+++ /dev/null
-/* 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
#define ERRFILE_wpa_psk ( ERRFILE_NET | 0x00270000 )
#define ERRFILE_wpa_tkip ( ERRFILE_NET | 0x00280000 )
#define ERRFILE_wpa_ccmp ( ERRFILE_NET | 0x00290000 )
+#define ERRFILE_eth_slow ( ERRFILE_NET | 0x002a0000 )
#define ERRFILE_image ( ERRFILE_IMAGE | 0x00000000 )
#define ERRFILE_elf ( ERRFILE_IMAGE | 0x00010000 )
--- /dev/null
+#ifndef _IPXE_ETH_SLOW_H
+#define _IPXE_ETH_SLOW_H
+
+/** @file
+ *
+ * Ethernet slow protocols
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** Slow protocols header */
+struct eth_slow_header {
+ /** Slow protocols subtype */
+ uint8_t subtype;
+ /** Subtype version number */
+ uint8_t version;
+} __attribute__ (( packed ));
+
+/** LACP subtype */
+#define ETH_SLOW_SUBTYPE_LACP 1
+
+/** LACP version number */
+#define ETH_SLOW_LACP_VERSION 1
+
+/** Marker subtype */
+#define ETH_SLOW_SUBTYPE_MARKER 2
+
+/** Marker version number */
+#define ETH_SLOW_MARKER_VERSION 1
+
+/** TLV (type, length, value) header */
+struct eth_slow_tlv_header {
+ /** Type
+ *
+ * This is an ETH_SLOW_TLV_XXX constant.
+ */
+ uint8_t type;
+ /** Length
+ *
+ * The length includes the TLV header (except for a TLV
+ * terminator, which has a length of zero).
+ */
+ uint8_t length;
+} __attribute__ (( packed ));
+
+/** Terminator type */
+#define ETH_SLOW_TLV_TERMINATOR 0
+
+/** Terminator length */
+#define ETH_SLOW_TLV_TERMINATOR_LEN 0
+
+/** LACP actor type */
+#define ETH_SLOW_TLV_LACP_ACTOR 1
+
+/** LACP actor length */
+#define ETH_SLOW_TLV_LACP_ACTOR_LEN \
+ ( sizeof ( struct eth_slow_lacp_entity_tlv ) )
+
+/** LACP partner type */
+#define ETH_SLOW_TLV_LACP_PARTNER 2
+
+/** LACP partner length */
+#define ETH_SLOW_TLV_LACP_PARTNER_LEN \
+ ( sizeof ( struct eth_slow_lacp_entity_tlv ) )
+
+/** LACP collector type */
+#define ETH_SLOW_TLV_LACP_COLLECTOR 3
+
+/** LACP collector length */
+#define ETH_SLOW_TLV_LACP_COLLECTOR_LEN \
+ ( sizeof ( struct eth_slow_lacp_collector_tlv ) )
+
+/** Marker request type */
+#define ETH_SLOW_TLV_MARKER_REQUEST 1
+
+/** Marker request length */
+#define ETH_SLOW_TLV_MARKER_REQUEST_LEN \
+ ( sizeof ( struct eth_slow_marker_tlv ) )
+
+/** Marker response type */
+#define ETH_SLOW_TLV_MARKER_RESPONSE 2
+
+/** Marker response length */
+#define ETH_SLOW_TLV_MARKER_RESPONSE_LEN \
+ ( sizeof ( struct eth_slow_marker_tlv ) )
+
+/** Terminator TLV */
+struct eth_slow_terminator_tlv {
+ /** TLV header */
+ struct eth_slow_tlv_header tlv;
+} __attribute__ (( packed ));
+
+/** LACP entity (actor or partner) TLV */
+struct eth_slow_lacp_entity_tlv {
+ /** TLV header */
+ struct eth_slow_tlv_header tlv;
+ /** System priority
+ *
+ * Used to determine the order in which ports are selected for
+ * aggregation.
+ */
+ uint16_t system_priority;
+ /** System identifier
+ *
+ * Used to uniquely identify the system (i.e. the entity with
+ * potentially multiple ports).
+ */
+ uint8_t system[ETH_ALEN];
+ /** Key
+ *
+ * Used to uniquely identify a group of aggregatable ports
+ * within a system.
+ */
+ uint16_t key;
+ /** Port priority
+ *
+ * Used to determine the order in which ports are selected for
+ * aggregation.
+ */
+ uint16_t port_priority;
+ /** Port identifier
+ *
+ * Used to uniquely identify a port within a system.
+ */
+ uint16_t port;
+ /** State
+ *
+ * This is the bitwise OR of zero or more LACP_STATE_XXX
+ * constants.
+ */
+ uint8_t state;
+ /** Reserved */
+ uint8_t reserved[3];
+} __attribute__ (( packed ));
+
+/** Maximum system priority */
+#define LACP_SYSTEM_PRIORITY_MAX 0xffff
+
+/** Maximum port priority */
+#define LACP_PORT_PRIORITY_MAX 0xff
+
+/** LACP entity is active
+ *
+ * Represented by the state character "A"/"a"
+ */
+#define LACP_STATE_ACTIVE 0x01
+
+/** LACP timeout is short
+ *
+ * Short timeout is one second, long timeout is 30s
+ *
+ * Represented by the state character "F"/"f"
+ */
+#define LACP_STATE_FAST 0x02
+
+/** LACP link is aggregateable
+ *
+ * Represented by the state characters "G"/"g"
+ */
+#define LACP_STATE_AGGREGATABLE 0x04
+
+/** LACP link is in synchronisation
+ *
+ * Represented by the state characters "S"/"s"
+ */
+#define LACP_STATE_IN_SYNC 0x08
+
+/** LACP link is collecting (receiving)
+ *
+ * Represented by the state characters "C"/"c"
+ */
+#define LACP_STATE_COLLECTING 0x10
+
+/** LACP link is distributing (transmitting)
+ *
+ * Represented by the state characters "D"/"d"
+ */
+#define LACP_STATE_DISTRIBUTING 0x20
+
+/** LACP entity is using defaulted partner information
+ *
+ * Represented by the state characters "L"/"l"
+ */
+#define LACP_STATE_DEFAULTED 0x40
+
+/** LACP entity receive state machine is in EXPIRED
+ *
+ * Represented by the state characters "X"/"x"
+ */
+#define LACP_STATE_EXPIRED 0x80
+
+/** LACP collector TLV */
+struct eth_slow_lacp_collector_tlv {
+ /** TLV header */
+ struct eth_slow_tlv_header tlv;
+ /** Maximum delay (in 10us increments) */
+ uint16_t max_delay;
+ /** Reserved */
+ uint8_t reserved[12];
+} __attribute__ (( packed ));
+
+/** Marker TLV */
+struct eth_slow_marker_tlv {
+ /** TLV header */
+ struct eth_slow_tlv_header tlv;
+ /** Requester port */
+ uint16_t port;
+ /** Requester system */
+ uint8_t system[ETH_ALEN];
+ /** Requester transaction ID */
+ uint32_t xact;
+ /** Padding */
+ uint16_t pad;
+} __attribute__ (( packed ));
+
+/** LACP packet */
+struct eth_slow_lacp {
+ /** Slow protocols header */
+ struct eth_slow_header header;
+ /** Actor information */
+ struct eth_slow_lacp_entity_tlv actor;
+ /** Partner information */
+ struct eth_slow_lacp_entity_tlv partner;
+ /** Collector information */
+ struct eth_slow_lacp_collector_tlv collector;
+ /** Terminator */
+ struct eth_slow_terminator_tlv terminator;
+ /** Reserved */
+ uint8_t reserved[50];
+} __attribute__ (( packed ));
+
+/** Marker packet */
+struct eth_slow_marker {
+ /** Slow protocols header */
+ struct eth_slow_header header;
+ /** Marker information */
+ struct eth_slow_marker_tlv marker;
+ /** Terminator */
+ struct eth_slow_terminator_tlv terminator;
+ /** Reserved */
+ uint8_t reserved[90];
+} __attribute__ (( packed ));
+
+/** Slow protocols packet */
+union eth_slow_packet {
+ /** Slow protocols header */
+ struct eth_slow_header header;
+ /** LACP packet */
+ struct eth_slow_lacp lacp;
+ /** Marker packet */
+ struct eth_slow_marker marker;
+} __attribute__ (( packed ));
+
+#endif /* _IPXE_ETH_SLOW_H */
--- /dev/null
+/*
+ * Copyright (C) 2010 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdlib.h>
+#include <string.h>
+#include <byteswap.h>
+#include <errno.h>
+#include <ipxe/iobuf.h>
+#include <ipxe/netdevice.h>
+#include <ipxe/if_ether.h>
+#include <ipxe/ethernet.h>
+#include <ipxe/eth_slow.h>
+
+/** @file
+ *
+ * Ethernet slow protocols
+ *
+ * We implement a very simple passive LACP entity, that pretends that
+ * each port is the only port on an individual system. We avoid the
+ * need for timeout logic (and retaining local state about our
+ * partner) by requesting the same timeout period (1s or 30s) as our
+ * partner requests, and then simply responding to every packet the
+ * partner sends us.
+ */
+
+struct net_protocol eth_slow_protocol;
+
+/** Slow protocols multicast address */
+static const uint8_t eth_slow_address[ETH_ALEN] =
+ { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x02 };
+
+/**
+ * Name LACP TLV type
+ *
+ * @v type LACP TLV type
+ * @ret name Name of LACP TLV type
+ */
+static inline __attribute__ (( always_inline )) const char *
+eth_slow_lacp_tlv_name ( uint8_t type ) {
+ switch ( type ) {
+ case ETH_SLOW_TLV_TERMINATOR: return "terminator";
+ case ETH_SLOW_TLV_LACP_ACTOR: return "actor";
+ case ETH_SLOW_TLV_LACP_PARTNER: return "partner";
+ case ETH_SLOW_TLV_LACP_COLLECTOR: return "collector";
+ default: return "<invalid>";
+ }
+}
+
+/**
+ * Name marker TLV type
+ *
+ * @v type Marker TLV type
+ * @ret name Name of marker TLV type
+ */
+static inline __attribute__ (( always_inline )) const char *
+eth_slow_marker_tlv_name ( uint8_t type ) {
+ switch ( type ) {
+ case ETH_SLOW_TLV_TERMINATOR: return "terminator";
+ case ETH_SLOW_TLV_MARKER_REQUEST: return "request";
+ case ETH_SLOW_TLV_MARKER_RESPONSE: return "response";
+ default: return "<invalid>";
+ }
+}
+
+/**
+ * Name LACP state
+ *
+ * @v state LACP state
+ * @ret name LACP state name
+ */
+static const char * eth_slow_lacp_state_name ( uint8_t state ) {
+ static char state_chars[] = "AFGSRTLX";
+ unsigned int i;
+
+ for ( i = 0 ; i < 8 ; i++ ) {
+ state_chars[i] |= 0x20;
+ if ( state & ( 1 << i ) )
+ state_chars[i] &= ~0x20;
+ }
+ return state_chars;
+}
+
+/**
+ * Dump LACP packet
+ *
+ * @v iobuf I/O buffer
+ * @v netdev Network device
+ * @v label "RX" or "TX"
+ */
+static void eth_slow_lacp_dump ( struct io_buffer *iobuf,
+ struct net_device *netdev,
+ const char *label ) {
+ union eth_slow_packet *eth_slow = iobuf->data;
+ struct eth_slow_lacp *lacp = ð_slow->lacp;
+
+ DBGC ( netdev,
+ "SLOW %p %s LACP actor (%04x,%s,%04x,%02x,%04x) [%s]\n",
+ netdev, label, ntohs ( lacp->actor.system_priority ),
+ eth_ntoa ( lacp->actor.system ),
+ ntohs ( lacp->actor.key ),
+ ntohs ( lacp->actor.port_priority ),
+ ntohs ( lacp->actor.port ),
+ eth_slow_lacp_state_name ( lacp->actor.state ) );
+ DBGC ( netdev,
+ "SLOW %p %s LACP partner (%04x,%s,%04x,%02x,%04x) [%s]\n",
+ netdev, label, ntohs ( lacp->partner.system_priority ),
+ eth_ntoa ( lacp->partner.system ),
+ ntohs ( lacp->partner.key ),
+ ntohs ( lacp->partner.port_priority ),
+ ntohs ( lacp->partner.port ),
+ eth_slow_lacp_state_name ( lacp->partner.state ) );
+ DBGC ( netdev, "SLOW %p %s LACP collector %04x (%d us)\n",
+ netdev, label, ntohs ( lacp->collector.max_delay ),
+ ( ntohs ( lacp->collector.max_delay ) * 10 ) );
+ DBGC2_HDA ( netdev, 0, iobuf, iob_len ( iobuf ) );
+}
+
+/**
+ * Process incoming LACP packet
+ *
+ * @v iobuf I/O buffer
+ * @v netdev Network device
+ * @ret rc Return status code
+ */
+static int eth_slow_lacp_rx ( struct io_buffer *iobuf,
+ struct net_device *netdev ) {
+ union eth_slow_packet *eth_slow = iobuf->data;
+ struct eth_slow_lacp *lacp = ð_slow->lacp;
+
+ eth_slow_lacp_dump ( iobuf, netdev, "RX" );
+
+ /* Build response */
+ memset ( lacp->reserved, 0, sizeof ( lacp->reserved ) );
+ memset ( &lacp->terminator, 0, sizeof ( lacp->terminator ) );
+ memset ( &lacp->collector, 0, sizeof ( lacp->collector ) );
+ lacp->collector.tlv.type = ETH_SLOW_TLV_LACP_COLLECTOR;
+ lacp->collector.tlv.length = ETH_SLOW_TLV_LACP_COLLECTOR_LEN;
+ memcpy ( &lacp->partner, &lacp->actor, sizeof ( lacp->partner ) );
+ lacp->partner.tlv.type = ETH_SLOW_TLV_LACP_PARTNER;
+ lacp->partner.tlv.length = ETH_SLOW_TLV_LACP_PARTNER_LEN;
+ memset ( &lacp->partner.reserved, 0,
+ sizeof ( lacp->partner.reserved ) );
+ memset ( &lacp->actor, 0, sizeof ( lacp->actor ) );
+ lacp->actor.tlv.type = ETH_SLOW_TLV_LACP_ACTOR;
+ lacp->actor.tlv.length = ETH_SLOW_TLV_LACP_ACTOR_LEN;
+ lacp->actor.system_priority = htons ( LACP_SYSTEM_PRIORITY_MAX );
+ memcpy ( lacp->actor.system, netdev->ll_addr,
+ sizeof ( lacp->actor.system ) );
+ lacp->actor.key = htons ( 1 );
+ lacp->actor.port_priority = htons ( LACP_PORT_PRIORITY_MAX );
+ lacp->actor.port = htons ( 1 );
+ lacp->actor.state = ( LACP_STATE_IN_SYNC |
+ LACP_STATE_COLLECTING |
+ LACP_STATE_DISTRIBUTING |
+ ( lacp->partner.state & LACP_STATE_FAST ) );
+ lacp->header.version = ETH_SLOW_LACP_VERSION;
+
+ /* Send response */
+ eth_slow_lacp_dump ( iobuf, netdev, "TX" );
+ return net_tx ( iobuf, netdev, ð_slow_protocol, eth_slow_address );
+}
+
+/**
+ * Dump marker packet
+ *
+ * @v iobuf I/O buffer
+ * @v netdev Network device
+ * @v label "RX" or "TX"
+ */
+static void eth_slow_marker_dump ( struct io_buffer *iobuf,
+ struct net_device *netdev,
+ const char *label ) {
+ union eth_slow_packet *eth_slow = iobuf->data;
+ struct eth_slow_marker *marker = ð_slow->marker;
+
+ DBGC ( netdev, "SLOW %p %s marker %s port %04x system %s xact %08x\n",
+ netdev, label,
+ eth_slow_marker_tlv_name ( marker->marker.tlv.type ),
+ ntohs ( marker->marker.port ),
+ eth_ntoa ( marker->marker.system ),
+ ntohl ( marker->marker.xact ) );
+ DBGC2_HDA ( netdev, 0, iobuf, iob_len ( iobuf ) );
+}
+
+/**
+ * Process incoming marker packet
+ *
+ * @v iobuf I/O buffer
+ * @v netdev Network device
+ * @ret rc Return status code
+ */
+static int eth_slow_marker_rx ( struct io_buffer *iobuf,
+ struct net_device *netdev ) {
+ union eth_slow_packet *eth_slow = iobuf->data;
+ struct eth_slow_marker *marker = ð_slow->marker;
+
+ eth_slow_marker_dump ( iobuf, netdev, "RX" );
+
+ if ( marker->marker.tlv.type == ETH_SLOW_TLV_MARKER_REQUEST ) {
+ /* Send marker response */
+ marker->marker.tlv.type = ETH_SLOW_TLV_MARKER_RESPONSE;
+ eth_slow_marker_dump ( iobuf, netdev, "TX" );
+ return net_tx ( iobuf, netdev, ð_slow_protocol,
+ eth_slow_address );
+ } else {
+ /* Discard all other marker packets */
+ free_iob ( iobuf );
+ return -EINVAL;
+ }
+}
+
+/**
+ * Process incoming slow packet
+ *
+ * @v iobuf I/O buffer
+ * @v netdev Network device
+ * @v ll_source Link-layer source address
+ * @ret rc Return status code
+ */
+static int eth_slow_rx ( struct io_buffer *iobuf,
+ struct net_device *netdev,
+ const void *ll_source __unused ) {
+ union eth_slow_packet *eth_slow = iobuf->data;
+
+ /* Sanity checks */
+ if ( iob_len ( iobuf ) < sizeof ( *eth_slow ) ) {
+ free_iob ( iobuf );
+ return -EINVAL;
+ }
+
+ /* Handle according to subtype */
+ switch ( eth_slow->header.subtype ) {
+ case ETH_SLOW_SUBTYPE_LACP:
+ return eth_slow_lacp_rx ( iobuf, netdev );
+ case ETH_SLOW_SUBTYPE_MARKER:
+ return eth_slow_marker_rx ( iobuf, netdev );
+ default:
+ DBGC ( netdev, "SLOW %p RX unknown subtype %02x\n",
+ netdev, eth_slow->header.subtype );
+ free_iob ( iobuf );
+ return -EINVAL;
+ }
+}
+
+/** Slow protocol */
+struct net_protocol eth_slow_protocol __net_protocol = {
+ .name = "Slow",
+ .net_proto = htons ( ETH_P_SLOW ),
+ .rx = eth_slow_rx,
+};
}
return netdev;
}
+
+/* Drag in Ethernet slow protocols */
+REQUIRE_OBJECT ( eth_slow );
projects / thirdparty / ipxe.git / commitdiff
