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Wed, 11 Feb 2026 00:50:53 -0800 (PST) Received: from [192.168.88.32] ([212.105.155.220]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-43783dfc8b9sm2993554f8f.24.2026.02.11.00.50.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 11 Feb 2026 00:50:53 -0800 (PST) Message-ID: <36d9d3f0-2a26-4b9c-b6b6-f50610fbaa31@redhat.com> Date: Wed, 11 Feb 2026 09:50:51 +0100 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next v3 1/6] net: sched: introduce qdisc-specific drop reason tracing To: Jesper Dangaard Brouer , netdev@vger.kernel.org, Eric Dumazet , "David S. Miller" , =?UTF-8?Q?Toke_H=C3=B8iland-J=C3=B8rgensen?= Cc: bpf@vger.kernel.org, Jakub Kicinski , horms@kernel.org, jiri@resnulli.us, edumazet@google.com, xiyou.wangcong@gmail.com, jhs@mojatatu.com, atenart@redhat.com, carges@cloudflare.com, kernel-team@cloudflare.com References: <177039500964.2258217.2989656069254156812.stgit@firesoul> <177039506239.2258217.7863252279149995024.stgit@firesoul> Content-Language: en-US From: Paolo Abeni In-Reply-To: <177039506239.2258217.7863252279149995024.stgit@firesoul> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 2/6/26 5:24 PM, Jesper Dangaard Brouer wrote: > Create new enum qdisc_drop_reason and trace_qdisc_drop tracepoint > for qdisc layer drop diagnostics with direct qdisc context visibility. > > The new tracepoint includes qdisc handle, parent, kind (name), and > device information. Existing SKB_DROP_REASON_QDISC_DROP is retained > for backwards compatibility via kfree_skb_reason(). > > Convert FQ, FQ_CoDel, CoDel, SFB, and pfifo_fast to use the new > infrastructure. > > Reported-by: syzbot+ci335f183b8446659a@syzkaller.appspotmail.com > Signed-off-by: Jesper Dangaard Brouer > --- > include/net/dropreason-core.h | 42 ++---------------- > include/net/dropreason-qdisc.h | 95 ++++++++++++++++++++++++++++++++++++++++ I think it would be useful to add dropreason-qdisc.h to the net/sched maintainer's entry. /P