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Thu, 18 Dec 2025 08:06:36 -0800 (PST) From: Rakuram Eswaran To: socketcan@hartkopp.net Cc: linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, mailhol@kernel.org, mkl@pengutronix.de, rakuram.e96@gmail.com Subject: Re: [RFC PATCH 0/2] can: add dummy_can termination and update SocketCAN docs for CAN XL Date: Thu, 18 Dec 2025 21:36:26 +0530 Message-ID: <20251218160630.7862-1-rakuram.e96@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: f33bb7a6-75c7-4ee4-baae-755ff25d81d6@hartkopp.net References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit On Tue, 9 Dec 2025 at 21:47, Oliver Hartkopp wrote: > > Hello Rakuram, > > On 08.12.25 15:19, Rakuram Eswaran wrote: > > On Fri, 28 Nov 2025 at 00:49, Rakuram Eswaran wrote: > >> > >> This RFC series introduces two changes related to CAN XL support: > >> > >> 1. Add termination configuration support to the dummy_can driver, > >> enabling termination testing with iproute2. > >> > >> 2. Update the SocketCAN documentation to describe CAN XL operation, > >> including MTU changes, bittiming/XBTR settings, mixed-mode > >> behaviour, error signalling, and example iproute2 usage. > >> > >> The goal of this RFC is to validate whether the proposed behaviour and > >> documentation match the expectations for the ongoing CAN XL upstream > >> work. Feedback from the maintainers is highly appreciated. > >> > >> Base commit: > >> commit 30f09200cc4a ("Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux") > >> > >> For testing, this series was applied on top of the following patchsets: > >> > >> * "treewide: remove can_change_mtu()" (Vincent Mailhol) > >> b4 am 20251003-remove-can_change_mtu-v1-1-337f8bc21181@kernel.org > >> git am ./20251003_mailhol_can_treewide_remove_can_change_mtu.mbx > >> > >> * "can: netlink: add CAN XL support" (Marc Kleine-Budde) > >> b4 am 20251126-canxl-v8-0-e7e3eb74f889@pengutronix.de > >> git am ./v8_20251126_mkl_can_netlink_add_can_xl_support.mbx > >> > >> Testing was performed using the iproute2-next tree (canxl-netlink branch), > >> which contains the required CAN XL netlink support for validating > >> these changes. > >> > > > > Hello, > > > > Gentle ping — any feedback on this documentation update patch series? > > Many thanks for the patches. > > The termination patch should be commented by Vincent, who is currently > pretty busy. > Understood. I will wait for Vincent’s feedback on the termination patch. > But as the next merge windows is far away this can be managed in > January. No hurry. > > The documentation is almost fine but still has error-signalling in the > ip options and there's definitely no xl-cc-len16-dlc option. > > Please use the latest iproute2 code to generate the examples: > https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/ > Acknowledged. I will update the examples to align with the current iproute2 tree. I will respin the documentation update accordingly and plan to send the next revision in the first week of January. Best Regards, Rakuram