On Wed, Sep 17, 2014 at 9:13 AM, Nicolas Dichtel
<nicolas.dich...@6wind.com> wrote:
> From: Samuel Gauthier <samuel.gauth...@6wind.com>
>
> Since commit fb5d1e9e127a ("openvswitch: Build flow cmd netlink reply only if
> needed."),
> the new flows are not notified to the listeners of OVS_FLOW_MCGROUP.
>
> This commit fixes the problem by checking that there are listeners in
> the actual OVS_FLOW_MCGROUP group, instead of 0.
>
right, this is bug. group id should be one.
> Signed-off-by: Samuel Gauthier <samuel.gauth...@6wind.com>
> Signed-off-by: Nicolas Dichtel <nicolas.dich...@6wind.com>
> ---
> net/openvswitch/datapath.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
> index 91d66b7e64ac..8396f6063343 100644
> --- a/net/openvswitch/datapath.c
> +++ b/net/openvswitch/datapath.c
> @@ -79,10 +79,10 @@ static const struct genl_multicast_group
> ovs_dp_vport_multicast_group = {
> /* Check if need to build a reply message.
> * OVS userspace sets the NLM_F_ECHO flag if it needs the reply. */
> static bool ovs_must_notify(struct genl_info *info,
> - const struct genl_multicast_group *grp)
> + unsigned int group)
> {
> return info->nlhdr->nlmsg_flags & NLM_F_ECHO ||
> - netlink_has_listeners(genl_info_net(info)->genl_sock, 0);
> + netlink_has_listeners(genl_info_net(info)->genl_sock, group);
> }
>
> static void ovs_notify(struct genl_family *family,
> @@ -763,7 +763,7 @@ static struct sk_buff *ovs_flow_cmd_alloc_info(const
> struct sw_flow_actions *act
> {
> struct sk_buff *skb;
>
> - if (!always && !ovs_must_notify(info, &ovs_dp_flow_multicast_group))
> + if (!always && !ovs_must_notify(info,
> dp_flow_genl_family.mcgrp_offset))
> return NULL;
>
I do not think mcgrp_offset is right group id. It is starting offset
of groups in a family and it is marked as private member of genl
module.
Rather we can just define enum for ovs_dp_flow_multicast_group and
directly use that as group-id.
> skb = genlmsg_new_unicast(ovs_flow_cmd_msg_size(acts), info,
> GFP_KERNEL);
> --
> 2.1.0
>
_______________________________________________
dev mailing list
dev@openvswitch.org
http://openvswitch.org/mailman/listinfo/dev
