fb.h

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/*
 * SPDX-FileCopyrightText: 2019 Freie Universität Berlin
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once

 
#include <stdbool.h>
#include <stdint.h>
 
#include "msg.h"
#include "net/gnrc/pkt.h"
#ifdef MODULE_GNRC_SIXLOWPAN_FRAG_HINT
#include "net/gnrc/sixlowpan/frag/hint.h"
#endif /* MODULE_GNRC_SIXLOWPAN_FRAG_HINT */
#if IS_USED(MODULE_GNRC_SIXLOWPAN_FRAG_SFR)
#include "net/gnrc/sixlowpan/frag/sfr_types.h"
#endif
 
#ifdef __cplusplus
extern "C" {
#endif

#define GNRC_SIXLOWPAN_FRAG_FB_SND_MSG      (0x0225)

typedef struct {
    gnrc_pktsnip_t *pkt;    
    uint16_t datagram_size;
    uint16_t tag;           
    uint16_t offset;        
#if IS_USED(MODULE_GNRC_SIXLOWPAN_FRAG_SFR)
    gnrc_sixlowpan_frag_sfr_fb_t sfr;
#endif  /* IS_USED(MODULE_GNRC_SIXLOWPAN_FRAG_SFR) */
#ifdef MODULE_GNRC_SIXLOWPAN_FRAG_HINT
    gnrc_sixlowpan_frag_hint_t hint;
#endif /* MODULE_GNRC_SIXLOWPAN_FRAG_HINT */
} gnrc_sixlowpan_frag_fb_t;
 
#ifdef TEST_SUITES
void gnrc_sixlowpan_frag_fb_reset(void);
#endif

gnrc_sixlowpan_frag_fb_t *gnrc_sixlowpan_frag_fb_get(void);

gnrc_sixlowpan_frag_fb_t *gnrc_sixlowpan_frag_fb_get_by_tag(uint16_t tag);

uint16_t gnrc_sixlowpan_frag_fb_next_tag(void);
 
#if defined(TEST_SUITES) && !defined(DOXYGEN)
#include "sched.h"
 
/* can't include `net/sixlowpan.h` as this would create a cyclical include */
extern kernel_pid_t gnrc_sixlowpan_get_pid(void);
#endif

static inline bool gnrc_sixlowpan_frag_fb_send(gnrc_sixlowpan_frag_fb_t *fbuf)
{
    msg_t msg;
 
    msg.content.ptr = fbuf;
    msg.type = GNRC_SIXLOWPAN_FRAG_FB_SND_MSG;
#ifdef TEST_SUITES
    return (msg_try_send(&msg, gnrc_sixlowpan_get_pid()) > 0);
#else
    return (msg_send_to_self(&msg) != 0);
#endif
}
 
#ifdef __cplusplus
}
#endif