DPDK  16.11.9
rte_tailq.h
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1 /*-
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33 
34 #ifndef _RTE_TAILQ_H_
35 #define _RTE_TAILQ_H_
36 
43 #ifdef __cplusplus
44 extern "C" {
45 #endif
46 
47 #include <sys/queue.h>
48 #include <stdio.h>
49 #include <rte_debug.h>
50 
54  void *data;
55 };
57 TAILQ_HEAD(rte_tailq_entry_head, rte_tailq_entry);
58 
59 #define RTE_TAILQ_NAMESIZE 32
60 
70  struct rte_tailq_entry_head tailq_head;
71  char name[RTE_TAILQ_NAMESIZE];
72 };
73 
74 struct rte_tailq_elem {
79  struct rte_tailq_head *head;
80  TAILQ_ENTRY(rte_tailq_elem) next;
81  const char name[RTE_TAILQ_NAMESIZE];
82 };
83 
87 #define RTE_TAILQ_CAST(tailq_entry, struct_name) \
88  (struct struct_name *)&(tailq_entry)->tailq_head
89 
106 #define RTE_TAILQ_LOOKUP(name, struct_name) \
107  RTE_TAILQ_CAST(rte_eal_tailq_lookup(name), struct_name)
108 
115 void rte_dump_tailq(FILE *f);
116 
130 struct rte_tailq_head *rte_eal_tailq_lookup(const char *name);
131 
148 int rte_eal_tailq_register(struct rte_tailq_elem *t);
149 
150 #define EAL_REGISTER_TAILQ(t) \
151 RTE_INIT(tailqinitfn_ ##t); \
152 static void tailqinitfn_ ##t(void) \
153 { \
154  if (rte_eal_tailq_register(&t) < 0) \
155  rte_panic("Cannot initialize tailq: %s\n", t.name); \
156 }
157 
158 /* This macro permits both remove and free var within the loop safely.*/
159 #ifndef TAILQ_FOREACH_SAFE
160 #define TAILQ_FOREACH_SAFE(var, head, field, tvar) \
161  for ((var) = TAILQ_FIRST((head)); \
162  (var) && ((tvar) = TAILQ_NEXT((var), field), 1); \
163  (var) = (tvar))
164 #endif
165 
166 #ifdef __cplusplus
167 }
168 #endif
169 
170 #endif /* _RTE_TAILQ_H_ */