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authorSven Eckelmann <sven@narfation.org>2010-12-13 14:19:28 +0300
committerDavid S. Miller <davem@davemloft.net>2010-12-17 00:44:24 +0300
commitc6c8fea29769d998d94fcec9b9f14d4b52b349d3 (patch)
tree2c8dc8d1a64d48c5737a5745e3c510ff53a23047 /net/batman-adv/bitarray.h
parentb236da6931e2482bfe44a7865dd4e7bb036f3496 (diff)
downloadlinux-c6c8fea29769d998d94fcec9b9f14d4b52b349d3.tar.xz
net: Add batman-adv meshing protocol
B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is a routing protocol for multi-hop ad-hoc mesh networks. The networks may be wired or wireless. See http://www.open-mesh.org/ for more information and user space tools. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/batman-adv/bitarray.h')
-rw-r--r--net/batman-adv/bitarray.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/net/batman-adv/bitarray.h b/net/batman-adv/bitarray.h
new file mode 100644
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+++ b/net/batman-adv/bitarray.h
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+/*
+ * Copyright (C) 2006-2010 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 */
+uint8_t get_bit_status(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 */
+char bit_get_packet(void *priv, unsigned long *seq_bits,
+ int32_t seq_num_diff, int8_t set_mark);
+
+/* count the hamming weight, how many good packets did we receive? */
+int bit_packet_count(unsigned long *seq_bits);
+
+#endif /* _NET_BATMAN_ADV_BITARRAY_H_ */