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tap: Add check for USO features

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Tap indicates support for USO features according to
capabilities of current kernel module.

Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Signed-off-by: Andrew Melnychecnko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Yuri Benditovich
2023-08-01 01:31:46 +03:00
committed by Jason Wang
parent 2ab0ec3121
commit f03e0cf63b
8 changed files with 52 additions and 0 deletions
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12
net/tap.c
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@ -57,6 +57,7 @@ typedef struct TAPState {
bool write_poll;
bool using_vnet_hdr;
bool has_ufo;
bool has_uso;
bool enabled;
VHostNetState *vhost_net;
unsigned host_vnet_hdr_len;
@ -237,6 +238,15 @@ static bool tap_has_ufo(NetClientState *nc)
return s->has_ufo;
}
static bool tap_has_uso(NetClientState *nc)
{
TAPState *s = DO_UPCAST(TAPState, nc, nc);
assert(nc->info->type == NET_CLIENT_DRIVER_TAP);
return s->has_uso;
}
static bool tap_has_vnet_hdr(NetClientState *nc)
{
TAPState *s = DO_UPCAST(TAPState, nc, nc);
@ -384,6 +394,7 @@ static NetClientInfo net_tap_info = {
.poll = tap_poll,
.cleanup = tap_cleanup,
.has_ufo = tap_has_ufo,
.has_uso = tap_has_uso,
.has_vnet_hdr = tap_has_vnet_hdr,
.has_vnet_hdr_len = tap_has_vnet_hdr_len,
.get_using_vnet_hdr = tap_get_using_vnet_hdr,
@ -413,6 +424,7 @@ static TAPState *net_tap_fd_init(NetClientState *peer,
s->host_vnet_hdr_len = vnet_hdr ? sizeof(struct virtio_net_hdr) : 0;
s->using_vnet_hdr = false;
s->has_ufo = tap_probe_has_ufo(s->fd);
s->has_uso = tap_probe_has_uso(s->fd);
s->enabled = true;
tap_set_offload(&s->nc, 0, 0, 0, 0, 0, 0, 0);
/*