From patchwork Fri Feb 21 00:56:56 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeremy Kerr X-Patchwork-Id: 13984691 Received: from codeconstruct.com.au (pi.codeconstruct.com.au [203.29.241.158]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D5E5E3A8CB; Fri, 21 Feb 2025 00:57:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.29.241.158 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740099430; cv=none; b=ANJU8ect+tcvR8Y26oBXHv9UjVb7AqCCQGWI/vR2mRe80aPqd1WGj/31XZ8HAUhdFcb4Nx+Zttq3CJh0oRo3qr5CJy81mf/a2BmhjC4vc4jkJEgaYSwhhDEK1x/WeaeWWE+C3oJ/Hj++msGaWnuZyTsds9T7LOSFX0RryFnSu7A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740099430; c=relaxed/simple; bh=rtrAeCsXXoCUpu9+jSYoMdLZOLlxltcO71tPwj8qZS4=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=Hvzgr+CzOfSrUhbyIIC/++iw/CGQEu/CKgLaYla9HnB+bBN0EUj8oxPRQNKTbNuaCtcVYmHn8FlaHFkWb3YlJD5zEueu1L3pR9uPfnvH1o4eTOb0uS6ipS2y5QKY3QFumIBcPUIIdrkH4kC3zGUhn59iVgMKxIEytiLS72UUj3g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=codeconstruct.com.au; spf=pass smtp.mailfrom=codeconstruct.com.au; dkim=pass (2048-bit key) header.d=codeconstruct.com.au header.i=@codeconstruct.com.au header.b=CZLqLx8T; arc=none smtp.client-ip=203.29.241.158 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=codeconstruct.com.au Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=codeconstruct.com.au Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=codeconstruct.com.au header.i=@codeconstruct.com.au header.b="CZLqLx8T" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=codeconstruct.com.au; s=2022a; t=1740099426; bh=riXhQfcYCweNUzqtSXew8PnVpn+jAe3Ir3ZEIQHjWEg=; h=From:Subject:Date:To:Cc; b=CZLqLx8TrlnggiAVBNPIJwELOlO2qLzrEfa48x62mCxV0cOwpznhEc1In9B85+J1S is0rf+lCFqjwch3uJFCIQpRB9iLp6elvkMskSr32oHWdVcfuRasD4TrwpUOLXjuScm t8QyP33e8q1Cd1jtojGHh+STsX/3vNXZIXR5UlviECVSxDdVQ5eWFtaXeGb11/Aq1k qDd16xLg5rMo1U9wffLHuZZGuUZuNNGJIYUsvyXln/3FJCQprQapAnKi1Y2fZn7DFi TEeT5DlXhDvfIaz0l9Q+aAaDSz5SRSTJ+9e+46nkCdaWosjbumf8Rz0n+abn0cMFJm VBDB7BfQbLH2A== Received: by codeconstruct.com.au (Postfix, from userid 10000) id 5D6BC76B8A; Fri, 21 Feb 2025 08:57:06 +0800 (AWST) From: Jeremy Kerr Subject: [PATCH net-next v3 0/2] mctp: Add MCTP-over-USB hardware transport binding Date: Fri, 21 Feb 2025 08:56:56 +0800 Message-Id: <20250221-dev-mctp-usb-v3-0-3353030fe9cc@codeconstruct.com.au> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAFjPt2cC/3XNQQ6DIBCF4auYWRcDqFi76j2aLiiMlYVgAImN8 e4lrJqmXb78mW92COgNBrhUO3hMJhhn82hOFahJ2icSo/MGTnlHORVEYyKzigtZw4OobtAoc2q GDvLJ4nE0W+FuYDESi1uEey6TCdH5V/mTWOm/ycQIJWfWds2IXEjBrsppVM6G6FcVa+XmWq7FT PzDYfzL4dnpBYo+Z92L9o9zHMcb0P/aKgUBAAA= To: Matt Johnston , Greg Kroah-Hartman , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: netdev@vger.kernel.org, linux-usb@vger.kernel.org, Santosh Puranik X-Mailer: b4 0.14.0 X-Patchwork-Delegate: kuba@kernel.org Add an implementation of the DMTF standard DSP0283, providing an MCTP channel over high-speed USB. This is a fairly trivial first implementation, in that we only submit one tx and one rx URB at a time. We do accept multi-packet transfers, but do not yet generate them on transmit. Of course, questions and comments are most welcome, particularly on the USB interfaces. Signed-off-by: Jeremy Kerr --- Changes in v3: - Use GPL2 consistently, rather that 2+ - Changes from Jakub Kicinsk: u8 over __u8 - Changes from Jakub Kicinsk: use dstats helpers - Changes from Jakub Kicinsk: skb_cow_head before skb_push - recovery mechanism for rx alloc - Link to v2: https://lore.kernel.org/r/20250212-dev-mctp-usb-v2-0-76e67025d764@codeconstruct.com.au Changes in v2: - greg k-h claims that it is 2025; update copyright year - Add spec references - Clean up dbg/warn output - Changes from Oliver Neukum: drop usbdev ref, avoid a GFP_ATOMIC alloc - Changes from Simon Horman: do rx stats before netif_rx - Add module metadata - specify phys binding type - Link to v1: https://lore.kernel.org/r/20250206-dev-mctp-usb-v1-0-81453fe26a61@codeconstruct.com.au --- Jeremy Kerr (2): usb: Add base USB MCTP definitions net: mctp: Add MCTP USB transport driver MAINTAINERS | 1 + drivers/net/mctp/Kconfig | 10 ++ drivers/net/mctp/Makefile | 1 + drivers/net/mctp/mctp-usb.c | 385 +++++++++++++++++++++++++++++++++++++++++++ include/linux/usb/mctp-usb.h | 30 ++++ include/uapi/linux/usb/ch9.h | 1 + 6 files changed, 428 insertions(+) --- base-commit: be1d2a1b151deb195cd9749988163aa26ad6f616 change-id: 20250206-dev-mctp-usb-c59dea025395 Best regards,