struct net_device *device;
/* keep old push, pop functions for chaining */
void (*old_push) (struct atm_vcc * vcc, struct sk_buff * skb);
- /* void (*old_pop)(struct atm_vcc *vcc, struct sk_buff *skb); */
+ void (*old_pop)(struct atm_vcc *vcc, struct sk_buff *skb);
enum br2684_encaps encaps;
struct list_head brvccs;
#ifdef CONFIG_ATM_BR2684_IPFILTER
struct list_head br2684_devs;
int number;
struct list_head brvccs; /* one device <=> one vcc (before xmas) */
- struct net_device_stats stats;
int mac_was_set;
enum br2684_payload payload;
};
static inline struct br2684_dev *BRPRIV(const struct net_device *net_dev)
{
- return (struct br2684_dev *)net_dev->priv;
+ return (struct br2684_dev *)netdev_priv(net_dev);
}
static inline struct net_device *list_entry_brdev(const struct list_head *le)
return NULL;
}
+/* chained vcc->pop function. Check if we should wake the netif_queue */
+static void br2684_pop(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+ struct br2684_vcc *brvcc = BR2684_VCC(vcc);
+ struct net_device *net_dev = skb->dev;
+
+ pr_debug("br2684_pop(vcc %p ; net_dev %p )\n", vcc, net_dev);
+ brvcc->old_pop(vcc, skb);
+
+ if (!net_dev)
+ return;
+
+ if (atm_may_send(vcc, 0))
+ netif_wake_queue(net_dev);
+
+}
/*
* Send a packet out a particular vcc. Not to useful right now, but paves
* the way for multiple vcc's per itf. Returns true if we can send,
* otherwise false
*/
-static int br2684_xmit_vcc(struct sk_buff *skb, struct br2684_dev *brdev,
+static int br2684_xmit_vcc(struct sk_buff *skb, struct net_device *dev,
struct br2684_vcc *brvcc)
{
+ struct br2684_dev *brdev = BRPRIV(dev);
struct atm_vcc *atmvcc;
int minheadroom = (brvcc->encaps == e_llc) ? 10 : 2;
ATM_SKB(skb)->vcc = atmvcc = brvcc->atmvcc;
pr_debug("atm_skb(%p)->vcc(%p)->dev(%p)\n", skb, atmvcc, atmvcc->dev);
- if (!atm_may_send(atmvcc, skb->truesize)) {
- /*
- * We free this here for now, because we cannot know in a higher
- * layer whether the skb pointer it supplied wasn't freed yet.
- * Now, it always is.
- */
- dev_kfree_skb(skb);
- return 0;
- }
atomic_add(skb->truesize, &sk_atm(atmvcc)->sk_wmem_alloc);
ATM_SKB(skb)->atm_options = atmvcc->atm_options;
- brdev->stats.tx_packets++;
- brdev->stats.tx_bytes += skb->len;
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
atmvcc->send(atmvcc, skb);
+
+ if (!atm_may_send(atmvcc, 0)) {
+ netif_stop_queue(brvcc->device);
+ /*check for race with br2684_pop*/
+ if (atm_may_send(atmvcc, 0))
+ netif_start_queue(brvcc->device);
+ }
+
return 1;
}
return list_empty(&brdev->brvccs) ? NULL : list_entry_brvcc(brdev->brvccs.next); /* 1 vcc/dev right now */
}
-static int br2684_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t br2684_start_xmit(struct sk_buff *skb,
+ struct net_device *dev)
{
struct br2684_dev *brdev = BRPRIV(dev);
struct br2684_vcc *brvcc;
- pr_debug("br2684_start_xmit, skb->dst=%p\n", skb->dst);
+ pr_debug("br2684_start_xmit, skb_dst(skb)=%p\n", skb_dst(skb));
read_lock(&devs_lock);
brvcc = pick_outgoing_vcc(skb, brdev);
if (brvcc == NULL) {
pr_debug("no vcc attached to dev %s\n", dev->name);
- brdev->stats.tx_errors++;
- brdev->stats.tx_carrier_errors++;
+ dev->stats.tx_errors++;
+ dev->stats.tx_carrier_errors++;
/* netif_stop_queue(dev); */
dev_kfree_skb(skb);
read_unlock(&devs_lock);
- return 0;
+ return NETDEV_TX_OK;
}
- if (!br2684_xmit_vcc(skb, brdev, brvcc)) {
+ if (!br2684_xmit_vcc(skb, dev, brvcc)) {
/*
* We should probably use netif_*_queue() here, but that
* involves added complication. We need to walk before
*
* Don't free here! this pointer might be no longer valid!
*/
- brdev->stats.tx_errors++;
- brdev->stats.tx_fifo_errors++;
+ dev->stats.tx_errors++;
+ dev->stats.tx_fifo_errors++;
}
read_unlock(&devs_lock);
- return 0;
-}
-
-static struct net_device_stats *br2684_get_stats(struct net_device *dev)
-{
- pr_debug("br2684_get_stats\n");
- return &BRPRIV(dev)->stats;
+ return NETDEV_TX_OK;
}
/*
* We remember when the MAC gets set, so we don't override it later with
* the ESI of the ATM card of the first VC
*/
-static int (*my_eth_mac_addr) (struct net_device *, void *);
static int br2684_mac_addr(struct net_device *dev, void *p)
{
- int err = my_eth_mac_addr(dev, p);
+ int err = eth_mac_addr(dev, p);
if (!err)
BRPRIV(dev)->mac_was_set = 1;
return err;
if (memcmp
(skb->data + 6, ethertype_ipv6,
sizeof(ethertype_ipv6)) == 0)
- skb->protocol = __constant_htons(ETH_P_IPV6);
+ skb->protocol = htons(ETH_P_IPV6);
else if (memcmp
(skb->data + 6, ethertype_ipv4,
sizeof(ethertype_ipv4)) == 0)
- skb->protocol = __constant_htons(ETH_P_IP);
+ skb->protocol = htons(ETH_P_IP);
else
goto error;
skb_pull(skb, sizeof(llc_oui_ipv4));
skb_reset_network_header(skb);
iph = ip_hdr(skb);
if (iph->version == 4)
- skb->protocol = __constant_htons(ETH_P_IP);
+ skb->protocol = htons(ETH_P_IP);
else if (iph->version == 6)
- skb->protocol = __constant_htons(ETH_P_IPV6);
+ skb->protocol = htons(ETH_P_IPV6);
else
goto error;
skb->pkt_type = PACKET_HOST;
/* sigh, interface is down? */
if (unlikely(!(net_dev->flags & IFF_UP)))
goto dropped;
- brdev->stats.rx_packets++;
- brdev->stats.rx_bytes += skb->len;
+ net_dev->stats.rx_packets++;
+ net_dev->stats.rx_bytes += skb->len;
memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
netif_rx(skb);
return;
dropped:
- brdev->stats.rx_dropped++;
+ net_dev->stats.rx_dropped++;
goto free_skb;
error:
- brdev->stats.rx_errors++;
+ net_dev->stats.rx_errors++;
free_skb:
dev_kfree_skb(skb);
return;
*/
static int br2684_regvcc(struct atm_vcc *atmvcc, void __user * arg)
{
+ struct sk_buff_head queue;
int err;
struct br2684_vcc *brvcc;
- struct sk_buff *skb;
+ struct sk_buff *skb, *tmp;
struct sk_buff_head *rq;
struct br2684_dev *brdev;
struct net_device *net_dev;
atmvcc->user_back = brvcc;
brvcc->encaps = (enum br2684_encaps)be.encaps;
brvcc->old_push = atmvcc->push;
+ brvcc->old_pop = atmvcc->pop;
barrier();
atmvcc->push = br2684_push;
+ atmvcc->pop = br2684_pop;
+ __skb_queue_head_init(&queue);
rq = &sk_atm(atmvcc)->sk_receive_queue;
spin_lock_irqsave(&rq->lock, flags);
- if (skb_queue_empty(rq)) {
- skb = NULL;
- } else {
- /* NULL terminate the list. */
- rq->prev->next = NULL;
- skb = rq->next;
- }
- rq->prev = rq->next = (struct sk_buff *)rq;
- rq->qlen = 0;
+ skb_queue_splice_init(rq, &queue);
spin_unlock_irqrestore(&rq->lock, flags);
- while (skb) {
- struct sk_buff *next = skb->next;
+ skb_queue_walk_safe(&queue, skb, tmp) {
+ struct net_device *dev = skb->dev;
- skb->next = skb->prev = NULL;
- br2684_push(atmvcc, skb);
- BRPRIV(skb->dev)->stats.rx_bytes -= skb->len;
- BRPRIV(skb->dev)->stats.rx_packets--;
+ dev->stats.rx_bytes -= skb->len;
+ dev->stats.rx_packets--;
- skb = next;
+ br2684_push(atmvcc, skb);
}
__module_get(THIS_MODULE);
return 0;
return err;
}
+static const struct net_device_ops br2684_netdev_ops = {
+ .ndo_start_xmit = br2684_start_xmit,
+ .ndo_set_mac_address = br2684_mac_addr,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
static void br2684_setup(struct net_device *netdev)
{
struct br2684_dev *brdev = BRPRIV(netdev);
ether_setup(netdev);
brdev->net_dev = netdev;
- my_eth_mac_addr = netdev->set_mac_address;
- netdev->set_mac_address = br2684_mac_addr;
- netdev->hard_start_xmit = br2684_start_xmit;
- netdev->get_stats = br2684_get_stats;
+ netdev->netdev_ops = &br2684_netdev_ops;
INIT_LIST_HEAD(&brdev->brvccs);
}
brdev->net_dev = netdev;
netdev->hard_header_len = 0;
- my_eth_mac_addr = netdev->set_mac_address;
- netdev->set_mac_address = br2684_mac_addr;
- netdev->hard_start_xmit = br2684_start_xmit;
- netdev->get_stats = br2684_get_stats;
+
+ netdev->netdev_ops = &br2684_netdev_ops;
netdev->addr_len = 0;
netdev->mtu = 1500;
netdev->type = ARPHRD_PPP;
br2684_devs);
const struct net_device *net_dev = brdev->net_dev;
const struct br2684_vcc *brvcc;
- DECLARE_MAC_BUF(mac);
- seq_printf(seq, "dev %.16s: num=%d, mac=%s (%s)\n",
+ seq_printf(seq, "dev %.16s: num=%d, mac=%pM (%s)\n",
net_dev->name,
brdev->number,
- print_mac(mac, net_dev->dev_addr),
+ net_dev->dev_addr,
brdev->mac_was_set ? "set" : "auto");
list_for_each_entry(brvcc, &brdev->brvccs, brvccs) {