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if_lagg_lacp.h revision 1.1 
      1 
      2 #ifndef _NET_LAGG_IF_LAGG_LACP_H_
      3 #define _NET_LAGG_IF_LAGG_LACP_H_
      4 
      5 /* timeout values (in sec) */
      6 #define LACP_FAST_PERIODIC_TIME		1
      7 #define LACP_SLOW_PERIODIC_TIME		30
      8 #define LACP_SHORT_TIMEOUT_TIME		(3 * LACP_FAST_PERIODIC_TIME)
      9 #define LACP_LONG_TIMEOUT_TIME		(3 * LACP_SLOW_PERIODIC_TIME)
     10 #define LACP_CHURN_DETECTION_TIME	60
     11 #define LACP_AGGREGATE_WAIT_TIME	2
     12 #define LACP_TRANSIT_DELAY		3
     13 
     14 #define LACP_MAX_PORTS		16
     15 #define LACP_SYSTEM_PRIO	0x8000U
     16 #define LACP_PORT_PRIO		LAGG_PORT_PRIO
     17 
     18 #define LACP_PARTNER_ADMIN_OPTIMISTIC	(LACP_STATE_SYNC | \
     19 					LACP_STATE_AGGREGATION | \
     20 					LACP_STATE_COLLECTING | \
     21 					LACP_STATE_DISTRIBUTING)
     22 #define LACP_PARTNER_ADMIN_STRICT	0
     23 
     24 #define SLOWPROTOCOLS_SUBTYPE_LACP	1
     25 #define SLOWPROTOCOLS_SUBTYPE_MARKER	2
     26 
     27 struct slowprothdr {
     28 	uint8_t		 sph_subtype;
     29 	uint8_t		 sph_version;
     30 } __packed;
     31 
     32 #define TLV_TYPE_TERMINATE	0
     33 
     34 #define LACP_TYPE_TERMINATE	TLV_TYPE_TERMINATE
     35 #define LACP_TYPE_ACTORINFO	1
     36 #define LACP_TYPE_PARTNERINFO	2
     37 #define LACP_TYPE_COLLECTORINFO	3
     38 
     39 #define MARKER_TYPE_TERMINATE	TLV_TYPE_TERMINATE
     40 #define MARKER_TYPE_INFO	1
     41 #define MARKER_TYPE_RESPONSE	2
     42 
     43 struct tlvhdr {
     44 	uint8_t		 tlv_type;
     45 	uint8_t		 tlv_length;
     46 } __packed;
     47 
     48 struct tlv {
     49 	uint8_t		 tlv_t;
     50 	uint8_t		 tlv_l;
     51 	void		*tlv_v;
     52 };
     53 
     54 static inline void
     55 tlv_set(struct tlvhdr *th, uint8_t t, uint8_t l)
     56 {
     57 
     58 	th->tlv_type = t;
     59 	th->tlv_length = sizeof(*th) + l;
     60 }
     61 
     62 struct lacpdu_peerinfo {
     63 	uint16_t	 lpi_system_prio;
     64 	uint8_t		 lpi_system_mac[LACP_MAC_LEN];
     65 	uint16_t	 lpi_key;
     66 	uint16_t	 lpi_port_prio;
     67 	uint16_t	 lpi_port_no;
     68 	uint8_t		 lpi_state;
     69 	uint8_t		 lpi_resv[3];
     70 } __packed;
     71 
     72 struct lacpdu_collectorinfo {
     73 	uint16_t	 lci_maxdelay;
     74 	uint8_t		 lci_resv[12];
     75 } __packed;
     76 
     77 struct lacpdu {
     78 	struct ether_header	 ldu_eh;
     79 	struct slowprothdr	 ldu_sph;
     80 
     81 	struct tlvhdr		 ldu_tlv_actor;
     82 	struct lacpdu_peerinfo	 ldu_actor;
     83 	struct tlvhdr		 ldu_tlv_partner;
     84 	struct lacpdu_peerinfo	 ldu_partner;
     85 
     86 	struct tlvhdr		 ldu_tlv_collector;
     87 	struct lacpdu_collectorinfo
     88 				 ldu_collector;
     89 
     90 	struct tlvhdr		 ldu_tlv_term;
     91 	uint8_t			 ldu_resv[50];
     92 } __packed;
     93 
     94 struct markerdu_info {
     95 	uint16_t	 mi_rq_port;
     96 	uint8_t		 mi_rq_system[LACP_MAC_LEN];
     97 	uint32_t	 mi_rq_xid;
     98 	uint8_t		 mi_pad[2];
     99 } __packed;
    100 
    101 struct markerdu {
    102 	struct ether_header	 mdu_eh;
    103 	struct slowprothdr	 mdu_sph;
    104 
    105 	struct tlvhdr		 mdu_tlv_info;
    106 	struct markerdu_info	 mdu_info;
    107 
    108 	struct tlvhdr		 mdu_tlv_term;
    109 	uint8_t			 mdu_resv[90];
    110 } __packed;
    111 
    112 /*
    113  * lacp media:
    114  *   1byte
    115  * +-------+-------+-------+-------+
    116  * | media |                 speed |
    117  * +-------+-------+-------+-------+
    118  */
    119 
    120 enum lacp_linkspeed {
    121 	LACP_LINKSPEED_UNKNOWN = 0,
    122 	LACP_LINKSPEED_10,
    123 	LACP_LINKSPEED_100,
    124 	LACP_LINKSPEED_1000,
    125 	LACP_LINKSPEED_2500,
    126 	LACP_LINKSPEED_5000,
    127 	LACP_LINKSPEED_10G,
    128 	LACP_LINKSPEED_25G,
    129 	LACP_LINKSPEED_40G,
    130 	LACP_LINKSPEED_50G,
    131 	LACP_LINKSPEED_56G,
    132 	LACP_LINKSPEED_100G,
    133 	LACP_LINKSPEED_200G,
    134 };
    135 
    136 #define LACP_MEDIA_OFFSET	24
    137 #define LACP_MEDIA_MASK		0xff000000U
    138 #define LACP_MEDIA_ETHER	(__BIT(0) << LACP_MEDIA_OFFSET)
    139 #define LACP_MEDIA_FDX		(__BIT(1) << LACP_MEDIA_OFFSET)
    140 #define LACP_MEDIA_DEFAULT	(LACP_LINKSPEED_UNKNOWN |	\
    141 				 LACP_MEDIA_ETHER | LACP_MEDIA_FDX)
    142 #endif
    143