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/
usr
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src
/
linux-headers-6.8.0-36-generic
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include
/
linux
/
dsa
/ [
drwxr-xr-x
]
upload
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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> #include <net/dsa.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 ocelot_8021q_tagger_data { void (*xmit_work_fn)(struct kthread_work *work); }; static inline struct ocelot_8021q_tagger_data * ocelot_8021q_tagger_data(struct dsa_switch *ds) { BUG_ON(ds->dst->tag_ops->proto != DSA_TAG_PROTO_OCELOT_8021Q); return ds->tagger_data; } 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_vlan_tci(void *injection, u64 vlan_tci) { packing(injection, &vlan_tci, 15, 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
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