diff options
Diffstat (limited to 'include/linux/dccp.h')
| -rw-r--r-- | include/linux/dccp.h | 236 |
1 files changed, 1 insertions, 235 deletions
diff --git a/include/linux/dccp.h b/include/linux/dccp.h index d16294e2a118..439ff698000a 100644 --- a/include/linux/dccp.h +++ b/include/linux/dccp.h @@ -1,239 +1,6 @@ #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> @@ -246,6 +13,7 @@ enum dccp_packet_dequeueing_policy { #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, @@ -551,6 +319,4 @@ static inline const char *dccp_role(const struct sock *sk) extern void dccp_syn_ack_timeout(struct sock *sk, struct request_sock *req); -#endif /* __KERNEL__ */ - #endif /* _LINUX_DCCP_H */ |