DPDK  17.11.10
rte_eal_memconfig.h
1 /*-
2  * BSD LICENSE
3  *
4  * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  *
11  * * Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  * * Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in
15  * the documentation and/or other materials provided with the
16  * distribution.
17  * * Neither the name of Intel Corporation nor the names of its
18  * contributors may be used to endorse or promote products derived
19  * from this software without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33 
34 #ifndef _RTE_EAL_MEMCONFIG_H_
35 #define _RTE_EAL_MEMCONFIG_H_
36 
37 #include <rte_config.h>
38 #include <rte_tailq.h>
39 #include <rte_memory.h>
40 #include <rte_memzone.h>
41 #include <rte_malloc_heap.h>
42 #include <rte_rwlock.h>
43 #include <rte_pause.h>
44 
45 #ifdef __cplusplus
46 extern "C" {
47 #endif
48 
55  volatile uint32_t magic;
57  /* memory topology */
58  uint32_t nchannel;
59  uint32_t nrank;
72  uint32_t memzone_cnt;
74  /* memory segments and zones */
75  struct rte_memseg memseg[RTE_MAX_MEMSEG];
76  struct rte_memzone memzone[RTE_MAX_MEMZONE];
78  struct rte_tailq_head tailq_head[RTE_MAX_TAILQ];
80  /* Heaps of Malloc per socket */
81  struct malloc_heap malloc_heaps[RTE_MAX_NUMA_NODES];
82 
83  /* address of mem_config in primary process. used to map shared config into
84  * exact same address the primary process maps it.
85  */
86  uint64_t mem_cfg_addr;
87 } __attribute__((__packed__));
88 
89 
90 inline static void
91 rte_eal_mcfg_wait_complete(struct rte_mem_config* mcfg)
92 {
93  /* wait until shared mem_config finish initialising */
94  while(mcfg->magic != RTE_MAGIC)
95  rte_pause();
96 }
97 
98 #ifdef __cplusplus
99 }
100 #endif
101 
102 #endif /*__RTE_EAL_MEMCONFIG_H_*/
struct rte_memzone memzone[RTE_MAX_MEMZONE]
volatile uint32_t magic
rte_rwlock_t mplock
struct rte_memseg memseg[RTE_MAX_MEMSEG]
static void rte_pause(void)
rte_rwlock_t qlock
struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]
rte_rwlock_t mlock
#define RTE_MAGIC
Definition: rte_eal.h:56