From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- net/802/p8023.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 net/802/p8023.c (limited to 'net/802/p8023.c') diff --git a/net/802/p8023.c b/net/802/p8023.c new file mode 100644 index 000000000..19cd56990 --- /dev/null +++ b/net/802/p8023.c @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * NET3: 802.3 data link hooks used for IPX 802.3 + * + * 802.3 isn't really a protocol data link layer. Some old IPX stuff + * uses it however. Note that there is only one 802.3 protocol layer + * in the system. We don't currently support different protocols + * running raw 802.3 on different devices. Thankfully nobody else + * has done anything like the old IPX. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include + +/* + * Place an 802.3 header on a packet. The driver will do the mac + * addresses, we just need to give it the buffer length. + */ +static int p8023_request(struct datalink_proto *dl, + struct sk_buff *skb, unsigned char *dest_node) +{ + struct net_device *dev = skb->dev; + + dev_hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len); + return dev_queue_xmit(skb); +} + +/* + * Create an 802.3 client. Note there can be only one 802.3 client + */ +struct datalink_proto *make_8023_client(void) +{ + struct datalink_proto *proto = kmalloc(sizeof(*proto), GFP_ATOMIC); + + if (proto) { + proto->header_length = 0; + proto->request = p8023_request; + } + return proto; +} + +/* + * Destroy the 802.3 client. + */ +void destroy_8023_client(struct datalink_proto *dl) +{ + kfree(dl); +} + +EXPORT_SYMBOL(destroy_8023_client); +EXPORT_SYMBOL(make_8023_client); + +MODULE_LICENSE("GPL"); -- cgit v1.2.3