GPRS Networks Service (NS) messages on the Gb interface 3GPP TS 08.16 version 8.0.1 Release 1999 / ETSI TS 101 299 V8.0.1 (2002-05) More...

Files
file	gprs_ns.h

file	gprs_ns.c
	GPRS Networks Service (NS) messages on the Gb interface.

file	gprs_ns2.c
	GPRS Networks Service (NS) messages on the Gb interface.

Data Structures
struct	gprs_ns_hdr
	Common header of GPRS NS. More...

struct	gprs_ns_ie_ip4_elem
	Section 10.3.2c List of IP4 Elements. More...

struct	gprs_ns_ie_ip6_elem
	Section 10.3.2d List of IP6 Elements. More...

Macros
#define	ns_set_state(ns_, st_) ns_set_state_with_log(ns_, st_, false, __FILE__, __LINE__)

#define	ns_set_remote_state(ns_, st_) ns_set_state_with_log(ns_, st_, true, __FILE__, __LINE__)

#define	ns_mark_blocked(ns_) ns_set_state(ns_, (ns_)->state \| NSE_S_BLOCKED)

#define	ns_mark_unblocked(ns_) ns_set_state(ns_, (ns_)->state & (~NSE_S_BLOCKED));

#define	ns_mark_alive(ns_) ns_set_state(ns_, (ns_)->state \| NSE_S_ALIVE)

#define	ns_mark_dead(ns_) ns_set_state(ns_, (ns_)->state & (~NSE_S_ALIVE));

#define	ERR_IF_NSVC_USES_SNS(nsvc, reason)

#define	CHECK_TX_RC(rc, nsvc)

#define	ns_set_state(ns_, st_) ns_set_state_with_log(ns_, st_, false, __FILE__, __LINE__)

#define	ns_set_remote_state(ns_, st_) ns_set_state_with_log(ns_, st_, true, __FILE__, __LINE__)

#define	ns_mark_blocked(ns_) ns_set_state(ns_, (ns_)->state \| NSE_S_BLOCKED)

#define	ns_mark_unblocked(ns_) ns_set_state(ns_, (ns_)->state & (~NSE_S_BLOCKED));

#define	ns_mark_alive(ns_) ns_set_state(ns_, (ns_)->state \| NSE_S_ALIVE)

#define	ns_mark_dead(ns_) ns_set_state(ns_, (ns_)->state & (~NSE_S_ALIVE));

#define	NS2_LL_MAX_STR 4+2*(INET6_ADDRSTRLEN+9)+8

Enumerations
enum	ns_pdu_type { NS_PDUT_UNITDATA = 0x00 , NS_PDUT_RESET = 0x02 , NS_PDUT_RESET_ACK = 0x03 , NS_PDUT_BLOCK = 0x04 , NS_PDUT_BLOCK_ACK = 0x05 , NS_PDUT_UNBLOCK = 0x06 , NS_PDUT_UNBLOCK_ACK = 0x07 , NS_PDUT_STATUS = 0x08 , NS_PDUT_ALIVE = 0x0a , NS_PDUT_ALIVE_ACK = 0x0b , SNS_PDUT_ACK = 0x0c , SNS_PDUT_ADD = 0x0d , SNS_PDUT_CHANGE_WEIGHT = 0x0e , SNS_PDUT_CONFIG = 0x0f , SNS_PDUT_CONFIG_ACK = 0x10 , SNS_PDUT_DELETE = 0x11 , SNS_PDUT_SIZE = 0x12 , SNS_PDUT_SIZE_ACK = 0x13 }
	NS PDU Type (TS 08.16, Section 10.3.7, Table 14) More...

enum	ns_ctrl_ie { NS_IE_CAUSE = 0x00 , NS_IE_VCI = 0x01 , NS_IE_PDU = 0x02 , NS_IE_BVCI = 0x03 , NS_IE_NSEI = 0x04 , NS_IE_IPv4_LIST = 0x05 , NS_IE_IPv6_LIST = 0x06 , NS_IE_MAX_NR_NSVC = 0x07 , NS_IE_IPv4_EP_NR = 0x08 , NS_IE_IPv6_EP_NR = 0x09 , NS_IE_RESET_FLAG = 0x0a , NS_IE_IP_ADDR = 0x0b , NS_IE_TRANS_ID = 0xff }
	NS Control IE (TS 08.16, Section 10.3, Table 12) More...

enum	ns_cause { NS_CAUSE_TRANSIT_FAIL = 0x00 , NS_CAUSE_OM_INTERVENTION = 0x01 , NS_CAUSE_EQUIP_FAIL = 0x02 , NS_CAUSE_NSVC_BLOCKED = 0x03 , NS_CAUSE_NSVC_UNKNOWN = 0x04 , NS_CAUSE_BVCI_UNKNOWN = 0x05 , NS_CAUSE_SEM_INCORR_PDU = 0x08 , NS_CAUSE_PDU_INCOMP_PSTATE = 0x0a , NS_CAUSE_PROTO_ERR_UNSPEC = 0x0b , NS_CAUSE_INVAL_ESSENT_IE = 0x0c , NS_CAUSE_MISSING_ESSENT_IE = 0x0d , NS_CAUSE_INVAL_NR_IPv4_EP = 0x0e , NS_CAUSE_INVAL_NR_IPv6_EP = 0x0f , NS_CAUSE_INVAL_NR_NS_VC = 0x10 , NS_CAUSE_INVAL_WEIGH = 0x11 , NS_CAUSE_UNKN_IP_EP = 0x12 , NS_CAUSE_UNKN_IP_ADDR = 0x13 , NS_CAUSE_UNKN_IP_TEST_FAILED = 0x14 }
	NS Cause (TS 08.16, Section 10.3.2, Table 13) More...

enum	ns_ctr { NS_CTR_PKTS_IN , NS_CTR_PKTS_OUT , NS_CTR_BYTES_IN , NS_CTR_BYTES_OUT , NS_CTR_BLOCKED , NS_CTR_DEAD , NS_CTR_REPLACED , NS_CTR_NSEI_CHG , NS_CTR_INV_VCI , NS_CTR_INV_NSEI , NS_CTR_LOST_ALIVE , NS_CTR_LOST_RESET , NS_CTR_PKTS_IN , NS_CTR_PKTS_OUT , NS_CTR_PKTS_OUT_DROP , NS_CTR_BYTES_IN , NS_CTR_BYTES_OUT , NS_CTR_BYTES_OUT_DROP , NS_CTR_BLOCKED , NS_CTR_UNBLOCKED , NS_CTR_DEAD , NS_CTR_REPLACED , NS_CTR_NSEI_CHG , NS_CTR_INV_VCI , NS_CTR_INV_NSEI , NS_CTR_LOST_ALIVE , NS_CTR_LOST_RESET }

enum	ns_stat { NS_STAT_ALIVE_DELAY }

Functions
struct gprs_ns_hdr	__attribute__ ((packed))

static bool	nsvc_is_not_used (const struct gprs_nsvc *nsvc)

struct msgb *	gprs_ns_msgb_alloc (void)

static void	ns_set_state_with_log (struct gprs_nsvc nsvc, uint32_t state, bool is_remote, const char file, unsigned line)

struct gprs_nsvc *	gprs_nsvc_by_nsvci (struct gprs_ns_inst *nsi, uint16_t nsvci)
	Lookup struct gprs_nsvc based on NSVCI. More...

struct gprs_nsvc *	gprs_nsvc_by_nsei (struct gprs_ns_inst *nsi, uint16_t nsei)
	Lookup struct gprs_nsvc based on NSEI. More...

static struct gprs_nsvc *	gprs_active_nsvc_by_nsei (struct gprs_ns_inst *nsi, uint16_t nsei, uint16_t bvci)
	Determine active NS-VC for given NSEI + BVCI. More...

struct gprs_nsvc *	gprs_nsvc_by_rem_addr (struct gprs_ns_inst nsi, const struct sockaddr_in sin)
	Lookup NS-VC based on specified remote peer socket addr. More...

static void	gprs_ns_timer_cb (void *data)

struct gprs_nsvc *	gprs_nsvc_create2 (struct gprs_ns_inst *nsi, uint16_t nsvci, uint8_t sig_weight, uint8_t data_weight)
	Create a new NS-VC (Virtual Circuit) within given instance. More...

void	gprs_nsvc_delete (struct gprs_nsvc *nsvc)
	Delete given NS-VC. More...

static void	ns_osmo_signal_dispatch (struct gprs_nsvc *nsvc, unsigned int signal, uint8_t cause)

static void	ns_osmo_signal_dispatch_mismatch (struct gprs_nsvc nsvc, struct msgb msg, uint8_t pdu_type, uint8_t ie_type)

static void	ns_osmo_signal_dispatch_replaced (struct gprs_nsvc nsvc, struct gprs_nsvc old_nsvc)

const char *	gprs_ns_cause_str (enum ns_cause cause)
	Obtain a human-readable string for NS cause value. More...

static int	nsip_sendmsg (struct gprs_nsvc nsvc, struct msgb msg)

int	grps_ns_frgre_sendmsg (struct gprs_nsvc nsvc, struct msgb msg)

static bool	ns_is_sns (uint8_t pdu_type)

static int	gprs_ns_tx (struct gprs_nsvc nsvc, struct msgb msg)

static int	gprs_ns_tx_simple (struct gprs_nsvc *nsvc, uint8_t pdu_type)

int	gprs_ns_tx_reset (struct gprs_nsvc *nsvc, uint8_t cause)
	Transmit a NS-RESET on a given NSVC. More...

int	gprs_ns_tx_status (struct gprs_nsvc nsvc, uint8_t cause, uint16_t bvci, struct msgb orig_msg)
	Transmit a NS-STATUS on a given NSVC. More...

int	gprs_ns_tx_block (struct gprs_nsvc *nsvc, uint8_t cause)
	Transmit a NS-BLOCK on a given NS-VC. More...

static int	gprs_ns_tx_block_ack (struct gprs_nsvc *nsvc)
	Transmit a NS-BLOCK-ACK on a given NS-VC. More...

int	gprs_ns_tx_unblock (struct gprs_nsvc *nsvc)
	Transmit a NS-UNBLOCK on a given NS-VC. More...

int	gprs_ns_tx_alive (struct gprs_nsvc *nsvc)
	Transmit a NS-ALIVE on a given NS-VC. More...

int	gprs_ns_tx_alive_ack (struct gprs_nsvc *nsvc)
	Transmit a NS-ALIVE-ACK on a given NS-VC. More...

static void	nsvc_start_timer (struct gprs_nsvc *nsvc, enum nsvc_timer_mode mode)

static int	nsvc_timer_elapsed_ms (struct gprs_nsvc *nsvc)

static int	gprs_ns_tx_reset_ack (struct gprs_nsvc *nsvc)

int	gprs_ns_tx_sns_ack (struct gprs_nsvc nsvc, uint8_t trans_id, uint8_t cause, const struct gprs_ns_ie_ip4_elem *ip4_elems, unsigned int num_ip4_elems)
	Encode + Transmit a SNS-ACK as per Section 9.3.1. More...

int	gprs_ns_tx_sns_config (struct gprs_nsvc nsvc, bool end_flag, const struct gprs_ns_ie_ip4_elem ip4_elems, unsigned int num_ip4_elems)
	Encode + Transmit a SNS-CONFIG as per Section 9.3.4. More...

int	gprs_ns_tx_sns_config_ack (struct gprs_nsvc nsvc, uint8_t cause)
	Encode + Transmit a SNS-CONFIG-ACK as per Section 9.3.5. More...

int	gprs_ns_tx_sns_size (struct gprs_nsvc nsvc, bool reset_flag, uint16_t max_nr_nsvc, uint16_t ip4_ep_nr, uint16_t *ip6_ep_nr)
	Encode + transmit a SNS-SIZE as per Section 9.3.7. More...

int	gprs_ns_tx_sns_size_ack (struct gprs_nsvc nsvc, uint8_t cause)
	Encode + Transmit a SNS-SIZE-ACK as per Section 9.3.8. More...

int	gprs_ns_sendmsg (struct gprs_ns_inst nsi, struct msgb msg)
	High-level function for transmitting a NS-UNITDATA messsage. More...

static int	gprs_ns_rx_unitdata (struct gprs_nsvc nsvc, struct msgb msg)

static int	gprs_ns_rx_status (struct gprs_nsvc nsvc, struct msgb msg)

static int	gprs_nsvc_replace_if_found (uint16_t nsvci, struct gprs_nsvc nsvc, struct gprs_nsvc old_nsvc)

static int	gprs_ns_rx_reset (struct gprs_nsvc *nsvc, struct msgb msg)

static int	gprs_ns_rx_reset_ack (struct gprs_nsvc *nsvc, struct msgb msg)

static int	gprs_ns_rx_block (struct gprs_nsvc nsvc, struct msgb msg)

int	gprs_ns_vc_create (struct gprs_ns_inst nsi, struct msgb msg, struct gprs_nsvc fallback_nsvc, struct gprs_nsvc *new_nsvc)
	Create/get NS-VC independently from underlying transport layer. More...

int	gprs_ns_process_msg (struct gprs_ns_inst nsi, struct msgb msg, struct gprs_nsvc **nsvc)
	Process NS message independently from underlying transport layer. More...

int	gprs_ns_rcvmsg (struct gprs_ns_inst nsi, struct msgb msg, struct sockaddr_in *saddr, enum gprs_ns_ll ll)
	Receive incoming NS message from underlying transport layer. More...

char *	gprs_ns_ll_str_buf (char buf, size_t buf_len, const struct gprs_nsvc nsvc)

const char *	gprs_ns_ll_str (const struct gprs_nsvc *nsvc)

char *	gprs_ns_ll_str_c (const void ctx, const struct gprs_nsvc nsvc)

void	gprs_ns_ll_copy (struct gprs_nsvc nsvc, struct gprs_nsvc other)

void	gprs_ns_ll_clear (struct gprs_nsvc *nsvc)

struct gprs_ns_inst *	gprs_ns_instantiate (gprs_ns_cb_t cb, void ctx)
	Create a new GPRS NS instance. More...

void	gprs_ns_close (struct gprs_ns_inst *nsi)

void	gprs_ns_destroy (struct gprs_ns_inst *nsi)
	Destroy an entire NS instance. More...

static struct msgb *	read_nsip_msg (struct osmo_fd bfd, int error, struct sockaddr_in *saddr)

static int	handle_nsip_read (struct osmo_fd *bfd)

static int	handle_nsip_write (struct osmo_fd *bfd)

static int	nsip_fd_cb (struct osmo_fd *bfd, unsigned int what)

int	gprs_ns_nsip_listen (struct gprs_ns_inst *nsi)
	Create a listening socket for GPRS NS/UDP/IP. More...

int	gprs_nsvc_reset (struct gprs_nsvc *nsvc, uint8_t cause)
	Initiate a RESET procedure. More...

struct gprs_nsvc *	gprs_ns_nsip_connect (struct gprs_ns_inst nsi, struct sockaddr_in dest, uint16_t nsei, uint16_t nsvci)
	Establish a NS connection (from the BSS) to the SGSN. More...

struct gprs_nsvc *	gprs_ns_nsip_connect_sns (struct gprs_ns_inst nsi, struct sockaddr_in dest, uint16_t nsei, uint16_t nsvci)
	Establish a NS connection (from the BSS) to the SGSN using SNS auto-configuration. More...

void	gprs_ns_set_log_ss (int ss)

char *	gprs_nsvc_state_append (char s, struct gprs_nsvc nsvc)
	Append the nsvc state to a talloc string. More...

void	gprs_nsvc_start_test (struct gprs_nsvc *nsvc)
	Start the ALIVE timer procedure in all NS-VCs part of this NS Instance. More...

void	gprs_start_alive_all_nsvcs (struct gprs_ns_inst *nsi)

char *	gprs_ns2_ll_str_buf (char buf, size_t buf_len, struct gprs_ns2_vc nsvc)
	string-format a given NS-VC into a user-supplied buffer. More...

const char *	gprs_ns2_ll_str (struct gprs_ns2_vc *nsvc)
	string-format a given NS-VC to a thread-local static buffer. More...

char *	gprs_ns2_ll_str_c (const void ctx, struct gprs_ns2_vc nsvc)
	string-format a given NS-VC to a dynamically allocated string. More...

const char *	gprs_ns2_nsvc_state_name (struct gprs_ns2_vc *nsvc)
	Return the current state name of a given NS-VC to a thread-local static buffer. More...

static struct gprs_ns2_vc *	ns2_load_sharing_signal (struct gprs_ns2_nse *nse)

static struct gprs_ns2_vc *	ns2_load_sharing_modulo (struct gprs_ns2_nse *nse, uint16_t bvci, uint32_t load_selector)

static struct gprs_ns2_vc *	ns2_load_sharing_weight_modulo (struct gprs_ns2_nse *nse, uint16_t bvci, uint32_t load_selector)

struct gprs_ns2_vc *	ns2_load_sharing_first (struct gprs_ns2_nse *nse)

static struct gprs_ns2_vc *	ns2_load_sharing (struct gprs_ns2_nse *nse, uint16_t bvci, uint32_t link_selector)

int	gprs_ns2_recv_prim (struct gprs_ns2_inst nsi, struct osmo_prim_hdr oph)
	Receive a primitive from the NS User (Gb). More...

void	ns2_prim_status_ind (struct gprs_ns2_nse nse, struct gprs_ns2_vc nsvc, uint16_t bvci, enum gprs_ns2_affecting_cause cause)
	Send a STATUS.ind primitive to the specified NS instance user. More...

struct gprs_ns2_vc *	ns2_vc_alloc (struct gprs_ns2_vc_bind bind, struct gprs_ns2_nse nse, bool initiater, enum gprs_ns2_vc_mode vc_mode, const char *id)
	Allocate a NS-VC within the given bind + NSE. More...

void	gprs_ns2_free_nsvc (struct gprs_ns2_vc *nsvc)
	Destroy/release given NS-VC. More...

void	ns2_free_nsvcs (struct gprs_ns2_nse *nse)

void	gprs_ns2_free_nsvcs (struct gprs_ns2_nse *nse)
	Destroy/release all NS-VC of given NSE. More...

struct msgb *	ns2_msgb_alloc (void)
	Allocate a message buffer for use with the NS2 stack. More...

static int	reject_status_msg (struct msgb orig_msg, struct tlv_parsed tp, struct msgb **reject, enum ns_cause cause)
	Create a status message to be sent over a new connection. More...

struct gprs_ns2_nse *	gprs_ns2_nse_by_nsei (struct gprs_ns2_inst *nsi, uint16_t nsei)
	Resolve a NS Entity based on its NSEI. More...

struct gprs_ns2_vc *	gprs_ns2_nsvc_by_nsvci (struct gprs_ns2_inst *nsi, uint16_t nsvci)
	Resolve a NS-VC Entity based on its NS-VCI. More...

struct gprs_ns2_nse *	gprs_ns2_create_nse2 (struct gprs_ns2_inst *nsi, uint16_t nsei, enum gprs_ns2_ll linklayer, enum gprs_ns2_dialect dialect, bool ip_sns_role_sgsn)
	Create a NS Entity within given NS instance. More...

int	ns2_nse_set_dialect (struct gprs_ns2_nse *nse, enum gprs_ns2_dialect dialect)

struct gprs_ns2_nse *	gprs_ns2_create_nse (struct gprs_ns2_inst *nsi, uint16_t nsei, enum gprs_ns2_ll linklayer, enum gprs_ns2_dialect dialect)
	Create a NS Entity within given NS instance. More...

uint16_t	gprs_ns2_nse_nsei (struct gprs_ns2_nse *nse)
	Return the NSEI. More...

void	gprs_ns2_free_nse (struct gprs_ns2_nse *nse)
	Destroy given NS Entity. More...

void	gprs_ns2_free_nses (struct gprs_ns2_inst *nsi)

static int	ns2_tlv_parse (struct tlv_parsed dec, const uint8_t buf, int buf_len, uint8_t lv_tag, uint8_t lv_tag2)

static enum ns2_cs	ns2_create_vc_sns (struct gprs_ns2_vc_bind bind, const struct osmo_sockaddr remote, struct gprs_ns2_vc **success, uint16_t nsei)

enum ns2_cs	ns2_create_vc (struct gprs_ns2_vc_bind bind, struct msgb msg, const struct osmo_sockaddr remote, const char logname, struct msgb reject, struct gprs_ns2_vc success)
	Create a new NS-VC based on a [received] message. More...

struct gprs_ns2_vc *	gprs_ns2_ip_connect_inactive (struct gprs_ns2_vc_bind bind, const struct osmo_sockaddr remote, struct gprs_ns2_nse *nse, uint16_t nsvci)
	Create, and connect an inactive, new IP-based NS-VC. More...

struct gprs_ns2_vc *	gprs_ns2_ip_connect (struct gprs_ns2_vc_bind bind, const struct osmo_sockaddr remote, struct gprs_ns2_nse *nse, uint16_t nsvci)
	Create, connect and activate a new IP-based NS-VC. More...

struct gprs_ns2_vc *	gprs_ns2_ip_connect2 (struct gprs_ns2_vc_bind bind, const struct osmo_sockaddr remote, uint16_t nsei, uint16_t nsvci, enum gprs_ns2_dialect dialect)
	Create, connect and activate a new IP-based NS-VC. More...

struct gprs_ns2_vc *	gprs_ns2_nsvc_by_sockaddr_nse (struct gprs_ns2_nse nse, const struct osmo_sockaddr sockaddr)
	Find NS-VC for given socket address. More...

int	gprs_ns2_nse_foreach_nsvc (struct gprs_ns2_nse nse, gprs_ns2_foreach_nsvc_cb cb, void cb_data)
	Iterate over all nsvc of a NS Entity and call the callback. More...

int	ns2_recv_vc (struct gprs_ns2_vc nsvc, struct msgb msg)
	Bottom-side entry-point for received NS PDU from the driver/bind. More...

void	ns2_nse_data_sum (struct gprs_ns2_nse *nse)

void	ns2_nse_notify_unblocked (struct gprs_ns2_vc *nsvc, bool unblocked)
	Notify a nse about the change of a NS-VC. More...

struct gprs_ns2_inst *	gprs_ns2_instantiate (void ctx, osmo_prim_cb cb, void cb_data)
	Create a new GPRS NS instance. More...

void	gprs_ns2_free (struct gprs_ns2_inst *nsi)
	Destroy a NS Instance (including all its NSEs, binds, ...). More...

void	gprs_ns2_start_alive_all_nsvcs (struct gprs_ns2_nse *nse)
	Start the NS-ALIVE FSM in all NS-VCs of given NSE. More...

void	gprs_ns2_free_bind (struct gprs_ns2_vc_bind *bind)
	Destroy a given bind. More...

void	gprs_ns2_free_binds (struct gprs_ns2_inst *nsi)

struct gprs_ns2_vc_bind *	gprs_ns2_bind_by_name (struct gprs_ns2_inst nsi, const char name)
	Search for a bind with a unique name. More...

enum gprs_ns2_vc_mode	ns2_dialect_to_vc_mode (enum gprs_ns2_dialect dialect)

static void	add_bind_array (struct gprs_ns2_vc_bind *array, struct gprs_ns2_vc_bind bind, int size)

void	ns2_nse_update_mtu (struct gprs_ns2_nse *nse)

int	ns2_count_transfer_cap (struct gprs_ns2_nse *nse, uint16_t bvci)
	calculate the transfer capabilities for a nse More...

int	ns2_bind_alloc (struct gprs_ns2_inst nsi, const char name, struct gprs_ns2_vc_bind **result)
	common allocation + low-level initialization of a bind. More...

Variables
uint8_t	gprs_ns_hdr::pdu_type
	NS PDU type. More...

uint8_t	gprs_ns_hdr::data [0]
	variable-length payload More...

uint8_t	pdu_type
	NS PDU type. More...

uint8_t	data [0]
	variable-length payload More...

uint32_t	gprs_ns_ie_ip4_elem::ip_addr

uint16_t	gprs_ns_ie_ip4_elem::udp_port

uint8_t	gprs_ns_ie_ip4_elem::sig_weight

uint8_t	gprs_ns_ie_ip4_elem::data_weight

uint32_t	ip_addr

uint16_t	udp_port

uint8_t	sig_weight

uint8_t	data_weight

struct in6_addr	gprs_ns_ie_ip6_elem::ip_addr

uint16_t	gprs_ns_ie_ip6_elem::udp_port

uint8_t	gprs_ns_ie_ip6_elem::sig_weight

uint8_t	gprs_ns_ie_ip6_elem::data_weight

const struct value_string	gprs_ns_pdu_strings []

enum ns_pdu_type	__attribute__

static const struct tlv_definition	ns_att_tlvdef

static const struct rate_ctr_desc	nsvc_ctr_description []

static const struct rate_ctr_group_desc	nsvc_ctrg_desc

static const struct osmo_stat_item_desc	nsvc_stat_description []

static const struct osmo_stat_item_group_desc	nsvc_statg_desc

const struct value_string	gprs_ns_signal_ns_names []

const struct value_string	gprs_ns_pdu_strings []

static const struct value_string	ns_cause_str []

static enum ns_timeout	timer_mode_tout [_NSVC_TIMER_NR]

static const struct value_string	timer_mode_strs []

static bool	gprs_sns_fsm_registered = false

static const struct tlv_definition	ns_att_tlvdef1

static const struct tlv_definition	ns_att_tlvdef2

const struct value_string	gprs_ns2_cause_strs []

static const struct rate_ctr_desc	ns_ctr_description []

static const struct rate_ctr_group_desc	nse_ctrg_desc

static const struct rate_ctr_group_desc	nsvc_ctrg_desc

static const struct osmo_stat_item_desc	nsvc_stat_description []

static const struct osmo_stat_item_group_desc	nsvc_statg_desc

const struct osmo_stat_item_desc	nsbind_stat_description []

static const struct osmo_stat_item_group_desc	nsbind_statg_desc

const struct value_string	gprs_ns2_aff_cause_prim_strs []

const struct value_string	gprs_ns2_prim_strs []

const struct value_string	gprs_ns2_lltype_strs []

enum gsmtap_um_voice_type	__attribute__

Detailed Description

GPRS Networks Service (NS) messages on the Gb interface 3GPP TS 08.16 version 8.0.1 Release 1999 / ETSI TS 101 299 V8.0.1 (2002-05)

Some introduction into NS: NS is used typically on top of frame relay, but in the ip.access world it is encapsulated in UDP packets. It serves as an intermediate shim betwen BSSGP and the underlying medium. It doesn't do much, apart from providing congestion notification and status indication.

Terms:

    NS              Network Service
    NSVC            NS Virtual Connection
    NSEI            NS Entity Identifier
    NSVL            NS Virtual Link
    NSVLI           NS Virtual Link Identifier
    BVC             BSSGP Virtual Connection
    BVCI            BSSGP Virtual Connection Identifier
    NSVCG           NS Virtual Connection Goup
    Blocked         NS-VC cannot be used for user traffic
    Alive           Ability of a NS-VC to provide communication

There can be multiple BSSGP virtual connections over one (group of) NSVC's. BSSGP will therefore identify the BSSGP virtual connection by a BVCI passed down to NS. NS then has to figure out which NSVC's are responsible for this BVCI. Those mappings are administratively configured.

This implementation has the following limitations:

Only one NS-VC for each NSE: No load-sharing function
NSVCI 65535 and 65534 are reserved for internal use
Only UDP is supported as of now, no frame relay support
There are no BLOCK and UNBLOCK timers (yet?)

Some introduction into NS: NS is used typically on top of frame relay, but in the ip.access world it is encapsulated in UDP packets. It serves as an intermediate shim betwen BSSGP and the underlying medium. It doesn't do much, apart from providing congestion notification and status indication.

Terms:

    NS              Network Service
    NSVC            NS Virtual Connection
    NSEI            NS Entity Identifier
    NSVL            NS Virtual Link
    NSVLI           NS Virtual Link Identifier
    BVC             BSSGP Virtual Connection
    BVCI            BSSGP Virtual Connection Identifier
    NSVCG           NS Virtual Connection Goup
    Blocked         NS-VC cannot be used for user traffic
    Alive           Ability of a NS-VC to provide communication

There can be multiple BSSGP virtual connections over one (group of) NSVC's. BSSGP will therefore identify the BSSGP virtual connection by a BVCI passed down to NS. NS then has to figure out which NSVC's are responsible for this BVCI. Those mappings are administratively configured.

This implementation has the following limitations:

NSVCI 65535 and 65534 are reserved for internal use
There are no BLOCK and UNBLOCK timers (yet?)

Macro Definition Documentation

◆ CHECK_TX_RC

#define CHECK_TX_RC	(	rc,
		nsvc
	)

Value:

                if (rc < 0)                                                     \
                        LOGP(DNS, LOGL_ERROR, "TX failed (%d) to peer %s\n",    \
                                rc, gprs_ns_ll_str(nsvc));

◆ ERR_IF_NSVC_USES_SNS

#define ERR_IF_NSVC_USES_SNS	(	nsvc,
		reason
	)

Value:

        do {                                                                                    \
                if ((nsvc)->nsi->bss_sns_fi) {                                                  \
                        LOGP(DNS, LOGL_ERROR, "NSEI=%u Asked to %s. Rejected on IP-SNS\n",      \
                                nsvc->nsei, reason);                                            \
                        osmo_log_backtrace(DNS, LOGL_ERROR);                                    \
                        return -EIO;                                                            \
                }                                                                               \
        } while (0)

◆ NS2_LL_MAX_STR

#define NS2_LL_MAX_STR 4+2*(INET6_ADDRSTRLEN+9)+8

◆ ns_mark_alive [1/2]

#define ns_mark_alive ( ns_ ) ns_set_state(ns_, (ns_)->state | NSE_S_ALIVE)

◆ ns_mark_alive [2/2]

#define ns_mark_alive ( ns_ ) ns_set_state(ns_, (ns_)->state | NSE_S_ALIVE)

◆ ns_mark_blocked [1/2]

#define ns_mark_blocked ( ns_ ) ns_set_state(ns_, (ns_)->state | NSE_S_BLOCKED)

◆ ns_mark_blocked [2/2]

#define ns_mark_blocked ( ns_ ) ns_set_state(ns_, (ns_)->state | NSE_S_BLOCKED)

◆ ns_mark_dead [1/2]

#define ns_mark_dead ( ns_ ) ns_set_state(ns_, (ns_)->state & (~NSE_S_ALIVE));

◆ ns_mark_dead [2/2]

#define ns_mark_dead ( ns_ ) ns_set_state(ns_, (ns_)->state & (~NSE_S_ALIVE));

◆ ns_mark_unblocked [1/2]

#define ns_mark_unblocked ( ns_ ) ns_set_state(ns_, (ns_)->state & (~NSE_S_BLOCKED));

◆ ns_mark_unblocked [2/2]

#define ns_mark_unblocked ( ns_ ) ns_set_state(ns_, (ns_)->state & (~NSE_S_BLOCKED));

◆ ns_set_remote_state [1/2]

#define ns_set_remote_state	(	ns_,
		st_
	)	ns_set_state_with_log(ns_, st_, true, __FILE__, __LINE__)

◆ ns_set_remote_state [2/2]

#define ns_set_remote_state	(	ns_,
		st_
	)	ns_set_state_with_log(ns_, st_, true, __FILE__, __LINE__)

◆ ns_set_state [1/2]

#define ns_set_state	(	ns_,
		st_
	)	ns_set_state_with_log(ns_, st_, false, __FILE__, __LINE__)

◆ ns_set_state [2/2]

#define ns_set_state	(	ns_,
		st_
	)	ns_set_state_with_log(ns_, st_, false, __FILE__, __LINE__)

Enumeration Type Documentation

◆ ns_cause

enum ns_cause

NS Cause (TS 08.16, Section 10.3.2, Table 13)

Enumerator
NS_CAUSE_TRANSIT_FAIL
NS_CAUSE_OM_INTERVENTION
NS_CAUSE_EQUIP_FAIL
NS_CAUSE_NSVC_BLOCKED
NS_CAUSE_NSVC_UNKNOWN
NS_CAUSE_BVCI_UNKNOWN
NS_CAUSE_SEM_INCORR_PDU
NS_CAUSE_PDU_INCOMP_PSTATE
NS_CAUSE_PROTO_ERR_UNSPEC
NS_CAUSE_INVAL_ESSENT_IE
NS_CAUSE_MISSING_ESSENT_IE
NS_CAUSE_INVAL_NR_IPv4_EP
NS_CAUSE_INVAL_NR_IPv6_EP
NS_CAUSE_INVAL_NR_NS_VC
NS_CAUSE_INVAL_WEIGH
NS_CAUSE_UNKN_IP_EP
NS_CAUSE_UNKN_IP_ADDR
NS_CAUSE_UNKN_IP_TEST_FAILED

◆ ns_ctr

enum ns_ctr

Enumerator
NS_CTR_PKTS_IN
NS_CTR_PKTS_OUT
NS_CTR_BYTES_IN
NS_CTR_BYTES_OUT
NS_CTR_BLOCKED
NS_CTR_DEAD
NS_CTR_REPLACED
NS_CTR_NSEI_CHG
NS_CTR_INV_VCI
NS_CTR_INV_NSEI
NS_CTR_LOST_ALIVE
NS_CTR_LOST_RESET
NS_CTR_PKTS_IN
NS_CTR_PKTS_OUT
NS_CTR_PKTS_OUT_DROP
NS_CTR_BYTES_IN
NS_CTR_BYTES_OUT
NS_CTR_BYTES_OUT_DROP
NS_CTR_BLOCKED
NS_CTR_UNBLOCKED
NS_CTR_DEAD
NS_CTR_REPLACED
NS_CTR_NSEI_CHG
NS_CTR_INV_VCI
NS_CTR_INV_NSEI
NS_CTR_LOST_ALIVE
NS_CTR_LOST_RESET

◆ ns_ctrl_ie

enum ns_ctrl_ie

NS Control IE (TS 08.16, Section 10.3, Table 12)

Enumerator
NS_IE_CAUSE
NS_IE_VCI
NS_IE_PDU
NS_IE_BVCI
NS_IE_NSEI
NS_IE_IPv4_LIST
NS_IE_IPv6_LIST
NS_IE_MAX_NR_NSVC
NS_IE_IPv4_EP_NR
NS_IE_IPv6_EP_NR
NS_IE_RESET_FLAG
NS_IE_IP_ADDR
NS_IE_TRANS_ID

◆ ns_pdu_type

enum ns_pdu_type

NS PDU Type (TS 08.16, Section 10.3.7, Table 14)

Enumerator
NS_PDUT_UNITDATA
NS_PDUT_RESET
NS_PDUT_RESET_ACK
NS_PDUT_BLOCK
NS_PDUT_BLOCK_ACK
NS_PDUT_UNBLOCK
NS_PDUT_UNBLOCK_ACK
NS_PDUT_STATUS
NS_PDUT_ALIVE
NS_PDUT_ALIVE_ACK
SNS_PDUT_ACK
SNS_PDUT_ADD
SNS_PDUT_CHANGE_WEIGHT
SNS_PDUT_CONFIG
SNS_PDUT_CONFIG_ACK
SNS_PDUT_DELETE
SNS_PDUT_SIZE
SNS_PDUT_SIZE_ACK

◆ ns_stat

enum ns_stat

Enumerator
NS_STAT_ALIVE_DELAY

Function Documentation

◆ attribute()

struct gprs_ns_hdr __attribute__ ( (packed) )

◆ add_bind_array()

static void add_bind_array	(	struct gprs_ns2_vc_bind **	array,
		struct gprs_ns2_vc_bind *	bind,
		int	size
	)

static

Referenced by ns2_count_transfer_cap().

◆ gprs_active_nsvc_by_nsei()

static struct gprs_nsvc * gprs_active_nsvc_by_nsei	(	struct gprs_ns_inst *	nsi,
		uint16_t	nsei,
		uint16_t	bvci
	)

static

Determine active NS-VC for given NSEI + BVCI.

Use this function to determine which of the NS-VCs inside the NS Instance shall be used to transmit data for given NSEI + BVCI

References bvci, gprs_nsvc::data_weight, gprs_ns_inst::gprs_nsvcs, list, llist_for_each_entry, NSE_S_ALIVE, NSE_S_BLOCKED, nsei, gprs_nsvc::nsei, gprs_nsvc::nsi, gprs_nsvc::sig_weight, and gprs_nsvc::state.

Referenced by gprs_ns_sendmsg().

◆ gprs_ns2_bind_by_name()

struct gprs_ns2_vc_bind * gprs_ns2_bind_by_name	(	struct gprs_ns2_inst *	nsi,
		const char *	name
	)

Search for a bind with a unique name.

Parameters

[in]	nsi	NS instance on which we operate
[in]	name	The unique bind name to search for

Returns: the bind or NULL if not found

References gprs_ns2_inst::binding, list, llist_for_each_entry, name, gprs_ns2_vc_bind::name, and gprs_ns2_vc_bind::nsi.

Referenced by config_write_vbind(), DEFUN(), gprs_ns2_fr_bind(), gprs_ns2_frgre_bind(), ns2_bind_alloc(), ns2_sns_add_sns_default_binds(), and ns_nse_nsvc_udp_cmds().

◆ gprs_ns2_create_nse()

struct gprs_ns2_nse * gprs_ns2_create_nse	(	struct gprs_ns2_inst *	nsi,
		uint16_t	nsei,
		enum gprs_ns2_ll	linklayer,
		enum gprs_ns2_dialect	dialect
	)

Create a NS Entity within given NS instance.

Parameters

[in]	nsi	NS instance in which to create NS Entity
[in]	nsei	NS Entity Identifier of to-be-created NSE

Returns: newly-allocated NS-E in successful case; NULL on error

References gprs_ns2_nse::dialect, gprs_ns2_create_nse2(), nsei, and gprs_ns2_nse::nsi.

Referenced by gprs_ns2_fr_connect2(), gprs_ns2_ip_connect2(), and ns2_create_vc().

◆ gprs_ns2_create_nse2()

struct gprs_ns2_nse * gprs_ns2_create_nse2	(	struct gprs_ns2_inst *	nsi,
		uint16_t	nsei,
		enum gprs_ns2_ll	linklayer,
		enum gprs_ns2_dialect	dialect,
		bool	ip_sns_role_sgsn
	)

Create a NS Entity within given NS instance.

Parameters

[in]	nsi	NS instance in which to create NS Entity
[in]	nsei	NS Entity Identifier of to-be-created NSE
[in]	ip_sns_role_sgsn	Does local side implement SGSN role?

Returns: newly-allocated NS-E in successful case; NULL on error

References gprs_ns2_nse::ctrg, gprs_ns2_nse::dialect, gprs_ns2_nse::first, GPRS_NS2_DIALECT_UNDEF, gprs_ns2_nse_by_nsei(), INIT_LLIST_HEAD, gprs_ns2_nse::ip_sns_role_sgsn, gprs_ns2_nse::list, gprs_ns2_nse::ll, llist_add_tail(), LOGL_ERROR, LOGNSE, gprs_ns2_nse::mtu, ns2_nse_set_dialect(), gprs_ns2_inst::nse, nse_ctrg_desc, nsei, gprs_ns2_nse::nsei, gprs_ns2_nse::nsi, gprs_ns2_nse::nsvc, osmo_clock_gettime(), rate_ctr_group_alloc(), and gprs_ns2_nse::ts_alive_change.

Referenced by DEFUN(), gprs_ns2_create_nse(), and ns2_create_vc_sns().

◆ gprs_ns2_free()

void gprs_ns2_free ( struct gprs_ns2_inst * nsi )

Destroy a NS Instance (including all its NSEs, binds, ...).

Parameters

[in] nsi NS instance to destroy

References gprs_ns2_free_binds(), and gprs_ns2_free_nses().

◆ gprs_ns2_free_bind()

void gprs_ns2_free_bind ( struct gprs_ns2_vc_bind * bind )

Destroy a given bind.

Parameters

[in] bind the bind we want to destroy

References gprs_ns2_vc_bind::driver, gprs_ns2_vc_driver::free_bind, gprs_ns2_vc_bind::freed, gprs_ns2_free_nsvc(), gprs_ns2_is_ip_bind(), gprs_ns2_sns_del_bind(), list, gprs_ns2_vc_bind::list, llist_del(), llist_empty(), llist_first_entry, llist_for_each_entry, gprs_ns2_vc_bind::name, gprs_ns2_inst::nse, gprs_ns2_vc_bind::nsi, gprs_ns2_nse::nsvc, gprs_ns2_vc_bind::nsvc, osmo_stat_item_group_free(), and gprs_ns2_vc_bind::statg.

Referenced by DEFUN(), gprs_ns2_fr_bind(), gprs_ns2_free_binds(), gprs_ns2_frgre_bind(), and gprs_ns2_ip_bind().

◆ gprs_ns2_free_binds()

void gprs_ns2_free_binds ( struct gprs_ns2_inst * nsi )

References gprs_ns2_inst::binding, gprs_ns2_free_bind(), list, llist_empty(), llist_first_entry, and gprs_ns2_vc_bind::nsi.

Referenced by gprs_ns2_free().

◆ gprs_ns2_free_nse()

void gprs_ns2_free_nse ( struct gprs_ns2_nse * nse )

Destroy given NS Entity.

Parameters

[in] nse NS Entity to destroy

References gprs_ns2_nse::alive, gprs_ns2_nse::bss_sns_fi, gprs_ns2_nse::ctrg, gprs_ns2_nse::freed, GPRS_NS2_AFF_CAUSE_FAILURE, gprs_ns2_free_nsvcs(), gprs_ns2_nse::list, llist_del(), ns2_free_nsvcs(), ns2_prim_status_ind(), osmo_fsm_inst_term, OSMO_FSM_TERM_REQUEST, and rate_ctr_group_free().

Referenced by _sns_failed(), DEFUN(), DEFUN_HIDDEN(), gprs_ns2_fr_connect2(), and gprs_ns2_free_nses().

◆ gprs_ns2_free_nses()

void gprs_ns2_free_nses ( struct gprs_ns2_inst * nsi )

References gprs_ns2_free_nse(), list, llist_empty(), llist_first_entry, gprs_ns2_inst::nse, and gprs_ns2_nse::nsi.

Referenced by gprs_ns2_free().

◆ gprs_ns2_free_nsvc()

void gprs_ns2_free_nsvc ( struct gprs_ns2_vc * nsvc )

Destroy/release given NS-VC.

Parameters

[in] nsvc NS-VC to destroy

References gprs_ns2_vc::bind, gprs_ns2_vc::blist, gprs_ns2_vc::ctrg, gprs_ns2_vc::fi, gprs_ns2_vc_bind::free_vc, gprs_ns2_vc::freed, GPRS_NS2_AFF_CAUSE_VC_FAILURE, gprs_ns2_vc::list, llist_del(), ns2_nse_notify_unblocked(), ns2_prim_status_ind(), ns2_sns_replace_nsvc(), gprs_ns2_vc::nse, osmo_fsm_inst_term, OSMO_FSM_TERM_REQUEST, osmo_stat_item_group_free(), gprs_ns2_vc::priv, rate_ctr_group_free(), and gprs_ns2_vc::statg.

Referenced by DEFUN(), do_sns_delete(), gprs_ns2_fr_connect(), gprs_ns2_free_bind(), ns2_clear_sgsn(), ns2_create_vc(), ns2_free_nsvcs(), ns2_ip_bind_connect(), ns2_sns_st_all_action(), and ns2_sns_st_configured_onenter().

◆ gprs_ns2_free_nsvcs()

void gprs_ns2_free_nsvcs ( struct gprs_ns2_nse * nse )

Destroy/release all NS-VC of given NSE.

Parameters

[in] nse NSE

References gprs_ns2_nse::bss_sns_fi, gprs_ns2_nse::freed, ns2_free_nsvcs(), NS2_SNS_EV_REQ_FREE_NSVCS, gprs_ns2_vc::nse, and osmo_fsm_inst_dispatch.

Referenced by DEFUN(), DEFUN_HIDDEN(), gprs_ns2_free_nse(), and gprs_ns2_sns_del_endpoint().

◆ gprs_ns2_instantiate()

struct gprs_ns2_inst * gprs_ns2_instantiate	(	void *	ctx,
		osmo_prim_cb	cb,
		void *	cb_data
	)

Create a new GPRS NS instance.

Parameters

[in]	ctx	a talloc context to allocate NS instance from
[in]	cb	Call-back function for dispatching primitives to the user. The Call-back must free all msgb* given in the primitive.
[in]	cb_data	transparent user data passed to Call-back

Returns: dynamically allocated gprs_ns_inst; NULL on error

References gprs_ns2_inst::binding, gprs_ns2_inst::cb, gprs_ns2_inst::cb_data, INIT_LLIST_HEAD, NS_DEFAULT_TXQUEUE_MAX_LENGTH, NS_TOUT_TNS_ALIVE, NS_TOUT_TNS_ALIVE_RETRIES, NS_TOUT_TNS_BLOCK, NS_TOUT_TNS_BLOCK_RETRIES, NS_TOUT_TNS_RESET, NS_TOUT_TNS_RESET_RETRIES, NS_TOUT_TNS_TEST, NS_TOUT_TSNS_CONFIG_RETRIES, NS_TOUT_TSNS_PROCEDURES_RETRIES, NS_TOUT_TSNS_PROV, NS_TOUT_TSNS_SIZE_RETRIES, gprs_ns2_inst::nse, gprs_ns2_inst::timeout, and gprs_ns2_inst::txqueue_max_length.

◆ gprs_ns2_ip_connect()

struct gprs_ns2_vc * gprs_ns2_ip_connect	(	struct gprs_ns2_vc_bind *	bind,
		const struct osmo_sockaddr *	remote,
		struct gprs_ns2_nse *	nse,
		uint16_t	nsvci
	)

Create, connect and activate a new IP-based NS-VC.

Parameters

[in]	bind	bind in which the new NS-VC is to be created
[in]	remote	remote address to which to connect
[in]	nse	NS Entity in which the NS-VC is to be created
[in]	nsvci	is only required when bind->vc_mode == NS2_VC_MODE_BLOCKRESET

Returns: pointer to newly-allocated, connected and activated NS-VC; NULL on error

References gprs_ns2_vc::bind, gprs_ns2_ip_connect_inactive(), ns2_vc_fsm_start(), gprs_ns2_vc::nse, and gprs_ns2_vc::nsvci.

Referenced by DEFUN(), gprs_ns2_ip_connect2(), and ns_nse_nsvc_udp_cmds().

◆ gprs_ns2_ip_connect2()

struct gprs_ns2_vc * gprs_ns2_ip_connect2	(	struct gprs_ns2_vc_bind *	bind,
		const struct osmo_sockaddr *	remote,
		uint16_t	nsei,
		uint16_t	nsvci,
		enum gprs_ns2_dialect	dialect
	)

Create, connect and activate a new IP-based NS-VC.

Parameters

[in]	bind	bind in which the new NS-VC is to be created
[in]	remote	remote address to which to connect
[in]	nsei	NSEI of the NS Entity in which the NS-VC is to be created
[in]	nsvci	is only required when bind->vc_mode == NS2_VC_MODE_BLOCKRESET

Returns: pointer to newly-allocated, connected and activated NS-VC; NULL on error

References gprs_ns2_nse::dialect, gprs_ns2_create_nse(), gprs_ns2_ip_connect(), GPRS_NS2_LL_UDP, gprs_ns2_nse_by_nsei(), nsei, and gprs_ns2_vc_bind::nsi.

◆ gprs_ns2_ip_connect_inactive()

struct gprs_ns2_vc * gprs_ns2_ip_connect_inactive	(	struct gprs_ns2_vc_bind *	bind,
		const struct osmo_sockaddr *	remote,
		struct gprs_ns2_nse *	nse,
		uint16_t	nsvci
	)

Create, and connect an inactive, new IP-based NS-VC.

Parameters

[in]	bind	bind in which the new NS-VC is to be created
[in]	remote	remote address to which to connect
[in]	nse	NS Entity in which the NS-VC is to be created
[in]	nsvci	is only required when bind->vc_mode == NS2_VC_MODE_BLOCKRESET

Returns: pointer to newly-allocated, connected and inactive NS-VC; NULL on error

References gprs_ns2_vc::bind, GPRS_NS2_VC_MODE_BLOCKRESET, gprs_ns2_vc::mode, ns2_ip_bind_connect(), gprs_ns2_vc::nse, gprs_ns2_vc::nsvci, and gprs_ns2_vc::nsvci_is_valid.

Referenced by create_missing_nsvcs(), create_nsvc_for_new_sbind(), gprs_ns2_ip_connect(), and ns2_vc_create_ip().

◆ gprs_ns2_ll_str()

const char * gprs_ns2_ll_str ( struct gprs_ns2_vc * nsvc )

string-format a given NS-VC to a thread-local static buffer.

Parameters

[in] nsvc NS-VC to be string-formatted

Returns: pointer to the string on success; NULL on error

References gprs_ns2_ll_str_buf(), and NS2_LL_MAX_STR.

Referenced by do_sns_change_weight(), do_sns_delete(), and ns2_vty_dump_nsvc().

◆ gprs_ns2_ll_str_buf()

char * gprs_ns2_ll_str_buf	(	char *	buf,
		size_t	buf_len,
		struct gprs_ns2_vc *	nsvc
	)

string-format a given NS-VC into a user-supplied buffer.

Parameters

[in]	buf	user-allocated output buffer
[in]	buf_len	size of user-allocated output buffer in bytes
[in]	nsvc	NS-VC to be string-formatted

Returns: pointer to buf on success; NULL on error

References gprs_ns2_vc::bind, gprs_ns2_fr_bind_netif(), gprs_ns2_fr_nsvc_dlci(), gprs_ns2_ip_bind_sockaddr(), gprs_ns2_ip_vc_remote(), gprs_ns2_is_ip_bind(), GPRS_NS2_LL_FR, GPRS_NS2_LL_FR_GRE, GPRS_NS2_LL_UDP, osmo_sockaddr_str::ip, gprs_ns2_nse::ll, gprs_ns2_vc::nse, gprs_ns2_vc::nsvci, gprs_ns2_vc::nsvci_is_valid, osmo_sockaddr_str_from_sockaddr(), osmo_sockaddr_str::port, osmo_sockaddr::sas, and osmo_sockaddr::u.

Referenced by gprs_ns2_ll_str(), gprs_ns2_ll_str_c(), and ns2_prim_status_ind().

◆ gprs_ns2_ll_str_c()

char * gprs_ns2_ll_str_c	(	const void *	ctx,
		struct gprs_ns2_vc *	nsvc
	)

string-format a given NS-VC to a dynamically allocated string.

Parameters

[in]	ctx	talloc context from which to allocate
[in]	nsvc	NS-VC to be string-formatted

Returns: pointer to the string on success; NULL on error

References gprs_ns2_ll_str_buf(), and NS2_LL_MAX_STR.

◆ gprs_ns2_nse_by_nsei()

struct gprs_ns2_nse * gprs_ns2_nse_by_nsei	(	struct gprs_ns2_inst *	nsi,
		uint16_t	nsei
	)

Resolve a NS Entity based on its NSEI.

Parameters

[in]	nsi	NS Instance in which we do the look-up
[in]	nsei	NSEI to look up

Returns: NS Entity in successful case; NULL if none found

References list, llist_for_each_entry, gprs_ns2_inst::nse, nsei, gprs_ns2_nse::nsei, and gprs_ns2_nse::nsi.

Referenced by DEFUN(), DEFUN_HIDDEN(), gprs_ns2_create_nse2(), gprs_ns2_fr_connect2(), gprs_ns2_ip_connect2(), gprs_ns2_recv_prim(), ns2_create_vc(), ns2_create_vc_sns(), and ns2_nse_notify_unblocked().

◆ gprs_ns2_nse_foreach_nsvc()

int gprs_ns2_nse_foreach_nsvc	(	struct gprs_ns2_nse *	nse,
		gprs_ns2_foreach_nsvc_cb	cb,
		void *	cb_data
	)

Iterate over all nsvc of a NS Entity and call the callback.

If the callback returns < 0 it aborts the loop and returns the callback return code.

Parameters

[in]	nse	NS Entity to iterate over all nsvcs
[in]	cb	the callback to call
[in,out]	cb_data	the private data of the callback

Returns: 0 if the loop completes. If a callback returns < 0 it will returns this value.

References list, llist_for_each_entry_safe, gprs_ns2_vc::nse, and gprs_ns2_nse::nsvc.

Referenced by DEFUN_HIDDEN().

◆ gprs_ns2_nse_nsei()

uint16_t gprs_ns2_nse_nsei ( struct gprs_ns2_nse * nse )

Return the NSEI.

Parameters

[in] nse NS Entity

Returns: the nsei.

References gprs_ns2_nse::nsei.

◆ gprs_ns2_nsvc_by_nsvci()

struct gprs_ns2_vc * gprs_ns2_nsvc_by_nsvci	(	struct gprs_ns2_inst *	nsi,
		uint16_t	nsvci
	)

Resolve a NS-VC Entity based on its NS-VCI.

Parameters

[in]	nsi	NS Instance in which we do the look-up
[in]	nsvci	NS-VCI to look up

Returns: NS-VC Entity in successful case; NULL if none found

References list, llist_for_each_entry, gprs_ns2_inst::nse, gprs_ns2_vc::nse, gprs_ns2_nse::nsvc, gprs_ns2_vc::nsvci, and gprs_ns2_vc::nsvci_is_valid.

Referenced by DEFUN(), ns2_create_vc(), and ns2_vc_rx().

◆ gprs_ns2_nsvc_by_sockaddr_nse()

struct gprs_ns2_vc * gprs_ns2_nsvc_by_sockaddr_nse	(	struct gprs_ns2_nse *	nse,
		const struct osmo_sockaddr *	sockaddr
	)

Find NS-VC for given socket address.

Parameters

[in]	nse	NS Entity in which to search
[in]	sockaddr	socket address to search for

Returns: NS-VC matching sockaddr; NULL if none found

References gprs_ns2_ip_vc_remote(), list, llist_for_each_entry, gprs_ns2_nse::nsvc, OSMO_ASSERT, and osmo_sockaddr_cmp().

Referenced by nsvc_by_ip4_elem(), and nsvc_by_ip6_elem().

◆ gprs_ns2_nsvc_state_name()

const char * gprs_ns2_nsvc_state_name ( struct gprs_ns2_vc * nsvc )

Return the current state name of a given NS-VC to a thread-local static buffer.

Parameters

[in] nsvc NS-VC to return the state of

Returns: pointer to the string on success; NULL on error

References gprs_ns2_vc::fi, and osmo_fsm_inst_state_name().

◆ gprs_ns2_recv_prim()

int gprs_ns2_recv_prim	(	struct gprs_ns2_inst *	nsi,
		struct osmo_prim_hdr *	oph
	)

Receive a primitive from the NS User (Gb).

Parameters

[in]	nsi	NS instance to which the primitive is issued
[in]	oph	The primitive

Returns: 0 on success; negative on error

References gprs_ns2_nse::alive, bvci, osmo_gprs_ns2_prim::bvci, osmo_gprs_ns2_prim::change, container_of, GPRS_NS2_ENDPOINT_CONFIRM_CHANGE, GPRS_NS2_ENDPOINT_REQUEST_CHANGE, gprs_ns2_nse_by_nsei(), GPRS_NS2_PRIM_UNIT_DATA, osmo_gprs_ns2_prim::link_selector, osmo_prim_hdr::msg, msgb_free(), ns2_load_sharing(), ns2_tx_unit_data(), gprs_ns2_vc::nse, nsei, osmo_gprs_ns2_prim::nsei, osmo_prim_hdr::operation, PRIM_OP_REQUEST, osmo_prim_hdr::primitive, osmo_prim_hdr::sap, SAP_NS, osmo_gprs_ns2_prim::u, and osmo_gprs_ns2_prim::unitdata.

Referenced by bssgp2_nsi_tx_ptp().

◆ gprs_ns2_start_alive_all_nsvcs()

void gprs_ns2_start_alive_all_nsvcs ( struct gprs_ns2_nse * nse )

Start the NS-ALIVE FSM in all NS-VCs of given NSE.

Parameters

[in] nse NS Entity in whihc to start NS-ALIVE FSMs

References list, llist_for_each_entry, ns2_vc_fsm_start(), gprs_ns2_vc::nse, gprs_ns2_nse::nsvc, OSMO_ASSERT, and gprs_ns2_vc::sns_only.

Referenced by do_sns_add(), ns2_sns_st_bss_config_sgsn(), ns2_sns_st_local_procedure(), and ns2_sns_st_sgsn_wait_config_ack().

◆ gprs_ns_cause_str()

const char * gprs_ns_cause_str ( enum ns_cause cause )

Obtain a human-readable string for NS cause value.

References cause, get_value_string(), and ns_cause_str.

Referenced by gprs_ns_rx_reset(), gprs_ns_rx_status(), gprs_ns_tx_block(), gprs_ns_tx_reset(), gprs_ns_tx_status(), gprs_sns_st_config_bss(), and gprs_sns_st_size().

◆ gprs_ns_close()

void gprs_ns_close ( struct gprs_ns_inst * nsi )

References osmo_fd::data, osmo_fd::fd, gprs_ns_inst::fd, gprs_nsvc_delete(), gprs_ns_inst::gprs_nsvcs, list, llist_for_each_entry_safe, gprs_nsvc::nsi, gprs_ns_inst::nsip, osmo_fd_unregister(), and gprs_ns_inst::unknown_nsvc.

Referenced by gprs_ns_destroy().

◆ gprs_ns_destroy()

void gprs_ns_destroy ( struct gprs_ns_inst * nsi )

Destroy an entire NS instance.

Parameters

nsi	gprs_ns_inst that is to be destroyed

This function releases all resources associated with the NS-instance.

References gprs_ns_close(), and gprs_nsvc::nsi.

◆ gprs_ns_instantiate()

struct gprs_ns_inst * gprs_ns_instantiate	(	gprs_ns_cb_t *	cb,
		void *	ctx
	)

Create a new GPRS NS instance.

Parameters

[in] cb Call-back function for incoming BSSGP data

Returns: dynamically allocated gprs_ns_inst

References gprs_ns_inst::cb, gprs_nsvc_create2(), gprs_ns_inst::gprs_nsvcs, gprs_sns_fsm_registered, gprs_sns_init(), INIT_LLIST_HEAD, gprs_nsvc::list, llist_del(), NS_TOUT_TNS_ALIVE, NS_TOUT_TNS_ALIVE_RETRIES, NS_TOUT_TNS_BLOCK, NS_TOUT_TNS_BLOCK_RETRIES, NS_TOUT_TNS_RESET, NS_TOUT_TNS_RESET_RETRIES, NS_TOUT_TNS_TEST, NS_TOUT_TSNS_PROV, gprs_ns_inst::nsip, gprs_nsvc::nsvci_is_valid, gprs_ns_inst::timeout, gprs_ns_inst::unknown_nsvc, and gprs_ns_inst::use_reset_block_unblock.

◆ gprs_ns_ll_clear()

void gprs_ns_ll_clear ( struct gprs_nsvc * nsvc )

References gprs_nsvc::bts_addr, gprs_nsvc::frgre, GPRS_NS_LL_FR_GRE, GPRS_NS_LL_UDP, gprs_nsvc::ip, and gprs_nsvc::ll.

Referenced by gprs_ns_rx_reset(), and gprs_ns_rx_reset_ack().

◆ gprs_ns_ll_copy()

void gprs_ns_ll_copy	(	struct gprs_nsvc *	nsvc,
		struct gprs_nsvc *	other
	)

References gprs_nsvc::frgre, GPRS_NS_LL_FR_GRE, GPRS_NS_LL_UDP, gprs_nsvc::ip, and gprs_nsvc::ll.

Referenced by gprs_ns_rx_reset(), gprs_ns_rx_reset_ack(), and gprs_ns_vc_create().

◆ gprs_ns_ll_str()

const char * gprs_ns_ll_str ( const struct gprs_nsvc * nsvc )

References gprs_ns_ll_str_buf().

Referenced by create_missing_nsvcs(), do_sns_add(), do_sns_change_weight(), do_sns_delete(), dump_nse(), gprs_ns_rx_reset(), gprs_ns_rx_reset_ack(), gprs_ns_vc_create(), and gprs_nsvc_replace_if_found().

◆ gprs_ns_ll_str_buf()

char * gprs_ns_ll_str_buf	(	char *	buf,
		size_t	buf_len,
		const struct gprs_nsvc *	nsvc
	)

References gprs_nsvc::bts_addr, gprs_nsvc::frgre, GPRS_NS_LL_FR_GRE, GPRS_NS_LL_UDP, gprs_nsvc::ip, gprs_nsvc::ll, and osmo_ntohs.

Referenced by gprs_ns_ll_str(), and gprs_ns_ll_str_c().

◆ gprs_ns_ll_str_c()

char * gprs_ns_ll_str_c	(	const void *	ctx,
		const struct gprs_nsvc *	nsvc
	)

References gprs_ns_ll_str_buf().

◆ gprs_ns_msgb_alloc()

struct msgb * gprs_ns_msgb_alloc ( void )

References DNS, LOGL_ERROR, LOGP, msg, msgb_alloc_headroom(), NS_ALLOC_HEADROOM, and NS_ALLOC_SIZE.

Referenced by gprs_ns_tx_block(), gprs_ns_tx_block_ack(), gprs_ns_tx_reset(), gprs_ns_tx_reset_ack(), gprs_ns_tx_simple(), gprs_ns_tx_sns_ack(), gprs_ns_tx_sns_config(), gprs_ns_tx_sns_config_ack(), gprs_ns_tx_sns_size(), gprs_ns_tx_sns_size_ack(), gprs_ns_tx_status(), and read_nsip_msg().

◆ gprs_ns_nsip_connect()

struct gprs_nsvc * gprs_ns_nsip_connect	(	struct gprs_ns_inst *	nsi,
		struct sockaddr_in *	dest,
		uint16_t	nsei,
		uint16_t	nsvci
	)

Establish a NS connection (from the BSS) to the SGSN.

Parameters

	nsi	NS-instance
[in]	dest	Destination IP/Port
[in]	nsei	NSEI of the to-be-established NS-VC
[in]	nsvci	NSVCI of the to-be-established NS-VC

Returns: struct gprs_nsvc representing the new NS-VC

This function will establish a single NS/UDP/IP connection in uplink (BSS to SGSN) direction.

References gprs_nsvc::bts_addr, gprs_nsvc_by_rem_addr(), gprs_nsvc_create2(), gprs_nsvc_reset(), gprs_nsvc::ip, NS_CAUSE_OM_INTERVENTION, nsei, gprs_nsvc::nsei, gprs_nsvc::nsi, gprs_nsvc::nsvci, and gprs_nsvc::remote_end_is_sgsn.

◆ gprs_ns_nsip_connect_sns()

struct gprs_nsvc * gprs_ns_nsip_connect_sns	(	struct gprs_ns_inst *	nsi,
		struct sockaddr_in *	dest,
		uint16_t	nsei,
		uint16_t	nsvci
	)

Establish a NS connection (from the BSS) to the SGSN using SNS auto-configuration.

Parameters

	nsi	NS-instance
[in]	dest	Destination IP/Port
[in]	nsei	NSEI of the to-be-established NS-VC
[in]	nsvci	NSVCI of the to-be-established NS-VC

Returns: struct gprs_nsvc representing the new NS-VC

This function will establish a single NS/UDP/IP connection in uplink (BSS to SGSN) direction. It will start with the SNS-SIZE procedure, followed by BSS-originated SNS-CONFIG, then SGSN-originated SNS-CONFIG.

Once configuration completes, the user will be notified by the S_SNS_CONFIGURED signal, at which point he typically would want to initiate NS-RESET by means of gprs_nsvc_reset().

References gprs_ns_inst::bss_sns_fi, gprs_nsvc::bts_addr, gprs_nsvc_by_rem_addr(), gprs_nsvc_create2(), gprs_sns_bss_fsm_alloc(), gprs_sns_bss_fsm_start(), gprs_nsvc::ip, ns_set_state, nsei, gprs_nsvc::nsei, gprs_nsvc::nsi, gprs_nsvc::nsvci, osmo_fsm_inst_term, OSMO_FSM_TERM_REQUEST, and gprs_nsvc::remote_end_is_sgsn.

◆ gprs_ns_nsip_listen()

int gprs_ns_nsip_listen ( struct gprs_ns_inst * nsi )

Create a listening socket for GPRS NS/UDP/IP.

Parameters

[in] nsi NS protocol instance to listen

Returns: >=0 (fd) in case of success, negative in case of error

A call to this function will create a UDP socket bound to the port number and IP address specified in the NS protocol instance. The file descriptor of the socket will be stored in nsi->nsip.fd.

References osmo_fd::cb, osmo_fd::data, DNS, gprs_ns_inst::dscp, gprs_ns_inst::fd, gprs_ns_inst::local_ip, gprs_ns_inst::local_port, LOGL_NOTICE, LOGP, gprs_ns_inst::nsip, nsip_fd_cb(), osmo_htonl, OSMO_SOCK_F_BIND, OSMO_SOCK_F_CONNECT, OSMO_SOCK_F_DSCP, osmo_sock_init2_ofd(), osmo_sock_init_ofd(), gprs_ns_inst::remote_ip, and gprs_ns_inst::remote_port.

◆ gprs_ns_process_msg()

int gprs_ns_process_msg	(	struct gprs_ns_inst *	nsi,
		struct msgb *	msg,
		struct gprs_nsvc **	nsvc
	)

Process NS message independently from underlying transport layer.

Parameters

	nsi	NS instance to which the data belongs
[in]	msg	message buffer containing newly-received data
[in,out]	nsvc	refers to the virtual connection, may be modified when processing a NS_RESET

Returns: 0 in case of success, < 0 in case of error

This contains the main NS automaton.

References gprs_ns_inst::bss_sns_fi, gprs_ns_hdr::data, DNS, get_value_string(), gprs_ns_pdu_strings, gprs_ns_rx_block(), gprs_ns_rx_reset(), gprs_ns_rx_reset_ack(), gprs_ns_rx_sns(), gprs_ns_rx_status(), gprs_ns_rx_unitdata(), gprs_ns_tx_alive_ack(), gprs_ns_tx_simple(), gprs_ns_tx_status(), gprs_ns_tx_unblock(), gprs_nsvc_reset(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_INFO, LOGL_NOTICE, LOGP, LOGPC, msg, msgb_hexdump(), msgb_l2len(), msgb_nsei, ns_att_tlvdef, NS_CAUSE_PDU_INCOMP_PSTATE, NS_CAUSE_PROTO_ERR_UNSPEC, NS_CTR_BYTES_IN, NS_CTR_PKTS_IN, NS_IE_NSEI, NS_IE_TRANS_ID, ns_is_sns(), ns_mark_alive, ns_mark_unblocked, ns_osmo_signal_dispatch(), NS_PDUT_ALIVE, NS_PDUT_ALIVE_ACK, NS_PDUT_BLOCK, NS_PDUT_BLOCK_ACK, NS_PDUT_RESET, NS_PDUT_RESET_ACK, NS_PDUT_STATUS, NS_PDUT_UNBLOCK, NS_PDUT_UNBLOCK_ACK, NS_PDUT_UNITDATA, ns_set_remote_state, ns_set_state, NS_STAT_ALIVE_DELAY, NSE_S_ALIVE, NSE_S_BLOCKED, NSE_S_RESET, nsvc_is_not_used(), nsvc_start_timer(), nsvc_timer_elapsed_ms(), NSVC_TIMER_TNS_ALIVE, NSVC_TIMER_TNS_TEST, osmo_stat_item_group_get_item(), osmo_stat_item_set(), gprs_ns_hdr::pdu_type, rate_ctr_add(), rate_ctr_group_get_ctr(), rate_ctr_inc(), S_NS_UNBLOCK, SNS_PDUT_ACK, SNS_PDUT_ADD, SNS_PDUT_CHANGE_WEIGHT, SNS_PDUT_CONFIG, SNS_PDUT_CONFIG_ACK, SNS_PDUT_DELETE, SNS_PDUT_SIZE, SNS_PDUT_SIZE_ACK, and tlv_parse().

Referenced by gprs_ns_rcvmsg().

◆ gprs_ns_rcvmsg()

int gprs_ns_rcvmsg	(	struct gprs_ns_inst *	nsi,
		struct msgb *	msg,
		struct sockaddr_in *	saddr,
		enum gprs_ns_ll	ll
	)

Receive incoming NS message from underlying transport layer.

Parameters

	nsi	NS instance to which the data belongs
[in]	msg	message buffer containing newly-received data
[in]	saddr	socketaddr from which data was received
[in]	ll	link-layer type in which data was received

Returns: 0 in case of success, < 0 in case of error

This is the main entry point int othe NS imlementation where frames from the underlying transport (normally UDP) enter.

References gprs_nsvc::bts_addr, gprs_ns_process_msg(), gprs_ns_vc_create(), gprs_nsvc_by_rem_addr(), gprs_nsvc::ip, gprs_nsvc::ll, LOG_CTX_GB_NSVC, log_set_context(), msg, gprs_nsvc::nsi, and gprs_ns_inst::unknown_nsvc.

Referenced by handle_nsfrgre_read(), and handle_nsip_read().

◆ gprs_ns_rx_block()

static int gprs_ns_rx_block	(	struct gprs_nsvc *	nsvc,
		struct msgb *	msg
	)

static

◆ gprs_ns_rx_reset()

static int gprs_ns_rx_reset	(	struct gprs_nsvc **	nsvc,
		struct msgb *	msg
	)

static

◆ gprs_ns_rx_reset_ack()

static int gprs_ns_rx_reset_ack	(	struct gprs_nsvc **	nsvc,
		struct msgb *	msg
	)

static

◆ gprs_ns_rx_status()

static int gprs_ns_rx_status	(	struct gprs_nsvc *	nsvc,
		struct msgb *	msg
	)

static

References cause, gprs_ns_hdr::data, DNS, gprs_ns_cause_str(), LOGL_ERROR, LOGL_INFO, LOGL_NOTICE, LOGP, LOGPC, msg, msgb_l2len(), ns_att_tlvdef, NS_IE_CAUSE, gprs_nsvc::nsei, tlv_parse(), TLVP_PRESENT, and TLVP_VAL.

Referenced by gprs_ns_process_msg().

◆ gprs_ns_rx_unitdata()

static int gprs_ns_rx_unitdata	(	struct gprs_nsvc *	nsvc,
		struct msgb *	msg
	)

static

References bvci, gprs_ns_inst::cb, gprs_ns_hdr::data, GPRS_NS_EVT_UNIT_DATA, gprs_ns_tx_status(), if(), msg, msgb_bssgph, msgb_bvci, NS_CAUSE_NSVC_BLOCKED, NSE_S_BLOCKED, gprs_nsvc::nsi, and gprs_nsvc::state.

Referenced by gprs_ns_process_msg().

◆ gprs_ns_sendmsg()

int gprs_ns_sendmsg	(	struct gprs_ns_inst *	nsi,
		struct msgb *	msg
	)

High-level function for transmitting a NS-UNITDATA messsage.

Parameters

[in]	nsi	NS-instance on which we shall transmit
[in]	msg	struct msgb to be trasnmitted

This function obtains the NS-VC by the msgb_nsei(msg) and then checks if the NS-VC is ALIVE and not BLOCKED. After that, it adds a NS header for the NS-UNITDATA message type and sends it off.

Section 9.2.10: transmit side / NS-UNITDATA-REQUEST primitive

References bvci, gprs_ns_hdr::data, DNS, gprs_active_nsvc_by_nsei(), gprs_ns_tx(), gprs_nsvc_by_nsei(), if(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_ERROR, LOGP, msg, msgb_bvci, msgb_free(), msgb_nsei, msgb_push(), NS_PDUT_UNITDATA, and gprs_ns_hdr::pdu_type.

Referenced by _gprs_ns_sendmsg().

◆ gprs_ns_set_log_ss()

void gprs_ns_set_log_ss ( int ss )

References DNS.

◆ gprs_ns_timer_cb()

static void gprs_ns_timer_cb ( void * data )

static

◆ gprs_ns_tx()

static int gprs_ns_tx	(	struct gprs_nsvc *	nsvc,
		struct msgb *	msg
	)

static

◆ gprs_ns_tx_alive()

int gprs_ns_tx_alive ( struct gprs_nsvc * nsvc )

Transmit a NS-ALIVE on a given NS-VC.

Parameters

[in] nsvc NS-VC on which the NS-ALIVE is to be transmitted

Returns: 0 in case of success

References DNS, gprs_ns_tx_simple(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_DEBUG, LOGP, NS_PDUT_ALIVE, gprs_nsvc::nsei, and gprs_nsvc::nsvci.

Referenced by gprs_ns_timer_cb(), and gprs_nsvc_start_test().

◆ gprs_ns_tx_alive_ack()

int gprs_ns_tx_alive_ack ( struct gprs_nsvc * nsvc )

Transmit a NS-ALIVE-ACK on a given NS-VC.

Parameters

[in] nsvc NS-VC on which the NS-ALIVE-ACK is to be transmitted

Returns: 0 in case of success

References DNS, gprs_ns_tx_simple(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_DEBUG, LOGP, NS_PDUT_ALIVE_ACK, gprs_nsvc::nsei, and gprs_nsvc::nsvci.

Referenced by gprs_ns_process_msg().

◆ gprs_ns_tx_block()

int gprs_ns_tx_block	(	struct gprs_nsvc *	nsvc,
		uint8_t	cause
	)

Transmit a NS-BLOCK on a given NS-VC.

Parameters

[in]	nsvc	NS-VC on which the NS-BLOCK is to be transmitted
[in]	cause	Numeric NS Cause value

Returns: 0 in case of success

References cause, gprs_nsvc::ctrg, DNS, ERR_IF_NSVC_USES_SNS, gprs_ns_cause_str(), gprs_ns_msgb_alloc(), gprs_ns_tx(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_INFO, LOGP, msg, msgb_put(), msgb_tvlv_put(), NS_CTR_BLOCKED, NS_IE_CAUSE, NS_IE_VCI, ns_mark_blocked, NS_PDUT_BLOCK, gprs_nsvc::nsei, gprs_nsvc::nsvci, osmo_htons, gprs_ns_hdr::pdu_type, rate_ctr_group_get_ctr(), and rate_ctr_inc().

Referenced by DEFUN().

◆ gprs_ns_tx_block_ack()

static int gprs_ns_tx_block_ack ( struct gprs_nsvc * nsvc )

static

Transmit a NS-BLOCK-ACK on a given NS-VC.

Parameters

[in] nsvc NS-VC on which the NS-BLOCK is to be transmitted

Returns: 0 in case of success

References DNS, ERR_IF_NSVC_USES_SNS, gprs_ns_msgb_alloc(), gprs_ns_tx(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_INFO, LOGP, msg, msgb_put(), msgb_tvlv_put(), NS_IE_VCI, NS_PDUT_BLOCK_ACK, gprs_nsvc::nsei, gprs_nsvc::nsvci, osmo_htons, and gprs_ns_hdr::pdu_type.

Referenced by gprs_ns_rx_block().

◆ gprs_ns_tx_reset()

int gprs_ns_tx_reset	(	struct gprs_nsvc *	nsvc,
		uint8_t	cause
	)

Transmit a NS-RESET on a given NSVC.

Parameters

[in]	nsvc	NS-VC used for transmission
[in]	cause	Numeric NS cause value

References cause, DNS, ERR_IF_NSVC_USES_SNS, gprs_ns_cause_str(), gprs_ns_msgb_alloc(), gprs_ns_tx(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_INFO, LOGP, msg, msgb_put(), msgb_tvlv_put(), NS_IE_CAUSE, NS_IE_NSEI, NS_IE_VCI, NS_PDUT_RESET, nsei, gprs_nsvc::nsei, gprs_nsvc::nsvci, osmo_htons, and gprs_ns_hdr::pdu_type.

Referenced by gprs_ns_timer_cb(), and gprs_nsvc_reset().

◆ gprs_ns_tx_reset_ack()

static int gprs_ns_tx_reset_ack ( struct gprs_nsvc * nsvc )

static

References DNS, ERR_IF_NSVC_USES_SNS, gprs_ns_msgb_alloc(), gprs_ns_tx(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_INFO, LOGP, msg, msgb_put(), msgb_tvlv_put(), NS_IE_NSEI, NS_IE_VCI, NS_PDUT_RESET_ACK, nsei, gprs_nsvc::nsei, gprs_nsvc::nsvci, osmo_htons, and gprs_ns_hdr::pdu_type.

Referenced by gprs_ns_rx_reset().

◆ gprs_ns_tx_simple()

static int gprs_ns_tx_simple	(	struct gprs_nsvc *	nsvc,
		uint8_t	pdu_type
	)

static

References gprs_ns_msgb_alloc(), gprs_ns_tx(), LOG_CTX_GB_NSVC, log_set_context(), msg, msgb_put(), pdu_type, and gprs_ns_hdr::pdu_type.

Referenced by gprs_ns_process_msg(), gprs_ns_tx_alive(), gprs_ns_tx_alive_ack(), and gprs_ns_tx_unblock().

◆ gprs_ns_tx_sns_ack()

int gprs_ns_tx_sns_ack	(	struct gprs_nsvc *	nsvc,
		uint8_t	trans_id,
		uint8_t *	cause,
		const struct gprs_ns_ie_ip4_elem *	ip4_elems,
		unsigned int	num_ip4_elems
	)

Encode + Transmit a SNS-ACK as per Section 9.3.1.

Parameters

[in]	nsvc	NS-VC through which to transmit the ACK
[in]	trans_id	Transaction ID which to acknowledge
[in]	cause	Pointer to cause value (NULL if no cause to be sent)
[in]	ip4_elems	Array of IPv4 Elements
[in]	num_ip4_elems	number of ip4_elems

Returns: 0 on success; negative in case of error

References gprs_ns_inst::bss_sns_fi, cause, DNS, gprs_ns_msgb_alloc(), gprs_ns_tx(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_ERROR, LOGP, msg, msgb_free(), msgb_put(), msgb_tvlv_put(), msgb_v_put(), NS_IE_CAUSE, NS_IE_IPv4_LIST, NS_IE_NSEI, nsei, gprs_nsvc::nsei, gprs_nsvc::nsi, osmo_htons, gprs_ns_hdr::pdu_type, and SNS_PDUT_ACK.

Referenced by gprs_sns_st_configured().

◆ gprs_ns_tx_sns_config()

int gprs_ns_tx_sns_config	(	struct gprs_nsvc *	nsvc,
		bool	end_flag,
		const struct gprs_ns_ie_ip4_elem *	ip4_elems,
		unsigned int	num_ip4_elems
	)

Encode + Transmit a SNS-CONFIG as per Section 9.3.4.

Parameters

[in]	nsvc	NS-VC through which to transmit the SNS-CONFIG
[in]	end_flag	Whether or not this is the last SNS-CONFIG
[in]	ip4_elems	Array of IPv4 Elements
[in]	num_ip4_elems	number of ip4_elems

Returns: 0 on success; negative in case of error

References gprs_ns_inst::bss_sns_fi, DNS, gprs_ns_msgb_alloc(), gprs_ns_tx(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_ERROR, LOGP, msg, msgb_free(), msgb_put(), msgb_tvlv_put(), msgb_v_put(), NS_IE_IPv4_LIST, NS_IE_NSEI, nsei, gprs_nsvc::nsei, gprs_nsvc::nsi, osmo_htons, gprs_ns_hdr::pdu_type, and SNS_PDUT_CONFIG.

Referenced by gprs_sns_st_config_bss_onenter().

◆ gprs_ns_tx_sns_config_ack()

int gprs_ns_tx_sns_config_ack	(	struct gprs_nsvc *	nsvc,
		uint8_t *	cause
	)

Encode + Transmit a SNS-CONFIG-ACK as per Section 9.3.5.

Parameters

[in]	nsvc	NS-VC through which to transmit the SNS-CONFIG-ACK
[in]	cause	Pointer to cause value (NULL if no cause to be sent)

Returns: 0 on success; negative in case of error

References gprs_ns_inst::bss_sns_fi, cause, DNS, gprs_ns_msgb_alloc(), gprs_ns_tx(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_ERROR, LOGP, msg, msgb_free(), msgb_put(), msgb_tvlv_put(), NS_IE_CAUSE, NS_IE_NSEI, nsei, gprs_nsvc::nsei, gprs_nsvc::nsi, osmo_htons, gprs_ns_hdr::pdu_type, and SNS_PDUT_CONFIG_ACK.

Referenced by gprs_sns_st_config_sgsn().

◆ gprs_ns_tx_sns_size()

int gprs_ns_tx_sns_size	(	struct gprs_nsvc *	nsvc,
		bool	reset_flag,
		uint16_t	max_nr_nsvc,
		uint16_t *	ip4_ep_nr,
		uint16_t *	ip6_ep_nr
	)

Encode + transmit a SNS-SIZE as per Section 9.3.7.

Parameters

[in]	nsvc	NS-VC through which to transmit the SNS-SIZE
[in]	reset_flag	Whether or not to add a RESET flag
[in]	max_nr_nsvc	Maximum number of NS-VCs
[in]	ip4_ep_nr	Number of IPv4 endpoints (NULL if none)
[in]	ip6_ep_nr	Number of IPv6 endpoints (NULL if none)

Returns: 0 on success; negative in case of error

References gprs_ns_inst::bss_sns_fi, DNS, gprs_ns_msgb_alloc(), gprs_ns_tx(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_ERROR, LOGP, msg, msgb_free(), msgb_put(), msgb_tv16_put(), msgb_tv_put(), msgb_tvlv_put(), NS_IE_IPv4_EP_NR, NS_IE_IPv6_EP_NR, NS_IE_MAX_NR_NSVC, NS_IE_NSEI, NS_IE_RESET_FLAG, nsei, gprs_nsvc::nsei, gprs_nsvc::nsi, osmo_htons, gprs_ns_hdr::pdu_type, and SNS_PDUT_SIZE.

Referenced by gprs_sns_st_size_onenter().

◆ gprs_ns_tx_sns_size_ack()

int gprs_ns_tx_sns_size_ack	(	struct gprs_nsvc *	nsvc,
		uint8_t *	cause
	)

Encode + Transmit a SNS-SIZE-ACK as per Section 9.3.8.

Parameters

[in]	nsvc	NS-VC through which to transmit the SNS-SIZE-ACK
[in]	cause	Pointer to cause value (NULL if no cause to be sent)

Returns: 0 on success; negative in case of error

References gprs_ns_inst::bss_sns_fi, cause, DNS, gprs_ns_msgb_alloc(), gprs_ns_tx(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_ERROR, LOGP, msg, msgb_free(), msgb_put(), msgb_tvlv_put(), NS_IE_CAUSE, NS_IE_NSEI, nsei, gprs_nsvc::nsei, gprs_nsvc::nsi, osmo_htons, gprs_ns_hdr::pdu_type, and SNS_PDUT_SIZE_ACK.

◆ gprs_ns_tx_status()

int gprs_ns_tx_status	(	struct gprs_nsvc *	nsvc,
		uint8_t	cause,
		uint16_t	bvci,
		struct msgb *	orig_msg
	)

Transmit a NS-STATUS on a given NSVC.

Parameters

[in]	nsvc	NS-VC to be used for transmission
[in]	cause	Numeric NS cause value
[in]	bvci	BVCI to be reset within NSVC
[in]	orig_msg	message causing the STATUS

References bvci, cause, DNS, gprs_ns_cause_str(), gprs_ns_msgb_alloc(), gprs_ns_tx(), msgb::l2h, LOG_CTX_GB_NSVC, log_set_context(), LOGL_NOTICE, LOGP, msg, msgb_l2len(), msgb_put(), msgb_tvlv_put(), NS_CAUSE_BVCI_UNKNOWN, NS_CAUSE_INVAL_ESSENT_IE, NS_CAUSE_MISSING_ESSENT_IE, NS_CAUSE_NSVC_BLOCKED, NS_CAUSE_NSVC_UNKNOWN, NS_CAUSE_PDU_INCOMP_PSTATE, NS_CAUSE_PROTO_ERR_UNSPEC, NS_CAUSE_SEM_INCORR_PDU, NS_IE_CAUSE, NS_IE_PDU, NS_IE_VCI, NS_PDUT_STATUS, gprs_nsvc::nsei, gprs_nsvc::nsvci, osmo_htons, and gprs_ns_hdr::pdu_type.

Referenced by gprs_ns_process_msg(), gprs_ns_rx_block(), gprs_ns_rx_reset(), gprs_ns_rx_reset_ack(), gprs_ns_rx_unitdata(), and gprs_ns_vc_create().

◆ gprs_ns_tx_unblock()

int gprs_ns_tx_unblock ( struct gprs_nsvc * nsvc )

Transmit a NS-UNBLOCK on a given NS-VC.

Parameters

[in] nsvc NS-VC on which the NS-UNBLOCK is to be transmitted

Returns: 0 in case of success

References DNS, ERR_IF_NSVC_USES_SNS, gprs_ns_tx_simple(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_INFO, LOGP, NS_PDUT_UNBLOCK, gprs_nsvc::nsei, and gprs_nsvc::nsvci.

Referenced by DEFUN(), and gprs_ns_process_msg().

◆ gprs_ns_vc_create()

int gprs_ns_vc_create	(	struct gprs_ns_inst *	nsi,
		struct msgb *	msg,
		struct gprs_nsvc *	fallback_nsvc,
		struct gprs_nsvc **	new_nsvc
	)

Create/get NS-VC independently from underlying transport layer.

Parameters

	nsi	NS instance to which the data belongs
[in]	msg	message buffer containing newly-received data
[in]	fallback_nsvc	is used to send error messages back to the peer and to initialise the ll info of a created NS-VC object
[out]	new_nsvc	contains a pointer to a NS-VC object if one has been created or found

Returns: < 0 in case of error, GPRS_NS_CS_SKIPPED if a message has been skipped, GPRS_NS_CS_REJECTED if a message has been rejected and answered accordingly, GPRS_NS_CS_CREATED if a new NS-VC object has been created and registered, and GPRS_NS_CS_FOUND if an existing NS-VC object has been found with the same NSEI.

This contains the initial NS automaton state (NS-VC not yet attached).

References CHECK_TX_RC, gprs_ns_hdr::data, DNS, get_value_string(), GPRS_NS_CS_CREATED, GPRS_NS_CS_FOUND, GPRS_NS_CS_REJECTED, GPRS_NS_CS_SKIPPED, gprs_ns_ll_copy(), gprs_ns_ll_str(), gprs_ns_pdu_strings, gprs_ns_tx_status(), gprs_nsvc_by_nsvci(), gprs_nsvc_create2(), if(), LOG_CTX_GB_NSVC, log_set_context(), LOGL_ERROR, LOGL_INFO, LOGL_NOTICE, LOGP, msg, msgb_l2len(), ns_att_tlvdef, NS_CAUSE_MISSING_ESSENT_IE, NS_CAUSE_PDU_INCOMP_PSTATE, NS_CTR_NSEI_CHG, NS_IE_CAUSE, NS_IE_NSEI, NS_IE_VCI, NS_PDUT_ALIVE_ACK, NS_PDUT_RESET, NS_PDUT_RESET_ACK, NS_PDUT_STATUS, ns_set_state, NSE_S_ALIVE, nsei, gprs_nsvc::nsei, gprs_nsvc::nsvci, gprs_nsvc::nsvci_is_valid, gprs_ns_hdr::pdu_type, rate_ctr_group_get_ctr(), rate_ctr_inc(), tlv_parse(), TLVP_PRESENT, and tlvp_val16be().

Referenced by gprs_ns_rcvmsg().

◆ gprs_nsvc_by_nsei()

struct gprs_nsvc * gprs_nsvc_by_nsei	(	struct gprs_ns_inst *	nsi,
		uint16_t	nsei
	)

Lookup struct gprs_nsvc based on NSEI.

Parameters

[in]	nsi	NS instance in which to search
[in]	nsei	NSEI to be searched

Returns: first gprs_nsvc of respective NSEI

References gprs_ns_inst::gprs_nsvcs, list, llist_for_each_entry, nsei, gprs_nsvc::nsei, and gprs_nsvc::nsi.

Referenced by DEFUN(), and gprs_ns_sendmsg().

◆ gprs_nsvc_by_nsvci()

struct gprs_nsvc * gprs_nsvc_by_nsvci	(	struct gprs_ns_inst *	nsi,
		uint16_t	nsvci
	)

Lookup struct gprs_nsvc based on NSVCI.

Parameters

[in]	nsi	NS instance in which to search
[in]	nsvci	NSVCI to be searched

Returns: gprs_nsvc of respective NSVCI

References gprs_ns_inst::gprs_nsvcs, list, llist_for_each_entry, gprs_nsvc::nsi, and gprs_nsvc::nsvci.

Referenced by DEFUN(), gprs_ns_vc_create(), gprs_nsvc_create2(), and gprs_nsvc_replace_if_found().

◆ gprs_nsvc_by_rem_addr()

struct gprs_nsvc * gprs_nsvc_by_rem_addr	(	struct gprs_ns_inst *	nsi,
		const struct sockaddr_in *	sin
	)

Lookup NS-VC based on specified remote peer socket addr.

Parameters

[in]	nsi	NS Instance within which we shall look up the NS-VC
[in]	sin	Remote peer Socket Address (IP + UDP Port)

Returns: NS-VC matching the given peer; NULL in case of none

References gprs_nsvc::bts_addr, gprs_ns_inst::gprs_nsvcs, gprs_nsvc::ip, list, llist_for_each_entry, and gprs_nsvc::nsi.

Referenced by gprs_ns_nsip_connect(), gprs_ns_nsip_connect_sns(), gprs_ns_rcvmsg(), and nsvc_by_ip4_elem().

◆ gprs_nsvc_create2()

struct gprs_nsvc * gprs_nsvc_create2	(	struct gprs_ns_inst *	nsi,
		uint16_t	nsvci,
		uint8_t	sig_weight,
		uint8_t	data_weight
	)

Create a new NS-VC (Virtual Circuit) within given instance.

Parameters

[in]	nsi	NS Instance in which to create the NSVC
[in]	nsvci]	NS Virtual Connection Identifier for this NSVC
[in]	sig_weight	Signalling Weight of this NS-VC. Use "0" for no signalling
[in]	data_weight	Data WEight of this NS-VC. Use "0" for no data

Returns: newly-created gprs_nsvc within nsi. NULL on error.

References gprs_ns_inst::bss_sns_fi, gprs_nsvc::ctrg, gprs_nsvc::data_weight, data_weight, DNS, gprs_ns_timer_cb(), gprs_nsvc_by_nsvci(), gprs_ns_inst::gprs_nsvcs, gprs_nsvc::list, llist_add(), LOGL_ERROR, LOGL_INFO, LOGP, ns_set_state, NSE_S_BLOCKED, gprs_nsvc::nsi, gprs_ns_inst::nsip, nsvc_ctrg_desc, nsvc_statg_desc, gprs_nsvc::nsvci, gprs_nsvc::nsvci_is_valid, osmo_stat_item_group_alloc(), osmo_timer_setup(), rate_ctr_group_alloc(), gprs_nsvc::sig_weight, sig_weight, gprs_nsvc::statg, gprs_nsvc::timer, and gprs_ns_inst::use_reset_block_unblock.

Referenced by DEFUN(), gprs_ns_instantiate(), gprs_ns_nsip_connect(), gprs_ns_nsip_connect_sns(), gprs_ns_rx_reset(), gprs_ns_vc_create(), and gprs_nsvc_create_ip4().

◆ gprs_nsvc_delete()

void gprs_nsvc_delete ( struct gprs_nsvc * nsvc )

Delete given NS-VC.

Parameters

[in] nsvc gprs_nsvc to be deleted

References gprs_nsvc::ctrg, gprs_nsvc::list, llist_del(), osmo_stat_item_group_free(), osmo_timer_del(), rate_ctr_group_free(), gprs_nsvc::statg, and gprs_nsvc::timer.

Referenced by do_sns_delete(), and gprs_ns_close().

◆ gprs_nsvc_replace_if_found()

static int gprs_nsvc_replace_if_found	(	uint16_t	nsvci,
		struct gprs_nsvc **	nsvc,
		struct gprs_nsvc **	old_nsvc
	)

static

References DNS, gprs_ns_ll_str(), gprs_nsvc_by_nsvci(), LOGL_INFO, LOGP, and gprs_nsvc::nsvci.

Referenced by gprs_ns_rx_reset(), and gprs_ns_rx_reset_ack().

◆ gprs_nsvc_reset()

int gprs_nsvc_reset	(	struct gprs_nsvc *	nsvc,
		uint8_t	cause
	)

Initiate a RESET procedure.

Parameters

[in]	nsvc	NS-VC in which to start the procedure
[in]	cause	Numeric NS cause value

This is a high-level function initiating a NS-RESET procedure. It will not only send a NS-RESET, but also set the state to BLOCKED and start the Tns-reset timer.

References cause, DNS, ERR_IF_NSVC_USES_SNS, gprs_ns_tx_reset(), LOGL_ERROR, LOGL_INFO, LOGP, ns_set_state, NSE_S_BLOCKED, NSE_S_RESET, gprs_nsvc::nsei, nsvc_start_timer(), and NSVC_TIMER_TNS_RESET.

Referenced by DEFUN(), gprs_ns_nsip_connect(), and gprs_ns_process_msg().

◆ gprs_nsvc_start_test()

void gprs_nsvc_start_test ( struct gprs_nsvc * nsvc )

Start the ALIVE timer procedure in all NS-VCs part of this NS Instance.

References gprs_ns_tx_alive(), nsvc_is_not_used(), nsvc_start_timer(), and NSVC_TIMER_TNS_TEST.

Referenced by do_sns_add(), gprs_ns_rx_reset(), gprs_ns_rx_reset_ack(), and gprs_start_alive_all_nsvcs().

◆ gprs_nsvc_state_append()

char * gprs_nsvc_state_append	(	char *	s,
		struct gprs_nsvc *	nsvc
	)

Append the nsvc state to a talloc string.

Parameters

	s	The string to append to (allocated with talloc)
[in]	nsvc	The NS-VC to print the state of

Returns: The new string with state information appended to it

This function will append a comma-separated state of the NS-VC to the string. The string needs to be allocated with talloc (e.g. talloc_strdup)

References NS_DESC_A, NS_DESC_B, gprs_nsvc::nsei, gprs_nsvc::nsvci, gprs_nsvc::remote_end_is_sgsn, gprs_nsvc::remote_state, and gprs_nsvc::state.

◆ gprs_start_alive_all_nsvcs()

void gprs_start_alive_all_nsvcs ( struct gprs_ns_inst * nsi )

References gprs_nsvc_start_test(), gprs_ns_inst::gprs_nsvcs, list, llist_for_each_entry, and gprs_nsvc::nsi.

Referenced by gprs_sns_st_config_sgsn().

◆ grps_ns_frgre_sendmsg()

int grps_ns_frgre_sendmsg	(	struct gprs_nsvc *	nsvc,
		struct msgb *	msg
	)

◆ handle_nsip_read()

static int handle_nsip_read ( struct osmo_fd * bfd )

static

References osmo_fd::data, GPRS_NS_LL_UDP, gprs_ns_rcvmsg(), msg, msgb_free(), and read_nsip_msg().

Referenced by nsip_fd_cb().

◆ handle_nsip_write()

static int handle_nsip_write ( struct osmo_fd * bfd )

static

Referenced by nsip_fd_cb().

◆ ns2_bind_alloc()

int ns2_bind_alloc	(	struct gprs_ns2_inst *	nsi,
		const char *	name,
		struct gprs_ns2_vc_bind **	result
	)

common allocation + low-level initialization of a bind.

Called by vc-drivers

References gprs_ns2_inst::bind_rate_ctr_idx, gprs_ns2_inst::binding, gprs_ns2_bind_by_name(), INIT_LLIST_HEAD, gprs_ns2_vc_bind::list, llist_add_tail(), name, gprs_ns2_vc_bind::name, nsbind_statg_desc, gprs_ns2_vc_bind::nsi, gprs_ns2_vc_bind::nsvc, osmo_stat_item_group_alloc(), gprs_ns2_vc_bind::sns_data_weight, gprs_ns2_vc_bind::sns_sig_weight, and gprs_ns2_vc_bind::statg.

Referenced by gprs_ns2_fr_bind(), gprs_ns2_frgre_bind(), and gprs_ns2_ip_bind().

◆ ns2_count_transfer_cap()

int ns2_count_transfer_cap	(	struct gprs_ns2_nse *	nse,
		uint16_t	bvci
	)

calculate the transfer capabilities for a nse

Parameters

nse	the nse to count the transfer capability
bvci	a bvci - unused

Returns: the transfer capability in mbit. On error < 0.

References add_bind_array(), gprs_ns2_nse::alive, list, llist_for_each_entry, ns2_vc_is_unblocked(), gprs_ns2_nse::nsvc, gprs_ns2_vc_bind::nsvc, and gprs_ns2_vc_bind::transfer_capability.

Referenced by ns2_prim_status_ind().

◆ ns2_create_vc()

enum ns2_cs ns2_create_vc	(	struct gprs_ns2_vc_bind *	bind,
		struct msgb *	msg,
		const struct osmo_sockaddr *	remote,
		const char *	logname,
		struct msgb **	reject,
		struct gprs_ns2_vc **	success
	)

Create a new NS-VC based on a [received] message.

Depending on the bind it might create a NSE.

Parameters

[in]	bind	the bind through which msg was received
[in]	msg	the actual received message
[in]	remote	address of remote peer sending message
[in]	logname	A name to describe the VC. E.g. ip address pair
[out]	reject	A message filled to be sent back. Only used in failure cases.
[out]	success	A pointer which will be set to the new VC on success

Returns: enum value indicating the status, e.g. GPRS_NS2_CS_CREATED

References gprs_ns2_vc_bind::accept_ipaccess, gprs_ns_hdr::data, DLNS, gprs_ns2_create_nse(), GPRS_NS2_DIALECT_IPACCESS, gprs_ns2_free_nsvc(), gprs_ns2_ip_bind_sockaddr(), GPRS_NS2_LL_UDP, gprs_ns2_lltype_str(), gprs_ns2_nse_by_nsei(), gprs_ns2_nsvc_by_nsvci(), if(), gprs_ns2_vc_bind::ll, LOGL_ERROR, LOGL_INFO, LOGNSE, LOGNSVC, LOGP, msg, msgb_l2len(), ns2_create_vc_sns(), NS2_CS_CREATED, NS2_CS_ERROR, NS2_CS_REJECTED, NS2_CS_SKIPPED, ns2_dialect_to_vc_mode(), ns2_tlv_parse(), ns2_vc_alloc(), NS_CAUSE_MISSING_ESSENT_IE, NS_CAUSE_PDU_INCOMP_PSTATE, NS_CAUSE_PROTO_ERR_UNSPEC, NS_IE_CAUSE, NS_IE_NSEI, NS_IE_VCI, NS_PDUT_ALIVE_ACK, NS_PDUT_RESET, NS_PDUT_RESET_ACK, NS_PDUT_STATUS, nsei, gprs_ns2_vc_bind::nsi, osmo_identifier_sanitize_buf(), osmo_sockaddr_to_str(), osmo_sockaddr_to_str_buf(), gprs_ns_hdr::pdu_type, reject_status_msg(), SNS_PDUT_SIZE, TLVP_PRES_LEN, and tlvp_val16be().

Referenced by handle_nsfrgre_read(), and handle_nsip_recvfrom().

◆ ns2_create_vc_sns()

static enum ns2_cs ns2_create_vc_sns	(	struct gprs_ns2_vc_bind *	bind,
		const struct osmo_sockaddr *	remote,
		struct gprs_ns2_vc **	success,
		uint16_t	nsei
	)

static

◆ ns2_dialect_to_vc_mode()

enum gprs_ns2_vc_mode ns2_dialect_to_vc_mode ( enum gprs_ns2_dialect dialect )

References GPRS_NS2_DIALECT_IPACCESS, GPRS_NS2_DIALECT_SNS, GPRS_NS2_DIALECT_STATIC_ALIVE, GPRS_NS2_DIALECT_STATIC_RESETBLOCK, GPRS_NS2_VC_MODE_ALIVE, and GPRS_NS2_VC_MODE_BLOCKRESET.

Referenced by ns2_create_vc(), and ns2_ip_bind_connect().

◆ ns2_free_nsvcs()

void ns2_free_nsvcs ( struct gprs_ns2_nse * nse )

References gprs_ns2_free_nsvc(), list, llist_empty(), llist_first_entry, gprs_ns2_vc::nse, and gprs_ns2_nse::nsvc.

Referenced by gprs_ns2_free_nse(), gprs_ns2_free_nsvcs(), and ns2_sns_st_all_action_bss().

◆ ns2_load_sharing()

static struct gprs_ns2_vc * ns2_load_sharing	(	struct gprs_ns2_nse *	nse,
		uint16_t	bvci,
		uint32_t	link_selector
	)

static

References bvci, GPRS_NS2_LL_FR, GPRS_NS2_LL_UDP, gprs_ns2_nse::ll, ns2_load_sharing_modulo(), ns2_load_sharing_signal(), ns2_load_sharing_weight_modulo(), and gprs_ns2_vc::nse.

Referenced by gprs_ns2_recv_prim().

◆ ns2_load_sharing_first()

struct gprs_ns2_vc * ns2_load_sharing_first ( struct gprs_ns2_nse * nse )

References list, llist_for_each_entry, ns2_vc_is_unblocked(), gprs_ns2_vc::nse, and gprs_ns2_nse::nsvc.

◆ ns2_load_sharing_modulo()

static struct gprs_ns2_vc * ns2_load_sharing_modulo	(	struct gprs_ns2_nse *	nse,
		uint16_t	bvci,
		uint32_t	load_selector
	)

static

References bvci, list, llist_for_each_entry, ns2_vc_is_unblocked(), gprs_ns2_vc::nse, gprs_ns2_nse::nsvc, and gprs_ns2_nse::nsvc_count.

Referenced by ns2_load_sharing().

◆ ns2_load_sharing_signal()

static struct gprs_ns2_vc * ns2_load_sharing_signal ( struct gprs_ns2_nse * nse )

static

References list, llist_for_each_entry, ns2_vc_is_unblocked(), gprs_ns2_vc::nse, and gprs_ns2_nse::nsvc.

Referenced by ns2_load_sharing().

◆ ns2_load_sharing_weight_modulo()

static struct gprs_ns2_vc * ns2_load_sharing_weight_modulo	(	struct gprs_ns2_nse *	nse,
		uint16_t	bvci,
		uint32_t	load_selector
	)

static

References bvci, data_weight, gprs_ns2_vc::data_weight, list, llist_for_each_entry, ns2_vc_is_unblocked(), gprs_ns2_vc::nse, gprs_ns2_nse::nsvc, gprs_ns2_nse::nsvc_count, and gprs_ns2_nse::sum_data_weight.

Referenced by ns2_load_sharing().

◆ ns2_msgb_alloc()

struct msgb * ns2_msgb_alloc ( void )

Allocate a message buffer for use with the NS2 stack.

References DLNS, LOGL_ERROR, LOGP, msg, msgb_alloc_headroom(), NS_ALLOC_HEADROOM, and NS_ALLOC_SIZE.

Referenced by ns2_tx_block(), ns2_tx_block_ack(), ns2_tx_reset(), ns2_tx_reset_ack(), ns2_tx_simple(), ns2_tx_sns_ack(), ns2_tx_sns_config(), ns2_tx_sns_config_ack(), ns2_tx_sns_procedure(), ns2_tx_sns_size(), ns2_tx_sns_size_ack(), ns2_tx_status(), and reject_status_msg().

◆ ns2_nse_data_sum()

void ns2_nse_data_sum ( struct gprs_ns2_nse * nse )

References gprs_ns2_vc::data_weight, list, llist_for_each_entry, ns2_vc_is_unblocked(), gprs_ns2_vc::nse, gprs_ns2_nse::nsvc, gprs_ns2_nse::nsvc_count, gprs_ns2_vc::sig_weight, gprs_ns2_nse::sum_data_weight, and gprs_ns2_nse::sum_sig_weight.

Referenced by ns2_nse_notify_unblocked().

◆ ns2_nse_notify_unblocked()

void ns2_nse_notify_unblocked	(	struct gprs_ns2_vc *	nsvc,
		bool	unblocked
	)

Notify a nse about the change of a NS-VC.

Parameters

[in]	nsvc	NS-VC which has detected the change (and shall not be notified).
[in]	unblocked	whether the NSE should be marked as unblocked (true) or blocked (false)

References GPRS_NS2_AFF_CAUSE_FAILURE, GPRS_NS2_AFF_CAUSE_RECOVERY, gprs_ns2_nse_by_nsei(), ns2_nse_data_sum(), ns2_prim_status_ind(), ns2_sns_notify_alive(), gprs_ns2_inst::nse, nsei, gprs_ns2_nse::nsvc, and osmo_clock_gettime().

Referenced by gprs_ns2_free_nsvc(), ns2_st_alive_onenter(), ns2_st_blocked_onenter(), ns2_st_reset_onenter(), ns2_st_unblocked_on_enter(), and ns2_st_unconfigured_onenter().

◆ ns2_nse_set_dialect()

int ns2_nse_set_dialect	(	struct gprs_ns2_nse *	nse,
		enum gprs_ns2_dialect	dialect
	)

References gprs_ns2_nse::bss_sns_fi, gprs_ns2_nse::dialect, GPRS_NS2_DIALECT_SNS, GPRS_NS2_DIALECT_UNDEF, gprs_ns2_nse::ip_sns_role_sgsn, ns2_sns_bss_fsm_alloc(), ns2_sns_sgsn_fsm_alloc(), gprs_ns2_nse::nsei, osmo_fsm_inst_term, and OSMO_FSM_TERM_REQUEST.

Referenced by DEFUN(), gprs_ns2_create_nse2(), and ns_nse_nsvc_udp_cmds().

◆ ns2_nse_update_mtu()

void ns2_nse_update_mtu ( struct gprs_ns2_nse * nse )

References gprs_ns2_nse::alive, gprs_ns2_vc::bind, GPRS_NS2_AFF_CAUSE_MTU_CHANGE, list, llist_empty(), llist_for_each_entry, gprs_ns2_nse::mtu, gprs_ns2_vc_bind::mtu, ns2_prim_status_ind(), gprs_ns2_vc::nse, and gprs_ns2_nse::nsvc.

Referenced by gprs_n2_fr_mtu_chg_cb(), and ns2_vc_alloc().

◆ ns2_prim_status_ind()

void ns2_prim_status_ind	(	struct gprs_ns2_nse *	nse,
		struct gprs_ns2_vc *	nsvc,
		uint16_t	bvci,
		enum gprs_ns2_affecting_cause	cause
	)

Send a STATUS.ind primitive to the specified NS instance user.

Parameters

[in]	nsi	NS instance on which we operate
[in]	nsei	NSEI to which the statue relates
[in]	bvci	BVCI to which the status relates
[in]	cause	The cause of the status

Referenced by gprs_ns2_free_nse(), gprs_ns2_free_nsvc(), ns2_nse_notify_unblocked(), ns2_nse_update_mtu(), ns2_sns_st_all_action_bss(), ns2_sns_st_bss_size_onenter(), ns2_sns_st_configured_onenter(), and ns2_st_unblocked_on_enter().

◆ ns2_recv_vc()

int ns2_recv_vc	(	struct gprs_ns2_vc *	nsvc,
		struct msgb *	msg
	)

Bottom-side entry-point for received NS PDU from the driver/bind.

Parameters

[in]	nsvc	NS-VC for which the message was received
	msg	the received message. Ownership is transferred, caller must not free it!

Returns: 0 on success; negative on error

References msg.

Referenced by fr_dlci_rx_cb(), handle_nsfrgre_read(), and handle_nsip_recvfrom().

◆ ns2_tlv_parse()

static int ns2_tlv_parse	(	struct tlv_parsed *	dec,
		const uint8_t *	buf,
		int	buf_len,
		uint8_t	lv_tag,
		uint8_t	lv_tag2
	)

inlinestatic

References ns_att_tlvdef1, ns_att_tlvdef2, and tlv_parse().

Referenced by ns2_create_vc().

◆ ns2_vc_alloc()

struct gprs_ns2_vc * ns2_vc_alloc	(	struct gprs_ns2_vc_bind *	bind,
		struct gprs_ns2_nse *	nse,
		bool	initiater,
		enum gprs_ns2_vc_mode	vc_mode,
		const char *	id
	)

Allocate a NS-VC within the given bind + NSE.

Parameters

[in]	bind	The 'bind' on which we operate
[in]	nse	The NS Entity on which we operate
[in]	initiater	- if this is an incoming remote (!initiater) or a local outgoing connection (initater)
[in]	id	- human-readable identifier

Returns: newly allocated NS-VC on success; NULL on error

References gprs_ns2_vc::bind, gprs_ns2_vc::blist, gprs_ns2_vc::ctrg, gprs_ns2_vc::data_weight, gprs_ns2_vc::list, gprs_ns2_nse::ll, gprs_ns2_vc_bind::ll, llist_add_tail(), gprs_ns2_vc::mode, ns2_nse_update_mtu(), ns2_vc_fsm_alloc(), gprs_ns2_vc::nse, gprs_ns2_vc_bind::nsi, gprs_ns2_nse::nsvc, gprs_ns2_vc_bind::nsvc, nsvc_ctrg_desc, gprs_ns2_inst::nsvc_rate_ctr_idx, nsvc_statg_desc, OSMO_ASSERT, osmo_clock_gettime(), osmo_stat_item_group_alloc(), osmo_stat_item_group_free(), osmo_stat_item_group_set_name(), rate_ctr_group_alloc(), rate_ctr_group_free(), rate_ctr_group_set_name(), gprs_ns2_vc::sig_weight, gprs_ns2_vc::statg, and gprs_ns2_vc::ts_alive_change.

Referenced by gprs_ns2_fr_connect(), ns2_create_vc(), and ns2_ip_bind_connect().

◆ ns_is_sns()

static bool ns_is_sns ( uint8_t pdu_type )

static

References pdu_type, SNS_PDUT_ACK, SNS_PDUT_ADD, SNS_PDUT_CHANGE_WEIGHT, SNS_PDUT_CONFIG, SNS_PDUT_CONFIG_ACK, SNS_PDUT_DELETE, SNS_PDUT_SIZE, and SNS_PDUT_SIZE_ACK.

Referenced by gprs_ns_process_msg(), and gprs_ns_tx().

◆ ns_osmo_signal_dispatch()

static void ns_osmo_signal_dispatch	(	struct gprs_nsvc *	nsvc,
		unsigned int	signal,
		uint8_t	cause
	)

static

References ns_signal_data::cause, ns_signal_data::nsvc, osmo_signal_dispatch(), and SS_L_NS.

Referenced by gprs_ns_process_msg(), gprs_ns_rx_block(), gprs_ns_rx_reset(), and gprs_ns_timer_cb().

◆ ns_osmo_signal_dispatch_mismatch()

static void ns_osmo_signal_dispatch_mismatch	(	struct gprs_nsvc *	nsvc,
		struct msgb *	msg,
		uint8_t	pdu_type,
		uint8_t	ie_type
	)

static

References ns_signal_data::ie_type, ns_signal_data::msg, ns_signal_data::nsvc, osmo_signal_dispatch(), ns_signal_data::pdu_type, pdu_type, S_NS_MISMATCH, and SS_L_NS.

Referenced by gprs_ns_rx_reset(), and gprs_ns_rx_reset_ack().

◆ ns_osmo_signal_dispatch_replaced()

static void ns_osmo_signal_dispatch_replaced	(	struct gprs_nsvc *	nsvc,
		struct gprs_nsvc *	old_nsvc
	)

static

References ns_signal_data::nsvc, ns_signal_data::old_nsvc, osmo_signal_dispatch(), S_NS_REPLACED, and SS_L_NS.

Referenced by gprs_ns_rx_reset(), and gprs_ns_rx_reset_ack().

◆ ns_set_state_with_log()

static void ns_set_state_with_log	(	struct gprs_nsvc *	nsvc,
		uint32_t	state,
		bool	is_remote,
		const char *	file,
		unsigned	line
	)

inlinestatic

References DNS, file(), LOGL_DEBUG, LOGPSRC, NS_DESC_A, NS_DESC_B, NS_DESC_R, gprs_nsvc::nsei, gprs_nsvc::nsvci, gprs_nsvc::remote_state, and gprs_nsvc::state.

◆ nsip_fd_cb()

static int nsip_fd_cb	(	struct osmo_fd *	bfd,
		unsigned int	what
	)

static

References handle_nsip_read(), handle_nsip_write(), OSMO_FD_READ, and OSMO_FD_WRITE.

Referenced by gprs_ns_nsip_listen().

◆ nsip_sendmsg()

static int nsip_sendmsg	(	struct gprs_nsvc *	nsvc,
		struct msgb *	msg
	)

static

References gprs_nsvc::bts_addr, osmo_fd::fd, gprs_ns_inst::fd, gprs_nsvc::ip, msg, msgb_free(), gprs_nsvc::nsi, and gprs_ns_inst::nsip.

Referenced by gprs_ns_tx().

◆ nsvc_is_not_used()

static bool nsvc_is_not_used ( const struct gprs_nsvc * nsvc )

static

References gprs_nsvc::data_weight, and gprs_nsvc::sig_weight.

Referenced by gprs_ns_process_msg(), gprs_ns_tx(), and gprs_nsvc_start_test().

◆ nsvc_start_timer()

static void nsvc_start_timer	(	struct gprs_nsvc *	nsvc,
		enum nsvc_timer_mode	mode
	)

static

◆ nsvc_timer_elapsed_ms()

static int nsvc_timer_elapsed_ms ( struct gprs_nsvc * nsvc )

static

References osmo_gettimeofday(), gprs_nsvc::timer_started, and timersub.

Referenced by gprs_ns_process_msg().

◆ read_nsip_msg()

static struct msgb * read_nsip_msg	(	struct osmo_fd *	bfd,
		int *	error,
		struct sockaddr_in *	saddr
	)

static

References DNS, osmo_fd::fd, gprs_ns_msgb_alloc(), LOGL_ERROR, LOGP, msg, msgb_free(), msgb_put(), NS_ALLOC_HEADROOM, NS_ALLOC_SIZE, and osmo_sock_get_name2().

Referenced by handle_nsip_read().

◆ reject_status_msg()

static int reject_status_msg	(	struct msgb *	orig_msg,
		struct tlv_parsed *	tp,
		struct msgb **	reject,
		enum ns_cause	cause
	)

static

Create a status message to be sent over a new connection.

Parameters

[in]	orig_msg	the original message
[in]	tp	TLVP parsed of the original message
[out]	reject	callee-allocated message buffer of the generated NS-STATUS
[in]	cause	Cause for the rejection

Returns: 0 on success

References cause, DLNS, gprs_ns2_cause_str(), msgb::l2h, LOGL_NOTICE, LOGP, msg, msgb_free(), msgb_l2len(), msgb_put(), msgb_tvlv_put(), ns2_msgb_alloc(), NS_CAUSE_INVAL_ESSENT_IE, NS_CAUSE_MISSING_ESSENT_IE, NS_CAUSE_NSVC_BLOCKED, NS_CAUSE_NSVC_UNKNOWN, NS_CAUSE_PDU_INCOMP_PSTATE, NS_CAUSE_PROTO_ERR_UNSPEC, NS_CAUSE_SEM_INCORR_PDU, NS_IE_CAUSE, NS_IE_NSEI, NS_IE_PDU, NS_IE_VCI, NS_PDUT_STATUS, nsei, gprs_ns_hdr::pdu_type, TLVP_PRES_LEN, TLVP_VAL, and tlvp_val16be().

Referenced by ns2_create_vc().

Variable Documentation

◆ attribute

enum ns_pdu_type __attribute__

◆ data [1/2]

◆ data [2/2]

uint8_t gprs_ns_hdr::data[0]

variable-length payload

Referenced by gprs_ns_process_msg(), gprs_ns_rx_block(), gprs_ns_rx_reset(), gprs_ns_rx_reset_ack(), gprs_ns_rx_sns(), gprs_ns_rx_status(), gprs_ns_rx_unitdata(), gprs_ns_sendmsg(), gprs_ns_vc_create(), ns2_create_vc(), ns2_sns_rx(), and ns2_tx_unit_data().

◆ data_weight [1/3]

uint8_t data_weight

Referenced by DEFUN(), gprs_nsvc_create2(), ip46_weight_sum(), ip4_weight_sum(), ip6_weight_sum(), ns2_load_sharing_weight_modulo(), ns2_vc_create_ip(), and ns_nse_nsvc_udp_cmds().

◆ data_weight [2/3]

uint8_t gprs_ns_ie_ip4_elem::data_weight

Referenced by create_missing_nsvcs(), create_nsvc_for_new_sbind(), do_sns_change_weight(), gprs_nsvc_create_ip4(), gprs_sns_bss_fsm_alloc(), ip4_weight_sum(), ns2_add_procedure(), ns2_nsvc_create_ip4(), ns2_sns_add_elements(), ns2_sns_st_local_procedure(), ns2_update_weight_entry(), remove_bind_elem(), update_ip4_elem(), update_remote_ip4_elem(), and vty_dump_sns_ip4().

◆ data_weight [3/3]

uint8_t gprs_ns_ie_ip6_elem::data_weight

Referenced by create_missing_nsvcs(), create_nsvc_for_new_sbind(), do_sns_change_weight(), ip6_weight_sum(), ns2_add_procedure(), ns2_nsvc_create_ip6(), ns2_sns_add_elements(), ns2_sns_st_local_procedure(), ns2_update_weight_entry(), remove_bind_elem(), update_ip6_elem(), and vty_dump_sns_ip6().

◆ gprs_ns2_aff_cause_prim_strs

const struct value_string gprs_ns2_aff_cause_prim_strs[]

Initial value:

= {
        { GPRS_NS2_AFF_CAUSE_VC_FAILURE,        "NSVC failure" },
        { GPRS_NS2_AFF_CAUSE_VC_RECOVERY,       "NSVC recovery" },
        { GPRS_NS2_AFF_CAUSE_FAILURE,           "NSE failure" },
        { GPRS_NS2_AFF_CAUSE_RECOVERY,          "NSE recovery" },
        { GPRS_NS2_AFF_CAUSE_SNS_CONFIGURED,    "NSE SNS configured" },
        { GPRS_NS2_AFF_CAUSE_SNS_FAILURE,       "NSE SNS failure" },
        { GPRS_NS2_AFF_CAUSE_SNS_NO_ENDPOINTS,  "NSE SNS no endpoints"},
        { GPRS_NS2_AFF_CAUSE_MTU_CHANGE,        "NSE MTU changed" },
        { 0, NULL }
}

Referenced by gprs_ns2_aff_cause_prim_str().

◆ gprs_ns2_cause_strs

const struct value_string gprs_ns2_cause_strs[]

Initial value:

= {
        { NS_CAUSE_TRANSIT_FAIL,        "Transit network failure" },
        { NS_CAUSE_OM_INTERVENTION,     "O&M intervention" },
        { NS_CAUSE_EQUIP_FAIL,          "Equipment failure" },
        { NS_CAUSE_NSVC_BLOCKED,        "NS-VC blocked" },
        { NS_CAUSE_NSVC_UNKNOWN,        "NS-VC unknown" },
        { NS_CAUSE_BVCI_UNKNOWN,        "BVCI unknown" },
        { NS_CAUSE_SEM_INCORR_PDU,      "Semantically incorrect PDU" },
        { NS_CAUSE_PDU_INCOMP_PSTATE,   "PDU not compatible with protocol state" },
        { NS_CAUSE_PROTO_ERR_UNSPEC,    "Protocol error, unspecified" },
        { NS_CAUSE_INVAL_ESSENT_IE,     "Invalid essential IE" },
        { NS_CAUSE_MISSING_ESSENT_IE,   "Missing essential IE" },
        { NS_CAUSE_INVAL_NR_IPv4_EP,    "Invalid Number of IPv4 Endpoints" },
        { NS_CAUSE_INVAL_NR_IPv6_EP,    "Invalid Number of IPv6 Endpoints" },
        { NS_CAUSE_INVAL_NR_NS_VC,      "Invalid Number of NS-VCs" },
        { NS_CAUSE_INVAL_WEIGH,         "Invalid Weights" },
        { NS_CAUSE_UNKN_IP_EP,          "Unknown IP Endpoint" },
        { NS_CAUSE_UNKN_IP_ADDR,        "Unknown IP Address" },
        { NS_CAUSE_UNKN_IP_TEST_FAILED, "IP Test Failed" },
        { 0, NULL }
}

Referenced by gprs_ns2_cause_str().

◆ gprs_ns2_lltype_strs

const struct value_string gprs_ns2_lltype_strs[]

Initial value:

= {
        { GPRS_NS2_LL_UDP,      "UDP" },
        { GPRS_NS2_LL_FR_GRE,   "FR_GRE" },
        { GPRS_NS2_LL_FR,       "FR" },
        { 0, NULL }
}

Referenced by gprs_ns2_lltype_str().

◆ gprs_ns2_prim_strs

const struct value_string gprs_ns2_prim_strs[]

Initial value:

= {
        { GPRS_NS2_PRIM_UNIT_DATA,      "UNIT DATA" },
        { GPRS_NS2_PRIM_CONGESTION,     "CONGESTION" },
        { GPRS_NS2_PRIM_STATUS,         "STATUS" },
        { 0, NULL }
}

Referenced by gprs_ns2_prim_str().

◆ gprs_ns_pdu_strings [1/2]

const struct value_string gprs_ns_pdu_strings[]

extern

Referenced by gprs_ns_process_msg(), gprs_ns_rx_sns(), gprs_ns_tx(), gprs_ns_vc_create(), ns2_sns_rx(), and ns2_vc_rx().

◆ gprs_ns_pdu_strings [2/2]

const struct value_string gprs_ns_pdu_strings[]

Initial value:

= {
        
        { NS_PDUT_UNITDATA,     "NS-UNITDATA" },        
        { NS_PDUT_RESET,        "NS-RESET" },           
        { NS_PDUT_RESET_ACK,    "NS-RESET-ACK" },       
        { NS_PDUT_BLOCK,        "NS-BLOCK" },           
        { NS_PDUT_BLOCK_ACK,    "NS-BLOCK-ACK" },       
        { NS_PDUT_UNBLOCK,      "NS-UNBLOCK" },         
        { NS_PDUT_UNBLOCK_ACK,  "NS-UNBLOCK-ACK" },     
        { NS_PDUT_STATUS,       "NS-STATUS" },          
        { NS_PDUT_ALIVE,        "NS-ALIVE" },           
        { NS_PDUT_ALIVE_ACK,    "NS-ALIVE-ACK" },       
        
        { SNS_PDUT_ACK,                 "SNS-ACK" },            
        { SNS_PDUT_ADD,                 "SNS-ADD" },            
        { SNS_PDUT_CHANGE_WEIGHT,       "SNS-CHANGEWEIGHT" },   
        { SNS_PDUT_CONFIG,              "SNS-CONFIG" },         
        { SNS_PDUT_CONFIG_ACK,          "SNS-CONFIG-ACK" },     
        { SNS_PDUT_DELETE,              "SNS-DELETE" },         
        { SNS_PDUT_SIZE,                "SNS-SIZE" },           
        { SNS_PDUT_SIZE_ACK,            "SNS-SIZE-ACK" },       
        { 0, NULL }
}

Referenced by gprs_ns_process_msg(), gprs_ns_rx_sns(), gprs_ns_tx(), gprs_ns_vc_create(), ns2_sns_rx(), and ns2_vc_rx().

◆ gprs_ns_signal_ns_names

const struct value_string gprs_ns_signal_ns_names[]

Initial value:

= {
        { S_NS_RESET,           "NS-RESET" },
        { S_NS_BLOCK,           "NS-BLOCK" },
        { S_NS_UNBLOCK,         "NS-UNBLOCK" },
        { S_NS_ALIVE_EXP,       "NS-ALIVE expired" },
        { S_NS_REPLACED,        "NSVC replaced" },
        { S_NS_MISMATCH,        "Unexpected IE" },
        { S_SNS_CONFIGURED,     "SNS Configured" },
        { 0, NULL }
}

◆ gprs_sns_fsm_registered

bool gprs_sns_fsm_registered = false

static

Referenced by gprs_ns_instantiate().

◆ ip_addr [1/3]

struct in6_addr ip_addr

Referenced by gprs_sns_st_configured(), ns2_sns_st_configured_delete(), and vty_dump_sns_ip6().

◆ ip_addr [2/3]

uint32_t gprs_ns_ie_ip4_elem::ip_addr

Referenced by create_missing_nsvcs(), create_nsvc_for_new_sbind(), do_sns_change_weight(), do_sns_delete(), gprs_nsvc_create_ip4(), gprs_sns_bss_fsm_alloc(), ns2_add_procedure(), ns2_get_sbind_ip4_entry(), ns2_nsvc_create_ip4(), ns2_sns_add_elements(), ns2_sns_st_local_procedure(), nsvc_by_ip4_elem(), remove_bind_elem(), update_ip4_elem(), update_remote_ip4_elem(), and vty_dump_sns_ip4().

◆ ip_addr [3/3]

struct in6_addr gprs_ns_ie_ip6_elem::ip_addr

Referenced by add_ip6_elem(), create_missing_nsvcs(), create_nsvc_for_new_sbind(), do_sns_change_weight(), do_sns_delete(), ns2_add_procedure(), ns2_get_sbind_ip6_entry(), ns2_nsvc_create_ip6(), ns2_sns_add_elements(), ns2_sns_st_local_procedure(), nsvc_by_ip6_elem(), remove_bind_elem(), update_ip6_elem(), and vty_dump_sns_ip6().

◆ ns_att_tlvdef

const struct tlv_definition ns_att_tlvdef

static

Initial value:

= {
        .def = {
                [NS_IE_CAUSE]   = { TLV_TYPE_TvLV, 0 },
                [NS_IE_VCI]     = { TLV_TYPE_TvLV, 0 },
                [NS_IE_PDU]     = { TLV_TYPE_TvLV, 0 },
                [NS_IE_BVCI]    = { TLV_TYPE_TvLV, 0 },
                [NS_IE_NSEI]    = { TLV_TYPE_TvLV, 0 },
                [NS_IE_IPv4_LIST] = { TLV_TYPE_TvLV, 0 },
                [NS_IE_IPv6_LIST] = { TLV_TYPE_TvLV, 0 },
                [NS_IE_MAX_NR_NSVC] = { TLV_TYPE_FIXED, 2 },
                [NS_IE_IPv4_EP_NR] = { TLV_TYPE_FIXED, 2 },
                [NS_IE_IPv6_EP_NR] = { TLV_TYPE_FIXED, 2 },
                [NS_IE_RESET_FLAG] = { TLV_TYPE_TV, 0 },
                
                [NS_IE_IP_ADDR] = { TLV_TYPE_FIXED, 5 },
        },
}

Referenced by gprs_ns_process_msg(), gprs_ns_rx_block(), gprs_ns_rx_reset(), gprs_ns_rx_reset_ack(), gprs_ns_rx_status(), and gprs_ns_vc_create().

◆ ns_att_tlvdef1

const struct tlv_definition ns_att_tlvdef1

static

Initial value:

= {
        .def = {
                [NS_IE_CAUSE]   = { TLV_TYPE_TvLV, 0 },
                [NS_IE_VCI]     = { TLV_TYPE_TvLV, 0 },
                [NS_IE_PDU]     = { TLV_TYPE_TvLV, 0 },
                [NS_IE_BVCI]    = { TLV_TYPE_TvLV, 0 },
                [NS_IE_NSEI]    = { TLV_TYPE_TvLV, 0 },
                [NS_IE_IPv4_LIST] = { TLV_TYPE_TvLV, 0 },
                [NS_IE_IPv6_LIST] = { TLV_TYPE_TvLV, 0 },
                [NS_IE_MAX_NR_NSVC] = { TLV_TYPE_FIXED, 2 },
                [NS_IE_IPv4_EP_NR] = { TLV_TYPE_FIXED, 2 },
                [NS_IE_IPv6_EP_NR] = { TLV_TYPE_FIXED, 2 },
                [NS_IE_RESET_FLAG] = { TLV_TYPE_TV, 0 },
                
                [NS_IE_IP_ADDR] = { TLV_TYPE_FIXED, 5 },
        },
}

Referenced by ns2_tlv_parse().

◆ ns_att_tlvdef2

const struct tlv_definition ns_att_tlvdef2

static

Initial value:

= {
        .def = {
                [NS_IE_CAUSE]   = { TLV_TYPE_TvLV, 0 },
                [NS_IE_VCI]     = { TLV_TYPE_TvLV, 0 },
                [NS_IE_PDU]     = { TLV_TYPE_TvLV, 0 },
                [NS_IE_BVCI]    = { TLV_TYPE_TvLV, 0 },
                [NS_IE_NSEI]    = { TLV_TYPE_TvLV, 0 },
                [NS_IE_IPv4_LIST] = { TLV_TYPE_TvLV, 0 },
                [NS_IE_IPv6_LIST] = { TLV_TYPE_TvLV, 0 },
                [NS_IE_MAX_NR_NSVC] = { TLV_TYPE_FIXED, 2 },
                [NS_IE_IPv4_EP_NR] = { TLV_TYPE_FIXED, 2 },
                [NS_IE_IPv6_EP_NR] = { TLV_TYPE_FIXED, 2 },
                [NS_IE_RESET_FLAG] = { TLV_TYPE_TV, 0 },
                
                [NS_IE_IP_ADDR] = { TLV_TYPE_FIXED, 17 },
        },
}

Referenced by ns2_tlv_parse().

◆ ns_cause_str

const struct value_string ns_cause_str[]

static

Initial value:

= {
        { NS_CAUSE_TRANSIT_FAIL,        "Transit network failure" },
        { NS_CAUSE_OM_INTERVENTION,     "O&M intervention" },
        { NS_CAUSE_EQUIP_FAIL,          "Equipment failure" },
        { NS_CAUSE_NSVC_BLOCKED,        "NS-VC blocked" },
        { NS_CAUSE_NSVC_UNKNOWN,        "NS-VC unknown" },
        { NS_CAUSE_BVCI_UNKNOWN,        "BVCI unknown" },
        { NS_CAUSE_SEM_INCORR_PDU,      "Semantically incorrect PDU" },
        { NS_CAUSE_PDU_INCOMP_PSTATE,   "PDU not compatible with protocol state" },
        { NS_CAUSE_PROTO_ERR_UNSPEC,    "Protocol error, unspecified" },
        { NS_CAUSE_INVAL_ESSENT_IE,     "Invalid essential IE" },
        { NS_CAUSE_MISSING_ESSENT_IE,   "Missing essential IE" },
        { NS_CAUSE_INVAL_NR_IPv4_EP,    "Invalid Number of IPv4 Endpoints" },
        { NS_CAUSE_INVAL_NR_IPv6_EP,    "Invalid Number of IPv6 Endpoints" },
        { NS_CAUSE_INVAL_NR_NS_VC,      "Invalid Number of NS-VCs" },
        { NS_CAUSE_INVAL_WEIGH,         "Invalid Weights" },
        { NS_CAUSE_UNKN_IP_EP,          "Unknown IP Endpoint" },
        { NS_CAUSE_UNKN_IP_ADDR,        "Unknown IP Address" },
        { NS_CAUSE_UNKN_IP_TEST_FAILED, "IP Test Failed" },
        { 0, NULL }
}

Referenced by gprs_ns_cause_str().

◆ ns_ctr_description

const struct rate_ctr_desc ns_ctr_description[]

static

Initial value:

= {
        [NS_CTR_PKTS_IN]        = { "packets:in",       "Packets at NS Level  ( In)" },
        [NS_CTR_PKTS_OUT]       = { "packets:out",      "Packets at NS Level  (Out)" },
        [NS_CTR_PKTS_OUT_DROP]  = { "packets:out:drop", "Dropped Packets      (Out)" },
        [NS_CTR_BYTES_IN]       = { "bytes:in",         "Bytes at NS Level    ( In)" },
        [NS_CTR_BYTES_OUT]      = { "bytes:out",        "Bytes at NS Level    (Out)" },
        [NS_CTR_BYTES_OUT_DROP] = { "bytes:out:drop",   "Dropped Bytes        (Out)" },
        [NS_CTR_BLOCKED]        = { "blocked",          "NS-VC Block count         " },
        [NS_CTR_UNBLOCKED]      = { "unblocked",        "NS-VC Unblock count       " },
        [NS_CTR_DEAD]           = { "dead",             "NS-VC gone dead count     " },
        [NS_CTR_REPLACED]       = { "replaced",         "NS-VC replaced other count" },
        [NS_CTR_NSEI_CHG]       = { "nsei-chg",         "NS-VC changed NSEI count  " },
        [NS_CTR_INV_VCI]        = { "inv-nsvci",        "NS-VCI was invalid count  " },
        [NS_CTR_INV_NSEI]       = { "inv-nsei",         "NSEI was invalid count    " },
        [NS_CTR_LOST_ALIVE]     = { "lost:alive",       "ALIVE ACK missing count   " },
        [NS_CTR_LOST_RESET]     = { "lost:reset",       "RESET ACK missing count   " },
}

◆ nsbind_stat_description

const struct osmo_stat_item_desc nsbind_stat_description[]

Initial value:

= {
        [NS2_BIND_STAT_BACKLOG_LEN] = { "tx_backlog_length",    "Transmit backlog length", "packets", 16, 0 },
}

◆ nsbind_statg_desc

const struct osmo_stat_item_group_desc nsbind_statg_desc

static

Initial value:

= {
        .group_name_prefix = "ns.bind",
        .group_description = "NS Bind Statistics",
        .num_items = ARRAY_SIZE(nsbind_stat_description),
        .item_desc = nsbind_stat_description,
        .class_id = OSMO_STATS_CLASS_PEER,
}

Referenced by ns2_bind_alloc().

◆ nse_ctrg_desc

const struct rate_ctr_group_desc nse_ctrg_desc

static

Initial value:

= {
        .group_name_prefix = "ns:nse",
        .group_description = "NSE Peer Statistics",
        .num_ctr = ARRAY_SIZE(ns_ctr_description),
        .ctr_desc = ns_ctr_description,
        .class_id = OSMO_STATS_CLASS_PEER,
}

Referenced by gprs_ns2_create_nse2().

◆ nsvc_ctr_description

const struct rate_ctr_desc nsvc_ctr_description[]

static

Initial value:

= {
        { "packets:in", "Packets at NS Level  ( In)" },
        { "packets:out","Packets at NS Level  (Out)" },
        { "bytes:in",   "Bytes at NS Level    ( In)" },
        { "bytes:out",  "Bytes at NS Level    (Out)" },
        { "blocked",    "NS-VC Block count         " },
        { "dead",       "NS-VC gone dead count     " },
        { "replaced",   "NS-VC replaced other count" },
        { "nsei-chg",   "NS-VC changed NSEI count  " },
        { "inv-nsvci",  "NS-VCI was invalid count  " },
        { "inv-nsei",   "NSEI was invalid count    " },
        { "lost:alive", "ALIVE ACK missing count   " },
        { "lost:reset", "RESET ACK missing count   " },
}

◆ nsvc_ctrg_desc [1/2]

const struct rate_ctr_group_desc nsvc_ctrg_desc

static

Initial value:

= {
        .group_name_prefix = "ns:nsvc",
        .group_description = "NSVC Peer Statistics",
        .num_ctr = ARRAY_SIZE(nsvc_ctr_description),
        .ctr_desc = nsvc_ctr_description,
        .class_id = OSMO_STATS_CLASS_PEER,
}

Referenced by gprs_nsvc_create2().

◆ nsvc_ctrg_desc [2/2]

const struct rate_ctr_group_desc nsvc_ctrg_desc

static

Initial value:

= {
        .group_name_prefix = "ns:nsvc",
        .group_description = "NSVC Peer Statistics",
        .num_ctr = ARRAY_SIZE(ns_ctr_description),
        .ctr_desc = ns_ctr_description,
        .class_id = OSMO_STATS_CLASS_PEER,
}

Referenced by ns2_vc_alloc().

◆ nsvc_stat_description [1/2]

const struct osmo_stat_item_desc nsvc_stat_description[]

static

Initial value:

= {
        { "alive.delay", "ALIVE response time        ", "ms", 16, 0 },
}

◆ nsvc_stat_description [2/2]

const struct osmo_stat_item_desc nsvc_stat_description[]

static

Initial value:

= {
        [NS_STAT_ALIVE_DELAY] = { "alive.delay", "ALIVE response time        ", "ms", 16, 0 },
}

◆ nsvc_statg_desc [1/2]

const struct osmo_stat_item_group_desc nsvc_statg_desc

static

Initial value:

= {
        .group_name_prefix = "ns.nsvc",
        .group_description = "NSVC Peer Statistics",
        .num_items = ARRAY_SIZE(nsvc_stat_description),
        .item_desc = nsvc_stat_description,
        .class_id = OSMO_STATS_CLASS_PEER,
}

Referenced by gprs_nsvc_create2().

◆ nsvc_statg_desc [2/2]

const struct osmo_stat_item_group_desc nsvc_statg_desc

static

Initial value:

= {
        .group_name_prefix = "ns.nsvc",
        .group_description = "NSVC Peer Statistics",
        .num_items = ARRAY_SIZE(nsvc_stat_description),
        .item_desc = nsvc_stat_description,
        .class_id = OSMO_STATS_CLASS_PEER,
}

Referenced by ns2_vc_alloc().

◆ pdu_type [1/2]

uint8_t pdu_type

NS PDU type.

Referenced by bssgp_pdu_type_flags(), bssgp_rcvmsg(), bssgp_rx_ptp(), bssgp_rx_sign(), bssgp_tx_simple_bvci(), gprs_ns_tx_simple(), ns2_tx_simple(), ns2_validate(), ns_is_sns(), and ns_osmo_signal_dispatch_mismatch().

◆ pdu_type [2/2]

◆ sig_weight [1/3]

uint8_t sig_weight

Referenced by DEFUN(), gprs_nsvc_create2(), ns2_vc_create_ip(), and ns_nse_nsvc_udp_cmds().

◆ sig_weight [2/3]

uint8_t gprs_ns_ie_ip4_elem::sig_weight

Referenced by create_missing_nsvcs(), create_nsvc_for_new_sbind(), do_sns_change_weight(), gprs_nsvc_create_ip4(), gprs_sns_bss_fsm_alloc(), ip4_weight_sum(), ns2_add_procedure(), ns2_nsvc_create_ip4(), ns2_sns_add_elements(), ns2_sns_st_local_procedure(), ns2_update_weight_entry(), remove_bind_elem(), update_ip4_elem(), update_remote_ip4_elem(), and vty_dump_sns_ip4().

◆ sig_weight [3/3]

uint8_t gprs_ns_ie_ip6_elem::sig_weight

Referenced by create_missing_nsvcs(), create_nsvc_for_new_sbind(), do_sns_change_weight(), ip6_weight_sum(), ns2_add_procedure(), ns2_nsvc_create_ip6(), ns2_sns_add_elements(), ns2_sns_st_local_procedure(), ns2_update_weight_entry(), remove_bind_elem(), update_ip6_elem(), and vty_dump_sns_ip6().

◆ timer_mode_strs

const struct value_string timer_mode_strs[]

static

Initial value:

= {
        { NSVC_TIMER_TNS_RESET, "tns-reset" },
        { NSVC_TIMER_TNS_ALIVE, "tns-alive" },
        { NSVC_TIMER_TNS_TEST, "tns-test" },
        { 0, NULL }
}

Referenced by gprs_ns_timer_cb(), and nsvc_start_timer().

◆ timer_mode_tout

enum ns_timeout timer_mode_tout[_NSVC_TIMER_NR]

static

Initial value:

= {
        [NSVC_TIMER_TNS_RESET]  = NS_TOUT_TNS_RESET,
        [NSVC_TIMER_TNS_ALIVE]  = NS_TOUT_TNS_ALIVE,
        [NSVC_TIMER_TNS_TEST]   = NS_TOUT_TNS_TEST,
}

Referenced by gprs_ns_timer_cb(), and nsvc_start_timer().

◆ udp_port [1/3]

uint16_t udp_port

◆ udp_port [2/3]

uint16_t gprs_ns_ie_ip4_elem::udp_port

Referenced by create_missing_nsvcs(), create_nsvc_for_new_sbind(), do_sns_change_weight(), do_sns_delete(), gprs_nsvc_create_ip4(), gprs_sns_bss_fsm_alloc(), ns2_add_procedure(), ns2_get_sbind_ip4_entry(), ns2_nsvc_create_ip4(), ns2_sns_add_elements(), ns2_sns_st_local_procedure(), nsvc_by_ip4_elem(), remove_bind_elem(), update_ip4_elem(), update_remote_ip4_elem(), and vty_dump_sns_ip4().

◆ udp_port [3/3]

uint16_t gprs_ns_ie_ip6_elem::udp_port

Referenced by add_ip6_elem(), create_missing_nsvcs(), create_nsvc_for_new_sbind(), do_sns_change_weight(), do_sns_delete(), ns2_add_procedure(), ns2_get_sbind_ip6_entry(), ns2_nsvc_create_ip6(), ns2_sns_add_elements(), ns2_sns_st_local_procedure(), nsvc_by_ip6_elem(), remove_bind_elem(), update_ip6_elem(), and vty_dump_sns_ip6().

Files

Data Structures

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ CHECK_TX_RC

◆ ERR_IF_NSVC_USES_SNS

◆ NS2_LL_MAX_STR

◆ ns_mark_alive [1/2]

◆ ns_mark_alive [2/2]

◆ ns_mark_blocked [1/2]

◆ ns_mark_blocked [2/2]

◆ ns_mark_dead [1/2]

◆ ns_mark_dead [2/2]

◆ ns_mark_unblocked [1/2]

◆ ns_mark_unblocked [2/2]

◆ ns_set_remote_state [1/2]

◆ ns_set_remote_state [2/2]

◆ ns_set_state [1/2]

◆ ns_set_state [2/2]

Enumeration Type Documentation

◆ ns_cause

◆ ns_ctr

◆ ns_ctrl_ie

◆ ns_pdu_type

◆ ns_stat

Function Documentation

◆ __attribute__()

◆ add_bind_array()

◆ gprs_active_nsvc_by_nsei()

◆ gprs_ns2_bind_by_name()

◆ gprs_ns2_create_nse()

◆ gprs_ns2_create_nse2()

◆ gprs_ns2_free()

◆ gprs_ns2_free_bind()

◆ gprs_ns2_free_binds()

◆ gprs_ns2_free_nse()

◆ gprs_ns2_free_nses()

◆ gprs_ns2_free_nsvc()

◆ gprs_ns2_free_nsvcs()

◆ gprs_ns2_instantiate()

◆ gprs_ns2_ip_connect()

◆ gprs_ns2_ip_connect2()

◆ gprs_ns2_ip_connect_inactive()

◆ gprs_ns2_ll_str()

◆ gprs_ns2_ll_str_buf()

◆ gprs_ns2_ll_str_c()

◆ gprs_ns2_nse_by_nsei()

◆ gprs_ns2_nse_foreach_nsvc()

◆ gprs_ns2_nse_nsei()

◆ gprs_ns2_nsvc_by_nsvci()

◆ gprs_ns2_nsvc_by_sockaddr_nse()

◆ gprs_ns2_nsvc_state_name()

◆ gprs_ns2_recv_prim()

◆ gprs_ns2_start_alive_all_nsvcs()

◆ gprs_ns_cause_str()

◆ gprs_ns_close()

◆ gprs_ns_destroy()

◆ gprs_ns_instantiate()

◆ gprs_ns_ll_clear()

◆ gprs_ns_ll_copy()

◆ gprs_ns_ll_str()

◆ gprs_ns_ll_str_buf()

◆ gprs_ns_ll_str_c()

◆ gprs_ns_msgb_alloc()

◆ gprs_ns_nsip_connect()

◆ gprs_ns_nsip_connect_sns()

◆ gprs_ns_nsip_listen()

◆ gprs_ns_process_msg()

◆ gprs_ns_rcvmsg()

◆ gprs_ns_rx_block()

◆ gprs_ns_rx_reset()

◆ gprs_ns_rx_reset_ack()

◆ gprs_ns_rx_status()

◆ gprs_ns_rx_unitdata()

◆ gprs_ns_sendmsg()

◆ gprs_ns_set_log_ss()

◆ attribute()

◆ attribute