From nobody Tue Dec 16 18:21:36 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 980D8C4167B for ; Thu, 30 Nov 2023 08:00:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344778AbjK3H7w (ORCPT ); Thu, 30 Nov 2023 02:59:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44006 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235041AbjK3H7e (ORCPT ); Thu, 30 Nov 2023 02:59:34 -0500 Received: from mail-pl1-x630.google.com (mail-pl1-x630.google.com [IPv6:2607:f8b0:4864:20::630]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D5711BE4 for ; Wed, 29 Nov 2023 23:59:05 -0800 (PST) Received: by mail-pl1-x630.google.com with SMTP id d9443c01a7336-1cc9b626a96so6548425ad.2 for ; Wed, 29 Nov 2023 23:59:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1701331145; x=1701935945; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=KlByuks1Jx+Wl9b3Tee/pDpTmzdOczE9maWDQUbD5Y8=; b=CWpSaIQtdtNrtBT0ysc+EU4CFV1Wb/GSqwbrS8Yo2TfyRvdfd63jJ+nXiFVYmS6+kI aUI+qo+yhqCaD30bbOInqca+bN182y4gjVgRJwDZcizntGor1SkEhINpRIdUX8APmi8F 0GyzPHT6+fZ09bGMnql19xEdanHUohFPoWXLPPMbAgvedImzBQEv9r+OMng9TK1pOuCA XuV+YLqbjG/6+TX0rGgN6nsS2+kVOGRxaE5Sq7AyY0BGEsc5LhxfY0Bhv08wAcL5NUqx ppAc70pM+topRDsQGeeO5IhQ51UsLetN/T4i7TdIbMHU4zLpdbxD0dpoez9e4QkUfMJc 3b2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701331145; x=1701935945; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=KlByuks1Jx+Wl9b3Tee/pDpTmzdOczE9maWDQUbD5Y8=; b=jd83CwSYJZHo0HmXyAwWrLpKdcK9m/rxlJn4Ct+eoquXFg2wYA7GMzxXPFIUtXSkT0 OHFeJmMVvhzT1ypoQd7KcLhWSfzIUUZwzhsSpHBXYHg6M4JsG8dcCFkVXzKchK1hqxhJ CWbB7cwPquluAoLy5DpZzO/qbVVyq5xz9OVe1JkWt+5odwNFC7ze5jQNZzHKl/WLB69S NKQcRTLh7svJB7f6Ol26F7SpNZm1AuK255wOSlEW023NuDOMIP5ttX8J2SfpmAkRlLGD I1gltEhF/LxJm3U8yqS3T/3cXisQPxZWPtEfd9OreWYyg4qPF1catpq3lRlwgTP2bVYv QJIA== X-Gm-Message-State: AOJu0Yz1NV/2Vn6vUxIYDObCRF3G9e8SON2UUE3i/BqF70kjqVx8dJFh B3a4jK1F1K5rtYKTkzbqIt1/xg== X-Google-Smtp-Source: AGHT+IFExjE3BDEku4ZHInfO3rmuTiYxdr2UmNotXjtt51WP3MH/kZc7YhCAB/c3UDm5ZFP16/KJKQ== X-Received: by 2002:a17:903:2311:b0:1cf:8e0e:43d5 with SMTP id d17-20020a170903231100b001cf8e0e43d5mr24705887plh.6.1701331144990; Wed, 29 Nov 2023 23:59:04 -0800 (PST) Received: from C02F52LSML85.bytedance.net ([203.208.167.146]) by smtp.gmail.com with ESMTPSA id f13-20020a170902ce8d00b001cffb969683sm671756plg.174.2023.11.29.23.59.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Nov 2023 23:59:04 -0800 (PST) From: Feng zhou To: daniel@iogearbox.net, razor@blackwall.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, yangzhenze@bytedance.com, wangdongdong.6@bytedance.com, tangchen.1@bytedance.com, zhoufeng.zf@bytedance.com Subject: [PATCH bpf-next] netkit: Add some ethtool ops to provide information to user Date: Thu, 30 Nov 2023 15:58:44 +0800 Message-Id: <20231130075844.52932-1-zhoufeng.zf@bytedance.com> X-Mailer: git-send-email 2.39.2 (Apple Git-143) MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Feng Zhou Add get_strings, get_sset_count, get_ethtool_stats to get peer ifindex. ethtool -S nk1 NIC statistics: peer_ifindex: 36 Add get_link, get_link_ksettings to get link stat. ethtool nk1 Settings for nk1: ... Link detected: yes Add get_ts_info. ethtool -T nk1 Time stamping parameters for nk1: ... Signed-off-by: Feng Zhou --- drivers/net/netkit.c | 53 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/drivers/net/netkit.c b/drivers/net/netkit.c index 97bd6705c241..1a5199568a07 100644 --- a/drivers/net/netkit.c +++ b/drivers/net/netkit.c @@ -34,6 +34,12 @@ struct netkit_link { u32 location; }; =20 +static struct { + const char string[ETH_GSTRING_LEN]; +} ethtool_stats_keys[] =3D { + { "peer_ifindex" }, +}; + static __always_inline int netkit_run(const struct bpf_mprog_entry *entry, struct sk_buff *skb, enum netkit_action ret) @@ -211,8 +217,55 @@ static void netkit_get_drvinfo(struct net_device *dev, strscpy(info->driver, DRV_NAME, sizeof(info->driver)); } =20 +static void netkit_get_strings(struct net_device *dev, u32 stringset, u8 *= buf) +{ + u8 *p =3D buf; + + switch (stringset) { + case ETH_SS_STATS: + memcpy(p, ðtool_stats_keys, sizeof(ethtool_stats_keys)); + p +=3D sizeof(ethtool_stats_keys); + break; + } +} + +static int netkit_get_sset_count(struct net_device *dev, int sset) +{ + switch (sset) { + case ETH_SS_STATS: + return ARRAY_SIZE(ethtool_stats_keys); + default: + return -EOPNOTSUPP; + } +} + +static void netkit_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats *stats, u64 *data) +{ + struct netkit *nk =3D netkit_priv(dev); + struct net_device *peer =3D rtnl_dereference(nk->peer); + + data[0] =3D peer ? peer->ifindex : 0; +} + +static int netkit_get_link_ksettings(struct net_device *dev, + struct ethtool_link_ksettings *cmd) +{ + cmd->base.speed =3D SPEED_10000; + cmd->base.duplex =3D DUPLEX_FULL; + cmd->base.port =3D PORT_TP; + cmd->base.autoneg =3D AUTONEG_DISABLE; + return 0; +} + static const struct ethtool_ops netkit_ethtool_ops =3D { .get_drvinfo =3D netkit_get_drvinfo, + .get_link =3D ethtool_op_get_link, + .get_strings =3D netkit_get_strings, + .get_sset_count =3D netkit_get_sset_count, + .get_ethtool_stats =3D netkit_get_ethtool_stats, + .get_link_ksettings =3D netkit_get_link_ksettings, + .get_ts_info =3D ethtool_op_get_ts_info, }; =20 static void netkit_setup(struct net_device *dev) --=20 2.30.2