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Some updates on "gratuitious ARP" from RFC3220. Cleanup of some code and comments.

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This commit is contained in:
likewise
2004-05-03 17:50:11 +00:00
parent 4e2260c74c
commit 4eadc22a36
3 changed files with 48 additions and 73 deletions
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30
src/include/lwip/netif.h
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@@ -52,7 +52,8 @@
/** whether the network interface is 'up'. this is
* a software flag used to control whether this network
* interface is enabled and processes traffic */
* interface is enabled and processes traffic.
* TODO: who should act on this flag, lwIP stack or driver?? */
#define NETIF_FLAG_UP 0x1U
/** if set, the netif has broadcast capability */
#define NETIF_FLAG_BROADCAST 0x2U
@@ -61,35 +62,36 @@
/** if set, the interface is configured using DHCP */
#define NETIF_FLAG_DHCP 0x08U
/** if set, the interface has an active link
* (set by the interface) */
* (set by the network interface driver) */
#define NETIF_FLAG_LINK_UP 0x10U
/** generic data structure used for all lwIP network interfaces */
/** Generic data structure used for all lwIP network interfaces.
* The following fields should be filled in by the initialization
* function for the device driver: hwaddr_len, hwaddr[], mtu, flags */
struct netif {
/** pointer to next in linked list */
struct netif *next;
/** The following fields should be filled in by the
initialization function for the device driver. */
/** IP address configuration in network byte order */
struct ip_addr ip_addr;
struct ip_addr netmask;
struct ip_addr gw;
/** This function is called by the network device driver
to pass a packet up the TCP/IP stack. */
* to pass a packet up the TCP/IP stack. */
err_t (* input)(struct pbuf *p, struct netif *inp);
/** This function is called by the IP module when it wants
to send a packet on the interface. This function typically
first resolves the hardware address, then sends the packet. */
* to send a packet on the interface. This function typically
* first resolves the hardware address, then sends the packet. */
err_t (* output)(struct netif *netif, struct pbuf *p,
struct ip_addr *ipaddr);
/** This function is called by the ARP module when it wants
to send a packet on the interface. This function outputs
the pbuf as-is on the link medium. */
* to send a packet on the interface. This function outputs
* the pbuf as-is on the link medium. */
err_t (* linkoutput)(struct netif *netif, struct pbuf *p);
/** This field can be set by the device driver and could point
to state information for the device. */
* to state information for the device. */
void *state;
#if LWIP_DHCP
/** the DHCP client state information for this netif */
@@ -101,12 +103,12 @@ struct netif {
unsigned char hwaddr[NETIF_MAX_HWADDR_LEN];
/** maximum transfer unit (in bytes) */
u16_t mtu;
/** flags (see NETIF_FLAG_ above) */
u8_t flags;
/** descriptive abbreviation */
char name[2];
/** number of this interface */
u8_t num;
/** NETIF_FLAG_* */
u8_t flags;
};
/** The list of network interfaces. */