[IPV{4,6}]: Add ipfragok arg to ip_queue_xmit.

include/net/ip.h

@@ -96,7 +96,7 @@ extern int		ip_mc_output(struct sk_buff *skb);
 extern int		ip_fragment(struct sk_buff *skb, int (*out)(struct sk_buff*));
 extern int		ip_do_nat(struct sk_buff *skb);
 extern void		ip_send_check(struct iphdr *ip);
-extern int		ip_queue_xmit(struct sk_buff *skb);
+extern int		ip_queue_xmit(struct sk_buff *skb, int ipfragok);
 extern void		ip_init(void);
 extern int		ip_append_data(struct sock *sk,
 				       int getfrag(void *from, char *to, int offset, int len,

include/net/tcp.h

@@ -566,7 +566,8 @@ static inline void tcp_openreq_free(struct open_request *req)
  */
 
 struct tcp_func {
-	int			(*queue_xmit)		(struct sk_buff *skb);
+	int			(*queue_xmit)		(struct sk_buff *skb,
+							 int ipfragok);
 
 	void			(*send_check)		(struct sock *sk,
 							 struct tcphdr *th,

net/ipv4/ip_output.c

@@ -280,7 +280,7 @@ int ip_output(struct sk_buff *skb)
 		return ip_finish_output(skb);
 }
 
-int ip_queue_xmit(struct sk_buff *skb)
+int ip_queue_xmit(struct sk_buff *skb, int ipfragok)
 {
 	struct sock *sk = skb->sk;
 	struct inet_opt *inet = inet_sk(sk);
@@ -337,7 +337,7 @@ int ip_queue_xmit(struct sk_buff *skb)
 	iph = (struct iphdr *) skb_push(skb, sizeof(struct iphdr) + (opt ? opt->optlen : 0));
 	*((__u16 *)iph)	= htons((4 << 12) | (5 << 8) | (inet->tos & 0xff));
 	iph->tot_len = htons(skb->len);
-	if (ip_dont_fragment(sk, &rt->u.dst))
+	if (ip_dont_fragment(sk, &rt->u.dst) && !ipfragok)
 		iph->frag_off = htons(IP_DF);
 	else
 		iph->frag_off = 0;

net/ipv4/tcp_output.c

@@ -276,7 +276,7 @@ int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb)
 
 		TCP_INC_STATS(TcpOutSegs);
 
-		err = tp->af_specific->queue_xmit(skb);
+		err = tp->af_specific->queue_xmit(skb, 0);
 		if (err <= 0)
 			return err;
 

net/ipv6/tcp_ipv6.c

@@ -1746,7 +1746,7 @@ static int tcp_v6_rebuild_header(struct sock *sk)
 	return 0;
 }
 
-static int tcp_v6_xmit(struct sk_buff *skb)
+static int tcp_v6_xmit(struct sk_buff *skb, int ipfragok)
 {
 	struct sock *sk = skb->sk;
 	struct inet_opt *inet = inet_sk(sk);

net/netsyms.c

@@ -248,6 +248,8 @@ EXPORT_SYMBOL(inet_unregister_protosw);
 EXPORT_SYMBOL(ip_route_output_key);
 EXPORT_SYMBOL(ip_route_input);
 EXPORT_SYMBOL(icmp_send);
+EXPORT_SYMBOL(icmp_statistics);
+EXPORT_SYMBOL(icmp_err_convert);
 EXPORT_SYMBOL(ip_options_compile);
 EXPORT_SYMBOL(ip_options_undo);
 EXPORT_SYMBOL(arp_send);