evie/android_kernel_oneplus_msm8998
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skb: Adding trace event for gso.

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

Change-Id: Ibfe1194cc63e74c75047040b0c540713d539992e
Acked-by: Ashwanth Goli <ashwanth@qti.qualcomm.com>
Signed-off-by: Ravinder Konka <rkonka@codeaurora.org>
This commit is contained in:
Ravinder Konka 2016-02-10 09:02:20 +05:30 • committed by David Keitel
parent 410646778a
commit c60a91f21f
2 changed files with 23 additions and 0 deletions
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22
include/trace/events/skb.h
View file

@ -50,6 +50,28 @@ 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),

1
net/core/dev.c
View file

@ -2768,6 +2768,7 @@ 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;