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

[Marcelo Ricardo Leitner]

Add a helper to fetch the stream number from a given chunk.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leit...@gmail.com>
---
 include/net/sctp/structs.h | 5 +++++
 1 file changed, 5 insertions(+)

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 */
-- 
2.13.5