Messages in this thread | | | From | menglong8.dong@gmail ... | Subject | [PATCH net-next 0/3] net: gre: add skb drop reasons to gre packet receive | Date | Mon, 14 Mar 2022 21:33:09 +0800 |
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From: Menglong Dong <imagedong@tencent.com>
In the commit c504e5c2f964 ("net: skb: introduce kfree_skb_reason()"), we added the support of reporting the reasons of skb drops to kfree_skb tracepoint. And in this series patches, reasons for skb drops are added to gre packet receiving path.
gre_rcv() in gre_demux.c is handled in the 1th patch.
In order to report skb drop reasons, we make erspan_rcv() return PACKET_NEXT when no tunnel device found in the 2th patch. This may don't correspond to 'PACKET_NEXT', but don't matter.
And gre_rcv() in ip_gre.c is handled in the 3th patch.
Following drop reasons are added(what they mean can be see in the document for them):
SKB_DROP_REASON_GRE_VERSION SKB_DROP_REASON_GRE_NOHANDLER SKB_DROP_REASON_GRE_CSUM SKB_DROP_REASON_GRE_NOTUNNEL
Maybe SKB_DROP_REASON_GRE_NOHANDLER can be replaced with SKB_DROP_REASON_GRE_VERSION? As no gre_protocol found means that gre version not supported.
PS: This set is parallel with the set "net: icmp: add skb drop reasons to icmp", please don't mind :)
Menglong Dong (3): net: gre_demux: add skb drop reasons to gre_rcv() net: ipgre: make erspan_rcv() return PACKET_NEXT net: ipgre: add skb drop reasons to gre_rcv()
include/linux/skbuff.h | 6 ++++++ include/trace/events/skb.h | 4 ++++ net/ipv4/gre_demux.c | 12 +++++++++--- net/ipv4/ip_gre.c | 30 +++++++++++++++++++----------- 4 files changed, 38 insertions(+), 14 deletions(-)
-- 2.35.1
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