[Spice-devel] [PATCH migration 01/19] server: set & test channel capabilities in red_channel

Alon Levy alevy at redhat.com
Mon Oct 31 23:44:58 PDT 2011


On Wed, Oct 12, 2011 at 12:38:51PM +0200, Yonit Halperin wrote:
> The code for setting and testing channel capabilities was
> unnecessarily duplicated. Now it is in red_channel.
> 

Can you add to the commit message that you drop RedsChannel? no need
to split.

ACK with that.

> Signed-off-by: Yonit Halperin <yhalperi at redhat.com>
> ---
>  server/inputs_channel.c    |    4 +-
>  server/main_channel.c      |   27 ++++----
>  server/main_channel.h      |   20 ++++--
>  server/red_channel.c       |   94 ++++++++++++++++++++++++---
>  server/red_channel.h       |   33 ++++++++--
>  server/red_tunnel_worker.c |    3 +-
>  server/red_worker.c        |    3 +-
>  server/reds.c              |  149 +++++++++++++++----------------------------
>  server/smartcard.c         |    4 +-
>  server/snd_worker.c        |   66 +++++++------------
>  server/spicevmc.c          |    4 +-
>  11 files changed, 226 insertions(+), 181 deletions(-)
> 
> diff --git a/server/inputs_channel.c b/server/inputs_channel.c
> index 24fc621..c8b42e3 100644
> --- a/server/inputs_channel.c
> +++ b/server/inputs_channel.c
> @@ -496,7 +496,9 @@ static void inputs_connect(RedChannel *channel, RedClient *client,
>      icc = (InputsChannelClient*)red_channel_client_create(sizeof(InputsChannelClient),
>                                                            channel,
>                                                            client,
> -                                                          stream);
> +                                                          stream,
> +                                                          num_common_caps, common_caps,
> +                                                          num_caps, caps);
>      icc->motion_count = 0;
>      inputs_pipe_add_init(&icc->base);
>  }
> diff --git a/server/main_channel.c b/server/main_channel.c
> index 43c0f3f..49028b3 100644
> --- a/server/main_channel.c
> +++ b/server/main_channel.c
> @@ -39,17 +39,13 @@
>  #include "server/demarshallers.h"
>  #include "common/ring.h"
>  #include "common/messages.h"
> -#include "reds.h"
>  #include "main_channel.h"
> +#include "reds.h"
>  #include "red_channel.h"
>  #include "generated_marshallers.h"
>  
>  #define ZERO_BUF_SIZE 4096
>  
> -// approximate max receive message size for main channel
> -#define RECEIVE_BUF_SIZE \
> -    (4096 + (REDS_AGENT_WINDOW_SIZE + REDS_NUM_INTERNAL_AGENT_MESSAGES) * SPICE_AGENT_MAX_DATA_SIZE)
> -
>  #define REDS_MAX_SEND_IOVEC 100
>  
>  #define NET_TEST_WARMUP_BYTES 0
> @@ -143,11 +139,6 @@ struct MainChannelClient {
>  #endif
>  };
>  
> -struct MainChannel {
> -    RedChannel base;
> -    uint8_t recv_buf[RECEIVE_BUF_SIZE];
> -};
> -
>  enum NetTestStage {
>      NET_TEST_STAGE_INVALID,
>      NET_TEST_STAGE_WARMUP,
> @@ -911,12 +902,18 @@ uint32_t main_channel_client_get_link_id(MainChannelClient *mcc)
>      return mcc->connection_id;
>  }
>  
> -MainChannelClient *main_channel_client_create(MainChannel *main_chan, RedClient *client,
> -                                              RedsStream *stream, uint32_t connection_id)
> +static MainChannelClient *main_channel_client_create(MainChannel *main_chan, RedClient *client,
> +                                                     RedsStream *stream, uint32_t connection_id,
> +                                                     int num_common_caps, uint32_t *common_caps,
> +                                                     int num_caps, uint32_t *caps)
>  {
>      MainChannelClient *mcc = (MainChannelClient*)red_channel_client_create(sizeof(MainChannelClient),
>                                                                             &main_chan->base,
> -                                                                           client, stream);
> +                                                                           client, stream,
> +                                                                           num_common_caps,
> +                                                                           common_caps,
> +                                                                           num_caps,
> +                                                                           caps);
>  
>      mcc->connection_id = connection_id;
>      mcc->bitrate_per_sec = ~0;
> @@ -942,7 +939,9 @@ MainChannelClient *main_channel_link(MainChannel *channel, RedClient *client,
>      // into usage somewhere (not an issue until we return migration to it's
>      // former glory)
>      red_printf("add main channel client");
> -    mcc = main_channel_client_create(channel, client, stream, connection_id);
> +    mcc = main_channel_client_create(channel, client, stream, connection_id,
> +                                     num_common_caps, common_caps,
> +                                     num_caps, caps);
>      return mcc;
>  }
>  
> diff --git a/server/main_channel.h b/server/main_channel.h
> index 713bcd0..2ae05e8 100644
> --- a/server/main_channel.h
> +++ b/server/main_channel.h
> @@ -45,7 +45,20 @@ struct MainMigrateData {
>      uint32_t write_queue_size;
>  };
>  
> -typedef struct MainChannel MainChannel;
> +// TODO: Defines used to calculate receive buffer size, and also by reds.c
> +// other options: is to make a reds_main_consts.h, to duplicate defines.
> +#define REDS_AGENT_WINDOW_SIZE 10
> +#define REDS_NUM_INTERNAL_AGENT_MESSAGES 1
> +
> +// approximate max receive message size for main channel
> +#define RECEIVE_BUF_SIZE \
> +    (4096 + (REDS_AGENT_WINDOW_SIZE + REDS_NUM_INTERNAL_AGENT_MESSAGES) * SPICE_AGENT_MAX_DATA_SIZE)
> +
> +typedef struct MainChannel {
> +    RedChannel base;
> +    uint8_t recv_buf[RECEIVE_BUF_SIZE];
> +} MainChannel;
> +
>  
>  MainChannel *main_channel_init(void);
>  RedClient *main_channel_get_client_by_link_id(MainChannel *main_chan, uint32_t link_id);
> @@ -82,9 +95,4 @@ int main_channel_client_is_low_bandwidth(MainChannelClient *mcc);
>  uint64_t main_channel_client_get_bitrate_per_sec(MainChannelClient *mcc);
>  int main_channel_is_connected(MainChannel *main_chan);
>  
> -// TODO: Defines used to calculate receive buffer size, and also by reds.c
> -// other options: is to make a reds_main_consts.h, to duplicate defines.
> -#define REDS_AGENT_WINDOW_SIZE 10
> -#define REDS_NUM_INTERNAL_AGENT_MESSAGES 1
> -
>  #endif
> diff --git a/server/red_channel.c b/server/red_channel.c
> index 8993cc3..51415cb 100644
> --- a/server/red_channel.c
> +++ b/server/red_channel.c
> @@ -358,11 +358,43 @@ static void red_channel_add_client(RedChannel *channel, RedChannelClient *rcc)
>      channel->clients_num++;
>  }
>  
> -RedChannelClient *red_channel_client_create(
> -    int size,
> -    RedChannel *channel,
> -    RedClient  *client,
> -    RedsStream *stream)
> +static void red_channel_client_set_remote_caps(RedChannelClient* rcc,
> +                                               int num_common_caps, uint32_t *common_caps,
> +                                               int num_caps, uint32_t *caps)
> +{
> +    rcc->remote_caps.num_common_caps = num_common_caps;
> +    rcc->remote_caps.common_caps = spice_memdup(common_caps, num_common_caps * sizeof(uint32_t));
> +
> +    rcc->remote_caps.num_caps = num_caps;
> +    rcc->remote_caps.caps = spice_memdup(caps, num_caps * sizeof(uint32_t));
> +}
> +
> +static void red_channel_client_destroy_remote_caps(RedChannelClient* rcc)
> +{
> +    rcc->remote_caps.num_common_caps = 0;
> +    free(rcc->remote_caps.common_caps);
> +    rcc->remote_caps.num_caps = 0;
> +    free(rcc->remote_caps.caps);
> +}
> +
> +int red_channel_client_test_remote_common_cap(RedChannelClient *rcc, uint32_t cap)
> +{
> +    return test_capabilty(rcc->remote_caps.common_caps,
> +                          rcc->remote_caps.num_common_caps,
> +                          cap);
> +}
> +
> +int red_channel_client_test_remote_cap(RedChannelClient *rcc, uint32_t cap)
> +{
> +    return test_capabilty(rcc->remote_caps.caps,
> +                          rcc->remote_caps.num_caps,
> +                          cap);
> +}
> +
> +RedChannelClient *red_channel_client_create(int size, RedChannel *channel, RedClient  *client,
> +                                            RedsStream *stream,
> +                                            int num_common_caps, uint32_t *common_caps,
> +                                            int num_caps, uint32_t *caps)
>  {
>      RedChannelClient *rcc;
>  
> @@ -384,6 +416,9 @@ RedChannelClient *red_channel_client_create(
>      rcc->outgoing.cb = &channel->outgoing_cb;
>      rcc->outgoing.pos = 0;
>      rcc->outgoing.size = 0;
> +
> +    red_channel_client_set_remote_caps(rcc, num_common_caps, common_caps, num_caps, caps);
> +
>      if (!channel->channel_cbs.config_socket(rcc)) {
>          goto error;
>      }
> @@ -564,10 +599,36 @@ void red_channel_register_client_cbs(RedChannel *channel, ClientCbs *client_cbs)
>      }
>  }
>  
> -void red_channel_set_caps(RedChannel *channel, int num_caps, uint32_t *caps)
> +int test_capabilty(uint32_t *caps, int num_caps, uint32_t cap)
>  {
> -    channel->num_caps = num_caps;
> -    channel->caps = caps;
> +    uint32_t index = cap / 32;
> +    if (num_caps < index + 1) {
> +        return FALSE;
> +    }
> +
> +    return (caps[index] & (1 << (cap % 32))) != 0;
> +}
> +
> +static void add_capability(uint32_t **caps, int *num_caps, uint32_t cap)
> +{
> +    int nbefore, n;
> +
> +    nbefore = *num_caps;
> +    n = cap / 32;
> +    *num_caps = MAX(*num_caps, n + 1);
> +    *caps = spice_renew(uint32_t, *caps, *num_caps);
> +    memset(*caps + nbefore, 0, (*num_caps - nbefore) * sizeof(uint32_t));
> +    (*caps)[n] |= (1 << (cap % 32));
> +}
> +
> +void red_channel_set_common_cap(RedChannel *channel, uint32_t cap)
> +{
> +    add_capability(&channel->local_caps.common_caps, &channel->local_caps.num_common_caps, cap);
> +}
> +
> +void red_channel_set_cap(RedChannel *channel, uint32_t cap)
> +{
> +    add_capability(&channel->local_caps.caps, &channel->local_caps.num_caps, cap);
>  }
>  
>  void red_channel_set_data(RedChannel *channel, void *data)
> @@ -585,6 +646,7 @@ void red_channel_client_destroy(RedChannelClient *rcc)
>      if (rcc->send_data.marshaller) {
>          spice_marshaller_destroy(rcc->send_data.marshaller);
>      }
> +    red_channel_client_destroy_remote_caps(rcc);
>      free(rcc);
>  }
>  
> @@ -600,9 +662,15 @@ void red_channel_destroy(RedChannel *channel)
>          red_channel_client_destroy(
>              SPICE_CONTAINEROF(link, RedChannelClient, channel_link));
>      }
> -    if (channel->caps) {
> -        free(channel->caps);
> +
> +    if (channel->local_caps.num_common_caps) {
> +        free(channel->local_caps.common_caps);
> +    }
> +
> +    if (channel->local_caps.num_caps) {
> +        free(channel->local_caps.caps);
>      }
> +
>      free(channel);
>  }
>  
> @@ -979,7 +1047,9 @@ void red_channel_disconnect(RedChannel *channel)
>  
>  RedChannelClient *red_channel_client_create_dummy(int size,
>                                                    RedChannel *channel,
> -                                                  RedClient  *client)
> +                                                  RedClient  *client,
> +                                                  int num_common_caps, uint32_t *common_caps,
> +                                                  int num_caps, uint32_t *caps)
>  {
>      RedChannelClient *rcc;
>  
> @@ -987,6 +1057,7 @@ RedChannelClient *red_channel_client_create_dummy(int size,
>      rcc = spice_malloc0(size);
>      rcc->client = client;
>      rcc->channel = channel;
> +    red_channel_client_set_remote_caps(rcc, num_common_caps, common_caps, num_caps, caps);
>      red_channel_add_client(channel, rcc);
>      return rcc;
>  }
> @@ -994,6 +1065,7 @@ RedChannelClient *red_channel_client_create_dummy(int size,
>  void red_channel_client_destroy_dummy(RedChannelClient *rcc)
>  {
>      red_channel_remove_client(rcc);
> +    red_channel_client_destroy_remote_caps(rcc);
>      free(rcc);
>  }
>  
> diff --git a/server/red_channel.h b/server/red_channel.h
> index 2ebb6b6..d044253 100644
> --- a/server/red_channel.h
> +++ b/server/red_channel.h
> @@ -143,7 +143,7 @@ typedef uint64_t (*channel_handle_migrate_data_get_serial_proc)(RedChannelClient
>  
>  
>  typedef void (*channel_client_connect_proc)(RedChannel *channel, RedClient *client, RedsStream *stream,
> -                                            int migration, int num_common_caps, uint32_t *common_caps,
> +                                            int migration, int num_common_cap, uint32_t *common_caps,
>                                              int num_caps, uint32_t *caps);
>  typedef void (*channel_client_disconnect_proc)(RedChannelClient *base);
>  typedef void (*channel_client_migrate_proc)(RedChannelClient *base);
> @@ -178,6 +178,15 @@ typedef struct {
>      channel_client_migrate_proc migrate;
>  } ClientCbs;
>  
> +typedef struct RedChannelCapabilities {
> +    int num_common_caps;
> +    uint32_t *common_caps;
> +    int num_caps;
> +    uint32_t *caps;
> +} RedChannelCapabilities;
> +
> +int test_capabilty(uint32_t *caps, int num_caps, uint32_t cap);
> +
>  struct RedChannelClient {
>      RingItem channel_link;
>      RingItem client_link;
> @@ -206,12 +215,16 @@ struct RedChannelClient {
>      int id; // debugging purposes
>      Ring pipe;
>      uint32_t pipe_size;
> +
> +    RedChannelCapabilities remote_caps;
>  };
>  
>  struct RedChannel {
>      uint32_t type;
>      uint32_t id;
>  
> +    RingItem link; // channels link for reds
> +
>      SpiceCoreInterface *core;
>      int migrate;
>      int handle_acks;
> @@ -232,8 +245,7 @@ struct RedChannel {
>      ChannelCbs channel_cbs;
>      ClientCbs client_cbs;
>  
> -    int num_caps;
> -    uint32_t *caps;
> +    RedChannelCapabilities local_caps;
>  
>      void *data;
>  
> @@ -265,19 +277,23 @@ RedChannel *red_channel_create_parser(int size,
>  
>  void red_channel_register_client_cbs(RedChannel *channel, ClientCbs *client_cbs);
>  // caps are freed when the channel is destroyed
> -void red_channel_set_caps(RedChannel *channel, int num_caps, uint32_t *caps);
> +void red_channel_set_common_cap(RedChannel *channel, uint32_t cap);
> +void red_channel_set_cap(RedChannel *channel, uint32_t cap);
>  void red_channel_set_data(RedChannel *channel, void *data);
>  
>  RedChannelClient *red_channel_client_create(int size, RedChannel *channel, RedClient *client,
> -                                            RedsStream *stream);
> -
> +                                            RedsStream *stream,
> +                                            int num_common_caps, uint32_t *common_caps,
> +                                            int num_caps, uint32_t *caps);
>  // TODO: tmp, for channels that don't use RedChannel yet (e.g., snd channel), but
>  // do use the client callbacks. So the channel clients are not connected (the channel doesn't
>  // have list of them, but they do have a link to the channel, and the client has a list of them)
>  RedChannel *red_channel_create_dummy(int size, uint32_t type, uint32_t id);
>  RedChannelClient *red_channel_client_create_dummy(int size,
>                                                    RedChannel *channel,
> -                                                  RedClient  *client);
> +                                                  RedClient  *client,
> +                                                  int num_common_caps, uint32_t *common_caps,
> +                                                  int num_caps, uint32_t *caps);
>  void red_channel_client_destroy_dummy(RedChannelClient *rcc);
>  
>  
> @@ -294,6 +310,9 @@ int red_channel_client_is_connected(RedChannelClient *rcc);
>  void red_channel_client_destroy(RedChannelClient *rcc);
>  void red_channel_destroy(RedChannel *channel);
>  
> +int red_channel_client_test_remote_common_cap(RedChannelClient *rcc, uint32_t cap);
> +int red_channel_client_test_remote_cap(RedChannelClient *rcc, uint32_t cap);
> +
>  /* shutdown is the only safe thing to do out of the client/channel
>   * thread. It will not touch the rings, just shutdown the socket.
>   * It should be followed by some way to gurantee a disconnection. */
> diff --git a/server/red_tunnel_worker.c b/server/red_tunnel_worker.c
> index 6c36fec..1e8267e 100644
> --- a/server/red_tunnel_worker.c
> +++ b/server/red_tunnel_worker.c
> @@ -3445,7 +3445,8 @@ static void handle_tunnel_channel_link(RedChannel *channel, RedClient *client,
>      }
>  
>      tcc = (TunnelChannelClient*)red_channel_client_create(sizeof(TunnelChannelClient),
> -                                                          channel, client, stream);
> +                                                          channel, client, stream,
> +                                                          0, NULL, 0, NULL);
>  
>      tcc->worker = worker;
>      tcc->worker->channel_client = tcc;
> diff --git a/server/red_worker.c b/server/red_worker.c
> index 7af715d..0f91259 100644
> --- a/server/red_worker.c
> +++ b/server/red_worker.c
> @@ -9452,7 +9452,8 @@ static CommonChannelClient *common_channel_client_create(int size,
>  {
>      MainChannelClient *mcc = red_client_get_main(client);
>      RedChannelClient *rcc =
> -        red_channel_client_create(size, &common->base, client, stream);
> +        red_channel_client_create(size, &common->base, client, stream,
> +                                  0, NULL, 0, NULL);
>      CommonChannelClient *common_cc = (CommonChannelClient*)rcc;
>      common_cc->worker = common->worker;
>  
> diff --git a/server/reds.c b/server/reds.c
> index 90779ff..ff609ce 100644
> --- a/server/reds.c
> +++ b/server/reds.c
> @@ -191,14 +191,6 @@ typedef struct RedsStatValue {
>  
>  typedef struct RedsMigSpice RedsMigSpice;
>  
> -typedef struct RedsChannel {
> -    struct RedsChannel *next;
> -    RedChannel *base;
> -
> -    int num_common_caps;
> -    uint32_t *common_caps;
> -} RedsChannel;
> -
>  typedef struct RedsState {
>      int listen_socket;
>      int secure_listen_socket;
> @@ -216,7 +208,7 @@ typedef struct RedsState {
>      int mig_target;
>      RedsMigSpice *mig_spice;
>      int num_of_channels;
> -    RedsChannel *channels;
> +    Ring channels;
>      int mouse_mode;
>      int is_client_mouse_allowed;
>      int dispatcher_allows_client_mouse;
> @@ -301,7 +293,6 @@ struct ChannelSecurityOptions {
>      ChannelSecurityOptions *next;
>  };
>  
> -static void reds_dispose_channel(RedsChannel *channel);
>  
>  static ChannelSecurityOptions *channels_security = NULL;
>  static int default_channel_security =
> @@ -514,42 +505,32 @@ void reds_update_stat_value(uint32_t value)
>  
>  void reds_register_channel(RedChannel *channel)
>  {
> -    RedsChannel *reds_channel;
> -
>      ASSERT(reds);
> -    // TODO: should channels be released upon some destructor?
> -    reds_channel = spice_malloc0(sizeof(RedsChannel));
> -    reds_channel->base = channel;
> -    reds_channel->next = reds->channels;
> -    reds->channels = reds_channel;
> +    ring_add(&reds->channels, &channel->link);
>      reds->num_of_channels++;
>  }
>  
>  void reds_unregister_channel(RedChannel *channel)
>  {
> -    RedsChannel **now = &reds->channels;
> -
> -    while (*now) {
> -        if ((*now)->base == channel) {
> -            RedsChannel *free_channel = *now;
> -            *now = free_channel->next;
> -            reds_dispose_channel(free_channel);
> -            free(free_channel);
> -            reds->num_of_channels--;
> -            return;
> -        }
> -        now = &(*now)->next;
> +    if (ring_item_is_linked(&channel->link)) {
> +        ring_remove(&channel->link);
> +        reds->num_of_channels--;
> +    } else {
> +        red_printf("not found");
>      }
> -    red_printf("not found");
>  }
>  
> -static RedsChannel *reds_find_channel(uint32_t type, uint32_t id)
> +static RedChannel *reds_find_channel(uint32_t type, uint32_t id)
>  {
> -    RedsChannel *channel = reds->channels;
> -    while (channel && !(channel->base->type == type && channel->base->id == id)) {
> -        channel = channel->next;
> +    RingItem *now;
> +
> +    RING_FOREACH(now, &reds->channels) {
> +        RedChannel *channel = SPICE_CONTAINEROF(now, RedChannel, link);
> +        if (channel->type == type && channel->id == id) {
> +            return channel;
> +        }
>      }
> -    return channel;
> +    return NULL;
>  }
>  
>  static void reds_mig_cleanup(void)
> @@ -986,11 +967,11 @@ SPICE_GNUC_VISIBLE int spice_server_get_num_clients(SpiceServer *s)
>  static int secondary_channels[] = {
>      SPICE_CHANNEL_MAIN, SPICE_CHANNEL_DISPLAY, SPICE_CHANNEL_CURSOR, SPICE_CHANNEL_INPUTS};
>  
> -static int channel_is_secondary(RedsChannel *channel)
> +static int channel_is_secondary(RedChannel *channel)
>  {
>      int i;
>      for (i = 0 ; i < sizeof(secondary_channels)/sizeof(secondary_channels[0]); ++i) {
> -        if (channel->base->type == secondary_channels[i]) {
> +        if (channel->type == secondary_channels[i]) {
>              return TRUE;
>          }
>      }
> @@ -999,21 +980,20 @@ static int channel_is_secondary(RedsChannel *channel)
>  
>  void reds_fill_channels(SpiceMsgChannels *channels_info)
>  {
> -    RedsChannel *channel;
> -    int i;
> +    RingItem *now;
>      int used_channels = 0;
>  
>      channels_info->num_of_channels = reds->num_of_channels;
> -    channel = reds->channels;
> -    for (i = 0; i < reds->num_of_channels; i++, channel = channel->next) {
> -        ASSERT(channel);
> +    RING_FOREACH(now, &reds->channels) {
> +        RedChannel *channel = SPICE_CONTAINEROF(now, RedChannel, link);
>          if (reds->num_clients > 1 && !channel_is_secondary(channel)) {
>              continue;
>          }
> -        channels_info->channels[used_channels].type = channel->base->type;
> -        channels_info->channels[used_channels].id = channel->base->id;
> +        channels_info->channels[used_channels].type = channel->type;
> +        channels_info->channels[used_channels].id = channel->id;
>          used_channels++;
>      }
> +
>      channels_info->num_of_channels = used_channels;
>      if (used_channels != reds->num_of_channels) {
>          red_printf("sent %d out of %d", used_channels, reds->num_of_channels);
> @@ -1387,46 +1367,22 @@ static int sync_write(RedsStream *stream, const void *in_buf, size_t n)
>      return TRUE;
>  }
>  
> -static void reds_channel_set_common_caps(RedsChannel *channel, int cap, int active)
> -{
> -    int nbefore, n;
> -
> -    nbefore = channel->num_common_caps;
> -    n = cap / 32;
> -    channel->num_common_caps = MAX(channel->num_common_caps, n + 1);
> -    channel->common_caps = spice_renew(uint32_t, channel->common_caps, channel->num_common_caps);
> -    memset(channel->common_caps + nbefore, 0,
> -           (channel->num_common_caps - nbefore) * sizeof(uint32_t));
> -    if (active) {
> -        channel->common_caps[n] |= (1 << cap);
> -    } else {
> -        channel->common_caps[n] &= ~(1 << cap);
> -    }
> -}
> -
> -static void reds_channel_init_auth_caps(RedsChannel *channel)
> +static void reds_channel_init_auth_caps(RedChannel *channel)
>  {
>      if (sasl_enabled) {
> -        reds_channel_set_common_caps(channel, SPICE_COMMON_CAP_AUTH_SASL, TRUE);
> +        red_channel_set_common_cap(channel, SPICE_COMMON_CAP_AUTH_SASL);
>      } else {
> -        reds_channel_set_common_caps(channel, SPICE_COMMON_CAP_AUTH_SPICE, TRUE);
> +        red_channel_set_common_cap(channel, SPICE_COMMON_CAP_AUTH_SPICE);
>      }
> -    reds_channel_set_common_caps(channel, SPICE_COMMON_CAP_PROTOCOL_AUTH_SELECTION, TRUE);
> -}
> -
> -static void reds_dispose_channel(RedsChannel *channel)
> -{
> -    free(channel->common_caps);
> -    channel->common_caps = NULL;
> -    channel->num_common_caps = 0;
> +    red_channel_set_common_cap(channel, SPICE_COMMON_CAP_PROTOCOL_AUTH_SELECTION);
>  }
>  
>  static int reds_send_link_ack(RedLinkInfo *link)
>  {
>      SpiceLinkHeader header;
>      SpiceLinkReply ack;
> -    RedsChannel common_caps = { 0, };
> -    RedsChannel *channel;
> +    RedChannel *channel;
> +    RedChannelCapabilities *channel_caps;
>      BUF_MEM *bmBuf;
>      BIO *bio;
>      int ret = FALSE;
> @@ -1440,13 +1396,16 @@ static int reds_send_link_ack(RedLinkInfo *link)
>  
>      channel = reds_find_channel(link->link_mess->channel_type, 0);
>      if (!channel) {
> -        channel = &common_caps;
> +        ASSERT(link->link_mess->channel_type == SPICE_CHANNEL_MAIN);
> +        ASSERT(reds->main_channel);
> +        channel = &reds->main_channel->base;
>      }
>  
>      reds_channel_init_auth_caps(channel); /* make sure common caps are set */
>  
> -    ack.num_common_caps = channel->num_common_caps;
> -    ack.num_channel_caps = channel->base ? channel->base->num_caps : 0;
> +    channel_caps = &channel->local_caps;
> +    ack.num_common_caps = channel_caps->num_common_caps;
> +    ack.num_channel_caps = channel_caps->num_caps;
>      header.size += (ack.num_common_caps + ack.num_channel_caps) * sizeof(uint32_t);
>      ack.caps_offset = sizeof(SpiceLinkReply);
>  
> @@ -1472,17 +1431,14 @@ static int reds_send_link_ack(RedLinkInfo *link)
>          goto end;
>      if (!sync_write(link->stream, &ack, sizeof(ack)))
>          goto end;
> -    if (!sync_write(link->stream, channel->common_caps, channel->num_common_caps * sizeof(uint32_t)))
> +    if (!sync_write(link->stream, channel_caps->common_caps, channel_caps->num_common_caps * sizeof(uint32_t)))
> +        goto end;
> +    if (!sync_write(link->stream, channel_caps->caps, channel_caps->num_caps * sizeof(uint32_t)))
>          goto end;
> -    if (channel->base) {
> -        if (!sync_write(link->stream, channel->base->caps, channel->base->num_caps * sizeof(uint32_t)))
> -            goto end;
> -    }
>  
>      ret = TRUE;
>  
>  end:
> -    reds_dispose_channel(&common_caps);
>      BIO_free(bio);
>      return ret;
>  }
> @@ -1541,6 +1497,8 @@ static void reds_handle_main_link(RedLinkInfo *link)
>      MainChannelClient *mcc;
>  
>      red_printf("");
> +    ASSERT(reds->main_channel);
> +
>      link_mess = link->link_mess;
>      if (!reds->allow_multiple_clients) {
>          reds_disconnect();
> @@ -1575,10 +1533,6 @@ static void reds_handle_main_link(RedLinkInfo *link)
>      link->link_mess = NULL;
>      reds_link_free(link);
>      caps = (uint32_t *)((uint8_t *)link_mess + link_mess->caps_offset);
> -    if (!reds->main_channel) {
> -        reds->main_channel = main_channel_init();
> -        ASSERT(reds->main_channel);
> -    }
>      client = red_client_new();
>      ring_add(&reds->clients, &client->link);
>      reds->num_clients++;
> @@ -1644,7 +1598,7 @@ static void openssl_init(RedLinkInfo *link)
>  
>  static void reds_handle_other_links(RedLinkInfo *link)
>  {
> -    RedsChannel *channel;
> +    RedChannel *channel;
>      RedClient *client = NULL;
>      RedsStream *stream;
>      SpiceLinkMess *link_mess;
> @@ -1686,12 +1640,12 @@ static void reds_handle_other_links(RedLinkInfo *link)
>      link->link_mess = NULL;
>      reds_link_free(link);
>      caps = (uint32_t *)((uint8_t *)link_mess + link_mess->caps_offset);
> -    channel->base->client_cbs.connect(channel->base, client, stream, reds->mig_target,
> -                                      link_mess->num_common_caps,
> -                                      link_mess->num_common_caps ? caps : NULL,
> -                                      link_mess->num_channel_caps,
> -                                      link_mess->num_channel_caps ?
> -                                          caps + link_mess->num_common_caps : NULL);
> +    channel->client_cbs.connect(channel, client, stream, reds->mig_target,
> +                                link_mess->num_common_caps,
> +                                link_mess->num_common_caps ? caps : NULL,
> +                                link_mess->num_channel_caps,
> +                                link_mess->num_channel_caps ?
> +                                caps + link_mess->num_common_caps : NULL);
>      free(link_mess);
>  }
>  
> @@ -2458,8 +2412,8 @@ static void reds_handle_read_link_done(void *opaque)
>          return;
>      }
>  
> -    auth_selection = link_mess->num_common_caps > 0 &&
> -        (caps[0] & (1 << SPICE_COMMON_CAP_PROTOCOL_AUTH_SELECTION));;
> +    auth_selection = test_capabilty(caps, link_mess->num_common_caps,
> +                                    SPICE_COMMON_CAP_PROTOCOL_AUTH_SELECTION);
>  
>      if (!reds_security_check(link)) {
>          if (link->stream->ssl) {
> @@ -3519,6 +3473,7 @@ static int do_spice_init(SpiceCoreInterface *core_interface)
>      init_vd_agent_resources();
>      ring_init(&reds->clients);
>      reds->num_clients = 0;
> +    ring_init(&reds->channels);
>  
>      if (!(reds->mig_timer = core->timer_add(migrate_timout, NULL))) {
>          red_error("migration timer create failed");
> @@ -3575,7 +3530,7 @@ static int do_spice_init(SpiceCoreInterface *core_interface)
>      }
>  #endif
>  
> -    reds->main_channel = NULL;
> +    reds->main_channel = main_channel_init();
>      inputs_init();
>  
>      reds->mouse_mode = SPICE_MOUSE_MODE_SERVER;
> diff --git a/server/smartcard.c b/server/smartcard.c
> index 056caa6..f9cafdf 100644
> --- a/server/smartcard.c
> +++ b/server/smartcard.c
> @@ -493,7 +493,9 @@ static void smartcard_connect(RedChannel *channel, RedClient *client,
>  {
>      RedChannelClient *rcc;
>  
> -    rcc = red_channel_client_create(sizeof(RedChannelClient), channel, client, stream);
> +    rcc = red_channel_client_create(sizeof(RedChannelClient), channel, client, stream,
> +                                    num_common_caps, common_caps,
> +                                    num_caps, caps);
>      red_channel_client_ack_zero_messages_window(rcc);
>  }
>  
> diff --git a/server/snd_worker.c b/server/snd_worker.c
> index 98f3cd1..048da34 100644
> --- a/server/snd_worker.c
> +++ b/server/snd_worker.c
> @@ -118,8 +118,6 @@ struct SndChannel {
>      snd_channel_handle_message_proc handle_message;
>      snd_channel_on_message_done_proc on_message_done;
>      snd_channel_cleanup_channel_proc cleanup;
> -    int num_caps;
> -    uint32_t *caps;
>  };
>  
>  typedef struct AudioFrame AudioFrame;
> @@ -196,18 +194,6 @@ static uint32_t playback_compression = SPICE_AUDIO_DATA_MODE_CELT_0_5_1;
>  
>  static void snd_receive(void* data);
>  
> -static int check_cap(uint32_t *caps, int num_caps, uint32_t cap)
> -{
> -    uint32_t i = cap / 32;
> -
> -    cap = 1 << (cap % 32);
> -    if (i >= num_caps) {
> -        return FALSE;
> -    }
> -
> -    return caps[i] & cap;
> -}
> -
>  static SndChannel *snd_channel_get(SndChannel *channel)
>  {
>      channel->refs++;
> @@ -239,7 +225,6 @@ static void snd_disconnect_channel(SndChannel *channel)
>      channel->stream->watch = NULL;
>      reds_stream_free(channel->stream);
>      spice_marshaller_destroy(channel->send_data.marshaller);
> -    free(channel->caps);
>      snd_channel_put(channel);
>  }
>  
> @@ -579,8 +564,10 @@ static int snd_playback_send_volume(PlaybackChannel *playback_channel)
>      SndChannel *channel = &playback_channel->base;
>      SpicePlaybackState *st = SPICE_CONTAINEROF(channel->worker, SpicePlaybackState, worker);
>  
> -    if (!check_cap(channel->caps, channel->num_caps, SPICE_PLAYBACK_CAP_VOLUME))
> +    if (!red_channel_client_test_remote_cap(channel->channel_client,
> +                                            SPICE_PLAYBACK_CAP_VOLUME)) {
>          return TRUE;
> +    }
>  
>      return snd_send_volume(channel, &st->volume, SPICE_MSG_PLAYBACK_VOLUME);
>  }
> @@ -603,8 +590,10 @@ static int snd_playback_send_mute(PlaybackChannel *playback_channel)
>      SndChannel *channel = &playback_channel->base;
>      SpicePlaybackState *st = SPICE_CONTAINEROF(channel->worker, SpicePlaybackState, worker);
>  
> -    if (!check_cap(channel->caps, channel->num_caps, SPICE_PLAYBACK_CAP_VOLUME))
> +    if (!red_channel_client_test_remote_cap(channel->channel_client,
> +                                            SPICE_PLAYBACK_CAP_VOLUME)) {
>          return TRUE;
> +    }
>  
>      return snd_send_mute(channel, &st->volume, SPICE_MSG_PLAYBACK_MUTE);
>  }
> @@ -695,8 +684,10 @@ static int snd_record_send_volume(RecordChannel *record_channel)
>      SndChannel *channel = &record_channel->base;
>      SpiceRecordState *st = SPICE_CONTAINEROF(channel->worker, SpiceRecordState, worker);
>  
> -    if (!check_cap(channel->caps, channel->num_caps, SPICE_RECORD_CAP_VOLUME))
> +    if (!red_channel_client_test_remote_cap(channel->channel_client,
> +                                            SPICE_RECORD_CAP_VOLUME)) {
>          return TRUE;
> +    }
>  
>      return snd_send_volume(channel, &st->volume, SPICE_MSG_RECORD_VOLUME);
>  }
> @@ -706,8 +697,10 @@ static int snd_record_send_mute(RecordChannel *record_channel)
>      SndChannel *channel = &record_channel->base;
>      SpiceRecordState *st = SPICE_CONTAINEROF(channel->worker, SpiceRecordState, worker);
>  
> -    if (!check_cap(channel->caps, channel->num_caps, SPICE_RECORD_CAP_VOLUME))
> +    if (!red_channel_client_test_remote_cap(channel->channel_client,
> +                                            SPICE_RECORD_CAP_VOLUME)) {
>          return TRUE;
> +    }
>  
>      return snd_send_mute(channel, &st->volume, SPICE_MSG_RECORD_MUTE);
>  }
> @@ -941,12 +934,12 @@ static SndChannel *__new_channel(SndWorker *worker, int size, uint32_t channel_i
>      channel->handle_message = handle_message;
>      channel->on_message_done = on_message_done;
>      channel->cleanup = cleanup;
> -    channel->num_caps = num_caps;
> -    channel->caps = spice_memdup(caps, num_caps * sizeof(uint32_t));
>  
>      channel->channel_client = red_channel_client_create_dummy(sizeof(RedChannelClient),
>                                                                worker->base_channel,
> -                                                              client);
> +                                                              client,
> +                                                              0, NULL,
> +                                                              num_caps, caps);
>      return channel;
>  
>  error2:
> @@ -1140,6 +1133,7 @@ static void snd_set_playback_peer(RedChannel *channel, RedClient *client, RedsSt
>      CELTEncoder *celt_encoder;
>      CELTMode *celt_mode;
>      int celt_error;
> +    RedChannelClient *rcc;
>  
>      snd_disconnect_channel(worker->connection);
>  
> @@ -1169,13 +1163,15 @@ static void snd_set_playback_peer(RedChannel *channel, RedClient *client, RedsSt
>          goto error_2;
>      }
>      worker->connection = &playback_channel->base;
> +    rcc = playback_channel->base.channel_client;
>      snd_playback_free_frame(playback_channel, &playback_channel->frames[0]);
>      snd_playback_free_frame(playback_channel, &playback_channel->frames[1]);
>      snd_playback_free_frame(playback_channel, &playback_channel->frames[2]);
>  
>      playback_channel->celt_mode = celt_mode;
>      playback_channel->celt_encoder = celt_encoder;
> -    playback_channel->mode = check_cap(caps, num_caps, SPICE_PLAYBACK_CAP_CELT_0_5_1) ?
> +    playback_channel->mode = red_channel_client_test_remote_cap(rcc,
> +                                                                SPICE_PLAYBACK_CAP_CELT_0_5_1) ?
>          playback_compression : SPICE_AUDIO_DATA_MODE_RAW;
>  
>      on_new_playback_channel(worker);
> @@ -1431,8 +1427,6 @@ static void remove_worker(SndWorker *worker)
>  void snd_attach_playback(SpicePlaybackInstance *sin)
>  {
>      SndWorker *playback_worker;
> -    int num_caps;
> -    uint32_t *caps;
>      RedChannel *channel;
>      ClientCbs client_cbs = {0,};
>  
> @@ -1449,12 +1443,8 @@ void snd_attach_playback(SpicePlaybackInstance *sin)
>      client_cbs.migrate = snd_playback_migrate_channel_client;
>      red_channel_register_client_cbs(channel, &client_cbs);
>      red_channel_set_data(channel, playback_worker);
> -
> -    num_caps = 1;
> -    caps = spice_new(uint32_t, 1);
> -    caps[0] = (1 << SPICE_PLAYBACK_CAP_CELT_0_5_1) |
> -              (1 << SPICE_PLAYBACK_CAP_VOLUME);
> -    red_channel_set_caps(channel, num_caps, caps);
> +    red_channel_set_cap(channel, SPICE_PLAYBACK_CAP_CELT_0_5_1);
> +    red_channel_set_cap(channel, SPICE_PLAYBACK_CAP_VOLUME);
>  
>      playback_worker->base_channel = channel;
>      add_worker(playback_worker);
> @@ -1464,8 +1454,6 @@ void snd_attach_playback(SpicePlaybackInstance *sin)
>  void snd_attach_record(SpiceRecordInstance *sin)
>  {
>      SndWorker *record_worker;
> -    int num_caps;
> -    uint32_t *caps;
>      RedChannel *channel;
>      ClientCbs client_cbs = {0,};
>  
> @@ -1482,12 +1470,8 @@ void snd_attach_record(SpiceRecordInstance *sin)
>      client_cbs.migrate = snd_record_migrate_channel_client;
>      red_channel_register_client_cbs(channel, &client_cbs);
>      red_channel_set_data(channel, record_worker);
> -
> -    num_caps = 1;
> -    caps = spice_new(uint32_t, 1);
> -    caps[0] = (1 << SPICE_RECORD_CAP_CELT_0_5_1) |
> -              (1 << SPICE_RECORD_CAP_VOLUME);
> -    red_channel_set_caps(channel, num_caps, caps);
> +    red_channel_set_cap(channel, SPICE_RECORD_CAP_CELT_0_5_1);
> +    red_channel_set_cap(channel, SPICE_RECORD_CAP_VOLUME);
>  
>      record_worker->base_channel = channel;
>      add_worker(record_worker);
> @@ -1538,8 +1522,8 @@ void snd_set_playback_compression(int on)
>          if (now->base_channel->type == SPICE_CHANNEL_PLAYBACK && now->connection) {
>              SndChannel* sndchannel = now->connection;
>              PlaybackChannel* playback = (PlaybackChannel*)now->connection;
> -            if (!check_cap(sndchannel->caps, sndchannel->num_caps,
> -                           SPICE_PLAYBACK_CAP_CELT_0_5_1)) {
> +            if (!red_channel_client_test_remote_cap(sndchannel->channel_client,
> +                                                    SPICE_PLAYBACK_CAP_CELT_0_5_1)) {
>                  ASSERT(playback->mode == SPICE_AUDIO_DATA_MODE_RAW);
>                  continue;
>              }
> diff --git a/server/spicevmc.c b/server/spicevmc.c
> index 9ccc0d1..8580984 100644
> --- a/server/spicevmc.c
> +++ b/server/spicevmc.c
> @@ -206,7 +206,9 @@ static void spicevmc_connect(RedChannel *channel, RedClient *client,
>          return;
>      }
>  
> -    rcc = red_channel_client_create(sizeof(RedChannelClient), channel, client, stream);
> +    rcc = red_channel_client_create(sizeof(RedChannelClient), channel, client, stream,
> +                                    num_common_caps, common_caps,
> +                                    num_caps, caps);
>      if (!rcc) {
>          return;
>      }
> -- 
> 1.7.6.4
> 


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