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First sketch of a new net device API.

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This commit is contained in:
Michael Brown
2006-04-19 12:07:46 +00:00
parent bdc8190c8d
commit 6209bd873a
4 changed files with 196 additions and 25 deletions
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1
src/include/errno.h
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@@ -124,6 +124,7 @@
#define EINVAL 0xd3
#define ENOENT 0xd4
#define EAFNOSUPPORT 0xd5
#define EAGAIN 0xd6
/* Data structures and declarations */

11
src/include/gpxe/if_ether.h
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@@ -12,11 +12,12 @@
#define ETH_MAX_MTU (ETH_FRAME_LEN-ETH_HLEN)
#endif
#define ETH_P_IP 0x0800 /* Internet Protocl Packet */
#define ETH_P_ARP 0x0806 /* Address Resolution Protocol */
#define ETH_P_RARP 0x8035 /* Reverse Address resolution Protocol */
#define ETH_P_IPV6 0x86DD /* IPv6 over blueblook */
#define ETH_P_SLOW 0x8809 /* Ethernet slow protocols */
#define ETH_P_RAW 0x0000 /* Raw packet */
#define ETH_P_IP 0x0800 /* Internet Protocl Packet */
#define ETH_P_ARP 0x0806 /* Address Resolution Protocol */
#define ETH_P_RARP 0x8035 /* Reverse Address resolution Protocol */
#define ETH_P_IPV6 0x86DD /* IPv6 over blueblook */
#define ETH_P_SLOW 0x8809 /* Ethernet slow protocols */
/** An Ethernet link-layer header */
struct ethhdr {

46
src/include/gpxe/netdevice.h
View File

@@ -100,6 +100,8 @@ struct net_device {
* For Ethernet, this is the MAC address.
*/
uint8_t ll_addr[MAX_LLH_ADDR_LEN];
/** Linked list of network devices */
struct list_head devices;
/** List of network interfaces */
struct list_head interfaces;
/** Driver private data */
@@ -117,7 +119,7 @@ struct net_interface {
/** Underlying net device */
struct net_device *netdev;
/** Linked list of interfaces for this device */
struct list_head list;
struct list_head interfaces;
/** Network-layer protocol
*
* This is an ETH_P_XXX constant, in network byte order.
@@ -127,21 +129,6 @@ struct net_interface {
uint8_t net_addr_len;
/** Network-layer address */
uint8_t net_addr[MAX_NET_ADDR_LEN];
/** Packet processor
*
* @v netif Network interface
* @v pkb Packet buffer
* @ret rc Return status code
*
* This method is called for packets arriving on the
* associated network device that match this interface's
* network-layer protocol.
*
* When this method is called, the link-layer header will
* already have been stripped from the packet.
*/
int ( * process ) ( struct net_interface *netif,
struct pk_buff *pkb );
/** Fill in packet metadata
*
* @v netif Network interface
@@ -154,6 +141,21 @@ struct net_interface {
*/
int ( * add_llh_metadata ) ( struct net_interface *netif,
struct pk_buff *pkb );
/** Received packet processor
*
* @v netif Network interface
* @v pkb Packet buffer
* @ret rc Return status code
*
* This method is called for packets arriving on the
* associated network device that match this interface's
* network-layer protocol.
*
* When this method is called, the link-layer header will
* already have been stripped from the packet.
*/
int ( * rx_packet ) ( struct net_interface *netif,
struct pk_buff *pkb );
};
/**
@@ -168,15 +170,22 @@ static inline struct net_interface *
netdev_find_netif ( const struct net_device *netdev, uint16_t net_proto ) {
struct net_interface *netif;
list_for_each_entry ( netif, &netdev->interfaces, list ) {
list_for_each_entry ( netif, &netdev->interfaces, interfaces ) {
if ( netif->net_proto == net_proto )
return netif;
}
return NULL;
}
extern int register_netdevice ( struct net_device *netdev );
extern void unregister_netdevice ( struct net_device *netdev );
extern int netdev_send ( struct net_device *netdev, struct pk_buff *pkb );
extern int netdev_poll ( struct net_device *netdev, struct pk_buff *pkb );
extern int netif_send ( struct net_interface *netif, struct pk_buff *pkb );
extern int netdev_rx_packet ( struct net_device *netdev, struct pk_buff *pkb );
extern int net_poll ( struct pk_buff *pkb, struct net_device **netdev );
extern struct net_device static_single_netdev;
@@ -186,9 +195,6 @@ extern struct net_device static_single_netdev;
static_single_netdev.priv = priv_data; \
&static_single_netdev; } )
extern int register_netdevice ( struct net_device *netdev );
extern void unregister_netdevice ( struct net_device *netdev );
static inline void free_netdevice ( struct net_device *netdev __unused ) {
/* Do nothing */