From dd41cc3bb90efd455df514899a5d3cf245182eb1 Mon Sep 17 00:00:00 2001 From: Matan Barak Date: Wed, 19 Mar 2014 18:11:53 +0200 Subject: [PATCH] net/mlx4: Adapt num_vfs/probed_vf params for single port VF A new syntax is added for the module parameters num_vfs and probe_vf. num_vfs=p1,p2,p1+p2 probe_bf=p1,p2,p1+p2 Where p1(2) is the number of VFs on / probed VFs for physical port1(2) and p1+p2 is the number of dual port VFs. Single port VFs are currently supported only when the link type for both ports of the device is Ethernet. Signed-off-by: Matan Barak Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/main.c | 47 ++++++++++++++++------- 1 file changed, 34 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index 472925428de7..61d7bcff4533 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -77,13 +77,17 @@ MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero"); #endif /* CONFIG_PCI_MSI */ -static int num_vfs; -module_param(num_vfs, int, 0444); -MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0"); - -static int probe_vf; -module_param(probe_vf, int, 0644); -MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)"); +static uint8_t num_vfs[3] = {0, 0, 0}; +static int num_vfs_argc = 3; +module_param_array(num_vfs, byte , &num_vfs_argc, 0444); +MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0\n" + "num_vfs=port1,port2,port1+2"); + +static uint8_t probe_vf[3] = {0, 0, 0}; +static int probe_vfs_argc = 3; +module_param_array(probe_vf, byte, &probe_vfs_argc, 0444); +MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)\n" + "probe_vf=port1,port2,port1+2"); int mlx4_log_num_mgm_entry_size = MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE; module_param_named(log_num_mgm_entry_size, @@ -2193,7 +2197,10 @@ static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data) struct mlx4_dev *dev; int err; int port; - int nvfs[MLX4_MAX_PORTS + 1], prb_vf[MLX4_MAX_PORTS + 1]; + int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0}; + int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0}; + const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = { + {2, 0, 0}, {0, 1, 2}, {0, 1, 2} }; unsigned total_vfs = 0; int sriov_initialized = 0; unsigned int i; @@ -2211,16 +2218,17 @@ static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data) * per port, we must limit the number of VFs to 63 (since their are * 128 MACs) */ - for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]); - total_vfs += nvfs[i], i++) { - nvfs[i] = i == MLX4_MAX_PORTS ? num_vfs : 0; + for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) && i < num_vfs_argc; + total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) { + nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i]; if (nvfs[i] < 0) { dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n"); return -EINVAL; } } - for (i = 0; i < sizeof(prb_vf)/sizeof(prb_vf[0]); i++) { - prb_vf[i] = i == MLX4_MAX_PORTS ? probe_vf : 0; + for (i = 0; i < sizeof(prb_vf)/sizeof(prb_vf[0]) && i < probe_vfs_argc; + i++) { + prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i]; if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) { dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n"); return -EINVAL; @@ -2450,6 +2458,19 @@ slave_start: goto err_close; } if (sriov_initialized) { + int ib_ports = 0; + mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) + ib_ports++; + + if (ib_ports && + (num_vfs_argc > 1 || probe_vfs_argc > 1)) { + mlx4_err(dev, + "Invalid syntax of num_vfs/probe_vfs " + "with IB port. Single port VFs syntax" + " is only supported when all ports " + "are configured as ethernet\n"); + goto err_close; + } for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]); i++) { unsigned j; for (j = 0; j < nvfs[i]; ++sum, ++j) { -- 2.20.1