netif.c File Reference

#include "lwip/opt.h"
#include <string.h>
#include <stdlib.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/priv/raw_priv.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"

Include dependency graph for netif.c:

Go to the source code of this file.

Macros
#define	NETIF_STATUS_CALLBACK(n)
#define	NETIF_LINK_CALLBACK(n)
#define	netif_index_to_num(index)   ((index) - 1)
#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_noaddr (struct netif *netif, void *state, netif_init_fn init, netif_input_fn input)
struct netif *	netif_add (struct netif *netif, void *state, netif_init_fn init, netif_input_fn input)
static void	netif_do_ip_addr_changed (const ip_addr_t *old_addr, const ip_addr_t *new_addr)
void	netif_remove (struct netif *netif)
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)
u8_t	netif_name_to_index (const char *name)
char *	netif_index_to_name (u8_t idx, char *name)
struct netif *	netif_get_by_index (u8_t idx)
struct netif *	netif_find (const char *name)

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

Detailed Description

lwIP network interface abstraction

Definition in file netif.c.

Macro Definition Documentation

netif_index_to_num

#define netif_index_to_num

(

index

)

((index) - 1)

Definition at line 117 of file netif.c.

NETIF_LINK_CALLBACK

#define NETIF_LINK_CALLBACK

(

n

)

Definition at line 105 of file netif.c.

NETIF_REPORT_TYPE_IPV4

#define NETIF_REPORT_TYPE_IPV4   0x01

Definition at line 124 of file netif.c.

NETIF_REPORT_TYPE_IPV6

#define NETIF_REPORT_TYPE_IPV6   0x02

Definition at line 125 of file netif.c.

NETIF_STATUS_CALLBACK

#define NETIF_STATUS_CALLBACK

(

n

)

Definition at line 99 of file netif.c.

Function Documentation

netif_do_ip_addr_changed()

static void netif_do_ip_addr_changed ( const ip_addr_t *  old_addr, const ip_addr_t *  new_addr  )

static

Definition at line 459 of file netif.c.

{
#if LWIP_TCP
  tcp_netif_ip_addr_changed(old_addr, new_addr);
#endif /* LWIP_TCP */
#if LWIP_UDP
  udp_netif_ip_addr_changed(old_addr, new_addr);
#endif /* LWIP_UDP */
#if LWIP_RAW
  raw_netif_ip_addr_changed(old_addr, new_addr);
#endif /* LWIP_RAW */
}

Referenced by netif_remove().

netif_init()

void netif_init

(

void

)

Definition at line 188 of file netif.c.

{
#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 */
}

Referenced by lwip_init(), and main().

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

Definition at line 902 of file netif.c.

{
  LWIP_ASSERT("netif_issue_reports: invalid netif", netif != NULL);
 
  /* Only send reports when both link and admin states are up */
  if (!(netif->flags & NETIF_FLAG_LINK_UP) ||
      !(netif->flags & NETIF_FLAG_UP)) {
    return;
  }
 
#if LWIP_IPV4
  if ((report_type & NETIF_REPORT_TYPE_IPV4) &&
      !ip4_addr_isany_val(*netif_ip4_addr(netif))) {
#if LWIP_ARP && !LWIP_ACD
    /* For Ethernet network interfaces:
     * we would like to send a "gratuitous ARP".
     * Only needs to be done here if ACD isn't configured.
     */
    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 */
  }
#endif /* LWIP_IPV6 */
}

Referenced by netif_set_link_up(), and netif_set_up().

Variable Documentation

netif_default

struct netif* netif_default

The default network interface.

Definition at line 115 of file netif.c.

Referenced by default_netif_add(), default_netif_remove(), mqtt_setup(), mqtt_teardown(), netif_add(), netif_remove(), netif_set_default(), START_TEST(), tcp_oos_setup(), tcp_oos_teardown(), tcp_setup(), tcp_state_setup(), tcp_state_teardown(), tcp_teardown(), test_netif_add(), and test_netif_remove().

netif_list

struct netif* netif_list

The list of network interfaces.

Definition at line 113 of file netif.c.

Referenced by create_ip4_input_fragment(), default_netif_add(), default_netif_remove(), ip4_teardown(), mqtt_setup(), mqtt_teardown(), netif_add(), netif_remove(), tcp_oos_setup(), tcp_oos_teardown(), tcp_setup(), tcp_state_setup(), tcp_state_teardown(), tcp_teardown(), test_mqtt_init_netif(), and test_tcp_init_netif().

netif_num

u8_t netif_num

static

Definition at line 118 of file netif.c.

Referenced by netif_add().