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sctp: add support for the process of unordered idata

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Unordered idata process is more complicated than unordered data:

 - It has to add mid into sctp_stream_out to save the next mid value,
   which is separated from ordered idata's.

 - To support pd for unordered idata, another mid and pd_mode need to
   be added to save the message id and pd state in sctp_stream_in.

 - To make  unordered idata reasm easier, it adds a new event queue
   to save frags for idata.

The patch mostly adds the samilar reasm functions for unordered idata
as ordered idata's, and also adjusts some other codes on assign_mid,
abort_pd and ulpevent_data for idata.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long
2017-12-08 21:04:09 +08:00
committed by David S. Miller
parent 65f5e35783
commit 132282386f
5 changed files with 392 additions and 28 deletions
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14
include/net/sctp/structs.h
View File

@@ -413,6 +413,14 @@ void sctp_stream_update(struct sctp_stream *stream, struct sctp_stream *new);
#define sctp_stream_in(asoc, sid) (&(asoc)->stream.in[sid])
/* What is the current MID_uo number for this stream? */
#define sctp_mid_uo_peek(stream, type, sid) \
((stream)->type[sid].mid_uo)
/* Return the next MID_uo number for this stream. */
#define sctp_mid_uo_next(stream, type, sid) \
((stream)->type[sid].mid_uo++)
/*
* Pointers to address related SCTP functions.
* (i.e. things that depend on the address family.)
@@ -1379,8 +1387,9 @@ struct sctp_stream_out {
__u32 mid;
__u16 ssn;
};
__u8 state;
__u32 mid_uo;
struct sctp_stream_out_ext *ext;
__u8 state;
};
struct sctp_stream_in {
@@ -1388,8 +1397,11 @@ struct sctp_stream_in {
__u32 mid;
__u16 ssn;
};
__u32 mid_uo;
__u32 fsn;
__u32 fsn_uo;
char pd_mode;
char pd_mode_uo;
};
struct sctp_stream {