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Added a function to deallocate the struct dhcp from a netif (fixes bug #31525).

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goldsimon
2010-11-21 13:41:11 +00:00
parent f418782c2c
commit 32f02325f9
3 changed files with 24 additions and 0 deletions
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17
src/core/dhcp.c
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@@ -592,6 +592,23 @@ dhcp_set_struct(struct netif *netif, struct dhcp *dhcp)
netif->dhcp = dhcp;
}
/** Removes a struct dhcp from a netif.
*
* ATTENTION: Only use this when not using dhcp_set_struct() to allocate the
* struct dhcp since the memory is passed back to the heap.
*
* @param netif the netif from which to remove the struct dhcp
*/
void dhcp_cleanup(struct netif *netif)
{
LWIP_ASSERT("netif != NULL", netif != NULL);
if (netif->dhcp != NULL) {
mem_free(netif->dhcp);
netif->dhcp = NULL;
}
}
/**
* Start DHCP negotiation for a network interface.
*