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Fixed numerous bugs. Re-used etharp_query() in etharp_output(). Added comments and JavaDoc documentation.

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likewise 2002-11-08 22:14:24 +00:00
parent 8077dd838c
commit 2b53babf99
1 changed files with 22 additions and 9 deletions
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31
src/netif/etharp.c
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@ -3,6 +3,9 @@
* Address Resolution Protocol module for IP over Ethernet
*
* $Log: etharp.c,v $
* Revision 1.5 2002/11/08 22:14:24 likewise
* Fixed numerous bugs. Re-used etharp_query() in etharp_output(). Added comments and JavaDoc documentation.
*
* Revision 1.4 2002/11/08 12:54:43 proff_fs
* Added includeds for bpstruct and epstruct.
* Ports should update from using PACK_STRUCT_BEGIN and PACK_STRUCT_END to use these includes.
@ -55,22 +58,28 @@
#include "lwip/ip.h"
#include "lwip/stats.h"
#if LWIP_DHCP
/* ARP needs to inform DHCP of any ARP replies? */
#if (LWIP_DHCP && DHPC_DOES_ARP_CHECK)
# include "lwip/dhcp.h"
#endif
/** the time an ARP entry stays valid after its last update */
#define ARP_MAXAGE 120 /* 120 * 10 seconds = 20 minutes. */
/** the maximum time waiting for ARP reply to a ARP request */
#define ARP_MAXPENDING 2 /* 2 * 10 seconds = 20 seconds. */
#define HWTYPE_ETHERNET 1
/** ARP message types */
#define ARP_REQUEST 1
#define ARP_REPLY 2
/* MUST be compiled with "pack structs" or equivalent! */
#include "arch/bpstruct.h"
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/bpstruct.h"
#endif
PACK_STRUCT_BEGIN
/** the ARP message */
struct etharp_hdr {
PACK_STRUCT_FIELD(struct eth_hdr ethhdr);
PACK_STRUCT_FIELD(u16_t hwtype);
@ -83,23 +92,29 @@ struct etharp_hdr {
PACK_STRUCT_FIELD(struct ip_addr dipaddr);
} PACK_STRUCT_STRUCT;
PACK_STRUCT_END
#include "arch/epstruct.h"
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/epstruct.h"
#endif
#define ARPH_HWLEN(hdr) (NTOHS((hdr)->_hwlen_protolen) >> 8)
#define ARPH_PROTOLEN(hdr) (NTOHS((hdr)->_hwlen_protolen) & 0xff)
#define ARPH_HWLEN_SET(hdr, len) (hdr)->_hwlen_protolen = HTONS(ARPH_PROTOLEN(hdr) | ((len) << 8))
#define ARPH_PROTOLEN_SET(hdr, len) (hdr)->_hwlen_protolen = HTONS((len) | (ARPH_HWLEN(hdr) << 8))
#include "arch/bpstruct.h"
/* MUST be compiled with "pack structs" or equivalent! */
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/bpstruct.h"
#endif
PACK_STRUCT_BEGIN
struct ethip_hdr {
PACK_STRUCT_FIELD(struct eth_hdr eth);
PACK_STRUCT_FIELD(struct ip_hdr ip);
};
PACK_STRUCT_END
#include "arch/epstruct.h"
#ifdef PACK_STRUCT_USE_INCLUDES
# include "arch/epstruct.h"
#endif
enum etharp_state {
ETHARP_STATE_EMPTY,
@ -112,8 +127,6 @@ struct etharp_entry {
struct eth_addr ethaddr;
enum etharp_state state;
struct pbuf *p;
void *payload;
u16_t len, tot_len;
u8_t ctime;
};