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Commit b3f581a0 authored by Subash Abhinov Kasiviswanathan's avatar Subash Abhinov Kasiviswanathan Committed by Sean Tranchetti
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skb: Adding trace event for gso 



This patch adds trace events to help with debug for gso feature
by identifying the packets (and their lengths) that are using
the segmentation offload feature.

CRs-Fixed: 2333588
Change-Id: Ibfe1194cc63e74c75047040b0c540713d539992e
Signed-off-by: default avatarSubash Abhinov Kasiviswanathan <subashab@codeaurora.org>
parent df485206

include/trace/events/skb.h

+22 −0
Original line number Diff line number Diff line
@@ -51,6 +51,28 @@ TRACE_EVENT(consume_skb, 
	TP_printk("skbaddr=%p", __entry->skbaddr)

);



TRACE_EVENT(print_skb_gso,



	TP_PROTO(struct sk_buff *skb),



	TP_ARGS(skb),



	TP_STRUCT__entry(

		__field(void *,	skbaddr)

		__field(int, len)

		__field(int, data_len)

	),



	TP_fast_assign(

		__entry->skbaddr = skb;

		__entry->len = skb->len;

		__entry->data_len = skb->data_len;

	),



	TP_printk("GSO: skbaddr=%p, len=%d, data_len=%d",

		__entry->skbaddr, __entry->len, __entry->data_len)

);



TRACE_EVENT(skb_copy_datagram_iovec,



	TP_PROTO(const struct sk_buff *skb, int len),

net/core/dev.c

+1 −0
Original line number Diff line number Diff line
@@ -3305,6 +3305,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device 
	if (netif_needs_gso(skb, features)) {

		struct sk_buff *segs;



		trace_print_skb_gso(skb);

		segs = skb_gso_segment(skb, features);

		if (IS_ERR(segs)) {

			goto out_kfree_skb;