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267 lines
11 KiB
267 lines
11 KiB
/* SPDX-License-Identifier: GPL-2.0 |
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* Copyright 2019-2021 NXP |
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*/ |
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#ifndef _NET_DSA_TAG_OCELOT_H |
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#define _NET_DSA_TAG_OCELOT_H |
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#include <linux/kthread.h> |
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#include <linux/packing.h> |
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#include <linux/skbuff.h> |
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struct ocelot_skb_cb { |
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struct sk_buff *clone; |
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unsigned int ptp_class; /* valid only for clones */ |
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u8 ptp_cmd; |
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u8 ts_id; |
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}; |
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#define OCELOT_SKB_CB(skb) \ |
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((struct ocelot_skb_cb *)((skb)->cb)) |
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#define IFH_TAG_TYPE_C 0 |
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#define IFH_TAG_TYPE_S 1 |
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#define IFH_REW_OP_NOOP 0x0 |
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#define IFH_REW_OP_DSCP 0x1 |
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#define IFH_REW_OP_ONE_STEP_PTP 0x2 |
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#define IFH_REW_OP_TWO_STEP_PTP 0x3 |
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#define IFH_REW_OP_ORIGIN_PTP 0x5 |
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#define OCELOT_TAG_LEN 16 |
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#define OCELOT_SHORT_PREFIX_LEN 4 |
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#define OCELOT_LONG_PREFIX_LEN 16 |
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#define OCELOT_TOTAL_TAG_LEN (OCELOT_SHORT_PREFIX_LEN + OCELOT_TAG_LEN) |
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/* The CPU injection header and the CPU extraction header can have 3 types of |
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* prefixes: long, short and no prefix. The format of the header itself is the |
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* same in all 3 cases. |
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* |
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* Extraction with long prefix: |
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* |
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* +-------------------+-------------------+------+------+------------+-------+ |
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* | ff:ff:ff:ff:ff:ff | fe:ff:ff:ff:ff:ff | 8880 | 000a | extraction | frame | |
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* | | | | | header | | |
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* +-------------------+-------------------+------+------+------------+-------+ |
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* 48 bits 48 bits 16 bits 16 bits 128 bits |
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* |
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* Extraction with short prefix: |
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* |
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* +------+------+------------+-------+ |
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* | 8880 | 000a | extraction | frame | |
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* | | | header | | |
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* +------+------+------------+-------+ |
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* 16 bits 16 bits 128 bits |
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* |
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* Extraction with no prefix: |
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* |
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* +------------+-------+ |
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* | extraction | frame | |
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* | header | | |
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* +------------+-------+ |
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* 128 bits |
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* |
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* |
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* Injection with long prefix: |
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* |
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* +-------------------+-------------------+------+------+------------+-------+ |
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* | any dmac | any smac | 8880 | 000a | injection | frame | |
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* | | | | | header | | |
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* +-------------------+-------------------+------+------+------------+-------+ |
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* 48 bits 48 bits 16 bits 16 bits 128 bits |
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* |
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* Injection with short prefix: |
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* |
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* +------+------+------------+-------+ |
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* | 8880 | 000a | injection | frame | |
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* | | | header | | |
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* +------+------+------------+-------+ |
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* 16 bits 16 bits 128 bits |
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* |
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* Injection with no prefix: |
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* |
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* +------------+-------+ |
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* | injection | frame | |
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* | header | | |
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* +------------+-------+ |
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* 128 bits |
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* |
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* The injection header looks like this (network byte order, bit 127 |
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* is part of lowest address byte in memory, bit 0 is part of highest |
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* address byte): |
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* |
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* +------+------+------+------+------+------+------+------+ |
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* 127:120 |BYPASS| MASQ | MASQ_PORT |REW_OP|REW_OP| |
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* +------+------+------+------+------+------+------+------+ |
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* 119:112 | REW_OP | |
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* +------+------+------+------+------+------+------+------+ |
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* 111:104 | REW_VAL | |
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* +------+------+------+------+------+------+------+------+ |
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* 103: 96 | REW_VAL | |
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* +------+------+------+------+------+------+------+------+ |
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* 95: 88 | REW_VAL | |
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* +------+------+------+------+------+------+------+------+ |
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* 87: 80 | REW_VAL | |
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* +------+------+------+------+------+------+------+------+ |
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* 79: 72 | RSV | |
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* +------+------+------+------+------+------+------+------+ |
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* 71: 64 | RSV | DEST | |
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* +------+------+------+------+------+------+------+------+ |
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* 63: 56 | DEST | |
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* +------+------+------+------+------+------+------+------+ |
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* 55: 48 | RSV | |
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* +------+------+------+------+------+------+------+------+ |
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* 47: 40 | RSV | SRC_PORT | RSV |TFRM_TIMER| |
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* +------+------+------+------+------+------+------+------+ |
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* 39: 32 | TFRM_TIMER | RSV | |
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* +------+------+------+------+------+------+------+------+ |
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* 31: 24 | RSV | DP | POP_CNT | CPUQ | |
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* +------+------+------+------+------+------+------+------+ |
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* 23: 16 | CPUQ | QOS_CLASS |TAG_TYPE| |
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* +------+------+------+------+------+------+------+------+ |
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* 15: 8 | PCP | DEI | VID | |
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* +------+------+------+------+------+------+------+------+ |
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* 7: 0 | VID | |
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* +------+------+------+------+------+------+------+------+ |
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* |
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* And the extraction header looks like this: |
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* |
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* +------+------+------+------+------+------+------+------+ |
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* 127:120 | RSV | REW_OP | |
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* +------+------+------+------+------+------+------+------+ |
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* 119:112 | REW_OP | REW_VAL | |
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* +------+------+------+------+------+------+------+------+ |
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* 111:104 | REW_VAL | |
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* +------+------+------+------+------+------+------+------+ |
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* 103: 96 | REW_VAL | |
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* +------+------+------+------+------+------+------+------+ |
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* 95: 88 | REW_VAL | |
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* +------+------+------+------+------+------+------+------+ |
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* 87: 80 | REW_VAL | LLEN | |
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* +------+------+------+------+------+------+------+------+ |
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* 79: 72 | LLEN | WLEN | |
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* +------+------+------+------+------+------+------+------+ |
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* 71: 64 | WLEN | RSV | |
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* +------+------+------+------+------+------+------+------+ |
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* 63: 56 | RSV | |
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* +------+------+------+------+------+------+------+------+ |
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* 55: 48 | RSV | |
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* +------+------+------+------+------+------+------+------+ |
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* 47: 40 | RSV | SRC_PORT | ACL_ID | |
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* +------+------+------+------+------+------+------+------+ |
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* 39: 32 | ACL_ID | RSV | SFLOW_ID | |
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* +------+------+------+------+------+------+------+------+ |
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* 31: 24 |ACL_HIT| DP | LRN_FLAGS | CPUQ | |
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* +------+------+------+------+------+------+------+------+ |
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* 23: 16 | CPUQ | QOS_CLASS |TAG_TYPE| |
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* +------+------+------+------+------+------+------+------+ |
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* 15: 8 | PCP | DEI | VID | |
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* +------+------+------+------+------+------+------+------+ |
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* 7: 0 | VID | |
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* +------+------+------+------+------+------+------+------+ |
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*/ |
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struct felix_deferred_xmit_work { |
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struct dsa_port *dp; |
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struct sk_buff *skb; |
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struct kthread_work work; |
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}; |
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struct felix_port { |
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void (*xmit_work_fn)(struct kthread_work *work); |
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struct kthread_worker *xmit_worker; |
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}; |
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static inline void ocelot_xfh_get_rew_val(void *extraction, u64 *rew_val) |
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{ |
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packing(extraction, rew_val, 116, 85, OCELOT_TAG_LEN, UNPACK, 0); |
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} |
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static inline void ocelot_xfh_get_len(void *extraction, u64 *len) |
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{ |
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u64 llen, wlen; |
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packing(extraction, &llen, 84, 79, OCELOT_TAG_LEN, UNPACK, 0); |
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packing(extraction, &wlen, 78, 71, OCELOT_TAG_LEN, UNPACK, 0); |
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*len = 60 * wlen + llen - 80; |
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} |
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static inline void ocelot_xfh_get_src_port(void *extraction, u64 *src_port) |
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{ |
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packing(extraction, src_port, 46, 43, OCELOT_TAG_LEN, UNPACK, 0); |
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} |
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static inline void ocelot_xfh_get_qos_class(void *extraction, u64 *qos_class) |
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{ |
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packing(extraction, qos_class, 19, 17, OCELOT_TAG_LEN, UNPACK, 0); |
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} |
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static inline void ocelot_xfh_get_tag_type(void *extraction, u64 *tag_type) |
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{ |
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packing(extraction, tag_type, 16, 16, OCELOT_TAG_LEN, UNPACK, 0); |
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} |
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static inline void ocelot_xfh_get_vlan_tci(void *extraction, u64 *vlan_tci) |
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{ |
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packing(extraction, vlan_tci, 15, 0, OCELOT_TAG_LEN, UNPACK, 0); |
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} |
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static inline void ocelot_ifh_set_bypass(void *injection, u64 bypass) |
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{ |
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packing(injection, &bypass, 127, 127, OCELOT_TAG_LEN, PACK, 0); |
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} |
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static inline void ocelot_ifh_set_rew_op(void *injection, u64 rew_op) |
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{ |
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packing(injection, &rew_op, 125, 117, OCELOT_TAG_LEN, PACK, 0); |
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} |
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static inline void ocelot_ifh_set_dest(void *injection, u64 dest) |
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{ |
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packing(injection, &dest, 67, 56, OCELOT_TAG_LEN, PACK, 0); |
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} |
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static inline void ocelot_ifh_set_qos_class(void *injection, u64 qos_class) |
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{ |
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packing(injection, &qos_class, 19, 17, OCELOT_TAG_LEN, PACK, 0); |
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} |
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static inline void seville_ifh_set_dest(void *injection, u64 dest) |
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{ |
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packing(injection, &dest, 67, 57, OCELOT_TAG_LEN, PACK, 0); |
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} |
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static inline void ocelot_ifh_set_src(void *injection, u64 src) |
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{ |
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packing(injection, &src, 46, 43, OCELOT_TAG_LEN, PACK, 0); |
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} |
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static inline void ocelot_ifh_set_tag_type(void *injection, u64 tag_type) |
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{ |
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packing(injection, &tag_type, 16, 16, OCELOT_TAG_LEN, PACK, 0); |
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} |
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static inline void ocelot_ifh_set_vid(void *injection, u64 vid) |
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{ |
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packing(injection, &vid, 11, 0, OCELOT_TAG_LEN, PACK, 0); |
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} |
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/* Determine the PTP REW_OP to use for injecting the given skb */ |
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static inline u32 ocelot_ptp_rew_op(struct sk_buff *skb) |
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{ |
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struct sk_buff *clone = OCELOT_SKB_CB(skb)->clone; |
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u8 ptp_cmd = OCELOT_SKB_CB(skb)->ptp_cmd; |
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u32 rew_op = 0; |
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if (ptp_cmd == IFH_REW_OP_TWO_STEP_PTP && clone) { |
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rew_op = ptp_cmd; |
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rew_op |= OCELOT_SKB_CB(clone)->ts_id << 3; |
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} else if (ptp_cmd == IFH_REW_OP_ORIGIN_PTP) { |
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rew_op = ptp_cmd; |
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} |
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return rew_op; |
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} |
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#endif
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