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numam-dpdk/drivers/net/bonding/eth_bond_8023ad_private.h
Weifeng Li 0bf68c660e net/bonding: change state machine to defaulted 
A dpdk bonding 802.3ad network as follows:
+----------+                        +-----------+
|dpdk lacp |bond1.1 <------> bond2.1|switch lacp|
|          |bond1.2 <------> bond2.2|           |
+----------+                        +-----------+
If a fiber optic go wrong about single pass during normal running like
this:
bond1.2 -----> bond2.2 ok
bond1.2 <--x-- bond2.2 error: bond1.2 receive no LACPDU Some packets
			      from switch to dpdk will choose bond2.2
			      and lost.

DPDK lacp state machine will transits to the expired state if no LACPDU
is received before the current_while_timer expires. But if no LACPDU is
received before the current_while_timer expires again, DPDK lacp state
machine has no change. Bond2.2 can not change to inactive depend on the
received LACPDU.
According to IEEE 802.3ad, if no lacpdu is received before the
current_while_timer expires again, the state machine should transits
from expired to defaulted. Bond2.2 will change to inactive depend on the
LACPDU with defaulted state.

This patch adds a state machine change from expired to defaulted when no
lacpdu is received before the current_while_timer expires again
according to IEEE 802.3ad:
If no LACPDU is received before the current_while timer expires again,
the state machine transits to the DEFAULTED state. The record Default
function overwrites the current operational parameters for the Partner
with administratively configured values. This allows configuration of
aggregations and individual links when no protocol partner is present,
while still permitting an active partner to override default settings.
The update_Default_Selected function sets the Selected variable FALSE
if the Link Aggregation Group has changed. Since all operational
parameters are now set to locally administered values there can be no
disagreement as to the Link Aggregation Group, so the Matched variable
is set TRUE.

The relevant description is in the chapter 43.4.12 of the link below:
https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=850426

Signed-off-by: Weifeng Li <liweifeng96@126.com>
Acked-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
2020-07-21 13:54:54 +02:00

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#ifndef _ETH_BOND_8023AD_PRIVATE_H_
#define _ETH_BOND_8023AD_PRIVATE_H_
#include <stdint.h>
#include <rte_ether.h>
#include <rte_byteorder.h>
#include <rte_atomic.h>
#include <rte_flow.h>
#include "rte_eth_bond_8023ad.h"
#define BOND_MODE_8023AX_UPDATE_TIMEOUT_MS 100
/** Maximum number of packets to one slave queued in TX ring. */
#define BOND_MODE_8023AX_SLAVE_RX_PKTS 3
/** Maximum number of LACP packets from one slave queued in TX ring. */
#define BOND_MODE_8023AX_SLAVE_TX_PKTS 1
/**
* Timeouts deffinitions (5.4.4 in 802.1AX documentation).
*/
#define BOND_8023AD_FAST_PERIODIC_MS 900
#define BOND_8023AD_SLOW_PERIODIC_MS 29000
#define BOND_8023AD_SHORT_TIMEOUT_MS 3000
#define BOND_8023AD_LONG_TIMEOUT_MS 90000
#define BOND_8023AD_CHURN_DETECTION_TIMEOUT_MS 60000
#define BOND_8023AD_AGGREGATE_WAIT_TIMEOUT_MS 2000
#define BOND_8023AD_TX_MACHINE_PERIOD_MS 500
#define BOND_8023AD_RX_MARKER_PERIOD_MS 2000
/**
* Interval of showing warning message from state machines. All messages will
* be held (and gathered together) to prevent flooding.
* This is no parto of 802.1AX standard.
*/
#define BOND_8023AD_WARNINGS_PERIOD_MS 1000
/**
* State machine flags
*/
#define SM_FLAGS_BEGIN 0x0001
#define SM_FLAGS_LACP_ENABLED 0x0002
#define SM_FLAGS_ACTOR_CHURN 0x0004
#define SM_FLAGS_PARTNER_CHURN 0x0008
#define SM_FLAGS_MOVED 0x0100
#define SM_FLAGS_PARTNER_SHORT_TIMEOUT 0x0200
#define SM_FLAGS_NTT 0x0400
#define SM_FLAGS_EXPIRED 0x0800
#define BOND_LINK_FULL_DUPLEX_KEY 0x01
#define BOND_LINK_SPEED_KEY_10M 0x02
#define BOND_LINK_SPEED_KEY_100M 0x04
#define BOND_LINK_SPEED_KEY_1000M 0x08
#define BOND_LINK_SPEED_KEY_10G 0x10
#define BOND_LINK_SPEED_KEY_20G 0x11
#define BOND_LINK_SPEED_KEY_40G 0x12
#define WRN_RX_MARKER_TO_FAST 0x01
#define WRN_UNKNOWN_SLOW_TYPE 0x02
#define WRN_UNKNOWN_MARKER_TYPE 0x04
#define WRN_NOT_LACP_CAPABLE 0x08
#define WRN_RX_QUEUE_FULL 0x10
#define WRN_TX_QUEUE_FULL 0x20
#define CHECK_FLAGS(_variable, _f) ((_variable) & (_f))
#define SET_FLAGS(_variable, _f) ((_variable) |= (_f))
#define CLEAR_FLAGS(_variable, _f) ((_variable) &= ~(_f))
#define SM_FLAG(_p, _f) (!!CHECK_FLAGS((_p)->sm_flags, SM_FLAGS_ ## _f))
#define SM_FLAG_SET(_p, _f) SET_FLAGS((_p)->sm_flags, SM_FLAGS_ ## _f)
#define SM_FLAG_CLR(_p, _f) CLEAR_FLAGS((_p)->sm_flags, SM_FLAGS_ ## _f)
#define ACTOR_STATE(_p, _f) (!!CHECK_FLAGS((_p)->actor_state, STATE_ ## _f))
#define ACTOR_STATE_SET(_p, _f) SET_FLAGS((_p)->actor_state, STATE_ ## _f)
#define ACTOR_STATE_CLR(_p, _f) CLEAR_FLAGS((_p)->actor_state, STATE_ ## _f)
#define PARTNER_STATE(_p, _f) (!!CHECK_FLAGS((_p)->partner_state, STATE_ ## _f))
#define PARTNER_STATE_SET(_p, _f) SET_FLAGS((_p)->partner_state, STATE_ ## _f)
#define PARTNER_STATE_CLR(_p, _f) CLEAR_FLAGS((_p)->partner_state, STATE_ ## _f)
/** Variables associated with each port (5.4.7 in 802.1AX documentation). */
struct port {
/**
* The operational values of the Actor's state parameters. Bitmask
* of port states.
*/
uint8_t actor_state;
/** The operational Actor's port parameters */
struct port_params actor;
/**
* The operational value of the Actor's view of the current values of
* the Partner's state parameters. The Actor sets this variable either
* to the value received from the Partner in an LACPDU, or to the value
* of Partner_Admin_Port_State. Bitmask of port states.
*/
uint8_t partner_state;
/** The operational Partner's port parameters */
struct port_params partner;
/** Partner administrative parameter values */
struct port_params partner_admin;
/* Additional port parameters not listed in documentation */
/** State machine flags */
uint16_t sm_flags;
enum rte_bond_8023ad_selection selected;
/** Indicates if either allmulti or promisc has been enforced on the
* slave so that we can receive lacp packets
*/
#define BOND_8023AD_FORCED_ALLMULTI (1 << 0)
#define BOND_8023AD_FORCED_PROMISC (1 << 1)
uint8_t forced_rx_flags;
uint64_t current_while_timer;
uint64_t periodic_timer;
uint64_t wait_while_timer;
uint64_t tx_machine_timer;
uint64_t tx_marker_timer;
/* Agregator parameters */
/** Used aggregator port ID */
uint16_t aggregator_port_id;
/** Memory pool used to allocate rings */
struct rte_mempool *mbuf_pool;
/** Ring of LACP packets from RX burst function */
struct rte_ring *rx_ring;
/** Ring of slow protocol packets (LACP and MARKERS) to TX burst function */
struct rte_ring *tx_ring;
/** Timer which is also used as mutex. If is 0 (not running) RX marker
* packet might be responded. Otherwise shall be dropped. It is zeroed in
* mode 4 callback function after expire. */
volatile uint64_t rx_marker_timer;
uint64_t warning_timer;
volatile uint16_t warnings_to_show;
/** Memory pool used to allocate slow queues */
struct rte_mempool *slow_pool;
};
struct mode8023ad_private {
uint64_t fast_periodic_timeout;
uint64_t slow_periodic_timeout;
uint64_t short_timeout;
uint64_t long_timeout;
uint64_t aggregate_wait_timeout;
uint64_t tx_period_timeout;
uint64_t rx_marker_timeout;
uint64_t update_timeout_us;
rte_eth_bond_8023ad_ext_slowrx_fn slowrx_cb;
uint8_t external_sm;
struct rte_ether_addr mac_addr;
struct rte_eth_link slave_link;
/***< slave link properties */
/**
* Configuration of dedicated hardware queues for control plane
* traffic
*/
struct {
uint8_t enabled;
struct rte_flow *flow[RTE_MAX_ETHPORTS];
uint16_t rx_qid;
uint16_t tx_qid;
} dedicated_queues;
enum rte_bond_8023ad_agg_selection agg_selection;
};
/**
* @internal
* The pool of *port* structures. The size of the pool
* is configured at compile-time in the <rte_eth_bond_8023ad.c> file.
*/
extern struct port bond_mode_8023ad_ports[];
/* Forward declaration */
struct bond_dev_private;
/**
* @internal
*
* Set mode 4 configuration of bonded interface.
*
* @pre Bonded interface must be stopped.
*
* @param dev Bonded interface
* @param conf new configuration. If NULL set default configuration.
*/
void
bond_mode_8023ad_setup(struct rte_eth_dev *dev,
struct rte_eth_bond_8023ad_conf *conf);
/**
* @internal
*
* Enables 802.1AX mode and all active slaves on bonded interface.
*
* @param dev Bonded interface
* @return
* 0 on success, negative value otherwise.
*/
int
bond_mode_8023ad_enable(struct rte_eth_dev *dev);
/**
* @internal
*
* Disables 802.1AX mode of the bonded interface and slaves.
*
* @param dev Bonded interface
* @return
* 0 on success, negative value otherwise.
*/
int bond_mode_8023ad_disable(struct rte_eth_dev *dev);
/**
* @internal
*
* Starts 802.3AX state machines management logic.
* @param dev Bonded interface
* @return
* 0 if machines was started, 1 if machines was already running,
* negative value otherwise.
*/
int
bond_mode_8023ad_start(struct rte_eth_dev *dev);
/**
* @internal
*
* Stops 802.3AX state machines management logic.
* @param dev Bonded interface
* @return
* 0 if this call stopped state machines, -ENOENT if alarm was not set.
*/
void
bond_mode_8023ad_stop(struct rte_eth_dev *dev);
/**
* @internal
*
* Passes given slow packet to state machines management logic.
* @param internals Bonded device private data.
* @param slave_id Slave port id.
* @param slot_pkt Slow packet.
*/
void
bond_mode_8023ad_handle_slow_pkt(struct bond_dev_private *internals,
uint16_t slave_id, struct rte_mbuf *pkt);
/**
* @internal
*
* Appends given slave used slave
*
* @param dev Bonded interface.
* @param port_id Slave port ID to be added
*
* @return
* 0 on success, negative value otherwise.
*/
void
bond_mode_8023ad_activate_slave(struct rte_eth_dev *dev, uint16_t port_id);
/**
* @internal
*
* Denitializes and removes given slave from 802.1AX mode.
*
* @param dev Bonded interface.
* @param slave_num Position of slave in active_slaves array
*
* @return
* 0 on success, negative value otherwise.
*/
int
bond_mode_8023ad_deactivate_slave(struct rte_eth_dev *dev, uint16_t slave_pos);
/**
* Updates state when MAC was changed on bonded device or one of its slaves.
* @param bond_dev Bonded device
*/
void
bond_mode_8023ad_mac_address_update(struct rte_eth_dev *bond_dev);
int
bond_ethdev_8023ad_flow_verify(struct rte_eth_dev *bond_dev,
uint16_t slave_port);
int
bond_ethdev_8023ad_flow_set(struct rte_eth_dev *bond_dev, uint16_t slave_port);
int
bond_8023ad_slow_pkt_hw_filter_supported(uint16_t port_id);
#endif /* _ETH_BOND_8023AD_H_ */
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