Hello,
I just made some change of the bridge source which under kernel 2.4.20 ,to make
it work automatically without any ioctl commands such as brctl .In this module
I do ,it has only one br named BRIDGE which auto constructed in the module
initiation ,and defined as a global variable "brg".And I add one eth card(eth0)
to the br as a port .The main program is just below this page.
But now I meet one question ,that is ,when I want passup a skb to the higher
protocol layer use function netif_rx ,the higher layer not response ,the skb
must have not passup yet .Why ?I'm puzzling about it for some days .
Sorry my english is so poor:)
Thanks !
//my own bridge struct
struct Bridge{
rwlock_t lock;
rwlock_t hash_lock;
struct net_device dev;
struct Bridge_fdb_entry *hash[BR_HASH_SIZE];
};
extern struct Bridge *brg;
//the bridge initiation , will be called in module_init
struct Bridge *Bridge_fdb_init()
{
struct Bridge *br;
if ((br = kmalloc(sizeof(*br),GFP_KERNEL)) == NULL)
return NULL;
memset(br,0,sizeof(*br));
strncpy(br->dev.name,"BRIDGE",IFNAMSIZ);
ether_setup(&br->dev);
Bridge_dev_setup(&br->dev);
br->lock = RW_LOCK_UNLOCKED;
br->hash_lock = RW_LOCK_UNLOCKED;
register_netdev(&br->dev);
// netif_start_queue(&br->dev);
ethdev = dev_get_by_name("eth0");
ethdev->br_port = (struct net_bridge_port *)br;
dev_set_promiscuity(ethdev,1);
dev_hold(ethdev);
return br;
}
static void Bridge_passup(struct sk_buff *skb)
{
skb->dev = &brg->dev;
skb->pkt_type = PACKET_HOST;
skb_push(skb,ETH_HLEN);
skb->protocol = eth_type_trans(skb,&brg->dev);
netif_rx(skb);
return;
}
void Bridge_dev_setup(struct net_device *dev)
{
unsigned char dd[6] = {0x12,0x12,0x12,0x12,0x12,0x12};
memcpy(dev->dev_addr,dd,ETH_ALEN);
dev->do_ioctl = NULL;
dev->get_stats = NULL;
dev->hard_start_xmit = NULL;
dev->open = NULL;
dev->set_multicast_list = NULL;
dev->stop = NULL;
dev->accept_fastpath = NULL;
dev->tx_queue_len = 0;
dev->set_mac_address = NULL;
}
[EMAIL PROTECTED]
2005-04-24
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