567c5e13be
In order to pass extack together with NETDEV_PRE_UP notifications, it's necessary to route the extack to __dev_open() from diverse (possibly indirect) callers. One prominent API through which the notification is invoked is dev_change_flags(). Therefore extend dev_change_flags() with and extra extack argument and update all users. Most of the calls end up just encoding NULL, but several sites (VLAN, ipvlan, VRF, rtnetlink) do have extack available. Since the function declaration line is changed anyway, name the other function arguments to placate checkpatch. Signed-off-by: Petr Machata <petrm@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
145 lines
3.1 KiB
C
145 lines
3.1 KiB
C
/*
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* Copyright (c) 2014 Nicira, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/net.h>
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#include <linux/rculist.h>
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#include <linux/udp.h>
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#include <linux/if_vlan.h>
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#include <linux/module.h>
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#include <net/geneve.h>
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#include <net/icmp.h>
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#include <net/ip.h>
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#include <net/route.h>
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#include <net/udp.h>
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#include <net/xfrm.h>
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#include "datapath.h"
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#include "vport.h"
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#include "vport-netdev.h"
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static struct vport_ops ovs_geneve_vport_ops;
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/**
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* struct geneve_port - Keeps track of open UDP ports
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* @dst_port: destination port.
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*/
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struct geneve_port {
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u16 dst_port;
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};
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static inline struct geneve_port *geneve_vport(const struct vport *vport)
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{
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return vport_priv(vport);
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}
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static int geneve_get_options(const struct vport *vport,
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struct sk_buff *skb)
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{
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struct geneve_port *geneve_port = geneve_vport(vport);
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if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, geneve_port->dst_port))
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return -EMSGSIZE;
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return 0;
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}
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static struct vport *geneve_tnl_create(const struct vport_parms *parms)
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{
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struct net *net = ovs_dp_get_net(parms->dp);
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struct nlattr *options = parms->options;
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struct geneve_port *geneve_port;
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struct net_device *dev;
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struct vport *vport;
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struct nlattr *a;
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u16 dst_port;
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int err;
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if (!options) {
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err = -EINVAL;
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goto error;
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}
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a = nla_find_nested(options, OVS_TUNNEL_ATTR_DST_PORT);
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if (a && nla_len(a) == sizeof(u16)) {
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dst_port = nla_get_u16(a);
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} else {
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/* Require destination port from userspace. */
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err = -EINVAL;
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goto error;
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}
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vport = ovs_vport_alloc(sizeof(struct geneve_port),
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&ovs_geneve_vport_ops, parms);
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if (IS_ERR(vport))
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return vport;
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geneve_port = geneve_vport(vport);
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geneve_port->dst_port = dst_port;
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rtnl_lock();
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dev = geneve_dev_create_fb(net, parms->name, NET_NAME_USER, dst_port);
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if (IS_ERR(dev)) {
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rtnl_unlock();
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ovs_vport_free(vport);
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return ERR_CAST(dev);
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}
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err = dev_change_flags(dev, dev->flags | IFF_UP, NULL);
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if (err < 0) {
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rtnl_delete_link(dev);
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rtnl_unlock();
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ovs_vport_free(vport);
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goto error;
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}
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rtnl_unlock();
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return vport;
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error:
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return ERR_PTR(err);
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}
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static struct vport *geneve_create(const struct vport_parms *parms)
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{
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struct vport *vport;
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vport = geneve_tnl_create(parms);
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if (IS_ERR(vport))
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return vport;
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return ovs_netdev_link(vport, parms->name);
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}
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static struct vport_ops ovs_geneve_vport_ops = {
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.type = OVS_VPORT_TYPE_GENEVE,
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.create = geneve_create,
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.destroy = ovs_netdev_tunnel_destroy,
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.get_options = geneve_get_options,
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.send = dev_queue_xmit,
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};
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static int __init ovs_geneve_tnl_init(void)
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{
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return ovs_vport_ops_register(&ovs_geneve_vport_ops);
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}
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static void __exit ovs_geneve_tnl_exit(void)
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{
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ovs_vport_ops_unregister(&ovs_geneve_vport_ops);
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}
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module_init(ovs_geneve_tnl_init);
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module_exit(ovs_geneve_tnl_exit);
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MODULE_DESCRIPTION("OVS: Geneve switching port");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("vport-type-5");
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