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net/atm/lec.c
59.6 KB
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/* |
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* lec.c: Lan Emulation driver |
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* |
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* Marko Kiiskila <mkiiskila@yahoo.com> |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ |
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#include <linux/slab.h> |
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#include <linux/kernel.h> #include <linux/bitops.h> |
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#include <linux/capability.h> |
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/* We are ethernet device */ #include <linux/if_ether.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <net/sock.h> #include <linux/skbuff.h> #include <linux/ip.h> #include <asm/byteorder.h> |
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#include <linux/uaccess.h> |
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#include <net/arp.h> #include <net/dst.h> #include <linux/proc_fs.h> #include <linux/spinlock.h> |
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#include <linux/seq_file.h> |
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/* And atm device */ #include <linux/atmdev.h> #include <linux/atmlec.h> /* Proxy LEC knows about bridging */ |
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#if IS_ENABLED(CONFIG_BRIDGE) |
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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 /* Modular too */ #include <linux/module.h> #include <linux/init.h> |
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/* Hardening for Spectre-v1 */ #include <linux/nospec.h> |
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#include "lec.h" #include "lec_arpc.h" #include "resources.h" |
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#define DUMP_PACKETS 0 /* * 0 = None, * 1 = 30 first bytes * 2 = Whole packet */ |
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#define LEC_UNRES_QUE_LEN 8 /* * number of tx packets to queue for a * single destination while waiting for SVC */ |
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static int lec_open(struct net_device *dev); |
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static netdev_tx_t 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 lec_arp_table *lec_arp_find(struct lec_priv *priv, |
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const 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, const u8 *mac_address, const u8 *tlvs, u32 sizeoftlvs); static int lane2_resolve(struct net_device *dev, const 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, const u8 *lan_dst, const u8 *tlvs, u32 sizeoftlvs); |
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static int lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr, |
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unsigned long permanent); static void lec_arp_check_empties(struct lec_priv *priv, struct atm_vcc *vcc, struct sk_buff *skb); static void lec_arp_destroy(struct lec_priv *priv); 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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const unsigned char *mac_to_find, |
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int is_rdesc, struct lec_arp_table **ret_entry); |
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static void lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr, |
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const unsigned char *atm_addr, unsigned long remoteflag, |
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unsigned int targetless_le_arp); static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id); static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc); static void lec_set_flush_tran_id(struct lec_priv *priv, |
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const 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, const struct atmlec_ioc *ioc_data, |
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struct atm_vcc *vcc, |
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void (*old_push)(struct atm_vcc *vcc, 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 */ static inline void lec_arp_hold(struct lec_arp_table *entry) { |
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refcount_inc(&entry->usage); |
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} static inline void lec_arp_put(struct lec_arp_table *entry) { |
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if (refcount_dec_and_test(&entry->usage)) |
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kfree(entry); } |
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static struct lane2_ops lane2_ops = { |
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.resolve = lane2_resolve, /* spec 3.1.3 */ .associate_req = lane2_associate_req, /* spec 3.1.4 */ .associate_indicator = NULL /* 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 */ static struct net_device *dev_lec[MAX_LEC_ITF]; |
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#if IS_ENABLED(CONFIG_BRIDGE) |
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static void lec_handle_bridge(struct sk_buff *skb, struct net_device *dev) { |
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char *buff; struct lec_priv *priv; /* * Check if this is a BPDU. If so, ask zeppelin to send * LE_TOPOLOGY_REQUEST with the same value of Topology Change bit * as the Config BPDU has */ |
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buff = skb->data + skb->dev->hard_header_len; if (*buff++ == 0x42 && *buff++ == 0x42 && *buff++ == 0x03) { |
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struct sock *sk; |
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struct sk_buff *skb2; struct atmlec_msg *mesg; skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC); if (skb2 == NULL) return; skb2->len = sizeof(struct atmlec_msg); mesg = (struct atmlec_msg *)skb2->data; mesg->type = l_topology_change; buff += 4; |
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mesg->content.normal.flag = *buff & 0x01; /* 0x01 is topology change */ |
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priv = netdev_priv(dev); |
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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); |
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} |
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} |
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#endif /* IS_ENABLED(CONFIG_BRIDGE) */ |
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/* |
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* Open/initialize the netdevice. This is called (in the current kernel) * sometime after booting when the 'ifconfig' program is run. * * This routine should set everything up anew at each open, even * registers that "should" only need to be set once at boot, so that * there is non-reboot way to recover if something goes wrong. */ |
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static int lec_open(struct net_device *dev) |
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{ |
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netif_start_queue(dev); |
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return 0; |
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} |
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static void lec_send(struct atm_vcc *vcc, struct sk_buff *skb) |
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{ |
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struct net_device *dev = skb->dev; |
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ATM_SKB(skb)->vcc = vcc; ATM_SKB(skb)->atm_options = vcc->atm_options; |
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refcount_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc); |
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if (vcc->send(vcc, skb) < 0) { |
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dev->stats.tx_dropped++; |
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return; } |
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dev->stats.tx_packets++; dev->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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pr_info("%s ", dev->name); |
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netif_trans_update(dev); |
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netif_wake_queue(dev); } |
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static netdev_tx_t 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 = netdev_priv(dev); |
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struct lecdatahdr_8023 *lec_h; struct atm_vcc *vcc; |
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struct lec_arp_table *entry; |
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unsigned char *dst; |
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int min_frame_size; |
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int is_rdesc; |
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pr_debug("called "); |
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if (!priv->lecd) { |
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pr_info("%s:No lecd attached ", dev->name); |
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dev->stats.tx_errors++; |
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netif_stop_queue(dev); |
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kfree_skb(skb); return NETDEV_TX_OK; |
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} |
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pr_debug("skbuff head:%lx data:%lx tail:%lx end:%lx ", |
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(long)skb->head, (long)skb->data, (long)skb_tail_pointer(skb), (long)skb_end_pointer(skb)); |
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#if IS_ENABLED(CONFIG_BRIDGE) |
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if (memcmp(skb->data, bridge_ula_lec, sizeof(bridge_ula_lec)) == 0) lec_handle_bridge(skb, dev); |
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#endif |
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/* Make sure we have room for lec_id */ if (skb_headroom(skb) < 2) { |
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pr_debug("reallocating skb "); |
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skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN); |
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if (unlikely(!skb2)) { kfree_skb(skb); |
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return NETDEV_TX_OK; |
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} consume_skb(skb); |
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skb = skb2; } skb_push(skb, 2); |
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/* Put le header to place */ |
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lec_h = (struct lecdatahdr_8023 *)skb->data; lec_h->le_header = htons(priv->lecid); |
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#if DUMP_PACKETS >= 2 |
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#define MAX_DUMP_SKB 99 |
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#elif DUMP_PACKETS >= 1 |
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#define MAX_DUMP_SKB 30 #endif #if DUMP_PACKETS >= 1 printk(KERN_DEBUG "%s: send datalen:%ld lecid:%4.4x ", dev->name, skb->len, priv->lecid); print_hex_dump(KERN_DEBUG, "", DUMP_OFFSET, 16, 1, skb->data, min(skb->len, MAX_DUMP_SKB), true); |
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#endif /* DUMP_PACKETS >= 1 */ |
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/* Minimum ethernet-frame size */ |
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min_frame_size = LEC_MINIMUM_8023_SIZE; |
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if (skb->len < min_frame_size) { if ((skb->len + skb_tailroom(skb)) < min_frame_size) { skb2 = skb_copy_expand(skb, 0, min_frame_size - skb->truesize, GFP_ATOMIC); dev_kfree_skb(skb); if (skb2 == NULL) { |
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dev->stats.tx_dropped++; |
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return NETDEV_TX_OK; |
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} skb = skb2; } |
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skb_put(skb, min_frame_size - skb->len); |
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} /* Send to right vcc */ is_rdesc = 0; dst = lec_h->h_dest; |
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entry = NULL; vcc = lec_arp_resolve(priv, dst, is_rdesc, &entry); |
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pr_debug("%s:vcc:%p vcc_flags:%lx, entry:%p ", dev->name, vcc, vcc ? vcc->flags : 0, entry); |
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if (!vcc || !test_bit(ATM_VF_READY, &vcc->flags)) { if (entry && (entry->tx_wait.qlen < LEC_UNRES_QUE_LEN)) { |
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pr_debug("%s:queuing packet, MAC address %pM ", dev->name, lec_h->h_dest); |
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skb_queue_tail(&entry->tx_wait, skb); } else { |
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pr_debug("%s:tx queue full or no arp entry, dropping, MAC address: %pM ", dev->name, lec_h->h_dest); |
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dev->stats.tx_dropped++; |
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dev_kfree_skb(skb); } |
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goto out; |
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} #if DUMP_PACKETS > 0 |
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printk(KERN_DEBUG "%s:sending to vpi:%d vci:%d ", dev->name, vcc->vpi, vcc->vci); |
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#endif /* DUMP_PACKETS > 0 */ |
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while (entry && (skb2 = skb_dequeue(&entry->tx_wait))) { |
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pr_debug("emptying tx queue, MAC address %pM ", lec_h->h_dest); |
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lec_send(vcc, skb2); |
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} |
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lec_send(vcc, skb); |
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if (!atm_may_send(vcc, 0)) { struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); vpriv->xoff = 1; netif_stop_queue(dev); /* * vcc->pop() might have occurred in between, making * the vcc usuable again. Since xmit is serialized, * this is the only situation we have to re-test. */ if (atm_may_send(vcc, 0)) netif_wake_queue(dev); } |
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out: if (entry) lec_arp_put(entry); |
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netif_trans_update(dev); |
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return NETDEV_TX_OK; |
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} /* The inverse routine to net_open(). */ |
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static int lec_close(struct net_device *dev) |
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{ |
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netif_stop_queue(dev); return 0; |
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} |
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static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb) |
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{ unsigned long flags; |
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struct net_device *dev = (struct net_device *)vcc->proto_data; |
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struct lec_priv *priv = netdev_priv(dev); |
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struct atmlec_msg *mesg; struct lec_arp_table *entry; int i; char *tmp; /* FIXME */ |
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WARN_ON(refcount_sub_and_test(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc)); |
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mesg = (struct atmlec_msg *)skb->data; tmp = skb->data; tmp += sizeof(struct atmlec_msg); |
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pr_debug("%s: msg from zeppelin:%d ", dev->name, mesg->type); |
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switch (mesg->type) { case l_set_mac_addr: |
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for (i = 0; i < 6; i++) |
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dev->dev_addr[i] = mesg->content.normal.mac_addr[i]; |
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break; case l_del_mac_addr: |
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for (i = 0; i < 6; i++) |
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dev->dev_addr[i] = 0; |
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break; case l_addr_delete: lec_addr_delete(priv, mesg->content.normal.atm_addr, mesg->content.normal.flag); break; case l_topology_change: priv->topology_change = mesg->content.normal.flag; break; case l_flush_complete: lec_flush_complete(priv, mesg->content.normal.flag); break; case l_narp_req: /* LANE2: see 7.1.35 in the lane2 spec */ |
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spin_lock_irqsave(&priv->lec_arp_lock, flags); |
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entry = lec_arp_find(priv, mesg->content.normal.mac_addr); lec_arp_remove(priv, entry); |
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spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
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if (mesg->content.normal.no_source_le_narp) break; /* FALL THROUGH */ case l_arp_update: lec_arp_update(priv, mesg->content.normal.mac_addr, mesg->content.normal.atm_addr, mesg->content.normal.flag, mesg->content.normal.targetless_le_arp); |
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pr_debug("in l_arp_update "); |
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if (mesg->sizeoftlvs != 0) { /* LANE2 3.1.5 */ |
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pr_debug("LANE2 3.1.5, got tlvs, size %d ", mesg->sizeoftlvs); |
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lane2_associate_ind(dev, mesg->content.normal.mac_addr, tmp, mesg->sizeoftlvs); } break; case l_config: priv->maximum_unknown_frame_count = mesg->content.config.maximum_unknown_frame_count; priv->max_unknown_frame_time = (mesg->content.config.max_unknown_frame_time * HZ); priv->max_retry_count = mesg->content.config.max_retry_count; priv->aging_time = (mesg->content.config.aging_time * HZ); priv->forward_delay_time = (mesg->content.config.forward_delay_time * HZ); priv->arp_response_time = (mesg->content.config.arp_response_time * HZ); priv->flush_timeout = (mesg->content.config.flush_timeout * HZ); priv->path_switching_delay = (mesg->content.config.path_switching_delay * HZ); |
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priv->lane_version = mesg->content.config.lane_version; /* LANE2 */ |
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priv->lane2_ops = NULL; if (priv->lane_version > 1) priv->lane2_ops = &lane2_ops; |
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rtnl_lock(); |
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if (dev_set_mtu(dev, mesg->content.config.mtu)) |
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pr_info("%s: change_mtu to %d failed ", dev->name, mesg->content.config.mtu); |
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rtnl_unlock(); |
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priv->is_proxy = mesg->content.config.is_proxy; |
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break; case l_flush_tran_id: lec_set_flush_tran_id(priv, mesg->content.normal.atm_addr, mesg->content.normal.flag); break; case l_set_lecid: priv->lecid = (unsigned short)(0xffff & mesg->content.normal.flag); break; case l_should_bridge: |
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#if IS_ENABLED(CONFIG_BRIDGE) |
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{ pr_debug("%s: bridge zeppelin asks about %pM ", dev->name, mesg->content.proxy.mac_addr); |
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429 |
|
b4c84ec0f
|
430 431 |
if (br_fdb_test_addr_hook == NULL) break; |
d44f77466
|
432 |
|
b4c84ec0f
|
433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 |
if (br_fdb_test_addr_hook(dev, mesg->content.proxy.mac_addr)) { /* hit from bridge table, send LE_ARP_RESPONSE */ struct sk_buff *skb2; struct sock *sk; pr_debug("%s: entry found, responding to zeppelin ", dev->name); skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC); if (skb2 == NULL) break; skb2->len = sizeof(struct atmlec_msg); skb_copy_to_linear_data(skb2, mesg, sizeof(*mesg)); atm_force_charge(priv->lecd, skb2->truesize); sk = sk_atm(priv->lecd); skb_queue_tail(&sk->sk_receive_queue, skb2); |
676d23690
|
449 |
sk->sk_data_ready(sk); |
d44f77466
|
450 |
} |
b4c84ec0f
|
451 |
} |
9a81c34ac
|
452 |
#endif /* IS_ENABLED(CONFIG_BRIDGE) */ |
d44f77466
|
453 454 |
break; default: |
c48192a70
|
455 456 |
pr_info("%s: Unknown message type %d ", dev->name, mesg->type); |
d44f77466
|
457 458 459 460 461 |
dev_kfree_skb(skb); return -EINVAL; } dev_kfree_skb(skb); return 0; |
1da177e4c
|
462 |
} |
d44f77466
|
463 |
static void lec_atm_close(struct atm_vcc *vcc) |
1da177e4c
|
464 |
{ |
d44f77466
|
465 466 |
struct sk_buff *skb; struct net_device *dev = (struct net_device *)vcc->proto_data; |
524ad0a79
|
467 |
struct lec_priv *priv = netdev_priv(dev); |
1da177e4c
|
468 |
|
d44f77466
|
469 470 |
priv->lecd = NULL; /* Do something needful? */ |
1da177e4c
|
471 |
|
d44f77466
|
472 473 |
netif_stop_queue(dev); lec_arp_destroy(priv); |
1da177e4c
|
474 |
|
d44f77466
|
475 |
if (skb_peek(&sk_atm(vcc)->sk_receive_queue)) |
c48192a70
|
476 477 |
pr_info("%s closing with messages pending ", dev->name); |
b4c84ec0f
|
478 |
while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue))) { |
d44f77466
|
479 |
atm_return(vcc, skb->truesize); |
1da177e4c
|
480 |
dev_kfree_skb(skb); |
d44f77466
|
481 |
} |
c48192a70
|
482 483 |
pr_info("%s: Shut down! ", dev->name); |
d44f77466
|
484 |
module_put(THIS_MODULE); |
1da177e4c
|
485 |
} |
800bb47e7
|
486 |
static const struct atmdev_ops lecdev_ops = { |
d44f77466
|
487 488 |
.close = lec_atm_close, .send = lec_atm_send |
1da177e4c
|
489 490 491 |
}; static struct atm_dev lecatm_dev = { |
d44f77466
|
492 493 494 |
.ops = &lecdev_ops, .type = "lec", .number = 999, /* dummy device number */ |
4ef8d0aea
|
495 |
.lock = __SPIN_LOCK_UNLOCKED(lecatm_dev.lock) |
1da177e4c
|
496 497 498 499 500 501 |
}; /* * LANE2: new argument struct sk_buff *data contains * the LE_ARP based TLVs introduced in the LANE2 spec */ |
d44f77466
|
502 503 |
static int send_to_lecd(struct lec_priv *priv, atmlec_msg_type type, |
61c33e012
|
504 |
const unsigned char *mac_addr, const unsigned char *atm_addr, |
d44f77466
|
505 |
struct sk_buff *data) |
1da177e4c
|
506 507 508 509 |
{ struct sock *sk; struct sk_buff *skb; struct atmlec_msg *mesg; |
c48192a70
|
510 |
if (!priv || !priv->lecd) |
1da177e4c
|
511 |
return -1; |
1da177e4c
|
512 513 514 515 516 |
skb = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC); if (!skb) return -1; skb->len = sizeof(struct atmlec_msg); mesg = (struct atmlec_msg *)skb->data; |
d44f77466
|
517 |
memset(mesg, 0, sizeof(struct atmlec_msg)); |
1da177e4c
|
518 |
mesg->type = type; |
d44f77466
|
519 520 |
if (data != NULL) mesg->sizeoftlvs = data->len; |
1da177e4c
|
521 |
if (mac_addr) |
9be68c1ae
|
522 |
ether_addr_copy(mesg->content.normal.mac_addr, mac_addr); |
d44f77466
|
523 524 |
else mesg->content.normal.targetless_le_arp = 1; |
1da177e4c
|
525 526 |
if (atm_addr) memcpy(&mesg->content.normal.atm_addr, atm_addr, ATM_ESA_LEN); |
d44f77466
|
527 |
atm_force_charge(priv->lecd, skb->truesize); |
1da177e4c
|
528 529 |
sk = sk_atm(priv->lecd); skb_queue_tail(&sk->sk_receive_queue, skb); |
676d23690
|
530 |
sk->sk_data_ready(sk); |
1da177e4c
|
531 |
|
d44f77466
|
532 |
if (data != NULL) { |
99824461e
|
533 534 |
pr_debug("about to send %d bytes of data ", data->len); |
d44f77466
|
535 536 |
atm_force_charge(priv->lecd, data->truesize); skb_queue_tail(&sk->sk_receive_queue, data); |
676d23690
|
537 |
sk->sk_data_ready(sk); |
d44f77466
|
538 |
} |
1da177e4c
|
539 |
|
d44f77466
|
540 |
return 0; |
1da177e4c
|
541 |
} |
1da177e4c
|
542 543 |
static void lec_set_multicast_list(struct net_device *dev) { |
d44f77466
|
544 545 546 547 |
/* * by default, all multicast frames arrive over the bus. * eventually support selective multicast service */ |
1da177e4c
|
548 |
} |
004b3225c
|
549 550 551 552 |
static const struct net_device_ops lec_netdev_ops = { .ndo_open = lec_open, .ndo_stop = lec_close, .ndo_start_xmit = lec_start_xmit, |
004b3225c
|
553 |
.ndo_tx_timeout = lec_tx_timeout, |
afc4b13df
|
554 |
.ndo_set_rx_mode = lec_set_multicast_list, |
004b3225c
|
555 |
}; |
61c33e012
|
556 |
static const unsigned char lec_ctrl_magic[] = { |
d44f77466
|
557 558 559 560 561 |
0xff, 0x00, 0x01, 0x01 }; |
1da177e4c
|
562 |
|
4a7097fcc
|
563 564 565 566 |
#define LEC_DATA_DIRECT_8023 2 #define LEC_DATA_DIRECT_8025 3 static int lec_is_data_direct(struct atm_vcc *vcc) |
d44f77466
|
567 |
{ |
4a7097fcc
|
568 569 |
return ((vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8023) || (vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8025)); |
d44f77466
|
570 |
} |
4a7097fcc
|
571 |
|
d44f77466
|
572 |
static void lec_push(struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4c
|
573 |
{ |
4a7097fcc
|
574 |
unsigned long flags; |
d44f77466
|
575 |
struct net_device *dev = (struct net_device *)vcc->proto_data; |
524ad0a79
|
576 |
struct lec_priv *priv = netdev_priv(dev); |
1da177e4c
|
577 |
|
c48192a70
|
578 |
#if DUMP_PACKETS > 0 |
99824461e
|
579 580 581 |
printk(KERN_DEBUG "%s: vcc vpi:%d vci:%d ", dev->name, vcc->vpi, vcc->vci); |
1da177e4c
|
582 |
#endif |
d44f77466
|
583 |
if (!skb) { |
522400623
|
584 585 |
pr_debug("%s: null skb ", dev->name); |
d44f77466
|
586 587 588 |
lec_vcc_close(priv, vcc); return; } |
1da177e4c
|
589 |
#if DUMP_PACKETS >= 2 |
99824461e
|
590 |
#define MAX_SKB_DUMP 99 |
1da177e4c
|
591 |
#elif DUMP_PACKETS >= 1 |
99824461e
|
592 593 594 595 596 597 598 599 |
#define MAX_SKB_DUMP 30 #endif #if DUMP_PACKETS > 0 printk(KERN_DEBUG "%s: rcv datalen:%ld lecid:%4.4x ", dev->name, skb->len, priv->lecid); print_hex_dump(KERN_DEBUG, "", DUMP_OFFSET, 16, 1, skb->data, min(MAX_SKB_DUMP, skb->len), true); |
1da177e4c
|
600 |
#endif /* DUMP_PACKETS > 0 */ |
99824461e
|
601 602 |
if (memcmp(skb->data, lec_ctrl_magic, 4) == 0) { /* Control frame, to daemon */ |
1da177e4c
|
603 |
struct sock *sk = sk_atm(vcc); |
522400623
|
604 605 |
pr_debug("%s: To daemon ", dev->name); |
d44f77466
|
606 |
skb_queue_tail(&sk->sk_receive_queue, skb); |
676d23690
|
607 |
sk->sk_data_ready(sk); |
d44f77466
|
608 |
} else { /* Data frame, queue to protocol handlers */ |
4a7097fcc
|
609 |
struct lec_arp_table *entry; |
d44f77466
|
610 611 612 |
unsigned char *src, *dst; atm_return(vcc, skb->truesize); |
30d492da7
|
613 |
if (*(__be16 *) skb->data == htons(priv->lecid) || |
d44f77466
|
614 615 616 617 618 |
!priv->lecd || !(dev->flags & IFF_UP)) { /* * Probably looping back, or if lecd is missing, * lecd has gone down */ |
522400623
|
619 620 |
pr_debug("Ignoring frame... "); |
d44f77466
|
621 622 623 |
dev_kfree_skb(skb); return; } |
60eea6cf2
|
624 |
dst = ((struct lecdatahdr_8023 *)skb->data)->h_dest; |
4a7097fcc
|
625 |
|
d44f77466
|
626 627 |
/* * If this is a Data Direct VCC, and the VCC does not match |
4a7097fcc
|
628 629 630 631 |
* the LE_ARP cache entry, delete the LE_ARP cache entry. */ spin_lock_irqsave(&priv->lec_arp_lock, flags); if (lec_is_data_direct(vcc)) { |
60eea6cf2
|
632 |
src = ((struct lecdatahdr_8023 *)skb->data)->h_source; |
4a7097fcc
|
633 634 635 |
entry = lec_arp_find(priv, src); if (entry && entry->vcc != vcc) { lec_arp_remove(priv, entry); |
33a9c2d4b
|
636 |
lec_arp_put(entry); |
4a7097fcc
|
637 638 639 |
} } spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1da177e4c
|
640 |
|
d44f77466
|
641 642 |
if (!(dst[0] & 0x01) && /* Never filter Multi/Broadcast */ !priv->is_proxy && /* Proxy wants all the packets */ |
1da177e4c
|
643 |
memcmp(dst, dev->dev_addr, dev->addr_len)) { |
d44f77466
|
644 645 646 |
dev_kfree_skb(skb); return; } |
c48192a70
|
647 |
if (!hlist_empty(&priv->lec_arp_empty_ones)) |
d44f77466
|
648 |
lec_arp_check_empties(priv, vcc, skb); |
d44f77466
|
649 |
skb_pull(skb, 2); /* skip lec_id */ |
60eea6cf2
|
650 |
skb->protocol = eth_type_trans(skb, dev); |
162619e59
|
651 652 |
dev->stats.rx_packets++; dev->stats.rx_bytes += skb->len; |
d44f77466
|
653 654 655 |
memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data)); netif_rx(skb); } |
1da177e4c
|
656 |
} |
d44f77466
|
657 |
static void lec_pop(struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4c
|
658 659 660 661 662 |
{ struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); struct net_device *dev = skb->dev; if (vpriv == NULL) { |
99824461e
|
663 664 |
pr_info("vpriv = NULL!?!?!? "); |
1da177e4c
|
665 666 667 668 669 670 671 672 673 674 675 |
return; } vpriv->old_pop(vcc, skb); if (vpriv->xoff && atm_may_send(vcc, 0)) { vpriv->xoff = 0; if (netif_running(dev) && netif_queue_stopped(dev)) netif_wake_queue(dev); } } |
d44f77466
|
676 |
static int lec_vcc_attach(struct atm_vcc *vcc, void __user *arg) |
1da177e4c
|
677 678 |
{ struct lec_vcc_priv *vpriv; |
d44f77466
|
679 680 681 682 683 |
int bytes_left; struct atmlec_ioc ioc_data; /* Lecd must be up in this case */ bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmlec_ioc)); |
99824461e
|
684 685 686 |
if (bytes_left != 0) pr_info("copy from user failed for %d bytes ", bytes_left); |
acf784bd0
|
687 688 689 690 |
if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF) return -EINVAL; ioc_data.dev_num = array_index_nospec(ioc_data.dev_num, MAX_LEC_ITF); if (!dev_lec[ioc_data.dev_num]) |
d44f77466
|
691 |
return -EINVAL; |
c48192a70
|
692 693 |
vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL); if (!vpriv) |
1da177e4c
|
694 695 696 697 698 |
return -ENOMEM; vpriv->xoff = 0; vpriv->old_pop = vcc->pop; vcc->user_back = vpriv; vcc->pop = lec_pop; |
524ad0a79
|
699 |
lec_vcc_added(netdev_priv(dev_lec[ioc_data.dev_num]), |
d44f77466
|
700 701 702 703 |
&ioc_data, vcc, vcc->push); vcc->proto_data = dev_lec[ioc_data.dev_num]; vcc->push = lec_push; return 0; |
1da177e4c
|
704 |
} |
d44f77466
|
705 |
static int lec_mcast_attach(struct atm_vcc *vcc, int arg) |
1da177e4c
|
706 |
{ |
d44f77466
|
707 708 709 |
if (arg < 0 || arg >= MAX_LEC_ITF || !dev_lec[arg]) return -EINVAL; vcc->proto_data = dev_lec[arg]; |
37d668004
|
710 |
return lec_mcast_make(netdev_priv(dev_lec[arg]), vcc); |
1da177e4c
|
711 712 713 |
} /* Initialize device. */ |
d44f77466
|
714 715 716 717 718 719 720 721 722 |
static int lecd_attach(struct atm_vcc *vcc, int arg) { int i; struct lec_priv *priv; if (arg < 0) i = 0; else i = arg; |
d44f77466
|
723 724 |
if (arg >= MAX_LEC_ITF) return -EINVAL; |
d44f77466
|
725 |
if (!dev_lec[i]) { |
60eea6cf2
|
726 |
int size; |
1da177e4c
|
727 |
|
d44f77466
|
728 |
size = sizeof(struct lec_priv); |
60eea6cf2
|
729 |
dev_lec[i] = alloc_etherdev(size); |
d44f77466
|
730 731 |
if (!dev_lec[i]) return -ENOMEM; |
eb0445887
|
732 |
dev_lec[i]->netdev_ops = &lec_netdev_ops; |
8b6b4135e
|
733 |
dev_lec[i]->max_mtu = 18190; |
d44f77466
|
734 735 736 737 738 |
snprintf(dev_lec[i]->name, IFNAMSIZ, "lec%d", i); if (register_netdev(dev_lec[i])) { free_netdev(dev_lec[i]); return -EINVAL; } |
524ad0a79
|
739 |
priv = netdev_priv(dev_lec[i]); |
d44f77466
|
740 |
} else { |
524ad0a79
|
741 |
priv = netdev_priv(dev_lec[i]); |
d44f77466
|
742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 |
if (priv->lecd) return -EADDRINUSE; } lec_arp_init(priv); priv->itfnum = i; /* LANE2 addition */ priv->lecd = vcc; vcc->dev = &lecatm_dev; vcc_insert_socket(sk_atm(vcc)); vcc->proto_data = dev_lec[i]; set_bit(ATM_VF_META, &vcc->flags); set_bit(ATM_VF_READY, &vcc->flags); /* Set default values to these variables */ priv->maximum_unknown_frame_count = 1; priv->max_unknown_frame_time = (1 * HZ); priv->vcc_timeout_period = (1200 * HZ); priv->max_retry_count = 1; priv->aging_time = (300 * HZ); priv->forward_delay_time = (15 * HZ); priv->topology_change = 0; priv->arp_response_time = (1 * HZ); priv->flush_timeout = (4 * HZ); priv->path_switching_delay = (6 * HZ); |
c48192a70
|
766 |
if (dev_lec[i]->flags & IFF_UP) |
d44f77466
|
767 |
netif_start_queue(dev_lec[i]); |
d44f77466
|
768 769 |
__module_get(THIS_MODULE); return i; |
1da177e4c
|
770 771 772 |
} #ifdef CONFIG_PROC_FS |
36cbd3dcc
|
773 |
static const char *lec_arp_get_status_string(unsigned char status) |
1da177e4c
|
774 |
{ |
36cbd3dcc
|
775 |
static const char *const lec_arp_status_string[] = { |
1da177e4c
|
776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 |
"ESI_UNKNOWN ", "ESI_ARP_PENDING ", "ESI_VC_PENDING ", "<Undefined> ", "ESI_FLUSH_PENDING ", "ESI_FORWARD_DIRECT" }; if (status > ESI_FORWARD_DIRECT) status = 3; /* ESI_UNDEFINED */ return lec_arp_status_string[status]; } static void lec_info(struct seq_file *seq, struct lec_arp_table *entry) { int i; for (i = 0; i < ETH_ALEN; i++) seq_printf(seq, "%2.2x", entry->mac_addr[i] & 0xff); seq_printf(seq, " "); for (i = 0; i < ATM_ESA_LEN; i++) seq_printf(seq, "%2.2x", entry->atm_addr[i] & 0xff); seq_printf(seq, " %s %4.4x", lec_arp_get_status_string(entry->status), entry->flags & 0xffff); if (entry->vcc) seq_printf(seq, "%3d %3d ", entry->vcc->vpi, entry->vcc->vci); else |
d44f77466
|
803 |
seq_printf(seq, " "); |
1da177e4c
|
804 805 806 |
if (entry->recv_vcc) { seq_printf(seq, " %3d %3d", entry->recv_vcc->vpi, entry->recv_vcc->vci); |
d44f77466
|
807 808 809 |
} seq_putc(seq, ' '); |
1da177e4c
|
810 |
} |
1da177e4c
|
811 812 813 |
struct lec_state { unsigned long flags; struct lec_priv *locked; |
d0732f649
|
814 |
struct hlist_node *node; |
1da177e4c
|
815 816 817 818 819 |
struct net_device *dev; int itf; int arp_table; int misc_table; }; |
d0732f649
|
820 |
static void *lec_tbl_walk(struct lec_state *state, struct hlist_head *tbl, |
1da177e4c
|
821 822 |
loff_t *l) { |
d0732f649
|
823 |
struct hlist_node *e = state->node; |
1da177e4c
|
824 825 |
if (!e) |
d0732f649
|
826 |
e = tbl->first; |
2e1e9848a
|
827 |
if (e == SEQ_START_TOKEN) { |
d0732f649
|
828 |
e = tbl->first; |
1da177e4c
|
829 830 |
--*l; } |
d0732f649
|
831 |
|
8356f9d56
|
832 |
for (; e; e = e->next) { |
1da177e4c
|
833 834 835 |
if (--*l < 0) break; } |
d0732f649
|
836 |
state->node = e; |
1da177e4c
|
837 838 839 840 |
return (*l < 0) ? state : NULL; } static void *lec_arp_walk(struct lec_state *state, loff_t *l, |
d44f77466
|
841 |
struct lec_priv *priv) |
1da177e4c
|
842 843 844 845 846 |
{ void *v = NULL; int p; for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) { |
d0732f649
|
847 |
v = lec_tbl_walk(state, &priv->lec_arp_tables[p], l); |
1da177e4c
|
848 849 850 851 852 853 854 855 856 857 |
if (v) break; } state->arp_table = p; return v; } static void *lec_misc_walk(struct lec_state *state, loff_t *l, struct lec_priv *priv) { |
d0732f649
|
858 859 860 861 |
struct hlist_head *lec_misc_tables[] = { &priv->lec_arp_empty_ones, &priv->lec_no_forward, &priv->mcast_fwds |
1da177e4c
|
862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 |
}; void *v = NULL; int q; for (q = state->misc_table; q < ARRAY_SIZE(lec_misc_tables); q++) { v = lec_tbl_walk(state, lec_misc_tables[q], l); if (v) break; } state->misc_table = q; return v; } static void *lec_priv_walk(struct lec_state *state, loff_t *l, struct lec_priv *priv) { if (!state->locked) { state->locked = priv; spin_lock_irqsave(&priv->lec_arp_lock, state->flags); } |
d44f77466
|
882 |
if (!lec_arp_walk(state, l, priv) && !lec_misc_walk(state, l, priv)) { |
1da177e4c
|
883 884 885 886 887 888 889 890 891 892 893 894 895 896 |
spin_unlock_irqrestore(&priv->lec_arp_lock, state->flags); state->locked = NULL; /* Partial state reset for the next time we get called */ state->arp_table = state->misc_table = 0; } return state->locked; } static void *lec_itf_walk(struct lec_state *state, loff_t *l) { struct net_device *dev; void *v; dev = state->dev ? state->dev : dev_lec[state->itf]; |
524ad0a79
|
897 898 |
v = (dev && netdev_priv(dev)) ? lec_priv_walk(state, l, netdev_priv(dev)) : NULL; |
1da177e4c
|
899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 |
if (!v && dev) { dev_put(dev); /* Partial state reset for the next time we get called */ dev = NULL; } state->dev = dev; return v; } static void *lec_get_idx(struct lec_state *state, loff_t l) { void *v = NULL; for (; state->itf < MAX_LEC_ITF; state->itf++) { v = lec_itf_walk(state, &l); if (v) break; } |
d44f77466
|
917 |
return v; |
1da177e4c
|
918 919 920 921 922 923 924 925 926 927 928 |
} static void *lec_seq_start(struct seq_file *seq, loff_t *pos) { struct lec_state *state = seq->private; state->itf = 0; state->dev = NULL; state->locked = NULL; state->arp_table = 0; state->misc_table = 0; |
2e1e9848a
|
929 |
state->node = SEQ_START_TOKEN; |
1da177e4c
|
930 |
|
2e1e9848a
|
931 |
return *pos ? lec_get_idx(state, *pos) : SEQ_START_TOKEN; |
1da177e4c
|
932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 |
} static void lec_seq_stop(struct seq_file *seq, void *v) { struct lec_state *state = seq->private; if (state->dev) { spin_unlock_irqrestore(&state->locked->lec_arp_lock, state->flags); dev_put(state->dev); } } static void *lec_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct lec_state *state = seq->private; v = lec_get_idx(state, 1); *pos += !!PTR_ERR(v); return v; } static int lec_seq_show(struct seq_file *seq, void *v) { |
36cbd3dcc
|
956 957 |
static const char lec_banner[] = "Itf MAC ATM destination" |
d44f77466
|
958 959 960 |
" Status Flags " "VPI/VCI Recv VPI/VCI "; |
1da177e4c
|
961 |
|
2e1e9848a
|
962 |
if (v == SEQ_START_TOKEN) |
1da177e4c
|
963 964 965 |
seq_puts(seq, lec_banner); else { struct lec_state *state = seq->private; |
d44f77466
|
966 |
struct net_device *dev = state->dev; |
c48192a70
|
967 968 969 |
struct lec_arp_table *entry = hlist_entry(state->node, struct lec_arp_table, next); |
1da177e4c
|
970 971 |
seq_printf(seq, "%s ", dev->name); |
d0732f649
|
972 |
lec_info(seq, entry); |
1da177e4c
|
973 974 975 |
} return 0; } |
56b3d975b
|
976 |
static const struct seq_operations lec_seq_ops = { |
d44f77466
|
977 978 979 980 |
.start = lec_seq_start, .next = lec_seq_next, .stop = lec_seq_stop, .show = lec_seq_show, |
1da177e4c
|
981 |
}; |
1da177e4c
|
982 983 984 985 986 987 |
#endif static int lane_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { struct atm_vcc *vcc = ATM_SD(sock); int err = 0; |
d44f77466
|
988 |
|
1da177e4c
|
989 |
switch (cmd) { |
d44f77466
|
990 991 992 993 994 995 996 997 |
case ATMLEC_CTRL: case ATMLEC_MCAST: case ATMLEC_DATA: if (!capable(CAP_NET_ADMIN)) return -EPERM; break; default: return -ENOIOCTLCMD; |
1da177e4c
|
998 999 1000 |
} switch (cmd) { |
d44f77466
|
1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 |
case ATMLEC_CTRL: err = lecd_attach(vcc, (int)arg); if (err >= 0) sock->state = SS_CONNECTED; break; case ATMLEC_MCAST: err = lec_mcast_attach(vcc, (int)arg); break; case ATMLEC_DATA: err = lec_vcc_attach(vcc, (void __user *)arg); break; |
1da177e4c
|
1012 1013 1014 1015 1016 1017 |
} return err; } static struct atm_ioctl lane_ioctl_ops = { |
d44f77466
|
1018 1019 |
.owner = THIS_MODULE, .ioctl = lane_ioctl, |
1da177e4c
|
1020 1021 1022 1023 1024 1025 |
}; static int __init lane_module_init(void) { #ifdef CONFIG_PROC_FS struct proc_dir_entry *p; |
44414d82c
|
1026 1027 |
p = proc_create_seq_private("lec", 0444, atm_proc_root, &lec_seq_ops, sizeof(struct lec_state), NULL); |
dbee0d3f4
|
1028 |
if (!p) { |
99824461e
|
1029 1030 |
pr_err("Unable to initialize /proc/net/atm/lec "); |
dbee0d3f4
|
1031 1032 |
return -ENOMEM; } |
1da177e4c
|
1033 1034 1035 |
#endif register_atm_ioctl(&lane_ioctl_ops); |
36a9f77e5
|
1036 1037 |
pr_info("lec.c: initialized "); |
d44f77466
|
1038 |
return 0; |
1da177e4c
|
1039 1040 1041 1042 |
} static void __exit lane_module_cleanup(void) { |
d44f77466
|
1043 |
int i; |
1da177e4c
|
1044 |
|
9dd0f896d
|
1045 |
#ifdef CONFIG_PROC_FS |
1da177e4c
|
1046 |
remove_proc_entry("lec", atm_proc_root); |
9dd0f896d
|
1047 |
#endif |
1da177e4c
|
1048 1049 |
deregister_atm_ioctl(&lane_ioctl_ops); |
d44f77466
|
1050 1051 |
for (i = 0; i < MAX_LEC_ITF; i++) { if (dev_lec[i] != NULL) { |
1da177e4c
|
1052 |
unregister_netdev(dev_lec[i]); |
d44f77466
|
1053 1054 1055 1056 |
free_netdev(dev_lec[i]); dev_lec[i] = NULL; } } |
1da177e4c
|
1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 |
} module_init(lane_module_init); module_exit(lane_module_cleanup); /* * LANE2: 3.1.3, LE_RESOLVE.request * Non force allocates memory and fills in *tlvs, fills in *sizeoftlvs. * If sizeoftlvs == NULL the default TLVs associated with with this * lec will be used. * If dst_mac == NULL, targetless LE_ARP will be sent */ |
61c33e012
|
1069 |
static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force, |
d44f77466
|
1070 |
u8 **tlvs, u32 *sizeoftlvs) |
1da177e4c
|
1071 1072 |
{ unsigned long flags; |
524ad0a79
|
1073 |
struct lec_priv *priv = netdev_priv(dev); |
d44f77466
|
1074 1075 1076 |
struct lec_arp_table *table; struct sk_buff *skb; int retval; |
1da177e4c
|
1077 |
|
d44f77466
|
1078 |
if (force == 0) { |
1da177e4c
|
1079 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d44f77466
|
1080 |
table = lec_arp_find(priv, dst_mac); |
1da177e4c
|
1081 |
spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
d44f77466
|
1082 1083 |
if (table == NULL) return -1; |
2afe37cdf
|
1084 |
*tlvs = kmemdup(table->tlvs, table->sizeoftlvs, GFP_ATOMIC); |
d44f77466
|
1085 1086 |
if (*tlvs == NULL) return -1; |
d44f77466
|
1087 1088 1089 1090 |
*sizeoftlvs = table->sizeoftlvs; return 0; } |
1da177e4c
|
1091 1092 1093 |
if (sizeoftlvs == NULL) retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, NULL); |
d44f77466
|
1094 |
|
1da177e4c
|
1095 1096 1097 1098 1099 |
else { skb = alloc_skb(*sizeoftlvs, GFP_ATOMIC); if (skb == NULL) return -1; skb->len = *sizeoftlvs; |
27d7ff46a
|
1100 |
skb_copy_to_linear_data(skb, *tlvs, *sizeoftlvs); |
1da177e4c
|
1101 1102 |
retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, skb); } |
d44f77466
|
1103 1104 |
return retval; } |
1da177e4c
|
1105 1106 1107 1108 1109 1110 1111 1112 |
/* * LANE2: 3.1.4, LE_ASSOCIATE.request * Associate the *tlvs with the *lan_dst address. * Will overwrite any previous association * Returns 1 for success, 0 for failure (out of memory) * */ |
61c33e012
|
1113 1114 |
static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst, const u8 *tlvs, u32 sizeoftlvs) |
1da177e4c
|
1115 |
{ |
d44f77466
|
1116 1117 |
int retval; struct sk_buff *skb; |
524ad0a79
|
1118 |
struct lec_priv *priv = netdev_priv(dev); |
d44f77466
|
1119 |
|
150238ebb
|
1120 |
if (!ether_addr_equal(lan_dst, dev->dev_addr)) |
c48192a70
|
1121 |
return 0; /* not our mac address */ |
d44f77466
|
1122 1123 |
kfree(priv->tlvs); /* NULL if there was no previous association */ |
2afe37cdf
|
1124 |
priv->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL); |
d44f77466
|
1125 |
if (priv->tlvs == NULL) |
c48192a70
|
1126 |
return 0; |
d44f77466
|
1127 |
priv->sizeoftlvs = sizeoftlvs; |
d44f77466
|
1128 1129 1130 1131 1132 |
skb = alloc_skb(sizeoftlvs, GFP_ATOMIC); if (skb == NULL) return 0; skb->len = sizeoftlvs; |
27d7ff46a
|
1133 |
skb_copy_to_linear_data(skb, tlvs, sizeoftlvs); |
d44f77466
|
1134 1135 |
retval = send_to_lecd(priv, l_associate_req, NULL, NULL, skb); if (retval != 0) |
c48192a70
|
1136 1137 |
pr_info("lec.c: lane2_associate_req() failed "); |
d44f77466
|
1138 1139 1140 1141 |
/* * If the previous association has changed we must * somehow notify other LANE entities about the change */ |
c48192a70
|
1142 |
return 1; |
1da177e4c
|
1143 1144 1145 1146 1147 1148 |
} /* * LANE2: 3.1.5, LE_ASSOCIATE.indication * */ |
61c33e012
|
1149 1150 |
static void lane2_associate_ind(struct net_device *dev, const u8 *mac_addr, const u8 *tlvs, u32 sizeoftlvs) |
1da177e4c
|
1151 1152 |
{ #if 0 |
d44f77466
|
1153 |
int i = 0; |
1da177e4c
|
1154 |
#endif |
524ad0a79
|
1155 |
struct lec_priv *priv = netdev_priv(dev); |
d44f77466
|
1156 1157 1158 1159 1160 1161 1162 |
#if 0 /* * Why have the TLVs in LE_ARP entries * since we do not use them? When you * uncomment this code, make sure the * TLVs get freed when entry is killed */ struct lec_arp_table *entry = lec_arp_find(priv, mac_addr); |
1da177e4c
|
1163 |
|
d44f77466
|
1164 1165 |
if (entry == NULL) return; /* should not happen */ |
1da177e4c
|
1166 |
|
d44f77466
|
1167 |
kfree(entry->tlvs); |
1da177e4c
|
1168 |
|
2afe37cdf
|
1169 |
entry->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL); |
d44f77466
|
1170 1171 |
if (entry->tlvs == NULL) return; |
d44f77466
|
1172 |
entry->sizeoftlvs = sizeoftlvs; |
1da177e4c
|
1173 1174 |
#endif #if 0 |
c48192a70
|
1175 1176 1177 1178 |
pr_info(" "); pr_info("dump of tlvs, sizeoftlvs=%d ", sizeoftlvs); |
d44f77466
|
1179 |
while (i < sizeoftlvs) |
c48192a70
|
1180 |
pr_cont("%02x ", tlvs[i++]); |
d44f77466
|
1181 |
|
c48192a70
|
1182 1183 |
pr_cont(" "); |
1da177e4c
|
1184 |
#endif |
d44f77466
|
1185 1186 1187 1188 1189 |
/* tell MPOA about the TLVs we saw */ if (priv->lane2_ops && priv->lane2_ops->associate_indicator) { priv->lane2_ops->associate_indicator(dev, mac_addr, tlvs, sizeoftlvs); } |
1da177e4c
|
1190 1191 1192 1193 1194 1195 1196 |
} /* * Here starts what used to lec_arpc.c * * lec_arpc.c was added here when making * lane client modular. October 1997 |
1da177e4c
|
1197 1198 1199 |
*/ #include <linux/types.h> |
1da177e4c
|
1200 |
#include <linux/timer.h> |
c48192a70
|
1201 |
#include <linux/param.h> |
60063497a
|
1202 |
#include <linux/atomic.h> |
1da177e4c
|
1203 1204 |
#include <linux/inetdevice.h> #include <net/route.h> |
1da177e4c
|
1205 |
#if 0 |
c48192a70
|
1206 |
#define pr_debug(format, args...) |
1da177e4c
|
1207 |
/* |
99824461e
|
1208 |
#define pr_debug printk |
1da177e4c
|
1209 1210 1211 1212 1213 |
*/ #endif #define DEBUG_ARP_TABLE 0 #define LEC_ARP_REFRESH_INTERVAL (3*HZ) |
c4028958b
|
1214 |
static void lec_arp_check_expire(struct work_struct *work); |
ba4217935
|
1215 |
static void lec_arp_expire_arp(struct timer_list *t); |
1da177e4c
|
1216 |
|
f7d57453d
|
1217 |
/* |
1da177e4c
|
1218 1219 |
* Arp table funcs */ |
c48192a70
|
1220 |
#define HASH(ch) (ch & (LEC_ARP_TABLE_SIZE - 1)) |
1da177e4c
|
1221 1222 1223 1224 |
/* * Initialization of arp-cache */ |
1fa9961d6
|
1225 |
static void lec_arp_init(struct lec_priv *priv) |
1da177e4c
|
1226 |
{ |
1fa9961d6
|
1227 |
unsigned short i; |
1da177e4c
|
1228 |
|
c48192a70
|
1229 |
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) |
d0732f649
|
1230 |
INIT_HLIST_HEAD(&priv->lec_arp_tables[i]); |
f7d57453d
|
1231 1232 1233 |
INIT_HLIST_HEAD(&priv->lec_arp_empty_ones); INIT_HLIST_HEAD(&priv->lec_no_forward); INIT_HLIST_HEAD(&priv->mcast_fwds); |
1da177e4c
|
1234 |
spin_lock_init(&priv->lec_arp_lock); |
c4028958b
|
1235 |
INIT_DELAYED_WORK(&priv->lec_arp_work, lec_arp_check_expire); |
987e46bdf
|
1236 |
schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL); |
1da177e4c
|
1237 |
} |
1fa9961d6
|
1238 |
static void lec_arp_clear_vccs(struct lec_arp_table *entry) |
1da177e4c
|
1239 |
{ |
1fa9961d6
|
1240 |
if (entry->vcc) { |
1da177e4c
|
1241 1242 |
struct atm_vcc *vcc = entry->vcc; struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc); |
1fa9961d6
|
1243 |
struct net_device *dev = (struct net_device *)vcc->proto_data; |
1da177e4c
|
1244 |
|
1fa9961d6
|
1245 |
vcc->pop = vpriv->old_pop; |
1da177e4c
|
1246 1247 1248 1249 |
if (vpriv->xoff) netif_wake_queue(dev); kfree(vpriv); vcc->user_back = NULL; |
1fa9961d6
|
1250 |
vcc->push = entry->old_push; |
1da177e4c
|
1251 |
vcc_release_async(vcc, -EPIPE); |
d0732f649
|
1252 |
entry->vcc = NULL; |
1fa9961d6
|
1253 1254 1255 |
} if (entry->recv_vcc) { entry->recv_vcc->push = entry->old_recv_push; |
1da177e4c
|
1256 |
vcc_release_async(entry->recv_vcc, -EPIPE); |
1fa9961d6
|
1257 1258 |
entry->recv_vcc = NULL; } |
1da177e4c
|
1259 1260 1261 1262 1263 1264 |
} /* * Insert entry to lec_arp_table * LANE2: Add to the end of the list to satisfy 8.1.13 */ |
1fa9961d6
|
1265 |
static inline void |
d0732f649
|
1266 |
lec_arp_add(struct lec_priv *priv, struct lec_arp_table *entry) |
1da177e4c
|
1267 |
{ |
d0732f649
|
1268 |
struct hlist_head *tmp; |
1fa9961d6
|
1269 |
|
d0732f649
|
1270 1271 |
tmp = &priv->lec_arp_tables[HASH(entry->mac_addr[ETH_ALEN - 1])]; hlist_add_head(&entry->next, tmp); |
1fa9961d6
|
1272 |
|
99824461e
|
1273 1274 |
pr_debug("Added entry:%pM ", entry->mac_addr); |
1da177e4c
|
1275 1276 1277 1278 1279 |
} /* * Remove entry from lec_arp_table */ |
1fa9961d6
|
1280 1281 |
static int lec_arp_remove(struct lec_priv *priv, struct lec_arp_table *to_remove) |
1da177e4c
|
1282 |
{ |
d0732f649
|
1283 1284 |
struct lec_arp_table *entry; int i, remove_vcc = 1; |
1fa9961d6
|
1285 |
|
c48192a70
|
1286 |
if (!to_remove) |
1fa9961d6
|
1287 |
return -1; |
d0732f649
|
1288 1289 |
hlist_del(&to_remove->next); |
1fa9961d6
|
1290 |
del_timer(&to_remove->timer); |
c48192a70
|
1291 1292 1293 1294 |
/* * If this is the only MAC connected to this VCC, * also tear down the VCC */ |
1fa9961d6
|
1295 1296 1297 1298 |
if (to_remove->status >= ESI_FLUSH_PENDING) { /* * ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT */ |
d0732f649
|
1299 |
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
b67bfe0d4
|
1300 |
hlist_for_each_entry(entry, |
c48192a70
|
1301 |
&priv->lec_arp_tables[i], next) { |
d0732f649
|
1302 1303 |
if (memcmp(to_remove->atm_addr, entry->atm_addr, ATM_ESA_LEN) == 0) { |
1fa9961d6
|
1304 1305 1306 1307 1308 1309 1310 1311 1312 |
remove_vcc = 0; break; } } } if (remove_vcc) lec_arp_clear_vccs(to_remove); } skb_queue_purge(&to_remove->tx_wait); /* FIXME: good place for this? */ |
99824461e
|
1313 1314 |
pr_debug("Removed entry:%pM ", to_remove->mac_addr); |
1fa9961d6
|
1315 |
return 0; |
1da177e4c
|
1316 1317 1318 |
} #if DEBUG_ARP_TABLE |
36cbd3dcc
|
1319 |
static const char *get_status_string(unsigned char st) |
1da177e4c
|
1320 |
{ |
1fa9961d6
|
1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 |
switch (st) { case ESI_UNKNOWN: return "ESI_UNKNOWN"; case ESI_ARP_PENDING: return "ESI_ARP_PENDING"; case ESI_VC_PENDING: return "ESI_VC_PENDING"; case ESI_FLUSH_PENDING: return "ESI_FLUSH_PENDING"; case ESI_FORWARD_DIRECT: return "ESI_FORWARD_DIRECT"; |
1fa9961d6
|
1332 |
} |
c48192a70
|
1333 |
return "<UNKNOWN>"; |
1da177e4c
|
1334 |
} |
1da177e4c
|
1335 |
|
1fa9961d6
|
1336 |
static void dump_arp_table(struct lec_priv *priv) |
1da177e4c
|
1337 |
{ |
1fa9961d6
|
1338 |
struct lec_arp_table *rulla; |
d0732f649
|
1339 1340 |
char buf[256]; int i, j, offset; |
1fa9961d6
|
1341 |
|
c48192a70
|
1342 1343 |
pr_info("Dump %p: ", priv); |
1fa9961d6
|
1344 |
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
b67bfe0d4
|
1345 |
hlist_for_each_entry(rulla, |
c48192a70
|
1346 |
&priv->lec_arp_tables[i], next) { |
d0732f649
|
1347 1348 1349 |
offset = 0; offset += sprintf(buf, "%d: %p ", i, rulla); |
c48192a70
|
1350 1351 1352 |
offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr); offset += sprintf(buf + offset, " Atm:"); |
1fa9961d6
|
1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 |
for (j = 0; j < ATM_ESA_LEN; j++) { offset += sprintf(buf + offset, "%2.2x ", rulla->atm_addr[j] & 0xff); } offset += sprintf(buf + offset, "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", rulla->vcc ? rulla->vcc->vpi : 0, rulla->vcc ? rulla->vcc->vci : 0, rulla->recv_vcc ? rulla->recv_vcc-> vpi : 0, rulla->recv_vcc ? rulla->recv_vcc-> vci : 0, rulla->last_used, rulla->timestamp, rulla->no_tries); offset += sprintf(buf + offset, "Flags:%x, Packets_flooded:%x, Status: %s ", rulla->flags, rulla->packets_flooded, get_status_string(rulla->status)); |
c48192a70
|
1372 1373 |
pr_info("%s ", buf); |
1fa9961d6
|
1374 |
} |
1fa9961d6
|
1375 |
} |
d0732f649
|
1376 1377 |
if (!hlist_empty(&priv->lec_no_forward)) |
c48192a70
|
1378 1379 |
pr_info("No forward "); |
b67bfe0d4
|
1380 |
hlist_for_each_entry(rulla, &priv->lec_no_forward, next) { |
1fa9961d6
|
1381 |
offset = 0; |
c48192a70
|
1382 1383 |
offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr); offset += sprintf(buf + offset, " Atm:"); |
1fa9961d6
|
1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 |
for (j = 0; j < ATM_ESA_LEN; j++) { offset += sprintf(buf + offset, "%2.2x ", rulla->atm_addr[j] & 0xff); } offset += sprintf(buf + offset, "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", rulla->vcc ? rulla->vcc->vpi : 0, rulla->vcc ? rulla->vcc->vci : 0, rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, rulla->recv_vcc ? rulla->recv_vcc->vci : 0, rulla->last_used, rulla->timestamp, rulla->no_tries); offset += sprintf(buf + offset, "Flags:%x, Packets_flooded:%x, Status: %s ", rulla->flags, rulla->packets_flooded, get_status_string(rulla->status)); |
c48192a70
|
1400 1401 |
pr_info("%s ", buf); |
1fa9961d6
|
1402 |
} |
d0732f649
|
1403 1404 |
if (!hlist_empty(&priv->lec_arp_empty_ones)) |
c48192a70
|
1405 1406 |
pr_info("Empty ones "); |
b67bfe0d4
|
1407 |
hlist_for_each_entry(rulla, &priv->lec_arp_empty_ones, next) { |
1fa9961d6
|
1408 |
offset = 0; |
c48192a70
|
1409 1410 |
offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr); offset += sprintf(buf + offset, " Atm:"); |
1fa9961d6
|
1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 |
for (j = 0; j < ATM_ESA_LEN; j++) { offset += sprintf(buf + offset, "%2.2x ", rulla->atm_addr[j] & 0xff); } offset += sprintf(buf + offset, "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", rulla->vcc ? rulla->vcc->vpi : 0, rulla->vcc ? rulla->vcc->vci : 0, rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, rulla->recv_vcc ? rulla->recv_vcc->vci : 0, rulla->last_used, rulla->timestamp, rulla->no_tries); offset += sprintf(buf + offset, "Flags:%x, Packets_flooded:%x, Status: %s ", rulla->flags, rulla->packets_flooded, get_status_string(rulla->status)); |
c48192a70
|
1427 |
pr_info("%s", buf); |
1fa9961d6
|
1428 |
} |
d0732f649
|
1429 |
if (!hlist_empty(&priv->mcast_fwds)) |
c48192a70
|
1430 1431 |
pr_info("Multicast Forward VCCs "); |
b67bfe0d4
|
1432 |
hlist_for_each_entry(rulla, &priv->mcast_fwds, next) { |
1fa9961d6
|
1433 |
offset = 0; |
c48192a70
|
1434 1435 |
offset += sprintf(buf + offset, "Mac: %pM", rulla->mac_addr); offset += sprintf(buf + offset, " Atm:"); |
1fa9961d6
|
1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 |
for (j = 0; j < ATM_ESA_LEN; j++) { offset += sprintf(buf + offset, "%2.2x ", rulla->atm_addr[j] & 0xff); } offset += sprintf(buf + offset, "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ", rulla->vcc ? rulla->vcc->vpi : 0, rulla->vcc ? rulla->vcc->vci : 0, rulla->recv_vcc ? rulla->recv_vcc->vpi : 0, rulla->recv_vcc ? rulla->recv_vcc->vci : 0, rulla->last_used, rulla->timestamp, rulla->no_tries); offset += sprintf(buf + offset, "Flags:%x, Packets_flooded:%x, Status: %s ", rulla->flags, rulla->packets_flooded, get_status_string(rulla->status)); |
c48192a70
|
1452 1453 |
pr_info("%s ", buf); |
1fa9961d6
|
1454 |
} |
1da177e4c
|
1455 |
|
1da177e4c
|
1456 |
} |
d0732f649
|
1457 1458 1459 |
#else #define dump_arp_table(priv) do { } while (0) #endif |
1da177e4c
|
1460 1461 1462 1463 |
/* * Destruction of arp-cache */ |
1fa9961d6
|
1464 |
static void lec_arp_destroy(struct lec_priv *priv) |
1da177e4c
|
1465 1466 |
{ unsigned long flags; |
b67bfe0d4
|
1467 |
struct hlist_node *next; |
d0732f649
|
1468 |
struct lec_arp_table *entry; |
1fa9961d6
|
1469 |
int i; |
afe2c511f
|
1470 |
cancel_delayed_work_sync(&priv->lec_arp_work); |
1da177e4c
|
1471 |
|
1fa9961d6
|
1472 1473 1474 |
/* * Remove all entries */ |
1da177e4c
|
1475 1476 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d6
|
1477 |
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
b67bfe0d4
|
1478 |
hlist_for_each_entry_safe(entry, next, |
c48192a70
|
1479 |
&priv->lec_arp_tables[i], next) { |
1fa9961d6
|
1480 |
lec_arp_remove(priv, entry); |
33a9c2d4b
|
1481 |
lec_arp_put(entry); |
1fa9961d6
|
1482 |
} |
d0732f649
|
1483 |
INIT_HLIST_HEAD(&priv->lec_arp_tables[i]); |
1fa9961d6
|
1484 |
} |
d0732f649
|
1485 |
|
b67bfe0d4
|
1486 |
hlist_for_each_entry_safe(entry, next, |
c48192a70
|
1487 |
&priv->lec_arp_empty_ones, next) { |
1fa9961d6
|
1488 1489 |
del_timer_sync(&entry->timer); lec_arp_clear_vccs(entry); |
d0732f649
|
1490 |
hlist_del(&entry->next); |
33a9c2d4b
|
1491 |
lec_arp_put(entry); |
1fa9961d6
|
1492 |
} |
d0732f649
|
1493 |
INIT_HLIST_HEAD(&priv->lec_arp_empty_ones); |
b67bfe0d4
|
1494 |
hlist_for_each_entry_safe(entry, next, |
c48192a70
|
1495 |
&priv->lec_no_forward, next) { |
1fa9961d6
|
1496 1497 |
del_timer_sync(&entry->timer); lec_arp_clear_vccs(entry); |
d0732f649
|
1498 |
hlist_del(&entry->next); |
33a9c2d4b
|
1499 |
lec_arp_put(entry); |
1fa9961d6
|
1500 |
} |
d0732f649
|
1501 |
INIT_HLIST_HEAD(&priv->lec_no_forward); |
b67bfe0d4
|
1502 |
hlist_for_each_entry_safe(entry, next, &priv->mcast_fwds, next) { |
1fa9961d6
|
1503 1504 |
/* No timer, LANEv2 7.1.20 and 2.3.5.3 */ lec_arp_clear_vccs(entry); |
d0732f649
|
1505 |
hlist_del(&entry->next); |
33a9c2d4b
|
1506 |
lec_arp_put(entry); |
1fa9961d6
|
1507 |
} |
d0732f649
|
1508 |
INIT_HLIST_HEAD(&priv->mcast_fwds); |
1fa9961d6
|
1509 |
priv->mcast_vcc = NULL; |
1da177e4c
|
1510 1511 |
spin_unlock_irqrestore(&priv->lec_arp_lock, flags); } |
f7d57453d
|
1512 |
/* |
1da177e4c
|
1513 1514 |
* Find entry by mac_address */ |
1fa9961d6
|
1515 |
static struct lec_arp_table *lec_arp_find(struct lec_priv *priv, |
61c33e012
|
1516 |
const unsigned char *mac_addr) |
1da177e4c
|
1517 |
{ |
d0732f649
|
1518 1519 |
struct hlist_head *head; struct lec_arp_table *entry; |
1fa9961d6
|
1520 |
|
99824461e
|
1521 1522 |
pr_debug("%pM ", mac_addr); |
1fa9961d6
|
1523 |
|
d0732f649
|
1524 |
head = &priv->lec_arp_tables[HASH(mac_addr[ETH_ALEN - 1])]; |
b67bfe0d4
|
1525 |
hlist_for_each_entry(entry, head, next) { |
150238ebb
|
1526 |
if (ether_addr_equal(mac_addr, entry->mac_addr)) |
d0732f649
|
1527 |
return entry; |
1fa9961d6
|
1528 1529 |
} return NULL; |
1da177e4c
|
1530 |
} |
1fa9961d6
|
1531 |
static struct lec_arp_table *make_entry(struct lec_priv *priv, |
61c33e012
|
1532 |
const unsigned char *mac_addr) |
1da177e4c
|
1533 |
{ |
1fa9961d6
|
1534 1535 1536 1537 |
struct lec_arp_table *to_return; to_return = kzalloc(sizeof(struct lec_arp_table), GFP_ATOMIC); if (!to_return) { |
c48192a70
|
1538 1539 |
pr_info("LEC: Arp entry kmalloc failed "); |
1fa9961d6
|
1540 1541 |
return NULL; } |
116e853f7
|
1542 |
ether_addr_copy(to_return->mac_addr, mac_addr); |
d0732f649
|
1543 |
INIT_HLIST_NODE(&to_return->next); |
ba4217935
|
1544 |
timer_setup(&to_return->timer, lec_arp_expire_arp, 0); |
1fa9961d6
|
1545 1546 1547 |
to_return->last_used = jiffies; to_return->priv = priv; skb_queue_head_init(&to_return->tx_wait); |
788936641
|
1548 |
refcount_set(&to_return->usage, 1); |
1fa9961d6
|
1549 |
return to_return; |
1da177e4c
|
1550 |
} |
1fa9961d6
|
1551 |
/* Arp sent timer expired */ |
ba4217935
|
1552 |
static void lec_arp_expire_arp(struct timer_list *t) |
1da177e4c
|
1553 |
{ |
1fa9961d6
|
1554 |
struct lec_arp_table *entry; |
ba4217935
|
1555 |
entry = from_timer(entry, t, timer); |
1fa9961d6
|
1556 |
|
99824461e
|
1557 1558 |
pr_debug(" "); |
1fa9961d6
|
1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 |
if (entry->status == ESI_ARP_PENDING) { if (entry->no_tries <= entry->priv->max_retry_count) { if (entry->is_rdesc) send_to_lecd(entry->priv, l_rdesc_arp_xmt, entry->mac_addr, NULL, NULL); else send_to_lecd(entry->priv, l_arp_xmt, entry->mac_addr, NULL, NULL); entry->no_tries++; } mod_timer(&entry->timer, jiffies + (1 * HZ)); } |
1da177e4c
|
1571 |
} |
1fa9961d6
|
1572 |
/* Unknown/unused vcc expire, remove associated entry */ |
ba4217935
|
1573 |
static void lec_arp_expire_vcc(struct timer_list *t) |
1da177e4c
|
1574 1575 |
{ unsigned long flags; |
ba4217935
|
1576 |
struct lec_arp_table *to_remove = from_timer(to_remove, t, timer); |
e3192690a
|
1577 |
struct lec_priv *priv = to_remove->priv; |
1da177e4c
|
1578 |
|
1fa9961d6
|
1579 |
del_timer(&to_remove->timer); |
1da177e4c
|
1580 |
|
99824461e
|
1581 1582 1583 1584 1585 |
pr_debug("%p %p: vpi:%d vci:%d ", to_remove, priv, to_remove->vcc ? to_remove->recv_vcc->vpi : 0, to_remove->vcc ? to_remove->recv_vcc->vci : 0); |
1da177e4c
|
1586 1587 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d0732f649
|
1588 |
hlist_del(&to_remove->next); |
1da177e4c
|
1589 |
spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d6
|
1590 |
lec_arp_clear_vccs(to_remove); |
33a9c2d4b
|
1591 |
lec_arp_put(to_remove); |
1da177e4c
|
1592 |
} |
b4c84ec0f
|
1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 |
static bool __lec_arp_check_expire(struct lec_arp_table *entry, unsigned long now, struct lec_priv *priv) { unsigned long time_to_check; if ((entry->flags) & LEC_REMOTE_FLAG && priv->topology_change) time_to_check = priv->forward_delay_time; else time_to_check = priv->aging_time; pr_debug("About to expire: %lx - %lx > %lx ", now, entry->last_used, time_to_check); if (time_after(now, entry->last_used + time_to_check) && !(entry->flags & LEC_PERMANENT_FLAG) && !(entry->mac_addr[0] & 0x01)) { /* LANE2: 7.1.20 */ /* Remove entry */ pr_debug("Entry timed out "); lec_arp_remove(priv, entry); lec_arp_put(entry); } else { /* Something else */ if ((entry->status == ESI_VC_PENDING || entry->status == ESI_ARP_PENDING) && time_after_eq(now, entry->timestamp + priv->max_unknown_frame_time)) { entry->timestamp = jiffies; entry->packets_flooded = 0; if (entry->status == ESI_VC_PENDING) send_to_lecd(priv, l_svc_setup, entry->mac_addr, entry->atm_addr, NULL); } if (entry->status == ESI_FLUSH_PENDING && time_after_eq(now, entry->timestamp + priv->path_switching_delay)) { lec_arp_hold(entry); return true; } } return false; } |
1da177e4c
|
1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 |
/* * Expire entries. * 1. Re-set timer * 2. For each entry, delete entries that have aged past the age limit. * 3. For each entry, depending on the status of the entry, perform * the following maintenance. * a. If status is ESI_VC_PENDING or ESI_ARP_PENDING then if the * tick_count is above the max_unknown_frame_time, clear * the tick_count to zero and clear the packets_flooded counter * to zero. This supports the packet rate limit per address * while flooding unknowns. * b. If the status is ESI_FLUSH_PENDING and the tick_count is greater * than or equal to the path_switching_delay, change the status * to ESI_FORWARD_DIRECT. This causes the flush period to end * regardless of the progress of the flush protocol. */ |
c4028958b
|
1655 |
static void lec_arp_check_expire(struct work_struct *work) |
1da177e4c
|
1656 1657 |
{ unsigned long flags; |
c4028958b
|
1658 1659 |
struct lec_priv *priv = container_of(work, struct lec_priv, lec_arp_work.work); |
b67bfe0d4
|
1660 |
struct hlist_node *next; |
d0732f649
|
1661 |
struct lec_arp_table *entry; |
1fa9961d6
|
1662 |
unsigned long now; |
1fa9961d6
|
1663 |
int i; |
99824461e
|
1664 1665 |
pr_debug("%p ", priv); |
1da177e4c
|
1666 |
now = jiffies; |
6656e3c4c
|
1667 |
restart: |
1da177e4c
|
1668 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d6
|
1669 |
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
b67bfe0d4
|
1670 |
hlist_for_each_entry_safe(entry, next, |
c48192a70
|
1671 |
&priv->lec_arp_tables[i], next) { |
b4c84ec0f
|
1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 |
if (__lec_arp_check_expire(entry, now, priv)) { struct sk_buff *skb; struct atm_vcc *vcc = entry->vcc; spin_unlock_irqrestore(&priv->lec_arp_lock, flags); while ((skb = skb_dequeue(&entry->tx_wait))) lec_send(vcc, skb); entry->last_used = jiffies; entry->status = ESI_FORWARD_DIRECT; |
33a9c2d4b
|
1682 |
lec_arp_put(entry); |
b4c84ec0f
|
1683 1684 |
goto restart; |
1da177e4c
|
1685 1686 1687 1688 |
} } } spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
987e46bdf
|
1689 |
schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL); |
1da177e4c
|
1690 |
} |
1fa9961d6
|
1691 |
|
1da177e4c
|
1692 1693 |
/* * Try to find vcc where mac_address is attached. |
f7d57453d
|
1694 |
* |
1da177e4c
|
1695 |
*/ |
1fa9961d6
|
1696 |
static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv, |
c48192a70
|
1697 1698 |
const unsigned char *mac_to_find, int is_rdesc, |
1fa9961d6
|
1699 |
struct lec_arp_table **ret_entry) |
1da177e4c
|
1700 1701 |
{ unsigned long flags; |
1fa9961d6
|
1702 |
struct lec_arp_table *entry; |
1da177e4c
|
1703 |
struct atm_vcc *found; |
1fa9961d6
|
1704 1705 1706 1707 |
if (mac_to_find[0] & 0x01) { switch (priv->lane_version) { case 1: return priv->mcast_vcc; |
1fa9961d6
|
1708 |
case 2: /* LANE2 wants arp for multicast addresses */ |
150238ebb
|
1709 |
if (ether_addr_equal(mac_to_find, bus_mac)) |
1fa9961d6
|
1710 1711 1712 1713 1714 1715 |
return priv->mcast_vcc; break; default: break; } } |
1da177e4c
|
1716 1717 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d6
|
1718 1719 1720 1721 1722 1723 |
entry = lec_arp_find(priv, mac_to_find); if (entry) { if (entry->status == ESI_FORWARD_DIRECT) { /* Connection Ok */ entry->last_used = jiffies; |
6656e3c4c
|
1724 |
lec_arp_hold(entry); |
1fa9961d6
|
1725 1726 |
*ret_entry = entry; found = entry->vcc; |
1da177e4c
|
1727 |
goto out; |
1fa9961d6
|
1728 1729 1730 |
} /* * If the LE_ARP cache entry is still pending, reset count to 0 |
75b895c15
|
1731 1732 |
* so another LE_ARP request can be made for this frame. */ |
c48192a70
|
1733 |
if (entry->status == ESI_ARP_PENDING) |
75b895c15
|
1734 |
entry->no_tries = 0; |
1fa9961d6
|
1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 |
/* * Data direct VC not yet set up, check to see if the unknown * frame count is greater than the limit. If the limit has * not been reached, allow the caller to send packet to * BUS. */ if (entry->status != ESI_FLUSH_PENDING && entry->packets_flooded < priv->maximum_unknown_frame_count) { entry->packets_flooded++; |
99824461e
|
1745 1746 |
pr_debug("Flooding.. "); |
1fa9961d6
|
1747 |
found = priv->mcast_vcc; |
1da177e4c
|
1748 |
goto out; |
1fa9961d6
|
1749 1750 1751 |
} /* * We got here because entry->status == ESI_FLUSH_PENDING |
1da177e4c
|
1752 1753 1754 |
* or BUS flood limit was reached for an entry which is * in ESI_ARP_PENDING or ESI_VC_PENDING state. */ |
6656e3c4c
|
1755 |
lec_arp_hold(entry); |
1fa9961d6
|
1756 |
*ret_entry = entry; |
99824461e
|
1757 1758 1759 |
pr_debug("entry->status %d entry->vcc %p ", entry->status, entry->vcc); |
1fa9961d6
|
1760 1761 1762 1763 |
found = NULL; } else { /* No matching entry was found */ entry = make_entry(priv, mac_to_find); |
99824461e
|
1764 1765 |
pr_debug("Making entry "); |
1fa9961d6
|
1766 1767 |
if (!entry) { found = priv->mcast_vcc; |
1da177e4c
|
1768 |
goto out; |
1fa9961d6
|
1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 |
} lec_arp_add(priv, entry); /* We want arp-request(s) to be sent */ entry->packets_flooded = 1; entry->status = ESI_ARP_PENDING; entry->no_tries = 1; entry->last_used = entry->timestamp = jiffies; entry->is_rdesc = is_rdesc; if (entry->is_rdesc) send_to_lecd(priv, l_rdesc_arp_xmt, mac_to_find, NULL, NULL); else send_to_lecd(priv, l_arp_xmt, mac_to_find, NULL, NULL); entry->timer.expires = jiffies + (1 * HZ); |
841b86f32
|
1783 |
entry->timer.function = lec_arp_expire_arp; |
1fa9961d6
|
1784 1785 1786 |
add_timer(&entry->timer); found = priv->mcast_vcc; } |
1da177e4c
|
1787 1788 1789 1790 1791 1792 1793 |
out: spin_unlock_irqrestore(&priv->lec_arp_lock, flags); return found; } static int |
61c33e012
|
1794 |
lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr, |
1fa9961d6
|
1795 |
unsigned long permanent) |
1da177e4c
|
1796 1797 |
{ unsigned long flags; |
b67bfe0d4
|
1798 |
struct hlist_node *next; |
d0732f649
|
1799 |
struct lec_arp_table *entry; |
1fa9961d6
|
1800 |
int i; |
1da177e4c
|
1801 |
|
99824461e
|
1802 1803 |
pr_debug(" "); |
1da177e4c
|
1804 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d6
|
1805 |
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
b67bfe0d4
|
1806 |
hlist_for_each_entry_safe(entry, next, |
c48192a70
|
1807 1808 1809 1810 |
&priv->lec_arp_tables[i], next) { if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN) && (permanent || !(entry->flags & LEC_PERMANENT_FLAG))) { |
1da177e4c
|
1811 |
lec_arp_remove(priv, entry); |
33a9c2d4b
|
1812 |
lec_arp_put(entry); |
1fa9961d6
|
1813 |
} |
1da177e4c
|
1814 |
spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d6
|
1815 1816 1817 |
return 0; } } |
1da177e4c
|
1818 |
spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d6
|
1819 |
return -1; |
1da177e4c
|
1820 1821 1822 |
} /* |
f7d57453d
|
1823 |
* Notifies: Response to arp_request (atm_addr != NULL) |
1da177e4c
|
1824 1825 |
*/ static void |
61c33e012
|
1826 1827 |
lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr, const unsigned char *atm_addr, unsigned long remoteflag, |
1fa9961d6
|
1828 |
unsigned int targetless_le_arp) |
1da177e4c
|
1829 1830 |
{ unsigned long flags; |
b67bfe0d4
|
1831 |
struct hlist_node *next; |
1fa9961d6
|
1832 1833 |
struct lec_arp_table *entry, *tmp; int i; |
1da177e4c
|
1834 |
|
99824461e
|
1835 1836 1837 |
pr_debug("%smac:%pM ", (targetless_le_arp) ? "targetless " : "", mac_addr); |
1da177e4c
|
1838 1839 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d6
|
1840 1841 1842 1843 1844 1845 |
entry = lec_arp_find(priv, mac_addr); if (entry == NULL && targetless_le_arp) goto out; /* * LANE2: ignore targetless LE_ARPs for which * we have no entry in the cache. 7.1.30 */ |
d0732f649
|
1846 |
if (!hlist_empty(&priv->lec_arp_empty_ones)) { |
b67bfe0d4
|
1847 |
hlist_for_each_entry_safe(entry, next, |
c48192a70
|
1848 |
&priv->lec_arp_empty_ones, next) { |
d0732f649
|
1849 1850 |
if (memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN) == 0) { hlist_del(&entry->next); |
1fa9961d6
|
1851 |
del_timer(&entry->timer); |
d0732f649
|
1852 1853 1854 1855 1856 1857 1858 1859 1860 |
tmp = lec_arp_find(priv, mac_addr); if (tmp) { del_timer(&tmp->timer); tmp->status = ESI_FORWARD_DIRECT; memcpy(tmp->atm_addr, atm_addr, ATM_ESA_LEN); tmp->vcc = entry->vcc; tmp->old_push = entry->old_push; tmp->last_used = jiffies; del_timer(&entry->timer); |
33a9c2d4b
|
1861 |
lec_arp_put(entry); |
d0732f649
|
1862 1863 1864 |
entry = tmp; } else { entry->status = ESI_FORWARD_DIRECT; |
116e853f7
|
1865 1866 |
ether_addr_copy(entry->mac_addr, mac_addr); |
d0732f649
|
1867 1868 1869 1870 1871 1872 1873 |
entry->last_used = jiffies; lec_arp_add(priv, entry); } if (remoteflag) entry->flags |= LEC_REMOTE_FLAG; else entry->flags &= ~LEC_REMOTE_FLAG; |
522400623
|
1874 1875 |
pr_debug("After update "); |
d0732f649
|
1876 1877 |
dump_arp_table(priv); goto out; |
1fa9961d6
|
1878 |
} |
1fa9961d6
|
1879 1880 |
} } |
d0732f649
|
1881 |
|
1fa9961d6
|
1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 |
entry = lec_arp_find(priv, mac_addr); if (!entry) { entry = make_entry(priv, mac_addr); if (!entry) goto out; entry->status = ESI_UNKNOWN; lec_arp_add(priv, entry); /* Temporary, changes before end of function */ } memcpy(entry->atm_addr, atm_addr, ATM_ESA_LEN); del_timer(&entry->timer); for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
b67bfe0d4
|
1894 |
hlist_for_each_entry(tmp, |
c48192a70
|
1895 |
&priv->lec_arp_tables[i], next) { |
1fa9961d6
|
1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 |
if (entry != tmp && !memcmp(tmp->atm_addr, atm_addr, ATM_ESA_LEN)) { /* Vcc to this host exists */ if (tmp->status > ESI_VC_PENDING) { /* * ESI_FLUSH_PENDING, * ESI_FORWARD_DIRECT */ entry->vcc = tmp->vcc; entry->old_push = tmp->old_push; } entry->status = tmp->status; break; } } } if (remoteflag) entry->flags |= LEC_REMOTE_FLAG; else entry->flags &= ~LEC_REMOTE_FLAG; if (entry->status == ESI_ARP_PENDING || entry->status == ESI_UNKNOWN) { entry->status = ESI_VC_PENDING; |
d0732f649
|
1918 |
send_to_lecd(priv, l_svc_setup, entry->mac_addr, atm_addr, NULL); |
1fa9961d6
|
1919 |
} |
522400623
|
1920 1921 |
pr_debug("After update2 "); |
1fa9961d6
|
1922 |
dump_arp_table(priv); |
1da177e4c
|
1923 1924 1925 1926 1927 |
out: spin_unlock_irqrestore(&priv->lec_arp_lock, flags); } /* |
f7d57453d
|
1928 |
* Notifies: Vcc setup ready |
1da177e4c
|
1929 1930 |
*/ static void |
61c33e012
|
1931 |
lec_vcc_added(struct lec_priv *priv, const struct atmlec_ioc *ioc_data, |
1fa9961d6
|
1932 1933 |
struct atm_vcc *vcc, void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb)) |
1da177e4c
|
1934 1935 |
{ unsigned long flags; |
1fa9961d6
|
1936 1937 |
struct lec_arp_table *entry; int i, found_entry = 0; |
1da177e4c
|
1938 1939 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
c48192a70
|
1940 |
/* Vcc for Multicast Forward. No timer, LANEv2 7.1.20 and 2.3.5.3 */ |
1fa9961d6
|
1941 |
if (ioc_data->receive == 2) { |
522400623
|
1942 1943 |
pr_debug("LEC_ARP: Attaching mcast forward "); |
1da177e4c
|
1944 |
#if 0 |
1fa9961d6
|
1945 1946 |
entry = lec_arp_find(priv, bus_mac); if (!entry) { |
c48192a70
|
1947 1948 |
pr_info("LEC_ARP: Multicast entry not found! "); |
1da177e4c
|
1949 |
goto out; |
1fa9961d6
|
1950 1951 1952 1953 |
} memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); entry->recv_vcc = vcc; entry->old_recv_push = old_push; |
1da177e4c
|
1954 |
#endif |
1fa9961d6
|
1955 1956 |
entry = make_entry(priv, bus_mac); if (entry == NULL) |
1da177e4c
|
1957 |
goto out; |
1fa9961d6
|
1958 1959 1960 1961 |
del_timer(&entry->timer); memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); entry->recv_vcc = vcc; entry->old_recv_push = old_push; |
d0732f649
|
1962 |
hlist_add_head(&entry->next, &priv->mcast_fwds); |
1fa9961d6
|
1963 1964 1965 1966 1967 1968 |
goto out; } else if (ioc_data->receive == 1) { /* * Vcc which we don't want to make default vcc, * attach it anyway. */ |
99824461e
|
1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 |
pr_debug("LEC_ARP:Attaching data direct, not default: %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 ", ioc_data->atm_addr[0], ioc_data->atm_addr[1], ioc_data->atm_addr[2], ioc_data->atm_addr[3], ioc_data->atm_addr[4], ioc_data->atm_addr[5], ioc_data->atm_addr[6], ioc_data->atm_addr[7], ioc_data->atm_addr[8], ioc_data->atm_addr[9], ioc_data->atm_addr[10], ioc_data->atm_addr[11], ioc_data->atm_addr[12], ioc_data->atm_addr[13], ioc_data->atm_addr[14], ioc_data->atm_addr[15], ioc_data->atm_addr[16], ioc_data->atm_addr[17], ioc_data->atm_addr[18], ioc_data->atm_addr[19]); |
1fa9961d6
|
1981 1982 |
entry = make_entry(priv, bus_mac); if (entry == NULL) |
1da177e4c
|
1983 |
goto out; |
1fa9961d6
|
1984 |
memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); |
19ffa562e
|
1985 |
eth_zero_addr(entry->mac_addr); |
1fa9961d6
|
1986 1987 1988 1989 |
entry->recv_vcc = vcc; entry->old_recv_push = old_push; entry->status = ESI_UNKNOWN; entry->timer.expires = jiffies + priv->vcc_timeout_period; |
841b86f32
|
1990 |
entry->timer.function = lec_arp_expire_vcc; |
d0732f649
|
1991 |
hlist_add_head(&entry->next, &priv->lec_no_forward); |
1fa9961d6
|
1992 |
add_timer(&entry->timer); |
1da177e4c
|
1993 1994 |
dump_arp_table(priv); goto out; |
1fa9961d6
|
1995 |
} |
99824461e
|
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 |
pr_debug("LEC_ARP:Attaching data direct, default: %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 ", ioc_data->atm_addr[0], ioc_data->atm_addr[1], ioc_data->atm_addr[2], ioc_data->atm_addr[3], ioc_data->atm_addr[4], ioc_data->atm_addr[5], ioc_data->atm_addr[6], ioc_data->atm_addr[7], ioc_data->atm_addr[8], ioc_data->atm_addr[9], ioc_data->atm_addr[10], ioc_data->atm_addr[11], ioc_data->atm_addr[12], ioc_data->atm_addr[13], ioc_data->atm_addr[14], ioc_data->atm_addr[15], ioc_data->atm_addr[16], ioc_data->atm_addr[17], ioc_data->atm_addr[18], ioc_data->atm_addr[19]); |
1fa9961d6
|
2008 |
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
b67bfe0d4
|
2009 |
hlist_for_each_entry(entry, |
c48192a70
|
2010 |
&priv->lec_arp_tables[i], next) { |
1fa9961d6
|
2011 2012 2013 |
if (memcmp (ioc_data->atm_addr, entry->atm_addr, ATM_ESA_LEN) == 0) { |
522400623
|
2014 2015 2016 2017 |
pr_debug("LEC_ARP: Attaching data direct "); pr_debug("Currently -> Vcc: %d, Rvcc:%d ", |
99824461e
|
2018 2019 2020 |
entry->vcc ? entry->vcc->vci : 0, entry->recv_vcc ? entry->recv_vcc-> vci : 0); |
1fa9961d6
|
2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 |
found_entry = 1; del_timer(&entry->timer); entry->vcc = vcc; entry->old_push = old_push; if (entry->status == ESI_VC_PENDING) { if (priv->maximum_unknown_frame_count == 0) entry->status = ESI_FORWARD_DIRECT; else { entry->timestamp = jiffies; entry->status = ESI_FLUSH_PENDING; |
1da177e4c
|
2034 |
#if 0 |
1fa9961d6
|
2035 2036 2037 2038 |
send_to_lecd(priv, l_flush_xmt, NULL, entry->atm_addr, NULL); |
1da177e4c
|
2039 |
#endif |
1fa9961d6
|
2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 |
} } else { /* * They were forming a connection * to us, and we to them. Our * ATM address is numerically lower * than theirs, so we make connection * we formed into default VCC (8.1.11). * Connection they made gets torn * down. This might confuse some * clients. Can be changed if * someone reports trouble... */ ; } } } } if (found_entry) { |
522400623
|
2059 2060 |
pr_debug("After vcc was added "); |
1fa9961d6
|
2061 |
dump_arp_table(priv); |
1da177e4c
|
2062 |
goto out; |
1fa9961d6
|
2063 2064 2065 2066 2067 2068 2069 |
} /* * Not found, snatch address from first data packet that arrives * from this vcc */ entry = make_entry(priv, bus_mac); if (!entry) |
1da177e4c
|
2070 |
goto out; |
1fa9961d6
|
2071 2072 2073 |
entry->vcc = vcc; entry->old_push = old_push; memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN); |
19ffa562e
|
2074 |
eth_zero_addr(entry->mac_addr); |
1fa9961d6
|
2075 |
entry->status = ESI_UNKNOWN; |
d0732f649
|
2076 |
hlist_add_head(&entry->next, &priv->lec_arp_empty_ones); |
1fa9961d6
|
2077 |
entry->timer.expires = jiffies + priv->vcc_timeout_period; |
841b86f32
|
2078 |
entry->timer.function = lec_arp_expire_vcc; |
1fa9961d6
|
2079 |
add_timer(&entry->timer); |
522400623
|
2080 2081 |
pr_debug("After vcc was added "); |
1da177e4c
|
2082 2083 2084 2085 |
dump_arp_table(priv); out: spin_unlock_irqrestore(&priv->lec_arp_lock, flags); } |
1fa9961d6
|
2086 |
static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id) |
1da177e4c
|
2087 2088 |
{ unsigned long flags; |
1fa9961d6
|
2089 2090 |
struct lec_arp_table *entry; int i; |
1da177e4c
|
2091 |
|
99824461e
|
2092 2093 |
pr_debug("%lx ", tran_id); |
6656e3c4c
|
2094 |
restart: |
1fa9961d6
|
2095 2096 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
b67bfe0d4
|
2097 |
hlist_for_each_entry(entry, |
c48192a70
|
2098 2099 2100 |
&priv->lec_arp_tables[i], next) { if (entry->flush_tran_id == tran_id && entry->status == ESI_FLUSH_PENDING) { |
1fa9961d6
|
2101 |
struct sk_buff *skb; |
6656e3c4c
|
2102 |
struct atm_vcc *vcc = entry->vcc; |
1fa9961d6
|
2103 |
|
6656e3c4c
|
2104 |
lec_arp_hold(entry); |
c48192a70
|
2105 2106 |
spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
b4c84ec0f
|
2107 |
while ((skb = skb_dequeue(&entry->tx_wait))) |
162619e59
|
2108 |
lec_send(vcc, skb); |
6656e3c4c
|
2109 |
entry->last_used = jiffies; |
1fa9961d6
|
2110 |
entry->status = ESI_FORWARD_DIRECT; |
6656e3c4c
|
2111 |
lec_arp_put(entry); |
522400623
|
2112 2113 |
pr_debug("LEC_ARP: Flushed "); |
6656e3c4c
|
2114 |
goto restart; |
1fa9961d6
|
2115 2116 2117 |
} } } |
1da177e4c
|
2118 |
spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d6
|
2119 |
dump_arp_table(priv); |
1da177e4c
|
2120 2121 2122 2123 |
} static void lec_set_flush_tran_id(struct lec_priv *priv, |
61c33e012
|
2124 |
const unsigned char *atm_addr, unsigned long tran_id) |
1da177e4c
|
2125 2126 |
{ unsigned long flags; |
1fa9961d6
|
2127 2128 |
struct lec_arp_table *entry; int i; |
1da177e4c
|
2129 2130 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d6
|
2131 |
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) |
b67bfe0d4
|
2132 |
hlist_for_each_entry(entry, |
c48192a70
|
2133 |
&priv->lec_arp_tables[i], next) { |
1fa9961d6
|
2134 2135 |
if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)) { entry->flush_tran_id = tran_id; |
522400623
|
2136 2137 |
pr_debug("Set flush transaction id to %lx for %p ", |
99824461e
|
2138 |
tran_id, entry); |
1fa9961d6
|
2139 |
} |
d0732f649
|
2140 |
} |
1da177e4c
|
2141 2142 |
spin_unlock_irqrestore(&priv->lec_arp_lock, flags); } |
1fa9961d6
|
2143 |
static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc) |
1da177e4c
|
2144 2145 |
{ unsigned long flags; |
1fa9961d6
|
2146 2147 2148 2149 |
unsigned char mac_addr[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; struct lec_arp_table *to_add; |
1da177e4c
|
2150 2151 |
struct lec_vcc_priv *vpriv; int err = 0; |
1fa9961d6
|
2152 |
|
c48192a70
|
2153 2154 |
vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL); if (!vpriv) |
1da177e4c
|
2155 2156 2157 2158 |
return -ENOMEM; vpriv->xoff = 0; vpriv->old_pop = vcc->pop; vcc->user_back = vpriv; |
1fa9961d6
|
2159 |
vcc->pop = lec_pop; |
1da177e4c
|
2160 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
1fa9961d6
|
2161 2162 |
to_add = make_entry(priv, mac_addr); if (!to_add) { |
1da177e4c
|
2163 2164 |
vcc->pop = vpriv->old_pop; kfree(vpriv); |
1fa9961d6
|
2165 |
err = -ENOMEM; |
1da177e4c
|
2166 |
goto out; |
1fa9961d6
|
2167 2168 2169 2170 2171 2172 2173 2174 2175 |
} memcpy(to_add->atm_addr, vcc->remote.sas_addr.prv, ATM_ESA_LEN); to_add->status = ESI_FORWARD_DIRECT; to_add->flags |= LEC_PERMANENT_FLAG; to_add->vcc = vcc; to_add->old_push = vcc->push; vcc->push = lec_push; priv->mcast_vcc = vcc; lec_arp_add(priv, to_add); |
1da177e4c
|
2176 2177 |
out: spin_unlock_irqrestore(&priv->lec_arp_lock, flags); |
1fa9961d6
|
2178 |
return err; |
1da177e4c
|
2179 |
} |
1fa9961d6
|
2180 |
static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc) |
1da177e4c
|
2181 2182 |
{ unsigned long flags; |
b67bfe0d4
|
2183 |
struct hlist_node *next; |
d0732f649
|
2184 |
struct lec_arp_table *entry; |
1fa9961d6
|
2185 |
int i; |
1da177e4c
|
2186 |
|
522400623
|
2187 2188 |
pr_debug("LEC_ARP: lec_vcc_close vpi:%d vci:%d ", vcc->vpi, vcc->vci); |
1fa9961d6
|
2189 |
dump_arp_table(priv); |
d0732f649
|
2190 |
|
1da177e4c
|
2191 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
d0732f649
|
2192 |
|
1fa9961d6
|
2193 |
for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) { |
b67bfe0d4
|
2194 |
hlist_for_each_entry_safe(entry, next, |
c48192a70
|
2195 |
&priv->lec_arp_tables[i], next) { |
1fa9961d6
|
2196 2197 |
if (vcc == entry->vcc) { lec_arp_remove(priv, entry); |
33a9c2d4b
|
2198 |
lec_arp_put(entry); |
c48192a70
|
2199 |
if (priv->mcast_vcc == vcc) |
1fa9961d6
|
2200 |
priv->mcast_vcc = NULL; |
1fa9961d6
|
2201 2202 2203 |
} } } |
b67bfe0d4
|
2204 |
hlist_for_each_entry_safe(entry, next, |
c48192a70
|
2205 |
&priv->lec_arp_empty_ones, next) { |
d0732f649
|
2206 |
if (entry->vcc == vcc) { |
1fa9961d6
|
2207 2208 |
lec_arp_clear_vccs(entry); del_timer(&entry->timer); |
d0732f649
|
2209 |
hlist_del(&entry->next); |
33a9c2d4b
|
2210 |
lec_arp_put(entry); |
1fa9961d6
|
2211 |
} |
1fa9961d6
|
2212 |
} |
b67bfe0d4
|
2213 |
hlist_for_each_entry_safe(entry, next, |
c48192a70
|
2214 |
&priv->lec_no_forward, next) { |
1fa9961d6
|
2215 2216 2217 |
if (entry->recv_vcc == vcc) { lec_arp_clear_vccs(entry); del_timer(&entry->timer); |
d0732f649
|
2218 |
hlist_del(&entry->next); |
33a9c2d4b
|
2219 |
lec_arp_put(entry); |
1fa9961d6
|
2220 |
} |
1fa9961d6
|
2221 |
} |
b67bfe0d4
|
2222 |
hlist_for_each_entry_safe(entry, next, &priv->mcast_fwds, next) { |
1fa9961d6
|
2223 2224 2225 |
if (entry->recv_vcc == vcc) { lec_arp_clear_vccs(entry); /* No timer, LANEv2 7.1.20 and 2.3.5.3 */ |
d0732f649
|
2226 |
hlist_del(&entry->next); |
33a9c2d4b
|
2227 |
lec_arp_put(entry); |
1fa9961d6
|
2228 |
} |
1fa9961d6
|
2229 |
} |
1da177e4c
|
2230 2231 2232 2233 2234 2235 2236 |
spin_unlock_irqrestore(&priv->lec_arp_lock, flags); dump_arp_table(priv); } static void lec_arp_check_empties(struct lec_priv *priv, |
1fa9961d6
|
2237 |
struct atm_vcc *vcc, struct sk_buff *skb) |
1da177e4c
|
2238 |
{ |
1fa9961d6
|
2239 |
unsigned long flags; |
b67bfe0d4
|
2240 |
struct hlist_node *next; |
d0732f649
|
2241 |
struct lec_arp_table *entry, *tmp; |
1fa9961d6
|
2242 |
struct lecdatahdr_8023 *hdr = (struct lecdatahdr_8023 *)skb->data; |
60eea6cf2
|
2243 |
unsigned char *src = hdr->h_source; |
1da177e4c
|
2244 2245 |
spin_lock_irqsave(&priv->lec_arp_lock, flags); |
b67bfe0d4
|
2246 |
hlist_for_each_entry_safe(entry, next, |
c48192a70
|
2247 |
&priv->lec_arp_empty_ones, next) { |
d0732f649
|
2248 2249 |
if (vcc == entry->vcc) { del_timer(&entry->timer); |
116e853f7
|
2250 |
ether_addr_copy(entry->mac_addr, src); |
d0732f649
|
2251 2252 2253 |
entry->status = ESI_FORWARD_DIRECT; entry->last_used = jiffies; /* We might have got an entry */ |
c48192a70
|
2254 2255 |
tmp = lec_arp_find(priv, src); if (tmp) { |
d0732f649
|
2256 |
lec_arp_remove(priv, tmp); |
33a9c2d4b
|
2257 |
lec_arp_put(tmp); |
d0732f649
|
2258 2259 2260 2261 |
} hlist_del(&entry->next); lec_arp_add(priv, entry); goto out; |
1fa9961d6
|
2262 |
} |
1fa9961d6
|
2263 |
} |
522400623
|
2264 2265 |
pr_debug("LEC_ARP: Arp_check_empties: entry not found! "); |
1da177e4c
|
2266 2267 2268 |
out: spin_unlock_irqrestore(&priv->lec_arp_lock, flags); } |
1fa9961d6
|
2269 |
|
1da177e4c
|
2270 |
MODULE_LICENSE("GPL"); |