1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2015 Mellanox Technologies, Ltd
12 * Not needed by this file; included to work around the lack of off_t
13 * definition for mlx5dv.h with unpatched rdma-core versions.
15 #include <sys/types.h>
17 #include <ethdev_driver.h>
18 #include <rte_common.h>
19 #include <rte_malloc.h>
20 #include <rte_hypervisor.h>
24 #include <mlx5_malloc.h>
27 * Release VLAN network device, created for VM workaround.
30 * Ethernet device object, Netlink context provider.
32 * Object representing the network device to release.
35 mlx5_vlan_vmwa_release(struct rte_eth_dev *dev,
36 struct mlx5_vf_vlan *vlan)
38 struct mlx5_priv *priv = dev->data->dev_private;
39 struct mlx5_nl_vlan_vmwa_context *vmwa = priv->vmwa_context;
40 struct mlx5_nl_vlan_dev *vlan_dev = &vmwa->vlan_dev[0];
42 MLX5_ASSERT(vlan->created);
43 MLX5_ASSERT(priv->vmwa_context);
44 if (!vlan->created || !vmwa)
47 rte_spinlock_lock(&vmwa->sl);
48 MLX5_ASSERT(vlan_dev[vlan->tag].refcnt);
49 if (--vlan_dev[vlan->tag].refcnt == 0 &&
50 vlan_dev[vlan->tag].ifindex) {
51 mlx5_nl_vlan_vmwa_delete(vmwa, vlan_dev[vlan->tag].ifindex);
52 vlan_dev[vlan->tag].ifindex = 0;
54 rte_spinlock_unlock(&vmwa->sl);
58 * Acquire VLAN interface with specified tag for VM workaround.
61 * Ethernet device object, Netlink context provider.
63 * Object representing the network device to acquire.
66 mlx5_vlan_vmwa_acquire(struct rte_eth_dev *dev,
67 struct mlx5_vf_vlan *vlan)
69 struct mlx5_priv *priv = dev->data->dev_private;
70 struct mlx5_nl_vlan_vmwa_context *vmwa = priv->vmwa_context;
71 struct mlx5_nl_vlan_dev *vlan_dev = &vmwa->vlan_dev[0];
73 MLX5_ASSERT(!vlan->created);
74 MLX5_ASSERT(priv->vmwa_context);
75 if (vlan->created || !vmwa)
77 rte_spinlock_lock(&vmwa->sl);
78 if (vlan_dev[vlan->tag].refcnt == 0) {
79 MLX5_ASSERT(!vlan_dev[vlan->tag].ifindex);
80 vlan_dev[vlan->tag].ifindex =
81 mlx5_nl_vlan_vmwa_create(vmwa, vmwa->vf_ifindex,
84 if (vlan_dev[vlan->tag].ifindex) {
85 vlan_dev[vlan->tag].refcnt++;
88 rte_spinlock_unlock(&vmwa->sl);
92 * Create per ethernet device VLAN VM workaround context
95 * Pointer to Ethernet device structure.
100 * Pointer to mlx5_nl_vlan_vmwa_context
103 mlx5_vlan_vmwa_init(struct rte_eth_dev *dev, uint32_t ifindex)
105 struct mlx5_priv *priv = dev->data->dev_private;
106 struct mlx5_nl_vlan_vmwa_context *vmwa;
107 enum rte_hypervisor hv_type;
109 /* Do not engage workaround over PF. */
110 if (!priv->sh->dev_cap.vf)
112 /* Check whether there is desired virtual environment */
113 hv_type = rte_hypervisor_get();
115 case RTE_HYPERVISOR_UNKNOWN:
116 case RTE_HYPERVISOR_VMWARE:
118 * The "white list" of configurations
119 * to engage the workaround.
124 * The configuration is not found in the "white list".
125 * We should not engage the VLAN workaround.
129 vmwa = mlx5_malloc(MLX5_MEM_ZERO, sizeof(*vmwa), sizeof(uint32_t),
133 "Can not allocate memory"
134 " for VLAN workaround context");
137 rte_spinlock_init(&vmwa->sl);
138 vmwa->nl_socket = mlx5_nl_init(NETLINK_ROUTE, 0);
139 if (vmwa->nl_socket < 0) {
141 "Can not create Netlink socket"
142 " for VLAN workaround context");
146 vmwa->vf_ifindex = ifindex;
147 /* Cleanup for existing VLAN devices. */
152 * Destroy per ethernet device VLAN VM workaround context
155 * Pointer to VM context
158 mlx5_vlan_vmwa_exit(void *vmctx)
162 struct mlx5_nl_vlan_vmwa_context *vmwa = vmctx;
163 /* Delete all remaining VLAN devices. */
164 for (i = 0; i < RTE_DIM(vmwa->vlan_dev); i++) {
165 if (vmwa->vlan_dev[i].ifindex)
166 mlx5_nl_vlan_vmwa_delete(vmwa,
167 vmwa->vlan_dev[i].ifindex);
169 if (vmwa->nl_socket >= 0)
170 close(vmwa->nl_socket);