#include "bonding.h"
#include "bond_3ad.h"
-// General definitions
+/* General definitions */
#define AD_SHORT_TIMEOUT 1
#define AD_LONG_TIMEOUT 0
#define AD_STANDBY 0x2
#define AD_MAX_TX_IN_SECOND 3
#define AD_COLLECTOR_MAX_DELAY 0
-// Timer definitions(43.4.4 in the 802.3ad standard)
+/* Timer definitions (43.4.4 in the 802.3ad standard) */
#define AD_FAST_PERIODIC_TIME 1
#define AD_SLOW_PERIODIC_TIME 30
#define AD_SHORT_TIMEOUT_TIME (3*AD_FAST_PERIODIC_TIME)
#define AD_CHURN_DETECTION_TIME 60
#define AD_AGGREGATE_WAIT_TIME 2
-// Port state definitions(43.4.2.2 in the 802.3ad standard)
+/* Port state definitions (43.4.2.2 in the 802.3ad standard) */
#define AD_STATE_LACP_ACTIVITY 0x1
#define AD_STATE_LACP_TIMEOUT 0x2
#define AD_STATE_AGGREGATION 0x4
#define AD_STATE_DEFAULTED 0x40
#define AD_STATE_EXPIRED 0x80
-// Port Variables definitions used by the State Machines(43.4.7 in the 802.3ad standard)
+/* Port Variables definitions used by the State Machines (43.4.7 in the
+ * 802.3ad standard)
+ */
#define AD_PORT_BEGIN 0x1
#define AD_PORT_LACP_ENABLED 0x2
#define AD_PORT_ACTOR_CHURN 0x4
#define AD_PORT_SELECTED 0x100
#define AD_PORT_MOVED 0x200
-// Port Key definitions
-// key is determined according to the link speed, duplex and
-// user key(which is yet not supported)
-// ------------------------------------------------------------
-// Port key : | User key | Speed |Duplex|
-// ------------------------------------------------------------
-// 16 6 1 0
+/* Port Key definitions
+ * key is determined according to the link speed, duplex and
+ * user key (which is yet not supported)
+ * --------------------------------------------------------------
+ * Port key : | User key | Speed | Duplex |
+ * --------------------------------------------------------------
+ * 16 6 1 0
+ */
#define AD_DUPLEX_KEY_BITS 0x1
#define AD_SPEED_KEY_BITS 0x3E
#define AD_USER_KEY_BITS 0xFFC0
-//dalloun
#define AD_LINK_SPEED_BITMASK_1MBPS 0x1
#define AD_LINK_SPEED_BITMASK_10MBPS 0x2
#define AD_LINK_SPEED_BITMASK_100MBPS 0x4
#define AD_LINK_SPEED_BITMASK_1000MBPS 0x8
#define AD_LINK_SPEED_BITMASK_10000MBPS 0x10
-//endalloun
-// compare MAC addresses
-#define MAC_ADDRESS_COMPARE(A, B) memcmp(A, B, ETH_ALEN)
+/* compare MAC addresses */
+#define MAC_ADDRESS_EQUAL(A, B) \
+ ether_addr_equal_64bits((const u8 *)A, (const u8 *)B)
static struct mac_addr null_mac_addr = { { 0, 0, 0, 0, 0, 0 } };
static u16 ad_ticks_per_sec;
static const u8 lacpdu_mcast_addr[ETH_ALEN] = MULTICAST_LACPDU_ADDR;
-// ================= main 802.3ad protocol functions ==================
+/* ================= main 802.3ad protocol functions ================== */
static int ad_lacpdu_send(struct port *port);
static int ad_marker_send(struct port *port, struct bond_marker *marker);
static void ad_mux_machine(struct port *port);
static void ad_initialize_port(struct port *port, int lacp_fast);
static void ad_enable_collecting_distributing(struct port *port);
static void ad_disable_collecting_distributing(struct port *port);
-static void ad_marker_info_received(struct bond_marker *marker_info, struct port *port);
-static void ad_marker_response_received(struct bond_marker *marker, struct port *port);
+static void ad_marker_info_received(struct bond_marker *marker_info,
+ struct port *port);
+static void ad_marker_response_received(struct bond_marker *marker,
+ struct port *port);
-/////////////////////////////////////////////////////////////////////////////////
-// ================= api to bonding and kernel code ==================
-/////////////////////////////////////////////////////////////////////////////////
+/* ================= api to bonding and kernel code ================== */
/**
* __get_bond_by_port - get the port's bonding struct
*
* Return the aggregator of the first slave in @bond, or %NULL if it can't be
* found.
+ * The caller must hold RCU or RTNL lock.
*/
static inline struct aggregator *__get_first_agg(struct port *port)
{
struct bonding *bond = __get_bond_by_port(port);
struct slave *first_slave;
+ struct aggregator *agg;
- // If there's no bond for this port, or bond has no slaves
+ /* If there's no bond for this port, or bond has no slaves */
if (bond == NULL)
return NULL;
- first_slave = bond_first_slave(bond);
- return first_slave ? &(SLAVE_AD_INFO(first_slave).aggregator) : NULL;
+ rcu_read_lock();
+ first_slave = bond_first_slave_rcu(bond);
+ agg = first_slave ? &(SLAVE_AD_INFO(first_slave).aggregator) : NULL;
+ rcu_read_unlock();
+
+ return agg;
}
-/*
- * __agg_has_partner
+/**
+ * __agg_has_partner - see if we have a partner
+ * @agg: the agregator we're looking at
*
* Return nonzero if aggregator has a partner (denoted by a non-zero ether
- * address for the partner). Return 0 if not.
+ * address for the partner). Return 0 if not.
*/
static inline int __agg_has_partner(struct aggregator *agg)
{
/**
* __disable_port - disable the port's slave
* @port: the port we're looking at
- *
*/
static inline void __disable_port(struct port *port)
{
- bond_set_slave_inactive_flags(port->slave);
+ bond_set_slave_inactive_flags(port->slave, BOND_SLAVE_NOTIFY_LATER);
}
/**
* __enable_port - enable the port's slave, if it's up
* @port: the port we're looking at
- *
*/
static inline void __enable_port(struct port *port)
{
struct slave *slave = port->slave;
if ((slave->link == BOND_LINK_UP) && IS_UP(slave->dev))
- bond_set_slave_active_flags(slave);
+ bond_set_slave_active_flags(slave, BOND_SLAVE_NOTIFY_LATER);
}
/**
* __port_is_enabled - check if the port's slave is in active state
* @port: the port we're looking at
- *
*/
static inline int __port_is_enabled(struct port *port)
{
/**
* __check_agg_selection_timer - check if the selection timer has expired
* @port: the port we're looking at
- *
*/
static inline int __check_agg_selection_timer(struct port *port)
{
/**
* __get_state_machine_lock - lock the port's state machines
* @port: the port we're looking at
- *
*/
static inline void __get_state_machine_lock(struct port *port)
{
/**
* __release_state_machine_lock - unlock the port's state machines
* @port: the port we're looking at
- *
*/
static inline void __release_state_machine_lock(struct port *port)
{
struct slave *slave = port->slave;
u16 speed;
- /* this if covers only a special case: when the configuration starts with
- * link down, it sets the speed to 0.
- * This is done in spite of the fact that the e100 driver reports 0 to be
- * compatible with MVT in the future.*/
+ /* this if covers only a special case: when the configuration starts
+ * with link down, it sets the speed to 0.
+ * This is done in spite of the fact that the e100 driver reports 0
+ * to be compatible with MVT in the future.
+ */
if (slave->link != BOND_LINK_UP)
speed = 0;
else {
break;
default:
- speed = 0; // unknown speed value from ethtool. shouldn't happen
+ /* unknown speed value from ethtool. shouldn't happen */
+ speed = 0;
break;
}
}
u8 retval;
- // handling a special case: when the configuration starts with
- // link down, it sets the duplex to 0.
+ /* handling a special case: when the configuration starts with
+ * link down, it sets the duplex to 0.
+ */
if (slave->link != BOND_LINK_UP)
retval = 0x0;
else {
/**
* __initialize_port_locks - initialize a port's STATE machine spinlock
* @port: the slave of the port we're looking at
- *
*/
static inline void __initialize_port_locks(struct slave *slave)
{
- // make sure it isn't called twice
+ /* make sure it isn't called twice */
spin_lock_init(&(SLAVE_AD_INFO(slave).state_machine_lock));
}
-//conversions
+/* Conversions */
/**
* __ad_timer_to_ticks - convert a given timer type to AD module ticks
*
* If @timer_type is %current_while_timer, @par indicates long/short timer.
* If @timer_type is %periodic_timer, @par is one of %FAST_PERIODIC_TIME,
- * %SLOW_PERIODIC_TIME.
+ * %SLOW_PERIODIC_TIME.
*/
static u16 __ad_timer_to_ticks(u16 timer_type, u16 par)
{
u16 retval = 0; /* to silence the compiler */
switch (timer_type) {
- case AD_CURRENT_WHILE_TIMER: // for rx machine usage
+ case AD_CURRENT_WHILE_TIMER: /* for rx machine usage */
if (par)
- retval = (AD_SHORT_TIMEOUT_TIME*ad_ticks_per_sec); // short timeout
+ retval = (AD_SHORT_TIMEOUT_TIME*ad_ticks_per_sec);
else
- retval = (AD_LONG_TIMEOUT_TIME*ad_ticks_per_sec); // long timeout
+ retval = (AD_LONG_TIMEOUT_TIME*ad_ticks_per_sec);
break;
- case AD_ACTOR_CHURN_TIMER: // for local churn machine
+ case AD_ACTOR_CHURN_TIMER: /* for local churn machine */
retval = (AD_CHURN_DETECTION_TIME*ad_ticks_per_sec);
break;
- case AD_PERIODIC_TIMER: // for periodic machine
- retval = (par*ad_ticks_per_sec); // long timeout
+ case AD_PERIODIC_TIMER: /* for periodic machine */
+ retval = (par*ad_ticks_per_sec); /* long timeout */
break;
- case AD_PARTNER_CHURN_TIMER: // for remote churn machine
+ case AD_PARTNER_CHURN_TIMER: /* for remote churn machine */
retval = (AD_CHURN_DETECTION_TIME*ad_ticks_per_sec);
break;
- case AD_WAIT_WHILE_TIMER: // for selection machine
+ case AD_WAIT_WHILE_TIMER: /* for selection machine */
retval = (AD_AGGREGATE_WAIT_TIME*ad_ticks_per_sec);
break;
}
+
return retval;
}
-/////////////////////////////////////////////////////////////////////////////////
-// ================= ad_rx_machine helper functions ==================
-/////////////////////////////////////////////////////////////////////////////////
+/* ================= ad_rx_machine helper functions ================== */
/**
* __choose_matched - update a port's matched variable from a received lacpdu
*/
static void __choose_matched(struct lacpdu *lacpdu, struct port *port)
{
- // check if all parameters are alike
+ /* check if all parameters are alike
+ * or this is individual link(aggregation == FALSE)
+ * then update the state machine Matched variable.
+ */
if (((ntohs(lacpdu->partner_port) == port->actor_port_number) &&
(ntohs(lacpdu->partner_port_priority) == port->actor_port_priority) &&
- !MAC_ADDRESS_COMPARE(&(lacpdu->partner_system), &(port->actor_system)) &&
+ MAC_ADDRESS_EQUAL(&(lacpdu->partner_system), &(port->actor_system)) &&
(ntohs(lacpdu->partner_system_priority) == port->actor_system_priority) &&
(ntohs(lacpdu->partner_key) == port->actor_oper_port_key) &&
((lacpdu->partner_state & AD_STATE_AGGREGATION) == (port->actor_oper_port_state & AD_STATE_AGGREGATION))) ||
- // or this is individual link(aggregation == FALSE)
((lacpdu->actor_state & AD_STATE_AGGREGATION) == 0)
) {
- // update the state machine Matched variable
port->sm_vars |= AD_PORT_MATCHED;
} else {
port->sm_vars &= ~AD_PORT_MATCHED;
struct port_params *partner = &port->partner_oper;
__choose_matched(lacpdu, port);
- // record the new parameter values for the partner operational
+ /* record the new parameter values for the partner
+ * operational
+ */
partner->port_number = ntohs(lacpdu->actor_port);
partner->port_priority = ntohs(lacpdu->actor_port_priority);
partner->system = lacpdu->actor_system;
partner->key = ntohs(lacpdu->actor_key);
partner->port_state = lacpdu->actor_state;
- // set actor_oper_port_state.defaulted to FALSE
+ /* set actor_oper_port_state.defaulted to FALSE */
port->actor_oper_port_state &= ~AD_STATE_DEFAULTED;
- // set the partner sync. to on if the partner is sync. and the port is matched
+ /* set the partner sync. to on if the partner is sync,
+ * and the port is matched
+ */
if ((port->sm_vars & AD_PORT_MATCHED)
&& (lacpdu->actor_state & AD_STATE_SYNCHRONIZATION))
partner->port_state |= AD_STATE_SYNCHRONIZATION;
static void __record_default(struct port *port)
{
if (port) {
- // record the partner admin parameters
+ /* record the partner admin parameters */
memcpy(&port->partner_oper, &port->partner_admin,
sizeof(struct port_params));
- // set actor_oper_port_state.defaulted to true
+ /* set actor_oper_port_state.defaulted to true */
port->actor_oper_port_state |= AD_STATE_DEFAULTED;
}
}
if (lacpdu && port) {
const struct port_params *partner = &port->partner_oper;
- // check if any parameter is different
+ /* check if any parameter is different then
+ * update the state machine selected variable.
+ */
if (ntohs(lacpdu->actor_port) != partner->port_number ||
ntohs(lacpdu->actor_port_priority) != partner->port_priority ||
- MAC_ADDRESS_COMPARE(&lacpdu->actor_system, &partner->system) ||
+ !MAC_ADDRESS_EQUAL(&lacpdu->actor_system, &partner->system) ||
ntohs(lacpdu->actor_system_priority) != partner->system_priority ||
ntohs(lacpdu->actor_key) != partner->key ||
(lacpdu->actor_state & AD_STATE_AGGREGATION) != (partner->port_state & AD_STATE_AGGREGATION)) {
- // update the state machine Selected variable
port->sm_vars &= ~AD_PORT_SELECTED;
}
}
const struct port_params *admin = &port->partner_admin;
const struct port_params *oper = &port->partner_oper;
- // check if any parameter is different
+ /* check if any parameter is different then
+ * update the state machine selected variable.
+ */
if (admin->port_number != oper->port_number ||
admin->port_priority != oper->port_priority ||
- MAC_ADDRESS_COMPARE(&admin->system, &oper->system) ||
+ !MAC_ADDRESS_EQUAL(&admin->system, &oper->system) ||
admin->system_priority != oper->system_priority ||
admin->key != oper->key ||
(admin->port_state & AD_STATE_AGGREGATION)
!= (oper->port_state & AD_STATE_AGGREGATION)) {
- // update the state machine Selected variable
port->sm_vars &= ~AD_PORT_SELECTED;
}
}
*/
static void __update_ntt(struct lacpdu *lacpdu, struct port *port)
{
- // validate lacpdu and port
+ /* validate lacpdu and port */
if (lacpdu && port) {
- // check if any parameter is different
+ /* check if any parameter is different then
+ * update the port->ntt.
+ */
if ((ntohs(lacpdu->partner_port) != port->actor_port_number) ||
(ntohs(lacpdu->partner_port_priority) != port->actor_port_priority) ||
- MAC_ADDRESS_COMPARE(&(lacpdu->partner_system), &(port->actor_system)) ||
+ !MAC_ADDRESS_EQUAL(&(lacpdu->partner_system), &(port->actor_system)) ||
(ntohs(lacpdu->partner_system_priority) != port->actor_system_priority) ||
(ntohs(lacpdu->partner_key) != port->actor_oper_port_key) ||
((lacpdu->partner_state & AD_STATE_LACP_ACTIVITY) != (port->actor_oper_port_state & AD_STATE_LACP_ACTIVITY)) ||
((lacpdu->partner_state & AD_STATE_SYNCHRONIZATION) != (port->actor_oper_port_state & AD_STATE_SYNCHRONIZATION)) ||
((lacpdu->partner_state & AD_STATE_AGGREGATION) != (port->actor_oper_port_state & AD_STATE_AGGREGATION))
) {
-
port->ntt = true;
}
}
}
-/**
- * __attach_bond_to_agg
- * @port: the port we're looking at
- *
- * Handle the attaching of the port's control parser/multiplexer and the
- * aggregator. This function does nothing since the parser/multiplexer of the
- * receive and the parser/multiplexer of the aggregator are already combined.
- */
-static void __attach_bond_to_agg(struct port *port)
-{
- port = NULL; /* just to satisfy the compiler */
- // This function does nothing since the parser/multiplexer of the receive
- // and the parser/multiplexer of the aggregator are already combined
-}
-
-/**
- * __detach_bond_from_agg
- * @port: the port we're looking at
- *
- * Handle the detaching of the port's control parser/multiplexer from the
- * aggregator. This function does nothing since the parser/multiplexer of the
- * receive and the parser/multiplexer of the aggregator are already combined.
- */
-static void __detach_bond_from_agg(struct port *port)
-{
- port = NULL; /* just to satisfy the compiler */
- // This function does nothing since the parser/multiplexer of the receive
- // and the parser/multiplexer of the aggregator are already combined
-}
-
/**
* __agg_ports_are_ready - check if all ports in an aggregator are ready
* @aggregator: the aggregator we're looking at
int retval = 1;
if (aggregator) {
- // scan all ports in this aggregator to verfy if they are all ready
+ /* scan all ports in this aggregator to verfy if they are
+ * all ready.
+ */
for (port = aggregator->lag_ports;
port;
port = port->next_port_in_aggregator) {
bandwidth = aggregator->num_of_ports * 10000;
break;
default:
- bandwidth = 0; /*to silence the compiler ....*/
+ bandwidth = 0; /* to silence the compiler */
}
}
return bandwidth;
* __get_active_agg - get the current active aggregator
* @aggregator: the aggregator we're looking at
*
+ * Caller must hold RCU lock.
*/
static struct aggregator *__get_active_agg(struct aggregator *aggregator)
{
struct list_head *iter;
struct slave *slave;
- bond_for_each_slave(bond, slave, iter)
+ bond_for_each_slave_rcu(bond, slave, iter)
if (SLAVE_AD_INFO(slave).aggregator.is_active)
return &(SLAVE_AD_INFO(slave).aggregator);
/**
* __update_lacpdu_from_port - update a port's lacpdu fields
* @port: the port we're looking at
- *
*/
static inline void __update_lacpdu_from_port(struct port *port)
{
struct lacpdu *lacpdu = &port->lacpdu;
const struct port_params *partner = &port->partner_oper;
- /* update current actual Actor parameters */
- /* lacpdu->subtype initialized
+ /* update current actual Actor parameters
+ * lacpdu->subtype initialized
* lacpdu->version_number initialized
* lacpdu->tlv_type_actor_info initialized
* lacpdu->actor_information_length initialized
*/
}
-//////////////////////////////////////////////////////////////////////////////////////
-// ================= main 802.3ad protocol code ======================================
-//////////////////////////////////////////////////////////////////////////////////////
+/* ================= main 802.3ad protocol code ========================= */
/**
* ad_lacpdu_send - send out a lacpdu packet on a given port
memcpy(lacpdu_header->hdr.h_dest, lacpdu_mcast_addr, ETH_ALEN);
/* Note: source address is set to be the member's PERMANENT address,
- because we use it to identify loopback lacpdus in receive. */
+ * because we use it to identify loopback lacpdus in receive.
+ */
memcpy(lacpdu_header->hdr.h_source, slave->perm_hwaddr, ETH_ALEN);
lacpdu_header->hdr.h_proto = PKT_TYPE_LACPDU;
- lacpdu_header->lacpdu = port->lacpdu; // struct copy
+ lacpdu_header->lacpdu = port->lacpdu;
dev_queue_xmit(skb);
memcpy(marker_header->hdr.h_dest, lacpdu_mcast_addr, ETH_ALEN);
/* Note: source address is set to be the member's PERMANENT address,
- because we use it to identify loopback MARKERs in receive. */
+ * because we use it to identify loopback MARKERs in receive.
+ */
memcpy(marker_header->hdr.h_source, slave->perm_hwaddr, ETH_ALEN);
marker_header->hdr.h_proto = PKT_TYPE_LACPDU;
- marker_header->marker = *marker; // struct copy
+ marker_header->marker = *marker;
dev_queue_xmit(skb);
/**
* ad_mux_machine - handle a port's mux state machine
* @port: the port we're looking at
- *
*/
static void ad_mux_machine(struct port *port)
{
mux_states_t last_state;
- // keep current State Machine state to compare later if it was changed
+ /* keep current State Machine state to compare later if it was
+ * changed
+ */
last_state = port->sm_mux_state;
if (port->sm_vars & AD_PORT_BEGIN) {
- port->sm_mux_state = AD_MUX_DETACHED; // next state
+ port->sm_mux_state = AD_MUX_DETACHED;
} else {
switch (port->sm_mux_state) {
case AD_MUX_DETACHED:
if ((port->sm_vars & AD_PORT_SELECTED)
|| (port->sm_vars & AD_PORT_STANDBY))
/* if SELECTED or STANDBY */
- port->sm_mux_state = AD_MUX_WAITING; // next state
+ port->sm_mux_state = AD_MUX_WAITING;
break;
case AD_MUX_WAITING:
- // if SELECTED == FALSE return to DETACH state
- if (!(port->sm_vars & AD_PORT_SELECTED)) { // if UNSELECTED
+ /* if SELECTED == FALSE return to DETACH state */
+ if (!(port->sm_vars & AD_PORT_SELECTED)) {
port->sm_vars &= ~AD_PORT_READY_N;
- // in order to withhold the Selection Logic to check all ports READY_N value
- // every callback cycle to update ready variable, we check READY_N and update READY here
+ /* in order to withhold the Selection Logic to
+ * check all ports READY_N value every callback
+ * cycle to update ready variable, we check
+ * READY_N and update READY here
+ */
__set_agg_ports_ready(port->aggregator, __agg_ports_are_ready(port->aggregator));
- port->sm_mux_state = AD_MUX_DETACHED; // next state
+ port->sm_mux_state = AD_MUX_DETACHED;
break;
}
- // check if the wait_while_timer expired
+ /* check if the wait_while_timer expired */
if (port->sm_mux_timer_counter
&& !(--port->sm_mux_timer_counter))
port->sm_vars |= AD_PORT_READY_N;
- // in order to withhold the selection logic to check all ports READY_N value
- // every callback cycle to update ready variable, we check READY_N and update READY here
+ /* in order to withhold the selection logic to check
+ * all ports READY_N value every callback cycle to
+ * update ready variable, we check READY_N and update
+ * READY here
+ */
__set_agg_ports_ready(port->aggregator, __agg_ports_are_ready(port->aggregator));
- // if the wait_while_timer expired, and the port is in READY state, move to ATTACHED state
+ /* if the wait_while_timer expired, and the port is
+ * in READY state, move to ATTACHED state
+ */
if ((port->sm_vars & AD_PORT_READY)
&& !port->sm_mux_timer_counter)
- port->sm_mux_state = AD_MUX_ATTACHED; // next state
+ port->sm_mux_state = AD_MUX_ATTACHED;
break;
case AD_MUX_ATTACHED:
- // check also if agg_select_timer expired(so the edable port will take place only after this timer)
- if ((port->sm_vars & AD_PORT_SELECTED) && (port->partner_oper.port_state & AD_STATE_SYNCHRONIZATION) && !__check_agg_selection_timer(port)) {
- port->sm_mux_state = AD_MUX_COLLECTING_DISTRIBUTING;// next state
- } else if (!(port->sm_vars & AD_PORT_SELECTED) || (port->sm_vars & AD_PORT_STANDBY)) { // if UNSELECTED or STANDBY
+ /* check also if agg_select_timer expired (so the
+ * edable port will take place only after this timer)
+ */
+ if ((port->sm_vars & AD_PORT_SELECTED) &&
+ (port->partner_oper.port_state & AD_STATE_SYNCHRONIZATION) &&
+ !__check_agg_selection_timer(port)) {
+ port->sm_mux_state = AD_MUX_COLLECTING_DISTRIBUTING;
+ } else if (!(port->sm_vars & AD_PORT_SELECTED) ||
+ (port->sm_vars & AD_PORT_STANDBY)) {
+ /* if UNSELECTED or STANDBY */
port->sm_vars &= ~AD_PORT_READY_N;
- // in order to withhold the selection logic to check all ports READY_N value
- // every callback cycle to update ready variable, we check READY_N and update READY here
+ /* in order to withhold the selection logic to
+ * check all ports READY_N value every callback
+ * cycle to update ready variable, we check
+ * READY_N and update READY here
+ */
__set_agg_ports_ready(port->aggregator, __agg_ports_are_ready(port->aggregator));
- port->sm_mux_state = AD_MUX_DETACHED;// next state
+ port->sm_mux_state = AD_MUX_DETACHED;
}
break;
case AD_MUX_COLLECTING_DISTRIBUTING:
- if (!(port->sm_vars & AD_PORT_SELECTED) || (port->sm_vars & AD_PORT_STANDBY) ||
- !(port->partner_oper.port_state & AD_STATE_SYNCHRONIZATION)
- ) {
- port->sm_mux_state = AD_MUX_ATTACHED;// next state
-
+ if (!(port->sm_vars & AD_PORT_SELECTED) ||
+ (port->sm_vars & AD_PORT_STANDBY) ||
+ !(port->partner_oper.port_state & AD_STATE_SYNCHRONIZATION)) {
+ port->sm_mux_state = AD_MUX_ATTACHED;
} else {
- // if port state hasn't changed make
- // sure that a collecting distributing
- // port in an active aggregator is enabled
+ /* if port state hasn't changed make
+ * sure that a collecting distributing
+ * port in an active aggregator is enabled
+ */
if (port->aggregator &&
port->aggregator->is_active &&
!__port_is_enabled(port)) {
}
}
break;
- default: //to silence the compiler
+ default:
break;
}
}
- // check if the state machine was changed
+ /* check if the state machine was changed */
if (port->sm_mux_state != last_state) {
pr_debug("Mux Machine: Port=%d, Last State=%d, Curr State=%d\n",
port->actor_port_number, last_state,
port->sm_mux_state);
switch (port->sm_mux_state) {
case AD_MUX_DETACHED:
- __detach_bond_from_agg(port);
port->actor_oper_port_state &= ~AD_STATE_SYNCHRONIZATION;
ad_disable_collecting_distributing(port);
port->actor_oper_port_state &= ~AD_STATE_COLLECTING;
port->sm_mux_timer_counter = __ad_timer_to_ticks(AD_WAIT_WHILE_TIMER, 0);
break;
case AD_MUX_ATTACHED:
- __attach_bond_to_agg(port);
port->actor_oper_port_state |= AD_STATE_SYNCHRONIZATION;
port->actor_oper_port_state &= ~AD_STATE_COLLECTING;
port->actor_oper_port_state &= ~AD_STATE_DISTRIBUTING;
ad_enable_collecting_distributing(port);
port->ntt = true;
break;
- default: //to silence the compiler
+ default:
break;
}
}
{
rx_states_t last_state;
- // keep current State Machine state to compare later if it was changed
+ /* keep current State Machine state to compare later if it was
+ * changed
+ */
last_state = port->sm_rx_state;
- // check if state machine should change state
- // first, check if port was reinitialized
+ /* check if state machine should change state */
+
+ /* first, check if port was reinitialized */
if (port->sm_vars & AD_PORT_BEGIN)
- /* next state */
port->sm_rx_state = AD_RX_INITIALIZE;
- // check if port is not enabled
+ /* check if port is not enabled */
else if (!(port->sm_vars & AD_PORT_BEGIN)
&& !port->is_enabled && !(port->sm_vars & AD_PORT_MOVED))
- /* next state */
port->sm_rx_state = AD_RX_PORT_DISABLED;
- // check if new lacpdu arrived
- else if (lacpdu && ((port->sm_rx_state == AD_RX_EXPIRED) || (port->sm_rx_state == AD_RX_DEFAULTED) || (port->sm_rx_state == AD_RX_CURRENT))) {
- port->sm_rx_timer_counter = 0; // zero timer
+ /* check if new lacpdu arrived */
+ else if (lacpdu && ((port->sm_rx_state == AD_RX_EXPIRED) ||
+ (port->sm_rx_state == AD_RX_DEFAULTED) ||
+ (port->sm_rx_state == AD_RX_CURRENT))) {
+ port->sm_rx_timer_counter = 0;
port->sm_rx_state = AD_RX_CURRENT;
} else {
- // if timer is on, and if it is expired
- if (port->sm_rx_timer_counter && !(--port->sm_rx_timer_counter)) {
+ /* if timer is on, and if it is expired */
+ if (port->sm_rx_timer_counter &&
+ !(--port->sm_rx_timer_counter)) {
switch (port->sm_rx_state) {
case AD_RX_EXPIRED:
- port->sm_rx_state = AD_RX_DEFAULTED; // next state
+ port->sm_rx_state = AD_RX_DEFAULTED;
break;
case AD_RX_CURRENT:
- port->sm_rx_state = AD_RX_EXPIRED; // next state
+ port->sm_rx_state = AD_RX_EXPIRED;
break;
- default: //to silence the compiler
+ default:
break;
}
} else {
- // if no lacpdu arrived and no timer is on
+ /* if no lacpdu arrived and no timer is on */
switch (port->sm_rx_state) {
case AD_RX_PORT_DISABLED:
if (port->sm_vars & AD_PORT_MOVED)
- port->sm_rx_state = AD_RX_INITIALIZE; // next state
+ port->sm_rx_state = AD_RX_INITIALIZE;
else if (port->is_enabled
&& (port->sm_vars
& AD_PORT_LACP_ENABLED))
- port->sm_rx_state = AD_RX_EXPIRED; // next state
+ port->sm_rx_state = AD_RX_EXPIRED;
else if (port->is_enabled
&& ((port->sm_vars
& AD_PORT_LACP_ENABLED) == 0))
- port->sm_rx_state = AD_RX_LACP_DISABLED; // next state
+ port->sm_rx_state = AD_RX_LACP_DISABLED;
break;
- default: //to silence the compiler
+ default:
break;
}
}
}
- // check if the State machine was changed or new lacpdu arrived
+ /* check if the State machine was changed or new lacpdu arrived */
if ((port->sm_rx_state != last_state) || (lacpdu)) {
pr_debug("Rx Machine: Port=%d, Last State=%d, Curr State=%d\n",
port->actor_port_number, last_state,
__record_default(port);
port->actor_oper_port_state &= ~AD_STATE_EXPIRED;
port->sm_vars &= ~AD_PORT_MOVED;
- port->sm_rx_state = AD_RX_PORT_DISABLED; // next state
-
- /*- Fall Through -*/
+ port->sm_rx_state = AD_RX_PORT_DISABLED;
+ /* Fall Through */
case AD_RX_PORT_DISABLED:
port->sm_vars &= ~AD_PORT_MATCHED;
break;
port->actor_oper_port_state &= ~AD_STATE_EXPIRED;
break;
case AD_RX_EXPIRED:
- //Reset of the Synchronization flag. (Standard 43.4.12)
- //This reset cause to disable this port in the COLLECTING_DISTRIBUTING state of the
- //mux machine in case of EXPIRED even if LINK_DOWN didn't arrive for the port.
+ /* Reset of the Synchronization flag (Standard 43.4.12)
+ * This reset cause to disable this port in the
+ * COLLECTING_DISTRIBUTING state of the mux machine in
+ * case of EXPIRED even if LINK_DOWN didn't arrive for
+ * the port.
+ */
port->partner_oper.port_state &= ~AD_STATE_SYNCHRONIZATION;
port->sm_vars &= ~AD_PORT_MATCHED;
- port->partner_oper.port_state |=
- AD_STATE_LACP_ACTIVITY;
+ port->partner_oper.port_state |= AD_STATE_LACP_ACTIVITY;
port->sm_rx_timer_counter = __ad_timer_to_ticks(AD_CURRENT_WHILE_TIMER, (u16)(AD_SHORT_TIMEOUT));
port->actor_oper_port_state |= AD_STATE_EXPIRED;
break;
port->actor_oper_port_state &= ~AD_STATE_EXPIRED;
break;
case AD_RX_CURRENT:
- // detect loopback situation
- if (!MAC_ADDRESS_COMPARE(&(lacpdu->actor_system), &(port->actor_system))) {
- // INFO_RECEIVED_LOOPBACK_FRAMES
- pr_err("%s: An illegal loopback occurred on adapter (%s).\n"
- "Check the configuration to verify that all adapters are connected to 802.3ad compliant switch ports\n",
- port->slave->bond->dev->name, port->slave->dev->name);
+ /* detect loopback situation */
+ if (MAC_ADDRESS_EQUAL(&(lacpdu->actor_system),
+ &(port->actor_system))) {
+ pr_err("%s: An illegal loopback occurred on adapter (%s).\nCheck the configuration to verify that all adapters are connected to 802.3ad compliant switch ports\n",
+ port->slave->bond->dev->name,
+ port->slave->dev->name);
return;
}
__update_selected(lacpdu, port);
port->sm_rx_timer_counter = __ad_timer_to_ticks(AD_CURRENT_WHILE_TIMER, (u16)(port->actor_oper_port_state & AD_STATE_LACP_TIMEOUT));
port->actor_oper_port_state &= ~AD_STATE_EXPIRED;
break;
- default: //to silence the compiler
+ default:
break;
}
}
/**
* ad_tx_machine - handle a port's tx state machine
* @port: the port we're looking at
- *
*/
static void ad_tx_machine(struct port *port)
{
- // check if tx timer expired, to verify that we do not send more than 3 packets per second
+ /* check if tx timer expired, to verify that we do not send more than
+ * 3 packets per second
+ */
if (port->sm_tx_timer_counter && !(--port->sm_tx_timer_counter)) {
- // check if there is something to send
+ /* check if there is something to send */
if (port->ntt && (port->sm_vars & AD_PORT_LACP_ENABLED)) {
__update_lacpdu_from_port(port);
pr_debug("Sent LACPDU on port %d\n",
port->actor_port_number);
- /* mark ntt as false, so it will not be sent again until
- demanded */
+ /* mark ntt as false, so it will not be sent
+ * again until demanded
+ */
port->ntt = false;
}
}
- // restart tx timer(to verify that we will not exceed AD_MAX_TX_IN_SECOND
- port->sm_tx_timer_counter =
- ad_ticks_per_sec/AD_MAX_TX_IN_SECOND;
+ /* restart tx timer(to verify that we will not exceed
+ * AD_MAX_TX_IN_SECOND
+ */
+ port->sm_tx_timer_counter = ad_ticks_per_sec/AD_MAX_TX_IN_SECOND;
}
}
{
periodic_states_t last_state;
- // keep current state machine state to compare later if it was changed
+ /* keep current state machine state to compare later if it was changed */
last_state = port->sm_periodic_state;
- // check if port was reinitialized
+ /* check if port was reinitialized */
if (((port->sm_vars & AD_PORT_BEGIN) || !(port->sm_vars & AD_PORT_LACP_ENABLED) || !port->is_enabled) ||
(!(port->actor_oper_port_state & AD_STATE_LACP_ACTIVITY) && !(port->partner_oper.port_state & AD_STATE_LACP_ACTIVITY))
) {
- port->sm_periodic_state = AD_NO_PERIODIC; // next state
+ port->sm_periodic_state = AD_NO_PERIODIC;
}
- // check if state machine should change state
+ /* check if state machine should change state */
else if (port->sm_periodic_timer_counter) {
- // check if periodic state machine expired
+ /* check if periodic state machine expired */
if (!(--port->sm_periodic_timer_counter)) {
- // if expired then do tx
- port->sm_periodic_state = AD_PERIODIC_TX; // next state
+ /* if expired then do tx */
+ port->sm_periodic_state = AD_PERIODIC_TX;
} else {
- // If not expired, check if there is some new timeout parameter from the partner state
+ /* If not expired, check if there is some new timeout
+ * parameter from the partner state
+ */
switch (port->sm_periodic_state) {
case AD_FAST_PERIODIC:
if (!(port->partner_oper.port_state
& AD_STATE_LACP_TIMEOUT))
- port->sm_periodic_state = AD_SLOW_PERIODIC; // next state
+ port->sm_periodic_state = AD_SLOW_PERIODIC;
break;
case AD_SLOW_PERIODIC:
if ((port->partner_oper.port_state & AD_STATE_LACP_TIMEOUT)) {
- // stop current timer
port->sm_periodic_timer_counter = 0;
- port->sm_periodic_state = AD_PERIODIC_TX; // next state
+ port->sm_periodic_state = AD_PERIODIC_TX;
}
break;
- default: //to silence the compiler
+ default:
break;
}
}
} else {
switch (port->sm_periodic_state) {
case AD_NO_PERIODIC:
- port->sm_periodic_state = AD_FAST_PERIODIC; // next state
+ port->sm_periodic_state = AD_FAST_PERIODIC;
break;
case AD_PERIODIC_TX:
- if (!(port->partner_oper.port_state
- & AD_STATE_LACP_TIMEOUT))
- port->sm_periodic_state = AD_SLOW_PERIODIC; // next state
+ if (!(port->partner_oper.port_state &
+ AD_STATE_LACP_TIMEOUT))
+ port->sm_periodic_state = AD_SLOW_PERIODIC;
else
- port->sm_periodic_state = AD_FAST_PERIODIC; // next state
+ port->sm_periodic_state = AD_FAST_PERIODIC;
break;
- default: //to silence the compiler
+ default:
break;
}
}
- // check if the state machine was changed
+ /* check if the state machine was changed */
if (port->sm_periodic_state != last_state) {
pr_debug("Periodic Machine: Port=%d, Last State=%d, Curr State=%d\n",
port->actor_port_number, last_state,
port->sm_periodic_state);
switch (port->sm_periodic_state) {
case AD_NO_PERIODIC:
- port->sm_periodic_timer_counter = 0; // zero timer
+ port->sm_periodic_timer_counter = 0;
break;
case AD_FAST_PERIODIC:
- port->sm_periodic_timer_counter = __ad_timer_to_ticks(AD_PERIODIC_TIMER, (u16)(AD_FAST_PERIODIC_TIME))-1; // decrement 1 tick we lost in the PERIODIC_TX cycle
+ /* decrement 1 tick we lost in the PERIODIC_TX cycle */
+ port->sm_periodic_timer_counter = __ad_timer_to_ticks(AD_PERIODIC_TIMER, (u16)(AD_FAST_PERIODIC_TIME))-1;
break;
case AD_SLOW_PERIODIC:
- port->sm_periodic_timer_counter = __ad_timer_to_ticks(AD_PERIODIC_TIMER, (u16)(AD_SLOW_PERIODIC_TIME))-1; // decrement 1 tick we lost in the PERIODIC_TX cycle
+ /* decrement 1 tick we lost in the PERIODIC_TX cycle */
+ port->sm_periodic_timer_counter = __ad_timer_to_ticks(AD_PERIODIC_TIMER, (u16)(AD_SLOW_PERIODIC_TIME))-1;
break;
case AD_PERIODIC_TX:
port->ntt = true;
break;
- default: //to silence the compiler
+ default:
break;
}
}
struct slave *slave;
int found = 0;
- // if the port is already Selected, do nothing
+ /* if the port is already Selected, do nothing */
if (port->sm_vars & AD_PORT_SELECTED)
return;
bond = __get_bond_by_port(port);
- // if the port is connected to other aggregator, detach it
+ /* if the port is connected to other aggregator, detach it */
if (port->aggregator) {
- // detach the port from its former aggregator
+ /* detach the port from its former aggregator */
temp_aggregator = port->aggregator;
for (curr_port = temp_aggregator->lag_ports; curr_port;
last_port = curr_port,
- curr_port = curr_port->next_port_in_aggregator) {
+ curr_port = curr_port->next_port_in_aggregator) {
if (curr_port == port) {
temp_aggregator->num_of_ports--;
- if (!last_port) {// if it is the first port attached to the aggregator
+ /* if it is the first port attached to the
+ * aggregator
+ */
+ if (!last_port) {
temp_aggregator->lag_ports =
port->next_port_in_aggregator;
- } else {// not the first port attached to the aggregator
+ } else {
+ /* not the first port attached to the
+ * aggregator
+ */
last_port->next_port_in_aggregator =
port->next_port_in_aggregator;
}
- // clear the port's relations to this aggregator
+ /* clear the port's relations to this
+ * aggregator
+ */
port->aggregator = NULL;
port->next_port_in_aggregator = NULL;
port->actor_port_aggregator_identifier = 0;
pr_debug("Port %d left LAG %d\n",
port->actor_port_number,
temp_aggregator->aggregator_identifier);
- // if the aggregator is empty, clear its parameters, and set it ready to be attached
+ /* if the aggregator is empty, clear its
+ * parameters, and set it ready to be attached
+ */
if (!temp_aggregator->lag_ports)
ad_clear_agg(temp_aggregator);
break;
}
}
- if (!curr_port) { // meaning: the port was related to an aggregator but was not on the aggregator port list
- pr_warning("%s: Warning: Port %d (on %s) was related to aggregator %d but was not on its port list\n",
- port->slave->bond->dev->name,
- port->actor_port_number,
- port->slave->dev->name,
- port->aggregator->aggregator_identifier);
+ if (!curr_port) {
+ /* meaning: the port was related to an aggregator
+ * but was not on the aggregator port list
+ */
+ pr_warn("%s: Warning: Port %d (on %s) was related to aggregator %d but was not on its port list\n",
+ port->slave->bond->dev->name,
+ port->actor_port_number,
+ port->slave->dev->name,
+ port->aggregator->aggregator_identifier);
}
}
- // search on all aggregators for a suitable aggregator for this port
+ /* search on all aggregators for a suitable aggregator for this port */
bond_for_each_slave(bond, slave, iter) {
aggregator = &(SLAVE_AD_INFO(slave).aggregator);
- // keep a free aggregator for later use(if needed)
+ /* keep a free aggregator for later use(if needed) */
if (!aggregator->lag_ports) {
if (!free_aggregator)
free_aggregator = aggregator;
continue;
}
- // check if current aggregator suits us
- if (((aggregator->actor_oper_aggregator_key == port->actor_oper_port_key) && // if all parameters match AND
- !MAC_ADDRESS_COMPARE(&(aggregator->partner_system), &(port->partner_oper.system)) &&
+ /* check if current aggregator suits us */
+ if (((aggregator->actor_oper_aggregator_key == port->actor_oper_port_key) && /* if all parameters match AND */
+ MAC_ADDRESS_EQUAL(&(aggregator->partner_system), &(port->partner_oper.system)) &&
(aggregator->partner_system_priority == port->partner_oper.system_priority) &&
(aggregator->partner_oper_aggregator_key == port->partner_oper.key)
) &&
- ((MAC_ADDRESS_COMPARE(&(port->partner_oper.system), &(null_mac_addr)) && // partner answers
- !aggregator->is_individual) // but is not individual OR
+ ((!MAC_ADDRESS_EQUAL(&(port->partner_oper.system), &(null_mac_addr)) && /* partner answers */
+ !aggregator->is_individual) /* but is not individual OR */
)
) {
- // attach to the founded aggregator
+ /* attach to the founded aggregator */
port->aggregator = aggregator;
port->actor_port_aggregator_identifier =
port->aggregator->aggregator_identifier;
port->actor_port_number,
port->aggregator->aggregator_identifier);
- // mark this port as selected
+ /* mark this port as selected */
port->sm_vars |= AD_PORT_SELECTED;
found = 1;
break;
}
}
- // the port couldn't find an aggregator - attach it to a new aggregator
+ /* the port couldn't find an aggregator - attach it to a new
+ * aggregator
+ */
if (!found) {
if (free_aggregator) {
- // assign port a new aggregator
+ /* assign port a new aggregator */
port->aggregator = free_aggregator;
port->actor_port_aggregator_identifier =
port->aggregator->aggregator_identifier;
- // update the new aggregator's parameters
- // if port was responsed from the end-user
+ /* update the new aggregator's parameters
+ * if port was responsed from the end-user
+ */
if (port->actor_oper_port_key & AD_DUPLEX_KEY_BITS)
/* if port is full duplex */
port->aggregator->is_individual = false;
port->aggregator->lag_ports = port;
port->aggregator->num_of_ports++;
- // mark this port as selected
+ /* mark this port as selected */
port->sm_vars |= AD_PORT_SELECTED;
pr_debug("Port %d joined LAG %d(new LAG)\n",
port->actor_port_number, port->slave->dev->name);
}
}
- // if all aggregator's ports are READY_N == TRUE, set ready=TRUE in all aggregator's ports
- // else set ready=FALSE in all aggregator's ports
- __set_agg_ports_ready(port->aggregator, __agg_ports_are_ready(port->aggregator));
+ /* if all aggregator's ports are READY_N == TRUE, set ready=TRUE
+ * in all aggregator's ports, else set ready=FALSE in all
+ * aggregator's ports
+ */
+ __set_agg_ports_ready(port->aggregator,
+ __agg_ports_are_ready(port->aggregator));
aggregator = __get_first_agg(port);
ad_agg_selection_logic(aggregator);
}
-/*
- * Decide if "agg" is a better choice for the new active aggregator that
+/* Decide if "agg" is a better choice for the new active aggregator that
* the current best, according to the ad_select policy.
*/
static struct aggregator *ad_agg_selection_test(struct aggregator *best,
struct aggregator *curr)
{
- /*
- * 0. If no best, select current.
+ /* 0. If no best, select current.
*
* 1. If the current agg is not individual, and the best is
* individual, select current.
break;
default:
- pr_warning("%s: Impossible agg select mode %d\n",
- curr->slave->bond->dev->name,
- __get_agg_selection_mode(curr->lag_ports));
+ pr_warn("%s: Impossible agg select mode %d\n",
+ curr->slave->bond->dev->name,
+ __get_agg_selection_mode(curr->lag_ports));
break;
}
static int agg_device_up(const struct aggregator *agg)
{
struct port *port = agg->lag_ports;
+
if (!port)
return 0;
- return (netif_running(port->slave->dev) &&
- netif_carrier_ok(port->slave->dev));
+
+ return netif_running(port->slave->dev) &&
+ netif_carrier_ok(port->slave->dev);
}
/**
struct slave *slave;
struct port *port;
+ rcu_read_lock();
origin = agg;
active = __get_active_agg(agg);
best = (active && agg_device_up(active)) ? active : NULL;
- bond_for_each_slave(bond, slave, iter) {
+ bond_for_each_slave_rcu(bond, slave, iter) {
agg = &(SLAVE_AD_INFO(slave).aggregator);
agg->is_active = 0;
if (best &&
__get_agg_selection_mode(best->lag_ports) == BOND_AD_STABLE) {
- /*
- * For the STABLE policy, don't replace the old active
+ /* For the STABLE policy, don't replace the old active
* aggregator if it's still active (it has an answering
* partner) or if both the best and active don't have an
* answering partner.
if (active && active->lag_ports &&
active->lag_ports->is_enabled &&
(__agg_has_partner(active) ||
- (!__agg_has_partner(active) && !__agg_has_partner(best)))) {
+ (!__agg_has_partner(active) &&
+ !__agg_has_partner(best)))) {
if (!(!active->actor_oper_aggregator_key &&
best->actor_oper_aggregator_key)) {
best = NULL;
active->is_active = 1;
}
- // if there is new best aggregator, activate it
+ /* if there is new best aggregator, activate it */
if (best) {
pr_debug("best Agg=%d; P=%d; a k=%d; p k=%d; Ind=%d; Act=%d\n",
best->aggregator_identifier, best->num_of_ports,
best->lag_ports, best->slave,
best->slave ? best->slave->dev->name : "NULL");
- bond_for_each_slave(bond, slave, iter) {
+ bond_for_each_slave_rcu(bond, slave, iter) {
agg = &(SLAVE_AD_INFO(slave).aggregator);
pr_debug("Agg=%d; P=%d; a k=%d; p k=%d; Ind=%d; Act=%d\n",
agg->is_individual, agg->is_active);
}
- // check if any partner replys
+ /* check if any partner replys */
if (best->is_individual) {
- pr_warning("%s: Warning: No 802.3ad response from the link partner for any adapters in the bond\n",
- best->slave ? best->slave->bond->dev->name : "NULL");
+ pr_warn("%s: Warning: No 802.3ad response from the link partner for any adapters in the bond\n",
+ best->slave ?
+ best->slave->bond->dev->name : "NULL");
}
best->is_active = 1;
best->partner_oper_aggregator_key,
best->is_individual, best->is_active);
- // disable the ports that were related to the former active_aggregator
+ /* disable the ports that were related to the former
+ * active_aggregator
+ */
if (active) {
for (port = active->lag_ports; port;
port = port->next_port_in_aggregator) {
}
}
- /*
- * if the selected aggregator is of join individuals
+ /* if the selected aggregator is of join individuals
* (partner_system is NULL), enable their ports
*/
active = __get_active_agg(origin);
}
}
+ rcu_read_unlock();
+
bond_3ad_set_carrier(bond);
}
/**
* ad_clear_agg - clear a given aggregator's parameters
* @aggregator: the aggregator we're looking at
- *
*/
static void ad_clear_agg(struct aggregator *aggregator)
{
/**
* ad_initialize_agg - initialize a given aggregator's parameters
* @aggregator: the aggregator we're looking at
- *
*/
static void ad_initialize_agg(struct aggregator *aggregator)
{
* ad_initialize_port - initialize a given port's parameters
* @aggregator: the aggregator we're looking at
* @lacp_fast: boolean. whether fast periodic should be used
- *
*/
static void ad_initialize_port(struct port *port, int lacp_fast)
{
port->ntt = false;
port->actor_admin_port_key = 1;
port->actor_oper_port_key = 1;
- port->actor_admin_port_state = AD_STATE_AGGREGATION | AD_STATE_LACP_ACTIVITY;
- port->actor_oper_port_state = AD_STATE_AGGREGATION | AD_STATE_LACP_ACTIVITY;
+ port->actor_admin_port_state = AD_STATE_AGGREGATION |
+ AD_STATE_LACP_ACTIVITY;
+ port->actor_oper_port_state = AD_STATE_AGGREGATION |
+ AD_STATE_LACP_ACTIVITY;
if (lacp_fast)
port->actor_oper_port_state |= AD_STATE_LACP_TIMEOUT;
memcpy(&port->partner_oper, &tmpl, sizeof(tmpl));
port->is_enabled = true;
- // ****** private parameters ******
+ /* private parameters */
port->sm_vars = 0x3;
port->sm_rx_state = 0;
port->sm_rx_timer_counter = 0;
/**
* ad_disable_collecting_distributing - disable a port's transmit/receive
* @port: the port we're looking at
- *
*/
static void ad_disable_collecting_distributing(struct port *port)
{
- if (port->aggregator && MAC_ADDRESS_COMPARE(&(port->aggregator->partner_system), &(null_mac_addr))) {
+ if (port->aggregator &&
+ !MAC_ADDRESS_EQUAL(&(port->aggregator->partner_system),
+ &(null_mac_addr))) {
pr_debug("Disabling port %d(LAG %d)\n",
port->actor_port_number,
port->aggregator->aggregator_identifier);
}
}
-#if 0
-/**
- * ad_marker_info_send - send a marker information frame
- * @port: the port we're looking at
- *
- * This function does nothing since we decided not to implement send and handle
- * response for marker PDU's, in this stage, but only to respond to marker
- * information.
- */
-static void ad_marker_info_send(struct port *port)
-{
- struct bond_marker marker;
- u16 index;
-
- // fill the marker PDU with the appropriate values
- marker.subtype = 0x02;
- marker.version_number = 0x01;
- marker.tlv_type = AD_MARKER_INFORMATION_SUBTYPE;
- marker.marker_length = 0x16;
- // convert requester_port to Big Endian
- marker.requester_port = (((port->actor_port_number & 0xFF) << 8) |((u16)(port->actor_port_number & 0xFF00) >> 8));
- marker.requester_system = port->actor_system;
- // convert requester_port(u32) to Big Endian
- marker.requester_transaction_id =
- (((++port->transaction_id & 0xFF) << 24)
- | ((port->transaction_id & 0xFF00) << 8)
- | ((port->transaction_id & 0xFF0000) >> 8)
- | ((port->transaction_id & 0xFF000000) >> 24));
- marker.pad = 0;
- marker.tlv_type_terminator = 0x00;
- marker.terminator_length = 0x00;
- for (index = 0; index < 90; index++)
- marker.reserved_90[index] = 0;
-
- // send the marker information
- if (ad_marker_send(port, &marker) >= 0) {
- pr_debug("Sent Marker Information on port %d\n",
- port->actor_port_number);
- }
-}
-#endif
-
/**
* ad_marker_info_received - handle receive of a Marker information frame
* @marker_info: Marker info received
* @port: the port we're looking at
- *
*/
static void ad_marker_info_received(struct bond_marker *marker_info,
struct port *port)
{
struct bond_marker marker;
- // copy the received marker data to the response marker
- //marker = *marker_info;
+ /* copy the received marker data to the response marker */
memcpy(&marker, marker_info, sizeof(struct bond_marker));
- // change the marker subtype to marker response
+ /* change the marker subtype to marker response */
marker.tlv_type = AD_MARKER_RESPONSE_SUBTYPE;
- // send the marker response
+ /* send the marker response */
if (ad_marker_send(port, &marker) >= 0) {
pr_debug("Sent Marker Response on port %d\n",
port->actor_port_number);
* information.
*/
static void ad_marker_response_received(struct bond_marker *marker,
- struct port *port)
+ struct port *port)
{
- marker = NULL; /* just to satisfy the compiler */
- port = NULL; /* just to satisfy the compiler */
- // DO NOTHING, SINCE WE DECIDED NOT TO IMPLEMENT THIS FEATURE FOR NOW
+ marker = NULL;
+ port = NULL;
+ /* DO NOTHING, SINCE WE DECIDED NOT TO IMPLEMENT THIS FEATURE FOR NOW */
}
-//////////////////////////////////////////////////////////////////////////////////////
-// ================= AD exported functions to the main bonding code ==================
-//////////////////////////////////////////////////////////////////////////////////////
+/* ========= AD exported functions to the main bonding code ========= */
-// Check aggregators status in team every T seconds
+/* Check aggregators status in team every T seconds */
#define AD_AGGREGATOR_SELECTION_TIMER 8
-/*
- * bond_3ad_initiate_agg_selection(struct bonding *bond)
+/**
+ * bond_3ad_initiate_agg_selection - initate aggregator selection
+ * @bond: bonding struct
*
* Set the aggregation selection timer, to initiate an agg selection in
* the very near future. Called during first initialization, and during
BOND_AD_INFO(bond).agg_select_timer = timeout;
}
-static u16 aggregator_identifier;
-
/**
* bond_3ad_initialize - initialize a bond's 802.3ad parameters and structures
* @bond: bonding struct to work on
*/
void bond_3ad_initialize(struct bonding *bond, u16 tick_resolution)
{
- // check that the bond is not initialized yet
- if (MAC_ADDRESS_COMPARE(&(BOND_AD_INFO(bond).system.sys_mac_addr),
+ /* check that the bond is not initialized yet */
+ if (!MAC_ADDRESS_EQUAL(&(BOND_AD_INFO(bond).system.sys_mac_addr),
bond->dev->dev_addr)) {
- aggregator_identifier = 0;
+ BOND_AD_INFO(bond).aggregator_identifier = 0;
BOND_AD_INFO(bond).system.sys_priority = 0xFFFF;
BOND_AD_INFO(bond).system.sys_mac_addr = *((struct mac_addr *)bond->dev->dev_addr);
- // initialize how many times this module is called in one second(should be about every 100ms)
+ /* initialize how many times this module is called in one
+ * second (should be about every 100ms)
+ */
ad_ticks_per_sec = tick_resolution;
bond_3ad_initiate_agg_selection(bond,
* Returns: 0 on success
* < 0 on error
*/
-int bond_3ad_bind_slave(struct slave *slave)
+void bond_3ad_bind_slave(struct slave *slave)
{
struct bonding *bond = bond_get_bond_by_slave(slave);
struct port *port;
struct aggregator *aggregator;
- if (bond == NULL) {
- pr_err("%s: The slave %s is not attached to its bond\n",
- slave->bond->dev->name, slave->dev->name);
- return -1;
- }
-
- //check that the slave has not been initialized yet.
+ /* check that the slave has not been initialized yet. */
if (SLAVE_AD_INFO(slave).port.slave != slave) {
- // port initialization
+ /* port initialization */
port = &(SLAVE_AD_INFO(slave).port);
ad_initialize_port(port, bond->params.lacp_fast);
__initialize_port_locks(slave);
port->slave = slave;
port->actor_port_number = SLAVE_AD_INFO(slave).id;
- // key is determined according to the link speed, duplex and user key(which is yet not supported)
- // ------------------------------------------------------------
- // Port key : | User key | Speed |Duplex|
- // ------------------------------------------------------------
- // 16 6 1 0
- port->actor_admin_port_key = 0; // initialize this parameter
+ /* key is determined according to the link speed, duplex and user key(which
+ * is yet not supported)
+ */
+ port->actor_admin_port_key = 0;
port->actor_admin_port_key |= __get_duplex(port);
port->actor_admin_port_key |= (__get_link_speed(port) << 1);
port->actor_oper_port_key = port->actor_admin_port_key;
- // if the port is not full duplex, then the port should be not lacp Enabled
+ /* if the port is not full duplex, then the port should be not
+ * lacp Enabled
+ */
if (!(port->actor_oper_port_key & AD_DUPLEX_KEY_BITS))
port->sm_vars &= ~AD_PORT_LACP_ENABLED;
- // actor system is the bond's system
+ /* actor system is the bond's system */
port->actor_system = BOND_AD_INFO(bond).system.sys_mac_addr;
- // tx timer(to verify that no more than MAX_TX_IN_SECOND lacpdu's are sent in one second)
+ /* tx timer(to verify that no more than MAX_TX_IN_SECOND
+ * lacpdu's are sent in one second)
+ */
port->sm_tx_timer_counter = ad_ticks_per_sec/AD_MAX_TX_IN_SECOND;
port->aggregator = NULL;
port->next_port_in_aggregator = NULL;
__disable_port(port);
- // aggregator initialization
+ /* aggregator initialization */
aggregator = &(SLAVE_AD_INFO(slave).aggregator);
ad_initialize_agg(aggregator);
aggregator->aggregator_mac_address = *((struct mac_addr *)bond->dev->dev_addr);
- aggregator->aggregator_identifier = (++aggregator_identifier);
+ aggregator->aggregator_identifier = ++BOND_AD_INFO(bond).aggregator_identifier;
aggregator->slave = slave;
aggregator->is_active = 0;
aggregator->num_of_ports = 0;
}
-
- return 0;
}
/**
struct slave *slave_iter;
struct list_head *iter;
- // find the aggregator related to this slave
aggregator = &(SLAVE_AD_INFO(slave).aggregator);
-
- // find the port related to this slave
port = &(SLAVE_AD_INFO(slave).port);
- // if slave is null, the whole port is not initialized
+ /* if slave is null, the whole port is not initialized */
if (!port->slave) {
- pr_warning("Warning: %s: Trying to unbind an uninitialized port on %s\n",
- slave->bond->dev->name, slave->dev->name);
+ pr_warn("Warning: %s: Trying to unbind an uninitialized port on %s\n",
+ slave->bond->dev->name, slave->dev->name);
return;
}
__update_lacpdu_from_port(port);
ad_lacpdu_send(port);
- // check if this aggregator is occupied
+ /* check if this aggregator is occupied */
if (aggregator->lag_ports) {
- // check if there are other ports related to this aggregator except
- // the port related to this slave(thats ensure us that there is a
- // reason to search for new aggregator, and that we will find one
- if ((aggregator->lag_ports != port) || (aggregator->lag_ports->next_port_in_aggregator)) {
- // find new aggregator for the related port(s)
+ /* check if there are other ports related to this aggregator
+ * except the port related to this slave(thats ensure us that
+ * there is a reason to search for new aggregator, and that we
+ * will find one
+ */
+ if ((aggregator->lag_ports != port) ||
+ (aggregator->lag_ports->next_port_in_aggregator)) {
+ /* find new aggregator for the related port(s) */
bond_for_each_slave(bond, slave_iter, iter) {
new_aggregator = &(SLAVE_AD_INFO(slave_iter).aggregator);
- // if the new aggregator is empty, or it is connected to our port only
- if (!new_aggregator->lag_ports
- || ((new_aggregator->lag_ports == port)
- && !new_aggregator->lag_ports->next_port_in_aggregator))
+ /* if the new aggregator is empty, or it is
+ * connected to our port only
+ */
+ if (!new_aggregator->lag_ports ||
+ ((new_aggregator->lag_ports == port) &&
+ !new_aggregator->lag_ports->next_port_in_aggregator))
break;
}
if (!slave_iter)
new_aggregator = NULL;
- // if new aggregator found, copy the aggregator's parameters
- // and connect the related lag_ports to the new aggregator
+
+ /* if new aggregator found, copy the aggregator's
+ * parameters and connect the related lag_ports to the
+ * new aggregator
+ */
if ((new_aggregator) && ((!new_aggregator->lag_ports) || ((new_aggregator->lag_ports == port) && !new_aggregator->lag_ports->next_port_in_aggregator))) {
pr_debug("Some port(s) related to LAG %d - replaceing with LAG %d\n",
aggregator->aggregator_identifier,
new_aggregator->aggregator_identifier);
- if ((new_aggregator->lag_ports == port) && new_aggregator->is_active) {
+ if ((new_aggregator->lag_ports == port) &&
+ new_aggregator->is_active) {
pr_info("%s: Removing an active aggregator\n",
aggregator->slave->bond->dev->name);
- // select new active aggregator
select_new_active_agg = 1;
}
new_aggregator->is_active = aggregator->is_active;
new_aggregator->num_of_ports = aggregator->num_of_ports;
- // update the information that is written on the ports about the aggregator
+ /* update the information that is written on
+ * the ports about the aggregator
+ */
for (temp_port = aggregator->lag_ports; temp_port;
temp_port = temp_port->next_port_in_aggregator) {
temp_port->aggregator = new_aggregator;
temp_port->actor_port_aggregator_identifier = new_aggregator->aggregator_identifier;
}
- // clear the aggregator
ad_clear_agg(aggregator);
if (select_new_active_agg)
ad_agg_selection_logic(__get_first_agg(port));
} else {
- pr_warning("%s: Warning: unbinding aggregator, and could not find a new aggregator for its ports\n",
- slave->bond->dev->name);
+ pr_warn("%s: Warning: unbinding aggregator, and could not find a new aggregator for its ports\n",
+ slave->bond->dev->name);
}
- } else { // in case that the only port related to this aggregator is the one we want to remove
+ } else {
+ /* in case that the only port related to this
+ * aggregator is the one we want to remove
+ */
select_new_active_agg = aggregator->is_active;
- // clear the aggregator
ad_clear_agg(aggregator);
if (select_new_active_agg) {
pr_info("%s: Removing an active aggregator\n",
slave->bond->dev->name);
- // select new active aggregator
+ /* select new active aggregator */
temp_aggregator = __get_first_agg(port);
if (temp_aggregator)
ad_agg_selection_logic(temp_aggregator);
}
pr_debug("Unbinding port %d\n", port->actor_port_number);
- // find the aggregator that this port is connected to
+
+ /* find the aggregator that this port is connected to */
bond_for_each_slave(bond, slave_iter, iter) {
temp_aggregator = &(SLAVE_AD_INFO(slave_iter).aggregator);
prev_port = NULL;
- // search the port in the aggregator's related ports
+ /* search the port in the aggregator's related ports */
for (temp_port = temp_aggregator->lag_ports; temp_port;
prev_port = temp_port,
- temp_port = temp_port->next_port_in_aggregator) {
- if (temp_port == port) { // the aggregator found - detach the port from this aggregator
+ temp_port = temp_port->next_port_in_aggregator) {
+ if (temp_port == port) {
+ /* the aggregator found - detach the port from
+ * this aggregator
+ */
if (prev_port)
prev_port->next_port_in_aggregator = temp_port->next_port_in_aggregator;
else
temp_aggregator->num_of_ports--;
if (temp_aggregator->num_of_ports == 0) {
select_new_active_agg = temp_aggregator->is_active;
- // clear the aggregator
ad_clear_agg(temp_aggregator);
if (select_new_active_agg) {
pr_info("%s: Removing an active aggregator\n",
slave->bond->dev->name);
- // select new active aggregator
+ /* select new active aggregator */
ad_agg_selection_logic(__get_first_agg(port));
}
}
struct list_head *iter;
struct slave *slave;
struct port *port;
+ bool should_notify_rtnl = BOND_SLAVE_NOTIFY_LATER;
read_lock(&bond->lock);
+ rcu_read_lock();
- //check if there are any slaves
+ /* check if there are any slaves */
if (!bond_has_slaves(bond))
goto re_arm;
- // check if agg_select_timer timer after initialize is timed out
- if (BOND_AD_INFO(bond).agg_select_timer && !(--BOND_AD_INFO(bond).agg_select_timer)) {
- slave = bond_first_slave(bond);
+ /* check if agg_select_timer timer after initialize is timed out */
+ if (BOND_AD_INFO(bond).agg_select_timer &&
+ !(--BOND_AD_INFO(bond).agg_select_timer)) {
+ slave = bond_first_slave_rcu(bond);
port = slave ? &(SLAVE_AD_INFO(slave).port) : NULL;
- // select the active aggregator for the bond
+ /* select the active aggregator for the bond */
if (port) {
if (!port->slave) {
- pr_warning("%s: Warning: bond's first port is uninitialized\n",
- bond->dev->name);
+ pr_warn("%s: Warning: bond's first port is uninitialized\n",
+ bond->dev->name);
goto re_arm;
}
bond_3ad_set_carrier(bond);
}
- // for each port run the state machines
- bond_for_each_slave(bond, slave, iter) {
+ /* for each port run the state machines */
+ bond_for_each_slave_rcu(bond, slave, iter) {
port = &(SLAVE_AD_INFO(slave).port);
if (!port->slave) {
- pr_warning("%s: Warning: Found an uninitialized port\n",
- bond->dev->name);
+ pr_warn("%s: Warning: Found an uninitialized port\n",
+ bond->dev->name);
goto re_arm;
}
ad_mux_machine(port);
ad_tx_machine(port);
- // turn off the BEGIN bit, since we already handled it
+ /* turn off the BEGIN bit, since we already handled it */
if (port->sm_vars & AD_PORT_BEGIN)
port->sm_vars &= ~AD_PORT_BEGIN;
}
re_arm:
- queue_delayed_work(bond->wq, &bond->ad_work, ad_delta_in_ticks);
-
+ bond_for_each_slave_rcu(bond, slave, iter) {
+ if (slave->should_notify) {
+ should_notify_rtnl = BOND_SLAVE_NOTIFY_NOW;
+ break;
+ }
+ }
+ rcu_read_unlock();
read_unlock(&bond->lock);
+
+ if (should_notify_rtnl && rtnl_trylock()) {
+ bond_for_each_slave(bond, slave, iter) {
+ if (slave->should_notify) {
+ rtmsg_ifinfo(RTM_NEWLINK, slave->dev, 0,
+ GFP_KERNEL);
+ slave->should_notify = 0;
+ }
+ }
+ rtnl_unlock();
+ }
+ queue_delayed_work(bond->wq, &bond->ad_work, ad_delta_in_ticks);
}
/**
* received frames (loopback). Since only the payload is given to this
* function, it check for loopback.
*/
-static int bond_3ad_rx_indication(struct lacpdu *lacpdu, struct slave *slave, u16 length)
+static int bond_3ad_rx_indication(struct lacpdu *lacpdu, struct slave *slave,
+ u16 length)
{
struct port *port;
int ret = RX_HANDLER_ANOTHER;
port = &(SLAVE_AD_INFO(slave).port);
if (!port->slave) {
- pr_warning("%s: Warning: port of slave %s is uninitialized\n",
- slave->dev->name, slave->bond->dev->name);
+ pr_warn("%s: Warning: port of slave %s is uninitialized\n",
+ slave->dev->name, slave->bond->dev->name);
return ret;
}
case AD_TYPE_MARKER:
ret = RX_HANDLER_CONSUMED;
- // No need to convert fields to Little Endian since we don't use the marker's fields.
+ /* No need to convert fields to Little Endian since we
+ * don't use the marker's fields.
+ */
switch (((struct bond_marker *)lacpdu)->tlv_type) {
case AD_MARKER_INFORMATION_SUBTYPE:
/* if slave is null, the whole port is not initialized */
if (!port->slave) {
- pr_warning("Warning: %s: speed changed for uninitialized port on %s\n",
- slave->bond->dev->name, slave->dev->name);
+ pr_warn("Warning: %s: speed changed for uninitialized port on %s\n",
+ slave->bond->dev->name, slave->dev->name);
return;
}
/* if slave is null, the whole port is not initialized */
if (!port->slave) {
- pr_warning("%s: Warning: duplex changed for uninitialized port on %s\n",
- slave->bond->dev->name, slave->dev->name);
+ pr_warn("%s: Warning: duplex changed for uninitialized port on %s\n",
+ slave->bond->dev->name, slave->dev->name);
return;
}
/* if slave is null, the whole port is not initialized */
if (!port->slave) {
- pr_warning("Warning: %s: link status changed for uninitialized port on %s\n",
- slave->bond->dev->name, slave->dev->name);
+ pr_warn("Warning: %s: link status changed for uninitialized port on %s\n",
+ slave->bond->dev->name, slave->dev->name);
return;
}
__release_state_machine_lock(port);
}
-/*
- * set link state for bonding master: if we have an active
- * aggregator, we're up, if not, we're down. Presumes that we cannot
- * have an active aggregator if there are no slaves with link up.
+/**
+ * bond_3ad_set_carrier - set link state for bonding master
+ * @bond - bonding structure
+ *
+ * if we have an active aggregator, we're up, if not, we're down.
+ * Presumes that we cannot have an active aggregator if there are
+ * no slaves with link up.
*
* This behavior complies with IEEE 802.3 section 43.3.9.
*
{
struct aggregator *active;
struct slave *first_slave;
+ int ret = 1;
- first_slave = bond_first_slave(bond);
- if (!first_slave)
- return 0;
+ rcu_read_lock();
+ first_slave = bond_first_slave_rcu(bond);
+ if (!first_slave) {
+ ret = 0;
+ goto out;
+ }
active = __get_active_agg(&(SLAVE_AD_INFO(first_slave).aggregator));
if (active) {
/* are enough slaves available to consider link up? */
if (active->num_of_ports < bond->params.min_links) {
if (netif_carrier_ok(bond->dev)) {
netif_carrier_off(bond->dev);
- return 1;
+ goto out;
}
} else if (!netif_carrier_ok(bond->dev)) {
netif_carrier_on(bond->dev);
- return 1;
+ goto out;
}
- return 0;
- }
-
- if (netif_carrier_ok(bond->dev)) {
+ } else if (netif_carrier_ok(bond->dev)) {
netif_carrier_off(bond->dev);
- return 1;
}
- return 0;
+out:
+ rcu_read_unlock();
+ return ret;
}
/**
ad_info->ports = aggregator->num_of_ports;
ad_info->actor_key = aggregator->actor_oper_aggregator_key;
ad_info->partner_key = aggregator->partner_oper_aggregator_key;
- memcpy(ad_info->partner_system, aggregator->partner_system.mac_addr_value, ETH_ALEN);
+ memcpy(ad_info->partner_system,
+ aggregator->partner_system.mac_addr_value, ETH_ALEN);
return 0;
}
struct list_head *iter;
int slaves_in_agg;
int slave_agg_no;
- int res = 1;
int agg_id;
if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {
pr_debug("%s: Error: __bond_3ad_get_active_agg_info failed\n",
dev->name);
- goto out;
+ goto err_free;
}
slaves_in_agg = ad_info.ports;
if (slaves_in_agg == 0) {
pr_debug("%s: Error: active aggregator is empty\n", dev->name);
- goto out;
+ goto err_free;
}
slave_agg_no = bond_xmit_hash(bond, skb, slaves_in_agg);
}
if (SLAVE_IS_OK(slave)) {
- res = bond_dev_queue_xmit(bond, skb, slave->dev);
+ bond_dev_queue_xmit(bond, skb, slave->dev);
goto out;
}
}
if (slave_agg_no >= 0) {
pr_err("%s: Error: Couldn't find a slave to tx on for aggregator ID %d\n",
dev->name, agg_id);
- goto out;
+ goto err_free;
}
/* we couldn't find any suitable slave after the agg_no, so use the
- * first suitable found, if found. */
+ * first suitable found, if found.
+ */
if (first_ok_slave)
- res = bond_dev_queue_xmit(bond, skb, first_ok_slave->dev);
+ bond_dev_queue_xmit(bond, skb, first_ok_slave->dev);
+ else
+ goto err_free;
out:
- if (res) {
- /* no suitable interface, frame not sent */
- kfree_skb(skb);
- }
-
return NETDEV_TX_OK;
+err_free:
+ /* no suitable interface, frame not sent */
+ kfree_skb(skb);
+ goto out;
}
int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond,
return ret;
}
-/*
+/**
+ * bond_3ad_update_lacp_rate - change the lacp rate
+ * @bond - bonding struct
+ *
* When modify lacp_rate parameter via sysfs,
* update actor_oper_port_state of each port.
*
projects / cascardo / linux.git / blobdiff