From patchwork Thu Mar 20 12:22:20 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Erni Sri Satya Vennela X-Patchwork-Id: 14023896 X-Patchwork-Delegate: kuba@kernel.org Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 57525221F39; Thu, 20 Mar 2025 12:22:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742473347; cv=none; b=fP8ynhXBZWEpeoBFp93m0FX+qFW0P8YmhKKIXXkG8/VN8seMHITulzXHv3u2i/+I+rLnVmyBoKuZX1C4qBYlLtuVTsSJQReJdtBSHMsitnSzX4onL2g5Cn9/WFNWdu5HKem8x8y2tvBHfc43uJBuo2t8ToSB7QgkjoA0NpbZLQs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742473347; c=relaxed/simple; bh=4Xlrz8OTPOnn/0Z1PaocUUGP9A0UGMay1iJ4eIfY/iM=; h=From:To:Subject:Date:Message-Id:In-Reply-To:References; b=O29aYg0qQPpXGkeLE3hj3r/YpY5IXaeh2OI/OPh69zCj+vE/p6O5Wq3VjBOOQuZE/HjZYiAR9CPq3NpQwWldcpcJqxWkk584TUcoUQ9xnDHAosv6namp59M55hNbjT0Tr+6OOCpitZbilgWj2RZBMmvPei4IMceAyJLIjHQ6zgA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=p/p8SwWs; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="p/p8SwWs" Received: by linux.microsoft.com (Postfix, from userid 1173) id D68A42116B4D; Thu, 20 Mar 2025 05:22:25 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com D68A42116B4D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1742473345; bh=Xwxv70u6KUTpUivc/cEfPVEIJqdCmQM54B7jfFV6qdE=; h=From:To:Subject:Date:In-Reply-To:References:From; b=p/p8SwWsmZCDFo2MMYaq+sQR56H0RR7SUZLZeXBo0Ta0usOz2s/iBqtUoBxNOMe1T QTtRiruH2pF8qtZ/ss9bBATRObpTahhF0ahmMGARlcKuKPHThlkCSiyKPiS4LWF71H XyJXLjD7SyYVHYE/pVK3Hz+N0InWDqaNYlBe9qsw= From: Erni Sri Satya Vennela To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, longli@microsoft.com, kotaranov@microsoft.com, horms@kernel.org, brett.creeley@amd.com, ernis@linux.microsoft.com, surenb@google.com, schakrabarti@linux.microsoft.com, kent.overstreet@linux.dev, shradhagupta@linux.microsoft.com, erick.archer@outlook.com, rosenp@gmail.com, linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org Subject: [PATCH 2/3] net: mana: Implement set_link_ksettings in ethtool for speed Date: Thu, 20 Mar 2025 05:22:20 -0700 Message-Id: <1742473341-15262-3-git-send-email-ernis@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1742473341-15262-1-git-send-email-ernis@linux.microsoft.com> References: <1742473341-15262-1-git-send-email-ernis@linux.microsoft.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: X-Patchwork-Delegate: kuba@kernel.org Add support for ethtool_set_link_ksettings for mana. Set speed information of the port using ethtool. This feature is not supported by all hardware. Before the change: $ethtool -s enP30832s1 speed 100 >netlink error: Operation not supported $ethtool enP30832s1 >Settings for enP30832s1: Supported ports: [ ] Supported link modes: Not reported Supported pause frame use: No Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: Unknown! Duplex: Full Auto-negotiation: off Port: Other PHYAD: 0 Transceiver: internal Link detected: yes After the change: $ethtool -s enP30832s1 speed 100 $ethtool enP30832s1 >Settings for enP30832s1: Supported ports: [ ] Supported link modes: Not reported Supported pause frame use: No Supports auto-negotiation: No Supported FEC modes: Not reported Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Advertised FEC modes: Not reported Speed: 100Mb/s Duplex: Full Auto-negotiation: off Port: Other PHYAD: 0 Transceiver: internal Link detected: yes Signed-off-by: Erni Sri Satya Vennela Reviewed-by: Haiyang Zhang Reviewed-by: Shradha Gupta --- drivers/net/ethernet/microsoft/mana/mana_en.c | 39 +++++++++++++++++++ .../ethernet/microsoft/mana/mana_ethtool.c | 13 +++++++ include/net/mana/mana.h | 16 ++++++++ 3 files changed, 68 insertions(+) diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c index 5fa8e1e2ff9a..bcc273427423 100644 --- a/drivers/net/ethernet/microsoft/mana/mana_en.c +++ b/drivers/net/ethernet/microsoft/mana/mana_en.c @@ -1203,6 +1203,45 @@ int mana_query_link_cfg(struct mana_port_context *apc) return err; } +int mana_set_bw_clamp(struct mana_port_context *apc, u32 speed) +{ + struct mana_set_bw_clamp_req req = {}; + struct mana_set_bw_clamp_resp resp = {}; + struct net_device *ndev = apc->ndev; + int err; + + mana_gd_init_req_hdr(&req.hdr, MANA_SET_BW_CLAMP, + sizeof(req), sizeof(resp)); + req.vport = apc->port_handle; + req.link_speed = speed; + req.enable_clamping = TRI_STATE_TRUE; + + err = mana_send_request(apc->ac, &req, sizeof(req), &resp, + sizeof(resp)); + + if (err) { + netdev_err(ndev, "Failed to set bandwidth clamp for speed %u, err = %d", + speed, err); + return err; + } + + err = mana_verify_resp_hdr(&resp.hdr, MANA_SET_BW_CLAMP, + sizeof(resp)); + + if (err || resp.hdr.status) { + netdev_err(ndev, "Failed to set bandwidth clamp: %d, 0x%x\n", err, + resp.hdr.status); + if (!err) + err = -EPROTO; + return err; + } + + if (resp.qos_unconfigured) + netdev_info(ndev, "QoS is unconfigured\n"); + + return 0; +} + int mana_create_wq_obj(struct mana_port_context *apc, mana_handle_t vport, u32 wq_type, struct mana_obj_spec *wq_spec, diff --git a/drivers/net/ethernet/microsoft/mana/mana_ethtool.c b/drivers/net/ethernet/microsoft/mana/mana_ethtool.c index 48234a738d26..b29d0fe0a201 100644 --- a/drivers/net/ethernet/microsoft/mana/mana_ethtool.c +++ b/drivers/net/ethernet/microsoft/mana/mana_ethtool.c @@ -439,6 +439,18 @@ static int mana_get_link_ksettings(struct net_device *ndev, return 0; } +static int mana_set_link_ksettings(struct net_device *ndev, + const struct ethtool_link_ksettings *cmd) +{ + struct mana_port_context *apc = netdev_priv(ndev); + int err; + + err = mana_set_bw_clamp(apc, cmd->base.speed); + + apc->speed = (err) ? apc->speed : cmd->base.speed; + return 0; +} + const struct ethtool_ops mana_ethtool_ops = { .get_ethtool_stats = mana_get_ethtool_stats, .get_sset_count = mana_get_sset_count, @@ -453,5 +465,6 @@ const struct ethtool_ops mana_ethtool_ops = { .get_ringparam = mana_get_ringparam, .set_ringparam = mana_set_ringparam, .get_link_ksettings = mana_get_link_ksettings, + .set_link_ksettings = mana_set_link_ksettings, .get_link = ethtool_op_get_link, }; diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h index 5f039ce99ade..b4c66ce9ee3a 100644 --- a/include/net/mana/mana.h +++ b/include/net/mana/mana.h @@ -500,6 +500,7 @@ void mana_chn_setxdp(struct mana_port_context *apc, struct bpf_prog *prog); int mana_bpf(struct net_device *ndev, struct netdev_bpf *bpf); void mana_query_gf_stats(struct mana_port_context *apc); int mana_query_link_cfg(struct mana_port_context *apc); +int mana_set_bw_clamp(struct mana_port_context *apc, u32 speed); int mana_pre_alloc_rxbufs(struct mana_port_context *apc, int mtu, int num_queues); void mana_pre_dealloc_rxbufs(struct mana_port_context *apc); @@ -527,6 +528,7 @@ enum mana_command_code { MANA_CONFIG_VPORT_RX = 0x20007, MANA_QUERY_VPORT_CONFIG = 0x20008, MANA_QUERY_LINK_CONFIG = 0x2000A, + MANA_SET_BW_CLAMP = 0x2000B, /* Privileged commands for the PF mode */ MANA_REGISTER_FILTER = 0x28000, @@ -548,6 +550,20 @@ struct mana_query_link_config_resp { u8 reserved[3]; }; /* HW DATA */ +/* Set Bandwidth Clamp*/ +struct mana_set_bw_clamp_req { + struct gdma_req_hdr hdr; + mana_handle_t vport; + enum TRI_STATE enable_clamping; + u32 link_speed; +}; /* HW DATA */ + +struct mana_set_bw_clamp_resp { + struct gdma_resp_hdr hdr; + bool qos_unconfigured; + u8 reserved[7]; +}; /* HW DATA */ + /* Query Device Configuration */ struct mana_query_device_cfg_req { struct gdma_req_hdr hdr;