[lwip-devel] How to use lwip timers in other modules

[Giuseppe Modugno]

I'd like to use lwip timers in other modules of my application. However 
I have a difficulty, because I need one timer at a very first stage of 
startup, where I can't call lwip_init() yet.

In my case, I think it would be better to split lwip_init() in two 
functions: lwip_core_init() and lwip_init().
lwip_core_init() could be:

  stats_init();
#if !NO_SYS
  sys_init();
#endif /* !NO_SYS */
  mem_init();
  memp_init();
#if LWIP_TIMERS
  sys_timeouts_init();
#endif /* LWIP_TIMERS */

Other initializations should be left in lwip_init():

#ifndef LWIP_SKIP_CONST_CHECK
  int a = 0;
  LWIP_UNUSED_ARG(a);
  LWIP_ASSERT("LWIP_CONST_CAST not implemented correctly. Check your 
lwIP port.", LWIP_CONST_CAST(void *, &a) == &a);
#endif
#ifndef LWIP_SKIP_PACKING_CHECK
  LWIP_ASSERT("Struct packing not implemented correctly. Check your 
lwIP port.", sizeof(struct packed_struct_test) == 
PACKED_STRUCT_TEST_EXPECTED_SIZE);
#endif

  /* Modules initialization */
  pbuf_init();
  netif_init();
#if LWIP_IPV4
  ip_init();
#if LWIP_ARP
  etharp_init();
#endif /* LWIP_ARP */
#endif /* LWIP_IPV4 */
#if LWIP_RAW
  raw_init();
#endif /* LWIP_RAW */
#if LWIP_UDP
  udp_init();
#endif /* LWIP_UDP */
#if LWIP_TCP
  tcp_init();
#endif /* LWIP_TCP */
#if LWIP_IGMP
  igmp_init();
#endif /* LWIP_IGMP */
#if LWIP_DNS
  dns_init();
#endif /* LWIP_DNS */
#if PPP_SUPPORT
  ppp_init();
#endif

What do you think?