/************************************************************************
* NAME: fnet_igmp_leave
*
* DESCRIPTION: Sends a Leave Group message.
*************************************************************************/
void fnet_igmp_leave( fnet_netif_t *netif, fnet_ip4_addr_t group_addr )
{
#if FNET_CFG_IGMP_VERSION == 2
fnet_netbuf_t *nb_header;
fnet_igmp_header_t *igmp_header;
fnet_ip4_addr_t dest_ip = FNET_IP4_ADDR_INIT(224, 0, 0, 2); /* All-routers multicast group.*/
/* Construct IGMP header*/
if((nb_header = fnet_netbuf_new(sizeof(fnet_igmp_header_t), FNET_FALSE)) != 0)
{
/*
* When a host leaves a multicast group, if it was the last host to
* reply to a Query with a Membership Report for that group, it SHOULD
* send a Leave Group message to the all-routers multicast group (224.0.0.2).
*/
igmp_header = nb_header->data_ptr;
igmp_header->type = IGMP_HEADER_TYPE_LEAVE_GROUP; /* Type.*/
igmp_header->max_resp_time = 0; /* Unused field, zeroed when sent, ignored when received.*/
igmp_header->group_addr = group_addr ; /* Group address field.*/
igmp_header->checksum = 0;
igmp_header->checksum = fnet_checksum(nb_header, (int)nb_header->total_length);
/* RFC 1112: A Report is sent with an IP destination address equal to the
* host group address being reported, and with an IP time-to-live of 1.
*/
fnet_ip_output(netif, INADDR_ANY, dest_ip /*dest_addr*/, FNET_IP_PROTOCOL_IGMP, FNET_IGMP_TOS, FNET_IGMP_TTL, nb_header, 0, 0, 0);
}
#endif /* FNET_CFG_IGMP_VERSION */
}
/************************************************************************
* NAME: fnet_netif_init
*
* DESCRIPTION: This function installs & inits a network interface.
*************************************************************************/
int fnet_netif_init( fnet_netif_t *netif, unsigned char *hw_addr, unsigned int hw_addr_size )
{
int result = FNET_OK;
if(netif && netif->api)
{
fnet_os_mutex_lock();
fnet_isr_lock();
netif->next = fnet_netif_list;
if(netif->next != 0)
netif->next->prev = netif;
netif->prev = 0;
fnet_netif_list = netif;
fnet_netif_assign_scope_id( netif ); /* Asign Scope ID.*/
netif->features = FNET_NETIF_FEATURE_NONE;
/* Interface HW initialization.*/
if(netif->api->init && ((result = netif->api->init(netif)) == FNET_OK))
{
#if FNET_CFG_IGMP && FNET_CFG_IP4
/**************************************************************
* RFC1112 7.2
* To support IGMP, every level 2 host must
* join the "all-hosts" group (address 224.0.0.1) on each network
* interface at initialization time and must remain a member for as long
* as the host is active.
*
* NOTE:(224.0.0.1) membership is never reported by IGMP.
**************************************************************/
/* Join HW interface. */
fnet_netif_join_ip4_multicast ( netif, FNET_IP4_ADDR_INIT(224, 0, 0, 1) );
#endif /* FNET_CFG_IGMP */
/* Set HW Address.*/
fnet_netif_set_hw_addr(netif, hw_addr, hw_addr_size);
/* Interface-Type specific initialisation. */
switch(netif->api->type)
{
#if (FNET_CFG_CPU_ETH0 ||FNET_CFG_CPU_ETH1)
case (FNET_NETIF_TYPE_ETHERNET):
result = fnet_eth_init(netif);
break;
#endif /* FNET_CFG_ETH */
default:
break;
}
}
fnet_printf("ETH - Initialization: %s, ID:%d\n", netif->name, netif->scope_id);
fnet_printf(" - IP: %x, GW: %x\n", netif->ip4_addr.address, netif->ip4_addr.gateway);
fnet_printf(" - MASK: %x, DHCP?: %d\n", netif->ip4_addr.netmask, netif->ip4_addr.is_automatic);
fnet_printf(" - MTU: %d\n", netif->mtu);
fnet_printf(" - MTU: %x\n", netif->if_ptr);
fnet_isr_unlock();
fnet_os_mutex_unlock();
}
return result;
}
