netif.c File Reference

#include "lwip/opt.h"
#include <string.h>
#include "lwip/def.h"
#include "lwip/ip_addr.h"
#include "lwip/ip6_addr.h"
#include "lwip/netif.h"
#include "lwip/priv/tcp_priv.h"
#include "lwip/udp.h"
#include "lwip/raw.h"
#include "lwip/snmp.h"
#include "lwip/igmp.h"
#include "lwip/etharp.h"
#include "lwip/stats.h"
#include "lwip/sys.h"
#include "lwip/ip.h"
#include "netif/ethernet.h"

Macros
#define	NETIF_STATUS_CALLBACK(n)
#define	NETIF_LINK_CALLBACK(n)
#define	NETIF_REPORT_TYPE_IPV4   0x01
#define	NETIF_REPORT_TYPE_IPV6   0x02

Functions
static void	netif_issue_reports (struct netif *netif, u8_t report_type)
void	netif_init (void)
err_t	netif_input (struct pbuf *p, struct netif *inp)
struct netif *	netif_add (struct netif *netif, void *state, netif_init_fn init, netif_input_fn input)
void	netif_remove (struct netif *netif)
struct netif *	netif_find (const char *name)
void	netif_set_default (struct netif *netif)
void	netif_set_up (struct netif *netif)
void	netif_set_down (struct netif *netif)
void	netif_set_link_up (struct netif *netif)
void	netif_set_link_down (struct netif *netif)

Variables
struct netif *	netif_list
struct netif *	netif_default
static u8_t	netif_num

Detailed Description

lwIP network interface abstraction

Macro Definition Documentation

NETIF_STATUS_CALLBACK

#define NETIF_STATUS_CALLBACK

(

n

)

NETIF_LINK_CALLBACK

#define NETIF_LINK_CALLBACK

(

n

)

NETIF_REPORT_TYPE_IPV4

#define NETIF_REPORT_TYPE_IPV4   0x01

NETIF_REPORT_TYPE_IPV6

#define NETIF_REPORT_TYPE_IPV6   0x02

Function Documentation

netif_issue_reports()

static void netif_issue_reports ( struct netif *  netif, u8_t  report_type  )

static

Send ARP/IGMP/MLD/RS events, e.g. on link-up/netif-up or addr-change

{
#if LWIP_IPV4
  if ((report_type & NETIF_REPORT_TYPE_IPV4) &&
      !ip4_addr_isany_val(*netif_ip4_addr(netif))) {
#if LWIP_ARP
    /* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
    if (netif->flags & (NETIF_FLAG_ETHARP)) {
      etharp_gratuitous(netif);
    }
#endif /* LWIP_ARP */
 
#if LWIP_IGMP
    /* resend IGMP memberships */
    if (netif->flags & NETIF_FLAG_IGMP) {
      igmp_report_groups(netif);
    }
#endif /* LWIP_IGMP */
  }
#endif /* LWIP_IPV4 */
 
#if LWIP_IPV6
  if (report_type & NETIF_REPORT_TYPE_IPV6) {
#if LWIP_IPV6_MLD
    /* send mld memberships */
    mld6_report_groups(netif);
#endif /* LWIP_IPV6_MLD */
#if LWIP_IPV6_SEND_ROUTER_SOLICIT
    /* Send Router Solicitation messages. */
    netif->rs_count = LWIP_ND6_MAX_MULTICAST_SOLICIT;
#endif /* LWIP_IPV6_SEND_ROUTER_SOLICIT */
  }
#endif /* LWIP_IPV6 */
}

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netif_init()

void netif_init

(

void

)

{
#if LWIP_HAVE_LOOPIF
#if LWIP_IPV4
#define LOOPIF_ADDRINIT &loop_ipaddr, &loop_netmask, &loop_gw,
  ip4_addr_t loop_ipaddr, loop_netmask, loop_gw;
  IP4_ADDR(&loop_gw, 127,0,0,1);
  IP4_ADDR(&loop_ipaddr, 127,0,0,1);
  IP4_ADDR(&loop_netmask, 255,0,0,0);
#else /* LWIP_IPV4 */
#define LOOPIF_ADDRINIT
#endif /* LWIP_IPV4 */
 
#if NO_SYS
  netif_add(&loop_netif, LOOPIF_ADDRINIT NULL, netif_loopif_init, ip_input);
#else  /* NO_SYS */
  netif_add(&loop_netif, LOOPIF_ADDRINIT NULL, netif_loopif_init, tcpip_input);
#endif /* NO_SYS */
 
#if LWIP_IPV6
  IP_ADDR6_HOST(loop_netif.ip6_addr, 0, 0, 0, 0x00000001UL);
  loop_netif.ip6_addr_state[0] = IP6_ADDR_VALID;
#endif /* LWIP_IPV6 */
 
  netif_set_link_up(&loop_netif);
  netif_set_up(&loop_netif);
 
#endif /* LWIP_HAVE_LOOPIF */
}

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netif_input()

err_t netif_input	(	struct pbuf *	p,
		struct netif *	inp
	)

Forwards a received packet for input processing with ethernet_input() or ip_input() depending on netif flags. Don't call directly, pass to netif_add() and call netif->input(). Only works if the netif driver correctly sets NETIF_FLAG_ETHARP and/or NETIF_FLAG_ETHERNET flag!

{
#if LWIP_ETHERNET
  if (inp->flags & (NETIF_FLAG_ETHARP | NETIF_FLAG_ETHERNET)) {
    return ethernet_input(p, inp);
  } else
#endif /* LWIP_ETHERNET */
  return ip_input(p, inp);
}

Variable Documentation

netif_list

struct netif* netif_list

The list of network interfaces.

netif_default

struct netif* netif_default

The default network interface.

netif_num

u8_t netif_num

static