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From: "Michał Mirosław" <mirqus@gmail.com>
To: Stephen Hemminger <shemminger@vyatta.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>,
	"David S. Miller" <davem@davemloft.net>,
	netdev@vger.kernel.org
Subject: Re: [PATCH net-next] bridge: multicast router list manipulation
Date: Wed, 28 Apr 2010 01:11:52 +0200	[thread overview]
Message-ID: <y2ne2d7436a1004271611h5dc5f184gcbbc6748839c3c58@mail.gmail.com> (raw)
In-Reply-To: <20100427101311.2f445227@nehalam>

2010/4/27 Stephen Hemminger <shemminger@vyatta.com>:
> I prefer that the hlist be only accessed through the hlist macro
> objects. Explicit twiddling of links (especially with RCU) exposes
> the code to future bugs.
[...]
> -       port->rlist.pprev = h;
> -       port->rlist.next = p;
> -       rcu_assign_pointer(*h, &port->rlist);
> -       if (p)
> -               p->pprev = &port->rlist.next;
> +       hlist_for_each_entry(p, n, &br->router_list, rlist) {

Shouldn't this be hlist_for_each_entry_rcu?

> +               if ((unsigned long) port >= (unsigned long) p) {
> +                       hlist_add_before_rcu(n, &port->rlist);
> +                       return;
> +               }
> +               last = n;
> +       }
> +
> +       if (last)
> +               hlist_add_after_rcu(last, &port->rlist);
> +       else
> +               hlist_add_head_rcu(&port->rlist, &br->router_list);
>  }
>
[...]

Best Regards,
Michał Mirosław

  parent reply	other threads:[~2010-04-27 23:11 UTC|newest]

Thread overview: 81+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-02-26 15:34 [RFC] [1/13] bridge: Add IGMP snooping support Herbert Xu
2010-02-26 15:35 ` [PATCH 1/13] bridge: Do br_pass_frame_up after other ports Herbert Xu
2010-02-26 15:35 ` [PATCH 2/13] bridge: Allow tail-call on br_pass_frame_up Herbert Xu
2010-02-27 11:14   ` David Miller
2010-02-27 15:36     ` Herbert Xu
2010-02-26 15:35 ` [PATCH 3/13] bridge: Avoid unnecessary clone on forward path Herbert Xu
2010-02-26 15:35 ` [PATCH 4/13] bridge: Use BR_INPUT_SKB_CB on xmit path Herbert Xu
2010-02-26 15:35 ` [PATCH 5/13] bridge: Split may_deliver/deliver_clone out of br_flood Herbert Xu
2010-02-26 15:35 ` [PATCH 6/13] bridge: Add core IGMP snooping support Herbert Xu
2010-02-26 15:35 ` [PATCH 7/13] bridge: Add multicast forwarding functions Herbert Xu
2010-02-26 15:35 ` [PATCH 8/13] bridge: Add multicast start/stop hooks Herbert Xu
2010-02-26 15:35 ` [PATCH 9/13] bridge: Add multicast data-path hooks Herbert Xu
2010-02-26 15:35 ` [PATCH 10/13] bridge: Add multicast_router sysfs entries Herbert Xu
2010-02-27  0:42   ` Stephen Hemminger
2010-02-27 11:29     ` David Miller
2010-02-27 15:53       ` Herbert Xu
2010-03-09 12:25     ` Herbert Xu
2010-03-09 12:26       ` Herbert Xu
2010-02-26 15:35 ` [PATCH 11/13] bridge: Add multicast_snooping sysfs toggle Herbert Xu
2010-02-26 15:35 ` [PATCH 12/13] bridge: Add hash elasticity/max sysfs entries Herbert Xu
2010-02-26 15:35 ` [PATCH 13/13] bridge: Add multicast count/interval " Herbert Xu
2010-02-28  5:40 ` [1/13] bridge: Add IGMP snooping support Herbert Xu
2010-02-28  5:41   ` [PATCH 1/13] bridge: Do br_pass_frame_up after other ports Herbert Xu
2010-02-28  5:41   ` [PATCH 2/13] bridge: Allow tail-call on br_pass_frame_up Herbert Xu
2010-02-28  5:41   ` [PATCH 3/13] bridge: Avoid unnecessary clone on forward path Herbert Xu
2010-02-28  5:41   ` [PATCH 4/13] bridge: Use BR_INPUT_SKB_CB on xmit path Herbert Xu
2010-02-28  5:41   ` [PATCH 5/13] bridge: Split may_deliver/deliver_clone out of br_flood Herbert Xu
2010-02-28  5:41   ` [PATCH 6/13] bridge: Add core IGMP snooping support Herbert Xu
2010-03-05 23:43     ` Paul E. McKenney
2010-03-06  1:17       ` Herbert Xu
2010-03-06  5:06         ` Paul E. McKenney
2010-03-06  6:56           ` Herbert Xu
2010-03-06  7:03             ` Herbert Xu
2010-03-07 23:31               ` David Miller
2010-03-06  7:07             ` Herbert Xu
2010-03-07 23:31               ` David Miller
2010-03-06 15:00             ` Paul E. McKenney
2010-03-06 15:19             ` Paul E. McKenney
2010-03-06 19:00               ` Paul E. McKenney
2010-03-07  2:45                 ` Herbert Xu
2010-03-07  3:11                   ` Paul E. McKenney
2010-03-08 18:50                     ` Arnd Bergmann
2010-03-09  3:15                       ` Paul E. McKenney
2010-03-11 18:49                       ` Arnd Bergmann
2010-03-14 23:01                         ` Paul E. McKenney
2010-03-09 21:12                     ` Arnd Bergmann
2010-03-10  2:14                       ` Paul E. McKenney
2010-03-10  9:41                         ` Arnd Bergmann
2010-03-10 10:39                           ` Eric Dumazet
2010-03-10 10:49                             ` Herbert Xu
2010-03-10 13:13                               ` Paul E. McKenney
2010-03-10 14:07                                 ` Herbert Xu
2010-03-10 16:26                                   ` Paul E. McKenney
2010-03-10 16:35                                     ` David Miller
2010-03-10 17:56                                       ` Arnd Bergmann
2010-03-10 21:25                                         ` Paul E. McKenney
2010-03-10 13:27                               ` Arnd Bergmann
2010-03-10 13:39                               ` Arnd Bergmann
2010-03-10 13:19                           ` Paul E. McKenney
2010-03-10 13:30                             ` Arnd Bergmann
2010-03-10 13:57                               ` Paul E. McKenney
2010-02-28  5:41   ` [PATCH 7/13] bridge: Add multicast forwarding functions Herbert Xu
2010-02-28  5:41   ` [PATCH 8/13] bridge: Add multicast start/stop hooks Herbert Xu
2010-02-28  5:41   ` [PATCH 9/13] bridge: Add multicast data-path hooks Herbert Xu
2010-04-27 17:13     ` [PATCH net-next] bridge: use is_multicast_ether_addr Stephen Hemminger
2010-04-27 19:53       ` David Miller
2010-02-28  5:41   ` [PATCH 10/13] bridge: Add multicast_router sysfs entries Herbert Xu
2010-04-27 17:13     ` [PATCH net-next] bridge: multicast router list manipulation Stephen Hemminger
2010-04-27 19:54       ` David Miller
2010-04-27 23:11       ` Michał Mirosław [this message]
2010-04-27 23:25         ` Stephen Hemminger
2010-04-27 23:28           ` David Miller
2010-04-27 23:44             ` Stephen Hemminger
2010-04-27 23:51               ` David Miller
2010-04-27 23:27         ` David Miller
2010-04-28  1:51       ` Herbert Xu
2010-02-28  5:41   ` [PATCH 11/13] bridge: Add multicast_snooping sysfs toggle Herbert Xu
2010-02-28  5:41   ` [PATCH 12/13] bridge: Add hash elasticity/max sysfs entries Herbert Xu
2010-02-28  5:41   ` [PATCH 13/13] bridge: Add multicast count/interval " Herbert Xu
2010-02-28  8:52   ` [1/13] bridge: Add IGMP snooping support David Miller
2010-03-01  2:08     ` Herbert Xu

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