test_etharp.c File Reference

#include "test_etharp.h"
#include "lwip/udp.h"
#include "netif/etharp.h"
#include "lwip/stats.h"

Include dependency graph for test_etharp.c:

Go to the source code of this file.

Functions
static void	etharp_remove_all (void)
static err_t	default_netif_linkoutput (struct netif *netif, struct pbuf *p)
static err_t	default_netif_init (struct netif *netif)
static void	default_netif_add (void)
static void	default_netif_remove (void)
static void	create_arp_response (ip_addr_t *adr)
static void	etharp_setup (void)
static void	etharp_teardown (void)
	START_TEST (test_etharp_table)
END_TEST Suite *	etharp_suite (void)

Variables
static struct netif	test_netif
static ip_addr_t	test_ipaddr
static ip_addr_t	test_netmask
static ip_addr_t	test_gw
struct eth_addr	test_ethaddr = {1,1,1,1,1,1}
struct eth_addr	test_ethaddr2 = {1,1,1,1,1,2}
struct eth_addr	test_ethaddr3 = {1,1,1,1,1,3}
struct eth_addr	test_ethaddr4 = {1,1,1,1,1,4}
static int	linkoutput_ctr

Function Documentation

create_arp_response()

static void create_arp_response ( ip_addr_t *  adr )

static

Definition at line 75 of file test_etharp.c.

{
  int k;
  struct eth_hdr *ethhdr;
  struct etharp_hdr *etharphdr;
  struct pbuf *p = pbuf_alloc(PBUF_RAW, sizeof(struct eth_hdr) + sizeof(struct etharp_hdr), PBUF_RAM);
  if(p == NULL) {
    FAIL_RET();
  }
  ethhdr = (struct eth_hdr*)p->payload;
  etharphdr = (struct etharp_hdr*)(ethhdr + 1);
 
  ethhdr->dest = test_ethaddr;
  ethhdr->src = test_ethaddr2;
  ethhdr->type = htons(ETHTYPE_ARP);
 
  etharphdr->hwtype = htons(/*HWTYPE_ETHERNET*/ 1);
  etharphdr->proto = htons(ETHTYPE_IP);
  etharphdr->hwlen = ETHARP_HWADDR_LEN;
  etharphdr->protolen = sizeof(ip_addr_t);
  etharphdr->opcode = htons(ARP_REPLY);
 
  SMEMCPY(&etharphdr->sipaddr, adr, sizeof(ip_addr_t));
  SMEMCPY(&etharphdr->dipaddr, &test_ipaddr, sizeof(ip_addr_t));
 
  k = 6;
  while(k > 0) {
    k--;
    /* Write the ARP MAC-Addresses */
    etharphdr->shwaddr.addr[k] = test_ethaddr2.addr[k];
    etharphdr->dhwaddr.addr[k] = test_ethaddr.addr[k];
    /* Write the Ethernet MAC-Addresses */
    ethhdr->dest.addr[k] = test_ethaddr.addr[k];
    ethhdr->src.addr[k]  = test_ethaddr2.addr[k];
  }
 
  ethernet_input(p, &test_netif);
}

Referenced by START_TEST().

default_netif_add()

static void default_netif_add ( void  )

static

Definition at line 55 of file test_etharp.c.

{
  IP4_ADDR(&test_gw, 192,168,0,1);
  IP4_ADDR(&test_ipaddr, 192,168,0,1);
  IP4_ADDR(&test_netmask, 255,255,0,0);
 
  fail_unless(netif_default == NULL);
  netif_set_default(netif_add(&test_netif, &test_ipaddr, &test_netmask,
                              &test_gw, NULL, default_netif_init, NULL));
  netif_set_up(&test_netif);
}

Referenced by etharp_setup().

default_netif_init()

static err_t default_netif_init ( struct netif *  netif )

static

Definition at line 43 of file test_etharp.c.

{
  fail_unless(netif != NULL);
  netif->linkoutput = default_netif_linkoutput;
  netif->output = etharp_output;
  netif->mtu = 1500;
  netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
  netif->hwaddr_len = ETHARP_HWADDR_LEN;
  return ERR_OK;
}

Referenced by default_netif_add().

default_netif_linkoutput()

static err_t default_netif_linkoutput ( struct netif *  netif, struct pbuf *  p  )

static

Definition at line 34 of file test_etharp.c.

{
  fail_unless(netif == &test_netif);
  fail_unless(p != NULL);
  linkoutput_ctr++;
  return ERR_OK;
}

Referenced by default_netif_init().

default_netif_remove()

static void default_netif_remove ( void  )

static

Definition at line 68 of file test_etharp.c.

{
  fail_unless(netif_default == &test_netif);
  netif_remove(&test_netif);
}

Referenced by etharp_teardown().

etharp_remove_all()

static void etharp_remove_all ( void  )

static

Definition at line 24 of file test_etharp.c.

{
  int i;
  /* call etharp_tmr often enough to have all entries cleaned */
  for(i = 0; i < 0xff; i++) {
    etharp_tmr();
  }
}

Referenced by etharp_setup(), etharp_teardown(), and START_TEST().

etharp_setup()

static void etharp_setup ( void  )

static

Definition at line 117 of file test_etharp.c.

{
  etharp_remove_all();
  default_netif_add();
}

Referenced by etharp_suite().

etharp_suite()

END_TEST Suite * etharp_suite

(

void

)

Create the suite including all tests for this module

Definition at line 256 of file test_etharp.c.

{
  TFun tests[] = {
    test_etharp_table
  };
  return create_suite("ETHARP", tests, sizeof(tests)/sizeof(TFun), etharp_setup, etharp_teardown);
}

Referenced by main().

etharp_teardown()

static void etharp_teardown ( void  )

static

Definition at line 124 of file test_etharp.c.

{
  etharp_remove_all();
  default_netif_remove();
}

Referenced by etharp_suite().

START_TEST()

START_TEST

(

test_etharp_table

)

Definition at line 133 of file test_etharp.c.

{
#if ETHARP_SUPPORT_STATIC_ENTRIES
  err_t err;
#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */
  s8_t idx;
  ip_addr_t *unused_ipaddr;
  struct eth_addr *unused_ethaddr;
  struct udp_pcb* pcb;
  LWIP_UNUSED_ARG(_i);
 
  if (netif_default != &test_netif) {
    fail("This test needs a default netif");
  }
 
  linkoutput_ctr = 0;
 
  pcb = udp_new();
  fail_unless(pcb != NULL);
  if (pcb != NULL) {
    ip_addr_t adrs[ARP_TABLE_SIZE + 2];
    int i;
    for(i = 0; i < ARP_TABLE_SIZE + 2; i++) {
      IP4_ADDR(&adrs[i], 192,168,0,i+2);
    }
    /* fill ARP-table with dynamic entries */
    for(i = 0; i < ARP_TABLE_SIZE; i++) {
      struct pbuf *p = pbuf_alloc(PBUF_TRANSPORT, 10, PBUF_RAM);
      fail_unless(p != NULL);
      if (p != NULL) {
        err_t err = udp_sendto(pcb, p, &adrs[i], 123);
        fail_unless(err == ERR_OK);
        /* etharp request sent? */
        fail_unless(linkoutput_ctr == (2*i) + 1);
        pbuf_free(p);
 
        /* create an ARP response */
        create_arp_response(&adrs[i]);
        /* queued UDP packet sent? */
        fail_unless(linkoutput_ctr == (2*i) + 2);
 
        idx = etharp_find_addr(NULL, &adrs[i], &unused_ethaddr, &unused_ipaddr);
        fail_unless(idx == i);
        etharp_tmr();
      }
    }
    linkoutput_ctr = 0;
#if ETHARP_SUPPORT_STATIC_ENTRIES
    /* create one static entry */
    err = etharp_add_static_entry(&adrs[ARP_TABLE_SIZE], &test_ethaddr3);
    fail_unless(err == ERR_OK);
    idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE], &unused_ethaddr, &unused_ipaddr);
    fail_unless(idx == 0);
    fail_unless(linkoutput_ctr == 0);
#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */
 
    linkoutput_ctr = 0;
    /* fill ARP-table with dynamic entries */
    for(i = 0; i < ARP_TABLE_SIZE; i++) {
      struct pbuf *p = pbuf_alloc(PBUF_TRANSPORT, 10, PBUF_RAM);
      fail_unless(p != NULL);
      if (p != NULL) {
        err_t err = udp_sendto(pcb, p, &adrs[i], 123);
        fail_unless(err == ERR_OK);
        /* etharp request sent? */
        fail_unless(linkoutput_ctr == (2*i) + 1);
        pbuf_free(p);
 
        /* create an ARP response */
        create_arp_response(&adrs[i]);
        /* queued UDP packet sent? */
        fail_unless(linkoutput_ctr == (2*i) + 2);
 
        idx = etharp_find_addr(NULL, &adrs[i], &unused_ethaddr, &unused_ipaddr);
        if (i < ARP_TABLE_SIZE - 1) {
          fail_unless(idx == i+1);
        } else {
          /* the last entry must not overwrite the static entry! */
          fail_unless(idx == 1);
        }
        etharp_tmr();
      }
    }
#if ETHARP_SUPPORT_STATIC_ENTRIES
    /* create a second static entry */
    err = etharp_add_static_entry(&adrs[ARP_TABLE_SIZE+1], &test_ethaddr4);
    fail_unless(err == ERR_OK);
    idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE], &unused_ethaddr, &unused_ipaddr);
    fail_unless(idx == 0);
    idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE+1], &unused_ethaddr, &unused_ipaddr);
    fail_unless(idx == 2);
    /* and remove it again */
    err = etharp_remove_static_entry(&adrs[ARP_TABLE_SIZE+1]);
    fail_unless(err == ERR_OK);
    idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE], &unused_ethaddr, &unused_ipaddr);
    fail_unless(idx == 0);
    idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE+1], &unused_ethaddr, &unused_ipaddr);
    fail_unless(idx == -1);
#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */
 
    /* check that static entries don't time out */
    etharp_remove_all();
    idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE], &unused_ethaddr, &unused_ipaddr);
    fail_unless(idx == 0);
 
#if ETHARP_SUPPORT_STATIC_ENTRIES
    /* remove the first static entry */
    err = etharp_remove_static_entry(&adrs[ARP_TABLE_SIZE]);
    fail_unless(err == ERR_OK);
    idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE], &unused_ethaddr, &unused_ipaddr);
    fail_unless(idx == -1);
    idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE+1], &unused_ethaddr, &unused_ipaddr);
    fail_unless(idx == -1);
#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */
 
    udp_remove(pcb);
  }
}

Variable Documentation

linkoutput_ctr

int linkoutput_ctr

static

Definition at line 20 of file test_etharp.c.

Referenced by default_netif_linkoutput(), and START_TEST().

test_ethaddr

struct eth_addr test_ethaddr = {1,1,1,1,1,1}

Definition at line 16 of file test_etharp.c.

Referenced by create_arp_response().

test_ethaddr2

struct eth_addr test_ethaddr2 = {1,1,1,1,1,2}

Definition at line 17 of file test_etharp.c.

Referenced by create_arp_response().

test_ethaddr3

struct eth_addr test_ethaddr3 = {1,1,1,1,1,3}

Definition at line 18 of file test_etharp.c.

Referenced by START_TEST().

test_ethaddr4

struct eth_addr test_ethaddr4 = {1,1,1,1,1,4}

Definition at line 19 of file test_etharp.c.

Referenced by START_TEST().

test_gw

ip_addr_t test_gw

static

Definition at line 15 of file test_etharp.c.

Referenced by default_netif_add().

test_ipaddr

ip_addr_t test_ipaddr

static

Definition at line 15 of file test_etharp.c.

Referenced by create_arp_response(), and default_netif_add().

test_netif

struct netif test_netif

static

Definition at line 14 of file test_etharp.c.

Referenced by create_arp_response(), default_netif_add(), default_netif_linkoutput(), default_netif_remove(), and START_TEST().

test_netmask

ip_addr_t test_netmask

static

Definition at line 15 of file test_etharp.c.

Referenced by default_netif_add().