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bridge: multicast: add a comment to br_port_state_selection about blocking state
Add a comment to explain why we're not disabling port's multicast when it goes in blocking state. Since there's a check in the timer's function which bypasses the timer if the port's in blocking/disabled state, the timer will simply expire and stop without sending more queries. Suggested-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -463,6 +463,10 @@ void br_port_state_selection(struct net_bridge *br)
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if (p->state != BR_STATE_BLOCKING)
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br_multicast_enable_port(p);
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/* Multicast is not disabled for the port when it goes in
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* blocking state because the timers will expire and stop by
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* themselves without sending more queries.
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*/
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if (p->state == BR_STATE_FORWARDING)
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++liveports;
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}
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