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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 #ifdef RTE_MBUF_REFCNT
75 #define BONDING_MODE_BROADCAST (3)
76 /**< Broadcast (Mode 3).
77 * In this mode all transmitted packets will be transmitted on all available
78 * active slaves of the bonded. */
80 #define BONDING_MODE_8023AD (4)
81 /**< 802.3AD (Mode 4).
83 * This mode provides auto negotiation/configuration
84 * of peers and well as link status changes monitoring using out of band
85 * LACP (link aggregation control protocol) messages. For further details of
86 * LACP specification see the IEEE 802.3ad/802.1AX standards. It is also
88 * https://www.kernel.org/doc/Documentation/networking/bonding.txt.
90 * Important Usage Notes:
91 * - for LACP mode to work the rx/tx burst functions must be invoked
92 * at least once every 100ms, otherwise the out-of-band LACP messages will not
93 * be handled with the expected latency and this may cause the link status to be
94 * incorrectly marked as down or failure to correctly negotiate with peers.
95 * - For optimal performance during initial handshaking the array of mbufs provided
96 * to rx_burst should be at least 2 times the slave count size.
99 #define BONDING_MODE_TLB (5)
100 /**< Adaptive TLB (Mode 5)
101 * This mode provides an adaptive transmit load balancing. It dynamically
102 * changes the transmitting slave, according to the computed load. Statistics
103 * are collected in 100ms intervals and scheduled every 10ms */
104 #define BONDING_MODE_ALB (6)
105 /**< Adaptive Load Balancing (Mode 6)
106 * This mode includes adaptive TLB and receive load balancing (RLB). In RLB the
107 * bonding driver intercepts ARP replies send by local system and overwrites its
108 * source MAC address, so that different peers send data to the server on
109 * different slave interfaces. When local system sends ARP request, it saves IP
110 * information from it. When ARP reply from that peer is received, its MAC is
111 * stored, one of slave MACs assigned and ARP reply send to that peer.
114 /* Balance Mode Transmit Policies */
115 #define BALANCE_XMIT_POLICY_LAYER2 (0)
116 /**< Layer 2 (Ethernet MAC) */
117 #define BALANCE_XMIT_POLICY_LAYER23 (1)
118 /**< Layer 2+3 (Ethernet MAC + IP Addresses) transmit load balancing */
119 #define BALANCE_XMIT_POLICY_LAYER34 (2)
120 /**< Layer 3+4 (IP Addresses + UDP Ports) transmit load balancing */
123 * Create a bonded rte_eth_dev device
125 * @param name Name of new link bonding device.
126 * @param mode Mode to initialize bonding device in.
127 * @param socket_id Socket Id on which to allocate eth_dev resources.
130 * Port Id of created rte_eth_dev on success, negative value otherwise
133 rte_eth_bond_create(const char *name, uint8_t mode, uint8_t socket_id);
136 * Add a rte_eth_dev device as a slave to the bonded device
138 * @param bonded_port_id Port ID of bonded device.
139 * @param slave_port_id Port ID of slave device.
142 * 0 on success, negative value otherwise
145 rte_eth_bond_slave_add(uint8_t bonded_port_id, uint8_t slave_port_id);
148 * Remove a slave rte_eth_dev device from the bonded device
150 * @param bonded_port_id Port ID of bonded device.
151 * @param slave_port_id Port ID of slave device.
154 * 0 on success, negative value otherwise
157 rte_eth_bond_slave_remove(uint8_t bonded_port_id, uint8_t slave_port_id);
160 * Set link bonding mode of bonded device
162 * @param bonded_port_id Port ID of bonded device.
163 * @param mode Bonding mode to set
166 * 0 on success, negative value otherwise
169 rte_eth_bond_mode_set(uint8_t bonded_port_id, uint8_t mode);
172 * Get link bonding mode of bonded device
174 * @param bonded_port_id Port ID of bonded device.
177 * link bonding mode on success, negative value otherwise
180 rte_eth_bond_mode_get(uint8_t bonded_port_id);
183 * Set slave rte_eth_dev as primary slave of bonded device
185 * @param bonded_port_id Port ID of bonded device.
186 * @param slave_port_id Port ID of slave device.
189 * 0 on success, negative value otherwise
192 rte_eth_bond_primary_set(uint8_t bonded_port_id, uint8_t slave_port_id);
195 * Get primary slave of bonded device
197 * @param bonded_port_id Port ID of bonded device.
200 * Port Id of primary slave on success, -1 on failure
203 rte_eth_bond_primary_get(uint8_t bonded_port_id);
206 * Populate an array with list of the slaves port id's of the bonded device
208 * @param bonded_port_id Port ID of bonded eth_dev to interrogate
209 * @param slaves Array to be populated with the current active slaves
210 * @param len Length of slaves array
213 * Number of slaves associated with bonded device on success,
214 * negative value otherwise
217 rte_eth_bond_slaves_get(uint8_t bonded_port_id, uint8_t slaves[], uint8_t len);
220 * Populate an array with list of the active slaves port id's of the bonded
223 * @param bonded_port_id Port ID of bonded eth_dev to interrogate
224 * @param slaves Array to be populated with the current active slaves
225 * @param len Length of slaves array
228 * Number of active slaves associated with bonded device on success,
229 * negative value otherwise
232 rte_eth_bond_active_slaves_get(uint8_t bonded_port_id, uint8_t slaves[],
236 * Set explicit MAC address to use on bonded device and it's slaves.
238 * @param bonded_port_id Port ID of bonded device.
239 * @param mac_addr MAC Address to use on bonded device overriding
240 * slaves MAC addresses
243 * 0 on success, negative value otherwise
246 rte_eth_bond_mac_address_set(uint8_t bonded_port_id,
247 struct ether_addr *mac_addr);
250 * Reset bonded device to use MAC from primary slave on bonded device and it's
253 * @param bonded_port_id Port ID of bonded device.
256 * 0 on success, negative value otherwise
259 rte_eth_bond_mac_address_reset(uint8_t bonded_port_id);
262 * Set the transmit policy for bonded device to use when it is operating in
263 * balance mode, this parameter is otherwise ignored in other modes of
266 * @param bonded_port_id Port ID of bonded device.
267 * @param policy Balance mode transmission policy.
270 * 0 on success, negative value otherwise.
273 rte_eth_bond_xmit_policy_set(uint8_t bonded_port_id, uint8_t policy);
276 * Get the transmit policy set on bonded device for balance mode operation
278 * @param bonded_port_id Port ID of bonded device.
281 * Balance transmit policy on success, negative value otherwise.
284 rte_eth_bond_xmit_policy_get(uint8_t bonded_port_id);
287 * Set the link monitoring frequency (in ms) for monitoring the link status of
290 * @param bonded_port_id Port ID of bonded device.
291 * @param internal_ms Monitoring interval in milliseconds
294 * 0 on success, negative value otherwise.
298 rte_eth_bond_link_monitoring_set(uint8_t bonded_port_id, uint32_t internal_ms);
301 * Get the current link monitoring frequency (in ms) for monitoring of the link
302 * status of slave devices
304 * @param bonded_port_id Port ID of bonded device.
307 * Monitoring interval on success, negative value otherwise.
310 rte_eth_bond_link_monitoring_get(uint8_t bonded_port_id);
314 * Set the period in milliseconds for delaying the disabling of a bonded link
315 * when the link down status has been detected
317 * @param bonded_port_id Port ID of bonded device.
318 * @param delay_ms Delay period in milliseconds.
321 * 0 on success, negative value otherwise.
324 rte_eth_bond_link_down_prop_delay_set(uint8_t bonded_port_id, uint32_t delay_ms);
327 * Get the period in milliseconds set for delaying the disabling of a bonded
328 * link when the link down status has been detected
330 * @param bonded_port_id Port ID of bonded device.
333 * Delay period on success, negative value otherwise.
336 rte_eth_bond_link_down_prop_delay_get(uint8_t bonded_port_id);
339 * Set the period in milliseconds for delaying the enabling of a bonded link
340 * when the link up status has been detected
342 * @param bonded_port_id Port ID of bonded device.
343 * @param delay_ms Delay period in milliseconds.
346 * 0 on success, negative value otherwise.
349 rte_eth_bond_link_up_prop_delay_set(uint8_t bonded_port_id, uint32_t delay_ms);
352 * Get the period in milliseconds set for delaying the enabling of a bonded
353 * link when the link up status has been detected
355 * @param bonded_port_id Port ID of bonded device.
358 * Delay period on success, negative value otherwise.
361 rte_eth_bond_link_up_prop_delay_get(uint8_t bonded_port_id);