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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jonathan Corbet , Richard Henderson , Ivan Kokshaysky , Matt Turner , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Andreas Larsson , Jesper Dangaard Brouer , Ilias Apalodimas , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Arnd Bergmann , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Steffen Klassert , Herbert Xu , David Ahern , Willem de Bruijn , Shuah Khan , Sumit Semwal , =?utf-8?Q?Christian_K=C3=B6nig?= , Bagas Sanjaya , Christoph Hellwig , Nikolay Aleksandrov , Pavel Begunkov , David Wei , Jason Gunthorpe , Yunsheng Lin , Shailend Chand , Harshitha Ramamurthy , Shakeel Butt , Jeroen de Borst , Praveen Kaligineedi Subject: Re: [PATCH net-next v15 12/14] net: add devmem TCP documentation In-Reply-To: <20240628003253.1694510-13-almasrymina@google.com> (Mina Almasry's message of "Fri, 28 Jun 2024 00:32:49 +0000") Date: Fri, 28 Jun 2024 11:09:28 +0100 Message-ID: References: <20240628003253.1694510-1-almasrymina@google.com> <20240628003253.1694510-13-almasrymina@google.com> User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Mina Almasry writes: > + > +The user must bind a dmabuf to any number of RX queues on a given NIC using > +the netlink API:: > + > + /* Bind dmabuf to NIC RX queue 15 */ > + struct netdev_queue *queues; > + queues = malloc(sizeof(*queues) * 1); > + > + queues[0]._present.type = 1; > + queues[0]._present.idx = 1; > + queues[0].type = NETDEV_RX_QUEUE_TYPE_RX; > + queues[0].idx = 15; > + > + *ys = ynl_sock_create(&ynl_netdev_family, &yerr); > + > + req = netdev_bind_rx_req_alloc(); > + netdev_bind_rx_req_set_ifindex(req, 1 /* ifindex */); > + netdev_bind_rx_req_set_dmabuf_fd(req, dmabuf_fd); > + __netdev_bind_rx_req_set_queues(req, queues, n_queue_index); > + > + rsp = netdev_bind_rx(*ys, req); > + > + dmabuf_id = rsp->dmabuf_id; > + > + > +The netlink API returns a dmabuf_id: a unique ID that refers to this dmabuf > +that has been bound. The docs don't mention the unbinding behaviour. Can you add the text from the commit message for patch 3 ?