dccp: Upgrade NDP count from 3 to 6 bytes

RFC 4340, 7.7 specifies up to 6 bytes for the NDP Count option, whereas the code
is currently limited to up to 3 bytes. This seems to be a relict of an earlier 
draft version and is brought up to date by the patch.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>

1 files changed, 2 insertions, 4 deletions

diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index aa0737019e37..6080449fbec9 100644
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -364,8 +364,6 @@ static inline unsigned int dccp_hdr_len(const struct sk_buff *skb)
 /* FIXME: for now we're default to 1 but it should really be 0 */
 #define DCCPF_INITIAL_SEND_NDP_COUNT            1
 
-#define DCCP_NDP_LIMIT 0xFFFFFF
-
 /**
   * struct dccp_minisock - Minimal DCCP connection representation
   *
@@ -437,7 +435,7 @@ extern int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
                               struct sk_buff *skb);
 
 struct dccp_options_received {
-        u32     dccpor_ndp; /* only 24 bits */
+        u64     dccpor_ndp:48;
         u32     dccpor_timestamp;
         u32     dccpor_timestamp_echo;
         u32     dccpor_elapsed_time;
@@ -533,7 +531,7 @@ struct dccp_sock {
         __u16                           dccps_r_ack_ratio;
         __u16                           dccps_pcslen;
         __u16                           dccps_pcrlen;
-        unsigned long                   dccps_ndp_count;
+        __u64                           dccps_ndp_count:48;
         unsigned long                   dccps_rate_last;
         struct dccp_minisock            dccps_minisock;
         struct dccp_ackvec              *dccps_hc_rx_ackvec;