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MINOR: raw_sock: make use of CO_FL_WILL_UPDATE

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Now when raw_sock_{to,from}_{pipe,buf} are called, if the connection
doesn't feature CO_FL_WILL_UPDATE, they will first retrieve the updated
flags using conn_refresh_polling_flags() before changing any flag, then
call conn_cond_update_sock_polling() before leaving, to commit such
changes. Note that the only real call to one of the __conn_* functions
is in fact in conn_sock_read0() which is called from here.
This commit is contained in:
Willy Tarreau 2017-10-25 09:30:13 +02:00
parent 7b271b214f
commit 256b9c5993
1 changed files with 20 additions and 5 deletions
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25
src/raw_sock.c
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@ -81,6 +81,7 @@ int raw_sock_to_pipe(struct connection *conn, struct pipe *pipe, unsigned int co
if (!fd_recv_ready(conn->handle.fd))
return 0;
conn_refresh_polling_flags(conn);
errno = 0;
/* Under Linux, if FD_POLL_HUP is set, we have reached the end.
@ -96,7 +97,7 @@ int raw_sock_to_pipe(struct connection *conn, struct pipe *pipe, unsigned int co
if ((fdtab[conn->handle.fd].ev & FD_POLL_ERR) && (conn->flags & CO_FL_WAIT_L4_CONN)) {
conn->flags |= CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH;
errno = 0; /* let the caller do a getsockopt() if it wants it */
return retval;
goto leave;
}
}
@ -156,7 +157,8 @@ int raw_sock_to_pipe(struct connection *conn, struct pipe *pipe, unsigned int co
* We can safely return -1 since there is no
* chance that any data has been piped yet.
*/
return -1;
retval = -1;
goto leave;
}
else if (errno == EINTR) {
/* try again */
@ -183,12 +185,15 @@ int raw_sock_to_pipe(struct connection *conn, struct pipe *pipe, unsigned int co
if (unlikely(conn->flags & CO_FL_WAIT_L4_CONN) && retval)
conn->flags &= ~CO_FL_WAIT_L4_CONN;
leave:
conn_cond_update_sock_polling(conn);
return retval;
out_read0:
conn_sock_read0(conn);
conn->flags &= ~CO_FL_WAIT_L4_CONN;
return retval;
goto leave;
}
/* Send as many bytes as possible from the pipe to the connection's socket.
@ -203,6 +208,7 @@ int raw_sock_from_pipe(struct connection *conn, struct pipe *pipe)
if (!fd_send_ready(conn->handle.fd))
return 0;
conn_refresh_polling_flags(conn);
done = 0;
while (pipe->data) {
ret = splice(pipe->cons, NULL, conn->handle.fd, NULL, pipe->data,
@ -226,6 +232,8 @@ int raw_sock_from_pipe(struct connection *conn, struct pipe *pipe)
}
if (unlikely(conn->flags & CO_FL_WAIT_L4_CONN) && done)
conn->flags &= ~CO_FL_WAIT_L4_CONN;
conn_cond_update_sock_polling(conn);
return done;
}
@ -253,6 +261,7 @@ static int raw_sock_to_buf(struct connection *conn, struct buffer *buf, int coun
if (!fd_recv_ready(conn->handle.fd))
return 0;
conn_refresh_polling_flags(conn);
errno = 0;
if (unlikely(!(fdtab[conn->handle.fd].ev & FD_POLL_IN))) {
@ -263,7 +272,7 @@ static int raw_sock_to_buf(struct connection *conn, struct buffer *buf, int coun
/* report error on POLL_ERR before connection establishment */
if ((fdtab[conn->handle.fd].ev & FD_POLL_ERR) && (conn->flags & CO_FL_WAIT_L4_CONN)) {
conn->flags |= CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH;
return done;
goto leave;
}
}
@ -329,6 +338,9 @@ static int raw_sock_to_buf(struct connection *conn, struct buffer *buf, int coun
if (unlikely(conn->flags & CO_FL_WAIT_L4_CONN) && done)
conn->flags &= ~CO_FL_WAIT_L4_CONN;
leave:
conn_cond_update_sock_polling(conn);
return done;
read0:
@ -344,7 +356,7 @@ static int raw_sock_to_buf(struct connection *conn, struct buffer *buf, int coun
*/
if (unlikely(fdtab[conn->handle.fd].ev & FD_POLL_ERR))
conn->flags |= CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH;
return done;
goto leave;
}
@ -368,6 +380,7 @@ static int raw_sock_from_buf(struct connection *conn, struct buffer *buf, int fl
if (!fd_send_ready(conn->handle.fd))
return 0;
conn_refresh_polling_flags(conn);
done = 0;
/* send the largest possible block. For this we perform only one call
* to send() unless the buffer wraps and we exactly fill the first hunk,
@ -409,6 +422,8 @@ static int raw_sock_from_buf(struct connection *conn, struct buffer *buf, int fl
}
if (unlikely(conn->flags & CO_FL_WAIT_L4_CONN) && done)
conn->flags &= ~CO_FL_WAIT_L4_CONN;
conn_cond_update_sock_polling(conn);
return done;
}