Re: [Qemu-devel] [patch qemu] net: move queue number into NICPeers

["Michael S. Tsirkin" <mst@redhat.com>]

On Mon, May 26, 2014 at 12:04:08PM +0200, Jiri Pirko wrote:
> It indicates the number of elements in ncs field and makes sense to have
> int inside NICPeers. Also in parse_netdev we do not need to access
> container and work with NICPeers only.
> 
> Signed-off-by: Jiri Pirko <jiri@resnulli.us>

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>

Please note that at least for virtio these are combined
rx/tx queues. We probably should make this clear somewhere.

> ---
>  hw/core/qdev-properties-system.c | 3 +--
>  hw/net/virtio-net.c              | 2 +-
>  include/net/net.h                | 2 +-
>  net/net.c                        | 4 ++--
>  4 files changed, 5 insertions(+), 6 deletions(-)
> 
> diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
> index 404cf18..3fd592c 100644
> --- a/hw/core/qdev-properties-system.c
> +++ b/hw/core/qdev-properties-system.c
> @@ -180,7 +180,6 @@ PropertyInfo qdev_prop_chr = {
>  static int parse_netdev(DeviceState *dev, const char *str, void **ptr)
>  {
>      NICPeers *peers_ptr = (NICPeers *)ptr;
> -    NICConf *conf = container_of(peers_ptr, NICConf, peers);
>      NetClientState **ncs = peers_ptr->ncs;
>      NetClientState *peers[MAX_QUEUE_NUM];
>      int queues, i = 0;
> @@ -219,7 +218,7 @@ static int parse_netdev(DeviceState *dev, const char *str, void **ptr)
>          ncs[i]->queue_index = i;
>      }
>  
> -    conf->queues = queues;
> +    peers_ptr->queues = queues;
>  
>      return 0;
>  
> diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
> index 940a7cf..b4cb277 100644
> --- a/hw/net/virtio-net.c
> +++ b/hw/net/virtio-net.c
> @@ -1533,7 +1533,7 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp)
>  
>      virtio_init(vdev, "virtio-net", VIRTIO_ID_NET, n->config_size);
>  
> -    n->max_queues = MAX(n->nic_conf.queues, 1);
> +    n->max_queues = MAX(n->nic_conf.peers.queues, 1);
>      n->vqs = g_malloc0(sizeof(VirtIONetQueue) * n->max_queues);
>      n->vqs[0].rx_vq = virtio_add_queue(vdev, 256, virtio_net_handle_rx);
>      n->curr_queues = 1;
> diff --git a/include/net/net.h b/include/net/net.h
> index 8166345..8a1db8a 100644
> --- a/include/net/net.h
> +++ b/include/net/net.h
> @@ -24,13 +24,13 @@ struct MACAddr {
>  
>  typedef struct NICPeers {
>      NetClientState *ncs[MAX_QUEUE_NUM];
> +    int32_t queues;
>  } NICPeers;
>  
>  typedef struct NICConf {
>      MACAddr macaddr;
>      NICPeers peers;
>      int32_t bootindex;
> -    int32_t queues;
>  } NICConf;
>  
>  #define DEFINE_NIC_PROPERTIES(_state, _conf)                            \
> diff --git a/net/net.c b/net/net.c
> index 0ff2e40..0246818 100644
> --- a/net/net.c
> +++ b/net/net.c
> @@ -233,7 +233,7 @@ NICState *qemu_new_nic(NetClientInfo *info,
>  {
>      NetClientState **peers = conf->peers.ncs;
>      NICState *nic;
> -    int i, queues = MAX(1, conf->queues);
> +    int i, queues = MAX(1, conf->peers.queues);
>  
>      assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC);
>      assert(info->size >= sizeof(NICState));
> @@ -346,7 +346,7 @@ void qemu_del_net_client(NetClientState *nc)
>  
>  void qemu_del_nic(NICState *nic)
>  {
> -    int i, queues = MAX(nic->conf->queues, 1);
> +    int i, queues = MAX(nic->conf->peers.queues, 1);
>  
>      /* If this is a peer NIC and peer has already been deleted, free it now. */
>      if (nic->peer_deleted) {
> -- 
> 1.9.0