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authorWei Yongjun <yjwei@cn.fujitsu.com>2007-08-21 15:50:01 +0800
committerVlad Yasevich <vladislav.yasevich@hp.com>2007-08-30 13:50:48 -0400
commit00f1c2df2a1c4903f4daa1333bafeb6dcbc9591d (patch)
tree61e9da42f580f7f120bac8c7cbeab39f2a0311ab /include/net/sctp
parent8d614ade511fef11f992d6a73e538d33b3b81f12 (diff)
SCTP: Fix to encode PROTOCOL VIOLATION error cause correctly
PROTOCOL VIOLATION error cause in ABORT is bad encode when make abort chunk. When SCTP encode ABORT chunk with PROTOCOL VIOLATION error cause, it just add the error messages to PROTOCOL VIOLATION error cause, the rest four bytes(struct sctp_paramhdr) is just add to the chunk, not change the length of error cause. This cause the ABORT chunk to be a bad format. The chunk is like this: ABORT chunk Chunk type: ABORT (6) Chunk flags: 0x00 Chunk length: 72 (*1) Protocol violation cause Cause code: Protocol violation (0x000d) Cause length: 62 (*2) Cause information: 5468652063756D756C61746976652074736E2061636B2062... Cause padding: 0000 [Needless] 00030010 Chunk Length(*1) = 72 but Cause length(*2) only 62, not include the extend 4 bytes. ((72 - sizeof(chunk_hdr)) = 68) != (62 +3) / 4 * 4 Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Diffstat (limited to 'include/net/sctp')
-rw-r--r--include/net/sctp/sm.h2
-rw-r--r--include/net/sctp/structs.h1
2 files changed, 2 insertions, 1 deletions
diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h
index 73cb9943c8a..991c85bb9e3 100644
--- a/include/net/sctp/sm.h
+++ b/include/net/sctp/sm.h
@@ -214,7 +214,7 @@ struct sctp_chunk *sctp_make_shutdown_ack(const struct sctp_association *asoc,
const struct sctp_chunk *);
struct sctp_chunk *sctp_make_shutdown_complete(const struct sctp_association *,
const struct sctp_chunk *);
-void sctp_init_cause(struct sctp_chunk *, __be16 cause, const void *, size_t);
+void sctp_init_cause(struct sctp_chunk *, __be16 cause, size_t);
struct sctp_chunk *sctp_make_abort(const struct sctp_association *,
const struct sctp_chunk *,
const size_t hint);
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index ee4559b1130..c0d5848c33d 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -726,6 +726,7 @@ int sctp_user_addto_chunk(struct sctp_chunk *chunk, int off, int len,
struct iovec *data);
void sctp_chunk_free(struct sctp_chunk *);
void *sctp_addto_chunk(struct sctp_chunk *, int len, const void *data);
+void *sctp_addto_param(struct sctp_chunk *, int len, const void *data);
struct sctp_chunk *sctp_chunkify(struct sk_buff *,
const struct sctp_association *,
struct sock *);