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Re: [lwip-users] Problems with ASSERTION in tcp_in and tcp_out
From: |
Leon Woestenberg |
Subject: |
Re: [lwip-users] Problems with ASSERTION in tcp_in and tcp_out |
Date: |
Thu, 17 Jun 2004 18:50:25 +0200 |
User-agent: |
Mozilla Thunderbird 0.5 (Windows/20040207) |
Hello Justin,
Justin Bayles wrote:
I am not into the netconn_ layer, but shouldn't the sysarch semaphores
already synchronize access to the TCP layer? I.e. are you really seeing
concurrent access to both tcp_in and tcp_enqueue?
There is no synchronisation in either tcp_in or tcp_out. I am definitely
seeing concurrent access to tcp_in and tcp_out.
Yes, the lwIP core does no synchronization whatsoever (by design). The
higher layer should handle this.
lwIP core = {tcp, udp, icmp, arp, ip}
You said you where not using tcp_*() directly. What is your way of
sending and receive from TCP? netconn_*()? I.e. what is your higher
layer around the lwIP core?
Regards,
Leon.
- [lwip-users] Problems with ASSERTION in tcp_in and tcp_out, Justin Bayles, 2004/06/09
- Re: [lwip-users] Problems with ASSERTION in tcp_in and tcp_out, Justin Bayles, 2004/06/10
- Re: [lwip-users] Problems with ASSERTION in tcp_in and tcp_out, Justin Bayles, 2004/06/15
- Re: [lwip-users] Problems with ASSERTION in tcp_in and tcp_out, Justin Bayles, 2004/06/16
- Re: [lwip-users] Problems with ASSERTION in tcp_in and tcp_out, Justin Bayles, 2004/06/16
- Re: [lwip-users] Problems with ASSERTION in tcp_in and tcp_out,
Leon Woestenberg <=
- Re: [lwip-users] Problems with ASSERTION in tcp_in and tcp_out, Justin Bayles, 2004/06/17
- Re: [lwip-users] Problems with ASSERTION in tcp_in and tcp_out, Justin Bayles, 2004/06/17
- [lwip-users] Router issues with lwip, Martin Glunz, 2004/06/20
- Re: [lwip-users] Router issues with lwip, K.J. Mansley, 2004/06/21
- Re: [lwip-users] Router issues with lwip, Martin Glunz, 2004/06/22
- Re: [lwip-users] Router issues with lwip, K.J. Mansley, 2004/06/23
- Re: [lwip-users] Router issues with lwip, Leon Woestenberg, 2004/06/23
- Re: [lwip-users] Router issues with lwip, Martin Glunz, 2004/06/24
- Re: [lwip-users] Router issues with lwip, Leon Woestenberg, 2004/06/24