Contributors: 5
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| George McCollister |
177 |
80.82% |
2 |
14.29% |
| Vladimir Oltean |
18 |
8.22% |
7 |
50.00% |
| Linus Torvalds (pre-git) |
18 |
8.22% |
3 |
21.43% |
| Jakub Kiciński |
5 |
2.28% |
1 |
7.14% |
| Florian Fainelli |
1 |
0.46% |
1 |
7.14% |
| Total |
219 |
|
14 |
|
// SPDX-License-Identifier: GPL-2.0+
/*
* XRS700x tag format handling
* Copyright (c) 2008-2009 Marvell Semiconductor
* Copyright (c) 2020 NovaTech LLC
*/
#include <linux/bitops.h>
#include "tag.h"
#define XRS700X_NAME "xrs700x"
static struct sk_buff *xrs700x_xmit(struct sk_buff *skb, struct net_device *dev)
{
u8 *trailer;
trailer = skb_put(skb, 1);
trailer[0] = dsa_xmit_port_mask(skb, dev);
return skb;
}
static struct sk_buff *xrs700x_rcv(struct sk_buff *skb, struct net_device *dev)
{
int source_port;
u8 *trailer;
trailer = skb_tail_pointer(skb) - 1;
source_port = ffs((int)trailer[0]) - 1;
if (source_port < 0)
return NULL;
skb->dev = dsa_conduit_find_user(dev, 0, source_port);
if (!skb->dev)
return NULL;
if (pskb_trim_rcsum(skb, skb->len - 1))
return NULL;
/* Frame is forwarded by hardware, don't forward in software. */
dsa_default_offload_fwd_mark(skb);
return skb;
}
static const struct dsa_device_ops xrs700x_netdev_ops = {
.name = XRS700X_NAME,
.proto = DSA_TAG_PROTO_XRS700X,
.xmit = xrs700x_xmit,
.rcv = xrs700x_rcv,
.needed_tailroom = 1,
};
MODULE_DESCRIPTION("DSA tag driver for XRS700x switches");
MODULE_LICENSE("GPL");
MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_XRS700X, XRS700X_NAME);
module_dsa_tag_driver(xrs700x_netdev_ops);