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Fixed NULL pointer bug (#1493). Fix for memory leak bug (#1601), etharp_output_sent(). Added etharp_query for DHCP.

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likewise
2002-11-04 14:56:24 +00:00
parent 50111c8689
commit bb06293b30
2 changed files with 240 additions and 58 deletions
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38
src/include/netif/etharp.h
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@@ -63,49 +63,15 @@ PACK_STRUCT_END
#define ETHTYPE_ARP 0x0806
#define ETHTYPE_IP 0x0800
/* Initializes ARP. */
void etharp_init(void);
/* The etharp_tmr() function should be called every ETHARP_TMR_INTERVAL
microseconds (10 seconds). This function is responsible for
expiring old entries in the ARP table. */
void etharp_tmr(void);
/* Should be called for all incoming packets of IP kind. The function
does not alter the packet in any way, it just updates the ARP
table. After this function has been called, the normal TCP/IP stack
input function should be called.
The function may return a pbuf containing a packet that had
previously been queued for transmission. The device driver must
transmit this packet onto the network, and call pbuf_free() for the
pbuf.
*/
struct pbuf *etharp_ip_input(struct netif *netif, struct pbuf *p);
/* Should be called for incoming ARP packets. The pbuf in the argument
is freed by this function. If the function returns a pbuf (i.e.,
returns non-NULL), that pbuf constitutes an ARP reply and should be
sent out on the Ethernet.
The driver must call pbuf_free() for the returned pbuf when the
packet has been sent.
*/
struct pbuf *etharp_arp_input(struct netif *netif, struct eth_addr *ethaddr,
struct pbuf *p);
/* The etharp_output() function should be called for all outgoing
packets. The pbuf returned by the function should be sent out on
the Ethernet.
The function prepares the packet for transmission over the Ethernet
by adding an Ethernet header. If there is no IP -> MAC address
mapping, the function will queue the outgoing packet and return an
ARP request.
*/
struct pbuf *etharp_output(struct netif *netif, struct ip_addr *ipaddr,
struct pbuf *q);
struct pbuf *etharp_output_sent(struct pbuf *p);
struct pbuf *etharp_query(struct netif *netif, struct ip_addr *ipaddr);
#endif /* __NETIF_ARP_H__ */