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sctp: implement generate_ftsn for sctp_stream_interleave

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generate_ftsn is added as a member of sctp_stream_interleave, used to
create fwdtsn or ifwdtsn chunk according to abandoned chunks, called
in sctp_retransmit and sctp_outq_sack.

sctp_generate_iftsn works for ifwdtsn, and sctp_generate_fwdtsn is
still used for making fwdtsn.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo R. Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long
2017-12-15 00:41:26 +08:00
committed by David S. Miller
parent 2d07a49ade
commit 8e0c3b73ce
4 changed files with 84 additions and 6 deletions
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2
include/net/sctp/stream_interleave.h
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@@ -47,6 +47,8 @@ struct sctp_stream_interleave {
struct sctp_chunk *chunk, gfp_t gfp);
void (*start_pd)(struct sctp_ulpq *ulpq, gfp_t gfp);
void (*abort_pd)(struct sctp_ulpq *ulpq, gfp_t gfp);
/* (I-)FORWARD-TSN process */
void (*generate_ftsn)(struct sctp_outq *q, __u32 ctsn);
};
void sctp_stream_interleave_init(struct sctp_stream *stream);

1
include/net/sctp/structs.h
View File

@@ -1100,6 +1100,7 @@ void sctp_retransmit_mark(struct sctp_outq *, struct sctp_transport *, __u8);
void sctp_outq_uncork(struct sctp_outq *, gfp_t gfp);
void sctp_prsctp_prune(struct sctp_association *asoc,
struct sctp_sndrcvinfo *sinfo, int msg_len);
void sctp_generate_fwdtsn(struct sctp_outq *q, __u32 sack_ctsn);
/* Uncork and flush an outqueue. */
static inline void sctp_outq_cork(struct sctp_outq *q)
{