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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/drivers/net/ethernet/sfc/ef10_sriov.c
..
..
@@ -1,10 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /****************************************************************************
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  * Driver for Solarflare network controllers and boards
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  * Copyright 2015 Solarflare Communications Inc.
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License version 2 as published
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- * by the Free Software Foundation, incorporated herein by reference.
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  */
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 #include <linux/etherdevice.h>
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 #include <linux/pci.h>
..
..
@@ -235,15 +232,14 @@
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232
 
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 static int efx_ef10_vadaptor_alloc_set_features(struct efx_nic *efx)
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 {
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-	struct efx_ef10_nic_data *nic_data = efx->nic_data;
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 	u32 port_flags;
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 	int rc;
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-	rc = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
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+	rc = efx_ef10_vadaptor_alloc(efx, efx->vport_id);
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 	if (rc)
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 		goto fail_vadaptor_alloc;
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241
 
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-	rc = efx_ef10_vadaptor_query(efx, nic_data->vport_id,
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+	rc = efx_ef10_vadaptor_query(efx, efx->vport_id,
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 				     &port_flags, NULL, NULL);
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 	if (rc)
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 		goto fail_vadaptor_query;
..
..
@@ -284,11 +280,11 @@
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280
 
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 	rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
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 				  MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
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-				  EFX_EF10_NO_VLAN, &nic_data->vport_id);
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+				  EFX_EF10_NO_VLAN, &efx->vport_id);
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 	if (rc)
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 		goto fail2;
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286
 
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-	rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id, net_dev->dev_addr);
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+	rc = efx_ef10_vport_add_mac(efx, efx->vport_id, net_dev->dev_addr);
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 	if (rc)
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 		goto fail3;
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 	ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr);
..
..
@@ -299,11 +295,11 @@
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295
 
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 	return 0;
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297
 fail4:
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-	efx_ef10_vport_del_mac(efx, nic_data->vport_id, nic_data->vport_mac);
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+	efx_ef10_vport_del_mac(efx, efx->vport_id, nic_data->vport_mac);
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 	eth_zero_addr(nic_data->vport_mac);
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 fail3:
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-	efx_ef10_vport_free(efx, nic_data->vport_id);
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-	nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
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+	efx_ef10_vport_free(efx, efx->vport_id);
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+	efx->vport_id = EVB_PORT_ID_ASSIGNED;
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303
 fail2:
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 	efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED);
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305
 fail1:
..
..
@@ -358,22 +354,22 @@
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354
 
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 	efx_ef10_sriov_free_vf_vswitching(efx);
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356
 
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-	efx_ef10_vadaptor_free(efx, nic_data->vport_id);
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+	efx_ef10_vadaptor_free(efx, efx->vport_id);
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358
 
363
-	if (nic_data->vport_id == EVB_PORT_ID_ASSIGNED)
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+	if (efx->vport_id == EVB_PORT_ID_ASSIGNED)
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 		return; /* No vswitch was ever created */
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361
 
366
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 	if (!is_zero_ether_addr(nic_data->vport_mac)) {
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-		efx_ef10_vport_del_mac(efx, nic_data->vport_id,
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+		efx_ef10_vport_del_mac(efx, efx->vport_id,
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 				       efx->net_dev->dev_addr);
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 		eth_zero_addr(nic_data->vport_mac);
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 	}
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-	efx_ef10_vport_free(efx, nic_data->vport_id);
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-	nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
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+	efx_ef10_vport_free(efx, efx->vport_id);
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+	efx->vport_id = EVB_PORT_ID_ASSIGNED;
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369
 
374
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 	/* Only free the vswitch if no VFs are assigned */
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 	if (!pci_vfs_assigned(efx->pci_dev))
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-		efx_ef10_vswitch_free(efx, nic_data->vport_id);
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+		efx_ef10_vswitch_free(efx, efx->vport_id);
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 }
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374
 
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 void efx_ef10_vswitching_remove_vf(struct efx_nic *efx)
..
..
@@ -415,8 +411,9 @@
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 static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force)
416
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 {
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 	struct pci_dev *dev = efx->pci_dev;
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+	struct efx_ef10_nic_data *nic_data = efx->nic_data;
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 	unsigned int vfs_assigned = pci_vfs_assigned(dev);
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-	int rc = 0;
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+	int i, rc = 0;
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417
 
421
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 	if (vfs_assigned && !force) {
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 		netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; "
..
..
@@ -424,10 +421,13 @@
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 		return -EBUSY;
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422
 	}
426
423
 
427
-	if (!vfs_assigned)
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+	if (!vfs_assigned) {
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+		for (i = 0; i < efx->vf_count; i++)
426
+			nic_data->vf[i].pci_dev = NULL;
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 		pci_disable_sriov(dev);
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-	else
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+	} else {
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 		rc = -EBUSY;
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+	}
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431
 
432
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 	efx_ef10_sriov_free_vf_vswitching(efx);
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 	efx->vf_count = 0;
..
..
@@ -524,10 +524,9 @@
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524
 
525
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 	if (!is_zero_ether_addr(mac)) {
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 		rc = efx_ef10_vport_add_mac(efx, vf->vport_id, mac);
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-		if (rc) {
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-			eth_zero_addr(vf->mac);
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+		if (rc)
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 			goto fail;
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-		}
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+
531
530
 		if (vf->efx)
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531
 			ether_addr_copy(vf->efx->net_dev->dev_addr, mac);
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532
 	}
..
..
@@ -688,10 +687,70 @@
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 	return rc ? rc : rc2;
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688
 }
690
689
 
691
-int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i,
692
-				   bool spoofchk)
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+static int efx_ef10_sriov_set_privilege_mask(struct efx_nic *efx, int vf_i,
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+					     u32 mask, u32 value)
693
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 {
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-	return spoofchk ? -EOPNOTSUPP : 0;
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+	MCDI_DECLARE_BUF(pm_outbuf, MC_CMD_PRIVILEGE_MASK_OUT_LEN);
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+	MCDI_DECLARE_BUF(pm_inbuf, MC_CMD_PRIVILEGE_MASK_IN_LEN);
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+	struct efx_ef10_nic_data *nic_data = efx->nic_data;
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+	u32 old_mask, new_mask;
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+	size_t outlen;
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+	int rc;
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+
700
+	EFX_WARN_ON_PARANOID((value & ~mask) != 0);
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+
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+	/* Get privilege mask */
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+	MCDI_POPULATE_DWORD_2(pm_inbuf, PRIVILEGE_MASK_IN_FUNCTION,
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+			      PRIVILEGE_MASK_IN_FUNCTION_PF, nic_data->pf_index,
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+			      PRIVILEGE_MASK_IN_FUNCTION_VF, vf_i);
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+
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+	rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK,
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+			  pm_inbuf, sizeof(pm_inbuf),
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+			  pm_outbuf, sizeof(pm_outbuf), &outlen);
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+
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+	if (rc != 0)
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+		return rc;
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+	if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN)
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+		return -EIO;
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+
716
+	old_mask = MCDI_DWORD(pm_outbuf, PRIVILEGE_MASK_OUT_OLD_MASK);
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+
718
+	new_mask = old_mask & ~mask;
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+	new_mask |= value;
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+
721
+	if (new_mask == old_mask)
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+		return 0;
723
+
724
+	new_mask |= MC_CMD_PRIVILEGE_MASK_IN_DO_CHANGE;
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+
726
+	/* Set privilege mask */
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+	MCDI_SET_DWORD(pm_inbuf, PRIVILEGE_MASK_IN_NEW_MASK, new_mask);
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+
729
+	rc = efx_mcdi_rpc(efx, MC_CMD_PRIVILEGE_MASK,
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+			  pm_inbuf, sizeof(pm_inbuf),
731
+			  pm_outbuf, sizeof(pm_outbuf), &outlen);
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+
733
+	if (rc != 0)
734
+		return rc;
735
+	if (outlen != MC_CMD_PRIVILEGE_MASK_OUT_LEN)
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+		return -EIO;
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+
738
+	return 0;
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+}
740
+
741
+int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i, bool spoofchk)
742
+{
743
+	struct efx_ef10_nic_data *nic_data = efx->nic_data;
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+
745
+	/* Can't enable spoofchk if firmware doesn't support it. */
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+	if (!(nic_data->datapath_caps &
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+	      BIT(MC_CMD_GET_CAPABILITIES_OUT_TX_MAC_SECURITY_FILTERING_LBN)) &&
748
+	    spoofchk)
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+		return -EOPNOTSUPP;
750
+
751
+	return efx_ef10_sriov_set_privilege_mask(efx, vf_i,
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+		MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX,
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+		spoofchk ? 0 : MC_CMD_PRIVILEGE_MASK_IN_GRP_MAC_SPOOFING_TX);
695
754
 }
696
755
 
697
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 int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i,