1 files changed, 47 insertions, 16 deletions

diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index 53553c99cad6..ed6cc8962d87 100644
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -30,7 +30,7 @@ struct dccp_hdr {
 #else
 #error  "Adjust your <asm/byteorder.h> defines"
 #endif
-        __u16   dccph_checksum;
+        __sum16 dccph_checksum;
 #if defined(__LITTLE_ENDIAN_BITFIELD)
         __u8    dccph_x:1,
                 dccph_type:4,
@@ -175,17 +175,21 @@ enum {
         DCCPC_CCID3 = 3,
 };
 
-/* DCCP features */
-enum {
-        DCCPF_RESERVED = 0,
-        DCCPF_CCID = 1,
-        DCCPF_SEQUENCE_WINDOW = 3,
-        DCCPF_ACK_RATIO = 5,
-        DCCPF_SEND_ACK_VECTOR = 6,
-        DCCPF_SEND_NDP_COUNT = 7,
-        /* 10-127 reserved */
-        DCCPF_MIN_CCID_SPECIFIC = 128,
-        DCCPF_MAX_CCID_SPECIFIC = 255,
+/* DCCP features (RFC 4340 section 6.4) */
+ enum {
+        DCCPF_RESERVED = 0,
+        DCCPF_CCID = 1,
+        DCCPF_SHORT_SEQNOS = 2,         /* XXX: not yet implemented */
+        DCCPF_SEQUENCE_WINDOW = 3,
+        DCCPF_ECN_INCAPABLE = 4,        /* XXX: not yet implemented */
+        DCCPF_ACK_RATIO = 5,
+        DCCPF_SEND_ACK_VECTOR = 6,
+        DCCPF_SEND_NDP_COUNT = 7,
+        DCCPF_MIN_CSUM_COVER = 8,
+        DCCPF_DATA_CHECKSUM = 9,        /* XXX: not yet implemented */
+        /* 10-127 reserved */
+        DCCPF_MIN_CCID_SPECIFIC = 128,
+        DCCPF_MAX_CCID_SPECIFIC = 255,
 };
 
 /* this structure is argument to DCCP_SOCKOPT_CHANGE_X */
@@ -196,13 +200,16 @@ struct dccp_so_feat {
 };
 
 /* DCCP socket options */
-#define DCCP_SOCKOPT_PACKET_SIZE        1
+#define DCCP_SOCKOPT_PACKET_SIZE        1 /* XXX deprecated, without effect */
 #define DCCP_SOCKOPT_SERVICE            2
 #define DCCP_SOCKOPT_CHANGE_L           3
 #define DCCP_SOCKOPT_CHANGE_R           4
+#define DCCP_SOCKOPT_SEND_CSCOV         10
+#define DCCP_SOCKOPT_RECV_CSCOV         11
 #define DCCP_SOCKOPT_CCID_RX_INFO       128
 #define DCCP_SOCKOPT_CCID_TX_INFO       192
 
+/* maximum number of services provided on the same listening port */
 #define DCCP_SERVICE_LIST_MAX_LEN      32
 
 #ifdef __KERNEL__
@@ -256,6 +263,13 @@ static inline struct dccp_hdr *dccp_hdr(const struct sk_buff *skb)
         return (struct dccp_hdr *)skb->h.raw;
 }
 
+static inline struct dccp_hdr *dccp_zeroed_hdr(struct sk_buff *skb, int headlen)
+{
+        skb->h.raw = skb_push(skb, headlen);
+        memset(skb->h.raw, 0, headlen);
+        return dccp_hdr(skb);
+}
+
 static inline struct dccp_hdr_ext *dccp_hdrx(const struct sk_buff *skb)
 {
         return (struct dccp_hdr_ext *)(skb->h.raw + sizeof(struct dccp_hdr));
@@ -342,6 +356,9 @@ static inline unsigned int dccp_hdr_len(const struct sk_buff *skb)
   * @dccpms_ccid - Congestion Control Id (CCID) (section 10)
   * @dccpms_send_ack_vector - Send Ack Vector Feature (section 11.5)
   * @dccpms_send_ndp_count - Send NDP Count Feature (7.7.2)
+  * @dccpms_ack_ratio - Ack Ratio Feature (section 11.3)
+  * @dccpms_pending - List of features being negotiated
+  * @dccpms_conf -
   */
 struct dccp_minisock {
         __u64                   dccpms_sequence_window;
@@ -439,12 +456,25 @@ struct dccp_ackvec;
  * @dccps_gss - greatest sequence number sent
  * @dccps_gsr - greatest valid sequence number received
  * @dccps_gar - greatest valid ack number received on a non-Sync; initialized to %dccps_iss
+ * @dccps_service - first (passive sock) or unique (active sock) service code
+ * @dccps_service_list - second .. last service code on passive socket
  * @dccps_timestamp_time - time of latest TIMESTAMP option
  * @dccps_timestamp_echo - latest timestamp received on a TIMESTAMP option
- * @dccps_packet_size - Set thru setsockopt
- * @dccps_role - Role of this sock, one of %dccp_role
+ * @dccps_l_ack_ratio -
+ * @dccps_r_ack_ratio -
+ * @dccps_pcslen - sender   partial checksum coverage (via sockopt)
+ * @dccps_pcrlen - receiver partial checksum coverage (via sockopt)
  * @dccps_ndp_count - number of Non Data Packets since last data packet
+ * @dccps_mss_cache -
+ * @dccps_minisock -
  * @dccps_hc_rx_ackvec - rx half connection ack vector
+ * @dccps_hc_rx_ccid -
+ * @dccps_hc_tx_ccid -
+ * @dccps_options_received -
+ * @dccps_epoch -
+ * @dccps_role - Role of this sock, one of %dccp_role
+ * @dccps_hc_rx_insert_options -
+ * @dccps_hc_tx_insert_options -
  * @dccps_xmit_timer - timer for when CCID is not ready to send
  */
 struct dccp_sock {
@@ -464,9 +494,10 @@ struct dccp_sock {
         struct dccp_service_list        *dccps_service_list;
         struct timeval                  dccps_timestamp_time;
         __u32                           dccps_timestamp_echo;
-        __u32                           dccps_packet_size;
         __u16                           dccps_l_ack_ratio;
         __u16                           dccps_r_ack_ratio;
+        __u16                           dccps_pcslen;
+        __u16                           dccps_pcrlen;
         unsigned long                   dccps_ndp_count;
         __u32                           dccps_mss_cache;
         struct dccp_minisock            dccps_minisock;