kernel / pub / scm / linux / kernel / git / ohad / amp / 89cfc99177c9270c5c6d429f6c5177ab3428ad57 / . / net / batman-adv / bitarray.h

/* | |

* Copyright (C) 2006-2011 B.A.T.M.A.N. contributors: | |

* | |

* Simon Wunderlich, Marek Lindner | |

* | |

* This program is free software; you can redistribute it and/or | |

* modify it under the terms of version 2 of the GNU General Public | |

* License as published by the Free Software Foundation. | |

* | |

* This program is distributed in the hope that it will be useful, but | |

* WITHOUT ANY WARRANTY; without even the implied warranty of | |

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |

* General Public License for more details. | |

* | |

* You should have received a copy of the GNU General Public License | |

* along with this program; if not, write to the Free Software | |

* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |

* 02110-1301, USA | |

* | |

*/ | |

#ifndef _NET_BATMAN_ADV_BITARRAY_H_ | |

#define _NET_BATMAN_ADV_BITARRAY_H_ | |

#define WORD_BIT_SIZE (sizeof(unsigned long) * 8) | |

/* returns true if the corresponding bit in the given seq_bits indicates true | |

* and curr_seqno is within range of last_seqno */ | |

int get_bit_status(const unsigned long *seq_bits, uint32_t last_seqno, | |

uint32_t curr_seqno); | |

/* turn corresponding bit on, so we can remember that we got the packet */ | |

void bit_mark(unsigned long *seq_bits, int32_t n); | |

/* receive and process one packet, returns 1 if received seq_num is considered | |

* new, 0 if old */ | |

int bit_get_packet(void *priv, unsigned long *seq_bits, | |

int32_t seq_num_diff, int set_mark); | |

/* count the hamming weight, how many good packets did we receive? */ | |

int bit_packet_count(const unsigned long *seq_bits); | |

#endif /* _NET_BATMAN_ADV_BITARRAY_H_ */ |