h>
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#include <linux/atmlec.h>
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#include <linux/atmmpc.h>
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#include <linux/atmmpc.h>
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/* Modular too */
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/* Modular too */
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#include <linux/config.h>
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/module.h>
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#include "lec.h"
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#include "lec.h"
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#include "mpc.h"
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#include "mpc.h"
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#include "resources.h"
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#include "resources.h"
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/*
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/*
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* mpc.c: Implementation of MPOA client kernel part
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* mpc.c: Implementation of MPOA client kernel part
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*/
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*/
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#if 0
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#if 0
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#define dprintk printk /* debug */
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#define dprintk printk /* debug */
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#else
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#else
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#define dprintk(format,args...)
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#define dprintk(format,args...)
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#endif
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#endif
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#if 0
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#if 0
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#define ddprintk printk /* more debug */
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#define ddprintk printk /* more debug */
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#else
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#else
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#define ddprintk(format,args...)
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#define ddprintk(format,args...)
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#endif
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#endif
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#define MPOA_TAG_LEN 4
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#define MPOA_TAG_LEN 4
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/* mpc_daemon -> kernel */
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/* mpc_daemon -> kernel */
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static void MPOA_trigger_rcvd (struct k_message *msg, struct mpoa_client *mpc);
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static void MPOA_trigger_rcvd (struct k_message *msg, struct mpoa_client *mpc);
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static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc);
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static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc);
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static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc);
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static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc);
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static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc);
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static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc);
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static void mps_death(struct k_message *msg, struct mpoa_client *mpc);
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static void mps_death(struct k_message *msg, struct mpoa_client *mpc);
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static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action);
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static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action);
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static void MPOA_cache_impos_rcvd(struct k_message *msg, struct mpoa_client *mpc);
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static void MPOA_cache_impos_rcvd(struct k_message *msg, struct mpoa_client *mpc);
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static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc);
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static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc);
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static void set_mps_mac_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc);
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static void set_mps_mac_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc);
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static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac,
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static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac,
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uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type);
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uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type);
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static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry);
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static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry);
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static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc);
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static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc);
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static void mpoad_close(struct atm_vcc *vcc);
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static void mpoad_close(struct atm_vcc *vcc);
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static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb);
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static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb);
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static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb);
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static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb);
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static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev);
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static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev);
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static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev);
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static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev);
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static void mpc_timer_refresh(void);
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static void mpc_timer_refresh(void);
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static void mpc_cache_check( unsigned long checking_time );
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static void mpc_cache_check( unsigned long checking_time );
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static struct llc_snap_hdr llc_snap_mpoa_ctrl = {
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static struct llc_snap_hdr llc_snap_mpoa_ctrl = {
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0xaa, 0xaa, 0x03,
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0xaa, 0xaa, 0x03,
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{0x00, 0x00, 0x5e},
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{0x00, 0x00, 0x5e},
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{0x00, 0x03} /* For MPOA control PDUs */
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{0x00, 0x03} /* For MPOA control PDUs */
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};
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};
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static struct llc_snap_hdr llc_snap_mpoa_data = {
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static struct llc_snap_hdr llc_snap_mpoa_data = {
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0xaa, 0xaa, 0x03,
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0xaa, 0xaa, 0x03,
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{0x00, 0x00, 0x00},
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{0x00, 0x00, 0x00},
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{0x08, 0x00} /* This is for IP PDUs only */
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{0x08, 0x00} /* This is for IP PDUs only */
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};
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};
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static struct llc_snap_hdr llc_snap_mpoa_data_tagged = {
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static struct llc_snap_hdr llc_snap_mpoa_data_tagged = {
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0xaa, 0xaa, 0x03,
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0xaa, 0xaa, 0x03,
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{0x00, 0x00, 0x00},
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{0x00, 0x00, 0x00},
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{0x88, 0x4c} /* This is for tagged data PDUs */
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{0x88, 0x4c} /* This is for tagged data PDUs */
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};
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};
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static struct notifier_block mpoa_notifier = {
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static struct notifier_block mpoa_notifier = {
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mpoa_event_listener,
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mpoa_event_listener,
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NULL,
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NULL,
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0
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0
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};
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};
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#ifdef CONFIG_PROC_FS
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#ifdef CONFIG_PROC_FS
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extern int mpc_proc_init(void);
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extern int mpc_proc_init(void);
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extern void mpc_proc_clean(void);
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extern void mpc_proc_clean(void);
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#endif
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#endif
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struct mpoa_client *mpcs = NULL; /* FIXME */
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struct mpoa_client *mpcs = NULL; /* FIXME */
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static struct atm_mpoa_qos *qos_head = NULL;
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static struct atm_mpoa_qos *qos_head = NULL;
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static struct timer_list mpc_timer;
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static struct timer_list mpc_timer;
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static struct mpoa_client *find_mpc_by_itfnum(int itf)
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static struct mpoa_client *find_mpc_by_itfnum(int itf)
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{
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{
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struct mpoa_client *mpc;
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struct mpoa_client *mpc;
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mpc = mpcs; /* our global linked list */
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mpc = mpcs; /* our global linked list */
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while (mpc != NULL) {
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while (mpc != NULL) {
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if (mpc->dev_num == itf)
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if (mpc->dev_num == itf)
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return mpc;
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return mpc;
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mpc = mpc->next;
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mpc = mpc->next;
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}
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}
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return NULL; /* not found */
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return NULL; /* not found */
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}
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}
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static struct mpoa_client *find_mpc_by_vcc(struct atm_vcc *vcc)
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static struct mpoa_client *find_mpc_by_vcc(struct atm_vcc *vcc)
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{
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{
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struct mpoa_client *mpc;
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struct mpoa_client *mpc;
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mpc = mpcs; /* our global linked list */
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mpc = mpcs; /* our global linked list */
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while (mpc != NULL) {
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while (mpc != NULL) {
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if (mpc->mpoad_vcc == vcc)
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if (mpc->mpoad_vcc == vcc)
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return mpc;
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return mpc;
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mpc = mpc->next;
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mpc = mpc->next;
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}
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}
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return NULL; /* not found */
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return NULL; /* not found */
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}
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}
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static struct mpoa_client *find_mpc_by_lec(struct net_device *dev)
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static struct mpoa_client *find_mpc_by_lec(struct net_device *dev)
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{
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{
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struct mpoa_client *mpc;
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struct mpoa_client *mpc;
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mpc = mpcs; /* our global linked list */
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mpc = mpcs; /* our global linked list */
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while (mpc != NULL) {
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while (mpc != NULL) {
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if (mpc->dev == dev)
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if (mpc->dev == dev)
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return mpc;
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return mpc;
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mpc = mpc->next;
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mpc = mpc->next;
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}
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}
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return NULL; /* not found */
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return NULL; /* not found */
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}
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}
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/*
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/*
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* Functions for managing QoS list
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* Functions for managing QoS list
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*/
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*/
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/*
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/*
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* Overwrites the old entry or makes a new one.
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* Overwrites the old entry or makes a new one.
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*/
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*/
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struct atm_mpoa_qos *atm_mpoa_add_qos(uint32_t dst_ip, struct atm_qos *qos)
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struct atm_mpoa_qos *atm_mpoa_add_qos(uint32_t dst_ip, struct atm_qos *qos)
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{
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{
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struct atm_mpoa_qos *entry;
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struct atm_mpoa_qos *entry;
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entry = atm_mpoa_search_qos(dst_ip);
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entry = atm_mpoa_search_qos(dst_ip);
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if (entry != NULL) {
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if (entry != NULL) {
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entry->qos = *qos;
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entry->qos = *qos;
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return entry;
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return entry;
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}
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}
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entry = kmalloc(sizeof(struct atm_mpoa_qos), GFP_KERNEL);
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entry = kmalloc(sizeof(struct atm_mpoa_qos), GFP_KERNEL);
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if (entry == NULL) {
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if (entry == NULL) {
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printk("mpoa: atm_mpoa_add_qos: out of memory\n");
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printk("mpoa: atm_mpoa_add_qos: out of memory\n");
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return entry;
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return entry;
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}
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}
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entry->ipaddr = dst_ip;
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entry->ipaddr = dst_ip;
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entry->qos = *qos;
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entry->qos = *qos;
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entry->next = qos_head;
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entry->next = qos_head;
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qos_head = entry;
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qos_head = entry;
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return entry;
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return entry;
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}
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}
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struct atm_mpoa_qos *atm_mpoa_search_qos(uint32_t dst_ip)
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struct atm_mpoa_qos *atm_mpoa_search_qos(uint32_t dst_ip)
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{
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{
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struct atm_mpoa_qos *qos;
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struct atm_mpoa_qos *qos;
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qos = qos_head;
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qos = qos_head;
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while( qos != NULL ){
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while( qos != NULL ){
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if(qos->ipaddr == dst_ip) {
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if(qos->ipaddr == dst_ip) {
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break;
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break;
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}
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}
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qos = qos->next;
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qos = qos->next;
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}
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}
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return qos;
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return qos;
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}
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}
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/*
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/*
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* Returns 0 for failure
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* Returns 0 for failure
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*/
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*/
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int atm_mpoa_delete_qos(struct atm_mpoa_qos *entry)
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int atm_mpoa_delete_qos(struct atm_mpoa_qos *entry)
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{
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{
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struct atm_mpoa_qos *curr;
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struct atm_mpoa_qos *curr;
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if (entry == NULL) return 0;
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if (entry == NULL) return 0;
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if (entry == qos_head) {
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if (entry == qos_head) {
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qos_head = qos_head->next;
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qos_head = qos_head->next;
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kfree(entry);
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kfree(entry);
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return 1;
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return 1;
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}
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}
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curr = qos_head;
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curr = qos_head;
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while (curr != NULL) {
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while (curr != NULL) {
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if (curr->next == entry) {
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if (curr->next == entry) {
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curr->next = entry->next;
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curr->next = entry->next;
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kfree(entry);
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kfree(entry);
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return 1;
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return 1;
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}
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}
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curr = curr->next;
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curr = curr->next;
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}
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}
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return 0;
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return 0;
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}
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}
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void atm_mpoa_disp_qos(char *page, int *len)
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void atm_mpoa_disp_qos(char *page, int *len)
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{
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{
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|
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unsigned char *ip;
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unsigned char *ip;
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char ipaddr[16];
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char ipaddr[16];
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struct atm_mpoa_qos *qos;
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struct atm_mpoa_qos *qos;
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|
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qos = qos_head;
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qos = qos_head;
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*len += sprintf(page + *len, "QoS entries for shortcuts:\n");
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*len += sprintf(page + *len, "QoS entries for shortcuts:\n");
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*len += sprintf(page + *len, "IP address\n TX:max_pcr pcr min_pcr max_cdv max_sdu\n RX:max_pcr pcr min_pcr max_cdv max_sdu\n");
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*len += sprintf(page + *len, "IP address\n TX:max_pcr pcr min_pcr max_cdv max_sdu\n RX:max_pcr pcr min_pcr max_cdv max_sdu\n");
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|
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ipaddr[sizeof(ipaddr)-1] = '\0';
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ipaddr[sizeof(ipaddr)-1] = '\0';
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while (qos != NULL) {
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while (qos != NULL) {
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ip = (unsigned char *)&qos->ipaddr;
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ip = (unsigned char *)&qos->ipaddr;
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sprintf(ipaddr, "%u.%u.%u.%u", NIPQUAD(ip));
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sprintf(ipaddr, "%u.%u.%u.%u", NIPQUAD(ip));
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*len += sprintf(page + *len, "%u.%u.%u.%u\n %-7d %-7d %-7d %-7d %-7d\n %-7d %-7d %-7d %-7d %-7d\n",
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*len += sprintf(page + *len, "%u.%u.%u.%u\n %-7d %-7d %-7d %-7d %-7d\n %-7d %-7d %-7d %-7d %-7d\n",
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NIPQUAD(ipaddr),
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NIPQUAD(ipaddr),
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qos->qos.txtp.max_pcr, qos->qos.txtp.pcr, qos->qos.txtp.min_pcr, qos->qos.txtp.max_cdv, qos->qos.txtp.max_sdu,
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qos->qos.txtp.max_pcr, qos->qos.txtp.pcr, qos->qos.txtp.min_pcr, qos->qos.txtp.max_cdv, qos->qos.txtp.max_sdu,
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qos->qos.rxtp.max_pcr, qos->qos.rxtp.pcr, qos->qos.rxtp.min_pcr, qos->qos.rxtp.max_cdv, qos->qos.rxtp.max_sdu);
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qos->qos.rxtp.max_pcr, qos->qos.rxtp.pcr, qos->qos.rxtp.min_pcr, qos->qos.rxtp.max_cdv, qos->qos.rxtp.max_sdu);
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qos = qos->next;
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qos = qos->next;
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}
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}
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|
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return;
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return;
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}
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}
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|
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static struct net_device *find_lec_by_itfnum(int itf)
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static struct net_device *find_lec_by_itfnum(int itf)
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{
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{
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struct net_device *dev;
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struct net_device *dev;
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if (!try_atm_lane_ops())
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if (!try_atm_lane_ops())
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return NULL;
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return NULL;
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|
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dev = atm_lane_ops->get_lec(itf);
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dev = atm_lane_ops->get_lec(itf);
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if (atm_lane_ops->owner)
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if (atm_lane_ops->owner)
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__MOD_DEC_USE_COUNT(atm_lane_ops->owner);
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__MOD_DEC_USE_COUNT(atm_lane_ops->owner);
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return dev;
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return dev;
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}
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}
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|
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static struct mpoa_client *alloc_mpc(void)
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static struct mpoa_client *alloc_mpc(void)
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{
|
{
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struct mpoa_client *mpc;
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struct mpoa_client *mpc;
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|
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mpc = kmalloc(sizeof (struct mpoa_client), GFP_KERNEL);
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mpc = kmalloc(sizeof (struct mpoa_client), GFP_KERNEL);
|
if (mpc == NULL)
|
if (mpc == NULL)
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return NULL;
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return NULL;
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memset(mpc, 0, sizeof(struct mpoa_client));
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memset(mpc, 0, sizeof(struct mpoa_client));
|
mpc->ingress_lock = RW_LOCK_UNLOCKED;
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mpc->ingress_lock = RW_LOCK_UNLOCKED;
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mpc->egress_lock = RW_LOCK_UNLOCKED;
|
mpc->egress_lock = RW_LOCK_UNLOCKED;
|
mpc->next = mpcs;
|
mpc->next = mpcs;
|
atm_mpoa_init_cache(mpc);
|
atm_mpoa_init_cache(mpc);
|
|
|
mpc->parameters.mpc_p1 = MPC_P1;
|
mpc->parameters.mpc_p1 = MPC_P1;
|
mpc->parameters.mpc_p2 = MPC_P2;
|
mpc->parameters.mpc_p2 = MPC_P2;
|
memset(mpc->parameters.mpc_p3,0,sizeof(mpc->parameters.mpc_p3));
|
memset(mpc->parameters.mpc_p3,0,sizeof(mpc->parameters.mpc_p3));
|
mpc->parameters.mpc_p4 = MPC_P4;
|
mpc->parameters.mpc_p4 = MPC_P4;
|
mpc->parameters.mpc_p5 = MPC_P5;
|
mpc->parameters.mpc_p5 = MPC_P5;
|
mpc->parameters.mpc_p6 = MPC_P6;
|
mpc->parameters.mpc_p6 = MPC_P6;
|
|
|
mpcs = mpc;
|
mpcs = mpc;
|
|
|
return mpc;
|
return mpc;
|
}
|
}
|
|
|
/*
|
/*
|
*
|
*
|
* start_mpc() puts the MPC on line. All the packets destined
|
* start_mpc() puts the MPC on line. All the packets destined
|
* to the lec underneath us are now being monitored and
|
* to the lec underneath us are now being monitored and
|
* shortcuts will be established.
|
* shortcuts will be established.
|
*
|
*
|
*/
|
*/
|
static void start_mpc(struct mpoa_client *mpc, struct net_device *dev)
|
static void start_mpc(struct mpoa_client *mpc, struct net_device *dev)
|
{
|
{
|
|
|
dprintk("mpoa: (%s) start_mpc:\n", mpc->dev->name);
|
dprintk("mpoa: (%s) start_mpc:\n", mpc->dev->name);
|
if (dev->hard_start_xmit == NULL) {
|
if (dev->hard_start_xmit == NULL) {
|
printk("mpoa: (%s) start_mpc: dev->hard_start_xmit == NULL, not starting\n",
|
printk("mpoa: (%s) start_mpc: dev->hard_start_xmit == NULL, not starting\n",
|
dev->name);
|
dev->name);
|
return;
|
return;
|
}
|
}
|
mpc->old_hard_start_xmit = dev->hard_start_xmit;
|
mpc->old_hard_start_xmit = dev->hard_start_xmit;
|
dev->hard_start_xmit = mpc_send_packet;
|
dev->hard_start_xmit = mpc_send_packet;
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static void stop_mpc(struct mpoa_client *mpc)
|
static void stop_mpc(struct mpoa_client *mpc)
|
{
|
{
|
|
|
dprintk("mpoa: (%s) stop_mpc:", mpc->dev->name);
|
dprintk("mpoa: (%s) stop_mpc:", mpc->dev->name);
|
|
|
/* Lets not nullify lec device's dev->hard_start_xmit */
|
/* Lets not nullify lec device's dev->hard_start_xmit */
|
if (mpc->dev->hard_start_xmit != mpc_send_packet) {
|
if (mpc->dev->hard_start_xmit != mpc_send_packet) {
|
dprintk(" mpc already stopped, not fatal\n");
|
dprintk(" mpc already stopped, not fatal\n");
|
return;
|
return;
|
}
|
}
|
dprintk("\n");
|
dprintk("\n");
|
mpc->dev->hard_start_xmit = mpc->old_hard_start_xmit;
|
mpc->dev->hard_start_xmit = mpc->old_hard_start_xmit;
|
mpc->old_hard_start_xmit = NULL;
|
mpc->old_hard_start_xmit = NULL;
|
/* close_shortcuts(mpc); ??? FIXME */
|
/* close_shortcuts(mpc); ??? FIXME */
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static const char * __attribute__ ((unused)) mpoa_device_type_string(char type)
|
static const char * __attribute__ ((unused)) mpoa_device_type_string(char type)
|
{
|
{
|
switch(type) {
|
switch(type) {
|
case NON_MPOA:
|
case NON_MPOA:
|
return "non-MPOA device";
|
return "non-MPOA device";
|
break;
|
break;
|
case MPS:
|
case MPS:
|
return "MPS";
|
return "MPS";
|
break;
|
break;
|
case MPC:
|
case MPC:
|
return "MPC";
|
return "MPC";
|
break;
|
break;
|
case MPS_AND_MPC:
|
case MPS_AND_MPC:
|
return "both MPS and MPC";
|
return "both MPS and MPC";
|
break;
|
break;
|
default:
|
default:
|
return "unspecified (non-MPOA) device";
|
return "unspecified (non-MPOA) device";
|
break;
|
break;
|
}
|
}
|
|
|
return ""; /* not reached */
|
return ""; /* not reached */
|
}
|
}
|
|
|
/*
|
/*
|
* lec device calls this via its dev->priv->lane2_ops->associate_indicator()
|
* lec device calls this via its dev->priv->lane2_ops->associate_indicator()
|
* when it sees a TLV in LE_ARP packet.
|
* when it sees a TLV in LE_ARP packet.
|
* We fill in the pointer above when we see a LANE2 lec initializing
|
* We fill in the pointer above when we see a LANE2 lec initializing
|
* See LANE2 spec 3.1.5
|
* See LANE2 spec 3.1.5
|
*
|
*
|
* Quite a big and ugly function but when you look at it
|
* Quite a big and ugly function but when you look at it
|
* all it does is to try to locate and parse MPOA Device
|
* all it does is to try to locate and parse MPOA Device
|
* Type TLV.
|
* Type TLV.
|
* We give our lec a pointer to this function and when the
|
* We give our lec a pointer to this function and when the
|
* lec sees a TLV it uses the pointer to call this function.
|
* lec sees a TLV it uses the pointer to call this function.
|
*
|
*
|
*/
|
*/
|
static void lane2_assoc_ind(struct net_device *dev, uint8_t *mac_addr,
|
static void lane2_assoc_ind(struct net_device *dev, uint8_t *mac_addr,
|
uint8_t *tlvs, uint32_t sizeoftlvs)
|
uint8_t *tlvs, uint32_t sizeoftlvs)
|
{
|
{
|
uint32_t type;
|
uint32_t type;
|
uint8_t length, mpoa_device_type, number_of_mps_macs;
|
uint8_t length, mpoa_device_type, number_of_mps_macs;
|
uint8_t *end_of_tlvs;
|
uint8_t *end_of_tlvs;
|
struct mpoa_client *mpc;
|
struct mpoa_client *mpc;
|
|
|
mpoa_device_type = number_of_mps_macs = 0; /* silence gcc */
|
mpoa_device_type = number_of_mps_macs = 0; /* silence gcc */
|
dprintk("mpoa: (%s) lane2_assoc_ind: received TLV(s), ", dev->name);
|
dprintk("mpoa: (%s) lane2_assoc_ind: received TLV(s), ", dev->name);
|
dprintk("total length of all TLVs %d\n", sizeoftlvs);
|
dprintk("total length of all TLVs %d\n", sizeoftlvs);
|
mpc = find_mpc_by_lec(dev); /* Sampo-Fix: moved here from below */
|
mpc = find_mpc_by_lec(dev); /* Sampo-Fix: moved here from below */
|
if (mpc == NULL) {
|
if (mpc == NULL) {
|
printk("mpoa: (%s) lane2_assoc_ind: no mpc\n", dev->name);
|
printk("mpoa: (%s) lane2_assoc_ind: no mpc\n", dev->name);
|
return;
|
return;
|
}
|
}
|
end_of_tlvs = tlvs + sizeoftlvs;
|
end_of_tlvs = tlvs + sizeoftlvs;
|
while (end_of_tlvs - tlvs >= 5) {
|
while (end_of_tlvs - tlvs >= 5) {
|
type = (tlvs[0] << 24) | (tlvs[1] << 16) | (tlvs[2] << 8) | tlvs[3];
|
type = (tlvs[0] << 24) | (tlvs[1] << 16) | (tlvs[2] << 8) | tlvs[3];
|
length = tlvs[4];
|
length = tlvs[4];
|
tlvs += 5;
|
tlvs += 5;
|
dprintk(" type 0x%x length %02x\n", type, length);
|
dprintk(" type 0x%x length %02x\n", type, length);
|
if (tlvs + length > end_of_tlvs) {
|
if (tlvs + length > end_of_tlvs) {
|
printk("TLV value extends past its buffer, aborting parse\n");
|
printk("TLV value extends past its buffer, aborting parse\n");
|
return;
|
return;
|
}
|
}
|
|
|
if (type == 0) {
|
if (type == 0) {
|
printk("mpoa: (%s) lane2_assoc_ind: TLV type was 0, returning\n", dev->name);
|
printk("mpoa: (%s) lane2_assoc_ind: TLV type was 0, returning\n", dev->name);
|
return;
|
return;
|
}
|
}
|
|
|
if (type != TLV_MPOA_DEVICE_TYPE) {
|
if (type != TLV_MPOA_DEVICE_TYPE) {
|
tlvs += length;
|
tlvs += length;
|
continue; /* skip other TLVs */
|
continue; /* skip other TLVs */
|
}
|
}
|
mpoa_device_type = *tlvs++;
|
mpoa_device_type = *tlvs++;
|
number_of_mps_macs = *tlvs++;
|
number_of_mps_macs = *tlvs++;
|
dprintk("mpoa: (%s) MPOA device type '%s', ", dev->name, mpoa_device_type_string(mpoa_device_type));
|
dprintk("mpoa: (%s) MPOA device type '%s', ", dev->name, mpoa_device_type_string(mpoa_device_type));
|
if (mpoa_device_type == MPS_AND_MPC &&
|
if (mpoa_device_type == MPS_AND_MPC &&
|
length < (42 + number_of_mps_macs*ETH_ALEN)) { /* :) */
|
length < (42 + number_of_mps_macs*ETH_ALEN)) { /* :) */
|
printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n",
|
printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n",
|
dev->name);
|
dev->name);
|
continue;
|
continue;
|
}
|
}
|
if ((mpoa_device_type == MPS || mpoa_device_type == MPC)
|
if ((mpoa_device_type == MPS || mpoa_device_type == MPC)
|
&& length < 22 + number_of_mps_macs*ETH_ALEN) {
|
&& length < 22 + number_of_mps_macs*ETH_ALEN) {
|
printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n",
|
printk("\nmpoa: (%s) lane2_assoc_ind: short MPOA Device Type TLV\n",
|
dev->name);
|
dev->name);
|
continue;
|
continue;
|
}
|
}
|
if (mpoa_device_type != MPS && mpoa_device_type != MPS_AND_MPC) {
|
if (mpoa_device_type != MPS && mpoa_device_type != MPS_AND_MPC) {
|
dprintk("ignoring non-MPS device\n");
|
dprintk("ignoring non-MPS device\n");
|
if (mpoa_device_type == MPC) tlvs += 20;
|
if (mpoa_device_type == MPC) tlvs += 20;
|
continue; /* we are only interested in MPSs */
|
continue; /* we are only interested in MPSs */
|
}
|
}
|
if (number_of_mps_macs == 0 && mpoa_device_type == MPS_AND_MPC) {
|
if (number_of_mps_macs == 0 && mpoa_device_type == MPS_AND_MPC) {
|
printk("\nmpoa: (%s) lane2_assoc_ind: MPS_AND_MPC has zero MACs\n", dev->name);
|
printk("\nmpoa: (%s) lane2_assoc_ind: MPS_AND_MPC has zero MACs\n", dev->name);
|
continue; /* someone should read the spec */
|
continue; /* someone should read the spec */
|
}
|
}
|
dprintk("this MPS has %d MAC addresses\n", number_of_mps_macs);
|
dprintk("this MPS has %d MAC addresses\n", number_of_mps_macs);
|
|
|
/* ok, now we can go and tell our daemon the control address of MPS */
|
/* ok, now we can go and tell our daemon the control address of MPS */
|
send_set_mps_ctrl_addr(tlvs, mpc);
|
send_set_mps_ctrl_addr(tlvs, mpc);
|
|
|
tlvs = copy_macs(mpc, mac_addr, tlvs, number_of_mps_macs, mpoa_device_type);
|
tlvs = copy_macs(mpc, mac_addr, tlvs, number_of_mps_macs, mpoa_device_type);
|
if (tlvs == NULL) return;
|
if (tlvs == NULL) return;
|
}
|
}
|
if (end_of_tlvs - tlvs != 0)
|
if (end_of_tlvs - tlvs != 0)
|
printk("mpoa: (%s) lane2_assoc_ind: ignoring %d bytes of trailing TLV carbage\n",
|
printk("mpoa: (%s) lane2_assoc_ind: ignoring %d bytes of trailing TLV carbage\n",
|
dev->name, end_of_tlvs - tlvs);
|
dev->name, end_of_tlvs - tlvs);
|
return;
|
return;
|
}
|
}
|
|
|
/*
|
/*
|
* Store at least advertizing router's MAC address
|
* Store at least advertizing router's MAC address
|
* plus the possible MAC address(es) to mpc->mps_macs.
|
* plus the possible MAC address(es) to mpc->mps_macs.
|
* For a freshly allocated MPOA client mpc->mps_macs == 0.
|
* For a freshly allocated MPOA client mpc->mps_macs == 0.
|
*/
|
*/
|
static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac,
|
static uint8_t *copy_macs(struct mpoa_client *mpc, uint8_t *router_mac,
|
uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type)
|
uint8_t *tlvs, uint8_t mps_macs, uint8_t device_type)
|
{
|
{
|
int num_macs;
|
int num_macs;
|
num_macs = (mps_macs > 1) ? mps_macs : 1;
|
num_macs = (mps_macs > 1) ? mps_macs : 1;
|
|
|
if (mpc->number_of_mps_macs != num_macs) { /* need to reallocate? */
|
if (mpc->number_of_mps_macs != num_macs) { /* need to reallocate? */
|
if (mpc->number_of_mps_macs != 0) kfree(mpc->mps_macs);
|
if (mpc->number_of_mps_macs != 0) kfree(mpc->mps_macs);
|
mpc->number_of_mps_macs = 0;
|
mpc->number_of_mps_macs = 0;
|
mpc->mps_macs = kmalloc(num_macs*ETH_ALEN, GFP_KERNEL);
|
mpc->mps_macs = kmalloc(num_macs*ETH_ALEN, GFP_KERNEL);
|
if (mpc->mps_macs == NULL) {
|
if (mpc->mps_macs == NULL) {
|
printk("mpoa: (%s) copy_macs: out of mem\n", mpc->dev->name);
|
printk("mpoa: (%s) copy_macs: out of mem\n", mpc->dev->name);
|
return NULL;
|
return NULL;
|
}
|
}
|
}
|
}
|
memcpy(mpc->mps_macs, router_mac, ETH_ALEN);
|
memcpy(mpc->mps_macs, router_mac, ETH_ALEN);
|
tlvs += 20; if (device_type == MPS_AND_MPC) tlvs += 20;
|
tlvs += 20; if (device_type == MPS_AND_MPC) tlvs += 20;
|
if (mps_macs > 0)
|
if (mps_macs > 0)
|
memcpy(mpc->mps_macs, tlvs, mps_macs*ETH_ALEN);
|
memcpy(mpc->mps_macs, tlvs, mps_macs*ETH_ALEN);
|
tlvs += mps_macs*ETH_ALEN;
|
tlvs += mps_macs*ETH_ALEN;
|
mpc->number_of_mps_macs = num_macs;
|
mpc->number_of_mps_macs = num_macs;
|
|
|
return tlvs;
|
return tlvs;
|
}
|
}
|
|
|
static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc)
|
static int send_via_shortcut(struct sk_buff *skb, struct mpoa_client *mpc)
|
{
|
{
|
in_cache_entry *entry;
|
in_cache_entry *entry;
|
struct iphdr *iph;
|
struct iphdr *iph;
|
char *buff;
|
char *buff;
|
uint32_t ipaddr = 0;
|
uint32_t ipaddr = 0;
|
|
|
static struct {
|
static struct {
|
struct llc_snap_hdr hdr;
|
struct llc_snap_hdr hdr;
|
uint32_t tag;
|
uint32_t tag;
|
} tagged_llc_snap_hdr = {
|
} tagged_llc_snap_hdr = {
|
{0xaa, 0xaa, 0x03, {0x00, 0x00, 0x00}, {0x88, 0x4c}},
|
{0xaa, 0xaa, 0x03, {0x00, 0x00, 0x00}, {0x88, 0x4c}},
|
0
|
0
|
};
|
};
|
|
|
buff = skb->data + mpc->dev->hard_header_len;
|
buff = skb->data + mpc->dev->hard_header_len;
|
iph = (struct iphdr *)buff;
|
iph = (struct iphdr *)buff;
|
ipaddr = iph->daddr;
|
ipaddr = iph->daddr;
|
|
|
ddprintk("mpoa: (%s) send_via_shortcut: ipaddr 0x%x\n", mpc->dev->name, ipaddr);
|
ddprintk("mpoa: (%s) send_via_shortcut: ipaddr 0x%x\n", mpc->dev->name, ipaddr);
|
|
|
entry = mpc->in_ops->get(ipaddr, mpc);
|
entry = mpc->in_ops->get(ipaddr, mpc);
|
if (entry == NULL) {
|
if (entry == NULL) {
|
entry = mpc->in_ops->add_entry(ipaddr, mpc);
|
entry = mpc->in_ops->add_entry(ipaddr, mpc);
|
if (entry != NULL) mpc->in_ops->put(entry);
|
if (entry != NULL) mpc->in_ops->put(entry);
|
return 1;
|
return 1;
|
}
|
}
|
if (mpc->in_ops->cache_hit(entry, mpc) != OPEN){ /* threshold not exceeded or VCC not ready */
|
if (mpc->in_ops->cache_hit(entry, mpc) != OPEN){ /* threshold not exceeded or VCC not ready */
|
ddprintk("mpoa: (%s) send_via_shortcut: cache_hit: returns != OPEN\n", mpc->dev->name);
|
ddprintk("mpoa: (%s) send_via_shortcut: cache_hit: returns != OPEN\n", mpc->dev->name);
|
mpc->in_ops->put(entry);
|
mpc->in_ops->put(entry);
|
return 1;
|
return 1;
|
}
|
}
|
|
|
ddprintk("mpoa: (%s) send_via_shortcut: using shortcut\n", mpc->dev->name);
|
ddprintk("mpoa: (%s) send_via_shortcut: using shortcut\n", mpc->dev->name);
|
/* MPOA spec A.1.4, MPOA client must decrement IP ttl at least by one */
|
/* MPOA spec A.1.4, MPOA client must decrement IP ttl at least by one */
|
if (iph->ttl <= 1) {
|
if (iph->ttl <= 1) {
|
ddprintk("mpoa: (%s) send_via_shortcut: IP ttl = %u, using LANE\n", mpc->dev->name, iph->ttl);
|
ddprintk("mpoa: (%s) send_via_shortcut: IP ttl = %u, using LANE\n", mpc->dev->name, iph->ttl);
|
mpc->in_ops->put(entry);
|
mpc->in_ops->put(entry);
|
return 1;
|
return 1;
|
}
|
}
|
iph->ttl--;
|
iph->ttl--;
|
iph->check = 0;
|
iph->check = 0;
|
iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
|
iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
|
|
|
if (entry->ctrl_info.tag != 0) {
|
if (entry->ctrl_info.tag != 0) {
|
ddprintk("mpoa: (%s) send_via_shortcut: adding tag 0x%x\n", mpc->dev->name, entry->ctrl_info.tag);
|
ddprintk("mpoa: (%s) send_via_shortcut: adding tag 0x%x\n", mpc->dev->name, entry->ctrl_info.tag);
|
tagged_llc_snap_hdr.tag = entry->ctrl_info.tag;
|
tagged_llc_snap_hdr.tag = entry->ctrl_info.tag;
|
skb_pull(skb, ETH_HLEN); /* get rid of Eth header */
|
skb_pull(skb, ETH_HLEN); /* get rid of Eth header */
|
skb_push(skb, sizeof(tagged_llc_snap_hdr)); /* add LLC/SNAP header */
|
skb_push(skb, sizeof(tagged_llc_snap_hdr)); /* add LLC/SNAP header */
|
memcpy(skb->data, &tagged_llc_snap_hdr, sizeof(tagged_llc_snap_hdr));
|
memcpy(skb->data, &tagged_llc_snap_hdr, sizeof(tagged_llc_snap_hdr));
|
} else {
|
} else {
|
skb_pull(skb, ETH_HLEN); /* get rid of Eth header */
|
skb_pull(skb, ETH_HLEN); /* get rid of Eth header */
|
skb_push(skb, sizeof(struct llc_snap_hdr)); /* add LLC/SNAP header + tag */
|
skb_push(skb, sizeof(struct llc_snap_hdr)); /* add LLC/SNAP header + tag */
|
memcpy(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr));
|
memcpy(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr));
|
}
|
}
|
|
|
atomic_add(skb->truesize, &entry->shortcut->sk->wmem_alloc);
|
atomic_add(skb->truesize, &entry->shortcut->sk->wmem_alloc);
|
ATM_SKB(skb)->atm_options = entry->shortcut->atm_options;
|
ATM_SKB(skb)->atm_options = entry->shortcut->atm_options;
|
entry->shortcut->send(entry->shortcut, skb);
|
entry->shortcut->send(entry->shortcut, skb);
|
entry->packets_fwded++;
|
entry->packets_fwded++;
|
mpc->in_ops->put(entry);
|
mpc->in_ops->put(entry);
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* Probably needs some error checks and locking, not sure...
|
* Probably needs some error checks and locking, not sure...
|
*/
|
*/
|
static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev)
|
static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev)
|
{
|
{
|
int retval;
|
int retval;
|
struct mpoa_client *mpc;
|
struct mpoa_client *mpc;
|
struct ethhdr *eth;
|
struct ethhdr *eth;
|
int i = 0;
|
int i = 0;
|
|
|
mpc = find_mpc_by_lec(dev); /* this should NEVER fail */
|
mpc = find_mpc_by_lec(dev); /* this should NEVER fail */
|
if(mpc == NULL) {
|
if(mpc == NULL) {
|
printk("mpoa: (%s) mpc_send_packet: no MPC found\n", dev->name);
|
printk("mpoa: (%s) mpc_send_packet: no MPC found\n", dev->name);
|
goto non_ip;
|
goto non_ip;
|
}
|
}
|
|
|
eth = (struct ethhdr *)skb->data;
|
eth = (struct ethhdr *)skb->data;
|
if (eth->h_proto != htons(ETH_P_IP))
|
if (eth->h_proto != htons(ETH_P_IP))
|
goto non_ip; /* Multi-Protocol Over ATM :-) */
|
goto non_ip; /* Multi-Protocol Over ATM :-) */
|
|
|
while (i < mpc->number_of_mps_macs) {
|
while (i < mpc->number_of_mps_macs) {
|
if (memcmp(eth->h_dest, (mpc->mps_macs + i*ETH_ALEN), ETH_ALEN) == 0)
|
if (memcmp(eth->h_dest, (mpc->mps_macs + i*ETH_ALEN), ETH_ALEN) == 0)
|
if ( send_via_shortcut(skb, mpc) == 0 ) /* try shortcut */
|
if ( send_via_shortcut(skb, mpc) == 0 ) /* try shortcut */
|
return 0; /* success! */
|
return 0; /* success! */
|
i++;
|
i++;
|
}
|
}
|
|
|
non_ip:
|
non_ip:
|
retval = mpc->old_hard_start_xmit(skb,dev);
|
retval = mpc->old_hard_start_xmit(skb,dev);
|
|
|
return retval;
|
return retval;
|
}
|
}
|
|
|
int atm_mpoa_vcc_attach(struct atm_vcc *vcc, long arg)
|
int atm_mpoa_vcc_attach(struct atm_vcc *vcc, long arg)
|
{
|
{
|
int bytes_left;
|
int bytes_left;
|
struct mpoa_client *mpc;
|
struct mpoa_client *mpc;
|
struct atmmpc_ioc ioc_data;
|
struct atmmpc_ioc ioc_data;
|
in_cache_entry *in_entry;
|
in_cache_entry *in_entry;
|
uint32_t ipaddr;
|
uint32_t ipaddr;
|
unsigned char *ip;
|
unsigned char *ip;
|
|
|
bytes_left = copy_from_user(&ioc_data, (void *)arg, sizeof(struct atmmpc_ioc));
|
bytes_left = copy_from_user(&ioc_data, (void *)arg, sizeof(struct atmmpc_ioc));
|
if (bytes_left != 0) {
|
if (bytes_left != 0) {
|
printk("mpoa: mpc_vcc_attach: Short read (missed %d bytes) from userland\n", bytes_left);
|
printk("mpoa: mpc_vcc_attach: Short read (missed %d bytes) from userland\n", bytes_left);
|
return -EFAULT;
|
return -EFAULT;
|
}
|
}
|
ipaddr = ioc_data.ipaddr;
|
ipaddr = ioc_data.ipaddr;
|
if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF)
|
if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
mpc = find_mpc_by_itfnum(ioc_data.dev_num);
|
mpc = find_mpc_by_itfnum(ioc_data.dev_num);
|
if (mpc == NULL)
|
if (mpc == NULL)
|
return -EINVAL;
|
return -EINVAL;
|
|
|
if (ioc_data.type == MPC_SOCKET_INGRESS) {
|
if (ioc_data.type == MPC_SOCKET_INGRESS) {
|
in_entry = mpc->in_ops->get(ipaddr, mpc);
|
in_entry = mpc->in_ops->get(ipaddr, mpc);
|
if (in_entry == NULL || in_entry->entry_state < INGRESS_RESOLVED) {
|
if (in_entry == NULL || in_entry->entry_state < INGRESS_RESOLVED) {
|
printk("mpoa: (%s) mpc_vcc_attach: did not find RESOLVED entry from ingress cache\n",
|
printk("mpoa: (%s) mpc_vcc_attach: did not find RESOLVED entry from ingress cache\n",
|
mpc->dev->name);
|
mpc->dev->name);
|
if (in_entry != NULL) mpc->in_ops->put(in_entry);
|
if (in_entry != NULL) mpc->in_ops->put(in_entry);
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
ip = (unsigned char*)&in_entry->ctrl_info.in_dst_ip;
|
ip = (unsigned char*)&in_entry->ctrl_info.in_dst_ip;
|
printk("mpoa: (%s) mpc_vcc_attach: attaching ingress SVC, entry = %u.%u.%u.%u\n",
|
printk("mpoa: (%s) mpc_vcc_attach: attaching ingress SVC, entry = %u.%u.%u.%u\n",
|
mpc->dev->name, ip[0], ip[1], ip[2], ip[3]);
|
mpc->dev->name, ip[0], ip[1], ip[2], ip[3]);
|
in_entry->shortcut = vcc;
|
in_entry->shortcut = vcc;
|
mpc->in_ops->put(in_entry);
|
mpc->in_ops->put(in_entry);
|
} else {
|
} else {
|
printk("mpoa: (%s) mpc_vcc_attach: attaching egress SVC\n", mpc->dev->name);
|
printk("mpoa: (%s) mpc_vcc_attach: attaching egress SVC\n", mpc->dev->name);
|
}
|
}
|
|
|
vcc->proto_data = mpc->dev;
|
vcc->proto_data = mpc->dev;
|
vcc->push = mpc_push;
|
vcc->push = mpc_push;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
*
|
*
|
*/
|
*/
|
static void mpc_vcc_close(struct atm_vcc *vcc, struct net_device *dev)
|
static void mpc_vcc_close(struct atm_vcc *vcc, struct net_device *dev)
|
{
|
{
|
struct mpoa_client *mpc;
|
struct mpoa_client *mpc;
|
in_cache_entry *in_entry;
|
in_cache_entry *in_entry;
|
eg_cache_entry *eg_entry;
|
eg_cache_entry *eg_entry;
|
|
|
mpc = find_mpc_by_lec(dev);
|
mpc = find_mpc_by_lec(dev);
|
if (mpc == NULL) {
|
if (mpc == NULL) {
|
printk("mpoa: (%s) mpc_vcc_close: close for unknown MPC\n", dev->name);
|
printk("mpoa: (%s) mpc_vcc_close: close for unknown MPC\n", dev->name);
|
return;
|
return;
|
}
|
}
|
|
|
dprintk("mpoa: (%s) mpc_vcc_close:\n", dev->name);
|
dprintk("mpoa: (%s) mpc_vcc_close:\n", dev->name);
|
in_entry = mpc->in_ops->get_by_vcc(vcc, mpc);
|
in_entry = mpc->in_ops->get_by_vcc(vcc, mpc);
|
if (in_entry) {
|
if (in_entry) {
|
unsigned char *ip __attribute__ ((unused)) =
|
unsigned char *ip __attribute__ ((unused)) =
|
(unsigned char *)&in_entry->ctrl_info.in_dst_ip;
|
(unsigned char *)&in_entry->ctrl_info.in_dst_ip;
|
dprintk("mpoa: (%s) mpc_vcc_close: ingress SVC closed ip = %u.%u.%u.%u\n",
|
dprintk("mpoa: (%s) mpc_vcc_close: ingress SVC closed ip = %u.%u.%u.%u\n",
|
mpc->dev->name, ip[0], ip[1], ip[2], ip[3]);
|
mpc->dev->name, ip[0], ip[1], ip[2], ip[3]);
|
in_entry->shortcut = NULL;
|
in_entry->shortcut = NULL;
|
mpc->in_ops->put(in_entry);
|
mpc->in_ops->put(in_entry);
|
}
|
}
|
eg_entry = mpc->eg_ops->get_by_vcc(vcc, mpc);
|
eg_entry = mpc->eg_ops->get_by_vcc(vcc, mpc);
|
if (eg_entry) {
|
if (eg_entry) {
|
dprintk("mpoa: (%s) mpc_vcc_close: egress SVC closed\n", mpc->dev->name);
|
dprintk("mpoa: (%s) mpc_vcc_close: egress SVC closed\n", mpc->dev->name);
|
eg_entry->shortcut = NULL;
|
eg_entry->shortcut = NULL;
|
mpc->eg_ops->put(eg_entry);
|
mpc->eg_ops->put(eg_entry);
|
}
|
}
|
|
|
if (in_entry == NULL && eg_entry == NULL)
|
if (in_entry == NULL && eg_entry == NULL)
|
dprintk("mpoa: (%s) mpc_vcc_close: unused vcc closed\n", dev->name);
|
dprintk("mpoa: (%s) mpc_vcc_close: unused vcc closed\n", dev->name);
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb)
|
static void mpc_push(struct atm_vcc *vcc, struct sk_buff *skb)
|
{
|
{
|
struct net_device *dev = (struct net_device *)vcc->proto_data;
|
struct net_device *dev = (struct net_device *)vcc->proto_data;
|
struct sk_buff *new_skb;
|
struct sk_buff *new_skb;
|
eg_cache_entry *eg;
|
eg_cache_entry *eg;
|
struct mpoa_client *mpc;
|
struct mpoa_client *mpc;
|
uint32_t tag;
|
uint32_t tag;
|
char *tmp;
|
char *tmp;
|
|
|
ddprintk("mpoa: (%s) mpc_push:\n", dev->name);
|
ddprintk("mpoa: (%s) mpc_push:\n", dev->name);
|
if (skb == NULL) {
|
if (skb == NULL) {
|
dprintk("mpoa: (%s) mpc_push: null skb, closing VCC\n", dev->name);
|
dprintk("mpoa: (%s) mpc_push: null skb, closing VCC\n", dev->name);
|
mpc_vcc_close(vcc, dev);
|
mpc_vcc_close(vcc, dev);
|
return;
|
return;
|
}
|
}
|
|
|
skb->dev = dev;
|
skb->dev = dev;
|
if (memcmp(skb->data, &llc_snap_mpoa_ctrl, sizeof(struct llc_snap_hdr)) == 0) {
|
if (memcmp(skb->data, &llc_snap_mpoa_ctrl, sizeof(struct llc_snap_hdr)) == 0) {
|
dprintk("mpoa: (%s) mpc_push: control packet arrived\n", dev->name);
|
dprintk("mpoa: (%s) mpc_push: control packet arrived\n", dev->name);
|
skb_queue_tail(&vcc->sk->receive_queue, skb); /* Pass control packets to daemon */
|
skb_queue_tail(&vcc->sk->receive_queue, skb); /* Pass control packets to daemon */
|
wake_up(&vcc->sleep);
|
wake_up(&vcc->sleep);
|
return;
|
return;
|
}
|
}
|
|
|
/* data coming over the shortcut */
|
/* data coming over the shortcut */
|
atm_return(vcc, skb->truesize);
|
atm_return(vcc, skb->truesize);
|
|
|
mpc = find_mpc_by_lec(dev);
|
mpc = find_mpc_by_lec(dev);
|
if (mpc == NULL) {
|
if (mpc == NULL) {
|
printk("mpoa: (%s) mpc_push: unknown MPC\n", dev->name);
|
printk("mpoa: (%s) mpc_push: unknown MPC\n", dev->name);
|
return;
|
return;
|
}
|
}
|
|
|
if (memcmp(skb->data, &llc_snap_mpoa_data_tagged, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA tagged data */
|
if (memcmp(skb->data, &llc_snap_mpoa_data_tagged, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA tagged data */
|
ddprintk("mpoa: (%s) mpc_push: tagged data packet arrived\n", dev->name);
|
ddprintk("mpoa: (%s) mpc_push: tagged data packet arrived\n", dev->name);
|
|
|
} else if (memcmp(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA data */
|
} else if (memcmp(skb->data, &llc_snap_mpoa_data, sizeof(struct llc_snap_hdr)) == 0) { /* MPOA data */
|
printk("mpoa: (%s) mpc_push: non-tagged data packet arrived\n", dev->name);
|
printk("mpoa: (%s) mpc_push: non-tagged data packet arrived\n", dev->name);
|
printk(" mpc_push: non-tagged data unsupported, purging\n");
|
printk(" mpc_push: non-tagged data unsupported, purging\n");
|
dev_kfree_skb_any(skb);
|
dev_kfree_skb_any(skb);
|
return;
|
return;
|
} else {
|
} else {
|
printk("mpoa: (%s) mpc_push: garbage arrived, purging\n", dev->name);
|
printk("mpoa: (%s) mpc_push: garbage arrived, purging\n", dev->name);
|
dev_kfree_skb_any(skb);
|
dev_kfree_skb_any(skb);
|
return;
|
return;
|
}
|
}
|
|
|
tmp = skb->data + sizeof(struct llc_snap_hdr);
|
tmp = skb->data + sizeof(struct llc_snap_hdr);
|
tag = *(uint32_t *)tmp;
|
tag = *(uint32_t *)tmp;
|
|
|
eg = mpc->eg_ops->get_by_tag(tag, mpc);
|
eg = mpc->eg_ops->get_by_tag(tag, mpc);
|
if (eg == NULL) {
|
if (eg == NULL) {
|
printk("mpoa: (%s) mpc_push: Didn't find egress cache entry, tag = %u\n",
|
printk("mpoa: (%s) mpc_push: Didn't find egress cache entry, tag = %u\n",
|
dev->name,tag);
|
dev->name,tag);
|
purge_egress_shortcut(vcc, NULL);
|
purge_egress_shortcut(vcc, NULL);
|
dev_kfree_skb_any(skb);
|
dev_kfree_skb_any(skb);
|
return;
|
return;
|
}
|
}
|
|
|
/*
|
/*
|
* See if ingress MPC is using shortcut we opened as a return channel.
|
* See if ingress MPC is using shortcut we opened as a return channel.
|
* This means we have a bi-directional vcc opened by us.
|
* This means we have a bi-directional vcc opened by us.
|
*/
|
*/
|
if (eg->shortcut == NULL) {
|
if (eg->shortcut == NULL) {
|
eg->shortcut = vcc;
|
eg->shortcut = vcc;
|
printk("mpoa: (%s) mpc_push: egress SVC in use\n", dev->name);
|
printk("mpoa: (%s) mpc_push: egress SVC in use\n", dev->name);
|
}
|
}
|
|
|
skb_pull(skb, sizeof(struct llc_snap_hdr) + sizeof(tag)); /* get rid of LLC/SNAP header */
|
skb_pull(skb, sizeof(struct llc_snap_hdr) + sizeof(tag)); /* get rid of LLC/SNAP header */
|
new_skb = skb_realloc_headroom(skb, eg->ctrl_info.DH_length); /* LLC/SNAP is shorter than MAC header :( */
|
new_skb = skb_realloc_headroom(skb, eg->ctrl_info.DH_length); /* LLC/SNAP is shorter than MAC header :( */
|
dev_kfree_skb_any(skb);
|
dev_kfree_skb_any(skb);
|
if (new_skb == NULL){
|
if (new_skb == NULL){
|
mpc->eg_ops->put(eg);
|
mpc->eg_ops->put(eg);
|
return;
|
return;
|
}
|
}
|
skb_push(new_skb, eg->ctrl_info.DH_length); /* add MAC header */
|
skb_push(new_skb, eg->ctrl_info.DH_length); /* add MAC header */
|
memcpy(new_skb->data, eg->ctrl_info.DLL_header, eg->ctrl_info.DH_length);
|
memcpy(new_skb->data, eg->ctrl_info.DLL_header, eg->ctrl_info.DH_length);
|
new_skb->protocol = eth_type_trans(new_skb, dev);
|
new_skb->protocol = eth_type_trans(new_skb, dev);
|
new_skb->nh.raw = new_skb->data;
|
new_skb->nh.raw = new_skb->data;
|
|
|
eg->latest_ip_addr = new_skb->nh.iph->saddr;
|
eg->latest_ip_addr = new_skb->nh.iph->saddr;
|
eg->packets_rcvd++;
|
eg->packets_rcvd++;
|
mpc->eg_ops->put(eg);
|
mpc->eg_ops->put(eg);
|
|
|
memset(ATM_SKB(new_skb), 0, sizeof(struct atm_skb_data));
|
memset(ATM_SKB(new_skb), 0, sizeof(struct atm_skb_data));
|
netif_rx(new_skb);
|
netif_rx(new_skb);
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static struct atmdev_ops mpc_ops = { /* only send is required */
|
static struct atmdev_ops mpc_ops = { /* only send is required */
|
.close = mpoad_close,
|
.close = mpoad_close,
|
.send = msg_from_mpoad
|
.send = msg_from_mpoad
|
};
|
};
|
|
|
static struct atm_dev mpc_dev = {
|
static struct atm_dev mpc_dev = {
|
.ops = &mpc_ops,
|
.ops = &mpc_ops,
|
.type = "mpc",
|
.type = "mpc",
|
.number = 42,
|
.number = 42,
|
.lock = SPIN_LOCK_UNLOCKED
|
.lock = SPIN_LOCK_UNLOCKED
|
/* rest of the members will be 0 */
|
/* rest of the members will be 0 */
|
};
|
};
|
|
|
int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg)
|
int atm_mpoa_mpoad_attach (struct atm_vcc *vcc, int arg)
|
{
|
{
|
struct mpoa_client *mpc;
|
struct mpoa_client *mpc;
|
struct lec_priv *priv;
|
struct lec_priv *priv;
|
|
|
if (mpcs == NULL) {
|
if (mpcs == NULL) {
|
init_timer(&mpc_timer);
|
init_timer(&mpc_timer);
|
mpc_timer_refresh();
|
mpc_timer_refresh();
|
|
|
/* This lets us now how our LECs are doing */
|
/* This lets us now how our LECs are doing */
|
register_netdevice_notifier(&mpoa_notifier);
|
register_netdevice_notifier(&mpoa_notifier);
|
}
|
}
|
|
|
mpc = find_mpc_by_itfnum(arg);
|
mpc = find_mpc_by_itfnum(arg);
|
if (mpc == NULL) {
|
if (mpc == NULL) {
|
dprintk("mpoa: mpoad_attach: allocating new mpc for itf %d\n", arg);
|
dprintk("mpoa: mpoad_attach: allocating new mpc for itf %d\n", arg);
|
mpc = alloc_mpc();
|
mpc = alloc_mpc();
|
if (mpc == NULL)
|
if (mpc == NULL)
|
return -ENOMEM;
|
return -ENOMEM;
|
mpc->dev_num = arg;
|
mpc->dev_num = arg;
|
mpc->dev = find_lec_by_itfnum(arg); /* NULL if there was no lec */
|
mpc->dev = find_lec_by_itfnum(arg); /* NULL if there was no lec */
|
}
|
}
|
if (mpc->mpoad_vcc) {
|
if (mpc->mpoad_vcc) {
|
printk("mpoa: mpoad_attach: mpoad is already present for itf %d\n", arg);
|
printk("mpoa: mpoad_attach: mpoad is already present for itf %d\n", arg);
|
return -EADDRINUSE;
|
return -EADDRINUSE;
|
}
|
}
|
|
|
if (mpc->dev) { /* check if the lec is LANE2 capable */
|
if (mpc->dev) { /* check if the lec is LANE2 capable */
|
priv = (struct lec_priv *)mpc->dev->priv;
|
priv = (struct lec_priv *)mpc->dev->priv;
|
if (priv->lane_version < 2) {
|
if (priv->lane_version < 2) {
|
dev_put(mpc->dev);
|
dev_put(mpc->dev);
|
mpc->dev = NULL;
|
mpc->dev = NULL;
|
} else
|
} else
|
priv->lane2_ops->associate_indicator = lane2_assoc_ind;
|
priv->lane2_ops->associate_indicator = lane2_assoc_ind;
|
}
|
}
|
|
|
mpc->mpoad_vcc = vcc;
|
mpc->mpoad_vcc = vcc;
|
vcc->dev = &mpc_dev;
|
vcc->dev = &mpc_dev;
|
vcc_insert_socket(vcc->sk);
|
vcc_insert_socket(vcc->sk);
|
set_bit(ATM_VF_META,&vcc->flags);
|
set_bit(ATM_VF_META,&vcc->flags);
|
set_bit(ATM_VF_READY,&vcc->flags);
|
set_bit(ATM_VF_READY,&vcc->flags);
|
|
|
if (mpc->dev) {
|
if (mpc->dev) {
|
char empty[ATM_ESA_LEN];
|
char empty[ATM_ESA_LEN];
|
memset(empty, 0, ATM_ESA_LEN);
|
memset(empty, 0, ATM_ESA_LEN);
|
|
|
start_mpc(mpc, mpc->dev);
|
start_mpc(mpc, mpc->dev);
|
/* set address if mpcd e.g. gets killed and restarted.
|
/* set address if mpcd e.g. gets killed and restarted.
|
* If we do not do it now we have to wait for the next LE_ARP
|
* If we do not do it now we have to wait for the next LE_ARP
|
*/
|
*/
|
if ( memcmp(mpc->mps_ctrl_addr, empty, ATM_ESA_LEN) != 0 )
|
if ( memcmp(mpc->mps_ctrl_addr, empty, ATM_ESA_LEN) != 0 )
|
send_set_mps_ctrl_addr(mpc->mps_ctrl_addr, mpc);
|
send_set_mps_ctrl_addr(mpc->mps_ctrl_addr, mpc);
|
}
|
}
|
|
|
MOD_INC_USE_COUNT;
|
MOD_INC_USE_COUNT;
|
return arg;
|
return arg;
|
}
|
}
|
|
|
static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc)
|
static void send_set_mps_ctrl_addr(char *addr, struct mpoa_client *mpc)
|
{
|
{
|
struct k_message mesg;
|
struct k_message mesg;
|
|
|
memcpy (mpc->mps_ctrl_addr, addr, ATM_ESA_LEN);
|
memcpy (mpc->mps_ctrl_addr, addr, ATM_ESA_LEN);
|
|
|
mesg.type = SET_MPS_CTRL_ADDR;
|
mesg.type = SET_MPS_CTRL_ADDR;
|
memcpy(mesg.MPS_ctrl, addr, ATM_ESA_LEN);
|
memcpy(mesg.MPS_ctrl, addr, ATM_ESA_LEN);
|
msg_to_mpoad(&mesg, mpc);
|
msg_to_mpoad(&mesg, mpc);
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static void mpoad_close(struct atm_vcc *vcc)
|
static void mpoad_close(struct atm_vcc *vcc)
|
{
|
{
|
struct mpoa_client *mpc;
|
struct mpoa_client *mpc;
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
|
|
mpc = find_mpc_by_vcc(vcc);
|
mpc = find_mpc_by_vcc(vcc);
|
if (mpc == NULL) {
|
if (mpc == NULL) {
|
printk("mpoa: mpoad_close: did not find MPC\n");
|
printk("mpoa: mpoad_close: did not find MPC\n");
|
return;
|
return;
|
}
|
}
|
if (!mpc->mpoad_vcc) {
|
if (!mpc->mpoad_vcc) {
|
printk("mpoa: mpoad_close: close for non-present mpoad\n");
|
printk("mpoa: mpoad_close: close for non-present mpoad\n");
|
return;
|
return;
|
}
|
}
|
|
|
mpc->mpoad_vcc = NULL;
|
mpc->mpoad_vcc = NULL;
|
if (mpc->dev) {
|
if (mpc->dev) {
|
struct lec_priv *priv = (struct lec_priv *)mpc->dev->priv;
|
struct lec_priv *priv = (struct lec_priv *)mpc->dev->priv;
|
priv->lane2_ops->associate_indicator = NULL;
|
priv->lane2_ops->associate_indicator = NULL;
|
stop_mpc(mpc);
|
stop_mpc(mpc);
|
dev_put(mpc->dev);
|
dev_put(mpc->dev);
|
}
|
}
|
|
|
mpc->in_ops->destroy_cache(mpc);
|
mpc->in_ops->destroy_cache(mpc);
|
mpc->eg_ops->destroy_cache(mpc);
|
mpc->eg_ops->destroy_cache(mpc);
|
|
|
while ( (skb = skb_dequeue(&vcc->sk->receive_queue)) ){
|
while ( (skb = skb_dequeue(&vcc->sk->receive_queue)) ){
|
atm_return(vcc, skb->truesize);
|
atm_return(vcc, skb->truesize);
|
kfree_skb(skb);
|
kfree_skb(skb);
|
}
|
}
|
|
|
printk("mpoa: (%s) going down\n",
|
printk("mpoa: (%s) going down\n",
|
(mpc->dev) ? mpc->dev->name : "<unknown>");
|
(mpc->dev) ? mpc->dev->name : "<unknown>");
|
MOD_DEC_USE_COUNT;
|
MOD_DEC_USE_COUNT;
|
|
|
return;
|
return;
|
}
|
}
|
|
|
/*
|
/*
|
*
|
*
|
*/
|
*/
|
static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb)
|
static int msg_from_mpoad(struct atm_vcc *vcc, struct sk_buff *skb)
|
{
|
{
|
|
|
struct mpoa_client *mpc = find_mpc_by_vcc(vcc);
|
struct mpoa_client *mpc = find_mpc_by_vcc(vcc);
|
struct k_message *mesg = (struct k_message*)skb->data;
|
struct k_message *mesg = (struct k_message*)skb->data;
|
atomic_sub(skb->truesize, &vcc->sk->wmem_alloc);
|
atomic_sub(skb->truesize, &vcc->sk->wmem_alloc);
|
|
|
if (mpc == NULL) {
|
if (mpc == NULL) {
|
printk("mpoa: msg_from_mpoad: no mpc found\n");
|
printk("mpoa: msg_from_mpoad: no mpc found\n");
|
return 0;
|
return 0;
|
}
|
}
|
dprintk("mpoa: (%s) msg_from_mpoad:", (mpc->dev) ? mpc->dev->name : "<unknown>");
|
dprintk("mpoa: (%s) msg_from_mpoad:", (mpc->dev) ? mpc->dev->name : "<unknown>");
|
switch(mesg->type) {
|
switch(mesg->type) {
|
case MPOA_RES_REPLY_RCVD:
|
case MPOA_RES_REPLY_RCVD:
|
dprintk(" mpoa_res_reply_rcvd\n");
|
dprintk(" mpoa_res_reply_rcvd\n");
|
MPOA_res_reply_rcvd(mesg, mpc);
|
MPOA_res_reply_rcvd(mesg, mpc);
|
break;
|
break;
|
case MPOA_TRIGGER_RCVD:
|
case MPOA_TRIGGER_RCVD:
|
dprintk(" mpoa_trigger_rcvd\n");
|
dprintk(" mpoa_trigger_rcvd\n");
|
MPOA_trigger_rcvd(mesg, mpc);
|
MPOA_trigger_rcvd(mesg, mpc);
|
break;
|
break;
|
case INGRESS_PURGE_RCVD:
|
case INGRESS_PURGE_RCVD:
|
dprintk(" nhrp_purge_rcvd\n");
|
dprintk(" nhrp_purge_rcvd\n");
|
ingress_purge_rcvd(mesg, mpc);
|
ingress_purge_rcvd(mesg, mpc);
|
break;
|
break;
|
case EGRESS_PURGE_RCVD:
|
case EGRESS_PURGE_RCVD:
|
dprintk(" egress_purge_reply_rcvd\n");
|
dprintk(" egress_purge_reply_rcvd\n");
|
egress_purge_rcvd(mesg, mpc);
|
egress_purge_rcvd(mesg, mpc);
|
break;
|
break;
|
case MPS_DEATH:
|
case MPS_DEATH:
|
dprintk(" mps_death\n");
|
dprintk(" mps_death\n");
|
mps_death(mesg, mpc);
|
mps_death(mesg, mpc);
|
break;
|
break;
|
case CACHE_IMPOS_RCVD:
|
case CACHE_IMPOS_RCVD:
|
dprintk(" cache_impos_rcvd\n");
|
dprintk(" cache_impos_rcvd\n");
|
MPOA_cache_impos_rcvd(mesg, mpc);
|
MPOA_cache_impos_rcvd(mesg, mpc);
|
break;
|
break;
|
case SET_MPC_CTRL_ADDR:
|
case SET_MPC_CTRL_ADDR:
|
dprintk(" set_mpc_ctrl_addr\n");
|
dprintk(" set_mpc_ctrl_addr\n");
|
set_mpc_ctrl_addr_rcvd(mesg, mpc);
|
set_mpc_ctrl_addr_rcvd(mesg, mpc);
|
break;
|
break;
|
case SET_MPS_MAC_ADDR:
|
case SET_MPS_MAC_ADDR:
|
dprintk(" set_mps_mac_addr\n");
|
dprintk(" set_mps_mac_addr\n");
|
set_mps_mac_addr_rcvd(mesg, mpc);
|
set_mps_mac_addr_rcvd(mesg, mpc);
|
break;
|
break;
|
case CLEAN_UP_AND_EXIT:
|
case CLEAN_UP_AND_EXIT:
|
dprintk(" clean_up_and_exit\n");
|
dprintk(" clean_up_and_exit\n");
|
clean_up(mesg, mpc, DIE);
|
clean_up(mesg, mpc, DIE);
|
break;
|
break;
|
case RELOAD:
|
case RELOAD:
|
dprintk(" reload\n");
|
dprintk(" reload\n");
|
clean_up(mesg, mpc, RELOAD);
|
clean_up(mesg, mpc, RELOAD);
|
break;
|
break;
|
case SET_MPC_PARAMS:
|
case SET_MPC_PARAMS:
|
dprintk(" set_mpc_params\n");
|
dprintk(" set_mpc_params\n");
|
mpc->parameters = mesg->content.params;
|
mpc->parameters = mesg->content.params;
|
break;
|
break;
|
default:
|
default:
|
dprintk(" unknown message %d\n", mesg->type);
|
dprintk(" unknown message %d\n", mesg->type);
|
break;
|
break;
|
}
|
}
|
kfree_skb(skb);
|
kfree_skb(skb);
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Remember that this function may not do things that sleep */
|
/* Remember that this function may not do things that sleep */
|
int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc)
|
int msg_to_mpoad(struct k_message *mesg, struct mpoa_client *mpc)
|
{
|
{
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
|
|
if (mpc == NULL || !mpc->mpoad_vcc) {
|
if (mpc == NULL || !mpc->mpoad_vcc) {
|
printk("mpoa: msg_to_mpoad: mesg %d to a non-existent mpoad\n", mesg->type);
|
printk("mpoa: msg_to_mpoad: mesg %d to a non-existent mpoad\n", mesg->type);
|
return -ENXIO;
|
return -ENXIO;
|
}
|
}
|
|
|
skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC);
|
skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC);
|
if (skb == NULL)
|
if (skb == NULL)
|
return -ENOMEM;
|
return -ENOMEM;
|
skb_put(skb, sizeof(struct k_message));
|
skb_put(skb, sizeof(struct k_message));
|
memcpy(skb->data, mesg, sizeof(struct k_message));
|
memcpy(skb->data, mesg, sizeof(struct k_message));
|
atm_force_charge(mpc->mpoad_vcc, skb->truesize);
|
atm_force_charge(mpc->mpoad_vcc, skb->truesize);
|
skb_queue_tail(&mpc->mpoad_vcc->sk->receive_queue, skb);
|
skb_queue_tail(&mpc->mpoad_vcc->sk->receive_queue, skb);
|
wake_up(&mpc->mpoad_vcc->sleep);
|
wake_up(&mpc->mpoad_vcc->sleep);
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev_ptr)
|
static int mpoa_event_listener(struct notifier_block *mpoa_notifier, unsigned long event, void *dev_ptr)
|
{
|
{
|
struct net_device *dev;
|
struct net_device *dev;
|
struct mpoa_client *mpc;
|
struct mpoa_client *mpc;
|
struct lec_priv *priv;
|
struct lec_priv *priv;
|
|
|
dev = (struct net_device *)dev_ptr;
|
dev = (struct net_device *)dev_ptr;
|
if (dev->name == NULL || strncmp(dev->name, "lec", 3))
|
if (dev->name == NULL || strncmp(dev->name, "lec", 3))
|
return NOTIFY_DONE; /* we are only interested in lec:s */
|
return NOTIFY_DONE; /* we are only interested in lec:s */
|
|
|
switch (event) {
|
switch (event) {
|
case NETDEV_REGISTER: /* a new lec device was allocated */
|
case NETDEV_REGISTER: /* a new lec device was allocated */
|
priv = (struct lec_priv *)dev->priv;
|
priv = (struct lec_priv *)dev->priv;
|
if (priv->lane_version < 2)
|
if (priv->lane_version < 2)
|
break;
|
break;
|
priv->lane2_ops->associate_indicator = lane2_assoc_ind;
|
priv->lane2_ops->associate_indicator = lane2_assoc_ind;
|
mpc = find_mpc_by_itfnum(priv->itfnum);
|
mpc = find_mpc_by_itfnum(priv->itfnum);
|
if (mpc == NULL) {
|
if (mpc == NULL) {
|
dprintk("mpoa: mpoa_event_listener: allocating new mpc for %s\n",
|
dprintk("mpoa: mpoa_event_listener: allocating new mpc for %s\n",
|
dev->name);
|
dev->name);
|
mpc = alloc_mpc();
|
mpc = alloc_mpc();
|
if (mpc == NULL) {
|
if (mpc == NULL) {
|
printk("mpoa: mpoa_event_listener: no new mpc");
|
printk("mpoa: mpoa_event_listener: no new mpc");
|
break;
|
break;
|
}
|
}
|
}
|
}
|
mpc->dev_num = priv->itfnum;
|
mpc->dev_num = priv->itfnum;
|
mpc->dev = dev;
|
mpc->dev = dev;
|
dev_hold(dev);
|
dev_hold(dev);
|
dprintk("mpoa: (%s) was initialized\n", dev->name);
|
dprintk("mpoa: (%s) was initialized\n", dev->name);
|
break;
|
break;
|
case NETDEV_UNREGISTER:
|
case NETDEV_UNREGISTER:
|
/* the lec device was deallocated */
|
/* the lec device was deallocated */
|
mpc = find_mpc_by_lec(dev);
|
mpc = find_mpc_by_lec(dev);
|
if (mpc == NULL)
|
if (mpc == NULL)
|
break;
|
break;
|
dprintk("mpoa: device (%s) was deallocated\n", dev->name);
|
dprintk("mpoa: device (%s) was deallocated\n", dev->name);
|
stop_mpc(mpc);
|
stop_mpc(mpc);
|
dev_put(mpc->dev);
|
dev_put(mpc->dev);
|
mpc->dev = NULL;
|
mpc->dev = NULL;
|
break;
|
break;
|
case NETDEV_UP:
|
case NETDEV_UP:
|
/* the dev was ifconfig'ed up */
|
/* the dev was ifconfig'ed up */
|
mpc = find_mpc_by_lec(dev);
|
mpc = find_mpc_by_lec(dev);
|
if (mpc == NULL)
|
if (mpc == NULL)
|
break;
|
break;
|
if (mpc->mpoad_vcc != NULL) {
|
if (mpc->mpoad_vcc != NULL) {
|
start_mpc(mpc, dev);
|
start_mpc(mpc, dev);
|
}
|
}
|
break;
|
break;
|
case NETDEV_DOWN:
|
case NETDEV_DOWN:
|
/* the dev was ifconfig'ed down */
|
/* the dev was ifconfig'ed down */
|
/* this means that the flow of packets from the
|
/* this means that the flow of packets from the
|
* upper layer stops
|
* upper layer stops
|
*/
|
*/
|
mpc = find_mpc_by_lec(dev);
|
mpc = find_mpc_by_lec(dev);
|
if (mpc == NULL)
|
if (mpc == NULL)
|
break;
|
break;
|
if (mpc->mpoad_vcc != NULL) {
|
if (mpc->mpoad_vcc != NULL) {
|
stop_mpc(mpc);
|
stop_mpc(mpc);
|
}
|
}
|
break;
|
break;
|
case NETDEV_REBOOT:
|
case NETDEV_REBOOT:
|
case NETDEV_CHANGE:
|
case NETDEV_CHANGE:
|
case NETDEV_CHANGEMTU:
|
case NETDEV_CHANGEMTU:
|
case NETDEV_CHANGEADDR:
|
case NETDEV_CHANGEADDR:
|
case NETDEV_GOING_DOWN:
|
case NETDEV_GOING_DOWN:
|
break;
|
break;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
return NOTIFY_DONE;
|
return NOTIFY_DONE;
|
}
|
}
|
|
|
/*
|
/*
|
* Functions which are called after a message is received from mpcd.
|
* Functions which are called after a message is received from mpcd.
|
* Msg is reused on purpose.
|
* Msg is reused on purpose.
|
*/
|
*/
|
|
|
|
|
static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc)
|
static void MPOA_trigger_rcvd(struct k_message *msg, struct mpoa_client *mpc)
|
{
|
{
|
uint32_t dst_ip = msg->content.in_info.in_dst_ip;
|
uint32_t dst_ip = msg->content.in_info.in_dst_ip;
|
in_cache_entry *entry;
|
in_cache_entry *entry;
|
|
|
entry = mpc->in_ops->get(dst_ip, mpc);
|
entry = mpc->in_ops->get(dst_ip, mpc);
|
if(entry == NULL){
|
if(entry == NULL){
|
entry = mpc->in_ops->add_entry(dst_ip, mpc);
|
entry = mpc->in_ops->add_entry(dst_ip, mpc);
|
entry->entry_state = INGRESS_RESOLVING;
|
entry->entry_state = INGRESS_RESOLVING;
|
msg->type = SND_MPOA_RES_RQST;
|
msg->type = SND_MPOA_RES_RQST;
|
msg->content.in_info = entry->ctrl_info;
|
msg->content.in_info = entry->ctrl_info;
|
msg_to_mpoad(msg, mpc);
|
msg_to_mpoad(msg, mpc);
|
do_gettimeofday(&(entry->reply_wait));
|
do_gettimeofday(&(entry->reply_wait));
|
mpc->in_ops->put(entry);
|
mpc->in_ops->put(entry);
|
return;
|
return;
|
}
|
}
|
|
|
if(entry->entry_state == INGRESS_INVALID){
|
if(entry->entry_state == INGRESS_INVALID){
|
entry->entry_state = INGRESS_RESOLVING;
|
entry->entry_state = INGRESS_RESOLVING;
|
msg->type = SND_MPOA_RES_RQST;
|
msg->type = SND_MPOA_RES_RQST;
|
msg->content.in_info = entry->ctrl_info;
|
msg->content.in_info = entry->ctrl_info;
|
msg_to_mpoad(msg, mpc);
|
msg_to_mpoad(msg, mpc);
|
do_gettimeofday(&(entry->reply_wait));
|
do_gettimeofday(&(entry->reply_wait));
|
mpc->in_ops->put(entry);
|
mpc->in_ops->put(entry);
|
return;
|
return;
|
}
|
}
|
|
|
printk("mpoa: (%s) MPOA_trigger_rcvd: entry already in resolving state\n",
|
printk("mpoa: (%s) MPOA_trigger_rcvd: entry already in resolving state\n",
|
(mpc->dev) ? mpc->dev->name : "<unknown>");
|
(mpc->dev) ? mpc->dev->name : "<unknown>");
|
mpc->in_ops->put(entry);
|
mpc->in_ops->put(entry);
|
return;
|
return;
|
}
|
}
|
|
|
/*
|
/*
|
* Things get complicated because we have to check if there's an egress
|
* Things get complicated because we have to check if there's an egress
|
* shortcut with suitable traffic parameters we could use.
|
* shortcut with suitable traffic parameters we could use.
|
*/
|
*/
|
static void check_qos_and_open_shortcut(struct k_message *msg, struct mpoa_client *client, in_cache_entry *entry)
|
static void check_qos_and_open_shortcut(struct k_message *msg, struct mpoa_client *client, in_cache_entry *entry)
|
{
|
{
|
uint32_t dst_ip = msg->content.in_info.in_dst_ip;
|
uint32_t dst_ip = msg->content.in_info.in_dst_ip;
|
unsigned char *ip __attribute__ ((unused)) = (unsigned char *)&dst_ip;
|
unsigned char *ip __attribute__ ((unused)) = (unsigned char *)&dst_ip;
|
struct atm_mpoa_qos *qos = atm_mpoa_search_qos(dst_ip);
|
struct atm_mpoa_qos *qos = atm_mpoa_search_qos(dst_ip);
|
eg_cache_entry *eg_entry = client->eg_ops->get_by_src_ip(dst_ip, client);
|
eg_cache_entry *eg_entry = client->eg_ops->get_by_src_ip(dst_ip, client);
|
|
|
if(eg_entry && eg_entry->shortcut){
|
if(eg_entry && eg_entry->shortcut){
|
if(eg_entry->shortcut->qos.txtp.traffic_class &
|
if(eg_entry->shortcut->qos.txtp.traffic_class &
|
msg->qos.txtp.traffic_class &
|
msg->qos.txtp.traffic_class &
|
(qos ? qos->qos.txtp.traffic_class : ATM_UBR | ATM_CBR)){
|
(qos ? qos->qos.txtp.traffic_class : ATM_UBR | ATM_CBR)){
|
if(eg_entry->shortcut->qos.txtp.traffic_class == ATM_UBR)
|
if(eg_entry->shortcut->qos.txtp.traffic_class == ATM_UBR)
|
entry->shortcut = eg_entry->shortcut;
|
entry->shortcut = eg_entry->shortcut;
|
else if(eg_entry->shortcut->qos.txtp.max_pcr > 0)
|
else if(eg_entry->shortcut->qos.txtp.max_pcr > 0)
|
entry->shortcut = eg_entry->shortcut;
|
entry->shortcut = eg_entry->shortcut;
|
}
|
}
|
if(entry->shortcut){
|
if(entry->shortcut){
|
dprintk("mpoa: (%s) using egress SVC to reach %u.%u.%u.%u\n",client->dev->name, NIPQUAD(ip));
|
dprintk("mpoa: (%s) using egress SVC to reach %u.%u.%u.%u\n",client->dev->name, NIPQUAD(ip));
|
client->eg_ops->put(eg_entry);
|
client->eg_ops->put(eg_entry);
|
return;
|
return;
|
}
|
}
|
}
|
}
|
if (eg_entry != NULL)
|
if (eg_entry != NULL)
|
client->eg_ops->put(eg_entry);
|
client->eg_ops->put(eg_entry);
|
|
|
/* No luck in the egress cache we must open an ingress SVC */
|
/* No luck in the egress cache we must open an ingress SVC */
|
msg->type = OPEN_INGRESS_SVC;
|
msg->type = OPEN_INGRESS_SVC;
|
if (qos && (qos->qos.txtp.traffic_class == msg->qos.txtp.traffic_class))
|
if (qos && (qos->qos.txtp.traffic_class == msg->qos.txtp.traffic_class))
|
{
|
{
|
msg->qos = qos->qos;
|
msg->qos = qos->qos;
|
printk("mpoa: (%s) trying to get a CBR shortcut\n",client->dev->name);
|
printk("mpoa: (%s) trying to get a CBR shortcut\n",client->dev->name);
|
}
|
}
|
else memset(&msg->qos,0,sizeof(struct atm_qos));
|
else memset(&msg->qos,0,sizeof(struct atm_qos));
|
msg_to_mpoad(msg, client);
|
msg_to_mpoad(msg, client);
|
return;
|
return;
|
}
|
}
|
|
|
static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc)
|
static void MPOA_res_reply_rcvd(struct k_message *msg, struct mpoa_client *mpc)
|
{
|
{
|
unsigned char *ip;
|
unsigned char *ip;
|
|
|
uint32_t dst_ip = msg->content.in_info.in_dst_ip;
|
uint32_t dst_ip = msg->content.in_info.in_dst_ip;
|
in_cache_entry *entry = mpc->in_ops->get(dst_ip, mpc);
|
in_cache_entry *entry = mpc->in_ops->get(dst_ip, mpc);
|
ip = (unsigned char *)&dst_ip;
|
ip = (unsigned char *)&dst_ip;
|
dprintk("mpoa: (%s) MPOA_res_reply_rcvd: ip %u.%u.%u.%u\n", mpc->dev->name, NIPQUAD(ip));
|
dprintk("mpoa: (%s) MPOA_res_reply_rcvd: ip %u.%u.%u.%u\n", mpc->dev->name, NIPQUAD(ip));
|
ddprintk("mpoa: (%s) MPOA_res_reply_rcvd() entry = %p", mpc->dev->name, entry);
|
ddprintk("mpoa: (%s) MPOA_res_reply_rcvd() entry = %p", mpc->dev->name, entry);
|
if(entry == NULL){
|
if(entry == NULL){
|
printk("\nmpoa: (%s) ARGH, received res. reply for an entry that doesn't exist.\n", mpc->dev->name);
|
printk("\nmpoa: (%s) ARGH, received res. reply for an entry that doesn't exist.\n", mpc->dev->name);
|
return;
|
return;
|
}
|
}
|
ddprintk(" entry_state = %d ", entry->entry_state);
|
ddprintk(" entry_state = %d ", entry->entry_state);
|
|
|
if (entry->entry_state == INGRESS_RESOLVED) {
|
if (entry->entry_state == INGRESS_RESOLVED) {
|
printk("\nmpoa: (%s) MPOA_res_reply_rcvd for RESOLVED entry!\n", mpc->dev->name);
|
printk("\nmpoa: (%s) MPOA_res_reply_rcvd for RESOLVED entry!\n", mpc->dev->name);
|
mpc->in_ops->put(entry);
|
mpc->in_ops->put(entry);
|
return;
|
return;
|
}
|
}
|
|
|
entry->ctrl_info = msg->content.in_info;
|
entry->ctrl_info = msg->content.in_info;
|
do_gettimeofday(&(entry->tv));
|
do_gettimeofday(&(entry->tv));
|
do_gettimeofday(&(entry->reply_wait)); /* Used in refreshing func from now on */
|
do_gettimeofday(&(entry->reply_wait)); /* Used in refreshing func from now on */
|
entry->refresh_time = 0;
|
entry->refresh_time = 0;
|
ddprintk("entry->shortcut = %p\n", entry->shortcut);
|
ddprintk("entry->shortcut = %p\n", entry->shortcut);
|
|
|
if(entry->entry_state == INGRESS_RESOLVING && entry->shortcut != NULL){
|
if(entry->entry_state == INGRESS_RESOLVING && entry->shortcut != NULL){
|
entry->entry_state = INGRESS_RESOLVED;
|
entry->entry_state = INGRESS_RESOLVED;
|
mpc->in_ops->put(entry);
|
mpc->in_ops->put(entry);
|
return; /* Shortcut already open... */
|
return; /* Shortcut already open... */
|
}
|
}
|
|
|
if (entry->shortcut != NULL) {
|
if (entry->shortcut != NULL) {
|
printk("mpoa: (%s) MPOA_res_reply_rcvd: entry->shortcut != NULL, impossible!\n",
|
printk("mpoa: (%s) MPOA_res_reply_rcvd: entry->shortcut != NULL, impossible!\n",
|
mpc->dev->name);
|
mpc->dev->name);
|
mpc->in_ops->put(entry);
|
mpc->in_ops->put(entry);
|
return;
|
return;
|
}
|
}
|
|
|
check_qos_and_open_shortcut(msg, mpc, entry);
|
check_qos_and_open_shortcut(msg, mpc, entry);
|
entry->entry_state = INGRESS_RESOLVED;
|
entry->entry_state = INGRESS_RESOLVED;
|
mpc->in_ops->put(entry);
|
mpc->in_ops->put(entry);
|
|
|
return;
|
return;
|
|
|
}
|
}
|
|
|
static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc)
|
static void ingress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc)
|
{
|
{
|
uint32_t dst_ip = msg->content.in_info.in_dst_ip;
|
uint32_t dst_ip = msg->content.in_info.in_dst_ip;
|
uint32_t mask = msg->ip_mask;
|
uint32_t mask = msg->ip_mask;
|
unsigned char *ip = (unsigned char *)&dst_ip;
|
unsigned char *ip = (unsigned char *)&dst_ip;
|
in_cache_entry *entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask);
|
in_cache_entry *entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask);
|
|
|
if(entry == NULL){
|
if(entry == NULL){
|
printk("mpoa: (%s) ingress_purge_rcvd: purge for a non-existing entry, ", mpc->dev->name);
|
printk("mpoa: (%s) ingress_purge_rcvd: purge for a non-existing entry, ", mpc->dev->name);
|
printk("ip = %u.%u.%u.%u\n", ip[0], ip[1], ip[2], ip[3]);
|
printk("ip = %u.%u.%u.%u\n", ip[0], ip[1], ip[2], ip[3]);
|
return;
|
return;
|
}
|
}
|
|
|
do {
|
do {
|
dprintk("mpoa: (%s) ingress_purge_rcvd: removing an ingress entry, ip = %u.%u.%u.%u\n" ,
|
dprintk("mpoa: (%s) ingress_purge_rcvd: removing an ingress entry, ip = %u.%u.%u.%u\n" ,
|
mpc->dev->name, ip[0], ip[1], ip[2], ip[3]);
|
mpc->dev->name, ip[0], ip[1], ip[2], ip[3]);
|
write_lock_bh(&mpc->ingress_lock);
|
write_lock_bh(&mpc->ingress_lock);
|
mpc->in_ops->remove_entry(entry, mpc);
|
mpc->in_ops->remove_entry(entry, mpc);
|
write_unlock_bh(&mpc->ingress_lock);
|
write_unlock_bh(&mpc->ingress_lock);
|
mpc->in_ops->put(entry);
|
mpc->in_ops->put(entry);
|
entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask);
|
entry = mpc->in_ops->get_with_mask(dst_ip, mpc, mask);
|
} while (entry != NULL);
|
} while (entry != NULL);
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc)
|
static void egress_purge_rcvd(struct k_message *msg, struct mpoa_client *mpc)
|
{
|
{
|
uint32_t cache_id = msg->content.eg_info.cache_id;
|
uint32_t cache_id = msg->content.eg_info.cache_id;
|
eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(cache_id, mpc);
|
eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(cache_id, mpc);
|
|
|
if (entry == NULL) {
|
if (entry == NULL) {
|
dprintk("mpoa: (%s) egress_purge_rcvd: purge for a non-existing entry\n", mpc->dev->name);
|
dprintk("mpoa: (%s) egress_purge_rcvd: purge for a non-existing entry\n", mpc->dev->name);
|
return;
|
return;
|
}
|
}
|
|
|
write_lock_irq(&mpc->egress_lock);
|
write_lock_irq(&mpc->egress_lock);
|
mpc->eg_ops->remove_entry(entry, mpc);
|
mpc->eg_ops->remove_entry(entry, mpc);
|
write_unlock_irq(&mpc->egress_lock);
|
write_unlock_irq(&mpc->egress_lock);
|
|
|
mpc->eg_ops->put(entry);
|
mpc->eg_ops->put(entry);
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry)
|
static void purge_egress_shortcut(struct atm_vcc *vcc, eg_cache_entry *entry)
|
{
|
{
|
struct k_message *purge_msg;
|
struct k_message *purge_msg;
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
|
|
dprintk("mpoa: purge_egress_shortcut: entering\n");
|
dprintk("mpoa: purge_egress_shortcut: entering\n");
|
if (vcc == NULL) {
|
if (vcc == NULL) {
|
printk("mpoa: purge_egress_shortcut: vcc == NULL\n");
|
printk("mpoa: purge_egress_shortcut: vcc == NULL\n");
|
return;
|
return;
|
}
|
}
|
|
|
skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC);
|
skb = alloc_skb(sizeof(struct k_message), GFP_ATOMIC);
|
if (skb == NULL) {
|
if (skb == NULL) {
|
printk("mpoa: purge_egress_shortcut: out of memory\n");
|
printk("mpoa: purge_egress_shortcut: out of memory\n");
|
return;
|
return;
|
}
|
}
|
|
|
skb_put(skb, sizeof(struct k_message));
|
skb_put(skb, sizeof(struct k_message));
|
memset(skb->data, 0, sizeof(struct k_message));
|
memset(skb->data, 0, sizeof(struct k_message));
|
purge_msg = (struct k_message *)skb->data;
|
purge_msg = (struct k_message *)skb->data;
|
purge_msg->type = DATA_PLANE_PURGE;
|
purge_msg->type = DATA_PLANE_PURGE;
|
if (entry != NULL)
|
if (entry != NULL)
|
purge_msg->content.eg_info = entry->ctrl_info;
|
purge_msg->content.eg_info = entry->ctrl_info;
|
|
|
atm_force_charge(vcc, skb->truesize);
|
atm_force_charge(vcc, skb->truesize);
|
skb_queue_tail(&vcc->sk->receive_queue, skb);
|
skb_queue_tail(&vcc->sk->receive_queue, skb);
|
wake_up(&vcc->sleep);
|
wake_up(&vcc->sleep);
|
dprintk("mpoa: purge_egress_shortcut: exiting:\n");
|
dprintk("mpoa: purge_egress_shortcut: exiting:\n");
|
|
|
return;
|
return;
|
}
|
}
|
|
|
/*
|
/*
|
* Our MPS died. Tell our daemon to send NHRP data plane purge to each
|
* Our MPS died. Tell our daemon to send NHRP data plane purge to each
|
* of the egress shortcuts we have.
|
* of the egress shortcuts we have.
|
*/
|
*/
|
static void mps_death( struct k_message * msg, struct mpoa_client * mpc )
|
static void mps_death( struct k_message * msg, struct mpoa_client * mpc )
|
{
|
{
|
eg_cache_entry *entry;
|
eg_cache_entry *entry;
|
|
|
dprintk("mpoa: (%s) mps_death:\n", mpc->dev->name);
|
dprintk("mpoa: (%s) mps_death:\n", mpc->dev->name);
|
|
|
if(memcmp(msg->MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN)){
|
if(memcmp(msg->MPS_ctrl, mpc->mps_ctrl_addr, ATM_ESA_LEN)){
|
printk("mpoa: (%s) mps_death: wrong MPS\n", mpc->dev->name);
|
printk("mpoa: (%s) mps_death: wrong MPS\n", mpc->dev->name);
|
return;
|
return;
|
}
|
}
|
|
|
/* FIXME: This knows too much of the cache structure */
|
/* FIXME: This knows too much of the cache structure */
|
read_lock_irq(&mpc->egress_lock);
|
read_lock_irq(&mpc->egress_lock);
|
entry = mpc->eg_cache;
|
entry = mpc->eg_cache;
|
while (entry != NULL) {
|
while (entry != NULL) {
|
purge_egress_shortcut(entry->shortcut, entry);
|
purge_egress_shortcut(entry->shortcut, entry);
|
entry = entry->next;
|
entry = entry->next;
|
}
|
}
|
read_unlock_irq(&mpc->egress_lock);
|
read_unlock_irq(&mpc->egress_lock);
|
|
|
mpc->in_ops->destroy_cache(mpc);
|
mpc->in_ops->destroy_cache(mpc);
|
mpc->eg_ops->destroy_cache(mpc);
|
mpc->eg_ops->destroy_cache(mpc);
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static void MPOA_cache_impos_rcvd( struct k_message * msg, struct mpoa_client * mpc)
|
static void MPOA_cache_impos_rcvd( struct k_message * msg, struct mpoa_client * mpc)
|
{
|
{
|
uint16_t holding_time;
|
uint16_t holding_time;
|
eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(msg->content.eg_info.cache_id, mpc);
|
eg_cache_entry *entry = mpc->eg_ops->get_by_cache_id(msg->content.eg_info.cache_id, mpc);
|
|
|
holding_time = msg->content.eg_info.holding_time;
|
holding_time = msg->content.eg_info.holding_time;
|
dprintk("mpoa: (%s) MPOA_cache_impos_rcvd: entry = %p, holding_time = %u\n",
|
dprintk("mpoa: (%s) MPOA_cache_impos_rcvd: entry = %p, holding_time = %u\n",
|
mpc->dev->name, entry, holding_time);
|
mpc->dev->name, entry, holding_time);
|
if(entry == NULL && holding_time) {
|
if(entry == NULL && holding_time) {
|
entry = mpc->eg_ops->add_entry(msg, mpc);
|
entry = mpc->eg_ops->add_entry(msg, mpc);
|
mpc->eg_ops->put(entry);
|
mpc->eg_ops->put(entry);
|
return;
|
return;
|
}
|
}
|
if(holding_time){
|
if(holding_time){
|
mpc->eg_ops->update(entry, holding_time);
|
mpc->eg_ops->update(entry, holding_time);
|
return;
|
return;
|
}
|
}
|
|
|
write_lock_irq(&mpc->egress_lock);
|
write_lock_irq(&mpc->egress_lock);
|
mpc->eg_ops->remove_entry(entry, mpc);
|
mpc->eg_ops->remove_entry(entry, mpc);
|
write_unlock_irq(&mpc->egress_lock);
|
write_unlock_irq(&mpc->egress_lock);
|
|
|
mpc->eg_ops->put(entry);
|
mpc->eg_ops->put(entry);
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc)
|
static void set_mpc_ctrl_addr_rcvd(struct k_message *mesg, struct mpoa_client *mpc)
|
{
|
{
|
struct lec_priv *priv;
|
struct lec_priv *priv;
|
int i, retval ;
|
int i, retval ;
|
|
|
uint8_t tlv[4 + 1 + 1 + 1 + ATM_ESA_LEN];
|
uint8_t tlv[4 + 1 + 1 + 1 + ATM_ESA_LEN];
|
|
|
tlv[0] = 00; tlv[1] = 0xa0; tlv[2] = 0x3e; tlv[3] = 0x2a; /* type */
|
tlv[0] = 00; tlv[1] = 0xa0; tlv[2] = 0x3e; tlv[3] = 0x2a; /* type */
|
tlv[4] = 1 + 1 + ATM_ESA_LEN; /* length */
|
tlv[4] = 1 + 1 + ATM_ESA_LEN; /* length */
|
tlv[5] = 0x02; /* MPOA client */
|
tlv[5] = 0x02; /* MPOA client */
|
tlv[6] = 0x00; /* number of MPS MAC addresses */
|
tlv[6] = 0x00; /* number of MPS MAC addresses */
|
|
|
memcpy(&tlv[7], mesg->MPS_ctrl, ATM_ESA_LEN); /* MPC ctrl ATM addr */
|
memcpy(&tlv[7], mesg->MPS_ctrl, ATM_ESA_LEN); /* MPC ctrl ATM addr */
|
memcpy(mpc->our_ctrl_addr, mesg->MPS_ctrl, ATM_ESA_LEN);
|
memcpy(mpc->our_ctrl_addr, mesg->MPS_ctrl, ATM_ESA_LEN);
|
|
|
dprintk("mpoa: (%s) setting MPC ctrl ATM address to ",
|
dprintk("mpoa: (%s) setting MPC ctrl ATM address to ",
|
(mpc->dev) ? mpc->dev->name : "<unknown>");
|
(mpc->dev) ? mpc->dev->name : "<unknown>");
|
for (i = 7; i < sizeof(tlv); i++)
|
for (i = 7; i < sizeof(tlv); i++)
|
dprintk("%02x ", tlv[i]);
|
dprintk("%02x ", tlv[i]);
|
dprintk("\n");
|
dprintk("\n");
|
|
|
if (mpc->dev) {
|
if (mpc->dev) {
|
priv = (struct lec_priv *)mpc->dev->priv;
|
priv = (struct lec_priv *)mpc->dev->priv;
|
retval = priv->lane2_ops->associate_req(mpc->dev, mpc->dev->dev_addr, tlv, sizeof(tlv));
|
retval = priv->lane2_ops->associate_req(mpc->dev, mpc->dev->dev_addr, tlv, sizeof(tlv));
|
if (retval == 0)
|
if (retval == 0)
|
printk("mpoa: (%s) MPOA device type TLV association failed\n", mpc->dev->name);
|
printk("mpoa: (%s) MPOA device type TLV association failed\n", mpc->dev->name);
|
retval = priv->lane2_ops->resolve(mpc->dev, NULL, 1, NULL, NULL);
|
retval = priv->lane2_ops->resolve(mpc->dev, NULL, 1, NULL, NULL);
|
if (retval < 0)
|
if (retval < 0)
|
printk("mpoa: (%s) targetless LE_ARP request failed\n", mpc->dev->name);
|
printk("mpoa: (%s) targetless LE_ARP request failed\n", mpc->dev->name);
|
}
|
}
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static void set_mps_mac_addr_rcvd(struct k_message *msg, struct mpoa_client *client)
|
static void set_mps_mac_addr_rcvd(struct k_message *msg, struct mpoa_client *client)
|
{
|
{
|
|
|
if(client->number_of_mps_macs)
|
if(client->number_of_mps_macs)
|
kfree(client->mps_macs);
|
kfree(client->mps_macs);
|
client->number_of_mps_macs = 0;
|
client->number_of_mps_macs = 0;
|
client->mps_macs = kmalloc(ETH_ALEN,GFP_KERNEL);
|
client->mps_macs = kmalloc(ETH_ALEN,GFP_KERNEL);
|
if (client->mps_macs == NULL) {
|
if (client->mps_macs == NULL) {
|
printk("mpoa: set_mps_mac_addr_rcvd: out of memory\n");
|
printk("mpoa: set_mps_mac_addr_rcvd: out of memory\n");
|
return;
|
return;
|
}
|
}
|
client->number_of_mps_macs = 1;
|
client->number_of_mps_macs = 1;
|
memcpy(client->mps_macs, msg->MPS_ctrl, ETH_ALEN);
|
memcpy(client->mps_macs, msg->MPS_ctrl, ETH_ALEN);
|
|
|
return;
|
return;
|
}
|
}
|
|
|
/*
|
/*
|
* purge egress cache and tell daemon to 'action' (DIE, RELOAD)
|
* purge egress cache and tell daemon to 'action' (DIE, RELOAD)
|
*/
|
*/
|
static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action)
|
static void clean_up(struct k_message *msg, struct mpoa_client *mpc, int action)
|
{
|
{
|
|
|
eg_cache_entry *entry;
|
eg_cache_entry *entry;
|
msg->type = SND_EGRESS_PURGE;
|
msg->type = SND_EGRESS_PURGE;
|
|
|
|
|
/* FIXME: This knows too much of the cache structure */
|
/* FIXME: This knows too much of the cache structure */
|
read_lock_irq(&mpc->egress_lock);
|
read_lock_irq(&mpc->egress_lock);
|
entry = mpc->eg_cache;
|
entry = mpc->eg_cache;
|
while (entry != NULL){
|
while (entry != NULL){
|
msg->content.eg_info = entry->ctrl_info;
|
msg->content.eg_info = entry->ctrl_info;
|
dprintk("mpoa: cache_id %u\n", entry->ctrl_info.cache_id);
|
dprintk("mpoa: cache_id %u\n", entry->ctrl_info.cache_id);
|
msg_to_mpoad(msg, mpc);
|
msg_to_mpoad(msg, mpc);
|
entry = entry->next;
|
entry = entry->next;
|
}
|
}
|
read_unlock_irq(&mpc->egress_lock);
|
read_unlock_irq(&mpc->egress_lock);
|
|
|
msg->type = action;
|
msg->type = action;
|
msg_to_mpoad(msg, mpc);
|
msg_to_mpoad(msg, mpc);
|
return;
|
return;
|
}
|
}
|
|
|
static void mpc_timer_refresh()
|
static void mpc_timer_refresh()
|
{
|
{
|
mpc_timer.expires = jiffies + (MPC_P2 * HZ);
|
mpc_timer.expires = jiffies + (MPC_P2 * HZ);
|
mpc_timer.data = mpc_timer.expires;
|
mpc_timer.data = mpc_timer.expires;
|
mpc_timer.function = mpc_cache_check;
|
mpc_timer.function = mpc_cache_check;
|
add_timer(&mpc_timer);
|
add_timer(&mpc_timer);
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static void mpc_cache_check( unsigned long checking_time )
|
static void mpc_cache_check( unsigned long checking_time )
|
{
|
{
|
struct mpoa_client *mpc = mpcs;
|
struct mpoa_client *mpc = mpcs;
|
static unsigned long previous_resolving_check_time = 0;
|
static unsigned long previous_resolving_check_time = 0;
|
static unsigned long previous_refresh_time = 0;
|
static unsigned long previous_refresh_time = 0;
|
|
|
while( mpc != NULL ){
|
while( mpc != NULL ){
|
mpc->in_ops->clear_count(mpc);
|
mpc->in_ops->clear_count(mpc);
|
mpc->eg_ops->clear_expired(mpc);
|
mpc->eg_ops->clear_expired(mpc);
|
if(checking_time - previous_resolving_check_time > mpc->parameters.mpc_p4 * HZ ){
|
if(checking_time - previous_resolving_check_time > mpc->parameters.mpc_p4 * HZ ){
|
mpc->in_ops->check_resolving(mpc);
|
mpc->in_ops->check_resolving(mpc);
|
previous_resolving_check_time = checking_time;
|
previous_resolving_check_time = checking_time;
|
}
|
}
|
if(checking_time - previous_refresh_time > mpc->parameters.mpc_p5 * HZ ){
|
if(checking_time - previous_refresh_time > mpc->parameters.mpc_p5 * HZ ){
|
mpc->in_ops->refresh(mpc);
|
mpc->in_ops->refresh(mpc);
|
previous_refresh_time = checking_time;
|
previous_refresh_time = checking_time;
|
}
|
}
|
mpc = mpc->next;
|
mpc = mpc->next;
|
}
|
}
|
mpc_timer_refresh();
|
mpc_timer_refresh();
|
|
|
return;
|
return;
|
}
|
}
|
|
|
static struct atm_mpoa_ops __atm_mpoa_ops = {
|
static struct atm_mpoa_ops __atm_mpoa_ops = {
|
.mpoad_attach = atm_mpoa_mpoad_attach,
|
.mpoad_attach = atm_mpoa_mpoad_attach,
|
.vcc_attach = atm_mpoa_vcc_attach,
|
.vcc_attach = atm_mpoa_vcc_attach,
|
.owner = THIS_MODULE
|
.owner = THIS_MODULE
|
};
|
};
|
|
|
static __init int atm_mpoa_init(void)
|
static __init int atm_mpoa_init(void)
|
{
|
{
|
atm_mpoa_ops_set(&__atm_mpoa_ops);
|
atm_mpoa_ops_set(&__atm_mpoa_ops);
|
|
|
#ifdef CONFIG_PROC_FS
|
#ifdef CONFIG_PROC_FS
|
if (mpc_proc_init() != 0)
|
if (mpc_proc_init() != 0)
|
printk(KERN_INFO "mpoa: failed to initialize /proc/mpoa\n");
|
printk(KERN_INFO "mpoa: failed to initialize /proc/mpoa\n");
|
else
|
else
|
printk(KERN_INFO "mpoa: /proc/mpoa initialized\n");
|
printk(KERN_INFO "mpoa: /proc/mpoa initialized\n");
|
#endif
|
#endif
|
|
|
printk("mpc.c: " __DATE__ " " __TIME__ " initialized\n");
|
printk("mpc.c: " __DATE__ " " __TIME__ " initialized\n");
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
void __exit atm_mpoa_cleanup(void)
|
void __exit atm_mpoa_cleanup(void)
|
{
|
{
|
struct mpoa_client *mpc, *tmp;
|
struct mpoa_client *mpc, *tmp;
|
struct atm_mpoa_qos *qos, *nextqos;
|
struct atm_mpoa_qos *qos, *nextqos;
|
struct lec_priv *priv;
|
struct lec_priv *priv;
|
|
|
if (MOD_IN_USE) {
|
if (MOD_IN_USE) {
|
printk("mpc.c: module in use\n");
|
printk("mpc.c: module in use\n");
|
return;
|
return;
|
}
|
}
|
#ifdef CONFIG_PROC_FS
|
#ifdef CONFIG_PROC_FS
|
mpc_proc_clean();
|
mpc_proc_clean();
|
#endif
|
#endif
|
|
|
del_timer(&mpc_timer);
|
del_timer(&mpc_timer);
|
unregister_netdevice_notifier(&mpoa_notifier);
|
unregister_netdevice_notifier(&mpoa_notifier);
|
atm_mpoa_ops_set(NULL);
|
atm_mpoa_ops_set(NULL);
|
|
|
mpc = mpcs;
|
mpc = mpcs;
|
mpcs = NULL;
|
mpcs = NULL;
|
while (mpc != NULL) {
|
while (mpc != NULL) {
|
tmp = mpc->next;
|
tmp = mpc->next;
|
if (mpc->dev != NULL) {
|
if (mpc->dev != NULL) {
|
stop_mpc(mpc);
|
stop_mpc(mpc);
|
priv = (struct lec_priv *)mpc->dev->priv;
|
priv = (struct lec_priv *)mpc->dev->priv;
|
if (priv->lane2_ops != NULL)
|
if (priv->lane2_ops != NULL)
|
priv->lane2_ops->associate_indicator = NULL;
|
priv->lane2_ops->associate_indicator = NULL;
|
}
|
}
|
ddprintk("mpoa: cleanup_module: about to clear caches\n");
|
ddprintk("mpoa: cleanup_module: about to clear caches\n");
|
mpc->in_ops->destroy_cache(mpc);
|
mpc->in_ops->destroy_cache(mpc);
|
mpc->eg_ops->destroy_cache(mpc);
|
mpc->eg_ops->destroy_cache(mpc);
|
ddprintk("mpoa: cleanup_module: caches cleared\n");
|
ddprintk("mpoa: cleanup_module: caches cleared\n");
|
kfree(mpc->mps_macs);
|
kfree(mpc->mps_macs);
|
memset(mpc, 0, sizeof(struct mpoa_client));
|
memset(mpc, 0, sizeof(struct mpoa_client));
|
ddprintk("mpoa: cleanup_module: about to kfree %p\n", mpc);
|
ddprintk("mpoa: cleanup_module: about to kfree %p\n", mpc);
|
kfree(mpc);
|
kfree(mpc);
|
ddprintk("mpoa: cleanup_module: next mpc is at %p\n", tmp);
|
ddprintk("mpoa: cleanup_module: next mpc is at %p\n", tmp);
|
mpc = tmp;
|
mpc = tmp;
|
}
|
}
|
|
|
qos = qos_head;
|
qos = qos_head;
|
qos_head = NULL;
|
qos_head = NULL;
|
while (qos != NULL) {
|
while (qos != NULL) {
|
nextqos = qos->next;
|
nextqos = qos->next;
|
dprintk("mpoa: cleanup_module: freeing qos entry %p\n", qos);
|
dprintk("mpoa: cleanup_module: freeing qos entry %p\n", qos);
|
kfree(qos);
|
kfree(qos);
|
qos = nextqos;
|
qos = nextqos;
|
}
|
}
|
|
|
return;
|
return;
|
}
|
}
|
|
|
module_init(atm_mpoa_init);
|
module_init(atm_mpoa_init);
|
module_exit(atm_mpoa_cleanup);
|
module_exit(atm_mpoa_cleanup);
|
|
|
MODULE_LICENSE("GPL");
|
MODULE_LICENSE("GPL");
|
|
|
