Commit 5660b9d9 authored Oct 17, 2018 by Xin Long Committed by David S. Miller Oct 17, 2018

sctp: fix the data size calculation in sctp_data_size



sctp data size should be calculated by subtracting data chunk header's
length from chunk_hdr->length, not just data header.

Fixes: 668c9beb ("sctp: implement assign_number for sctp_stream_interleave")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 05c998b7

include/net/sctp/sm.h

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -347,7 +347,7 @@ static inline __u16 sctp_data_size(struct sctp_chunk *chunk)
	__u16 size;		__u16 size;

	size = ntohs(chunk->chunk_hdr->length);		size = ntohs(chunk->chunk_hdr->length);
	size -= sctp_datahdr_len(&chunk->asoc->stream);		size -= sctp_datachk_len(&chunk->asoc->stream);

	return size;		return size;
	}		}