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

Pull networking updates from David Miller:

 1) Seccomp BPF filters can now be JIT'd, from Alexei Starovoitov.

 2) Multiqueue support in xen-netback and xen-netfront, from Andrew J
    Benniston.

 3) Allow tweaking of aggregation settings in cdc_ncm driver, from Bjørn
    Mork.

 4) BPF now has a "random" opcode, from Chema Gonzalez.

 5) Add more BPF documentation and improve test framework, from Daniel
    Borkmann.

 6) Support TCP fastopen over ipv6, from Daniel Lee.

 7) Add software TSO helper functions and use them to support software
    TSO in mvneta and mv643xx_eth drivers.  From Ezequiel Garcia.

 8) Support software TSO in fec driver too, from Nimrod Andy.

 9) Add Broadcom SYSTEMPORT driver, from Florian Fainelli.

10) Handle broadcasts more gracefully over macvlan when there are large
    numbers of interfaces configured, from Herbert Xu.

11) Allow more control over fwmark used for non-socket based responses,
    from Lorenzo Colitti.

12) Do TCP congestion window limiting based upon measurements, from Neal
    Cardwell.

13) Support busy polling in SCTP, from Neal Horman.

14) Allow RSS key to be configured via ethtool, from Venkata Duvvuru.

15) Bridge promisc mode handling improvements from Vlad Yasevich.

16) Don't use inetpeer entries to implement ID generation any more, it
    performs poorly, from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1522 commits)
  rtnetlink: fix userspace API breakage for iproute2 < v3.9.0
  tcp: fixing TLP's FIN recovery
  net: fec: Add software TSO support
  net: fec: Add Scatter/gather support
  net: fec: Increase buffer descriptor entry number
  net: fec: Factorize feature setting
  net: fec: Enable IP header hardware checksum
  net: fec: Factorize the .xmit transmit function
  bridge: fix compile error when compiling without IPv6 support
  bridge: fix smatch warning / potential null pointer dereference
  via-rhine: fix full-duplex with autoneg disable
  bnx2x: Enlarge the dorq threshold for VFs
  bnx2x: Check for UNDI in uncommon branch
  bnx2x: Fix 1G-baseT link
  bnx2x: Fix link for KR with swapped polarity lane
  sctp: Fix sk_ack_backlog wrap-around problem
  net/core: Add VF link state control policy
  net/fsl: xgmac_mdio is dependent on OF_MDIO
  net/fsl: Make xgmac_mdio read error message useful
  net_sched: drr: warn when qdisc is not work conserving
  ...

1 files changed, 80 insertions, 30 deletions

diff --git a/net/tipc/node.c b/net/tipc/node.c
index 1d3a4999a70f..5b44c3041be4 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -108,7 +108,7 @@ struct tipc_node *tipc_node_create(u32 addr)
                         break;
         }
         list_add_tail_rcu(&n_ptr->list, &temp_node->list);
-        n_ptr->block_setup = WAIT_PEER_DOWN;
+        n_ptr->action_flags = TIPC_WAIT_PEER_LINKS_DOWN;
         n_ptr->signature = INVALID_NODE_SIG;
 
         tipc_num_nodes++;
@@ -144,11 +144,13 @@ void tipc_node_stop(void)
 void tipc_node_link_up(struct tipc_node *n_ptr, struct tipc_link *l_ptr)
 {
         struct tipc_link **active = &n_ptr->active_links[0];
+        u32 addr = n_ptr->addr;
 
         n_ptr->working_links++;
-
+        tipc_nametbl_publish(TIPC_LINK_STATE, addr, addr, TIPC_NODE_SCOPE,
+                             l_ptr->bearer_id, addr);
         pr_info("Established link <%s> on network plane %c\n",
-                l_ptr->name, l_ptr->b_ptr->net_plane);
+                l_ptr->name, l_ptr->net_plane);
 
         if (!active[0]) {
                 active[0] = active[1] = l_ptr;
@@ -203,16 +205,18 @@ static void node_select_active_links(struct tipc_node *n_ptr)
 void tipc_node_link_down(struct tipc_node *n_ptr, struct tipc_link *l_ptr)
 {
         struct tipc_link **active;
+        u32 addr = n_ptr->addr;
 
         n_ptr->working_links--;
+        tipc_nametbl_withdraw(TIPC_LINK_STATE, addr, l_ptr->bearer_id, addr);
 
         if (!tipc_link_is_active(l_ptr)) {
                 pr_info("Lost standby link <%s> on network plane %c\n",
-                        l_ptr->name, l_ptr->b_ptr->net_plane);
+                        l_ptr->name, l_ptr->net_plane);
                 return;
         }
         pr_info("Lost link <%s> on network plane %c\n",
-                l_ptr->name, l_ptr->b_ptr->net_plane);
+                l_ptr->name, l_ptr->net_plane);
 
         active = &n_ptr->active_links[0];
         if (active[0] == l_ptr)
@@ -239,7 +243,7 @@ int tipc_node_is_up(struct tipc_node *n_ptr)
 
 void tipc_node_attach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr)
 {
-        n_ptr->links[l_ptr->b_ptr->identity] = l_ptr;
+        n_ptr->links[l_ptr->bearer_id] = l_ptr;
         spin_lock_bh(&node_list_lock);
         tipc_num_links++;
         spin_unlock_bh(&node_list_lock);
@@ -263,26 +267,12 @@ void tipc_node_detach_link(struct tipc_node *n_ptr, struct tipc_link *l_ptr)
 
 static void node_established_contact(struct tipc_node *n_ptr)
 {
-        tipc_k_signal((Handler)tipc_named_node_up, n_ptr->addr);
+        n_ptr->action_flags |= TIPC_NOTIFY_NODE_UP;
         n_ptr->bclink.oos_state = 0;
         n_ptr->bclink.acked = tipc_bclink_get_last_sent();
         tipc_bclink_add_node(n_ptr->addr);
 }
 
-static void node_name_purge_complete(unsigned long node_addr)
-{
-        struct tipc_node *n_ptr;
-
-        read_lock_bh(&tipc_net_lock);
-        n_ptr = tipc_node_find(node_addr);
-        if (n_ptr) {
-                tipc_node_lock(n_ptr);
-                n_ptr->block_setup &= ~WAIT_NAMES_GONE;
-                tipc_node_unlock(n_ptr);
-        }
-        read_unlock_bh(&tipc_net_lock);
-}
-
 static void node_lost_contact(struct tipc_node *n_ptr)
 {
         char addr_string[16];
@@ -296,10 +286,9 @@ static void node_lost_contact(struct tipc_node *n_ptr)
                 kfree_skb_list(n_ptr->bclink.deferred_head);
                 n_ptr->bclink.deferred_size = 0;
 
-                if (n_ptr->bclink.reasm_head) {
-                        kfree_skb(n_ptr->bclink.reasm_head);
-                        n_ptr->bclink.reasm_head = NULL;
-                        n_ptr->bclink.reasm_tail = NULL;
+                if (n_ptr->bclink.reasm_buf) {
+                        kfree_skb(n_ptr->bclink.reasm_buf);
+                        n_ptr->bclink.reasm_buf = NULL;
                 }
 
                 tipc_bclink_remove_node(n_ptr->addr);
@@ -318,12 +307,13 @@ static void node_lost_contact(struct tipc_node *n_ptr)
                 tipc_link_reset_fragments(l_ptr);
         }
 
-        /* Notify subscribers */
-        tipc_nodesub_notify(n_ptr);
+        n_ptr->action_flags &= ~TIPC_WAIT_OWN_LINKS_DOWN;
 
-        /* Prevent re-contact with node until cleanup is done */
-        n_ptr->block_setup = WAIT_PEER_DOWN | WAIT_NAMES_GONE;
-        tipc_k_signal((Handler)node_name_purge_complete, n_ptr->addr);
+        /* Notify subscribers and prevent re-contact with node until
+         * cleanup is done.
+         */
+        n_ptr->action_flags |= TIPC_WAIT_PEER_LINKS_DOWN |
+                               TIPC_NOTIFY_NODE_DOWN;
 }
 
 struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space)
@@ -436,3 +426,63 @@ struct sk_buff *tipc_node_get_links(const void *req_tlv_area, int req_tlv_space)
         rcu_read_unlock();
         return buf;
 }
+
+/**
+ * tipc_node_get_linkname - get the name of a link
+ *
+ * @bearer_id: id of the bearer
+ * @node: peer node address
+ * @linkname: link name output buffer
+ *
+ * Returns 0 on success
+ */
+int tipc_node_get_linkname(u32 bearer_id, u32 addr, char *linkname, size_t len)
+{
+        struct tipc_link *link;
+        struct tipc_node *node = tipc_node_find(addr);
+
+        if ((bearer_id >= MAX_BEARERS) || !node)
+                return -EINVAL;
+        tipc_node_lock(node);
+        link = node->links[bearer_id];
+        if (link) {
+                strncpy(linkname, link->name, len);
+                tipc_node_unlock(node);
+                return 0;
+        }
+        tipc_node_unlock(node);
+        return -EINVAL;
+}
+
+void tipc_node_unlock(struct tipc_node *node)
+{
+        LIST_HEAD(nsub_list);
+        struct tipc_link *link;
+        int pkt_sz = 0;
+        u32 addr = 0;
+
+        if (likely(!node->action_flags)) {
+                spin_unlock_bh(&node->lock);
+                return;
+        }
+
+        if (node->action_flags & TIPC_NOTIFY_NODE_DOWN) {
+                list_replace_init(&node->nsub, &nsub_list);
+                node->action_flags &= ~TIPC_NOTIFY_NODE_DOWN;
+        }
+        if (node->action_flags & TIPC_NOTIFY_NODE_UP) {
+                link = node->active_links[0];
+                node->action_flags &= ~TIPC_NOTIFY_NODE_UP;
+                if (link) {
+                        pkt_sz = ((link->max_pkt - INT_H_SIZE) / ITEM_SIZE) *
+                                  ITEM_SIZE;
+                        addr = node->addr;
+                }
+        }
+        spin_unlock_bh(&node->lock);
+
+        if (!list_empty(&nsub_list))
+                tipc_nodesub_notify(&nsub_list);
+        if (pkt_sz)
+                tipc_named_node_up(pkt_sz, addr);
+}