From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f74.google.com (mail-oo1-f74.google.com [209.85.161.74]) (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 06BCC4968EF for ; Tue, 5 May 2026 21:28:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778016529; cv=none; b=t3Eyo4zGyYOStcMM3g7B3FxJVv095v1wObpUgmu1PaZa5NCywqIBg821k9HUHgR30axxq62Q/keZFvEuTDKK3Et+COyV2Le0uWq/yeMAf+51UAeiZyc0hdPMqIUOriu0Q7HeUVgv2g/o036KCi1z5/eP6x1cck5CIQP72b2hzoA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778016529; c=relaxed/simple; bh=KQmibtmI+xu5liPsMJf+5p5Lt3l2eDymMQXEWvyYjxM=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=d4QItK4ryZM2ckJH7v/Fv6SxO+JNMjfxB3jLAijURRZB1tuA5Wr3YgWPAg/LEUl1hzQ0H6wzojJ2TvtdkP1I3IbRKnrzpFOJF1/zRnGoQ0hC53mhXATW6aYJ8TuudnYCkN35RG6vgWdS/eXQBlf1QutqyS+NDC7lMyXJGNpb0rg= 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=XwWajQfQ; arc=none smtp.client-ip=209.85.161.74 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="XwWajQfQ" Received: by mail-oo1-f74.google.com with SMTP id 006d021491bc7-69491bd267fso12208399eaf.0 for ; Tue, 05 May 2026 14:28:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1778016526; x=1778621326; 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=3tvcZVP6cn5IGaKeTjBEK0jxizc/mIRujnOHig1BUO4=; b=XwWajQfQvWPc7ugFy8/Ys7irEQ5+/H/vKls4Kmy1UDfXlhJHQCP2T45HkgO9LsetFn +CZ4wmozPUHt5vjTx9SrBm/4aNGq4EPqPE38EdV8WGGiPQT4JBgLde8fAxQVKQsgkyso PhsNFQ3GtK8fT97Vw460nI5YmK5C7t97iuqB5y3MbSa7gKN3k0WOerN92WBvPk49YQWy d/LYPPwugJrVu82j5QayS8r0k6PdUKZPZRsG8gKbhaAqMbcgKuYIwa6SQqMZ8E/u0Ppc +FX7u9J11Nyec9rLX7/TXP4fNzr12gXrzfsr/68X7jLRlnBXCpa3Secd8TTngAXJWM9D 7y6A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778016526; x=1778621326; 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=3tvcZVP6cn5IGaKeTjBEK0jxizc/mIRujnOHig1BUO4=; b=jaaFSISpPuJpiiwM14leESziIuVRCGqRleXC0cncbwvCd12EubS1z/f+wQQcPzB++7 zcVdK2kgX/UpXekEoxQpwHJ7H1uhikizyw733p4mXXdVkG0TagNfpZLXhDJ2XGQuRSUg 4MAnVcA/TeGaNcmNX78K17MK+dmpVtG4HCL/bJH89SZIuXgPVAfyeq2L9VuJuQ0fMQUX cD/HpTNwUgGp/BK6iKB3+aoBawLK8hSmhg/g88gDG5FBBMY0gVqO45k35RLjKm4yefUE +YA3UmpoTOu71fwn9CIojh9se5EyjMUOCJKxHRXFIs1SwBmjUNtSQdaxxn6HERsqUMDr Drnw== X-Forwarded-Encrypted: i=1; AFNElJ8ELhYE9zTVLq2U1oFNWNsRX3xwQsJOiF3oJahTNY821UyisWUOORhBeyBV+mFl2KeMRZpienE0oBihKdE=@vger.kernel.org X-Gm-Message-State: AOJu0Yzp8m5h6UCY8JG169z+CgNebRVm/sZ1voPf8zo4kdx+LDMJ+JuX gprv9l+h4+lki7TL1YYskZKDLTLYbCQ4FMNxEtz9AGQwPzZwfdwikGjLDm7nWU3OsTIwwdQbPyY FyxXhGacMeQ== X-Received: from ilaf8.prod.google.com ([2002:a05:6e02:1688:b0:4fc:57e4:69b3]) (user=rananta job=prod-delivery.src-stubby-dispatcher) by 2002:a4a:e914:0:b0:696:1291:fb29 with SMTP id 006d021491bc7-69998cbe145mr363532eaf.24.1778016525870; Tue, 05 May 2026 14:28:45 -0700 (PDT) Date: Tue, 5 May 2026 21:28:36 +0000 In-Reply-To: <20260505212838.1698034-1-rananta@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260505212838.1698034-1-rananta@google.com> X-Mailer: git-send-email 2.54.0.545.g6539524ca2-goog Message-ID: <20260505212838.1698034-7-rananta@google.com> Subject: [PATCH v8 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 53e01cdb2b4e5..6b855fbcb4a22 100644 --- a/tools/testing/selftests/vfio/lib/vfio_pci_device.c +++ b/tools/testing/selftests/vfio/lib/vfio_pci_device.c @@ -115,6 +115,40 @@ 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) { -- 2.54.0.545.g6539524ca2-goog