David Stevens wrote:
No, ipv6_sk_mc_lock is required for join and leave to protect
inet6_mc_check()
calls, and modifications to the filter list only happen via ioctls that
are protected
by the socket lock.
I don't think any of these changes are correct.
+-DLS
Thanks.
I have one more question.
Why ip6_mc_source() uses read_lock_bh(&ipv6_sk_mc_lock) and ip6_mc_msfilter() doesn't use ipv6_sk_mc_lock at all.
when ipv6_mc_list's sflist are accessed by inet6_mc_check(), Can it be modified by ip6_mc_source() or ip6_mc_msfilter() ?
(For example ipv6_mc_list's sflist is freed up by sock_kfree_s(), when inet6_mc_check() uses it)
Regards
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