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DHCP Allows selecting the DHCP server's network interface (#426)

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Fernando 2017-10-10 14:01:32 -03:00 • committed by Ruslan V. Uss
parent 260dd1bde8
commit cb4ea206fa
4 changed files with 64 additions and 67 deletions
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18
extras/dhcpserver/dhcpserver.c
View file

@ -3,11 +3,7 @@
* Based on RFC2131 http://www.ietf.org/rfc/rfc2131.txt
* ... although not fully RFC compliant yet.
*
* TODO
* * Allow binding on a single interface only (for mixed AP/client mode), lwip seems to make it hard to
* listen for or send broadcasts on a specific interface only.
*
* * Probably allocates more memory than it should, it should be possible to reuse netbufs in most cases.
* Probably allocates more memory than it should, it should be possible to reuse netbufs in most cases.
*
* Part of esp-open-rtos
* Copyright (C) 2015 Superhouse Automation Pty Ltd
@ -92,8 +88,12 @@ inline static void sprintf_ipaddr(const ip4_addr_t *addr, char *dest)
ip4_addr2(addr), ip4_addr3(addr), ip4_addr4(addr));
}
void dhcpserver_start(const ip4_addr_t *first_client_addr, uint8_t max_leases)
void dhcpserver_start(struct netif *server_if, const ip_addr_t *first_client_addr, uint8_t max_leases)
{
if(!server_if){
printf("DHCP Server Error: server_if is NULL.\r\n");
return;
}
/* Stop any existing running dhcpserver */
if (dhcpserver_task_handle)
dhcpserver_stop();
@ -109,7 +109,7 @@ void dhcpserver_start(const ip4_addr_t *first_client_addr, uint8_t max_leases)
ip4_addr_set_zero(&state->router);
ip4_addr_set_zero(&state->dns);
xTaskCreate(dhcpserver_task, "DHCP Server", 448, NULL, 2, &dhcpserver_task_handle);
xTaskCreate(dhcpserver_task, "DHCPServer", 768, server_if, 8, &dhcpserver_task_handle);
}
void dhcpserver_stop(void)
@ -134,7 +134,7 @@ void dhcpserver_set_dns(const ip4_addr_t *dns)
static void dhcpserver_task(void *pxParameter)
{
/* netif_list isn't assigned until after user_init completes, which is why we do it inside the task */
state->server_if = netif_list; /* TODO: Make this configurable */
state->server_if = pxParameter;
state->nc = netconn_new (NETCONN_UDP);
if(!state->nc) {
@ -143,7 +143,7 @@ static void dhcpserver_task(void *pxParameter)
}
netconn_bind(state->nc, IP4_ADDR_ANY, LWIP_IANA_PORT_DHCP_SERVER);
netconn_bind_if (state->nc, netif_get_index(state->server_if));
netconn_bind_if(state->nc, netif_get_index(state->server_if));
while(1)
{

4
extras/dhcpserver/include/dhcpserver.h
View file

@ -25,8 +25,10 @@ extern "C" {
first_client_addr is the IP address of the first lease to be handed
to a client. Subsequent lease addresses are calculated by
incrementing the final octet of the IPv4 address, up to max_leases.
The server will wait for requests on server_if interface.
*/
void dhcpserver_start(const ip4_addr_t *first_client_addr, uint8_t max_leases);
void dhcpserver_start(struct netif *server_if, const ip_addr_t *first_client_addr, uint8_t max_leases);
void dhcpserver_get_lease(const ip4_addr_t *first_client_addr, uint8_t max_leases);