diff options
Diffstat (limited to 'include/internal/quic_demux.h')
| -rw-r--r-- | include/internal/quic_demux.h | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/include/internal/quic_demux.h b/include/internal/quic_demux.h index dba669645b..1e5a85f9d7 100644 --- a/include/internal/quic_demux.h +++ b/include/internal/quic_demux.h @@ -169,8 +169,9 @@ typedef struct quic_demux_st QUIC_DEMUX; * to mutate this buffer; once the demuxer calls this callback, it will never * read the buffer again. * - * The callee must arrange for ossl_quic_demux_release_urxe to be called on the URXE - * at some point in the future (this need not be before the callback returns). + * The callee must arrange for ossl_quic_demux_release_urxe or + * ossl_quic_demux_reinject_urxe to be called on the URXE at some point in the + * future (this need not be before the callback returns). * * At the time the callback is made, the URXE will not be in any queue, * therefore the callee can use the prev and next fields as it wishes. @@ -256,6 +257,20 @@ void ossl_quic_demux_unregister_by_cb(QUIC_DEMUX *demux, void *cb_arg); /* + * Set the default packet handler. This is used for incoming packets which don't + * match a registered DCID. This is only needed for servers. If a default packet + * handler is not set, a packet which doesn't match a registered DCID is + * silently dropped. A default packet handler may be unset by passing NULL. + * + * The handler is responsible for ensuring that ossl_quic_demux_reinject_urxe or + * ossl_quic_demux_release_urxe is called on the passed packet at some point in + * the future, which may or may not be before the handler returns. + */ +void ossl_quic_demux_set_default_handler(QUIC_DEMUX *demux, + ossl_quic_demux_cb_fn *cb, + void *cb_arg); + +/* * Releases a URXE back to the demuxer. No reference must be made to the URXE or * its buffer after calling this function. The URXE must not be in any queue; * that is, its prev and next pointers must be NULL. @@ -264,6 +279,20 @@ void ossl_quic_demux_release_urxe(QUIC_DEMUX *demux, QUIC_URXE *e); /* + * Reinjects a URXE which was issued to a registered DCID callback or the + * default packet handler callback back into the pending queue. This is useful + * when a packet has been handled by the default packet handler callback such + * that a DCID has now been registered and can be dispatched normally by DCID. + * Once this has been called, the caller must not touch the URXE anymore and + * must not also call ossl_quic_demux_release_urxe(). + * + * The URXE is reinjected at the head of the queue, so it will be reprocessed + * immediately. + */ +void ossl_quic_demux_reinject_urxe(QUIC_DEMUX *demux, + QUIC_URXE *e); + +/* * Process any unprocessed RX'd datagrams, by calling registered callbacks by * connection ID, reading more datagrams from the BIO if necessary. * |