LAPDm implementation according to GSM TS 04.06

Files
file	lapdm.h
file	lapdm.c
	GSM LAPDm (TS 04.06) implementation.

Data Structures
struct	lapdm_msg_ctx
	LAPDm message context. More...
struct	lapdm_datalink
	LAPDm datalink like TS 04.06 / Section 3.5.2. More...
struct	lapdm_entity
	a LAPDm Entity More...
struct	lapdm_channel
	the two lapdm_entities that form a GSM logical channel (ACCH + DCCH) More...

Macros
#define	LAPDM_ENT_F_EMPTY_FRAME   0x0001
#define	LAPDM_ENT_F_POLLING_ONLY   0x0002
#define	LAPDM_ENT_F_DROP_2ND_REJ   0x0004
#define	LAPDM_ENT_F_RTS   0x0008
#define	LAPD_U_SABM   0x7
#define	LAPDm_LPD_NORMAL   0
#define	LAPDm_LPD_SMSCB   1
#define	LAPDm_SAPI_NORMAL   0
#define	LAPDm_SAPI_SMS   3
#define	LAPDm_ADDR(lpd, sapi, cr)   ((((lpd) & 0x3) << 5) | (((sapi) & 0x7) << 2) | (((cr) & 0x1) << 1) | 0x1)
#define	LAPDm_ADDR_LPD(addr)   (((addr) >> 5) & 0x3)
#define	LAPDm_ADDR_SAPI(addr)   (((addr) >> 2) & 0x7)
#define	LAPDm_ADDR_CR(addr)   (((addr) >> 1) & 0x1)
#define	LAPDm_ADDR_EA(addr)   ((addr) & 0x1)
#define	LAPDm_ADDR_SHORT_L2(addr)   ((addr) & 0x3)
#define	LAPDm_CTRL_I(nr, ns, p)   ((((nr) & 0x7) << 5) | (((p) & 0x1) << 4) | (((ns) & 0x7) << 1))
#define	LAPDm_CTRL_S(nr, s, p)   ((((nr) & 0x7) << 5) | (((p) & 0x1) << 4) | (((s) & 0x3) << 2) | 0x1)
#define	LAPDm_CTRL_U(u, p)   ((((u) & 0x1c) << (5-2)) | (((p) & 0x1) << 4) | (((u) & 0x3) << 2) | 0x3)
#define	LAPDm_CTRL_is_I(ctrl)   (((ctrl) & 0x1) == 0)
#define	LAPDm_CTRL_is_S(ctrl)   (((ctrl) & 0x3) == 1)
#define	LAPDm_CTRL_is_U(ctrl)   (((ctrl) & 0x3) == 3)
#define	LAPDm_CTRL_U_BITS(ctrl)   ((((ctrl) & 0xC) >> 2) | ((ctrl) & 0xE0) >> 3)
#define	LAPDm_CTRL_PF_BIT(ctrl)   (((ctrl) >> 4) & 0x1)
#define	LAPDm_CTRL_S_BITS(ctrl)   (((ctrl) & 0xC) >> 2)
#define	LAPDm_CTRL_I_Ns(ctrl)   (((ctrl) & 0xE) >> 1)
#define	LAPDm_CTRL_Nr(ctrl)   (((ctrl) & 0xE0) >> 5)
#define	LAPDm_LEN(len)   ((len << 2) | 0x1)
#define	LAPDm_MORE   0x2
#define	LAPDm_EL   0x1
#define	LAPDm_U_UI   0x0
#define	N201_AB_SACCH   18
#define	N201_AB_SDCCH   20
#define	N201_AB_FACCH   20
#define	N201_Bbis   23
#define	N201_Bter_SACCH   21
#define	N201_Bter_SDCCH   23
#define	N201_Bter_FACCH   23
#define	N201_B4   19
#define	N200_EST_REL   5
#define	N200_TR_SACCH   5
#define	N200_TR_SDCCH   23
#define	N200_TR_FACCH_FR   34
#define	N200_TR_EFACCH_FR   48
#define	N200_TR_FACCH_HR   29
#define	N200   N200_TR_SDCCH

Typedefs
typedef int(*	lapdm_cb_t) (struct msgb *msg, struct lapdm_entity *le, void *ctx)

Enumerations
enum	lapdm_mode {   LAPDM_MODE_MS ,   LAPDM_MODE_BTS }
	LAPDm mode/role. More...
enum	lapdm_dl_sapi {   DL_SAPI0 = 0 ,   DL_SAPI3 = 1 ,   _NR_DL_SAPI }
	LAPDm datalink SAPIs. More...
enum	lapdm_format {   LAPDm_FMT_A ,   LAPDm_FMT_B ,   LAPDm_FMT_Bbis ,   LAPDm_FMT_Bter ,   LAPDm_FMT_B4 }

Functions
const char *	get_rsl_name (int value)
struct lapdm_datalink *	lapdm_datalink_for_sapi (struct lapdm_entity *le, uint8_t sapi)
void	lapdm_entity_init (struct lapdm_entity *le, enum lapdm_mode mode, int t200)
	initialize a LAPDm entity and all datalinks inside More...
void	lapdm_entity_init2 (struct lapdm_entity *le, enum lapdm_mode mode, const int *t200_ms, int n200)
	initialize a LAPDm entity and all datalinks inside More...
void	lapdm_entity_init3 (struct lapdm_entity *le, enum lapdm_mode mode, const int *t200_ms, int n200, const char *name_pfx)
	initialize a LAPDm entity and all datalinks inside More...
void	lapdm_channel_init (struct lapdm_channel *lc, enum lapdm_mode mode)
	initialize a LAPDm channel and all its channels More...
int	lapdm_channel_init2 (struct lapdm_channel *lc, enum lapdm_mode mode, const int *t200_ms_dcch, const int *t200_ms_acch, enum gsm_chan_t chan_t)
	initialize a LAPDm channel and all its channels More...
int	lapdm_channel_init3 (struct lapdm_channel *lc, enum lapdm_mode mode, const int *t200_ms_dcch, const int *t200_ms_acch, enum gsm_chan_t chan_t, const char *name_pfx)
	initialize a LAPDm channel and all its channels More...
void	lapdm_entity_exit (struct lapdm_entity *le)
	flush and release all resoures in LAPDm entity More...
void	lapdm_channel_exit (struct lapdm_channel *lc)
int	lapdm_phsap_up (struct osmo_prim_hdr *oph, struct lapdm_entity *le)
	Receive a PH-SAP primitive from L1. More...
int	lapdm_rslms_recvmsg (struct msgb *msg, struct lapdm_channel *lc)
	Receive a RSLms Message buffers from Layer 3. More...
void	lapdm_channel_set_l3 (struct lapdm_channel *lc, lapdm_cb_t cb, void *ctx)
	Set the L3 callback and context of a LAPDm channel. More...
void	lapdm_channel_set_l1 (struct lapdm_channel *lc, osmo_prim_cb cb, void *ctx)
	Set the L1 callback and context of a LAPDm channel. More...
int	lapdm_entity_set_mode (struct lapdm_entity *le, enum lapdm_mode mode)
	Set the lapdm_mode of a LAPDm entity. More...
int	lapdm_channel_set_mode (struct lapdm_channel *lc, enum lapdm_mode mode)
	Set the lapdm_mode of a LAPDm channel. More...
void	lapdm_entity_reset (struct lapdm_entity *le)
	Reset an entire LAPDm entity and all its datalinks. More...
void	lapdm_channel_reset (struct lapdm_channel *lc)
	Reset a LAPDm channel with all its entities. More...
void	lapdm_entity_set_flags (struct lapdm_entity *le, unsigned int flags)
	Set the flags of a LAPDm entity. More...
void	lapdm_channel_set_flags (struct lapdm_channel *lc, unsigned int flags)
	Set the flags of all LAPDm entities in a LAPDm channel. More...
void	lapdm_entity_set_t200_fn (struct lapdm_entity *le, const uint32_t *t200_fn)
	Set the T200 FN timer of a LAPDm entity. More...
void	lapdm_channel_set_t200_fn (struct lapdm_channel *lc, const uint32_t *t200_fn_dcch, const uint32_t *t200_fn_acch)
	Set the T200 FN timer of all LAPDm entities in a LAPDm channel. More...
int	lapdm_phsap_dequeue_prim (struct lapdm_entity *le, struct osmo_phsap_prim *pp)
	dequeue a msg that's pending transmission via L1 and wrap it into a osmo_phsap_prim More...
int	lapdm_phsap_dequeue_prim_fn (struct lapdm_entity *le, struct osmo_phsap_prim *pp, uint32_t fn)
	dequeue a msg that's pending transmission via L1 and wrap it into a osmo_phsap_prim More...
void	lapdm_t200_fn (struct lapdm_entity *le, uint32_t fn)
	Get receive frame number from L1. More...
static int	lapdm_send_ph_data_req (struct lapd_msg_ctx *lctx, struct msgb *msg)
static int	send_rslms_dlsap (struct osmo_dlsap_prim *dp, struct lapd_msg_ctx *lctx)
static int	update_pending_frames (struct lapd_msg_ctx *lctx)
static void	lapdm_dl_init (struct lapdm_datalink *dl, struct lapdm_entity *entity, int t200_ms, uint32_t n200, const char *name)
static int	get_n200_dcch (enum gsm_chan_t chan_t)
static void	lapdm_pad_msgb (struct msgb *msg, uint8_t n201)
static int	rslms_sendmsg (struct msgb *msg, struct lapdm_entity *le)
static int	tx_ph_data_enqueue (struct lapdm_datalink *dl, struct msgb *msg, uint8_t chan_nr, uint8_t link_id, uint8_t pad)
static int	tx_ph_data_enqueue_ui (struct lapdm_datalink *dl, struct msgb *msg, uint8_t chan_nr, uint8_t link_id, uint8_t pad)
static struct msgb *	tx_dequeue_msgb (struct lapdm_datalink *dl, uint32_t fn)
static struct msgb *	tx_dequeue_dcch_msgb (struct lapdm_entity *le, uint32_t fn)
static struct msgb *	tx_dequeue_acch_msgb (struct lapdm_entity *le, uint32_t fn)
static void	lapdm_t200_fn_dl (struct lapdm_datalink *dl, uint32_t fn)
static int	l2_ph_data_conf (struct msgb *msg, struct lapdm_entity *le)
static int	rsl_is_transparent (uint8_t msg_type)
static int	send_rslms_rll_l3 (uint8_t msg_type, struct lapdm_msg_ctx *mctx, struct msgb *msg)
static int	send_rslms_rll_l3_ui (struct lapdm_msg_ctx *mctx, struct msgb *msg)
static int	send_rll_simple (uint8_t msg_type, struct lapdm_msg_ctx *mctx)
static int	rsl_rll_error (uint8_t cause, struct lapdm_msg_ctx *mctx)
static int	lapdm_rx_not_permitted (const struct lapdm_entity *le, const struct lapd_msg_ctx *lctx)
static int	l2_ph_data_ind (struct msgb *msg, struct lapdm_entity *le, uint8_t chan_nr, uint8_t link_id, uint32_t fn)
static int	l2_ph_rach_ind (struct lapdm_entity *le, uint8_t ra, uint32_t fn, uint8_t acc_delay)
static int	l2_ph_chan_conf (struct msgb *msg, struct lapdm_entity *le, uint32_t frame_nr)
static int	set_lapdm_context (struct lapdm_datalink *dl, uint8_t chan_nr, uint8_t link_id, int n201, uint8_t sapi)
static int	rslms_rx_rll_est_req (struct msgb *msg, struct lapdm_datalink *dl)
static int	rslms_rx_rll_udata_req (struct msgb *msg, struct lapdm_datalink *dl)
static int	rslms_rx_rll_data_req (struct msgb *msg, struct lapdm_datalink *dl)
static int	rslms_rx_rll_susp_req (struct msgb *msg, struct lapdm_datalink *dl)
static int	rslms_rx_rll_res_req (struct msgb *msg, struct lapdm_datalink *dl)
static int	rslms_rx_rll_rel_req (struct msgb *msg, struct lapdm_datalink *dl)
static int	rslms_rx_chan_rqd (struct lapdm_channel *lc, struct msgb *msg)
static int	rslms_rx_rll (struct msgb *msg, struct lapdm_channel *lc)
static int	rslms_rx_com_chan (struct msgb *msg, struct lapdm_channel *lc)

Variables
const char *	lapdm_state_names []
const struct value_string	osmo_ph_prim_names []
void *	tall_lapd_ctx

Detailed Description

Macro Definition Documentation

LAPD_U_SABM

#define LAPD_U_SABM   0x7

LAPDm_ADDR

#define LAPDm_ADDR	(		lpd,
			sapi,
			cr
	)		((((lpd) & 0x3) << 5) | (((sapi) & 0x7) << 2) | (((cr) & 0x1) << 1) | 0x1)

LAPDm_ADDR_CR

#define LAPDm_ADDR_CR

(

addr

)

(((addr) >> 1) & 0x1)

LAPDm_ADDR_EA

#define LAPDm_ADDR_EA

(

addr

)

((addr) & 0x1)

LAPDm_ADDR_LPD

#define LAPDm_ADDR_LPD

(

addr

)

(((addr) >> 5) & 0x3)

LAPDm_ADDR_SAPI

#define LAPDm_ADDR_SAPI

(

addr

)

(((addr) >> 2) & 0x7)

LAPDm_ADDR_SHORT_L2

#define LAPDm_ADDR_SHORT_L2

(

addr

)

((addr) & 0x3)

LAPDm_CTRL_I

#define LAPDm_CTRL_I	(		nr,
			ns,
			p
	)		((((nr) & 0x7) << 5) | (((p) & 0x1) << 4) | (((ns) & 0x7) << 1))

LAPDm_CTRL_I_Ns

#define LAPDm_CTRL_I_Ns

(

ctrl

)

(((ctrl) & 0xE) >> 1)

LAPDm_CTRL_is_I

#define LAPDm_CTRL_is_I

(

ctrl

)

(((ctrl) & 0x1) == 0)

LAPDm_CTRL_is_S

#define LAPDm_CTRL_is_S

(

ctrl

)

(((ctrl) & 0x3) == 1)

LAPDm_CTRL_is_U

#define LAPDm_CTRL_is_U

(

ctrl

)

(((ctrl) & 0x3) == 3)

LAPDm_CTRL_Nr

#define LAPDm_CTRL_Nr

(

ctrl

)

(((ctrl) & 0xE0) >> 5)

LAPDm_CTRL_PF_BIT

#define LAPDm_CTRL_PF_BIT

(

ctrl

)

(((ctrl) >> 4) & 0x1)

LAPDm_CTRL_S

#define LAPDm_CTRL_S	(		nr,
			s,
			p
	)		((((nr) & 0x7) << 5) | (((p) & 0x1) << 4) | (((s) & 0x3) << 2) | 0x1)

LAPDm_CTRL_S_BITS

#define LAPDm_CTRL_S_BITS

(

ctrl

)

(((ctrl) & 0xC) >> 2)

LAPDm_CTRL_U

#define LAPDm_CTRL_U	(		u,
			p
	)		((((u) & 0x1c) << (5-2)) | (((p) & 0x1) << 4) | (((u) & 0x3) << 2) | 0x3)

LAPDm_CTRL_U_BITS

#define LAPDm_CTRL_U_BITS

(

ctrl

)

((((ctrl) & 0xC) >> 2) | ((ctrl) & 0xE0) >> 3)

LAPDm_EL

#define LAPDm_EL   0x1

LAPDM_ENT_F_DROP_2ND_REJ

#define LAPDM_ENT_F_DROP_2ND_REJ   0x0004

LAPDM_ENT_F_EMPTY_FRAME

#define LAPDM_ENT_F_EMPTY_FRAME   0x0001

LAPDM_ENT_F_POLLING_ONLY

#define LAPDM_ENT_F_POLLING_ONLY   0x0002

LAPDM_ENT_F_RTS

#define LAPDM_ENT_F_RTS   0x0008

LAPDm_LEN

#define LAPDm_LEN

(

len

)

((len << 2) | 0x1)

LAPDm_LPD_NORMAL

#define LAPDm_LPD_NORMAL   0

LAPDm_LPD_SMSCB

#define LAPDm_LPD_SMSCB   1

LAPDm_MORE

#define LAPDm_MORE   0x2

LAPDm_SAPI_NORMAL

#define LAPDm_SAPI_NORMAL   0

LAPDm_SAPI_SMS

#define LAPDm_SAPI_SMS   3

LAPDm_U_UI

#define LAPDm_U_UI   0x0

N200

#define N200   N200_TR_SDCCH

N200_EST_REL

#define N200_EST_REL   5

N200_TR_EFACCH_FR

#define N200_TR_EFACCH_FR   48

N200_TR_FACCH_FR

#define N200_TR_FACCH_FR   34

N200_TR_FACCH_HR

#define N200_TR_FACCH_HR   29

N200_TR_SACCH

#define N200_TR_SACCH   5

N200_TR_SDCCH

#define N200_TR_SDCCH   23

N201_AB_FACCH

#define N201_AB_FACCH   20

N201_AB_SACCH

#define N201_AB_SACCH   18

N201_AB_SDCCH

#define N201_AB_SDCCH   20

N201_B4

#define N201_B4   19

N201_Bbis

#define N201_Bbis   23

N201_Bter_FACCH

#define N201_Bter_FACCH   23

N201_Bter_SACCH

#define N201_Bter_SACCH   21

N201_Bter_SDCCH

#define N201_Bter_SDCCH   23

Typedef Documentation

lapdm_cb_t

typedef int(* lapdm_cb_t) (struct msgb *msg, struct lapdm_entity *le, void *ctx)

Enumeration Type Documentation

lapdm_dl_sapi

enum lapdm_dl_sapi

LAPDm datalink SAPIs.

Enumerator
DL_SAPI0	SAPI 0.
DL_SAPI3	SAPI 1.
_NR_DL_SAPI

lapdm_format

enum lapdm_format

Enumerator
LAPDm_FMT_A
LAPDm_FMT_B
LAPDm_FMT_Bbis
LAPDm_FMT_Bter
LAPDm_FMT_B4

lapdm_mode

enum lapdm_mode

LAPDm mode/role.

Enumerator
LAPDM_MODE_MS	behave like a MS (mobile phone)
LAPDM_MODE_BTS	behave like a BTS (network)

Function Documentation

get_n200_dcch()

static int get_n200_dcch ( enum gsm_chan_t  chan_t )

static

References GSM_LCHAN_SDCCH, GSM_LCHAN_TCH_F, GSM_LCHAN_TCH_H, N200_TR_FACCH_FR, N200_TR_FACCH_HR, and N200_TR_SDCCH.

Referenced by lapdm_channel_init3().

get_rsl_name()

const char * get_rsl_name

(

int

value

)

References OSMO_DEPRECATED, and OSMO_DEPRECATED_OUTSIDE.

l2_ph_chan_conf()

static int l2_ph_chan_conf ( struct msgb *  msg, struct lapdm_entity *  le, uint32_t  frame_nr  )

static

References abis_rsl_cchan_hdr::chan_nr, abis_rsl_cchan_hdr::data, gsm_fn2gsmtime(), msg, msgb_pull_to_l3(), msgb_push(), RSL_CHAN_RACH, RSL_IE_REQ_REFERENCE, rsl_init_cchan_hdr(), RSL_MT_CHAN_CONF, rslms_sendmsg(), gsm_time::t1, gsm_time::t2, and gsm_time::t3.

Referenced by lapdm_phsap_up().

l2_ph_data_conf()

static int l2_ph_data_conf ( struct msgb *  msg, struct lapdm_entity *  le  )

static

References lapdm_entity::flags, lapdm_entity::l1_ctx, lapdm_entity::l1_prim_cb, LAPDM_ENT_F_EMPTY_FRAME, lapdm_phsap_dequeue_prim(), msg, msgb_free(), osmo_phsap_prim::oph, osmo_prim_init(), PRIM_OP_REQUEST, PRIM_PH_EMPTY_FRAME, SAP_GSM_PH, and lapdm_entity::tx_pending.

Referenced by lapdm_phsap_up().

l2_ph_data_ind()

static int l2_ph_data_ind ( struct msgb *  msg, struct lapdm_entity *  le, uint8_t  chan_nr, uint8_t  link_id, uint32_t  fn  )

static

References lapdm_msg_ctx::chan_nr, chan_nr, lapd_msg_ctx::cr, lapd_msg_ctx::dl, lapdm_msg_ctx::dl, lapdm_datalink::dl, DLLAPD, lapdm_msg_ctx::fn, lapd_msg_ctx::format, LAPD_FORM_I, LAPD_FORM_S, LAPD_FORM_U, LAPD_FORM_UKN, lapd_ph_data_ind(), LAPDm_ADDR_CR, LAPDm_ADDR_EA, LAPDm_ADDR_LPD, LAPDm_ADDR_SAPI, LAPDm_ADDR_SHORT_L2, LAPDm_CTRL_I_Ns, LAPDm_CTRL_is_I, LAPDm_CTRL_is_S, LAPDm_CTRL_is_U, LAPDm_CTRL_Nr, LAPDm_CTRL_PF_BIT, LAPDm_CTRL_S_BITS, LAPDm_CTRL_U_BITS, lapdm_datalink_for_sapi(), LAPDm_EL, lapdm_msg_ctx::lapdm_fmt, LAPDm_FMT_A, LAPDm_FMT_B, LAPDm_FMT_B4, LAPDm_FMT_Bbis, LAPDm_FMT_Bter, LAPDM_MODE_MS, LAPDm_MORE, lapdm_rx_not_permitted(), LAPDm_SAPI_NORMAL, LAPDm_SAPI_SMS, LAPDm_U_UI, lapd_msg_ctx::length, lapdm_msg_ctx::link_id, link_id, LOGDL, LOGL_DEBUG, LOGL_INFO, LOGL_NOTICE, LOGP, lapd_msg_ctx::lpd, lapdm_datalink::mctx, lapdm_entity::mode, lapd_msg_ctx::more, msg, msgb_free(), msgb_pull(), msgb_pull_to_l3(), lapd_msg_ctx::n201, N201_AB_SACCH, N201_AB_SDCCH, N201_B4, N201_Bbis, N201_Bter_SACCH, N201_Bter_SDCCH, lapd_msg_ctx::n_recv, lapd_msg_ctx::n_send, lapd_msg_ctx::p_f, RLL_CAUSE_FRM_UNIMPL, RSL_MT_UNIT_DATA_IND, rsl_rll_error(), lapd_msg_ctx::s_u, lapd_msg_ctx::sapi, send_rslms_rll_l3(), lapdm_msg_ctx::ta_ind, and lapdm_msg_ctx::tx_power_ind.

Referenced by lapdm_phsap_up().

l2_ph_rach_ind()

static int l2_ph_rach_ind ( struct lapdm_entity *  le, uint8_t  ra, uint32_t  fn, uint8_t  acc_delay  )

static

References abis_rsl_cchan_hdr::chan_nr, gsm_fn2gsmtime(), msg, msgb_alloc_headroom(), msgb_push(), msgb_tv_fixed_put(), msgb_tv_put(), req_ref, RSL_CHAN_RACH, RSL_IE_ACCESS_DELAY, RSL_IE_REQ_REFERENCE, rsl_init_cchan_hdr(), RSL_MT_CHAN_RQD, rslms_sendmsg(), gsm_time::t1, gsm_time::t2, and gsm_time::t3.

Referenced by lapdm_phsap_up().

lapdm_channel_exit()

void lapdm_channel_exit

(

struct lapdm_channel *

lc

)

References lapdm_channel::lapdm_acch, lapdm_channel::lapdm_dcch, and lapdm_entity_exit().

lapdm_channel_init()

void lapdm_channel_init	(	struct lapdm_channel *	lc,
		enum lapdm_mode	mode
	)

initialize a LAPDm channel and all its channels

Parameters

[in]	lc	lapdm_channel to be initialized
[in]	mode	lapdm_mode (BTS/MS)

Don't use this function; It doesn't support different T200 values per API and doesn't set the correct N200 counter, both of which are required by GSM specs and supported by lapdm_channel_init2().

References _NR_DL_SAPI, GSM_LCHAN_SDCCH, lapdm_channel_init3(), and mode.

lapdm_channel_init2()

int lapdm_channel_init2	(	struct lapdm_channel *	lc,
		enum lapdm_mode	mode,
		const int *	t200_ms_dcch,
		const int *	t200_ms_acch,
		enum gsm_chan_t	chan_t
	)

initialize a LAPDm channel and all its channels

Parameters

[in]	lc	lapdm_channel to be initialized
[in]	mode	lapdm_mode (BTS/MS)
[in]	t200_ms_dcch	per-SAPI array of T200 in milli-seconds for DCCH
[in]	t200_ms_acch	per-SAPI array of T200 in milli-seconds for SACCH
[in]	chan_t	GSM channel type (to correctly set N200)

References lapdm_channel_init3(), and mode.

lapdm_channel_init3()

int lapdm_channel_init3	(	struct lapdm_channel *	lc,
		enum lapdm_mode	mode,
		const int *	t200_ms_dcch,
		const int *	t200_ms_acch,
		enum gsm_chan_t	chan_t,
		const char *	name_pfx
	)

initialize a LAPDm channel and all its channels

Parameters

[in]	lc	lapdm_channel to be initialized
[in]	mode	lapdm_mode (BTS/MS)
[in]	t200_ms_dcch	per-SAPI array of T200 in milli-seconds for DCCH
[in]	t200_ms_acch	per-SAPI array of T200 in milli-seconds for SACCH
[in]	chan_t	GSM channel type (to correctly set N200)
[in]	name_pfx	human-readable name (copied by function + extended with ACCH/DCCH)

References get_n200_dcch(), lapdm_channel::lapdm_acch, lapdm_entity::lapdm_ch, lapdm_channel::lapdm_dcch, lapdm_entity_init3(), mode, N200_TR_SACCH, name, lapdm_channel::name, namebuf, osmo_talloc_replace_string(), and tall_lapd_ctx.

Referenced by lapdm_channel_init(), and lapdm_channel_init2().

lapdm_channel_reset()

void lapdm_channel_reset

(

struct lapdm_channel *

lc

)

Reset a LAPDm channel with all its entities.

References lapdm_channel::lapdm_acch, lapdm_channel::lapdm_dcch, and lapdm_entity_reset().

lapdm_channel_set_flags()

void lapdm_channel_set_flags	(	struct lapdm_channel *	lc,
		unsigned int	flags
	)

Set the flags of all LAPDm entities in a LAPDm channel.

References flags, lapdm_channel::lapdm_acch, lapdm_channel::lapdm_dcch, and lapdm_entity_set_flags().

lapdm_channel_set_l1()

void lapdm_channel_set_l1	(	struct lapdm_channel *	lc,
		osmo_prim_cb	cb,
		void *	ctx
	)

Set the L1 callback and context of a LAPDm channel.

References lapdm_entity::l1_ctx, lapdm_entity::l1_prim_cb, lapdm_channel::lapdm_acch, and lapdm_channel::lapdm_dcch.

lapdm_channel_set_l3()

void lapdm_channel_set_l3	(	struct lapdm_channel *	lc,
		lapdm_cb_t	cb,
		void *	ctx
	)

Set the L3 callback and context of a LAPDm channel.

References lapdm_entity::l3_cb, lapdm_entity::l3_ctx, lapdm_channel::lapdm_acch, and lapdm_channel::lapdm_dcch.

lapdm_channel_set_mode()

int lapdm_channel_set_mode	(	struct lapdm_channel *	lc,
		enum lapdm_mode	mode
	)

Set the lapdm_mode of a LAPDm channel.

References lapdm_channel::lapdm_acch, lapdm_channel::lapdm_dcch, lapdm_entity_set_mode(), and mode.

lapdm_channel_set_t200_fn()

void lapdm_channel_set_t200_fn	(	struct lapdm_channel *	lc,
		const uint32_t *	t200_fn_dcch,
		const uint32_t *	t200_fn_acch
	)

Set the T200 FN timer of all LAPDm entities in a LAPDm channel.

Parameters

[in]

ref lapdm_channel

Parameters

[in]	t200_fn_dcch	Array of T200 timeout in frame numbers for all SAPIs (0, 3) on SDCCH/FACCH
[in]	t200_fn_acch	Array of T200 timeout in frame numbers for all SAPIs (0, 3) on SACCH

References lapdm_channel::lapdm_acch, lapdm_channel::lapdm_dcch, and lapdm_entity_set_t200_fn().

lapdm_datalink_for_sapi()

struct lapdm_datalink * lapdm_datalink_for_sapi	(	struct lapdm_entity *	le,
		uint8_t	sapi
	)

References lapdm_entity::datalink, LAPDm_SAPI_NORMAL, and LAPDm_SAPI_SMS.

Referenced by l2_ph_data_ind(), and rslms_rx_rll().

lapdm_dl_init()

static void lapdm_dl_init ( struct lapdm_datalink *  dl, struct lapdm_entity *  entity, int  t200_ms, uint32_t  n200, const char *  name  )

static

References lapdm_datalink::dl, lapdm_datalink::entity, lapd_dl_init2(), lapdm_send_ph_data_req(), lapd_datalink::n200, lapd_datalink::n200_est_rel, N200_EST_REL, name, lapd_datalink::reestablish, lapd_datalink::send_dlsap, lapd_datalink::send_ph_data_req, send_rslms_dlsap(), lapd_datalink::t200_sec, lapd_datalink::t200_usec, lapd_datalink::t203_sec, lapd_datalink::t203_usec, update_pending_frames(), and lapd_datalink::update_pending_frames.

Referenced by lapdm_entity_init3().

lapdm_entity_exit()

void lapdm_entity_exit

(

struct lapdm_entity *

le

)

flush and release all resoures in LAPDm entity

References ARRAY_SIZE, lapdm_entity::datalink, lapdm_datalink::dl, lapd_dl_exit(), and msgb_queue_free().

Referenced by lapdm_channel_exit().

lapdm_entity_init()

void lapdm_entity_init	(	struct lapdm_entity *	le,
		enum lapdm_mode	mode,
		int	t200
	)

initialize a LAPDm entity and all datalinks inside

Parameters

[in]	le	LAPDm entity
[in]	mode	lapdm_mode (BTS/MS)
[in]	t200	T200 re-transmission timer for all SAPIs in seconds

Don't use this function; It doesn't support different T200 values per API and doesn't permit the caller to specify the N200 counter, both of which are required by GSM specs and supported by lapdm_entity_init2().

References _NR_DL_SAPI, ARRAY_SIZE, lapdm_entity_init3(), mode, and N200.

lapdm_entity_init2()

void lapdm_entity_init2	(	struct lapdm_entity *	le,
		enum lapdm_mode	mode,
		const int *	t200_ms,
		int	n200
	)

initialize a LAPDm entity and all datalinks inside

Parameters

[in]	le	LAPDm entity
[in]	mode	lapdm_mode (BTS/MS)
[in]	t200_ms	per-SAPI array of T200 re-transmission timer in milli-seconds
[in]	n200	N200 re-transmisison count

References lapdm_entity_init3(), and mode.

lapdm_entity_init3()

void lapdm_entity_init3	(	struct lapdm_entity *	le,
		enum lapdm_mode	mode,
		const int *	t200_ms,
		int	n200,
		const char *	name_pfx
	)

initialize a LAPDm entity and all datalinks inside

Parameters

[in]	le	LAPDm entity
[in]	mode	lapdm_mode (BTS/MS)
[in]	t200_ms	per-SAPI array of T200 re-transmission timer in milli-seconds
[in]	n200	N200 re-transmisison count
[in]	name	human-readable name (will be copied internally + extended with SAPI)

References ARRAY_SIZE, lapdm_entity::datalink, INIT_LLIST_HEAD, lapdm_dl_init(), lapdm_entity_set_mode(), mode, name, and lapdm_datalink::tx_ui_queue.

Referenced by lapdm_channel_init3(), lapdm_entity_init(), and lapdm_entity_init2().

lapdm_entity_reset()

void lapdm_entity_reset

(

struct lapdm_entity *

le

)

Reset an entire LAPDm entity and all its datalinks.

References ARRAY_SIZE, lapdm_entity::datalink, lapdm_datalink::dl, lapd_dl_reset(), and msgb_queue_free().

Referenced by lapdm_channel_reset().

lapdm_entity_set_flags()

void lapdm_entity_set_flags	(	struct lapdm_entity *	le,
		unsigned int	flags
	)

Set the flags of a LAPDm entity.

References ARRAY_SIZE, lapdm_entity::datalink, lapdm_datalink::dl, flags, lapdm_entity::flags, lapd_dl_set_flags(), LAPD_F_DROP_2ND_REJ, LAPD_F_RTS, LAPDM_ENT_F_DROP_2ND_REJ, and LAPDM_ENT_F_RTS.

Referenced by lapdm_channel_set_flags().

lapdm_entity_set_mode()

int lapdm_entity_set_mode	(	struct lapdm_entity *	le,
		enum lapdm_mode	mode
	)

Set the lapdm_mode of a LAPDm entity.

References ARRAY_SIZE, lapdm_entity::datalink, lapdm_datalink::dl, LAPD_MODE_NETWORK, LAPD_MODE_USER, lapd_set_mode(), LAPDM_MODE_BTS, LAPDM_MODE_MS, lapdm_entity::mode, and mode.

Referenced by lapdm_channel_set_mode(), and lapdm_entity_init3().

lapdm_entity_set_t200_fn()

void lapdm_entity_set_t200_fn	(	struct lapdm_entity *	le,
		const uint32_t *	t200_fn
	)

Set the T200 FN timer of a LAPDm entity.

Parameters

[in]

ref lapdm_entity

Parameters

[in]

t200_fn

Array of T200 timeout in frame numbers for all SAPIs (0, 3)

References ARRAY_SIZE, lapdm_entity::datalink, and lapdm_datalink::t200_fn.

Referenced by lapdm_channel_set_t200_fn().

lapdm_pad_msgb()

static void lapdm_pad_msgb ( struct msgb *  msg, uint8_t  n201  )

static

References data, DLLAPD, GSM_MACBLOCK_PADDING, LOGL_ERROR, LOGP, msg, msgb_l2len(), and msgb_put().

Referenced by lapdm_phsap_dequeue_prim_fn(), tx_ph_data_enqueue(), and tx_ph_data_enqueue_ui().

lapdm_phsap_dequeue_prim()

int lapdm_phsap_dequeue_prim	(	struct lapdm_entity *	le,
		struct osmo_phsap_prim *	pp
	)

dequeue a msg that's pending transmission via L1 and wrap it into a osmo_phsap_prim

References lapdm_phsap_dequeue_prim_fn().

Referenced by l2_ph_data_conf().

lapdm_phsap_dequeue_prim_fn()

int lapdm_phsap_dequeue_prim_fn	(	struct lapdm_entity *	le,
		struct osmo_phsap_prim *	pp,
		uint32_t	fn
	)

dequeue a msg that's pending transmission via L1 and wrap it into a osmo_phsap_prim

References ph_data_param::chan_nr, osmo_phsap_prim::data, lapdm_entity::lapdm_ch, lapdm_channel::lapdm_dcch, lapdm_pad_msgb(), ph_data_param::link_id, msg, msgb_pull(), osmo_phsap_prim::oph, osmo_prim_init(), PRIM_OP_REQUEST, PRIM_PH_DATA, SAP_GSM_PH, tx_dequeue_acch_msgb(), tx_dequeue_dcch_msgb(), and osmo_phsap_prim::u.

Referenced by lapdm_phsap_dequeue_prim().

lapdm_phsap_up()

int lapdm_phsap_up	(	struct osmo_prim_hdr *	oph,
		struct lapdm_entity *	le
	)

Receive a PH-SAP primitive from L1.

References ph_rach_ind_param::acc_delay, ph_data_param::chan_nr, osmo_phsap_prim::data, DLLAPD, ph_rach_ind_param::fn, ph_data_param::fn, l2_ph_chan_conf(), l2_ph_data_conf(), l2_ph_data_ind(), l2_ph_rach_ind(), ph_data_param::link_id, LOGL_ERROR, LOGP, osmo_prim_hdr::msg, msgb_free(), osmo_phsap_prim::oph, OSMO_PRIM, OSMO_PRIM_HDR, PRIM_OP_CONFIRM, PRIM_OP_INDICATION, PRIM_PH_DATA, PRIM_PH_RACH, PRIM_PH_RTS, osmo_prim_hdr::primitive, ph_rach_ind_param::ra, osmo_phsap_prim::rach_ind, osmo_prim_hdr::sap, SAP_GSM_PH, and osmo_phsap_prim::u.

lapdm_rslms_recvmsg()

int lapdm_rslms_recvmsg	(	struct msgb *	msg,
		struct lapdm_channel *	lc
	)

Receive a RSLms Message buffers from Layer 3.

'msg' ownership is transferred, i.e. caller must not free it

References ABIS_RSL_MDISC_COM_CHAN, ABIS_RSL_MDISC_RLL, DLLAPD, LOGL_ERROR, LOGP, msg, abis_rsl_common_hdr::msg_discr, msgb_free(), msgb_l2, msgb_l2len(), rslms_rx_com_chan(), and rslms_rx_rll().

lapdm_rx_not_permitted()

static int lapdm_rx_not_permitted ( const struct lapdm_entity *  le, const struct lapd_msg_ctx *  lctx  )

static

References lapd_msg_ctx::format, LAPD_FORM_U, LAPD_U_SABM, lapdm_channel::lapdm_acch, lapdm_entity::lapdm_ch, LAPDM_MODE_BTS, LAPDM_MODE_MS, lapd_msg_ctx::length, lapdm_entity::mode, RLL_CAUSE_SABM_INFO_NOTALL, lapd_msg_ctx::s_u, and lapd_msg_ctx::sapi.

Referenced by l2_ph_data_ind().

lapdm_send_ph_data_req()

static int lapdm_send_ph_data_req ( struct lapd_msg_ctx *  lctx, struct msgb *  msg  )

static

References lapdm_msg_ctx::chan_nr, container_of, lapd_msg_ctx::cr, lapd_msg_ctx::dl, lapdm_msg_ctx::dl, lapdm_datalink::dl, lapdm_datalink::entity, lapd_msg_ctx::format, LAPD_FORM_I, LAPD_FORM_S, LAPD_FORM_U, LAPDm_ADDR, LAPDm_CTRL_I, LAPDm_CTRL_S, LAPDm_CTRL_U, LAPDm_LEN, LAPDm_MORE, lapd_datalink::lctx, lapdm_msg_ctx::link_id, lapd_msg_ctx::lpd, lapdm_datalink::mctx, lapd_msg_ctx::more, msg, msgb_free(), msgb_push(), lapd_msg_ctx::n_recv, lapd_msg_ctx::n_send, lapd_msg_ctx::p_f, lapd_msg_ctx::s_u, lapd_msg_ctx::sapi, lapdm_entity::ta, tx_ph_data_enqueue(), and lapdm_entity::tx_power.

Referenced by lapdm_dl_init().

lapdm_t200_fn()

void lapdm_t200_fn	(	struct lapdm_entity *	le,
		uint32_t	fn
	)

Get receive frame number from L1.

It is used to check the T200 timeout. This function is used if LAPD is in RTS mode only. (Applies if the LAPDM_ENT_F_POLLING_ONLY flag is set.) This function must be called for every valid or invalid data frame received. The frame number fn must be the frame number of the first burst of a data frame. This function must be called after the frame is delivered to layer 2. In case of TCH, this this function must be called for every speech frame received, meaning that there was no valid data frame.

References ARRAY_SIZE, lapdm_entity::datalink, DLLAPD, lapdm_entity::flags, LAPDM_ENT_F_POLLING_ONLY, lapdm_t200_fn_dl(), LOGL_ERROR, and LOGP.

lapdm_t200_fn_dl()

static void lapdm_t200_fn_dl ( struct lapdm_datalink *  dl, uint32_t  fn  )

static

References ADD_MODULO, lapdm_datalink::dl, GSM_MAX_FN, LAPD_F_RTS, lapd_datalink::lapd_flags, LAPD_T200_RTS_RUNNING, lapd_t200_timeout(), LOGDL, LOGL_INFO, OSMO_ASSERT, lapd_datalink::t200_rts, and lapdm_datalink::t200_timeout.

Referenced by lapdm_t200_fn().

rsl_is_transparent()

static int rsl_is_transparent ( uint8_t  msg_type )

static

References msg_type, RSL_MT_DATA_IND, RSL_MT_DATA_REQ, RSL_MT_UNIT_DATA_IND, and RSL_MT_UNIT_DATA_REQ.

Referenced by send_rll_simple(), and send_rslms_rll_l3().

rsl_rll_error()

static int rsl_rll_error ( uint8_t  cause, struct lapdm_msg_ctx *  mctx  )

static

References cause, lapdm_msg_ctx::chan_nr, lapdm_msg_ctx::dl, lapdm_datalink::dl, lapdm_datalink::entity, lapdm_msg_ctx::link_id, LOGDL, LOGL_NOTICE, msg, msgb_tlv_put(), RSL_IE_RLM_CAUSE, RSL_MT_ERROR_IND, rsl_rll_simple(), and rslms_sendmsg().

Referenced by l2_ph_data_ind(), and send_rslms_dlsap().

rslms_rx_chan_rqd()

static int rslms_rx_chan_rqd ( struct lapdm_channel *  lc, struct msgb *  msg  )

static

References abis_rsl_cchan_hdr::data, DLLAPD, ph_rach_req_param::is_combined_ccch, lapdm_entity::l1_ctx, lapdm_entity::l1_prim_cb, lapdm_channel::lapdm_dcch, LOGL_ERROR, LOGP, msg, msgb_free(), msgb_l2, msgb_l2len(), ph_rach_req_param::offset, osmo_phsap_prim::oph, osmo_prim_init(), PRIM_OP_REQUEST, PRIM_PH_RACH, ph_rach_req_param::ra, osmo_phsap_prim::rach_req, RSL_IE_ACCESS_DELAY, RSL_IE_MS_POWER, RSL_IE_REQ_REFERENCE, SAP_GSM_PH, ph_rach_req_param::ta, ph_rach_req_param::tx_power, and osmo_phsap_prim::u.

Referenced by rslms_rx_com_chan().

rslms_rx_com_chan()

static int rslms_rx_com_chan ( struct msgb *  msg, struct lapdm_channel *  lc  )

static

References abis_rsl_cchan_hdr::c, DLLAPD, LOGL_ERROR, LOGL_NOTICE, LOGP, msg, msg_type, abis_rsl_common_hdr::msg_type, msgb_free(), msgb_l2, msgb_l2len(), RSL_MT_CHAN_RQD, and rslms_rx_chan_rqd().

Referenced by lapdm_rslms_recvmsg().

rslms_rx_rll()

static int rslms_rx_rll ( struct msgb *  msg, struct lapdm_channel *  lc  )

static

References abis_rsl_rll_hdr::c, lapd_msg_ctx::dl, lapdm_datalink::dl, DLLAPD, lapdm_channel::lapdm_acch, lapdm_datalink_for_sapi(), lapdm_channel::lapdm_dcch, LAPDM_MODE_BTS, lapd_datalink::lctx, abis_rsl_rll_hdr::link_id, LOGL_ERROR, LOGL_INFO, LOGL_NOTICE, LOGP, lapdm_entity::mode, msg, msg_type, abis_rsl_common_hdr::msg_type, msgb_free(), msgb_l2, msgb_l2len(), lapdm_channel::name, rsl_msg_name(), RSL_MT_DATA_REQ, RSL_MT_EST_REQ, RSL_MT_RECON_REQ, RSL_MT_REL_REQ, RSL_MT_RES_REQ, RSL_MT_SUSP_REQ, RSL_MT_UNIT_DATA_REQ, rslms_rx_rll_data_req(), rslms_rx_rll_est_req(), rslms_rx_rll_rel_req(), rslms_rx_rll_res_req(), rslms_rx_rll_susp_req(), and rslms_rx_rll_udata_req().

Referenced by lapdm_rslms_recvmsg().

rslms_rx_rll_data_req()

static int rslms_rx_rll_data_req ( struct msgb *  msg, struct lapdm_datalink *  dl  )

static

References abis_rsl_rll_hdr::data, lapdm_datalink::dl, lapd_recv_dlsap(), lapd_datalink::lctx, length, LOGDL, LOGL_ERROR, msg, msgb_free(), msgb_l2, msgb_l2len(), msgb_pull_to_l3(), msgb_trim(), osmo_dlsap_prim::oph, osmo_prim_init(), PRIM_DL_DATA, PRIM_OP_REQUEST, RSL_IE_L3_INFO, rsl_tlv_parse, TLVP_LEN, TLVP_PRESENT, and TLVP_VAL.

Referenced by rslms_rx_rll().

rslms_rx_rll_est_req()

static int rslms_rx_rll_est_req ( struct msgb *  msg, struct lapdm_datalink *  dl  )

static

References chan_nr, abis_rsl_rll_hdr::chan_nr, abis_rsl_rll_hdr::data, lapdm_datalink::dl, lapd_recv_dlsap(), lapd_datalink::lctx, length, link_id, abis_rsl_rll_hdr::link_id, LOGDL, LOGL_ERROR, lapdm_datalink::mctx, msg, msgb_free(), msgb_l2, msgb_l2len(), msgb_pull_to_l3(), msgb_trim(), N201_AB_SACCH, N201_AB_SDCCH, osmo_dlsap_prim::oph, osmo_prim_init(), PRIM_DL_EST, PRIM_OP_REQUEST, RSL_IE_L3_INFO, RSL_MT_REL_IND, rsl_tlv_parse, send_rll_simple(), set_lapdm_context(), TLVP_LEN, TLVP_PRESENT, and TLVP_VAL.

Referenced by rslms_rx_rll().

rslms_rx_rll_rel_req()

static int rslms_rx_rll_rel_req ( struct msgb *  msg, struct lapdm_datalink *  dl  )

static

References abis_rsl_rll_hdr::data, lapdm_datalink::dl, lapd_recv_dlsap(), lapd_datalink::lctx, dl_rel_req_param::mode, mode, msg, msgb_l2, msgb_pull_to_l3(), msgb_trim(), osmo_dlsap_prim::oph, osmo_prim_init(), PRIM_DL_REL, PRIM_OP_REQUEST, osmo_dlsap_prim::rel_req, RSL_IE_RELEASE_MODE, and osmo_dlsap_prim::u.

Referenced by rslms_rx_rll().

rslms_rx_rll_res_req()

static int rslms_rx_rll_res_req ( struct msgb *  msg, struct lapdm_datalink *  dl  )

static

References abis_rsl_rll_hdr::c, chan_nr, abis_rsl_rll_hdr::chan_nr, abis_rsl_rll_hdr::data, lapdm_datalink::dl, lapd_recv_dlsap(), lapd_datalink::lctx, length, link_id, abis_rsl_rll_hdr::link_id, LOGDL, LOGL_ERROR, lapdm_datalink::mctx, msg, msg_type, abis_rsl_common_hdr::msg_type, msgb_free(), msgb_l2, msgb_l2len(), msgb_pull_to_l3(), msgb_trim(), N201_AB_SACCH, N201_AB_SDCCH, osmo_dlsap_prim::oph, osmo_prim_init(), PRIM_DL_RECON, PRIM_DL_RES, PRIM_OP_REQUEST, RSL_IE_L3_INFO, RSL_MT_REL_IND, RSL_MT_RES_REQ, rsl_tlv_parse, send_rll_simple(), set_lapdm_context(), TLVP_LEN, TLVP_PRESENT, and TLVP_VAL.

Referenced by rslms_rx_rll().

rslms_rx_rll_susp_req()

static int rslms_rx_rll_susp_req ( struct msgb *  msg, struct lapdm_datalink *  dl  )

static

References lapdm_datalink::dl, lapd_recv_dlsap(), lapd_datalink::lctx, abis_rsl_rll_hdr::link_id, LOGDL, LOGL_ERROR, msg, msgb_free(), msgb_l2, osmo_dlsap_prim::oph, osmo_prim_init(), PRIM_DL_SUSP, and PRIM_OP_REQUEST.

Referenced by rslms_rx_rll().

rslms_rx_rll_udata_req()

static int rslms_rx_rll_udata_req ( struct msgb *  msg, struct lapdm_datalink *  dl  )

static

References chan_nr, abis_rsl_rll_hdr::chan_nr, lapd_cr_ent::cmd, lapd_datalink::cr, abis_rsl_rll_hdr::data, lapdm_datalink::dl, lapdm_datalink::entity, LAPDm_ADDR, LAPDm_CTRL_U, LAPDm_LEN, LAPDm_LPD_NORMAL, LAPDM_MODE_BTS, LAPDm_U_UI, length, link_id, abis_rsl_rll_hdr::link_id, lapd_datalink::loc2rem, LOGDL, LOGL_ERROR, LOGL_INFO, lapdm_entity::mode, msg, msgb_free(), msgb_l2, msgb_l2len(), msgb_pull_to_l3(), msgb_push(), msgb_trim(), RSL_IE_L3_INFO, RSL_IE_MS_POWER, RSL_IE_TIMING_ADVANCE, rsl_tlv_parse, lapdm_entity::ta, TLVP_LEN, TLVP_PRESENT, TLVP_VAL, tx_ph_data_enqueue_ui(), and lapdm_entity::tx_power.

Referenced by rslms_rx_rll().

rslms_sendmsg()

static int rslms_sendmsg ( struct msgb *  msg, struct lapdm_entity *  le  )

static

References lapdm_entity::l3_cb, lapdm_entity::l3_ctx, msg, and msgb_free().

Referenced by l2_ph_chan_conf(), l2_ph_rach_ind(), rsl_rll_error(), send_rll_simple(), send_rslms_rll_l3(), and send_rslms_rll_l3_ui().

send_rll_simple()

static int send_rll_simple ( uint8_t  msg_type, struct lapdm_msg_ctx *  mctx  )

static

References lapdm_msg_ctx::chan_nr, lapdm_msg_ctx::dl, lapdm_datalink::entity, lapdm_msg_ctx::link_id, msg, msg_type, rsl_is_transparent(), rsl_rll_simple(), and rslms_sendmsg().

Referenced by rslms_rx_rll_est_req(), rslms_rx_rll_res_req(), and send_rslms_dlsap().

send_rslms_dlsap()

static int send_rslms_dlsap ( struct osmo_dlsap_prim *  dp, struct lapd_msg_ctx *  lctx  )

static

References mdl_error_ind_param::cause, container_of, lapd_msg_ctx::dl, lapdm_msg_ctx::dl, lapdm_datalink::dl, osmo_dlsap_prim::error_ind, lapd_datalink::lctx, LOGDL, LOGL_ERROR, lapdm_datalink::mctx, osmo_prim_hdr::msg, msgb_free(), osmo_prim_hdr::operation, osmo_dlsap_prim::oph, OSMO_PRIM, OSMO_PRIM_HDR, PRIM_DL_DATA, PRIM_DL_EST, PRIM_DL_REL, PRIM_DL_SUSP, PRIM_DL_UNIT_DATA, PRIM_MDL_ERROR, PRIM_OP_CONFIRM, PRIM_OP_INDICATION, osmo_prim_hdr::primitive, RSL_MT_DATA_IND, RSL_MT_EST_CONF, RSL_MT_EST_IND, RSL_MT_REL_CONF, RSL_MT_REL_IND, RSL_MT_SUSP_CONF, rsl_rll_error(), send_rll_simple(), send_rslms_rll_l3(), send_rslms_rll_l3_ui(), and osmo_dlsap_prim::u.

Referenced by lapdm_dl_init().

send_rslms_rll_l3()

static int send_rslms_rll_l3 ( uint8_t  msg_type, struct lapdm_msg_ctx *  mctx, struct msgb *  msg  )

static

References lapdm_msg_ctx::chan_nr, lapdm_msg_ctx::dl, lapdm_datalink::entity, lapdm_msg_ctx::link_id, msg, msg_type, rsl_is_transparent(), rsl_rll_push_l3(), and rslms_sendmsg().

Referenced by l2_ph_data_ind(), and send_rslms_dlsap().

send_rslms_rll_l3_ui()

static int send_rslms_rll_l3_ui ( struct lapdm_msg_ctx *  mctx, struct msgb *  msg  )

static

References lapdm_msg_ctx::chan_nr, lapdm_msg_ctx::dl, lapdm_datalink::entity, lapdm_msg_ctx::lapdm_fmt, LAPDm_FMT_B4, lapdm_msg_ctx::link_id, msg, msgb_l3, msgb_tv16_push(), msgb_tv_push(), RSL_IE_L3_INFO, RSL_IE_MS_POWER, RSL_IE_TIMING_ADVANCE, RSL_MT_UNIT_DATA_IND, rsl_rll_push_hdr(), rslms_sendmsg(), lapdm_msg_ctx::ta_ind, and lapdm_msg_ctx::tx_power_ind.

Referenced by send_rslms_dlsap().

set_lapdm_context()

static int set_lapdm_context ( struct lapdm_datalink *  dl, uint8_t  chan_nr, uint8_t  link_id, int  n201, uint8_t  sapi  )

static

References lapdm_msg_ctx::chan_nr, chan_nr, lapd_msg_ctx::dl, lapdm_msg_ctx::dl, lapdm_datalink::dl, lapd_datalink::lctx, lapdm_msg_ctx::link_id, link_id, lapdm_datalink::mctx, lapd_msg_ctx::n201, and lapd_msg_ctx::sapi.

Referenced by rslms_rx_rll_est_req(), and rslms_rx_rll_res_req().

tx_dequeue_acch_msgb()

static struct msgb * tx_dequeue_acch_msgb ( struct lapdm_entity *  le, uint32_t  fn  )

static

References ARRAY_SIZE, lapdm_entity::datalink, lapdm_datalink::dl, lapdm_entity::last_tx_dequeue, msg, n, and tx_dequeue_msgb().

Referenced by lapdm_phsap_dequeue_prim_fn().

tx_dequeue_dcch_msgb()

static struct msgb * tx_dequeue_dcch_msgb ( struct lapdm_entity *  le, uint32_t  fn  )

static

References lapdm_entity::datalink, DL_SAPI0, DL_SAPI3, msg, and tx_dequeue_msgb().

Referenced by lapdm_phsap_dequeue_prim_fn().

tx_dequeue_msgb()

static struct msgb * tx_dequeue_msgb ( struct lapdm_datalink *  dl, uint32_t  fn  )

static

References ADD_MODULO, lapd_msg_ctx::dl, lapdm_datalink::entity, lapdm_entity::flags, GSM_MAX_FN, lapd_ph_rts_ind(), LAPDM_ENT_F_RTS, LOGDL, LOGL_INFO, msg, msgb_dequeue(), and lapd_datalink::tx_queue.

Referenced by tx_dequeue_acch_msgb(), and tx_dequeue_dcch_msgb().

tx_ph_data_enqueue()

static int tx_ph_data_enqueue ( struct lapdm_datalink *  dl, struct msgb *  msg, uint8_t  chan_nr, uint8_t  link_id, uint8_t  pad  )

static

References ph_data_param::chan_nr, chan_nr, osmo_phsap_prim::data, lapdm_datalink::dl, lapdm_datalink::entity, lapdm_entity::flags, lapdm_entity::l1_ctx, lapdm_entity::l1_prim_cb, LAPDM_ENT_F_POLLING_ONLY, LAPDM_ENT_F_RTS, lapdm_pad_msgb(), ph_data_param::link_id, link_id, msg, msgb_dequeue(), msgb_enqueue(), msgb_free(), msgb_push(), osmo_phsap_prim::oph, osmo_prim_init(), PRIM_OP_REQUEST, PRIM_PH_DATA, SAP_GSM_PH, lapdm_entity::tx_pending, lapd_datalink::tx_queue, osmo_phsap_prim::u, lapd_datalink::v_ack, and lapd_datalink::v_send.

Referenced by lapdm_send_ph_data_req().

tx_ph_data_enqueue_ui()

static int tx_ph_data_enqueue_ui ( struct lapdm_datalink *  dl, struct msgb *  msg, uint8_t  chan_nr, uint8_t  link_id, uint8_t  pad  )

static

References ph_data_param::chan_nr, chan_nr, osmo_phsap_prim::data, lapdm_datalink::entity, lapdm_entity::flags, lapdm_entity::l1_ctx, lapdm_entity::l1_prim_cb, LAPDM_ENT_F_POLLING_ONLY, lapdm_pad_msgb(), ph_data_param::link_id, link_id, msg, msgb_enqueue(), msgb_push(), osmo_phsap_prim::oph, osmo_prim_init(), PRIM_OP_REQUEST, PRIM_PH_DATA, SAP_GSM_PH, lapdm_entity::tx_pending, lapdm_datalink::tx_ui_queue, and osmo_phsap_prim::u.

Referenced by rslms_rx_rll_udata_req().

update_pending_frames()

static int update_pending_frames ( struct lapd_msg_ctx *  lctx )

static

References lapd_msg_ctx::dl, LAPDm_CTRL_I, LAPDm_CTRL_I_Ns, LAPDm_CTRL_is_I, LAPDm_CTRL_is_S, LAPDm_CTRL_PF_BIT, LAPDm_CTRL_S, LAPDm_CTRL_S_BITS, lapd_datalink::lctx, msgb::list, llist_for_each_entry, msg, lapd_datalink::tx_queue, and lapd_datalink::v_recv.

Referenced by lapdm_dl_init().

Variable Documentation

lapdm_state_names

const char* lapdm_state_names[]

extern

osmo_ph_prim_names

const struct value_string osmo_ph_prim_names[]

Initial value:

= {
        { PRIM_PH_DATA,         "PH-DATA" },
        { PRIM_PH_RACH,         "PH-RANDOM_ACCESS" },
        { PRIM_PH_CONN,         "PH-CONNECT" },
        { PRIM_PH_EMPTY_FRAME,  "PH-EMPTY_FRAME" },
        { PRIM_PH_RTS,          "PH-RTS" },
        { PRIM_MPH_INFO,        "MPH-INFO" },
        { PRIM_TCH,             "TCH" },
        { PRIM_TCH_RTS,         "TCH-RTS" },
        { 0,                    NULL }
}

tall_lapd_ctx

void* tall_lapd_ctx

extern

Referenced by lapdm_channel_init3().