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authorXin Long <lucien.xin@gmail.com>2017-12-08 16:04:09 +0300
committerDavid S. Miller <davem@davemloft.net>2017-12-11 19:23:05 +0300
commit132282386f5d0eff7a84a119599216b5f9e9bfc6 (patch)
treed38678a52bc8be07f40964b91c6afb839fa8cf03 /include/net/sctp
parent65f5e357839e40817aead853d7a7f61ff828b52b (diff)
downloadlinux-132282386f5d0eff7a84a119599216b5f9e9bfc6.tar.xz
sctp: add support for the process of unordered idata
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>
Diffstat (limited to 'include/net/sctp')
-rw-r--r--include/net/sctp/structs.h14
-rw-r--r--include/net/sctp/ulpqueue.h1
2 files changed, 14 insertions, 1 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 73b315de2fef..8ef638d966f1 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -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 {
diff --git a/include/net/sctp/ulpqueue.h b/include/net/sctp/ulpqueue.h
index eb98c7150a56..bb0ecba3db2b 100644
--- a/include/net/sctp/ulpqueue.h
+++ b/include/net/sctp/ulpqueue.h
@@ -45,6 +45,7 @@ struct sctp_ulpq {
char pd_mode;
struct sctp_association *asoc;
struct sk_buff_head reasm;
+ struct sk_buff_head reasm_uo;
struct sk_buff_head lobby;
};