Correct .gbs.conf settings

[platform/adaptation/renesas_rcar/renesas_kernel.git] / net / ipv6 / ip6_output.c

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 16f91a2..12f7ef0 100644 (file)
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -344,12 +344,16 @@ static unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst)
 
 static bool ip6_pkt_too_big(const struct sk_buff *skb, unsigned int mtu)
 {
-       if (skb->len <= mtu || skb->local_df)
+       if (skb->len <= mtu)
                return false;
 
+       /* ipv6 conntrack defrag sets max_frag_size + local_df */
        if (IP6CB(skb)->frag_max_size && IP6CB(skb)->frag_max_size > mtu)
                return true;
 
+       if (skb->local_df)
+               return false;
+
        if (skb_is_gso(skb) && skb_gso_network_seglen(skb) <= mtu)
                return false;
 
@@ -533,6 +537,20 @@ static void ip6_copy_metadata(struct sk_buff *to, struct sk_buff *from)
        skb_copy_secmark(to, from);
 }
 
+static void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
+{
+       static u32 ip6_idents_hashrnd __read_mostly;
+       u32 hash, id;
+
+       net_get_random_once(&ip6_idents_hashrnd, sizeof(ip6_idents_hashrnd));
+
+       hash = __ipv6_addr_jhash(&rt->rt6i_dst.addr, ip6_idents_hashrnd);
+       hash = __ipv6_addr_jhash(&rt->rt6i_src.addr, hash);
+
+       id = ip_idents_reserve(hash, 1);
+       fhdr->identification = htonl(id);
+}
+
 int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
 {
        struct sk_buff *frag;
@@ -990,7 +1008,7 @@ struct dst_entry *ip6_dst_lookup_flow(struct sock *sk, struct flowi6 *fl6,
        if (final_dst)
                fl6->daddr = *final_dst;
 
-       return xfrm_lookup(sock_net(sk), dst, flowi6_to_flowi(fl6), sk, 0);
+       return xfrm_lookup_route(sock_net(sk), dst, flowi6_to_flowi(fl6), sk, 0);
 }
 EXPORT_SYMBOL_GPL(ip6_dst_lookup_flow);
 
@@ -1022,7 +1040,7 @@ struct dst_entry *ip6_sk_dst_lookup_flow(struct sock *sk, struct flowi6 *fl6,
        if (final_dst)
                fl6->daddr = *final_dst;
 
-       return xfrm_lookup(sock_net(sk), dst, flowi6_to_flowi(fl6), sk, 0);
+       return xfrm_lookup_route(sock_net(sk), dst, flowi6_to_flowi(fl6), sk, 0);
 }
 EXPORT_SYMBOL_GPL(ip6_sk_dst_lookup_flow);
 
@@ -1101,21 +1119,19 @@ static void ip6_append_data_mtu(unsigned int *mtu,
                                unsigned int fragheaderlen,
                                struct sk_buff *skb,
                                struct rt6_info *rt,
-                               bool pmtuprobe)
+                               unsigned int orig_mtu)
 {
        if (!(rt->dst.flags & DST_XFRM_TUNNEL)) {
                if (skb == NULL) {
                        /* first fragment, reserve header_len */
-                       *mtu = *mtu - rt->dst.header_len;
+                       *mtu = orig_mtu - rt->dst.header_len;
 
                } else {
                        /*
                         * this fragment is not first, the headers
                         * space is regarded as data space.
                         */
-                       *mtu = min(*mtu, pmtuprobe ?
-                                  rt->dst.dev->mtu :
-                                  dst_mtu(rt->dst.path));
+                       *mtu = orig_mtu;
                }
                *maxfraglen = ((*mtu - fragheaderlen) & ~7)
                              + fragheaderlen - sizeof(struct frag_hdr);
@@ -1132,7 +1148,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
        struct ipv6_pinfo *np = inet6_sk(sk);
        struct inet_cork *cork;
        struct sk_buff *skb, *skb_prev = NULL;
-       unsigned int maxfraglen, fragheaderlen, mtu;
+       unsigned int maxfraglen, fragheaderlen, mtu, orig_mtu;
        int exthdrlen;
        int dst_exthdrlen;
        int hh_len;
@@ -1214,6 +1230,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
                dst_exthdrlen = 0;
                mtu = cork->fragsize;
        }
+       orig_mtu = mtu;
 
        hh_len = LL_RESERVED_SPACE(rt->dst.dev);
 
@@ -1226,7 +1243,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
                unsigned int maxnonfragsize, headersize;
 
                headersize = sizeof(struct ipv6hdr) +
-                            (opt ? opt->tot_len : 0) +
+                            (opt ? opt->opt_flen + opt->opt_nflen : 0) +
                             (dst_allfrag(&rt->dst) ?
                              sizeof(struct frag_hdr) : 0) +
                             rt->rt6i_nfheader_len;
@@ -1311,8 +1328,7 @@ alloc_new_skb:
                        if (skb == NULL || skb_prev == NULL)
                                ip6_append_data_mtu(&mtu, &maxfraglen,
                                                    fragheaderlen, skb, rt,
-                                                   np->pmtudisc >=
-                                                   IPV6_PMTUDISC_PROBE);
+                                                   orig_mtu);
 
                        skb_prev = skb;
 
@@ -1568,8 +1584,8 @@ int ip6_push_pending_frames(struct sock *sk)
        if (proto == IPPROTO_ICMPV6) {
                struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb));
 
-               ICMP6MSGOUT_INC_STATS_BH(net, idev, icmp6_hdr(skb)->icmp6_type);
-               ICMP6_INC_STATS_BH(net, idev, ICMP6_MIB_OUTMSGS);
+               ICMP6MSGOUT_INC_STATS(net, idev, icmp6_hdr(skb)->icmp6_type);
+               ICMP6_INC_STATS(net, idev, ICMP6_MIB_OUTMSGS);
        }
 
        err = ip6_local_out(skb);