From nobody Mon Oct 6 04:57:05 2025 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 C8B9D2E06DC; Thu, 24 Jul 2025 13:51:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753365103; cv=none; b=eDIsUg60Qppx+btnk0DMHPfV5quNNJHb/ARz9BuM0/WioyuvVgs2k9eekSTbTZos/jOiGklyXhnZonGErPmstJPx92tbt/1zRwoXboALcx/7DxRm8VbCjoiAAsCLv4amImp9smn7ZKkSmJqBBImZKmj9R458zsyPiEF91RFgakU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753365103; c=relaxed/simple; bh=YYNHiQKKHckLkqpA+dzLt60GYuE11vc7QFncysOZvno=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=cUVlt/b8F7NdHeZY/joWhd2KCP+mPJuskIQwtZPTWylbBpdXvgQoL1A+s02SueObms+Cvjdny2fWgUjSBDW6nPEjDYO3OCYhd1LLMXiJzx/fe0NiqfcZ8EY8Nqeo6447yCwVzlET9vCCSfAS2ZYMyuEtDhU0pLV+wnnohdXYrKo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=NjnhSo5X; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="NjnhSo5X" Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 56O6ddVL028406; Thu, 24 Jul 2025 13:51:30 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= 9R30NjnW1XkveD9AQU4/KblfksuaSGAowoFXnO6ISs8=; b=NjnhSo5XHtZt2SlE YBIuEV+vG7Z+fO6Ax7TMSFTPC31O7QdOfg3+O6YNePNB+fjaoFRhgPJYqMPDNurj YPBcUPjk6uExPoP6ACNlharlGgTXfBkSSY2DPdz7BPJpYOiqeWIRRYItemofkJqd UXvR6RMKGluRmBVKr8Jei8/m/O248eil1vN1huT5luxmRzrPQSdAXSWdeDG+0iP/ Zfk9p4+ykrje0aXZnNRl9ha19p77PaPzOTIKKqBcBjkwE+m2Mfa0Jb81e20LVijZ CtLhyhLheb+3GZviJa4RRi13dUk3O8b2mDOWa5AEWSHseNRTGb/bhgFhAE/J89Va AJ5sOw== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 483frk17m4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 24 Jul 2025 13:51:30 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 56ODpTaT002866 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 24 Jul 2025 13:51:29 GMT Received: from hu-vpernami-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Thu, 24 Jul 2025 06:51:26 -0700 From: Vivek.Pernamitta@quicinc.com Date: Thu, 24 Jul 2025 19:21:17 +0530 Subject: [PATCH 1/4] net: mhi: Rename MHI interface to improve clarity 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: quoted-printable Message-ID: <20250724-b4-eth_us-v1-1-4dff04a9a128@quicinc.com> References: <20250724-b4-eth_us-v1-0-4dff04a9a128@quicinc.com> In-Reply-To: <20250724-b4-eth_us-v1-0-4dff04a9a128@quicinc.com> To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Manivannan Sadhasivam CC: , , , , Vivek Pernamitta X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1753365082; l=1871; i=; s=20241114; h=from:subject:message-id; bh=W2KSa4SU78w/Jr0jZKTFlX07+cK0V3U6pDN38+bSuHU=; b=KsL9ICDcgG31sblOraD+SOL8sh3r7tcQkItu1KJRU+IbcMRvP/FPHvK5fbQ21vUULc+FJMnCT iIu6JeN3G8rASyUgTJQt0Gab4vW5KwpNbNFYQgkLCVStaAJdnn/ryqz X-Developer-Key: i=; a=ed25519; pk=HDwn8xReb8K52LA6/CJc6S9Zik8gDCZ5LO4Cypff71Y= X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzI0MDEwNSBTYWx0ZWRfX1rCftQdZmCka hvXnZKskw5qq4shI3g6+I/neR0Q5qCEtexeLqv/9RgZ8Y9lu8+DAacukl4CoVE4oilzQpDUDDkk AMRxcUp1wfl1EBUHdf7zvp5PINWN3mqCSD3XLLJcSjPQVBJk5NdUPcc2aIppQARqlqCSH+aZVE2 5xIYDNvTCt3QlVjaoHQg8gQHyGvHzIkbsHHHsB4p92nRabGXiV9qHb5DUz1eW87IHwH/WehroCo 5ZxZG1HmktpuRSpA93TSswwG0BlyMtmM9Fmf3AOacRai5H9c2HKgYwMu/tObXgr3qIJDg0ZlMTE M81ZpCzRez8TxwHTeZxs88Fgk0xmgsptdQPgJFmRz+ExKyhG0Fgs1/RSHncjs5Nlom0nGJPgdXu K5b9A0jRHd2rGgISkRFe8lvgEBB2BAo0n6eqXRKOQvVxVLvBHTML99CE4cV8Ex4mFvWnByec X-Proofpoint-GUID: 3KD4lm3W75-7VKxvPYA7sWEBHC9NqaTx X-Authority-Analysis: v=2.4 cv=WbsMa1hX c=1 sm=1 tr=0 ts=68823a62 cx=c_pps a=ouPCqIW2jiPt+lZRy3xVPw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=GEpy-HfZoHoA:10 a=IkcTkHD0fZMA:10 a=Wb1JkmetP80A:10 a=COk6AnOGAAAA:8 a=uH-DrFrSxwLtvk6aROoA:9 a=QEXdDO2ut3YA:10 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-ORIG-GUID: 3KD4lm3W75-7VKxvPYA7sWEBHC9NqaTx X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-24_02,2025-07-24_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 impostorscore=0 mlxlogscore=789 bulkscore=0 spamscore=0 priorityscore=1501 mlxscore=0 suspectscore=0 malwarescore=0 clxscore=1015 adultscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507240105 From: Vivek Pernamitta Rename the MHI network interface to include the device name, improving clarity when multiple MHI controllers are connected. Currently, MHI NET device interfaces are created as mhi_swip/ mhi_hwip for each channel, making it difficult to distinguish between channels when multiple EP/MHI controllers are connected. Rename the MHI interface to include the device name, for example: - Channel IP_SW0 for the 1st MHI controller will be named mhi0_IP_SW0. - Channel IP_SW0 for the 2nd MHI controller will be named mhi1_IP_SW0. - Channel IP_HW0 for the 1st MHI controller will be named mhi0_IP_HW0. Signed-off-by: Vivek Pernamitta --- drivers/net/mhi_net.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/net/mhi_net.c b/drivers/net/mhi_net.c index ae169929a9d8e449b5a427993abf68e8d032fae2..08ab67f9a769ec64e1007853e47= 743003a197ec4 100644 --- a/drivers/net/mhi_net.c +++ b/drivers/net/mhi_net.c @@ -351,11 +351,20 @@ static void mhi_net_dellink(struct mhi_device *mhi_de= v, struct net_device *ndev) static int mhi_net_probe(struct mhi_device *mhi_dev, const struct mhi_device_id *id) { - const struct mhi_device_info *info =3D (struct mhi_device_info *)id->driv= er_data; + const struct mhi_device_info *info; + struct device *dev =3D &mhi_dev->dev; + char netname[IFNAMSIZ] =3D {0}; struct net_device *ndev; int err; =20 - ndev =3D alloc_netdev(sizeof(struct mhi_net_dev), info->netname, + info =3D (struct mhi_device_info *)id->driver_data; + + if (snprintf(netname, sizeof(netname), "%s", dev_name(dev)) >=3D IFNAMSIZ= ) { + dev_err(dev, "Invalid interface name: '%s'\n", netname); 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Manivannan Sadhasivam CC: , , , , Vivek Pernamitta X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1753365082; l=5357; i=; s=20241114; h=from:subject:message-id; bh=N96O4hZS2+R9j1oeB5QWPq5b0CwbgAlHsZFldKvCkIY=; b=SAIZ4HojucfGDSNruonsoyC3En7A0jViJbke5cnfThDQYOxqie5NAe9WIilokStktRr392O3z Tvoxxdu/mEpB+INdXEnjaUk1E44AOpCINjwoRM+11H+4rCMaLYXzTfh X-Developer-Key: i=; a=ed25519; pk=HDwn8xReb8K52LA6/CJc6S9Zik8gDCZ5LO4Cypff71Y= X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: uS61mD23xbIsAp_IX50wc-k0smzVwWpb X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzI0MDEwNSBTYWx0ZWRfXwdL48Ck21AhH RA+MlUWe1x+6OwR9gstGeyzwyHoCWor6pnkduO1w6i/3rKRWiYO0+AgyqIsNY4sN7T056W/F9zd eGLFuIhvt/ubBu3YOoqnGCx9hWjuwG8XGUivHVZUmCXXdxEe8Z/1eQw0ov4SnYCmErx7SdSHUGw L39oz3jME4fQxtaMpW+kvIH6nHxhyFCsDKrT4KmZyk6IcHb5iXx82iXKKvrhbf8aGf4lMkRqK8I zwDLcdZadYALWHbYJe5eLuU9N8iR7sYBpqzQWquYy8HlnI7vLksCrMJTNSLiQwuS9u2L1d0flSA 4p9efKKG+AIMM0PUd7zrAcG4aDXm9FUbagUa50Pk55QPp4E2tRvZ/vzzBK+Ir7lnkc23LJBYqlH h8FMoxAbFbGs3k66963RTAcrexUGaRbtH5GUmIAI0azrMOhKrOlmnlnDeliFgj52hhOu608D X-Authority-Analysis: v=2.4 cv=E8/Npbdl c=1 sm=1 tr=0 ts=68823a66 cx=c_pps a=ouPCqIW2jiPt+lZRy3xVPw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=GEpy-HfZoHoA:10 a=IkcTkHD0fZMA:10 a=Wb1JkmetP80A:10 a=COk6AnOGAAAA:8 a=EOBA0zxbHDKDm-sSy-AA:9 a=QEXdDO2ut3YA:10 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-ORIG-GUID: uS61mD23xbIsAp_IX50wc-k0smzVwWpb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-24_02,2025-07-24_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 malwarescore=0 spamscore=0 bulkscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 suspectscore=0 clxscore=1015 phishscore=0 mlxlogscore=999 mlxscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507240105 From: Vivek Pernamitta Currently, we only have support for the NET driver. This update allows a new client to be configured as an Ethernet type over MHI by setting "mhi_device_info.ethernet_if =3D true". A new interface for Ethernet will be created with _. Signed-off-by: Vivek Pernamitta --- drivers/net/mhi_net.c | 84 +++++++++++++++++++++++++++++++++++++++++++----= ---- 1 file changed, 71 insertions(+), 13 deletions(-) diff --git a/drivers/net/mhi_net.c b/drivers/net/mhi_net.c index 08ab67f9a769ec64e1007853e47743003a197ec4..ba65abcee32a253fc1eb9d75f16= 93734f4d53ee3 100644 --- a/drivers/net/mhi_net.c +++ b/drivers/net/mhi_net.c @@ -11,6 +11,7 @@ #include #include #include +#include =20 #define MHI_NET_MIN_MTU ETH_MIN_MTU #define MHI_NET_MAX_MTU 0xffff @@ -38,10 +39,12 @@ struct mhi_net_dev { u32 rx_queue_sz; int msg_enable; unsigned int mru; + bool ethernet_if; }; =20 struct mhi_device_info { const char *netname; + bool ethernet_if; }; =20 static int mhi_ndo_open(struct net_device *ndev) @@ -119,11 +122,37 @@ static void mhi_ndo_get_stats64(struct net_device *nd= ev, } while (u64_stats_fetch_retry(&mhi_netdev->stats.tx_syncp, start)); } =20 +static int mhi_mac_address(struct net_device *dev, void *p) +{ + int ret; + + if (dev->type =3D=3D ARPHRD_ETHER) { + ret =3D eth_mac_addr(dev, p); + return ret; + } + + return 0; +} + +static int mhi_validate_address(struct net_device *dev) +{ + int ret; + + if (dev->type =3D=3D ARPHRD_ETHER) { + ret =3D eth_validate_addr(dev); + return ret; + } + + return 0; +} + static const struct net_device_ops mhi_netdev_ops =3D { .ndo_open =3D mhi_ndo_open, .ndo_stop =3D mhi_ndo_stop, .ndo_start_xmit =3D mhi_ndo_xmit, .ndo_get_stats64 =3D mhi_ndo_get_stats64, + .ndo_set_mac_address =3D mhi_mac_address, + .ndo_validate_addr =3D mhi_validate_address, }; =20 static void mhi_net_setup(struct net_device *ndev) @@ -140,6 +169,14 @@ static void mhi_net_setup(struct net_device *ndev) ndev->tx_queue_len =3D 1000; } =20 +static void mhi_ethernet_setup(struct net_device *ndev) +{ + ndev->netdev_ops =3D &mhi_netdev_ops; + ether_setup(ndev); + ndev->min_mtu =3D ETH_MIN_MTU; + ndev->max_mtu =3D ETH_MAX_MTU; +} + static struct sk_buff *mhi_net_skb_agg(struct mhi_net_dev *mhi_netdev, struct sk_buff *skb) { @@ -209,16 +246,22 @@ static void mhi_net_dl_callback(struct mhi_device *mh= i_dev, mhi_netdev->skbagg_head =3D NULL; } =20 - switch (skb->data[0] & 0xf0) { - case 0x40: - skb->protocol =3D htons(ETH_P_IP); - break; - case 0x60: - skb->protocol =3D htons(ETH_P_IPV6); - break; - default: - skb->protocol =3D htons(ETH_P_MAP); - break; + if (mhi_netdev->ethernet_if) { + skb_copy_to_linear_data(skb, skb->data, + mhi_res->bytes_xferd); + skb->protocol =3D eth_type_trans(skb, mhi_netdev->ndev); + } else { + switch (skb->data[0] & 0xf0) { + case 0x40: + skb->protocol =3D htons(ETH_P_IP); + break; + case 0x60: + skb->protocol =3D htons(ETH_P_IPV6); + break; + default: + skb->protocol =3D htons(ETH_P_MAP); + break; + } } =20 u64_stats_update_begin(&mhi_netdev->stats.rx_syncp); @@ -301,11 +344,17 @@ static void mhi_net_rx_refill_work(struct work_struct= *work) schedule_delayed_work(&mhi_netdev->rx_refill, HZ / 2); } =20 -static int mhi_net_newlink(struct mhi_device *mhi_dev, struct net_device *= ndev) +static int mhi_net_newlink(struct mhi_device *mhi_dev, struct net_device *= ndev, bool eth_dev) { struct mhi_net_dev *mhi_netdev; int err; =20 + if (eth_dev) { + eth_hw_addr_random(ndev); + if (!is_valid_ether_addr(ndev->dev_addr)) + return -EADDRNOTAVAIL; + } + mhi_netdev =3D netdev_priv(ndev); =20 dev_set_drvdata(&mhi_dev->dev, mhi_netdev); @@ -313,6 +362,7 @@ static int mhi_net_newlink(struct mhi_device *mhi_dev, = struct net_device *ndev) mhi_netdev->mdev =3D mhi_dev; mhi_netdev->skbagg_head =3D NULL; mhi_netdev->mru =3D mhi_dev->mhi_cntrl->mru; + mhi_netdev->ethernet_if =3D eth_dev; =20 INIT_DELAYED_WORK(&mhi_netdev->rx_refill, mhi_net_rx_refill_work); u64_stats_init(&mhi_netdev->stats.rx_syncp); @@ -365,13 +415,14 @@ static int mhi_net_probe(struct mhi_device *mhi_dev, } =20 ndev =3D alloc_netdev(sizeof(struct mhi_net_dev), netname, - NET_NAME_PREDICTABLE, mhi_net_setup); + NET_NAME_PREDICTABLE, info->ethernet_if ? 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Signed-off-by: Vivek Pernamitta --- drivers/bus/mhi/host/pci_generic.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_= generic.c index 4edb5bb476baf02af02aed00be0d6bacf9e92634..1527e0b5ac24bee5d99a36ef6ab= 47ed619e77db9 100644 --- a/drivers/bus/mhi/host/pci_generic.c +++ b/drivers/bus/mhi/host/pci_generic.c @@ -263,6 +263,13 @@ static const struct mhi_channel_config mhi_qcom_qdu100= _channels[] =3D { MHI_CHANNEL_CONFIG_DL(41, "MHI_PHC", 32, 4), MHI_CHANNEL_CONFIG_UL(46, "IP_SW0", 256, 5), MHI_CHANNEL_CONFIG_DL(47, "IP_SW0", 256, 5), + MHI_CHANNEL_CONFIG_UL(48, "IP_SW1", 256, 6), + MHI_CHANNEL_CONFIG_DL(49, "IP_SW1", 256, 6), + MHI_CHANNEL_CONFIG_UL(50, "IP_ETH0", 256, 7), + MHI_CHANNEL_CONFIG_DL(51, "IP_ETH0", 256, 7), + MHI_CHANNEL_CONFIG_UL(52, "IP_ETH1", 256, 8), + MHI_CHANNEL_CONFIG_DL(53, "IP_ETH1", 256, 8), + }; =20 static struct mhi_event_config mhi_qcom_qdu100_events[] =3D { @@ -278,6 +285,7 @@ static struct mhi_event_config mhi_qcom_qdu100_events[]= =3D { MHI_EVENT_CONFIG_SW_DATA(5, 512), MHI_EVENT_CONFIG_SW_DATA(6, 512), MHI_EVENT_CONFIG_SW_DATA(7, 512), + MHI_EVENT_CONFIG_SW_DATA(8, 512), }; =20 static const struct mhi_controller_config mhi_qcom_qdu100_config =3D { --=20 2.34.1