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34 #ifndef _RTE_ETH_FAILSAFE_PRIVATE_H_
35 #define _RTE_ETH_FAILSAFE_PRIVATE_H_
37 #include <sys/queue.h>
39 #include <rte_atomic.h>
41 #include <rte_ethdev.h>
42 #include <rte_devargs.h>
44 #define FAILSAFE_DRIVER_NAME "Fail-safe PMD"
46 #define PMD_FAILSAFE_MAC_KVARG "mac"
47 #define PMD_FAILSAFE_HOTPLUG_POLL_KVARG "hotplug_poll"
48 #define PMD_FAILSAFE_PARAM_STRING \
50 "exec(<shell command>)," \
55 #define FAILSAFE_HOTPLUG_DEFAULT_TIMEOUT_MS 2000
57 #define FAILSAFE_MAX_ETHPORTS 2
58 #define FAILSAFE_MAX_ETHADDR 128
65 /* id of last sub_device polled */
67 unsigned int socket_id;
68 struct rte_eth_rxq_info info;
69 rte_atomic64_t refcnt[];
75 unsigned int socket_id;
76 struct rte_eth_txq_info info;
77 rte_atomic64_t refcnt[];
81 TAILQ_ENTRY(rte_flow) next;
83 struct rte_flow *flows[FAILSAFE_MAX_ETHPORTS];
84 /* flow description for synchronization */
85 struct rte_flow_desc *fd;
97 /* Exhaustive DPDK device description */
98 struct rte_devargs devargs;
100 struct rte_device *dev;
101 struct rte_eth_dev *edev;
103 /* Device state machine */
104 enum dev_state state;
105 /* Last stats snapshot passed to user */
106 struct rte_eth_stats stats_snapshot;
107 /* Some device are defined as a command line */
109 /* fail-safe device backreference */
110 struct rte_eth_dev *fs_dev;
111 /* flag calling for recollection */
112 volatile unsigned int remove:1;
113 /* flow isolation state */
118 struct rte_eth_dev *dev;
120 * Set of sub_devices.
121 * subs[0] is the preferred device
122 * any other is just another slave
124 struct sub_device *subs;
125 uint8_t subs_head; /* if head == tail, no subs */
126 uint8_t subs_tail; /* first invalid */
127 uint8_t subs_tx; /* current emitting device */
128 uint8_t current_probed;
130 TAILQ_HEAD(sub_flows, rte_flow) flow_list;
131 /* current number of mac_addr slots allocated. */
132 uint32_t nb_mac_addr;
133 struct ether_addr mac_addrs[FAILSAFE_MAX_ETHADDR];
134 uint32_t mac_addr_pool[FAILSAFE_MAX_ETHADDR];
135 /* current capabilities */
136 struct rte_eth_dev_info infos;
138 * Fail-safe state machine.
139 * This level will be tracking state of the EAL and eth
140 * layer at large as defined by the user application.
141 * It will then steer the sub_devices toward the same
142 * synchronized state.
144 enum dev_state state;
145 struct rte_eth_stats stats_accumulator;
146 unsigned int pending_alarm:1; /* An alarm is pending */
147 /* flow isolation state */
153 int failsafe_hotplug_alarm_install(struct rte_eth_dev *dev);
154 int failsafe_hotplug_alarm_cancel(struct rte_eth_dev *dev);
158 void set_burst_fn(struct rte_eth_dev *dev, int force_safe);
160 uint16_t failsafe_rx_burst(void *rxq,
161 struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
162 uint16_t failsafe_tx_burst(void *txq,
163 struct rte_mbuf **tx_pkts, uint16_t nb_pkts);
165 uint16_t failsafe_rx_burst_fast(void *rxq,
166 struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
167 uint16_t failsafe_tx_burst_fast(void *txq,
168 struct rte_mbuf **tx_pkts, uint16_t nb_pkts);
172 int failsafe_args_parse(struct rte_eth_dev *dev, const char *params);
173 void failsafe_args_free(struct rte_eth_dev *dev);
174 int failsafe_args_count_subdevice(struct rte_eth_dev *dev, const char *params);
175 int failsafe_args_parse_subs(struct rte_eth_dev *dev);
179 int failsafe_eal_init(struct rte_eth_dev *dev);
180 int failsafe_eal_uninit(struct rte_eth_dev *dev);
184 int failsafe_eth_dev_state_sync(struct rte_eth_dev *dev);
185 void failsafe_dev_remove(struct rte_eth_dev *dev);
186 void failsafe_stats_increment(struct rte_eth_stats *to,
187 struct rte_eth_stats *from);
188 int failsafe_eth_rmv_event_callback(uint16_t port_id,
189 enum rte_eth_event_type type,
190 void *arg, void *out);
191 int failsafe_eth_lsc_event_callback(uint16_t port_id,
192 enum rte_eth_event_type event,
193 void *cb_arg, void *out);
197 extern const char pmd_failsafe_driver_name[];
198 extern const struct eth_dev_ops failsafe_ops;
199 extern const struct rte_flow_ops fs_flow_ops;
200 extern uint64_t hotplug_poll;
201 extern int mac_from_arg;
205 /* dev: (struct rte_eth_dev *) fail-safe device */
207 ((struct fs_priv *)(dev)->data->dev_private)
209 /* sdev: (struct sub_device *) */
213 /* sdev: (struct sub_device *) */
214 #define PORT_ID(sdev) \
215 (ETH(sdev)->data->port_id)
217 /* sdev: (struct sub_device *) */
218 #define SUB_ID(sdev) \
222 * Stateful iterator construct over fail-safe sub-devices:
223 * s: (struct sub_device *), iterator
224 * i: (uint8_t), increment
225 * dev: (struct rte_eth_dev *), fail-safe ethdev
226 * state: (enum dev_state), minimum acceptable device state
228 #define FOREACH_SUBDEV_STATE(s, i, dev, state) \
229 for (s = fs_find_next((dev), 0, state, &i); \
231 s = fs_find_next((dev), i + 1, state, &i))
234 * Iterator construct over fail-safe sub-devices:
235 * s: (struct sub_device *), iterator
236 * i: (uint8_t), increment
237 * dev: (struct rte_eth_dev *), fail-safe ethdev
239 #define FOREACH_SUBDEV(s, i, dev) \
240 FOREACH_SUBDEV_STATE(s, i, dev, DEV_UNDEFINED)
242 /* dev: (struct rte_eth_dev *) fail-safe device */
243 #define PREFERRED_SUBDEV(dev) \
244 (&PRIV(dev)->subs[0])
246 /* dev: (struct rte_eth_dev *) fail-safe device */
247 #define TX_SUBDEV(dev) \
248 (PRIV(dev)->subs_tx >= PRIV(dev)->subs_tail ? NULL \
249 : (PRIV(dev)->subs[PRIV(dev)->subs_tx].state < DEV_PROBED ? NULL \
250 : &PRIV(dev)->subs[PRIV(dev)->subs_tx]))
253 * s: (struct sub_device *)
254 * ops: (struct eth_dev_ops) member
256 #define SUBOPS(s, ops) \
257 (ETH(s)->dev_ops->ops)
264 * a: (rte_atomic64_t)
266 #define FS_ATOMIC_P(a) \
267 rte_atomic64_add(&(a), 1)
270 * a: (rte_atomic64_t)
272 #define FS_ATOMIC_V(a) \
273 rte_atomic64_sub(&(a), 1)
276 * s: (struct sub_device *)
279 #define FS_ATOMIC_RX(s, i) \
281 &((struct rxq *)((s)->fs_dev->data->rx_queues[i]))->refcnt[(s)->sid] \
284 * s: (struct sub_device *)
287 #define FS_ATOMIC_TX(s, i) \
289 &((struct txq *)((s)->fs_dev->data->tx_queues[i]))->refcnt[(s)->sid] \
292 #define LOG__(level, m, ...) \
293 RTE_LOG(level, PMD, "net_failsafe: " m "%c", __VA_ARGS__)
294 #define LOG_(level, ...) LOG__(level, __VA_ARGS__, '\n')
295 #define DEBUG(...) LOG_(DEBUG, __VA_ARGS__)
296 #define INFO(...) LOG_(INFO, __VA_ARGS__)
297 #define WARN(...) LOG_(WARNING, __VA_ARGS__)
298 #define ERROR(...) LOG_(ERR, __VA_ARGS__)
300 /* inlined functions */
302 static inline struct sub_device *
303 fs_find_next(struct rte_eth_dev *dev,
305 enum dev_state min_state,
308 struct sub_device *subs;
311 subs = PRIV(dev)->subs;
312 tail = PRIV(dev)->subs_tail;
314 if (subs[sid].state >= min_state)
325 * Switch emitting device.
326 * If banned is set, banned must not be considered for
327 * the role of emitting device.
330 fs_switch_dev(struct rte_eth_dev *dev,
331 struct sub_device *banned)
333 struct sub_device *txd;
334 enum dev_state req_state;
336 req_state = PRIV(dev)->state;
337 txd = TX_SUBDEV(dev);
338 if (PREFERRED_SUBDEV(dev)->state >= req_state &&
339 PREFERRED_SUBDEV(dev) != banned) {
340 if (txd != PREFERRED_SUBDEV(dev) &&
342 (req_state == DEV_STARTED) ||
343 (txd && txd->state < DEV_STARTED))) {
344 DEBUG("Switching tx_dev to preferred sub_device");
345 PRIV(dev)->subs_tx = 0;
347 } else if ((txd && txd->state < req_state) ||
350 struct sub_device *sdev = NULL;
353 /* Using acceptable device */
354 FOREACH_SUBDEV_STATE(sdev, i, dev, req_state) {
357 DEBUG("Switching tx_dev to sub_device %d",
359 PRIV(dev)->subs_tx = i;
362 if (i >= PRIV(dev)->subs_tail || sdev == NULL) {
363 DEBUG("No device ready, deactivating tx_dev");
364 PRIV(dev)->subs_tx = PRIV(dev)->subs_tail;
369 set_burst_fn(dev, 0);
373 #endif /* _RTE_ETH_FAILSAFE_PRIVATE_H_ */