netns: fix NLM_F_ECHO mechanism for RTM_NEWNSID
The flag NLM_F_ECHO aims to reply to the user the message notified to all
listeners.
It was not the case with the command RTM_NEWNSID, let's fix this.
Fixes: 0c7aecd4bd
("netns: add rtnl cmd to add and get peer netns ids")
Reported-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Guillaume Nault <gnault@redhat.com>
Tested-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
This commit is contained in:
Родитель
e0ae2c578d
Коммит
993e4c929a
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@ -245,7 +245,8 @@ static int __peernet2id(struct net *net, struct net *peer)
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return __peernet2id_alloc(net, peer, &no);
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}
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static void rtnl_net_notifyid(struct net *net, int cmd, int id);
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static void rtnl_net_notifyid(struct net *net, int cmd, int id, u32 portid,
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struct nlmsghdr *nlh);
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/* This function returns the id of a peer netns. If no id is assigned, one will
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* be allocated and returned.
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*/
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@ -268,7 +269,7 @@ int peernet2id_alloc(struct net *net, struct net *peer)
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id = __peernet2id_alloc(net, peer, &alloc);
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spin_unlock_bh(&net->nsid_lock);
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if (alloc && id >= 0)
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rtnl_net_notifyid(net, RTM_NEWNSID, id);
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rtnl_net_notifyid(net, RTM_NEWNSID, id, 0, NULL);
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if (alive)
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put_net(peer);
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return id;
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@ -532,7 +533,7 @@ static void unhash_nsid(struct net *net, struct net *last)
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idr_remove(&tmp->netns_ids, id);
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spin_unlock_bh(&tmp->nsid_lock);
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if (id >= 0)
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rtnl_net_notifyid(tmp, RTM_DELNSID, id);
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rtnl_net_notifyid(tmp, RTM_DELNSID, id, 0, NULL);
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if (tmp == last)
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break;
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}
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@ -764,7 +765,8 @@ static int rtnl_net_newid(struct sk_buff *skb, struct nlmsghdr *nlh,
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err = alloc_netid(net, peer, nsid);
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spin_unlock_bh(&net->nsid_lock);
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if (err >= 0) {
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rtnl_net_notifyid(net, RTM_NEWNSID, err);
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rtnl_net_notifyid(net, RTM_NEWNSID, err, NETLINK_CB(skb).portid,
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nlh);
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err = 0;
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} else if (err == -ENOSPC && nsid >= 0) {
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err = -EEXIST;
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@ -1051,9 +1053,12 @@ end:
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return err < 0 ? err : skb->len;
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}
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static void rtnl_net_notifyid(struct net *net, int cmd, int id)
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static void rtnl_net_notifyid(struct net *net, int cmd, int id, u32 portid,
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struct nlmsghdr *nlh)
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{
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struct net_fill_args fillargs = {
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.portid = portid,
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.seq = nlh ? nlh->nlmsg_seq : 0,
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.cmd = cmd,
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.nsid = id,
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};
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@ -1068,7 +1073,7 @@ static void rtnl_net_notifyid(struct net *net, int cmd, int id)
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if (err < 0)
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goto err_out;
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rtnl_notify(msg, net, 0, RTNLGRP_NSID, NULL, 0);
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rtnl_notify(msg, net, portid, RTNLGRP_NSID, nlh, 0);
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return;
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err_out:
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