New upstream version 18.08

[deb_dpdk.git] / lib / librte_eal / common / rte_service.c

diff --git a/lib/librte_eal/common/rte_service.c b/lib/librte_eal/common/rte_service.c
index be9b5e6..8767c72 100644 (file)
--- a/lib/librte_eal/common/rte_service.c
+++ b/lib/librte_eal/common/rte_service.c
@@ -52,6 +52,7 @@ struct rte_service_spec_impl {
        rte_atomic32_t num_mapped_cores;
        uint64_t calls;
        uint64_t cycles_spent;
+       uint8_t active_on_lcore[RTE_MAX_LCORE];
 } __rte_cache_aligned;
 
 /* the internal values of a service core */
@@ -61,7 +62,7 @@ struct core_state {
        uint8_t runstate; /* running or stopped */
        uint8_t is_service_core; /* set if core is currently a service core */
 
-       /* extreme statistics */
+       uint64_t loops;
        uint64_t calls_per_service[RTE_SERVICE_NUM_MAX];
 } __rte_cache_aligned;
 
@@ -115,7 +116,7 @@ fail_mem:
        return -ENOMEM;
 }
 
-void __rte_experimental
+void
 rte_service_finalize(void)
 {
        if (!rte_service_library_initialized)
@@ -161,7 +162,7 @@ service_mt_safe(struct rte_service_spec_impl *s)
        return !!(s->spec.capabilities & RTE_SERVICE_CAP_MT_SAFE);
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_set_stats_enable(uint32_t id, int32_t enabled)
 {
        struct rte_service_spec_impl *s;
@@ -175,7 +176,7 @@ rte_service_set_stats_enable(uint32_t id, int32_t enabled)
        return 0;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_set_runstate_mapped_check(uint32_t id, int32_t enabled)
 {
        struct rte_service_spec_impl *s;
@@ -189,13 +190,13 @@ rte_service_set_runstate_mapped_check(uint32_t id, int32_t enabled)
        return 0;
 }
 
-uint32_t __rte_experimental
+uint32_t
 rte_service_get_count(void)
 {
        return rte_service_count;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_get_by_name(const char *name, uint32_t *service_id)
 {
        if (!service_id)
@@ -213,7 +214,7 @@ rte_service_get_by_name(const char *name, uint32_t *service_id)
        return -ENODEV;
 }
 
-const char * __rte_experimental
+const char *
 rte_service_get_name(uint32_t id)
 {
        struct rte_service_spec_impl *s;
@@ -221,7 +222,7 @@ rte_service_get_name(uint32_t id)
        return s->spec.name;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_probe_capability(uint32_t id, uint32_t capability)
 {
        struct rte_service_spec_impl *s;
@@ -229,7 +230,7 @@ rte_service_probe_capability(uint32_t id, uint32_t capability)
        return !!(s->spec.capabilities & capability);
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_component_register(const struct rte_service_spec *spec,
                               uint32_t *id_ptr)
 {
@@ -262,7 +263,7 @@ rte_service_component_register(const struct rte_service_spec *spec,
        return 0;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_component_unregister(uint32_t id)
 {
        uint32_t i;
@@ -283,7 +284,7 @@ rte_service_component_unregister(uint32_t id)
        return 0;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_component_runstate_set(uint32_t id, uint32_t runstate)
 {
        struct rte_service_spec_impl *s;
@@ -298,7 +299,7 @@ rte_service_component_runstate_set(uint32_t id, uint32_t runstate)
        return 0;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_runstate_set(uint32_t id, uint32_t runstate)
 {
        struct rte_service_spec_impl *s;
@@ -313,7 +314,7 @@ rte_service_runstate_set(uint32_t id, uint32_t runstate)
        return 0;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_runstate_get(uint32_t id)
 {
        struct rte_service_spec_impl *s;
@@ -347,15 +348,19 @@ rte_service_runner_do_callback(struct rte_service_spec_impl *s,
 
 
 static inline int32_t
-service_run(uint32_t i, struct core_state *cs, uint64_t service_mask)
+service_run(uint32_t i, int lcore, struct core_state *cs, uint64_t service_mask)
 {
        if (!service_valid(i))
                return -EINVAL;
        struct rte_service_spec_impl *s = &rte_services[i];
        if (s->comp_runstate != RUNSTATE_RUNNING ||
                        s->app_runstate != RUNSTATE_RUNNING ||
-                       !(service_mask & (UINT64_C(1) << i)))
+                       !(service_mask & (UINT64_C(1) << i))) {
+               s->active_on_lcore[lcore] = 0;
                return -ENOEXEC;
+       }
+
+       s->active_on_lcore[lcore] = 1;
 
        /* check do we need cmpset, if MT safe or <= 1 core
         * mapped, atomic ops are not required.
@@ -374,7 +379,26 @@ service_run(uint32_t i, struct core_state *cs, uint64_t service_mask)
        return 0;
 }
 
-int32_t __rte_experimental rte_service_run_iter_on_app_lcore(uint32_t id,
+int32_t __rte_experimental
+rte_service_may_be_active(uint32_t id)
+{
+       uint32_t ids[RTE_MAX_LCORE] = {0};
+       struct rte_service_spec_impl *s = &rte_services[id];
+       int32_t lcore_count = rte_service_lcore_list(ids, RTE_MAX_LCORE);
+       int i;
+
+       if (!service_valid(id))
+               return -EINVAL;
+
+       for (i = 0; i < lcore_count; i++) {
+               if (s->active_on_lcore[ids[i]])
+                       return 1;
+       }
+
+       return 0;
+}
+
+int32_t rte_service_run_iter_on_app_lcore(uint32_t id,
                uint32_t serialize_mt_unsafe)
 {
        /* run service on calling core, using all-ones as the service mask */
@@ -398,7 +422,7 @@ int32_t __rte_experimental rte_service_run_iter_on_app_lcore(uint32_t id,
                return -EBUSY;
        }
 
-       int ret = service_run(id, cs, UINT64_MAX);
+       int ret = service_run(id, rte_lcore_id(), cs, UINT64_MAX);
 
        if (serialize_mt_unsafe)
                rte_atomic32_dec(&s->num_mapped_cores);
@@ -419,9 +443,11 @@ rte_service_runner_func(void *arg)
 
                for (i = 0; i < RTE_SERVICE_NUM_MAX; i++) {
                        /* return value ignored as no change to code flow */
-                       service_run(i, cs, service_mask);
+                       service_run(i, lcore, cs, service_mask);
                }
 
+               cs->loops++;
+
                rte_smp_rmb();
        }
 
@@ -430,7 +456,7 @@ rte_service_runner_func(void *arg)
        return 0;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_lcore_count(void)
 {
        int32_t count = 0;
@@ -440,7 +466,7 @@ rte_service_lcore_count(void)
        return count;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_lcore_list(uint32_t array[], uint32_t n)
 {
        uint32_t count = rte_service_lcore_count();
@@ -463,7 +489,7 @@ rte_service_lcore_list(uint32_t array[], uint32_t n)
        return count;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_lcore_count_services(uint32_t lcore)
 {
        if (lcore >= RTE_MAX_LCORE)
@@ -476,7 +502,7 @@ rte_service_lcore_count_services(uint32_t lcore)
        return __builtin_popcountll(cs->service_mask);
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_start_with_defaults(void)
 {
        /* create a default mapping from cores to services, then start the
@@ -562,7 +588,7 @@ service_update(struct rte_service_spec *service, uint32_t lcore,
        return 0;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_map_lcore_set(uint32_t id, uint32_t lcore, uint32_t enabled)
 {
        struct rte_service_spec_impl *s;
@@ -571,7 +597,7 @@ rte_service_map_lcore_set(uint32_t id, uint32_t lcore, uint32_t enabled)
        return service_update(&s->spec, lcore, &on, 0);
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_map_lcore_get(uint32_t id, uint32_t lcore)
 {
        struct rte_service_spec_impl *s;
@@ -597,7 +623,7 @@ set_lcore_state(uint32_t lcore, int32_t state)
        lcore_states[lcore].is_service_core = (state == ROLE_SERVICE);
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_lcore_reset_all(void)
 {
        /* loop over cores, reset all to mask 0 */
@@ -617,7 +643,7 @@ rte_service_lcore_reset_all(void)
        return 0;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_lcore_add(uint32_t lcore)
 {
        if (lcore >= RTE_MAX_LCORE)
@@ -636,7 +662,7 @@ rte_service_lcore_add(uint32_t lcore)
        return rte_eal_wait_lcore(lcore);
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_lcore_del(uint32_t lcore)
 {
        if (lcore >= RTE_MAX_LCORE)
@@ -655,7 +681,7 @@ rte_service_lcore_del(uint32_t lcore)
        return 0;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_lcore_start(uint32_t lcore)
 {
        if (lcore >= RTE_MAX_LCORE)
@@ -678,7 +704,7 @@ rte_service_lcore_start(uint32_t lcore)
        return ret;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_lcore_stop(uint32_t lcore)
 {
        if (lcore >= RTE_MAX_LCORE)
@@ -708,7 +734,7 @@ rte_service_lcore_stop(uint32_t lcore)
        return 0;
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_attr_get(uint32_t id, uint32_t attr_id, uint32_t *attr_value)
 {
        struct rte_service_spec_impl *s;
@@ -729,6 +755,28 @@ rte_service_attr_get(uint32_t id, uint32_t attr_id, uint32_t *attr_value)
        }
 }
 
+int32_t __rte_experimental
+rte_service_lcore_attr_get(uint32_t lcore, uint32_t attr_id,
+                          uint64_t *attr_value)
+{
+       struct core_state *cs;
+
+       if (lcore >= RTE_MAX_LCORE || !attr_value)
+               return -EINVAL;
+
+       cs = &lcore_states[lcore];
+       if (!cs->is_service_core)
+               return -ENOTSUP;
+
+       switch (attr_id) {
+       case RTE_SERVICE_LCORE_ATTR_LOOPS:
+               *attr_value = cs->loops;
+               return 0;
+       default:
+               return -EINVAL;
+       }
+}
+
 static void
 rte_service_dump_one(FILE *f, struct rte_service_spec_impl *s,
                     uint64_t all_cycles, uint32_t reset)
@@ -753,7 +801,7 @@ rte_service_dump_one(FILE *f, struct rte_service_spec_impl *s,
                        s->cycles_spent, s->cycles_spent / calls);
 }
 
-int32_t __rte_experimental
+int32_t
 rte_service_attr_reset_all(uint32_t id)
 {
        struct rte_service_spec_impl *s;
@@ -764,6 +812,23 @@ rte_service_attr_reset_all(uint32_t id)
        return 0;
 }
 
+int32_t __rte_experimental
+rte_service_lcore_attr_reset_all(uint32_t lcore)
+{
+       struct core_state *cs;
+
+       if (lcore >= RTE_MAX_LCORE)
+               return -EINVAL;
+
+       cs = &lcore_states[lcore];
+       if (!cs->is_service_core)
+               return -ENOTSUP;
+
+       cs->loops = 0;
+
+       return 0;
+}
+
 static void
 service_dump_calls_per_lcore(FILE *f, uint32_t lcore, uint32_t reset)
 {
@@ -781,7 +846,8 @@ service_dump_calls_per_lcore(FILE *f, uint32_t lcore, uint32_t reset)
        fprintf(f, "\n");
 }
 
-int32_t __rte_experimental rte_service_dump(FILE *f, uint32_t id)
+int32_t
+rte_service_dump(FILE *f, uint32_t id)
 {
        uint32_t i;
        int print_one = (id != UINT32_MAX);