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

Pull networking updates from David Miller:

 1) New offloading infrastructure and example 'rocker' driver for
    offloading of switching and routing to hardware.

    This work was done by a large group of dedicated individuals, not
    limited to: Scott Feldman, Jiri Pirko, Thomas Graf, John Fastabend,
    Jamal Hadi Salim, Andy Gospodarek, Florian Fainelli, Roopa Prabhu

 2) Start making the networking operate on IOV iterators instead of
    modifying iov objects in-situ during transfers.  Thanks to Al Viro
    and Herbert Xu.

 3) A set of new netlink interfaces for the TIPC stack, from Richard
    Alpe.

 4) Remove unnecessary looping during ipv6 routing lookups, from Martin
    KaFai Lau.

 5) Add PAUSE frame generation support to gianfar driver, from Matei
    Pavaluca.

 6) Allow for larger reordering levels in TCP, which are easily
    achievable in the real world right now, from Eric Dumazet.

 7) Add a variable of napi_schedule that doesn't need to disable cpu
    interrupts, from Eric Dumazet.

 8) Use a doubly linked list to optimize neigh_parms_release(), from
    Nicolas Dichtel.

 9) Various enhancements to the kernel BPF verifier, and allow eBPF
    programs to actually be attached to sockets.  From Alexei
    Starovoitov.

10) Support TSO/LSO in sunvnet driver, from David L Stevens.

11) Allow controlling ECN usage via routing metrics, from Florian
    Westphal.

12) Remote checksum offload, from Tom Herbert.

13) Add split-header receive, BQL, and xmit_more support to amd-xgbe
    driver, from Thomas Lendacky.

14) Add MPLS support to openvswitch, from Simon Horman.

15) Support wildcard tunnel endpoints in ipv6 tunnels, from Steffen
    Klassert.

16) Do gro flushes on a per-device basis using a timer, from Eric
    Dumazet.  This tries to resolve the conflicting goals between the
    desired handling of bulk vs.  RPC-like traffic.

17) Allow userspace to ask for the CPU upon what a packet was
    received/steered, via SO_INCOMING_CPU.  From Eric Dumazet.

18) Limit GSO packets to half the current congestion window, from Eric
    Dumazet.

19) Add a generic helper so that all drivers set their RSS keys in a
    consistent way, from Eric Dumazet.

20) Add xmit_more support to enic driver, from Govindarajulu
    Varadarajan.

21) Add VLAN packet scheduler action, from Jiri Pirko.

22) Support configurable RSS hash functions via ethtool, from Eyal
    Perry.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1820 commits)
  Fix race condition between vxlan_sock_add and vxlan_sock_release
  net/macb: fix compilation warning for print_hex_dump() called with skb->mac_header
  net/mlx4: Add support for A0 steering
  net/mlx4: Refactor QUERY_PORT
  net/mlx4_core: Add explicit error message when rule doesn't meet configuration
  net/mlx4: Add A0 hybrid steering
  net/mlx4: Add mlx4_bitmap zone allocator
  net/mlx4: Add a check if there are too many reserved QPs
  net/mlx4: Change QP allocation scheme
  net/mlx4_core: Use tasklet for user-space CQ completion events
  net/mlx4_core: Mask out host side virtualization features for guests
  net/mlx4_en: Set csum level for encapsulated packets
  be2net: Export tunnel offloads only when a VxLAN tunnel is created
  gianfar: Fix dma check map error when DMA_API_DEBUG is enabled
  cxgb4/csiostor: Don't use MASTER_MUST for fw_hello call
  net: fec: only enable mdio interrupt before phy device link up
  net: fec: clear all interrupt events to support i.MX6SX
  net: fec: reset fep link status in suspend function
  net: sock: fix access via invalid file descriptor
  net: introduce helper macro for_each_cmsghdr
  ...

1 files changed, 102 insertions, 6 deletions

diff --git a/net/tipc/node.c b/net/tipc/node.c
index 5781634e957d..8d353ec77a66 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -58,6 +58,12 @@ struct tipc_sock_conn {
         struct list_head list;
 };
 
+static const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = {
+        [TIPC_NLA_NODE_UNSPEC]          = { .type = NLA_UNSPEC },
+        [TIPC_NLA_NODE_ADDR]            = { .type = NLA_U32 },
+        [TIPC_NLA_NODE_UP]              = { .type = NLA_FLAG }
+};
+
 /*
  * A trivial power-of-two bitmask technique is used for speed, since this
  * operation is done for every incoming TIPC packet. The number of hash table
@@ -107,9 +113,10 @@ struct tipc_node *tipc_node_create(u32 addr)
         spin_lock_init(&n_ptr->lock);
         INIT_HLIST_NODE(&n_ptr->hash);
         INIT_LIST_HEAD(&n_ptr->list);
-        INIT_LIST_HEAD(&n_ptr->nsub);
+        INIT_LIST_HEAD(&n_ptr->publ_list);
         INIT_LIST_HEAD(&n_ptr->conn_sks);
-        __skb_queue_head_init(&n_ptr->waiting_sks);
+        skb_queue_head_init(&n_ptr->waiting_sks);
+        __skb_queue_head_init(&n_ptr->bclink.deferred_queue);
 
         hlist_add_head_rcu(&n_ptr->hash, &node_htable[tipc_hashfn(addr)]);
 
@@ -375,8 +382,7 @@ static void node_lost_contact(struct tipc_node *n_ptr)
 
         /* Flush broadcast link info associated with lost node */
         if (n_ptr->bclink.recv_permitted) {
-                kfree_skb_list(n_ptr->bclink.deferred_head);
-                n_ptr->bclink.deferred_size = 0;
+                __skb_queue_purge(&n_ptr->bclink.deferred_queue);
 
                 if (n_ptr->bclink.reasm_buf) {
                         kfree_skb(n_ptr->bclink.reasm_buf);
@@ -568,7 +574,7 @@ void tipc_node_unlock(struct tipc_node *node)
                 skb_queue_splice_init(&node->waiting_sks, &waiting_sks);
 
         if (flags & TIPC_NOTIFY_NODE_DOWN) {
-                list_replace_init(&node->nsub, &nsub_list);
+                list_replace_init(&node->publ_list, &nsub_list);
                 list_replace_init(&node->conn_sks, &conn_sks);
         }
         node->action_flags &= ~(TIPC_WAKEUP_USERS | TIPC_NOTIFY_NODE_DOWN |
@@ -585,7 +591,7 @@ void tipc_node_unlock(struct tipc_node *node)
                 tipc_node_abort_sock_conns(&conn_sks);
 
         if (!list_empty(&nsub_list))
-                tipc_nodesub_notify(&nsub_list);
+                tipc_publ_notify(&nsub_list, addr);
 
         if (flags & TIPC_WAKEUP_BCAST_USERS)
                 tipc_bclink_wakeup_users();
@@ -601,3 +607,93 @@ void tipc_node_unlock(struct tipc_node *node)
                 tipc_nametbl_withdraw(TIPC_LINK_STATE, addr,
                                       link_id, addr);
 }
+
+/* Caller should hold node lock for the passed node */
+static int __tipc_nl_add_node(struct tipc_nl_msg *msg, struct tipc_node *node)
+{
+        void *hdr;
+        struct nlattr *attrs;
+
+        hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_v2_family,
+                          NLM_F_MULTI, TIPC_NL_NODE_GET);
+        if (!hdr)
+                return -EMSGSIZE;
+
+        attrs = nla_nest_start(msg->skb, TIPC_NLA_NODE);
+        if (!attrs)
+                goto msg_full;
+
+        if (nla_put_u32(msg->skb, TIPC_NLA_NODE_ADDR, node->addr))
+                goto attr_msg_full;
+        if (tipc_node_is_up(node))
+                if (nla_put_flag(msg->skb, TIPC_NLA_NODE_UP))
+                        goto attr_msg_full;
+
+        nla_nest_end(msg->skb, attrs);
+        genlmsg_end(msg->skb, hdr);
+
+        return 0;
+
+attr_msg_full:
+        nla_nest_cancel(msg->skb, attrs);
+msg_full:
+        genlmsg_cancel(msg->skb, hdr);
+
+        return -EMSGSIZE;
+}
+
+int tipc_nl_node_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+        int err;
+        int done = cb->args[0];
+        int last_addr = cb->args[1];
+        struct tipc_node *node;
+        struct tipc_nl_msg msg;
+
+        if (done)
+                return 0;
+
+        msg.skb = skb;
+        msg.portid = NETLINK_CB(cb->skb).portid;
+        msg.seq = cb->nlh->nlmsg_seq;
+
+        rcu_read_lock();
+
+        if (last_addr && !tipc_node_find(last_addr)) {
+                rcu_read_unlock();
+                /* We never set seq or call nl_dump_check_consistent() this
+                 * means that setting prev_seq here will cause the consistence
+                 * check to fail in the netlink callback handler. Resulting in
+                 * the NLMSG_DONE message having the NLM_F_DUMP_INTR flag set if
+                 * the node state changed while we released the lock.
+                 */
+                cb->prev_seq = 1;
+                return -EPIPE;
+        }
+
+        list_for_each_entry_rcu(node, &tipc_node_list, list) {
+                if (last_addr) {
+                        if (node->addr == last_addr)
+                                last_addr = 0;
+                        else
+                                continue;
+                }
+
+                tipc_node_lock(node);
+                err = __tipc_nl_add_node(&msg, node);
+                if (err) {
+                        last_addr = node->addr;
+                        tipc_node_unlock(node);
+                        goto out;
+                }
+
+                tipc_node_unlock(node);
+        }
+        done = 1;
+out:
+        cb->args[0] = done;
+        cb->args[1] = last_addr;
+        rcu_read_unlock();
+
+        return skb->len;
+}