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authorRemy Horton <remy.horton@intel.com>2016-06-15 16:25:50 +0100
committerThomas Monjalon <thomas.monjalon@6wind.com>2016-06-16 18:25:48 +0200
commit90c622f356795ed8f6a340219e0ce7a911f5ced8 (patch)
treefaff51c291c405d2f9c8b76d9268ecf9ba5064d7
parente70a61ad50ab6bcbba40058a025c6f0825c17551 (diff)
downloaddpdk-90c622f356795ed8f6a340219e0ce7a911f5ced8.zip
dpdk-90c622f356795ed8f6a340219e0ce7a911f5ced8.tar.gz
dpdk-90c622f356795ed8f6a340219e0ce7a911f5ced8.tar.xz
keepalive: add liveness callback
Adds and documents new callbacks that allow transitions to core states other than dead to be reported to applications. Signed-off-by: Remy Horton <remy.horton@intel.com>
-rw-r--r--doc/guides/rel_notes/release_16_07.rst6
-rw-r--r--examples/Makefile2
-rw-r--r--lib/librte_eal/bsdapp/eal/rte_eal_version.map1
-rw-r--r--lib/librte_eal/common/include/rte_keepalive.h51
-rw-r--r--lib/librte_eal/common/rte_keepalive.c30
-rw-r--r--lib/librte_eal/linuxapp/eal/rte_eal_version.map2
6 files changed, 91 insertions, 1 deletions
diff --git a/doc/guides/rel_notes/release_16_07.rst b/doc/guides/rel_notes/release_16_07.rst
index 0075e04..ff8cc0d 100644
--- a/doc/guides/rel_notes/release_16_07.rst
+++ b/doc/guides/rel_notes/release_16_07.rst
@@ -70,6 +70,12 @@ New Features
* Enable RSS per network interface through the configuration file.
* Streamline the CLI code.
+* **Added keepalive enhancements.**
+
+ Adds support for reporting of core states other than dead to
+ monitoring applications, enabling the support of broader liveness
+ reporting to external processes.
+
Resolved Issues
---------------
diff --git a/examples/Makefile b/examples/Makefile
index b28b30e..3bc635a 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -1,6 +1,6 @@
# BSD LICENSE
#
-# Copyright(c) 2014 6WIND S.A.
+# Copyright(c) 2016 6WIND S.A.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index f8c3dea..0fb1cf2 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -156,5 +156,6 @@ DPDK_16.07 {
global:
pci_get_sysfs_path;
+ rte_keepalive_register_alive_callback;
} DPDK_16.04;
diff --git a/lib/librte_eal/common/include/rte_keepalive.h b/lib/librte_eal/common/include/rte_keepalive.h
index d01a654..88ad8e4 100644
--- a/lib/librte_eal/common/include/rte_keepalive.h
+++ b/lib/librte_eal/common/include/rte_keepalive.h
@@ -63,12 +63,32 @@ enum rte_keepalive_state {
*
* Receives a data pointer passed to rte_keepalive_create() and the id of the
* failed core.
+ * @param data Data pointer passed to rte_keepalive_create()
+ * @param id_core ID of the core that has failed
*/
typedef void (*rte_keepalive_failure_callback_t)(
void *data,
const int id_core);
/**
+ * Keepalive relay callback.
+ *
+ * Receives a data pointer passed to rte_keepalive_register_relay_callback(),
+ * the id of the core for which state is to be forwarded, and details of the
+ * current core state.
+ * @param data Data pointer passed to rte_keepalive_register_relay_callback()
+ * @param id_core ID of the core for which state is being reported
+ * @param core_state The current state of the core
+ * @param Timestamp of when core was last seen alive
+ */
+typedef void (*rte_keepalive_relay_callback_t)(
+ void *data,
+ const int id_core,
+ enum rte_keepalive_state core_state,
+ uint64_t last_seen
+ );
+
+/**
* Keepalive state structure.
* @internal
*/
@@ -115,4 +135,35 @@ void rte_keepalive_register_core(struct rte_keepalive *keepcfg,
void
rte_keepalive_mark_alive(struct rte_keepalive *keepcfg);
+/**
+ * Per-core sleep-time indication.
+ * @param *keepcfg
+ * Keepalive structure pointer
+ *
+ * If CPU idling is enabled, this function needs to be called from within
+ * the main process loop of the LCore going to sleep, in order to avoid
+ * the LCore being mis-detected as dead.
+ */
+void
+rte_keepalive_mark_sleep(struct rte_keepalive *keepcfg);
+
+/**
+ * Registers a 'live core' callback.
+ *
+ * The complement of the 'dead core' callback. This is called when a
+ * core is known to be alive, and is intended for cases when an app
+ * needs to know 'liveness' beyond just knowing when a core has died.
+ *
+ * @param *keepcfg
+ * Keepalive structure pointer
+ * @param callback
+ * Function called upon detection of a dead core.
+ * @param data
+ * Data pointer to be passed to function callback.
+ */
+void
+rte_keepalive_register_relay_callback(struct rte_keepalive *keepcfg,
+ rte_keepalive_relay_callback_t callback,
+ void *data);
+
#endif /* _KEEPALIVE_H_ */
diff --git a/lib/librte_eal/common/rte_keepalive.c b/lib/librte_eal/common/rte_keepalive.c
index 8b14370..9765d1b 100644
--- a/lib/librte_eal/common/rte_keepalive.c
+++ b/lib/librte_eal/common/rte_keepalive.c
@@ -64,6 +64,15 @@ struct rte_keepalive {
void *callback_data;
uint64_t tsc_initial;
uint64_t tsc_mhz;
+
+ /** Core state relay handler. */
+ rte_keepalive_relay_callback_t relay_callback;
+
+ /**
+ * Core state relay handler app data.
+ * Pointer is passed to live core handler.
+ */
+ void *relay_callback_data;
};
static void
@@ -116,6 +125,13 @@ rte_keepalive_dispatch_pings(__rte_unused void *ptr_timer,
case RTE_KA_STATE_SLEEP: /* Idled core */
break;
}
+ if (keepcfg->relay_callback)
+ keepcfg->relay_callback(
+ keepcfg->relay_callback_data,
+ idx_core,
+ keepcfg->state_flags[idx_core],
+ keepcfg->last_alive[idx_core]
+ );
}
}
@@ -137,6 +153,14 @@ rte_keepalive_create(rte_keepalive_failure_callback_t callback,
return keepcfg;
}
+void rte_keepalive_register_relay_callback(struct rte_keepalive *keepcfg,
+ rte_keepalive_relay_callback_t callback,
+ void *data)
+{
+ keepcfg->relay_callback = callback;
+ keepcfg->relay_callback_data = data;
+}
+
void
rte_keepalive_register_core(struct rte_keepalive *keepcfg, const int id_core)
{
@@ -151,3 +175,9 @@ rte_keepalive_mark_alive(struct rte_keepalive *keepcfg)
{
keepcfg->state_flags[rte_lcore_id()] = RTE_KA_STATE_ALIVE;
}
+
+void
+rte_keepalive_mark_sleep(struct rte_keepalive *keepcfg)
+{
+ keepcfg->state_flags[rte_lcore_id()] = RTE_KA_STATE_DOZING;
+}
diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
index 3d0ff93..cacf9e1 100644
--- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
@@ -159,5 +159,7 @@ DPDK_16.07 {
global:
pci_get_sysfs_path;
+ rte_keepalive_register_alive_callback;
+ rte_keepalive_register_relay_callback;
} DPDK_16.04;