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net/bnxt: support identifier search and ref count

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Add support to search for identifiers and increase the reference
count for identifiers that are already allocated.

Signed-off-by: Kishore Padmanabha <kishore.padmanabha@broadcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Mike Baucom <michael.baucom@broadcom.com>
This commit is contained in:
Kishore Padmanabha 2020-07-15 19:20:35 +05:30 committed by Ferruh Yigit
parent d301396577
commit 5638818222
1 changed files with 111 additions and 3 deletions
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114
drivers/net/bnxt/tf_ulp/ulp_mapper.c
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@ -16,6 +16,7 @@
#include "ulp_mark_mgr.h"
#include "ulp_flow_db.h"
#include "ulp_mapper.h"
#include "tf_util.h"
static struct bnxt_ulp_glb_resource_info *
ulp_mapper_glb_resource_info_list_get(uint32_t *num_entries)
@ -677,6 +678,98 @@ ulp_mapper_ident_process(struct bnxt_ulp_mapper_parms *parms,
return rc;
}
/*
* Process the identifier instruction and extract it from result blob.
* Increment the identifier reference count and store it in the flow database.
*/
static int32_t
ulp_mapper_ident_extract(struct bnxt_ulp_mapper_parms *parms,
struct bnxt_ulp_mapper_tbl_info *tbl,
struct bnxt_ulp_mapper_ident_info *ident,
struct ulp_blob *res_blob)
{
struct ulp_flow_db_res_params fid_parms;
uint64_t id = 0;
uint32_t idx;
struct tf_search_identifier_parms sparms = { 0 };
struct tf_free_identifier_parms free_parms = { 0 };
struct tf *tfp;
int rc;
/* Get the tfp from ulp context */
tfp = bnxt_ulp_cntxt_tfp_get(parms->ulp_ctx);
if (!tfp) {
BNXT_TF_DBG(ERR, "Failed to get tf pointer\n");
return -EINVAL;
}
/* Extract the index from the result blob */
rc = ulp_blob_pull(res_blob, (uint8_t *)&idx, sizeof(idx),
ident->ident_bit_pos, ident->ident_bit_size);
if (rc) {
BNXT_TF_DBG(ERR, "Failed to extract identifier from blob\n");
return -EIO;
}
/* populate the search params and search identifier shadow table */
sparms.ident_type = ident->ident_type;
sparms.dir = tbl->direction;
/* convert the idx into cpu format */
sparms.search_id = tfp_be_to_cpu_32(idx);
/* Search identifier also increase the reference count */
rc = tf_search_identifier(tfp, &sparms);
if (rc) {
BNXT_TF_DBG(ERR, "Search ident %s:%x failed.\n",
tf_dir_2_str(sparms.dir),
sparms.search_id);
return rc;
}
BNXT_TF_DBG(INFO, "Search ident %s:%x.success.\n",
tf_dir_2_str(sparms.dir),
sparms.search_id);
/* Write it to the regfile */
id = (uint64_t)tfp_cpu_to_be_64(sparms.search_id);
if (!ulp_regfile_write(parms->regfile, ident->regfile_idx, id)) {
BNXT_TF_DBG(ERR, "Regfile[%d] write failed.\n", idx);
rc = -EINVAL;
/* Need to free the identifier, so goto error */
goto error;
}
/* Link the resource to the flow in the flow db */
memset(&fid_parms, 0, sizeof(fid_parms));
fid_parms.direction = tbl->direction;
fid_parms.resource_func = ident->resource_func;
fid_parms.resource_type = ident->ident_type;
fid_parms.resource_hndl = sparms.search_id;
fid_parms.critical_resource = BNXT_ULP_CRITICAL_RESOURCE_NO;
rc = ulp_flow_db_resource_add(parms->ulp_ctx,
parms->tbl_idx,
parms->fid,
&fid_parms);
if (rc) {
BNXT_TF_DBG(ERR, "Failed to link res to flow rc = %d\n",
rc);
/* Need to free the identifier, so goto error */
goto error;
}
return 0;
error:
/* Need to free the identifier */
free_parms.dir = tbl->direction;
free_parms.ident_type = ident->ident_type;
free_parms.id = sparms.search_id;
(void)tf_free_identifier(tfp, &free_parms);
BNXT_TF_DBG(ERR, "Ident extract failed for %s:%s:%x\n",
ident->description,
tf_dir_2_str(tbl->direction), sparms.search_id);
return rc;
}
static int32_t
ulp_mapper_result_field_process(struct bnxt_ulp_mapper_parms *parms,
enum tf_dir dir,
@ -1204,6 +1297,7 @@ ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms,
struct tf_free_tcam_entry_parms free_parms = { 0 };
uint32_t hit = 0;
uint16_t tmplen = 0;
struct ulp_blob res_blob;
/* Skip this if was handled by the cache. */
if (parms->tcam_tbl_opc == BNXT_ULP_MAPPER_TCAM_TBL_OPC_CACHE_SKIP) {
@ -1379,9 +1473,23 @@ ulp_mapper_tcam_tbl_process(struct bnxt_ulp_mapper_parms *parms,
goto error;
} else {
BNXT_TF_DBG(ERR, "Not supporting search before alloc now\n");
rc = -EINVAL;
goto error;
struct bnxt_ulp_mapper_ident_info *idents;
uint32_t num_idents;
/*
* Extract the listed identifiers from the result field,
* no need to allocate them.
*/
idents = ulp_mapper_ident_fields_get(tbl, &num_idents);
for (i = 0; i < num_idents; i++) {
rc = ulp_mapper_ident_extract(parms, tbl,
&idents[i], &res_blob);
if (rc) {
BNXT_TF_DBG(ERR,
"Error in ident extraction\n");
goto error;
}
}
}
/*