lsquic_parse.h revision feca77f5
17d09751dSDmitri Tikhonov/* Copyright (c) 2017 - 2020 LiteSpeed Technologies Inc. See LICENSE. */ 250aadb33SDmitri Tikhonov#ifndef LSQUIC_PARSE_H 350aadb33SDmitri Tikhonov#define LSQUIC_PARSE_H 1 450aadb33SDmitri Tikhonov 550aadb33SDmitri Tikhonov#include <stdint.h> 650aadb33SDmitri Tikhonov 750aadb33SDmitri Tikhonov#include "lsquic_packet_common.h" 85392f7a3SLiteSpeed Tech#include "lsquic_packet_gquic.h" 950aadb33SDmitri Tikhonov 105392f7a3SLiteSpeed Techstruct lsquic_conn; 1150aadb33SDmitri Tikhonovstruct lsquic_packet_in; 129626cfc2SDmitri Tikhonovstruct lsquic_packet_out; 139626cfc2SDmitri Tikhonovstruct packin_parse_state; 1450aadb33SDmitri Tikhonovstruct stream_frame; 155392f7a3SLiteSpeed Techstruct lsquic_cid; 169626cfc2SDmitri Tikhonovenum packet_out_flags; 175392f7a3SLiteSpeed Techenum lsquic_version; 185392f7a3SLiteSpeed Techenum stream_dir; 1950aadb33SDmitri Tikhonov 2050aadb33SDmitri Tikhonov 215392f7a3SLiteSpeed Techstruct ack_info 2250aadb33SDmitri Tikhonov{ 235392f7a3SLiteSpeed Tech enum packnum_space pns; 245392f7a3SLiteSpeed Tech enum { 255392f7a3SLiteSpeed Tech AI_ECN = 1 << 0, /* ecn_counts[1,2,3] contain ECN counts */ 265392f7a3SLiteSpeed Tech AI_TRUNCATED = 1 << 1, /* There were more ranges to parse, but we 275392f7a3SLiteSpeed Tech * ran out of elements in `ranges'. 285392f7a3SLiteSpeed Tech */ 295392f7a3SLiteSpeed Tech } flags; 3050aadb33SDmitri Tikhonov unsigned n_ranges; /* This is at least 1 */ 3150aadb33SDmitri Tikhonov /* Largest acked is ack_info.ranges[0].high */ 3250aadb33SDmitri Tikhonov lsquic_time_t lack_delta; 335392f7a3SLiteSpeed Tech uint64_t ecn_counts[4]; 34bfc7bfd8SDmitri Tikhonov struct lsquic_packno_range ranges[256]; 3516a9b66aSDmitri Tikhonov}; 3616a9b66aSDmitri Tikhonov 3750aadb33SDmitri Tikhonov#define largest_acked(acki) (+(acki)->ranges[0].high) 3850aadb33SDmitri Tikhonov 3950aadb33SDmitri Tikhonov#define smallest_acked(acki) (+(acki)->ranges[(acki)->n_ranges - 1].low) 4050aadb33SDmitri Tikhonov 415392f7a3SLiteSpeed Tech/* Chrome may send an empty ACK frame when it closes a connection. 425392f7a3SLiteSpeed Tech * We do not know why it occurs -- perhaps a bug in Chrome. 435392f7a3SLiteSpeed Tech */ 445392f7a3SLiteSpeed Tech/* This macro cannot be used in IETF QUIC as zero is a valid packet number. 455392f7a3SLiteSpeed Tech * Hopefully the Chrome bug will have been fixed by then. 465392f7a3SLiteSpeed Tech */ 475392f7a3SLiteSpeed Tech#define empty_ack_frame(acki) (largest_acked(acki) == 0) 485392f7a3SLiteSpeed Tech 4950aadb33SDmitri Tikhonov/* gaf_: generate ACK frame */ 5050aadb33SDmitri Tikhonovstruct lsquic_packno_range; 5150aadb33SDmitri Tikhonovtypedef const struct lsquic_packno_range * 5250aadb33SDmitri Tikhonov (*gaf_rechist_first_f) (void *rechist); 5350aadb33SDmitri Tikhonovtypedef const struct lsquic_packno_range * 5450aadb33SDmitri Tikhonov (*gaf_rechist_next_f) (void *rechist); 5550aadb33SDmitri Tikhonovtypedef lsquic_time_t 5650aadb33SDmitri Tikhonov (*gaf_rechist_largest_recv_f) (void *rechist); 5750aadb33SDmitri Tikhonov 5850aadb33SDmitri Tikhonov/* gsf_: generate stream frame */ 5950aadb33SDmitri Tikhonovtypedef size_t (*gsf_read_f) (void *stream, void *buf, size_t len, int *fin); 6050aadb33SDmitri Tikhonov 615392f7a3SLiteSpeed Tech/* gcf_: generate CRYPTO frame */ 625392f7a3SLiteSpeed Techtypedef size_t (*gcf_read_f) (void *stream, void *buf, size_t len); 635392f7a3SLiteSpeed Tech 6450aadb33SDmitri Tikhonov/* This structure contains functions that parse and generate packets and 6550aadb33SDmitri Tikhonov * frames in version-specific manner. To begin with, there is difference 6650aadb33SDmitri Tikhonov * between GQUIC's little-endian (Q038 and lower) and big-endian formats 675392f7a3SLiteSpeed Tech * (Q039 and higher). Q046 and higher uses different format for packet headers. 6850aadb33SDmitri Tikhonov */ 6950aadb33SDmitri Tikhonovstruct parse_funcs 7050aadb33SDmitri Tikhonov{ 7150aadb33SDmitri Tikhonov /* Return buf length */ 7250aadb33SDmitri Tikhonov int 739626cfc2SDmitri Tikhonov (*pf_gen_reg_pkt_header) (const struct lsquic_conn *, 749626cfc2SDmitri Tikhonov const struct lsquic_packet_out *, unsigned char *, size_t); 7550aadb33SDmitri Tikhonov void 7650aadb33SDmitri Tikhonov (*pf_parse_packet_in_finish) (struct lsquic_packet_in *packet_in, 7750aadb33SDmitri Tikhonov struct packin_parse_state *); 786aba801dSDmitri Tikhonov enum quic_frame_type 79feca77f5SDmitri Tikhonov (*pf_parse_frame_type) (const unsigned char *, size_t); 8014e3680dSDmitri Tikhonov /* Return used buffer length or a negative value if there was not enough 8114e3680dSDmitri Tikhonov * room to write the stream frame. In the latter case, the negative of 8214e3680dSDmitri Tikhonov * the negative return value is the number of bytes required. The 8314e3680dSDmitri Tikhonov * exception is -1, which is a generic error code, as we always need 8414e3680dSDmitri Tikhonov * more than 1 byte to write a STREAM frame. 8514e3680dSDmitri Tikhonov */ 8650aadb33SDmitri Tikhonov int 8750aadb33SDmitri Tikhonov (*pf_gen_stream_frame) (unsigned char *buf, size_t bufsz, 885392f7a3SLiteSpeed Tech lsquic_stream_id_t stream_id, uint64_t offset, 89bfc7bfd8SDmitri Tikhonov int fin, size_t size, gsf_read_f, void *stream); 9050aadb33SDmitri Tikhonov int 9150aadb33SDmitri Tikhonov (*pf_parse_stream_frame) (const unsigned char *buf, size_t rem_packet_sz, 9250aadb33SDmitri Tikhonov struct stream_frame *); 9350aadb33SDmitri Tikhonov int 945392f7a3SLiteSpeed Tech (*pf_parse_crypto_frame) (const unsigned char *buf, size_t rem_packet_sz, 955392f7a3SLiteSpeed Tech struct stream_frame *); 965392f7a3SLiteSpeed Tech int 975392f7a3SLiteSpeed Tech (*pf_gen_crypto_frame) (unsigned char *buf, size_t bufsz, uint64_t offset, 985392f7a3SLiteSpeed Tech size_t size, gcf_read_f, void *stream); 995392f7a3SLiteSpeed Tech int 10050aadb33SDmitri Tikhonov (*pf_parse_ack_frame) (const unsigned char *buf, size_t buf_len, 1015392f7a3SLiteSpeed Tech struct ack_info *ack_info, uint8_t exp); 10250aadb33SDmitri Tikhonov int 10350aadb33SDmitri Tikhonov (*pf_gen_ack_frame) (unsigned char *outbuf, size_t outbuf_sz, 10450aadb33SDmitri Tikhonov gaf_rechist_first_f, gaf_rechist_next_f, 10550aadb33SDmitri Tikhonov gaf_rechist_largest_recv_f, void *rechist, lsquic_time_t now, 1065392f7a3SLiteSpeed Tech int *has_missing, lsquic_packno_t *largest_received, 1075392f7a3SLiteSpeed Tech const uint64_t *ecn_counts); 10850aadb33SDmitri Tikhonov int 10950aadb33SDmitri Tikhonov (*pf_gen_stop_waiting_frame) (unsigned char *buf, size_t buf_len, 110c7d81ce1SDmitri Tikhonov lsquic_packno_t cur_packno, enum packno_bits, 11150aadb33SDmitri Tikhonov lsquic_packno_t least_unacked_packno); 11250aadb33SDmitri Tikhonov int 11350aadb33SDmitri Tikhonov (*pf_parse_stop_waiting_frame) (const unsigned char *buf, size_t buf_len, 114c7d81ce1SDmitri Tikhonov lsquic_packno_t cur_packno, enum packno_bits, 11550aadb33SDmitri Tikhonov lsquic_packno_t *least_unacked); 11650aadb33SDmitri Tikhonov int 117c7d81ce1SDmitri Tikhonov (*pf_skip_stop_waiting_frame) (size_t buf_len, enum packno_bits); 11850aadb33SDmitri Tikhonov int 11950aadb33SDmitri Tikhonov (*pf_gen_window_update_frame) (unsigned char *buf, int buf_len, 1205392f7a3SLiteSpeed Tech lsquic_stream_id_t stream_id, uint64_t offset); 12150aadb33SDmitri Tikhonov int 12250aadb33SDmitri Tikhonov (*pf_parse_window_update_frame) (const unsigned char *buf, size_t buf_len, 1235392f7a3SLiteSpeed Tech lsquic_stream_id_t *stream_id, uint64_t *offset); 1245392f7a3SLiteSpeed Tech /* The third argument for pf_gen_blocked_frame() and pf_parse_blocked_frame() 1255392f7a3SLiteSpeed Tech * is Stream ID for GQUIC and offset for IETF QUIC. Since both of these are 1265392f7a3SLiteSpeed Tech * uint64_t, we'll use the same function pointer. Just have to be a little 1275392f7a3SLiteSpeed Tech * careful here. 1285392f7a3SLiteSpeed Tech */ 12950aadb33SDmitri Tikhonov int 13050aadb33SDmitri Tikhonov (*pf_gen_blocked_frame) (unsigned char *buf, size_t buf_len, 1315392f7a3SLiteSpeed Tech lsquic_stream_id_t stream_id); 13250aadb33SDmitri Tikhonov int 13350aadb33SDmitri Tikhonov (*pf_parse_blocked_frame) (const unsigned char *buf, size_t buf_len, 1345392f7a3SLiteSpeed Tech /* TODO: rename third argument when dropping GQUIC */ 1355392f7a3SLiteSpeed Tech lsquic_stream_id_t *stream_id); 1365392f7a3SLiteSpeed Tech unsigned 1375392f7a3SLiteSpeed Tech (*pf_blocked_frame_size) (uint64_t); 1385392f7a3SLiteSpeed Tech unsigned 1395392f7a3SLiteSpeed Tech (*pf_rst_frame_size) (lsquic_stream_id_t stream_id, uint64_t final_size, 1405392f7a3SLiteSpeed Tech uint64_t error_code); 14150aadb33SDmitri Tikhonov int 1425392f7a3SLiteSpeed Tech (*pf_gen_rst_frame) (unsigned char *buf, size_t buf_len, 1435392f7a3SLiteSpeed Tech lsquic_stream_id_t stream_id, uint64_t offset, uint64_t error_code); 14450aadb33SDmitri Tikhonov int 14550aadb33SDmitri Tikhonov (*pf_parse_rst_frame) (const unsigned char *buf, size_t buf_len, 1465392f7a3SLiteSpeed Tech lsquic_stream_id_t *stream_id, uint64_t *offset, uint64_t *error_code); 1475392f7a3SLiteSpeed Tech int 1485392f7a3SLiteSpeed Tech (*pf_parse_stop_sending_frame) (const unsigned char *buf, size_t buf_len, 1495392f7a3SLiteSpeed Tech lsquic_stream_id_t *stream_id, uint64_t *error_code); 1505392f7a3SLiteSpeed Tech unsigned 1515392f7a3SLiteSpeed Tech (*pf_stop_sending_frame_size) (lsquic_stream_id_t, uint64_t); 1525392f7a3SLiteSpeed Tech int 1535392f7a3SLiteSpeed Tech (*pf_gen_stop_sending_frame) (unsigned char *buf, size_t buf_len, 1545392f7a3SLiteSpeed Tech lsquic_stream_id_t, uint64_t error_code); 1557d09751dSDmitri Tikhonov size_t 1567d09751dSDmitri Tikhonov (*pf_connect_close_frame_size) (int app_error, unsigned error_code, 1577d09751dSDmitri Tikhonov unsigned frame_type, size_t reason_len); 15850aadb33SDmitri Tikhonov int 1595392f7a3SLiteSpeed Tech (*pf_gen_connect_close_frame) (unsigned char *buf, size_t buf_len, 1605392f7a3SLiteSpeed Tech int app_error, unsigned error_code, const char *reason, int reason_len); 16150aadb33SDmitri Tikhonov int 16250aadb33SDmitri Tikhonov (*pf_parse_connect_close_frame) (const unsigned char *buf, size_t buf_len, 1635392f7a3SLiteSpeed Tech int *app_error, uint64_t *error_code, uint16_t *reason_length, 16450aadb33SDmitri Tikhonov uint8_t *reason_offset); 16550aadb33SDmitri Tikhonov int 16650aadb33SDmitri Tikhonov (*pf_gen_goaway_frame) (unsigned char *buf, size_t buf_len, 1675392f7a3SLiteSpeed Tech uint32_t error_code, lsquic_stream_id_t last_good_stream_id, 16850aadb33SDmitri Tikhonov const char *reason, size_t reason_len); 16950aadb33SDmitri Tikhonov int 17050aadb33SDmitri Tikhonov (*pf_parse_goaway_frame) (const unsigned char *buf, size_t buf_len, 1715392f7a3SLiteSpeed Tech uint32_t *error_code, lsquic_stream_id_t *last_good_stream_id, 17250aadb33SDmitri Tikhonov uint16_t *reason_length, const char **reason); 17350aadb33SDmitri Tikhonov int 17450aadb33SDmitri Tikhonov (*pf_gen_ping_frame) (unsigned char *buf, int buf_len); 1755392f7a3SLiteSpeed Tech int 1765392f7a3SLiteSpeed Tech (*pf_parse_path_chal_frame) (const unsigned char *buf, size_t, 1775392f7a3SLiteSpeed Tech uint64_t *chal); 1785392f7a3SLiteSpeed Tech int 1795392f7a3SLiteSpeed Tech (*pf_parse_path_resp_frame) (const unsigned char *buf, size_t, 1805392f7a3SLiteSpeed Tech uint64_t *resp); 181a4e24689SBob Perper#ifndef NDEBUG 18250aadb33SDmitri Tikhonov /* These float reading and writing functions assume `mem' has at least 18350aadb33SDmitri Tikhonov * 2 bytes. 18450aadb33SDmitri Tikhonov */ 18550aadb33SDmitri Tikhonov void 18650aadb33SDmitri Tikhonov (*pf_write_float_time16) (lsquic_time_t time_us, void *mem); 18750aadb33SDmitri Tikhonov uint64_t 18850aadb33SDmitri Tikhonov (*pf_read_float_time16) (const void *mem); 189a4e24689SBob Perper#endif 1905392f7a3SLiteSpeed Tech ssize_t 1915392f7a3SLiteSpeed Tech (*pf_generate_simple_prst) (const lsquic_cid_t *cid, 1925392f7a3SLiteSpeed Tech unsigned char *, size_t); 19350aadb33SDmitri Tikhonov size_t 1945392f7a3SLiteSpeed Tech (*pf_calc_stream_frame_header_sz) (lsquic_stream_id_t stream_id, 1955392f7a3SLiteSpeed Tech uint64_t offset, unsigned data_sz); 1965392f7a3SLiteSpeed Tech size_t 1977a8b2eceSDmitri Tikhonov (*pf_calc_crypto_frame_header_sz) (uint64_t offset, unsigned data_sz); 198c51ce338SDmitri Tikhonov void 199c51ce338SDmitri Tikhonov (*pf_turn_on_fin) (unsigned char *); 2009626cfc2SDmitri Tikhonov 2019626cfc2SDmitri Tikhonov size_t 2029626cfc2SDmitri Tikhonov (*pf_packout_size) (const struct lsquic_conn *, 2039626cfc2SDmitri Tikhonov const struct lsquic_packet_out *); 2049626cfc2SDmitri Tikhonov 2055392f7a3SLiteSpeed Tech /* This returns the high estimate of the header size. Note that it 2065392f7a3SLiteSpeed Tech * cannot account for the size of the token in the IETF QUIC Initial 2075392f7a3SLiteSpeed Tech * packets as it does not know it. 2085392f7a3SLiteSpeed Tech */ 2099626cfc2SDmitri Tikhonov size_t 2105392f7a3SLiteSpeed Tech (*pf_packout_max_header_size) (const struct lsquic_conn *, 2115392f7a3SLiteSpeed Tech enum packet_out_flags, size_t dcid_len); 212c7d81ce1SDmitri Tikhonov 213c7d81ce1SDmitri Tikhonov enum packno_bits 214c7d81ce1SDmitri Tikhonov (*pf_calc_packno_bits) (lsquic_packno_t packno, 215c7d81ce1SDmitri Tikhonov lsquic_packno_t least_unacked, uint64_t n_in_flight); 216c7d81ce1SDmitri Tikhonov unsigned 217c7d81ce1SDmitri Tikhonov (*pf_packno_bits2len) (enum packno_bits); 2185392f7a3SLiteSpeed Tech 2197a8b2eceSDmitri Tikhonov /* Used by IETF QUIC and gQUIC >= Q050 */ 2205392f7a3SLiteSpeed Tech void 2215392f7a3SLiteSpeed Tech (*pf_packno_info) (const struct lsquic_conn *, 2225392f7a3SLiteSpeed Tech const struct lsquic_packet_out *, unsigned *packno_off, 2235392f7a3SLiteSpeed Tech unsigned *packno_len); 2245392f7a3SLiteSpeed Tech int 2255392f7a3SLiteSpeed Tech (*pf_parse_max_data) (const unsigned char *, size_t, uint64_t *); 2265392f7a3SLiteSpeed Tech int 2275392f7a3SLiteSpeed Tech (*pf_gen_max_data_frame) (unsigned char *, size_t, uint64_t); 2285392f7a3SLiteSpeed Tech unsigned 2295392f7a3SLiteSpeed Tech (*pf_max_data_frame_size) (uint64_t); 23003e6b668SDmitri Tikhonov /* 23103e6b668SDmitri Tikhonov * Returns number of bytes parsed on success or negative value on error: 23203e6b668SDmitri Tikhonov * -1 Out of input buffer 23303e6b668SDmitri Tikhonov * -2 Invalid CID length value 23403e6b668SDmitri Tikhonov */ 2355392f7a3SLiteSpeed Tech int 2365392f7a3SLiteSpeed Tech (*pf_parse_new_conn_id) (const unsigned char *, size_t, uint64_t *, 2375392f7a3SLiteSpeed Tech uint64_t *, lsquic_cid_t *, const unsigned char **); 2385392f7a3SLiteSpeed Tech unsigned 2395392f7a3SLiteSpeed Tech (*pf_stream_blocked_frame_size) (lsquic_stream_id_t, uint64_t); 2405392f7a3SLiteSpeed Tech int 2415392f7a3SLiteSpeed Tech (*pf_gen_stream_blocked_frame) (unsigned char *buf, size_t, 2425392f7a3SLiteSpeed Tech lsquic_stream_id_t, uint64_t); 2435392f7a3SLiteSpeed Tech int 2445392f7a3SLiteSpeed Tech (*pf_parse_stream_blocked_frame) (const unsigned char *buf, size_t, 2455392f7a3SLiteSpeed Tech lsquic_stream_id_t *, uint64_t *); 2465392f7a3SLiteSpeed Tech unsigned 2475392f7a3SLiteSpeed Tech (*pf_max_stream_data_frame_size) (lsquic_stream_id_t, uint64_t); 2485392f7a3SLiteSpeed Tech int 2495392f7a3SLiteSpeed Tech (*pf_gen_max_stream_data_frame) (unsigned char *buf, size_t, 2505392f7a3SLiteSpeed Tech lsquic_stream_id_t, uint64_t); 2515392f7a3SLiteSpeed Tech int 2525392f7a3SLiteSpeed Tech (*pf_parse_max_stream_data_frame) (const unsigned char *buf, size_t, 2535392f7a3SLiteSpeed Tech lsquic_stream_id_t *, uint64_t *); 2545392f7a3SLiteSpeed Tech int 2555392f7a3SLiteSpeed Tech (*pf_parse_new_token_frame) (const unsigned char *buf, size_t, 2565392f7a3SLiteSpeed Tech const unsigned char **token, size_t *token_size); 2575392f7a3SLiteSpeed Tech size_t 2585392f7a3SLiteSpeed Tech (*pf_new_connection_id_frame_size) (unsigned seqno, unsigned cid_len); 2595392f7a3SLiteSpeed Tech int 2605392f7a3SLiteSpeed Tech (*pf_gen_new_connection_id_frame) (unsigned char *buf, size_t, 2615392f7a3SLiteSpeed Tech unsigned seqno, const struct lsquic_cid *, 2625392f7a3SLiteSpeed Tech const unsigned char *token, size_t); 2635392f7a3SLiteSpeed Tech size_t 2645392f7a3SLiteSpeed Tech (*pf_retire_cid_frame_size) (uint64_t); 2655392f7a3SLiteSpeed Tech int 2665392f7a3SLiteSpeed Tech (*pf_gen_retire_cid_frame) (unsigned char *buf, size_t, uint64_t); 2675392f7a3SLiteSpeed Tech int 2685392f7a3SLiteSpeed Tech (*pf_parse_retire_cid_frame) (const unsigned char *buf, size_t, uint64_t *); 2695392f7a3SLiteSpeed Tech size_t 2705392f7a3SLiteSpeed Tech (*pf_new_token_frame_size) (size_t); 2715392f7a3SLiteSpeed Tech int 2725392f7a3SLiteSpeed Tech (*pf_gen_new_token_frame) (unsigned char *buf, size_t, 2735392f7a3SLiteSpeed Tech const unsigned char *token, size_t); 2745392f7a3SLiteSpeed Tech int 2755392f7a3SLiteSpeed Tech (*pf_gen_streams_blocked_frame) (unsigned char *buf, size_t buf_len, 2765392f7a3SLiteSpeed Tech enum stream_dir, uint64_t); 2775392f7a3SLiteSpeed Tech int 2785392f7a3SLiteSpeed Tech (*pf_parse_streams_blocked_frame) (const unsigned char *buf, size_t buf_len, 2795392f7a3SLiteSpeed Tech enum stream_dir *, uint64_t *); 2805392f7a3SLiteSpeed Tech unsigned 2815392f7a3SLiteSpeed Tech (*pf_streams_blocked_frame_size) (uint64_t); 2825392f7a3SLiteSpeed Tech int 2835392f7a3SLiteSpeed Tech (*pf_gen_max_streams_frame) (unsigned char *buf, size_t buf_len, 2845392f7a3SLiteSpeed Tech enum stream_dir, uint64_t); 2855392f7a3SLiteSpeed Tech int 2865392f7a3SLiteSpeed Tech (*pf_parse_max_streams_frame) (const unsigned char *buf, size_t buf_len, 2875392f7a3SLiteSpeed Tech enum stream_dir *, uint64_t *); 2885392f7a3SLiteSpeed Tech unsigned 2895392f7a3SLiteSpeed Tech (*pf_max_streams_frame_size) (uint64_t); 2905392f7a3SLiteSpeed Tech unsigned 2915392f7a3SLiteSpeed Tech (*pf_path_chal_frame_size) (void); 2925392f7a3SLiteSpeed Tech int 2935392f7a3SLiteSpeed Tech (*pf_gen_path_chal_frame) (unsigned char *, size_t, uint64_t chal); 2945392f7a3SLiteSpeed Tech unsigned 2955392f7a3SLiteSpeed Tech (*pf_path_resp_frame_size) (void); 2965392f7a3SLiteSpeed Tech int 2975392f7a3SLiteSpeed Tech (*pf_gen_path_resp_frame) (unsigned char *, size_t, uint64_t resp); 2989fc12041SDmitri Tikhonov int 2999fc12041SDmitri Tikhonov (*pf_gen_handshake_done_frame) (unsigned char *buf, size_t buf_len); 3009fc12041SDmitri Tikhonov int 3019fc12041SDmitri Tikhonov (*pf_parse_handshake_done_frame) (const unsigned char *buf, size_t buf_len); 3029fc12041SDmitri Tikhonov unsigned 3039fc12041SDmitri Tikhonov (*pf_handshake_done_frame_size) (void); 304feca77f5SDmitri Tikhonov int 305feca77f5SDmitri Tikhonov (*pf_gen_ack_frequency_frame) (unsigned char *buf, size_t buf_len, 306feca77f5SDmitri Tikhonov uint64_t seqno, uint64_t pack_tol, uint64_t upd_mad); 307feca77f5SDmitri Tikhonov int 308feca77f5SDmitri Tikhonov (*pf_parse_ack_frequency_frame) (const unsigned char *buf, size_t buf_len, 309feca77f5SDmitri Tikhonov uint64_t *seqno, uint64_t *pack_tol, uint64_t *upd_mad); 310feca77f5SDmitri Tikhonov unsigned 311feca77f5SDmitri Tikhonov (*pf_ack_frequency_frame_size) (uint64_t seqno, uint64_t pack_tol, 312feca77f5SDmitri Tikhonov uint64_t upd_mad); 31350aadb33SDmitri Tikhonov}; 31450aadb33SDmitri Tikhonov 3155392f7a3SLiteSpeed Tech 316fb96f4ddSDmitri Tikhonovextern const struct parse_funcs lsquic_parse_funcs_gquic_Q043; 317c7d81ce1SDmitri Tikhonovextern const struct parse_funcs lsquic_parse_funcs_gquic_Q046; 3187a8b2eceSDmitri Tikhonovextern const struct parse_funcs lsquic_parse_funcs_gquic_Q050; 3199fc12041SDmitri Tikhonovextern const struct parse_funcs lsquic_parse_funcs_ietf_id24; 3205392f7a3SLiteSpeed Techextern const struct parse_funcs lsquic_parse_funcs_ietf_v1; 32150aadb33SDmitri Tikhonov 3225392f7a3SLiteSpeed Tech#define select_pf_by_ver(ver) ( \ 323fb96f4ddSDmitri Tikhonov (1 << (ver)) & (1 << LSQVER_043) ? \ 324fb96f4ddSDmitri Tikhonov &lsquic_parse_funcs_gquic_Q043 : \ 3257a8b2eceSDmitri Tikhonov (1 << (ver)) & (1 << LSQVER_046) ? \ 3265392f7a3SLiteSpeed Tech &lsquic_parse_funcs_gquic_Q046 : \ 3277a8b2eceSDmitri Tikhonov (1 << (ver)) & ((1 << LSQVER_050)|LSQUIC_EXPERIMENTAL_Q098) ? \ 3287a8b2eceSDmitri Tikhonov &lsquic_parse_funcs_gquic_Q050 : \ 3299fc12041SDmitri Tikhonov (1 << (ver)) & (1 << LSQVER_ID24) ? \ 3309fc12041SDmitri Tikhonov &lsquic_parse_funcs_ietf_id24 : \ 3315392f7a3SLiteSpeed Tech &lsquic_parse_funcs_ietf_v1) 33250aadb33SDmitri Tikhonov 3335392f7a3SLiteSpeed Tech/* This function is gQUIC-version independent */ 33450aadb33SDmitri Tikhonovint 3359626cfc2SDmitri Tikhonovlsquic_gquic_parse_packet_in_begin (struct lsquic_packet_in *, size_t length, 3365392f7a3SLiteSpeed Tech int is_server, unsigned cid_len, struct packin_parse_state *); 33750aadb33SDmitri Tikhonov 3389626cfc2SDmitri Tikhonovint 3395392f7a3SLiteSpeed Techlsquic_Q046_parse_packet_in_short_begin (struct lsquic_packet_in *, size_t length, 3405392f7a3SLiteSpeed Tech int is_server, unsigned, struct packin_parse_state *); 3419626cfc2SDmitri Tikhonov 3429626cfc2SDmitri Tikhonovint 3435392f7a3SLiteSpeed Techlsquic_Q046_parse_packet_in_long_begin (struct lsquic_packet_in *, size_t length, 3445392f7a3SLiteSpeed Tech int is_server, unsigned, struct packin_parse_state *); 3459626cfc2SDmitri Tikhonov 3467a8b2eceSDmitri Tikhonovint 3477a8b2eceSDmitri Tikhonovlsquic_Q050_parse_packet_in_long_begin (struct lsquic_packet_in *, size_t length, 3487a8b2eceSDmitri Tikhonov int is_server, unsigned, struct packin_parse_state *); 3497a8b2eceSDmitri Tikhonov 3506aba801dSDmitri Tikhonovenum quic_frame_type 351feca77f5SDmitri Tikhonovlsquic_parse_frame_type_gquic_Q035_thru_Q046 (const unsigned char *, size_t); 35250aadb33SDmitri Tikhonov 353feca77f5SDmitri Tikhonovextern const enum quic_frame_type lsquic_iquic_byte2type[0x40]; 3545392f7a3SLiteSpeed Tech 35550aadb33SDmitri Tikhonovsize_t 3565392f7a3SLiteSpeed Techcalc_stream_frame_header_sz_gquic (lsquic_stream_id_t stream_id, 3575392f7a3SLiteSpeed Tech uint64_t offset, unsigned); 35850aadb33SDmitri Tikhonov 3599626cfc2SDmitri Tikhonovsize_t 3609626cfc2SDmitri Tikhonovlsquic_gquic_packout_size (const struct lsquic_conn *, 3619626cfc2SDmitri Tikhonov const struct lsquic_packet_out *); 3629626cfc2SDmitri Tikhonov 3639626cfc2SDmitri Tikhonovsize_t 3649626cfc2SDmitri Tikhonovlsquic_gquic_packout_header_size (const struct lsquic_conn *conn, 3655392f7a3SLiteSpeed Tech enum packet_out_flags flags, size_t unused); 3665392f7a3SLiteSpeed Tech 3675392f7a3SLiteSpeed Techsize_t 3685392f7a3SLiteSpeed Techlsquic_gquic_po_header_sz (enum packet_out_flags flags); 3695392f7a3SLiteSpeed Tech 3705392f7a3SLiteSpeed Techsize_t 3715392f7a3SLiteSpeed Techlsquic_gquic_packout_size (const struct lsquic_conn *, 3725392f7a3SLiteSpeed Tech const struct lsquic_packet_out *); 3739626cfc2SDmitri Tikhonov 3749626cfc2SDmitri Tikhonovsize_t 3759626cfc2SDmitri Tikhonovlsquic_gquic_po_header_sz (enum packet_out_flags flags); 3769626cfc2SDmitri Tikhonov 37750aadb33SDmitri Tikhonov/* This maps two bits as follows: 37850aadb33SDmitri Tikhonov * 00 -> 1 37950aadb33SDmitri Tikhonov * 01 -> 2 38050aadb33SDmitri Tikhonov * 10 -> 4 38150aadb33SDmitri Tikhonov * 11 -> 6 38250aadb33SDmitri Tikhonov * 38350aadb33SDmitri Tikhonov * Assumes that only two low bits are set. 38450aadb33SDmitri Tikhonov */ 38550aadb33SDmitri Tikhonov#define twobit_to_1246(bits) ((bits) * 2 + !(bits)) 38650aadb33SDmitri Tikhonov 38750aadb33SDmitri Tikhonov/* This maps two bits as follows: 38850aadb33SDmitri Tikhonov * 00 -> 1 38950aadb33SDmitri Tikhonov * 01 -> 2 39050aadb33SDmitri Tikhonov * 10 -> 4 39150aadb33SDmitri Tikhonov * 11 -> 8 39250aadb33SDmitri Tikhonov * 39350aadb33SDmitri Tikhonov * Assumes that only two low bits are set. 39450aadb33SDmitri Tikhonov */ 39550aadb33SDmitri Tikhonov#define twobit_to_1248(bits) (1 << (bits)) 39650aadb33SDmitri Tikhonov 397de46bf2fSDmitri Tikhonov#define ECN_COUNTS_STR " ECT(0): 01234567879012345678790;" \ 398de46bf2fSDmitri Tikhonov " ECT(1): 01234567879012345678790;" \ 399de46bf2fSDmitri Tikhonov " CE: 01234567879012345678790" 400de46bf2fSDmitri Tikhonov#define RANGES_TRUNCATED_STR " ranges truncated! " 401de46bf2fSDmitri Tikhonov 402de46bf2fSDmitri Tikhonov#define MAX_ACKI_STR_SZ (256 * (3 /* [-] */ + 20 /* ~0ULL */ * 2) \ 403de46bf2fSDmitri Tikhonov + sizeof(ECN_COUNTS_STR) + sizeof(RANGES_TRUNCATED_STR)) 404de46bf2fSDmitri Tikhonov 405de46bf2fSDmitri Tikhonovvoid 406de46bf2fSDmitri Tikhonovlsquic_acki2str (const struct ack_info *acki, char *, size_t); 40750aadb33SDmitri Tikhonov 408c51ce338SDmitri Tikhonovvoid 4097a8b2eceSDmitri Tikhonovlsquic_turn_on_fin_Q035_thru_Q046 (unsigned char *); 410c51ce338SDmitri Tikhonov 411c7d81ce1SDmitri Tikhonovenum packno_bits 412c7d81ce1SDmitri Tikhonovlsquic_gquic_calc_packno_bits (lsquic_packno_t packno, 413c7d81ce1SDmitri Tikhonov lsquic_packno_t least_unacked, uint64_t n_in_flight); 414c7d81ce1SDmitri Tikhonov 415c7d81ce1SDmitri Tikhonovunsigned 416c7d81ce1SDmitri Tikhonovlsquic_gquic_packno_bits2len (enum packno_bits); 417c7d81ce1SDmitri Tikhonov 418de46bf2fSDmitri Tikhonovint 419de46bf2fSDmitri Tikhonovlsquic_merge_acks (struct ack_info *dst, const struct ack_info *src); 420de46bf2fSDmitri Tikhonov 42150aadb33SDmitri Tikhonov#endif 422