#include <linux/jhash.h>
#include <linux/random.h>
#include <trace/events/napi.h>
+#include <trace/events/net.h>
+#include <trace/events/skb.h>
#include <linux/pci.h>
#include <linux/inetdevice.h>
nf_reset(skb);
if (unlikely(!(dev->flags & IFF_UP) ||
- (skb->len > (dev->mtu + dev->hard_header_len)))) {
+ (skb->len > (dev->mtu + dev->hard_header_len + VLAN_HLEN)))) {
atomic_long_inc(&dev->rx_dropped);
kfree_skb(skb);
return NET_RX_DROP;
}
rc = ops->ndo_start_xmit(skb, dev);
+ trace_net_dev_xmit(skb, rc);
if (rc == NETDEV_TX_OK)
txq_trans_update(txq);
return rc;
skb_dst_drop(nskb);
rc = ops->ndo_start_xmit(nskb, dev);
+ trace_net_dev_xmit(nskb, rc);
if (unlikely(rc != NETDEV_TX_OK)) {
if (rc & ~NETDEV_TX_MASK)
goto out_kfree_gso_skb;
}
static DEFINE_PER_CPU(int, xmit_recursion);
-#define RECURSION_LIMIT 3
+#define RECURSION_LIMIT 10
/**
* dev_queue_xmit - transmit a buffer
#ifdef CONFIG_NET_CLS_ACT
skb->tc_verd = SET_TC_AT(skb->tc_verd, AT_EGRESS);
#endif
+ trace_net_dev_queue(skb);
if (q->enqueue) {
rc = __dev_xmit_skb(skb, q, dev, txq);
goto out;
#ifdef CONFIG_RPS
/* One global table that all flow-based protocols share. */
-struct rps_sock_flow_table *rps_sock_flow_table __read_mostly;
+struct rps_sock_flow_table __rcu *rps_sock_flow_table __read_mostly;
EXPORT_SYMBOL(rps_sock_flow_table);
/*
struct rps_dev_flow **rflowp)
{
struct netdev_rx_queue *rxqueue;
- struct rps_map *map = NULL;
+ struct rps_map *map;
struct rps_dev_flow_table *flow_table;
struct rps_sock_flow_table *sock_flow_table;
int cpu = -1;
} else
rxqueue = dev->_rx;
- if (rxqueue->rps_map) {
- map = rcu_dereference(rxqueue->rps_map);
- if (map && map->len == 1) {
+ map = rcu_dereference(rxqueue->rps_map);
+ if (map) {
+ if (map->len == 1) {
tcpu = map->cpus[0];
if (cpu_online(tcpu))
cpu = tcpu;
goto done;
}
- } else if (!rxqueue->rps_flow_table) {
+ } else if (!rcu_dereference_raw(rxqueue->rps_flow_table)) {
goto done;
}
if (netdev_tstamp_prequeue)
net_timestamp_check(skb);
+ trace_netif_rx(skb);
#ifdef CONFIG_RPS
{
struct rps_dev_flow voidflow, *rflow = &voidflow;
clist = clist->next;
WARN_ON(atomic_read(&skb->users));
+ trace_kfree_skb(skb, net_tx_action);
__kfree_skb(skb);
}
}
if (!netdev_tstamp_prequeue)
net_timestamp_check(skb);
+ trace_netif_receive_skb(skb);
+
/* if we've gotten here through NAPI, check netpoll */
if (netpoll_receive_skb(skb))
return NET_RX_DROP;
}
EXPORT_SYMBOL(napi_gro_receive);
-void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb)
+static void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb)
{
__skb_pull(skb, skb_headlen(skb));
skb_reserve(skb, NET_IP_ALIGN - skb_headroom(skb));
napi->skb = skb;
}
-EXPORT_SYMBOL(napi_reuse_skb);
struct sk_buff *napi_get_frags(struct napi_struct *napi)
{
/* paranoia */
BUG_ON(netdev_refcnt_read(dev));
WARN_ON(rcu_dereference_raw(dev->ip_ptr));
- WARN_ON(dev->ip6_ptr);
+ WARN_ON(rcu_dereference_raw(dev->ip6_ptr));
WARN_ON(dev->dn_ptr);
if (dev->destructor)