libosmo-netif  1.4.0.54-05ff
Osmocom network interface library
osmux.h
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1 #ifndef _OSMUX_H_
2 #define _OSMUX_H_
3 
4 #include <osmocom/core/endian.h>
5 #include <osmocom/core/timer.h>
6 #include <osmocom/core/msgb.h>
7 
16 #define OSMUX_DEFAULT_PORT 1984
17 
32 #define OSMUX_FT_SIGNAL 0
33 #define OSMUX_FT_VOICE_AMR 1
34 #define OSMUX_FT_DUMMY 2
35 
37 struct osmux_hdr {
38 #if OSMO_IS_LITTLE_ENDIAN
39  uint8_t amr_q:1,
40  amr_f:1,
41  ctr:3,
42  ft:2,
43  rtp_m:1;
44 #elif OSMO_IS_BIG_ENDIAN
45 /* auto-generated from the little endian part above (libosmocore/contrib/struct_endianness.py) */
46  uint8_t rtp_m:1, ft:2, ctr:3, amr_f:1, amr_q:1;
47 #endif
48  uint8_t seq;
49 #define OSMUX_CID_MAX 255 /* determined by circuit_id */
50  uint8_t circuit_id;
51 #if OSMO_IS_LITTLE_ENDIAN
52  uint8_t amr_cmr:4,
53  amr_ft:4;
54 #elif OSMO_IS_BIG_ENDIAN
55 /* auto-generated from the little endian part above (libosmocore/contrib/struct_endianness.py) */
56  uint8_t amr_ft:4, amr_cmr:4;
57 #endif
58  uint8_t data[0];
59 } __attribute__((packed));
60 
64  uint8_t osmux_seq;
65  uint8_t batch_factor;
66  uint16_t batch_size;
67 
68  struct {
69  uint32_t input_rtp_msgs;
70  uint32_t output_osmux_msgs;
71  uint64_t input_rtp_bytes;
72  uint64_t output_osmux_bytes;
73  } stats;
74 
75  void (*deliver)(struct msgb *msg, void *data);
76  void *data;
77  char *internal_data; /* internal data to store batch */
78 };
79 
80 #define OSMUX_MAX_CONCURRENT_CALLS 8
81 
82 typedef struct msgb *(*rtp_msgb_alloc_cb_t)(void *rtp_msgb_alloc_priv_data,
83  unsigned int msg_len);
86  uint16_t rtp_seq;
87  uint32_t rtp_timestamp;
88  uint32_t rtp_ssrc;
89  uint8_t rtp_payload_type;
90  uint8_t osmux_seq_ack; /* Latest received seq num */
91  struct osmo_timer_list timer;
92  struct llist_head list;
93  void (*tx_cb)(struct msgb *msg, void *data); /* Used defined rtp tx callback */
94  void *data; /* User defined opaque data structure */
95  rtp_msgb_alloc_cb_t rtp_msgb_alloc_cb; /* User defined msgb alloc function for generated RTP pkts */
96  void *rtp_msgb_alloc_cb_data; /* Opaque data pointer set by user and passed in rtp_msgb_alloc_cb() */
97 };
98 
100 static inline uint8_t *osmux_get_payload(struct osmux_hdr *osmuxh)
101 {
102  return (uint8_t *)osmuxh + sizeof(struct osmux_hdr);
103 }
104 
105 int osmux_snprintf(char *buf, size_t size, struct msgb *msg);
106 
107 /* 1500 - sizeof(iphdr) = 20 bytes - sizeof(udphdr) = 8 bytes. */
108 #define OSMUX_BATCH_DEFAULT_MAX 1472
109 
110 struct osmux_in_handle *osmux_xfrm_input_alloc(void *ctx);
111 void osmux_xfrm_input_init(struct osmux_in_handle *h) OSMO_DEPRECATED("Use osmux_xfrm_input_alloc() instead");
112 void osmux_xfrm_input_fini(struct osmux_in_handle *h) OSMO_DEPRECATED("Use talloc_free() instead");
113 void osmux_xfrm_input_set_name(struct osmux_in_handle *h, const char *name);
114 int osmux_xfrm_input_set_batch_factor(struct osmux_in_handle *h, uint8_t batch_factor);
115 void osmux_xfrm_input_set_batch_size(struct osmux_in_handle *h, uint16_t batch_size);
116 void osmux_xfrm_input_set_initial_seqnum(struct osmux_in_handle *h, uint8_t osmux_seqnum);
117 void osmux_xfrm_input_set_deliver_cb(struct osmux_in_handle *h, void (*deliver_cb)(struct msgb *msg, void *data), void *data);
118 void *osmux_xfrm_input_get_deliver_cb_data(struct osmux_in_handle *h);
119 
120 int osmux_xfrm_input_open_circuit(struct osmux_in_handle *h, int ccid, int dummy);
121 void osmux_xfrm_input_close_circuit(struct osmux_in_handle *h, int ccid);
122 
123 int osmux_xfrm_input(struct osmux_in_handle *h, struct msgb *msg, int ccid);
124 void osmux_xfrm_input_deliver(struct osmux_in_handle *h);
125 
126 struct osmux_out_handle *osmux_xfrm_output_alloc(void *ctx);
127 void osmux_xfrm_output_init(struct osmux_out_handle *h, uint32_t rtp_ssrc) OSMO_DEPRECATED("Use osmux_xfrm_output_alloc() and osmux_xfrm_output_set_rtp_*() instead");
128 void osmux_xfrm_output_init2(struct osmux_out_handle *h, uint32_t rtp_ssrc, uint8_t rtp_payload_type) OSMO_DEPRECATED("Use osmux_xfrm_output_alloc() and osmux_xfrm_output_set_rtp_*() instead");
129 void osmux_xfrm_output_set_rtp_ssrc(struct osmux_out_handle *h, uint32_t rtp_ssrc);
130 void osmux_xfrm_output_set_rtp_pl_type(struct osmux_out_handle *h, uint32_t rtp_payload_type);
131 void osmux_xfrm_output_set_tx_cb(struct osmux_out_handle *h, void (*tx_cb)(struct msgb *msg, void *data), void *data);
132 void osmux_xfrm_output_set_rtp_msgb_alloc_cb(struct osmux_out_handle *h, rtp_msgb_alloc_cb_t cb, void *cb_data);
133 int osmux_xfrm_output_sched(struct osmux_out_handle *h, struct osmux_hdr *osmuxh);
135 struct osmux_hdr *osmux_xfrm_output_pull(struct msgb *msg);
138 #endif
void osmux_xfrm_output_set_rtp_ssrc(struct osmux_out_handle *h, uint32_t rtp_ssrc)
Set SSRC of generated RTP packets from Osmux frames.
Definition: osmux_output.c:382
void osmux_xfrm_output_set_rtp_pl_type(struct osmux_out_handle *h, uint32_t rtp_payload_type)
Set Payload Type of generated RTP packets from Osmux frames.
Definition: osmux_output.c:391
void osmux_xfrm_input_fini(struct osmux_in_handle *h) OSMO_DEPRECATED("Use talloc_free() instead")
Definition: osmux_input.c:852
void osmux_xfrm_output_set_tx_cb(struct osmux_out_handle *h, void(*tx_cb)(struct msgb *msg, void *data), void *data)
Set transmission callback to call when a generated RTP packet is to be transmitted.
Definition: osmux_output.c:356
struct osmux_out_handle * osmux_xfrm_output_alloc(void *ctx)
Allocate a new osmux out handle.
Definition: osmux_output.c:320
void osmux_xfrm_output_init(struct osmux_out_handle *h, uint32_t rtp_ssrc) OSMO_DEPRECATED("Use osmux_xfrm_output_alloc() and osmux_xfrm_output_set_rtp_*() instead")
Definition: osmux_output.c:341
void osmux_xfrm_input_init(struct osmux_in_handle *h) OSMO_DEPRECATED("Use osmux_xfrm_input_alloc() instead")
Definition: osmux_input.c:738
void osmux_xfrm_output_set_rtp_msgb_alloc_cb(struct osmux_out_handle *h, rtp_msgb_alloc_cb_t cb, void *cb_data)
Set callback to call when an RTP packet to be generated is to be allocated.
Definition: osmux_output.c:370
int osmux_xfrm_input(struct osmux_in_handle *h, struct msgb *msg, int ccid)
osmux_xfrm_input - add RTP message to OSmux batch
Definition: osmux_input.c:616
void osmux_xfrm_output_init2(struct osmux_out_handle *h, uint32_t rtp_ssrc, uint8_t rtp_payload_type) OSMO_DEPRECATED("Use osmux_xfrm_output_alloc() and osmux_xfrm_output_set_rtp_*() instead")
Definition: osmux_output.c:334
void osmux_xfrm_output_flush(struct osmux_out_handle *h)
Flush all scheduled RTP packets still pending to be transmitted.
Definition: osmux_output.c:270
struct osmux_in_handle * osmux_xfrm_input_alloc(void *ctx)
Allocate a new osmux in handle (osmux source, tx side)
Definition: osmux_input.c:711
int osmux_snprintf(char *buf, size_t size, struct msgb *msg)
Print osmux header fields and payload from msg into buffer buf.
Definition: osmux.c:108
int osmux_xfrm_output_sched(struct osmux_out_handle *h, struct osmux_hdr *osmuxh)
Generate RTP packets from osmux frame AMR payload set and schedule them for transmission at appropria...
Definition: osmux_output.c:218
Osmux protocol header.
Definition: osmux.h:37
one to handle all existing RTP flows
Definition: osmux.h:62
uint8_t osmux_seq
Initial Osmux seqnum for each circuit, set during osmux_xfrm_input_open_circuit()
Definition: osmux.h:64
one per OSmux circuit_id, ie.
Definition: osmux.h:85