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File Content: `ocelot.h`

/* SPDX-License-Identifier: GPL-2.0
 * Copyright 2019-2021 NXP
 */

#ifndef _NET_DSA_TAG_OCELOT_H
#define _NET_DSA_TAG_OCELOT_H

#include <linux/kthread.h>
#include <linux/packing.h>
#include <linux/skbuff.h>

struct ocelot_skb_cb {
	struct sk_buff *clone;
	unsigned int ptp_class; /* valid only for clones */
	u32 tstamp_lo;
	u8 ptp_cmd;
	u8 ts_id;
};

#define OCELOT_SKB_CB(skb) \
	((struct ocelot_skb_cb *)((skb)->cb))

#define IFH_TAG_TYPE_C			0
#define IFH_TAG_TYPE_S			1

#define IFH_REW_OP_NOOP			0x0
#define IFH_REW_OP_DSCP			0x1
#define IFH_REW_OP_ONE_STEP_PTP		0x2
#define IFH_REW_OP_TWO_STEP_PTP		0x3
#define IFH_REW_OP_ORIGIN_PTP		0x5

#define OCELOT_TAG_LEN			16
#define OCELOT_SHORT_PREFIX_LEN		4
#define OCELOT_LONG_PREFIX_LEN		16
#define OCELOT_TOTAL_TAG_LEN	(OCELOT_SHORT_PREFIX_LEN + OCELOT_TAG_LEN)

/* The CPU injection header and the CPU extraction header can have 3 types of
 * prefixes: long, short and no prefix. The format of the header itself is the
 * same in all 3 cases.
 *
 * Extraction with long prefix:
 *
 * +-------------------+-------------------+------+------+------------+-------+
 * | ff:ff:ff:ff:ff:ff | fe:ff:ff:ff:ff:ff | 8880 | 000a | extraction | frame |
 * |                   |                   |      |      |   header   |       |
 * +-------------------+-------------------+------+------+------------+-------+
 *        48 bits             48 bits      16 bits 16 bits  128 bits
 *
 * Extraction with short prefix:
 *
 *                                         +------+------+------------+-------+
 *                                         | 8880 | 000a | extraction | frame |
 *                                         |      |      |   header   |       |
 *                                         +------+------+------------+-------+
 *                                         16 bits 16 bits  128 bits
 *
 * Extraction with no prefix:
 *
 *                                                       +------------+-------+
 *                                                       | extraction | frame |
 *                                                       |   header   |       |
 *                                                       +------------+-------+
 *                                                          128 bits
 *
 *
 * Injection with long prefix:
 *
 * +-------------------+-------------------+------+------+------------+-------+
 * |      any dmac     |      any smac     | 8880 | 000a | injection  | frame |
 * |                   |                   |      |      |   header   |       |
 * +-------------------+-------------------+------+------+------------+-------+
 *        48 bits             48 bits      16 bits 16 bits  128 bits
 *
 * Injection with short prefix:
 *
 *                                         +------+------+------------+-------+
 *                                         | 8880 | 000a | injection  | frame |
 *                                         |      |      |   header   |       |
 *                                         +------+------+------------+-------+
 *                                         16 bits 16 bits  128 bits
 *
 * Injection with no prefix:
 *
 *                                                       +------------+-------+
 *                                                       | injection  | frame |
 *                                                       |   header   |       |
 *                                                       +------------+-------+
 *                                                          128 bits
 *
 * The injection header looks like this (network byte order, bit 127
 * is part of lowest address byte in memory, bit 0 is part of highest
 * address byte):
 *
 *         +------+------+------+------+------+------+------+------+
 * 127:120 |BYPASS| MASQ |          MASQ_PORT        |REW_OP|REW_OP|
 *         +------+------+------+------+------+------+------+------+
 * 119:112 |                         REW_OP                        |
 *         +------+------+------+------+------+------+------+------+
 * 111:104 |                         REW_VAL                       |
 *         +------+------+------+------+------+------+------+------+
 * 103: 96 |                         REW_VAL                       |
 *         +------+------+------+------+------+------+------+------+
 *  95: 88 |                         REW_VAL                       |
 *         +------+------+------+------+------+------+------+------+
 *  87: 80 |                         REW_VAL                       |
 *         +------+------+------+------+------+------+------+------+
 *  79: 72 |                          RSV                          |
 *         +------+------+------+------+------+------+------+------+
 *  71: 64 |            RSV            |           DEST            |
 *         +------+------+------+------+------+------+------+------+
 *  63: 56 |                         DEST                          |
 *         +------+------+------+------+------+------+------+------+
 *  55: 48 |                          RSV                          |
 *         +------+------+------+------+------+------+------+------+
 *  47: 40 |  RSV |         SRC_PORT          |     RSV     |TFRM_TIMER|
 *         +------+------+------+------+------+------+------+------+
 *  39: 32 |     TFRM_TIMER     |               RSV                |
 *         +------+------+------+------+------+------+------+------+
 *  31: 24 |  RSV |  DP  |   POP_CNT   |           CPUQ            |
 *         +------+------+------+------+------+------+------+------+
 *  23: 16 |           CPUQ            |      QOS_CLASS     |TAG_TYPE|
 *         +------+------+------+------+------+------+------+------+
 *  15:  8 |         PCP        |  DEI |            VID            |
 *         +------+------+------+------+------+------+------+------+
 *   7:  0 |                          VID                          |
 *         +------+------+------+------+------+------+------+------+
 *
 * And the extraction header looks like this:
 *
 *         +------+------+------+------+------+------+------+------+
 * 127:120 |  RSV |                  REW_OP                        |
 *         +------+------+------+------+------+------+------+------+
 * 119:112 |       REW_OP       |              REW_VAL             |
 *         +------+------+------+------+------+------+------+------+
 * 111:104 |                         REW_VAL                       |
 *         +------+------+------+------+------+------+------+------+
 * 103: 96 |                         REW_VAL                       |
 *         +------+------+------+------+------+------+------+------+
 *  95: 88 |                         REW_VAL                       |
 *         +------+------+------+------+------+------+------+------+
 *  87: 80 |       REW_VAL      |               LLEN               |
 *         +------+------+------+------+------+------+------+------+
 *  79: 72 | LLEN |                      WLEN                      |
 *         +------+------+------+------+------+------+------+------+
 *  71: 64 | WLEN |                      RSV                       |
 *         +------+------+------+------+------+------+------+------+
 *  63: 56 |                          RSV                          |
 *         +------+------+------+------+------+------+------+------+
 *  55: 48 |                          RSV                          |
 *         +------+------+------+------+------+------+------+------+
 *  47: 40 | RSV  |          SRC_PORT         |       ACL_ID       |
 *         +------+------+------+------+------+------+------+------+
 *  39: 32 |       ACL_ID       |  RSV |         SFLOW_ID          |
 *         +------+------+------+------+------+------+------+------+
 *  31: 24 |ACL_HIT| DP  |  LRN_FLAGS  |           CPUQ            |
 *         +------+------+------+------+------+------+------+------+
 *  23: 16 |           CPUQ            |      QOS_CLASS     |TAG_TYPE|
 *         +------+------+------+------+------+------+------+------+
 *  15:  8 |         PCP        |  DEI |            VID            |
 *         +------+------+------+------+------+------+------+------+
 *   7:  0 |                          VID                          |
 *         +------+------+------+------+------+------+------+------+
 */

struct felix_deferred_xmit_work {
	struct dsa_port *dp;
	struct sk_buff *skb;
	struct kthread_work work;
};

struct felix_port {
	void (*xmit_work_fn)(struct kthread_work *work);
	struct kthread_worker *xmit_worker;
};

static inline void ocelot_xfh_get_rew_val(void *extraction, u64 *rew_val)
{
	packing(extraction, rew_val, 116, 85, OCELOT_TAG_LEN, UNPACK, 0);
}

static inline void ocelot_xfh_get_len(void *extraction, u64 *len)
{
	u64 llen, wlen;

	packing(extraction, &llen, 84, 79, OCELOT_TAG_LEN, UNPACK, 0);
	packing(extraction, &wlen, 78, 71, OCELOT_TAG_LEN, UNPACK, 0);

	*len = 60 * wlen + llen - 80;
}

static inline void ocelot_xfh_get_src_port(void *extraction, u64 *src_port)
{
	packing(extraction, src_port, 46, 43, OCELOT_TAG_LEN, UNPACK, 0);
}

static inline void ocelot_xfh_get_qos_class(void *extraction, u64 *qos_class)
{
	packing(extraction, qos_class, 19, 17, OCELOT_TAG_LEN, UNPACK, 0);
}

static inline void ocelot_xfh_get_tag_type(void *extraction, u64 *tag_type)
{
	packing(extraction, tag_type, 16, 16, OCELOT_TAG_LEN, UNPACK, 0);
}

static inline void ocelot_xfh_get_vlan_tci(void *extraction, u64 *vlan_tci)
{
	packing(extraction, vlan_tci, 15, 0, OCELOT_TAG_LEN, UNPACK, 0);
}

static inline void ocelot_ifh_set_bypass(void *injection, u64 bypass)
{
	packing(injection, &bypass, 127, 127, OCELOT_TAG_LEN, PACK, 0);
}

static inline void ocelot_ifh_set_rew_op(void *injection, u64 rew_op)
{
	packing(injection, &rew_op, 125, 117, OCELOT_TAG_LEN, PACK, 0);
}

static inline void ocelot_ifh_set_dest(void *injection, u64 dest)
{
	packing(injection, &dest, 67, 56, OCELOT_TAG_LEN, PACK, 0);
}

static inline void ocelot_ifh_set_qos_class(void *injection, u64 qos_class)
{
	packing(injection, &qos_class, 19, 17, OCELOT_TAG_LEN, PACK, 0);
}

static inline void seville_ifh_set_dest(void *injection, u64 dest)
{
	packing(injection, &dest, 67, 57, OCELOT_TAG_LEN, PACK, 0);
}

static inline void ocelot_ifh_set_src(void *injection, u64 src)
{
	packing(injection, &src, 46, 43, OCELOT_TAG_LEN, PACK, 0);
}

static inline void ocelot_ifh_set_tag_type(void *injection, u64 tag_type)
{
	packing(injection, &tag_type, 16, 16, OCELOT_TAG_LEN, PACK, 0);
}

static inline void ocelot_ifh_set_vid(void *injection, u64 vid)
{
	packing(injection, &vid, 11, 0, OCELOT_TAG_LEN, PACK, 0);
}

/* Determine the PTP REW_OP to use for injecting the given skb */
static inline u32 ocelot_ptp_rew_op(struct sk_buff *skb)
{
	struct sk_buff *clone = OCELOT_SKB_CB(skb)->clone;
	u8 ptp_cmd = OCELOT_SKB_CB(skb)->ptp_cmd;
	u32 rew_op = 0;

	if (ptp_cmd == IFH_REW_OP_TWO_STEP_PTP && clone) {
		rew_op = ptp_cmd;
		rew_op |= OCELOT_SKB_CB(clone)->ts_id << 3;
	} else if (ptp_cmd == IFH_REW_OP_ORIGIN_PTP) {
		rew_op = ptp_cmd;
	}

	return rew_op;
}

#endif
Name	Size	Permission
8021q.h	1476 bytes	0644
brcm.h	448 bytes	0644
lan9303.h	1228 bytes	0644
loop.h	750 bytes	0644
mv88e6xxx.h	249 bytes	0644
ocelot.h	11098 bytes	0644
sja1105.h	2705 bytes	0644
File Content: ocelot.h

File Content: `ocelot.h`
