This patch fixes two bugs:
1. setsockopt() of anything but a Type 2 routing header should return
EINVAL instead of EPERM. Noticed by Shan Wei (shanwei@cn.fujitsu.com).
2. setsockopt()/sendmsg() of a Type 2 routing header with invalid length
or segments should return EINVAL. These values are statically fixed in
RFC 3775, unlike the variable Type 0 was.
Signed-off-by: Brian Haley <brian.haley@hp.com>
