/**
* batadv_test_bit - check if bit is set in the current window
*
* @seq_bits: pointer to the sequence number receive packet
* @last_seqno: latest sequence number in seq_bits
* @curr_seqno: sequence number to test for
*
* Return: true if the corresponding bit in the given seq_bits indicates true
* and curr_seqno is within range of last_seqno. Otherwise returns false.
*/
static inline bool batadv_test_bit(const unsigned long *seq_bits,
u32 last_seqno, u32 curr_seqno)
{
s32 diff;
diff = last_seqno - curr_seqno;
if (diff < 0 || diff >= BATADV_TQ_LOCAL_WINDOW_SIZE)
return false;
return test_bit(diff, seq_bits) != 0;
}
/* turn corresponding bit on, so we can remember that we got the packet */
static inline void batadv_set_bit(unsigned long *seq_bits, s32 n)
{
/* if too old, just drop it */
if (n < 0 || n >= BATADV_TQ_LOCAL_WINDOW_SIZE)
return;
set_bit(n, seq_bits); /* turn the position on */
}
bool batadv_bit_get_packet(void *priv, unsigned long *seq_bits,
s32 seq_num_diff, int set_mark);
#endif /* _NET_BATMAN_ADV_BITARRAY_H_ */
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