From: David S. Miller Date: Fri, 4 Mar 2022 12:17:11 +0000 (+0000) Subject: Merge branch 'skb-drop-reasons' X-Git-Tag: v6.6.17~7931^2~191 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6af3b428cd02b09db79f0ee0265dcb8799d9327c;p=platform%2Fkernel%2Flinux-rpi.git Merge branch 'skb-drop-reasons' Menglong Dong says: ==================== net: dev: add skb drop reasons to net/core/dev.c 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 the link layer, which means that 'net/core/dev.c' is our target. Following functions are processed: sch_handle_egress() __dev_xmit_skb() enqueue_to_backlog() do_xdp_generic() sch_handle_ingress() __netif_receive_skb_core() and following new drop reasons are added (what they mean can be see in the document of them): SKB_DROP_REASON_QDISC_EGRESS SKB_DROP_REASON_QDISC_DROP SKB_DROP_REASON_CPU_BACKLOG SKB_DROP_REASON_XDP SKB_DROP_REASON_QDISC_INGRESS SKB_DROP_REASON_PTYPE_ABSENT In order to add skb drop reasons to kfree_skb_list(), the function kfree_skb_list_reason() is introduced in the 2th patch, which will be used in __dev_xmit_skb() in the 3th patch. ==================== Signed-off-by: David S. Miller --- 6af3b428cd02b09db79f0ee0265dcb8799d9327c