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

Pull networking updates from David Miller:

 1) Add WireGuard

 2) Add HE and TWT support to ath11k driver, from John Crispin.

 3) Add ESP in TCP encapsulation support, from Sabrina Dubroca.

 4) Add variable window congestion control to TIPC, from Jon Maloy.

 5) Add BCM84881 PHY driver, from Russell King.

 6) Start adding netlink support for ethtool operations, from Michal
    Kubecek.

 7) Add XDP drop and TX action support to ena driver, from Sameeh
    Jubran.

 8) Add new ipv4 route notifications so that mlxsw driver does not have
    to handle identical routes itself. From Ido Schimmel.

 9) Add BPF dynamic program extensions, from Alexei Starovoitov.

10) Support RX and TX timestamping in igc, from Vinicius Costa Gomes.

11) Add support for macsec HW offloading, from Antoine Tenart.

12) Add initial support for MPTCP protocol, from Christoph Paasch,
    Matthieu Baerts, Florian Westphal, Peter Krystad, and many others.

13) Add Octeontx2 PF support, from Sunil Goutham, Geetha sowjanya, Linu
    Cherian, and others.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1469 commits)
  net: phy: add default ARCH_BCM_IPROC for MDIO_BCM_IPROC
  udp: segment looped gso packets correctly
  netem: change mailing list
  qed: FW 8.42.2.0 debug features
  qed: rt init valid initialization changed
  qed: Debug feature: ilt and mdump
  qed: FW 8.42.2.0 Add fw overlay feature
  qed: FW 8.42.2.0 HSI changes
  qed: FW 8.42.2.0 iscsi/fcoe changes
  qed: Add abstraction for different hsi values per chip
  qed: FW 8.42.2.0 Additional ll2 type
  qed: Use dmae to write to widebus registers in fw_funcs
  qed: FW 8.42.2.0 Parser offsets modified
  qed: FW 8.42.2.0 Queue Manager changes
  qed: FW 8.42.2.0 Expose new registers and change windows
  qed: FW 8.42.2.0 Internal ram offsets modifications
  MAINTAINERS: Add entry for Marvell OcteonTX2 Physical Function driver
  Documentation: net: octeontx2: Add RVU HW and drivers overview
  octeontx2-pf: ethtool RSS config support
  octeontx2-pf: Add basic ethtool support
  ...

1 files changed, 137 insertions, 0 deletions

diff --git a/drivers/net/wireguard/noise.h b/drivers/net/wireguard/noise.h
new file mode 100644
index 000000000000..138a07bb817c
--- /dev/null
+++ b/drivers/net/wireguard/noise.h
@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+#ifndef _WG_NOISE_H
+#define _WG_NOISE_H
+
+#include "messages.h"
+#include "peerlookup.h"
+
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/atomic.h>
+#include <linux/rwsem.h>
+#include <linux/mutex.h>
+#include <linux/kref.h>
+
+union noise_counter {
+	struct {
+		u64 counter;
+		unsigned long backtrack[COUNTER_BITS_TOTAL / BITS_PER_LONG];
+		spinlock_t lock;
+	} receive;
+	atomic64_t counter;
+};
+
+struct noise_symmetric_key {
+	u8 key[NOISE_SYMMETRIC_KEY_LEN];
+	union noise_counter counter;
+	u64 birthdate;
+	bool is_valid;
+};
+
+struct noise_keypair {
+	struct index_hashtable_entry entry;
+	struct noise_symmetric_key sending;
+	struct noise_symmetric_key receiving;
+	__le32 remote_index;
+	bool i_am_the_initiator;
+	struct kref refcount;
+	struct rcu_head rcu;
+	u64 internal_id;
+};
+
+struct noise_keypairs {
+	struct noise_keypair __rcu *current_keypair;
+	struct noise_keypair __rcu *previous_keypair;
+	struct noise_keypair __rcu *next_keypair;
+	spinlock_t keypair_update_lock;
+};
+
+struct noise_static_identity {
+	u8 static_public[NOISE_PUBLIC_KEY_LEN];
+	u8 static_private[NOISE_PUBLIC_KEY_LEN];
+	struct rw_semaphore lock;
+	bool has_identity;
+};
+
+enum noise_handshake_state {
+	HANDSHAKE_ZEROED,
+	HANDSHAKE_CREATED_INITIATION,
+	HANDSHAKE_CONSUMED_INITIATION,
+	HANDSHAKE_CREATED_RESPONSE,
+	HANDSHAKE_CONSUMED_RESPONSE
+};
+
+struct noise_handshake {
+	struct index_hashtable_entry entry;
+
+	enum noise_handshake_state state;
+	u64 last_initiation_consumption;
+
+	struct noise_static_identity *static_identity;
+
+	u8 ephemeral_private[NOISE_PUBLIC_KEY_LEN];
+	u8 remote_static[NOISE_PUBLIC_KEY_LEN];
+	u8 remote_ephemeral[NOISE_PUBLIC_KEY_LEN];
+	u8 precomputed_static_static[NOISE_PUBLIC_KEY_LEN];
+
+	u8 preshared_key[NOISE_SYMMETRIC_KEY_LEN];
+
+	u8 hash[NOISE_HASH_LEN];
+	u8 chaining_key[NOISE_HASH_LEN];
+
+	u8 latest_timestamp[NOISE_TIMESTAMP_LEN];
+	__le32 remote_index;
+
+	/* Protects all members except the immutable (after noise_handshake_
+	 * init): remote_static, precomputed_static_static, static_identity.
+	 */
+	struct rw_semaphore lock;
+};
+
+struct wg_device;
+
+void wg_noise_init(void);
+bool wg_noise_handshake_init(struct noise_handshake *handshake,
+			   struct noise_static_identity *static_identity,
+			   const u8 peer_public_key[NOISE_PUBLIC_KEY_LEN],
+			   const u8 peer_preshared_key[NOISE_SYMMETRIC_KEY_LEN],
+			   struct wg_peer *peer);
+void wg_noise_handshake_clear(struct noise_handshake *handshake);
+static inline void wg_noise_reset_last_sent_handshake(atomic64_t *handshake_ns)
+{
+	atomic64_set(handshake_ns, ktime_get_coarse_boottime_ns() -
+				       (u64)(REKEY_TIMEOUT + 1) * NSEC_PER_SEC);
+}
+
+void wg_noise_keypair_put(struct noise_keypair *keypair, bool unreference_now);
+struct noise_keypair *wg_noise_keypair_get(struct noise_keypair *keypair);
+void wg_noise_keypairs_clear(struct noise_keypairs *keypairs);
+bool wg_noise_received_with_keypair(struct noise_keypairs *keypairs,
+				    struct noise_keypair *received_keypair);
+void wg_noise_expire_current_peer_keypairs(struct wg_peer *peer);
+
+void wg_noise_set_static_identity_private_key(
+	struct noise_static_identity *static_identity,
+	const u8 private_key[NOISE_PUBLIC_KEY_LEN]);
+bool wg_noise_precompute_static_static(struct wg_peer *peer);
+
+bool
+wg_noise_handshake_create_initiation(struct message_handshake_initiation *dst,
+				     struct noise_handshake *handshake);
+struct wg_peer *
+wg_noise_handshake_consume_initiation(struct message_handshake_initiation *src,
+				      struct wg_device *wg);
+
+bool wg_noise_handshake_create_response(struct message_handshake_response *dst,
+					struct noise_handshake *handshake);
+struct wg_peer *
+wg_noise_handshake_consume_response(struct message_handshake_response *src,
+				    struct wg_device *wg);
+
+bool wg_noise_handshake_begin_session(struct noise_handshake *handshake,
+				      struct noise_keypairs *keypairs);
+
+#endif /* _WG_NOISE_H */