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sctp: define the member stream as an object instead of pointer in asoc

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As Marcelo's suggestion, stream is a fixed size member of asoc and would
not grow with more streams. To avoid an allocation for it, this patch is
to define it as an object instead of pointer and update the places using
it, also create sctp_stream_update() called in sctp_assoc_update() to
migrate the stream info from one stream to another.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long 2017-05-31 16:36:31 +08:00 • committed by David S. Miller
parent 6e7da286e3
commit cee360ab4d
10 changed files with 65 additions and 69 deletions
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3
include/net/sctp/structs.h
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@ -381,6 +381,7 @@ int sctp_stream_new(struct sctp_association *asoc, gfp_t gfp);
int sctp_stream_init(struct sctp_association *asoc, gfp_t gfp);
void sctp_stream_free(struct sctp_stream *stream);
void sctp_stream_clear(struct sctp_stream *stream);
void sctp_stream_update(struct sctp_stream *stream, struct sctp_stream *new);
/* What is the current SSN number for this stream? */
#define sctp_ssn_peek(stream, type, sid) \
@ -1750,7 +1751,7 @@ struct sctp_association {
__u32 default_rcv_context;
/* Stream arrays */
struct sctp_stream *stream;
struct sctp_stream stream;
/* All outbound chunks go through this structure. */
struct sctp_outq outqueue;