0c4e85813d
Add inline for common usage of hardware header creation, and fix bug in IPV6 mcast where the assumption about negative return is an errno. Negative return from hard_header means not enough space was available,(ie -N bytes). Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/*
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* NET3: 802.3 data link hooks used for IPX 802.3
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* 802.3 isn't really a protocol data link layer. Some old IPX stuff
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* uses it however. Note that there is only one 802.3 protocol layer
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* in the system. We don't currently support different protocols
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* running raw 802.3 on different devices. Thankfully nobody else
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* has done anything like the old IPX.
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*/
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#include <linux/in.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <net/datalink.h>
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#include <net/p8022.h>
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/*
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* Place an 802.3 header on a packet. The driver will do the mac
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* addresses, we just need to give it the buffer length.
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*/
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static int p8023_request(struct datalink_proto *dl,
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struct sk_buff *skb, unsigned char *dest_node)
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{
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struct net_device *dev = skb->dev;
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dev_hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len);
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return dev_queue_xmit(skb);
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}
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/*
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* Create an 802.3 client. Note there can be only one 802.3 client
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*/
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struct datalink_proto *make_8023_client(void)
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{
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struct datalink_proto *proto = kmalloc(sizeof(*proto), GFP_ATOMIC);
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if (proto) {
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proto->header_length = 0;
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proto->request = p8023_request;
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}
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return proto;
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}
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/*
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* Destroy the 802.3 client.
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*/
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void destroy_8023_client(struct datalink_proto *dl)
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{
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kfree(dl);
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}
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EXPORT_SYMBOL(destroy_8023_client);
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EXPORT_SYMBOL(make_8023_client);
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MODULE_LICENSE("GPL");
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