[dpdk-dev] [PATCH v7 1/9] ethdev: introduce representor type

[Xueming Li]

To support more representor type, this patch introduces representor type
enum. The enum is subject to be extended to support new representor in
patches upcoming.

For each devarg structure, only one type supported.

Signed-off-by: Xueming Li <xuemingl at nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
Acked-by: Thomas Monjalon <thomas at monjalon.net>
Acked-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>
Acked-by: Hyong Youb Kim <hyonkim at cisco.com>
---
 drivers/net/bnxt/bnxt_ethdev.c     |  7 +++++++
 drivers/net/enic/enic_ethdev.c     |  6 ++++++
 drivers/net/i40e/i40e_ethdev.c     |  7 +++++++
 drivers/net/ixgbe/ixgbe_ethdev.c   |  7 +++++++
 drivers/net/mlx5/linux/mlx5_os.c   | 11 +++++++++++
 lib/librte_ethdev/ethdev_driver.h  |  7 ++++++-
 lib/librte_ethdev/ethdev_private.c |  5 +++++
 lib/librte_ethdev/rte_ethdev.h     |  8 ++++++++
 8 files changed, 57 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 22c880c5c3..1a276c9b9e 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -5618,6 +5618,13 @@ static int bnxt_rep_port_probe(struct rte_pci_device *pci_dev,
 	int i, ret = 0;
 	struct rte_kvargs *kvlist = NULL;
 
+	if (eth_da->type == RTE_ETH_REPRESENTOR_NONE)
+		return 0;
+	if (eth_da->type != RTE_ETH_REPRESENTOR_VF) {
+		PMD_DRV_LOG(ERR, "unsupported representor type %d\n",
+			    eth_da->type);
+		return -ENOTSUP;
+	}
 	num_rep = eth_da->nb_representor_ports;
 	if (num_rep > BNXT_MAX_VF_REPS) {
 		PMD_DRV_LOG(ERR, "nb_representor_ports = %d > %d MAX VF REPS\n",
diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c
index b3f441c8f7..def669f411 100644
--- a/drivers/net/enic/enic_ethdev.c
+++ b/drivers/net/enic/enic_ethdev.c
@@ -1312,6 +1312,12 @@ static int eth_enic_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 		if (retval)
 			return retval;
 	}
+	if (eth_da.nb_representor_ports > 0 &&
+	    eth_da.type != RTE_ETH_REPRESENTOR_VF) {
+		ENICPMD_LOG(ERR, "unsupported representor type: %s\n",
+			    pci_dev->device.devargs->args);
+		return -ENOTSUP;
+	}
 	retval = rte_eth_dev_create(&pci_dev->device, pci_dev->device.name,
 		sizeof(struct enic),
 		eth_dev_pci_specific_init, pci_dev,
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index d7cd049891..9b86bcdc69 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -639,6 +639,13 @@ eth_i40e_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 			return retval;
 	}
 
+	if (eth_da.nb_representor_ports > 0 &&
+	    eth_da.type != RTE_ETH_REPRESENTOR_VF) {
+		PMD_DRV_LOG(ERR, "unsupported representor type: %s\n",
+			    pci_dev->device.devargs->args);
+		return -ENOTSUP;
+	}
+
 	retval = rte_eth_dev_create(&pci_dev->device, pci_dev->device.name,
 		sizeof(struct i40e_adapter),
 		eth_dev_pci_specific_init, pci_dev,
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 761a0f26bb..8a9a21e7c2 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -1718,6 +1718,13 @@ eth_ixgbe_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 	} else
 		memset(&eth_da, 0, sizeof(eth_da));
 
+	if (eth_da.nb_representor_ports > 0 &&
+	    eth_da.type != RTE_ETH_REPRESENTOR_VF) {
+		PMD_DRV_LOG(ERR, "unsupported representor type: %s\n",
+			    pci_dev->device.devargs->args);
+		return -ENOTSUP;
+	}
+
 	retval = rte_eth_dev_create(&pci_dev->device, pci_dev->device.name,
 		sizeof(struct ixgbe_adapter),
 		eth_dev_pci_specific_init, pci_dev,
diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index 2dc079779d..b041e1752d 100644
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c
@@ -704,6 +704,17 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 				strerror(rte_errno));
 			return NULL;
 		}
+		if (eth_da.type == RTE_ETH_REPRESENTOR_NONE) {
+			/* Representor not specified. */
+			rte_errno = EBUSY;
+			return NULL;
+		}
+		if (eth_da.type != RTE_ETH_REPRESENTOR_VF) {
+			rte_errno = ENOTSUP;
+			DRV_LOG(ERR, "unsupported representor type: %s",
+				dpdk_dev->devargs->args);
+			return NULL;
+		}
 		for (i = 0; i < eth_da.nb_representor_ports; ++i)
 			if (eth_da.representor_ports[i] ==
 			    (uint16_t)switch_info->port_name)
diff --git a/lib/librte_ethdev/ethdev_driver.h b/lib/librte_ethdev/ethdev_driver.h
index 57fdedaa1a..d68b8401e7 100644
--- a/lib/librte_ethdev/ethdev_driver.h
+++ b/lib/librte_ethdev/ethdev_driver.h
@@ -1216,7 +1216,11 @@ __rte_internal
 int
 rte_eth_switch_domain_free(uint16_t domain_id);
 
-/** Generic Ethernet device arguments  */
+/**
+ * Generic Ethernet device arguments
+ *
+ * One type of representor each structure.
+ */
 struct rte_eth_devargs {
 	uint16_t ports[RTE_MAX_ETHPORTS];
 	/** port/s number to enable on a multi-port single function */
@@ -1226,6 +1230,7 @@ struct rte_eth_devargs {
 	/** representor port/s identifier to enable on device */
 	uint16_t nb_representor_ports;
 	/** number of ports in representor port field */
+	enum rte_eth_representor_type type; /* type of representor */
 };
 
 /**
diff --git a/lib/librte_ethdev/ethdev_private.c b/lib/librte_ethdev/ethdev_private.c
index 5960c75cc5..2d51e3857a 100644
--- a/lib/librte_ethdev/ethdev_private.c
+++ b/lib/librte_ethdev/ethdev_private.c
@@ -111,11 +111,16 @@ rte_eth_devargs_process_range(char *str, uint16_t *list, uint16_t *len_list,
 	return 0;
 }
 
+/*
+ * representor format:
+ *   #: range or single number of VF representor
+ */
 int
 rte_eth_devargs_parse_representor_ports(char *str, void *data)
 {
 	struct rte_eth_devargs *eth_da = data;
 
+	eth_da->type = RTE_ETH_REPRESENTOR_VF;
 	return rte_eth_devargs_process_range(str, eth_da->representor_ports,
 		&eth_da->nb_representor_ports, RTE_MAX_ETHPORTS);
 }
diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index 059a061072..1f378958ca 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -1506,6 +1506,14 @@ struct rte_eth_rxseg_capa {
  * Ethernet device information
  */
 
+/**
+ * Ethernet device representor port type.
+ */
+enum rte_eth_representor_type {
+	RTE_ETH_REPRESENTOR_NONE, /**< not a representor. */
+	RTE_ETH_REPRESENTOR_VF,   /**< representor of Virtual Function. */
+};
+
 /**
  * A structure used to retrieve the contextual information of
  * an Ethernet device, such as the controlling driver of the
-- 
2.25.1