diff options
author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-07-27 22:07:53 +0000 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-07-27 22:07:53 +0000 |
commit | 4fbe7358c7747a9165f776eb19addbb9baf7def2 (patch) | |
tree | bc7076b4f6d10c2cc2942539bb666e50f0b66954 /libdde_linux26/contrib/include/linux/dccp.h | |
parent | 21adb5284111190057db245cfc2b54091920c373 (diff) |
rename libdde_linux26 into libdde-linux26 to make dpkg-source happy
Diffstat (limited to 'libdde_linux26/contrib/include/linux/dccp.h')
-rw-r--r-- | libdde_linux26/contrib/include/linux/dccp.h | 567 |
1 files changed, 0 insertions, 567 deletions
diff --git a/libdde_linux26/contrib/include/linux/dccp.h b/libdde_linux26/contrib/include/linux/dccp.h deleted file mode 100644 index 61734e27..00000000 --- a/libdde_linux26/contrib/include/linux/dccp.h +++ /dev/null @@ -1,567 +0,0 @@ -#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_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 - -/* 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 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_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/ktime.h> -#include <linux/list.h> -#include <linux/uio.h> -#include <linux/workqueue.h> - -#include <net/inet_connection_sock.h> -#include <net/inet_sock.h> -#include <net/inet_timewait_sock.h> -#include <net/tcp_states.h> - -enum dccp_state { - DCCP_OPEN = TCP_ESTABLISHED, - DCCP_REQUESTING = TCP_SYN_SENT, - DCCP_LISTEN = TCP_LISTEN, - DCCP_RESPOND = TCP_SYN_RECV, - /* - * States involved in closing a DCCP connection: - * 1) ACTIVE_CLOSEREQ is entered by a server sending a CloseReq. - * - * 2) CLOSING can have three different meanings (RFC 4340, 8.3): - * a. Client has performed active-close, has sent a Close to the server - * from state OPEN or PARTOPEN, and is waiting for the final Reset - * (in this case, SOCK_DONE == 1). - * b. Client is asked to perform passive-close, by receiving a CloseReq - * in (PART)OPEN state. It sends a Close and waits for final Reset - * (in this case, SOCK_DONE == 0). - * c. Server performs an active-close as in (a), keeps TIMEWAIT state. - * - * 3) The following intermediate states are employed to give passively - * closing nodes a chance to process their unread data: - * - PASSIVE_CLOSE (from OPEN => CLOSED) and - * - PASSIVE_CLOSEREQ (from (PART)OPEN to CLOSING; case (b) above). - */ - DCCP_ACTIVE_CLOSEREQ = TCP_FIN_WAIT1, - DCCP_PASSIVE_CLOSE = TCP_CLOSE_WAIT, /* any node receiving a Close */ - DCCP_CLOSING = TCP_CLOSING, - DCCP_TIME_WAIT = TCP_TIME_WAIT, - DCCP_CLOSED = TCP_CLOSE, - DCCP_PARTOPEN = TCP_MAX_STATES, - DCCP_PASSIVE_CLOSEREQ, /* clients receiving CloseReq */ - DCCP_MAX_STATES -}; - -#define DCCP_STATE_MASK 0x1f - -enum { - DCCPF_OPEN = TCPF_ESTABLISHED, - DCCPF_REQUESTING = TCPF_SYN_SENT, - DCCPF_LISTEN = TCPF_LISTEN, - DCCPF_RESPOND = TCPF_SYN_RECV, - DCCPF_ACTIVE_CLOSEREQ = TCPF_FIN_WAIT1, - DCCPF_CLOSING = TCPF_CLOSING, - DCCPF_TIME_WAIT = TCPF_TIME_WAIT, - DCCPF_CLOSED = TCPF_CLOSE, - DCCPF_PARTOPEN = (1 << DCCP_PARTOPEN), -}; - -static inline struct dccp_hdr *dccp_hdr(const struct sk_buff *skb) -{ - return (struct dccp_hdr *)skb_transport_header(skb); -} - -static inline struct dccp_hdr *dccp_zeroed_hdr(struct sk_buff *skb, int headlen) -{ - skb_push(skb, headlen); - skb_reset_transport_header(skb); - return memset(skb_transport_header(skb), 0, headlen); -} - -static inline struct dccp_hdr_ext *dccp_hdrx(const struct dccp_hdr *dh) -{ - return (struct dccp_hdr_ext *)((unsigned char *)dh + sizeof(*dh)); -} - -static inline unsigned int __dccp_basic_hdr_len(const struct dccp_hdr *dh) -{ - return sizeof(*dh) + (dh->dccph_x ? sizeof(struct dccp_hdr_ext) : 0); -} - -static inline unsigned int dccp_basic_hdr_len(const struct sk_buff *skb) -{ - const struct dccp_hdr *dh = dccp_hdr(skb); - return __dccp_basic_hdr_len(dh); -} - -static inline __u64 dccp_hdr_seq(const struct dccp_hdr *dh) -{ - __u64 seq_nr = ntohs(dh->dccph_seq); - - if (dh->dccph_x != 0) - seq_nr = (seq_nr << 32) + ntohl(dccp_hdrx(dh)->dccph_seq_low); - else - seq_nr += (u32)dh->dccph_seq2 << 16; - - return seq_nr; -} - -static inline struct dccp_hdr_request *dccp_hdr_request(struct sk_buff *skb) -{ - return (struct dccp_hdr_request *)(skb_transport_header(skb) + - dccp_basic_hdr_len(skb)); -} - -static inline struct dccp_hdr_ack_bits *dccp_hdr_ack_bits(const struct sk_buff *skb) -{ - return (struct dccp_hdr_ack_bits *)(skb_transport_header(skb) + - dccp_basic_hdr_len(skb)); -} - -static inline u64 dccp_hdr_ack_seq(const struct sk_buff *skb) -{ - const struct dccp_hdr_ack_bits *dhack = dccp_hdr_ack_bits(skb); - return ((u64)ntohs(dhack->dccph_ack_nr_high) << 32) + ntohl(dhack->dccph_ack_nr_low); -} - -static inline struct dccp_hdr_response *dccp_hdr_response(struct sk_buff *skb) -{ - return (struct dccp_hdr_response *)(skb_transport_header(skb) + - dccp_basic_hdr_len(skb)); -} - -static inline struct dccp_hdr_reset *dccp_hdr_reset(struct sk_buff *skb) -{ - return (struct dccp_hdr_reset *)(skb_transport_header(skb) + - dccp_basic_hdr_len(skb)); -} - -static inline unsigned int __dccp_hdr_len(const struct dccp_hdr *dh) -{ - return __dccp_basic_hdr_len(dh) + - dccp_packet_hdr_len(dh->dccph_type); -} - -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 -/* 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 - * @dreq_iss: initial sequence number sent on the Response (RFC 4340, 7.1) - * @dreq_isr: initial sequence number received on the Request - * @dreq_service: service code present on the Request (there is just one) - * @dreq_featneg: feature negotiation options for this connection - * The following two fields are analogous to the ones in dccp_sock: - * @dreq_timestamp_echo: last received timestamp to echo (13.1) - * @dreq_timestamp_echo: the time of receiving the last @dreq_timestamp_echo - */ -struct dccp_request_sock { - struct inet_request_sock dreq_inet_rsk; - __u64 dreq_iss; - __u64 dreq_isr; - __be32 dreq_service; - struct list_head dreq_featneg; - __u32 dreq_timestamp_echo; - __u32 dreq_timestamp_time; -}; - -static inline struct dccp_request_sock *dccp_rsk(const struct request_sock *req) -{ - return (struct dccp_request_sock *)req; -} - -extern struct inet_timewait_death_row dccp_death_row; - -extern int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq, - struct sk_buff *skb); - -struct dccp_options_received { - u64 dccpor_ndp:48; - u32 dccpor_timestamp; - u32 dccpor_timestamp_echo; - u32 dccpor_elapsed_time; -}; - -struct ccid; - -enum dccp_role { - DCCP_ROLE_UNDEFINED, - DCCP_ROLE_LISTEN, - DCCP_ROLE_CLIENT, - DCCP_ROLE_SERVER, -}; - -struct dccp_service_list { - __u32 dccpsl_nr; - __be32 dccpsl_list[0]; -}; - -#define DCCP_SERVICE_INVALID_VALUE htonl((__u32)-1) -#define DCCP_SERVICE_CODE_IS_ABSENT 0 - -static inline int dccp_list_has_service(const struct dccp_service_list *sl, - const __be32 service) -{ - if (likely(sl != NULL)) { - u32 i = sl->dccpsl_nr; - while (i--) - if (sl->dccpsl_list[i] == service) - return 1; - } - return 0; -} - -struct dccp_ackvec; - -/** - * struct dccp_sock - DCCP socket state - * - * @dccps_swl - sequence number window low - * @dccps_swh - sequence number window high - * @dccps_awl - acknowledgement number window low - * @dccps_awh - acknowledgement number window high - * @dccps_iss - initial sequence number sent - * @dccps_isr - initial sequence number received - * @dccps_osr - first OPEN sequence number received - * @dccps_gss - greatest sequence number sent - * @dccps_gsr - greatest valid sequence number received - * @dccps_gar - greatest valid ack number received on a non-Sync; initialized to %dccps_iss - * @dccps_service - first (passive sock) or unique (active sock) service code - * @dccps_service_list - second .. last service code on passive socket - * @dccps_timestamp_echo - latest timestamp received on a TIMESTAMP option - * @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_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_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_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 { - /* inet_connection_sock has to be the first member of dccp_sock */ - struct inet_connection_sock dccps_inet_connection; -#define dccps_syn_rtt dccps_inet_connection.icsk_ack.lrcvtime - __u64 dccps_swl; - __u64 dccps_swh; - __u64 dccps_awl; - __u64 dccps_awh; - __u64 dccps_iss; - __u64 dccps_isr; - __u64 dccps_osr; - __u64 dccps_gss; - __u64 dccps_gsr; - __u64 dccps_gar; - __be32 dccps_service; - __u32 dccps_mss_cache; - struct dccp_service_list *dccps_service_list; - __u32 dccps_timestamp_echo; - __u32 dccps_timestamp_time; - __u16 dccps_l_ack_ratio; - __u16 dccps_r_ack_ratio; - __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; - 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; - struct timer_list dccps_xmit_timer; -}; - -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) { - case DCCP_ROLE_UNDEFINED: return "undefined"; - case DCCP_ROLE_LISTEN: return "listen"; - case DCCP_ROLE_SERVER: return "server"; - case DCCP_ROLE_CLIENT: return "client"; - } - return NULL; -} - -#endif /* __KERNEL__ */ - -#endif /* _LINUX_DCCP_H */ |