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[net-next,v2,05/10] sctp: introduce sctp_chunk_stream_no

Message ID 2c3d2fe89a0f942756d87c7396c3fe63068fe6e2.1507069005.git.marcelo.leitner@gmail.com
State Accepted, archived
Delegated to: David Miller
Headers show
Series Introduce SCTP Stream Schedulers | expand

Commit Message

Marcelo Ricardo Leitner Oct. 3, 2017, 10:20 p.m. UTC
Add a helper to fetch the stream number from a given chunk.

Tested-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
---
 include/net/sctp/structs.h | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 9b2b30b3ba4dfd10c24c3e06ed80779180a06baf..c48f7999fe9b80c5b5e41910a3608059b94140a7 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -642,6 +642,11 @@  void sctp_init_addrs(struct sctp_chunk *, union sctp_addr *,
 		     union sctp_addr *);
 const union sctp_addr *sctp_source(const struct sctp_chunk *chunk);
 
+static inline __u16 sctp_chunk_stream_no(struct sctp_chunk *ch)
+{
+	return ntohs(ch->subh.data_hdr->stream);
+}
+
 enum {
 	SCTP_ADDR_NEW,		/* new address added to assoc/ep */
 	SCTP_ADDR_SRC,		/* address can be used as source */