From: Matteo Croce <mcroce@linux.microsoft.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: Eelco Chaudron <echaudro@redhat.com>,
netdev@vger.kernel.org, David Miller <davem@davemloft.net>,
dev@openvswitch.org, Pravin B Shelar <pshelar@ovn.org>,
bindiyakurle@gmail.com, Ilya Maximets <i.maximets@ovn.org>
Subject: Re: [PATCH net] net: openvswitch: fix TTL decrement action netlink message format
Date: Mon, 23 Nov 2020 20:36:39 +0100 [thread overview]
Message-ID: <CAFnufp1RRtwDLwrWayvyZVPmDjab_dTx50u7xWeNwK7J6azqWw@mail.gmail.com> (raw)
In-Reply-To: <20201120131228.489c3b52@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
On Fri, Nov 20, 2020 at 10:12 PM Jakub Kicinski <kuba@kernel.org> wrote:
>
> On Thu, 19 Nov 2020 04:04:04 -0500 Eelco Chaudron wrote:
> > Currently, the openvswitch module is not accepting the correctly formated
> > netlink message for the TTL decrement action. For both setting and getting
> > the dec_ttl action, the actions should be nested in the
> > OVS_DEC_TTL_ATTR_ACTION attribute as mentioned in the openvswitch.h uapi.
>
> IOW this change will not break any known user space, correct?
>
> But existing OvS user space already expects it to work like you
> make it work now?
>
> What's the harm in leaving it as is?
>
> > Fixes: 744676e77720 ("openvswitch: add TTL decrement action")
> > Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
>
> Can we get a review from OvS folks? Matteo looks good to you (as the
> original author)?
>
Hi,
I think that the userspace still has to implement the dec_ttl action;
by now dec_ttl is implemented with set_ttl().
So there is no breakage yet.
Eelco, with this fix we will encode the netlink attribute in the same
way for the kernel and netdev datapath?
If so, go for it.
> > - err = __ovs_nla_copy_actions(net, attr, key, sfa, eth_type,
> > + err = __ovs_nla_copy_actions(net, actions, key, sfa, eth_type,
> > vlan_tci, mpls_label_count, log);
> > if (err)
> > return err;
>
> You're not canceling any nests on error, I assume this is normal.
>
> > + add_nested_action_end(*sfa, action_start);
> > add_nested_action_end(*sfa, start);
> > return 0;
> > }
>
--
per aspera ad upstream
next prev parent reply other threads:[~2020-11-23 19:37 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-19 9:04 [PATCH net] net: openvswitch: fix TTL decrement action netlink message format Eelco Chaudron
2020-11-20 21:12 ` Jakub Kicinski
2020-11-23 19:36 ` Matteo Croce [this message]
2020-11-24 1:57 ` Jakub Kicinski
2020-11-24 11:20 ` Eelco Chaudron
2020-11-24 11:19 ` Eelco Chaudron
2020-11-24 11:18 ` Eelco Chaudron
2020-11-20 22:16 ` Pravin Shelar
2020-11-24 10:51 ` Eelco Chaudron
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