MINOR: connections: Add a new xprt method, add_xprt().

Add a new method to xprt_ops, add_xprt(), that changes the underlying
xprt to the one provided, and optionally provide the old one.
This commit is contained in:
Olivier Houchard 2019-05-27 19:50:12 +02:00 committed by Olivier Houchard
parent 5149b59851
commit 2e055483ff
2 changed files with 18 additions and 0 deletions

View File

@ -334,6 +334,7 @@ struct xprt_ops {
int (*subscribe)(struct connection *conn, void *xprt_ctx, int event_type, void *param); /* Subscribe to events, such as "being able to send" */
int (*unsubscribe)(struct connection *conn, void *xprt_ctx, int event_type, void *param); /* Unsubscribe to events */
int (*remove_xprt)(struct connection *conn, void *xprt_ctx, void *toremove_ctx, const struct xprt_ops *newops, void *newctx); /* Remove an xprt from the connection, used by temporary xprt such as the handshake one */
int (*add_xprt)(struct connection *conn, void *xprt_ctx, void *toadd_ctx, const struct xprt_ops *toadd_ops, void **oldxprt_ctx, const struct xprt_ops **oldxprt_ops); /* Add a new XPRT as the new xprt, and return the old one */
};
/* mux_ops describes the mux operations, which are to be performed at the

View File

@ -5630,6 +5630,22 @@ static int ssl_unsubscribe(struct connection *conn, void *xprt_ctx, int event_ty
return 0;
}
/* Use the provided XPRT as an underlying XPRT, and provide the old one.
* Returns 0 on success, and non-zero on failure.
*/
static int ssl_add_xprt(struct connection *conn, void *xprt_ctx, void *toadd_ctx, const struct xprt_ops *toadd_ops, void **oldxprt_ctx, const struct xprt_ops **oldxprt_ops)
{
struct ssl_sock_ctx *ctx = xprt_ctx;
if (oldxprt_ops != NULL)
*oldxprt_ops = ctx->xprt;
if (oldxprt_ctx != NULL)
*oldxprt_ctx = ctx->xprt_ctx;
ctx->xprt = toadd_ops;
ctx->xprt_ctx = toadd_ctx;
return 0;
}
/* Remove the specified xprt. If if it our underlying XPRT, remove it and
* return 0, otherwise just call the remove_xprt method from the underlying
* XPRT.
@ -9842,6 +9858,7 @@ static struct xprt_ops ssl_sock = {
.subscribe = ssl_subscribe,
.unsubscribe = ssl_unsubscribe,
.remove_xprt = ssl_remove_xprt,
.add_xprt = ssl_add_xprt,
.rcv_pipe = NULL,
.snd_pipe = NULL,
.shutr = NULL,