static inline struct list_head *ptype_head(const struct packet_type *pt)
{
if (pt->type == htons(ETH_P_ALL))
- return &ptype_all;
+ return pt->dev ? &pt->dev->ptype_all : &ptype_all;
else
- return &ptype_base[ntohs(pt->type) & PTYPE_HASH_MASK];
+ return pt->dev ? &pt->dev->ptype_specific :
+ &ptype_base[ntohs(pt->type) & PTYPE_HASH_MASK];
}
/**
return pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
}
+static inline void deliver_ptype_list_skb(struct sk_buff *skb,
+ struct packet_type **pt,
+ struct net_device *dev, __be16 type,
+ struct list_head *ptype_list)
+{
+ struct packet_type *ptype, *pt_prev = *pt;
+
+ list_for_each_entry_rcu(ptype, ptype_list, list) {
+ if (ptype->type != type)
+ continue;
+ if (pt_prev)
+ deliver_skb(skb, pt_prev, dev);
+ pt_prev = ptype;
+ }
+ *pt = pt_prev;
+}
+
static inline bool skb_loop_sk(struct packet_type *ptype, struct sk_buff *skb)
{
if (!ptype->af_packet_priv || !skb->sk)
struct packet_type *ptype;
struct sk_buff *skb2 = NULL;
struct packet_type *pt_prev = NULL;
+ struct list_head *ptype_list = &ptype_all;
rcu_read_lock();
- list_for_each_entry_rcu(ptype, &ptype_all, list) {
+again:
+ list_for_each_entry_rcu(ptype, ptype_list, list) {
/* Never send packets back to the socket
* they originated from - MvS (miquels@drinkel.ow.org)
*/
- if ((ptype->dev == dev || !ptype->dev) &&
- (!skb_loop_sk(ptype, skb))) {
- if (pt_prev) {
- deliver_skb(skb2, pt_prev, skb->dev);
- pt_prev = ptype;
- continue;
- }
+ if (skb_loop_sk(ptype, skb))
+ continue;
- skb2 = skb_clone(skb, GFP_ATOMIC);
- if (!skb2)
- break;
+ if (pt_prev) {
+ deliver_skb(skb2, pt_prev, skb->dev);
+ pt_prev = ptype;
+ continue;
+ }
- net_timestamp_set(skb2);
+ /* need to clone skb, done only once */
+ skb2 = skb_clone(skb, GFP_ATOMIC);
+ if (!skb2)
+ goto out_unlock;
- /* skb->nh should be correctly
- set by sender, so that the second statement is
- just protection against buggy protocols.
- */
- skb_reset_mac_header(skb2);
-
- if (skb_network_header(skb2) < skb2->data ||
- skb_network_header(skb2) > skb_tail_pointer(skb2)) {
- net_crit_ratelimited("protocol %04x is buggy, dev %s\n",
- ntohs(skb2->protocol),
- dev->name);
- skb_reset_network_header(skb2);
- }
+ net_timestamp_set(skb2);
- skb2->transport_header = skb2->network_header;
- skb2->pkt_type = PACKET_OUTGOING;
- pt_prev = ptype;
+ /* skb->nh should be correctly
+ * set by sender, so that the second statement is
+ * just protection against buggy protocols.
+ */
+ skb_reset_mac_header(skb2);
+
+ if (skb_network_header(skb2) < skb2->data ||
+ skb_network_header(skb2) > skb_tail_pointer(skb2)) {
+ net_crit_ratelimited("protocol %04x is buggy, dev %s\n",
+ ntohs(skb2->protocol),
+ dev->name);
+ skb_reset_network_header(skb2);
}
+
+ skb2->transport_header = skb2->network_header;
+ skb2->pkt_type = PACKET_OUTGOING;
+ pt_prev = ptype;
+ }
+
+ if (ptype_list == &ptype_all) {
+ ptype_list = &dev->ptype_all;
+ goto again;
}
+out_unlock:
if (pt_prev)
pt_prev->func(skb2, skb->dev, pt_prev, skb->dev);
rcu_read_unlock();
if (skb->encapsulation)
features &= dev->hw_enc_features;
- if (!vlan_tx_tag_present(skb)) {
+ if (!skb_vlan_tag_present(skb)) {
if (unlikely(protocol == htons(ETH_P_8021Q) ||
protocol == htons(ETH_P_8021AD))) {
struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
unsigned int len;
int rc;
- if (!list_empty(&ptype_all))
+ if (!list_empty(&ptype_all) || !list_empty(&dev->ptype_all))
dev_queue_xmit_nit(skb, dev);
len = skb->len;
static struct sk_buff *validate_xmit_vlan(struct sk_buff *skb,
netdev_features_t features)
{
- if (vlan_tx_tag_present(skb) &&
+ if (skb_vlan_tag_present(skb) &&
!vlan_hw_offload_capable(features, skb->vlan_proto))
skb = __vlan_hwaccel_push_inside(skb);
return skb;
struct packet_type *ptype, *pt_prev;
rx_handler_func_t *rx_handler;
struct net_device *orig_dev;
- struct net_device *null_or_dev;
bool deliver_exact = false;
int ret = NET_RX_DROP;
__be16 type;
goto skip_taps;
list_for_each_entry_rcu(ptype, &ptype_all, list) {
- if (!ptype->dev || ptype->dev == skb->dev) {
- if (pt_prev)
- ret = deliver_skb(skb, pt_prev, orig_dev);
- pt_prev = ptype;
- }
+ if (pt_prev)
+ ret = deliver_skb(skb, pt_prev, orig_dev);
+ pt_prev = ptype;
+ }
+
+ list_for_each_entry_rcu(ptype, &skb->dev->ptype_all, list) {
+ if (pt_prev)
+ ret = deliver_skb(skb, pt_prev, orig_dev);
+ pt_prev = ptype;
}
skip_taps:
if (pfmemalloc && !skb_pfmemalloc_protocol(skb))
goto drop;
- if (vlan_tx_tag_present(skb)) {
+ if (skb_vlan_tag_present(skb)) {
if (pt_prev) {
ret = deliver_skb(skb, pt_prev, orig_dev);
pt_prev = NULL;
}
}
- if (unlikely(vlan_tx_tag_present(skb))) {
- if (vlan_tx_tag_get_id(skb))
+ if (unlikely(skb_vlan_tag_present(skb))) {
+ if (skb_vlan_tag_get_id(skb))
skb->pkt_type = PACKET_OTHERHOST;
/* Note: we might in the future use prio bits
* and set skb->priority like in vlan_do_receive()
skb->vlan_tci = 0;
}
+ type = skb->protocol;
+
/* deliver only exact match when indicated */
- null_or_dev = deliver_exact ? skb->dev : NULL;
+ if (likely(!deliver_exact)) {
+ deliver_ptype_list_skb(skb, &pt_prev, orig_dev, type,
+ &ptype_base[ntohs(type) &
+ PTYPE_HASH_MASK]);
+ }
- type = skb->protocol;
- list_for_each_entry_rcu(ptype,
- &ptype_base[ntohs(type) & PTYPE_HASH_MASK], list) {
- if (ptype->type == type &&
- (ptype->dev == null_or_dev || ptype->dev == skb->dev ||
- ptype->dev == orig_dev)) {
- if (pt_prev)
- ret = deliver_skb(skb, pt_prev, orig_dev);
- pt_prev = ptype;
- }
+ deliver_ptype_list_skb(skb, &pt_prev, orig_dev, type,
+ &orig_dev->ptype_specific);
+
+ if (unlikely(skb->dev != orig_dev)) {
+ deliver_ptype_list_skb(skb, &pt_prev, orig_dev, type,
+ &skb->dev->ptype_specific);
}
if (pt_prev) {
{
unsigned int i, count = dev->num_rx_queues;
struct netdev_rx_queue *rx;
+ size_t sz = count * sizeof(*rx);
BUG_ON(count < 1);
- rx = kcalloc(count, sizeof(struct netdev_rx_queue), GFP_KERNEL);
- if (!rx)
- return -ENOMEM;
-
+ rx = kzalloc(sz, GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT);
+ if (!rx) {
+ rx = vzalloc(sz);
+ if (!rx)
+ return -ENOMEM;
+ }
dev->_rx = rx;
for (i = 0; i < count; i++)
/* paranoia */
BUG_ON(netdev_refcnt_read(dev));
+ BUG_ON(!list_empty(&dev->ptype_all));
+ BUG_ON(!list_empty(&dev->ptype_specific));
WARN_ON(rcu_access_pointer(dev->ip_ptr));
WARN_ON(rcu_access_pointer(dev->ip6_ptr));
WARN_ON(dev->dn_ptr);
INIT_LIST_HEAD(&dev->adj_list.lower);
INIT_LIST_HEAD(&dev->all_adj_list.upper);
INIT_LIST_HEAD(&dev->all_adj_list.lower);
+ INIT_LIST_HEAD(&dev->ptype_all);
+ INIT_LIST_HEAD(&dev->ptype_specific);
dev->priv_flags = IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM;
setup(dev);
netif_free_tx_queues(dev);
#ifdef CONFIG_SYSFS
- kfree(dev->_rx);
+ kvfree(dev->_rx);
#endif
kfree(rcu_dereference_protected(dev->ingress_queue, 1));
oldsd->output_queue = NULL;
oldsd->output_queue_tailp = &oldsd->output_queue;
}
- /* Append NAPI poll list from offline CPU. */
- if (!list_empty(&oldsd->poll_list)) {
- list_splice_init(&oldsd->poll_list, &sd->poll_list);
- raise_softirq_irqoff(NET_RX_SOFTIRQ);
+ /* Append NAPI poll list from offline CPU, with one exception :
+ * process_backlog() must be called by cpu owning percpu backlog.
+ * We properly handle process_queue & input_pkt_queue later.
+ */
+ while (!list_empty(&oldsd->poll_list)) {
+ struct napi_struct *napi = list_first_entry(&oldsd->poll_list,
+ struct napi_struct,
+ poll_list);
+
+ list_del_init(&napi->poll_list);
+ if (napi->poll == process_backlog)
+ napi->state = 0;
+ else
+ ____napi_schedule(sd, napi);
}
raise_softirq_irqoff(NET_TX_SOFTIRQ);
netif_rx_internal(skb);
input_queue_head_incr(oldsd);
}
- while ((skb = __skb_dequeue(&oldsd->input_pkt_queue))) {
+ while ((skb = skb_dequeue(&oldsd->input_pkt_queue))) {
netif_rx_internal(skb);
input_queue_head_incr(oldsd);
}
projects / cascardo / linux.git / blobdiff