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2024-05-11 297b60346df8beafee954a0fd7c2d64f33f3b9bc 
 kernel/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
....@@ -1,46 +1,16 @@
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-/*
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- * Copyright (C) 2017 Netronome Systems, Inc.
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- *
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- * This software is dual licensed under the GNU General License Version 2,
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- * June 1991 as shown in the file COPYING in the top-level directory of this
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- * source tree or the BSD 2-Clause License provided below.  You have the
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- * option to license this software under the complete terms of either license.
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- *
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- * The BSD 2-Clause License:
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- *
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- *     Redistribution and use in source and binary forms, with or
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- *     without modification, are permitted provided that the following
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- *     conditions are met:
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- *
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- *      1. Redistributions of source code must retain the above
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- *         copyright notice, this list of conditions and the following
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- *         disclaimer.
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- *
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- *      2. Redistributions in binary form must reproduce the above
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- *         copyright notice, this list of conditions and the following
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- *         disclaimer in the documentation and/or other materials
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- *         provided with the distribution.
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- *
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- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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- * SOFTWARE.
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- */
1
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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+/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
333 
344 #include <linux/etherdevice.h>
355 #include <linux/io-64-nonatomic-hi-lo.h>
366 #include <linux/lockdep.h>
377 #include <net/dst_metadata.h>
38
-#include <net/switchdev.h>
398 
409 #include "nfpcore/nfp_cpp.h"
4110 #include "nfpcore/nfp_nsp.h"
4211 #include "nfp_app.h"
4312 #include "nfp_main.h"
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+#include "nfp_net.h"
4414 #include "nfp_net_ctrl.h"
4515 #include "nfp_net_repr.h"
4616 #include "nfp_net_sriov.h"
....@@ -261,6 +231,27 @@
261231 	return err;
262232 }
263233 
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+static netdev_features_t
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+nfp_repr_fix_features(struct net_device *netdev, netdev_features_t features)
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+{
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+	struct nfp_repr *repr = netdev_priv(netdev);
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+	netdev_features_t old_features = features;
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+	netdev_features_t lower_features;
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+	struct net_device *lower_dev;
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+
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+	lower_dev = repr->dst->u.port_info.lower_dev;
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+
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+	lower_features = lower_dev->features;
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+	if (lower_features & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM))
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+		lower_features |= NETIF_F_HW_CSUM;
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+
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+	features = netdev_intersect_features(features, lower_features);
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+	features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_HW_TC);
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+	features |= NETIF_F_LLTX;
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+
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+	return features;
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+}
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+
264255 const struct net_device_ops nfp_repr_netdev_ops = {
265256 	.ndo_init		= nfp_app_ndo_init,
266257 	.ndo_uninit		= nfp_app_ndo_uninit,
....@@ -276,11 +267,29 @@
276267 	.ndo_set_vf_mac		= nfp_app_set_vf_mac,
277268 	.ndo_set_vf_vlan	= nfp_app_set_vf_vlan,
278269 	.ndo_set_vf_spoofchk	= nfp_app_set_vf_spoofchk,
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+	.ndo_set_vf_trust	= nfp_app_set_vf_trust,
279271 	.ndo_get_vf_config	= nfp_app_get_vf_config,
280272 	.ndo_set_vf_link_state	= nfp_app_set_vf_link_state,
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+	.ndo_fix_features	= nfp_repr_fix_features,
281274 	.ndo_set_features	= nfp_port_set_features,
282275 	.ndo_set_mac_address    = eth_mac_addr,
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+	.ndo_get_port_parent_id	= nfp_port_get_port_parent_id,
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+	.ndo_get_devlink_port	= nfp_devlink_get_devlink_port,
283278 };
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+
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+void
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+nfp_repr_transfer_features(struct net_device *netdev, struct net_device *lower)
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+{
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+	struct nfp_repr *repr = netdev_priv(netdev);
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+
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+	if (repr->dst->u.port_info.lower_dev != lower)
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+		return;
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+
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+	netdev->gso_max_size = lower->gso_max_size;
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+	netdev->gso_max_segs = lower->gso_max_segs;
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+
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+	netdev_update_features(netdev);
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+}
284293 
285294 static void nfp_repr_clean(struct nfp_repr *repr)
286295 {
....@@ -291,7 +300,6 @@
291300 }
292301 
293302 static struct lock_class_key nfp_repr_netdev_xmit_lock_key;
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-static struct lock_class_key nfp_repr_netdev_addr_lock_key;
295303 
296304 static void nfp_repr_set_lockdep_class_one(struct net_device *dev,
297305 					   struct netdev_queue *txq,
....@@ -302,7 +310,6 @@
302310 
303311 static void nfp_repr_set_lockdep_class(struct net_device *dev)
304312 {
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-	lockdep_set_class(&dev->addr_list_lock, &nfp_repr_netdev_addr_lock_key);
306313 	netdev_for_each_tx_queue(dev, nfp_repr_set_lockdep_class_one, NULL);
307314 }
308315 
....@@ -311,6 +318,8 @@
311318 		  struct net_device *pf_netdev)
312319 {
313320 	struct nfp_repr *repr = netdev_priv(netdev);
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+	struct nfp_net *nn = netdev_priv(pf_netdev);
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+	u32 repr_cap = nn->tlv_caps.repr_cap;
314323 	int err;
315324 
316325 	nfp_repr_set_lockdep_class(netdev);
....@@ -327,9 +336,54 @@
327336 
328337 	netdev->max_mtu = pf_netdev->max_mtu;
329338 
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-	SWITCHDEV_SET_OPS(netdev, &nfp_port_switchdev_ops);
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+	/* Set features the lower device can support with representors */
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+	if (repr_cap & NFP_NET_CFG_CTRL_LIVE_ADDR)
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+		netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
331342 
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-	netdev->priv_flags |= IFF_DISABLE_NETPOLL;
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+	netdev->hw_features = NETIF_F_HIGHDMA;
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+	if (repr_cap & NFP_NET_CFG_CTRL_RXCSUM_ANY)
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+		netdev->hw_features |= NETIF_F_RXCSUM;
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+	if (repr_cap & NFP_NET_CFG_CTRL_TXCSUM)
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+		netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
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+	if (repr_cap & NFP_NET_CFG_CTRL_GATHER)
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+		netdev->hw_features |= NETIF_F_SG;
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+	if ((repr_cap & NFP_NET_CFG_CTRL_LSO && nn->fw_ver.major > 2) ||
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+	    repr_cap & NFP_NET_CFG_CTRL_LSO2)
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+		netdev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
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+	if (repr_cap & NFP_NET_CFG_CTRL_RSS_ANY)
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+		netdev->hw_features |= NETIF_F_RXHASH;
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+	if (repr_cap & NFP_NET_CFG_CTRL_VXLAN) {
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+		if (repr_cap & NFP_NET_CFG_CTRL_LSO)
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+			netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
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+	}
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+	if (repr_cap & NFP_NET_CFG_CTRL_NVGRE) {
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+		if (repr_cap & NFP_NET_CFG_CTRL_LSO)
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+			netdev->hw_features |= NETIF_F_GSO_GRE;
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+	}
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+	if (repr_cap & (NFP_NET_CFG_CTRL_VXLAN | NFP_NET_CFG_CTRL_NVGRE))
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+		netdev->hw_enc_features = netdev->hw_features;
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+
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+	netdev->vlan_features = netdev->hw_features;
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+
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+	if (repr_cap & NFP_NET_CFG_CTRL_RXVLAN)
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+		netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
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+	if (repr_cap & NFP_NET_CFG_CTRL_TXVLAN) {
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+		if (repr_cap & NFP_NET_CFG_CTRL_LSO2)
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+			netdev_warn(netdev, "Device advertises both TSO2 and TXVLAN. Refusing to enable TXVLAN.\n");
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+		else
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+			netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
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+	}
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+	if (repr_cap & NFP_NET_CFG_CTRL_CTAG_FILTER)
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+		netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
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+
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+	netdev->features = netdev->hw_features;
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+
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+	/* Advertise but disable TSO by default. */
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+	netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
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+	netdev->gso_max_segs = NFP_NET_LSO_MAX_SEGS;
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+
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+	netdev->priv_flags |= IFF_NO_QUEUE | IFF_DISABLE_NETPOLL;
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+	netdev->features |= NETIF_F_LLTX;
333387 
334388 	if (nfp_app_has_tc(app)) {
335389 		netdev->features |= NETIF_F_HW_TC;
....@@ -474,7 +528,9 @@
474528 			continue;
475529 
476530 		nfp_app_repr_preclean(app, netdev);
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+		rtnl_lock();
477532 		rcu_assign_pointer(reprs->reprs[i], NULL);
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+		rtnl_unlock();
478534 		synchronize_rcu();
479535 		nfp_repr_clean(repr);
480536 	}