From: menglong8.dong@gmail.com
To: dsahern@kernel.org, kuba@kernel.org
Cc: edumazet@google.com, davem@davemloft.net, rostedt@goodmis.org,
mingo@redhat.com, yoshfuji@linux-ipv6.org, ast@kernel.org,
daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com,
imagedong@tencent.com, talalahmad@google.com,
keescook@chromium.org, ilias.apalodimas@linaro.org,
alobakin@pm.me, memxor@gmail.com, atenart@kernel.org,
bigeasy@linutronix.de, pabeni@redhat.com, linyunsheng@huawei.com,
arnd@arndb.de, yajun.deng@linux.dev, roopa@nvidia.com,
willemb@google.com, vvs@virtuozzo.com, cong.wang@bytedance.com,
luiz.von.dentz@intel.com, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, bpf@vger.kernel.org,
flyingpeng@tencent.com
Subject: [PATCH net-next 15/19] net: dev: add skb drop reasons to __dev_xmit_skb()
Date: Tue, 15 Feb 2022 19:28:08 +0800 [thread overview]
Message-ID: <20220215112812.2093852-16-imagedong@tencent.com> (raw)
In-Reply-To: <20220215112812.2093852-1-imagedong@tencent.com>
From: Menglong Dong <imagedong@tencent.com>
Add reasons for skb drops to __dev_xmit_skb() by replacing
kfree_skb_list() with kfree_skb_list_reason(). The drop reason of
SKB_DROP_REASON_QDISC_DROP is introduced for qdisc enqueue fails.
Signed-off-by: Menglong Dong <imagedong@tencent.com>
---
include/linux/skbuff.h | 4 ++++
include/trace/events/skb.h | 1 +
net/core/dev.c | 5 +++--
3 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index dc3794b60b1c..0f7e5177dbaf 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -400,6 +400,10 @@ enum skb_drop_reason {
* failed (maybe an eBPF program
* is tricking?)
*/
+ SKB_DROP_REASON_QDISC_DROP, /* dropped by qdisc when packet
+ * outputting (failed to enqueue to
+ * current qdisc)
+ */
SKB_DROP_REASON_MAX,
};
diff --git a/include/trace/events/skb.h b/include/trace/events/skb.h
index a79b64eace9e..356bea7567b5 100644
--- a/include/trace/events/skb.h
+++ b/include/trace/events/skb.h
@@ -44,6 +44,7 @@
EM(SKB_DROP_REASON_NEIGH_FAILED, NEIGH_FAILED) \
EM(SKB_DROP_REASON_NEIGH_QUEUEFULL, NEIGH_QUEUEFULL) \
EM(SKB_DROP_REASON_QDISC_EGRESS, QDISC_EGRESS) \
+ EM(SKB_DROP_REASON_QDISC_DROP, QDISC_DROP) \
EMe(SKB_DROP_REASON_MAX, MAX)
#undef EM
diff --git a/net/core/dev.c b/net/core/dev.c
index 2a7b7c1b855a..55e890964fe2 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3710,7 +3710,8 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q,
no_lock_out:
if (unlikely(to_free))
- kfree_skb_list(to_free);
+ kfree_skb_list_reason(to_free,
+ SKB_DROP_REASON_QDISC_DROP);
return rc;
}
@@ -3765,7 +3766,7 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q,
}
spin_unlock(root_lock);
if (unlikely(to_free))
- kfree_skb_list(to_free);
+ kfree_skb_list_reason(to_free, SKB_DROP_REASON_QDISC_DROP);
if (unlikely(contended))
spin_unlock(&q->busylock);
return rc;
--
2.34.1
next prev parent reply other threads:[~2022-02-15 11:33 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-15 11:27 [PATCH net-next 00/19] net: add skb drop reasons for TCP, IP, dev and neigh menglong8.dong
2022-02-15 11:27 ` [PATCH net-next 01/19] net: tcp: introduce tcp_drop_reason() menglong8.dong
2022-02-15 17:34 ` Eric Dumazet
2022-02-15 18:47 ` David Ahern
2022-02-16 2:38 ` Menglong Dong
2022-02-16 2:31 ` Menglong Dong
2022-02-15 11:27 ` [PATCH net-next 02/19] net: tcp: add skb drop reasons to tcp_v4_rcv() menglong8.dong
2022-02-15 11:27 ` [PATCH net-next 03/19] net: tcp: use kfree_skb_reason() for tcp_v6_rcv() menglong8.dong
2022-02-15 11:27 ` [PATCH net-next 04/19] net: tcp: add skb drop reasons to tcp_v{4,6}_inbound_md5_hash() menglong8.dong
2022-02-15 11:27 ` [PATCH net-next 05/19] net: tcp: add skb drop reasons to tcp_add_backlog() menglong8.dong
2022-02-15 11:27 ` [PATCH net-next 06/19] net: tcp: use kfree_skb_reason() for tcp_v{4,6}_do_rcv() menglong8.dong
2022-02-15 11:28 ` [PATCH net-next 07/19] net: tcp: use tcp_drop_reason() for tcp_rcv_established() menglong8.dong
2022-02-15 11:28 ` [PATCH net-next 08/19] net: tcp: use tcp_drop_reason() for tcp_data_queue() menglong8.dong
2022-02-15 11:28 ` [PATCH net-next 09/19] net: tcp: use tcp_drop_reason() for tcp_data_queue_ofo() menglong8.dong
2022-02-15 11:28 ` [PATCH net-next 10/19] net: ip: add skb drop reasons during ip outputting menglong8.dong
2022-02-15 11:28 ` [PATCH net-next 11/19] net: neigh: use kfree_skb_reason() for __neigh_event_send() menglong8.dong
2022-02-15 11:28 ` [PATCH net-next 12/19] net: neigh: add skb drop reasons to arp_error_report() menglong8.dong
2022-02-15 11:28 ` [PATCH net-next 13/19] net: dev: use kfree_skb_reason() for sch_handle_egress() menglong8.dong
2022-02-15 11:28 ` [PATCH net-next 14/19] net: skb: introduce the function kfree_skb_list_reason() menglong8.dong
2022-02-15 11:28 ` menglong8.dong [this message]
2022-02-15 11:28 ` [PATCH net-next 16/19] net: dev: use kfree_skb_reason() for enqueue_to_backlog() menglong8.dong
2022-02-15 11:28 ` [PATCH net-next 17/19] net: dev: use kfree_skb_reason() for do_xdp_generic() menglong8.dong
2022-02-15 11:28 ` [PATCH net-next 18/19] net: dev: use kfree_skb_reason() for sch_handle_ingress() menglong8.dong
2022-02-15 11:28 ` [PATCH net-next 19/19] net: dev: use kfree_skb_reason() for __netif_receive_skb_core() menglong8.dong
2022-02-15 16:04 ` [PATCH net-next 00/19] net: add skb drop reasons for TCP, IP, dev and neigh Jakub Kicinski
2022-02-15 16:09 ` David Ahern
2022-02-16 1:55 ` Menglong Dong
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