Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from David Miller:
 "Another merge window, another pull full of stuff:

   1) Support alternative names for network devices, from Jiri Pirko.

   2) Introduce per-netns netdev notifiers, also from Jiri Pirko.

   3) Support MSG_PEEK in vsock/virtio, from Matias Ezequiel Vara
      Larsen.

   4) Allow compiling out the TLS TOE code, from Jakub Kicinski.

   5) Add several new tracepoints to the kTLS code, also from Jakub.

   6) Support set channels ethtool callback in ena driver, from Sameeh
      Jubran.

   7) New SCTP events SCTP_ADDR_ADDED, SCTP_ADDR_REMOVED,
      SCTP_ADDR_MADE_PRIM, and SCTP_SEND_FAILED_EVENT. From Xin Long.

   8) Add XDP support to mvneta driver, from Lorenzo Bianconi.

   9) Lots of netfilter hw offload fixes, cleanups and enhancements,
      from Pablo Neira Ayuso.

  10) PTP support for aquantia chips, from Egor Pomozov.

  11) Add UDP segmentation offload support to igb, ixgbe, and i40e. From
      Josh Hunt.

  12) Add smart nagle to tipc, from Jon Maloy.

  13) Support L2 field rewrite by TC offloads in bnxt_en, from Venkat
      Duvvuru.

  14) Add a flow mask cache to OVS, from Tonghao Zhang.

  15) Add XDP support to ice driver, from Maciej Fijalkowski.

  16) Add AF_XDP support to ice driver, from Krzysztof Kazimierczak.

  17) Support UDP GSO offload in atlantic driver, from Igor Russkikh.

  18) Support it in stmmac driver too, from Jose Abreu.

  19) Support TIPC encryption and auth, from Tuong Lien.

  20) Introduce BPF trampolines, from Alexei Starovoitov.

  21) Make page_pool API more numa friendly, from Saeed Mahameed.

  22) Introduce route hints to ipv4 and ipv6, from Paolo Abeni.

  23) Add UDP segmentation offload to cxgb4, Rahul Lakkireddy"

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1857 commits)
  libbpf: Fix usage of u32 in userspace code
  mm: Implement no-MMU variant of vmalloc_user_node_flags
  slip: Fix use-after-free Read in slip_open
  net: dsa: sja1105: fix sja1105_parse_rgmii_delays()
  macvlan: schedule bc_work even if error
  enetc: add support Credit Based Shaper(CBS) for hardware offload
  net: phy: add helpers phy_(un)lock_mdio_bus
  mdio_bus: don't use managed reset-controller
  ax88179_178a: add ethtool_op_get_ts_info()
  mlxsw: spectrum_router: Fix use of uninitialized adjacency index
  mlxsw: spectrum_router: After underlay moves, demote conflicting tunnels
  bpf: Simplify __bpf_arch_text_poke poke type handling
  bpf: Introduce BPF_TRACE_x helper for the tracing tests
  bpf: Add bpf_jit_blinding_enabled for !CONFIG_BPF_JIT
  bpf, testing: Add various tail call test cases
  bpf, x86: Emit patchable direct jump as tail call
  bpf: Constant map key tracking for prog array pokes
  bpf: Add poke dependency tracking for prog array maps
  bpf: Add initial poke descriptor table for jit images
  bpf: Move owner type, jited info into array auxiliary data
  ...

1 files changed, 212 insertions, 183 deletions

diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index 44c2d857a7fa..059711edfc61 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -90,6 +90,10 @@ static int nsim_dev_debugfs_init(struct nsim_dev *nsim_dev)
 			    &nsim_dev->test1);
 	debugfs_create_file("take_snapshot", 0200, nsim_dev->ddir, nsim_dev,
 			    &nsim_dev_take_snapshot_fops);
+	debugfs_create_bool("dont_allow_reload", 0600, nsim_dev->ddir,
+			    &nsim_dev->dont_allow_reload);
+	debugfs_create_bool("fail_reload", 0600, nsim_dev->ddir,
+			    &nsim_dev->fail_reload);
 	return 0;
 }
 
@@ -123,39 +127,6 @@ static void nsim_dev_port_debugfs_exit(struct nsim_dev_port *nsim_dev_port)
 	debugfs_remove_recursive(nsim_dev_port->ddir);
 }
 
-static struct net *nsim_devlink_net(struct devlink *devlink)
-{
-	return &init_net;
-}
-
-static u64 nsim_dev_ipv4_fib_resource_occ_get(void *priv)
-{
-	struct net *net = priv;
-
-	return nsim_fib_get_val(net, NSIM_RESOURCE_IPV4_FIB, false);
-}
-
-static u64 nsim_dev_ipv4_fib_rules_res_occ_get(void *priv)
-{
-	struct net *net = priv;
-
-	return nsim_fib_get_val(net, NSIM_RESOURCE_IPV4_FIB_RULES, false);
-}
-
-static u64 nsim_dev_ipv6_fib_resource_occ_get(void *priv)
-{
-	struct net *net = priv;
-
-	return nsim_fib_get_val(net, NSIM_RESOURCE_IPV6_FIB, false);
-}
-
-static u64 nsim_dev_ipv6_fib_rules_res_occ_get(void *priv)
-{
-	struct net *net = priv;
-
-	return nsim_fib_get_val(net, NSIM_RESOURCE_IPV6_FIB_RULES, false);
-}
-
 static int nsim_dev_resources_register(struct devlink *devlink)
 {
 	struct devlink_resource_size_params params = {
@@ -163,9 +134,7 @@ static int nsim_dev_resources_register(struct devlink *devlink)
 		.size_granularity = 1,
 		.unit = DEVLINK_RESOURCE_UNIT_ENTRY
 	};
-	struct net *net = nsim_devlink_net(devlink);
 	int err;
-	u64 n;
 
 	/* Resources for IPv4 */
 	err = devlink_resource_register(devlink, "IPv4", (u64)-1,
@@ -177,8 +146,7 @@ static int nsim_dev_resources_register(struct devlink *devlink)
 		goto out;
 	}
 
-	n = nsim_fib_get_val(net, NSIM_RESOURCE_IPV4_FIB, true);
-	err = devlink_resource_register(devlink, "fib", n,
+	err = devlink_resource_register(devlink, "fib", (u64)-1,
 					NSIM_RESOURCE_IPV4_FIB,
 					NSIM_RESOURCE_IPV4, &params);
 	if (err) {
@@ -186,8 +154,7 @@ static int nsim_dev_resources_register(struct devlink *devlink)
 		return err;
 	}
 
-	n = nsim_fib_get_val(net, NSIM_RESOURCE_IPV4_FIB_RULES, true);
-	err = devlink_resource_register(devlink, "fib-rules", n,
+	err = devlink_resource_register(devlink, "fib-rules", (u64)-1,
 					NSIM_RESOURCE_IPV4_FIB_RULES,
 					NSIM_RESOURCE_IPV4, &params);
 	if (err) {
@@ -205,8 +172,7 @@ static int nsim_dev_resources_register(struct devlink *devlink)
 		goto out;
 	}
 
-	n = nsim_fib_get_val(net, NSIM_RESOURCE_IPV6_FIB, true);
-	err = devlink_resource_register(devlink, "fib", n,
+	err = devlink_resource_register(devlink, "fib", (u64)-1,
 					NSIM_RESOURCE_IPV6_FIB,
 					NSIM_RESOURCE_IPV6, &params);
 	if (err) {
@@ -214,8 +180,7 @@ static int nsim_dev_resources_register(struct devlink *devlink)
 		return err;
 	}
 
-	n = nsim_fib_get_val(net, NSIM_RESOURCE_IPV6_FIB_RULES, true);
-	err = devlink_resource_register(devlink, "fib-rules", n,
+	err = devlink_resource_register(devlink, "fib-rules", (u64)-1,
 					NSIM_RESOURCE_IPV6_FIB_RULES,
 					NSIM_RESOURCE_IPV6, &params);
 	if (err) {
@@ -223,22 +188,6 @@ static int nsim_dev_resources_register(struct devlink *devlink)
 		return err;
 	}
 
-	devlink_resource_occ_get_register(devlink,
-					  NSIM_RESOURCE_IPV4_FIB,
-					  nsim_dev_ipv4_fib_resource_occ_get,
-					  net);
-	devlink_resource_occ_get_register(devlink,
-					  NSIM_RESOURCE_IPV4_FIB_RULES,
-					  nsim_dev_ipv4_fib_rules_res_occ_get,
-					  net);
-	devlink_resource_occ_get_register(devlink,
-					  NSIM_RESOURCE_IPV6_FIB,
-					  nsim_dev_ipv6_fib_resource_occ_get,
-					  net);
-	devlink_resource_occ_get_register(devlink,
-					  NSIM_RESOURCE_IPV6_FIB_RULES,
-					  nsim_dev_ipv6_fib_rules_res_occ_get,
-					  net);
 out:
 	return err;
 }
@@ -524,36 +473,48 @@ static void nsim_dev_traps_exit(struct devlink *devlink)
 	kfree(nsim_dev->trap_data);
 }
 
-static int nsim_dev_reload_down(struct devlink *devlink,
+static int nsim_dev_reload_create(struct nsim_dev *nsim_dev,
+				  struct netlink_ext_ack *extack);
+static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev);
+
+static int nsim_dev_reload_down(struct devlink *devlink, bool netns_change,
 				struct netlink_ext_ack *extack)
 {
+	struct nsim_dev *nsim_dev = devlink_priv(devlink);
+
+	if (nsim_dev->dont_allow_reload) {
+		/* For testing purposes, user set debugfs dont_allow_reload
+		 * value to true. So forbid it.
+		 */
+		NL_SET_ERR_MSG_MOD(extack, "User forbid the reload for testing purposes");
+		return -EOPNOTSUPP;
+	}
+
+	nsim_dev_reload_destroy(nsim_dev);
 	return 0;
 }
 
 static int nsim_dev_reload_up(struct devlink *devlink,
 			      struct netlink_ext_ack *extack)
 {
-	enum nsim_resource_id res_ids[] = {
-		NSIM_RESOURCE_IPV4_FIB, NSIM_RESOURCE_IPV4_FIB_RULES,
-		NSIM_RESOURCE_IPV6_FIB, NSIM_RESOURCE_IPV6_FIB_RULES
-	};
-	struct net *net = nsim_devlink_net(devlink);
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(res_ids); ++i) {
-		int err;
-		u64 val;
+	struct nsim_dev *nsim_dev = devlink_priv(devlink);
 
-		err = devlink_resource_size_get(devlink, res_ids[i], &val);
-		if (!err) {
-			err = nsim_fib_set_max(net, res_ids[i], val, extack);
-			if (err)
-				return err;
-		}
+	if (nsim_dev->fail_reload) {
+		/* For testing purposes, user set debugfs fail_reload
+		 * value to true. Fail right away.
+		 */
+		NL_SET_ERR_MSG_MOD(extack, "User setup the reload to fail for testing purposes");
+		return -EINVAL;
 	}
-	nsim_devlink_param_load_driverinit_values(devlink);
 
-	return 0;
+	return nsim_dev_reload_create(nsim_dev, extack);
+}
+
+static int nsim_dev_info_get(struct devlink *devlink,
+			     struct devlink_info_req *req,
+			     struct netlink_ext_ack *extack)
+{
+	return devlink_info_driver_name_put(req, DRV_NAME);
 }
 
 #define NSIM_DEV_FLASH_SIZE 500000
@@ -649,6 +610,7 @@ nsim_dev_devlink_trap_action_set(struct devlink *devlink,
 static const struct devlink_ops nsim_dev_devlink_ops = {
 	.reload_down = nsim_dev_reload_down,
 	.reload_up = nsim_dev_reload_up,
+	.info_get = nsim_dev_info_get,
 	.flash_update = nsim_dev_flash_update,
 	.trap_init = nsim_dev_devlink_trap_init,
 	.trap_action_set = nsim_dev_devlink_trap_action_set,
@@ -657,95 +619,6 @@ static const struct devlink_ops nsim_dev_devlink_ops = {
 #define NSIM_DEV_MAX_MACS_DEFAULT 32
 #define NSIM_DEV_TEST1_DEFAULT true
 
-static struct nsim_dev *
-nsim_dev_create(struct nsim_bus_dev *nsim_bus_dev, unsigned int port_count)
-{
-	struct nsim_dev *nsim_dev;
-	struct devlink *devlink;
-	int err;
-
-	devlink = devlink_alloc(&nsim_dev_devlink_ops, sizeof(*nsim_dev));
-	if (!devlink)
-		return ERR_PTR(-ENOMEM);
-	nsim_dev = devlink_priv(devlink);
-	nsim_dev->nsim_bus_dev = nsim_bus_dev;
-	nsim_dev->switch_id.id_len = sizeof(nsim_dev->switch_id.id);
-	get_random_bytes(nsim_dev->switch_id.id, nsim_dev->switch_id.id_len);
-	INIT_LIST_HEAD(&nsim_dev->port_list);
-	mutex_init(&nsim_dev->port_list_lock);
-	nsim_dev->fw_update_status = true;
-	nsim_dev->max_macs = NSIM_DEV_MAX_MACS_DEFAULT;
-	nsim_dev->test1 = NSIM_DEV_TEST1_DEFAULT;
-
-	err = nsim_dev_resources_register(devlink);
-	if (err)
-		goto err_devlink_free;
-
-	err = devlink_register(devlink, &nsim_bus_dev->dev);
-	if (err)
-		goto err_resources_unregister;
-
-	err = devlink_params_register(devlink, nsim_devlink_params,
-				      ARRAY_SIZE(nsim_devlink_params));
-	if (err)
-		goto err_dl_unregister;
-	nsim_devlink_set_params_init_values(nsim_dev, devlink);
-
-	err = nsim_dev_dummy_region_init(nsim_dev, devlink);
-	if (err)
-		goto err_params_unregister;
-
-	err = nsim_dev_traps_init(devlink);
-	if (err)
-		goto err_dummy_region_exit;
-
-	err = nsim_dev_debugfs_init(nsim_dev);
-	if (err)
-		goto err_traps_exit;
-
-	err = nsim_bpf_dev_init(nsim_dev);
-	if (err)
-		goto err_debugfs_exit;
-
-	devlink_params_publish(devlink);
-	devlink_reload_enable(devlink);
-	return nsim_dev;
-
-err_debugfs_exit:
-	nsim_dev_debugfs_exit(nsim_dev);
-err_traps_exit:
-	nsim_dev_traps_exit(devlink);
-err_dummy_region_exit:
-	nsim_dev_dummy_region_exit(nsim_dev);
-err_params_unregister:
-	devlink_params_unregister(devlink, nsim_devlink_params,
-				  ARRAY_SIZE(nsim_devlink_params));
-err_dl_unregister:
-	devlink_unregister(devlink);
-err_resources_unregister:
-	devlink_resources_unregister(devlink, NULL);
-err_devlink_free:
-	devlink_free(devlink);
-	return ERR_PTR(err);
-}
-
-static void nsim_dev_destroy(struct nsim_dev *nsim_dev)
-{
-	struct devlink *devlink = priv_to_devlink(nsim_dev);
-
-	devlink_reload_disable(devlink);
-	nsim_bpf_dev_exit(nsim_dev);
-	nsim_dev_debugfs_exit(nsim_dev);
-	nsim_dev_traps_exit(devlink);
-	nsim_dev_dummy_region_exit(nsim_dev);
-	devlink_params_unregister(devlink, nsim_devlink_params,
-				  ARRAY_SIZE(nsim_devlink_params));
-	devlink_unregister(devlink);
-	devlink_resources_unregister(devlink, NULL);
-	mutex_destroy(&nsim_dev->port_list_lock);
-	devlink_free(devlink);
-}
-
 static int __nsim_dev_port_add(struct nsim_dev *nsim_dev,
 			       unsigned int port_index)
 {
@@ -815,39 +688,195 @@ static void nsim_dev_port_del_all(struct nsim_dev *nsim_dev)
 	mutex_unlock(&nsim_dev->port_list_lock);
 }
 
-int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev)
+static int nsim_dev_port_add_all(struct nsim_dev *nsim_dev,
+				 unsigned int port_count)
 {
-	struct nsim_dev *nsim_dev;
-	int i;
-	int err;
-
-	nsim_dev = nsim_dev_create(nsim_bus_dev, nsim_bus_dev->port_count);
-	if (IS_ERR(nsim_dev))
-		return PTR_ERR(nsim_dev);
-	dev_set_drvdata(&nsim_bus_dev->dev, nsim_dev);
+	int i, err;
 
-	mutex_lock(&nsim_dev->port_list_lock);
-	for (i = 0; i < nsim_bus_dev->port_count; i++) {
+	for (i = 0; i < port_count; i++) {
 		err = __nsim_dev_port_add(nsim_dev, i);
 		if (err)
 			goto err_port_del_all;
 	}
-	mutex_unlock(&nsim_dev->port_list_lock);
 	return 0;
 
 err_port_del_all:
-	mutex_unlock(&nsim_dev->port_list_lock);
 	nsim_dev_port_del_all(nsim_dev);
-	nsim_dev_destroy(nsim_dev);
 	return err;
 }
 
+static int nsim_dev_reload_create(struct nsim_dev *nsim_dev,
+				  struct netlink_ext_ack *extack)
+{
+	struct nsim_bus_dev *nsim_bus_dev = nsim_dev->nsim_bus_dev;
+	struct devlink *devlink;
+	int err;
+
+	devlink = priv_to_devlink(nsim_dev);
+	nsim_dev = devlink_priv(devlink);
+	INIT_LIST_HEAD(&nsim_dev->port_list);
+	mutex_init(&nsim_dev->port_list_lock);
+	nsim_dev->fw_update_status = true;
+
+	nsim_dev->fib_data = nsim_fib_create(devlink, extack);
+	if (IS_ERR(nsim_dev->fib_data))
+		return PTR_ERR(nsim_dev->fib_data);
+
+	nsim_devlink_param_load_driverinit_values(devlink);
+
+	err = nsim_dev_dummy_region_init(nsim_dev, devlink);
+	if (err)
+		goto err_fib_destroy;
+
+	err = nsim_dev_traps_init(devlink);
+	if (err)
+		goto err_dummy_region_exit;
+
+	err = nsim_dev_health_init(nsim_dev, devlink);
+	if (err)
+		goto err_traps_exit;
+
+	err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count);
+	if (err)
+		goto err_health_exit;
+
+	return 0;
+
+err_health_exit:
+	nsim_dev_health_exit(nsim_dev);
+err_traps_exit:
+	nsim_dev_traps_exit(devlink);
+err_dummy_region_exit:
+	nsim_dev_dummy_region_exit(nsim_dev);
+err_fib_destroy:
+	nsim_fib_destroy(devlink, nsim_dev->fib_data);
+	return err;
+}
+
+int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev)
+{
+	struct nsim_dev *nsim_dev;
+	struct devlink *devlink;
+	int err;
+
+	devlink = devlink_alloc(&nsim_dev_devlink_ops, sizeof(*nsim_dev));
+	if (!devlink)
+		return -ENOMEM;
+	devlink_net_set(devlink, nsim_bus_dev->initial_net);
+	nsim_dev = devlink_priv(devlink);
+	nsim_dev->nsim_bus_dev = nsim_bus_dev;
+	nsim_dev->switch_id.id_len = sizeof(nsim_dev->switch_id.id);
+	get_random_bytes(nsim_dev->switch_id.id, nsim_dev->switch_id.id_len);
+	INIT_LIST_HEAD(&nsim_dev->port_list);
+	mutex_init(&nsim_dev->port_list_lock);
+	nsim_dev->fw_update_status = true;
+	nsim_dev->max_macs = NSIM_DEV_MAX_MACS_DEFAULT;
+	nsim_dev->test1 = NSIM_DEV_TEST1_DEFAULT;
+
+	dev_set_drvdata(&nsim_bus_dev->dev, nsim_dev);
+
+	err = nsim_dev_resources_register(devlink);
+	if (err)
+		goto err_devlink_free;
+
+	nsim_dev->fib_data = nsim_fib_create(devlink, NULL);
+	if (IS_ERR(nsim_dev->fib_data)) {
+		err = PTR_ERR(nsim_dev->fib_data);
+		goto err_resources_unregister;
+	}
+
+	err = devlink_register(devlink, &nsim_bus_dev->dev);
+	if (err)
+		goto err_fib_destroy;
+
+	err = devlink_params_register(devlink, nsim_devlink_params,
+				      ARRAY_SIZE(nsim_devlink_params));
+	if (err)
+		goto err_dl_unregister;
+	nsim_devlink_set_params_init_values(nsim_dev, devlink);
+
+	err = nsim_dev_dummy_region_init(nsim_dev, devlink);
+	if (err)
+		goto err_params_unregister;
+
+	err = nsim_dev_traps_init(devlink);
+	if (err)
+		goto err_dummy_region_exit;
+
+	err = nsim_dev_debugfs_init(nsim_dev);
+	if (err)
+		goto err_traps_exit;
+
+	err = nsim_dev_health_init(nsim_dev, devlink);
+	if (err)
+		goto err_debugfs_exit;
+
+	err = nsim_bpf_dev_init(nsim_dev);
+	if (err)
+		goto err_health_exit;
+
+	err = nsim_dev_port_add_all(nsim_dev, nsim_bus_dev->port_count);
+	if (err)
+		goto err_bpf_dev_exit;
+
+	devlink_params_publish(devlink);
+	devlink_reload_enable(devlink);
+	return 0;
+
+err_bpf_dev_exit:
+	nsim_bpf_dev_exit(nsim_dev);
+err_health_exit:
+	nsim_dev_health_exit(nsim_dev);
+err_debugfs_exit:
+	nsim_dev_debugfs_exit(nsim_dev);
+err_traps_exit:
+	nsim_dev_traps_exit(devlink);
+err_dummy_region_exit:
+	nsim_dev_dummy_region_exit(nsim_dev);
+err_params_unregister:
+	devlink_params_unregister(devlink, nsim_devlink_params,
+				  ARRAY_SIZE(nsim_devlink_params));
+err_dl_unregister:
+	devlink_unregister(devlink);
+err_fib_destroy:
+	nsim_fib_destroy(devlink, nsim_dev->fib_data);
+err_resources_unregister:
+	devlink_resources_unregister(devlink, NULL);
+err_devlink_free:
+	devlink_free(devlink);
+	return err;
+}
+
+static void nsim_dev_reload_destroy(struct nsim_dev *nsim_dev)
+{
+	struct devlink *devlink = priv_to_devlink(nsim_dev);
+
+	if (devlink_is_reload_failed(devlink))
+		return;
+	nsim_dev_port_del_all(nsim_dev);
+	nsim_dev_health_exit(nsim_dev);
+	nsim_dev_traps_exit(devlink);
+	nsim_dev_dummy_region_exit(nsim_dev);
+	mutex_destroy(&nsim_dev->port_list_lock);
+	nsim_fib_destroy(devlink, nsim_dev->fib_data);
+}
+
 void nsim_dev_remove(struct nsim_bus_dev *nsim_bus_dev)
 {
 	struct nsim_dev *nsim_dev = dev_get_drvdata(&nsim_bus_dev->dev);
+	struct devlink *devlink = priv_to_devlink(nsim_dev);
 
-	nsim_dev_port_del_all(nsim_dev);
-	nsim_dev_destroy(nsim_dev);
+	devlink_reload_disable(devlink);
+
+	nsim_dev_reload_destroy(nsim_dev);
+
+	nsim_bpf_dev_exit(nsim_dev);
+	nsim_dev_debugfs_exit(nsim_dev);
+	devlink_params_unregister(devlink, nsim_devlink_params,
+				  ARRAY_SIZE(nsim_devlink_params));
+	devlink_unregister(devlink);
+	devlink_resources_unregister(devlink, NULL);
+	devlink_free(devlink);
 }
 
 static struct nsim_dev_port *