MINOR: stream-int/conn-stream: Move stream_int_notify() in the conn-stream scope

stream_int_notify() is renamed cs_notify() and is updated to manipulate a
conn-stream instead of a stream-interface.
diff --git a/src/stream_interface.c b/src/stream_interface.c
index f5b7b77..ed0f7ca 100644
--- a/src/stream_interface.c
+++ b/src/stream_interface.c
@@ -45,7 +45,7 @@
 static void cs_conn_read0(struct conn_stream *cs);
 
 /* post-IO notification callback */
-static void stream_int_notify(struct stream_interface *si);
+static void cs_notify(struct conn_stream *cs);
 
 struct data_cb si_conn_cb = {
 	.wake    = si_cs_process,
@@ -92,20 +92,20 @@
  * It should not be called from within the stream itself, cs_update()
  * is designed for this.
  */
-static void stream_int_notify(struct stream_interface *si)
+static void cs_notify(struct conn_stream *cs)
 {
-	struct channel *ic = si_ic(si);
-	struct channel *oc = si_oc(si);
-	struct stream_interface *sio = si_opposite(si);
-	struct task *task = si_task(si);
+	struct channel *ic = cs_ic(cs);
+	struct channel *oc = cs_oc(cs);
+	struct conn_stream *cso = cs_opposite(cs);
+	struct task *task = cs_strm_task(cs);
 
 	/* process consumer side */
 	if (channel_is_empty(oc)) {
-		struct connection *conn = cs_conn(si->cs);
+		struct connection *conn = cs_conn(cs);
 
 		if (((oc->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW) &&
-		    (si->cs->state == CS_ST_EST) && (!conn || !(conn->flags & (CO_FL_WAIT_XPRT | CO_FL_EARLY_SSL_HS))))
-			cs_shutw(si->cs);
+		    (cs->state == CS_ST_EST) && (!conn || !(conn->flags & (CO_FL_WAIT_XPRT | CO_FL_EARLY_SSL_HS))))
+			cs_shutw(cs);
 		oc->wex = TICK_ETERNITY;
 	}
 
@@ -113,9 +113,9 @@
 	 * we're about to close and can't expect more data if SHUTW_NOW is there.
 	 */
 	if (!(oc->flags & (CF_SHUTW|CF_SHUTW_NOW)))
-		si->flags |= SI_FL_WAIT_DATA;
+		cs->si->flags |= SI_FL_WAIT_DATA;
 	else if ((oc->flags & (CF_SHUTW|CF_SHUTW_NOW)) == CF_SHUTW_NOW)
-		si->flags &= ~SI_FL_WAIT_DATA;
+		cs->si->flags &= ~SI_FL_WAIT_DATA;
 
 	/* update OC timeouts and wake the other side up if it's waiting for room */
 	if (oc->flags & CF_WRITE_ACTIVITY) {
@@ -124,15 +124,15 @@
 			if (tick_isset(oc->wex))
 				oc->wex = tick_add_ifset(now_ms, oc->wto);
 
-		if (!(si->cs->flags & CS_FL_INDEP_STR))
+		if (!(cs->flags & CS_FL_INDEP_STR))
 			if (tick_isset(ic->rex))
 				ic->rex = tick_add_ifset(now_ms, ic->rto);
 	}
 
 	if (oc->flags & CF_DONT_READ)
-		si_rx_chan_blk(sio);
+		si_rx_chan_blk(cso->si);
 	else
-		si_rx_chan_rdy(sio);
+		si_rx_chan_rdy(cso->si);
 
 	/* Notify the other side when we've injected data into the IC that
 	 * needs to be forwarded. We can do fast-forwarding as soon as there
@@ -146,7 +146,7 @@
 	 * an HTTP parser might need more data to complete the parsing.
 	 */
 	if (!channel_is_empty(ic) &&
-	    (sio->flags & SI_FL_WAIT_DATA) &&
+	    (cso->si->flags & SI_FL_WAIT_DATA) &&
 	    (!(ic->flags & CF_EXPECT_MORE) || c_full(ic) || ci_data(ic) == 0 || ic->pipe)) {
 		int new_len, last_len;
 
@@ -154,7 +154,7 @@
 		if (ic->pipe)
 			last_len += ic->pipe->data;
 
-		cs_chk_snd(sio->cs);
+		cs_chk_snd(cso);
 
 		new_len = co_data(ic);
 		if (ic->pipe)
@@ -164,16 +164,16 @@
 		 * buffer or in the pipe.
 		 */
 		if (new_len < last_len)
-			si_rx_room_rdy(si);
+			si_rx_room_rdy(cs->si);
 	}
 
 	if (!(ic->flags & CF_DONT_READ))
-		si_rx_chan_rdy(si);
+		si_rx_chan_rdy(cs->si);
 
-	cs_chk_rcv(si->cs);
-	cs_chk_rcv(sio->cs);
+	cs_chk_rcv(cs);
+	cs_chk_rcv(cso);
 
-	if (si_rx_blocked(si)) {
+	if (si_rx_blocked(cs->si)) {
 		ic->rex = TICK_ETERNITY;
 	}
 	else if ((ic->flags & (CF_SHUTR|CF_READ_PARTIAL)) == CF_READ_PARTIAL) {
@@ -185,10 +185,10 @@
 	/* wake the task up only when needed */
 	if (/* changes on the production side */
 	    (ic->flags & (CF_READ_NULL|CF_READ_ERROR)) ||
-	    !cs_state_in(si->cs->state, CS_SB_CON|CS_SB_RDY|CS_SB_EST) ||
-	    (si->cs->endp->flags & CS_EP_ERROR) ||
+	    !cs_state_in(cs->state, CS_SB_CON|CS_SB_RDY|CS_SB_EST) ||
+	    (cs->endp->flags & CS_EP_ERROR) ||
 	    ((ic->flags & CF_READ_PARTIAL) &&
-	     ((ic->flags & CF_EOI) || !ic->to_forward || sio->cs->state != CS_ST_EST)) ||
+	     ((ic->flags & CF_EOI) || !ic->to_forward || cso->state != CS_ST_EST)) ||
 
 	    /* changes on the consumption side */
 	    (oc->flags & (CF_WRITE_NULL|CF_WRITE_ERROR)) ||
@@ -196,7 +196,7 @@
 	     ((oc->flags & CF_SHUTW) ||
 	      (((oc->flags & CF_WAKE_WRITE) ||
 		!(oc->flags & (CF_AUTO_CLOSE|CF_SHUTW_NOW|CF_SHUTW))) &&
-	       (sio->cs->state != CS_ST_EST ||
+	       (cso->state != CS_ST_EST ||
 	        (channel_is_empty(oc) && !oc->to_forward)))))) {
 		task_wakeup(task, TASK_WOKEN_IO);
 	}
@@ -208,7 +208,7 @@
 
 		task->expire = tick_first(task->expire, ic->analyse_exp);
 		task->expire = tick_first(task->expire, oc->analyse_exp);
-		task->expire = tick_first(task->expire, __cs_strm(si->cs)->conn_exp);
+		task->expire = tick_first(task->expire, __cs_strm(cs)->conn_exp);
 
 		task_queue(task);
 	}
@@ -301,7 +301,7 @@
 	 * pending data, then possibly wake the stream up based on the new
 	 * stream-int status.
 	 */
-	stream_int_notify(si);
+	cs_notify(cs);
 	stream_release_buffers(si_strm(si));
 	return 0;
 }
@@ -931,10 +931,10 @@
 		si_rx_endp_more(cs->si);
 
 	/* update the stream-int, channels, and possibly wake the stream up */
-	stream_int_notify(cs->si);
+	cs_notify(cs);
 	stream_release_buffers(__cs_strm(cs));
 
-	/* stream_int_notify may have passed through chk_snd and released some
+	/* cs_notify may have passed through chk_snd and released some
 	 * RXBLK flags. Process_stream will consider those flags to wake up the
 	 * appctx but in the case the task is not in runqueue we may have to
 	 * wakeup the appctx immediately.