abc/lwip
1
0
Fork 0
mirror of https://git.savannah.nongnu.org/git/lwip.git synced 2025-08-04 21:44:38 +08:00
Code Issues Packages Projects Releases Wiki Activity

autoip: Choose next address after rate limit

Browse Source 
AutoIP now selects a new address after rate limit timeout,
AutoIP tries a new address by incrementing the tried_llipaddr counter
in the ACD_DECLINE case of the callback.

In lwIP pre-2.2.0, address conflict detection was handled within autoip.c, and
the incrementing happened in autoip_restart() (line 150). When ACD was
extracted into a separate module in 2.2.0, this increment was missing for the
rate-limiting path.

Without this change, devices continuously retry the same IP address after rate
limiting, causing them to fail Bonjour Conformance Tests.
This commit is contained in:
David Cermak 2024-11-28 12:51:10 +01:00 committed by Erik Ekman
parent b1edb7780f
commit e7ab7e0773
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/core/ipv4/autoip.c
View File

@ -223,9 +223,10 @@ autoip_conflict_callback(struct netif *netif, acd_callback_enum_t state)
autoip_restart(netif);
break;
case ACD_DECLINE:
/* "delete" conflicting address so a new one will be selected in
* autoip_start() */
/* "delete" conflicting address and increment tried addr so a new one
* will be selected in autoip_start() */
ip4_addr_set_any(&autoip->llipaddr);
autoip->tried_llipaddr++;
autoip_stop(netif);
break;
default: