1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016-2017 Intel Corporation
8 #include <rte_eventdev.h>
9 #include <rte_eventdev_pmd_vdev.h>
10 #include <rte_atomic.h>
12 #define SW_DEFAULT_CREDIT_QUANTA 32
13 #define SW_DEFAULT_SCHED_QUANTA 128
14 #define SW_QID_NUM_FIDS 16384
16 #define SW_Q_PRIORITY_MAX 255
17 #define SW_PORTS_MAX 64
18 #define MAX_SW_CONS_Q_DEPTH 128
19 #define SW_INFLIGHT_EVENTS_TOTAL 4096
20 /* allow for lots of over-provisioning */
21 #define MAX_SW_PROD_Q_DEPTH 4096
22 #define SW_FRAGMENTS_MAX 16
24 /* report dequeue burst sizes in buckets */
25 #define SW_DEQ_STAT_BUCKET_SHIFT 2
26 /* how many packets pulled from port by sched */
27 #define SCHED_DEQUEUE_BURST_SIZE 32
29 #define SW_PORT_HIST_LIST (MAX_SW_PROD_Q_DEPTH) /* size of our history list */
30 #define NUM_SAMPLES 64 /* how many data points use for average stats */
32 #define EVENTDEV_NAME_SW_PMD event_sw
33 #define SW_PMD_NAME RTE_STR(event_sw)
34 #define SW_PMD_NAME_MAX 64
36 #define SW_SCHED_TYPE_DIRECT (RTE_SCHED_TYPE_PARALLEL + 1)
38 #define SW_NUM_POLL_BUCKETS (MAX_SW_CONS_Q_DEPTH >> SW_DEQ_STAT_BUCKET_SHIFT)
41 QE_FLAG_VALID_SHIFT = 0,
42 QE_FLAG_COMPLETE_SHIFT,
43 QE_FLAG_NOT_EOP_SHIFT,
47 #define QE_FLAG_VALID (1 << QE_FLAG_VALID_SHIFT) /* for NEW FWD, FRAG */
48 #define QE_FLAG_COMPLETE (1 << QE_FLAG_COMPLETE_SHIFT) /* set for FWD, DROP */
49 #define QE_FLAG_NOT_EOP (1 << QE_FLAG_NOT_EOP_SHIFT) /* set for FRAG only */
51 static const uint8_t sw_qe_flag_map[] = {
52 QE_FLAG_VALID /* NEW Event */,
53 QE_FLAG_VALID | QE_FLAG_COMPLETE /* FWD Event */,
54 QE_FLAG_COMPLETE /* RELEASE Event */,
56 /* Values which can be used for future support for partial
57 * events, i.e. where one event comes back to the scheduler
58 * as multiple which need to be tracked together
60 QE_FLAG_VALID | QE_FLAG_COMPLETE | QE_FLAG_NOT_EOP,
63 #ifdef RTE_LIBRTE_PMD_EVDEV_SW_DEBUG
64 #define SW_LOG_INFO(fmt, args...) \
65 RTE_LOG(INFO, EVENTDEV, "[%s] %s() line %u: " fmt "\n", \
67 __func__, __LINE__, ## args)
69 #define SW_LOG_DBG(fmt, args...) \
70 RTE_LOG(DEBUG, EVENTDEV, "[%s] %s() line %u: " fmt "\n", \
72 __func__, __LINE__, ## args)
74 #define SW_LOG_INFO(fmt, args...)
75 #define SW_LOG_DBG(fmt, args...)
78 #define SW_LOG_ERR(fmt, args...) \
79 RTE_LOG(ERR, EVENTDEV, "[%s] %s() line %u: " fmt "\n", \
81 __func__, __LINE__, ## args)
83 /* Records basic event stats at a given point. Used in port and qid structs */
84 struct sw_point_stats {
90 /* structure used to track what port a flow (FID) is pinned to */
92 /* which CQ this FID is currently pinned to */
94 /* number of packets gone to the CQ with this FID */
98 struct reorder_buffer_entry {
99 uint16_t num_fragments; /**< Number of packet fragments */
100 uint16_t fragment_index; /**< Points to the oldest valid frag */
101 uint8_t ready; /**< Entry is ready to be reordered */
102 struct rte_event fragments[SW_FRAGMENTS_MAX];
106 /* set when the QID has been initialized */
108 /* The type of this QID */
110 /* Integer ID representing the queue. This is used in history lists,
111 * to identify the stage of processing.
114 struct sw_point_stats stats;
116 /* Internal priority rings for packets */
117 struct iq_ring *iq[SW_IQS_MAX];
118 uint32_t iq_pkt_mask; /* A mask to indicate packets in an IQ */
119 uint64_t iq_pkt_count[SW_IQS_MAX];
121 /* Information on what CQs are polling this IQ */
122 uint32_t cq_num_mapped_cqs;
123 uint32_t cq_next_tx; /* cq to write next (non-atomic) packet */
124 uint32_t cq_map[SW_PORTS_MAX];
125 uint64_t to_port[SW_PORTS_MAX];
127 /* Track flow ids for atomic load balancing */
128 struct sw_fid_t fids[SW_QID_NUM_FIDS];
130 /* Track packet order for reordering when needed */
131 struct reorder_buffer_entry *reorder_buffer; /*< pkts await reorder */
132 struct rte_ring *reorder_buffer_freelist; /* available reorder slots */
133 uint32_t reorder_buffer_index; /* oldest valid reorder buffer entry */
134 uint32_t window_size; /* Used to wrap reorder_buffer_index */
139 struct sw_hist_list_entry {
142 struct reorder_buffer_entry *rob_entry;
148 /* new enqueue / dequeue API doesn't have an instance pointer, only the
149 * pointer to the port being enqueue/dequeued from
153 /* set when the port is initialized */
155 /* A numeric ID for the port */
158 int16_t is_directed; /** Takes from a single directed QID */
160 * For loadbalanced we can optimise pulling packets from
161 * producers if there is no reordering involved
163 int16_t num_ordered_qids;
165 /** Ring and buffer for pulling events from workers for scheduling */
166 struct rte_event_ring *rx_worker_ring __rte_cache_aligned;
167 /** Ring and buffer for pushing packets to workers after scheduling */
168 struct rte_event_ring *cq_worker_ring;
172 /* num releases yet to be completed on this port */
173 uint16_t outstanding_releases __rte_cache_aligned;
174 uint16_t inflight_max; /* app requested max inflights for this port */
175 uint16_t inflight_credits; /* num credits this port has right now */
177 uint16_t last_dequeue_burst_sz; /* how big the burst was */
178 uint64_t last_dequeue_ticks; /* used to track burst processing time */
179 uint64_t avg_pkt_ticks; /* tracks average over NUM_SAMPLES burst */
180 uint64_t total_polls; /* how many polls were counted in stats */
181 uint64_t zero_polls; /* tracks polls returning nothing */
182 uint32_t poll_buckets[SW_NUM_POLL_BUCKETS];
183 /* bucket values in 4s for shorter reporting */
185 /* History list structs, containing info on pkts egressed to worker */
186 uint16_t hist_head __rte_cache_aligned;
189 struct sw_hist_list_entry hist_list[SW_PORT_HIST_LIST];
191 /* track packets in and out of this port */
192 struct sw_point_stats stats;
195 uint32_t pp_buf_start;
196 uint32_t pp_buf_count;
197 uint16_t cq_buf_count;
198 struct rte_event pp_buf[SCHED_DEQUEUE_BURST_SIZE];
199 struct rte_event cq_buf[MAX_SW_CONS_Q_DEPTH];
201 uint8_t num_qids_mapped;
205 struct rte_eventdev_data *data;
209 uint32_t xstats_count;
210 struct sw_xstats_entry *xstats;
211 uint32_t xstats_count_mode_dev;
212 uint32_t xstats_count_mode_port;
213 uint32_t xstats_count_mode_queue;
215 /* Contains all ports - load balanced and directed */
216 struct sw_port ports[SW_PORTS_MAX] __rte_cache_aligned;
218 rte_atomic32_t inflights __rte_cache_aligned;
221 * max events in this instance. Cached here for performance.
222 * (also available in data->conf.nb_events_limit)
224 uint32_t nb_events_limit;
226 /* Internal queues - one per logical queue */
227 struct sw_qid qids[RTE_EVENT_MAX_QUEUES_PER_DEV] __rte_cache_aligned;
229 /* Cache how many packets are in each cq */
230 uint16_t cq_ring_space[SW_PORTS_MAX] __rte_cache_aligned;
232 /* Array of pointers to load-balanced QIDs sorted by priority level */
233 struct sw_qid *qids_prioritized[RTE_EVENT_MAX_QUEUES_PER_DEV];
236 struct sw_point_stats stats __rte_cache_aligned;
237 uint64_t sched_called;
238 int32_t sched_quanta;
239 uint64_t sched_no_iq_enqueues;
240 uint64_t sched_no_cq_enqueues;
241 uint64_t sched_cq_qid_called;
244 uint32_t credit_update_quanta;
246 /* store num stats and offset of the stats for each port */
247 uint16_t xstats_count_per_port[SW_PORTS_MAX];
248 uint16_t xstats_offset_for_port[SW_PORTS_MAX];
249 /* store num stats and offset of the stats for each queue */
250 uint16_t xstats_count_per_qid[RTE_EVENT_MAX_QUEUES_PER_DEV];
251 uint16_t xstats_offset_for_qid[RTE_EVENT_MAX_QUEUES_PER_DEV];
254 char service_name[SW_PMD_NAME_MAX];
257 static inline struct sw_evdev *
258 sw_pmd_priv(const struct rte_eventdev *eventdev)
260 return eventdev->data->dev_private;
263 static inline const struct sw_evdev *
264 sw_pmd_priv_const(const struct rte_eventdev *eventdev)
266 return eventdev->data->dev_private;
269 uint16_t sw_event_enqueue(void *port, const struct rte_event *ev);
270 uint16_t sw_event_enqueue_burst(void *port, const struct rte_event ev[],
273 uint16_t sw_event_dequeue(void *port, struct rte_event *ev, uint64_t wait);
274 uint16_t sw_event_dequeue_burst(void *port, struct rte_event *ev, uint16_t num,
276 void sw_event_schedule(struct rte_eventdev *dev);
277 int sw_xstats_init(struct sw_evdev *dev);
278 int sw_xstats_uninit(struct sw_evdev *dev);
279 int sw_xstats_get_names(const struct rte_eventdev *dev,
280 enum rte_event_dev_xstats_mode mode, uint8_t queue_port_id,
281 struct rte_event_dev_xstats_name *xstats_names,
282 unsigned int *ids, unsigned int size);
283 int sw_xstats_get(const struct rte_eventdev *dev,
284 enum rte_event_dev_xstats_mode mode, uint8_t queue_port_id,
285 const unsigned int ids[], uint64_t values[], unsigned int n);
286 uint64_t sw_xstats_get_by_name(const struct rte_eventdev *dev,
287 const char *name, unsigned int *id);
288 int sw_xstats_reset(struct rte_eventdev *dev,
289 enum rte_event_dev_xstats_mode mode,
290 int16_t queue_port_id,
291 const uint32_t ids[],
295 #endif /* _SW_EVDEV_H_ */