5 files changed, 23 insertions, 13 deletions

diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index 4ed429bd5951..0546a0bc97ea 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -192,14 +192,21 @@ EXPORT_SYMBOL(inet_frag_evictor);
 
 static struct inet_frag_queue *inet_frag_intern(struct netns_frags *nf,
                 struct inet_frag_queue *qp_in, struct inet_frags *f,
-                unsigned int hash, void *arg)
+                void *arg)
 {
         struct inet_frag_queue *qp;
 #ifdef CONFIG_SMP
         struct hlist_node *n;
 #endif
+        unsigned int hash;
 
         write_lock(&f->lock);
+        /*
+         * While we stayed w/o the lock other CPU could update
+         * the rnd seed, so we need to re-calculate the hash
+         * chain. Fortunatelly the qp_in can be used to get one.
+         */
+        hash = f->hashfn(qp_in);
 #ifdef CONFIG_SMP
         /* With SMP race we have to recheck hash table, because
          * such entry could be created on other cpu, while we
@@ -247,7 +254,7 @@ static struct inet_frag_queue *inet_frag_alloc(struct netns_frags *nf,
 }
 
 static struct inet_frag_queue *inet_frag_create(struct netns_frags *nf,
-                struct inet_frags *f, void *arg, unsigned int hash)
+                struct inet_frags *f, void *arg)
 {
         struct inet_frag_queue *q;
 
@@ -255,7 +262,7 @@ static struct inet_frag_queue *inet_frag_create(struct netns_frags *nf,
         if (q == NULL)
                 return NULL;
 
-        return inet_frag_intern(nf, q, f, hash, arg);
+        return inet_frag_intern(nf, q, f, arg);
 }
 
 struct inet_frag_queue *inet_frag_find(struct netns_frags *nf,
@@ -264,7 +271,6 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags *nf,
         struct inet_frag_queue *q;
         struct hlist_node *n;
 
-        read_lock(&f->lock);
         hlist_for_each_entry(q, n, &f->hash[hash], list) {
                 if (q->net == nf && f->match(q, key)) {
                         atomic_inc(&q->refcnt);
@@ -274,6 +280,6 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags *nf,
         }
         read_unlock(&f->lock);
 
-        return inet_frag_create(nf, f, key, hash);
+        return inet_frag_create(nf, f, key);
 }
 EXPORT_SYMBOL(inet_frag_find);
diff --git a/net/ipv4/inet_lro.c b/net/ipv4/inet_lro.c
index 4a4d49fca1f2..cfd034a2b96e 100644
--- a/net/ipv4/inet_lro.c
+++ b/net/ipv4/inet_lro.c
@@ -383,8 +383,7 @@ static int __lro_proc_skb(struct net_lro_mgr *lro_mgr, struct sk_buff *skb,
 out2: /* send aggregated SKBs to stack */
         lro_flush(lro_mgr, lro_desc);
 
-out:  /* Original SKB has to be posted to stack */
-        skb->ip_summed = lro_mgr->ip_summed;
+out:
         return 1;
 }
 
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 91e321407313..fbd5804b5d83 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -227,6 +227,8 @@ static inline struct ipq *ip_find(struct net *net, struct iphdr *iph, u32 user)
 
         arg.iph = iph;
         arg.user = user;
+
+        read_lock(&ip4_frags.lock);
         hash = ipqhashfn(iph->id, iph->saddr, iph->daddr, iph->protocol);
 
         q = inet_frag_find(&net->ipv4.frags, &ip4_frags, &arg, hash);
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index cf0850c068f5..c66ac83316e8 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -258,6 +258,8 @@
 #include <linux/socket.h>
 #include <linux/random.h>
 #include <linux/bootmem.h>
+#include <linux/highmem.h>
+#include <linux/swap.h>
 #include <linux/cache.h>
 #include <linux/err.h>
 #include <linux/crypto.h>
@@ -2688,7 +2690,7 @@ __setup("thash_entries=", set_thash_entries);
 void __init tcp_init(void)
 {
         struct sk_buff *skb = NULL;
-        unsigned long limit;
+        unsigned long nr_pages, limit;
         int order, i, max_share;
 
         BUILD_BUG_ON(sizeof(struct tcp_skb_cb) > sizeof(skb->cb));
@@ -2757,8 +2759,9 @@ void __init tcp_init(void)
          * is up to 1/2 at 256 MB, decreasing toward zero with the amount of
          * memory, with a floor of 128 pages.
          */
-        limit = min(nr_all_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
-        limit = (limit * (nr_all_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
+        nr_pages = totalram_pages - totalhigh_pages;
+        limit = min(nr_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
+        limit = (limit * (nr_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
         limit = max(limit, 128UL);
         sysctl_tcp_mem[0] = limit / 4 * 3;
         sysctl_tcp_mem[1] = limit;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 0db9b75c1fa2..4300bcf2ceaf 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2189,7 +2189,7 @@ static void get_tcp4_sock(struct sock *sk, struct seq_file *f, int i, int *len)
         }
 
         seq_printf(f, "%4d: %08X:%04X %08X:%04X %02X %08X:%08X %02X:%08lX "
-                        "%08X %5d %8d %lu %d %p %u %u %u %u %d%n",
+                        "%08X %5d %8d %lu %d %p %lu %lu %u %u %d%n",
                 i, src, srcp, dest, destp, sk->sk_state,
                 tp->write_seq - tp->snd_una,
                 sk->sk_state == TCP_LISTEN ? sk->sk_ack_backlog :
@@ -2201,8 +2201,8 @@ static void get_tcp4_sock(struct sock *sk, struct seq_file *f, int i, int *len)
                 icsk->icsk_probes_out,
                 sock_i_ino(sk),
                 atomic_read(&sk->sk_refcnt), sk,
-                icsk->icsk_rto,
-                icsk->icsk_ack.ato,
+                jiffies_to_clock_t(icsk->icsk_rto),
+                jiffies_to_clock_t(icsk->icsk_ack.ato),
                 (icsk->icsk_ack.quick << 1) | icsk->icsk_ack.pingpong,
                 tp->snd_cwnd,
                 tp->snd_ssthresh >= 0xFFFF ? -1 : tp->snd_ssthresh,