23 #include <osmocom/core/linuxlist.h>
50 struct gsm_bts_trx *trx;
78 int old_size,
int new_size);
84 #define MSGB_ABORT(msg, fmt, args ...) do { \
85 osmo_panic("msgb(%p): " fmt, msg, ## args); \
88 #define MSGB_ABORT(msg, fmt, args ...)
92 #define msgb_l1(m) ((void *)(m->l1h))
94 #define msgb_l2(m) ((void *)(m->l2h))
96 #define msgb_l3(m) ((void *)(m->l3h))
98 #define msgb_sms(m) ((void *)(m->l4h))
186 unsigned char *tmp = msgb->
tail;
188 MSGB_ABORT(msgb,
"Not enough tailroom msgb_push (%u < %u)\n",
202 space[0] = word & 0xFF;
212 osmo_store16be(word, space);
222 osmo_store32be(word, space);
231 unsigned char *tmp = msgb->
tail -
len;
233 MSGB_ABORT(msgb,
"msgb too small to get %u (len %u)\n",
257 return osmo_load16be(space);
267 return osmo_load32be(space);
285 MSGB_ABORT(msgb,
"Not enough headroom msgb_push (%u < %u)\n",
318 msg->
l1h = msg->
l2h = NULL;
339 return osmo_load16be(space);
349 return osmo_load32be(space);
377 MSGB_ABORT(msg,
"Negative length is not allowed\n");
410 osmo_static_assert(size > headroom, headroom_bigger);
424 const unsigned char *lbound;
425 if (!msg || !msg->
data || !msg->
tail ||
434 if (msg->
l1h < lbound)
439 if (msg->
l2h < lbound)
444 if (msg->
l3h < lbound)
449 if (msg->
l4h < lbound)
static unsigned char * msgb_put(struct msgb *msgb, unsigned int len)
append data to end of message buffer
Definition: msgb.h:184
static uint16_t msgb_pull_u16(struct msgb *msgb)
remove uint16 from front of message
Definition: msgb.h:336
static unsigned int msgb_l3len(const struct msgb *msgb)
determine length of L3 message
Definition: msgb.h:131
unsigned long cb[5]
control buffer
Definition: msgb.h:59
unsigned char * l3h
pointer to Layer 3 header. For OML: FOM; RSL: 04.08; GPRS: BSSGP
Definition: msgb.h:56
#define msgb_l3(m)
obtain L3 header of msgb
Definition: msgb.h:96
#define msgb_l1(m)
obtain L1 header of msgb
Definition: msgb.h:92
struct msgb * msgb_alloc(uint16_t size, const char *name)
Allocate a new message buffer.
Definition: msgb.c:48
unsigned char * data
start of message in buffer
Definition: msgb.h:66
Osmocom message buffer.
Definition: msgb.h:42
void msgb_set_talloc_ctx(void *ctx)
Set the talloc context for msgb_alloc.
Definition: msgb.c:152
static int msgb_l3trim(struct msgb *msg, int l3len)
Trim the msgb to a given layer3 length.
Definition: msgb.h:392
static int msgb_trim(struct msgb *msg, int len)
Trim the msgb to a given absolute length.
Definition: msgb.h:374
uint16_t len
length of bytes used in msgb
Definition: msgb.h:62
static unsigned char * msgb_pull_to_l3(struct msgb *msg)
remove (pull) all headers in front of l3h from the message buffer.
Definition: msgb.h:315
void msgb_free(struct msgb *m)
Release given message buffer.
Definition: msgb.c:71
static int msgb_tailroom(const struct msgb *msgb)
determine how much tail room is left in msgb
Definition: msgb.h:155
unsigned char * l4h
pointer to layer 4 header
Definition: msgb.h:57
static unsigned int msgb_l1len(const struct msgb *msgb)
determine length of L1 message
Definition: msgb.h:107
static unsigned char * msgb_get(struct msgb *msgb, unsigned int len)
remove data from end of message
Definition: msgb.h:229
const char * msgb_hexdump(const struct msgb *msg)
Return a (static) buffer containing a hexdump of the msg.
Definition: msgb.c:252
struct msgb * msgb_dequeue(struct llist_head *queue)
Dequeue message buffer from head of queue.
Definition: msgb.c:95
int msgb_resize_area(struct msgb *msg, uint8_t *area, int old_size, int new_size)
Resize an area within an msgb.
Definition: msgb.c:207
static uint32_t msgb_pull_u32(struct msgb *msgb)
remove uint32 from front of message
Definition: msgb.h:346
static unsigned int msgb_l2len(const struct msgb *msgb)
determine length of L2 message
Definition: msgb.h:119
static struct msgb * msgb_alloc_headroom(int size, int headroom, const char *name)
Allocate message buffer with specified headroom.
Definition: msgb.h:407
static unsigned char * msgb_push(struct msgb *msgb, unsigned int len)
prepend (push) some data to start of message
Definition: msgb.h:282
Definition: linuxlist.h:42
unsigned char * l1h
pointer to Layer1 header (if any)
Definition: msgb.h:54
static uint8_t msgb_pull_u8(struct msgb *msgb)
remove uint8 from front of message
Definition: msgb.h:326
void msgb_enqueue(struct llist_head *queue, struct msgb *msg)
Enqueue message buffer to tail of a queue.
Definition: msgb.c:83
struct gsm_lchan * lchan
logical channel
Definition: msgb.h:52
void msgb_reset(struct msgb *m)
Re-set all message buffer pointers.
Definition: msgb.c:115
static void msgb_reserve(struct msgb *msg, int len)
Increase headroom of empty msgb, reducing the tailroom.
Definition: msgb.h:363
unsigned char * tail
end of message in buffer
Definition: msgb.h:65
static void msgb_put_u16(struct msgb *msgb, uint16_t word)
append a uint16 value to the end of the message
Definition: msgb.h:209
static uint8_t msgb_get_u8(struct msgb *msgb)
remove uint8 from end of message
Definition: msgb.h:244
unsigned char * l2h
pointer to A-bis layer 2 header: OML, RSL(RLL), NS
Definition: msgb.h:55
struct msgb * msgb_copy(const struct msgb *msg, const char *name)
Copy an msgb.
Definition: msgb.c:165
unsigned char * head
start of underlying memory buffer
Definition: msgb.h:64
static uint32_t msgb_get_u32(struct msgb *msgb)
remove uint32 from end of message
Definition: msgb.h:264
static int msgb_headroom(const struct msgb *msgb)
determine the amount of headroom in msgb
Definition: msgb.h:167
Osmocom bit level support code.
uint16_t data_len
length of underlying data array
Definition: msgb.h:61
unsigned char _data[0]
optional immediate data array
Definition: msgb.h:67
struct llist_head list
linked list header
Definition: msgb.h:43
uint8_t * msgb_data(const struct msgb *msg)
get pointer to data section of message buffer
Definition: msgb.c:135
#define msgb_l2(m)
obtain L2 header of msgb
Definition: msgb.h:94
static uint16_t msgb_get_u16(struct msgb *msgb)
remove uint16 from end of message
Definition: msgb.h:254
void * dst
reference of origin/destination
Definition: msgb.h:49
static unsigned int msgb_headlen(const struct msgb *msgb)
determine the length of the header
Definition: msgb.h:143
uint16_t msgb_length(const struct msgb *msg)
get length of message buffer
Definition: msgb.c:144
static int msgb_test_invariant(const struct msgb *msg) __attribute__((pure))
Check a message buffer for consistency.
Definition: msgb.h:422
static void msgb_put_u32(struct msgb *msgb, uint32_t word)
append a uint32 value to the end of the message
Definition: msgb.h:219
static unsigned char * msgb_pull(struct msgb *msgb, unsigned int len)
remove (pull) a header from the front of the message buffer
Definition: msgb.h:301
static void msgb_put_u8(struct msgb *msgb, uint8_t word)
append a uint8 value to the end of the message
Definition: msgb.h:199