prim.h

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#pragma once

#include <stdint.h>
#include <osmocom/core/msgb.h>

#define OSMO_PRIM(prim, op)     ((prim << 8) | (op & 0xFF))
#define OSMO_PRIM_HDR(oph)      OSMO_PRIM((oph)->primitive, (oph)->operation)

enum osmo_prim_operation {
        PRIM_OP_REQUEST,        
        PRIM_OP_RESPONSE,       
        PRIM_OP_INDICATION,     
        PRIM_OP_CONFIRM,        
};

extern const struct value_string osmo_prim_op_names[5];

#define _SAP_GSM_SHIFT  24

#define _SAP_GSM_BASE   (0x01 << _SAP_GSM_SHIFT)
#define _SAP_TETRA_BASE (0x02 << _SAP_GSM_SHIFT)
#define _SAP_SS7_BASE   (0x03 << _SAP_GSM_SHIFT)

struct osmo_prim_hdr {
        unsigned int sap;       
        unsigned int primitive; 
        enum osmo_prim_operation operation; 
        struct msgb *msg;       
};

static inline void
osmo_prim_init(struct osmo_prim_hdr *oph, unsigned int sap,
                unsigned int primitive, enum osmo_prim_operation operation,
                struct msgb *msg)
{
        oph->sap = sap;
        oph->primitive = primitive;
        oph->operation = operation;
        oph->msg = msg;
}

typedef int (*osmo_prim_cb)(struct osmo_prim_hdr *oph, void *ctx);