19 files changed, 456 insertions, 315 deletions

diff --git a/include/net/caif/caif_shm.h b/include/net/caif/caif_shm.h
deleted file mode 100644
index 5bcce55438cf..000000000000
--- a/include/net/caif/caif_shm.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * Copyright (C) ST-Ericsson AB 2010
- * Contact: Sjur Brendeland / sjur.brandeland@stericsson.com
- * Author: Amarnath Revanna / amarnath.bangalore.revanna@stericsson.com
- * License terms: GNU General Public License (GPL) version 2
- */
-
-#ifndef CAIF_SHM_H_
-#define CAIF_SHM_H_
-
-struct shmdev_layer {
-        u32 shm_base_addr;
-        u32 shm_total_sz;
-        u32 shm_id;
-        u32 shm_loopback;
-        void *hmbx;
-        int (*pshmdev_mbxsend) (u32 shm_id, u32 mbx_msg);
-        int (*pshmdev_mbxsetup) (void *pshmdrv_cb,
-                                struct shmdev_layer *pshm_dev, void *pshm_drv);
-        struct net_device *pshm_netdev;
-};
-
-extern int caif_shmcore_probe(struct shmdev_layer *pshm_dev);
-extern void caif_shmcore_remove(struct net_device *pshm_netdev);
-
-#endif
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index d581c6de5d64..bdba9b619064 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -611,22 +611,10 @@ struct cfg80211_ap_settings {
 };
 
 /**
- * enum plink_action - actions to perform in mesh peers
- *
- * @PLINK_ACTION_INVALID: action 0 is reserved
- * @PLINK_ACTION_OPEN: start mesh peer link establishment
- * @PLINK_ACTION_BLOCK: block traffic from this mesh peer
- */
-enum plink_actions {
-        PLINK_ACTION_INVALID,
-        PLINK_ACTION_OPEN,
-        PLINK_ACTION_BLOCK,
-};
-
-/**
  * enum station_parameters_apply_mask - station parameter values to apply
  * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp)
  * @STATION_PARAM_APPLY_CAPABILITY: apply new capability
+ * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state
  *
  * Not all station parameters have in-band "no change" signalling,
  * for those that don't these flags will are used.
@@ -634,6 +622,7 @@ enum plink_actions {
 enum station_parameters_apply_mask {
         STATION_PARAM_APPLY_UAPSD = BIT(0),
         STATION_PARAM_APPLY_CAPABILITY = BIT(1),
+        STATION_PARAM_APPLY_PLINK_STATE = BIT(2),
 };
 
 /**
@@ -669,7 +658,7 @@ enum station_parameters_apply_mask {
  * @ext_capab_len: number of extended capabilities
  */
 struct station_parameters {
-        u8 *supported_rates;
+        const u8 *supported_rates;
         struct net_device *vlan;
         u32 sta_flags_mask, sta_flags_set;
         u32 sta_modify_mask;
@@ -678,17 +667,60 @@ struct station_parameters {
         u8 supported_rates_len;
         u8 plink_action;
         u8 plink_state;
-        struct ieee80211_ht_cap *ht_capa;
-        struct ieee80211_vht_cap *vht_capa;
+        const struct ieee80211_ht_cap *ht_capa;
+        const struct ieee80211_vht_cap *vht_capa;
         u8 uapsd_queues;
         u8 max_sp;
         enum nl80211_mesh_power_mode local_pm;
         u16 capability;
-        u8 *ext_capab;
+        const u8 *ext_capab;
         u8 ext_capab_len;
 };
 
 /**
+ * enum cfg80211_station_type - the type of station being modified
+ * @CFG80211_STA_AP_CLIENT: client of an AP interface
+ * @CFG80211_STA_AP_MLME_CLIENT: client of an AP interface that has
+ *      the AP MLME in the device
+ * @CFG80211_STA_AP_STA: AP station on managed interface
+ * @CFG80211_STA_IBSS: IBSS station
+ * @CFG80211_STA_TDLS_PEER_SETUP: TDLS peer on managed interface (dummy entry
+ *      while TDLS setup is in progress, it moves out of this state when
+ *      being marked authorized; use this only if TDLS with external setup is
+ *      supported/used)
+ * @CFG80211_STA_TDLS_PEER_ACTIVE: TDLS peer on managed interface (active
+ *      entry that is operating, has been marked authorized by userspace)
+ * @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed)
+ * @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed)
+ */
+enum cfg80211_station_type {
+        CFG80211_STA_AP_CLIENT,
+        CFG80211_STA_AP_MLME_CLIENT,
+        CFG80211_STA_AP_STA,
+        CFG80211_STA_IBSS,
+        CFG80211_STA_TDLS_PEER_SETUP,
+        CFG80211_STA_TDLS_PEER_ACTIVE,
+        CFG80211_STA_MESH_PEER_KERNEL,
+        CFG80211_STA_MESH_PEER_USER,
+};
+
+/**
+ * cfg80211_check_station_change - validate parameter changes
+ * @wiphy: the wiphy this operates on
+ * @params: the new parameters for a station
+ * @statype: the type of station being modified
+ *
+ * Utility function for the @change_station driver method. Call this function
+ * with the appropriate station type looking up the station (and checking that
+ * it exists). It will verify whether the station change is acceptable, and if
+ * not will return an error code. Note that it may modify the parameters for
+ * backward compatibility reasons, so don't use them before calling this.
+ */
+int cfg80211_check_station_change(struct wiphy *wiphy,
+                                  struct station_parameters *params,
+                                  enum cfg80211_station_type statype);
+
+/**
  * enum station_info_flags - station information flags
  *
  * Used by the driver to indicate which info in &struct station_info
@@ -1119,6 +1151,7 @@ struct mesh_config {
  * @ie_len: length of vendor information elements
  * @is_authenticated: this mesh requires authentication
  * @is_secure: this mesh uses security
+ * @user_mpm: userspace handles all MPM functions
  * @dtim_period: DTIM period to use
  * @beacon_interval: beacon interval to use
  * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
@@ -1136,6 +1169,7 @@ struct mesh_setup {
         u8 ie_len;
         bool is_authenticated;
         bool is_secure;
+        bool user_mpm;
         u8 dtim_period;
         u16 beacon_interval;
         int mcast_rate[IEEE80211_NUM_BANDS];
@@ -1398,9 +1432,11 @@ struct cfg80211_auth_request {
  * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association.
  *
  * @ASSOC_REQ_DISABLE_HT:  Disable HT (802.11n)
+ * @ASSOC_REQ_DISABLE_VHT:  Disable VHT
  */
 enum cfg80211_assoc_req_flags {
         ASSOC_REQ_DISABLE_HT            = BIT(0),
+        ASSOC_REQ_DISABLE_VHT           = BIT(1),
 };
 
 /**
@@ -1422,6 +1458,8 @@ enum cfg80211_assoc_req_flags {
  * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
  *   will be used in ht_capa.  Un-supported values will be ignored.
  * @ht_capa_mask:  The bits of ht_capa which are to be used.
+ * @vht_capa: VHT capability override
+ * @vht_capa_mask: VHT capability mask indicating which fields to use
  */
 struct cfg80211_assoc_request {
         struct cfg80211_bss *bss;
@@ -1432,6 +1470,7 @@ struct cfg80211_assoc_request {
         u32 flags;
         struct ieee80211_ht_cap ht_capa;
         struct ieee80211_ht_cap ht_capa_mask;
+        struct ieee80211_vht_cap vht_capa, vht_capa_mask;
 };
 
 /**
@@ -1542,6 +1581,8 @@ struct cfg80211_ibss_params {
  * @ht_capa:  HT Capabilities over-rides.  Values set in ht_capa_mask
  *   will be used in ht_capa.  Un-supported values will be ignored.
  * @ht_capa_mask:  The bits of ht_capa which are to be used.
+ * @vht_capa:  VHT Capability overrides
+ * @vht_capa_mask: The bits of vht_capa which are to be used.
  */
 struct cfg80211_connect_params {
         struct ieee80211_channel *channel;
@@ -1560,6 +1601,8 @@ struct cfg80211_connect_params {
         int bg_scan_period;
         struct ieee80211_ht_cap ht_capa;
         struct ieee80211_ht_cap ht_capa_mask;
+        struct ieee80211_vht_cap vht_capa;
+        struct ieee80211_vht_cap vht_capa_mask;
 };
 
 /**
@@ -1722,6 +1765,21 @@ struct cfg80211_gtk_rekey_data {
 };
 
 /**
+ * struct cfg80211_update_ft_ies_params - FT IE Information
+ *
+ * This structure provides information needed to update the fast transition IE
+ *
+ * @md: The Mobility Domain ID, 2 Octet value
+ * @ie: Fast Transition IEs
+ * @ie_len: Length of ft_ie in octets
+ */
+struct cfg80211_update_ft_ies_params {
+        u16 md;
+        const u8 *ie;
+        size_t ie_len;
+};
+
+/**
  * struct cfg80211_ops - backend description for wireless configuration
  *
  * This struct is registered by fullmac card drivers and/or wireless stacks
@@ -1781,9 +1839,8 @@ struct cfg80211_gtk_rekey_data {
  * @change_station: Modify a given station. Note that flags changes are not much
  *      validated in cfg80211, in particular the auth/assoc/authorized flags
  *      might come to the driver in invalid combinations -- make sure to check
- *      them, also against the existing state! Also, supported_rates changes are
- *      not checked in station mode -- drivers need to reject (or ignore) them
- *      for anything but TDLS peers.
+ *      them, also against the existing state! Drivers must call
+ *      cfg80211_check_station_change() to validate the information.
  * @get_station: get station information for the station identified by @mac
  * @dump_station: dump station callback -- resume dump at index @idx
  *
@@ -2168,6 +2225,8 @@ struct cfg80211_ops {
         int     (*start_radar_detection)(struct wiphy *wiphy,
                                          struct net_device *dev,
                                          struct cfg80211_chan_def *chandef);
+        int     (*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev,
+                                 struct cfg80211_update_ft_ies_params *ftie);
 };
 
 /*
@@ -2485,6 +2544,8 @@ struct wiphy_wowlan_support {
  * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features.
  * @ht_capa_mod_mask:  Specify what ht_cap values can be over-ridden.
  *      If null, then none can be over-ridden.
+ * @vht_capa_mod_mask:  Specify what VHT capabilities can be over-ridden.
+ *      If null, then none can be over-ridden.
  *
  * @max_acl_mac_addrs: Maximum number of MAC addresses that the device
  *      supports for ACL.
@@ -2593,6 +2654,7 @@ struct wiphy {
         struct dentry *debugfsdir;
 
         const struct ieee80211_ht_cap *ht_capa_mod_mask;
+        const struct ieee80211_vht_cap *vht_capa_mod_mask;
 
 #ifdef CONFIG_NET_NS
         /* the network namespace this phy lives in currently */
@@ -4002,6 +4064,30 @@ u32 cfg80211_calculate_bitrate(struct rate_info *rate);
 void cfg80211_unregister_wdev(struct wireless_dev *wdev);
 
 /**
+ * struct cfg80211_ft_event - FT Information Elements
+ * @ies: FT IEs
+ * @ies_len: length of the FT IE in bytes
+ * @target_ap: target AP's MAC address
+ * @ric_ies: RIC IE
+ * @ric_ies_len: length of the RIC IE in bytes
+ */
+struct cfg80211_ft_event_params {
+        const u8 *ies;
+        size_t ies_len;
+        const u8 *target_ap;
+        const u8 *ric_ies;
+        size_t ric_ies_len;
+};
+
+/**
+ * cfg80211_ft_event - notify userspace about FT IE and RIC IE
+ * @netdev: network device
+ * @ft_event: IE information
+ */
+void cfg80211_ft_event(struct net_device *netdev,
+                       struct cfg80211_ft_event_params *ft_event);
+
+/**
  * cfg80211_get_p2p_attr - find and copy a P2P attribute from IE buffer
  * @ies: the input IE buffer
  * @len: the input length
diff --git a/include/net/dn_fib.h b/include/net/dn_fib.h
index 1ee9d4bda30d..74004af31c48 100644
--- a/include/net/dn_fib.h
+++ b/include/net/dn_fib.h
@@ -1,24 +1,9 @@
 #ifndef _NET_DN_FIB_H
 #define _NET_DN_FIB_H
 
-/* WARNING: The ordering of these elements must match ordering
- *          of RTA_* rtnetlink attribute numbers.
- */
-struct dn_kern_rta {
-        void            *rta_dst;
-        void            *rta_src;
-        int             *rta_iif;
-        int             *rta_oif;
-        void            *rta_gw;
-        u32             *rta_priority;
-        void            *rta_prefsrc;
-        struct rtattr   *rta_mx;
-        struct rtattr   *rta_mp;
-        unsigned char   *rta_protoinfo;
-        u32             *rta_flow;
-        struct rta_cacheinfo *rta_ci;
-        struct rta_session *rta_sess;
-};
+#include <linux/netlink.h>
+
+extern const struct nla_policy rtm_dn_policy[];
 
 struct dn_fib_res {
         struct fib_rule *r;
@@ -93,10 +78,10 @@ struct dn_fib_table {
         u32 n;
 
         int (*insert)(struct dn_fib_table *t, struct rtmsg *r, 
-                        struct dn_kern_rta *rta, struct nlmsghdr *n, 
+                        struct nlattr *attrs[], struct nlmsghdr *n,
                         struct netlink_skb_parms *req);
         int (*delete)(struct dn_fib_table *t, struct rtmsg *r,
-                        struct dn_kern_rta *rta, struct nlmsghdr *n,
+                        struct nlattr *attrs[], struct nlmsghdr *n,
                         struct netlink_skb_parms *req);
         int (*lookup)(struct dn_fib_table *t, const struct flowidn *fld,
                         struct dn_fib_res *res);
@@ -116,13 +101,12 @@ extern void dn_fib_cleanup(void);
 extern int dn_fib_ioctl(struct socket *sock, unsigned int cmd, 
                         unsigned long arg);
 extern struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r, 
-                                struct dn_kern_rta *rta, 
+                                struct nlattr *attrs[],
                                 const struct nlmsghdr *nlh, int *errp);
 extern int dn_fib_semantic_match(int type, struct dn_fib_info *fi, 
                         const struct flowidn *fld,
                         struct dn_fib_res *res);
 extern void dn_fib_release_info(struct dn_fib_info *fi);
-extern __le16 dn_fib_get_attr16(struct rtattr *attr, int attrlen, int type);
 extern void dn_fib_flush(void);
 extern void dn_fib_select_multipath(const struct flowidn *fld,
                                         struct dn_fib_res *res);
diff --git a/include/net/firewire.h b/include/net/firewire.h
new file mode 100644
index 000000000000..31bcbfe7a220
--- /dev/null
+++ b/include/net/firewire.h
@@ -0,0 +1,25 @@
+#ifndef _NET_FIREWIRE_H
+#define _NET_FIREWIRE_H
+
+/* Pseudo L2 address */
+#define FWNET_ALEN      16
+union fwnet_hwaddr {
+        u8 u[FWNET_ALEN];
+        /* "Hardware address" defined in RFC2734/RF3146 */
+        struct {
+                __be64 uniq_id;         /* EUI-64                       */
+                u8 max_rec;             /* max packet size              */
+                u8 sspd;                /* max speed                    */
+                __be16 fifo_hi;         /* hi 16bits of FIFO addr       */
+                __be32 fifo_lo;         /* lo 32bits of FIFO addr       */
+        } __packed uc;
+};
+
+/* Pseudo L2 Header */
+#define FWNET_HLEN      18
+struct fwnet_header {
+        u8 h_dest[FWNET_ALEN];  /* destination address */
+        __be16 h_proto;         /* packet type ID field */
+} __packed;
+
+#endif
diff --git a/include/net/gre.h b/include/net/gre.h
index 82665474bcb7..9f03a390c826 100644
--- a/include/net/gre.h
+++ b/include/net/gre.h
@@ -2,6 +2,7 @@
 #define __LINUX_GRE_H
 
 #include <linux/skbuff.h>
+#include <net/ip_tunnels.h>
 
 #define GREPROTO_CISCO          0
 #define GREPROTO_PPTP           1
@@ -12,7 +13,57 @@ struct gre_protocol {
         void (*err_handler)(struct sk_buff *skb, u32 info);
 };
 
+struct gre_base_hdr {
+        __be16 flags;
+        __be16 protocol;
+};
+#define GRE_HEADER_SECTION 4
+
 int gre_add_protocol(const struct gre_protocol *proto, u8 version);
 int gre_del_protocol(const struct gre_protocol *proto, u8 version);
 
+static inline __be16 gre_flags_to_tnl_flags(__be16 flags)
+{
+        __be16 tflags = 0;
+
+        if (flags & GRE_CSUM)
+                tflags |= TUNNEL_CSUM;
+        if (flags & GRE_ROUTING)
+                tflags |= TUNNEL_ROUTING;
+        if (flags & GRE_KEY)
+                tflags |= TUNNEL_KEY;
+        if (flags & GRE_SEQ)
+                tflags |= TUNNEL_SEQ;
+        if (flags & GRE_STRICT)
+                tflags |= TUNNEL_STRICT;
+        if (flags & GRE_REC)
+                tflags |= TUNNEL_REC;
+        if (flags & GRE_VERSION)
+                tflags |= TUNNEL_VERSION;
+
+        return tflags;
+}
+
+static inline __be16 tnl_flags_to_gre_flags(__be16 tflags)
+{
+        __be16 flags = 0;
+
+        if (tflags & TUNNEL_CSUM)
+                flags |= GRE_CSUM;
+        if (tflags & TUNNEL_ROUTING)
+                flags |= GRE_ROUTING;
+        if (tflags & TUNNEL_KEY)
+                flags |= GRE_KEY;
+        if (tflags & TUNNEL_SEQ)
+                flags |= GRE_SEQ;
+        if (tflags & TUNNEL_STRICT)
+                flags |= GRE_STRICT;
+        if (tflags & TUNNEL_REC)
+                flags |= GRE_REC;
+        if (tflags & TUNNEL_VERSION)
+                flags |= GRE_VERSION;
+
+        return flags;
+}
+
 #endif
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index 183292722f6e..de2c78529afa 100644
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -133,6 +133,8 @@ struct inet_connection_sock {
 #define ICSK_TIME_RETRANS       1       /* Retransmit timer */
 #define ICSK_TIME_DACK          2       /* Delayed ack timer */
 #define ICSK_TIME_PROBE0        3       /* Zero window probe timer */
+#define ICSK_TIME_EARLY_RETRANS 4       /* Early retransmit timer */
+#define ICSK_TIME_LOSS_PROBE    5       /* Tail loss probe timer */
 
 static inline struct inet_connection_sock *inet_csk(const struct sock *sk)
 {
@@ -222,7 +224,8 @@ static inline void inet_csk_reset_xmit_timer(struct sock *sk, const int what,
                 when = max_when;
         }
 
-        if (what == ICSK_TIME_RETRANS || what == ICSK_TIME_PROBE0) {
+        if (what == ICSK_TIME_RETRANS || what == ICSK_TIME_PROBE0 ||
+            what == ICSK_TIME_EARLY_RETRANS || what ==  ICSK_TIME_LOSS_PROBE) {
                 icsk->icsk_pending = what;
                 icsk->icsk_timeout = jiffies + when;
                 sk_reset_timer(sk, &icsk->icsk_retransmit_timer, icsk->icsk_timeout);
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 0a1dcc2fa2f5..7cac9c5789b5 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -143,6 +143,7 @@ static inline void inet_frag_lru_del(struct inet_frag_queue *q)
 {
         spin_lock(&q->net->lru_lock);
         list_del(&q->lru_list);
+        q->net->nqueues--;
         spin_unlock(&q->net->lru_lock);
 }
 
@@ -151,6 +152,19 @@ static inline void inet_frag_lru_add(struct netns_frags *nf,
 {
         spin_lock(&nf->lru_lock);
         list_add_tail(&q->lru_list, &nf->lru_list);
+        q->net->nqueues++;
         spin_unlock(&nf->lru_lock);
 }
+
+/* RFC 3168 support :
+ * We want to check ECN values of all fragments, do detect invalid combinations.
+ * In ipq->ecn, we store the OR value of each ip4_frag_ecn() fragment value.
+ */
+#define IPFRAG_ECN_NOT_ECT      0x01 /* one frag had ECN_NOT_ECT */
+#define IPFRAG_ECN_ECT_1        0x02 /* one frag had ECN_ECT_1 */
+#define IPFRAG_ECN_ECT_0        0x04 /* one frag had ECN_ECT_0 */
+#define IPFRAG_ECN_CE           0x08 /* one frag had ECN_CE */
+
+extern const u8 ip_frag_ecn_table[16];
+
 #endif
diff --git a/include/net/ip6_tunnel.h b/include/net/ip6_tunnel.h
index e03047f7090b..4da5de10d1d4 100644
--- a/include/net/ip6_tunnel.h
+++ b/include/net/ip6_tunnel.h
@@ -3,6 +3,7 @@
 
 #include <linux/ipv6.h>
 #include <linux/netdevice.h>
+#include <linux/if_tunnel.h>
 #include <linux/ip6_tunnel.h>
 
 #define IP6TUNNEL_ERR_TIMEO (30*HZ)
@@ -68,4 +69,24 @@ __u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw);
 __u32 ip6_tnl_get_cap(struct ip6_tnl *t, const struct in6_addr *laddr,
                              const struct in6_addr *raddr);
 
+static inline void ip6tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+        struct net_device_stats *stats = &dev->stats;
+        int pkt_len, err;
+
+        nf_reset(skb);
+        pkt_len = skb->len;
+        err = ip6_local_out(skb);
+
+        if (net_xmit_eval(err) == 0) {
+                struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats);
+                u64_stats_update_begin(&tstats->syncp);
+                tstats->tx_bytes += pkt_len;
+                tstats->tx_packets++;
+                u64_stats_update_end(&tstats->syncp);
+        } else {
+                stats->tx_errors++;
+                stats->tx_aborted_errors++;
+        }
+}
 #endif
diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
new file mode 100644
index 000000000000..4b6f0b28f41f
--- /dev/null
+++ b/include/net/ip_tunnels.h
@@ -0,0 +1,177 @@
+#ifndef __NET_IP_TUNNELS_H
+#define __NET_IP_TUNNELS_H 1
+
+#include <linux/if_tunnel.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/types.h>
+#include <linux/u64_stats_sync.h>
+#include <net/dsfield.h>
+#include <net/gro_cells.h>
+#include <net/inet_ecn.h>
+#include <net/ip.h>
+#include <net/rtnetlink.h>
+
+#if IS_ENABLED(CONFIG_IPV6)
+#include <net/ipv6.h>
+#include <net/ip6_fib.h>
+#include <net/ip6_route.h>
+#endif
+
+/* Keep error state on tunnel for 30 sec */
+#define IPTUNNEL_ERR_TIMEO      (30*HZ)
+
+/* 6rd prefix/relay information */
+#ifdef CONFIG_IPV6_SIT_6RD
+struct ip_tunnel_6rd_parm {
+        struct in6_addr         prefix;
+        __be32                  relay_prefix;
+        u16                     prefixlen;
+        u16                     relay_prefixlen;
+};
+#endif
+
+struct ip_tunnel_prl_entry {
+        struct ip_tunnel_prl_entry __rcu *next;
+        __be32                          addr;
+        u16                             flags;
+        struct rcu_head                 rcu_head;
+};
+
+struct ip_tunnel {
+        struct ip_tunnel __rcu  *next;
+        struct hlist_node hash_node;
+        struct net_device       *dev;
+
+        int             err_count;      /* Number of arrived ICMP errors */
+        unsigned long   err_time;       /* Time when the last ICMP error
+                                         * arrived */
+
+        /* These four fields used only by GRE */
+        __u32           i_seqno;        /* The last seen seqno  */
+        __u32           o_seqno;        /* The last output seqno */
+        int             hlen;           /* Precalculated header length */
+        int             mlink;
+
+        struct ip_tunnel_parm parms;
+
+        /* for SIT */
+#ifdef CONFIG_IPV6_SIT_6RD
+        struct ip_tunnel_6rd_parm ip6rd;
+#endif
+        struct ip_tunnel_prl_entry __rcu *prl;  /* potential router list */
+        unsigned int            prl_count;      /* # of entries in PRL */
+        int                     ip_tnl_net_id;
+        struct gro_cells        gro_cells;
+};
+
+#define TUNNEL_CSUM     __cpu_to_be16(0x01)
+#define TUNNEL_ROUTING  __cpu_to_be16(0x02)
+#define TUNNEL_KEY      __cpu_to_be16(0x04)
+#define TUNNEL_SEQ      __cpu_to_be16(0x08)
+#define TUNNEL_STRICT   __cpu_to_be16(0x10)
+#define TUNNEL_REC      __cpu_to_be16(0x20)
+#define TUNNEL_VERSION  __cpu_to_be16(0x40)
+#define TUNNEL_NO_KEY   __cpu_to_be16(0x80)
+
+struct tnl_ptk_info {
+        __be16 flags;
+        __be16 proto;
+        __be32 key;
+        __be32 seq;
+};
+
+#define PACKET_RCVD     0
+#define PACKET_REJECT   1
+
+#define IP_TNL_HASH_BITS   10
+#define IP_TNL_HASH_SIZE   (1 << IP_TNL_HASH_BITS)
+
+struct ip_tunnel_net {
+        struct hlist_head *tunnels;
+        struct net_device *fb_tunnel_dev;
+};
+
+int ip_tunnel_init(struct net_device *dev);
+void ip_tunnel_uninit(struct net_device *dev);
+void  ip_tunnel_dellink(struct net_device *dev, struct list_head *head);
+int __net_init ip_tunnel_init_net(struct net *net, int ip_tnl_net_id,
+                                  struct rtnl_link_ops *ops, char *devname);
+
+void __net_exit ip_tunnel_delete_net(struct ip_tunnel_net *itn);
+
+void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
+                    const struct iphdr *tnl_params);
+int ip_tunnel_ioctl(struct net_device *dev, struct ip_tunnel_parm *p, int cmd);
+int ip_tunnel_change_mtu(struct net_device *dev, int new_mtu);
+
+struct rtnl_link_stats64 *ip_tunnel_get_stats64(struct net_device *dev,
+                                                struct rtnl_link_stats64 *tot);
+struct ip_tunnel *ip_tunnel_lookup(struct ip_tunnel_net *itn,
+                                   int link, __be16 flags,
+                                   __be32 remote, __be32 local,
+                                   __be32 key);
+
+int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
+                  const struct tnl_ptk_info *tpi, bool log_ecn_error);
+int ip_tunnel_changelink(struct net_device *dev, struct nlattr *tb[],
+                         struct ip_tunnel_parm *p);
+int ip_tunnel_newlink(struct net_device *dev, struct nlattr *tb[],
+                      struct ip_tunnel_parm *p);
+void ip_tunnel_setup(struct net_device *dev, int net_id);
+
+/* Extract dsfield from inner protocol */
+static inline u8 ip_tunnel_get_dsfield(const struct iphdr *iph,
+                                       const struct sk_buff *skb)
+{
+        if (skb->protocol == htons(ETH_P_IP))
+                return iph->tos;
+        else if (skb->protocol == htons(ETH_P_IPV6))
+                return ipv6_get_dsfield((const struct ipv6hdr *)iph);
+        else
+                return 0;
+}
+
+/* Propogate ECN bits out */
+static inline u8 ip_tunnel_ecn_encap(u8 tos, const struct iphdr *iph,
+                                     const struct sk_buff *skb)
+{
+        u8 inner = ip_tunnel_get_dsfield(iph, skb);
+
+        return INET_ECN_encapsulate(tos, inner);
+}
+
+static inline void tunnel_ip_select_ident(struct sk_buff *skb,
+                                          const struct iphdr  *old_iph,
+                                          struct dst_entry *dst)
+{
+        struct iphdr *iph = ip_hdr(skb);
+
+        /* Use inner packet iph-id if possible. */
+        if (skb->protocol == htons(ETH_P_IP) && old_iph->id)
+                iph->id = old_iph->id;
+        else
+                __ip_select_ident(iph, dst,
+                                  (skb_shinfo(skb)->gso_segs ?: 1) - 1);
+}
+
+static inline void iptunnel_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+        int err;
+        int pkt_len = skb->len - skb_transport_offset(skb);
+        struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats);
+
+        nf_reset(skb);
+
+        err = ip_local_out(skb);
+        if (likely(net_xmit_eval(err) == 0)) {
+                u64_stats_update_begin(&tstats->syncp);
+                tstats->tx_bytes += pkt_len;
+                tstats->tx_packets++;
+                u64_stats_update_end(&tstats->syncp);
+        } else {
+                dev->stats.tx_errors++;
+                dev->stats.tx_aborted_errors++;
+        }
+}
+#endif /* __NET_IP_TUNNELS_H */
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index fce8e6b66d55..bee87badabef 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -459,7 +459,7 @@ struct ip_vs_estimator {
 struct ip_vs_stats {
         struct ip_vs_stats_user ustats;         /* statistics */
         struct ip_vs_estimator  est;            /* estimator */
-        struct ip_vs_cpu_stats  *cpustats;      /* per cpu counters */
+        struct ip_vs_cpu_stats __percpu *cpustats;      /* per cpu counters */
         spinlock_t              lock;           /* spin lock */
         struct ip_vs_stats_user ustats0;        /* reset values */
 };
diff --git a/include/net/ipip.h b/include/net/ipip.h
deleted file mode 100644
index 982141c15200..000000000000
--- a/include/net/ipip.h
+++ /dev/null
@@ -1,87 +0,0 @@
-#ifndef __NET_IPIP_H
-#define __NET_IPIP_H 1
-
-#include <linux/if_tunnel.h>
-#include <net/gro_cells.h>
-#include <net/ip.h>
-
-/* Keep error state on tunnel for 30 sec */
-#define IPTUNNEL_ERR_TIMEO      (30*HZ)
-
-/* 6rd prefix/relay information */
-struct ip_tunnel_6rd_parm {
-        struct in6_addr         prefix;
-        __be32                  relay_prefix;
-        u16                     prefixlen;
-        u16                     relay_prefixlen;
-};
-
-struct ip_tunnel {
-        struct ip_tunnel __rcu  *next;
-        struct net_device       *dev;
-
-        int                     err_count;      /* Number of arrived ICMP errors */
-        unsigned long           err_time;       /* Time when the last ICMP error arrived */
-
-        /* These four fields used only by GRE */
-        __u32                   i_seqno;        /* The last seen seqno  */
-        __u32                   o_seqno;        /* The last output seqno */
-        int                     hlen;           /* Precalculated GRE header length */
-        int                     mlink;
-
-        struct ip_tunnel_parm   parms;
-
-        /* for SIT */
-#ifdef CONFIG_IPV6_SIT_6RD
-        struct ip_tunnel_6rd_parm       ip6rd;
-#endif
-        struct ip_tunnel_prl_entry __rcu *prl;          /* potential router list */
-        unsigned int                    prl_count;      /* # of entries in PRL */
-
-        struct gro_cells                gro_cells;
-};
-
-struct ip_tunnel_prl_entry {
-        struct ip_tunnel_prl_entry __rcu *next;
-        __be32                          addr;
-        u16                             flags;
-        struct rcu_head                 rcu_head;
-};
-
-static inline void iptunnel_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-        int err;
-        struct iphdr *iph = ip_hdr(skb);
-        int pkt_len = skb->len - skb_transport_offset(skb);
-        struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats);
-
-        nf_reset(skb);
-        skb->ip_summed = CHECKSUM_NONE;
-        ip_select_ident(iph, skb_dst(skb), NULL);
-
-        err = ip_local_out(skb);
-        if (likely(net_xmit_eval(err) == 0)) {
-                u64_stats_update_begin(&tstats->syncp);
-                tstats->tx_bytes += pkt_len;
-                tstats->tx_packets++;
-                u64_stats_update_end(&tstats->syncp);
-        } else {
-                dev->stats.tx_errors++;
-                dev->stats.tx_aborted_errors++;
-        }
-}
-
-static inline void tunnel_ip_select_ident(struct sk_buff *skb,
-                                          const struct iphdr  *old_iph,
-                                          struct dst_entry *dst)
-{
-        struct iphdr *iph = ip_hdr(skb);
-
-        /* Use inner packet iph-id if possible. */
-        if (skb->protocol == htons(ETH_P_IP) && old_iph->id)
-                iph->id = old_iph->id;
-        else
-                __ip_select_ident(iph, dst,
-                                  (skb_shinfo(skb)->gso_segs ?: 1) - 1);
-}
-#endif
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 64d12e77719a..0810aa57c780 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -217,7 +217,7 @@ struct ipv6_txoptions {
 };
 
 struct ip6_flowlabel {
-        struct ip6_flowlabel    *next;
+        struct ip6_flowlabel __rcu *next;
         __be32                  label;
         atomic_t                users;
         struct in6_addr         dst;
@@ -238,9 +238,9 @@ struct ip6_flowlabel {
 #define IPV6_FLOWLABEL_MASK     cpu_to_be32(0x000FFFFF)
 
 struct ipv6_fl_socklist {
-        struct ipv6_fl_socklist *next;
-        struct ip6_flowlabel    *fl;
-        struct rcu_head         rcu;
+        struct ipv6_fl_socklist __rcu   *next;
+        struct ip6_flowlabel            *fl;
+        struct rcu_head                 rcu;
 };
 
 extern struct ip6_flowlabel     *fl6_sock_lookup(struct sock *sk, __be32 label);
@@ -320,6 +320,18 @@ static inline int ipv6_addr_src_scope(const struct in6_addr *addr)
         return __ipv6_addr_src_scope(__ipv6_addr_type(addr));
 }
 
+static inline bool __ipv6_addr_needs_scope_id(int type)
+{
+        return type & IPV6_ADDR_LINKLOCAL ||
+               (type & IPV6_ADDR_MULTICAST &&
+                (type & (IPV6_ADDR_LOOPBACK|IPV6_ADDR_LINKLOCAL)));
+}
+
+static inline __u32 ipv6_iface_scope_id(const struct in6_addr *addr, int iface)
+{
+        return __ipv6_addr_needs_scope_id(__ipv6_addr_type(addr)) ? iface : 0;
+}
+
 static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr *a2)
 {
         return memcmp(a1, a2, sizeof(struct in6_addr));
@@ -466,6 +478,7 @@ struct ip6_create_arg {
         u32 user;
         const struct in6_addr *src;
         const struct in6_addr *dst;
+        u8 ecn;
 };
 
 void ip6_frag_init(struct inet_frag_queue *q, void *a);
@@ -485,6 +498,7 @@ struct frag_queue {
         int                     iif;
         unsigned int            csum;
         __u16                   nhoffset;
+        u8                      ecn;
 };
 
 void ip6_expire_frag_queue(struct net *net, struct frag_queue *fq,
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index f7eba1300d82..cdd7cea1fd4c 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1101,8 +1101,6 @@ static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif)
  * These flags are used for communication about keys between the driver
  * and mac80211, with the @flags parameter of &struct ieee80211_key_conf.
  *
- * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates
- *      that the STA this key will be used with could be using QoS.
  * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the
  *      driver to indicate that it requires IV generation for this
  *      particular key.
@@ -1127,7 +1125,6 @@ static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif)
  *      %IEEE80211_KEY_FLAG_SW_MGMT_TX flag to encrypt such frames in SW.
  */
 enum ieee80211_key_flags {
-        IEEE80211_KEY_FLAG_WMM_STA      = 1<<0,
         IEEE80211_KEY_FLAG_GENERATE_IV  = 1<<1,
         IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2,
         IEEE80211_KEY_FLAG_PAIRWISE     = 1<<3,
@@ -1231,9 +1228,8 @@ enum ieee80211_sta_rx_bandwidth {
  * @addr: MAC address
  * @aid: AID we assigned to the station if we're an AP
  * @supp_rates: Bitmap of supported rates (per band)
- * @ht_cap: HT capabilities of this STA; restricted to our own TX capabilities
- * @vht_cap: VHT capabilities of this STA; Not restricting any capabilities
- *      of remote STA. Taking as is.
+ * @ht_cap: HT capabilities of this STA; restricted to our own capabilities
+ * @vht_cap: VHT capabilities of this STA; restricted to our own capabilities
  * @wme: indicates whether the STA supports WME. Only valid during AP-mode.
  * @drv_priv: data area for driver use, will always be aligned to
  *      sizeof(void *), size is determined in hw information.
@@ -2135,6 +2131,24 @@ enum ieee80211_rate_control_changed {
 };
 
 /**
+ * enum ieee80211_roc_type - remain on channel type
+ *
+ * With the support for multi channel contexts and multi channel operations,
+ * remain on channel operations might be limited/deferred/aborted by other
+ * flows/operations which have higher priority (and vise versa).
+ * Specifying the ROC type can be used by devices to prioritize the ROC
+ * operations compared to other operations/flows.
+ *
+ * @IEEE80211_ROC_TYPE_NORMAL: There are no special requirements for this ROC.
+ * @IEEE80211_ROC_TYPE_MGMT_TX: The remain on channel request is required
+ *      for sending managment frames offchannel.
+ */
+enum ieee80211_roc_type {
+        IEEE80211_ROC_TYPE_NORMAL = 0,
+        IEEE80211_ROC_TYPE_MGMT_TX,
+};
+
+/**
  * struct ieee80211_ops - callbacks from mac80211 to the driver
  *
  * This structure contains various callbacks that the driver may
@@ -2687,7 +2701,8 @@ struct ieee80211_ops {
         int (*remain_on_channel)(struct ieee80211_hw *hw,
                                  struct ieee80211_vif *vif,
                                  struct ieee80211_channel *chan,
-                                 int duration);
+                                 int duration,
+                                 enum ieee80211_roc_type type);
         int (*cancel_remain_on_channel)(struct ieee80211_hw *hw);
         int (*set_ringparam)(struct ieee80211_hw *hw, u32 tx, u32 rx);
         void (*get_ringparam)(struct ieee80211_hw *hw,
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
index 930275fa2ea6..fb2b6234e937 100644
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -27,6 +27,7 @@ extern unsigned int nf_conntrack_in(struct net *net,
 
 extern int nf_conntrack_init_net(struct net *net);
 extern void nf_conntrack_cleanup_net(struct net *net);
+extern void nf_conntrack_cleanup_net_list(struct list_head *net_exit_list);
 
 extern int nf_conntrack_proto_pernet_init(struct net *net);
 extern void nf_conntrack_proto_pernet_fini(struct net *net);
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
index 1242f371718b..005e2c2e39a9 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -71,6 +71,7 @@ struct netns_ipv6 {
         struct fib_rules_ops    *mr6_rules_ops;
 #endif
 #endif
+        atomic_t                dev_addr_genid;
 };
 
 #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index a51dbd17c2de..9069e65c1c56 100644
--- a/include/net/request_sock.h
+++ b/include/net/request_sock.h
@@ -27,19 +27,13 @@ struct sk_buff;
 struct dst_entry;
 struct proto;
 
-/* empty to "strongly type" an otherwise void parameter.
- */
-struct request_values {
-};
-
 struct request_sock_ops {
         int             family;
         int             obj_size;
         struct kmem_cache       *slab;
         char            *slab_name;
         int             (*rtx_syn_ack)(struct sock *sk,
-                                       struct request_sock *req,
-                                       struct request_values *rvp);
+                                       struct request_sock *req);
         void            (*send_ack)(struct sock *sk, struct sk_buff *skb,
                                     struct request_sock *req);
         void            (*send_reset)(struct sock *sk,
diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h
index 5a15fabd6a75..702664833a53 100644
--- a/include/net/rtnetlink.h
+++ b/include/net/rtnetlink.h
@@ -4,7 +4,7 @@
 #include <linux/rtnetlink.h>
 #include <net/netlink.h>
 
-typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *, void *);
+typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *);
 typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
 typedef u16 (*rtnl_calcit_func)(struct sk_buff *, struct nlmsghdr *);
 
diff --git a/include/net/sock.h b/include/net/sock.h
index 14f6e9d19dc7..08f05f964737 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -667,6 +667,7 @@ enum sock_flags {
                      * user-space instead.
                      */
         SOCK_FILTER_LOCKED, /* Filter cannot be changed anymore */
+        SOCK_SELECT_ERR_QUEUE, /* Wake select on error queue */
 };
 
 static inline void sock_copy_flags(struct sock *nsk, struct sock *osk)
diff --git a/include/net/tcp.h b/include/net/tcp.h
index cf0694d4ad60..4475aaf0af57 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -179,7 +179,6 @@ extern void tcp_time_wait(struct sock *sk, int state, int timeo);
 #define TCPOPT_SACK             5       /* SACK Block */
 #define TCPOPT_TIMESTAMP        8       /* Better RTT estimations/PAWS */
 #define TCPOPT_MD5SIG           19      /* MD5 Signature (RFC2385) */
-#define TCPOPT_COOKIE           253     /* Cookie extension (experimental) */
 #define TCPOPT_EXP              254     /* Experimental */
 /* Magic number to be after the option value for sharing TCP
  * experimental options. See draft-ietf-tcpm-experimental-options-00.txt
@@ -273,7 +272,6 @@ extern int sysctl_tcp_app_win;
 extern int sysctl_tcp_adv_win_scale;
 extern int sysctl_tcp_tw_reuse;
 extern int sysctl_tcp_frto;
-extern int sysctl_tcp_frto_response;
 extern int sysctl_tcp_low_latency;
 extern int sysctl_tcp_dma_copybreak;
 extern int sysctl_tcp_nometrics_save;
@@ -284,7 +282,6 @@ extern int sysctl_tcp_base_mss;
 extern int sysctl_tcp_workaround_signed_windows;
 extern int sysctl_tcp_slow_start_after_idle;
 extern int sysctl_tcp_max_ssthresh;
-extern int sysctl_tcp_cookie_size;
 extern int sysctl_tcp_thin_linear_timeouts;
 extern int sysctl_tcp_thin_dupack;
 extern int sysctl_tcp_early_retrans;
@@ -425,8 +422,6 @@ extern struct sock * tcp_check_req(struct sock *sk,struct sk_buff *skb,
                                    bool fastopen);
 extern int tcp_child_process(struct sock *parent, struct sock *child,
                              struct sk_buff *skb);
-extern bool tcp_use_frto(struct sock *sk);
-extern void tcp_enter_frto(struct sock *sk);
 extern void tcp_enter_loss(struct sock *sk, int how);
 extern void tcp_clear_retrans(struct tcp_sock *tp);
 extern void tcp_update_metrics(struct sock *sk);
@@ -454,7 +449,7 @@ extern void tcp_syn_ack_timeout(struct sock *sk, struct request_sock *req);
 extern int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                        size_t len, int nonblock, int flags, int *addr_len);
 extern void tcp_parse_options(const struct sk_buff *skb,
-                              struct tcp_options_received *opt_rx, const u8 **hvpp,
+                              struct tcp_options_received *opt_rx,
                               int estab, struct tcp_fastopen_cookie *foc);
 extern const u8 *tcp_parse_md5sig_option(const struct tcphdr *th);
 
@@ -476,7 +471,6 @@ extern int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr,
 extern int tcp_connect(struct sock *sk);
 extern struct sk_buff * tcp_make_synack(struct sock *sk, struct dst_entry *dst,
                                         struct request_sock *req,
-                                        struct request_values *rvp,
                                         struct tcp_fastopen_cookie *foc);
 extern int tcp_disconnect(struct sock *sk, int flags);
 
@@ -543,6 +537,8 @@ extern bool tcp_syn_flood_action(struct sock *sk,
 extern void tcp_push_one(struct sock *, unsigned int mss_now);
 extern void tcp_send_ack(struct sock *sk);
 extern void tcp_send_delayed_ack(struct sock *sk);
+extern void tcp_send_loss_probe(struct sock *sk);
+extern bool tcp_schedule_loss_probe(struct sock *sk);
 
 /* tcp_input.c */
 extern void tcp_cwnd_application_limited(struct sock *sk);
@@ -756,7 +752,6 @@ enum tcp_ca_event {
         CA_EVENT_TX_START,      /* first transmit when no packets in flight */
         CA_EVENT_CWND_RESTART,  /* congestion window restart */
         CA_EVENT_COMPLETE_CWR,  /* end of congestion recovery */
-        CA_EVENT_FRTO,          /* fast recovery timeout */
         CA_EVENT_LOSS,          /* loss timeout */
         CA_EVENT_FAST_ACK,      /* in sequence ack */
         CA_EVENT_SLOW_ACK,      /* other ack */
@@ -873,8 +868,8 @@ static inline void tcp_enable_fack(struct tcp_sock *tp)
 static inline void tcp_enable_early_retrans(struct tcp_sock *tp)
 {
         tp->do_early_retrans = sysctl_tcp_early_retrans &&
-                !sysctl_tcp_thin_dupack && sysctl_tcp_reordering == 3;
-        tp->early_retrans_delayed = 0;
+                sysctl_tcp_early_retrans < 4 && !sysctl_tcp_thin_dupack &&
+                sysctl_tcp_reordering == 3;
 }
 
 static inline void tcp_disable_early_retrans(struct tcp_sock *tp)
@@ -1030,50 +1025,7 @@ static inline void tcp_prequeue_init(struct tcp_sock *tp)
 #endif
 }
 
-/* Packet is added to VJ-style prequeue for processing in process
- * context, if a reader task is waiting. Apparently, this exciting
- * idea (VJ's mail "Re: query about TCP header on tcp-ip" of 07 Sep 93)
- * failed somewhere. Latency? Burstiness? Well, at least now we will
- * see, why it failed. 8)8)                               --ANK
- *
- * NOTE: is this not too big to inline?
- */
-static inline bool tcp_prequeue(struct sock *sk, struct sk_buff *skb)
-{
-        struct tcp_sock *tp = tcp_sk(sk);
-
-        if (sysctl_tcp_low_latency || !tp->ucopy.task)
-                return false;
-
-        if (skb->len <= tcp_hdrlen(skb) &&
-            skb_queue_len(&tp->ucopy.prequeue) == 0)
-                return false;
-
-        __skb_queue_tail(&tp->ucopy.prequeue, skb);
-        tp->ucopy.memory += skb->truesize;
-        if (tp->ucopy.memory > sk->sk_rcvbuf) {
-                struct sk_buff *skb1;
-
-                BUG_ON(sock_owned_by_user(sk));
-
-                while ((skb1 = __skb_dequeue(&tp->ucopy.prequeue)) != NULL) {
-                        sk_backlog_rcv(sk, skb1);
-                        NET_INC_STATS_BH(sock_net(sk),
-                                         LINUX_MIB_TCPPREQUEUEDROPPED);
-                }
-
-                tp->ucopy.memory = 0;
-        } else if (skb_queue_len(&tp->ucopy.prequeue) == 1) {
-                wake_up_interruptible_sync_poll(sk_sleep(sk),
-                                           POLLIN | POLLRDNORM | POLLRDBAND);
-                if (!inet_csk_ack_scheduled(sk))
-                        inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK,
-                                                  (3 * tcp_rto_min(sk)) / 4,
-                                                  TCP_RTO_MAX);
-        }
-        return true;
-}
-
+extern bool tcp_prequeue(struct sock *sk, struct sk_buff *skb);
 
 #undef STATE_TRACE
 
@@ -1630,91 +1582,6 @@ struct tcp_request_sock_ops {
 #endif
 };
 
-/* Using SHA1 for now, define some constants.
- */
-#define COOKIE_DIGEST_WORDS (SHA_DIGEST_WORDS)
-#define COOKIE_MESSAGE_WORDS (SHA_MESSAGE_BYTES / 4)
-#define COOKIE_WORKSPACE_WORDS (COOKIE_DIGEST_WORDS + COOKIE_MESSAGE_WORDS)
-
-extern int tcp_cookie_generator(u32 *bakery);
-
-/**
- *      struct tcp_cookie_values - each socket needs extra space for the
- *      cookies, together with (optional) space for any SYN data.
- *
- *      A tcp_sock contains a pointer to the current value, and this is
- *      cloned to the tcp_timewait_sock.
- *
- * @cookie_pair:        variable data from the option exchange.
- *
- * @cookie_desired:     user specified tcpct_cookie_desired.  Zero
- *                      indicates default (sysctl_tcp_cookie_size).
- *                      After cookie sent, remembers size of cookie.
- *                      Range 0, TCP_COOKIE_MIN to TCP_COOKIE_MAX.
- *
- * @s_data_desired:     user specified tcpct_s_data_desired.  When the
- *                      constant payload is specified (@s_data_constant),
- *                      holds its length instead.
- *                      Range 0 to TCP_MSS_DESIRED.
- *
- * @s_data_payload:     constant data that is to be included in the
- *                      payload of SYN or SYNACK segments when the
- *                      cookie option is present.
- */
-struct tcp_cookie_values {
-        struct kref     kref;
-        u8              cookie_pair[TCP_COOKIE_PAIR_SIZE];
-        u8              cookie_pair_size;
-        u8              cookie_desired;
-        u16             s_data_desired:11,
-                        s_data_constant:1,
-                        s_data_in:1,
-                        s_data_out:1,
-                        s_data_unused:2;
-        u8              s_data_payload[0];
-};
-
-static inline void tcp_cookie_values_release(struct kref *kref)
-{
-        kfree(container_of(kref, struct tcp_cookie_values, kref));
-}
-
-/* The length of constant payload data.  Note that s_data_desired is
- * overloaded, depending on s_data_constant: either the length of constant
- * data (returned here) or the limit on variable data.
- */
-static inline int tcp_s_data_size(const struct tcp_sock *tp)
-{
-        return (tp->cookie_values != NULL && tp->cookie_values->s_data_constant)
-                ? tp->cookie_values->s_data_desired
-                : 0;
-}
-
-/**
- *      struct tcp_extend_values - tcp_ipv?.c to tcp_output.c workspace.
- *
- *      As tcp_request_sock has already been extended in other places, the
- *      only remaining method is to pass stack values along as function
- *      parameters.  These parameters are not needed after sending SYNACK.
- *
- * @cookie_bakery:      cryptographic secret and message workspace.
- *
- * @cookie_plus:        bytes in authenticator/cookie option, copied from
- *                      struct tcp_options_received (above).
- */
-struct tcp_extend_values {
-        struct request_values           rv;
-        u32                             cookie_bakery[COOKIE_WORKSPACE_WORDS];
-        u8                              cookie_plus:6,
-                                        cookie_out_never:1,
-                                        cookie_in_always:1;
-};
-
-static inline struct tcp_extend_values *tcp_xv(struct request_values *rvp)
-{
-        return (struct tcp_extend_values *)rvp;
-}
-
 extern void tcp_v4_init(void);
 extern void tcp_init(void);