dccp: Remove manual influence on NDP Count feature

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

diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index eed52bcd35d0d7e2e6e0e36e12ac773ada2dbb6d..60e94438eadd4d3c82b7463750381b95c9ce2281 100644 (file)
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -165,10 +165,8 @@ enum {
        DCCPO_TIMESTAMP_ECHO = 42,
        DCCPO_ELAPSED_TIME = 43,
        DCCPO_MAX = 45,
-       DCCPO_MIN_RX_CCID_SPECIFIC = 128,       /* from sender to receiver */
-       DCCPO_MAX_RX_CCID_SPECIFIC = 191,
-       DCCPO_MIN_TX_CCID_SPECIFIC = 192,       /* from receiver to sender */
-       DCCPO_MAX_TX_CCID_SPECIFIC = 255,
+       DCCPO_MIN_CCID_SPECIFIC = 128,
+       DCCPO_MAX_CCID_SPECIFIC = 255,
 };
 /* maximum size of a single TLV-encoded DCCP option (sans type/len bytes) */
 #define DCCP_SINGLE_OPT_MAXLEN 253
@@ -357,6 +355,49 @@ static inline unsigned int dccp_hdr_len(const struct sk_buff *skb)
        return __dccp_hdr_len(dccp_hdr(skb));
 }
 
+
+/* initial values for each feature */
+#define DCCPF_INITIAL_SEQUENCE_WINDOW          100
+#define DCCPF_INITIAL_ACK_RATIO                        2
+#define DCCPF_INITIAL_CCID                     DCCPC_CCID2
+#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
+
+/**
+  * struct dccp_minisock - Minimal DCCP connection representation
+  *
+  * Will be used to pass the state from dccp_request_sock to dccp_sock.
+  *
+  * @dccpms_sequence_window - Sequence Window Feature (section 7.5.2)
+  * @dccpms_send_ack_vector - Send Ack Vector Feature (section 11.5)
+  * @dccpms_pending - List of features being negotiated
+  * @dccpms_conf -
+  */
+struct dccp_minisock {
+       __u64                   dccpms_sequence_window;
+       __u8                    dccpms_send_ack_vector;
+       struct list_head        dccpms_pending;
+       struct list_head        dccpms_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_minisock_init(struct dccp_minisock *dmsk);
+
 /**
  * struct dccp_request_sock  -  represent DCCP-specific connection request
  * @dreq_inet_rsk: structure inherited from
@@ -445,14 +486,13 @@ struct dccp_ackvec;
  * @dccps_timestamp_time - time of receiving latest @dccps_timestamp_echo
  * @dccps_l_ack_ratio - feature-local Ack Ratio
  * @dccps_r_ack_ratio - feature-remote Ack Ratio
- * @dccps_l_seq_win - local Sequence Window (influences ack number validity)
- * @dccps_r_seq_win - remote Sequence Window (influences seq number validity)
  * @dccps_pcslen - sender   partial checksum coverage (via sockopt)
  * @dccps_pcrlen - receiver partial checksum coverage (via sockopt)
  * @dccps_send_ndp_count - local Send NDP Count feature (7.7.2)
  * @dccps_ndp_count - number of Non Data Packets since last data packet
  * @dccps_mss_cache - current value of MSS (path MTU minus header sizes)
  * @dccps_rate_last - timestamp for rate-limiting DCCP-Sync (RFC 4340, 7.5.4)
+ * @dccps_minisock - associated minisock (accessed via dccp_msk)
  * @dccps_featneg - tracks feature-negotiation state (mostly during handshake)
  * @dccps_hc_rx_ackvec - rx half connection ack vector
  * @dccps_hc_rx_ccid - CCID used for the receiver (or receiving half-connection)
@@ -462,9 +502,7 @@ struct dccp_ackvec;
  * @dccps_hc_rx_insert_options - receiver wants to add options when acking
  * @dccps_hc_tx_insert_options - sender wants to add options when sending
  * @dccps_server_timewait - server holds timewait state on close (RFC 4340, 8.3)
- * @dccps_sync_scheduled - flag which signals "send out-of-band message soon"
- * @dccps_xmitlet - tasklet scheduled by the TX CCID to dequeue data packets
- * @dccps_xmit_timer - used by the TX CCID to delay sending (rate-based pacing)
+ * @dccps_xmit_timer - timer for when CCID is not ready to send
  * @dccps_syn_rtt - RTT sample from Request/Response exchange (in usecs)
  */
 struct dccp_sock {
@@ -488,13 +526,12 @@ struct dccp_sock {
        __u32                           dccps_timestamp_time;
        __u16                           dccps_l_ack_ratio;
        __u16                           dccps_r_ack_ratio;
-       __u64                           dccps_l_seq_win:48;
-       __u64                           dccps_r_seq_win:48;
        __u8                            dccps_pcslen:4;
        __u8                            dccps_pcrlen:4;
        __u8                            dccps_send_ndp_count:1;
        __u64                           dccps_ndp_count:48;
        unsigned long                   dccps_rate_last;
+       struct dccp_minisock            dccps_minisock;
        struct list_head                dccps_featneg;
        struct dccp_ackvec              *dccps_hc_rx_ackvec;
        struct ccid                     *dccps_hc_rx_ccid;
@@ -504,8 +541,6 @@ struct dccp_sock {
        __u8                            dccps_hc_rx_insert_options:1;
        __u8                            dccps_hc_tx_insert_options:1;
        __u8                            dccps_server_timewait:1;
-       __u8                            dccps_sync_scheduled:1;
-       struct tasklet_struct           dccps_xmitlet;
        struct timer_list               dccps_xmit_timer;
 };
 
@@ -514,6 +549,11 @@ static inline struct dccp_sock *dccp_sk(const struct sock *sk)
        return (struct dccp_sock *)sk;
 }
 
+static inline struct dccp_minisock *dccp_msk(const struct sock *sk)
+{
+       return (struct dccp_minisock *)&dccp_sk(sk)->dccps_minisock;
+}
+
 static inline const char *dccp_role(const struct sock *sk)
 {
        switch (dccp_sk(sk)->dccps_role) {