| Message ID | 1395762030-6946-1-git-send-email-akong@redhat.com |
|---|---|
| State | New |
| Headers | show |
On 03/25/2014 09:40 AM, Amos Kong wrote: > Stefan Fritsch just fixed a virtio-net driver bug [1], virtio-net won't > filter out VLAN-tagged packets if VIRTIO_NET_F_CTRL_VLAN isn't negotiated. > > This patch added a new field to @RxFilterInfo to indicate vlan receive > state ('normal', 'none', 'all'). If VIRTIO_NET_F_CTRL_VLAN isn't > negotiated, vlan receive state will be 'all', then all VLAN-tagged packets > will be received by guest. > > [1] http://lists.nongnu.org/archive/html/qemu-devel/2014-02/msg02604.html > > Signed-off-by: Amos Kong <akong@redhat.com> > --- > V2: don't make vlan-table optional, add a flag to indicate > if vlan table is used by management > V3: change the new filed to RxState > --- > hw/net/virtio-net.c | 42 +++++++++++++++++++++++++++++------------- > qapi-schema.json | 3 +++ > qmp-commands.hx | 2 ++ > 3 files changed, 34 insertions(+), 13 deletions(-) Reviewed-by: Eric Blake <eblake@redhat.com> > + > + list = NULL; > + for (i = 0; i < MAX_VLAN >> 5; i++) { > + for (j = 0; n->vlans[i] && j < 0x1f; j++) { Pre-existing, but isn't this an off-by-one? That is, don't you also want the iteration for j==0x1f? Or are there really only 31 instead of 32 vlan maps? > - int_list = NULL; > - for (i = 0; i < MAX_VLAN >> 5; i++) { > - for (j = 0; n->vlans[i] && j < 0x1f; j++) { > - if (n->vlans[i] & (1U << j)) { > - int_entry = g_malloc0(sizeof(*int_entry)); > - int_entry->value = (i << 5) + j;
On Tue, Mar 25, 2014 at 10:24:33AM -0600, Eric Blake wrote: > On 03/25/2014 09:40 AM, Amos Kong wrote: > > Stefan Fritsch just fixed a virtio-net driver bug [1], virtio-net won't > > filter out VLAN-tagged packets if VIRTIO_NET_F_CTRL_VLAN isn't negotiated. > > > > This patch added a new field to @RxFilterInfo to indicate vlan receive > > state ('normal', 'none', 'all'). If VIRTIO_NET_F_CTRL_VLAN isn't > > negotiated, vlan receive state will be 'all', then all VLAN-tagged packets > > will be received by guest. > > > > [1] http://lists.nongnu.org/archive/html/qemu-devel/2014-02/msg02604.html > > > > Signed-off-by: Amos Kong <akong@redhat.com> > > --- > > V2: don't make vlan-table optional, add a flag to indicate > > if vlan table is used by management > > V3: change the new filed to RxState > > --- > > hw/net/virtio-net.c | 42 +++++++++++++++++++++++++++++------------- > > qapi-schema.json | 3 +++ > > qmp-commands.hx | 2 ++ > > 3 files changed, 34 insertions(+), 13 deletions(-) > > Reviewed-by: Eric Blake <eblake@redhat.com> > > > > + > > + list = NULL; > > + for (i = 0; i < MAX_VLAN >> 5; i++) { > > + for (j = 0; n->vlans[i] && j < 0x1f; j++) { > > Pre-existing, but isn't this an off-by-one? That is, don't you also > want the iteration for j==0x1f? Or are there really only 31 instead of > 32 vlan maps? Good catch! it should be 'j <= 0x1f' > > - int_list = NULL; > > - for (i = 0; i < MAX_VLAN >> 5; i++) { > > - for (j = 0; n->vlans[i] && j < 0x1f; j++) { > > - if (n->vlans[i] & (1U << j)) { > > - int_entry = g_malloc0(sizeof(*int_entry)); > > - int_entry->value = (i << 5) + j; > > > -- > Eric Blake eblake redhat com +1-919-301-3266 > Libvirt virtualization library http://libvirt.org >
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index fd23c46..ecfffbc 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -222,13 +222,33 @@ static char *mac_strdup_printf(const uint8_t *mac) mac[1], mac[2], mac[3], mac[4], mac[5]); } +static intList *get_vlan_table(VirtIONet *n) +{ + intList *list, *entry; + int i, j; + + list = NULL; + for (i = 0; i < MAX_VLAN >> 5; i++) { + for (j = 0; n->vlans[i] && j < 0x1f; j++) { + if (n->vlans[i] & (1U << j)) { + entry = g_malloc0(sizeof(*entry)); + entry->value = (i << 5) + j; + entry->next = list; + list = entry; + } + } + } + + return list; +} + static RxFilterInfo *virtio_net_query_rxfilter(NetClientState *nc) { VirtIONet *n = qemu_get_nic_opaque(nc); + VirtIODevice *vdev = VIRTIO_DEVICE(n); RxFilterInfo *info; strList *str_list, *entry; - intList *int_list, *int_entry; - int i, j; + int i; info = g_malloc0(sizeof(*info)); info->name = g_strdup(nc->name); @@ -273,19 +293,15 @@ static RxFilterInfo *virtio_net_query_rxfilter(NetClientState *nc) str_list = entry; } info->multicast_table = str_list; + info->vlan_table = get_vlan_table(n); - int_list = NULL; - for (i = 0; i < MAX_VLAN >> 5; i++) { - for (j = 0; n->vlans[i] && j < 0x1f; j++) { - if (n->vlans[i] & (1U << j)) { - int_entry = g_malloc0(sizeof(*int_entry)); - int_entry->value = (i << 5) + j; - int_entry->next = int_list; - int_list = int_entry; - } - } + if (!((1 << VIRTIO_NET_F_CTRL_VLAN) & vdev->guest_features)) { + info->vlan = RX_STATE_ALL; + } else if (!info->vlan_table) { + info->vlan = RX_STATE_NONE; + } else { + info->vlan = RX_STATE_NORMAL; } - info->vlan_table = int_list; /* enable event notification after query */ nc->rxfilter_notify_enabled = 1; diff --git a/qapi-schema.json b/qapi-schema.json index b68cd44..391356f 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -4184,6 +4184,8 @@ # # @unicast: unicast receive state # +# @vlan: vlan receive state (Since 2.0) +# # @broadcast-allowed: whether to receive broadcast # # @multicast-overflow: multicast table is overflowed or not @@ -4207,6 +4209,7 @@ 'promiscuous': 'bool', 'multicast': 'RxState', 'unicast': 'RxState', + 'vlan': 'RxState', 'broadcast-allowed': 'bool', 'multicast-overflow': 'bool', 'unicast-overflow': 'bool', diff --git a/qmp-commands.hx b/qmp-commands.hx index a22621f..ed3ab92 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -3407,6 +3407,7 @@ Each array entry contains the following: - "promiscuous": promiscuous mode is enabled (json-bool) - "multicast": multicast receive state (one of 'normal', 'none', 'all') - "unicast": unicast receive state (one of 'normal', 'none', 'all') +- "vlan": vlan receive state (one of 'normal', 'none', 'all') (Since 2.0) - "broadcast-allowed": allow to receive broadcast (json-bool) - "multicast-overflow": multicast table is overflowed (json-bool) - "unicast-overflow": unicast table is overflowed (json-bool) @@ -3424,6 +3425,7 @@ Example: "name": "vnet0", "main-mac": "52:54:00:12:34:56", "unicast": "normal", + "vlan": "normal", "vlan-table": [ 4, 0
Stefan Fritsch just fixed a virtio-net driver bug [1], virtio-net won't filter out VLAN-tagged packets if VIRTIO_NET_F_CTRL_VLAN isn't negotiated. This patch added a new field to @RxFilterInfo to indicate vlan receive state ('normal', 'none', 'all'). If VIRTIO_NET_F_CTRL_VLAN isn't negotiated, vlan receive state will be 'all', then all VLAN-tagged packets will be received by guest. [1] http://lists.nongnu.org/archive/html/qemu-devel/2014-02/msg02604.html Signed-off-by: Amos Kong <akong@redhat.com> --- V2: don't make vlan-table optional, add a flag to indicate if vlan table is used by management V3: change the new filed to RxState --- hw/net/virtio-net.c | 42 +++++++++++++++++++++++++++++------------- qapi-schema.json | 3 +++ qmp-commands.hx | 2 ++ 3 files changed, 34 insertions(+), 13 deletions(-)