Prior to this patch, sctp defined TCP_CLOSING as SCTP_SS_CLOSING.
TCP_CLOSING is such a special sk state in TCP that inet common codes
even exclude it.
For instance, inet_accept thinks the accept sk's state never be
TCP_CLOSING, or it will give a WARN_ON. TCP works well with that
while SCTP may trigger the call trace, as CLOSING state in SCTP
has different meaning from TCP.
This fix is to change to use TCP_CLOSE_WAIT as SCTP_SS_CLOSING,
instead of TCP_CLOSING. Some side-effects could be expected,
regardless of not being used before. inet_accept will accept it
now.
I did all the func_tests in lksctp-tools and ran sctp codnomicon
fuzzer tests against this patch, no regression or failure found.
Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>
---
include/net/sctp/constants.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h
index 8c337cd..5b847e4 100644
--- a/include/net/sctp/constants.h
+++ b/include/net/sctp/constants.h
@@ -214,7 +214,7 @@ typedef enum {
SCTP_SS_LISTENING = TCP_LISTEN,
SCTP_SS_ESTABLISHING = TCP_SYN_SENT,
SCTP_SS_ESTABLISHED = TCP_ESTABLISHED,
- SCTP_SS_CLOSING = TCP_CLOSING,
+ SCTP_SS_CLOSING = TCP_CLOSE_WAIT,
} sctp_sock_state_t;
/* These functions map various type to printable names. */
--
2.1.0
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