From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f171.google.com (mail-pl1-f171.google.com [209.85.214.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9FE5E34C155 for ; Thu, 23 Oct 2025 18:28:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.171 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761244093; cv=none; b=gqsJtbIf70j6kRyNTlNWoeE9oke6xPusZhWWU0kJeqsDP0R8h1REcT+SorA4ZysOPdwVIck7ILIynQPt3pXOv+TJ1PD0j1HppB7YO4Qg5xs2rAl18lZ9NVOzJlnddcdUHOZ3oySUPxiYGkyuAtYL6uP0LGWkmrZYkNQQvhQnkN0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761244093; c=relaxed/simple; bh=/NnsC3/kyQkEuJK5iOUFqzrZwSnxBzzrLIV6TJlSX58=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=NccYy38VguPVUA6vIX75P+3pDXvmakCW2l9hUUNRu1mTnlQfCIPkJ35DU6F5IwycyYhQMTS1bk1946y3e93bDEQ3t0vNHfkC4bDJ61WGg1TtHV5IGdBro/tkLRxZFxTFdxMezfg8YjgIfWLhabWSpttG0oijJeHyV0LdWZvwQQQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=TPRKKDH8; arc=none smtp.client-ip=209.85.214.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="TPRKKDH8" Received: by mail-pl1-f171.google.com with SMTP id d9443c01a7336-290d14e5c9aso14767695ad.3 for ; Thu, 23 Oct 2025 11:28:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1761244087; x=1761848887; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=t/1b6yRMCqBZzs7tcE4MzTOrQu/agnNRge7CXTKa+MI=; b=TPRKKDH8XrBk5rLrPo62mWYsMVyGUT1Dap05tyaLhbEe8BhVhGFYgWX94whDYZI987 5sXL8jHFGMqdCUXNCoTIWrgxnSWyYN2tctS/AW53U1pKM+VkR1hl1O38k0UCk+PLd7Ik Gg1EQh0C80BhpMx8ST+tiQA4O2UIxt5k3lN+gAB4A5+AvPEcrgMLOyb000M3Kz6fcmGY qGpSzUtCOVtP1zxyuBsp2y/ywXm/162dCEUpH1+bgZUWRpEeqjk/iN6ClpCNrCrs2WYH jIg6eaVV3v4V0EBZOG8LtOABMzphoh9ZYmDdG0O76yF0pqQWnyEUGk6d4DEENKsHh/w8 6k7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761244087; x=1761848887; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=t/1b6yRMCqBZzs7tcE4MzTOrQu/agnNRge7CXTKa+MI=; b=HTxuKaQ842w0U6W1HGK2mlQFaMhk86H+OEEPo+pDeLskg7fi5nhA5PrH3yvOvqpAgm x6Ud+DE/Y1tnVzDK1Az4GDl/LSMX7nEJB2MYSD3ZEIYrdKndf+YmIGJoC6nDgtguTX8a Xbj+WcMdbgNs8s/GwyQi8PTV/Z0aOwbqLpGIMFPJ8eE6s1C7Z3/8W1uXGLiXwO4hx9p2 Gu999oxPd0zL0Vmn6y9OZvll9wtOwWRV/Zma68rneOSlmrpje19E4KgSS7fqc4kPAHcA t3Qocti11FWJ7eUMi/qd4FSJOmLigRq8Aswot+Tag92g5gF3a9oaXltNQqOwKMmKOORJ UwOw== X-Forwarded-Encrypted: i=1; AJvYcCU1Em9tMd4A2FjVNAVe7n/eL2CIWSpsUCtK3yegHSSiBKbqNpITjon7ZI5IqVu7m/HyhLRSBSrHAialV1kDF0I=@vger.kernel.org X-Gm-Message-State: AOJu0Yz+INJyee7qVb2tJY9f1bdMEs5XNDT9Hy7fKP5WNOLCpWvomJFx ATXAXCPkzbSoCBjjOAaj39//8AYfukS7XodGNR4aIGJP8vsOASaorKtY X-Gm-Gg: ASbGncuEMa4sBroGmRpFz3RBKgpZ1glLJFDe9LV3bvpzOuk/lQHrUOlf+tarWfwhm57 U2k0bMizmMIWF923TUA+T0ZRdD1hU0nzpr0BicdUwllCSWNLTwJV29fgWcMb8ANmy4HJ3uMIdu5 jOEFaXvUmNjw1Hk1k1nE03u/O1Kc2LEl93Ap4CBTMxyIkrSxJLrz+Xdi6EpiQKCoz/NiQNbk7X3 iYvSnaALa654rYa8QSi1Y+2/7n1Mr++hU8RSme0lPVS6wrBU4joa/goML3yWOtTKgoBV2Ih3lXG IfBR1Ty56yquZpi45pomA+dhJ+Dd94ocARXrwMVC1CGotR8GWCT1c3hnnrOFKV+bg67H3mK0vYx X8nzMF9hR1PgVZmCd1h6WllLNaB0mYw8k4SpNAf2RlwnZUXmj8l+8l7OrnFhw/fZcxPDCi9HfUb 0pkhEGkXWQ X-Google-Smtp-Source: AGHT+IGRrKHIe8i2PewhMjRBhP1W+eQCJR1uY99As6NL8XQQmuNG2L450IKTPePeAvu2qClkS7Jbsg== X-Received: by 2002:a17:902:dad2:b0:293:e5f:85b7 with SMTP id d9443c01a7336-2930e5f9113mr89467435ad.11.1761244086676; Thu, 23 Oct 2025 11:28:06 -0700 (PDT) Received: from localhost ([2a03:2880:2ff:73::]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2946e0f06d5sm30959555ad.82.2025.10.23.11.28.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Oct 2025 11:28:06 -0700 (PDT) From: Bobby Eshleman Date: Thu, 23 Oct 2025 11:27:42 -0700 Subject: [PATCH net-next v8 03/14] vsock: add netns to vsock skb cb Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251023-vsock-vmtest-v8-3-dea984d02bb0@meta.com> References: <20251023-vsock-vmtest-v8-0-dea984d02bb0@meta.com> In-Reply-To: <20251023-vsock-vmtest-v8-0-dea984d02bb0@meta.com> To: Stefano Garzarella , Shuah Khan , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Stefan Hajnoczi , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Bryan Tan , Vishnu Dasa , Broadcom internal kernel review list , Bobby Eshleman Cc: virtualization@lists.linux.dev, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-hyperv@vger.kernel.org, berrange@redhat.com, Bobby Eshleman X-Mailer: b4 0.14.3 From: Bobby Eshleman Add a net pointer and net_mode to the vsock skb and helpers for getting/setting them. When skbs are received the transport needs a way to tell the vsock layer and/or virtio common layer which namespace and what namespace mode the packet belongs to. This will be used by those upper layers for finding the correct socket object. This patch stashes these fields in the skb control buffer. This extends virtio_vsock_skb_cb to 24 bytes: struct virtio_vsock_skb_cb { struct net * net; /* 0 8 */ enum vsock_net_mode net_mode; /* 8 4 */ u32 offset; /* 12 4 */ bool reply; /* 16 1 */ bool tap_delivered; /* 17 1 */ /* size: 24, cachelines: 1, members: 5 */ /* padding: 6 */ /* last cacheline: 24 bytes */ }; Signed-off-by: Bobby Eshleman --- Changes in v7: - rename `orig_net_mode` to `net_mode` - update commit message with a more complete explanation of changes Changes in v5: - some diff context change due to rebase to current net-next --- include/linux/virtio_vsock.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/include/linux/virtio_vsock.h b/include/linux/virtio_vsock.h index 87cf4dcac78a..7f334a32133c 100644 --- a/include/linux/virtio_vsock.h +++ b/include/linux/virtio_vsock.h @@ -10,6 +10,8 @@ #define VIRTIO_VSOCK_SKB_HEADROOM (sizeof(struct virtio_vsock_hdr)) struct virtio_vsock_skb_cb { + struct net *net; + enum vsock_net_mode net_mode; u32 offset; bool reply; bool tap_delivered; @@ -130,6 +132,27 @@ static inline size_t virtio_vsock_skb_len(struct sk_buff *skb) return (size_t)(skb_end_pointer(skb) - skb->head); } +static inline struct net *virtio_vsock_skb_net(struct sk_buff *skb) +{ + return VIRTIO_VSOCK_SKB_CB(skb)->net; +} + +static inline void virtio_vsock_skb_set_net(struct sk_buff *skb, struct net *net) +{ + VIRTIO_VSOCK_SKB_CB(skb)->net = net; +} + +static inline enum vsock_net_mode virtio_vsock_skb_net_mode(struct sk_buff *skb) +{ + return VIRTIO_VSOCK_SKB_CB(skb)->net_mode; +} + +static inline void virtio_vsock_skb_set_net_mode(struct sk_buff *skb, + enum vsock_net_mode net_mode) +{ + VIRTIO_VSOCK_SKB_CB(skb)->net_mode = net_mode; +} + /* Dimension the RX SKB so that the entire thing fits exactly into * a single 4KiB page. This avoids wasting memory due to alloc_skb() * rounding up to the next page order and also means that we -- 2.47.3