MINOR: mux-h2: remove the now unneeded conn_stream from the h2s

Since we always have a valid endpoint we can safely use it to access
the conn_stream and stop using h2s->cs. That's one less pointer to
care about.
This commit is contained in:
Willy Tarreau 2022-05-10 15:00:03 +02:00
parent b22b5f02af
commit cd6bb1a5e5

View File

@ -212,7 +212,6 @@ enum h2_ss {
* it is being processed in the internal HTTP representation (HTX).
*/
struct h2s {
struct conn_stream *cs;
struct cs_endpoint *endp;
struct session *sess;
struct h2c *h2c;
@ -531,7 +530,6 @@ static const struct cs_endpoint closed_ep = {
/* a dmumy closed stream */
static const struct h2s *h2_closed_stream = &(const struct h2s){
.cs = NULL,
.endp = (struct cs_endpoint *)&closed_ep,
.h2c = NULL,
.st = H2_SS_CLOSED,
@ -542,7 +540,6 @@ static const struct h2s *h2_closed_stream = &(const struct h2s){
/* a dmumy closed stream returning a PROTOCOL_ERROR error */
static const struct h2s *h2_error_stream = &(const struct h2s){
.cs = NULL,
.endp = (struct cs_endpoint *)&closed_ep,
.h2c = NULL,
.st = H2_SS_CLOSED,
@ -553,7 +550,6 @@ static const struct h2s *h2_error_stream = &(const struct h2s){
/* a dmumy closed stream returning a REFUSED_STREAM error */
static const struct h2s *h2_refused_stream = &(const struct h2s){
.cs = NULL,
.endp = (struct cs_endpoint *)&closed_ep,
.h2c = NULL,
.st = H2_SS_CLOSED,
@ -564,7 +560,6 @@ static const struct h2s *h2_refused_stream = &(const struct h2s){
/* and a dummy idle stream for use with any unannounced stream */
static const struct h2s *h2_idle_stream = &(const struct h2s){
.cs = NULL,
.endp = (struct cs_endpoint *)&closed_ep,
.h2c = NULL,
.st = H2_SS_IDLE,
@ -887,7 +882,7 @@ static int h2_buf_available(void *target)
}
if ((h2c->flags & H2_CF_DEM_SALLOC) &&
(h2s = h2c_st_by_id(h2c, h2c->dsi)) && h2s->cs &&
(h2s = h2c_st_by_id(h2c, h2c->dsi)) && h2s->endp->cs &&
b_alloc(&h2s->rxbuf)) {
h2c->flags &= ~H2_CF_DEM_SALLOC;
h2c_restart_reading(h2c, 1);
@ -1283,8 +1278,7 @@ static inline __maybe_unused void h2s_error(struct h2s *h2s, enum h2_err err)
h2s->errcode = err;
if (h2s->st < H2_SS_ERROR)
h2s->st = H2_SS_ERROR;
if (h2s->cs)
cs_ep_set_error(h2s->endp);
cs_ep_set_error(h2s->endp);
}
}
@ -1334,9 +1328,9 @@ static void __maybe_unused h2s_alert(struct h2s *h2s)
h2s_notify_recv(h2s);
h2s_notify_send(h2s);
}
else if (h2s->cs && h2s->cs->data_cb->wake != NULL) {
else if (h2s->endp->cs && h2s->endp->cs->data_cb->wake != NULL) {
TRACE_POINT(H2_EV_STRM_WAKE, h2s->h2c->conn, h2s);
h2s->cs->data_cb->wake(h2s->cs);
h2s->endp->cs->data_cb->wake(h2s->endp->cs);
}
TRACE_LEAVE(H2_EV_H2S_WAKE, h2s->h2c->conn, h2s);
@ -1490,7 +1484,7 @@ static inline void h2s_close(struct h2s *h2s)
h2s->h2c->nb_streams--;
if (!h2s->id)
h2s->h2c->nb_reserved--;
if (h2s->cs) {
if (h2s->endp->cs) {
if (!(h2s->endp->flags & CS_EP_EOS) && !b_data(&h2s->rxbuf))
h2s_notify_recv(h2s);
}
@ -1563,7 +1557,6 @@ static struct h2s *h2s_new(struct h2c *h2c, int id)
h2s->shut_tl->context = h2s;
LIST_INIT(&h2s->list);
h2s->h2c = h2c;
h2s->cs = NULL;
h2s->endp = NULL;
h2s->sws = 0;
h2s->flags = H2_SF_NONE;
@ -1636,10 +1629,9 @@ static struct h2s *h2c_frt_stream_new(struct h2c *h2c, int id, struct buffer *in
*/
sess->t_idle = tv_ms_elapsed(&sess->tv_accept, &now) - sess->t_handshake;
h2s->cs = cs_new_from_mux(h2s->endp, sess, input);
if (!h2s->cs) {
if (!cs_new_from_mux(h2s->endp, sess, input))
goto out_close;
}
h2c->nb_cs++;
/* We want the accept date presented to the next stream to be the one
@ -1701,7 +1693,6 @@ static struct h2s *h2c_bck_stream_new(struct h2c *h2c, struct conn_stream *cs, s
h2s = NULL;
goto out;
}
h2s->cs = cs;
h2s->endp = cs->endp;
h2s->sess = sess;
h2c->nb_cs++;
@ -2205,7 +2196,7 @@ static void h2s_wake_one_stream(struct h2s *h2s)
TRACE_ENTER(H2_EV_H2S_WAKE, h2c->conn, h2s);
if (!h2s->cs) {
if (!h2s->endp->cs) {
/* this stream was already orphaned */
h2s_destroy(h2s);
TRACE_DEVEL("leaving with no h2s", H2_EV_H2S_WAKE, h2c->conn);
@ -2758,7 +2749,7 @@ static int h2c_handle_rst_stream(struct h2c *h2c, struct h2s *h2s)
h2s->errcode = h2_get_n32(&h2c->dbuf, 0);
h2s_close(h2s);
if (h2s->cs) {
if (h2s->endp->cs) {
cs_ep_set_error(h2s->endp);
h2s_alert(h2s);
}
@ -2987,7 +2978,7 @@ static struct h2s *h2c_bck_handle_headers(struct h2c *h2c, struct h2s *h2s)
if (h2c->dff & H2_F_HEADERS_END_STREAM)
h2s->flags |= H2_SF_ES_RCVD;
if (h2s->cs && (h2s->endp->flags & CS_EP_ERROR) && h2s->st < H2_SS_ERROR)
if (h2s->endp->flags & CS_EP_ERROR && h2s->st < H2_SS_ERROR)
h2s->st = H2_SS_ERROR;
else if (h2s->flags & H2_SF_ES_RCVD) {
if (h2s->st == H2_SS_OPEN)
@ -3084,7 +3075,7 @@ static int h2c_handle_data(struct h2c *h2c, struct h2s *h2s)
/* call the upper layers to process the frame, then let the upper layer
* notify the stream about any change.
*/
if (!h2s->cs) {
if (!h2s->endp->cs) {
/* The upper layer has already closed, this may happen on
* 4xx/redirects during POST, or when receiving a response
* from an H2 server after the client has aborted.
@ -3483,7 +3474,7 @@ static void h2_process_demux(struct h2c *h2c)
*/
tmp_h2s = h2c_st_by_id(h2c, h2c->dsi);
if (tmp_h2s != h2s && h2s && h2s->cs &&
if (tmp_h2s != h2s && h2s && h2s->endp->cs &&
(b_data(&h2s->rxbuf) ||
h2c_read0_pending(h2c) ||
h2s->st == H2_SS_CLOSED ||
@ -3654,7 +3645,7 @@ static void h2_process_demux(struct h2c *h2c)
h2c->flags |= H2_CF_END_REACHED;
}
if (h2s && h2s->cs &&
if (h2s && h2s->endp->cs &&
(b_data(&h2s->rxbuf) ||
h2c_read0_pending(h2c) ||
h2s->st == H2_SS_CLOSED ||
@ -4111,7 +4102,7 @@ static int h2_process(struct h2c *h2c)
while (node) {
h2s = container_of(node, struct h2s, by_id);
if (h2s->cs && h2s->endp->flags & CS_EP_WAIT_FOR_HS)
if (h2s->endp->flags & CS_EP_WAIT_FOR_HS)
h2s_notify_recv(h2s);
node = eb32_next(node);
}
@ -4332,8 +4323,8 @@ static struct conn_stream *h2_get_first_cs(const struct connection *conn)
node = eb32_first(&h2c->streams_by_id);
while (node) {
h2s = container_of(node, struct h2s, by_id);
if (h2s->cs)
return h2s->cs;
if (h2s->endp->cs)
return h2s->endp->cs;
node = eb32_next(node);
}
return NULL;
@ -4395,7 +4386,6 @@ static void h2_detach(struct conn_stream *cs)
sess = h2s->sess;
h2c = h2s->h2c;
h2s->cs = NULL;
h2c->nb_cs--;
if (!h2c->nb_cs)
h2c->idle_start = now_ms;
@ -4682,7 +4672,7 @@ struct task *h2_deferred_shut(struct task *t, void *ctx, unsigned int state)
/* We're done trying to send, remove ourself from the send_list */
LIST_DEL_INIT(&h2s->list);
if (!h2s->cs) {
if (!h2s->endp->cs) {
h2s_destroy(h2s);
if (h2c_is_dead(h2c)) {
h2_release(h2c);
@ -5348,7 +5338,7 @@ static size_t h2s_frt_make_resp_headers(struct h2s *h2s, struct htx *htx)
break;
}
if (!h2s->cs || h2s->endp->flags & CS_EP_SHW) {
if (!h2s->endp->cs || h2s->endp->flags & CS_EP_SHW) {
/* Response already closed: add END_STREAM */
es_now = 1;
}
@ -5768,7 +5758,7 @@ static size_t h2s_bck_make_req_headers(struct h2s *h2s, struct htx *htx)
break;
}
if (!h2s->cs || h2s->endp->flags & CS_EP_SHW) {
if (!h2s->endp->cs || h2s->endp->flags & CS_EP_SHW) {
/* Request already closed: add END_STREAM */
es_now = 1;
}
@ -6737,7 +6727,7 @@ static int h2_show_fd(struct buffer *msg, struct connection *conn)
while (node) {
h2s = container_of(node, struct h2s, by_id);
tree_cnt++;
if (!h2s->cs)
if (!h2s->endp->cs)
orph_cnt++;
node = eb32_next(node);
}
@ -6765,10 +6755,10 @@ static int h2_show_fd(struct buffer *msg, struct connection *conn)
h2s, h2s->id, h2s_st_to_str(h2s->st), h2s->flags,
(unsigned int)b_data(&h2s->rxbuf), b_orig(&h2s->rxbuf),
(unsigned int)b_head_ofs(&h2s->rxbuf), (unsigned int)b_size(&h2s->rxbuf),
h2s->cs);
if (h2s->cs)
h2s->endp->cs);
if (h2s->endp->cs)
chunk_appendf(msg, "(.flg=0x%08x .app=%p)",
h2s->cs->flags, h2s->cs->app);
h2s->endp->cs->flags, h2s->endp->cs->app);
chunk_appendf(msg, "endp=%p", h2s->endp);
if (h2s->endp)