From nobody Wed Dec 17 22:46:58 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B050C61D90 for ; Tue, 21 Nov 2023 19:14:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230182AbjKUTNK (ORCPT ); Tue, 21 Nov 2023 14:13:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46390 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229495AbjKUTNJ (ORCPT ); Tue, 21 Nov 2023 14:13:09 -0500 Received: from mx0b-0016f401.pphosted.com (mx0a-0016f401.pphosted.com [67.231.148.174]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 81C9991; Tue, 21 Nov 2023 11:13:02 -0800 (PST) Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3ALI8HKM008875; Tue, 21 Nov 2023 11:12:55 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=pfpt0220; bh=AWKC+GczEkhuiGyImuPiTHSlgjHzmEvA5QGEFZps9BA=; b=cXZ1D/3h4P93mDyunsMEDn2UiRv5CkosraWU9trNJw3gWMnbsZ/pTR/4gMw1/+BIiMRl GaFYTwrFbzYnVz4qo631F5+URpNeqw3hgul8hu9Vlv3nT6WlaMCIhnNDvasojhPT+Q5n XmOhjQTY2Nv01enj+nm6WOn6LXowdmcY3VQCWof3oYp7kRa60EjDjuvYrxA8O+bie/yM ruhL10ckUBCP60kJ5jh+b0zUoj7H7auUCMxwEk19WLrpQHHa+tJSMQA/UqAzgrH3vgOy i/xXM/ZkT8o2ABwMhM1+rZmjfA/PHOpPFT+sXfxIb8fdDsuoHvNZJ36cbzweHL9fmXB/ SA== Received: from dc5-exch02.marvell.com ([199.233.59.182]) by mx0a-0016f401.pphosted.com (PPS) with ESMTPS id 3uh1jb87a8-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Tue, 21 Nov 2023 11:12:55 -0800 Received: from DC5-EXCH01.marvell.com (10.69.176.38) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Tue, 21 Nov 2023 11:12:54 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server id 15.0.1497.48 via Frontend Transport; Tue, 21 Nov 2023 11:12:54 -0800 Received: from ubuntu-PowerEdge-T110-II.sclab.marvell.com (unknown [10.106.27.86]) by maili.marvell.com (Postfix) with ESMTP id 226395B6922; Tue, 21 Nov 2023 11:12:54 -0800 (PST) From: Shinas Rasheed To: , CC: , , , , , , , , , , Shinas Rasheed , "Veerasenareddy Burru" , Sathesh Edara , Eric Dumazet Subject: [PATCH net-next v1] octeon_ep: get max rx packet length from firmware Date: Tue, 21 Nov 2023 11:12:23 -0800 Message-ID: <20231121191224.2489474-1-srasheed@marvell.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-ORIG-GUID: eTbUaV7jKAe1Ld-2L-H9UrIGKwgh5hvy X-Proofpoint-GUID: eTbUaV7jKAe1Ld-2L-H9UrIGKwgh5hvy X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-21_10,2023-11-21_01,2023-05-22_02 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Fill max rx packet length value from firmware. Signed-off-by: Shinas Rasheed --- .../marvell/octeon_ep/octep_ctrl_net.c | 18 ++++++++++++++++++ .../marvell/octeon_ep/octep_ctrl_net.h | 9 +++++++++ .../ethernet/marvell/octeon_ep/octep_main.c | 10 +++++++++- 3 files changed, 36 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c b/driv= ers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c index 6dd3d03c1c0f..c9fcebb9bd9b 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c @@ -198,6 +198,24 @@ int octep_ctrl_net_set_mac_addr(struct octep_device *o= ct, int vfid, u8 *addr, return octep_send_mbox_req(oct, &d, wait_for_response); } =20 +int octep_ctrl_net_get_mtu(struct octep_device *oct, int vfid) +{ + struct octep_ctrl_net_wait_data d =3D {0}; + struct octep_ctrl_net_h2f_req *req; + int err; + + req =3D &d.data.req; + init_send_req(&d.msg, req, mtu_sz, vfid); + req->hdr.s.cmd =3D OCTEP_CTRL_NET_H2F_CMD_MTU; + req->mtu.cmd =3D OCTEP_CTRL_NET_CMD_GET; + + err =3D octep_send_mbox_req(oct, &d, true); + if (err < 0) + return err; + + return d.data.resp.mtu.val; +} + int octep_ctrl_net_set_mtu(struct octep_device *oct, int vfid, int mtu, bool wait_for_response) { diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h b/driv= ers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h index 4bb97ad1f1c6..46ddaa5c64d1 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h @@ -282,6 +282,15 @@ int octep_ctrl_net_get_mac_addr(struct octep_device *o= ct, int vfid, u8 *addr); int octep_ctrl_net_set_mac_addr(struct octep_device *oct, int vfid, u8 *ad= dr, bool wait_for_response); =20 +/** Get max MTU from firmware. + * + * @param oct: non-null pointer to struct octep_device. + * @param vfid: Index of virtual function. + * + * return value: mtu on success, -errno on failure. + */ +int octep_ctrl_net_get_mtu(struct octep_device *oct, int vfid); + /** Set mtu in firmware. * * @param oct: non-null pointer to struct octep_device. diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/= net/ethernet/marvell/octeon_ep/octep_main.c index 3cee69b3ac38..f9c539178114 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c @@ -1276,6 +1276,7 @@ static int octep_probe(struct pci_dev *pdev, const st= ruct pci_device_id *ent) { struct octep_device *octep_dev =3D NULL; struct net_device *netdev; + int max_rx_pktlen; int err; =20 err =3D pci_enable_device(pdev); @@ -1346,8 +1347,15 @@ static int octep_probe(struct pci_dev *pdev, const s= truct pci_device_id *ent) =20 netdev->hw_features =3D NETIF_F_SG; netdev->features |=3D netdev->hw_features; + + max_rx_pktlen =3D octep_ctrl_net_get_mtu(octep_dev, OCTEP_CTRL_NET_INVALI= D_VFID); + if (max_rx_pktlen < 0) { + dev_err(&octep_dev->pdev->dev, + "Failed to get max receive packet size; err =3D %d\n", max_rx_pktlen); + goto register_dev_err; + } netdev->min_mtu =3D OCTEP_MIN_MTU; - netdev->max_mtu =3D OCTEP_MAX_MTU; + netdev->max_mtu =3D max_rx_pktlen - (ETH_HLEN + ETH_FCS_LEN); netdev->mtu =3D OCTEP_DEFAULT_MTU; =20 err =3D octep_ctrl_net_get_mac_addr(octep_dev, OCTEP_CTRL_NET_INVALID_VFI= D, --=20 2.25.1