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 <[email protected]> Signed-off-by: David S. Miller <[email protected]>
josf · Mar 4, 2022 · 7e726ed · 7e726ed
1 parent 44f0bd4
commit 7e726ed
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Showing 3 changed files with 3 additions and 1 deletion.
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
@@ -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,
 };
 

diff --git a/include/trace/events/skb.h b/include/trace/events/skb.h
@@ -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

diff --git a/net/core/dev.c b/net/core/dev.c
@@ -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);