diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/802/p8022.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'net/802/p8022.c')
-rw-r--r-- | net/802/p8022.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/net/802/p8022.c b/net/802/p8022.c new file mode 100644 index 0000000..5ae6341 --- /dev/null +++ b/net/802/p8022.c @@ -0,0 +1,65 @@ +/* + * NET3: Support for 802.2 demultiplexing off Ethernet (Token ring + * is kept separate see p8022tr.c) + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Demultiplex 802.2 encoded protocols. We match the entry by the + * SSAP/DSAP pair and then deliver to the registered datalink that + * matches. The control byte is ignored and handling of such items + * is up to the routine passed the frame. + * + * Unlike the 802.3 datalink we have a list of 802.2 entries as + * there are multiple protocols to demux. The list is currently + * short (3 or 4 entries at most). The current demux assumes this. + */ +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/skbuff.h> +#include <net/datalink.h> +#include <linux/mm.h> +#include <linux/in.h> +#include <linux/init.h> +#include <net/llc.h> +#include <net/p8022.h> + +static int p8022_request(struct datalink_proto *dl, struct sk_buff *skb, + unsigned char *dest) +{ + llc_build_and_send_ui_pkt(dl->sap, skb, dest, dl->sap->laddr.lsap); + return 0; +} + +struct datalink_proto *register_8022_client(unsigned char type, + int (*func)(struct sk_buff *skb, + struct net_device *dev, + struct packet_type *pt)) +{ + struct datalink_proto *proto; + + proto = kmalloc(sizeof(*proto), GFP_ATOMIC); + if (proto) { + proto->type[0] = type; + proto->header_length = 3; + proto->request = p8022_request; + proto->sap = llc_sap_open(type, func); + if (!proto->sap) { + kfree(proto); + proto = NULL; + } + } + return proto; +} + +void unregister_8022_client(struct datalink_proto *proto) +{ + llc_sap_close(proto->sap); + kfree(proto); +} + +EXPORT_SYMBOL(register_8022_client); +EXPORT_SYMBOL(unregister_8022_client); + +MODULE_LICENSE("GPL"); |