diff options
Diffstat (limited to 'gpxe/src/core/proto_eth_slow.c')
-rw-r--r-- | gpxe/src/core/proto_eth_slow.c | 406 |
1 files changed, 0 insertions, 406 deletions
diff --git a/gpxe/src/core/proto_eth_slow.c b/gpxe/src/core/proto_eth_slow.c deleted file mode 100644 index b759a713..00000000 --- a/gpxe/src/core/proto_eth_slow.c +++ /dev/null @@ -1,406 +0,0 @@ -/* Copyright 2004 Linux Networx */ -#ifdef PROTO_LACP -#if 0 -#include "nic.h" -#include "timer.h" -#endif - -#define LACP_DEBUG 0 - -/* Structure definitions originally taken from the linux bond_3ad driver */ - -#define SLOW_DST_MAC "\x01\x80\xc2\x00\x00\x02" -static const char slow_dest[] = SLOW_DST_MAC; - - -#define SLOW_SUBTYPE_LACP 1 -#define SLOW_SUBTYPE_MARKER 2 - -struct slow_header { - uint8_t subtype; -}; - -struct lacp_info { - uint16_t system_priority; - uint8_t system[ETH_ALEN]; - uint16_t key; - uint16_t port_priority; - uint16_t port; - uint8_t state; - uint8_t reserved[3]; -} PACKED; - -#define LACP_CMP_LEN (2 + 6 + 2 + 2 + 2) -#define LACP_CP_LEN (2 + 6 + 2 + 2 + 2 + 1) - -/* Link Aggregation Control Protocol(LACP) data unit structure(43.4.2.2 in the 802.3ad standard) */ -struct slow_lacp { - uint8_t subtype; /* = LACP(= 0x01) */ - uint8_t version_number; - uint8_t tlv_type_actor_info; /* = actor information(type/length/value) */ -#define LACP_TLV_TERMINATOR 0 -#define LACP_TLV_ACTOR 1 -#define LACP_TLV_PARTNER 2 -#define LACP_TLV_COLLECTOR 3 - uint8_t actor_information_length; /* = 20 */ - struct lacp_info actor; - uint8_t tlv_type_partner_info; /* = partner information */ - uint8_t partner_information_length; /* = 20 */ - struct lacp_info partner; - uint8_t tlv_type_collector_info; /* = collector information */ - uint8_t collector_information_length; /* = 16 */ - uint16_t collector_max_delay; - uint8_t reserved_12[12]; - uint8_t tlv_type_terminator; /* = terminator */ - uint8_t terminator_length; /* = 0 */ - uint8_t reserved_50[50]; /* = 0 */ -} PACKED; - -/* Marker Protocol Data Unit(PDU) structure(43.5.3.2 in the 802.3ad standard) */ -struct slow_marker { - uint8_t subtype; /* = 0x02 (marker PDU) */ - uint8_t version_number; /* = 0x01 */ - uint8_t tlv_type; -#define MARKER_TLV_TERMINATOR 0 /* marker terminator */ -#define MARKER_TLV_INFO 1 /* marker information */ -#define MARKER_TLV_RESPONSE 2 /* marker response information */ - uint8_t marker_length; /* = 0x16 */ - uint16_t requester_port; /* The number assigned to the port by the requester */ - uint8_t requester_system[ETH_ALEN]; /* The requester's system id */ - uint32_t requester_transaction_id; /* The transaction id allocated by the requester, */ - uint16_t pad; /* = 0 */ - uint8_t tlv_type_terminator; /* = 0x00 */ - uint8_t terminator_length; /* = 0x00 */ - uint8_t reserved_90[90]; /* = 0 */ -} PACKED; - -union slow_union { - struct slow_header header; - struct slow_lacp lacp; - struct slow_marker marker; -}; - -#define FAST_PERIODIC_TIME (1*TICKS_PER_SEC) -#define SLOW_PERIODIC_TIME (30*TICKS_PER_SEC) -#define SHORT_TIMEOUT_TIME (3*FAST_PERIODIC_TIME) -#define LONG_TIMEOUT_TIME (3*SLOW_PERIODIC_TIME) -#define CHURN_DETECTION_TIME (60*TICKS_PER_SEC) -#define AGGREGATE_WAIT_TIME (2*TICKS_PER_SEC) - -#define LACP_ACTIVITY (1 << 0) -#define LACP_TIMEOUT (1 << 1) -#define LACP_AGGREGATION (1 << 2) -#define LACP_SYNCHRONIZATION (1 << 3) -#define LACP_COLLECTING (1 << 4) -#define LACP_DISTRIBUTING (1 << 5) -#define LACP_DEFAULTED (1 << 6) -#define LACP_EXPIRED (1 << 7) - -#define UNSELECTED 0 -#define STANDBY 1 -#define SELECTED 2 - - -struct lacp_state { - struct slow_lacp pkt; - unsigned long current_while_timer; /* Time when the LACP information expires */ - unsigned long periodic_timer; /* Time when I need to send my partner an update */ -}; - -static struct lacp_state lacp; - - -#if LACP_DEBUG > 0 -static void print_lacp_state(uint8_t state) -{ - printf("%hhx", state); - if (state & LACP_ACTIVITY) { - printf(" Activity"); - } - if (state & LACP_TIMEOUT) { - printf(" Timeout"); - } - if (state & LACP_AGGREGATION) { - printf(" Aggregation"); - } - if (state & LACP_SYNCHRONIZATION) { - printf(" Syncronization"); - } - if (state & LACP_COLLECTING) { - printf(" Collecting"); - } - if (state & LACP_DISTRIBUTING) { - printf(" Distributing"); - } - if (state & LACP_DEFAULTED) { - printf(" Defaulted"); - } - if (state & LACP_EXPIRED) { - printf(" Expired"); - } - printf("\n"); -} - -static inline void print_lacpdu(struct slow_lacp *pkt) -{ - printf("subtype version: %hhx %hhx\n", - pkt->subtype, pkt->version_number); - printf("actor_tlv %hhx", pkt->tlv_type_actor_info); - printf(" len: %hhx (\n", pkt->actor_information_length); - printf(" sys_pri: %hx", ntohs(pkt->actor.system_priority)); - printf(" mac: %!", pkt->actor.system); - printf(" key: %hx", ntohs(pkt->actor.key)); - printf(" port_pri: %hx", ntohs(pkt->actor.port_priority)); - printf(" port: %hx\n", ntohs(pkt->actor.port)); - printf(" state: "); - print_lacp_state(pkt->actor.state); -#if LACP_DEBUG > 1 - printf(" reserved: %hhx %hhx %hhx\n", - pkt->actor.reserved[0], pkt->actor.reserved[1], pkt->actor.reserved[2]); -#endif - printf(")\n"); - printf("partner_tlv: %hhx", pkt->tlv_type_partner_info); - printf(" len: %hhx (\n", pkt->partner_information_length); - printf(" sys_pri: %hx", ntohs(pkt->partner.system_priority)); - printf(" mac: %!", pkt->partner.system); - printf(" key: %hx", ntohs(pkt->partner.key)); - printf(" port_pri: %hx", ntohs(pkt->partner.port_priority)); - printf(" port: %hx\n", ntohs(pkt->partner.port)); - printf(" state: "); - print_lacp_state(pkt->partner.state); -#if LACP_DEBUG > 1 - printf(" reserved: %hhx %hhx %hhx\n", - pkt->partner.reserved[0], pkt->partner.reserved[1], pkt->partner.reserved[2]); -#endif - printf(")\n"); - printf("collector_tlv: %hhx ", pkt->tlv_type_collector_info); - printf(" len: %hhx (", pkt->collector_information_length); - printf(" max_delay: %hx", ntohs(pkt->collector_max_delay)); -#if LACP_DEBUG > 1 - printf("reserved_12: %hhx %hhx %hhx %hhx %hhx %hhx %hhx %hhx %hhx %hhx %hhx %hhx\n", - pkt->reserved_12[0], pkt->reserved_12[1], pkt->reserved_12[2], - pkt->reserved_12[3], pkt->reserved_12[4], pkt->reserved_12[5], - pkt->reserved_12[6], pkt->reserved_12[7], pkt->reserved_12[8], - pkt->reserved_12[9], pkt->reserved_12[10], pkt->reserved_12[11]); -#endif - printf(" )\n"); - printf("terminator_tlv: %hhx", pkt->tlv_type_terminator); - printf(" len: %hhx ()\n", pkt->terminator_length); -} - -static inline unsigned long lacp_timer_val(unsigned long now, unsigned long when) -{ - return when?(when - now)/TICKS_PER_SEC : 0; -} -static void print_lacp(const char *which, struct slow_lacp *pkt, unsigned long now) -{ - printf("%s\n", which); - print_lacpdu(pkt); - printf("timers: c %ds p %ds\n", - lacp_timer_val(now, lacp.current_while_timer), - lacp_timer_val(now, lacp.periodic_timer) - ); - printf("\n"); -} -#else /* LACP_DEBUG */ -#define print_lacp(which, pkt, now) do {} while(0) -#endif /* LACP_DEBUG */ - -static void lacp_init_state(const uint8_t *mac) -{ - memset(&lacp, 0, sizeof(lacp)); - - /* Initialize the packet constants */ - lacp.pkt.subtype = 1; - lacp.pkt.version_number = 1; - - - /* The default state of my interface */ - lacp.pkt.tlv_type_actor_info = LACP_TLV_ACTOR; - lacp.pkt.actor_information_length = 0x14; - lacp.pkt.actor.system_priority = htons(1); - memcpy(lacp.pkt.actor.system, mac, ETH_ALEN); - lacp.pkt.actor.key = htons(1); - lacp.pkt.actor.port = htons(1); - lacp.pkt.actor.port_priority = htons(1); - lacp.pkt.actor.state = - LACP_SYNCHRONIZATION | - LACP_COLLECTING | - LACP_DISTRIBUTING | - LACP_DEFAULTED; - - /* Set my partner defaults */ - lacp.pkt.tlv_type_partner_info = LACP_TLV_PARTNER; - lacp.pkt.partner_information_length = 0x14; - lacp.pkt.partner.system_priority = htons(1); - /* memset(lacp.pkt.parnter_system, 0, ETH_ALEN); */ - lacp.pkt.partner.key = htons(1); - lacp.pkt.partner.port = htons(1); - lacp.pkt.partner.port_priority = htons(1); - lacp.pkt.partner.state = - LACP_ACTIVITY | - LACP_SYNCHRONIZATION | - LACP_COLLECTING | - LACP_DISTRIBUTING | - LACP_DEFAULTED; - - lacp.pkt.tlv_type_collector_info = LACP_TLV_COLLECTOR; - lacp.pkt.collector_information_length = 0x10; - lacp.pkt.collector_max_delay = htons(0x8000); /* ???? */ - - lacp.pkt.tlv_type_terminator = LACP_TLV_TERMINATOR; - lacp.pkt.terminator_length = 0; -} - -#define LACP_NTT_MASK (LACP_ACTIVITY | LACP_TIMEOUT | \ - LACP_SYNCHRONIZATION | LACP_AGGREGATION) - -static inline int lacp_update_ntt(struct slow_lacp *pkt) -{ - int ntt = 0; - if ((memcmp(&pkt->partner, &lacp.pkt.actor, LACP_CMP_LEN) != 0) || - ((pkt->partner.state & LACP_NTT_MASK) != - (lacp.pkt.actor.state & LACP_NTT_MASK))) - { - ntt = 1; - } - return ntt; -} - -static inline void lacp_record_pdu(struct slow_lacp *pkt) -{ - memcpy(&lacp.pkt.partner, &pkt->actor, LACP_CP_LEN); - - lacp.pkt.actor.state &= ~LACP_DEFAULTED; - lacp.pkt.partner.state &= ~LACP_SYNCHRONIZATION; - if ((memcmp(&pkt->partner, &lacp.pkt.actor, LACP_CMP_LEN) == 0) && - ((pkt->partner.state & LACP_AGGREGATION) == - (lacp.pkt.actor.state & LACP_AGGREGATION))) - { - lacp.pkt.partner.state |= LACP_SYNCHRONIZATION; - } - if (!(pkt->actor.state & LACP_AGGREGATION)) { - lacp.pkt.partner.state |= LACP_SYNCHRONIZATION; - } - - /* ACTIVITY? */ -} - -static inline int lacp_timer_expired(unsigned long now, unsigned long when) -{ - return when && (now > when); -} - -static inline void lacp_start_periodic_timer(unsigned long now) -{ - if ((lacp.pkt.partner.state & LACP_ACTIVITY) || - (lacp.pkt.actor.state & LACP_ACTIVITY)) { - lacp.periodic_timer = now + - (((lacp.pkt.partner.state & LACP_TIMEOUT)? - FAST_PERIODIC_TIME : SLOW_PERIODIC_TIME)); - } -} - -static inline void lacp_start_current_while_timer(unsigned long now) -{ - lacp.current_while_timer = now + - ((lacp.pkt.actor.state & LACP_TIMEOUT) ? - SHORT_TIMEOUT_TIME : LONG_TIMEOUT_TIME); - - lacp.pkt.actor.state &= ~LACP_EXPIRED; -} - -static void send_lacp_reports(unsigned long now, int ntt) -{ - if (memcmp(nic.node_addr, lacp.pkt.actor.system, ETH_ALEN) != 0) { - lacp_init_state(nic.node_addr); - } - /* If the remote information has expired I need to take action */ - if (lacp_timer_expired(now, lacp.current_while_timer)) { - if (!(lacp.pkt.actor.state & LACP_EXPIRED)) { - lacp.pkt.partner.state &= ~LACP_SYNCHRONIZATION; - lacp.pkt.partner.state |= LACP_TIMEOUT; - lacp.pkt.actor.state |= LACP_EXPIRED; - lacp.current_while_timer = now + SHORT_TIMEOUT_TIME; - ntt = 1; - } - else { - lacp_init_state(nic.node_addr); - } - } - /* If the periodic timer has expired I need to transmit */ - if (lacp_timer_expired(now, lacp.periodic_timer)) { - ntt = 1; - /* Reset by lacp_start_periodic_timer */ - } - if (ntt) { - eth_transmit(slow_dest, ETH_P_SLOW, sizeof(lacp.pkt), &lacp.pkt); - - /* Restart the periodic timer */ - lacp_start_periodic_timer(now); - - print_lacp("Trasmitted", &lacp.pkt, now); - } -} - -static inline void send_eth_slow_reports(unsigned long now) -{ - send_lacp_reports(now, 0); -} - -static inline void process_eth_slow(unsigned short ptype, unsigned long now) -{ - union slow_union *pkt; - if ((ptype != ETH_P_SLOW) || - (nic.packetlen < (ETH_HLEN + sizeof(pkt->header)))) { - return; - } - pkt = (union slow_union *)&nic.packet[ETH_HLEN]; - if ((pkt->header.subtype == SLOW_SUBTYPE_LACP) && - (nic.packetlen >= ETH_HLEN + sizeof(pkt->lacp))) { - int ntt; - if (memcmp(nic.node_addr, lacp.pkt.actor.system, ETH_ALEN) != 0) { - lacp_init_state(nic.node_addr); - } - /* As long as nic.packet is 2 byte aligned all is good */ - print_lacp("Received", &pkt->lacp, now); - /* I don't actually implement the MUX or SELECT - * machines. - * - * What logically happens when the client and I - * disagree about an aggregator is the current - * aggregtator is unselected. The MUX machine places - * me in DETACHED. The SELECT machine runs and - * reslects the same aggregator. If I go through - * these steps fast enough an outside observer can not - * notice this. - * - * Since the process will not generate any noticeable - * effect it does not need an implmenetation. This - * keeps the code simple and the code and binary - * size down. - */ - /* lacp_update_selected(&pkt->lacp); */ - ntt = lacp_update_ntt(&pkt->lacp); - lacp_record_pdu(&pkt->lacp); - lacp_start_current_while_timer(now); - send_lacp_reports(now, ntt); - } - /* If we receive a marker information packet return it */ - else if ((pkt->header.subtype == SLOW_SUBTYPE_MARKER) && - (nic.packetlen >= ETH_HLEN + sizeof(pkt->marker)) && - (pkt->marker.tlv_type == MARKER_TLV_INFO) && - (pkt->marker.marker_length == 0x16)) - { - pkt->marker.tlv_type = MARKER_TLV_RESPONSE; - eth_transmit(slow_dest, ETH_P_SLOW, - sizeof(pkt->marker), &pkt->marker); - } - - } -#else - -#define send_eth_slow_reports(now) do {} while(0) -#define process_eth_slow(ptype, now) do {} while(0) - -#endif |