5 files changed, 15 insertions, 9 deletions

diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h
index f1a770977c4f..180231c5bbbe 100644
--- a/include/net/inet_timewait_sock.h
+++ b/include/net/inet_timewait_sock.h
@@ -126,7 +126,8 @@ struct inet_timewait_sock {
         /* And these are ours. */
         unsigned int            tw_ipv6only     : 1,
                                 tw_transparent  : 1,
-                                tw_pad          : 14,   /* 14 bits hole */
+                                tw_pad          : 6,    /* 6 bits hole */
+                                tw_tos          : 8,
                                 tw_ipv6_offset  : 16;
         kmemcheck_bitfield_end(flags);
         unsigned long           tw_ttd;
diff --git a/include/net/ip.h b/include/net/ip.h
index c7e066a1c611..eca0ef7a495e 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -165,6 +165,7 @@ struct ip_reply_arg {
         int         csumoffset; /* u16 offset of csum in iov[0].iov_base */
                                 /* -1 if not needed */ 
         int         bound_dev_if;
+        u8          tos;
 }; 
 
 #define IP_REPLY_ARG_NOSRCCHECK 1
@@ -175,7 +176,7 @@ static inline __u8 ip_reply_arg_flowi_flags(const struct ip_reply_arg *arg)
 }
 
 void ip_send_reply(struct sock *sk, struct sk_buff *skb, __be32 daddr,
-                   struct ip_reply_arg *arg, unsigned int len);
+                   const struct ip_reply_arg *arg, unsigned int len);
 
 struct ipv4_config {
         int     log_martians;
diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index 3c8dfa16614d..44d65d546e30 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -183,6 +183,7 @@ struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk, const int stat
                 tw->tw_daddr        = inet->inet_daddr;
                 tw->tw_rcv_saddr    = inet->inet_rcv_saddr;
                 tw->tw_bound_dev_if = sk->sk_bound_dev_if;
+                tw->tw_tos          = inet->tos;
                 tw->tw_num          = inet->inet_num;
                 tw->tw_state        = TCP_TIME_WAIT;
                 tw->tw_substate     = state;
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index e1374ab034bb..0bc95f3977d2 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -1466,7 +1466,7 @@ static int ip_reply_glue_bits(void *dptr, char *to, int offset,
  *      structure to pass arguments.
  */
 void ip_send_reply(struct sock *sk, struct sk_buff *skb, __be32 daddr,
-                   struct ip_reply_arg *arg, unsigned int len)
+                   const struct ip_reply_arg *arg, unsigned int len)
 {
         struct inet_sock *inet = inet_sk(sk);
         struct ip_options_data replyopts;
@@ -1489,7 +1489,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, __be32 daddr,
         }
 
         flowi4_init_output(&fl4, arg->bound_dev_if, 0,
-                           RT_TOS(ip_hdr(skb)->tos),
+                           RT_TOS(arg->tos),
                            RT_SCOPE_UNIVERSE, sk->sk_protocol,
                            ip_reply_arg_flowi_flags(arg),
                            daddr, rt->rt_spec_dst,
@@ -1506,7 +1506,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, __be32 daddr,
            with locally disabled BH and that sk cannot be already spinlocked.
          */
         bh_lock_sock(sk);
-        inet->tos = ip_hdr(skb)->tos;
+        inet->tos = arg->tos;
         sk->sk_priority = skb->priority;
         sk->sk_protocol = ip_hdr(skb)->protocol;
         sk->sk_bound_dev_if = arg->bound_dev_if;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 1dad7e92f005..0ea10eefa60f 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -652,6 +652,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
         arg.flags = (sk && inet_sk(sk)->transparent) ? IP_REPLY_ARG_NOSRCCHECK : 0;
 
         net = dev_net(skb_dst(skb)->dev);
+        arg.tos = ip_hdr(skb)->tos;
         ip_send_reply(net->ipv4.tcp_sock, skb, ip_hdr(skb)->saddr,
                       &arg, arg.iov[0].iov_len);
 
@@ -666,7 +667,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
 static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
                             u32 win, u32 ts, int oif,
                             struct tcp_md5sig_key *key,
-                            int reply_flags)
+                            int reply_flags, u8 tos)
 {
         const struct tcphdr *th = tcp_hdr(skb);
         struct {
@@ -726,7 +727,7 @@ static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
         arg.csumoffset = offsetof(struct tcphdr, check) / 2;
         if (oif)
                 arg.bound_dev_if = oif;
-
+        arg.tos = tos;
         ip_send_reply(net->ipv4.tcp_sock, skb, ip_hdr(skb)->saddr,
                       &arg, arg.iov[0].iov_len);
 
@@ -743,7 +744,8 @@ static void tcp_v4_timewait_ack(struct sock *sk, struct sk_buff *skb)
                         tcptw->tw_ts_recent,
                         tw->tw_bound_dev_if,
                         tcp_twsk_md5_key(tcptw),
-                        tw->tw_transparent ? IP_REPLY_ARG_NOSRCCHECK : 0
+                        tw->tw_transparent ? IP_REPLY_ARG_NOSRCCHECK : 0,
+                        tw->tw_tos
                         );
 
         inet_twsk_put(tw);
@@ -757,7 +759,8 @@ static void tcp_v4_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
                         req->ts_recent,
                         0,
                         tcp_v4_md5_do_lookup(sk, ip_hdr(skb)->daddr),
-                        inet_rsk(req)->no_srccheck ? IP_REPLY_ARG_NOSRCCHECK : 0);
+                        inet_rsk(req)->no_srccheck ? IP_REPLY_ARG_NOSRCCHECK : 0,
+                        ip_hdr(skb)->tos);
 }
 
 /*