cluster/ec: Added erasure code translator

Change-Id: I293917501d5c2ca4cdc6303df30cf0b568cea361
BUG: 1118629
Signed-off-by: Xavier Hernandez <xhernandez@datalab.es>
Reviewed-on: http://review.gluster.org/7749
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/xlators/cluster/ec/src/ec-method.h b/xlators/cluster/ec/src/ec-method.h
new file mode 100644
index 00000000000..64e724ff3f0
--- /dev/null
+++ b/xlators/cluster/ec/src/ec-method.h
@@ -0,0 +1,42 @@
+/*
+  Copyright (c) 2012 DataLab, s.l. <http://www.datalab.es>
+
+  This file is part of the cluster/ec translator for GlusterFS.
+
+  The cluster/ec translator for GlusterFS is free software: you can
+  redistribute it and/or modify it under the terms of the GNU General
+  Public License as published by the Free Software Foundation, either
+  version 3 of the License, or (at your option) any later version.
+
+  The cluster/ec translator for GlusterFS 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 the cluster/ec translator for GlusterFS. If not, see
+  <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __EC_METHOD_H__
+#define __EC_METHOD_H__
+
+#include "ec-gf.h"
+
+#define EC_METHOD_MAX_FRAGMENTS 16
+
+#define EC_METHOD_WORD_SIZE 16
+
+#define EC_BUFFER_ALIGN_SIZE EC_METHOD_WORD_SIZE
+
+#define EC_METHOD_BITS EC_GF_BITS
+#define EC_METHOD_SIZE (1 << (EC_METHOD_BITS))
+#define EC_METHOD_CHUNK_SIZE (EC_METHOD_WORD_SIZE * EC_METHOD_BITS)
+
+void ec_method_initialize(void);
+size_t ec_method_encode(size_t size, uint32_t columns, uint32_t row,
+                        uint8_t * in, uint8_t * out);
+size_t ec_method_decode(size_t size, uint32_t columns, uint32_t * rows,
+                        uint8_t ** in, uint8_t * out);
+
+#endif /* __EC_METHOD_H__ */