Re: [lwip-users] recv function BLOCK because recv_mbox is full: can yougive me a solution?

[Bikram Chatterjee]

That's right Jeff,

This story is an year old.

On Sun, Mar 9, 2008 at 5:49 AM, Jonathan Larmour <address@hidden> wrote:
> Bikram Chatterjee wrote:
>  >
>  > Consider in your case, if your driver produces 9 packets (8 is the max
>  > size of all mailboxes) in time, in which application can consume only
>  > one packet. The following scenario occurs:
>  > 1. After consuming one buffer-full application goes for the second time.
>  > 2. By that time driver have already posted 8 messages in mbox and
>  > blocking for 9th packet.
>  > 3. Application can not post anymore callbacks in mbox as it is already
>  > full and waiting on mbox.
>  > 4. tcpip_thread has already posted 8 messages into recvmbox and has
>  > 9th message in hand from driver to post in recvmbox and blocked.
>
>  Was this with an older version of lwIP? Current lwIP (i.e. 1.3.0rc1 and
>  CVS) uses sys_mbox_trypost to post to the recvmbox so the tcpip thread
>  should never block doing this.
>
>
>  Jifl
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