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path: root/include/trace/events/net.h
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2014-03-26net: Rename skb->rxhash to skb->hashTom Herbert
The packet hash can be considered a property of the packet, not just on RX path. This patch changes name of rxhash and l4_rxhash skbuff fields to be hash and l4_hash respectively. This includes changing uses of the field in the code which don't call the access functions. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Mahesh Bandewar <maheshb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-14net: Add trace events for all receive entry points, exposing more skb fieldsBen Hutchings
The existing net/netif_rx and net/netif_receive_skb trace events provide little information about the skb, nor do they indicate how it entered the stack. Add trace events at entry of each of the exported functions, including most fields that are likely to be interesting for debugging driver datapath behaviour. Split netif_rx() and netif_receive_skb() so that internal calls are not traced. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-14net: Add net_dev_start_xmit trace event, exposing more skb fieldsBen Hutchings
The existing net/net_dev_xmit trace event provides little information about the skb that has been passed to the driver, and it is not simple to add more since the skb may already have been freed at the point the event is emitted. Add a separate trace event before the skb is passed to the driver, including most fields that are likely to be interesting for debugging driver datapath behaviour. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-02net: tracepoint of net_dev_xmit sees freed skb and causes panicKoki Sanagi
Because there is a possibility that skb is kfree_skb()ed and zero cleared after ndo_start_xmit, we should not see the contents of skb like skb->len and skb->dev->name after ndo_start_xmit. But trace_net_dev_xmit does that and causes panic by NULL pointer dereference. This patch fixes trace_net_dev_xmit not to see the contents of skb directly. If you want to reproduce this panic, 1. Get tracepoint of net_dev_xmit on 2. Create 2 guests on KVM 2. Make 2 guests use virtio_net 4. Execute netperf from one to another for a long time as a network burden 5. host will panic(It takes about 30 minutes) Signed-off-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-07netdev: Add tracepoints to netdev layerKoki Sanagi
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 <sanagi.koki@jp.fujitsu.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Neil Horman <nhorman@tuxdriver.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Kaneshige Kenji <kaneshige.kenji@jp.fujitsu.com> Cc: Izumo Taku <izumi.taku@jp.fujitsu.com> Cc: Kosaki Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Scott Mcmillan <scott.a.mcmillan@intel.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Eric Dumazet <eric.dumazet@gmail.com> LKML-Reference: <4C72431E.3000901@jp.fujitsu.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>