1 files changed, 69 insertions, 0 deletions
diff --git a/src/spdk/dpdk/examples/l2fwd-keepalive/shm.h b/src/spdk/dpdk/examples/l2fwd-keepalive/shm.h
new file mode 100644
index 00000000..7a9d5972
--- /dev/null
+++ b/src/spdk/dpdk/examples/l2fwd-keepalive/shm.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2016 Intel Corporation
+ */
+
+#define RTE_KEEPALIVE_SHM_NAME "/dpdk_keepalive_shm_name"
+
+#define RTE_KEEPALIVE_SHM_ALIVE 1
+#define RTE_KEEPALIVE_SHM_DEAD 2
+
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <semaphore.h>
+#include <rte_keepalive.h>
+
+/**
+ * Keepalive SHM structure.
+ *
+ * The shared memory allocated by the primary is this size, and contains the
+ * information as contained within this struct. A secondary may open the SHM,
+ * and read the contents.
+ */
+struct rte_keepalive_shm {
+	/** IPC semaphore. Posted when a core dies */
+	sem_t core_died;
+
+	/**
+	 * Relayed status of each core.
+	 */
+	enum rte_keepalive_state core_state[RTE_KEEPALIVE_MAXCORES];
+
+	/**
+	 * Last-seen-alive timestamps for the cores
+	 */
+	uint64_t core_last_seen_times[RTE_KEEPALIVE_MAXCORES];
+};
+
+/**
+ * Create shared host memory keepalive object.
+ * @return
+ *  Pointer to SHM keepalive structure, or NULL on failure.
+ */
+struct rte_keepalive_shm *rte_keepalive_shm_create(void);
+
+/**
+ * Relays state for given core
+ * @param *shm
+ *  Pointer to SHM keepalive structure.
+ * @param id_core
+ *  Id of core
+ * @param core_state
+ *  State of core
+ * @param last_alive
+ *  Last seen timestamp for core
+ */
+void rte_keepalive_relayed_state(struct rte_keepalive_shm *shm,
+	const int id_core, const enum rte_keepalive_state core_state,
+	uint64_t last_alive);
+
+/** Shutdown cleanup of shared host memory keepalive object.
+ * @param *shm
+ *  Pointer to SHM keepalive structure. May be NULL.
+ *
+ *  If *shm is NULL, this function will only attempt to remove the
+ *  shared host memory handle and not unmap the underlying memory.
+ */
+void rte_keepalive_shm_cleanup(struct rte_keepalive_shm *ka_shm);