The patch should add item in release notes (as well as all other
subsequent patches which add more features).
On 8/16/19 8:55 AM, pbhagavat...@marvell.com wrote:
From: Pavan Nikhilesh <pbhagavat...@marvell.com>
Add `rte_eth_dev_set_supported_ptypes` function that will allow the
application to inform the PMD the packet types it is interested in.
Based on the ptypes set PMDs can optimize their Rx path.
-If application doesn’t want any ptype information it can call
`rte_eth_dev_set_supported_ptypes(ethdev_id, RTE_PTYPE_UNKNOWN)` and PMD
will set rte_mbuf::packet_type to 0.
As I understand PMD may provide more reach classification
than set. So, it is not obliged to set packet type to 0.
-If application doesn’t call `rte_eth_dev_set_supported_ptypes` PMD can
return `rte_mbuf::packet_type` with `rte_eth_dev_get_supported_ptypes`.
-If application is interested only in L2/L3 layer, it can inform the PMD
to update `rte_mbuf::packet_type` with L2/L3 ptype by calling
`rte_eth_dev_set_supported_ptypes(ethdev_id,
RTE_PTYPE_L2_MASK | RTE_PTYPE_L3_MASK)`.
Suggested-by: Konstantin Ananyev <konstantin.anan...@intel.com>
Signed-off-by: Pavan Nikhilesh <pbhagavat...@marvell.com>
---
doc/guides/nics/features.rst | 12 ++++++++----
lib/librte_ethdev/rte_ethdev.c | 28 ++++++++++++++++++++++++++++
lib/librte_ethdev/rte_ethdev.h | 17 +++++++++++++++++
lib/librte_ethdev/rte_ethdev_core.h | 6 ++++++
4 files changed, 59 insertions(+), 4 deletions(-)
diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
index c4e128d2f..d4d55f721 100644
--- a/doc/guides/nics/features.rst
+++ b/doc/guides/nics/features.rst
@@ -582,10 +582,14 @@ Supports inner packet L4 checksum.
Packet type parsing
-------------------
-Supports packet type parsing and returns a list of supported types.
-
-* **[implements] eth_dev_ops**: ``dev_supported_ptypes_get``.
-* **[related] API**: ``rte_eth_dev_get_supported_ptypes()``.
+Supports packet type parsing and returns a list of supported types. Allows
+application to set ptypes it is interested in.
+
+* **[implements] eth_dev_ops**: ``dev_supported_ptypes_get``,
+ ``dev_supported_ptypes_set``.
+* **[related] API**: ``rte_eth_dev_get_supported_ptypes()``,
+ ``rte_eth_dev_set_supported_ptypes()``.
+* **[provides] mbuf**: ``mbuf.packet_type``.
.. _nic_features_timesync:
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 17d183e1f..72fe660c3 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -2602,6 +2602,34 @@ rte_eth_dev_get_supported_ptypes(uint16_t port_id,
uint32_t ptype_mask,
return j;
}
+int
+rte_eth_dev_set_supported_ptypes(uint16_t port_id, uint32_t ptype_mask)
+{
+ int i;
+ struct rte_eth_dev *dev;
+ const uint32_t *all_ptypes;
+ uint32_t all_ptype_mask = 0;
+
+ RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+ dev = &rte_eth_devices[port_id];
+ RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_supported_ptypes_set,
+ -ENOTSUP);
+ RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_supported_ptypes_get,
+ -ENOTSUP);
+ all_ptypes = (*dev->dev_ops->dev_supported_ptypes_get)(dev);
+
+ if (!all_ptypes)
If I remember correctly DPDK style prefers to compare vs 0.
+ return -ENOTSUP;
+
+ for (i = 0; all_ptypes[i] != RTE_PTYPE_UNKNOWN; ++i)
+ all_ptype_mask |= all_ptypes[i];
+
+ if ((all_ptype_mask & ptype_mask) != ptype_mask)
+ return -ENOTSUP;
Do we really want so strict check here? May be just check
that intersection is not empty if ptype_mask is not empty?
I think that setting ptype_mask to 0 could be pretty often and
may be it makes sense to avoid get in the case. Also consider
to return OK even if there is no get/set callbacks at all.
+
+ return (*dev->dev_ops->dev_supported_ptypes_set)(dev, ptype_mask);
+}
+
void
rte_eth_macaddr_get(uint16_t port_id, struct rte_ether_addr *mac_addr)
{
diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index dc6596bc9..f97f0a6e5 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -2431,6 +2431,23 @@ int rte_eth_dev_fw_version_get(uint16_t port_id,
*/
int rte_eth_dev_get_supported_ptypes(uint16_t port_id, uint32_t ptype_mask,
uint32_t *ptypes, int num);
+/**
+ * Request Ethernet device to set only specific packet types in the packet.
+ *
+ * Application can use this function to set only specific ptypes that it's
+ * interested. This information can be used by the PMD to optimize Rx path.
+ *
+ * @param port_id
+ * The port identifier of the Ethernet device.
+ * @param ptype_mask
+ * The ptype family that application is interested in.
+ * @return
+ * - (0) Successfully set supported ptypes.
+ * - (-ENODEV) if *port_id* is invalid.
+ * - (-ENOTSUP) Packet type mask supplied is not supported by the Ethernet
+ * device.
+ */
+int rte_eth_dev_set_supported_ptypes(uint16_t port_id, uint32_t ptype_mask);
Should it be experimental?
Please, add it to .map file.
/**
* Retrieve the MTU of an Ethernet device.
diff --git a/lib/librte_ethdev/rte_ethdev_core.h
b/lib/librte_ethdev/rte_ethdev_core.h
index 2922d5b7c..02ee7c12c 100644
--- a/lib/librte_ethdev/rte_ethdev_core.h
+++ b/lib/librte_ethdev/rte_ethdev_core.h
@@ -110,6 +110,10 @@ typedef void (*eth_dev_infos_get_t)(struct rte_eth_dev
*dev,
typedef const uint32_t *(*eth_dev_supported_ptypes_get_t)(struct rte_eth_dev
*dev);
/**< @internal Get supported ptypes of an Ethernet device. */
+typedef int (*eth_dev_supported_ptypes_set_t)(struct rte_eth_dev *dev,
+ uint32_t ptype_mask);
+/**< @internal Set required ptypes of an Ethernet device. */
+
typedef int (*eth_queue_start_t)(struct rte_eth_dev *dev,
uint16_t queue_id);
/**< @internal Start rx and tx of a queue of an Ethernet device. */
@@ -421,6 +425,8 @@ struct eth_dev_ops {
eth_fw_version_get_t fw_version_get; /**< Get firmware version. */
eth_dev_supported_ptypes_get_t dev_supported_ptypes_get;
/**< Get packet types supported and identified by device. */
+ eth_dev_supported_ptypes_set_t dev_supported_ptypes_set;
+ /**< Inform device about the interested ptypes. */
vlan_filter_set_t vlan_filter_set; /**< Filter VLAN Setup. */
vlan_tpid_set_t vlan_tpid_set; /**< Outer/Inner VLAN TPID
Setup. */
--
2.22.0
