RE: [PATCH 1/3] colo-compare: return -1 if no packet is queued

["Zhang, Chen" <chen.zhang@intel.com>]

> -----Original Message-----
> From: Li Zhijian <lizhijian@cn.fujitsu.com>
> Sent: Tuesday, September 22, 2020 5:55 PM
> To: Zhang, Chen <chen.zhang@intel.com>; jasowang@redhat.com
> Cc: qemu-devel@nongnu.org; Li Zhijian <lizhijian@cn.fujitsu.com>
> Subject: [PATCH 1/3] colo-compare: return -1 if no packet is queued
> 
> Return 0 will trigger a packet comparison
> 

Yes, we need active trigger a checkpoint to flush all the queued packets here.
Otherwise, we should drop all the packet after this time still next checkpoint.
So, I think original logic is a better choice.

Thanks
Zhang Chen

> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
> ---
>  net/colo-compare.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/net/colo-compare.c b/net/colo-compare.c index
> 3a45d64175..039b515611 100644
> --- a/net/colo-compare.c
> +++ b/net/colo-compare.c
> @@ -289,6 +289,7 @@ static int packet_enqueue(CompareState *s, int
> mode, Connection **con)
>              "queue size too big, drop packet");
>          packet_destroy(pkt, NULL);
>          pkt = NULL;
> +        return -1;
>      }
> 
>      *con = conn;
> --
> 2.28.0
> 
>