[HICN-18] first commit of libtransport for windows - hicn - Hybrid Information-Centric Networking

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author	Angelo Mantellini <manangel@cisco.com>	2019-01-30 12:11:34 +0100
committer	Angelo Mantellini <manangel@cisco.com>	2019-01-30 15:23:44 +0100
commit	e5145b878f9de35676085409878a66899d2ee4f2 (patch)
tree	177f77810901921ee03d1d3b850600c5f2cd1ef9 /hicn-plugin/src/faces/ip/dpo_ip.h
parent	30061551cd39c9f30280bfa0cf3cc909f4fac015 (diff)

[HICN-18] first commit of libtransport for windows

Change-Id: I3a43b22194aa13ae5de1746e3d4bd9a275070261 Signed-off-by: Angelo Mantellini <manangel@cisco.com>

Diffstat (limited to 'hicn-plugin/src/faces/ip/dpo_ip.h')

-rw-r--r--[-rwxr-xr-x]

hicn-plugin/src/faces/ip/dpo_ip.h

1 files changed, 0 insertions, 0 deletions

/* * Copyright (c) 2020 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef SRC_VNET_TCP_TCP_TYPES_H_ #define SRC_VNET_TCP_TCP_TYPES_H_ #include <vppinfra/clib.h> #include <vppinfra/rbtree.h> #include <vnet/tcp/tcp_packet.h> #include <vnet/session/transport.h> #define TCP_TICK 0.000001 /**< TCP tick period (s) */ #define THZ (u32) (1/TCP_TICK) /**< TCP tick frequency */ #define TCP_TSTP_TICK 0.001 /**< Timestamp tick (s) */ #define TCP_TSTP_HZ (u32) (1/TCP_TSTP_TICK) /**< Timestamp freq */ #define TCP_PAWS_IDLE (24 * 86400 * TCP_TSTP_HZ)/**< 24 days */ #define TCP_TSTP_TO_HZ (u32) (TCP_TSTP_TICK * THZ) #define TCP_FIB_RECHECK_PERIOD 1 * THZ /**< Recheck every 1s */ #define TCP_MAX_OPTION_SPACE 40 #define TCP_CC_DATA_SZ 24 #define TCP_RXT_MAX_BURST 10 #define TCP_DUPACK_THRESHOLD 3 #define TCP_IW_N_SEGMENTS 10 #define TCP_ALWAYS_ACK 1 /**< On/off delayed acks */ #define TCP_USE_SACKS 1 /**< Disable only for testing */ /** TCP FSM state definitions as per RFC793. */ #define foreach_tcp_fsm_state \ _(CLOSED, "CLOSED") \ _(LISTEN, "LISTEN") \ _(SYN_SENT, "SYN_SENT") \ _(SYN_RCVD, "SYN_RCVD") \ _(ESTABLISHED, "ESTABLISHED") \ _(CLOSE_WAIT, "CLOSE_WAIT") \ _(FIN_WAIT_1, "FIN_WAIT_1") \ _(LAST_ACK, "LAST_ACK") \ _(CLOSING, "CLOSING") \ _(FIN_WAIT_2, "FIN_WAIT_2") \ _(TIME_WAIT, "TIME_WAIT") typedef enum _tcp_state { #define _(sym, str) TCP_STATE_##sym, foreach_tcp_fsm_state #undef _ TCP_N_STATES } tcp_state_t; /** TCP timers */ #define foreach_tcp_timer \ _(RETRANSMIT, "RETRANSMIT") \ _(PERSIST, "PERSIST") \ _(WAITCLOSE, "WAIT CLOSE") \ _(RETRANSMIT_SYN, "RETRANSMIT SYN") \ typedef enum _tcp_timers { #define _(sym, str) TCP_TIMER_##sym, foreach_tcp_timer #undef _ TCP_N_TIMERS } __clib_packed tcp_timers_e; #define TCP_TIMER_HANDLE_INVALID ((u32) ~0) #define TCP_TIMER_TICK 0.0001 /**< Timer tick in seconds */ #define TCP_TO_TIMER_TICK TCP_TICK*10000 /**< Factor for converting ticks to timer ticks */ #define TCP_RTO_MAX 60 * THZ /* Min max RTO (60s) as per RFC6298 */ #define TCP_RTO_MIN 0.2 * THZ /* Min RTO (200ms) - lower than standard */ #define TCP_RTT_MAX 30 * THZ /* 30s (probably too much) */ #define TCP_RTO_SYN_RETRIES 3 /* SYN retries without doubling RTO */ #define TCP_RTO_INIT 1 * THZ /* Initial retransmit timer */ #define TCP_RTO_BOFF_MAX 8 /* Max number of retries before reset */ #define TCP_ESTABLISH_TIME (60 * THZ) /* Connection establish timeout */ /** Connection configuration flags */ #define foreach_tcp_cfg_flag \ _(RATE_SAMPLE, "Rate sampling") \ _(NO_CSUM_OFFLOAD, "No csum offload") \ _(NO_TSO, "TSO off") \ _(TSO, "TSO") \ _(NO_ENDPOINT,"No endpoint") \ typedef enum tcp_cfg_flag_bits_ { #define _(sym, str) TCP_CFG_F_##sym##_BIT, foreach_tcp_cfg_flag #undef _ TCP_CFG_N_FLAG_BITS } tcp_cfg_flag_bits_e; typedef enum tcp_cfg_flag_ { #define _(sym, str) TCP_CFG_F_##sym = 1 << TCP_CFG_F_##sym##_BIT, foreach_tcp_cfg_flag #undef _ TCP_CFG_N_FLAGS } tcp_cfg_flags_e; /** TCP connection flags */ #define foreach_tcp_connection_flag \ _(SNDACK, "Send ACK") \ _(FINSNT, "FIN sent") \ _(RECOVERY, "Recovery") \ _(FAST_RECOVERY, "Fast Recovery") \ _(DCNT_PENDING, "Disconnect pending") \ _(HALF_OPEN_DONE, "Half-open completed") \ _(FINPNDG, "FIN pending") \ _(RXT_PENDING, "Retransmit pending") \ _(FRXT_FIRST, "Retransmit first") \ _(DEQ_PENDING, "Dequeue pending ") \ _(PSH_PENDING, "PSH pending") \ _(FINRCVD, "FIN received") \ _(ZERO_RWND_SENT, "Zero RWND sent") \ typedef enum tcp_connection_flag_bits_ { #define _(sym, str) TCP_CONN_##sym##_BIT, foreach_tcp_connection_flag #undef _ TCP_CONN_N_FLAG_BITS } tcp_connection_flag_bits_e; typedef enum tcp_connection_flag_ { #define _(sym, str) TCP_CONN_##sym = 1 << TCP_CONN_##sym##_BIT, foreach_tcp_connection_flag #undef _ TCP_CONN_N_FLAGS } tcp_connection_flags_e; #define TCP_SCOREBOARD_TRACE (0) #define TCP_MAX_SACK_BLOCKS 255 /**< Max number of SACK blocks stored */ #define TCP_INVALID_SACK_HOLE_INDEX ((u32)~0) #define TCP_MAX_SACK_REORDER 300 typedef struct _scoreboard_trace_elt { u32 start; u32 end; u32 ack; u32 snd_nxt; u32 group; } scoreboard_trace_elt_t; typedef struct _sack_scoreboard_hole { u32 next; /**< Index for next entry in linked list */ u32 prev; /**< Index for previous entry in linked list */ u32 start; /**< Start sequence number */ u32 end; /**< End sequence number */ u8 is_lost; /**< Mark hole as lost */ } sack_scoreboard_hole_t; typedef struct _sack_scoreboard { sack_scoreboard_hole_t *holes; /**< Pool of holes */ u32 head; /**< Index of first entry */ u32 tail; /**< Index of last entry */ u32 sacked_bytes; /**< Number of bytes sacked in sb */ u32 last_sacked_bytes; /**< Number of bytes last sacked */ u32 last_bytes_delivered; /**< Sack bytes delivered to app */ u32 rxt_sacked; /**< Rxt bytes last delivered */ u32 high_sacked; /**< Highest byte sacked (fack) */ u32 high_rxt; /**< Highest retransmitted sequence */ u32 rescue_rxt; /**< Rescue sequence number */ u32 lost_bytes; /**< Bytes lost as per RFC6675 */ u32 last_lost_bytes; /**< Number of bytes last lost */ u32 cur_rxt_hole; /**< Retransmitting from this hole */ u32 reorder; /**< Estimate of segment reordering */ u8 is_reneging; /**< Flag set if peer is reneging*/ #if TCP_SCOREBOARD_TRACE scoreboard_trace_elt_t *trace; #endif } sack_scoreboard_t; #define TCP_BTS_INVALID_INDEX ((u32)~0) typedef enum tcp_bts_flags_ { TCP_BTS_IS_RXT = 1, TCP_BTS_IS_APP_LIMITED = 1 << 1, TCP_BTS_IS_SACKED = 1 << 2, TCP_BTS_IS_RXT_LOST = 1 << 3, } __clib_packed tcp_bts_flags_t; typedef struct tcp_bt_sample_ { u32 next; /**< Next sample index in list */ u32 prev; /**< Previous sample index in list */ u32 min_seq; /**< Min seq number in sample */ u32 max_seq; /**< Max seq number. Set for rxt samples */ u64 delivered; /**< Total delivered bytes for sample */ f64 delivered_time; /**< Delivered time when sample taken */ f64 tx_time; /**< Transmit time for the burst */ f64 first_tx_time; /**< Connection first tx time at tx */ u64 tx_in_flight; /**< In flight at tx time */ u64 tx_lost; /**< Lost at tx time */ tcp_bts_flags_t flags; /**< Sample flag */ } tcp_bt_sample_t; typedef struct tcp_rate_sample_ { u64 prior_delivered; /**< Delivered of sample used for rate, i.e., total bytes delivered at prior_time */ f64 prior_time; /**< Delivered time of sample used for rate */ f64 interval_time; /**< Time to ack the bytes delivered */ f64 rtt_time; /**< RTT for sample */ u64 tx_in_flight; /**< In flight at (re)transmit time */ u64 tx_lost; /**< Lost over interval */ u32 delivered; /**< Bytes delivered in interval_time */ u32 acked_and_sacked; /**< Bytes acked + sacked now */ u32 last_lost; /**< Bytes lost now */ u32 lost; /**< Number of bytes lost over interval */ tcp_bts_flags_t flags; /**< Rate sample flags from bt sample */ } tcp_rate_sample_t; typedef struct tcp_byte_tracker_ { tcp_bt_sample_t *samples; /**< Pool of samples */ rb_tree_t sample_lookup; /**< Rbtree for sample lookup by min_seq */ u32 head; /**< Head of samples linked list */ u32 tail; /**< Tail of samples linked list */ u32 last_ooo; /**< Cached last ooo sample */ } tcp_byte_tracker_t; typedef enum _tcp_cc_algorithm_type { TCP_CC_NEWRENO, TCP_CC_CUBIC, TCP_CC_LAST = TCP_CC_CUBIC } tcp_cc_algorithm_type_e; typedef struct _tcp_cc_algorithm tcp_cc_algorithm_t; typedef enum _tcp_cc_ack_t { TCP_CC_ACK, TCP_CC_DUPACK, TCP_CC_PARTIALACK } tcp_cc_ack_t; typedef enum tcp_cc_event_ { TCP_CC_EVT_START_TX, } tcp_cc_event_t; /* * As per RFC4898 tcpEStatsStackSoftErrors */ typedef struct tcp_errors_ { u32 below_data_wnd; /**< All data in seg is below snd_una */ u32 above_data_wnd; /**< Some data in segment is above snd_wnd */ u32 below_ack_wnd; /**< Acks for data below snd_una */ u32 above_ack_wnd; /**< Acks for data not sent */ } tcp_errors_t; typedef struct _tcp_connection { CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); transport_connection_t connection; /**< Common transport data. First! */ u8 state; /**< TCP state as per tcp_state_t */ u8 cfg_flags; /**< Connection configuration flags */ u16 flags; /**< Connection flags (see tcp_conn_flags_e) */ u32 timers[TCP_N_TIMERS]; /**< Timer handles into timer wheel */ u32 pending_timers; /**< Expired timers not yet handled */ u64 segs_in; /** RFC4022/4898 tcpHCInSegs/tcpEStatsPerfSegsIn */ u64 bytes_in; /** RFC4898 tcpEStatsPerfHCDataOctetsIn */ u64 segs_out; /** RFC4898 tcpEStatsPerfSegsOut */ u64 bytes_out; /** RFC4898 tcpEStatsPerfHCDataOctetsOut */ /** Send sequence variables RFC793 */ u32 snd_una; /**< oldest unacknowledged sequence number */ u32 snd_wnd; /**< send window */ u32 snd_wl1; /**< seq number used for last snd.wnd update */ u32 snd_wl2; /**< ack number used for last snd.wnd update */ u32 snd_nxt; /**< next seq number to be sent */ u16 snd_mss; /**< Effective send max seg (data) size */ u64 data_segs_in; /** RFC4898 tcpEStatsPerfDataSegsIn */ u64 data_segs_out; /** RFC4898 tcpEStatsPerfDataSegsOut */ /** Receive sequence variables RFC793 */ u32 rcv_nxt; /**< next sequence number expected */ u32 rcv_wnd; /**< receive window we expect */ u32 rcv_las; /**< rcv_nxt at last ack sent/rcv_wnd update */ /* Options */ u8 snd_opts_len; /**< Tx options len */ u8 snd_sack_pos; /**< Position in vec of first block to send */ u8 rcv_wscale; /**< Window scale to advertise to peer */ u8 snd_wscale; /**< Window scale to use when sending */ u32 tsval_recent; /**< Last timestamp received */ u32 tsval_recent_age; /**< When last updated tstamp_recent*/ u32 timestamp_delta; /**< Offset for timestamp */ tcp_options_t snd_opts; /**< Tx options for connection */ tcp_options_t rcv_opts; /**< Rx options for connection */ sack_block_t *snd_sacks; /**< Vector of SACKs to send. XXX Fixed size? */ sack_block_t *snd_sacks_fl; /**< Vector for building new list */ sack_scoreboard_t sack_sb; /**< SACK "scoreboard" that tracks holes */ u16 rcv_dupacks; /**< Number of recent DUPACKs received */ u32 dupacks_in; /**< RFC4898 tcpEStatsStackDupAcksIn*/ u8 pending_dupacks; /**< Number of DUPACKs to be sent */ u32 dupacks_out; /**< RFC4898 tcpEStatsPathDupAcksOut */ /* Congestion control */ u32 cwnd; /**< Congestion window */ u32 cwnd_acc_bytes; /**< Bytes accumulated for cwnd increment */ u32 ssthresh; /**< Slow-start threshold */ u32 prev_ssthresh; /**< ssthresh before congestion */ u32 prev_cwnd; /**< ssthresh before congestion */ u32 bytes_acked; /**< Bytes acknowledged by current segment */ u32 burst_acked; /**< Bytes acknowledged in current burst */ u32 snd_rxt_bytes; /**< Retransmitted bytes during current cc event */ u32 snd_rxt_ts; /**< Timestamp when first packet is retransmitted */ u32 prr_delivered; /**< RFC6937 bytes delivered during current event */ u32 prr_start; /**< snd_una when prr starts */ u32 rxt_delivered; /**< Rxt bytes delivered during current cc event */ u32 rxt_head; /**< snd_una last time we re rxted the head */ u32 tsecr_last_ack; /**< Timestamp echoed to us in last healthy ACK */ u32 snd_congestion; /**< snd_nxt when congestion is detected */ u32 tx_fifo_size; /**< Tx fifo size. Used to constrain cwnd */ tcp_cc_algorithm_t *cc_algo; /**< Congestion control algorithm */ u8 cc_data[TCP_CC_DATA_SZ]; /**< Congestion control algo private data */ u32 fr_occurences; /**< fast-retransmit occurrences RFC4898 tcpEStatsStackFastRetran */ u32 tr_occurences; /**< timer-retransmit occurrences */ u64 bytes_retrans; /**< RFC4898 tcpEStatsPerfOctetsRetrans */ u64 segs_retrans; /**< RFC4898 tcpEStatsPerfSegsRetrans*/ /* RTT and RTO */ u32 rto; /**< Retransmission timeout */ u32 rto_boff; /**< Index for RTO backoff */ u32 srtt; /**< Smoothed RTT measured in @ref TCP_TICK */ u32 rttvar; /**< Smoothed mean RTT difference. Approximates variance */ u32 rtt_seq; /**< Sequence number for tracked ACK */ f64 rtt_ts; /**< Timestamp for tracked ACK */ f64 mrtt_us; /**< High precision mrtt from tracked acks */ u32 psh_seq; /**< Add psh header for seg that includes this */ u32 next_node_index; /**< Can be used to control next node in output */ u32 next_node_opaque; /**< Opaque to pass to next node */ u32 limited_transmit; /**< snd_nxt when limited transmit starts */ u32 sw_if_index; /**< Interface for the connection */ /* Delivery rate estimation */ u64 delivered; /**< Total bytes delivered to peer */ u64 app_limited; /**< Delivered when app-limited detected */ f64 delivered_time; /**< Time last bytes were acked */ f64 first_tx_time; /**< Send time for recently delivered/sent */ u64 lost; /**< Total bytes lost */ tcp_byte_tracker_t *bt; /**< Tx byte tracker */ tcp_errors_t errors; /**< Soft connection errors */ u32 iss; /**< initial sent sequence */ u32 irs; /**< initial remote sequence */ f64 start_ts; /**< Timestamp when connection initialized */ u32 last_fib_check; /**< Last time we checked fib route for peer */ u16 mss; /**< Our max seg size that includes options */ u32 ipv6_flow_label; /**< flow label for ipv6 header */ #define rst_state snd_wl1 } tcp_connection_t; /* *INDENT-OFF* */ struct _tcp_cc_algorithm { const char *name; uword (*unformat_cfg) (unformat_input_t * input); void (*init) (tcp_connection_t * tc); void (*cleanup) (tcp_connection_t * tc); void (*rcv_ack) (tcp_connection_t * tc, tcp_rate_sample_t *rs); void (*rcv_cong_ack) (tcp_connection_t * tc, tcp_cc_ack_t ack, tcp_rate_sample_t *rs); void (*congestion) (tcp_connection_t * tc); void (*loss) (tcp_connection_t * tc); void (*recovered) (tcp_connection_t * tc); void (*undo_recovery) (tcp_connection_t * tc); void (*event) (tcp_connection_t *tc, tcp_cc_event_t evt); u64 (*get_pacing_rate) (tcp_connection_t *tc); }; /* *INDENT-ON* */ #define tcp_fastrecovery_on(tc) (tc)->flags |= TCP_CONN_FAST_RECOVERY #define tcp_fastrecovery_off(tc) (tc)->flags &= ~TCP_CONN_FAST_RECOVERY #define tcp_recovery_on(tc) (tc)->flags |= TCP_CONN_RECOVERY #define tcp_recovery_off(tc) (tc)->flags &= ~TCP_CONN_RECOVERY #define tcp_in_fastrecovery(tc) ((tc)->flags & TCP_CONN_FAST_RECOVERY) #define tcp_in_recovery(tc) ((tc)->flags & (TCP_CONN_RECOVERY)) #define tcp_in_slowstart(tc) (tc->cwnd < tc->ssthresh) #define tcp_disconnect_pending(tc) ((tc)->flags & TCP_CONN_DCNT_PENDING) #define tcp_disconnect_pending_on(tc) ((tc)->flags |= TCP_CONN_DCNT_PENDING) #define tcp_disconnect_pending_off(tc) ((tc)->flags &= ~TCP_CONN_DCNT_PENDING) #define tcp_fastrecovery_first(tc) ((tc)->flags & TCP_CONN_FRXT_FIRST) #define tcp_fastrecovery_first_on(tc) ((tc)->flags |= TCP_CONN_FRXT_FIRST) #define tcp_fastrecovery_first_off(tc) ((tc)->flags &= ~TCP_CONN_FRXT_FIRST) #define tcp_in_cong_recovery(tc) ((tc)->flags & \ (TCP_CONN_FAST_RECOVERY | TCP_CONN_RECOVERY)) always_inline void tcp_cong_recovery_off (tcp_connection_t * tc) { tc->flags &= ~(TCP_CONN_FAST_RECOVERY | TCP_CONN_RECOVERY); tcp_fastrecovery_first_off (tc); } #define tcp_csum_offload(tc) (!((tc)->cfg_flags & TCP_CFG_F_NO_CSUM_OFFLOAD)) #define tcp_zero_rwnd_sent(tc) ((tc)->flags & TCP_CONN_ZERO_RWND_SENT) #define tcp_zero_rwnd_sent_on(tc) (tc)->flags |= TCP_CONN_ZERO_RWND_SENT #define tcp_zero_rwnd_sent_off(tc) (tc)->flags &= ~TCP_CONN_ZERO_RWND_SENT always_inline tcp_connection_t * tcp_get_connection_from_transport (transport_connection_t * tconn) { return (tcp_connection_t *) tconn; } /* * Define custom timer wheel geometry */ #undef TW_TIMER_WHEELS #undef TW_SLOTS_PER_RING #undef TW_RING_SHIFT #undef TW_RING_MASK #undef TW_TIMERS_PER_OBJECT #undef LOG2_TW_TIMERS_PER_OBJECT #undef TW_SUFFIX #undef TW_OVERFLOW_VECTOR #undef TW_FAST_WHEEL_BITMAP #undef TW_TIMER_ALLOW_DUPLICATE_STOP #undef TW_START_STOP_TRACE_SIZE #define TW_TIMER_WHEELS 2 #define TW_SLOTS_PER_RING 1024 #define TW_RING_SHIFT 10 #define TW_RING_MASK (TW_SLOTS_PER_RING -1) #define TW_TIMERS_PER_OBJECT 16 #define LOG2_TW_TIMERS_PER_OBJECT 4 #define TW_SUFFIX _tcp_twsl #define TW_FAST_WHEEL_BITMAP 0 #define TW_TIMER_ALLOW_DUPLICATE_STOP 1 #include <vppinfra/tw_timer_template.h> typedef tw_timer_wheel_tcp_twsl_t tcp_timer_wheel_t; #endif /* SRC_VNET_TCP_TCP_TYPES_H_ */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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