[dpdk-dev] [PATCH v2 01/12] ethdev: add API to query packet type filling info
Jianfeng Tan
jianfeng.tan at intel.com
Fri Jan 15 06:45:48 CET 2016
Add a new API rte_eth_dev_get_ptype_info to query wether/what packet type will
be filled by given pmd rx burst function.
Signed-off-by: Jianfeng Tan <jianfeng.tan at intel.com>
---
lib/librte_ether/rte_ethdev.c | 20 ++++++++++++++++++++
lib/librte_ether/rte_ethdev.h | 27 +++++++++++++++++++++++++++
lib/librte_mbuf/rte_mbuf.h | 6 ++++++
3 files changed, 53 insertions(+)
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index ed971b4..cd34f46 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -1614,6 +1614,26 @@ rte_eth_dev_info_get(uint8_t port_id, struct rte_eth_dev_info *dev_info)
dev_info->driver_name = dev->data->drv_name;
}
+int
+rte_eth_dev_get_ptype_info(uint8_t port_id, uint32_t ptype_mask,
+ uint32_t ptypes[], int num)
+{
+ int ret, i, j;
+ struct rte_eth_dev *dev;
+ uint32_t all_ptypes[RTE_PTYPE_MAX_NUM];
+
+ 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_ptype_info_get, -ENOTSUP);
+ ret = (*dev->dev_ops->dev_ptype_info_get)(dev, all_ptypes);
+
+ for (i = 0, j = 0; i < ret && j < num; ++i)
+ if (all_ptypes[i] & ptype_mask)
+ ptypes[j++] = all_ptypes[i];
+
+ return ret;
+}
+
void
rte_eth_macaddr_get(uint8_t port_id, struct ether_addr *mac_addr)
{
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index bada8ad..42f8188 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -1021,6 +1021,10 @@ typedef void (*eth_dev_infos_get_t)(struct rte_eth_dev *dev,
struct rte_eth_dev_info *dev_info);
/**< @internal Get specific informations of an Ethernet device. */
+typedef int (*eth_dev_ptype_info_get_t)(struct rte_eth_dev *dev,
+ uint32_t ptypes[]);
+/**< @internal Get ptype info of eth_rx_burst_t. */
+
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. */
@@ -1347,6 +1351,7 @@ struct eth_dev_ops {
eth_queue_stats_mapping_set_t queue_stats_mapping_set;
/**< Configure per queue stat counter mapping. */
eth_dev_infos_get_t dev_infos_get; /**< Get device info. */
+ eth_dev_ptype_info_get_t dev_ptype_info_get; /** Get ptype info */
mtu_set_t mtu_set; /**< Set MTU. */
vlan_filter_set_t vlan_filter_set; /**< Filter VLAN Setup. */
vlan_tpid_set_t vlan_tpid_set; /**< Outer VLAN TPID Setup. */
@@ -2273,6 +2278,28 @@ extern void rte_eth_dev_info_get(uint8_t port_id,
struct rte_eth_dev_info *dev_info);
/**
+ * Retrieve the contextual information of an Ethernet device.
+ *
+ * @param port_id
+ * The port identifier of the Ethernet device.
+ * @param ptype_mask
+ * A hint of what kind of packet type which the caller is interested in.
+ * @param ptypes
+ * An array of packet types to be filled with.
+ * @param num
+ * The size of ptypes array.
+ * @return
+ * - (>0) Number of ptypes supported. May be greater than param num and
+ * caller needs to check that.
+ * - (0 or -ENOTSUP) if PMD does not fill the specified ptype.
+ * - (-ENODEV) if *port_id* invalid.
+ */
+extern int rte_eth_dev_get_ptype_info(uint8_t port_id,
+ uint32_t ptype_mask,
+ uint32_t ptypes[],
+ int num);
+
+/**
* Retrieve the MTU of an Ethernet device.
*
* @param port_id
diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index f234ac9..d116711 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -667,6 +667,12 @@ extern "C" {
#define RTE_PTYPE_INNER_L4_MASK 0x0f000000
/**
+ * Total number of all kinds of RTE_PTYPE_*, except from *_MASK, is 37 for now
+ * and reserve some space for new ptypes
+ */
+#define RTE_PTYPE_MAX_NUM 64
+
+/**
* Check if the (outer) L3 header is IPv4. To avoid comparing IPv4 types one by
* one, bit 4 is selected to be used for IPv4 only. Then checking bit 4 can
* determine if it is an IPV4 packet.
--
2.1.4
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