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Fixed bug #2826 (re-use of oldest ARP entry with queued packet leaks pbuf). Only if ARP_QUEUEING == 1.

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likewise 2003-03-16 23:46:29 +00:00
parent 76d395c8de
commit 45c13ad08f
1 changed files with 3 additions and 97 deletions
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100
src/netif/etharp.c
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@ -2,103 +2,6 @@
* @file
* Address Resolution Protocol module for IP over Ethernet
*
* $Log: etharp.c,v $
* Revision 1.30 2003/03/16 22:44:05 likewise
* Fixed bug #2841 (etharp.c packet queueing always picks table entry 6).
*
* Revision 1.29 2003/02/24 10:49:05 jani
* cleaned up opt.h a bit, added more option defaults ad changed SYS_LIGHTWEIGHT_PROT to be a 0/1 define.The same for COMPAT_SOCKET
*
* Revision 1.28 2003/02/21 16:43:46 jani
* byte-order handling functions are in inet.c now and the uperrcase counterparts are gone. opt.h has all the
* configurable items debug does not need to be directly included.
*
* Revision 1.27 2003/02/20 16:32:24 jani
* do not directly include lwipopts.h but lwip/opt.h instead
*
* Revision 1.26 2003/02/20 13:13:56 likewise
* Fixed some issues open after merging 'leon-dhcp'. Added new debugging.
*
* Revision 1.25 2003/02/20 08:42:04 likewise
* Merged with leon-dhcp branch. Tagged as POST_leon-dhcp afterwards.
*
* Revision 1.24.2.1 2003/02/10 22:42:59 likewise
* Massive amount of refactoring DHCP code.
*
* Revision 1.24 2003/02/06 22:18:57 davidhaas
* Add the following features and bugfixes:
*
* Added select() functionality to sockets library.
* Support for errno in sockets library.
* Byte ordering fixes.
* basic lwip_ioctl(), FIONREAD, get/setsockopt() etc. support
*
* - added additional argument to netif_add to pass state pointer so that the
* if_init function has access to context information before
* the interface is added, without accessing globals.
*
* - added netif_remove()
*
* - to conserve cpu load the tcpip_tcp_timer should only be active
* when tcbs that need it exist.
*
* - pass length of available data to callbacks for NETCONN_EVT_RCV events
*
* - added tcpip_link_input(), a hack to allow processing of PPP
* packets in tcpip_thread() context. This saves threads and context
* switches.
*
* - renamed incompatible ASSERT() macro to LWIP_ASSERT() to avoid name
* collision.
*
* - changed a bunch of %d's to %u's in format strings for unsigned values.
*
* - added ip_frag to lwip_stats.
*
* - changed IP_REASS_MAXAGE and IP_REASS_TMO defaults to more realistic
* values.
*
* - added sys_timeout_remove() function to cancel timeouts (needed by PPP
* amongst other things).
*
* - tolerate NULL returns from sys_arch_timeouts() since some threads might
* not need to use or have timeouts.
*
* - added sys_sem_wait_timeout()
*
* - moved mem_malloc() function to end of mem.c to work around tasking
* compiler bug.
*
* - automatically bind to local tcp port if 0.
*
* - allow customization of port ranges for automatic local bindings.
*
* - corrected various typos, spelling errors, etc..
*
* Thanks to Marc Boucher for many of these changes.
*
* Revision 1.23 2003/01/18 16:05:24 jani
* When all entries are 0 due to the whole table changing since the last arp tick (past 10 seconds) there's no oldest entry and the new entry does not get a spot.Fix this (from Ed Sutter)
*
* Revision 1.22 2003/01/13 09:38:21 jani
* remove global ctime.Each entry's ctime is now absolute.This avoids wrapping and also solves naming clash reported on the list
*
* Revision 1.21 2003/01/08 11:04:36 likewise
* Moved ETHARP_ALWAYS_INSERT switch to lwipopts.h
*
* Revision 1.19 2003/01/08 10:09:43 likewise
* Updated lwIP module copyright years to include 2003. Committers must check theirs.
*
* Revision 1.18 2003/01/08 09:24:50 likewise
* Removed etharp_output_sent() as etharp.c no longer returns ARP packets to the driver.
*
* Revision 1.17 2002/12/18 12:49:02 jani
* renamed (hopefully everywhere) stats to lwip_stats.closes bug #1901
*
* Revision 1.16 2002/12/17 09:41:16 jani
* Use C style comments.In debug stataments cast various struct pointers to void* to
* avoid printf warnings.misc warnings in etharp.
*
*/
/*
@ -298,6 +201,9 @@ find_arp_entry(void)
for(i = 0; i < ARP_TABLE_SIZE; ++i) {
/* remember entry with oldest stable entry in j*/
if((arp_table[i].state == ETHARP_STATE_STABLE) &&
#if ARP_QUEUEING /* do not want to re-use an entry with queued packets */
(arp_table[i].p != NULL) &&
#endif
(arp_table[i].ctime >= maxtime)) {
maxtime = arp_table[i].ctime;
j = i;