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net/softnic: parse raw flow item

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Added support for parsing raw flow item.
flow_item_raw_preprocess() is added for the same.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
This commit is contained in:
Reshma Pattan 2018-09-11 15:20:45 +01:00 committed by Cristian Dumitrescu
parent a373200590
commit 193de77b60
1 changed files with 108 additions and 0 deletions
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108
drivers/net/softnic/rte_eth_softnic_flow.c
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@ -297,6 +297,106 @@ flow_item_is_proto(enum rte_flow_item_type type,
}
}
static int
flow_item_raw_preprocess(const struct rte_flow_item *item,
union flow_item *item_spec,
union flow_item *item_mask,
size_t *item_size,
int *item_disabled,
struct rte_flow_error *error)
{
const struct rte_flow_item_raw *item_raw_spec = item->spec;
const struct rte_flow_item_raw *item_raw_mask = item->mask;
const uint8_t *pattern;
const uint8_t *pattern_mask;
uint8_t *spec = (uint8_t *)item_spec;
uint8_t *mask = (uint8_t *)item_mask;
size_t pattern_length, pattern_offset, i;
int disabled;
if (!item->spec)
return rte_flow_error_set(error,
ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"RAW: Null specification");
if (item->last)
return rte_flow_error_set(error,
ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"RAW: Range not allowed (last must be NULL)");
if (item_raw_spec->relative == 0)
return rte_flow_error_set(error,
ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"RAW: Absolute offset not supported");
if (item_raw_spec->search)
return rte_flow_error_set(error,
ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"RAW: Search not supported");
if (item_raw_spec->offset < 0)
return rte_flow_error_set(error,
ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
item,
"RAW: Negative offset not supported");
if (item_raw_spec->length == 0)
return rte_flow_error_set(error,
ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"RAW: Zero pattern length");
if (item_raw_spec->offset + item_raw_spec->length >
TABLE_RULE_MATCH_SIZE_MAX)
return rte_flow_error_set(error,
ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"RAW: Item too big");
if (!item_raw_spec->pattern && item_raw_mask && item_raw_mask->pattern)
return rte_flow_error_set(error,
ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
item,
"RAW: Non-NULL pattern mask not allowed with NULL pattern");
pattern = item_raw_spec->pattern;
pattern_mask = (item_raw_mask) ? item_raw_mask->pattern : NULL;
pattern_length = (size_t)item_raw_spec->length;
pattern_offset = (size_t)item_raw_spec->offset;
disabled = 0;
if (pattern_mask == NULL)
disabled = 1;
else
for (i = 0; i < pattern_length; i++)
if ((pattern)[i])
disabled = 1;
memset(spec, 0, TABLE_RULE_MATCH_SIZE_MAX);
if (pattern)
memcpy(&spec[pattern_offset], pattern, pattern_length);
memset(mask, 0, TABLE_RULE_MATCH_SIZE_MAX);
if (pattern_mask)
memcpy(&mask[pattern_offset], pattern_mask, pattern_length);
*item_size = pattern_offset + pattern_length;
*item_disabled = disabled;
return 0;
}
static int
flow_item_proto_preprocess(const struct rte_flow_item *item,
union flow_item *item_spec,
@ -317,6 +417,14 @@ flow_item_proto_preprocess(const struct rte_flow_item *item,
item,
"Item type not supported");
if (item->type == RTE_FLOW_ITEM_TYPE_RAW)
return flow_item_raw_preprocess(item,
item_spec,
item_mask,
item_size,
item_disabled,
error);
/* spec */
if (!item->spec) {
/* If spec is NULL, then last and mask also have to be NULL. */