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MINOR: quic: Remove the packet number space TX MT_LIST

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There is no need to use an MT_LIST to store frames to send from a packet
number space. This is a reminiscence for multi-threading support for the TX part.
This commit is contained in:
Frédéric Lécaille 2022-01-14 20:23:22 +01:00 committed by Amaury Denoyelle
parent 7065dd0895
commit 82468ea98e
5 changed files with 19 additions and 26 deletions
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1
include/haproxy/quic_frame-t.h
View File

@ -217,7 +217,6 @@ struct quic_connection_close_app {
};
struct quic_frame {
struct mt_list mt_list;
struct list list;
unsigned char type;
union {

2
include/haproxy/xprt_quic-t.h
View File

@ -391,7 +391,7 @@ struct quic_arngs {
struct quic_pktns {
struct {
/* List of frames to send. */
struct mt_list frms;
struct list frms;
/* Next packet number to use for transmissions. */
int64_t next_pn;
/* Largest acked sent packet. */

2
include/haproxy/xprt_quic.h
View File

@ -938,7 +938,7 @@ static inline int quic_transport_params_store(struct quic_conn *conn, int server
*/
static inline void quic_pktns_init(struct quic_pktns *pktns)
{
MT_LIST_INIT(&pktns->tx.frms);
LIST_INIT(&pktns->tx.frms);
pktns->tx.next_pn = -1;
pktns->tx.pkts = EB_ROOT_UNIQUE;
pktns->tx.largest_acked_pn = -1;

2
src/mux_quic.c
View File

@ -283,7 +283,7 @@ static int qcs_push_frame(struct qcs *qcs, struct buffer *payload, int fin, uint
frm->stream.len = total;
}
MT_LIST_APPEND(&qel->pktns->tx.frms, &frm->mt_list);
LIST_APPEND(&qel->pktns->tx.frms, &frm->list);
out:
fprintf(stderr, "%s: total=%d fin=%d id=%llu offset=%lu\n",
__func__, total, fin, (ull)qcs->by_id.key, offset);

38
src/xprt_quic.c
View File

@ -996,13 +996,11 @@ static int quic_crypto_data_cpy(struct quic_enc_level *qel,
if (!len) {
struct quic_frame *frm;
struct quic_frame *found = NULL;
struct mt_list *tmp1, tmp2;
/* There is at most one CRYPTO frame in this packet number
* space. Let's look for it.
*/
mt_list_for_each_entry_safe(frm, &qel->pktns->tx.frms,
mt_list, tmp1, tmp2) {
list_for_each_entry(frm, &qel->pktns->tx.frms, list) {
if (frm->type != QUIC_FT_CRYPTO)
continue;
@ -1023,7 +1021,7 @@ static int quic_crypto_data_cpy(struct quic_enc_level *qel,
frm->crypto.offset = cf_offset;
frm->crypto.len = cf_len;
frm->crypto.qel = qel;
MT_LIST_APPEND(&qel->pktns->tx.frms, &frm->mt_list);
LIST_APPEND(&qel->pktns->tx.frms, &frm->list);
}
}
@ -1517,7 +1515,7 @@ static inline struct eb64_node *qc_ackrng_pkts(struct quic_conn *qc,
*/
static inline void qc_requeue_nacked_pkt_tx_frms(struct quic_conn *qc,
struct list *pkt_frm_list,
struct mt_list *pktns_frm_list)
struct list *pktns_frm_list)
{
struct quic_frame *frm, *frmbak;
struct list tmp = LIST_HEAD_INIT(tmp);
@ -1525,13 +1523,10 @@ static inline void qc_requeue_nacked_pkt_tx_frms(struct quic_conn *qc,
list_for_each_entry_safe(frm, frmbak, pkt_frm_list, list) {
LIST_DELETE(&frm->list);
TRACE_PROTO("to resend frame", QUIC_EV_CONN_PRSAFRM, qc, frm);
LIST_INSERT(&tmp, &frm->list);
LIST_APPEND(&tmp, &frm->list);
}
list_for_each_entry(frm, &tmp, list) {
LIST_DELETE(&frm->list);
MT_LIST_INSERT(pktns_frm_list, &frm->mt_list);
}
LIST_SPLICE(pktns_frm_list, &tmp);
}
/* Free the TX packets of <pkts> list */
@ -2506,7 +2501,7 @@ static int qc_prep_pkts(struct quic_conn *qc, struct qring *qr,
*/
if (!(qel->tls_ctx.tx.flags & QUIC_FL_TLS_SECRETS_SET) ||
(!cc && !ack && !probe &&
(MT_LIST_ISEMPTY(&qel->pktns->tx.frms) ||
(LIST_ISEMPTY(&qel->pktns->tx.frms) ||
qc->path->prep_in_flight >= qc->path->cwnd))) {
TRACE_DEVEL("nothing more to do", QUIC_EV_CONN_PHPKTS, qc);
/* Set the current datagram as prepared into <cbuf> if
@ -2581,13 +2576,13 @@ static int qc_prep_pkts(struct quic_conn *qc, struct qring *qr,
* select the next level.
*/
if ((tel == QUIC_TLS_ENC_LEVEL_INITIAL || tel == QUIC_TLS_ENC_LEVEL_HANDSHAKE) &&
(MT_LIST_ISEMPTY(&qel->pktns->tx.frms))) {
(LIST_ISEMPTY(&qel->pktns->tx.frms))) {
/* If QUIC_TLS_ENC_LEVEL_HANDSHAKE was already reached let's try QUIC_TLS_ENC_LEVEL_APP */
if (tel == QUIC_TLS_ENC_LEVEL_HANDSHAKE && next_tel == tel)
next_tel = QUIC_TLS_ENC_LEVEL_APP;
tel = next_tel;
qel = &qc->els[tel];
if (!MT_LIST_ISEMPTY(&qel->pktns->tx.frms)) {
if (!LIST_ISEMPTY(&qel->pktns->tx.frms)) {
/* If there is data for the next level, do not
* consume a datagram.
*/
@ -2732,7 +2727,7 @@ static int quic_build_post_handshake_frames(struct quic_conn *qc)
return 0;
frm->type = QUIC_FT_HANDSHAKE_DONE;
MT_LIST_APPEND(&qel->pktns->tx.frms, &frm->mt_list);
LIST_APPEND(&qel->pktns->tx.frms, &frm->list);
}
for (i = 1; i < qc->tx.params.active_connection_id_limit; i++) {
@ -2753,7 +2748,7 @@ static int quic_build_post_handshake_frames(struct quic_conn *qc)
HA_RWLOCK_WRUNLOCK(QUIC_LOCK, &l->rx.cids_lock);
quic_connection_id_to_frm_cpy(frm, cid);
MT_LIST_APPEND(&qel->pktns->tx.frms, &frm->mt_list);
LIST_APPEND(&qel->pktns->tx.frms, &frm->list);
}
HA_ATOMIC_OR(&qc->flags, QUIC_FL_POST_HANDSHAKE_FRAMES_BUILT);
@ -4616,8 +4611,7 @@ static inline int qc_build_frms(struct quic_tx_packet *pkt,
struct quic_conn *qc)
{
int ret;
struct quic_frame *cf;
struct mt_list *tmp1, tmp2;
struct quic_frame *cf, *cfbak;
size_t remain = quic_path_prep_data(qc->path);
ret = 0;
@ -4631,7 +4625,7 @@ static inline int qc_build_frms(struct quic_tx_packet *pkt,
room = QUIC_MIN(room, quic_path_prep_data(qc->path) - headlen);
TRACE_PROTO("************** frames build (headlen)",
QUIC_EV_CONN_BCFRMS, qc, &headlen);
mt_list_for_each_entry_safe(cf, &qel->pktns->tx.frms, mt_list, tmp1, tmp2) {
list_for_each_entry_safe(cf, cfbak, &qel->pktns->tx.frms, list) {
/* header length, data length, frame length. */
size_t hlen, dlen, dlen_sz, avail_room, flen;
@ -4662,7 +4656,7 @@ static inline int qc_build_frms(struct quic_tx_packet *pkt,
room -= flen;
if (dlen == cf->crypto.len) {
/* <cf> CRYPTO data have been consumed. */
MT_LIST_DELETE_SAFE(tmp1);
LIST_DELETE(&cf->list);
LIST_APPEND(&pkt->frms, &cf->list);
}
else {
@ -4725,7 +4719,7 @@ static inline int qc_build_frms(struct quic_tx_packet *pkt,
room -= flen;
if (dlen == cf->stream.len) {
/* <cf> STREAM data have been consumed. */
MT_LIST_DELETE_SAFE(tmp1);
LIST_DELETE(&cf->list);
LIST_APPEND(&pkt->frms, &cf->list);
}
else {
@ -4765,7 +4759,7 @@ static inline int qc_build_frms(struct quic_tx_packet *pkt,
*len += flen;
room -= flen;
MT_LIST_DELETE_SAFE(tmp1);
LIST_DELETE(&cf->list);
LIST_APPEND(&pkt->frms, &cf->list);
break;
}
@ -4862,7 +4856,7 @@ static int qc_do_build_pkt(unsigned char *pos, const unsigned char *end,
/* Length field value without the ack-eliciting frames. */
len = ack_frm_len + *pn_len;
len_frms = 0;
if (!cc && !MT_LIST_ISEMPTY(&qel->pktns->tx.frms)) {
if (!cc && !LIST_ISEMPTY(&qel->pktns->tx.frms)) {
ssize_t room = end - pos;
/* Initialize the length of the frames built below to <len>.