1 |
3 |
xianfeng |
/*
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2 |
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* lec.c: Lan Emulation driver
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3 |
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*
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* Marko Kiiskila <mkiiskila@yahoo.com>
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*/
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#include <linux/kernel.h>
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#include <linux/bitops.h>
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#include <linux/capability.h>
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/* We are ethernet device */
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#include <linux/if_ether.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <net/sock.h>
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#include <linux/skbuff.h>
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#include <linux/ip.h>
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#include <asm/byteorder.h>
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#include <asm/uaccess.h>
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#include <net/arp.h>
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#include <net/dst.h>
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#include <linux/proc_fs.h>
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#include <linux/spinlock.h>
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#include <linux/seq_file.h>
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/* TokenRing if needed */
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#ifdef CONFIG_TR
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#include <linux/trdevice.h>
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#endif
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/* And atm device */
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#include <linux/atmdev.h>
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#include <linux/atmlec.h>
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/* Proxy LEC knows about bridging */
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#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
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#include <linux/if_bridge.h>
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#include "../bridge/br_private.h"
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static unsigned char bridge_ula_lec[] = { 0x01, 0x80, 0xc2, 0x00, 0x00 };
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#endif
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/* Modular too */
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#include <linux/module.h>
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#include <linux/init.h>
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#include "lec.h"
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#include "lec_arpc.h"
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#include "resources.h"
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#define DUMP_PACKETS 0 /*
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* 0 = None,
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* 1 = 30 first bytes
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* 2 = Whole packet
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*/
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#define LEC_UNRES_QUE_LEN 8 /*
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* number of tx packets to queue for a
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* single destination while waiting for SVC
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*/
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static int lec_open(struct net_device *dev);
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static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev);
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static int lec_close(struct net_device *dev);
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static struct net_device_stats *lec_get_stats(struct net_device *dev);
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static void lec_init(struct net_device *dev);
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static struct lec_arp_table *lec_arp_find(struct lec_priv *priv,
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unsigned char *mac_addr);
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static int lec_arp_remove(struct lec_priv *priv,
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struct lec_arp_table *to_remove);
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/* LANE2 functions */
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static void lane2_associate_ind(struct net_device *dev, u8 *mac_address,
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u8 *tlvs, u32 sizeoftlvs);
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static int lane2_resolve(struct net_device *dev, u8 *dst_mac, int force,
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u8 **tlvs, u32 *sizeoftlvs);
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static int lane2_associate_req(struct net_device *dev, u8 *lan_dst,
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u8 *tlvs, u32 sizeoftlvs);
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static int lec_addr_delete(struct lec_priv *priv, unsigned char *atm_addr,
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unsigned long permanent);
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static void lec_arp_check_empties(struct lec_priv *priv,
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struct atm_vcc *vcc, struct sk_buff *skb);
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static void lec_arp_destroy(struct lec_priv *priv);
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static void lec_arp_init(struct lec_priv *priv);
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static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv,
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unsigned char *mac_to_find,
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int is_rdesc,
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struct lec_arp_table **ret_entry);
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static void lec_arp_update(struct lec_priv *priv, unsigned char *mac_addr,
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unsigned char *atm_addr, unsigned long remoteflag,
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unsigned int targetless_le_arp);
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static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id);
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static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc);
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static void lec_set_flush_tran_id(struct lec_priv *priv,
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unsigned char *atm_addr,
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unsigned long tran_id);
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static void lec_vcc_added(struct lec_priv *priv, struct atmlec_ioc *ioc_data,
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struct atm_vcc *vcc,
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void (*old_push) (struct atm_vcc *vcc,
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struct sk_buff *skb));
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static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc);
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/* must be done under lec_arp_lock */
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static inline void lec_arp_hold(struct lec_arp_table *entry)
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{
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atomic_inc(&entry->usage);
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}
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static inline void lec_arp_put(struct lec_arp_table *entry)
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{
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if (atomic_dec_and_test(&entry->usage))
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kfree(entry);
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}
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static struct lane2_ops lane2_ops = {
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lane2_resolve, /* resolve, spec 3.1.3 */
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lane2_associate_req, /* associate_req, spec 3.1.4 */
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NULL /* associate indicator, spec 3.1.5 */
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};
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static unsigned char bus_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
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/* Device structures */
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static struct net_device *dev_lec[MAX_LEC_ITF];
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#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
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static void lec_handle_bridge(struct sk_buff *skb, struct net_device *dev)
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{
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struct ethhdr *eth;
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char *buff;
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struct lec_priv *priv;
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/*
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* Check if this is a BPDU. If so, ask zeppelin to send
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* LE_TOPOLOGY_REQUEST with the same value of Topology Change bit
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* as the Config BPDU has
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*/
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eth = (struct ethhdr *)skb->data;
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buff = skb->data + skb->dev->hard_header_len;
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if (*buff++ == 0x42 && *buff++ == 0x42 && *buff++ == 0x03) {
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struct sock *sk;
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struct sk_buff *skb2;
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struct atmlec_msg *mesg;
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skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
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if (skb2 == NULL)
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return;
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skb2->len = sizeof(struct atmlec_msg);
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mesg = (struct atmlec_msg *)skb2->data;
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mesg->type = l_topology_change;
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buff += 4;
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mesg->content.normal.flag = *buff & 0x01; /* 0x01 is topology change */
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priv = (struct lec_priv *)dev->priv;
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atm_force_charge(priv->lecd, skb2->truesize);
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sk = sk_atm(priv->lecd);
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skb_queue_tail(&sk->sk_receive_queue, skb2);
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sk->sk_data_ready(sk, skb2->len);
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}
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return;
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}
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#endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */
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/*
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* Modelled after tr_type_trans
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* All multicast and ARE or STE frames go to BUS.
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* Non source routed frames go by destination address.
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* Last hop source routed frames go by destination address.
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* Not last hop source routed frames go by _next_ route descriptor.
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* Returns pointer to destination MAC address or fills in rdesc
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* and returns NULL.
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*/
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#ifdef CONFIG_TR
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static unsigned char *get_tr_dst(unsigned char *packet, unsigned char *rdesc)
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{
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struct trh_hdr *trh;
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int riflen, num_rdsc;
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trh = (struct trh_hdr *)packet;
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if (trh->daddr[0] & (uint8_t) 0x80)
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return bus_mac; /* multicast */
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if (trh->saddr[0] & TR_RII) {
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riflen = (ntohs(trh->rcf) & TR_RCF_LEN_MASK) >> 8;
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if ((ntohs(trh->rcf) >> 13) != 0)
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return bus_mac; /* ARE or STE */
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} else
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return trh->daddr; /* not source routed */
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if (riflen < 6)
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return trh->daddr; /* last hop, source routed */
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/* riflen is 6 or more, packet has more than one route descriptor */
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num_rdsc = (riflen / 2) - 1;
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memset(rdesc, 0, ETH_ALEN);
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/* offset 4 comes from LAN destination field in LE control frames */
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if (trh->rcf & htons((uint16_t) TR_RCF_DIR_BIT))
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memcpy(&rdesc[4], &trh->rseg[num_rdsc - 2], sizeof(__be16));
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else {
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memcpy(&rdesc[4], &trh->rseg[1], sizeof(__be16));
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rdesc[5] = ((ntohs(trh->rseg[0]) & 0x000f) | (rdesc[5] & 0xf0));
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}
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return NULL;
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}
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#endif /* CONFIG_TR */
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/*
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* Open/initialize the netdevice. This is called (in the current kernel)
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* sometime after booting when the 'ifconfig' program is run.
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*
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* This routine should set everything up anew at each open, even
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* registers that "should" only need to be set once at boot, so that
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* there is non-reboot way to recover if something goes wrong.
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*/
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static int lec_open(struct net_device *dev)
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{
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struct lec_priv *priv = (struct lec_priv *)dev->priv;
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netif_start_queue(dev);
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memset(&priv->stats, 0, sizeof(struct net_device_stats));
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return 0;
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}
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static __inline__ void
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lec_send(struct atm_vcc *vcc, struct sk_buff *skb, struct lec_priv *priv)
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{
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ATM_SKB(skb)->vcc = vcc;
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ATM_SKB(skb)->atm_options = vcc->atm_options;
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atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
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if (vcc->send(vcc, skb) < 0) {
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priv->stats.tx_dropped++;
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return;
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}
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priv->stats.tx_packets++;
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priv->stats.tx_bytes += skb->len;
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}
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static void lec_tx_timeout(struct net_device *dev)
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{
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printk(KERN_INFO "%s: tx timeout\n", dev->name);
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dev->trans_start = jiffies;
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netif_wake_queue(dev);
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}
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static int lec_start_xmit(struct sk_buff *skb, struct net_device *dev)
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{
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struct sk_buff *skb2;
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struct lec_priv *priv = (struct lec_priv *)dev->priv;
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struct lecdatahdr_8023 *lec_h;
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struct atm_vcc *vcc;
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struct lec_arp_table *entry;
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unsigned char *dst;
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260 |
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int min_frame_size;
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261 |
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#ifdef CONFIG_TR
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unsigned char rdesc[ETH_ALEN]; /* Token Ring route descriptor */
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#endif
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264 |
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int is_rdesc;
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265 |
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#if DUMP_PACKETS > 0
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266 |
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char buf[300];
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267 |
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int i = 0;
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268 |
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#endif /* DUMP_PACKETS >0 */
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DECLARE_MAC_BUF(mac);
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270 |
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pr_debug("lec_start_xmit called\n");
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272 |
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if (!priv->lecd) {
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printk("%s:No lecd attached\n", dev->name);
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274 |
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priv->stats.tx_errors++;
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netif_stop_queue(dev);
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276 |
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return -EUNATCH;
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277 |
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}
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278 |
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279 |
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pr_debug("skbuff head:%lx data:%lx tail:%lx end:%lx\n",
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(long)skb->head, (long)skb->data, (long)skb_tail_pointer(skb),
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(long)skb_end_pointer(skb));
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282 |
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#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
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if (memcmp(skb->data, bridge_ula_lec, sizeof(bridge_ula_lec)) == 0)
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284 |
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lec_handle_bridge(skb, dev);
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285 |
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#endif
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286 |
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|
287 |
|
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/* Make sure we have room for lec_id */
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288 |
|
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if (skb_headroom(skb) < 2) {
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289 |
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|
290 |
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pr_debug("lec_start_xmit: reallocating skb\n");
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291 |
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skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN);
|
292 |
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kfree_skb(skb);
|
293 |
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if (skb2 == NULL)
|
294 |
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return 0;
|
295 |
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skb = skb2;
|
296 |
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}
|
297 |
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skb_push(skb, 2);
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298 |
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|
299 |
|
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/* Put le header to place, works for TokenRing too */
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300 |
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lec_h = (struct lecdatahdr_8023 *)skb->data;
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301 |
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lec_h->le_header = htons(priv->lecid);
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302 |
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|
303 |
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#ifdef CONFIG_TR
|
304 |
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/*
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305 |
|
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* Ugly. Use this to realign Token Ring packets for
|
306 |
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* e.g. PCA-200E driver.
|
307 |
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*/
|
308 |
|
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if (priv->is_trdev) {
|
309 |
|
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skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN);
|
310 |
|
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kfree_skb(skb);
|
311 |
|
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if (skb2 == NULL)
|
312 |
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return 0;
|
313 |
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skb = skb2;
|
314 |
|
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}
|
315 |
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#endif
|
316 |
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|
317 |
|
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#if DUMP_PACKETS > 0
|
318 |
|
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printk("%s: send datalen:%ld lecid:%4.4x\n", dev->name,
|
319 |
|
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skb->len, priv->lecid);
|
320 |
|
|
#if DUMP_PACKETS >= 2
|
321 |
|
|
for (i = 0; i < skb->len && i < 99; i++) {
|
322 |
|
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sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]);
|
323 |
|
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}
|
324 |
|
|
#elif DUMP_PACKETS >= 1
|
325 |
|
|
for (i = 0; i < skb->len && i < 30; i++) {
|
326 |
|
|
sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]);
|
327 |
|
|
}
|
328 |
|
|
#endif /* DUMP_PACKETS >= 1 */
|
329 |
|
|
if (i == skb->len)
|
330 |
|
|
printk("%s\n", buf);
|
331 |
|
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else
|
332 |
|
|
printk("%s...\n", buf);
|
333 |
|
|
#endif /* DUMP_PACKETS > 0 */
|
334 |
|
|
|
335 |
|
|
/* Minimum ethernet-frame size */
|
336 |
|
|
#ifdef CONFIG_TR
|
337 |
|
|
if (priv->is_trdev)
|
338 |
|
|
min_frame_size = LEC_MINIMUM_8025_SIZE;
|
339 |
|
|
else
|
340 |
|
|
#endif
|
341 |
|
|
min_frame_size = LEC_MINIMUM_8023_SIZE;
|
342 |
|
|
if (skb->len < min_frame_size) {
|
343 |
|
|
if ((skb->len + skb_tailroom(skb)) < min_frame_size) {
|
344 |
|
|
skb2 = skb_copy_expand(skb, 0,
|
345 |
|
|
min_frame_size - skb->truesize,
|
346 |
|
|
GFP_ATOMIC);
|
347 |
|
|
dev_kfree_skb(skb);
|
348 |
|
|
if (skb2 == NULL) {
|
349 |
|
|
priv->stats.tx_dropped++;
|
350 |
|
|
return 0;
|
351 |
|
|
}
|
352 |
|
|
skb = skb2;
|
353 |
|
|
}
|
354 |
|
|
skb_put(skb, min_frame_size - skb->len);
|
355 |
|
|
}
|
356 |
|
|
|
357 |
|
|
/* Send to right vcc */
|
358 |
|
|
is_rdesc = 0;
|
359 |
|
|
dst = lec_h->h_dest;
|
360 |
|
|
#ifdef CONFIG_TR
|
361 |
|
|
if (priv->is_trdev) {
|
362 |
|
|
dst = get_tr_dst(skb->data + 2, rdesc);
|
363 |
|
|
if (dst == NULL) {
|
364 |
|
|
dst = rdesc;
|
365 |
|
|
is_rdesc = 1;
|
366 |
|
|
}
|
367 |
|
|
}
|
368 |
|
|
#endif
|
369 |
|
|
entry = NULL;
|
370 |
|
|
vcc = lec_arp_resolve(priv, dst, is_rdesc, &entry);
|
371 |
|
|
pr_debug("%s:vcc:%p vcc_flags:%lx, entry:%p\n", dev->name,
|
372 |
|
|
vcc, vcc ? vcc->flags : 0, entry);
|
373 |
|
|
if (!vcc || !test_bit(ATM_VF_READY, &vcc->flags)) {
|
374 |
|
|
if (entry && (entry->tx_wait.qlen < LEC_UNRES_QUE_LEN)) {
|
375 |
|
|
pr_debug("%s:lec_start_xmit: queuing packet, ",
|
376 |
|
|
dev->name);
|
377 |
|
|
pr_debug("MAC address %s\n",
|
378 |
|
|
print_mac(mac, lec_h->h_dest));
|
379 |
|
|
skb_queue_tail(&entry->tx_wait, skb);
|
380 |
|
|
} else {
|
381 |
|
|
pr_debug
|
382 |
|
|
("%s:lec_start_xmit: tx queue full or no arp entry, dropping, ",
|
383 |
|
|
dev->name);
|
384 |
|
|
pr_debug("MAC address %s\n",
|
385 |
|
|
print_mac(mac, lec_h->h_dest));
|
386 |
|
|
priv->stats.tx_dropped++;
|
387 |
|
|
dev_kfree_skb(skb);
|
388 |
|
|
}
|
389 |
|
|
goto out;
|
390 |
|
|
}
|
391 |
|
|
#if DUMP_PACKETS > 0
|
392 |
|
|
printk("%s:sending to vpi:%d vci:%d\n", dev->name, vcc->vpi, vcc->vci);
|
393 |
|
|
#endif /* DUMP_PACKETS > 0 */
|
394 |
|
|
|
395 |
|
|
while (entry && (skb2 = skb_dequeue(&entry->tx_wait))) {
|
396 |
|
|
pr_debug("lec.c: emptying tx queue, ");
|
397 |
|
|
pr_debug("MAC address %s\n",
|
398 |
|
|
print_mac(mac, lec_h->h_dest));
|
399 |
|
|
lec_send(vcc, skb2, priv);
|
400 |
|
|
}
|
401 |
|
|
|
402 |
|
|
lec_send(vcc, skb, priv);
|
403 |
|
|
|
404 |
|
|
if (!atm_may_send(vcc, 0)) {
|
405 |
|
|
struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
|
406 |
|
|
|
407 |
|
|
vpriv->xoff = 1;
|
408 |
|
|
netif_stop_queue(dev);
|
409 |
|
|
|
410 |
|
|
/*
|
411 |
|
|
* vcc->pop() might have occurred in between, making
|
412 |
|
|
* the vcc usuable again. Since xmit is serialized,
|
413 |
|
|
* this is the only situation we have to re-test.
|
414 |
|
|
*/
|
415 |
|
|
|
416 |
|
|
if (atm_may_send(vcc, 0))
|
417 |
|
|
netif_wake_queue(dev);
|
418 |
|
|
}
|
419 |
|
|
|
420 |
|
|
out:
|
421 |
|
|
if (entry)
|
422 |
|
|
lec_arp_put(entry);
|
423 |
|
|
dev->trans_start = jiffies;
|
424 |
|
|
return 0;
|
425 |
|
|
}
|
426 |
|
|
|
427 |
|
|
/* The inverse routine to net_open(). */
|
428 |
|
|
static int lec_close(struct net_device *dev)
|
429 |
|
|
{
|
430 |
|
|
netif_stop_queue(dev);
|
431 |
|
|
return 0;
|
432 |
|
|
}
|
433 |
|
|
|
434 |
|
|
/*
|
435 |
|
|
* Get the current statistics.
|
436 |
|
|
* This may be called with the card open or closed.
|
437 |
|
|
*/
|
438 |
|
|
static struct net_device_stats *lec_get_stats(struct net_device *dev)
|
439 |
|
|
{
|
440 |
|
|
return &((struct lec_priv *)dev->priv)->stats;
|
441 |
|
|
}
|
442 |
|
|
|
443 |
|
|
static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
|
444 |
|
|
{
|
445 |
|
|
unsigned long flags;
|
446 |
|
|
struct net_device *dev = (struct net_device *)vcc->proto_data;
|
447 |
|
|
struct lec_priv *priv = (struct lec_priv *)dev->priv;
|
448 |
|
|
struct atmlec_msg *mesg;
|
449 |
|
|
struct lec_arp_table *entry;
|
450 |
|
|
int i;
|
451 |
|
|
char *tmp; /* FIXME */
|
452 |
|
|
DECLARE_MAC_BUF(mac);
|
453 |
|
|
|
454 |
|
|
atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
|
455 |
|
|
mesg = (struct atmlec_msg *)skb->data;
|
456 |
|
|
tmp = skb->data;
|
457 |
|
|
tmp += sizeof(struct atmlec_msg);
|
458 |
|
|
pr_debug("%s: msg from zeppelin:%d\n", dev->name, mesg->type);
|
459 |
|
|
switch (mesg->type) {
|
460 |
|
|
case l_set_mac_addr:
|
461 |
|
|
for (i = 0; i < 6; i++) {
|
462 |
|
|
dev->dev_addr[i] = mesg->content.normal.mac_addr[i];
|
463 |
|
|
}
|
464 |
|
|
break;
|
465 |
|
|
case l_del_mac_addr:
|
466 |
|
|
for (i = 0; i < 6; i++) {
|
467 |
|
|
dev->dev_addr[i] = 0;
|
468 |
|
|
}
|
469 |
|
|
break;
|
470 |
|
|
case l_addr_delete:
|
471 |
|
|
lec_addr_delete(priv, mesg->content.normal.atm_addr,
|
472 |
|
|
mesg->content.normal.flag);
|
473 |
|
|
break;
|
474 |
|
|
case l_topology_change:
|
475 |
|
|
priv->topology_change = mesg->content.normal.flag;
|
476 |
|
|
break;
|
477 |
|
|
case l_flush_complete:
|
478 |
|
|
lec_flush_complete(priv, mesg->content.normal.flag);
|
479 |
|
|
break;
|
480 |
|
|
case l_narp_req: /* LANE2: see 7.1.35 in the lane2 spec */
|
481 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
482 |
|
|
entry = lec_arp_find(priv, mesg->content.normal.mac_addr);
|
483 |
|
|
lec_arp_remove(priv, entry);
|
484 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
485 |
|
|
|
486 |
|
|
if (mesg->content.normal.no_source_le_narp)
|
487 |
|
|
break;
|
488 |
|
|
/* FALL THROUGH */
|
489 |
|
|
case l_arp_update:
|
490 |
|
|
lec_arp_update(priv, mesg->content.normal.mac_addr,
|
491 |
|
|
mesg->content.normal.atm_addr,
|
492 |
|
|
mesg->content.normal.flag,
|
493 |
|
|
mesg->content.normal.targetless_le_arp);
|
494 |
|
|
pr_debug("lec: in l_arp_update\n");
|
495 |
|
|
if (mesg->sizeoftlvs != 0) { /* LANE2 3.1.5 */
|
496 |
|
|
pr_debug("lec: LANE2 3.1.5, got tlvs, size %d\n",
|
497 |
|
|
mesg->sizeoftlvs);
|
498 |
|
|
lane2_associate_ind(dev, mesg->content.normal.mac_addr,
|
499 |
|
|
tmp, mesg->sizeoftlvs);
|
500 |
|
|
}
|
501 |
|
|
break;
|
502 |
|
|
case l_config:
|
503 |
|
|
priv->maximum_unknown_frame_count =
|
504 |
|
|
mesg->content.config.maximum_unknown_frame_count;
|
505 |
|
|
priv->max_unknown_frame_time =
|
506 |
|
|
(mesg->content.config.max_unknown_frame_time * HZ);
|
507 |
|
|
priv->max_retry_count = mesg->content.config.max_retry_count;
|
508 |
|
|
priv->aging_time = (mesg->content.config.aging_time * HZ);
|
509 |
|
|
priv->forward_delay_time =
|
510 |
|
|
(mesg->content.config.forward_delay_time * HZ);
|
511 |
|
|
priv->arp_response_time =
|
512 |
|
|
(mesg->content.config.arp_response_time * HZ);
|
513 |
|
|
priv->flush_timeout = (mesg->content.config.flush_timeout * HZ);
|
514 |
|
|
priv->path_switching_delay =
|
515 |
|
|
(mesg->content.config.path_switching_delay * HZ);
|
516 |
|
|
priv->lane_version = mesg->content.config.lane_version; /* LANE2 */
|
517 |
|
|
priv->lane2_ops = NULL;
|
518 |
|
|
if (priv->lane_version > 1)
|
519 |
|
|
priv->lane2_ops = &lane2_ops;
|
520 |
|
|
if (dev->change_mtu(dev, mesg->content.config.mtu))
|
521 |
|
|
printk("%s: change_mtu to %d failed\n", dev->name,
|
522 |
|
|
mesg->content.config.mtu);
|
523 |
|
|
priv->is_proxy = mesg->content.config.is_proxy;
|
524 |
|
|
break;
|
525 |
|
|
case l_flush_tran_id:
|
526 |
|
|
lec_set_flush_tran_id(priv, mesg->content.normal.atm_addr,
|
527 |
|
|
mesg->content.normal.flag);
|
528 |
|
|
break;
|
529 |
|
|
case l_set_lecid:
|
530 |
|
|
priv->lecid =
|
531 |
|
|
(unsigned short)(0xffff & mesg->content.normal.flag);
|
532 |
|
|
break;
|
533 |
|
|
case l_should_bridge:
|
534 |
|
|
#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
|
535 |
|
|
{
|
536 |
|
|
struct net_bridge_fdb_entry *f;
|
537 |
|
|
|
538 |
|
|
pr_debug
|
539 |
|
|
("%s: bridge zeppelin asks about %s\n",
|
540 |
|
|
dev->name,
|
541 |
|
|
print_mac(mac, mesg->content.proxy.mac_addr));
|
542 |
|
|
|
543 |
|
|
if (br_fdb_get_hook == NULL || dev->br_port == NULL)
|
544 |
|
|
break;
|
545 |
|
|
|
546 |
|
|
f = br_fdb_get_hook(dev->br_port->br,
|
547 |
|
|
mesg->content.proxy.mac_addr);
|
548 |
|
|
if (f != NULL && f->dst->dev != dev
|
549 |
|
|
&& f->dst->state == BR_STATE_FORWARDING) {
|
550 |
|
|
/* hit from bridge table, send LE_ARP_RESPONSE */
|
551 |
|
|
struct sk_buff *skb2;
|
552 |
|
|
struct sock *sk;
|
553 |
|
|
|
554 |
|
|
pr_debug
|
555 |
|
|
("%s: entry found, responding to zeppelin\n",
|
556 |
|
|
dev->name);
|
557 |
|
|
skb2 =
|
558 |
|
|
alloc_skb(sizeof(struct atmlec_msg),
|
559 |
|
|
GFP_ATOMIC);
|
560 |
|
|
if (skb2 == NULL) {
|
561 |
|
|
br_fdb_put_hook(f);
|
562 |
|
|
break;
|
563 |
|
|
}
|
564 |
|
|
skb2->len = sizeof(struct atmlec_msg);
|
565 |
|
|
skb_copy_to_linear_data(skb2, mesg,
|
566 |
|
|
sizeof(*mesg));
|
567 |
|
|
atm_force_charge(priv->lecd, skb2->truesize);
|
568 |
|
|
sk = sk_atm(priv->lecd);
|
569 |
|
|
skb_queue_tail(&sk->sk_receive_queue, skb2);
|
570 |
|
|
sk->sk_data_ready(sk, skb2->len);
|
571 |
|
|
}
|
572 |
|
|
if (f != NULL)
|
573 |
|
|
br_fdb_put_hook(f);
|
574 |
|
|
}
|
575 |
|
|
#endif /* defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) */
|
576 |
|
|
break;
|
577 |
|
|
default:
|
578 |
|
|
printk("%s: Unknown message type %d\n", dev->name, mesg->type);
|
579 |
|
|
dev_kfree_skb(skb);
|
580 |
|
|
return -EINVAL;
|
581 |
|
|
}
|
582 |
|
|
dev_kfree_skb(skb);
|
583 |
|
|
return 0;
|
584 |
|
|
}
|
585 |
|
|
|
586 |
|
|
static void lec_atm_close(struct atm_vcc *vcc)
|
587 |
|
|
{
|
588 |
|
|
struct sk_buff *skb;
|
589 |
|
|
struct net_device *dev = (struct net_device *)vcc->proto_data;
|
590 |
|
|
struct lec_priv *priv = (struct lec_priv *)dev->priv;
|
591 |
|
|
|
592 |
|
|
priv->lecd = NULL;
|
593 |
|
|
/* Do something needful? */
|
594 |
|
|
|
595 |
|
|
netif_stop_queue(dev);
|
596 |
|
|
lec_arp_destroy(priv);
|
597 |
|
|
|
598 |
|
|
if (skb_peek(&sk_atm(vcc)->sk_receive_queue))
|
599 |
|
|
printk("%s lec_atm_close: closing with messages pending\n",
|
600 |
|
|
dev->name);
|
601 |
|
|
while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue)) != NULL) {
|
602 |
|
|
atm_return(vcc, skb->truesize);
|
603 |
|
|
dev_kfree_skb(skb);
|
604 |
|
|
}
|
605 |
|
|
|
606 |
|
|
printk("%s: Shut down!\n", dev->name);
|
607 |
|
|
module_put(THIS_MODULE);
|
608 |
|
|
}
|
609 |
|
|
|
610 |
|
|
static struct atmdev_ops lecdev_ops = {
|
611 |
|
|
.close = lec_atm_close,
|
612 |
|
|
.send = lec_atm_send
|
613 |
|
|
};
|
614 |
|
|
|
615 |
|
|
static struct atm_dev lecatm_dev = {
|
616 |
|
|
.ops = &lecdev_ops,
|
617 |
|
|
.type = "lec",
|
618 |
|
|
.number = 999, /* dummy device number */
|
619 |
|
|
.lock = __SPIN_LOCK_UNLOCKED(lecatm_dev.lock)
|
620 |
|
|
};
|
621 |
|
|
|
622 |
|
|
/*
|
623 |
|
|
* LANE2: new argument struct sk_buff *data contains
|
624 |
|
|
* the LE_ARP based TLVs introduced in the LANE2 spec
|
625 |
|
|
*/
|
626 |
|
|
static int
|
627 |
|
|
send_to_lecd(struct lec_priv *priv, atmlec_msg_type type,
|
628 |
|
|
unsigned char *mac_addr, unsigned char *atm_addr,
|
629 |
|
|
struct sk_buff *data)
|
630 |
|
|
{
|
631 |
|
|
struct sock *sk;
|
632 |
|
|
struct sk_buff *skb;
|
633 |
|
|
struct atmlec_msg *mesg;
|
634 |
|
|
|
635 |
|
|
if (!priv || !priv->lecd) {
|
636 |
|
|
return -1;
|
637 |
|
|
}
|
638 |
|
|
skb = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
|
639 |
|
|
if (!skb)
|
640 |
|
|
return -1;
|
641 |
|
|
skb->len = sizeof(struct atmlec_msg);
|
642 |
|
|
mesg = (struct atmlec_msg *)skb->data;
|
643 |
|
|
memset(mesg, 0, sizeof(struct atmlec_msg));
|
644 |
|
|
mesg->type = type;
|
645 |
|
|
if (data != NULL)
|
646 |
|
|
mesg->sizeoftlvs = data->len;
|
647 |
|
|
if (mac_addr)
|
648 |
|
|
memcpy(&mesg->content.normal.mac_addr, mac_addr, ETH_ALEN);
|
649 |
|
|
else
|
650 |
|
|
mesg->content.normal.targetless_le_arp = 1;
|
651 |
|
|
if (atm_addr)
|
652 |
|
|
memcpy(&mesg->content.normal.atm_addr, atm_addr, ATM_ESA_LEN);
|
653 |
|
|
|
654 |
|
|
atm_force_charge(priv->lecd, skb->truesize);
|
655 |
|
|
sk = sk_atm(priv->lecd);
|
656 |
|
|
skb_queue_tail(&sk->sk_receive_queue, skb);
|
657 |
|
|
sk->sk_data_ready(sk, skb->len);
|
658 |
|
|
|
659 |
|
|
if (data != NULL) {
|
660 |
|
|
pr_debug("lec: about to send %d bytes of data\n", data->len);
|
661 |
|
|
atm_force_charge(priv->lecd, data->truesize);
|
662 |
|
|
skb_queue_tail(&sk->sk_receive_queue, data);
|
663 |
|
|
sk->sk_data_ready(sk, skb->len);
|
664 |
|
|
}
|
665 |
|
|
|
666 |
|
|
return 0;
|
667 |
|
|
}
|
668 |
|
|
|
669 |
|
|
/* shamelessly stolen from drivers/net/net_init.c */
|
670 |
|
|
static int lec_change_mtu(struct net_device *dev, int new_mtu)
|
671 |
|
|
{
|
672 |
|
|
if ((new_mtu < 68) || (new_mtu > 18190))
|
673 |
|
|
return -EINVAL;
|
674 |
|
|
dev->mtu = new_mtu;
|
675 |
|
|
return 0;
|
676 |
|
|
}
|
677 |
|
|
|
678 |
|
|
static void lec_set_multicast_list(struct net_device *dev)
|
679 |
|
|
{
|
680 |
|
|
/*
|
681 |
|
|
* by default, all multicast frames arrive over the bus.
|
682 |
|
|
* eventually support selective multicast service
|
683 |
|
|
*/
|
684 |
|
|
return;
|
685 |
|
|
}
|
686 |
|
|
|
687 |
|
|
static void lec_init(struct net_device *dev)
|
688 |
|
|
{
|
689 |
|
|
dev->change_mtu = lec_change_mtu;
|
690 |
|
|
dev->open = lec_open;
|
691 |
|
|
dev->stop = lec_close;
|
692 |
|
|
dev->hard_start_xmit = lec_start_xmit;
|
693 |
|
|
dev->tx_timeout = lec_tx_timeout;
|
694 |
|
|
|
695 |
|
|
dev->get_stats = lec_get_stats;
|
696 |
|
|
dev->set_multicast_list = lec_set_multicast_list;
|
697 |
|
|
dev->do_ioctl = NULL;
|
698 |
|
|
printk("%s: Initialized!\n", dev->name);
|
699 |
|
|
return;
|
700 |
|
|
}
|
701 |
|
|
|
702 |
|
|
static unsigned char lec_ctrl_magic[] = {
|
703 |
|
|
0xff,
|
704 |
|
|
0x00,
|
705 |
|
|
0x01,
|
706 |
|
|
0x01
|
707 |
|
|
};
|
708 |
|
|
|
709 |
|
|
#define LEC_DATA_DIRECT_8023 2
|
710 |
|
|
#define LEC_DATA_DIRECT_8025 3
|
711 |
|
|
|
712 |
|
|
static int lec_is_data_direct(struct atm_vcc *vcc)
|
713 |
|
|
{
|
714 |
|
|
return ((vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8023) ||
|
715 |
|
|
(vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8025));
|
716 |
|
|
}
|
717 |
|
|
|
718 |
|
|
static void lec_push(struct atm_vcc *vcc, struct sk_buff *skb)
|
719 |
|
|
{
|
720 |
|
|
unsigned long flags;
|
721 |
|
|
struct net_device *dev = (struct net_device *)vcc->proto_data;
|
722 |
|
|
struct lec_priv *priv = (struct lec_priv *)dev->priv;
|
723 |
|
|
|
724 |
|
|
#if DUMP_PACKETS >0
|
725 |
|
|
int i = 0;
|
726 |
|
|
char buf[300];
|
727 |
|
|
|
728 |
|
|
printk("%s: lec_push vcc vpi:%d vci:%d\n", dev->name,
|
729 |
|
|
vcc->vpi, vcc->vci);
|
730 |
|
|
#endif
|
731 |
|
|
if (!skb) {
|
732 |
|
|
pr_debug("%s: null skb\n", dev->name);
|
733 |
|
|
lec_vcc_close(priv, vcc);
|
734 |
|
|
return;
|
735 |
|
|
}
|
736 |
|
|
#if DUMP_PACKETS > 0
|
737 |
|
|
printk("%s: rcv datalen:%ld lecid:%4.4x\n", dev->name,
|
738 |
|
|
skb->len, priv->lecid);
|
739 |
|
|
#if DUMP_PACKETS >= 2
|
740 |
|
|
for (i = 0; i < skb->len && i < 99; i++) {
|
741 |
|
|
sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]);
|
742 |
|
|
}
|
743 |
|
|
#elif DUMP_PACKETS >= 1
|
744 |
|
|
for (i = 0; i < skb->len && i < 30; i++) {
|
745 |
|
|
sprintf(buf + i * 3, "%2.2x ", 0xff & skb->data[i]);
|
746 |
|
|
}
|
747 |
|
|
#endif /* DUMP_PACKETS >= 1 */
|
748 |
|
|
if (i == skb->len)
|
749 |
|
|
printk("%s\n", buf);
|
750 |
|
|
else
|
751 |
|
|
printk("%s...\n", buf);
|
752 |
|
|
#endif /* DUMP_PACKETS > 0 */
|
753 |
|
|
if (memcmp(skb->data, lec_ctrl_magic, 4) == 0) { /* Control frame, to daemon */
|
754 |
|
|
struct sock *sk = sk_atm(vcc);
|
755 |
|
|
|
756 |
|
|
pr_debug("%s: To daemon\n", dev->name);
|
757 |
|
|
skb_queue_tail(&sk->sk_receive_queue, skb);
|
758 |
|
|
sk->sk_data_ready(sk, skb->len);
|
759 |
|
|
} else { /* Data frame, queue to protocol handlers */
|
760 |
|
|
struct lec_arp_table *entry;
|
761 |
|
|
unsigned char *src, *dst;
|
762 |
|
|
|
763 |
|
|
atm_return(vcc, skb->truesize);
|
764 |
|
|
if (*(__be16 *) skb->data == htons(priv->lecid) ||
|
765 |
|
|
!priv->lecd || !(dev->flags & IFF_UP)) {
|
766 |
|
|
/*
|
767 |
|
|
* Probably looping back, or if lecd is missing,
|
768 |
|
|
* lecd has gone down
|
769 |
|
|
*/
|
770 |
|
|
pr_debug("Ignoring frame...\n");
|
771 |
|
|
dev_kfree_skb(skb);
|
772 |
|
|
return;
|
773 |
|
|
}
|
774 |
|
|
#ifdef CONFIG_TR
|
775 |
|
|
if (priv->is_trdev)
|
776 |
|
|
dst = ((struct lecdatahdr_8025 *)skb->data)->h_dest;
|
777 |
|
|
else
|
778 |
|
|
#endif
|
779 |
|
|
dst = ((struct lecdatahdr_8023 *)skb->data)->h_dest;
|
780 |
|
|
|
781 |
|
|
/*
|
782 |
|
|
* If this is a Data Direct VCC, and the VCC does not match
|
783 |
|
|
* the LE_ARP cache entry, delete the LE_ARP cache entry.
|
784 |
|
|
*/
|
785 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
786 |
|
|
if (lec_is_data_direct(vcc)) {
|
787 |
|
|
#ifdef CONFIG_TR
|
788 |
|
|
if (priv->is_trdev)
|
789 |
|
|
src =
|
790 |
|
|
((struct lecdatahdr_8025 *)skb->data)->
|
791 |
|
|
h_source;
|
792 |
|
|
else
|
793 |
|
|
#endif
|
794 |
|
|
src =
|
795 |
|
|
((struct lecdatahdr_8023 *)skb->data)->
|
796 |
|
|
h_source;
|
797 |
|
|
entry = lec_arp_find(priv, src);
|
798 |
|
|
if (entry && entry->vcc != vcc) {
|
799 |
|
|
lec_arp_remove(priv, entry);
|
800 |
|
|
lec_arp_put(entry);
|
801 |
|
|
}
|
802 |
|
|
}
|
803 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
804 |
|
|
|
805 |
|
|
if (!(dst[0] & 0x01) && /* Never filter Multi/Broadcast */
|
806 |
|
|
!priv->is_proxy && /* Proxy wants all the packets */
|
807 |
|
|
memcmp(dst, dev->dev_addr, dev->addr_len)) {
|
808 |
|
|
dev_kfree_skb(skb);
|
809 |
|
|
return;
|
810 |
|
|
}
|
811 |
|
|
if (!hlist_empty(&priv->lec_arp_empty_ones)) {
|
812 |
|
|
lec_arp_check_empties(priv, vcc, skb);
|
813 |
|
|
}
|
814 |
|
|
skb_pull(skb, 2); /* skip lec_id */
|
815 |
|
|
#ifdef CONFIG_TR
|
816 |
|
|
if (priv->is_trdev)
|
817 |
|
|
skb->protocol = tr_type_trans(skb, dev);
|
818 |
|
|
else
|
819 |
|
|
#endif
|
820 |
|
|
skb->protocol = eth_type_trans(skb, dev);
|
821 |
|
|
priv->stats.rx_packets++;
|
822 |
|
|
priv->stats.rx_bytes += skb->len;
|
823 |
|
|
memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
|
824 |
|
|
netif_rx(skb);
|
825 |
|
|
}
|
826 |
|
|
}
|
827 |
|
|
|
828 |
|
|
static void lec_pop(struct atm_vcc *vcc, struct sk_buff *skb)
|
829 |
|
|
{
|
830 |
|
|
struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
|
831 |
|
|
struct net_device *dev = skb->dev;
|
832 |
|
|
|
833 |
|
|
if (vpriv == NULL) {
|
834 |
|
|
printk("lec_pop(): vpriv = NULL!?!?!?\n");
|
835 |
|
|
return;
|
836 |
|
|
}
|
837 |
|
|
|
838 |
|
|
vpriv->old_pop(vcc, skb);
|
839 |
|
|
|
840 |
|
|
if (vpriv->xoff && atm_may_send(vcc, 0)) {
|
841 |
|
|
vpriv->xoff = 0;
|
842 |
|
|
if (netif_running(dev) && netif_queue_stopped(dev))
|
843 |
|
|
netif_wake_queue(dev);
|
844 |
|
|
}
|
845 |
|
|
}
|
846 |
|
|
|
847 |
|
|
static int lec_vcc_attach(struct atm_vcc *vcc, void __user *arg)
|
848 |
|
|
{
|
849 |
|
|
struct lec_vcc_priv *vpriv;
|
850 |
|
|
int bytes_left;
|
851 |
|
|
struct atmlec_ioc ioc_data;
|
852 |
|
|
|
853 |
|
|
/* Lecd must be up in this case */
|
854 |
|
|
bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmlec_ioc));
|
855 |
|
|
if (bytes_left != 0) {
|
856 |
|
|
printk
|
857 |
|
|
("lec: lec_vcc_attach, copy from user failed for %d bytes\n",
|
858 |
|
|
bytes_left);
|
859 |
|
|
}
|
860 |
|
|
if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF ||
|
861 |
|
|
!dev_lec[ioc_data.dev_num])
|
862 |
|
|
return -EINVAL;
|
863 |
|
|
if (!(vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL)))
|
864 |
|
|
return -ENOMEM;
|
865 |
|
|
vpriv->xoff = 0;
|
866 |
|
|
vpriv->old_pop = vcc->pop;
|
867 |
|
|
vcc->user_back = vpriv;
|
868 |
|
|
vcc->pop = lec_pop;
|
869 |
|
|
lec_vcc_added(dev_lec[ioc_data.dev_num]->priv,
|
870 |
|
|
&ioc_data, vcc, vcc->push);
|
871 |
|
|
vcc->proto_data = dev_lec[ioc_data.dev_num];
|
872 |
|
|
vcc->push = lec_push;
|
873 |
|
|
return 0;
|
874 |
|
|
}
|
875 |
|
|
|
876 |
|
|
static int lec_mcast_attach(struct atm_vcc *vcc, int arg)
|
877 |
|
|
{
|
878 |
|
|
if (arg < 0 || arg >= MAX_LEC_ITF || !dev_lec[arg])
|
879 |
|
|
return -EINVAL;
|
880 |
|
|
vcc->proto_data = dev_lec[arg];
|
881 |
|
|
return (lec_mcast_make((struct lec_priv *)dev_lec[arg]->priv, vcc));
|
882 |
|
|
}
|
883 |
|
|
|
884 |
|
|
/* Initialize device. */
|
885 |
|
|
static int lecd_attach(struct atm_vcc *vcc, int arg)
|
886 |
|
|
{
|
887 |
|
|
int i;
|
888 |
|
|
struct lec_priv *priv;
|
889 |
|
|
|
890 |
|
|
if (arg < 0)
|
891 |
|
|
i = 0;
|
892 |
|
|
else
|
893 |
|
|
i = arg;
|
894 |
|
|
#ifdef CONFIG_TR
|
895 |
|
|
if (arg >= MAX_LEC_ITF)
|
896 |
|
|
return -EINVAL;
|
897 |
|
|
#else /* Reserve the top NUM_TR_DEVS for TR */
|
898 |
|
|
if (arg >= (MAX_LEC_ITF - NUM_TR_DEVS))
|
899 |
|
|
return -EINVAL;
|
900 |
|
|
#endif
|
901 |
|
|
if (!dev_lec[i]) {
|
902 |
|
|
int is_trdev, size;
|
903 |
|
|
|
904 |
|
|
is_trdev = 0;
|
905 |
|
|
if (i >= (MAX_LEC_ITF - NUM_TR_DEVS))
|
906 |
|
|
is_trdev = 1;
|
907 |
|
|
|
908 |
|
|
size = sizeof(struct lec_priv);
|
909 |
|
|
#ifdef CONFIG_TR
|
910 |
|
|
if (is_trdev)
|
911 |
|
|
dev_lec[i] = alloc_trdev(size);
|
912 |
|
|
else
|
913 |
|
|
#endif
|
914 |
|
|
dev_lec[i] = alloc_etherdev(size);
|
915 |
|
|
if (!dev_lec[i])
|
916 |
|
|
return -ENOMEM;
|
917 |
|
|
snprintf(dev_lec[i]->name, IFNAMSIZ, "lec%d", i);
|
918 |
|
|
if (register_netdev(dev_lec[i])) {
|
919 |
|
|
free_netdev(dev_lec[i]);
|
920 |
|
|
return -EINVAL;
|
921 |
|
|
}
|
922 |
|
|
|
923 |
|
|
priv = dev_lec[i]->priv;
|
924 |
|
|
priv->is_trdev = is_trdev;
|
925 |
|
|
lec_init(dev_lec[i]);
|
926 |
|
|
} else {
|
927 |
|
|
priv = dev_lec[i]->priv;
|
928 |
|
|
if (priv->lecd)
|
929 |
|
|
return -EADDRINUSE;
|
930 |
|
|
}
|
931 |
|
|
lec_arp_init(priv);
|
932 |
|
|
priv->itfnum = i; /* LANE2 addition */
|
933 |
|
|
priv->lecd = vcc;
|
934 |
|
|
vcc->dev = &lecatm_dev;
|
935 |
|
|
vcc_insert_socket(sk_atm(vcc));
|
936 |
|
|
|
937 |
|
|
vcc->proto_data = dev_lec[i];
|
938 |
|
|
set_bit(ATM_VF_META, &vcc->flags);
|
939 |
|
|
set_bit(ATM_VF_READY, &vcc->flags);
|
940 |
|
|
|
941 |
|
|
/* Set default values to these variables */
|
942 |
|
|
priv->maximum_unknown_frame_count = 1;
|
943 |
|
|
priv->max_unknown_frame_time = (1 * HZ);
|
944 |
|
|
priv->vcc_timeout_period = (1200 * HZ);
|
945 |
|
|
priv->max_retry_count = 1;
|
946 |
|
|
priv->aging_time = (300 * HZ);
|
947 |
|
|
priv->forward_delay_time = (15 * HZ);
|
948 |
|
|
priv->topology_change = 0;
|
949 |
|
|
priv->arp_response_time = (1 * HZ);
|
950 |
|
|
priv->flush_timeout = (4 * HZ);
|
951 |
|
|
priv->path_switching_delay = (6 * HZ);
|
952 |
|
|
|
953 |
|
|
if (dev_lec[i]->flags & IFF_UP) {
|
954 |
|
|
netif_start_queue(dev_lec[i]);
|
955 |
|
|
}
|
956 |
|
|
__module_get(THIS_MODULE);
|
957 |
|
|
return i;
|
958 |
|
|
}
|
959 |
|
|
|
960 |
|
|
#ifdef CONFIG_PROC_FS
|
961 |
|
|
static char *lec_arp_get_status_string(unsigned char status)
|
962 |
|
|
{
|
963 |
|
|
static char *lec_arp_status_string[] = {
|
964 |
|
|
"ESI_UNKNOWN ",
|
965 |
|
|
"ESI_ARP_PENDING ",
|
966 |
|
|
"ESI_VC_PENDING ",
|
967 |
|
|
"<Undefined> ",
|
968 |
|
|
"ESI_FLUSH_PENDING ",
|
969 |
|
|
"ESI_FORWARD_DIRECT"
|
970 |
|
|
};
|
971 |
|
|
|
972 |
|
|
if (status > ESI_FORWARD_DIRECT)
|
973 |
|
|
status = 3; /* ESI_UNDEFINED */
|
974 |
|
|
return lec_arp_status_string[status];
|
975 |
|
|
}
|
976 |
|
|
|
977 |
|
|
static void lec_info(struct seq_file *seq, struct lec_arp_table *entry)
|
978 |
|
|
{
|
979 |
|
|
int i;
|
980 |
|
|
|
981 |
|
|
for (i = 0; i < ETH_ALEN; i++)
|
982 |
|
|
seq_printf(seq, "%2.2x", entry->mac_addr[i] & 0xff);
|
983 |
|
|
seq_printf(seq, " ");
|
984 |
|
|
for (i = 0; i < ATM_ESA_LEN; i++)
|
985 |
|
|
seq_printf(seq, "%2.2x", entry->atm_addr[i] & 0xff);
|
986 |
|
|
seq_printf(seq, " %s %4.4x", lec_arp_get_status_string(entry->status),
|
987 |
|
|
entry->flags & 0xffff);
|
988 |
|
|
if (entry->vcc)
|
989 |
|
|
seq_printf(seq, "%3d %3d ", entry->vcc->vpi, entry->vcc->vci);
|
990 |
|
|
else
|
991 |
|
|
seq_printf(seq, " ");
|
992 |
|
|
if (entry->recv_vcc) {
|
993 |
|
|
seq_printf(seq, " %3d %3d", entry->recv_vcc->vpi,
|
994 |
|
|
entry->recv_vcc->vci);
|
995 |
|
|
}
|
996 |
|
|
seq_putc(seq, '\n');
|
997 |
|
|
}
|
998 |
|
|
|
999 |
|
|
struct lec_state {
|
1000 |
|
|
unsigned long flags;
|
1001 |
|
|
struct lec_priv *locked;
|
1002 |
|
|
struct hlist_node *node;
|
1003 |
|
|
struct net_device *dev;
|
1004 |
|
|
int itf;
|
1005 |
|
|
int arp_table;
|
1006 |
|
|
int misc_table;
|
1007 |
|
|
};
|
1008 |
|
|
|
1009 |
|
|
static void *lec_tbl_walk(struct lec_state *state, struct hlist_head *tbl,
|
1010 |
|
|
loff_t *l)
|
1011 |
|
|
{
|
1012 |
|
|
struct hlist_node *e = state->node;
|
1013 |
|
|
struct lec_arp_table *tmp;
|
1014 |
|
|
|
1015 |
|
|
if (!e)
|
1016 |
|
|
e = tbl->first;
|
1017 |
|
|
if (e == (void *)1) {
|
1018 |
|
|
e = tbl->first;
|
1019 |
|
|
--*l;
|
1020 |
|
|
}
|
1021 |
|
|
|
1022 |
|
|
hlist_for_each_entry_from(tmp, e, next) {
|
1023 |
|
|
if (--*l < 0)
|
1024 |
|
|
break;
|
1025 |
|
|
}
|
1026 |
|
|
state->node = e;
|
1027 |
|
|
|
1028 |
|
|
return (*l < 0) ? state : NULL;
|
1029 |
|
|
}
|
1030 |
|
|
|
1031 |
|
|
static void *lec_arp_walk(struct lec_state *state, loff_t *l,
|
1032 |
|
|
struct lec_priv *priv)
|
1033 |
|
|
{
|
1034 |
|
|
void *v = NULL;
|
1035 |
|
|
int p;
|
1036 |
|
|
|
1037 |
|
|
for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) {
|
1038 |
|
|
v = lec_tbl_walk(state, &priv->lec_arp_tables[p], l);
|
1039 |
|
|
if (v)
|
1040 |
|
|
break;
|
1041 |
|
|
}
|
1042 |
|
|
state->arp_table = p;
|
1043 |
|
|
return v;
|
1044 |
|
|
}
|
1045 |
|
|
|
1046 |
|
|
static void *lec_misc_walk(struct lec_state *state, loff_t *l,
|
1047 |
|
|
struct lec_priv *priv)
|
1048 |
|
|
{
|
1049 |
|
|
struct hlist_head *lec_misc_tables[] = {
|
1050 |
|
|
&priv->lec_arp_empty_ones,
|
1051 |
|
|
&priv->lec_no_forward,
|
1052 |
|
|
&priv->mcast_fwds
|
1053 |
|
|
};
|
1054 |
|
|
void *v = NULL;
|
1055 |
|
|
int q;
|
1056 |
|
|
|
1057 |
|
|
for (q = state->misc_table; q < ARRAY_SIZE(lec_misc_tables); q++) {
|
1058 |
|
|
v = lec_tbl_walk(state, lec_misc_tables[q], l);
|
1059 |
|
|
if (v)
|
1060 |
|
|
break;
|
1061 |
|
|
}
|
1062 |
|
|
state->misc_table = q;
|
1063 |
|
|
return v;
|
1064 |
|
|
}
|
1065 |
|
|
|
1066 |
|
|
static void *lec_priv_walk(struct lec_state *state, loff_t *l,
|
1067 |
|
|
struct lec_priv *priv)
|
1068 |
|
|
{
|
1069 |
|
|
if (!state->locked) {
|
1070 |
|
|
state->locked = priv;
|
1071 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, state->flags);
|
1072 |
|
|
}
|
1073 |
|
|
if (!lec_arp_walk(state, l, priv) && !lec_misc_walk(state, l, priv)) {
|
1074 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, state->flags);
|
1075 |
|
|
state->locked = NULL;
|
1076 |
|
|
/* Partial state reset for the next time we get called */
|
1077 |
|
|
state->arp_table = state->misc_table = 0;
|
1078 |
|
|
}
|
1079 |
|
|
return state->locked;
|
1080 |
|
|
}
|
1081 |
|
|
|
1082 |
|
|
static void *lec_itf_walk(struct lec_state *state, loff_t *l)
|
1083 |
|
|
{
|
1084 |
|
|
struct net_device *dev;
|
1085 |
|
|
void *v;
|
1086 |
|
|
|
1087 |
|
|
dev = state->dev ? state->dev : dev_lec[state->itf];
|
1088 |
|
|
v = (dev && dev->priv) ? lec_priv_walk(state, l, dev->priv) : NULL;
|
1089 |
|
|
if (!v && dev) {
|
1090 |
|
|
dev_put(dev);
|
1091 |
|
|
/* Partial state reset for the next time we get called */
|
1092 |
|
|
dev = NULL;
|
1093 |
|
|
}
|
1094 |
|
|
state->dev = dev;
|
1095 |
|
|
return v;
|
1096 |
|
|
}
|
1097 |
|
|
|
1098 |
|
|
static void *lec_get_idx(struct lec_state *state, loff_t l)
|
1099 |
|
|
{
|
1100 |
|
|
void *v = NULL;
|
1101 |
|
|
|
1102 |
|
|
for (; state->itf < MAX_LEC_ITF; state->itf++) {
|
1103 |
|
|
v = lec_itf_walk(state, &l);
|
1104 |
|
|
if (v)
|
1105 |
|
|
break;
|
1106 |
|
|
}
|
1107 |
|
|
return v;
|
1108 |
|
|
}
|
1109 |
|
|
|
1110 |
|
|
static void *lec_seq_start(struct seq_file *seq, loff_t *pos)
|
1111 |
|
|
{
|
1112 |
|
|
struct lec_state *state = seq->private;
|
1113 |
|
|
|
1114 |
|
|
state->itf = 0;
|
1115 |
|
|
state->dev = NULL;
|
1116 |
|
|
state->locked = NULL;
|
1117 |
|
|
state->arp_table = 0;
|
1118 |
|
|
state->misc_table = 0;
|
1119 |
|
|
state->node = (void *)1;
|
1120 |
|
|
|
1121 |
|
|
return *pos ? lec_get_idx(state, *pos) : (void *)1;
|
1122 |
|
|
}
|
1123 |
|
|
|
1124 |
|
|
static void lec_seq_stop(struct seq_file *seq, void *v)
|
1125 |
|
|
{
|
1126 |
|
|
struct lec_state *state = seq->private;
|
1127 |
|
|
|
1128 |
|
|
if (state->dev) {
|
1129 |
|
|
spin_unlock_irqrestore(&state->locked->lec_arp_lock,
|
1130 |
|
|
state->flags);
|
1131 |
|
|
dev_put(state->dev);
|
1132 |
|
|
}
|
1133 |
|
|
}
|
1134 |
|
|
|
1135 |
|
|
static void *lec_seq_next(struct seq_file *seq, void *v, loff_t *pos)
|
1136 |
|
|
{
|
1137 |
|
|
struct lec_state *state = seq->private;
|
1138 |
|
|
|
1139 |
|
|
v = lec_get_idx(state, 1);
|
1140 |
|
|
*pos += !!PTR_ERR(v);
|
1141 |
|
|
return v;
|
1142 |
|
|
}
|
1143 |
|
|
|
1144 |
|
|
static int lec_seq_show(struct seq_file *seq, void *v)
|
1145 |
|
|
{
|
1146 |
|
|
static char lec_banner[] = "Itf MAC ATM destination"
|
1147 |
|
|
" Status Flags "
|
1148 |
|
|
"VPI/VCI Recv VPI/VCI\n";
|
1149 |
|
|
|
1150 |
|
|
if (v == (void *)1)
|
1151 |
|
|
seq_puts(seq, lec_banner);
|
1152 |
|
|
else {
|
1153 |
|
|
struct lec_state *state = seq->private;
|
1154 |
|
|
struct net_device *dev = state->dev;
|
1155 |
|
|
struct lec_arp_table *entry = hlist_entry(state->node, struct lec_arp_table, next);
|
1156 |
|
|
|
1157 |
|
|
seq_printf(seq, "%s ", dev->name);
|
1158 |
|
|
lec_info(seq, entry);
|
1159 |
|
|
}
|
1160 |
|
|
return 0;
|
1161 |
|
|
}
|
1162 |
|
|
|
1163 |
|
|
static const struct seq_operations lec_seq_ops = {
|
1164 |
|
|
.start = lec_seq_start,
|
1165 |
|
|
.next = lec_seq_next,
|
1166 |
|
|
.stop = lec_seq_stop,
|
1167 |
|
|
.show = lec_seq_show,
|
1168 |
|
|
};
|
1169 |
|
|
|
1170 |
|
|
static int lec_seq_open(struct inode *inode, struct file *file)
|
1171 |
|
|
{
|
1172 |
|
|
struct lec_state *state;
|
1173 |
|
|
struct seq_file *seq;
|
1174 |
|
|
int rc = -EAGAIN;
|
1175 |
|
|
|
1176 |
|
|
state = kmalloc(sizeof(*state), GFP_KERNEL);
|
1177 |
|
|
if (!state) {
|
1178 |
|
|
rc = -ENOMEM;
|
1179 |
|
|
goto out;
|
1180 |
|
|
}
|
1181 |
|
|
|
1182 |
|
|
rc = seq_open(file, &lec_seq_ops);
|
1183 |
|
|
if (rc)
|
1184 |
|
|
goto out_kfree;
|
1185 |
|
|
seq = file->private_data;
|
1186 |
|
|
seq->private = state;
|
1187 |
|
|
out:
|
1188 |
|
|
return rc;
|
1189 |
|
|
|
1190 |
|
|
out_kfree:
|
1191 |
|
|
kfree(state);
|
1192 |
|
|
goto out;
|
1193 |
|
|
}
|
1194 |
|
|
|
1195 |
|
|
static int lec_seq_release(struct inode *inode, struct file *file)
|
1196 |
|
|
{
|
1197 |
|
|
return seq_release_private(inode, file);
|
1198 |
|
|
}
|
1199 |
|
|
|
1200 |
|
|
static const struct file_operations lec_seq_fops = {
|
1201 |
|
|
.owner = THIS_MODULE,
|
1202 |
|
|
.open = lec_seq_open,
|
1203 |
|
|
.read = seq_read,
|
1204 |
|
|
.llseek = seq_lseek,
|
1205 |
|
|
.release = lec_seq_release,
|
1206 |
|
|
};
|
1207 |
|
|
#endif
|
1208 |
|
|
|
1209 |
|
|
static int lane_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
|
1210 |
|
|
{
|
1211 |
|
|
struct atm_vcc *vcc = ATM_SD(sock);
|
1212 |
|
|
int err = 0;
|
1213 |
|
|
|
1214 |
|
|
switch (cmd) {
|
1215 |
|
|
case ATMLEC_CTRL:
|
1216 |
|
|
case ATMLEC_MCAST:
|
1217 |
|
|
case ATMLEC_DATA:
|
1218 |
|
|
if (!capable(CAP_NET_ADMIN))
|
1219 |
|
|
return -EPERM;
|
1220 |
|
|
break;
|
1221 |
|
|
default:
|
1222 |
|
|
return -ENOIOCTLCMD;
|
1223 |
|
|
}
|
1224 |
|
|
|
1225 |
|
|
switch (cmd) {
|
1226 |
|
|
case ATMLEC_CTRL:
|
1227 |
|
|
err = lecd_attach(vcc, (int)arg);
|
1228 |
|
|
if (err >= 0)
|
1229 |
|
|
sock->state = SS_CONNECTED;
|
1230 |
|
|
break;
|
1231 |
|
|
case ATMLEC_MCAST:
|
1232 |
|
|
err = lec_mcast_attach(vcc, (int)arg);
|
1233 |
|
|
break;
|
1234 |
|
|
case ATMLEC_DATA:
|
1235 |
|
|
err = lec_vcc_attach(vcc, (void __user *)arg);
|
1236 |
|
|
break;
|
1237 |
|
|
}
|
1238 |
|
|
|
1239 |
|
|
return err;
|
1240 |
|
|
}
|
1241 |
|
|
|
1242 |
|
|
static struct atm_ioctl lane_ioctl_ops = {
|
1243 |
|
|
.owner = THIS_MODULE,
|
1244 |
|
|
.ioctl = lane_ioctl,
|
1245 |
|
|
};
|
1246 |
|
|
|
1247 |
|
|
static int __init lane_module_init(void)
|
1248 |
|
|
{
|
1249 |
|
|
#ifdef CONFIG_PROC_FS
|
1250 |
|
|
struct proc_dir_entry *p;
|
1251 |
|
|
|
1252 |
|
|
p = create_proc_entry("lec", S_IRUGO, atm_proc_root);
|
1253 |
|
|
if (p)
|
1254 |
|
|
p->proc_fops = &lec_seq_fops;
|
1255 |
|
|
#endif
|
1256 |
|
|
|
1257 |
|
|
register_atm_ioctl(&lane_ioctl_ops);
|
1258 |
|
|
printk("lec.c: " __DATE__ " " __TIME__ " initialized\n");
|
1259 |
|
|
return 0;
|
1260 |
|
|
}
|
1261 |
|
|
|
1262 |
|
|
static void __exit lane_module_cleanup(void)
|
1263 |
|
|
{
|
1264 |
|
|
int i;
|
1265 |
|
|
struct lec_priv *priv;
|
1266 |
|
|
|
1267 |
|
|
remove_proc_entry("lec", atm_proc_root);
|
1268 |
|
|
|
1269 |
|
|
deregister_atm_ioctl(&lane_ioctl_ops);
|
1270 |
|
|
|
1271 |
|
|
for (i = 0; i < MAX_LEC_ITF; i++) {
|
1272 |
|
|
if (dev_lec[i] != NULL) {
|
1273 |
|
|
priv = (struct lec_priv *)dev_lec[i]->priv;
|
1274 |
|
|
unregister_netdev(dev_lec[i]);
|
1275 |
|
|
free_netdev(dev_lec[i]);
|
1276 |
|
|
dev_lec[i] = NULL;
|
1277 |
|
|
}
|
1278 |
|
|
}
|
1279 |
|
|
|
1280 |
|
|
return;
|
1281 |
|
|
}
|
1282 |
|
|
|
1283 |
|
|
module_init(lane_module_init);
|
1284 |
|
|
module_exit(lane_module_cleanup);
|
1285 |
|
|
|
1286 |
|
|
/*
|
1287 |
|
|
* LANE2: 3.1.3, LE_RESOLVE.request
|
1288 |
|
|
* Non force allocates memory and fills in *tlvs, fills in *sizeoftlvs.
|
1289 |
|
|
* If sizeoftlvs == NULL the default TLVs associated with with this
|
1290 |
|
|
* lec will be used.
|
1291 |
|
|
* If dst_mac == NULL, targetless LE_ARP will be sent
|
1292 |
|
|
*/
|
1293 |
|
|
static int lane2_resolve(struct net_device *dev, u8 *dst_mac, int force,
|
1294 |
|
|
u8 **tlvs, u32 *sizeoftlvs)
|
1295 |
|
|
{
|
1296 |
|
|
unsigned long flags;
|
1297 |
|
|
struct lec_priv *priv = (struct lec_priv *)dev->priv;
|
1298 |
|
|
struct lec_arp_table *table;
|
1299 |
|
|
struct sk_buff *skb;
|
1300 |
|
|
int retval;
|
1301 |
|
|
|
1302 |
|
|
if (force == 0) {
|
1303 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
1304 |
|
|
table = lec_arp_find(priv, dst_mac);
|
1305 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
1306 |
|
|
if (table == NULL)
|
1307 |
|
|
return -1;
|
1308 |
|
|
|
1309 |
|
|
*tlvs = kmemdup(table->tlvs, table->sizeoftlvs, GFP_ATOMIC);
|
1310 |
|
|
if (*tlvs == NULL)
|
1311 |
|
|
return -1;
|
1312 |
|
|
|
1313 |
|
|
*sizeoftlvs = table->sizeoftlvs;
|
1314 |
|
|
|
1315 |
|
|
return 0;
|
1316 |
|
|
}
|
1317 |
|
|
|
1318 |
|
|
if (sizeoftlvs == NULL)
|
1319 |
|
|
retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, NULL);
|
1320 |
|
|
|
1321 |
|
|
else {
|
1322 |
|
|
skb = alloc_skb(*sizeoftlvs, GFP_ATOMIC);
|
1323 |
|
|
if (skb == NULL)
|
1324 |
|
|
return -1;
|
1325 |
|
|
skb->len = *sizeoftlvs;
|
1326 |
|
|
skb_copy_to_linear_data(skb, *tlvs, *sizeoftlvs);
|
1327 |
|
|
retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, skb);
|
1328 |
|
|
}
|
1329 |
|
|
return retval;
|
1330 |
|
|
}
|
1331 |
|
|
|
1332 |
|
|
/*
|
1333 |
|
|
* LANE2: 3.1.4, LE_ASSOCIATE.request
|
1334 |
|
|
* Associate the *tlvs with the *lan_dst address.
|
1335 |
|
|
* Will overwrite any previous association
|
1336 |
|
|
* Returns 1 for success, 0 for failure (out of memory)
|
1337 |
|
|
*
|
1338 |
|
|
*/
|
1339 |
|
|
static int lane2_associate_req(struct net_device *dev, u8 *lan_dst,
|
1340 |
|
|
u8 *tlvs, u32 sizeoftlvs)
|
1341 |
|
|
{
|
1342 |
|
|
int retval;
|
1343 |
|
|
struct sk_buff *skb;
|
1344 |
|
|
struct lec_priv *priv = (struct lec_priv *)dev->priv;
|
1345 |
|
|
|
1346 |
|
|
if (compare_ether_addr(lan_dst, dev->dev_addr))
|
1347 |
|
|
return (0); /* not our mac address */
|
1348 |
|
|
|
1349 |
|
|
kfree(priv->tlvs); /* NULL if there was no previous association */
|
1350 |
|
|
|
1351 |
|
|
priv->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL);
|
1352 |
|
|
if (priv->tlvs == NULL)
|
1353 |
|
|
return (0);
|
1354 |
|
|
priv->sizeoftlvs = sizeoftlvs;
|
1355 |
|
|
|
1356 |
|
|
skb = alloc_skb(sizeoftlvs, GFP_ATOMIC);
|
1357 |
|
|
if (skb == NULL)
|
1358 |
|
|
return 0;
|
1359 |
|
|
skb->len = sizeoftlvs;
|
1360 |
|
|
skb_copy_to_linear_data(skb, tlvs, sizeoftlvs);
|
1361 |
|
|
retval = send_to_lecd(priv, l_associate_req, NULL, NULL, skb);
|
1362 |
|
|
if (retval != 0)
|
1363 |
|
|
printk("lec.c: lane2_associate_req() failed\n");
|
1364 |
|
|
/*
|
1365 |
|
|
* If the previous association has changed we must
|
1366 |
|
|
* somehow notify other LANE entities about the change
|
1367 |
|
|
*/
|
1368 |
|
|
return (1);
|
1369 |
|
|
}
|
1370 |
|
|
|
1371 |
|
|
/*
|
1372 |
|
|
* LANE2: 3.1.5, LE_ASSOCIATE.indication
|
1373 |
|
|
*
|
1374 |
|
|
*/
|
1375 |
|
|
static void lane2_associate_ind(struct net_device *dev, u8 *mac_addr,
|
1376 |
|
|
u8 *tlvs, u32 sizeoftlvs)
|
1377 |
|
|
{
|
1378 |
|
|
#if 0
|
1379 |
|
|
int i = 0;
|
1380 |
|
|
#endif
|
1381 |
|
|
struct lec_priv *priv = (struct lec_priv *)dev->priv;
|
1382 |
|
|
#if 0 /*
|
1383 |
|
|
* Why have the TLVs in LE_ARP entries
|
1384 |
|
|
* since we do not use them? When you
|
1385 |
|
|
* uncomment this code, make sure the
|
1386 |
|
|
* TLVs get freed when entry is killed
|
1387 |
|
|
*/
|
1388 |
|
|
struct lec_arp_table *entry = lec_arp_find(priv, mac_addr);
|
1389 |
|
|
|
1390 |
|
|
if (entry == NULL)
|
1391 |
|
|
return; /* should not happen */
|
1392 |
|
|
|
1393 |
|
|
kfree(entry->tlvs);
|
1394 |
|
|
|
1395 |
|
|
entry->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL);
|
1396 |
|
|
if (entry->tlvs == NULL)
|
1397 |
|
|
return;
|
1398 |
|
|
entry->sizeoftlvs = sizeoftlvs;
|
1399 |
|
|
#endif
|
1400 |
|
|
#if 0
|
1401 |
|
|
printk("lec.c: lane2_associate_ind()\n");
|
1402 |
|
|
printk("dump of tlvs, sizeoftlvs=%d\n", sizeoftlvs);
|
1403 |
|
|
while (i < sizeoftlvs)
|
1404 |
|
|
printk("%02x ", tlvs[i++]);
|
1405 |
|
|
|
1406 |
|
|
printk("\n");
|
1407 |
|
|
#endif
|
1408 |
|
|
|
1409 |
|
|
/* tell MPOA about the TLVs we saw */
|
1410 |
|
|
if (priv->lane2_ops && priv->lane2_ops->associate_indicator) {
|
1411 |
|
|
priv->lane2_ops->associate_indicator(dev, mac_addr,
|
1412 |
|
|
tlvs, sizeoftlvs);
|
1413 |
|
|
}
|
1414 |
|
|
return;
|
1415 |
|
|
}
|
1416 |
|
|
|
1417 |
|
|
/*
|
1418 |
|
|
* Here starts what used to lec_arpc.c
|
1419 |
|
|
*
|
1420 |
|
|
* lec_arpc.c was added here when making
|
1421 |
|
|
* lane client modular. October 1997
|
1422 |
|
|
*/
|
1423 |
|
|
|
1424 |
|
|
#include <linux/types.h>
|
1425 |
|
|
#include <linux/timer.h>
|
1426 |
|
|
#include <asm/param.h>
|
1427 |
|
|
#include <asm/atomic.h>
|
1428 |
|
|
#include <linux/inetdevice.h>
|
1429 |
|
|
#include <net/route.h>
|
1430 |
|
|
|
1431 |
|
|
#if 0
|
1432 |
|
|
#define pr_debug(format,args...)
|
1433 |
|
|
/*
|
1434 |
|
|
#define pr_debug printk
|
1435 |
|
|
*/
|
1436 |
|
|
#endif
|
1437 |
|
|
#define DEBUG_ARP_TABLE 0
|
1438 |
|
|
|
1439 |
|
|
#define LEC_ARP_REFRESH_INTERVAL (3*HZ)
|
1440 |
|
|
|
1441 |
|
|
static void lec_arp_check_expire(struct work_struct *work);
|
1442 |
|
|
static void lec_arp_expire_arp(unsigned long data);
|
1443 |
|
|
|
1444 |
|
|
/*
|
1445 |
|
|
* Arp table funcs
|
1446 |
|
|
*/
|
1447 |
|
|
|
1448 |
|
|
#define HASH(ch) (ch & (LEC_ARP_TABLE_SIZE -1))
|
1449 |
|
|
|
1450 |
|
|
/*
|
1451 |
|
|
* Initialization of arp-cache
|
1452 |
|
|
*/
|
1453 |
|
|
static void lec_arp_init(struct lec_priv *priv)
|
1454 |
|
|
{
|
1455 |
|
|
unsigned short i;
|
1456 |
|
|
|
1457 |
|
|
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
|
1458 |
|
|
INIT_HLIST_HEAD(&priv->lec_arp_tables[i]);
|
1459 |
|
|
}
|
1460 |
|
|
INIT_HLIST_HEAD(&priv->lec_arp_empty_ones);
|
1461 |
|
|
INIT_HLIST_HEAD(&priv->lec_no_forward);
|
1462 |
|
|
INIT_HLIST_HEAD(&priv->mcast_fwds);
|
1463 |
|
|
spin_lock_init(&priv->lec_arp_lock);
|
1464 |
|
|
INIT_DELAYED_WORK(&priv->lec_arp_work, lec_arp_check_expire);
|
1465 |
|
|
schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL);
|
1466 |
|
|
}
|
1467 |
|
|
|
1468 |
|
|
static void lec_arp_clear_vccs(struct lec_arp_table *entry)
|
1469 |
|
|
{
|
1470 |
|
|
if (entry->vcc) {
|
1471 |
|
|
struct atm_vcc *vcc = entry->vcc;
|
1472 |
|
|
struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
|
1473 |
|
|
struct net_device *dev = (struct net_device *)vcc->proto_data;
|
1474 |
|
|
|
1475 |
|
|
vcc->pop = vpriv->old_pop;
|
1476 |
|
|
if (vpriv->xoff)
|
1477 |
|
|
netif_wake_queue(dev);
|
1478 |
|
|
kfree(vpriv);
|
1479 |
|
|
vcc->user_back = NULL;
|
1480 |
|
|
vcc->push = entry->old_push;
|
1481 |
|
|
vcc_release_async(vcc, -EPIPE);
|
1482 |
|
|
entry->vcc = NULL;
|
1483 |
|
|
}
|
1484 |
|
|
if (entry->recv_vcc) {
|
1485 |
|
|
entry->recv_vcc->push = entry->old_recv_push;
|
1486 |
|
|
vcc_release_async(entry->recv_vcc, -EPIPE);
|
1487 |
|
|
entry->recv_vcc = NULL;
|
1488 |
|
|
}
|
1489 |
|
|
}
|
1490 |
|
|
|
1491 |
|
|
/*
|
1492 |
|
|
* Insert entry to lec_arp_table
|
1493 |
|
|
* LANE2: Add to the end of the list to satisfy 8.1.13
|
1494 |
|
|
*/
|
1495 |
|
|
static inline void
|
1496 |
|
|
lec_arp_add(struct lec_priv *priv, struct lec_arp_table *entry)
|
1497 |
|
|
{
|
1498 |
|
|
struct hlist_head *tmp;
|
1499 |
|
|
|
1500 |
|
|
tmp = &priv->lec_arp_tables[HASH(entry->mac_addr[ETH_ALEN - 1])];
|
1501 |
|
|
hlist_add_head(&entry->next, tmp);
|
1502 |
|
|
|
1503 |
|
|
pr_debug("LEC_ARP: Added entry:%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n",
|
1504 |
|
|
0xff & entry->mac_addr[0], 0xff & entry->mac_addr[1],
|
1505 |
|
|
0xff & entry->mac_addr[2], 0xff & entry->mac_addr[3],
|
1506 |
|
|
0xff & entry->mac_addr[4], 0xff & entry->mac_addr[5]);
|
1507 |
|
|
}
|
1508 |
|
|
|
1509 |
|
|
/*
|
1510 |
|
|
* Remove entry from lec_arp_table
|
1511 |
|
|
*/
|
1512 |
|
|
static int
|
1513 |
|
|
lec_arp_remove(struct lec_priv *priv, struct lec_arp_table *to_remove)
|
1514 |
|
|
{
|
1515 |
|
|
struct hlist_node *node;
|
1516 |
|
|
struct lec_arp_table *entry;
|
1517 |
|
|
int i, remove_vcc = 1;
|
1518 |
|
|
|
1519 |
|
|
if (!to_remove) {
|
1520 |
|
|
return -1;
|
1521 |
|
|
}
|
1522 |
|
|
|
1523 |
|
|
hlist_del(&to_remove->next);
|
1524 |
|
|
del_timer(&to_remove->timer);
|
1525 |
|
|
|
1526 |
|
|
/* If this is the only MAC connected to this VCC, also tear down the VCC */
|
1527 |
|
|
if (to_remove->status >= ESI_FLUSH_PENDING) {
|
1528 |
|
|
/*
|
1529 |
|
|
* ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT
|
1530 |
|
|
*/
|
1531 |
|
|
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
|
1532 |
|
|
hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) {
|
1533 |
|
|
if (memcmp(to_remove->atm_addr,
|
1534 |
|
|
entry->atm_addr, ATM_ESA_LEN) == 0) {
|
1535 |
|
|
remove_vcc = 0;
|
1536 |
|
|
break;
|
1537 |
|
|
}
|
1538 |
|
|
}
|
1539 |
|
|
}
|
1540 |
|
|
if (remove_vcc)
|
1541 |
|
|
lec_arp_clear_vccs(to_remove);
|
1542 |
|
|
}
|
1543 |
|
|
skb_queue_purge(&to_remove->tx_wait); /* FIXME: good place for this? */
|
1544 |
|
|
|
1545 |
|
|
pr_debug("LEC_ARP: Removed entry:%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n",
|
1546 |
|
|
0xff & to_remove->mac_addr[0], 0xff & to_remove->mac_addr[1],
|
1547 |
|
|
0xff & to_remove->mac_addr[2], 0xff & to_remove->mac_addr[3],
|
1548 |
|
|
0xff & to_remove->mac_addr[4], 0xff & to_remove->mac_addr[5]);
|
1549 |
|
|
return 0;
|
1550 |
|
|
}
|
1551 |
|
|
|
1552 |
|
|
#if DEBUG_ARP_TABLE
|
1553 |
|
|
static char *get_status_string(unsigned char st)
|
1554 |
|
|
{
|
1555 |
|
|
switch (st) {
|
1556 |
|
|
case ESI_UNKNOWN:
|
1557 |
|
|
return "ESI_UNKNOWN";
|
1558 |
|
|
case ESI_ARP_PENDING:
|
1559 |
|
|
return "ESI_ARP_PENDING";
|
1560 |
|
|
case ESI_VC_PENDING:
|
1561 |
|
|
return "ESI_VC_PENDING";
|
1562 |
|
|
case ESI_FLUSH_PENDING:
|
1563 |
|
|
return "ESI_FLUSH_PENDING";
|
1564 |
|
|
case ESI_FORWARD_DIRECT:
|
1565 |
|
|
return "ESI_FORWARD_DIRECT";
|
1566 |
|
|
default:
|
1567 |
|
|
return "<UNKNOWN>";
|
1568 |
|
|
}
|
1569 |
|
|
}
|
1570 |
|
|
|
1571 |
|
|
static void dump_arp_table(struct lec_priv *priv)
|
1572 |
|
|
{
|
1573 |
|
|
struct hlist_node *node;
|
1574 |
|
|
struct lec_arp_table *rulla;
|
1575 |
|
|
char buf[256];
|
1576 |
|
|
int i, j, offset;
|
1577 |
|
|
|
1578 |
|
|
printk("Dump %p:\n", priv);
|
1579 |
|
|
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
|
1580 |
|
|
hlist_for_each_entry(rulla, node, &priv->lec_arp_tables[i], next) {
|
1581 |
|
|
offset = 0;
|
1582 |
|
|
offset += sprintf(buf, "%d: %p\n", i, rulla);
|
1583 |
|
|
offset += sprintf(buf + offset, "Mac:");
|
1584 |
|
|
for (j = 0; j < ETH_ALEN; j++) {
|
1585 |
|
|
offset += sprintf(buf + offset,
|
1586 |
|
|
"%2.2x ",
|
1587 |
|
|
rulla->mac_addr[j] & 0xff);
|
1588 |
|
|
}
|
1589 |
|
|
offset += sprintf(buf + offset, "Atm:");
|
1590 |
|
|
for (j = 0; j < ATM_ESA_LEN; j++) {
|
1591 |
|
|
offset += sprintf(buf + offset,
|
1592 |
|
|
"%2.2x ",
|
1593 |
|
|
rulla->atm_addr[j] & 0xff);
|
1594 |
|
|
}
|
1595 |
|
|
offset += sprintf(buf + offset,
|
1596 |
|
|
"Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
|
1597 |
|
|
rulla->vcc ? rulla->vcc->vpi : 0,
|
1598 |
|
|
rulla->vcc ? rulla->vcc->vci : 0,
|
1599 |
|
|
rulla->recv_vcc ? rulla->recv_vcc->
|
1600 |
|
|
vpi : 0,
|
1601 |
|
|
rulla->recv_vcc ? rulla->recv_vcc->
|
1602 |
|
|
vci : 0, rulla->last_used,
|
1603 |
|
|
rulla->timestamp, rulla->no_tries);
|
1604 |
|
|
offset +=
|
1605 |
|
|
sprintf(buf + offset,
|
1606 |
|
|
"Flags:%x, Packets_flooded:%x, Status: %s ",
|
1607 |
|
|
rulla->flags, rulla->packets_flooded,
|
1608 |
|
|
get_status_string(rulla->status));
|
1609 |
|
|
printk("%s\n", buf);
|
1610 |
|
|
}
|
1611 |
|
|
}
|
1612 |
|
|
|
1613 |
|
|
if (!hlist_empty(&priv->lec_no_forward))
|
1614 |
|
|
printk("No forward\n");
|
1615 |
|
|
hlist_for_each_entry(rulla, node, &priv->lec_no_forward, next) {
|
1616 |
|
|
offset = 0;
|
1617 |
|
|
offset += sprintf(buf + offset, "Mac:");
|
1618 |
|
|
for (j = 0; j < ETH_ALEN; j++) {
|
1619 |
|
|
offset += sprintf(buf + offset, "%2.2x ",
|
1620 |
|
|
rulla->mac_addr[j] & 0xff);
|
1621 |
|
|
}
|
1622 |
|
|
offset += sprintf(buf + offset, "Atm:");
|
1623 |
|
|
for (j = 0; j < ATM_ESA_LEN; j++) {
|
1624 |
|
|
offset += sprintf(buf + offset, "%2.2x ",
|
1625 |
|
|
rulla->atm_addr[j] & 0xff);
|
1626 |
|
|
}
|
1627 |
|
|
offset += sprintf(buf + offset,
|
1628 |
|
|
"Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
|
1629 |
|
|
rulla->vcc ? rulla->vcc->vpi : 0,
|
1630 |
|
|
rulla->vcc ? rulla->vcc->vci : 0,
|
1631 |
|
|
rulla->recv_vcc ? rulla->recv_vcc->vpi : 0,
|
1632 |
|
|
rulla->recv_vcc ? rulla->recv_vcc->vci : 0,
|
1633 |
|
|
rulla->last_used,
|
1634 |
|
|
rulla->timestamp, rulla->no_tries);
|
1635 |
|
|
offset += sprintf(buf + offset,
|
1636 |
|
|
"Flags:%x, Packets_flooded:%x, Status: %s ",
|
1637 |
|
|
rulla->flags, rulla->packets_flooded,
|
1638 |
|
|
get_status_string(rulla->status));
|
1639 |
|
|
printk("%s\n", buf);
|
1640 |
|
|
}
|
1641 |
|
|
|
1642 |
|
|
if (!hlist_empty(&priv->lec_arp_empty_ones))
|
1643 |
|
|
printk("Empty ones\n");
|
1644 |
|
|
hlist_for_each_entry(rulla, node, &priv->lec_arp_empty_ones, next) {
|
1645 |
|
|
offset = 0;
|
1646 |
|
|
offset += sprintf(buf + offset, "Mac:");
|
1647 |
|
|
for (j = 0; j < ETH_ALEN; j++) {
|
1648 |
|
|
offset += sprintf(buf + offset, "%2.2x ",
|
1649 |
|
|
rulla->mac_addr[j] & 0xff);
|
1650 |
|
|
}
|
1651 |
|
|
offset += sprintf(buf + offset, "Atm:");
|
1652 |
|
|
for (j = 0; j < ATM_ESA_LEN; j++) {
|
1653 |
|
|
offset += sprintf(buf + offset, "%2.2x ",
|
1654 |
|
|
rulla->atm_addr[j] & 0xff);
|
1655 |
|
|
}
|
1656 |
|
|
offset += sprintf(buf + offset,
|
1657 |
|
|
"Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
|
1658 |
|
|
rulla->vcc ? rulla->vcc->vpi : 0,
|
1659 |
|
|
rulla->vcc ? rulla->vcc->vci : 0,
|
1660 |
|
|
rulla->recv_vcc ? rulla->recv_vcc->vpi : 0,
|
1661 |
|
|
rulla->recv_vcc ? rulla->recv_vcc->vci : 0,
|
1662 |
|
|
rulla->last_used,
|
1663 |
|
|
rulla->timestamp, rulla->no_tries);
|
1664 |
|
|
offset += sprintf(buf + offset,
|
1665 |
|
|
"Flags:%x, Packets_flooded:%x, Status: %s ",
|
1666 |
|
|
rulla->flags, rulla->packets_flooded,
|
1667 |
|
|
get_status_string(rulla->status));
|
1668 |
|
|
printk("%s", buf);
|
1669 |
|
|
}
|
1670 |
|
|
|
1671 |
|
|
if (!hlist_empty(&priv->mcast_fwds))
|
1672 |
|
|
printk("Multicast Forward VCCs\n");
|
1673 |
|
|
hlist_for_each_entry(rulla, node, &priv->mcast_fwds, next) {
|
1674 |
|
|
offset = 0;
|
1675 |
|
|
offset += sprintf(buf + offset, "Mac:");
|
1676 |
|
|
for (j = 0; j < ETH_ALEN; j++) {
|
1677 |
|
|
offset += sprintf(buf + offset, "%2.2x ",
|
1678 |
|
|
rulla->mac_addr[j] & 0xff);
|
1679 |
|
|
}
|
1680 |
|
|
offset += sprintf(buf + offset, "Atm:");
|
1681 |
|
|
for (j = 0; j < ATM_ESA_LEN; j++) {
|
1682 |
|
|
offset += sprintf(buf + offset, "%2.2x ",
|
1683 |
|
|
rulla->atm_addr[j] & 0xff);
|
1684 |
|
|
}
|
1685 |
|
|
offset += sprintf(buf + offset,
|
1686 |
|
|
"Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
|
1687 |
|
|
rulla->vcc ? rulla->vcc->vpi : 0,
|
1688 |
|
|
rulla->vcc ? rulla->vcc->vci : 0,
|
1689 |
|
|
rulla->recv_vcc ? rulla->recv_vcc->vpi : 0,
|
1690 |
|
|
rulla->recv_vcc ? rulla->recv_vcc->vci : 0,
|
1691 |
|
|
rulla->last_used,
|
1692 |
|
|
rulla->timestamp, rulla->no_tries);
|
1693 |
|
|
offset += sprintf(buf + offset,
|
1694 |
|
|
"Flags:%x, Packets_flooded:%x, Status: %s ",
|
1695 |
|
|
rulla->flags, rulla->packets_flooded,
|
1696 |
|
|
get_status_string(rulla->status));
|
1697 |
|
|
printk("%s\n", buf);
|
1698 |
|
|
}
|
1699 |
|
|
|
1700 |
|
|
}
|
1701 |
|
|
#else
|
1702 |
|
|
#define dump_arp_table(priv) do { } while (0)
|
1703 |
|
|
#endif
|
1704 |
|
|
|
1705 |
|
|
/*
|
1706 |
|
|
* Destruction of arp-cache
|
1707 |
|
|
*/
|
1708 |
|
|
static void lec_arp_destroy(struct lec_priv *priv)
|
1709 |
|
|
{
|
1710 |
|
|
unsigned long flags;
|
1711 |
|
|
struct hlist_node *node, *next;
|
1712 |
|
|
struct lec_arp_table *entry;
|
1713 |
|
|
int i;
|
1714 |
|
|
|
1715 |
|
|
cancel_rearming_delayed_work(&priv->lec_arp_work);
|
1716 |
|
|
|
1717 |
|
|
/*
|
1718 |
|
|
* Remove all entries
|
1719 |
|
|
*/
|
1720 |
|
|
|
1721 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
1722 |
|
|
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
|
1723 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) {
|
1724 |
|
|
lec_arp_remove(priv, entry);
|
1725 |
|
|
lec_arp_put(entry);
|
1726 |
|
|
}
|
1727 |
|
|
INIT_HLIST_HEAD(&priv->lec_arp_tables[i]);
|
1728 |
|
|
}
|
1729 |
|
|
|
1730 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) {
|
1731 |
|
|
del_timer_sync(&entry->timer);
|
1732 |
|
|
lec_arp_clear_vccs(entry);
|
1733 |
|
|
hlist_del(&entry->next);
|
1734 |
|
|
lec_arp_put(entry);
|
1735 |
|
|
}
|
1736 |
|
|
INIT_HLIST_HEAD(&priv->lec_arp_empty_ones);
|
1737 |
|
|
|
1738 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->lec_no_forward, next) {
|
1739 |
|
|
del_timer_sync(&entry->timer);
|
1740 |
|
|
lec_arp_clear_vccs(entry);
|
1741 |
|
|
hlist_del(&entry->next);
|
1742 |
|
|
lec_arp_put(entry);
|
1743 |
|
|
}
|
1744 |
|
|
INIT_HLIST_HEAD(&priv->lec_no_forward);
|
1745 |
|
|
|
1746 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) {
|
1747 |
|
|
/* No timer, LANEv2 7.1.20 and 2.3.5.3 */
|
1748 |
|
|
lec_arp_clear_vccs(entry);
|
1749 |
|
|
hlist_del(&entry->next);
|
1750 |
|
|
lec_arp_put(entry);
|
1751 |
|
|
}
|
1752 |
|
|
INIT_HLIST_HEAD(&priv->mcast_fwds);
|
1753 |
|
|
priv->mcast_vcc = NULL;
|
1754 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
1755 |
|
|
}
|
1756 |
|
|
|
1757 |
|
|
/*
|
1758 |
|
|
* Find entry by mac_address
|
1759 |
|
|
*/
|
1760 |
|
|
static struct lec_arp_table *lec_arp_find(struct lec_priv *priv,
|
1761 |
|
|
unsigned char *mac_addr)
|
1762 |
|
|
{
|
1763 |
|
|
struct hlist_node *node;
|
1764 |
|
|
struct hlist_head *head;
|
1765 |
|
|
struct lec_arp_table *entry;
|
1766 |
|
|
|
1767 |
|
|
pr_debug("LEC_ARP: lec_arp_find :%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x\n",
|
1768 |
|
|
mac_addr[0] & 0xff, mac_addr[1] & 0xff, mac_addr[2] & 0xff,
|
1769 |
|
|
mac_addr[3] & 0xff, mac_addr[4] & 0xff, mac_addr[5] & 0xff);
|
1770 |
|
|
|
1771 |
|
|
head = &priv->lec_arp_tables[HASH(mac_addr[ETH_ALEN - 1])];
|
1772 |
|
|
hlist_for_each_entry(entry, node, head, next) {
|
1773 |
|
|
if (!compare_ether_addr(mac_addr, entry->mac_addr)) {
|
1774 |
|
|
return entry;
|
1775 |
|
|
}
|
1776 |
|
|
}
|
1777 |
|
|
return NULL;
|
1778 |
|
|
}
|
1779 |
|
|
|
1780 |
|
|
static struct lec_arp_table *make_entry(struct lec_priv *priv,
|
1781 |
|
|
unsigned char *mac_addr)
|
1782 |
|
|
{
|
1783 |
|
|
struct lec_arp_table *to_return;
|
1784 |
|
|
|
1785 |
|
|
to_return = kzalloc(sizeof(struct lec_arp_table), GFP_ATOMIC);
|
1786 |
|
|
if (!to_return) {
|
1787 |
|
|
printk("LEC: Arp entry kmalloc failed\n");
|
1788 |
|
|
return NULL;
|
1789 |
|
|
}
|
1790 |
|
|
memcpy(to_return->mac_addr, mac_addr, ETH_ALEN);
|
1791 |
|
|
INIT_HLIST_NODE(&to_return->next);
|
1792 |
|
|
init_timer(&to_return->timer);
|
1793 |
|
|
to_return->timer.function = lec_arp_expire_arp;
|
1794 |
|
|
to_return->timer.data = (unsigned long)to_return;
|
1795 |
|
|
to_return->last_used = jiffies;
|
1796 |
|
|
to_return->priv = priv;
|
1797 |
|
|
skb_queue_head_init(&to_return->tx_wait);
|
1798 |
|
|
atomic_set(&to_return->usage, 1);
|
1799 |
|
|
return to_return;
|
1800 |
|
|
}
|
1801 |
|
|
|
1802 |
|
|
/* Arp sent timer expired */
|
1803 |
|
|
static void lec_arp_expire_arp(unsigned long data)
|
1804 |
|
|
{
|
1805 |
|
|
struct lec_arp_table *entry;
|
1806 |
|
|
|
1807 |
|
|
entry = (struct lec_arp_table *)data;
|
1808 |
|
|
|
1809 |
|
|
pr_debug("lec_arp_expire_arp\n");
|
1810 |
|
|
if (entry->status == ESI_ARP_PENDING) {
|
1811 |
|
|
if (entry->no_tries <= entry->priv->max_retry_count) {
|
1812 |
|
|
if (entry->is_rdesc)
|
1813 |
|
|
send_to_lecd(entry->priv, l_rdesc_arp_xmt,
|
1814 |
|
|
entry->mac_addr, NULL, NULL);
|
1815 |
|
|
else
|
1816 |
|
|
send_to_lecd(entry->priv, l_arp_xmt,
|
1817 |
|
|
entry->mac_addr, NULL, NULL);
|
1818 |
|
|
entry->no_tries++;
|
1819 |
|
|
}
|
1820 |
|
|
mod_timer(&entry->timer, jiffies + (1 * HZ));
|
1821 |
|
|
}
|
1822 |
|
|
}
|
1823 |
|
|
|
1824 |
|
|
/* Unknown/unused vcc expire, remove associated entry */
|
1825 |
|
|
static void lec_arp_expire_vcc(unsigned long data)
|
1826 |
|
|
{
|
1827 |
|
|
unsigned long flags;
|
1828 |
|
|
struct lec_arp_table *to_remove = (struct lec_arp_table *)data;
|
1829 |
|
|
struct lec_priv *priv = (struct lec_priv *)to_remove->priv;
|
1830 |
|
|
|
1831 |
|
|
del_timer(&to_remove->timer);
|
1832 |
|
|
|
1833 |
|
|
pr_debug("LEC_ARP %p %p: lec_arp_expire_vcc vpi:%d vci:%d\n",
|
1834 |
|
|
to_remove, priv,
|
1835 |
|
|
to_remove->vcc ? to_remove->recv_vcc->vpi : 0,
|
1836 |
|
|
to_remove->vcc ? to_remove->recv_vcc->vci : 0);
|
1837 |
|
|
|
1838 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
1839 |
|
|
hlist_del(&to_remove->next);
|
1840 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
1841 |
|
|
|
1842 |
|
|
lec_arp_clear_vccs(to_remove);
|
1843 |
|
|
lec_arp_put(to_remove);
|
1844 |
|
|
}
|
1845 |
|
|
|
1846 |
|
|
/*
|
1847 |
|
|
* Expire entries.
|
1848 |
|
|
* 1. Re-set timer
|
1849 |
|
|
* 2. For each entry, delete entries that have aged past the age limit.
|
1850 |
|
|
* 3. For each entry, depending on the status of the entry, perform
|
1851 |
|
|
* the following maintenance.
|
1852 |
|
|
* a. If status is ESI_VC_PENDING or ESI_ARP_PENDING then if the
|
1853 |
|
|
* tick_count is above the max_unknown_frame_time, clear
|
1854 |
|
|
* the tick_count to zero and clear the packets_flooded counter
|
1855 |
|
|
* to zero. This supports the packet rate limit per address
|
1856 |
|
|
* while flooding unknowns.
|
1857 |
|
|
* b. If the status is ESI_FLUSH_PENDING and the tick_count is greater
|
1858 |
|
|
* than or equal to the path_switching_delay, change the status
|
1859 |
|
|
* to ESI_FORWARD_DIRECT. This causes the flush period to end
|
1860 |
|
|
* regardless of the progress of the flush protocol.
|
1861 |
|
|
*/
|
1862 |
|
|
static void lec_arp_check_expire(struct work_struct *work)
|
1863 |
|
|
{
|
1864 |
|
|
unsigned long flags;
|
1865 |
|
|
struct lec_priv *priv =
|
1866 |
|
|
container_of(work, struct lec_priv, lec_arp_work.work);
|
1867 |
|
|
struct hlist_node *node, *next;
|
1868 |
|
|
struct lec_arp_table *entry;
|
1869 |
|
|
unsigned long now;
|
1870 |
|
|
unsigned long time_to_check;
|
1871 |
|
|
int i;
|
1872 |
|
|
|
1873 |
|
|
pr_debug("lec_arp_check_expire %p\n", priv);
|
1874 |
|
|
now = jiffies;
|
1875 |
|
|
restart:
|
1876 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
1877 |
|
|
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
|
1878 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) {
|
1879 |
|
|
if ((entry->flags) & LEC_REMOTE_FLAG &&
|
1880 |
|
|
priv->topology_change)
|
1881 |
|
|
time_to_check = priv->forward_delay_time;
|
1882 |
|
|
else
|
1883 |
|
|
time_to_check = priv->aging_time;
|
1884 |
|
|
|
1885 |
|
|
pr_debug("About to expire: %lx - %lx > %lx\n",
|
1886 |
|
|
now, entry->last_used, time_to_check);
|
1887 |
|
|
if (time_after(now, entry->last_used + time_to_check)
|
1888 |
|
|
&& !(entry->flags & LEC_PERMANENT_FLAG)
|
1889 |
|
|
&& !(entry->mac_addr[0] & 0x01)) { /* LANE2: 7.1.20 */
|
1890 |
|
|
/* Remove entry */
|
1891 |
|
|
pr_debug("LEC:Entry timed out\n");
|
1892 |
|
|
lec_arp_remove(priv, entry);
|
1893 |
|
|
lec_arp_put(entry);
|
1894 |
|
|
} else {
|
1895 |
|
|
/* Something else */
|
1896 |
|
|
if ((entry->status == ESI_VC_PENDING ||
|
1897 |
|
|
entry->status == ESI_ARP_PENDING)
|
1898 |
|
|
&& time_after_eq(now,
|
1899 |
|
|
entry->timestamp +
|
1900 |
|
|
priv->
|
1901 |
|
|
max_unknown_frame_time)) {
|
1902 |
|
|
entry->timestamp = jiffies;
|
1903 |
|
|
entry->packets_flooded = 0;
|
1904 |
|
|
if (entry->status == ESI_VC_PENDING)
|
1905 |
|
|
send_to_lecd(priv, l_svc_setup,
|
1906 |
|
|
entry->mac_addr,
|
1907 |
|
|
entry->atm_addr,
|
1908 |
|
|
NULL);
|
1909 |
|
|
}
|
1910 |
|
|
if (entry->status == ESI_FLUSH_PENDING
|
1911 |
|
|
&&
|
1912 |
|
|
time_after_eq(now, entry->timestamp +
|
1913 |
|
|
priv->path_switching_delay)) {
|
1914 |
|
|
struct sk_buff *skb;
|
1915 |
|
|
struct atm_vcc *vcc = entry->vcc;
|
1916 |
|
|
|
1917 |
|
|
lec_arp_hold(entry);
|
1918 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
1919 |
|
|
while ((skb = skb_dequeue(&entry->tx_wait)) != NULL)
|
1920 |
|
|
lec_send(vcc, skb, entry->priv);
|
1921 |
|
|
entry->last_used = jiffies;
|
1922 |
|
|
entry->status = ESI_FORWARD_DIRECT;
|
1923 |
|
|
lec_arp_put(entry);
|
1924 |
|
|
goto restart;
|
1925 |
|
|
}
|
1926 |
|
|
}
|
1927 |
|
|
}
|
1928 |
|
|
}
|
1929 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
1930 |
|
|
|
1931 |
|
|
schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL);
|
1932 |
|
|
}
|
1933 |
|
|
|
1934 |
|
|
/*
|
1935 |
|
|
* Try to find vcc where mac_address is attached.
|
1936 |
|
|
*
|
1937 |
|
|
*/
|
1938 |
|
|
static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv,
|
1939 |
|
|
unsigned char *mac_to_find, int is_rdesc,
|
1940 |
|
|
struct lec_arp_table **ret_entry)
|
1941 |
|
|
{
|
1942 |
|
|
unsigned long flags;
|
1943 |
|
|
struct lec_arp_table *entry;
|
1944 |
|
|
struct atm_vcc *found;
|
1945 |
|
|
|
1946 |
|
|
if (mac_to_find[0] & 0x01) {
|
1947 |
|
|
switch (priv->lane_version) {
|
1948 |
|
|
case 1:
|
1949 |
|
|
return priv->mcast_vcc;
|
1950 |
|
|
break;
|
1951 |
|
|
case 2: /* LANE2 wants arp for multicast addresses */
|
1952 |
|
|
if (!compare_ether_addr(mac_to_find, bus_mac))
|
1953 |
|
|
return priv->mcast_vcc;
|
1954 |
|
|
break;
|
1955 |
|
|
default:
|
1956 |
|
|
break;
|
1957 |
|
|
}
|
1958 |
|
|
}
|
1959 |
|
|
|
1960 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
1961 |
|
|
entry = lec_arp_find(priv, mac_to_find);
|
1962 |
|
|
|
1963 |
|
|
if (entry) {
|
1964 |
|
|
if (entry->status == ESI_FORWARD_DIRECT) {
|
1965 |
|
|
/* Connection Ok */
|
1966 |
|
|
entry->last_used = jiffies;
|
1967 |
|
|
lec_arp_hold(entry);
|
1968 |
|
|
*ret_entry = entry;
|
1969 |
|
|
found = entry->vcc;
|
1970 |
|
|
goto out;
|
1971 |
|
|
}
|
1972 |
|
|
/*
|
1973 |
|
|
* If the LE_ARP cache entry is still pending, reset count to 0
|
1974 |
|
|
* so another LE_ARP request can be made for this frame.
|
1975 |
|
|
*/
|
1976 |
|
|
if (entry->status == ESI_ARP_PENDING) {
|
1977 |
|
|
entry->no_tries = 0;
|
1978 |
|
|
}
|
1979 |
|
|
/*
|
1980 |
|
|
* Data direct VC not yet set up, check to see if the unknown
|
1981 |
|
|
* frame count is greater than the limit. If the limit has
|
1982 |
|
|
* not been reached, allow the caller to send packet to
|
1983 |
|
|
* BUS.
|
1984 |
|
|
*/
|
1985 |
|
|
if (entry->status != ESI_FLUSH_PENDING &&
|
1986 |
|
|
entry->packets_flooded <
|
1987 |
|
|
priv->maximum_unknown_frame_count) {
|
1988 |
|
|
entry->packets_flooded++;
|
1989 |
|
|
pr_debug("LEC_ARP: Flooding..\n");
|
1990 |
|
|
found = priv->mcast_vcc;
|
1991 |
|
|
goto out;
|
1992 |
|
|
}
|
1993 |
|
|
/*
|
1994 |
|
|
* We got here because entry->status == ESI_FLUSH_PENDING
|
1995 |
|
|
* or BUS flood limit was reached for an entry which is
|
1996 |
|
|
* in ESI_ARP_PENDING or ESI_VC_PENDING state.
|
1997 |
|
|
*/
|
1998 |
|
|
lec_arp_hold(entry);
|
1999 |
|
|
*ret_entry = entry;
|
2000 |
|
|
pr_debug("lec: entry->status %d entry->vcc %p\n", entry->status,
|
2001 |
|
|
entry->vcc);
|
2002 |
|
|
found = NULL;
|
2003 |
|
|
} else {
|
2004 |
|
|
/* No matching entry was found */
|
2005 |
|
|
entry = make_entry(priv, mac_to_find);
|
2006 |
|
|
pr_debug("LEC_ARP: Making entry\n");
|
2007 |
|
|
if (!entry) {
|
2008 |
|
|
found = priv->mcast_vcc;
|
2009 |
|
|
goto out;
|
2010 |
|
|
}
|
2011 |
|
|
lec_arp_add(priv, entry);
|
2012 |
|
|
/* We want arp-request(s) to be sent */
|
2013 |
|
|
entry->packets_flooded = 1;
|
2014 |
|
|
entry->status = ESI_ARP_PENDING;
|
2015 |
|
|
entry->no_tries = 1;
|
2016 |
|
|
entry->last_used = entry->timestamp = jiffies;
|
2017 |
|
|
entry->is_rdesc = is_rdesc;
|
2018 |
|
|
if (entry->is_rdesc)
|
2019 |
|
|
send_to_lecd(priv, l_rdesc_arp_xmt, mac_to_find, NULL,
|
2020 |
|
|
NULL);
|
2021 |
|
|
else
|
2022 |
|
|
send_to_lecd(priv, l_arp_xmt, mac_to_find, NULL, NULL);
|
2023 |
|
|
entry->timer.expires = jiffies + (1 * HZ);
|
2024 |
|
|
entry->timer.function = lec_arp_expire_arp;
|
2025 |
|
|
add_timer(&entry->timer);
|
2026 |
|
|
found = priv->mcast_vcc;
|
2027 |
|
|
}
|
2028 |
|
|
|
2029 |
|
|
out:
|
2030 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
2031 |
|
|
return found;
|
2032 |
|
|
}
|
2033 |
|
|
|
2034 |
|
|
static int
|
2035 |
|
|
lec_addr_delete(struct lec_priv *priv, unsigned char *atm_addr,
|
2036 |
|
|
unsigned long permanent)
|
2037 |
|
|
{
|
2038 |
|
|
unsigned long flags;
|
2039 |
|
|
struct hlist_node *node, *next;
|
2040 |
|
|
struct lec_arp_table *entry;
|
2041 |
|
|
int i;
|
2042 |
|
|
|
2043 |
|
|
pr_debug("lec_addr_delete\n");
|
2044 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
2045 |
|
|
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
|
2046 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) {
|
2047 |
|
|
if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)
|
2048 |
|
|
&& (permanent ||
|
2049 |
|
|
!(entry->flags & LEC_PERMANENT_FLAG))) {
|
2050 |
|
|
lec_arp_remove(priv, entry);
|
2051 |
|
|
lec_arp_put(entry);
|
2052 |
|
|
}
|
2053 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
2054 |
|
|
return 0;
|
2055 |
|
|
}
|
2056 |
|
|
}
|
2057 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
2058 |
|
|
return -1;
|
2059 |
|
|
}
|
2060 |
|
|
|
2061 |
|
|
/*
|
2062 |
|
|
* Notifies: Response to arp_request (atm_addr != NULL)
|
2063 |
|
|
*/
|
2064 |
|
|
static void
|
2065 |
|
|
lec_arp_update(struct lec_priv *priv, unsigned char *mac_addr,
|
2066 |
|
|
unsigned char *atm_addr, unsigned long remoteflag,
|
2067 |
|
|
unsigned int targetless_le_arp)
|
2068 |
|
|
{
|
2069 |
|
|
unsigned long flags;
|
2070 |
|
|
struct hlist_node *node, *next;
|
2071 |
|
|
struct lec_arp_table *entry, *tmp;
|
2072 |
|
|
int i;
|
2073 |
|
|
|
2074 |
|
|
pr_debug("lec:%s", (targetless_le_arp) ? "targetless " : " ");
|
2075 |
|
|
pr_debug("lec_arp_update mac:%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n",
|
2076 |
|
|
mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3],
|
2077 |
|
|
mac_addr[4], mac_addr[5]);
|
2078 |
|
|
|
2079 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
2080 |
|
|
entry = lec_arp_find(priv, mac_addr);
|
2081 |
|
|
if (entry == NULL && targetless_le_arp)
|
2082 |
|
|
goto out; /*
|
2083 |
|
|
* LANE2: ignore targetless LE_ARPs for which
|
2084 |
|
|
* we have no entry in the cache. 7.1.30
|
2085 |
|
|
*/
|
2086 |
|
|
if (!hlist_empty(&priv->lec_arp_empty_ones)) {
|
2087 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) {
|
2088 |
|
|
if (memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN) == 0) {
|
2089 |
|
|
hlist_del(&entry->next);
|
2090 |
|
|
del_timer(&entry->timer);
|
2091 |
|
|
tmp = lec_arp_find(priv, mac_addr);
|
2092 |
|
|
if (tmp) {
|
2093 |
|
|
del_timer(&tmp->timer);
|
2094 |
|
|
tmp->status = ESI_FORWARD_DIRECT;
|
2095 |
|
|
memcpy(tmp->atm_addr, atm_addr, ATM_ESA_LEN);
|
2096 |
|
|
tmp->vcc = entry->vcc;
|
2097 |
|
|
tmp->old_push = entry->old_push;
|
2098 |
|
|
tmp->last_used = jiffies;
|
2099 |
|
|
del_timer(&entry->timer);
|
2100 |
|
|
lec_arp_put(entry);
|
2101 |
|
|
entry = tmp;
|
2102 |
|
|
} else {
|
2103 |
|
|
entry->status = ESI_FORWARD_DIRECT;
|
2104 |
|
|
memcpy(entry->mac_addr, mac_addr, ETH_ALEN);
|
2105 |
|
|
entry->last_used = jiffies;
|
2106 |
|
|
lec_arp_add(priv, entry);
|
2107 |
|
|
}
|
2108 |
|
|
if (remoteflag)
|
2109 |
|
|
entry->flags |= LEC_REMOTE_FLAG;
|
2110 |
|
|
else
|
2111 |
|
|
entry->flags &= ~LEC_REMOTE_FLAG;
|
2112 |
|
|
pr_debug("After update\n");
|
2113 |
|
|
dump_arp_table(priv);
|
2114 |
|
|
goto out;
|
2115 |
|
|
}
|
2116 |
|
|
}
|
2117 |
|
|
}
|
2118 |
|
|
|
2119 |
|
|
entry = lec_arp_find(priv, mac_addr);
|
2120 |
|
|
if (!entry) {
|
2121 |
|
|
entry = make_entry(priv, mac_addr);
|
2122 |
|
|
if (!entry)
|
2123 |
|
|
goto out;
|
2124 |
|
|
entry->status = ESI_UNKNOWN;
|
2125 |
|
|
lec_arp_add(priv, entry);
|
2126 |
|
|
/* Temporary, changes before end of function */
|
2127 |
|
|
}
|
2128 |
|
|
memcpy(entry->atm_addr, atm_addr, ATM_ESA_LEN);
|
2129 |
|
|
del_timer(&entry->timer);
|
2130 |
|
|
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
|
2131 |
|
|
hlist_for_each_entry(tmp, node, &priv->lec_arp_tables[i], next) {
|
2132 |
|
|
if (entry != tmp &&
|
2133 |
|
|
!memcmp(tmp->atm_addr, atm_addr, ATM_ESA_LEN)) {
|
2134 |
|
|
/* Vcc to this host exists */
|
2135 |
|
|
if (tmp->status > ESI_VC_PENDING) {
|
2136 |
|
|
/*
|
2137 |
|
|
* ESI_FLUSH_PENDING,
|
2138 |
|
|
* ESI_FORWARD_DIRECT
|
2139 |
|
|
*/
|
2140 |
|
|
entry->vcc = tmp->vcc;
|
2141 |
|
|
entry->old_push = tmp->old_push;
|
2142 |
|
|
}
|
2143 |
|
|
entry->status = tmp->status;
|
2144 |
|
|
break;
|
2145 |
|
|
}
|
2146 |
|
|
}
|
2147 |
|
|
}
|
2148 |
|
|
if (remoteflag)
|
2149 |
|
|
entry->flags |= LEC_REMOTE_FLAG;
|
2150 |
|
|
else
|
2151 |
|
|
entry->flags &= ~LEC_REMOTE_FLAG;
|
2152 |
|
|
if (entry->status == ESI_ARP_PENDING || entry->status == ESI_UNKNOWN) {
|
2153 |
|
|
entry->status = ESI_VC_PENDING;
|
2154 |
|
|
send_to_lecd(priv, l_svc_setup, entry->mac_addr, atm_addr, NULL);
|
2155 |
|
|
}
|
2156 |
|
|
pr_debug("After update2\n");
|
2157 |
|
|
dump_arp_table(priv);
|
2158 |
|
|
out:
|
2159 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
2160 |
|
|
}
|
2161 |
|
|
|
2162 |
|
|
/*
|
2163 |
|
|
* Notifies: Vcc setup ready
|
2164 |
|
|
*/
|
2165 |
|
|
static void
|
2166 |
|
|
lec_vcc_added(struct lec_priv *priv, struct atmlec_ioc *ioc_data,
|
2167 |
|
|
struct atm_vcc *vcc,
|
2168 |
|
|
void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb))
|
2169 |
|
|
{
|
2170 |
|
|
unsigned long flags;
|
2171 |
|
|
struct hlist_node *node;
|
2172 |
|
|
struct lec_arp_table *entry;
|
2173 |
|
|
int i, found_entry = 0;
|
2174 |
|
|
|
2175 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
2176 |
|
|
if (ioc_data->receive == 2) {
|
2177 |
|
|
/* Vcc for Multicast Forward. No timer, LANEv2 7.1.20 and 2.3.5.3 */
|
2178 |
|
|
|
2179 |
|
|
pr_debug("LEC_ARP: Attaching mcast forward\n");
|
2180 |
|
|
#if 0
|
2181 |
|
|
entry = lec_arp_find(priv, bus_mac);
|
2182 |
|
|
if (!entry) {
|
2183 |
|
|
printk("LEC_ARP: Multicast entry not found!\n");
|
2184 |
|
|
goto out;
|
2185 |
|
|
}
|
2186 |
|
|
memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
|
2187 |
|
|
entry->recv_vcc = vcc;
|
2188 |
|
|
entry->old_recv_push = old_push;
|
2189 |
|
|
#endif
|
2190 |
|
|
entry = make_entry(priv, bus_mac);
|
2191 |
|
|
if (entry == NULL)
|
2192 |
|
|
goto out;
|
2193 |
|
|
del_timer(&entry->timer);
|
2194 |
|
|
memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
|
2195 |
|
|
entry->recv_vcc = vcc;
|
2196 |
|
|
entry->old_recv_push = old_push;
|
2197 |
|
|
hlist_add_head(&entry->next, &priv->mcast_fwds);
|
2198 |
|
|
goto out;
|
2199 |
|
|
} else if (ioc_data->receive == 1) {
|
2200 |
|
|
/*
|
2201 |
|
|
* Vcc which we don't want to make default vcc,
|
2202 |
|
|
* attach it anyway.
|
2203 |
|
|
*/
|
2204 |
|
|
pr_debug
|
2205 |
|
|
("LEC_ARP:Attaching data direct, not default: "
|
2206 |
|
|
"%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n",
|
2207 |
|
|
ioc_data->atm_addr[0], ioc_data->atm_addr[1],
|
2208 |
|
|
ioc_data->atm_addr[2], ioc_data->atm_addr[3],
|
2209 |
|
|
ioc_data->atm_addr[4], ioc_data->atm_addr[5],
|
2210 |
|
|
ioc_data->atm_addr[6], ioc_data->atm_addr[7],
|
2211 |
|
|
ioc_data->atm_addr[8], ioc_data->atm_addr[9],
|
2212 |
|
|
ioc_data->atm_addr[10], ioc_data->atm_addr[11],
|
2213 |
|
|
ioc_data->atm_addr[12], ioc_data->atm_addr[13],
|
2214 |
|
|
ioc_data->atm_addr[14], ioc_data->atm_addr[15],
|
2215 |
|
|
ioc_data->atm_addr[16], ioc_data->atm_addr[17],
|
2216 |
|
|
ioc_data->atm_addr[18], ioc_data->atm_addr[19]);
|
2217 |
|
|
entry = make_entry(priv, bus_mac);
|
2218 |
|
|
if (entry == NULL)
|
2219 |
|
|
goto out;
|
2220 |
|
|
memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
|
2221 |
|
|
memset(entry->mac_addr, 0, ETH_ALEN);
|
2222 |
|
|
entry->recv_vcc = vcc;
|
2223 |
|
|
entry->old_recv_push = old_push;
|
2224 |
|
|
entry->status = ESI_UNKNOWN;
|
2225 |
|
|
entry->timer.expires = jiffies + priv->vcc_timeout_period;
|
2226 |
|
|
entry->timer.function = lec_arp_expire_vcc;
|
2227 |
|
|
hlist_add_head(&entry->next, &priv->lec_no_forward);
|
2228 |
|
|
add_timer(&entry->timer);
|
2229 |
|
|
dump_arp_table(priv);
|
2230 |
|
|
goto out;
|
2231 |
|
|
}
|
2232 |
|
|
pr_debug
|
2233 |
|
|
("LEC_ARP:Attaching data direct, default: "
|
2234 |
|
|
"%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\n",
|
2235 |
|
|
ioc_data->atm_addr[0], ioc_data->atm_addr[1],
|
2236 |
|
|
ioc_data->atm_addr[2], ioc_data->atm_addr[3],
|
2237 |
|
|
ioc_data->atm_addr[4], ioc_data->atm_addr[5],
|
2238 |
|
|
ioc_data->atm_addr[6], ioc_data->atm_addr[7],
|
2239 |
|
|
ioc_data->atm_addr[8], ioc_data->atm_addr[9],
|
2240 |
|
|
ioc_data->atm_addr[10], ioc_data->atm_addr[11],
|
2241 |
|
|
ioc_data->atm_addr[12], ioc_data->atm_addr[13],
|
2242 |
|
|
ioc_data->atm_addr[14], ioc_data->atm_addr[15],
|
2243 |
|
|
ioc_data->atm_addr[16], ioc_data->atm_addr[17],
|
2244 |
|
|
ioc_data->atm_addr[18], ioc_data->atm_addr[19]);
|
2245 |
|
|
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
|
2246 |
|
|
hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) {
|
2247 |
|
|
if (memcmp
|
2248 |
|
|
(ioc_data->atm_addr, entry->atm_addr,
|
2249 |
|
|
ATM_ESA_LEN) == 0) {
|
2250 |
|
|
pr_debug("LEC_ARP: Attaching data direct\n");
|
2251 |
|
|
pr_debug("Currently -> Vcc: %d, Rvcc:%d\n",
|
2252 |
|
|
entry->vcc ? entry->vcc->vci : 0,
|
2253 |
|
|
entry->recv_vcc ? entry->recv_vcc->
|
2254 |
|
|
vci : 0);
|
2255 |
|
|
found_entry = 1;
|
2256 |
|
|
del_timer(&entry->timer);
|
2257 |
|
|
entry->vcc = vcc;
|
2258 |
|
|
entry->old_push = old_push;
|
2259 |
|
|
if (entry->status == ESI_VC_PENDING) {
|
2260 |
|
|
if (priv->maximum_unknown_frame_count
|
2261 |
|
|
== 0)
|
2262 |
|
|
entry->status =
|
2263 |
|
|
ESI_FORWARD_DIRECT;
|
2264 |
|
|
else {
|
2265 |
|
|
entry->timestamp = jiffies;
|
2266 |
|
|
entry->status =
|
2267 |
|
|
ESI_FLUSH_PENDING;
|
2268 |
|
|
#if 0
|
2269 |
|
|
send_to_lecd(priv, l_flush_xmt,
|
2270 |
|
|
NULL,
|
2271 |
|
|
entry->atm_addr,
|
2272 |
|
|
NULL);
|
2273 |
|
|
#endif
|
2274 |
|
|
}
|
2275 |
|
|
} else {
|
2276 |
|
|
/*
|
2277 |
|
|
* They were forming a connection
|
2278 |
|
|
* to us, and we to them. Our
|
2279 |
|
|
* ATM address is numerically lower
|
2280 |
|
|
* than theirs, so we make connection
|
2281 |
|
|
* we formed into default VCC (8.1.11).
|
2282 |
|
|
* Connection they made gets torn
|
2283 |
|
|
* down. This might confuse some
|
2284 |
|
|
* clients. Can be changed if
|
2285 |
|
|
* someone reports trouble...
|
2286 |
|
|
*/
|
2287 |
|
|
;
|
2288 |
|
|
}
|
2289 |
|
|
}
|
2290 |
|
|
}
|
2291 |
|
|
}
|
2292 |
|
|
if (found_entry) {
|
2293 |
|
|
pr_debug("After vcc was added\n");
|
2294 |
|
|
dump_arp_table(priv);
|
2295 |
|
|
goto out;
|
2296 |
|
|
}
|
2297 |
|
|
/*
|
2298 |
|
|
* Not found, snatch address from first data packet that arrives
|
2299 |
|
|
* from this vcc
|
2300 |
|
|
*/
|
2301 |
|
|
entry = make_entry(priv, bus_mac);
|
2302 |
|
|
if (!entry)
|
2303 |
|
|
goto out;
|
2304 |
|
|
entry->vcc = vcc;
|
2305 |
|
|
entry->old_push = old_push;
|
2306 |
|
|
memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
|
2307 |
|
|
memset(entry->mac_addr, 0, ETH_ALEN);
|
2308 |
|
|
entry->status = ESI_UNKNOWN;
|
2309 |
|
|
hlist_add_head(&entry->next, &priv->lec_arp_empty_ones);
|
2310 |
|
|
entry->timer.expires = jiffies + priv->vcc_timeout_period;
|
2311 |
|
|
entry->timer.function = lec_arp_expire_vcc;
|
2312 |
|
|
add_timer(&entry->timer);
|
2313 |
|
|
pr_debug("After vcc was added\n");
|
2314 |
|
|
dump_arp_table(priv);
|
2315 |
|
|
out:
|
2316 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
2317 |
|
|
}
|
2318 |
|
|
|
2319 |
|
|
static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id)
|
2320 |
|
|
{
|
2321 |
|
|
unsigned long flags;
|
2322 |
|
|
struct hlist_node *node;
|
2323 |
|
|
struct lec_arp_table *entry;
|
2324 |
|
|
int i;
|
2325 |
|
|
|
2326 |
|
|
pr_debug("LEC:lec_flush_complete %lx\n", tran_id);
|
2327 |
|
|
restart:
|
2328 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
2329 |
|
|
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
|
2330 |
|
|
hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) {
|
2331 |
|
|
if (entry->flush_tran_id == tran_id
|
2332 |
|
|
&& entry->status == ESI_FLUSH_PENDING) {
|
2333 |
|
|
struct sk_buff *skb;
|
2334 |
|
|
struct atm_vcc *vcc = entry->vcc;
|
2335 |
|
|
|
2336 |
|
|
lec_arp_hold(entry);
|
2337 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
2338 |
|
|
while ((skb = skb_dequeue(&entry->tx_wait)) != NULL)
|
2339 |
|
|
lec_send(vcc, skb, entry->priv);
|
2340 |
|
|
entry->last_used = jiffies;
|
2341 |
|
|
entry->status = ESI_FORWARD_DIRECT;
|
2342 |
|
|
lec_arp_put(entry);
|
2343 |
|
|
pr_debug("LEC_ARP: Flushed\n");
|
2344 |
|
|
goto restart;
|
2345 |
|
|
}
|
2346 |
|
|
}
|
2347 |
|
|
}
|
2348 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
2349 |
|
|
dump_arp_table(priv);
|
2350 |
|
|
}
|
2351 |
|
|
|
2352 |
|
|
static void
|
2353 |
|
|
lec_set_flush_tran_id(struct lec_priv *priv,
|
2354 |
|
|
unsigned char *atm_addr, unsigned long tran_id)
|
2355 |
|
|
{
|
2356 |
|
|
unsigned long flags;
|
2357 |
|
|
struct hlist_node *node;
|
2358 |
|
|
struct lec_arp_table *entry;
|
2359 |
|
|
int i;
|
2360 |
|
|
|
2361 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
2362 |
|
|
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++)
|
2363 |
|
|
hlist_for_each_entry(entry, node, &priv->lec_arp_tables[i], next) {
|
2364 |
|
|
if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)) {
|
2365 |
|
|
entry->flush_tran_id = tran_id;
|
2366 |
|
|
pr_debug("Set flush transaction id to %lx for %p\n",
|
2367 |
|
|
tran_id, entry);
|
2368 |
|
|
}
|
2369 |
|
|
}
|
2370 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
2371 |
|
|
}
|
2372 |
|
|
|
2373 |
|
|
static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc)
|
2374 |
|
|
{
|
2375 |
|
|
unsigned long flags;
|
2376 |
|
|
unsigned char mac_addr[] = {
|
2377 |
|
|
0xff, 0xff, 0xff, 0xff, 0xff, 0xff
|
2378 |
|
|
};
|
2379 |
|
|
struct lec_arp_table *to_add;
|
2380 |
|
|
struct lec_vcc_priv *vpriv;
|
2381 |
|
|
int err = 0;
|
2382 |
|
|
|
2383 |
|
|
if (!(vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL)))
|
2384 |
|
|
return -ENOMEM;
|
2385 |
|
|
vpriv->xoff = 0;
|
2386 |
|
|
vpriv->old_pop = vcc->pop;
|
2387 |
|
|
vcc->user_back = vpriv;
|
2388 |
|
|
vcc->pop = lec_pop;
|
2389 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
2390 |
|
|
to_add = make_entry(priv, mac_addr);
|
2391 |
|
|
if (!to_add) {
|
2392 |
|
|
vcc->pop = vpriv->old_pop;
|
2393 |
|
|
kfree(vpriv);
|
2394 |
|
|
err = -ENOMEM;
|
2395 |
|
|
goto out;
|
2396 |
|
|
}
|
2397 |
|
|
memcpy(to_add->atm_addr, vcc->remote.sas_addr.prv, ATM_ESA_LEN);
|
2398 |
|
|
to_add->status = ESI_FORWARD_DIRECT;
|
2399 |
|
|
to_add->flags |= LEC_PERMANENT_FLAG;
|
2400 |
|
|
to_add->vcc = vcc;
|
2401 |
|
|
to_add->old_push = vcc->push;
|
2402 |
|
|
vcc->push = lec_push;
|
2403 |
|
|
priv->mcast_vcc = vcc;
|
2404 |
|
|
lec_arp_add(priv, to_add);
|
2405 |
|
|
out:
|
2406 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
2407 |
|
|
return err;
|
2408 |
|
|
}
|
2409 |
|
|
|
2410 |
|
|
static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc)
|
2411 |
|
|
{
|
2412 |
|
|
unsigned long flags;
|
2413 |
|
|
struct hlist_node *node, *next;
|
2414 |
|
|
struct lec_arp_table *entry;
|
2415 |
|
|
int i;
|
2416 |
|
|
|
2417 |
|
|
pr_debug("LEC_ARP: lec_vcc_close vpi:%d vci:%d\n", vcc->vpi, vcc->vci);
|
2418 |
|
|
dump_arp_table(priv);
|
2419 |
|
|
|
2420 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
2421 |
|
|
|
2422 |
|
|
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
|
2423 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_tables[i], next) {
|
2424 |
|
|
if (vcc == entry->vcc) {
|
2425 |
|
|
lec_arp_remove(priv, entry);
|
2426 |
|
|
lec_arp_put(entry);
|
2427 |
|
|
if (priv->mcast_vcc == vcc) {
|
2428 |
|
|
priv->mcast_vcc = NULL;
|
2429 |
|
|
}
|
2430 |
|
|
}
|
2431 |
|
|
}
|
2432 |
|
|
}
|
2433 |
|
|
|
2434 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) {
|
2435 |
|
|
if (entry->vcc == vcc) {
|
2436 |
|
|
lec_arp_clear_vccs(entry);
|
2437 |
|
|
del_timer(&entry->timer);
|
2438 |
|
|
hlist_del(&entry->next);
|
2439 |
|
|
lec_arp_put(entry);
|
2440 |
|
|
}
|
2441 |
|
|
}
|
2442 |
|
|
|
2443 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->lec_no_forward, next) {
|
2444 |
|
|
if (entry->recv_vcc == vcc) {
|
2445 |
|
|
lec_arp_clear_vccs(entry);
|
2446 |
|
|
del_timer(&entry->timer);
|
2447 |
|
|
hlist_del(&entry->next);
|
2448 |
|
|
lec_arp_put(entry);
|
2449 |
|
|
}
|
2450 |
|
|
}
|
2451 |
|
|
|
2452 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->mcast_fwds, next) {
|
2453 |
|
|
if (entry->recv_vcc == vcc) {
|
2454 |
|
|
lec_arp_clear_vccs(entry);
|
2455 |
|
|
/* No timer, LANEv2 7.1.20 and 2.3.5.3 */
|
2456 |
|
|
hlist_del(&entry->next);
|
2457 |
|
|
lec_arp_put(entry);
|
2458 |
|
|
}
|
2459 |
|
|
}
|
2460 |
|
|
|
2461 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
2462 |
|
|
dump_arp_table(priv);
|
2463 |
|
|
}
|
2464 |
|
|
|
2465 |
|
|
static void
|
2466 |
|
|
lec_arp_check_empties(struct lec_priv *priv,
|
2467 |
|
|
struct atm_vcc *vcc, struct sk_buff *skb)
|
2468 |
|
|
{
|
2469 |
|
|
unsigned long flags;
|
2470 |
|
|
struct hlist_node *node, *next;
|
2471 |
|
|
struct lec_arp_table *entry, *tmp;
|
2472 |
|
|
struct lecdatahdr_8023 *hdr = (struct lecdatahdr_8023 *)skb->data;
|
2473 |
|
|
unsigned char *src;
|
2474 |
|
|
#ifdef CONFIG_TR
|
2475 |
|
|
struct lecdatahdr_8025 *tr_hdr = (struct lecdatahdr_8025 *)skb->data;
|
2476 |
|
|
|
2477 |
|
|
if (priv->is_trdev)
|
2478 |
|
|
src = tr_hdr->h_source;
|
2479 |
|
|
else
|
2480 |
|
|
#endif
|
2481 |
|
|
src = hdr->h_source;
|
2482 |
|
|
|
2483 |
|
|
spin_lock_irqsave(&priv->lec_arp_lock, flags);
|
2484 |
|
|
hlist_for_each_entry_safe(entry, node, next, &priv->lec_arp_empty_ones, next) {
|
2485 |
|
|
if (vcc == entry->vcc) {
|
2486 |
|
|
del_timer(&entry->timer);
|
2487 |
|
|
memcpy(entry->mac_addr, src, ETH_ALEN);
|
2488 |
|
|
entry->status = ESI_FORWARD_DIRECT;
|
2489 |
|
|
entry->last_used = jiffies;
|
2490 |
|
|
/* We might have got an entry */
|
2491 |
|
|
if ((tmp = lec_arp_find(priv, src))) {
|
2492 |
|
|
lec_arp_remove(priv, tmp);
|
2493 |
|
|
lec_arp_put(tmp);
|
2494 |
|
|
}
|
2495 |
|
|
hlist_del(&entry->next);
|
2496 |
|
|
lec_arp_add(priv, entry);
|
2497 |
|
|
goto out;
|
2498 |
|
|
}
|
2499 |
|
|
}
|
2500 |
|
|
pr_debug("LEC_ARP: Arp_check_empties: entry not found!\n");
|
2501 |
|
|
out:
|
2502 |
|
|
spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
|
2503 |
|
|
}
|
2504 |
|
|
|
2505 |
|
|
MODULE_LICENSE("GPL");
|