/src/openssl/ssl/quic/quic_fifd.c

Source
/*
 * Copyright 2022-2024 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include "internal/quic_fifd.h"
#include "internal/quic_wire.h"
#include "internal/qlog_event_helpers.h"

DEFINE_LIST_OF(tx_history, OSSL_ACKM_TX_PKT);

int ossl_quic_fifd_init(QUIC_FIFD *fifd,
                        QUIC_CFQ *cfq,
                        OSSL_ACKM *ackm,
                        QUIC_TXPIM *txpim,
                        /* stream_id is UINT64_MAX for the crypto stream */
                        QUIC_SSTREAM *(*get_sstream_by_id)(uint64_t stream_id,
                                                           uint32_t pn_space,
                                                           void *arg),
                        void *get_sstream_by_id_arg,
                        /* stream_id is UINT64_MAX if not applicable */
                        void (*regen_frame)(uint64_t frame_type,
                                            uint64_t stream_id,
                                            QUIC_TXPIM_PKT *pkt,
                                            void *arg),
                        void *regen_frame_arg,
                        void (*confirm_frame)(uint64_t frame_type,
                                              uint64_t stream_id,
                                              QUIC_TXPIM_PKT *pkt,
                                              void *arg),
                        void *confirm_frame_arg,
                        void (*sstream_updated)(uint64_t stream_id,
                                                void *arg),
                        void *sstream_updated_arg,
                        QLOG *(*get_qlog_cb)(void *arg),
                        void *get_qlog_cb_arg)
{
    if (cfq == NULL || ackm == NULL || txpim == NULL
        || get_sstream_by_id == NULL || regen_frame == NULL)
        return 0;

    fifd->cfq                   = cfq;
    fifd->ackm                  = ackm;
    fifd->txpim                 = txpim;
    fifd->get_sstream_by_id     = get_sstream_by_id;
    fifd->get_sstream_by_id_arg = get_sstream_by_id_arg;
    fifd->regen_frame           = regen_frame;
    fifd->regen_frame_arg       = regen_frame_arg;
    fifd->confirm_frame         = confirm_frame;
    fifd->confirm_frame_arg     = confirm_frame_arg;
    fifd->sstream_updated       = sstream_updated;
    fifd->sstream_updated_arg   = sstream_updated_arg;
    fifd->get_qlog_cb           = get_qlog_cb;
    fifd->get_qlog_cb_arg       = get_qlog_cb_arg;
    return 1;
}

void ossl_quic_fifd_cleanup(QUIC_FIFD *fifd)
{
    /* No-op. */
}

static void on_acked(void *arg)
{
    QUIC_TXPIM_PKT *pkt = arg;
    QUIC_FIFD *fifd = pkt->fifd;
    const QUIC_TXPIM_CHUNK *chunks = ossl_quic_txpim_pkt_get_chunks(pkt);
    size_t i, num_chunks = ossl_quic_txpim_pkt_get_num_chunks(pkt);
    QUIC_SSTREAM *sstream;
    QUIC_CFQ_ITEM *cfq_item, *cfq_item_next;

    /* STREAM and CRYPTO stream chunks, FINs and stream FC frames */
    for (i = 0; i < num_chunks; ++i) {
        sstream = fifd->get_sstream_by_id(chunks[i].stream_id,
                                          pkt->ackm_pkt.pkt_space,
                                          fifd->get_sstream_by_id_arg);
        if (sstream == NULL)
            continue;

        if (chunks[i].end >= chunks[i].start)
            /* coverity[check_return]: Best effort - we cannot fail here. */
            ossl_quic_sstream_mark_acked(sstream,
                                         chunks[i].start, chunks[i].end);

        if (chunks[i].has_fin && chunks[i].stream_id != UINT64_MAX)
            ossl_quic_sstream_mark_acked_fin(sstream);

        if (chunks[i].has_stop_sending && chunks[i].stream_id != UINT64_MAX)
            fifd->confirm_frame(OSSL_QUIC_FRAME_TYPE_STOP_SENDING,
                                chunks[i].stream_id, pkt,
                                fifd->confirm_frame_arg);

        if (chunks[i].has_reset_stream && chunks[i].stream_id != UINT64_MAX)
            fifd->confirm_frame(OSSL_QUIC_FRAME_TYPE_RESET_STREAM,
                                chunks[i].stream_id, pkt,
                                fifd->confirm_frame_arg);

        if (ossl_quic_sstream_is_totally_acked(sstream))
            fifd->sstream_updated(chunks[i].stream_id, fifd->sstream_updated_arg);
    }

    /* GCR */
    for (cfq_item = pkt->retx_head; cfq_item != NULL; cfq_item = cfq_item_next) {
        cfq_item_next = cfq_item->pkt_next;
        ossl_quic_cfq_release(fifd->cfq, cfq_item);
    }

    ossl_quic_txpim_pkt_release(fifd->txpim, pkt);
}

static QLOG *fifd_get_qlog(QUIC_FIFD *fifd)
{
    if (fifd->get_qlog_cb == NULL)
        return NULL;

    return fifd->get_qlog_cb(fifd->get_qlog_cb_arg);
}

static void on_lost(void *arg)
{
    QUIC_TXPIM_PKT *pkt = arg;
    QUIC_FIFD *fifd = pkt->fifd;
    const QUIC_TXPIM_CHUNK *chunks = ossl_quic_txpim_pkt_get_chunks(pkt);
    size_t i, num_chunks = ossl_quic_txpim_pkt_get_num_chunks(pkt);
    QUIC_SSTREAM *sstream;
    QUIC_CFQ_ITEM *cfq_item, *cfq_item_next;
    int sstream_updated;

    ossl_qlog_event_recovery_packet_lost(fifd_get_qlog(fifd), pkt);

    /* STREAM and CRYPTO stream chunks, FIN and stream FC frames */
    for (i = 0; i < num_chunks; ++i) {
        sstream = fifd->get_sstream_by_id(chunks[i].stream_id,
                                          pkt->ackm_pkt.pkt_space,
                                          fifd->get_sstream_by_id_arg);
        if (sstream == NULL)
            continue;

        sstream_updated = 0;

        if (chunks[i].end >= chunks[i].start) {
            /*
             * Note: If the stream is being reset, we do not need to retransmit
             * old data as this is pointless. In this case this will be handled
             * by (sstream == NULL) above as the QSM will free the QUIC_SSTREAM
             * and our call to get_sstream_by_id above will return NULL.
             */
            ossl_quic_sstream_mark_lost(sstream,
                                        chunks[i].start, chunks[i].end);
            sstream_updated = 1;
        }

        if (chunks[i].has_fin && chunks[i].stream_id != UINT64_MAX) {
            ossl_quic_sstream_mark_lost_fin(sstream);
            sstream_updated = 1;
        }

        if (chunks[i].has_stop_sending && chunks[i].stream_id != UINT64_MAX)
            fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_STOP_SENDING,
                              chunks[i].stream_id, pkt,
                              fifd->regen_frame_arg);

        if (chunks[i].has_reset_stream && chunks[i].stream_id != UINT64_MAX)
            fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_RESET_STREAM,
                              chunks[i].stream_id, pkt,
                              fifd->regen_frame_arg);

        /*
         * Inform caller that stream needs an FC frame.
         *
         * Note: We could track whether an FC frame was sent originally for the
         * stream to determine if it really needs to be regenerated or not.
         * However, if loss has occurred, it's probably better to ensure the
         * peer has up-to-date flow control data for the stream. Given that
         * these frames are extremely small, we may as well always send it when
         * handling loss.
         */
        fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_MAX_STREAM_DATA,
                          chunks[i].stream_id,
                          pkt,
                          fifd->regen_frame_arg);

        if (sstream_updated && chunks[i].stream_id != UINT64_MAX)
            fifd->sstream_updated(chunks[i].stream_id,
                                  fifd->sstream_updated_arg);
    }

    /* GCR */
    for (cfq_item = pkt->retx_head; cfq_item != NULL; cfq_item = cfq_item_next) {
        cfq_item_next = cfq_item->pkt_next;
        ossl_quic_cfq_mark_lost(fifd->cfq, cfq_item, UINT32_MAX);
    }

    /* Regenerate flag frames */
    if (pkt->had_handshake_done_frame)
        fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_HANDSHAKE_DONE,
                          UINT64_MAX, pkt,
                          fifd->regen_frame_arg);

    if (pkt->had_max_data_frame)
        fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_MAX_DATA,
                          UINT64_MAX, pkt,
                          fifd->regen_frame_arg);

    if (pkt->had_max_streams_bidi_frame)
        fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_MAX_STREAMS_BIDI,
                          UINT64_MAX, pkt,
                          fifd->regen_frame_arg);

    if (pkt->had_max_streams_uni_frame)
        fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_MAX_STREAMS_UNI,
                          UINT64_MAX, pkt,
                          fifd->regen_frame_arg);

    if (pkt->had_ack_frame)
        /*
         * We always use the ACK_WITH_ECN frame type to represent the ACK frame
         * type in our callback; we assume it is the caller's job to decide
         * whether it wants to send ECN data or not.
         */
        fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_ACK_WITH_ECN,
                          UINT64_MAX, pkt,
                          fifd->regen_frame_arg);

    ossl_quic_txpim_pkt_release(fifd->txpim, pkt);
}

static void on_discarded(void *arg)
{
    QUIC_TXPIM_PKT *pkt = arg;
    QUIC_FIFD *fifd = pkt->fifd;
    QUIC_CFQ_ITEM *cfq_item, *cfq_item_next;

    /*
     * Don't need to do anything to SSTREAMs for STREAM and CRYPTO streams, as
     * we assume caller will clean them up.
     */

    /* GCR */
    for (cfq_item = pkt->retx_head; cfq_item != NULL; cfq_item = cfq_item_next) {
        cfq_item_next = cfq_item->pkt_next;
        ossl_quic_cfq_release(fifd->cfq, cfq_item);
    }

    ossl_quic_txpim_pkt_release(fifd->txpim, pkt);
}

int ossl_quic_fifd_pkt_commit(QUIC_FIFD *fifd, QUIC_TXPIM_PKT *pkt)
{
    QUIC_CFQ_ITEM *cfq_item;
    const QUIC_TXPIM_CHUNK *chunks;
    size_t i, num_chunks;
    QUIC_SSTREAM *sstream;

    pkt->fifd                   = fifd;

    pkt->ackm_pkt.on_lost       = on_lost;
    pkt->ackm_pkt.on_acked      = on_acked;
    pkt->ackm_pkt.on_discarded  = on_discarded;
    pkt->ackm_pkt.cb_arg        = pkt;

    ossl_list_tx_history_init_elem(&pkt->ackm_pkt);
    pkt->ackm_pkt.anext = pkt->ackm_pkt.lnext = NULL;

    /*
     * Mark the CFQ items which have been added to this packet as having been
     * transmitted.
     */
    for (cfq_item = pkt->retx_head;
         cfq_item != NULL;
         cfq_item = cfq_item->pkt_next)
        ossl_quic_cfq_mark_tx(fifd->cfq, cfq_item);

    /*
     * Mark the send stream chunks which have been added to the packet as having
     * been transmitted.
     */
    chunks = ossl_quic_txpim_pkt_get_chunks(pkt);
    num_chunks = ossl_quic_txpim_pkt_get_num_chunks(pkt);
    for (i = 0; i < num_chunks; ++i) {
        sstream = fifd->get_sstream_by_id(chunks[i].stream_id,
                                          pkt->ackm_pkt.pkt_space,
                                          fifd->get_sstream_by_id_arg);
        if (sstream == NULL)
            continue;

        if (chunks[i].end >= chunks[i].start
            && !ossl_quic_sstream_mark_transmitted(sstream,
                                                   chunks[i].start,
                                                   chunks[i].end))
            return 0;

        if (chunks[i].has_fin
            && !ossl_quic_sstream_mark_transmitted_fin(sstream,
                                                       chunks[i].end + 1))
                return 0;
    }

    /* Inform the ACKM. */
    return ossl_ackm_on_tx_packet(fifd->ackm, &pkt->ackm_pkt);
}

void ossl_quic_fifd_set_qlog_cb(QUIC_FIFD *fifd, QLOG *(*get_qlog_cb)(void *arg),
                                void *get_qlog_cb_arg)
{
    fifd->get_qlog_cb       = get_qlog_cb;
    fifd->get_qlog_cb_arg   = get_qlog_cb_arg;
}

Coverage Report

Created: 2025-10-28 06:56

Line	Count	Source
1		/*
2		* Copyright 2022-2024 The OpenSSL Project Authors. All Rights Reserved.
3		*
4		* Licensed under the Apache License 2.0 (the "License"). You may not use
5		* this file except in compliance with the License. You can obtain a copy
6		* in the file LICENSE in the source distribution or at
7		* https://www.openssl.org/source/license.html
8		*/
9
10		#include "internal/quic_fifd.h"
11		#include "internal/quic_wire.h"
12		#include "internal/qlog_event_helpers.h"
13
14		DEFINE_LIST_OF(tx_history, OSSL_ACKM_TX_PKT);
15
16		int ossl_quic_fifd_init(QUIC_FIFD *fifd,
17		QUIC_CFQ *cfq,
18		OSSL_ACKM *ackm,
19		QUIC_TXPIM *txpim,
20		/* stream_id is UINT64_MAX for the crypto stream */
21		QUIC_SSTREAM (get_sstream_by_id)(uint64_t stream_id,
22		uint32_t pn_space,
23		void *arg),
24		void *get_sstream_by_id_arg,
25		/* stream_id is UINT64_MAX if not applicable */
26		void (*regen_frame)(uint64_t frame_type,
27		uint64_t stream_id,
28		QUIC_TXPIM_PKT *pkt,
29		void *arg),
30		void *regen_frame_arg,
31		void (*confirm_frame)(uint64_t frame_type,
32		uint64_t stream_id,
33		QUIC_TXPIM_PKT *pkt,
34		void *arg),
35		void *confirm_frame_arg,
36		void (*sstream_updated)(uint64_t stream_id,
37		void *arg),
38		void *sstream_updated_arg,
39		QLOG (get_qlog_cb)(void *arg),
40		void *get_qlog_cb_arg)
41	0	{
42	0	if (cfq == NULL \|\| ackm == NULL \|\| txpim == NULL
43	0	\|\| get_sstream_by_id == NULL \|\| regen_frame == NULL)
44	0	return 0;
45
46	0	fifd->cfq = cfq;
47	0	fifd->ackm = ackm;
48	0	fifd->txpim = txpim;
49	0	fifd->get_sstream_by_id = get_sstream_by_id;
50	0	fifd->get_sstream_by_id_arg = get_sstream_by_id_arg;
51	0	fifd->regen_frame = regen_frame;
52	0	fifd->regen_frame_arg = regen_frame_arg;
53	0	fifd->confirm_frame = confirm_frame;
54	0	fifd->confirm_frame_arg = confirm_frame_arg;
55	0	fifd->sstream_updated = sstream_updated;
56	0	fifd->sstream_updated_arg = sstream_updated_arg;
57	0	fifd->get_qlog_cb = get_qlog_cb;
58	0	fifd->get_qlog_cb_arg = get_qlog_cb_arg;
59	0	return 1;
60	0	}
61
62		void ossl_quic_fifd_cleanup(QUIC_FIFD *fifd)
63	0	{
64		/* No-op. */
65	0	}
66
67		static void on_acked(void *arg)
68	0	{
69	0	QUIC_TXPIM_PKT *pkt = arg;
70	0	QUIC_FIFD *fifd = pkt->fifd;
71	0	const QUIC_TXPIM_CHUNK *chunks = ossl_quic_txpim_pkt_get_chunks(pkt);
72	0	size_t i, num_chunks = ossl_quic_txpim_pkt_get_num_chunks(pkt);
73	0	QUIC_SSTREAM *sstream;
74	0	QUIC_CFQ_ITEM cfq_item, cfq_item_next;
75
76		/* STREAM and CRYPTO stream chunks, FINs and stream FC frames */
77	0	for (i = 0; i < num_chunks; ++i) {
78	0	sstream = fifd->get_sstream_by_id(chunks[i].stream_id,
79	0	pkt->ackm_pkt.pkt_space,
80	0	fifd->get_sstream_by_id_arg);
81	0	if (sstream == NULL)
82	0	continue;
83
84	0	if (chunks[i].end >= chunks[i].start)
85		/* coverity[check_return]: Best effort - we cannot fail here. */
86	0	ossl_quic_sstream_mark_acked(sstream,
87	0	chunks[i].start, chunks[i].end);
88
89	0	if (chunks[i].has_fin && chunks[i].stream_id != UINT64_MAX)
90	0	ossl_quic_sstream_mark_acked_fin(sstream);
91
92	0	if (chunks[i].has_stop_sending && chunks[i].stream_id != UINT64_MAX)
93	0	fifd->confirm_frame(OSSL_QUIC_FRAME_TYPE_STOP_SENDING,
94	0	chunks[i].stream_id, pkt,
95	0	fifd->confirm_frame_arg);
96
97	0	if (chunks[i].has_reset_stream && chunks[i].stream_id != UINT64_MAX)
98	0	fifd->confirm_frame(OSSL_QUIC_FRAME_TYPE_RESET_STREAM,
99	0	chunks[i].stream_id, pkt,
100	0	fifd->confirm_frame_arg);
101
102	0	if (ossl_quic_sstream_is_totally_acked(sstream))
103	0	fifd->sstream_updated(chunks[i].stream_id, fifd->sstream_updated_arg);
104	0	}
105
106		/* GCR */
107	0	for (cfq_item = pkt->retx_head; cfq_item != NULL; cfq_item = cfq_item_next) {
108	0	cfq_item_next = cfq_item->pkt_next;
109	0	ossl_quic_cfq_release(fifd->cfq, cfq_item);
110	0	}
111
112	0	ossl_quic_txpim_pkt_release(fifd->txpim, pkt);
113	0	}
114
115		static QLOG fifd_get_qlog(QUIC_FIFD fifd)
116	0	{
117	0	if (fifd->get_qlog_cb == NULL)
118	0	return NULL;
119
120	0	return fifd->get_qlog_cb(fifd->get_qlog_cb_arg);
121	0	}
122
123		static void on_lost(void *arg)
124	0	{
125	0	QUIC_TXPIM_PKT *pkt = arg;
126	0	QUIC_FIFD *fifd = pkt->fifd;
127	0	const QUIC_TXPIM_CHUNK *chunks = ossl_quic_txpim_pkt_get_chunks(pkt);
128	0	size_t i, num_chunks = ossl_quic_txpim_pkt_get_num_chunks(pkt);
129	0	QUIC_SSTREAM *sstream;
130	0	QUIC_CFQ_ITEM cfq_item, cfq_item_next;
131	0	int sstream_updated;
132
133	0	ossl_qlog_event_recovery_packet_lost(fifd_get_qlog(fifd), pkt);
134
135		/* STREAM and CRYPTO stream chunks, FIN and stream FC frames */
136	0	for (i = 0; i < num_chunks; ++i) {
137	0	sstream = fifd->get_sstream_by_id(chunks[i].stream_id,
138	0	pkt->ackm_pkt.pkt_space,
139	0	fifd->get_sstream_by_id_arg);
140	0	if (sstream == NULL)
141	0	continue;
142
143	0	sstream_updated = 0;
144
145	0	if (chunks[i].end >= chunks[i].start) {
146		/*
147		* Note: If the stream is being reset, we do not need to retransmit
148		* old data as this is pointless. In this case this will be handled
149		* by (sstream == NULL) above as the QSM will free the QUIC_SSTREAM
150		* and our call to get_sstream_by_id above will return NULL.
151		*/
152	0	ossl_quic_sstream_mark_lost(sstream,
153	0	chunks[i].start, chunks[i].end);
154	0	sstream_updated = 1;
155	0	}
156
157	0	if (chunks[i].has_fin && chunks[i].stream_id != UINT64_MAX) {
158	0	ossl_quic_sstream_mark_lost_fin(sstream);
159	0	sstream_updated = 1;
160	0	}
161
162	0	if (chunks[i].has_stop_sending && chunks[i].stream_id != UINT64_MAX)
163	0	fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_STOP_SENDING,
164	0	chunks[i].stream_id, pkt,
165	0	fifd->regen_frame_arg);
166
167	0	if (chunks[i].has_reset_stream && chunks[i].stream_id != UINT64_MAX)
168	0	fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_RESET_STREAM,
169	0	chunks[i].stream_id, pkt,
170	0	fifd->regen_frame_arg);
171
172		/*
173		* Inform caller that stream needs an FC frame.
174		*
175		* Note: We could track whether an FC frame was sent originally for the
176		* stream to determine if it really needs to be regenerated or not.
177		* However, if loss has occurred, it's probably better to ensure the
178		* peer has up-to-date flow control data for the stream. Given that
179		* these frames are extremely small, we may as well always send it when
180		* handling loss.
181		*/
182	0	fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_MAX_STREAM_DATA,
183	0	chunks[i].stream_id,
184	0	pkt,
185	0	fifd->regen_frame_arg);
186
187	0	if (sstream_updated && chunks[i].stream_id != UINT64_MAX)
188	0	fifd->sstream_updated(chunks[i].stream_id,
189	0	fifd->sstream_updated_arg);
190	0	}
191
192		/* GCR */
193	0	for (cfq_item = pkt->retx_head; cfq_item != NULL; cfq_item = cfq_item_next) {
194	0	cfq_item_next = cfq_item->pkt_next;
195	0	ossl_quic_cfq_mark_lost(fifd->cfq, cfq_item, UINT32_MAX);
196	0	}
197
198		/* Regenerate flag frames */
199	0	if (pkt->had_handshake_done_frame)
200	0	fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_HANDSHAKE_DONE,
201	0	UINT64_MAX, pkt,
202	0	fifd->regen_frame_arg);
203
204	0	if (pkt->had_max_data_frame)
205	0	fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_MAX_DATA,
206	0	UINT64_MAX, pkt,
207	0	fifd->regen_frame_arg);
208
209	0	if (pkt->had_max_streams_bidi_frame)
210	0	fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_MAX_STREAMS_BIDI,
211	0	UINT64_MAX, pkt,
212	0	fifd->regen_frame_arg);
213
214	0	if (pkt->had_max_streams_uni_frame)
215	0	fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_MAX_STREAMS_UNI,
216	0	UINT64_MAX, pkt,
217	0	fifd->regen_frame_arg);
218
219	0	if (pkt->had_ack_frame)
220		/*
221		* We always use the ACK_WITH_ECN frame type to represent the ACK frame
222		* type in our callback; we assume it is the caller's job to decide
223		* whether it wants to send ECN data or not.
224		*/
225	0	fifd->regen_frame(OSSL_QUIC_FRAME_TYPE_ACK_WITH_ECN,
226	0	UINT64_MAX, pkt,
227	0	fifd->regen_frame_arg);
228
229	0	ossl_quic_txpim_pkt_release(fifd->txpim, pkt);
230	0	}
231
232		static void on_discarded(void *arg)
233	0	{
234	0	QUIC_TXPIM_PKT *pkt = arg;
235	0	QUIC_FIFD *fifd = pkt->fifd;
236	0	QUIC_CFQ_ITEM cfq_item, cfq_item_next;
237
238		/*
239		* Don't need to do anything to SSTREAMs for STREAM and CRYPTO streams, as
240		* we assume caller will clean them up.
241		*/
242
243		/* GCR */
244	0	for (cfq_item = pkt->retx_head; cfq_item != NULL; cfq_item = cfq_item_next) {
245	0	cfq_item_next = cfq_item->pkt_next;
246	0	ossl_quic_cfq_release(fifd->cfq, cfq_item);
247	0	}
248
249	0	ossl_quic_txpim_pkt_release(fifd->txpim, pkt);
250	0	}
251
252		int ossl_quic_fifd_pkt_commit(QUIC_FIFD fifd, QUIC_TXPIM_PKT pkt)
253	0	{
254	0	QUIC_CFQ_ITEM *cfq_item;
255	0	const QUIC_TXPIM_CHUNK *chunks;
256	0	size_t i, num_chunks;
257	0	QUIC_SSTREAM *sstream;
258
259	0	pkt->fifd = fifd;
260
261	0	pkt->ackm_pkt.on_lost = on_lost;
262	0	pkt->ackm_pkt.on_acked = on_acked;
263	0	pkt->ackm_pkt.on_discarded = on_discarded;
264	0	pkt->ackm_pkt.cb_arg = pkt;
265
266	0	ossl_list_tx_history_init_elem(&pkt->ackm_pkt);
267	0	pkt->ackm_pkt.anext = pkt->ackm_pkt.lnext = NULL;
268
269		/*
270		* Mark the CFQ items which have been added to this packet as having been
271		* transmitted.
272		*/
273	0	for (cfq_item = pkt->retx_head;
274	0	cfq_item != NULL;
275	0	cfq_item = cfq_item->pkt_next)
276	0	ossl_quic_cfq_mark_tx(fifd->cfq, cfq_item);
277
278		/*
279		* Mark the send stream chunks which have been added to the packet as having
280		* been transmitted.
281		*/
282	0	chunks = ossl_quic_txpim_pkt_get_chunks(pkt);
283	0	num_chunks = ossl_quic_txpim_pkt_get_num_chunks(pkt);
284	0	for (i = 0; i < num_chunks; ++i) {
285	0	sstream = fifd->get_sstream_by_id(chunks[i].stream_id,
286	0	pkt->ackm_pkt.pkt_space,
287	0	fifd->get_sstream_by_id_arg);
288	0	if (sstream == NULL)
289	0	continue;
290
291	0	if (chunks[i].end >= chunks[i].start
292	0	&& !ossl_quic_sstream_mark_transmitted(sstream,
293	0	chunks[i].start,
294	0	chunks[i].end))
295	0	return 0;
296
297	0	if (chunks[i].has_fin
298	0	&& !ossl_quic_sstream_mark_transmitted_fin(sstream,
299	0	chunks[i].end + 1))
300	0	return 0;
301	0	}
302
303		/* Inform the ACKM. */
304	0	return ossl_ackm_on_tx_packet(fifd->ackm, &pkt->ackm_pkt);
305	0	}
306
307		void ossl_quic_fifd_set_qlog_cb(QUIC_FIFD fifd, QLOG (get_qlog_cb)(void arg),
308		void *get_qlog_cb_arg)
309	0	{
310	0	fifd->get_qlog_cb = get_qlog_cb;
311	0	fifd->get_qlog_cb_arg = get_qlog_cb_arg;
312	0	}