sctp: check invalid value of length parameter in error cause
RFC4960, section 3.3.7 said: If an endpoint receives an ABORT with a format error or no TCB is found, it MUST silently discard it. When an endpoint receives ABORT that parameter value is invalid, drop it. Signed-off-by: NShan Wei <shanwei@cn.fujitsu.com> Signed-off-by: NVlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: NWei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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