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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 /* Some device are defined as a command line */
107 /* fail-safe device backreference */
108 struct rte_eth_dev *fs_dev;
109 /* flag calling for recollection */
110 volatile unsigned int remove:1;
111 /* flow isolation state */
116 struct rte_eth_dev *dev;
118 * Set of sub_devices.
119 * subs[0] is the preferred device
120 * any other is just another slave
122 struct sub_device *subs;
123 uint8_t subs_head; /* if head == tail, no subs */
124 uint8_t subs_tail; /* first invalid */
125 uint8_t subs_tx; /* current emitting device */
126 uint8_t current_probed;
128 TAILQ_HEAD(sub_flows, rte_flow) flow_list;
129 /* current number of mac_addr slots allocated. */
130 uint32_t nb_mac_addr;
131 struct ether_addr mac_addrs[FAILSAFE_MAX_ETHADDR];
132 uint32_t mac_addr_pool[FAILSAFE_MAX_ETHADDR];
133 /* current capabilities */
134 struct rte_eth_dev_info infos;
136 * Fail-safe state machine.
137 * This level will be tracking state of the EAL and eth
138 * layer at large as defined by the user application.
139 * It will then steer the sub_devices toward the same
140 * synchronized state.
142 enum dev_state state;
143 unsigned int pending_alarm:1; /* An alarm is pending */
144 /* flow isolation state */
150 int failsafe_hotplug_alarm_install(struct rte_eth_dev *dev);
151 int failsafe_hotplug_alarm_cancel(struct rte_eth_dev *dev);
155 void set_burst_fn(struct rte_eth_dev *dev, int force_safe);
157 uint16_t failsafe_rx_burst(void *rxq,
158 struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
159 uint16_t failsafe_tx_burst(void *txq,
160 struct rte_mbuf **tx_pkts, uint16_t nb_pkts);
162 uint16_t failsafe_rx_burst_fast(void *rxq,
163 struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
164 uint16_t failsafe_tx_burst_fast(void *txq,
165 struct rte_mbuf **tx_pkts, uint16_t nb_pkts);
169 int failsafe_args_parse(struct rte_eth_dev *dev, const char *params);
170 void failsafe_args_free(struct rte_eth_dev *dev);
171 int failsafe_args_count_subdevice(struct rte_eth_dev *dev, const char *params);
172 int failsafe_args_parse_subs(struct rte_eth_dev *dev);
176 int failsafe_eal_init(struct rte_eth_dev *dev);
177 int failsafe_eal_uninit(struct rte_eth_dev *dev);
181 int failsafe_eth_dev_state_sync(struct rte_eth_dev *dev);
182 void failsafe_dev_remove(struct rte_eth_dev *dev);
183 int failsafe_eth_rmv_event_callback(uint8_t port_id,
184 enum rte_eth_event_type type,
185 void *arg, void *out);
186 int failsafe_eth_lsc_event_callback(uint8_t port_id,
187 enum rte_eth_event_type event,
188 void *cb_arg, void *out);
192 extern const char pmd_failsafe_driver_name[];
193 extern const struct eth_dev_ops failsafe_ops;
194 extern const struct rte_flow_ops fs_flow_ops;
195 extern uint64_t hotplug_poll;
196 extern int mac_from_arg;
200 /* dev: (struct rte_eth_dev *) fail-safe device */
202 ((struct fs_priv *)(dev)->data->dev_private)
204 /* sdev: (struct sub_device *) */
208 /* sdev: (struct sub_device *) */
209 #define PORT_ID(sdev) \
210 (ETH(sdev)->data->port_id)
212 /* sdev: (struct sub_device *) */
213 #define SUB_ID(sdev) \
217 * Stateful iterator construct over fail-safe sub-devices:
218 * s: (struct sub_device *), iterator
219 * i: (uint8_t), increment
220 * dev: (struct rte_eth_dev *), fail-safe ethdev
221 * state: (enum dev_state), minimum acceptable device state
223 #define FOREACH_SUBDEV_STATE(s, i, dev, state) \
224 for (s = fs_find_next((dev), 0, state, &i); \
226 s = fs_find_next((dev), i + 1, state, &i))
229 * Iterator construct over fail-safe sub-devices:
230 * s: (struct sub_device *), iterator
231 * i: (uint8_t), increment
232 * dev: (struct rte_eth_dev *), fail-safe ethdev
234 #define FOREACH_SUBDEV(s, i, dev) \
235 FOREACH_SUBDEV_STATE(s, i, dev, DEV_UNDEFINED)
237 /* dev: (struct rte_eth_dev *) fail-safe device */
238 #define PREFERRED_SUBDEV(dev) \
239 (&PRIV(dev)->subs[0])
241 /* dev: (struct rte_eth_dev *) fail-safe device */
242 #define TX_SUBDEV(dev) \
243 (PRIV(dev)->subs_tx >= PRIV(dev)->subs_tail ? NULL \
244 : (PRIV(dev)->subs[PRIV(dev)->subs_tx].state < DEV_PROBED ? NULL \
245 : &PRIV(dev)->subs[PRIV(dev)->subs_tx]))
248 * s: (struct sub_device *)
249 * ops: (struct eth_dev_ops) member
251 #define SUBOPS(s, ops) \
252 (ETH(s)->dev_ops->ops)
259 * a: (rte_atomic64_t)
261 #define FS_ATOMIC_P(a) \
262 rte_atomic64_add(&(a), 1)
265 * a: (rte_atomic64_t)
267 #define FS_ATOMIC_V(a) \
268 rte_atomic64_sub(&(a), 1)
271 * s: (struct sub_device *)
274 #define FS_ATOMIC_RX(s, i) \
276 &((struct rxq *)((s)->fs_dev->data->rx_queues[i]))->refcnt[(s)->sid] \
279 * s: (struct sub_device *)
282 #define FS_ATOMIC_TX(s, i) \
284 &((struct txq *)((s)->fs_dev->data->tx_queues[i]))->refcnt[(s)->sid] \
287 #define LOG__(level, m, ...) \
288 RTE_LOG(level, PMD, "net_failsafe: " m "%c", __VA_ARGS__)
289 #define LOG_(level, ...) LOG__(level, __VA_ARGS__, '\n')
290 #define DEBUG(...) LOG_(DEBUG, __VA_ARGS__)
291 #define INFO(...) LOG_(INFO, __VA_ARGS__)
292 #define WARN(...) LOG_(WARNING, __VA_ARGS__)
293 #define ERROR(...) LOG_(ERR, __VA_ARGS__)
295 /* inlined functions */
297 static inline struct sub_device *
298 fs_find_next(struct rte_eth_dev *dev,
300 enum dev_state min_state,
303 struct sub_device *subs;
306 subs = PRIV(dev)->subs;
307 tail = PRIV(dev)->subs_tail;
309 if (subs[sid].state >= min_state)
320 * Switch emitting device.
321 * If banned is set, banned must not be considered for
322 * the role of emitting device.
325 fs_switch_dev(struct rte_eth_dev *dev,
326 struct sub_device *banned)
328 struct sub_device *txd;
329 enum dev_state req_state;
331 req_state = PRIV(dev)->state;
332 txd = TX_SUBDEV(dev);
333 if (PREFERRED_SUBDEV(dev)->state >= req_state &&
334 PREFERRED_SUBDEV(dev) != banned) {
335 if (txd != PREFERRED_SUBDEV(dev) &&
337 (req_state == DEV_STARTED) ||
338 (txd && txd->state < DEV_STARTED))) {
339 DEBUG("Switching tx_dev to preferred sub_device");
340 PRIV(dev)->subs_tx = 0;
342 } else if ((txd && txd->state < req_state) ||
345 struct sub_device *sdev = NULL;
348 /* Using acceptable device */
349 FOREACH_SUBDEV_STATE(sdev, i, dev, req_state) {
352 DEBUG("Switching tx_dev to sub_device %d",
354 PRIV(dev)->subs_tx = i;
357 if (i >= PRIV(dev)->subs_tail || sdev == NULL) {
358 DEBUG("No device ready, deactivating tx_dev");
359 PRIV(dev)->subs_tx = PRIV(dev)->subs_tail;
364 set_burst_fn(dev, 0);
368 #endif /* _RTE_ETH_FAILSAFE_PRIVATE_H_ */