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task #10139 (Prefer statically allocated memory): added autoip_set_struct() and dhcp_set_struct() to let autoip and dhcp work with user-allocated structs instead of callin mem_malloc

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This commit is contained in:
goldsimon
2010-02-12 16:42:02 +00:00
parent 8768e4488a
commit 2e795d2706
5 changed files with 48 additions and 5 deletions
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19
src/core/ipv4/autoip.c
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@@ -131,6 +131,25 @@ autoip_init(void)
LWIP_DEBUGF(AUTOIP_DEBUG | LWIP_DBG_TRACE, ("autoip_init()\n"));
}
/** Set a statically allocated struct autoip to work with.
* Using this prevents autoip_start to allocate it using mem_malloc.
*
* @param netif the netif for which to set the struct autoip
* @param dhcp (uninitialised) dhcp struct allocated by the application
*/
void
autoip_set_struct(struct netif *netif, struct autoip *autoip)
{
LWIP_ASSERT("netif != NULL", netif != NULL);
LWIP_ASSERT("autoip != NULL", autoip != NULL);
LWIP_ASSERT("netif already has a struct autoip set", netif->autoip == NULL);
/* clear data structure */
memset(autoip, 0, sizeof(struct autoip));
/* autoip->state = AUTOIP_STATE_OFF; */
netif->autoip = autoip;
}
/**
* Handle a IP address conflict after an ARP conflict detection
*/