Xenomai  3.0-rc7
internal.h
1 
20 #ifndef _RTIPC_INTERNAL_H
21 #define _RTIPC_INTERNAL_H
22 
23 #include <cobalt/kernel/registry.h>
24 #include <cobalt/kernel/clock.h>
25 #include <cobalt/kernel/select.h>
26 #include <rtdm/rtdm.h>
27 #include <rtdm/compat.h>
28 #include <rtdm/driver.h>
29 
30 #define RTIPC_IOV_MAX 64
31 
32 struct rtipc_protocol;
33 
34 struct rtipc_private {
35  struct rtipc_protocol *proto;
36  DECLARE_XNSELECT(send_block);
37  DECLARE_XNSELECT(recv_block);
38  void *state;
39 };
40 
41 struct rtipc_protocol {
42  const char *proto_name;
43  int proto_statesz;
44  int (*proto_init)(void);
45  void (*proto_exit)(void);
46  struct {
47  int (*socket)(struct rtdm_fd *fd);
48  void (*close)(struct rtdm_fd *fd);
49  ssize_t (*recvmsg)(struct rtdm_fd *fd,
50  struct msghdr *msg, int flags);
51  ssize_t (*sendmsg)(struct rtdm_fd *fd,
52  const struct msghdr *msg, int flags);
53  ssize_t (*read)(struct rtdm_fd *fd,
54  void *buf, size_t len);
55  ssize_t (*write)(struct rtdm_fd *fd,
56  const void *buf, size_t len);
57  int (*ioctl)(struct rtdm_fd *fd,
58  unsigned int request, void *arg);
59  unsigned int (*pollstate)(struct rtdm_fd *fd);
60  } proto_ops;
61 };
62 
63 static inline void *rtipc_fd_to_state(struct rtdm_fd *fd)
64 {
65  struct rtipc_private *p = rtdm_fd_to_private(fd);
66  return p->state;
67 }
68 
69 static inline nanosecs_rel_t rtipc_timeval_to_ns(const struct timeval *tv)
70 {
71  nanosecs_rel_t ns = tv->tv_usec * 1000;
72 
73  if (tv->tv_sec)
74  ns += (nanosecs_rel_t)tv->tv_sec * 1000000000UL;
75 
76  return ns;
77 }
78 
79 static inline void rtipc_ns_to_timeval(struct timeval *tv, nanosecs_rel_t ns)
80 {
81  unsigned long nsecs;
82 
83  tv->tv_sec = xnclock_divrem_billion(ns, &nsecs);
84  tv->tv_usec = nsecs / 1000;
85 }
86 
87 int rtipc_get_iovec(struct rtdm_fd *fd, struct iovec *iov,
88  const struct msghdr *msg);
89 
90 int rtipc_put_iovec(struct rtdm_fd *fd, const struct iovec *iov,
91  const struct msghdr *msg);
92 
93 int rtipc_get_sockaddr(struct rtdm_fd *fd,
94  struct sockaddr_ipc **saddrp,
95  const void *arg);
96 
97 int rtipc_put_sockaddr(struct rtdm_fd *fd, void *arg,
98  const struct sockaddr_ipc *saddr);
99 
100 int rtipc_get_sockoptout(struct rtdm_fd *fd,
101  struct _rtdm_getsockopt_args *sopt,
102  const void *arg);
103 
104 int rtipc_put_sockoptout(struct rtdm_fd *fd, void *arg,
105  const struct _rtdm_getsockopt_args *sopt);
106 
107 int rtipc_get_sockoptin(struct rtdm_fd *fd,
108  struct _rtdm_setsockopt_args *sopt,
109  const void *arg);
110 
111 int rtipc_get_timeval(struct rtdm_fd *fd, struct timeval *tv,
112  const void *arg, size_t arglen);
113 
114 int rtipc_put_timeval(struct rtdm_fd *fd, void *arg,
115  const struct timeval *tv, size_t arglen);
116 
117 int rtipc_get_length(struct rtdm_fd *fd, size_t *lenp,
118  const void *arg, size_t arglen);
119 
120 int rtipc_get_arg(struct rtdm_fd *fd, void *dst, const void *src,
121  size_t len);
122 
123 int rtipc_put_arg(struct rtdm_fd *fd, void *dst, const void *src,
124  size_t len);
125 
126 ssize_t rtipc_get_iov_flatlen(struct iovec *iov, int iovlen);
127 
128 extern struct rtipc_protocol xddp_proto_driver;
129 
130 extern struct rtipc_protocol iddp_proto_driver;
131 
132 extern struct rtipc_protocol bufp_proto_driver;
133 
134 extern struct xnptree rtipc_ptree;
135 
136 #define rtipc_wait_context xnthread_wait_context
137 #define rtipc_prepare_wait xnthread_prepare_wait
138 #define rtipc_get_wait_context xnthread_get_wait_context
139 #define rtipc_peek_wait_head(obj) xnsynch_peek_pendq(&(obj)->synch_base)
140 
141 #define COMPAT_CASE(__op) case __op __COMPAT_CASE(__op ## _COMPAT)
142 
143 #endif /* !_RTIPC_INTERNAL_H */
Socket address structure for the RTIPC address family.
Definition: ipc.h:479
static void * rtdm_fd_to_private(struct rtdm_fd *fd)
Locate the driver private area associated to a device context structure.
Definition: driver.h:158
int64_t nanosecs_rel_t
RTDM type for representing relative intervals.
Definition: rtdm.h:49
Real-Time Driver Model for Xenomai, driver API header.