1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/staging/batman-adv/bitarray.h b/drivers/staging/batman-adv/bitarray.h
new file mode 100644
index 000000000000..ec72dd784362
--- /dev/null
+++ b/drivers/staging/batman-adv/bitarray.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2006-2009 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
+ *
+ */
+
+
+/* you should choose something big, if you don't want to waste cpu */
+#define TYPE_OF_WORD unsigned long
+#define WORD_BIT_SIZE (sizeof(TYPE_OF_WORD) * 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(TYPE_OF_WORD *seq_bits, uint16_t last_seqno,
+					   uint16_t curr_seqno);
+
+/* turn corresponding bit on, so we can remember that we got the packet */
+void bit_mark(TYPE_OF_WORD *seq_bits, int32_t n);
+
+/* shift the packet array by n places. */
+void bit_shift(TYPE_OF_WORD *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(TYPE_OF_WORD *seq_bits, int16_t seq_num_diff,
+					int8_t set_mark);
+
+/* count the hamming weight, how many good packets did we receive? */
+int  bit_packet_count(TYPE_OF_WORD *seq_bits);