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Done some work on task #1549 (function documentation) and minor changes to meet coding standard + added some comments to make the code easier to read.

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goldsimon
2007-06-08 17:10:05 +00:00
parent 9768657fc7
commit b7e4d2a8ff
4 changed files with 173 additions and 55 deletions
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30
src/netif/etharp.c
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@@ -114,6 +114,7 @@ static u8_t etharp_cached_entry = 0;
static s8_t find_entry(struct ip_addr *ipaddr, u8_t flags);
static err_t update_arp_entry(struct netif *netif, struct ip_addr *ipaddr, struct eth_addr *ethaddr, u8_t flags);
/**
* Initializes ARP module.
*/
@@ -133,8 +134,13 @@ etharp_init(void)
}
#if ARP_QUEUEING
/** Free a complete queue of etharp entrys */
static void free_etharp_q(struct etharp_q_entry *q)
/**
* Free a complete queue of etharp entries
*
* @param q a qeueue of etharp_q_entry's to free
*/
static void
free_etharp_q(struct etharp_q_entry *q)
{
struct etharp_q_entry *r;
LWIP_ASSERT("q != NULL", q != NULL);
@@ -222,7 +228,8 @@ etharp_tmr(void)
* @return The ARP entry index that matched or is created, ERR_MEM if no
* entry is found or could be recycled.
*/
static s8_t find_entry(struct ip_addr *ipaddr, u8_t flags)
static s8_t
find_entry(struct ip_addr *ipaddr, u8_t flags)
{
s8_t old_pending = ARP_TABLE_SIZE, old_stable = ARP_TABLE_SIZE;
s8_t empty = ARP_TABLE_SIZE;
@@ -313,8 +320,7 @@ static s8_t find_entry(struct ip_addr *ipaddr, u8_t flags)
/* no empty entry found and not allowed to recycle? */
if ((empty == ARP_TABLE_SIZE) && ((flags & ETHARP_TRY_HARD) == 0)
/* or don't create new entry, only search? */
|| ((flags & ETHARP_FIND_ONLY) != 0))
{
|| ((flags & ETHARP_FIND_ONLY) != 0)) {
return (s8_t)ERR_MEM;
}
@@ -781,7 +787,8 @@ etharp_output(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q)
* - ERR_ARG Non-unicast address given, those will not appear in ARP cache.
*
*/
err_t etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q)
err_t
etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q)
{
struct eth_addr * srcaddr = (struct eth_addr *)netif->hwaddr;
err_t result = ERR_MEM;
@@ -911,7 +918,16 @@ err_t etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q)
return result;
}
err_t etharp_request(struct netif *netif, struct ip_addr *ipaddr)
/**
* Send an ARP request packet asking for ipaddr.
*
* @param netif the lwip network interface on which to send the request
* @param ipaddr the IP address for which to ask
* @return ERR_OK if the request has been sent
* any other err_t on failure
*/
err_t
etharp_request(struct netif *netif, struct ip_addr *ipaddr)
{
struct pbuf *p;
struct eth_addr * srcaddr = (struct eth_addr *)netif->hwaddr;