From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f73.google.com (mail-oo1-f73.google.com [209.85.161.73]) (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 44D2247AF51 for ; Fri, 27 Feb 2026 23:39:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772235578; cv=none; b=NSjLOxQOMIR3K6DewtX8lR3j98GwCSmEOAO9M/ywAcgG6oP4JGIlyZo3/eZW319jjrznmxfiYZmF03dyD6Cr0zFbqpCh37sIbP2vrH9wdUCbhjllp7tZY/7zzJ7rgyQwfCPY1HYRJKN3rzZZRTV4yBzOz5waXdAiWROu05Z6jVc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772235578; c=relaxed/simple; bh=4t42tWvrlKcV4lvYfuVx3UTtWZAafmp91JTe6pU7yS0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=kJMaHQn/Nh2bSn3z+9N7XVYdbX7SWudcjhmYMJk5ksIjMmp5H/RRfoHgyQsON/mCVKboik9yLVrdNVV/Sqx6hgBATtGlqilxwePKr0J/2Av87y4i6Kb3nguVlYpncDg4Te/Cx3qBYtIAMKx3zY5A/5bautbuE4NjrYcq9oS4ius= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--rananta.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=ELvyygpm; arc=none smtp.client-ip=209.85.161.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--rananta.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="ELvyygpm" Received: by mail-oo1-f73.google.com with SMTP id 006d021491bc7-679a47a1febso55621587eaf.3 for ; Fri, 27 Feb 2026 15:39:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1772235576; x=1772840376; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=QW1ukqnI7vV/78Yh9+DpzQAxrAq0/IU7SQ5b40XVy3Q=; b=ELvyygpmLKdiZO1WekzAOmvG4gXieEnByFL2Nxnri7I39lwgHObdzP+HzPteYLMafF aZB2hukNtC2xN0oP5FCj661ORCp4Dwyara797gqrWpfVqD3fy7pBWxREJPfeXh9RqQ3U V4xF9ybUSeixVpDUgHYStoERE/i5UiB5Sk2ZwejMAPuVKX5AsMvxa35JjYalMf4JSa83 /nFGzt6G6GnrXSB7yCmz0w4+pRlyyoRAAxsWtPOHbUmSO1kc+eYfVVsDBDjQKTLuV+qr oTSsdppgLU0w8kKEcNjKmz5SExJG/peFvcxk74HpGSSRFAfh0vJEurS5IF7hvv+B4eG3 v1zA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772235576; x=1772840376; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=QW1ukqnI7vV/78Yh9+DpzQAxrAq0/IU7SQ5b40XVy3Q=; b=AXeLZXtt2+17u9noA0twm/llvMNWtbbc1NzmJ/Yiy7mLCTi8Nuk+ZeN1MHCmLaOt8b dMYgCnVw3dD/oPzP44CAj33HpsyQ3/f3zvkqhr2yv+SKkJjGF/FKUfrHnsK+vUneNWhK dST98kKAiCvvuL2yc3WVdgT1QOD/6kxctDtkd0C31q5/A77qqYMIh4XIgZi6mDPSMOZM icWmmrJX+vCSSEs2/WiXAyTZpRo1j81FeBp4jCmNPniX15RkkSiabIfC51o8RMv37FLu InSbZQVoK1hG6OpgWgTTcPBIy3ONswpYkGbggNOgu9xazad1pB2HbANu0pVaOD73p+9B Vt6w== X-Forwarded-Encrypted: i=1; AJvYcCUhY1psX+HbGIalveTxQfQIJnvwfWyXr7Mve5sIuhEef5wU5Tp/AcoT3yC3jb1lY1eLD20=@vger.kernel.org X-Gm-Message-State: AOJu0Yw9YNElENcTwSaVBSNWbM3E1tQpzMdBuQ6F0mKwY3qAAA3v7/dX 1W9d8ZLzHC0zxCkaUQNBGNjnhVuCpJBMcoL49jbo4o+9sOk21jTQTK8sxd3s+ShRFSh9xFB46Kd jjRCK8JnPnw== X-Received: from jabgl48.prod.google.com ([2002:a05:6638:6af0:b0:5b7:2497:50be]) (user=rananta job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6820:81d0:b0:679:be5f:afcc with SMTP id 006d021491bc7-679fae0a965mr2888759eaf.19.1772235576140; Fri, 27 Feb 2026 15:39:36 -0800 (PST) Date: Fri, 27 Feb 2026 23:39:26 +0000 In-Reply-To: <20260227233928.84530-1-rananta@google.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260227233928.84530-1-rananta@google.com> X-Mailer: git-send-email 2.53.0.473.g4a7958ca14-goog Message-ID: <20260227233928.84530-7-rananta@google.com> Subject: [PATCH v5 6/8] vfio: selftests: Add helper to set/override a vf_token From: Raghavendra Rao Ananta To: David Matlack , Alex Williamson Cc: Vipin Sharma , Josh Hilke , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Raghavendra Rao Ananta Content-Type: text/plain; charset="UTF-8" Add a helper function, vfio_device_set_vf_token(), to set or override a vf_token. Not only at init, but a vf_token can also be set via the VFIO_DEVICE_FEATURE ioctl, by setting the VFIO_DEVICE_FEATURE_PCI_VF_TOKEN flag. Hence, add an API to utilize this functionality from the test code. The subsequent commit will use this to test the functionality of this method to set the vf_token. Signed-off-by: Raghavendra Rao Ananta Reviewed-by: David Matlack --- .../lib/include/libvfio/vfio_pci_device.h | 2 ++ .../selftests/vfio/lib/vfio_pci_device.c | 34 +++++++++++++++++++ 2 files changed, 36 insertions(+) diff --git a/tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h b/tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h index 898de032fed5a..4ebdc00e20fca 100644 --- a/tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h +++ b/tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h @@ -129,4 +129,6 @@ void vfio_container_set_iommu(struct vfio_pci_device *device); void vfio_pci_cdev_open(struct vfio_pci_device *device, const char *bdf); int __vfio_device_bind_iommufd(int device_fd, int iommufd, const char *vf_token); +void vfio_device_set_vf_token(int fd, const char *vf_token); + #endif /* SELFTESTS_VFIO_LIB_INCLUDE_LIBVFIO_VFIO_PCI_DEVICE_H */ diff --git a/tools/testing/selftests/vfio/lib/vfio_pci_device.c b/tools/testing/selftests/vfio/lib/vfio_pci_device.c index 3123ba591f088..4673b148f8c44 100644 --- a/tools/testing/selftests/vfio/lib/vfio_pci_device.c +++ b/tools/testing/selftests/vfio/lib/vfio_pci_device.c @@ -113,6 +113,40 @@ static void vfio_pci_irq_get(struct vfio_pci_device *device, u32 index, ioctl_assert(device->fd, VFIO_DEVICE_GET_IRQ_INFO, irq_info); } +static int vfio_device_feature_ioctl(int fd, u32 flags, void *data, + size_t data_size) +{ + u8 buffer[sizeof(struct vfio_device_feature) + data_size] = {}; + struct vfio_device_feature *feature = (void *)buffer; + + memcpy(feature->data, data, data_size); + + feature->argsz = sizeof(buffer); + feature->flags = flags; + + return ioctl(fd, VFIO_DEVICE_FEATURE, feature); +} + +static void vfio_device_feature_set(int fd, u16 feature, void *data, size_t data_size) +{ + u32 flags = VFIO_DEVICE_FEATURE_SET | feature; + int ret; + + ret = vfio_device_feature_ioctl(fd, flags, data, data_size); + VFIO_ASSERT_EQ(ret, 0, "Failed to set feature %u\n", feature); +} + +void vfio_device_set_vf_token(int fd, const char *vf_token) +{ + uuid_t token_uuid = {0}; + + VFIO_ASSERT_NOT_NULL(vf_token, "vf_token is NULL"); + VFIO_ASSERT_EQ(uuid_parse(vf_token, token_uuid), 0); + + vfio_device_feature_set(fd, VFIO_DEVICE_FEATURE_PCI_VF_TOKEN, + token_uuid, sizeof(uuid_t)); +} + static void vfio_pci_region_get(struct vfio_pci_device *device, int index, struct vfio_region_info *info) { -- 2.53.0.473.g4a7958ca14-goog