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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c 
 kernel/include/linux/netdevice.h
....@@ -1,3 +1,4 @@
1
+/* SPDX-License-Identifier: GPL-2.0-or-later */
12 /*
23  * INET		An implementation of the TCP/IP protocol suite for the LINUX
34  *		operating system.  INET is implemented using the  BSD Socket
....@@ -14,11 +15,6 @@
1415  *		Alan Cox, <alan@lxorguk.ukuu.org.uk>
1516  *		Bjorn Ekwall. <bj0rn@blox.se>
1617  *              Pekka Riikonen <priikone@poseidon.pspt.fi>
17
- *
18
- *		This program is free software; you can redistribute it and/or
19
- *		modify it under the terms of the GNU General Public License
20
- *		as published by the Free Software Foundation; either version
21
- *		2 of the License, or (at your option) any later version.
2218  *
2319  *		Moved to /usr/include/linux for NET3
2420  */
....@@ -58,6 +54,9 @@
5854 struct device;
5955 struct phy_device;
6056 struct dsa_port;
57
+struct ip_tunnel_parm;
58
+struct macsec_context;
59
+struct macsec_ops;
6160 
6261 struct sfp_bus;
6362 /* 802.11 specific */
....@@ -67,15 +66,20 @@
6766 struct mpls_dev;
6867 /* UDP Tunnel offloads */
6968 struct udp_tunnel_info;
69
+struct udp_tunnel_nic_info;
70
+struct udp_tunnel_nic;
7071 struct bpf_prog;
7172 struct xdp_buff;
7273 
74
+void synchronize_net(void);
7375 void netdev_set_default_ethtool_ops(struct net_device *dev,
7476 				    const struct ethtool_ops *ops);
7577 
7678 /* Backlog congestion levels */
7779 #define NET_RX_SUCCESS		0	/* keep 'em coming, baby */
7880 #define NET_RX_DROP		1	/* packet dropped */
81
+
82
+#define MAX_NEST_DEV 8
7983 
8084 /*
8185  * Transmit return codes: transmit return codes originate from three different
....@@ -195,8 +199,8 @@
195199 
196200 #ifdef CONFIG_RPS
197201 #include <linux/static_key.h>
198
-extern struct static_key rps_needed;
199
-extern struct static_key rfs_needed;
202
+extern struct static_key_false rps_needed;
203
+extern struct static_key_false rfs_needed;
200204 #endif
201205 
202206 struct neighbour;
....@@ -209,9 +213,8 @@
209213 	unsigned char		type;
210214 #define NETDEV_HW_ADDR_T_LAN		1
211215 #define NETDEV_HW_ADDR_T_SAN		2
212
-#define NETDEV_HW_ADDR_T_SLAVE		3
213
-#define NETDEV_HW_ADDR_T_UNICAST	4
214
-#define NETDEV_HW_ADDR_T_MULTICAST	5
216
+#define NETDEV_HW_ADDR_T_UNICAST	3
217
+#define NETDEV_HW_ADDR_T_MULTICAST	4
215218 	bool			global_use;
216219 	int			sync_cnt;
217220 	int			refcount;
....@@ -275,6 +278,7 @@
275278 				const struct net_device *dev,
276279 				const unsigned char *haddr);
277280 	bool	(*validate)(const char *ll_header, unsigned int len);
281
+	__be16	(*parse_protocol)(const struct sk_buff *skb);
278282 
279283 	ANDROID_KABI_RESERVE(1);
280284 	ANDROID_KABI_RESERVE(2);
....@@ -291,6 +295,7 @@
291295 	__LINK_STATE_NOCARRIER,
292296 	__LINK_STATE_LINKWATCH_PENDING,
293297 	__LINK_STATE_DORMANT,
298
+	__LINK_STATE_TESTING,
294299 };
295300 
296301 
....@@ -331,6 +336,7 @@
331336 
332337 	unsigned long		state;
333338 	int			weight;
339
+	int			defer_hard_irqs_count;
334340 	unsigned long		gro_bitmask;
335341 	int			(*poll)(struct napi_struct *, int);
336342 #ifdef CONFIG_NETPOLL
....@@ -339,6 +345,8 @@
339345 	struct net_device	*dev;
340346 	struct gro_list		gro_hash[GRO_HASH_BUCKETS];
341347 	struct sk_buff		*skb;
348
+	struct list_head	rx_list; /* Pending GRO_NORMAL skbs */
349
+	int			rx_count; /* length of rx_list */
342350 	struct hrtimer		timer;
343351 	struct list_head	dev_list;
344352 	struct hlist_node	napi_hash_node;
....@@ -355,7 +363,7 @@
355363 	NAPI_STATE_MISSED,	/* reschedule a napi */
356364 	NAPI_STATE_DISABLE,	/* Disable pending */
357365 	NAPI_STATE_NPSVC,	/* Netpoll - don't dequeue from poll_list */
358
-	NAPI_STATE_HASHED,	/* In NAPI hash (busy polling possible) */
366
+	NAPI_STATE_LISTED,	/* NAPI added to system lists */
359367 	NAPI_STATE_NO_BUSY_POLL,/* Do not add in napi_hash, no busy polling */
360368 	NAPI_STATE_IN_BUSY_POLL,/* sk_busy_loop() owns this NAPI */
361369 };
....@@ -365,7 +373,7 @@
365373 	NAPIF_STATE_MISSED	 = BIT(NAPI_STATE_MISSED),
366374 	NAPIF_STATE_DISABLE	 = BIT(NAPI_STATE_DISABLE),
367375 	NAPIF_STATE_NPSVC	 = BIT(NAPI_STATE_NPSVC),
368
-	NAPIF_STATE_HASHED	 = BIT(NAPI_STATE_HASHED),
376
+	NAPIF_STATE_LISTED	 = BIT(NAPI_STATE_LISTED),
369377 	NAPIF_STATE_NO_BUSY_POLL = BIT(NAPI_STATE_NO_BUSY_POLL),
370378 	NAPIF_STATE_IN_BUSY_POLL = BIT(NAPI_STATE_IN_BUSY_POLL),
371379 };
....@@ -490,20 +498,6 @@
490498 }
491499 
492500 /**
493
- *	napi_hash_del - remove a NAPI from global table
494
- *	@napi: NAPI context
495
- *
496
- * Warning: caller must observe RCU grace period
497
- * before freeing memory containing @napi, if
498
- * this function returns true.
499
- * Note: core networking stack automatically calls it
500
- * from netif_napi_del().
501
- * Drivers might want to call this helper to combine all
502
- * the needed RCU grace periods into a single one.
503
- */
504
-bool napi_hash_del(struct napi_struct *napi);
505
-
506
-/**
507501  *	napi_disable - prevent NAPI from scheduling
508502  *	@n: NAPI context
509503  *
....@@ -542,6 +536,32 @@
542536 			msleep(1);
543537 	else
544538 		barrier();
539
+}
540
+
541
+/**
542
+ *	napi_if_scheduled_mark_missed - if napi is running, set the
543
+ *	NAPIF_STATE_MISSED
544
+ *	@n: NAPI context
545
+ *
546
+ * If napi is running, set the NAPIF_STATE_MISSED, and return true if
547
+ * NAPI is scheduled.
548
+ **/
549
+static inline bool napi_if_scheduled_mark_missed(struct napi_struct *n)
550
+{
551
+	unsigned long val, new;
552
+
553
+	do {
554
+		val = READ_ONCE(n->state);
555
+		if (val & NAPIF_STATE_DISABLE)
556
+			return true;
557
+
558
+		if (!(val & NAPIF_STATE_SCHED))
559
+			return false;
560
+
561
+		new = val | NAPIF_STATE_MISSED;
562
+	} while (cmpxchg(&n->state, val, new) != val);
563
+
564
+	return true;
545565 }
546566 
547567 enum netdev_queue_state_t {
....@@ -592,6 +612,9 @@
592612 
593613 	/* Subordinate device that the queue has been assigned to */
594614 	struct net_device	*sb_dev;
615
+#ifdef CONFIG_XDP_SOCKETS
616
+	struct xsk_buff_pool    *pool;
617
+#endif
595618 /*
596619  * write-mostly part
597620  */
....@@ -615,12 +638,32 @@
615638 } ____cacheline_aligned_in_smp;
616639 
617640 extern int sysctl_fb_tunnels_only_for_init_net;
641
+extern int sysctl_devconf_inherit_init_net;
618642 
643
+/*
644
+ * sysctl_fb_tunnels_only_for_init_net == 0 : For all netns
645
+ *                                     == 1 : For initns only
646
+ *                                     == 2 : For none.
647
+ */
619648 static inline bool net_has_fallback_tunnels(const struct net *net)
620649 {
621
-	return net == &init_net ||
622
-	       !IS_ENABLED(CONFIG_SYSCTL) ||
623
-	       !sysctl_fb_tunnels_only_for_init_net;
650
+#if IS_ENABLED(CONFIG_SYSCTL)
651
+	int fb_tunnels_only_for_init_net = READ_ONCE(sysctl_fb_tunnels_only_for_init_net);
652
+
653
+	return !fb_tunnels_only_for_init_net ||
654
+		(net_eq(net, &init_net) && fb_tunnels_only_for_init_net == 1);
655
+#else
656
+	return true;
657
+#endif
658
+}
659
+
660
+static inline int net_inherit_devconf(void)
661
+{
662
+#if IS_ENABLED(CONFIG_SYSCTL)
663
+	return READ_ONCE(sysctl_devconf_inherit_init_net);
664
+#else
665
+	return 0;
666
+#endif
624667 }
625668 
626669 static inline int netdev_queue_numa_node_read(const struct netdev_queue *q)
....@@ -647,7 +690,7 @@
647690 struct rps_map {
648691 	unsigned int len;
649692 	struct rcu_head rcu;
650
-	u16 cpus[0];
693
+	u16 cpus[];
651694 };
652695 #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + ((_num) * sizeof(u16)))
653696 
....@@ -669,7 +712,7 @@
669712 struct rps_dev_flow_table {
670713 	unsigned int mask;
671714 	struct rcu_head rcu;
672
-	struct rps_dev_flow flows[0];
715
+	struct rps_dev_flow flows[];
673716 };
674717 #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \
675718     ((_num) * sizeof(struct rps_dev_flow)))
....@@ -687,7 +730,7 @@
687730 struct rps_sock_flow_table {
688731 	u32	mask;
689732 
690
-	u32	ents[0] ____cacheline_aligned_in_smp;
733
+	u32	ents[] ____cacheline_aligned_in_smp;
691734 };
692735 #define	RPS_SOCK_FLOW_TABLE_SIZE(_num) (offsetof(struct rps_sock_flow_table, ents[_num]))
693736 
....@@ -726,6 +769,9 @@
726769 	struct kobject			kobj;
727770 	struct net_device		*dev;
728771 	struct xdp_rxq_info		xdp_rxq;
772
+#ifdef CONFIG_XDP_SOCKETS
773
+	struct xsk_buff_pool            *pool;
774
+#endif
729775 
730776 	ANDROID_KABI_RESERVE(1);
731777 	ANDROID_KABI_RESERVE(2);
....@@ -752,7 +798,7 @@
752798 	unsigned int len;
753799 	unsigned int alloc_len;
754800 	struct rcu_head rcu;
755
-	u16 queues[0];
801
+	u16 queues[];
756802 };
757803 #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + ((_num) * sizeof(u16)))
758804 #define XPS_MIN_MAP_ALLOC ((L1_CACHE_ALIGN(offsetof(struct xps_map, queues[1])) \
....@@ -763,7 +809,7 @@
763809  */
764810 struct xps_dev_maps {
765811 	struct rcu_head rcu;
766
-	struct xps_map __rcu *attr_map[0]; /* Either CPUs map or RXQs map */
812
+	struct xps_map __rcu *attr_map[]; /* Either CPUs map or RXQs map */
767813 };
768814 
769815 #define XPS_CPU_DEV_MAPS_SIZE(_tcs) (sizeof(struct xps_dev_maps) +	\
....@@ -832,6 +878,13 @@
832878 	TC_SETUP_QDISC_PRIO,
833879 	TC_SETUP_QDISC_MQ,
834880 	TC_SETUP_QDISC_ETF,
881
+	TC_SETUP_ROOT_QDISC,
882
+	TC_SETUP_QDISC_GRED,
883
+	TC_SETUP_QDISC_TAPRIO,
884
+	TC_SETUP_FT,
885
+	TC_SETUP_QDISC_ETS,
886
+	TC_SETUP_QDISC_TBF,
887
+	TC_SETUP_QDISC_FIFO,
835888 };
836889 
837890 /* These structures hold the attributes of bpf state that are being passed
....@@ -847,21 +900,29 @@
847900 	 */
848901 	XDP_SETUP_PROG,
849902 	XDP_SETUP_PROG_HW,
850
-	XDP_QUERY_PROG,
851
-	XDP_QUERY_PROG_HW,
852903 	/* BPF program for offload callbacks, invoked at program load time. */
853
-	BPF_OFFLOAD_VERIFIER_PREP,
854
-	BPF_OFFLOAD_TRANSLATE,
855
-	BPF_OFFLOAD_DESTROY,
856904 	BPF_OFFLOAD_MAP_ALLOC,
857905 	BPF_OFFLOAD_MAP_FREE,
858
-	XDP_QUERY_XSK_UMEM,
859
-	XDP_SETUP_XSK_UMEM,
906
+	XDP_SETUP_XSK_POOL,
860907 };
861908 
862909 struct bpf_prog_offload_ops;
863910 struct netlink_ext_ack;
864911 struct xdp_umem;
912
+struct xdp_dev_bulk_queue;
913
+struct bpf_xdp_link;
914
+
915
+enum bpf_xdp_mode {
916
+	XDP_MODE_SKB = 0,
917
+	XDP_MODE_DRV = 1,
918
+	XDP_MODE_HW = 2,
919
+	__MAX_XDP_MODE
920
+};
921
+
922
+struct bpf_xdp_entity {
923
+	struct bpf_prog *prog;
924
+	struct bpf_xdp_link *link;
925
+};
865926 
866927 struct netdev_bpf {
867928 	enum bpf_netdev_command command;
....@@ -872,32 +933,21 @@
872933 			struct bpf_prog *prog;
873934 			struct netlink_ext_ack *extack;
874935 		};
875
-		/* XDP_QUERY_PROG, XDP_QUERY_PROG_HW */
876
-		struct {
877
-			u32 prog_id;
878
-			/* flags with which program was installed */
879
-			u32 prog_flags;
880
-		};
881
-		/* BPF_OFFLOAD_VERIFIER_PREP */
882
-		struct {
883
-			struct bpf_prog *prog;
884
-			const struct bpf_prog_offload_ops *ops; /* callee set */
885
-		} verifier;
886
-		/* BPF_OFFLOAD_TRANSLATE, BPF_OFFLOAD_DESTROY */
887
-		struct {
888
-			struct bpf_prog *prog;
889
-		} offload;
890936 		/* BPF_OFFLOAD_MAP_ALLOC, BPF_OFFLOAD_MAP_FREE */
891937 		struct {
892938 			struct bpf_offloaded_map *offmap;
893939 		};
894
-		/* XDP_QUERY_XSK_UMEM, XDP_SETUP_XSK_UMEM */
940
+		/* XDP_SETUP_XSK_POOL */
895941 		struct {
896
-			struct xdp_umem *umem; /* out for query*/
897
-			u16 queue_id; /* in for query */
942
+			struct xsk_buff_pool *pool;
943
+			u16 queue_id;
898944 		} xsk;
899945 	};
900946 };
947
+
948
+/* Flags for ndo_xsk_wakeup. */
949
+#define XDP_WAKEUP_RX (1 << 0)
950
+#define XDP_WAKEUP_TX (1 << 1)
901951 
902952 #ifdef CONFIG_XFRM_OFFLOAD
903953 struct xfrmdev_ops {
....@@ -915,35 +965,27 @@
915965 };
916966 #endif
917967 
918
-#if IS_ENABLED(CONFIG_TLS_DEVICE)
919
-enum tls_offload_ctx_dir {
920
-	TLS_OFFLOAD_CTX_DIR_RX,
921
-	TLS_OFFLOAD_CTX_DIR_TX,
922
-};
923
-
924
-struct tls_crypto_info;
925
-struct tls_context;
926
-
927
-struct tlsdev_ops {
928
-	int (*tls_dev_add)(struct net_device *netdev, struct sock *sk,
929
-			   enum tls_offload_ctx_dir direction,
930
-			   struct tls_crypto_info *crypto_info,
931
-			   u32 start_offload_tcp_sn);
932
-	void (*tls_dev_del)(struct net_device *netdev,
933
-			    struct tls_context *ctx,
934
-			    enum tls_offload_ctx_dir direction);
935
-	void (*tls_dev_resync_rx)(struct net_device *netdev,
936
-				  struct sock *sk, u32 seq, u64 rcd_sn);
937
-	ANDROID_KABI_RESERVE(1);
938
-	ANDROID_KABI_RESERVE(2);
939
-	ANDROID_KABI_RESERVE(3);
940
-	ANDROID_KABI_RESERVE(4);
941
-};
942
-#endif
943
-
944968 struct dev_ifalias {
945969 	struct rcu_head rcuhead;
946970 	char ifalias[];
971
+};
972
+
973
+struct devlink;
974
+struct tlsdev_ops;
975
+
976
+struct netdev_name_node {
977
+	struct hlist_node hlist;
978
+	struct list_head list;
979
+	struct net_device *dev;
980
+	const char *name;
981
+};
982
+
983
+int netdev_name_node_alt_create(struct net_device *dev, const char *name);
984
+int netdev_name_node_alt_destroy(struct net_device *dev, const char *name);
985
+
986
+struct netdev_net_notifier {
987
+	struct list_head list;
988
+	struct notifier_block *nb;
947989 };
948990 
949991 /*
....@@ -989,8 +1031,7 @@
9891031  *	those the driver believes to be appropriate.
9901032  *
9911033  * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb,
992
- *                         struct net_device *sb_dev,
993
- *                         select_queue_fallback_t fallback);
1034
+ *                         struct net_device *sb_dev);
9941035  *	Called to decide which queue to use when device supports multiple
9951036  *	transmit queues.
9961037  *
....@@ -1025,7 +1066,7 @@
10251066  *	Called when a user wants to change the Maximum Transfer Unit
10261067  *	of a device.
10271068  *
1028
- * void (*ndo_tx_timeout)(struct net_device *dev);
1069
+ * void (*ndo_tx_timeout)(struct net_device *dev, unsigned int txqueue);
10291070  *	Callback used when the transmitter has not made any progress
10301071  *	for dev->watchdog ticks.
10311072  *
....@@ -1144,6 +1185,12 @@
11441185  * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev);
11451186  *	Called to release previously enslaved netdev.
11461187  *
1188
+ * struct net_device *(*ndo_get_xmit_slave)(struct net_device *dev,
1189
+ *					    struct sk_buff *skb,
1190
+ *					    bool all_slaves);
1191
+ *	Get the xmit slave of master device. If all_slaves is true, function
1192
+ *	assume all the slaves can transmit.
1193
+ *
11471194  *      Feature/offload setting functions.
11481195  * netdev_features_t (*ndo_fix_features)(struct net_device *dev,
11491196  *		netdev_features_t features);
....@@ -1158,7 +1205,8 @@
11581205  *
11591206  * int (*ndo_fdb_add)(struct ndmsg *ndm, struct nlattr *tb[],
11601207  *		      struct net_device *dev,
1161
- *		      const unsigned char *addr, u16 vid, u16 flags)
1208
+ *		      const unsigned char *addr, u16 vid, u16 flags,
1209
+ *		      struct netlink_ext_ack *extack);
11621210  *	Adds an FDB entry to dev for addr.
11631211  * int (*ndo_fdb_del)(struct ndmsg *ndm, struct nlattr *tb[],
11641212  *		      struct net_device *dev,
....@@ -1171,7 +1219,7 @@
11711219  *	entries to skb and update idx with the number of entries.
11721220  *
11731221  * int (*ndo_bridge_setlink)(struct net_device *dev, struct nlmsghdr *nlh,
1174
- *			     u16 flags)
1222
+ *			     u16 flags, struct netlink_ext_ack *extack)
11751223  * int (*ndo_bridge_getlink)(struct sk_buff *skb, u32 pid, u32 seq,
11761224  *			     struct net_device *dev, u32 filter_mask,
11771225  *			     int nlflags)
....@@ -1191,6 +1239,10 @@
11911239  *	Called to get ID of physical port of this device. If driver does
11921240  *	not implement this, it is assumed that the hw is not able to have
11931241  *	multiple net devices on single physical port.
1242
+ *
1243
+ * int (*ndo_get_port_parent_id)(struct net_device *dev,
1244
+ *				 struct netdev_phys_item_id *ppid)
1245
+ *	Called to get the parent ID of the physical port of this device.
11941246  *
11951247  * void (*ndo_udp_tunnel_add)(struct net_device *dev,
11961248  *			      struct udp_tunnel_info *ti);
....@@ -1249,6 +1301,22 @@
12491301  *	that got dropped are freed/returned via xdp_return_frame().
12501302  *	Returns negative number, means general error invoking ndo, meaning
12511303  *	no frames were xmit'ed and core-caller will free all frames.
1304
+ * int (*ndo_xsk_wakeup)(struct net_device *dev, u32 queue_id, u32 flags);
1305
+ *      This function is used to wake up the softirq, ksoftirqd or kthread
1306
+ *	responsible for sending and/or receiving packets on a specific
1307
+ *	queue id bound to an AF_XDP socket. The flags field specifies if
1308
+ *	only RX, only Tx, or both should be woken up using the flags
1309
+ *	XDP_WAKEUP_RX and XDP_WAKEUP_TX.
1310
+ * struct devlink_port *(*ndo_get_devlink_port)(struct net_device *dev);
1311
+ *	Get devlink port instance associated with a given netdev.
1312
+ *	Called with a reference on the netdevice and devlink locks only,
1313
+ *	rtnl_lock is not held.
1314
+ * int (*ndo_tunnel_ctl)(struct net_device *dev, struct ip_tunnel_parm *p,
1315
+ *			 int cmd);
1316
+ *	Add, change, delete or get information on an IPv4 tunnel.
1317
+ * struct net_device *(*ndo_get_peer_dev)(struct net_device *dev);
1318
+ *	If a device is paired with a peer device, return the peer instance.
1319
+ *	The caller must be under RCU read context.
12521320  */
12531321 struct net_device_ops {
12541322 	int			(*ndo_init)(struct net_device *dev);
....@@ -1262,8 +1330,7 @@
12621330 						      netdev_features_t features);
12631331 	u16			(*ndo_select_queue)(struct net_device *dev,
12641332 						    struct sk_buff *skb,
1265
-						    struct net_device *sb_dev,
1266
-						    select_queue_fallback_t fallback);
1333
+						    struct net_device *sb_dev);
12671334 	void			(*ndo_change_rx_flags)(struct net_device *dev,
12681335 						       int flags);
12691336 	void			(*ndo_set_rx_mode)(struct net_device *dev);
....@@ -1278,7 +1345,8 @@
12781345 						  int new_mtu);
12791346 	int			(*ndo_neigh_setup)(struct net_device *dev,
12801347 						   struct neigh_parms *);
1281
-	void			(*ndo_tx_timeout) (struct net_device *dev);
1348
+	void			(*ndo_tx_timeout) (struct net_device *dev,
1349
+						   unsigned int txqueue);
12821350 
12831351 	void			(*ndo_get_stats64)(struct net_device *dev,
12841352 						   struct rtnl_link_stats64 *storage);
....@@ -1324,6 +1392,10 @@
13241392 						   struct nlattr *port[]);
13251393 	int			(*ndo_get_vf_port)(struct net_device *dev,
13261394 						   int vf, struct sk_buff *skb);
1395
+	int			(*ndo_get_vf_guid)(struct net_device *dev,
1396
+						   int vf,
1397
+						   struct ifla_vf_guid *node_guid,
1398
+						   struct ifla_vf_guid *port_guid);
13271399 	int			(*ndo_set_vf_guid)(struct net_device *dev,
13281400 						   int vf, u64 guid,
13291401 						   int guid_type);
....@@ -1368,6 +1440,9 @@
13681440 						 struct netlink_ext_ack *extack);
13691441 	int			(*ndo_del_slave)(struct net_device *dev,
13701442 						 struct net_device *slave_dev);
1443
+	struct net_device*	(*ndo_get_xmit_slave)(struct net_device *dev,
1444
+						      struct sk_buff *skb,
1445
+						      bool all_slaves);
13711446 	netdev_features_t	(*ndo_fix_features)(struct net_device *dev,
13721447 						    netdev_features_t features);
13731448 	int			(*ndo_set_features)(struct net_device *dev,
....@@ -1382,7 +1457,8 @@
13821457 					       struct net_device *dev,
13831458 					       const unsigned char *addr,
13841459 					       u16 vid,
1385
-					       u16 flags);
1460
+					       u16 flags,
1461
+					       struct netlink_ext_ack *extack);
13861462 	int			(*ndo_fdb_del)(struct ndmsg *ndm,
13871463 					       struct nlattr *tb[],
13881464 					       struct net_device *dev,
....@@ -1393,10 +1469,16 @@
13931469 						struct net_device *dev,
13941470 						struct net_device *filter_dev,
13951471 						int *idx);
1396
-
1472
+	int			(*ndo_fdb_get)(struct sk_buff *skb,
1473
+					       struct nlattr *tb[],
1474
+					       struct net_device *dev,
1475
+					       const unsigned char *addr,
1476
+					       u16 vid, u32 portid, u32 seq,
1477
+					       struct netlink_ext_ack *extack);
13971478 	int			(*ndo_bridge_setlink)(struct net_device *dev,
13981479 						      struct nlmsghdr *nlh,
1399
-						      u16 flags);
1480
+						      u16 flags,
1481
+						      struct netlink_ext_ack *extack);
14001482 	int			(*ndo_bridge_getlink)(struct sk_buff *skb,
14011483 						      u32 pid, u32 seq,
14021484 						      struct net_device *dev,
....@@ -1409,6 +1491,8 @@
14091491 						      bool new_carrier);
14101492 	int			(*ndo_get_phys_port_id)(struct net_device *dev,
14111493 							struct netdev_phys_item_id *ppid);
1494
+	int			(*ndo_get_port_parent_id)(struct net_device *dev,
1495
+							  struct netdev_phys_item_id *ppid);
14121496 	int			(*ndo_get_phys_port_name)(struct net_device *dev,
14131497 							  char *name, size_t len);
14141498 	void			(*ndo_udp_tunnel_add)(struct net_device *dev,
....@@ -1420,7 +1504,6 @@
14201504 	void			(*ndo_dfwd_del_station)(struct net_device *pdev,
14211505 							void *priv);
14221506 
1423
-	int			(*ndo_get_lock_subclass)(struct net_device *dev);
14241507 	int			(*ndo_set_tx_maxrate)(struct net_device *dev,
14251508 						      int queue_index,
14261509 						      u32 maxrate);
....@@ -1436,8 +1519,12 @@
14361519 	int			(*ndo_xdp_xmit)(struct net_device *dev, int n,
14371520 						struct xdp_frame **xdp,
14381521 						u32 flags);
1439
-	int			(*ndo_xsk_async_xmit)(struct net_device *dev,
1440
-						      u32 queue_id);
1522
+	int			(*ndo_xsk_wakeup)(struct net_device *dev,
1523
+						  u32 queue_id, u32 flags);
1524
+	struct devlink_port *	(*ndo_get_devlink_port)(struct net_device *dev);
1525
+	int			(*ndo_tunnel_ctl)(struct net_device *dev,
1526
+						  struct ip_tunnel_parm *p, int cmd);
1527
+	struct net_device *	(*ndo_get_peer_dev)(struct net_device *dev);
14411528 
14421529 	ANDROID_KABI_RESERVE(1);
14431530 	ANDROID_KABI_RESERVE(2);
....@@ -1560,6 +1647,12 @@
15601647 #define IFF_L3MDEV_RX_HANDLER		IFF_L3MDEV_RX_HANDLER
15611648 #define IFF_LIVE_RENAME_OK		IFF_LIVE_RENAME_OK
15621649 
1650
+/* Specifies the type of the struct net_device::ml_priv pointer */
1651
+enum netdev_ml_priv_type {
1652
+	ML_PRIV_NONE,
1653
+	ML_PRIV_CAN,
1654
+};
1655
+
15631656 /**
15641657  *	struct net_device - The DEVICE structure.
15651658  *
....@@ -1571,7 +1664,7 @@
15711664  *		(i.e. as seen by users in the "Space.c" file).  It is the name
15721665  *		of the interface.
15731666  *
1574
- *	@name_hlist: 	Device name hash chain, please keep it close to name[]
1667
+ *	@name_node:	Name hashlist node
15751668  *	@ifalias:	SNMP alias
15761669  *	@mem_end:	Shared memory end
15771670  *	@mem_start:	Shared memory start
....@@ -1600,6 +1693,7 @@
16001693  *				and drivers will need to set them appropriately.
16011694  *
16021695  *	@mpls_features:	Mask of features inheritable by MPLS
1696
+ *	@gso_partial_features: value(s) from NETIF_F_GSO\*
16031697  *
16041698  *	@ifindex:	interface index
16051699  *	@group:		The group the device belongs to
....@@ -1624,8 +1718,11 @@
16241718  *	@netdev_ops:	Includes several pointers to callbacks,
16251719  *			if one wants to override the ndo_*() functions
16261720  *	@ethtool_ops:	Management operations
1721
+ *	@l3mdev_ops:	Layer 3 master device operations
16271722  *	@ndisc_ops:	Includes callbacks for different IPv6 neighbour
16281723  *			discovery handling. Necessary for e.g. 6LoWPAN.
1724
+ *	@xfrmdev_ops:	Transformation offload operations
1725
+ *	@tlsdev_ops:	Transport Layer Security offload operations
16291726  *	@header_ops:	Includes callbacks for creating,parsing,caching,etc
16301727  *			of Layer 2 headers.
16311728  *
....@@ -1664,6 +1761,7 @@
16641761  * 	@dev_port:		Used to differentiate devices that share
16651762  * 				the same function
16661763  *	@addr_list_lock:	XXX: need comments on this one
1764
+ *	@name_assign_type:	network interface name assignment type
16671765  *	@uc_promisc:		Counter that indicates promiscuous mode
16681766  *				has been enabled due to the need to listen to
16691767  *				additional unicast addresses in a device that
....@@ -1686,6 +1784,9 @@
16861784  *	@ip6_ptr:	IPv6 specific data
16871785  *	@ax25_ptr:	AX.25 specific data
16881786  *	@ieee80211_ptr:	IEEE 802.11 specific data, assign before registering
1787
+ *	@ieee802154_ptr: IEEE 802.15.4 low-rate Wireless Personal Area Network
1788
+ *			 device struct
1789
+ *	@mpls_ptr:	mpls_dev struct pointer
16891790  *
16901791  *	@dev_addr:	Hw address (before bcast,
16911792  *			because most packets are unicast)
....@@ -1694,12 +1795,17 @@
16941795  *	@num_rx_queues:		Number of RX queues
16951796  *				allocated at register_netdev() time
16961797  *	@real_num_rx_queues: 	Number of RX queues currently active in device
1798
+ *	@xdp_prog:		XDP sockets filter program pointer
1799
+ *	@gro_flush_timeout:	timeout for GRO layer in NAPI
1800
+ *	@napi_defer_hard_irqs:	If not zero, provides a counter that would
1801
+ *				allow to avoid NIC hard IRQ, on busy queues.
16971802  *
16981803  *	@rx_handler:		handler for received packets
16991804  *	@rx_handler_data: 	XXX: need comments on this one
17001805  *	@miniq_ingress:		ingress/clsact qdisc specific data for
17011806  *				ingress processing
17021807  *	@ingress_queue:		XXX: need comments on this one
1808
+ *	@nf_hooks_ingress:	netfilter hooks executed for ingress packets
17031809  *	@broadcast:		hw bcast address
17041810  *
17051811  *	@rx_cpu_rmap:	CPU reverse-mapping for RX completion interrupts,
....@@ -1714,14 +1820,19 @@
17141820  *	@qdisc:			Root qdisc from userspace point of view
17151821  *	@tx_queue_len:		Max frames per queue allowed
17161822  *	@tx_global_lock: 	XXX: need comments on this one
1823
+ *	@xdp_bulkq:		XDP device bulk queue
1824
+ *	@xps_cpus_map:		all CPUs map for XPS device
1825
+ *	@xps_rxqs_map:		all RXQs map for XPS device
17171826  *
17181827  *	@xps_maps:	XXX: need comments on this one
17191828  *	@miniq_egress:		clsact qdisc specific data for
17201829  *				egress processing
1830
+ *	@qdisc_hash:		qdisc hash table
17211831  *	@watchdog_timeo:	Represents the timeout that is used by
17221832  *				the watchdog (see dev_watchdog())
17231833  *	@watchdog_timer:	List of timers
17241834  *
1835
+ *	@proto_down_reason:	reason a netdev interface is held down
17251836  *	@pcpu_refcnt:		Number of references to this device
17261837  *	@todo_list:		Delayed register/unregister
17271838  *	@link_watch_list:	XXX: need comments on this one
....@@ -1737,6 +1848,7 @@
17371848  * 	@nd_net:		Network namespace this network device is inside
17381849  *
17391850  * 	@ml_priv:	Mid-layer private
1851
+ *	@ml_priv_type:  Mid-layer private type
17401852  * 	@lstats:	Loopback statistics
17411853  * 	@tstats:	Tunnel statistics
17421854  * 	@dstats:	Dummy statistics
....@@ -1777,13 +1889,29 @@
17771889  *
17781890  *	@wol_enabled:	Wake-on-LAN is enabled
17791891  *
1892
+ *	@net_notifier_list:	List of per-net netdev notifier block
1893
+ *				that follow this device when it is moved
1894
+ *				to another network namespace.
1895
+ *
1896
+ *	@macsec_ops:    MACsec offloading ops
1897
+ *
1898
+ *	@udp_tunnel_nic_info:	static structure describing the UDP tunnel
1899
+ *				offload capabilities of the device
1900
+ *	@udp_tunnel_nic:	UDP tunnel offload state
1901
+ *	@xdp_state:		stores info on attached XDP BPF programs
1902
+ *
1903
+ *	@nested_level:	Used as as a parameter of spin_lock_nested() of
1904
+ *			dev->addr_list_lock.
1905
+ *	@unlink_list:	As netif_addr_lock() can be called recursively,
1906
+ *			keep a list of interfaces to be deleted.
1907
+ *
17801908  *	FIXME: cleanup struct net_device such that network protocol info
17811909  *	moves out.
17821910  */
17831911 
17841912 struct net_device {
17851913 	char			name[IFNAMSIZ];
1786
-	struct hlist_node	name_hlist;
1914
+	struct netdev_name_node	*name_node;
17871915 	struct dev_ifalias	__rcu *ifalias;
17881916 	/*
17891917 	 *	I/O specific fields
....@@ -1841,9 +1969,6 @@
18411969 #endif
18421970 	const struct net_device_ops *netdev_ops;
18431971 	const struct ethtool_ops *ethtool_ops;
1844
-#ifdef CONFIG_NET_SWITCHDEV
1845
-	const struct switchdev_ops *switchdev_ops;
1846
-#endif
18471972 #ifdef CONFIG_NET_L3_MASTER_DEV
18481973 	const struct l3mdev_ops	*l3mdev_ops;
18491974 #endif
....@@ -1884,6 +2009,7 @@
18842009 	unsigned short		type;
18852010 	unsigned short		hard_header_len;
18862011 	unsigned char		min_header_len;
2012
+	unsigned char		name_assign_type;
18872013 
18882014 	unsigned short		needed_headroom;
18892015 	unsigned short		needed_tailroom;
....@@ -1894,12 +2020,12 @@
18942020 	unsigned char		addr_len;
18952021 	unsigned char		upper_level;
18962022 	unsigned char		lower_level;
2023
+
18972024 	unsigned short		neigh_priv_len;
18982025 	unsigned short          dev_id;
18992026 	unsigned short          dev_port;
19002027 	spinlock_t		addr_list_lock;
1901
-	unsigned char		name_assign_type;
1902
-	bool			uc_promisc;
2028
+
19032029 	struct netdev_hw_addr_list	uc;
19042030 	struct netdev_hw_addr_list	mc;
19052031 	struct netdev_hw_addr_list	dev_addrs;
....@@ -1907,8 +2033,15 @@
19072033 #ifdef CONFIG_SYSFS
19082034 	struct kset		*queues_kset;
19092035 #endif
2036
+#ifdef CONFIG_LOCKDEP
2037
+	struct list_head	unlink_list;
2038
+#endif
19102039 	unsigned int		promiscuity;
19112040 	unsigned int		allmulti;
2041
+	bool			uc_promisc;
2042
+#ifdef CONFIG_LOCKDEP
2043
+	unsigned char		nested_level;
2044
+#endif
19122045 
19132046 
19142047 	/* Protocol-specific pointers */
....@@ -1951,6 +2084,7 @@
19512084 
19522085 	struct bpf_prog __rcu	*xdp_prog;
19532086 	unsigned long		gro_flush_timeout;
2087
+	int			napi_defer_hard_irqs;
19542088 	rx_handler_func_t __rcu	*rx_handler;
19552089 	void __rcu		*rx_handler_data;
19562090 
....@@ -1974,13 +2108,11 @@
19742108 	struct netdev_queue	*_tx ____cacheline_aligned_in_smp;
19752109 	unsigned int		num_tx_queues;
19762110 	unsigned int		real_num_tx_queues;
1977
-	struct Qdisc		*qdisc;
1978
-#ifdef CONFIG_NET_SCHED
1979
-	DECLARE_HASHTABLE	(qdisc_hash, 4);
1980
-#endif
2111
+	struct Qdisc __rcu	*qdisc;
19812112 	unsigned int		tx_queue_len;
19822113 	spinlock_t		tx_global_lock;
1983
-	int			watchdog_timeo;
2114
+
2115
+	struct xdp_dev_bulk_queue __percpu *xdp_bulkq;
19842116 
19852117 #ifdef CONFIG_XPS
19862118 	struct xps_dev_maps __rcu *xps_cpus_map;
....@@ -1990,11 +2122,17 @@
19902122 	struct mini_Qdisc __rcu	*miniq_egress;
19912123 #endif
19922124 
2125
+#ifdef CONFIG_NET_SCHED
2126
+	DECLARE_HASHTABLE	(qdisc_hash, 4);
2127
+#endif
19932128 	/* These may be needed for future network-power-down code. */
19942129 	struct timer_list	watchdog_timer;
2130
+	int			watchdog_timeo;
19952131 
1996
-	int __percpu		*pcpu_refcnt;
2132
+	u32                     proto_down_reason;
2133
+
19972134 	struct list_head	todo_list;
2135
+	int __percpu		*pcpu_refcnt;
19982136 
19992137 	struct list_head	link_watch_list;
20002138 
....@@ -2023,12 +2161,13 @@
20232161 	possible_net_t			nd_net;
20242162 
20252163 	/* mid-layer private */
2164
+	void				*ml_priv;
2165
+	enum netdev_ml_priv_type	ml_priv_type;
2166
+
20262167 	union {
2027
-		void					*ml_priv;
20282168 		struct pcpu_lstats __percpu		*lstats;
20292169 		struct pcpu_sw_netstats __percpu	*tstats;
20302170 		struct pcpu_dstats __percpu		*dstats;
2031
-		struct pcpu_vstats __percpu		*vstats;
20322171 	};
20332172 
20342173 #if IS_ENABLED(CONFIG_GARP)
....@@ -2070,6 +2209,18 @@
20702209 	bool			proto_down;
20712210 	unsigned		wol_enabled:1;
20722211 
2212
+	struct list_head	net_notifier_list;
2213
+
2214
+#if IS_ENABLED(CONFIG_MACSEC)
2215
+	/* MACsec management functions */
2216
+	const struct macsec_ops *macsec_ops;
2217
+#endif
2218
+	const struct udp_tunnel_nic_info	*udp_tunnel_nic_info;
2219
+	struct udp_tunnel_nic	*udp_tunnel_nic;
2220
+
2221
+	/* protected by rtnl_lock */
2222
+	struct bpf_xdp_entity	xdp_state[__MAX_XDP_MODE];
2223
+
20732224 	ANDROID_KABI_RESERVE(1);
20742225 	ANDROID_KABI_RESERVE(2);
20752226 	ANDROID_KABI_RESERVE(3);
....@@ -2078,7 +2229,6 @@
20782229 	ANDROID_KABI_RESERVE(6);
20792230 	ANDROID_KABI_RESERVE(7);
20802231 	ANDROID_KABI_RESERVE(8);
2081
-
20822232 };
20832233 #define to_net_dev(d) container_of(d, struct net_device, dev)
20842234 
....@@ -2116,6 +2266,22 @@
21162266 int netdev_get_num_tc(struct net_device *dev)
21172267 {
21182268 	return dev->num_tc;
2269
+}
2270
+
2271
+static inline void net_prefetch(void *p)
2272
+{
2273
+	prefetch(p);
2274
+#if L1_CACHE_BYTES < 128
2275
+	prefetch((u8 *)p + L1_CACHE_BYTES);
2276
+#endif
2277
+}
2278
+
2279
+static inline void net_prefetchw(void *p)
2280
+{
2281
+	prefetchw(p);
2282
+#if L1_CACHE_BYTES < 128
2283
+	prefetchw((u8 *)p + L1_CACHE_BYTES);
2284
+#endif
21192285 }
21202286 
21212287 void netdev_unbind_sb_channel(struct net_device *dev,
....@@ -2165,15 +2331,17 @@
21652331 	(dev)->qdisc_tx_busylock = &qdisc_tx_busylock_key;	\
21662332 	(dev)->qdisc_running_key = &qdisc_running_key;		\
21672333 	lockdep_set_class(&(dev)->addr_list_lock,		\
2168
-			  &dev_addr_list_lock_key); 		\
2334
+			  &dev_addr_list_lock_key);		\
21692335 	for (i = 0; i < (dev)->num_tx_queues; i++)		\
21702336 		lockdep_set_class(&(dev)->_tx[i]._xmit_lock,	\
21712337 				  &qdisc_xmit_lock_key);	\
21722338 }
21732339 
2174
-struct netdev_queue *netdev_pick_tx(struct net_device *dev,
2175
-				    struct sk_buff *skb,
2176
-				    struct net_device *sb_dev);
2340
+u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
2341
+		     struct net_device *sb_dev);
2342
+struct netdev_queue *netdev_core_pick_tx(struct net_device *dev,
2343
+					 struct sk_buff *skb,
2344
+					 struct net_device *sb_dev);
21772345 
21782346 /* returns the headroom that the master device needs to take in account
21792347  * when forwarding to this dev
....@@ -2193,6 +2361,29 @@
21932361 static inline void netdev_reset_rx_headroom(struct net_device *dev)
21942362 {
21952363 	netdev_set_rx_headroom(dev, -1);
2364
+}
2365
+
2366
+static inline void *netdev_get_ml_priv(struct net_device *dev,
2367
+				       enum netdev_ml_priv_type type)
2368
+{
2369
+	if (dev->ml_priv_type != type)
2370
+		return NULL;
2371
+
2372
+	return dev->ml_priv;
2373
+}
2374
+
2375
+static inline void netdev_set_ml_priv(struct net_device *dev,
2376
+				      void *ml_priv,
2377
+				      enum netdev_ml_priv_type type)
2378
+{
2379
+	WARN(dev->ml_priv_type && dev->ml_priv_type != type,
2380
+	     "Overwriting already set ml_priv_type (%u) with different ml_priv_type (%u)!\n",
2381
+	     dev->ml_priv_type, type);
2382
+	WARN(!dev->ml_priv_type && dev->ml_priv,
2383
+	     "Overwriting already set ml_priv and ml_priv_type is ML_PRIV_NONE!\n");
2384
+
2385
+	dev->ml_priv = ml_priv;
2386
+	dev->ml_priv_type = type;
21962387 }
21972388 
21982389 /*
....@@ -2271,12 +2462,26 @@
22712462 }
22722463 
22732464 /**
2465
+ *  __netif_napi_del - remove a NAPI context
2466
+ *  @napi: NAPI context
2467
+ *
2468
+ * Warning: caller must observe RCU grace period before freeing memory
2469
+ * containing @napi. Drivers might want to call this helper to combine
2470
+ * all the needed RCU grace periods into a single one.
2471
+ */
2472
+void __netif_napi_del(struct napi_struct *napi);
2473
+
2474
+/**
22742475  *  netif_napi_del - remove a NAPI context
22752476  *  @napi: NAPI context
22762477  *
22772478  *  netif_napi_del() removes a NAPI context from the network device NAPI list
22782479  */
2279
-void netif_napi_del(struct napi_struct *napi);
2480
+static inline void netif_napi_del(struct napi_struct *napi)
2481
+{
2482
+	__netif_napi_del(napi);
2483
+	synchronize_net();
2484
+}
22802485 
22812486 struct napi_gro_cb {
22822487 	/* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
....@@ -2335,7 +2540,8 @@
23352540 	/* Number of gro_receive callbacks this packet already went through */
23362541 	u8 recursion_counter:4;
23372542 
2338
-	/* 1 bit hole */
2543
+	/* GRO is done by frag_list pointer chaining. */
2544
+	u8	is_flist:1;
23392545 
23402546 	/* used to support CHECKSUM_COMPLETE for tunneling protocols */
23412547 	__wsum	csum;
....@@ -2382,6 +2588,7 @@
23822588 
23832589 struct packet_type {
23842590 	__be16			type;	/* This is really htons(ether_type). */
2591
+	bool			ignore_outgoing;
23852592 	struct net_device	*dev;	/* NULL is wildcarded here	     */
23862593 	int			(*func) (struct sk_buff *,
23872594 					 struct net_device *,
....@@ -2424,7 +2631,35 @@
24242631 	u64     tx_packets;
24252632 	u64     tx_bytes;
24262633 	struct u64_stats_sync   syncp;
2427
-};
2634
+} __aligned(4 * sizeof(u64));
2635
+
2636
+struct pcpu_lstats {
2637
+	u64_stats_t packets;
2638
+	u64_stats_t bytes;
2639
+	struct u64_stats_sync syncp;
2640
+} __aligned(2 * sizeof(u64));
2641
+
2642
+void dev_lstats_read(struct net_device *dev, u64 *packets, u64 *bytes);
2643
+
2644
+static inline void dev_sw_netstats_rx_add(struct net_device *dev, unsigned int len)
2645
+{
2646
+	struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);
2647
+
2648
+	u64_stats_update_begin(&tstats->syncp);
2649
+	tstats->rx_bytes += len;
2650
+	tstats->rx_packets++;
2651
+	u64_stats_update_end(&tstats->syncp);
2652
+}
2653
+
2654
+static inline void dev_lstats_add(struct net_device *dev, unsigned int len)
2655
+{
2656
+	struct pcpu_lstats *lstats = this_cpu_ptr(dev->lstats);
2657
+
2658
+	u64_stats_update_begin(&lstats->syncp);
2659
+	u64_stats_add(&lstats->bytes, len);
2660
+	u64_stats_inc(&lstats->packets);
2661
+	u64_stats_update_end(&lstats->syncp);
2662
+}
24282663 
24292664 #define __netdev_alloc_pcpu_stats(type, gfp)				\
24302665 ({									\
....@@ -2489,7 +2724,8 @@
24892724 	NETDEV_REGISTER,
24902725 	NETDEV_UNREGISTER,
24912726 	NETDEV_CHANGEMTU,	/* notify after mtu change happened */
2492
-	NETDEV_CHANGEADDR,
2727
+	NETDEV_CHANGEADDR,	/* notify after the address change */
2728
+	NETDEV_PRE_CHANGEADDR,	/* notify before the address change */
24932729 	NETDEV_GOING_DOWN,
24942730 	NETDEV_CHANGENAME,
24952731 	NETDEV_FEAT_CHANGE,
....@@ -2520,6 +2756,15 @@
25202756 
25212757 int register_netdevice_notifier(struct notifier_block *nb);
25222758 int unregister_netdevice_notifier(struct notifier_block *nb);
2759
+int register_netdevice_notifier_net(struct net *net, struct notifier_block *nb);
2760
+int unregister_netdevice_notifier_net(struct net *net,
2761
+				      struct notifier_block *nb);
2762
+int register_netdevice_notifier_dev_net(struct net_device *dev,
2763
+					struct notifier_block *nb,
2764
+					struct netdev_net_notifier *nn);
2765
+int unregister_netdevice_notifier_dev_net(struct net_device *dev,
2766
+					  struct notifier_block *nb,
2767
+					  struct netdev_net_notifier *nn);
25232768 
25242769 struct netdev_notifier_info {
25252770 	struct net_device	*dev;
....@@ -2549,6 +2794,11 @@
25492794 struct netdev_notifier_changelowerstate_info {
25502795 	struct netdev_notifier_info info; /* must be first */
25512796 	void *lower_state_info; /* is lower dev state */
2797
+};
2798
+
2799
+struct netdev_notifier_pre_changeaddr_info {
2800
+	struct netdev_notifier_info info; /* must be first */
2801
+	const unsigned char *dev_addr;
25522802 };
25532803 
25542804 static inline void netdev_notifier_info_init(struct netdev_notifier_info *info,
....@@ -2585,6 +2835,9 @@
25852835 		list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
25862836 #define for_each_netdev_continue(net, d)		\
25872837 		list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
2838
+#define for_each_netdev_continue_reverse(net, d)		\
2839
+		list_for_each_entry_continue_reverse(d, &(net)->dev_base_head, \
2840
+						     dev_list)
25882841 #define for_each_netdev_continue_rcu(net, d)		\
25892842 	list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list)
25902843 #define for_each_netdev_in_bond_rcu(bond, slave)	\
....@@ -2645,20 +2898,30 @@
26452898 struct net_device *dev_get_by_name_rcu(struct net *net, const char *name);
26462899 struct net_device *__dev_get_by_name(struct net *net, const char *name);
26472900 int dev_alloc_name(struct net_device *dev, const char *name);
2648
-int dev_open(struct net_device *dev);
2901
+int dev_open(struct net_device *dev, struct netlink_ext_ack *extack);
26492902 void dev_close(struct net_device *dev);
26502903 void dev_close_many(struct list_head *head, bool unlink);
26512904 void dev_disable_lro(struct net_device *dev);
26522905 int dev_loopback_xmit(struct net *net, struct sock *sk, struct sk_buff *newskb);
26532906 u16 dev_pick_tx_zero(struct net_device *dev, struct sk_buff *skb,
2654
-		     struct net_device *sb_dev,
2655
-		     select_queue_fallback_t fallback);
2907
+		     struct net_device *sb_dev);
26562908 u16 dev_pick_tx_cpu_id(struct net_device *dev, struct sk_buff *skb,
2657
-		       struct net_device *sb_dev,
2658
-		       select_queue_fallback_t fallback);
2909
+		       struct net_device *sb_dev);
2910
+
26592911 int dev_queue_xmit(struct sk_buff *skb);
26602912 int dev_queue_xmit_accel(struct sk_buff *skb, struct net_device *sb_dev);
2661
-int dev_direct_xmit(struct sk_buff *skb, u16 queue_id);
2913
+int __dev_direct_xmit(struct sk_buff *skb, u16 queue_id);
2914
+
2915
+static inline int dev_direct_xmit(struct sk_buff *skb, u16 queue_id)
2916
+{
2917
+	int ret;
2918
+
2919
+	ret = __dev_direct_xmit(skb, queue_id);
2920
+	if (!dev_xmit_complete(ret))
2921
+		kfree_skb(skb);
2922
+	return ret;
2923
+}
2924
+
26622925 int register_netdevice(struct net_device *dev);
26632926 void unregister_netdevice_queue(struct net_device *dev, struct list_head *head);
26642927 void unregister_netdevice_many(struct list_head *head);
....@@ -2670,9 +2933,11 @@
26702933 int netdev_refcnt_read(const struct net_device *dev);
26712934 void free_netdev(struct net_device *dev);
26722935 void netdev_freemem(struct net_device *dev);
2673
-void synchronize_net(void);
26742936 int init_dummy_netdev(struct net_device *dev);
26752937 
2938
+struct net_device *netdev_get_xmit_slave(struct net_device *dev,
2939
+					 struct sk_buff *skb,
2940
+					 bool all_slaves);
26762941 struct net_device *dev_get_by_index(struct net *net, int ifindex);
26772942 struct net_device *__dev_get_by_index(struct net *net, int ifindex);
26782943 struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
....@@ -2680,6 +2945,7 @@
26802945 int netdev_get_name(struct net *net, char *name, int ifindex);
26812946 int dev_restart(struct net_device *dev);
26822947 int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb);
2948
+int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb);
26832949 
26842950 static inline unsigned int skb_gro_offset(const struct sk_buff *skb)
26852951 {
....@@ -2816,16 +3082,16 @@
28163082 }
28173083 
28183084 static inline void __skb_gro_checksum_convert(struct sk_buff *skb,
2819
-					      __sum16 check, __wsum pseudo)
3085
+					      __wsum pseudo)
28203086 {
28213087 	NAPI_GRO_CB(skb)->csum = ~pseudo;
28223088 	NAPI_GRO_CB(skb)->csum_valid = 1;
28233089 }
28243090 
2825
-#define skb_gro_checksum_try_convert(skb, proto, check, compute_pseudo)	\
3091
+#define skb_gro_checksum_try_convert(skb, proto, compute_pseudo)	\
28263092 do {									\
28273093 	if (__skb_gro_checksum_convert_check(skb))			\
2828
-		__skb_gro_checksum_convert(skb, check,			\
3094
+		__skb_gro_checksum_convert(skb, 			\
28293095 					   compute_pseudo(skb, proto));	\
28303096 } while (0)
28313097 
....@@ -2948,6 +3214,15 @@
29483214 	return dev->header_ops->parse(skb, haddr);
29493215 }
29503216 
3217
+static inline __be16 dev_parse_header_protocol(const struct sk_buff *skb)
3218
+{
3219
+	const struct net_device *dev = skb->dev;
3220
+
3221
+	if (!dev->header_ops || !dev->header_ops->parse_protocol)
3222
+		return 0;
3223
+	return dev->header_ops->parse_protocol(skb);
3224
+}
3225
+
29513226 /* ll_header must have at least hard_header_len allocated */
29523227 static inline bool dev_validate_header(const struct net_device *dev,
29533228 				       char *ll_header, int len)
....@@ -2968,12 +3243,9 @@
29683243 	return false;
29693244 }
29703245 
2971
-typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr,
2972
-			   int len, int size);
2973
-int register_gifconf(unsigned int family, gifconf_func_t *gifconf);
2974
-static inline int unregister_gifconf(unsigned int family)
3246
+static inline bool dev_has_header(const struct net_device *dev)
29753247 {
2976
-	return register_gifconf(family, NULL);
3248
+	return dev->header_ops && dev->header_ops->create;
29773249 }
29783250 
29793251 #ifdef CONFIG_NET_FLOW_LIMIT
....@@ -2994,16 +3266,12 @@
29943266  */
29953267 struct softnet_data {
29963268 	struct list_head	poll_list;
2997
-	struct napi_struct	*current_napi;
29983269 	struct sk_buff_head	process_queue;
29993270 
30003271 	/* stats */
30013272 	unsigned int		processed;
30023273 	unsigned int		time_squeeze;
30033274 	unsigned int		received_rps;
3004
-	/* unused partner variable for ABI alignment */
3005
-	unsigned int            gro_coalesced;
3006
-
30073275 #ifdef CONFIG_RPS
30083276 	struct softnet_data	*rps_ipi_list;
30093277 #endif
....@@ -3243,6 +3511,26 @@
32433511 #endif
32443512 }
32453513 
3514
+/* Variant of netdev_tx_sent_queue() for drivers that are aware
3515
+ * that they should not test BQL status themselves.
3516
+ * We do want to change __QUEUE_STATE_STACK_XOFF only for the last
3517
+ * skb of a batch.
3518
+ * Returns true if the doorbell must be used to kick the NIC.
3519
+ */
3520
+static inline bool __netdev_tx_sent_queue(struct netdev_queue *dev_queue,
3521
+					  unsigned int bytes,
3522
+					  bool xmit_more)
3523
+{
3524
+	if (xmit_more) {
3525
+#ifdef CONFIG_BQL
3526
+		dql_queued(&dev_queue->dql, bytes);
3527
+#endif
3528
+		return netif_tx_queue_stopped(dev_queue);
3529
+	}
3530
+	netdev_tx_sent_queue(dev_queue, bytes);
3531
+	return true;
3532
+}
3533
+
32463534 /**
32473535  * 	netdev_sent_queue - report the number of bytes queued to hardware
32483536  * 	@dev: network device
....@@ -3255,6 +3543,14 @@
32553543 static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes)
32563544 {
32573545 	netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes);
3546
+}
3547
+
3548
+static inline bool __netdev_sent_queue(struct net_device *dev,
3549
+				       unsigned int bytes,
3550
+				       bool xmit_more)
3551
+{
3552
+	return __netdev_tx_sent_queue(netdev_get_tx_queue(dev, 0), bytes,
3553
+				      xmit_more);
32583554 }
32593555 
32603556 static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue,
....@@ -3273,7 +3569,7 @@
32733569 	 */
32743570 	smp_mb();
32753571 
3276
-	if (dql_avail(&dev_queue->dql) < 0)
3572
+	if (unlikely(dql_avail(&dev_queue->dql) < 0))
32773573 		return;
32783574 
32793575 	if (test_and_clear_bit(__QUEUE_STATE_STACK_XOFF, &dev_queue->state))
....@@ -3481,7 +3777,7 @@
34813777 }
34823778 
34833779 /**
3484
- *	netif_attrmask_next_and - get the next CPU/Rx queue in *src1p & *src2p
3780
+ *	netif_attrmask_next_and - get the next CPU/Rx queue in \*src1p & \*src2p
34853781  *	@n: CPU/Rx queue index
34863782  *	@src1p: the first CPUs/Rx queues mask pointer
34873783  *	@src2p: the second CPUs/Rx queues mask pointer
....@@ -3618,6 +3914,7 @@
36183914 int do_xdp_generic(struct bpf_prog *xdp_prog, struct sk_buff *skb);
36193915 int netif_rx(struct sk_buff *skb);
36203916 int netif_rx_ni(struct sk_buff *skb);
3917
+int netif_rx_any_context(struct sk_buff *skb);
36213918 int netif_receive_skb(struct sk_buff *skb);
36223919 int netif_receive_skb_core(struct sk_buff *skb);
36233920 void netif_receive_skb_list(struct list_head *head);
....@@ -3627,7 +3924,6 @@
36273924 gro_result_t napi_gro_frags(struct napi_struct *napi);
36283925 struct packet_offload *gro_find_receive_by_type(__be16 type);
36293926 struct packet_offload *gro_find_complete_by_type(__be16 type);
3630
-extern struct napi_struct *get_current_napi_context(void);
36313927 
36323928 static inline void napi_free_frags(struct napi_struct *napi)
36333929 {
....@@ -3651,8 +3947,10 @@
36513947 int dev_ifconf(struct net *net, struct ifconf *, int);
36523948 int dev_ethtool(struct net *net, struct ifreq *);
36533949 unsigned int dev_get_flags(const struct net_device *);
3654
-int __dev_change_flags(struct net_device *, unsigned int flags);
3655
-int dev_change_flags(struct net_device *, unsigned int);
3950
+int __dev_change_flags(struct net_device *dev, unsigned int flags,
3951
+		       struct netlink_ext_ack *extack);
3952
+int dev_change_flags(struct net_device *dev, unsigned int flags,
3953
+		     struct netlink_ext_ack *extack);
36563954 void __dev_notify_flags(struct net_device *, unsigned int old_flags,
36573955 			unsigned int gchanges);
36583956 int dev_change_name(struct net_device *, const char *);
....@@ -3667,22 +3965,35 @@
36673965 int dev_set_mtu(struct net_device *, int);
36683966 int dev_change_tx_queue_len(struct net_device *, unsigned long);
36693967 void dev_set_group(struct net_device *, int);
3670
-int dev_set_mac_address(struct net_device *, struct sockaddr *);
3968
+int dev_pre_changeaddr_notify(struct net_device *dev, const char *addr,
3969
+			      struct netlink_ext_ack *extack);
3970
+int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa,
3971
+			struct netlink_ext_ack *extack);
3972
+int dev_set_mac_address_user(struct net_device *dev, struct sockaddr *sa,
3973
+			     struct netlink_ext_ack *extack);
3974
+int dev_get_mac_address(struct sockaddr *sa, struct net *net, char *dev_name);
36713975 int dev_change_carrier(struct net_device *, bool new_carrier);
36723976 int dev_get_phys_port_id(struct net_device *dev,
36733977 			 struct netdev_phys_item_id *ppid);
36743978 int dev_get_phys_port_name(struct net_device *dev,
36753979 			   char *name, size_t len);
3980
+int dev_get_port_parent_id(struct net_device *dev,
3981
+			   struct netdev_phys_item_id *ppid, bool recurse);
3982
+bool netdev_port_same_parent_id(struct net_device *a, struct net_device *b);
36763983 int dev_change_proto_down(struct net_device *dev, bool proto_down);
3984
+int dev_change_proto_down_generic(struct net_device *dev, bool proto_down);
3985
+void dev_change_proto_down_reason(struct net_device *dev, unsigned long mask,
3986
+				  u32 value);
36773987 struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again);
36783988 struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
36793989 				    struct netdev_queue *txq, int *ret);
36803990 
36813991 typedef int (*bpf_op_t)(struct net_device *dev, struct netdev_bpf *bpf);
36823992 int dev_change_xdp_fd(struct net_device *dev, struct netlink_ext_ack *extack,
3683
-		      int fd, u32 flags);
3684
-u32 __dev_xdp_query(struct net_device *dev, bpf_op_t xdp_op,
3685
-		    enum bpf_netdev_command cmd);
3993
+		      int fd, int expected_fd, u32 flags);
3994
+int bpf_xdp_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
3995
+u32 dev_xdp_prog_id(struct net_device *dev, enum bpf_xdp_mode mode);
3996
+
36863997 int xdp_umem_query(struct net_device *dev, u16 queue_id);
36873998 
36883999 int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb);
....@@ -3705,6 +4016,7 @@
37054016 	return 0;
37064017 }
37074018 
4019
+bool dev_nit_active(struct net_device *dev);
37084020 void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev);
37094021 
37104022 extern int		netdev_budget;
....@@ -3721,7 +4033,8 @@
37214033  */
37224034 static inline void dev_put(struct net_device *dev)
37234035 {
3724
-	this_cpu_dec(*dev->pcpu_refcnt);
4036
+	if (dev)
4037
+		this_cpu_dec(*dev->pcpu_refcnt);
37254038 }
37264039 
37274040 /**
....@@ -3732,7 +4045,8 @@
37324045  */
37334046 static inline void dev_hold(struct net_device *dev)
37344047 {
3735
-	this_cpu_inc(*dev->pcpu_refcnt);
4048
+	if (dev)
4049
+		this_cpu_inc(*dev->pcpu_refcnt);
37364050 }
37374051 
37384052 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
....@@ -3810,6 +4124,46 @@
38104124 
38114125 
38124126 /**
4127
+ *	netif_testing_on - mark device as under test.
4128
+ *	@dev: network device
4129
+ *
4130
+ * Mark device as under test (as per RFC2863).
4131
+ *
4132
+ * The testing state indicates that some test(s) must be performed on
4133
+ * the interface. After completion, of the test, the interface state
4134
+ * will change to up, dormant, or down, as appropriate.
4135
+ */
4136
+static inline void netif_testing_on(struct net_device *dev)
4137
+{
4138
+	if (!test_and_set_bit(__LINK_STATE_TESTING, &dev->state))
4139
+		linkwatch_fire_event(dev);
4140
+}
4141
+
4142
+/**
4143
+ *	netif_testing_off - set device as not under test.
4144
+ *	@dev: network device
4145
+ *
4146
+ * Device is not in testing state.
4147
+ */
4148
+static inline void netif_testing_off(struct net_device *dev)
4149
+{
4150
+	if (test_and_clear_bit(__LINK_STATE_TESTING, &dev->state))
4151
+		linkwatch_fire_event(dev);
4152
+}
4153
+
4154
+/**
4155
+ *	netif_testing - test if device is under test
4156
+ *	@dev: network device
4157
+ *
4158
+ * Check if device is under test
4159
+ */
4160
+static inline bool netif_testing(const struct net_device *dev)
4161
+{
4162
+	return test_bit(__LINK_STATE_TESTING, &dev->state);
4163
+}
4164
+
4165
+
4166
+/**
38134167  *	netif_oper_up - test if device is operational
38144168  *	@dev: network device
38154169  *
....@@ -3841,22 +4195,48 @@
38414195  */
38424196 
38434197 enum {
3844
-	NETIF_MSG_DRV		= 0x0001,
3845
-	NETIF_MSG_PROBE		= 0x0002,
3846
-	NETIF_MSG_LINK		= 0x0004,
3847
-	NETIF_MSG_TIMER		= 0x0008,
3848
-	NETIF_MSG_IFDOWN	= 0x0010,
3849
-	NETIF_MSG_IFUP		= 0x0020,
3850
-	NETIF_MSG_RX_ERR	= 0x0040,
3851
-	NETIF_MSG_TX_ERR	= 0x0080,
3852
-	NETIF_MSG_TX_QUEUED	= 0x0100,
3853
-	NETIF_MSG_INTR		= 0x0200,
3854
-	NETIF_MSG_TX_DONE	= 0x0400,
3855
-	NETIF_MSG_RX_STATUS	= 0x0800,
3856
-	NETIF_MSG_PKTDATA	= 0x1000,
3857
-	NETIF_MSG_HW		= 0x2000,
3858
-	NETIF_MSG_WOL		= 0x4000,
4198
+	NETIF_MSG_DRV_BIT,
4199
+	NETIF_MSG_PROBE_BIT,
4200
+	NETIF_MSG_LINK_BIT,
4201
+	NETIF_MSG_TIMER_BIT,
4202
+	NETIF_MSG_IFDOWN_BIT,
4203
+	NETIF_MSG_IFUP_BIT,
4204
+	NETIF_MSG_RX_ERR_BIT,
4205
+	NETIF_MSG_TX_ERR_BIT,
4206
+	NETIF_MSG_TX_QUEUED_BIT,
4207
+	NETIF_MSG_INTR_BIT,
4208
+	NETIF_MSG_TX_DONE_BIT,
4209
+	NETIF_MSG_RX_STATUS_BIT,
4210
+	NETIF_MSG_PKTDATA_BIT,
4211
+	NETIF_MSG_HW_BIT,
4212
+	NETIF_MSG_WOL_BIT,
4213
+
4214
+	/* When you add a new bit above, update netif_msg_class_names array
4215
+	 * in net/ethtool/common.c
4216
+	 */
4217
+	NETIF_MSG_CLASS_COUNT,
38594218 };
4219
+/* Both ethtool_ops interface and internal driver implementation use u32 */
4220
+static_assert(NETIF_MSG_CLASS_COUNT <= 32);
4221
+
4222
+#define __NETIF_MSG_BIT(bit)	((u32)1 << (bit))
4223
+#define __NETIF_MSG(name)	__NETIF_MSG_BIT(NETIF_MSG_ ## name ## _BIT)
4224
+
4225
+#define NETIF_MSG_DRV		__NETIF_MSG(DRV)
4226
+#define NETIF_MSG_PROBE		__NETIF_MSG(PROBE)
4227
+#define NETIF_MSG_LINK		__NETIF_MSG(LINK)
4228
+#define NETIF_MSG_TIMER		__NETIF_MSG(TIMER)
4229
+#define NETIF_MSG_IFDOWN	__NETIF_MSG(IFDOWN)
4230
+#define NETIF_MSG_IFUP		__NETIF_MSG(IFUP)
4231
+#define NETIF_MSG_RX_ERR	__NETIF_MSG(RX_ERR)
4232
+#define NETIF_MSG_TX_ERR	__NETIF_MSG(TX_ERR)
4233
+#define NETIF_MSG_TX_QUEUED	__NETIF_MSG(TX_QUEUED)
4234
+#define NETIF_MSG_INTR		__NETIF_MSG(INTR)
4235
+#define NETIF_MSG_TX_DONE	__NETIF_MSG(TX_DONE)
4236
+#define NETIF_MSG_RX_STATUS	__NETIF_MSG(RX_STATUS)
4237
+#define NETIF_MSG_PKTDATA	__NETIF_MSG(PKTDATA)
4238
+#define NETIF_MSG_HW		__NETIF_MSG(HW)
4239
+#define NETIF_MSG_WOL		__NETIF_MSG(WOL)
38604240 
38614241 #define netif_msg_drv(p)	((p)->msg_enable & NETIF_MSG_DRV)
38624242 #define netif_msg_probe(p)	((p)->msg_enable & NETIF_MSG_PROBE)
....@@ -4049,22 +4429,23 @@
40494429 
40504430 static inline void netif_addr_lock(struct net_device *dev)
40514431 {
4052
-	spin_lock(&dev->addr_list_lock);
4053
-}
4432
+	unsigned char nest_level = 0;
40544433 
4055
-static inline void netif_addr_lock_nested(struct net_device *dev)
4056
-{
4057
-	int subclass = SINGLE_DEPTH_NESTING;
4058
-
4059
-	if (dev->netdev_ops->ndo_get_lock_subclass)
4060
-		subclass = dev->netdev_ops->ndo_get_lock_subclass(dev);
4061
-
4062
-	spin_lock_nested(&dev->addr_list_lock, subclass);
4434
+#ifdef CONFIG_LOCKDEP
4435
+	nest_level = dev->nested_level;
4436
+#endif
4437
+	spin_lock_nested(&dev->addr_list_lock, nest_level);
40634438 }
40644439 
40654440 static inline void netif_addr_lock_bh(struct net_device *dev)
40664441 {
4067
-	spin_lock_bh(&dev->addr_list_lock);
4442
+	unsigned char nest_level = 0;
4443
+
4444
+#ifdef CONFIG_LOCKDEP
4445
+	nest_level = dev->nested_level;
4446
+#endif
4447
+	local_bh_disable();
4448
+	spin_lock_nested(&dev->addr_list_lock, nest_level);
40684449 }
40694450 
40704451 static inline void netif_addr_unlock(struct net_device *dev)
....@@ -4093,9 +4474,6 @@
40934474 				    unsigned char name_assign_type,
40944475 				    void (*setup)(struct net_device *),
40954476 				    unsigned int txqs, unsigned int rxqs);
4096
-int dev_get_valid_name(struct net *net, struct net_device *dev,
4097
-		       const char *name);
4098
-
40994477 #define alloc_netdev(sizeof_priv, name, name_assign_type, setup) \
41004478 	alloc_netdev_mqs(sizeof_priv, name, name_assign_type, setup, 1, 1)
41014479 
....@@ -4105,6 +4483,8 @@
41054483 
41064484 int register_netdev(struct net_device *dev);
41074485 void unregister_netdev(struct net_device *dev);
4486
+
4487
+int devm_register_netdev(struct device *dev, struct net_device *ndev);
41084488 
41094489 /* General hardware address lists handling functions */
41104490 int __hw_addr_sync(struct netdev_hw_addr_list *to_list,
....@@ -4116,6 +4496,16 @@
41164496 		       int (*sync)(struct net_device *, const unsigned char *),
41174497 		       int (*unsync)(struct net_device *,
41184498 				     const unsigned char *));
4499
+int __hw_addr_ref_sync_dev(struct netdev_hw_addr_list *list,
4500
+			   struct net_device *dev,
4501
+			   int (*sync)(struct net_device *,
4502
+				       const unsigned char *, int),
4503
+			   int (*unsync)(struct net_device *,
4504
+					 const unsigned char *, int));
4505
+void __hw_addr_ref_unsync_dev(struct netdev_hw_addr_list *list,
4506
+			      struct net_device *dev,
4507
+			      int (*unsync)(struct net_device *,
4508
+					    const unsigned char *, int));
41194509 void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list,
41204510 			  struct net_device *dev,
41214511 			  int (*unsync)(struct net_device *,
....@@ -4230,6 +4620,8 @@
42304620 					struct rtnl_link_stats64 *storage);
42314621 void netdev_stats_to_stats64(struct rtnl_link_stats64 *stats64,
42324622 			     const struct net_device_stats *netdev_stats);
4623
+void dev_fetch_sw_netstats(struct rtnl_link_stats64 *s,
4624
+			   const struct pcpu_sw_netstats __percpu *netstats);
42334625 
42344626 extern int		netdev_max_backlog;
42354627 extern int		netdev_tstamp_prequeue;
....@@ -4238,12 +4630,39 @@
42384630 extern int		dev_weight_tx_bias;
42394631 extern int		dev_rx_weight;
42404632 extern int		dev_tx_weight;
4633
+extern int		gro_normal_batch;
4634
+
4635
+enum {
4636
+	NESTED_SYNC_IMM_BIT,
4637
+	NESTED_SYNC_TODO_BIT,
4638
+};
4639
+
4640
+#define __NESTED_SYNC_BIT(bit)	((u32)1 << (bit))
4641
+#define __NESTED_SYNC(name)	__NESTED_SYNC_BIT(NESTED_SYNC_ ## name ## _BIT)
4642
+
4643
+#define NESTED_SYNC_IMM		__NESTED_SYNC(IMM)
4644
+#define NESTED_SYNC_TODO	__NESTED_SYNC(TODO)
4645
+
4646
+struct netdev_nested_priv {
4647
+	unsigned char flags;
4648
+	void *data;
4649
+};
42414650 
42424651 bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev);
42434652 struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev,
42444653 						     struct list_head **iter);
42454654 struct net_device *netdev_all_upper_get_next_dev_rcu(struct net_device *dev,
42464655 						     struct list_head **iter);
4656
+
4657
+#ifdef CONFIG_LOCKDEP
4658
+static LIST_HEAD(net_unlink_list);
4659
+
4660
+static inline void net_unlink_todo(struct net_device *dev)
4661
+{
4662
+	if (list_empty(&dev->unlink_list))
4663
+		list_add_tail(&dev->unlink_list, &net_unlink_list);
4664
+}
4665
+#endif
42474666 
42484667 /* iterate through upper list, must be called under RCU read lock */
42494668 #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \
....@@ -4254,8 +4673,8 @@
42544673 
42554674 int netdev_walk_all_upper_dev_rcu(struct net_device *dev,
42564675 				  int (*fn)(struct net_device *upper_dev,
4257
-					    void *data),
4258
-				  void *data);
4676
+					    struct netdev_nested_priv *priv),
4677
+				  struct netdev_nested_priv *priv);
42594678 
42604679 bool netdev_has_upper_dev_all_rcu(struct net_device *dev,
42614680 				  struct net_device *upper_dev);
....@@ -4288,19 +4707,16 @@
42884707 	     ldev; \
42894708 	     ldev = netdev_lower_get_next(dev, &(iter)))
42904709 
4291
-struct net_device *netdev_all_lower_get_next(struct net_device *dev,
4710
+struct net_device *netdev_next_lower_dev_rcu(struct net_device *dev,
42924711 					     struct list_head **iter);
4293
-struct net_device *netdev_all_lower_get_next_rcu(struct net_device *dev,
4294
-						 struct list_head **iter);
4295
-
42964712 int netdev_walk_all_lower_dev(struct net_device *dev,
42974713 			      int (*fn)(struct net_device *lower_dev,
4298
-					void *data),
4299
-			      void *data);
4714
+					struct netdev_nested_priv *priv),
4715
+			      struct netdev_nested_priv *priv);
43004716 int netdev_walk_all_lower_dev_rcu(struct net_device *dev,
43014717 				  int (*fn)(struct net_device *lower_dev,
4302
-					    void *data),
4303
-				  void *data);
4718
+					    struct netdev_nested_priv *priv),
4719
+				  struct netdev_nested_priv *priv);
43044720 
43054721 void *netdev_adjacent_get_private(struct list_head *adj_list);
43064722 void *netdev_lower_get_first_private_rcu(struct net_device *dev);
....@@ -4314,6 +4730,16 @@
43144730 				 struct netlink_ext_ack *extack);
43154731 void netdev_upper_dev_unlink(struct net_device *dev,
43164732 			     struct net_device *upper_dev);
4733
+int netdev_adjacent_change_prepare(struct net_device *old_dev,
4734
+				   struct net_device *new_dev,
4735
+				   struct net_device *dev,
4736
+				   struct netlink_ext_ack *extack);
4737
+void netdev_adjacent_change_commit(struct net_device *old_dev,
4738
+				   struct net_device *new_dev,
4739
+				   struct net_device *dev);
4740
+void netdev_adjacent_change_abort(struct net_device *old_dev,
4741
+				  struct net_device *new_dev,
4742
+				  struct net_device *dev);
43174743 void netdev_adjacent_rename_links(struct net_device *dev, char *oldname);
43184744 void *netdev_lower_dev_get_private(struct net_device *dev,
43194745 				   struct net_device *lower_dev);
....@@ -4325,7 +4751,6 @@
43254751 extern u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
43264752 void netdev_rss_key_fill(void *buffer, size_t len);
43274753 
4328
-int dev_get_nest_level(struct net_device *dev);
43294754 int skb_checksum_help(struct sk_buff *skb);
43304755 int skb_crc32c_csum_help(struct sk_buff *skb);
43314756 int skb_csum_hwoffload_help(struct sk_buff *skb,
....@@ -4348,6 +4773,15 @@
43484773 
43494774 void netdev_bonding_info_change(struct net_device *dev,
43504775 				struct netdev_bonding_info *bonding_info);
4776
+
4777
+#if IS_ENABLED(CONFIG_ETHTOOL_NETLINK)
4778
+void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data);
4779
+#else
4780
+static inline void ethtool_notify(struct net_device *dev, unsigned int cmd,
4781
+				  const void *data)
4782
+{
4783
+}
4784
+#endif
43514785 
43524786 static inline
43534787 struct sk_buff *skb_gso_segment(struct sk_buff *skb, netdev_features_t features)
....@@ -4380,9 +4814,10 @@
43804814 }
43814815 
43824816 #ifdef CONFIG_BUG
4383
-void netdev_rx_csum_fault(struct net_device *dev);
4817
+void netdev_rx_csum_fault(struct net_device *dev, struct sk_buff *skb);
43844818 #else
4385
-static inline void netdev_rx_csum_fault(struct net_device *dev)
4819
+static inline void netdev_rx_csum_fault(struct net_device *dev,
4820
+					struct sk_buff *skb)
43864821 {
43874822 }
43884823 #endif
....@@ -4400,7 +4835,7 @@
44004835 					      struct sk_buff *skb, struct net_device *dev,
44014836 					      bool more)
44024837 {
4403
-	skb->xmit_more = more ? 1 : 0;
4838
+	__this_cpu_write(softnet_data.xmit.more, more);
44044839 	return ops->ndo_start_xmit(skb, dev);
44054840 }
44064841 
....@@ -4413,7 +4848,7 @@
44134848 					    struct netdev_queue *txq, bool more)
44144849 {
44154850 	const struct net_device_ops *ops = dev->netdev_ops;
4416
-	int rc;
4851
+	netdev_tx_t rc;
44174852 
44184853 	rc = __netdev_start_xmit(ops, skb, dev, more);
44194854 	if (rc == NETDEV_TX_OK)
....@@ -4426,16 +4861,6 @@
44264861 				const void *ns);
44274862 void netdev_class_remove_file_ns(const struct class_attribute *class_attr,
44284863 				 const void *ns);
4429
-
4430
-static inline int netdev_class_create_file(const struct class_attribute *class_attr)
4431
-{
4432
-	return netdev_class_create_file_ns(class_attr, NULL);
4433
-}
4434
-
4435
-static inline void netdev_class_remove_file(const struct class_attribute *class_attr)
4436
-{
4437
-	netdev_class_remove_file_ns(class_attr, NULL);
4438
-}
44394864 
44404865 extern const struct kobj_ns_type_operations net_ns_type_operations;
44414866 
....@@ -4509,6 +4934,7 @@
45094934 	BUILD_BUG_ON(SKB_GSO_ESP != (NETIF_F_GSO_ESP >> NETIF_F_GSO_SHIFT));
45104935 	BUILD_BUG_ON(SKB_GSO_UDP != (NETIF_F_GSO_UDP >> NETIF_F_GSO_SHIFT));
45114936 	BUILD_BUG_ON(SKB_GSO_UDP_L4 != (NETIF_F_GSO_UDP_L4 >> NETIF_F_GSO_SHIFT));
4937
+	BUILD_BUG_ON(SKB_GSO_FRAGLIST != (NETIF_F_GSO_FRAGLIST >> NETIF_F_GSO_SHIFT));
45124938 
45134939 	return (features & feature) == feature;
45144940 }
....@@ -4611,6 +5037,11 @@
46115037 	return dev->priv_flags & IFF_OVS_DATAPATH;
46125038 }
46135039 
5040
+static inline bool netif_is_any_bridge_port(const struct net_device *dev)
5041
+{
5042
+	return netif_is_bridge_port(dev) || netif_is_ovs_port(dev);
5043
+}
5044
+
46145045 static inline bool netif_is_team_master(const struct net_device *dev)
46155046 {
46165047 	return dev->priv_flags & IFF_TEAM;
....@@ -4692,22 +5123,22 @@
46925123 	return " (unknown)";
46935124 }
46945125 
4695
-__printf(3, 4)
5126
+__printf(3, 4) __cold
46965127 void netdev_printk(const char *level, const struct net_device *dev,
46975128 		   const char *format, ...);
4698
-__printf(2, 3)
5129
+__printf(2, 3) __cold
46995130 void netdev_emerg(const struct net_device *dev, const char *format, ...);
4700
-__printf(2, 3)
5131
+__printf(2, 3) __cold
47015132 void netdev_alert(const struct net_device *dev, const char *format, ...);
4702
-__printf(2, 3)
5133
+__printf(2, 3) __cold
47035134 void netdev_crit(const struct net_device *dev, const char *format, ...);
4704
-__printf(2, 3)
5135
+__printf(2, 3) __cold
47055136 void netdev_err(const struct net_device *dev, const char *format, ...);
4706
-__printf(2, 3)
5137
+__printf(2, 3) __cold
47075138 void netdev_warn(const struct net_device *dev, const char *format, ...);
4708
-__printf(2, 3)
5139
+__printf(2, 3) __cold
47095140 void netdev_notice(const struct net_device *dev, const char *format, ...);
4710
-__printf(2, 3)
5141
+__printf(2, 3) __cold
47115142 void netdev_info(const struct net_device *dev, const char *format, ...);
47125143 
47135144 #define netdev_level_once(level, dev, fmt, ...)			\
....@@ -4738,7 +5169,8 @@
47385169 #define MODULE_ALIAS_NETDEV(device) \
47395170 	MODULE_ALIAS("netdev-" device)
47405171 
4741
-#if defined(CONFIG_DYNAMIC_DEBUG)
5172
+#if defined(CONFIG_DYNAMIC_DEBUG) || \
5173
+	(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
47425174 #define netdev_dbg(__dev, format, args...)			\
47435175 do {								\
47445176 	dynamic_netdev_dbg(__dev, format, ##args);		\
....@@ -4808,7 +5240,8 @@
48085240 #define netif_info(priv, type, dev, fmt, args...)		\
48095241 	netif_level(info, priv, type, dev, fmt, ##args)
48105242 
4811
-#if defined(CONFIG_DYNAMIC_DEBUG)
5243
+#if defined(CONFIG_DYNAMIC_DEBUG) || \
5244
+	(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
48125245 #define netif_dbg(priv, type, netdev, format, args...)		\
48135246 do {								\
48145247 	if (netif_msg_##type(priv))				\
....@@ -4868,4 +5301,6 @@
48685301 #define PTYPE_HASH_SIZE	(16)
48695302 #define PTYPE_HASH_MASK	(PTYPE_HASH_SIZE - 1)
48705303 
5304
+extern struct net_device *blackhole_netdev;
5305
+
48715306 #endif	/* _LINUX_NETDEVICE_H */