cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

sja1105.h (2433B)

      1/* SPDX-License-Identifier: GPL-2.0
      2 * Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
      3 */
      4
      5/* Included by drivers/net/dsa/sja1105/sja1105.h and net/dsa/tag_sja1105.c */
      6
      7#ifndef _NET_DSA_SJA1105_H
      8#define _NET_DSA_SJA1105_H
      9
     10#include <linux/skbuff.h>
     11#include <linux/etherdevice.h>
     12#include <linux/dsa/8021q.h>
     13#include <net/dsa.h>
     14
     15#define ETH_P_SJA1105				ETH_P_DSA_8021Q
     16#define ETH_P_SJA1105_META			0x0008
     17#define ETH_P_SJA1110				0xdadc
     18
     19#define SJA1105_DEFAULT_VLAN			(VLAN_N_VID - 1)
     20
     21/* IEEE 802.3 Annex 57A: Slow Protocols PDUs (01:80:C2:xx:xx:xx) */
     22#define SJA1105_LINKLOCAL_FILTER_A		0x0180C2000000ull
     23#define SJA1105_LINKLOCAL_FILTER_A_MASK		0xFFFFFF000000ull
     24/* IEEE 1588 Annex F: Transport of PTP over Ethernet (01:1B:19:xx:xx:xx) */
     25#define SJA1105_LINKLOCAL_FILTER_B		0x011B19000000ull
     26#define SJA1105_LINKLOCAL_FILTER_B_MASK		0xFFFFFF000000ull
     27
     28/* Source and Destination MAC of follow-up meta frames.
     29 * Whereas the choice of SMAC only affects the unique identification of the
     30 * switch as sender of meta frames, the DMAC must be an address that is present
     31 * in the DSA master port's multicast MAC filter.
     32 * 01-80-C2-00-00-0E is a good choice for this, as all profiles of IEEE 1588
     33 * over L2 use this address for some purpose already.
     34 */
     35#define SJA1105_META_SMAC			0x222222222222ull
     36#define SJA1105_META_DMAC			0x0180C200000Eull
     37
     38enum sja1110_meta_tstamp {
     39	SJA1110_META_TSTAMP_TX = 0,
     40	SJA1110_META_TSTAMP_RX = 1,
     41};
     42
     43struct sja1105_deferred_xmit_work {
     44	struct dsa_port *dp;
     45	struct sk_buff *skb;
     46	struct kthread_work work;
     47};
     48
     49/* Global tagger data */
     50struct sja1105_tagger_data {
     51	/* Tagger to switch */
     52	void (*xmit_work_fn)(struct kthread_work *work);
     53	void (*meta_tstamp_handler)(struct dsa_switch *ds, int port, u8 ts_id,
     54				    enum sja1110_meta_tstamp dir, u64 tstamp);
     55	/* Switch to tagger */
     56	bool (*rxtstamp_get_state)(struct dsa_switch *ds);
     57	void (*rxtstamp_set_state)(struct dsa_switch *ds, bool on);
     58};
     59
     60struct sja1105_skb_cb {
     61	struct sk_buff *clone;
     62	u64 tstamp;
     63	/* Only valid for packets cloned for 2-step TX timestamping */
     64	u8 ts_id;
     65};
     66
     67#define SJA1105_SKB_CB(skb) \
     68	((struct sja1105_skb_cb *)((skb)->cb))
     69
     70static inline struct sja1105_tagger_data *
     71sja1105_tagger_data(struct dsa_switch *ds)
     72{
     73	BUG_ON(ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1105 &&
     74	       ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1110);
     75
     76	return ds->tagger_data;
     77}
     78
     79#endif /* _NET_DSA_SJA1105_H */