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Thu, 12 Jun 2025 13:03:14 -0700 (PDT) Received: from localhost ([2a03:2880:20ff:1::]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6fb35b20f67sm13696456d6.16.2025.06.12.13.03.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Jun 2025 13:03:13 -0700 (PDT) From: Gustavo Luiz Duarte Date: Thu, 12 Jun 2025 13:02:14 -0700 Subject: [PATCH net-next v2 1/5] netconsole: introduce 'msgid' as a new sysdata field Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250612-netconsole-msgid-v2-1-d4c1abc84bac@gmail.com> References: <20250612-netconsole-msgid-v2-0-d4c1abc84bac@gmail.com> In-Reply-To: <20250612-netconsole-msgid-v2-0-d4c1abc84bac@gmail.com> To: Breno Leitao , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan , Simon Horman , Jonathan Corbet Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-doc@vger.kernel.org, Gustavo Luiz Duarte X-Mailer: b4 0.13.0 This adds a new sysdata field to enable assigning a per-target unique id to each message sent to that target. This id can later be appended as part of sysdata, allowing targets to detect dropped netconsole messages. Update count_extradata_entries() to take the new field into account. Reviewed-by: Breno Leitao Signed-off-by: Gustavo Luiz Duarte --- drivers/net/netconsole.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index 1eb678e07dd0..5f8c8c6c5393 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -113,6 +113,8 @@ enum sysdata_feature { SYSDATA_TASKNAME = BIT(1), /* Kernel release/version as part of sysdata */ SYSDATA_RELEASE = BIT(2), + /* Include a per-target message ID as part of sysdata */ + SYSDATA_MSGID = BIT(3), }; /** @@ -782,6 +784,8 @@ static size_t count_extradata_entries(struct netconsole_target *nt) entries += 1; if (nt->sysdata_fields & SYSDATA_RELEASE) entries += 1; + if (nt->sysdata_fields & SYSDATA_MSGID) + entries += 1; return entries; }