[DCCP]: Initial feature negotiation implementation

[net-next-2.6.git] / include / linux / dccp.h

diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index 268b4579d7e5daf68529ea02ed3d437fdaa114a1..f91c8a62406d30e3d4bb0f04c1ad08d9ab6a4557 100644 (file)
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -154,6 +154,10 @@ enum {
        DCCPO_MANDATORY = 1,
        DCCPO_MIN_RESERVED = 3,
        DCCPO_MAX_RESERVED = 31,
+       DCCPO_CHANGE_L = 32,
+       DCCPO_CONFIRM_L = 33,
+       DCCPO_CHANGE_R = 34,
+       DCCPO_CONFIRM_R = 35,
        DCCPO_NDP_COUNT = 37,
        DCCPO_ACK_VECTOR_0 = 38,
        DCCPO_ACK_VECTOR_1 = 39,
@@ -168,7 +172,9 @@ enum {
 /* 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 */
@@ -176,9 +182,18 @@ enum {
        DCCPF_MAX_CCID_SPECIFIC = 255,
 };
 
+/* this structure is argument to DCCP_SOCKOPT_CHANGE_X */
+struct dccp_so_feat {
+       __u8 dccpsf_feat;
+       __u8 *dccpsf_val;
+       __u8 dccpsf_len;
+};
+
 /* DCCP socket options */
 #define DCCP_SOCKOPT_PACKET_SIZE       1
 #define DCCP_SOCKOPT_SERVICE           2
+#define DCCP_SOCKOPT_CHANGE_L          3
+#define DCCP_SOCKOPT_CHANGE_R          4
 #define DCCP_SOCKOPT_CCID_RX_INFO      128
 #define DCCP_SOCKOPT_CCID_TX_INFO      192
 
@@ -314,8 +329,8 @@ static inline unsigned int dccp_hdr_len(const struct sk_buff *skb)
 
 /* initial values for each feature */
 #define DCCPF_INITIAL_SEQUENCE_WINDOW          100
-/* FIXME: for now we're using CCID 2 (TCP-Like) */
 #define DCCPF_INITIAL_CCID                     2
+#define DCCPF_INITIAL_ACK_RATIO                        2
 #define DCCPF_INITIAL_SEND_ACK_VECTOR          1
 /* FIXME: for now we're default to 1 but it should really be 0 */
 #define DCCPF_INITIAL_SEND_NDP_COUNT           1
@@ -335,6 +350,24 @@ struct dccp_options {
        __u8    dccpo_tx_ccid;
        __u8    dccpo_send_ack_vector;
        __u8    dccpo_send_ndp_count;
+       __u8                    dccpo_ack_ratio;
+       struct list_head        dccpo_pending;
+       struct list_head        dccpo_conf;
+};
+
+struct dccp_opt_conf {
+       __u8                    *dccpoc_val;
+       __u8                    dccpoc_len;
+};
+
+struct dccp_opt_pend {
+       struct list_head        dccpop_node;
+       __u8                    dccpop_type;
+       __u8                    dccpop_feat;
+       __u8                    *dccpop_val;
+       __u8                    dccpop_len;
+       int                     dccpop_conf;
+       struct dccp_opt_conf    *dccpop_sc;
 };
 
 extern void __dccp_options_init(struct dccp_options *dccpo);