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author | Sven Eckelmann <sven@narfation.org> | 2010-12-13 11:19:28 +0000 |
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committer | David S. Miller <davem@davemloft.net> | 2010-12-16 13:44:24 -0800 |
commit | c6c8fea29769d998d94fcec9b9f14d4b52b349d3 (patch) | |
tree | 2c8dc8d1a64d48c5737a5745e3c510ff53a23047 /net/batman-adv/ring_buffer.c | |
parent | b236da6931e2482bfe44a7865dd4e7bb036f3496 (diff) | |
download | linux-3.10-c6c8fea29769d998d94fcec9b9f14d4b52b349d3.tar.gz linux-3.10-c6c8fea29769d998d94fcec9b9f14d4b52b349d3.tar.bz2 linux-3.10-c6c8fea29769d998d94fcec9b9f14d4b52b349d3.zip |
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/ring_buffer.c')
-rw-r--r-- | net/batman-adv/ring_buffer.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/net/batman-adv/ring_buffer.c b/net/batman-adv/ring_buffer.c new file mode 100644 index 00000000000..defd37c9be1 --- /dev/null +++ b/net/batman-adv/ring_buffer.c @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: + * + * 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 + * + */ + +#include "main.h" +#include "ring_buffer.h" + +void ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index, uint8_t value) +{ + lq_recv[*lq_index] = value; + *lq_index = (*lq_index + 1) % TQ_GLOBAL_WINDOW_SIZE; +} + +uint8_t ring_buffer_avg(uint8_t lq_recv[]) +{ + uint8_t *ptr; + uint16_t count = 0, i = 0, sum = 0; + + ptr = lq_recv; + + while (i < TQ_GLOBAL_WINDOW_SIZE) { + if (*ptr != 0) { + count++; + sum += *ptr; + } + + i++; + ptr++; + } + + if (count == 0) + return 0; + + return (uint8_t)(sum / count); +} |