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
DCCPF_MAX_CCID_SPECIFIC = 255,
};
-/* DCCP socket control message types for cmsg */
-enum dccp_cmsg_type {
- DCCP_SCM_PRIORITY = 1,
- DCCP_SCM_QPOLICY_MAX = 0xFFFF,
- /* ^-- Up to here reserved exclusively for qpolicy parameters */
- DCCP_SCM_MAX
-};
-
-/* DCCP priorities for outgoing/queued packets */
-enum dccp_packet_dequeueing_policy {
- DCCPQ_POLICY_SIMPLE,
- DCCPQ_POLICY_PRIO,
- DCCPQ_POLICY_MAX
-};
-
/* DCCP socket options */
#define DCCP_SOCKOPT_PACKET_SIZE 1 /* XXX deprecated, without effect */
#define DCCP_SOCKOPT_SERVICE 2
#define DCCP_SOCKOPT_CCID 13
#define DCCP_SOCKOPT_TX_CCID 14
#define DCCP_SOCKOPT_RX_CCID 15
-#define DCCP_SOCKOPT_QPOLICY_ID 16
-#define DCCP_SOCKOPT_QPOLICY_TXQLEN 17
#define DCCP_SOCKOPT_CCID_RX_INFO 128
#define DCCP_SOCKOPT_CCID_TX_INFO 192
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
+/* 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_pending - List of features being negotiated
+ * @dccpms_conf -
+ */
+struct dccp_minisock {
+ __u64 dccpms_sequence_window;
+ 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
* @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)
* @dccps_hc_tx_ccid - CCID used for the sender (or sending half-connection)
* @dccps_options_received - parsed set of retrieved options
- * @dccps_qpolicy - TX dequeueing policy, one of %dccp_packet_dequeueing_policy
- * @dccps_tx_qlen - maximum length of the TX queue
* @dccps_role - role of this sock, one of %dccp_role
* @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 {
__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;
struct ccid *dccps_hc_tx_ccid;
struct dccp_options_received dccps_options_received;
- __u8 dccps_qpolicy;
- __u32 dccps_tx_qlen;
enum dccp_role dccps_role:2;
__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;
};
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) {