82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/* Copyright (c) 2017 LiteSpeed Technologies Inc. See LICENSE. */
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/*
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* lsquic_data_in_if.h -- DATA in interface
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*/
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#ifndef LSQUIC_DATA_IN_IF_H
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#define LSQUIC_DATA_IN_IF_H 1
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struct data_frame;
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struct data_in;
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struct lsquic_conn_public;
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struct stream_frame;
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enum ins_frame
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{
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INS_FRAME_OK,
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INS_FRAME_ERR,
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INS_FRAME_DUP,
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};
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struct data_in_iface
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{
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void
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(*di_destroy) (struct data_in *);
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int
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(*di_empty) (struct data_in *);
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/* The caller releases control of stream frame. Do not reference it
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* after the call.
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*/
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enum ins_frame
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(*di_insert_frame) (struct data_in *, struct stream_frame *,
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uint64_t read_offset);
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struct data_frame *
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(*di_get_frame) (struct data_in *, uint64_t read_offset);
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void
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(*di_frame_done) (struct data_in *, struct data_frame *);
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/* Creates a new data_in object, feeds its stream frames to it, deletes
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* itself and returns the new object.
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*/
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struct data_in *
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(*di_switch_impl) (struct data_in *, uint64_t read_offset);
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};
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struct data_in
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{
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const struct data_in_iface *di_if;
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enum {
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/* If DI_SWITCH_IMPL is set, switching data_in implementation is
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* recommended in order to get better performance for current
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* incoming stream frame scenario. Check the value of this flag
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* after calls to di_insert_frame() and di_frame_done().
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*/
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DI_SWITCH_IMPL = (1 << 0),
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} di_flags;
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};
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struct data_in *
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data_in_nocopy_new (struct lsquic_conn_public *, uint32_t stream_id);
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struct data_in *
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data_in_hash_new (struct lsquic_conn_public *, uint32_t stream_id,
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uint64_t byteage);
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enum ins_frame
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data_in_hash_insert_data_frame (struct data_in *data_in,
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const struct data_frame *data_frame, uint64_t read_offset);
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struct data_in *
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data_in_error_new ();
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#endif
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