Commit 7e726ed8 authored Mar 04, 2022 by Menglong Dong Committed by David S. Miller Mar 04, 2022

net: dev: use kfree_skb_reason() for do_xdp_generic()



Replace kfree_skb() used in do_xdp_generic() with kfree_skb_reason().
The drop reason SKB_DROP_REASON_XDP is introduced for this case.

Signed-off-by: Menglong Dong <imagedong@tencent.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 44f0bd40

include/linux/skbuff.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -405,6 +405,7 @@ enum skb_drop_reason {
		* full (see netdev_max_backlog in
		* net.rst) or RPS flow limit
		*/
		SKB_DROP_REASON_XDP, /* dropped by XDP in input path */
		SKB_DROP_REASON_MAX,
		};

include/trace/events/skb.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -48,6 +48,7 @@
		EM(SKB_DROP_REASON_TC_EGRESS, TC_EGRESS) \
		EM(SKB_DROP_REASON_QDISC_DROP, QDISC_DROP) \
		EM(SKB_DROP_REASON_CPU_BACKLOG, CPU_BACKLOG) \
		EM(SKB_DROP_REASON_XDP, XDP) \
		EMe(SKB_DROP_REASON_MAX, MAX)

		#undef EM

net/core/dev.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -4825,7 +4825,7 @@ int do_xdp_generic(struct bpf_prog xdp_prog, struct sk_buff skb)
		}
		return XDP_PASS;
		out_redir:
		kfree_skb(skb);
		kfree_skb_reason(skb, SKB_DROP_REASON_XDP);
		return XDP_DROP;
		}
		EXPORT_SYMBOL_GPL(do_xdp_generic);