diff options
| author | Koki Sanagi <[email protected]> | 2010-08-23 18:45:02 +0900 |
|---|---|---|
| committer | Frederic Weisbecker <[email protected]> | 2010-09-07 17:51:33 +0200 |
| commit | cf66ba58b5cb8b1526e9dd2fb96ff8db048d4d44 (patch) | |
| tree | e9adada8f043f162dd1fea6ebb9091c66fee8eca /net/core/dev.c | |
| parent | 3e4b10d7a4d2a78af64f8096dc7cdb3bebd65adb (diff) | |
netdev: Add tracepoints to netdev layer
This patch adds tracepoint to dev_queue_xmit, dev_hard_start_xmit,
netif_rx and netif_receive_skb. These tracepoints help you to monitor
network driver's input/output.
<idle>-0 [001] 112447.902030: netif_rx: dev=eth1 skbaddr=f3ef0900 len=84
<idle>-0 [001] 112447.902039: netif_receive_skb: dev=eth1 skbaddr=f3ef0900 len=84
sshd-6828 [000] 112447.903257: net_dev_queue: dev=eth4 skbaddr=f3fca538 len=226
sshd-6828 [000] 112447.903260: net_dev_xmit: dev=eth4 skbaddr=f3fca538 len=226 rc=0
Signed-off-by: Koki Sanagi <[email protected]>
Acked-by: David S. Miller <[email protected]>
Acked-by: Neil Horman <[email protected]>
Cc: Mathieu Desnoyers <[email protected]>
Cc: Kaneshige Kenji <[email protected]>
Cc: Izumo Taku <[email protected]>
Cc: Kosaki Motohiro <[email protected]>
Cc: Lai Jiangshan <[email protected]>
Cc: Scott Mcmillan <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Eric Dumazet <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Frederic Weisbecker <[email protected]>
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 3721fbb9a83c..5a4fbc7405e2 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -128,6 +128,7 @@ #include <linux/jhash.h> #include <linux/random.h> #include <trace/events/napi.h> +#include <trace/events/net.h> #include <linux/pci.h> #include "net-sysfs.h" @@ -1978,6 +1979,7 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, } rc = ops->ndo_start_xmit(skb, dev); + trace_net_dev_xmit(skb, rc); if (rc == NETDEV_TX_OK) txq_trans_update(txq); return rc; @@ -1998,6 +2000,7 @@ gso: 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; @@ -2186,6 +2189,7 @@ int dev_queue_xmit(struct sk_buff *skb) #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; @@ -2512,6 +2516,7 @@ int netif_rx(struct sk_buff *skb) if (netdev_tstamp_prequeue) net_timestamp_check(skb); + trace_netif_rx(skb); #ifdef CONFIG_RPS { struct rps_dev_flow voidflow, *rflow = &voidflow; @@ -2828,6 +2833,7 @@ static int __netif_receive_skb(struct sk_buff *skb) if (!netdev_tstamp_prequeue) net_timestamp_check(skb); + trace_netif_receive_skb(skb); if (vlan_tx_tag_present(skb) && vlan_hwaccel_do_receive(skb)) return NET_RX_SUCCESS; |