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author | Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2016-07-06 09:22:35 +0200 |
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committer | Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2016-07-06 16:15:13 +0200 |
commit | 809f08006d56e7ba4ce190b0a63d44acf62d8044 (patch) | |
tree | d93fbe3244ee0cff16a6af830c7efb15c26e5ef4 /examples/l2fwd-keepalive/shm.h | |
parent | b8ce7c38b99df118002fb460e680fabf16944f6c (diff) |
Imported Upstream version 16.07-rc1
Change-Id: If3f757dc95532706b04053286c6b54492169f1a3
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'examples/l2fwd-keepalive/shm.h')
-rw-r--r-- | examples/l2fwd-keepalive/shm.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/examples/l2fwd-keepalive/shm.h b/examples/l2fwd-keepalive/shm.h new file mode 100644 index 00000000..25e1b61d --- /dev/null +++ b/examples/l2fwd-keepalive/shm.h @@ -0,0 +1,89 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2016 Intel Corporation. All rights reserved. + * 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. + */ + +#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); |