/**
Apply the transform to a buffer starting at "data". That buffer MUST be ROZOFS_BSIZE
aligned.
The first_block_idx is the index of a ROZOFS_BSIZE array in the output buffer
The number_of_blocks is the number of ROZOFS_BSIZE that must be transform
Notice that the first_block_idx offset applies to the output transform buffer only
not to the input buffer pointed by "data".
*
* @param *prj_ctx_p: pointer to the working array of the projection
* @param first_block_idx: index of the first block to transform
* @param number_of_blocks: number of blocks to write
* @param timestamp: date in microseconds
@param last_block_size: effective length of the last block
* @param *data: pointer to the source data that must be transformed
*
* @return: the length written on success, -1 otherwise (errno is set)
*/
int rozofs_storcli_transform_forward(rozofs_storcli_projection_ctx_t *prj_ctx_p,
uint8_t layout,uint32_t bsize,
uint32_t first_block_idx,
uint32_t number_of_blocks,
uint64_t timestamp,
uint16_t last_block_size,
char *data)
{
projection_t rozofs_fwd_projections[ROZOFS_SAFE_MAX_STORCLI];
projection_t *projections; // Table of projections used to transform data
uint16_t projection_id = 0;
uint32_t i = 0;
uint8_t rozofs_forward = rozofs_get_rozofs_forward(layout);
uint8_t rozofs_inverse = rozofs_get_rozofs_inverse(layout);
int empty_block = 0;
uint32_t bbytes = ROZOFS_BSIZE_BYTES(bsize);
projections = rozofs_fwd_projections;
int prj_size_in_msg = rozofs_get_max_psize_in_msg(layout,bsize);
/* Transform the data */
// For each block to send
for (i = 0; i < number_of_blocks; i++)
{
empty_block = rozofs_data_block_check_empty(data + (i * bbytes), bbytes);
// seek bins for each projection
for (projection_id = 0; projection_id < rozofs_forward; projection_id++)
{
/*
** Indicates the memory area where the transformed data must be stored
*/
projections[projection_id].bins = prj_ctx_p[projection_id].bins
+ (prj_size_in_msg/sizeof(bin_t)) * (first_block_idx+i);
rozofs_stor_bins_hdr_t *rozofs_bins_hdr_p = (rozofs_stor_bins_hdr_t*)projections[projection_id].bins;
rozofs_stor_bins_footer_t *rozofs_bins_foot_p = (rozofs_stor_bins_footer_t*)
((bin_t*)(rozofs_bins_hdr_p+1)+
rozofs_get_psizes(layout,bsize,projection_id));
/*
** check if the user data block is empty: if the data block is empty no need to transform
*/
if (empty_block)
{
rozofs_bins_hdr_p->s.projection_id = 0;
rozofs_bins_hdr_p->s.timestamp = 0;
rozofs_bins_hdr_p->s.effective_length = 0;
rozofs_bins_hdr_p->s.filler = 0;
rozofs_bins_hdr_p->s.version = 0;
continue;
}
/*
** fill the header of the projection
*/
rozofs_bins_hdr_p->s.projection_id = projection_id;
rozofs_bins_hdr_p->s.timestamp = timestamp;
rozofs_bins_hdr_p->s.filler = 0;
rozofs_bins_hdr_p->s.version = 0;
/*
** set the effective size of the block. It is always ROZOFS_BSIZE except for the last block
*/
if (i == (number_of_blocks-1))
{
rozofs_bins_hdr_p->s.effective_length = last_block_size;
}
else
{
rozofs_bins_hdr_p->s.effective_length = bbytes;
}
/*
** update the pointer to point out the first bins
*/
projections[projection_id].bins += sizeof(rozofs_stor_bins_hdr_t)/sizeof(bin_t);
rozofs_bins_foot_p = (rozofs_stor_bins_footer_t*) (projections[projection_id].bins
+ rozofs_get_psizes(layout,bsize,projection_id));
rozofs_bins_foot_p->timestamp = timestamp;
}
/*
** do not apply transform for empty block
*/
if (empty_block == 0)
{
transform_forward_proc(layout,data + (i * bbytes),bbytes,projections);
}
}
return 0;
}
/**
Apply the transform to a buffer starting at "data". That buffer MUST be ROZOFS_BSIZE
aligned.
The first_block_idx is the index of a ROZOFS_BSIZE array in the output buffer
The number_of_blocks is the number of ROZOFS_BSIZE that must be transform
Notice that the first_block_idx offset applies to the output transform buffer only
not to the input buffer pointed by "data".
*
* @param *working_ctx_p: storcli working context
* @param number_of_blocks: number of blocks to write
* @param *data: pointer to the source data that must be transformed
*
* @return: the length written on success, -1 otherwise (errno is set)
*/
void rozofs_storcli_transform_forward_repair(rozofs_storcli_ctx_t *working_ctx_p,
uint8_t layout,
uint32_t number_of_blocks,
char *data)
{
projection_t rozofs_fwd_projections[ROZOFS_SAFE_MAX_STORCLI];
projection_t *projections; // Table of projections used to transform data
uint16_t projection_id = 0;
uint32_t i = 0;
uint8_t rozofs_forward = rozofs_get_rozofs_forward(layout);
uint8_t rozofs_safe = rozofs_get_rozofs_forward(layout);
uint8_t rozofs_inverse = rozofs_get_rozofs_inverse(layout);
rozofs_storcli_projection_ctx_t *prj_ctx_p = &working_ctx_p->prj_ctx[0];
int empty_block = 0;
uint8_t sid;
int moj_prj_id;
int block_idx;
int k;
storcli_read_arg_t *storcli_read_rq_p = (storcli_read_arg_t*)&working_ctx_p->storcli_read_arg;
uint8_t bsize = storcli_read_rq_p->bsize;
uint32_t bbytes = ROZOFS_BSIZE_BYTES(bsize);
int prj_size_in_msg = rozofs_get_max_psize_in_msg(layout,bsize);
projections = rozofs_fwd_projections;
// For each projection
for (projection_id = 0; projection_id < rozofs_forward; projection_id++) {
projections[projection_id].angle.p = rozofs_get_angles_p(layout,projection_id);
projections[projection_id].angle.q = rozofs_get_angles_q(layout,projection_id);
projections[projection_id].size = rozofs_get_128bits_psizes(layout,bsize,projection_id);
}
/*
** now go through all projection set to find out if there is something to regenerate
*/
for (k = 0; k < rozofs_safe; k++)
{
block_idx = 0;
if (ROZOFS_BITMAP64_TEST_ALL0(prj_ctx_p[k].crc_err_bitmap)) continue;
/*
** Get the sid associated with the projection context
*/
sid = (uint8_t) rozofs_storcli_lbg_prj_get_sid(working_ctx_p->lbg_assoc_tb,
prj_ctx_p[k].stor_idx);
/*
** Get the reference of the Mojette projection_id
*/
moj_prj_id = rozofs_storcli_get_mojette_proj_id(storcli_read_rq_p->dist_set,sid,rozofs_forward);
if (moj_prj_id < 0)
{
/*
** it is the reference of a spare sid, so go to the next projection context
*/
continue;
}
for (i = 0; i < number_of_blocks; i++)
{
if (ROZOFS_BITMAP64_TEST0(i,prj_ctx_p[k].crc_err_bitmap))
{
/*
** nothing to generate for that block
*/
continue;
}
/*
** check for empty block
*/
empty_block = rozofs_data_block_check_empty(data + (i * bbytes), bbytes);
/**
* regenerate the projection for the block for which a crc error has been detected
*/
//CRC projections[moj_prj_id].bins = prj_ctx_p[moj_prj_id].bins +
projections[moj_prj_id].bins = prj_ctx_p[k].bins +
(prj_size_in_msg/sizeof(bin_t)* (0+block_idx));
rozofs_stor_bins_hdr_t *rozofs_bins_hdr_p = (rozofs_stor_bins_hdr_t*)projections[moj_prj_id].bins;
/*
** check if the user data block is empty: if the data block is empty no need to transform
*/
if (empty_block)
{
rozofs_bins_hdr_p->s.projection_id = 0;
rozofs_bins_hdr_p->s.timestamp = 0;
rozofs_bins_hdr_p->s.effective_length = 0;
rozofs_bins_hdr_p->s.filler = 0;
rozofs_bins_hdr_p->s.version = 0;
block_idx++;
continue;
}
/*
** fill the header of the projection
*/
rozofs_bins_hdr_p->s.projection_id = moj_prj_id;
//CRC rozofs_bins_hdr_p->s.timestamp = working_ctx_p->block_ctx_table[block_idx].timestamp;
rozofs_bins_hdr_p->s.timestamp = working_ctx_p->block_ctx_table[i].timestamp;
//CRC rozofs_bins_hdr_p->s.effective_length = working_ctx_p->block_ctx_table[block_idx].effective_length;
rozofs_bins_hdr_p->s.effective_length = working_ctx_p->block_ctx_table[i].effective_length;
rozofs_bins_hdr_p->s.filler = 0;
rozofs_bins_hdr_p->s.version = 0;
/*
** update the pointer to point out the first bins
*/
projections[moj_prj_id].bins += sizeof(rozofs_stor_bins_hdr_t)/sizeof(bin_t);
/*
** do not apply transform for empty block
*/
if (empty_block == 0)
{
/*
** Apply the erasure code transform for the block i
*/
transform128_forward_one_proj((pxl_t *) (data + (i * bbytes)),
rozofs_inverse,
bbytes / rozofs_inverse / sizeof (pxl_t),
moj_prj_id, projections);
/*
** add the footer at the end of the repaired projection
*/
rozofs_stor_bins_footer_t *rozofs_bins_foot_p;
rozofs_bins_foot_p = (rozofs_stor_bins_footer_t*) (projections[moj_prj_id].bins
+ rozofs_get_psizes(layout,bsize,moj_prj_id));
//CRC rozofs_bins_foot_p->timestamp = working_ctx_p->block_ctx_table[block_idx].timestamp;
rozofs_bins_foot_p->timestamp = rozofs_bins_hdr_p->s.timestamp;
}
block_idx++;
}
}
}
/**
Apply the transform to a buffer starting at "data". That buffer MUST be ROZOFS_BSIZE
aligned.
The first_block_idx is the index of a ROZOFS_BSIZE array in the output buffer
The number_of_blocks is the number of ROZOFS_BSIZE that must be transform
Notice that the first_block_idx offset applies to the output transform buffer only
not to the input buffer pointed by "data".
*
* @param *prj_ctx_p: pointer to the working array of the projection
* @param first_block_idx: index of the first block to transform
* @param number_of_blocks: number of blocks to write
* @param timestamp: date in microseconds
@param last_block_size: effective length of the last block
* @param *data: pointer to the source data that must be transformed
*
* @return: the length written on success, -1 otherwise (errno is set)
*/
int rozofs_storcli_transform_forward(rozofs_storcli_projection_ctx_t *prj_ctx_p,
uint8_t layout,
uint32_t first_block_idx,
uint32_t number_of_blocks,
uint64_t timestamp,
uint16_t last_block_size,
char *data)
{
projection_t rozofs_fwd_projections[ROZOFS_SAFE_MAX];
projection_t *projections; // Table of projections used to transform data
uint16_t projection_id = 0;
uint32_t i = 0;
uint8_t rozofs_forward = rozofs_get_rozofs_forward(layout);
uint8_t rozofs_inverse = rozofs_get_rozofs_inverse(layout);
int empty_block = 0;
projections = rozofs_fwd_projections;
// For each projection
for (projection_id = 0; projection_id < rozofs_forward; projection_id++) {
projections[projection_id].angle.p = rozofs_get_angles_p(layout,projection_id);
projections[projection_id].angle.q = rozofs_get_angles_q(layout,projection_id);
projections[projection_id].size = rozofs_get_psizes(layout,projection_id);
}
/* Transform the data */
// For each block to send
for (i = 0; i < number_of_blocks; i++)
{
empty_block = rozofs_data_block_check_empty(data + (i * ROZOFS_BSIZE), ROZOFS_BSIZE);
// seek bins for each projection
for (projection_id = 0; projection_id < rozofs_forward; projection_id++)
{
/*
** Indicates the memory area where the transformed data must be stored
*/
projections[projection_id].bins = prj_ctx_p[projection_id].bins +
((rozofs_get_max_psize(layout)+(sizeof(rozofs_stor_bins_hdr_t)/sizeof(bin_t)))* (first_block_idx+i));
rozofs_stor_bins_hdr_t *rozofs_bins_hdr_p = (rozofs_stor_bins_hdr_t*)projections[projection_id].bins;
/*
** check if the user data block is empty: if the data block is empty no need to transform
*/
if (empty_block)
{
rozofs_bins_hdr_p->s.projection_id = 0;
rozofs_bins_hdr_p->s.timestamp = 0;
rozofs_bins_hdr_p->s.effective_length = 0;
continue;
}
/*
** fill the header of the projection
*/
rozofs_bins_hdr_p->s.projection_id = projection_id;
rozofs_bins_hdr_p->s.timestamp = timestamp;
/*
** set the effective size of the block. It is always ROZOFS_BSIZE except for the last block
*/
if (i == (number_of_blocks-1))
{
rozofs_bins_hdr_p->s.effective_length = last_block_size;
}
else
{
rozofs_bins_hdr_p->s.effective_length = ROZOFS_BSIZE;
}
/*
** update the pointer to point out the first bins
*/
projections[projection_id].bins += sizeof(rozofs_stor_bins_hdr_t)/sizeof(bin_t);
}
/*
** do not apply transform for empty block
*/
if (empty_block == 0)
{
/*
** Apply the erasure code transform for the block i+first_block_idx
*/
transform_forward((pxl_t *) (data + (i * ROZOFS_BSIZE)),
rozofs_inverse,
ROZOFS_BSIZE / rozofs_inverse / sizeof (pxl_t),
rozofs_forward, projections);
}
}
return 0;
}