Contributors: 9
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Lennert Buytenhek |
189 |
67.74% |
1 |
4.35% |
| Andrew Lunn |
33 |
11.83% |
9 |
39.13% |
| Vivien Didelot |
30 |
10.75% |
5 |
21.74% |
| Florian Fainelli |
14 |
5.02% |
3 |
13.04% |
| Zhouyang Jia |
6 |
2.15% |
1 |
4.35% |
| Tejun Heo |
3 |
1.08% |
1 |
4.35% |
| Christian Eggers |
2 |
0.72% |
1 |
4.35% |
| Vladimir Oltean |
1 |
0.36% |
1 |
4.35% |
| Neil Armstrong |
1 |
0.36% |
1 |
4.35% |
| Total |
279 |
|
23 |
|
// SPDX-License-Identifier: GPL-2.0+
/*
* net/dsa/tag_trailer.c - Trailer tag format handling
* Copyright (c) 2008-2009 Marvell Semiconductor
*/
#include <linux/etherdevice.h>
#include <linux/list.h>
#include <linux/slab.h>
#include "dsa_priv.h"
static struct sk_buff *trailer_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct dsa_port *dp = dsa_slave_to_port(dev);
u8 *trailer;
trailer = skb_put(skb, 4);
trailer[0] = 0x80;
trailer[1] = 1 << dp->index;
trailer[2] = 0x10;
trailer[3] = 0x00;
return skb;
}
static struct sk_buff *trailer_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt)
{
u8 *trailer;
int source_port;
if (skb_linearize(skb))
return NULL;
trailer = skb_tail_pointer(skb) - 4;
if (trailer[0] != 0x80 || (trailer[1] & 0xf8) != 0x00 ||
(trailer[2] & 0xef) != 0x00 || trailer[3] != 0x00)
return NULL;
source_port = trailer[1] & 7;
skb->dev = dsa_master_find_slave(dev, 0, source_port);
if (!skb->dev)
return NULL;
if (pskb_trim_rcsum(skb, skb->len - 4))
return NULL;
return skb;
}
static const struct dsa_device_ops trailer_netdev_ops = {
.name = "trailer",
.proto = DSA_TAG_PROTO_TRAILER,
.xmit = trailer_xmit,
.rcv = trailer_rcv,
.needed_tailroom = 4,
};
MODULE_LICENSE("GPL");
MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_TRAILER);
module_dsa_tag_driver(trailer_netdev_ops);