net: rename local_df to ignore_df

As suggested by several people, rename local_df to ignore_df,
since it means "ignore df bit if it is set".

Cc: Maciej Żenczykowski <maze@google.com>
Cc: Florian Westphal <fw@strlen.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 9 insertions, 9 deletions

diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c
index 6f111e48e11c..3a83ce5efa80 100644
--- a/net/ipv4/ip_forward.c
+++ b/net/ipv4/ip_forward.c
@@ -42,7 +42,7 @@
 static bool ip_may_fragment(const struct sk_buff *skb)
 {
         return unlikely((ip_hdr(skb)->frag_off & htons(IP_DF)) == 0) ||
-                skb->local_df;
+                skb->ignore_df;
 }
 
 static bool ip_exceeds_mtu(const struct sk_buff *skb, unsigned int mtu)
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index a52f50187b54..6aa4380fde1a 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -415,7 +415,7 @@ packet_routed:
         skb_reset_network_header(skb);
         iph = ip_hdr(skb);
         *((__be16 *)iph) = htons((4 << 12) | (5 << 8) | (inet->tos & 0xff));
-        if (ip_dont_fragment(sk, &rt->dst) && !skb->local_df)
+        if (ip_dont_fragment(sk, &rt->dst) && !skb->ignore_df)
                 iph->frag_off = htons(IP_DF);
         else
                 iph->frag_off = 0;
@@ -501,7 +501,7 @@ int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
         iph = ip_hdr(skb);
 
         mtu = ip_skb_dst_mtu(skb);
-        if (unlikely(((iph->frag_off & htons(IP_DF)) && !skb->local_df) ||
+        if (unlikely(((iph->frag_off & htons(IP_DF)) && !skb->ignore_df) ||
                      (IPCB(skb)->frag_max_size &&
                       IPCB(skb)->frag_max_size > mtu))) {
                 IP_INC_STATS(dev_net(dev), IPSTATS_MIB_FRAGFAILS);
@@ -866,7 +866,7 @@ static int __ip_append_data(struct sock *sk,
 
         fragheaderlen = sizeof(struct iphdr) + (opt ? opt->optlen : 0);
         maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen;
-        maxnonfragsize = ip_sk_local_df(sk) ? 0xFFFF : mtu;
+        maxnonfragsize = ip_sk_ignore_df(sk) ? 0xFFFF : mtu;
 
         if (cork->length + length > maxnonfragsize - fragheaderlen) {
                 ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport,
@@ -1189,7 +1189,7 @@ ssize_t	ip_append_page(struct sock *sk, struct flowi4 *fl4, struct page *page,
 
         fragheaderlen = sizeof(struct iphdr) + (opt ? opt->optlen : 0);
         maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen;
-        maxnonfragsize = ip_sk_local_df(sk) ? 0xFFFF : mtu;
+        maxnonfragsize = ip_sk_ignore_df(sk) ? 0xFFFF : mtu;
 
         if (cork->length + size > maxnonfragsize - fragheaderlen) {
                 ip_local_error(sk, EMSGSIZE, fl4->daddr, inet->inet_dport,
@@ -1350,10 +1350,10 @@ struct sk_buff *__ip_make_skb(struct sock *sk,
          * to fragment the frame generated here. No matter, what transforms
          * how transforms change size of the packet, it will come out.
          */
-        skb->local_df = ip_sk_local_df(sk);
+        skb->ignore_df = ip_sk_ignore_df(sk);
 
         /* DF bit is set when we want to see DF on outgoing frames.
-         * If local_df is set too, we still allow to fragment this frame
+         * If ignore_df is set too, we still allow to fragment this frame
          * locally. */
         if (inet->pmtudisc == IP_PMTUDISC_DO ||
             inet->pmtudisc == IP_PMTUDISC_PROBE ||
diff --git a/net/ipv4/netfilter/nf_defrag_ipv4.c b/net/ipv4/netfilter/nf_defrag_ipv4.c
index f40f321b41fc..b8f6381c7d0b 100644
--- a/net/ipv4/netfilter/nf_defrag_ipv4.c
+++ b/net/ipv4/netfilter/nf_defrag_ipv4.c
@@ -34,7 +34,7 @@ static int nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user)
 
         if (!err) {
                 ip_send_check(ip_hdr(skb));
-                skb->local_df = 1;
+                skb->ignore_df = 1;
         }
 
         return err;
diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
index 40e701f2e1e0..8e8c018d9d2d 100644
--- a/net/ipv4/xfrm4_output.c
+++ b/net/ipv4/xfrm4_output.c
@@ -25,7 +25,7 @@ static int xfrm4_tunnel_check_size(struct sk_buff *skb)
         if (IPCB(skb)->flags & IPSKB_XFRM_TUNNEL_SIZE)
                 goto out;
 
-        if (!(ip_hdr(skb)->frag_off & htons(IP_DF)) || skb->local_df)
+        if (!(ip_hdr(skb)->frag_off & htons(IP_DF)) || skb->ignore_df)
                 goto out;
 
         mtu = dst_mtu(skb_dst(skb));