[IP_SOCKGLUE]: Remove most of the tcp specific calls

As DCCP needs to be called in the same spots.

Now we have a member in inet_sock (is_icsk), set at sock creation time from
struct inet_protosw->flags (if INET_PROTOSW_ICSK is set, like for TCP and
DCCP) to see if a struct sock instance is a inet_connection_sock for places
like the ones in ip_sockglue.c (v4 and v6) where we previously were looking if
sk_type was SOCK_STREAM, that is insufficient because we now use the same code
for DCCP, that has sk_type SOCK_DCCP.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 2 insertions, 6 deletions

diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index 71fab4311e92..d0bdb499cf8d 100644
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -408,8 +408,6 @@ struct dccp_ackvec;
  * @dccps_gar - greatest valid ack number received on a non-Sync; initialized to %dccps_iss
  * @dccps_timestamp_time - time of latest TIMESTAMP option
  * @dccps_timestamp_echo - latest timestamp received on a TIMESTAMP option
- * @dccps_ext_header_len - network protocol overhead (IP/IPv6 options)
- * @dccps_pmtu_cookie - Last pmtu seen by socket
  * @dccps_packet_size - Set thru setsockopt
  * @dccps_role - Role of this sock, one of %dccp_role
  * @dccps_ndp_count - number of Non Data Packets since last data packet
@@ -434,8 +432,6 @@ struct dccp_sock {
         __u32                           dccps_timestamp_echo;
         __u32                           dccps_packet_size;
         unsigned long                   dccps_ndp_count;
-        __u16                           dccps_ext_header_len;
-        __u32                           dccps_pmtu_cookie;
         __u32                           dccps_mss_cache;
         struct dccp_options             dccps_options;
         struct dccp_ackvec              *dccps_hc_rx_ackvec;
diff --git a/include/linux/ip.h b/include/linux/ip.h
index 5a560daeade5..6ccc596c19c8 100644
--- a/include/linux/ip.h
+++ b/include/linux/ip.h
@@ -155,6 +155,7 @@ struct inet_sock {
         __u8                    mc_ttl;         /* Multicasting TTL */
         __u8                    pmtudisc;
         unsigned                recverr : 1,
+                                is_icsk : 1,    /* inet_connection_sock? */
                                 freebind : 1,
                                 hdrincl : 1,
                                 mc_loop : 1;
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index da38eea1994b..f2bb2396853f 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -238,10 +238,9 @@ struct tcp_sock {
         __u32   snd_wl1;        /* Sequence for window update           */
         __u32   snd_wnd;        /* The window we expect to receive      */
         __u32   max_window;     /* Maximal window ever seen from peer   */
-        __u32   pmtu_cookie;    /* Last pmtu seen by socket             */
         __u32   mss_cache;      /* Cached effective mss, not including SACKS */
         __u16   xmit_size_goal; /* Goal for segmenting output packets   */
-        __u16   ext_header_len; /* Network protocol overhead (IP/IPv6 options) */
+        /* XXX Two bytes hole, try to pack */
 
         __u32   window_clamp;   /* Maximal window to advertise          */
         __u32   rcv_ssthresh;   /* Current window clamp                 */