Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / net / sched / act_nat.c

diff --git a/kernel/net/sched/act_nat.c b/kernel/net/sched/act_nat.c
index 270a030..27607b8 100644 (file)
--- a/kernel/net/sched/act_nat.c
+++ b/kernel/net/sched/act_nat.c
@@ -55,7 +55,8 @@ static int tcf_nat_init(struct net *net, struct nlattr *nla, struct nlattr *est,
        parm = nla_data(tb[TCA_NAT_PARMS]);
 
        if (!tcf_hash_check(parm->index, a, bind)) {
-               ret = tcf_hash_create(parm->index, est, a, sizeof(*p), bind);
+               ret = tcf_hash_create(parm->index, est, a, sizeof(*p),
+                                     bind, false);
                if (ret)
                        return ret;
                ret = ACT_P_CREATED;
@@ -125,9 +126,7 @@ static int tcf_nat(struct sk_buff *skb, const struct tc_action *a,
                addr = iph->daddr;
 
        if (!((old_addr ^ addr) & mask)) {
-               if (skb_cloned(skb) &&
-                   !skb_clone_writable(skb, sizeof(*iph) + noff) &&
-                   pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
+               if (skb_try_make_writable(skb, sizeof(*iph) + noff))
                        goto drop;
 
                new_addr &= mask;
@@ -155,13 +154,12 @@ static int tcf_nat(struct sk_buff *skb, const struct tc_action *a,
                struct tcphdr *tcph;
 
                if (!pskb_may_pull(skb, ihl + sizeof(*tcph) + noff) ||
-                   (skb_cloned(skb) &&
-                    !skb_clone_writable(skb, ihl + sizeof(*tcph) + noff) &&
-                    pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
+                   skb_try_make_writable(skb, ihl + sizeof(*tcph) + noff))
                        goto drop;
 
                tcph = (void *)(skb_network_header(skb) + ihl);
-               inet_proto_csum_replace4(&tcph->check, skb, addr, new_addr, 1);
+               inet_proto_csum_replace4(&tcph->check, skb, addr, new_addr,
+                                        true);
                break;
        }
        case IPPROTO_UDP:
@@ -169,15 +167,13 @@ static int tcf_nat(struct sk_buff *skb, const struct tc_action *a,
                struct udphdr *udph;
 
                if (!pskb_may_pull(skb, ihl + sizeof(*udph) + noff) ||
-                   (skb_cloned(skb) &&
-                    !skb_clone_writable(skb, ihl + sizeof(*udph) + noff) &&
-                    pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
+                   skb_try_make_writable(skb, ihl + sizeof(*udph) + noff))
                        goto drop;
 
                udph = (void *)(skb_network_header(skb) + ihl);
                if (udph->check || skb->ip_summed == CHECKSUM_PARTIAL) {
                        inet_proto_csum_replace4(&udph->check, skb, addr,
-                                                new_addr, 1);
+                                                new_addr, true);
                        if (!udph->check)
                                udph->check = CSUM_MANGLED_0;
                }
@@ -211,10 +207,8 @@ static int tcf_nat(struct sk_buff *skb, const struct tc_action *a,
                if ((old_addr ^ addr) & mask)
                        break;
 
-               if (skb_cloned(skb) &&
-                   !skb_clone_writable(skb, ihl + sizeof(*icmph) +
-                                            sizeof(*iph) + noff) &&
-                   pskb_expand_head(skb, 0, 0, GFP_ATOMIC))
+               if (skb_try_make_writable(skb, ihl + sizeof(*icmph) +
+                                         sizeof(*iph) + noff))
                        goto drop;
 
                icmph = (void *)(skb_network_header(skb) + ihl);
@@ -230,7 +224,7 @@ static int tcf_nat(struct sk_buff *skb, const struct tc_action *a,
                        iph->saddr = new_addr;
 
                inet_proto_csum_replace4(&icmph->checksum, skb, addr, new_addr,
-                                        0);
+                                        false);
                break;
        }
        default: