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

Quoth David:

1) GRO MAC header comparisons were ethernet specific, breaking other
   link types.  This required a multi-faceted fix to cure the originally
   noted case (Infiniband), because IPoIB was lying about it's actual
   hard header length.  Thanks to Eric Dumazet, Roland Dreier, and
   others.

2) Fix build failure when INET_UDP_DIAG is built in and ipv6 is modular.
   From Anisse Astier.

3) Off by ones and other bug fixes in netprio_cgroup from Neil Horman.

4) ipv4 TCP reset generation needs to respect any network interface
   binding from the socket, otherwise route lookups might give a
   different result than all the other segments received.  From Shawn
   Lu.

5) Fix unintended regression in ipv4 proxy ARP responses, from Thomas
   Graf.

6) Fix SKB under-allocation bug in sh_eth, from Yoshihiro Shimoda.

7) Revert skge PCI mapping changes that are causing crashes for some
   folks, from Stephen Hemminger.

8) IPV4 route lookups fill in the wildcarded fields of the given flow
   lookup key passed in, which is fine most of the time as this is
   exactly what the caller's want.  However there are a few cases that
   want to retain the original flow key values afterwards, so handle
   those cases properly.  Fix from Julian Anastasov.

9) IGB/IXGBE VF lookup bug fixes from Greg Rose.

10) Properly null terminate filename passed to ethtool flash device
    method, from Ben Hutchings.

11) S3 resume fix in via-velocity from David Lv.

12) Fix double SKB free during xmit failure in CAIF, from Dmitry
    Tarnyagin.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (72 commits)
  net: Don't proxy arp respond if iif == rt->dst.dev if private VLAN is disabled
  ipv4: Fix wrong order of ip_rt_get_source() and update iph->daddr.
  netprio_cgroup: fix wrong memory access when NETPRIO_CGROUP=m
  netprio_cgroup: don't allocate prio table when a device is registered
  netprio_cgroup: fix an off-by-one bug
  bna: fix error handling of bnad_get_flash_partition_by_offset()
  isdn: type bug in isdn_net_header()
  net: Make qdisc_skb_cb upper size bound explicit.
  ixgbe: ethtool: stats user buffer overrun
  ixgbe: dcb: up2tc mapping lost on disable/enable CEE DCB state
  ixgbe: do not update real num queues when netdev is going away
  ixgbe: Fix broken dependency on MAX_SKB_FRAGS being related to page size
  ixgbe: Fix case of Tx Hang in PF with 32 VFs
  ixgbe: fix vf lookup
  igb: fix vf lookup
  e1000: add dropped DMA receive enable back in for WoL
  gro: more generic L2 header check
  IPoIB: Stop lying about hard_header_len and use skb->cb to stash LL addresses
  zd1211rw: firmware needs duration_id set to zero for non-pspoll frames
  net: enable TC35815 for MIPS again
  ...

6 files changed, 73 insertions, 14 deletions

diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 62b908e0e591..0ae065a5fcb2 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -35,7 +35,7 @@
 #include <linux/mod_devicetable.h>
 
 
-#define MAX_PAGE_BUFFER_COUNT                           18
+#define MAX_PAGE_BUFFER_COUNT                           19
 #define MAX_MULTIPAGE_BUFFER_COUNT                      32 /* 128K */
 
 #pragma pack(push, 1)
diff --git a/include/net/flow.h b/include/net/flow.h
index 9b582437fbea..6c469dbdb917 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -93,6 +93,16 @@ static inline void flowi4_init_output(struct flowi4 *fl4, int oif,
         fl4->fl4_dport = dport;
         fl4->fl4_sport = sport;
 }
+
+/* Reset some input parameters after previous lookup */
+static inline void flowi4_update_output(struct flowi4 *fl4, int oif, __u8 tos,
+                                        __be32 daddr, __be32 saddr)
+{
+        fl4->flowi4_oif = oif;
+        fl4->flowi4_tos = tos;
+        fl4->daddr = daddr;
+        fl4->saddr = saddr;
+}
                                       
 
 struct flowi6 {
diff --git a/include/net/netprio_cgroup.h b/include/net/netprio_cgroup.h
index 7b2d43139c8e..d58fdec47597 100644
--- a/include/net/netprio_cgroup.h
+++ b/include/net/netprio_cgroup.h
@@ -37,19 +37,51 @@ extern int net_prio_subsys_id;
 
 extern void sock_update_netprioidx(struct sock *sk);
 
-static inline struct cgroup_netprio_state
-                *task_netprio_state(struct task_struct *p)
+#if IS_BUILTIN(CONFIG_NETPRIO_CGROUP)
+
+static inline u32 task_netprioidx(struct task_struct *p)
 {
-#if IS_ENABLED(CONFIG_NETPRIO_CGROUP)
-        return container_of(task_subsys_state(p, net_prio_subsys_id),
-                            struct cgroup_netprio_state, css);
-#else
-        return NULL;
-#endif
+        struct cgroup_netprio_state *state;
+        u32 idx;
+
+        rcu_read_lock();
+        state = container_of(task_subsys_state(p, net_prio_subsys_id),
+                             struct cgroup_netprio_state, css);
+        idx = state->prioidx;
+        rcu_read_unlock();
+        return idx;
+}
+
+#elif IS_MODULE(CONFIG_NETPRIO_CGROUP)
+
+static inline u32 task_netprioidx(struct task_struct *p)
+{
+        struct cgroup_netprio_state *state;
+        int subsys_id;
+        u32 idx = 0;
+
+        rcu_read_lock();
+        subsys_id = rcu_dereference_index_check(net_prio_subsys_id,
+                                                rcu_read_lock_held());
+        if (subsys_id >= 0) {
+                state = container_of(task_subsys_state(p, subsys_id),
+                                     struct cgroup_netprio_state, css);
+                idx = state->prioidx;
+        }
+        rcu_read_unlock();
+        return idx;
 }
 
 #else
 
+static inline u32 task_netprioidx(struct task_struct *p)
+{
+        return 0;
+}
+
+#endif /* CONFIG_NETPRIO_CGROUP */
+
+#else
 #define sock_update_netprioidx(sk)
 #endif
 
diff --git a/include/net/route.h b/include/net/route.h
index 91855d185b53..b1c0d5b564c2 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -270,6 +270,7 @@ static inline struct rtable *ip_route_connect(struct flowi4 *fl4,
                 if (IS_ERR(rt))
                         return rt;
                 ip_rt_put(rt);
+                flowi4_update_output(fl4, oif, tos, fl4->daddr, fl4->saddr);
         }
         security_sk_classify_flow(sk, flowi4_to_flowi(fl4));
         return ip_route_output_flow(net, fl4, sk);
@@ -284,6 +285,9 @@ static inline struct rtable *ip_route_newports(struct flowi4 *fl4, struct rtable
                 fl4->fl4_dport = dport;
                 fl4->fl4_sport = sport;
                 ip_rt_put(rt);
+                flowi4_update_output(fl4, sk->sk_bound_dev_if,
+                                     RT_CONN_FLAGS(sk), fl4->daddr,
+                                     fl4->saddr);
                 security_sk_classify_flow(sk, flowi4_to_flowi(fl4));
                 return ip_route_output_flow(sock_net(sk), fl4, sk);
         }
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index f6bb08b73ca4..55ce96b53b09 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -220,9 +220,16 @@ struct tcf_proto {
 
 struct qdisc_skb_cb {
         unsigned int            pkt_len;
-        long                    data[];
+        unsigned char           data[24];
 };
 
+static inline void qdisc_cb_private_validate(const struct sk_buff *skb, int sz)
+{
+        struct qdisc_skb_cb *qcb;
+        BUILD_BUG_ON(sizeof(skb->cb) < sizeof(unsigned int) + sz);
+        BUILD_BUG_ON(sizeof(qcb->data) < sz);
+}
+
 static inline int qdisc_qlen(const struct Qdisc *q)
 {
         return q->q.qlen;
diff --git a/include/net/tcp.h b/include/net/tcp.h
index d49db0113a06..42c29bfbcee3 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -273,6 +273,14 @@ static inline int between(__u32 seq1, __u32 seq2, __u32 seq3)
         return seq3 - seq2 >= seq1 - seq2;
 }
 
+static inline bool tcp_out_of_memory(struct sock *sk)
+{
+        if (sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
+            sk_memory_allocated(sk) > sk_prot_mem_limits(sk, 2))
+                return true;
+        return false;
+}
+
 static inline bool tcp_too_many_orphans(struct sock *sk, int shift)
 {
         struct percpu_counter *ocp = sk->sk_prot->orphan_count;
@@ -283,13 +291,11 @@ static inline bool tcp_too_many_orphans(struct sock *sk, int shift)
                 if (orphans << shift > sysctl_tcp_max_orphans)
                         return true;
         }
-
-        if (sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
-            sk_memory_allocated(sk) > sk_prot_mem_limits(sk, 2))
-                return true;
         return false;
 }
 
+extern bool tcp_check_oom(struct sock *sk, int shift);
+
 /* syncookies: remember time of last synqueue overflow */
 static inline void tcp_synq_overflow(struct sock *sk)
 {