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[lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/p
From: |
Frédéric Bernon |
Subject: |
[lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state |
Date: |
Wed, 21 Mar 2007 09:25:11 +0000 |
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.8.1.2) Gecko/20070219 Firefox/2.0.0.2 |
Follow-up Comment #7, bug #19162 (project lwip):
lwip_sendto()? Uhmm, I don't like lwip_sendto() implementation, but remove
would be the only solution? :)
I don't like it because it's not efficient : 3 messages exchange between api
& tcpip_thread, for netconn_connect, lwip_send, &
netconn_connect/netconn_disconnect.
Each time : 1 alloc(tcpip_apimsg)/1 free(tcpip_thread), 2 post+fetch
(tcpip_apimsg post, tcpip_thread fetch, tcpip_thread post, tcpip_apimsh
fetch)...
alloc/free cause potential problems (same memp's pool is use by the driver &
by api_lib, if you receive lot of packets, you can fall in a "not enough
memory" problem, and, most of time, lwIP doesn't like that).
My solution: add a do_sendto in api_msg and do the process in tcpip_thread
context, in a atomic way. With this solution, two problems can be solved
(Bryan & Rob), and sendto will be faster.
I can propose a patch if you want (I just terminate a mail about another
bug). Good for you Kieran?
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- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Frédéric Bernon, 2007/03/03
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Bryan Schwichtenberg, 2007/03/20
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Frédéric Bernon, 2007/03/20
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Bryan Schwichtenberg, 2007/03/20
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Bryan Schwichtenberg, 2007/03/20
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Kieran Mansley, 2007/03/21
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state,
Frédéric Bernon <=
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Kieran Mansley, 2007/03/21
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Frédéric Bernon, 2007/03/21
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Kieran Mansley, 2007/03/21
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Kieran Mansley, 2007/03/21
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Bryan Schwichtenberg, 2007/03/21
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Frédéric Bernon, 2007/03/27
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Simon Goldschmidt, 2007/03/28
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Kieran Mansley, 2007/03/28
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Frédéric Bernon, 2007/03/28
- [lwip-devel] [bug #19162] lwip_sendto: possible to corrupt remote addr/port connection state, Kieran Mansley, 2007/03/28