vrb.h

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

 
#include <stddef.h>
#include <stdbool.h>
#include <stdint.h>
 
#include "compiler_hints.h"
#include "modules.h"
#include "net/gnrc/netif.h"
#include "net/gnrc/sixlowpan/config.h"
#include "net/gnrc/sixlowpan/frag/rb.h"
 
#ifdef MODULE_GNRC_SIXLOWPAN_FRAG
#  include "net/gnrc/sixlowpan/frag.h"
#endif /* MODULE_GNRC_SIXLOWPAN_FRAG */
 
#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
    gnrc_sixlowpan_frag_rb_base_t super;    
    gnrc_netif_t *out_netif;
    uint16_t out_tag;
#if IS_USED(MODULE_GNRC_SIXLOWPAN_FRAG_SFR)
    int16_t offset_diff;    
    gnrc_netif_t *in_netif;
#endif  /* IS_USED(MODULE_GNRC_SIXLOWPAN_FRAG_SFR) */
} gnrc_sixlowpan_frag_vrb_t;

ACCESS(read_only, 3, 4)
gnrc_sixlowpan_frag_vrb_t *gnrc_sixlowpan_frag_vrb_add(
        const gnrc_sixlowpan_frag_rb_base_t *base,
        gnrc_netif_t *out_netif, const uint8_t *out_dst, size_t out_dst_len);

gnrc_sixlowpan_frag_vrb_t *gnrc_sixlowpan_frag_vrb_from_route(
            const gnrc_sixlowpan_frag_rb_base_t *base,
            gnrc_netif_t *netif, const gnrc_pktsnip_t *hdr);

void gnrc_sixlowpan_frag_vrb_gc(void);

ACCESS(read_only, 1, 2)
gnrc_sixlowpan_frag_vrb_t *gnrc_sixlowpan_frag_vrb_get(
        const uint8_t *src, size_t src_len, unsigned src_tag);

ACCESS(read_only, 2, 3)
gnrc_sixlowpan_frag_vrb_t *gnrc_sixlowpan_frag_vrb_reverse(
        const gnrc_netif_t *netif, const uint8_t *src, size_t src_len,
        unsigned tag);

static inline void gnrc_sixlowpan_frag_vrb_rm(gnrc_sixlowpan_frag_vrb_t *vrb)
{
    if (IS_USED(MODULE_GNRC_SIXLOWPAN_FRAG_RB)) {
        gnrc_sixlowpan_frag_rb_base_rm(&vrb->super);
    }
    vrb->super.src_len = 0;
}

static inline bool gnrc_sixlowpan_frag_vrb_entry_empty(gnrc_sixlowpan_frag_vrb_t *vrb)
{
    return (vrb->super.src_len == 0);
}
 
#if defined(TEST_SUITES) || defined(DOXYGEN)
void gnrc_sixlowpan_frag_vrb_reset(void);
#endif
 
#ifdef __cplusplus
}
#endif