[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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