* [PATCH net] ipv6/mcast: update mc_qrv when join new group
@ 2018-10-26 2:30 Hangbin Liu
2018-10-30 3:23 ` David Miller
2018-11-08 7:44 ` Hangbin Liu
0 siblings, 2 replies; 6+ messages in thread
From: Hangbin Liu @ 2018-10-26 2:30 UTC (permalink / raw)
To: netdev; +Cc: David Miller, Hangbin Liu
Currently we only set mc_qrv to sysctl_mld_qrv when interface up. If we
change sysctl_mld_qrv after interface up, it will has no effect.
Fix it by assigning latest sysctl_mld_qrv to idev mc_qrv when join new group.
Reported-by: Ying Xu <yinxu@redhat.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
net/ipv6/mcast.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index dbab62e..bed4890 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -680,6 +680,7 @@ static void igmp6_group_added(struct ifmcaddr6 *mc)
if (!(dev->flags & IFF_UP) || (mc->mca_flags & MAF_NOREPORT))
return;
+ mc->idev->mc_qrv = sysctl_mld_qrv;
if (mld_in_v1_mode(mc->idev)) {
igmp6_join_group(mc);
return;
--
2.5.5
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH net] ipv6/mcast: update mc_qrv when join new group
2018-10-26 2:30 [PATCH net] ipv6/mcast: update mc_qrv when join new group Hangbin Liu
@ 2018-10-30 3:23 ` David Miller
2018-11-08 7:44 ` Hangbin Liu
1 sibling, 0 replies; 6+ messages in thread
From: David Miller @ 2018-10-30 3:23 UTC (permalink / raw)
To: liuhangbin; +Cc: netdev
From: Hangbin Liu <liuhangbin@gmail.com>
Date: Fri, 26 Oct 2018 10:30:54 +0800
> Currently we only set mc_qrv to sysctl_mld_qrv when interface up. If we
> change sysctl_mld_qrv after interface up, it will has no effect.
>
> Fix it by assigning latest sysctl_mld_qrv to idev mc_qrv when join new group.
>
> Reported-by: Ying Xu <yinxu@redhat.com>
> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Why isn't mld_update_qrv() taking care of this?
At a minimum, you must make your change take MLD_QRV_DEFAULT etc.
into account like mld_update_qrv() does.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH net] ipv6/mcast: update mc_qrv when join new group
2018-10-26 2:30 [PATCH net] ipv6/mcast: update mc_qrv when join new group Hangbin Liu
2018-10-30 3:23 ` David Miller
@ 2018-11-08 7:44 ` Hangbin Liu
2018-11-08 8:12 ` David Miller
2018-11-14 2:37 ` Hangbin Liu
1 sibling, 2 replies; 6+ messages in thread
From: Hangbin Liu @ 2018-11-08 7:44 UTC (permalink / raw)
To: David Miller; +Cc: netdev
On Fri, Oct 26, 2018 at 10:30:54AM +0800, Hangbin Liu wrote:
> Currently we only set mc_qrv to sysctl_mld_qrv when interface up. If we
> change sysctl_mld_qrv after interface up, it will has no effect.
>
> Fix it by assigning latest sysctl_mld_qrv to idev mc_qrv when join new group.
>
> Reported-by: Ying Xu <yinxu@redhat.com>
> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Hi David,
Any comments for this patch?
Thanks
Hangbin
> ---
> net/ipv6/mcast.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
> index dbab62e..bed4890 100644
> --- a/net/ipv6/mcast.c
> +++ b/net/ipv6/mcast.c
> @@ -680,6 +680,7 @@ static void igmp6_group_added(struct ifmcaddr6 *mc)
> if (!(dev->flags & IFF_UP) || (mc->mca_flags & MAF_NOREPORT))
> return;
>
> + mc->idev->mc_qrv = sysctl_mld_qrv;
> if (mld_in_v1_mode(mc->idev)) {
> igmp6_join_group(mc);
> return;
> --
> 2.5.5
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH net] ipv6/mcast: update mc_qrv when join new group
2018-11-08 7:44 ` Hangbin Liu
@ 2018-11-08 8:12 ` David Miller
2018-11-14 2:37 ` Hangbin Liu
1 sibling, 0 replies; 6+ messages in thread
From: David Miller @ 2018-11-08 8:12 UTC (permalink / raw)
To: liuhangbin; +Cc: netdev
From: Hangbin Liu <liuhangbin@gmail.com>
Date: Thu, 8 Nov 2018 15:44:10 +0800
> On Fri, Oct 26, 2018 at 10:30:54AM +0800, Hangbin Liu wrote:
>> Currently we only set mc_qrv to sysctl_mld_qrv when interface up. If we
>> change sysctl_mld_qrv after interface up, it will has no effect.
>>
>> Fix it by assigning latest sysctl_mld_qrv to idev mc_qrv when join new group.
>>
>> Reported-by: Ying Xu <yinxu@redhat.com>
>> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
>
> Hi David,
>
> Any comments for this patch?
I did give you feedback and you never responded:
https://patchwork.ozlabs.org/patch/989422/
So I tossed your patch.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH net] ipv6/mcast: update mc_qrv when join new group
2018-11-08 7:44 ` Hangbin Liu
2018-11-08 8:12 ` David Miller
@ 2018-11-14 2:37 ` Hangbin Liu
2018-11-20 9:00 ` Hangbin Liu
1 sibling, 1 reply; 6+ messages in thread
From: Hangbin Liu @ 2018-11-14 2:37 UTC (permalink / raw)
To: David Miller; +Cc: netdev
On Thu, Nov 08, 2018 at 03:44:10PM +0800, Hangbin Liu wrote:
> On Fri, Oct 26, 2018 at 10:30:54AM +0800, Hangbin Liu wrote:
> > Currently we only set mc_qrv to sysctl_mld_qrv when interface up. If we
> > change sysctl_mld_qrv after interface up, it will has no effect.
> >
> > Fix it by assigning latest sysctl_mld_qrv to idev mc_qrv when join new group.
> >
> > Reported-by: Ying Xu <yinxu@redhat.com>
> > Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
>
> Hi David,
>
> Any comments for this patch?
> > ---
> > net/ipv6/mcast.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
> > index dbab62e..bed4890 100644
> > --- a/net/ipv6/mcast.c
> > +++ b/net/ipv6/mcast.c
> > @@ -680,6 +680,7 @@ static void igmp6_group_added(struct ifmcaddr6 *mc)
> > if (!(dev->flags & IFF_UP) || (mc->mca_flags & MAF_NOREPORT))
> > return;
> >
> > + mc->idev->mc_qrv = sysctl_mld_qrv;
> > if (mld_in_v1_mode(mc->idev)) {
> > igmp6_join_group(mc);
> > return;
Hi David,
Sorry for the late reply. Today I find your reply in
https://patchwork.ozlabs.org/patch/989422/, but I could not find your reply
in my local mailbox, even on gmail web side. I can receive other kernel
mails correctly, which is weird...I will check it later.
For your question:
> Why isn't mld_update_qrv() taking care of this?
mld_update_qrv() is used for processing recieved mldv2 query message. This
patch is to init new sysctl_mld_qrv for new joined groups, which haven't
received any mld query message. e.g.
- ipv6_mc_up() - ipv6_mc_reset() set idev->mc_qrv to default sysctl_mld_qrv, which is 2
- Join group A with qrv = 2
- user set sysctl_mld_qrv to 3
- Join group B with qrv = 2 <- Here the new group should set qrv to 3 as
user updated sysctl_mld_qrv. This is the
issue this patch want to fix
- Recived MLDv2 query message
- Group A, B update new qrv via mld_update_qrv()
> At a minimum, you must make your change take MLD_QRV_DEFAULT etc.
> into account like mld_update_qrv() does.
We should not init mc_qrv to min(MLD_QRV_DEFAULT, sysctl_mld_qrv), or
user will never be able to set mc_qrv greater than 2.
Thanks
Hangbin
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH net] ipv6/mcast: update mc_qrv when join new group
2018-11-14 2:37 ` Hangbin Liu
@ 2018-11-20 9:00 ` Hangbin Liu
0 siblings, 0 replies; 6+ messages in thread
From: Hangbin Liu @ 2018-11-20 9:00 UTC (permalink / raw)
To: David Miller; +Cc: netdev
On Wed, Nov 14, 2018 at 10:37:31AM +0800, Hangbin Liu wrote:
> On Thu, Nov 08, 2018 at 03:44:10PM +0800, Hangbin Liu wrote:
> > On Fri, Oct 26, 2018 at 10:30:54AM +0800, Hangbin Liu wrote:
> > > Currently we only set mc_qrv to sysctl_mld_qrv when interface up. If we
> > > change sysctl_mld_qrv after interface up, it will has no effect.
> > >
> > > Fix it by assigning latest sysctl_mld_qrv to idev mc_qrv when join new group.
> > >
> > > Reported-by: Ying Xu <yinxu@redhat.com>
> > > Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
> >
> > Hi David,
> >
> > Any comments for this patch?
> > > ---
> > > net/ipv6/mcast.c | 1 +
> > > 1 file changed, 1 insertion(+)
> > >
> > > diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
> > > index dbab62e..bed4890 100644
> > > --- a/net/ipv6/mcast.c
> > > +++ b/net/ipv6/mcast.c
> > > @@ -680,6 +680,7 @@ static void igmp6_group_added(struct ifmcaddr6 *mc)
> > > if (!(dev->flags & IFF_UP) || (mc->mca_flags & MAF_NOREPORT))
> > > return;
> > >
> > > + mc->idev->mc_qrv = sysctl_mld_qrv;
> > > if (mld_in_v1_mode(mc->idev)) {
> > > igmp6_join_group(mc);
> > > return;
>
> Hi David,
>
> Sorry for the late reply. Today I find your reply in
> https://patchwork.ozlabs.org/patch/989422/, but I could not find your reply
> in my local mailbox, even on gmail web side. I can receive other kernel
> mails correctly, which is weird...I will check it later.
>
> For your question:
>
> > Why isn't mld_update_qrv() taking care of this?
>
> mld_update_qrv() is used for processing recieved mldv2 query message. This
> patch is to init new sysctl_mld_qrv for new joined groups, which haven't
> received any mld query message. e.g.
>
> - ipv6_mc_up() - ipv6_mc_reset() set idev->mc_qrv to default sysctl_mld_qrv, which is 2
> - Join group A with qrv = 2
> - user set sysctl_mld_qrv to 3
> - Join group B with qrv = 2 <- Here the new group should set qrv to 3 as
> user updated sysctl_mld_qrv. This is the
> issue this patch want to fix
> - Recived MLDv2 query message
> - Group A, B update new qrv via mld_update_qrv()
>
>
> > At a minimum, you must make your change take MLD_QRV_DEFAULT etc.
> > into account like mld_update_qrv() does.
>
> We should not init mc_qrv to min(MLD_QRV_DEFAULT, sysctl_mld_qrv), or
> user will never be able to set mc_qrv greater than 2.
>
Hi David,
Any comments? Should I re-send a new patch?
Thanks
Hangbin
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2018-11-20 19:28 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-10-26 2:30 [PATCH net] ipv6/mcast: update mc_qrv when join new group Hangbin Liu
2018-10-30 3:23 ` David Miller
2018-11-08 7:44 ` Hangbin Liu
2018-11-08 8:12 ` David Miller
2018-11-14 2:37 ` Hangbin Liu
2018-11-20 9:00 ` Hangbin Liu
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