linux-kernel - [PATCH] vdpa_sim_net: Offer VIRTIO_NET_F

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Message-Id: <20221117155502.1394700-1-eperezma@redhat.com>
Date:   Thu, 17 Nov 2022 16:55:02 +0100
From:   Eugenio Pérez <eperezma@...hat.com>
To:     linux-kernel@...r.kernel.org, mst@...hat.com,
        virtualization@...ts.linux-foundation.org,
        Jason Wang <jasowang@...hat.com>,
        Stefano Garzarella <sgarzare@...hat.com>
Subject: [PATCH] vdpa_sim_net: Offer VIRTIO_NET_F_STATUS

VIRTIO_NET_S_LINK_UP is already returned in config reads since vdpasim
creation, but the feature bit was not offered to the driver.

Tested modifying VIRTIO_NET_S_LINK_UP and different values of "status"
in qemu virtio-net options, using vhost_vdpa.

Not considering as a fix, because there should be no driver trusting in
this config read before the feature flag.

Signed-off-by: Eugenio Pérez <eperezma@...hat.com>
---
 drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
index c3cb225ea469..30cfcfcf97f7 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c
@@ -27,6 +27,7 @@
 
 #define VDPASIM_NET_FEATURES	(VDPASIM_FEATURES | \
 				 (1ULL << VIRTIO_NET_F_MAC) | \
+				 (1ULL << VIRTIO_NET_F_STATUS) | \
 				 (1ULL << VIRTIO_NET_F_MTU) | \
 				 (1ULL << VIRTIO_NET_F_CTRL_VQ) | \
 				 (1ULL << VIRTIO_NET_F_CTRL_MAC_ADDR))
-- 
2.31.1