[MEDIUM] enable inter-stream_interface wakeup calls
By letting the producer tell the consumer there is data to check,
and the consumer tell the producer there is some space left again,
we can cut in half the number of session wakeups.
This is also an important starting point for future splicing support.
diff --git a/include/types/stream_interface.h b/include/types/stream_interface.h
index d34cfa4..bb4a9e3 100644
--- a/include/types/stream_interface.h
+++ b/include/types/stream_interface.h
@@ -78,6 +78,8 @@
unsigned int exp; /* wake up time for connect, queue, turn-around, ... */
void (*shutr)(struct stream_interface *); /* shutr function */
void (*shutw)(struct stream_interface *); /* shutw function */
+ void (*chk_rcv)(struct stream_interface *);/* chk_rcv function */
+ void (*chk_snd)(struct stream_interface *);/* chk_snd function */
struct buffer *ib, *ob; /* input and output buffers */
unsigned int err_type; /* first error detected, one of SI_ET_* */
void *err_loc; /* commonly the server, NULL when SI_ET_NONE */