[dpdk-dev] [PATCH v3 6/9] net/mlx5: save bonding member ports information

[Xueming Li <xuemingl@nvidia.com>]

Since kernel bonding netdev doesn't provide statistics counter that
reflects all member ports, PMD has to manually summarize counters from
each member ports.

As a preparation, this patch collects bonding member port information
and saves to shared context data.

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
 drivers/net/mlx5/linux/mlx5_ethdev_os.c |  4 +-
 drivers/net/mlx5/linux/mlx5_os.c        | 91 ++++++++++++++++---------
 drivers/net/mlx5/mlx5.c                 |  2 +
 drivers/net/mlx5/mlx5.h                 | 19 +++++-
 drivers/net/mlx5/mlx5_ethdev.c          |  5 +-
 5 files changed, 84 insertions(+), 37 deletions(-)

diff --git a/drivers/net/mlx5/linux/mlx5_ethdev_os.c b/drivers/net/mlx5/linux/mlx5_ethdev_os.c
index ac311de46d..84610a7bc0 100644
--- a/drivers/net/mlx5/linux/mlx5_ethdev_os.c
+++ b/drivers/net/mlx5/linux/mlx5_ethdev_os.c
@@ -150,8 +150,8 @@ mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[MLX5_NAMESIZE])
 
 	MLX5_ASSERT(priv);
 	MLX5_ASSERT(priv->sh);
-	if (priv->bond_ifindex > 0) {
-		memcpy(ifname, priv->bond_name, MLX5_NAMESIZE);
+	if (priv->master && priv->sh->bond.ifindex > 0) {
+		memcpy(ifname, priv->sh->bond.ifname, MLX5_NAMESIZE);
 		return 0;
 	}
 	ifindex = mlx5_ifindex(dev);
diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index 521a0a5789..47a7c3dff0 100644
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c
@@ -1417,19 +1417,6 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 	 */
 	MLX5_ASSERT(spawn->ifindex);
 	priv->if_index = spawn->ifindex;
-	if (priv->pf_bond >= 0 && priv->master) {
-		/* Get bond interface info */
-		err = mlx5_sysfs_bond_info(priv->if_index,
-				     &priv->bond_ifindex,
-				     priv->bond_name);
-		if (err)
-			DRV_LOG(ERR, "unable to get bond info: %s",
-				strerror(rte_errno));
-		else
-			DRV_LOG(INFO, "PF device %u, bond device %u(%s)",
-				priv->if_index, priv->bond_ifindex,
-				priv->bond_name);
-	}
 	eth_dev->data->dev_private = priv;
 	priv->dev_data = eth_dev->data;
 	eth_dev->data->mac_addrs = priv->mac;
@@ -1697,6 +1684,8 @@ mlx5_dev_spawn_data_cmp(const void *a, const void *b)
  *   Netlink RDMA group socket handle.
  * @param[in] owner
  *   Rerepsentor owner PF index.
+ * @param[out] bond_info
+ *   Pointer to bonding information.
  *
  * @return
  *   negative value if no bonding device found, otherwise
@@ -1705,19 +1694,22 @@ mlx5_dev_spawn_data_cmp(const void *a, const void *b)
 static int
 mlx5_device_bond_pci_match(const struct ibv_device *ibv_dev,
 			   const struct rte_pci_addr *pci_dev,
-			   int nl_rdma, uint16_t owner)
+			   int nl_rdma, uint16_t owner,
+			   struct mlx5_bond_info *bond_info)
 {
 	char ifname[IF_NAMESIZE + 1];
 	unsigned int ifindex;
 	unsigned int np, i;
-	FILE *file = NULL;
+	FILE *bond_file = NULL, *file;
 	int pf = -1;
+	int ret;
 
 	/*
 	 * Try to get master device name. If something goes
 	 * wrong suppose the lack of kernel support and no
 	 * bonding devices.
 	 */
+	memset(bond_info, 0, sizeof(*bond_info));
 	if (nl_rdma < 0)
 		return -1;
 	if (!strstr(ibv_dev->name, "bond"))
@@ -1741,15 +1733,15 @@ mlx5_device_bond_pci_match(const struct ibv_device *ibv_dev,
 		/* Try to read bonding slave names from sysfs. */
 		MKSTR(slaves,
 		      "/sys/class/net/%s/master/bonding/slaves", ifname);
-		file = fopen(slaves, "r");
-		if (file)
+		bond_file = fopen(slaves, "r");
+		if (bond_file)
 			break;
 	}
-	if (!file)
+	if (!bond_file)
 		return -1;
 	/* Use safe format to check maximal buffer length. */
 	MLX5_ASSERT(atol(RTE_STR(IF_NAMESIZE)) == IF_NAMESIZE);
-	while (fscanf(file, "%" RTE_STR(IF_NAMESIZE) "s", ifname) == 1) {
+	while (fscanf(bond_file, "%" RTE_STR(IF_NAMESIZE) "s", ifname) == 1) {
 		char tmp_str[IF_NAMESIZE + 32];
 		struct rte_pci_addr pci_addr;
 		struct mlx5_switch_info	info;
@@ -1762,13 +1754,7 @@ mlx5_device_bond_pci_match(const struct ibv_device *ibv_dev,
 					 " for netdev \"%s\"", ifname);
 			continue;
 		}
-		if (pci_dev->domain != pci_addr.domain ||
-		    pci_dev->bus != pci_addr.bus ||
-		    pci_dev->devid != pci_addr.devid ||
-		    pci_dev->function + owner != pci_addr.function)
-			continue;
 		/* Slave interface PCI address match found. */
-		fclose(file);
 		snprintf(tmp_str, sizeof(tmp_str),
 			 "/sys/class/net/%s/phys_port_name", ifname);
 		file = fopen(tmp_str, "rb");
@@ -1777,13 +1763,52 @@ mlx5_device_bond_pci_match(const struct ibv_device *ibv_dev,
 		info.name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET;
 		if (fscanf(file, "%32s", tmp_str) == 1)
 			mlx5_translate_port_name(tmp_str, &info);
-		if (info.name_type == MLX5_PHYS_PORT_NAME_TYPE_LEGACY ||
-		    info.name_type == MLX5_PHYS_PORT_NAME_TYPE_UPLINK)
+		fclose(file);
+		/* Only process PF ports. */
+		if (info.name_type != MLX5_PHYS_PORT_NAME_TYPE_LEGACY &&
+		    info.name_type != MLX5_PHYS_PORT_NAME_TYPE_UPLINK)
+			continue;
+		/* Check max bonding member. */
+		if (info.port_name >= MLX5_BOND_MAX_PORTS) {
+			DRV_LOG(WARNING, "bonding index out of range, "
+				"please increase MLX5_BOND_MAX_PORTS: %s",
+				tmp_str);
+			break;
+		}
+		/* Match PCI address. */
+		if (pci_dev->domain == pci_addr.domain &&
+		    pci_dev->bus == pci_addr.bus &&
+		    pci_dev->devid == pci_addr.devid &&
+		    pci_dev->function + owner == pci_addr.function)
 			pf = info.port_name;
-		break;
-	}
-	if (file)
+		/* Get ifindex. */
+		snprintf(tmp_str, sizeof(tmp_str),
+			 "/sys/class/net/%s/ifindex", ifname);
+		file = fopen(tmp_str, "rb");
+		if (!file)
+			break;
+		ret = fscanf(file, "%u", &ifindex);
 		fclose(file);
+		if (ret != 1)
+			break;
+		/* Save bonding info. */
+		strncpy(bond_info->ports[info.port_name].ifname, ifname,
+			sizeof(bond_info->ports[0].ifname));
+		bond_info->ports[info.port_name].pci_addr = pci_addr;
+		bond_info->ports[info.port_name].ifindex = ifindex;
+		bond_info->n_port++;
+	}
+	if (pf >= 0) {
+		/* Get bond interface info */
+		ret = mlx5_sysfs_bond_info(ifindex, &bond_info->ifindex,
+					   bond_info->ifname);
+		if (ret)
+			DRV_LOG(ERR, "unable to get bond info: %s",
+				strerror(rte_errno));
+		else
+			DRV_LOG(INFO, "PF device %u, bond device %u(%s)",
+				ifindex, bond_info->ifindex, bond_info->ifname);
+	}
 	return pf;
 }
 
@@ -1838,6 +1863,7 @@ mlx5_os_pci_probe_pf(struct rte_pci_device *pci_dev,
 	unsigned int dev_config_vf;
 	struct rte_eth_devargs eth_da = *req_eth_da;
 	struct rte_pci_addr owner_pci = pci_dev->addr; /* Owner PF. */
+	struct mlx5_bond_info bond_info;
 	int ret = -1;
 
 	if (rte_eal_process_type() == RTE_PROC_PRIMARY)
@@ -1869,7 +1895,8 @@ mlx5_os_pci_probe_pf(struct rte_pci_device *pci_dev,
 
 		DRV_LOG(DEBUG, "checking device \"%s\"", ibv_list[ret]->name);
 		bd = mlx5_device_bond_pci_match
-				(ibv_list[ret], &owner_pci, nl_rdma, owner_id);
+				(ibv_list[ret], &owner_pci, nl_rdma, owner_id,
+				 &bond_info);
 		if (bd >= 0) {
 			/*
 			 * Bonding device detected. Only one match is allowed,
@@ -1978,6 +2005,7 @@ mlx5_os_pci_probe_pf(struct rte_pci_device *pci_dev,
 		MLX5_ASSERT(nd == 1);
 		MLX5_ASSERT(np);
 		for (i = 1; i <= np; ++i) {
+			list[ns].bond_info = &bond_info;
 			list[ns].max_port = np;
 			list[ns].phys_port = i;
 			list[ns].phys_dev = ibv_match[0];
@@ -2068,6 +2096,7 @@ mlx5_os_pci_probe_pf(struct rte_pci_device *pci_dev,
 		 */
 		for (i = 0; i != nd; ++i) {
 			memset(&list[ns].info, 0, sizeof(list[ns].info));
+			list[ns].bond_info = NULL;
 			list[ns].max_port = 1;
 			list[ns].phys_port = 1;
 			list[ns].phys_dev = ibv_match[i];
diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index d613ffd655..e170db948d 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -927,6 +927,8 @@ mlx5_alloc_shared_dev_ctx(const struct mlx5_dev_spawn_data *spawn,
 		rte_errno  = ENOMEM;
 		goto exit;
 	}
+	if (spawn->bond_info)
+		sh->bond = *spawn->bond_info;
 	err = mlx5_os_open_device(spawn, config, sh);
 	if (!sh->ctx)
 		goto error;
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index e7afa438ce..508f98f8cd 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -115,6 +115,7 @@ struct mlx5_dev_spawn_data {
 	void *phys_dev; /**< Associated physical device. */
 	struct rte_eth_dev *eth_dev; /**< Associated Ethernet device. */
 	struct rte_pci_device *pci_dev; /**< Backend PCI device. */
+	struct mlx5_bond_info *bond_info;
 };
 
 /** Key string for IPC. */
@@ -661,6 +662,19 @@ struct mlx5_flex_parser_profiles {
 	void *obj;		/* Flex parser node object. */
 };
 
+/* Bonding device information. */
+struct mlx5_bond_info {
+	int n_port; /* Number of bond member ports. */
+	uint32_t ifindex;
+	char ifname[MLX5_NAMESIZE + 1];
+#define MLX5_BOND_MAX_PORTS 2
+	struct {
+		char ifname[MLX5_NAMESIZE + 1];
+		uint32_t ifindex;
+		struct rte_pci_addr pci_addr;
+	} ports[MLX5_BOND_MAX_PORTS];
+};
+
 /*
  * Shared Infiniband device context for Master/Representors
  * which belong to same IB device with multiple IB ports.
@@ -671,6 +685,7 @@ struct mlx5_dev_ctx_shared {
 	uint32_t devx:1; /* Opened with DV. */
 	uint32_t flow_hit_aso_en:1; /* Flow Hit ASO is supported. */
 	uint32_t max_port; /* Maximal IB device port index. */
+	struct mlx5_bond_info bond; /* Bonding information. */
 	void *ctx; /* Verbs/DV/DevX context. */
 	void *pd; /* Protection Domain. */
 	uint32_t pdn; /* Protection Domain number. */
@@ -916,10 +931,8 @@ struct mlx5_priv {
 	uint32_t vport_meta_tag; /* Used for vport index match ove VF LAG. */
 	uint32_t vport_meta_mask; /* Used for vport index field match mask. */
 	int32_t representor_id; /* RTE_ETH_REPR(), -1 if not a representor. */
-	int32_t pf_bond; /* >=0 means PF index in bonding configuration. */
+	int32_t pf_bond; /* >=0, representor owner PF index in bonding. */
 	unsigned int if_index; /* Associated kernel network device index. */
-	uint32_t bond_ifindex; /**< Bond interface index. */
-	char bond_name[MLX5_NAMESIZE]; /**< Bond interface name. */
 	/* RX/TX queues. */
 	unsigned int rxqs_n; /* RX queues array size. */
 	unsigned int txqs_n; /* TX queues array size. */
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 5341eb16c9..29389fc98f 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -42,7 +42,10 @@ mlx5_ifindex(const struct rte_eth_dev *dev)
 
 	MLX5_ASSERT(priv);
 	MLX5_ASSERT(priv->if_index);
-	ifindex = priv->bond_ifindex > 0 ? priv->bond_ifindex : priv->if_index;
+	if (priv->master && priv->sh->bond.ifindex > 0)
+		ifindex = priv->sh->bond.ifindex;
+	else
+		ifindex = priv->if_index;
 	if (!ifindex)
 		rte_errno = ENXIO;
 	return ifindex;
-- 
2.25.1