Adds functions for detecting and reporting the live-ness of LCores,
the primary requirement of which is minimal overheads for the
core(s) being checked. Core failures are notified via an application
defined callback.
Signed-off-by: Remy Horton
---
lib/librte_eal/bsdapp/eal/Makefile| 1 +
lib/librte_eal/common/Makefile| 2 +-
lib/librte_eal/common/include/rte_keepalive.h | 146 ++
lib/librte_eal/common/rte_keepalive.c | 124 ++
lib/librte_eal/linuxapp/eal/Makefile | 1 +
5 files changed, 273 insertions(+), 1 deletion(-)
create mode 100644 lib/librte_eal/common/include/rte_keepalive.h
create mode 100644 lib/librte_eal/common/rte_keepalive.c
diff --git a/lib/librte_eal/bsdapp/eal/Makefile
b/lib/librte_eal/bsdapp/eal/Makefile
index a49dcec..65b293f 100644
--- a/lib/librte_eal/bsdapp/eal/Makefile
+++ b/lib/librte_eal/bsdapp/eal/Makefile
@@ -80,6 +80,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_thread.c
SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += rte_malloc.c
SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += malloc_elem.c
SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += malloc_heap.c
+SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += rte_keepalive.c
CFLAGS_eal.o := -D_GNU_SOURCE
#CFLAGS_eal_thread.o := -D_GNU_SOURCE
diff --git a/lib/librte_eal/common/Makefile b/lib/librte_eal/common/Makefile
index 0c43d6a..7f1757a 100644
--- a/lib/librte_eal/common/Makefile
+++ b/lib/librte_eal/common/Makefile
@@ -40,7 +40,7 @@ INC += rte_string_fns.h rte_version.h
INC += rte_eal_memconfig.h rte_malloc_heap.h
INC += rte_hexdump.h rte_devargs.h rte_dev.h
INC += rte_pci_dev_feature_defs.h rte_pci_dev_features.h
-INC += rte_malloc.h
+INC += rte_malloc.h rte_keepalive.h
ifeq ($(CONFIG_RTE_INSECURE_FUNCTION_WARNING),y)
INC += rte_warnings.h
diff --git a/lib/librte_eal/common/include/rte_keepalive.h
b/lib/librte_eal/common/include/rte_keepalive.h
new file mode 100644
index 000..eab7255
--- /dev/null
+++ b/lib/librte_eal/common/include/rte_keepalive.h
@@ -0,0 +1,146 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright 2015 Intel Shannon Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file keepalive.h
+ * DPDK RTE LCore Keepalive Monitor.
+ *
+ **/
+
+#ifndef _KEEPALIVE_H_
+#define _KEEPALIVE_H_
+
+#include
+
+#ifndef RTE_KEEPALIVE_MAXCORES
+/**
+ * Number of cores to track.
+ * @note Must be larger than the highest core id. */
+#define RTE_KEEPALIVE_MAXCORES RTE_MAX_LCORE
+#endif
+
+
+/**
+ * Keepalive failure callback.
+ *
+ * Receives a data pointer passed to rte_keepalive_create() and the id of the
+ * failed core.
+ */
+typedef void (*rte_keepalive_failure_callback_t)(
+ void *data,
+ const int id_core);
+
+
+/**
+ * Keepalive state structure.
+ * @internal
+ */
+struct rte_keepalive {
+ /** Core Liveness. */
+
+ enum {
+ ALIVE = 1,
+ MISSING = 0,
+ DEAD = 2,
+ GONE = 3
+ } __rte_cache_aligned state_flags[RTE_KEEPALIVE_MAXCORES];
+
+ /** Last-seen-alive timestamps */
+ uint64_t last_alive[RTE_KEEPALIVE_MAXCORES];
+
+ /**
+* Cores to check.
+* Indexed by core id, non-zero if the core should be checked.
+*/
+ uint8_t active_cores[RTE_KEEPALIVE_MAXCORES];
+
+ /** Dead core handler. */
+ rte_keepalive_failure_callback_t callback;
+
+
