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Diffstat (limited to 'drivers/net/ethernet/sfc/ef10_sriov.c')
-rw-r--r--drivers/net/ethernet/sfc/ef10_sriov.c807
1 files changed, 807 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/ef10_sriov.c b/drivers/net/ethernet/sfc/ef10_sriov.c
new file mode 100644
index 000000000..9aae0d8b7
--- /dev/null
+++ b/drivers/net/ethernet/sfc/ef10_sriov.c
@@ -0,0 +1,807 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/****************************************************************************
+ * Driver for Solarflare network controllers and boards
+ * Copyright 2015 Solarflare Communications Inc.
+ */
+#include <linux/etherdevice.h>
+#include <linux/pci.h>
+#include <linux/module.h>
+#include "net_driver.h"
+#include "ef10_sriov.h"
+#include "efx.h"
+#include "nic.h"
+#include "mcdi_pcol.h"
+
+static int efx_ef10_evb_port_assign(struct efx_nic *efx, unsigned int port_id,
+ unsigned int vf_fn)
+{
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_EVB_PORT_ASSIGN_IN_LEN);
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+
+ MCDI_SET_DWORD(inbuf, EVB_PORT_ASSIGN_IN_PORT_ID, port_id);
+ MCDI_POPULATE_DWORD_2(inbuf, EVB_PORT_ASSIGN_IN_FUNCTION,
+ EVB_PORT_ASSIGN_IN_PF, nic_data->pf_index,
+ EVB_PORT_ASSIGN_IN_VF, vf_fn);
+
+ return efx_mcdi_rpc(efx, MC_CMD_EVB_PORT_ASSIGN, inbuf, sizeof(inbuf),
+ NULL, 0, NULL);
+}
+
+static int efx_ef10_vswitch_alloc(struct efx_nic *efx, unsigned int port_id,
+ unsigned int vswitch_type)
+{
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_ALLOC_IN_LEN);
+ int rc;
+
+ MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_UPSTREAM_PORT_ID, port_id);
+ MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_TYPE, vswitch_type);
+ MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 2);
+ MCDI_POPULATE_DWORD_1(inbuf, VSWITCH_ALLOC_IN_FLAGS,
+ VSWITCH_ALLOC_IN_FLAG_AUTO_PORT, 0);
+
+ /* Quietly try to allocate 2 VLAN tags */
+ rc = efx_mcdi_rpc_quiet(efx, MC_CMD_VSWITCH_ALLOC, inbuf, sizeof(inbuf),
+ NULL, 0, NULL);
+
+ /* If 2 VLAN tags is too many, revert to trying with 1 VLAN tags */
+ if (rc == -EPROTO) {
+ MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 1);
+ rc = efx_mcdi_rpc(efx, MC_CMD_VSWITCH_ALLOC, inbuf,
+ sizeof(inbuf), NULL, 0, NULL);
+ } else if (rc) {
+ efx_mcdi_display_error(efx, MC_CMD_VSWITCH_ALLOC,
+ MC_CMD_VSWITCH_ALLOC_IN_LEN,
+ NULL, 0, rc);
+ }
+ return rc;
+}
+
+static int efx_ef10_vswitch_free(struct efx_nic *efx, unsigned int port_id)
+{
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_FREE_IN_LEN);
+
+ MCDI_SET_DWORD(inbuf, VSWITCH_FREE_IN_UPSTREAM_PORT_ID, port_id);
+
+ return efx_mcdi_rpc(efx, MC_CMD_VSWITCH_FREE, inbuf, sizeof(inbuf),
+ NULL, 0, NULL);
+}
+
+static int efx_ef10_vport_alloc(struct efx_nic *efx,
+ unsigned int port_id_in,
+ unsigned int vport_type,
+ u16 vlan,
+ unsigned int *port_id_out)
+{
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_ALLOC_IN_LEN);
+ MCDI_DECLARE_BUF(outbuf, MC_CMD_VPORT_ALLOC_OUT_LEN);
+ size_t outlen;
+ int rc;
+
+ EFX_WARN_ON_PARANOID(!port_id_out);
+
+ MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_UPSTREAM_PORT_ID, port_id_in);
+ MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_TYPE, vport_type);
+ MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_NUM_VLAN_TAGS,
+ (vlan != EFX_EF10_NO_VLAN));
+ MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_FLAGS,
+ VPORT_ALLOC_IN_FLAG_AUTO_PORT, 0);
+ if (vlan != EFX_EF10_NO_VLAN)
+ MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_VLAN_TAGS,
+ VPORT_ALLOC_IN_VLAN_TAG_0, vlan);
+
+ rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_ALLOC, inbuf, sizeof(inbuf),
+ outbuf, sizeof(outbuf), &outlen);
+ if (rc)
+ return rc;
+ if (outlen < MC_CMD_VPORT_ALLOC_OUT_LEN)
+ return -EIO;
+
+ *port_id_out = MCDI_DWORD(outbuf, VPORT_ALLOC_OUT_VPORT_ID);
+ return 0;
+}
+
+static int efx_ef10_vport_free(struct efx_nic *efx, unsigned int port_id)
+{
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_FREE_IN_LEN);
+
+ MCDI_SET_DWORD(inbuf, VPORT_FREE_IN_VPORT_ID, port_id);
+
+ return efx_mcdi_rpc(efx, MC_CMD_VPORT_FREE, inbuf, sizeof(inbuf),
+ NULL, 0, NULL);
+}
+
+static void efx_ef10_sriov_free_vf_vports(struct efx_nic *efx)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ int i;
+
+ if (!nic_data->vf)
+ return;
+
+ for (i = 0; i < efx->vf_count; i++) {
+ struct ef10_vf *vf = nic_data->vf + i;
+
+ /* If VF is assigned, do not free the vport */
+ if (vf->pci_dev && pci_is_dev_assigned(vf->pci_dev))
+ continue;
+
+ if (vf->vport_assigned) {
+ efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, i);
+ vf->vport_assigned = 0;
+ }
+
+ if (!is_zero_ether_addr(vf->mac)) {
+ efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
+ eth_zero_addr(vf->mac);
+ }
+
+ if (vf->vport_id) {
+ efx_ef10_vport_free(efx, vf->vport_id);
+ vf->vport_id = 0;
+ }
+
+ vf->efx = NULL;
+ }
+}
+
+static void efx_ef10_sriov_free_vf_vswitching(struct efx_nic *efx)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+
+ efx_ef10_sriov_free_vf_vports(efx);
+ kfree(nic_data->vf);
+ nic_data->vf = NULL;
+}
+
+static int efx_ef10_sriov_assign_vf_vport(struct efx_nic *efx,
+ unsigned int vf_i)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ struct ef10_vf *vf = nic_data->vf + vf_i;
+ int rc;
+
+ if (WARN_ON_ONCE(!nic_data->vf))
+ return -EOPNOTSUPP;
+
+ rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
+ MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
+ vf->vlan, &vf->vport_id);
+ if (rc)
+ return rc;
+
+ rc = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
+ if (rc) {
+ eth_zero_addr(vf->mac);
+ return rc;
+ }
+
+ rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
+ if (rc)
+ return rc;
+
+ vf->vport_assigned = 1;
+ return 0;
+}
+
+static int efx_ef10_sriov_alloc_vf_vswitching(struct efx_nic *efx)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ unsigned int i;
+ int rc;
+
+ nic_data->vf = kcalloc(efx->vf_count, sizeof(struct ef10_vf),
+ GFP_KERNEL);
+ if (!nic_data->vf)
+ return -ENOMEM;
+
+ for (i = 0; i < efx->vf_count; i++) {
+ eth_random_addr(nic_data->vf[i].mac);
+ nic_data->vf[i].efx = NULL;
+ nic_data->vf[i].vlan = EFX_EF10_NO_VLAN;
+
+ rc = efx_ef10_sriov_assign_vf_vport(efx, i);
+ if (rc)
+ goto fail;
+ }
+
+ return 0;
+fail:
+ efx_ef10_sriov_free_vf_vswitching(efx);
+ return rc;
+}
+
+static int efx_ef10_sriov_restore_vf_vswitching(struct efx_nic *efx)
+{
+ unsigned int i;
+ int rc;
+
+ for (i = 0; i < efx->vf_count; i++) {
+ rc = efx_ef10_sriov_assign_vf_vport(efx, i);
+ if (rc)
+ goto fail;
+ }
+
+ return 0;
+fail:
+ efx_ef10_sriov_free_vf_vswitching(efx);
+ return rc;
+}
+
+static int efx_ef10_vadaptor_alloc_set_features(struct efx_nic *efx)
+{
+ u32 port_flags;
+ int rc;
+
+ rc = efx_ef10_vadaptor_alloc(efx, efx->vport_id);
+ if (rc)
+ goto fail_vadaptor_alloc;
+
+ rc = efx_ef10_vadaptor_query(efx, efx->vport_id,
+ &port_flags, NULL, NULL);
+ if (rc)
+ goto fail_vadaptor_query;
+
+ if (port_flags &
+ (1 << MC_CMD_VPORT_ALLOC_IN_FLAG_VLAN_RESTRICT_LBN))
+ efx->fixed_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+ else
+ efx->fixed_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
+
+ return 0;
+
+fail_vadaptor_query:
+ efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
+fail_vadaptor_alloc:
+ return rc;
+}
+
+/* On top of the default firmware vswitch setup, create a VEB vswitch and
+ * expansion vport for use by this function.
+ */
+int efx_ef10_vswitching_probe_pf(struct efx_nic *efx)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ struct net_device *net_dev = efx->net_dev;
+ int rc;
+
+ if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) {
+ /* vswitch not needed as we have no VFs */
+ efx_ef10_vadaptor_alloc_set_features(efx);
+ return 0;
+ }
+
+ rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED,
+ MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB);
+ if (rc)
+ goto fail1;
+
+ rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
+ MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
+ EFX_EF10_NO_VLAN, &efx->vport_id);
+ if (rc)
+ goto fail2;
+
+ rc = efx_ef10_vport_add_mac(efx, efx->vport_id, net_dev->dev_addr);
+ if (rc)
+ goto fail3;
+ ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr);
+
+ rc = efx_ef10_vadaptor_alloc_set_features(efx);
+ if (rc)
+ goto fail4;
+
+ return 0;
+fail4:
+ efx_ef10_vport_del_mac(efx, efx->vport_id, nic_data->vport_mac);
+ eth_zero_addr(nic_data->vport_mac);
+fail3:
+ efx_ef10_vport_free(efx, efx->vport_id);
+ efx->vport_id = EVB_PORT_ID_ASSIGNED;
+fail2:
+ efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED);
+fail1:
+ return rc;
+}
+
+int efx_ef10_vswitching_probe_vf(struct efx_nic *efx)
+{
+ return efx_ef10_vadaptor_alloc_set_features(efx);
+}
+
+int efx_ef10_vswitching_restore_pf(struct efx_nic *efx)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ int rc;
+
+ if (!nic_data->must_probe_vswitching)
+ return 0;
+
+ rc = efx_ef10_vswitching_probe_pf(efx);
+ if (rc)
+ goto fail;
+
+ rc = efx_ef10_sriov_restore_vf_vswitching(efx);
+ if (rc)
+ goto fail;
+
+ nic_data->must_probe_vswitching = false;
+fail:
+ return rc;
+}
+
+int efx_ef10_vswitching_restore_vf(struct efx_nic *efx)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ int rc;
+
+ if (!nic_data->must_probe_vswitching)
+ return 0;
+
+ rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
+ if (rc)
+ return rc;
+
+ nic_data->must_probe_vswitching = false;
+ return 0;
+}
+
+void efx_ef10_vswitching_remove_pf(struct efx_nic *efx)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+
+ efx_ef10_sriov_free_vf_vswitching(efx);
+
+ efx_ef10_vadaptor_free(efx, efx->vport_id);
+
+ if (efx->vport_id == EVB_PORT_ID_ASSIGNED)
+ return; /* No vswitch was ever created */
+
+ if (!is_zero_ether_addr(nic_data->vport_mac)) {
+ efx_ef10_vport_del_mac(efx, efx->vport_id,
+ efx->net_dev->dev_addr);
+ eth_zero_addr(nic_data->vport_mac);
+ }
+ efx_ef10_vport_free(efx, efx->vport_id);
+ efx->vport_id = EVB_PORT_ID_ASSIGNED;
+
+ /* Only free the vswitch if no VFs are assigned */
+ if (!pci_vfs_assigned(efx->pci_dev))
+ efx_ef10_vswitch_free(efx, efx->vport_id);
+}
+
+void efx_ef10_vswitching_remove_vf(struct efx_nic *efx)
+{
+ efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
+}
+
+static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs)
+{
+ int rc = 0;
+ struct pci_dev *dev = efx->pci_dev;
+
+ efx->vf_count = num_vfs;
+
+ rc = efx_ef10_sriov_alloc_vf_vswitching(efx);
+ if (rc)
+ goto fail1;
+
+ rc = pci_enable_sriov(dev, num_vfs);
+ if (rc)
+ goto fail2;
+
+ return 0;
+fail2:
+ efx_ef10_sriov_free_vf_vswitching(efx);
+fail1:
+ efx->vf_count = 0;
+ netif_err(efx, probe, efx->net_dev,
+ "Failed to enable SRIOV VFs\n");
+ return rc;
+}
+
+/* Disable SRIOV and remove VFs
+ * If some VFs are attached to a guest (using Xen, only) nothing is
+ * done if force=false, and vports are freed if force=true (for the non
+ * attachedc ones, only) but SRIOV is not disabled and VFs are not
+ * removed in either case.
+ */
+static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force)
+{
+ struct pci_dev *dev = efx->pci_dev;
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ unsigned int vfs_assigned = pci_vfs_assigned(dev);
+ int i, rc = 0;
+
+ if (vfs_assigned && !force) {
+ netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; "
+ "please detach them before disabling SR-IOV\n");
+ return -EBUSY;
+ }
+
+ if (!vfs_assigned) {
+ for (i = 0; i < efx->vf_count; i++)
+ nic_data->vf[i].pci_dev = NULL;
+ pci_disable_sriov(dev);
+ } else {
+ rc = -EBUSY;
+ }
+
+ efx_ef10_sriov_free_vf_vswitching(efx);
+ efx->vf_count = 0;
+ return rc;
+}
+
+int efx_ef10_sriov_configure(struct efx_nic *efx, int num_vfs)
+{
+ if (num_vfs == 0)
+ return efx_ef10_pci_sriov_disable(efx, false);
+ else
+ return efx_ef10_pci_sriov_enable(efx, num_vfs);
+}
+
+int efx_ef10_sriov_init(struct efx_nic *efx)
+{
+ return 0;
+}
+
+void efx_ef10_sriov_fini(struct efx_nic *efx)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ int rc;
+
+ if (!nic_data->vf) {
+ /* Remove any un-assigned orphaned VFs. This can happen if the PF driver
+ * was unloaded while any VF was assigned to a guest (using Xen, only).
+ */
+ if (pci_num_vf(efx->pci_dev) && !pci_vfs_assigned(efx->pci_dev))
+ pci_disable_sriov(efx->pci_dev);
+ return;
+ }
+
+ /* Disable SRIOV and remove any VFs in the host */
+ rc = efx_ef10_pci_sriov_disable(efx, true);
+ if (rc)
+ netif_dbg(efx, drv, efx->net_dev,
+ "Disabling SRIOV was not successful rc=%d\n", rc);
+ else
+ netif_dbg(efx, drv, efx->net_dev, "SRIOV disabled\n");
+}
+
+static int efx_ef10_vport_del_vf_mac(struct efx_nic *efx, unsigned int port_id,
+ u8 *mac)
+{
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_DEL_MAC_ADDRESS_IN_LEN);
+ MCDI_DECLARE_BUF_ERR(outbuf);
+ size_t outlen;
+ int rc;
+
+ MCDI_SET_DWORD(inbuf, VPORT_DEL_MAC_ADDRESS_IN_VPORT_ID, port_id);
+ ether_addr_copy(MCDI_PTR(inbuf, VPORT_DEL_MAC_ADDRESS_IN_MACADDR), mac);
+
+ rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_DEL_MAC_ADDRESS, inbuf,
+ sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
+
+ return rc;
+}
+
+int efx_ef10_sriov_set_vf_mac(struct efx_nic *efx, int vf_i, const u8 *mac)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ struct ef10_vf *vf;
+ int rc;
+
+ if (!nic_data->vf)
+ return -EOPNOTSUPP;
+
+ if (vf_i >= efx->vf_count)
+ return -EINVAL;
+ vf = nic_data->vf + vf_i;
+
+ if (vf->efx) {
+ efx_device_detach_sync(vf->efx);
+ efx_net_stop(vf->efx->net_dev);
+
+ vf->efx->type->filter_table_remove(vf->efx);
+
+ rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
+ if (rc)
+ return rc;
+ }
+
+ rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
+ if (rc)
+ return rc;
+
+ if (!is_zero_ether_addr(vf->mac)) {
+ rc = efx_ef10_vport_del_vf_mac(efx, vf->vport_id, vf->mac);
+ if (rc)
+ return rc;
+ }
+
+ if (!is_zero_ether_addr(mac)) {
+ rc = efx_ef10_vport_add_mac(efx, vf->vport_id, mac);
+ if (rc)
+ goto fail;
+
+ if (vf->efx)
+ eth_hw_addr_set(vf->efx->net_dev, mac);
+ }
+
+ ether_addr_copy(vf->mac, mac);
+
+ rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
+ if (rc)
+ goto fail;
+
+ if (vf->efx) {
+ /* VF cannot use the vport_id that the PF created */
+ rc = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
+ if (rc)
+ return rc;
+ vf->efx->type->filter_table_probe(vf->efx);
+ efx_net_open(vf->efx->net_dev);
+ efx_device_attach_if_not_resetting(vf->efx);
+ }
+
+ return 0;
+
+fail:
+ eth_zero_addr(vf->mac);
+ return rc;
+}
+
+int efx_ef10_sriov_set_vf_vlan(struct efx_nic *efx, int vf_i, u16 vlan,
+ u8 qos)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ struct ef10_vf *vf;
+ u16 new_vlan;
+ int rc = 0, rc2 = 0;
+
+ if (vf_i >= efx->vf_count)
+ return -EINVAL;
+ if (qos != 0)
+ return -EINVAL;
+
+ vf = nic_data->vf + vf_i;
+
+ new_vlan = (vlan == 0) ? EFX_EF10_NO_VLAN : vlan;
+ if (new_vlan == vf->vlan)
+ return 0;
+
+ if (vf->efx) {
+ efx_device_detach_sync(vf->efx);
+ efx_net_stop(vf->efx->net_dev);
+
+ mutex_lock(&vf->efx->mac_lock);
+ vf->efx->type->filter_table_remove(vf->efx);
+
+ rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
+ if (rc)
+ goto restore_filters;
+ }
+
+ if (vf->vport_assigned) {
+ rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
+ if (rc) {
+ netif_warn(efx, drv, efx->net_dev,
+ "Failed to change vlan on VF %d.\n", vf_i);
+ netif_warn(efx, drv, efx->net_dev,
+ "This is likely because the VF is bound to a driver in a VM.\n");
+ netif_warn(efx, drv, efx->net_dev,
+ "Please unload the driver in the VM.\n");
+ goto restore_vadaptor;
+ }
+ vf->vport_assigned = 0;
+ }
+
+ if (!is_zero_ether_addr(vf->mac)) {
+ rc = efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
+ if (rc)
+ goto restore_evb_port;
+ }
+
+ if (vf->vport_id) {
+ rc = efx_ef10_vport_free(efx, vf->vport_id);
+ if (rc)
+ goto restore_mac;
+ vf->vport_id = 0;
+ }
+
+ /* Do the actual vlan change */
+ vf->vlan = new_vlan;
+
+ /* Restore everything in reverse order */
+ rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
+ MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
+ vf->vlan, &vf->vport_id);
+ if (rc)
+ goto reset_nic_up_write;
+
+restore_mac:
+ if (!is_zero_ether_addr(vf->mac)) {
+ rc2 = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
+ if (rc2) {
+ eth_zero_addr(vf->mac);
+ goto reset_nic_up_write;
+ }
+ }
+
+restore_evb_port:
+ rc2 = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
+ if (rc2)
+ goto reset_nic_up_write;
+ else
+ vf->vport_assigned = 1;
+
+restore_vadaptor:
+ if (vf->efx) {
+ rc2 = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
+ if (rc2)
+ goto reset_nic_up_write;
+ }
+
+restore_filters:
+ if (vf->efx) {
+ rc2 = vf->efx->type->filter_table_probe(vf->efx);
+ if (rc2)
+ goto reset_nic_up_write;
+
+ mutex_unlock(&vf->efx->mac_lock);
+
+ rc2 = efx_net_open(vf->efx->net_dev);
+ if (rc2)
+ goto reset_nic;
+
+ efx_device_attach_if_not_resetting(vf->efx);
+ }
+ return rc;
+
+reset_nic_up_write:
+ if (vf->efx)
+ mutex_unlock(&vf->efx->mac_lock);
+reset_nic:
+ if (vf->efx) {
+ netif_err(efx, drv, efx->net_dev,
+ "Failed to restore VF - scheduling reset.\n");
+ efx_schedule_reset(vf->efx, RESET_TYPE_DATAPATH);
+ } else {
+ netif_err(efx, drv, efx->net_dev,
+ "Failed to restore the VF and cannot reset the VF "
+ "- VF is not functional.\n");
+ netif_err(efx, drv, efx->net_dev,
+ "Please reload the driver attached to the VF.\n");
+ }
+
+ return rc ? rc : rc2;
+}
+
+static int efx_ef10_sriov_set_privilege_mask(struct efx_nic *efx, int vf_i,
+ u32 mask, u32 value)
+{
+ MCDI_DECLARE_BUF(pm_outbuf, MC_CMD_PRIVILEGE_MASK_OUT_LEN);
+ MCDI_DECLARE_BUF(pm_inbuf, MC_CMD_PRIVILEGE_MASK_IN_LEN);
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ u32 old_mask, new_mask;
+ size_t outlen;
+ int rc;
+
+ EFX_WARN_ON_PARANOID((value & ~mask) != 0);
+
+ /* Get privilege mask */
+ MCDI_POPULATE_DWORD_2(pm_inbuf, PRIVILEGE_MASK_IN_FUNCTION,
+ PRIVILEGE_MASK_IN_FUNCTION_PF, nic_data->pf_index,
+ PRIVILEGE_MASK_IN_FUNCTION_VF, vf_i);
+
+ rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK,
+ pm_inbuf, sizeof(pm_inbuf),
+ pm_outbuf, sizeof(pm_outbuf), &outlen);
+
+ if (rc != 0)
+ return rc;
+ if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN)
+ return -EIO;
+
+ old_mask = MCDI_DWORD(pm_outbuf, PRIVILEGE_MASK_OUT_OLD_MASK);
+
+ new_mask = old_mask & ~mask;
+ new_mask |= value;
+
+ if (new_mask == old_mask)
+ return 0;
+
+ new_mask |= MC_CMD_PRIVILEGE_MASK_IN_DO_CHANGE;
+
+ /* Set privilege mask */
+ MCDI_SET_DWORD(pm_inbuf, PRIVILEGE_MASK_IN_NEW_MASK, new_mask);
+
+ rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK,
+ pm_inbuf, sizeof(pm_inbuf),
+ pm_outbuf, sizeof(pm_outbuf), &outlen);
+
+ if (rc != 0)
+ return rc;
+ if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN)
+ return -EIO;
+
+ return 0;
+}
+
+int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i, bool spoofchk)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+
+ /* Can't enable spoofchk if firmware doesn't support it. */
+ if (!(nic_data->datapath_caps &
+ BIT(MC_CMD_GET_CAPABILITIES_OUT_TX_MAC_SECURITY_FILTERING_LBN)) &&
+ spoofchk)
+ return -EOPNOTSUPP;
+
+ return efx_ef10_sriov_set_privilege_mask(efx, vf_i,
+ MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX,
+ spoofchk ? 0 : MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX);
+}
+
+int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i,
+ int link_state)
+{
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+
+ BUILD_BUG_ON(IFLA_VF_LINK_STATE_AUTO !=
+ MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_AUTO);
+ BUILD_BUG_ON(IFLA_VF_LINK_STATE_ENABLE !=
+ MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_UP);
+ BUILD_BUG_ON(IFLA_VF_LINK_STATE_DISABLE !=
+ MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_DOWN);
+ MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
+ LINK_STATE_MODE_IN_FUNCTION_PF,
+ nic_data->pf_index,
+ LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
+ MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, link_state);
+ return efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
+ NULL, 0, NULL); /* don't care what old mode was */
+}
+
+int efx_ef10_sriov_get_vf_config(struct efx_nic *efx, int vf_i,
+ struct ifla_vf_info *ivf)
+{
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
+ MCDI_DECLARE_BUF(outbuf, MC_CMD_LINK_STATE_MODE_OUT_LEN);
+
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+ struct ef10_vf *vf;
+ size_t outlen;
+ int rc;
+
+ if (vf_i >= efx->vf_count)
+ return -EINVAL;
+
+ if (!nic_data->vf)
+ return -EOPNOTSUPP;
+
+ vf = nic_data->vf + vf_i;
+
+ ivf->vf = vf_i;
+ ivf->min_tx_rate = 0;
+ ivf->max_tx_rate = 0;
+ ether_addr_copy(ivf->mac, vf->mac);
+ ivf->vlan = (vf->vlan == EFX_EF10_NO_VLAN) ? 0 : vf->vlan;
+ ivf->qos = 0;
+
+ MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
+ LINK_STATE_MODE_IN_FUNCTION_PF,
+ nic_data->pf_index,
+ LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
+ MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE,
+ MC_CMD_LINK_STATE_MODE_IN_DO_NOT_CHANGE);
+ rc = efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
+ outbuf, sizeof(outbuf), &outlen);
+ if (rc)
+ return rc;
+ if (outlen < MC_CMD_LINK_STATE_MODE_OUT_LEN)
+ return -EIO;
+ ivf->linkstate = MCDI_DWORD(outbuf, LINK_STATE_MODE_OUT_OLD_MODE);
+
+ return 0;
+}