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34 #ifndef _RTE_ETH_BOND_H_
35 #define _RTE_ETH_BOND_H_
38 * @file rte_eth_bond.h
40 * RTE Link Bonding Ethernet Device
41 * Link Bonding for 1GbE and 10GbE ports to allow the aggregation of multiple
42 * (slave) NICs into a single logical interface. The bonded device processes
43 * these interfaces based on the mode of operation specified and supported.
44 * This implementation supports 4 modes of operation round robin, active backup
45 * balance and broadcast. Providing redundant links, fault tolerance and/or
46 * load balancing of network ports
53 #include <rte_ether.h>
55 /* Supported modes of operation of link bonding library */
57 #define BONDING_MODE_ROUND_ROBIN (0)
58 /**< Round Robin (Mode 0).
59 * In this mode all transmitted packets will be balanced equally across all
60 * active slaves of the bonded in a round robin fashion. */
61 #define BONDING_MODE_ACTIVE_BACKUP (1)
62 /**< Active Backup (Mode 1).
63 * In this mode all packets transmitted will be transmitted on the primary
64 * slave until such point as the primary slave is no longer available and then
65 * transmitted packets will be sent on the next available slaves. The primary
66 * slave can be defined by the user but defaults to the first active slave
67 * available if not specified. */
68 #define BONDING_MODE_BALANCE (2)
69 /**< Balance (Mode 2).
70 * In this mode all packets transmitted will be balanced across the available
71 * slaves using one of three available transmit policies - l2, l2+3 or l3+4.
72 * See BALANCE_XMIT_POLICY macros definitions for further details on transmit
74 #define BONDING_MODE_BROADCAST (3)
75 /**< Broadcast (Mode 3).
76 * In this mode all transmitted packets will be transmitted on all available
77 * active slaves of the bonded. */
78 #define BONDING_MODE_8023AD (4)
79 /**< 802.3AD (Mode 4).
81 * This mode provides auto negotiation/configuration
82 * of peers and well as link status changes monitoring using out of band
83 * LACP (link aggregation control protocol) messages. For further details of
84 * LACP specification see the IEEE 802.3ad/802.1AX standards. It is also
86 * https://www.kernel.org/doc/Documentation/networking/bonding.txt.
88 * Important Usage Notes:
89 * - for LACP mode to work the rx/tx burst functions must be invoked
90 * at least once every 100ms, otherwise the out-of-band LACP messages will not
91 * be handled with the expected latency and this may cause the link status to be
92 * incorrectly marked as down or failure to correctly negotiate with peers.
93 * - For optimal performance during initial handshaking the array of mbufs provided
94 * to rx_burst should be at least 2 times the slave count size.
97 #define BONDING_MODE_TLB (5)
98 /**< Adaptive TLB (Mode 5)
99 * This mode provides an adaptive transmit load balancing. It dynamically
100 * changes the transmitting slave, according to the computed load. Statistics
101 * are collected in 100ms intervals and scheduled every 10ms */
102 #define BONDING_MODE_ALB (6)
103 /**< Adaptive Load Balancing (Mode 6)
104 * This mode includes adaptive TLB and receive load balancing (RLB). In RLB the
105 * bonding driver intercepts ARP replies send by local system and overwrites its
106 * source MAC address, so that different peers send data to the server on
107 * different slave interfaces. When local system sends ARP request, it saves IP
108 * information from it. When ARP reply from that peer is received, its MAC is
109 * stored, one of slave MACs assigned and ARP reply send to that peer.
112 /* Balance Mode Transmit Policies */
113 #define BALANCE_XMIT_POLICY_LAYER2 (0)
114 /**< Layer 2 (Ethernet MAC) */
115 #define BALANCE_XMIT_POLICY_LAYER23 (1)
116 /**< Layer 2+3 (Ethernet MAC + IP Addresses) transmit load balancing */
117 #define BALANCE_XMIT_POLICY_LAYER34 (2)
118 /**< Layer 3+4 (IP Addresses + UDP Ports) transmit load balancing */
121 * Create a bonded rte_eth_dev device
123 * @param name Name of new link bonding device.
124 * @param mode Mode to initialize bonding device in.
125 * @param socket_id Socket Id on which to allocate eth_dev resources.
128 * Port Id of created rte_eth_dev on success, negative value otherwise
131 rte_eth_bond_create(const char *name, uint8_t mode, uint8_t socket_id);
134 * Free a bonded rte_eth_dev device
136 * @param name Name of the link bonding device.
139 * 0 on success, negative value otherwise
142 rte_eth_bond_free(const char *name);
145 * Add a rte_eth_dev device as a slave to the bonded device
147 * @param bonded_port_id Port ID of bonded device.
148 * @param slave_port_id Port ID of slave device.
151 * 0 on success, negative value otherwise
154 rte_eth_bond_slave_add(uint8_t bonded_port_id, uint8_t slave_port_id);
157 * Remove a slave rte_eth_dev device from the bonded device
159 * @param bonded_port_id Port ID of bonded device.
160 * @param slave_port_id Port ID of slave device.
163 * 0 on success, negative value otherwise
166 rte_eth_bond_slave_remove(uint8_t bonded_port_id, uint8_t slave_port_id);
169 * Set link bonding mode of bonded device
171 * @param bonded_port_id Port ID of bonded device.
172 * @param mode Bonding mode to set
175 * 0 on success, negative value otherwise
178 rte_eth_bond_mode_set(uint8_t bonded_port_id, uint8_t mode);
181 * Get link bonding mode of bonded device
183 * @param bonded_port_id Port ID of bonded device.
186 * link bonding mode on success, negative value otherwise
189 rte_eth_bond_mode_get(uint8_t bonded_port_id);
192 * Set slave rte_eth_dev as primary slave of bonded device
194 * @param bonded_port_id Port ID of bonded device.
195 * @param slave_port_id Port ID of slave device.
198 * 0 on success, negative value otherwise
201 rte_eth_bond_primary_set(uint8_t bonded_port_id, uint8_t slave_port_id);
204 * Get primary slave of bonded device
206 * @param bonded_port_id Port ID of bonded device.
209 * Port Id of primary slave on success, -1 on failure
212 rte_eth_bond_primary_get(uint8_t bonded_port_id);
215 * Populate an array with list of the slaves port id's of the bonded device
217 * @param bonded_port_id Port ID of bonded eth_dev to interrogate
218 * @param slaves Array to be populated with the current active slaves
219 * @param len Length of slaves array
222 * Number of slaves associated with bonded device on success,
223 * negative value otherwise
226 rte_eth_bond_slaves_get(uint8_t bonded_port_id, uint8_t slaves[], uint8_t len);
229 * Populate an array with list of the active slaves port id's of the bonded
232 * @param bonded_port_id Port ID of bonded eth_dev to interrogate
233 * @param slaves Array to be populated with the current active slaves
234 * @param len Length of slaves array
237 * Number of active slaves associated with bonded device on success,
238 * negative value otherwise
241 rte_eth_bond_active_slaves_get(uint8_t bonded_port_id, uint8_t slaves[],
245 * Set explicit MAC address to use on bonded device and it's slaves.
247 * @param bonded_port_id Port ID of bonded device.
248 * @param mac_addr MAC Address to use on bonded device overriding
249 * slaves MAC addresses
252 * 0 on success, negative value otherwise
255 rte_eth_bond_mac_address_set(uint8_t bonded_port_id,
256 struct ether_addr *mac_addr);
259 * Reset bonded device to use MAC from primary slave on bonded device and it's
262 * @param bonded_port_id Port ID of bonded device.
265 * 0 on success, negative value otherwise
268 rte_eth_bond_mac_address_reset(uint8_t bonded_port_id);
271 * Set the transmit policy for bonded device to use when it is operating in
272 * balance mode, this parameter is otherwise ignored in other modes of
275 * @param bonded_port_id Port ID of bonded device.
276 * @param policy Balance mode transmission policy.
279 * 0 on success, negative value otherwise.
282 rte_eth_bond_xmit_policy_set(uint8_t bonded_port_id, uint8_t policy);
285 * Get the transmit policy set on bonded device for balance mode operation
287 * @param bonded_port_id Port ID of bonded device.
290 * Balance transmit policy on success, negative value otherwise.
293 rte_eth_bond_xmit_policy_get(uint8_t bonded_port_id);
296 * Set the link monitoring frequency (in ms) for monitoring the link status of
299 * @param bonded_port_id Port ID of bonded device.
300 * @param internal_ms Monitoring interval in milliseconds
303 * 0 on success, negative value otherwise.
307 rte_eth_bond_link_monitoring_set(uint8_t bonded_port_id, uint32_t internal_ms);
310 * Get the current link monitoring frequency (in ms) for monitoring of the link
311 * status of slave devices
313 * @param bonded_port_id Port ID of bonded device.
316 * Monitoring interval on success, negative value otherwise.
319 rte_eth_bond_link_monitoring_get(uint8_t bonded_port_id);
323 * Set the period in milliseconds for delaying the disabling of a bonded link
324 * when the link down status has been detected
326 * @param bonded_port_id Port ID of bonded device.
327 * @param delay_ms Delay period in milliseconds.
330 * 0 on success, negative value otherwise.
333 rte_eth_bond_link_down_prop_delay_set(uint8_t bonded_port_id, uint32_t delay_ms);
336 * Get the period in milliseconds set for delaying the disabling of a bonded
337 * link when the link down status has been detected
339 * @param bonded_port_id Port ID of bonded device.
342 * Delay period on success, negative value otherwise.
345 rte_eth_bond_link_down_prop_delay_get(uint8_t bonded_port_id);
348 * Set the period in milliseconds for delaying the enabling of a bonded link
349 * when the link up status has been detected
351 * @param bonded_port_id Port ID of bonded device.
352 * @param delay_ms Delay period in milliseconds.
355 * 0 on success, negative value otherwise.
358 rte_eth_bond_link_up_prop_delay_set(uint8_t bonded_port_id, uint32_t delay_ms);
361 * Get the period in milliseconds set for delaying the enabling of a bonded
362 * link when the link up status has been detected
364 * @param bonded_port_id Port ID of bonded device.
367 * Delay period on success, negative value otherwise.
370 rte_eth_bond_link_up_prop_delay_get(uint8_t bonded_port_id);