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From: Pablo de Lara <pablo.de.lara.guarch@intel.com>
To: dev@dpdk.org
Cc: fiona.trahe@intel.com, shally.verma@cavium.com, ahmed.mansour@nxp.com,
Ashish.Gupta@cavium.com, Pablo de Lara <pablo.de.lara.guarch@intel.com>,
Shally Verma <shally.verma@caviumnetworks.com>,
Ashish Gupta <ashish.gupta@caviumnetworks.com>
Date: Fri, 13 Apr 2018 19:18:31 +0100
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<20180413181832.11335-1-pablo.de.lara.guarch@intel.com>
Subject: [dpdk-dev] [PATCH v5 12/13] compressdev: add device capabilities
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From: Fiona Trahe <fiona.trahe@intel.com>
Added structure which each PMD will fill out,
providing the capabilities of each driver
(containing mainly which compression services
it supports).
Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Signed-off-by: Shally Verma <shally.verma@caviumnetworks.com>
Signed-off-by: Ashish Gupta <ashish.gupta@caviumnetworks.com>
---
lib/librte_compressdev/rte_compressdev.c | 23 ++++++++++++++
lib/librte_compressdev/rte_compressdev.h | 35 ++++++++++++++++++++++
lib/librte_compressdev/rte_compressdev_version.map | 1 +
3 files changed, 59 insertions(+)
diff --git a/lib/librte_compressdev/rte_compressdev.c b/lib/librte_compressdev/rte_compressdev.c
index 8d141b798..a5a1deaff 100644
--- a/lib/librte_compressdev/rte_compressdev.c
+++ b/lib/librte_compressdev/rte_compressdev.c
@@ -31,6 +31,29 @@ static struct rte_compressdev_global compressdev_globals = {
struct rte_compressdev_global *rte_compressdev_globals = &compressdev_globals;
+const struct rte_compressdev_capabilities * __rte_experimental
+rte_compressdev_capability_get(uint8_t dev_id,
+ enum rte_comp_algorithm algo)
+{
+ const struct rte_compressdev_capabilities *capability;
+ struct rte_compressdev_info dev_info;
+ int i = 0;
+
+ if (dev_id >= compressdev_globals.nb_devs) {
+ COMPRESSDEV_LOG(ERR, "Invalid dev_id=%d", dev_id);
+ return NULL;
+ }
+ rte_compressdev_info_get(dev_id, &dev_info);
+
+ while ((capability = &dev_info.capabilities[i++])->algo !=
+ RTE_COMP_ALGO_UNSPECIFIED){
+ if (capability->algo == algo)
+ return capability;
+ }
+
+ return NULL;
+}
+
const char * __rte_experimental
rte_compressdev_get_feature_name(uint64_t flag)
{
diff --git a/lib/librte_compressdev/rte_compressdev.h b/lib/librte_compressdev/rte_compressdev.h
index 91c1792d7..9e2fe95ca 100644
--- a/lib/librte_compressdev/rte_compressdev.h
+++ b/lib/librte_compressdev/rte_compressdev.h
@@ -21,6 +21,39 @@ extern "C" {
#include "rte_comp.h"
+/**
+ * Parameter log base 2 range description.
+ * Final value will be 2^value.
+ */
+struct rte_param_log2_range {
+ uint8_t min; /**< Minimum log2 value */
+ uint8_t max; /**< Maximum log2 value */
+ uint8_t increment;
+ /**< If a range of sizes are supported,
+ * this parameter is used to indicate
+ * increments in base 2 log byte value
+ * that are supported between the minimum and maximum
+ */
+};
+
+/** Structure used to capture a capability of a comp device */
+struct rte_compressdev_capabilities {
+ enum rte_comp_algorithm algo;
+ /* Compression algorithm */
+ uint64_t comp_feature_flags;
+ /**< Bitmask of flags for compression service features */
+ struct rte_param_log2_range window_size;
+ /**< Window size range in base two log byte values */
+};
+
+/** Macro used at end of comp PMD list */
+#define RTE_COMP_END_OF_CAPABILITIES_LIST() \
+ { RTE_COMP_ALGO_UNSPECIFIED }
+
+const struct rte_compressdev_capabilities * __rte_experimental
+rte_compressdev_capability_get(uint8_t dev_id,
+ enum rte_comp_algorithm algo);
+
/**
* compression device supported feature flags
*
@@ -57,6 +90,8 @@ rte_compressdev_get_feature_name(uint64_t flag);
struct rte_compressdev_info {
const char *driver_name; /**< Driver name. */
uint64_t feature_flags; /**< Feature flags */
+ const struct rte_compressdev_capabilities *capabilities;
+ /**< Array of devices supported capabilities */
uint16_t max_nb_queue_pairs;
/**< Maximum number of queues pairs supported by device.
* (If 0, there is no limit in maximum number of queue pairs)
diff --git a/lib/librte_compressdev/rte_compressdev_version.map b/lib/librte_compressdev/rte_compressdev_version.map
index 8e4004631..6c553341a 100644
--- a/lib/librte_compressdev/rte_compressdev_version.map
+++ b/lib/librte_compressdev/rte_compressdev_version.map
@@ -3,6 +3,7 @@ EXPERIMENTAL {
rte_compressdev_callback_register;
rte_compressdev_callback_unregister;
+ rte_compressdev_capability_get;
rte_compressdev_close;
rte_compressdev_configure;
rte_compressdev_count;
--
2.14.3