#ifndef _LINUX_DCCP_H
#define _LINUX_DCCP_H
-#include <linux/types.h>
-#include <asm/byteorder.h>
-
-/**
- * struct dccp_hdr - generic part of DCCP packet header
- *
- * @dccph_sport - Relevant port on the endpoint that sent this packet
- * @dccph_dport - Relevant port on the other endpoint
- * @dccph_doff - Data Offset from the start of the DCCP header, in 32-bit words
- * @dccph_ccval - Used by the HC-Sender CCID
- * @dccph_cscov - Parts of the packet that are covered by the Checksum field
- * @dccph_checksum - Internet checksum, depends on dccph_cscov
- * @dccph_x - 0 = 24 bit sequence number, 1 = 48
- * @dccph_type - packet type, see DCCP_PKT_ prefixed macros
- * @dccph_seq - sequence number high or low order 24 bits, depends on dccph_x
- */
-struct dccp_hdr {
- __be16 dccph_sport,
- dccph_dport;
- __u8 dccph_doff;
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- __u8 dccph_cscov:4,
- dccph_ccval:4;
-#elif defined(__BIG_ENDIAN_BITFIELD)
- __u8 dccph_ccval:4,
- dccph_cscov:4;
-#else
-#error "Adjust your <asm/byteorder.h> defines"
-#endif
- __sum16 dccph_checksum;
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- __u8 dccph_x:1,
- dccph_type:4,
- dccph_reserved:3;
-#elif defined(__BIG_ENDIAN_BITFIELD)
- __u8 dccph_reserved:3,
- dccph_type:4,
- dccph_x:1;
-#else
-#error "Adjust your <asm/byteorder.h> defines"
-#endif
- __u8 dccph_seq2;
- __be16 dccph_seq;
-};
-
-/**
- * struct dccp_hdr_ext - the low bits of a 48 bit seq packet
- *
- * @dccph_seq_low - low 24 bits of a 48 bit seq packet
- */
-struct dccp_hdr_ext {
- __be32 dccph_seq_low;
-};
-
-/**
- * struct dccp_hdr_request - Connection initiation request header
- *
- * @dccph_req_service - Service to which the client app wants to connect
- */
-struct dccp_hdr_request {
- __be32 dccph_req_service;
-};
-/**
- * struct dccp_hdr_ack_bits - acknowledgment bits common to most packets
- *
- * @dccph_resp_ack_nr_high - 48 bit ack number high order bits, contains GSR
- * @dccph_resp_ack_nr_low - 48 bit ack number low order bits, contains GSR
- */
-struct dccp_hdr_ack_bits {
- __be16 dccph_reserved1;
- __be16 dccph_ack_nr_high;
- __be32 dccph_ack_nr_low;
-};
-/**
- * struct dccp_hdr_response - Connection initiation response header
- *
- * @dccph_resp_ack - 48 bit Acknowledgment Number Subheader (5.3)
- * @dccph_resp_service - Echoes the Service Code on a received DCCP-Request
- */
-struct dccp_hdr_response {
- struct dccp_hdr_ack_bits dccph_resp_ack;
- __be32 dccph_resp_service;
-};
-
-/**
- * struct dccp_hdr_reset - Unconditionally shut down a connection
- *
- * @dccph_reset_ack - 48 bit Acknowledgment Number Subheader (5.6)
- * @dccph_reset_code - one of %dccp_reset_codes
- * @dccph_reset_data - the Data 1 ... Data 3 fields from 5.6
- */
-struct dccp_hdr_reset {
- struct dccp_hdr_ack_bits dccph_reset_ack;
- __u8 dccph_reset_code,
- dccph_reset_data[3];
-};
-
-enum dccp_pkt_type {
- DCCP_PKT_REQUEST = 0,
- DCCP_PKT_RESPONSE,
- DCCP_PKT_DATA,
- DCCP_PKT_ACK,
- DCCP_PKT_DATAACK,
- DCCP_PKT_CLOSEREQ,
- DCCP_PKT_CLOSE,
- DCCP_PKT_RESET,
- DCCP_PKT_SYNC,
- DCCP_PKT_SYNCACK,
- DCCP_PKT_INVALID,
-};
-
-#define DCCP_NR_PKT_TYPES DCCP_PKT_INVALID
-
-static inline unsigned int dccp_packet_hdr_len(const __u8 type)
-{
- if (type == DCCP_PKT_DATA)
- return 0;
- if (type == DCCP_PKT_DATAACK ||
- type == DCCP_PKT_ACK ||
- type == DCCP_PKT_SYNC ||
- type == DCCP_PKT_SYNCACK ||
- type == DCCP_PKT_CLOSE ||
- type == DCCP_PKT_CLOSEREQ)
- return sizeof(struct dccp_hdr_ack_bits);
- if (type == DCCP_PKT_REQUEST)
- return sizeof(struct dccp_hdr_request);
- if (type == DCCP_PKT_RESPONSE)
- return sizeof(struct dccp_hdr_response);
- return sizeof(struct dccp_hdr_reset);
-}
-enum dccp_reset_codes {
- DCCP_RESET_CODE_UNSPECIFIED = 0,
- DCCP_RESET_CODE_CLOSED,
- DCCP_RESET_CODE_ABORTED,
- DCCP_RESET_CODE_NO_CONNECTION,
- DCCP_RESET_CODE_PACKET_ERROR,
- DCCP_RESET_CODE_OPTION_ERROR,
- DCCP_RESET_CODE_MANDATORY_ERROR,
- DCCP_RESET_CODE_CONNECTION_REFUSED,
- DCCP_RESET_CODE_BAD_SERVICE_CODE,
- DCCP_RESET_CODE_TOO_BUSY,
- DCCP_RESET_CODE_BAD_INIT_COOKIE,
- DCCP_RESET_CODE_AGGRESSION_PENALTY,
-
- DCCP_MAX_RESET_CODES /* Leave at the end! */
-};
-
-/* DCCP options */
-enum {
- DCCPO_PADDING = 0,
- 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,
- DCCPO_TIMESTAMP = 41,
- 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,
-};
-/* maximum size of a single TLV-encoded DCCP option (sans type/len bytes) */
-#define DCCP_SINGLE_OPT_MAXLEN 253
-
-/* DCCP CCIDS */
-enum {
- DCCPC_CCID2 = 2,
- DCCPC_CCID3 = 3,
-};
-
-/* DCCP features (RFC 4340 section 6.4) */
-enum dccp_feature_numbers {
- DCCPF_RESERVED = 0,
- DCCPF_CCID = 1,
- DCCPF_SHORT_SEQNOS = 2,
- DCCPF_SEQUENCE_WINDOW = 3,
- DCCPF_ECN_INCAPABLE = 4,
- DCCPF_ACK_RATIO = 5,
- DCCPF_SEND_ACK_VECTOR = 6,
- DCCPF_SEND_NDP_COUNT = 7,
- DCCPF_MIN_CSUM_COVER = 8,
- DCCPF_DATA_CHECKSUM = 9,
- /* 10-127 reserved */
- DCCPF_MIN_CCID_SPECIFIC = 128,
- DCCPF_SEND_LEV_RATE = 192, /* RFC 4342, sec. 8.4 */
- 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_CHANGE_L 3
-#define DCCP_SOCKOPT_CHANGE_R 4
-#define DCCP_SOCKOPT_GET_CUR_MPS 5
-#define DCCP_SOCKOPT_SERVER_TIMEWAIT 6
-#define DCCP_SOCKOPT_SEND_CSCOV 10
-#define DCCP_SOCKOPT_RECV_CSCOV 11
-#define DCCP_SOCKOPT_AVAILABLE_CCIDS 12
-#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
-
-/* maximum number of services provided on the same listening port */
-#define DCCP_SERVICE_LIST_MAX_LEN 32
-
-#ifdef __KERNEL__
#include <linux/in.h>
#include <linux/interrupt.h>
#include <net/inet_sock.h>
#include <net/inet_timewait_sock.h>
#include <net/tcp_states.h>
+#include <uapi/linux/dccp.h>
enum dccp_state {
DCCP_OPEN = TCP_ESTABLISHED,
extern void dccp_syn_ack_timeout(struct sock *sk, struct request_sock *req);
-#endif /* __KERNEL__ */
-
#endif /* _LINUX_DCCP_H */
projects / firefly-linux-kernel-4.4.55.git / blobdiff