^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2014 Nicira, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/in.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/ip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/net.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/rculist.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/udp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/if_vlan.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <net/geneve.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <net/icmp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <net/ip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <net/route.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <net/udp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <net/xfrm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "datapath.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "vport.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "vport-netdev.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static struct vport_ops ovs_geneve_vport_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * struct geneve_port - Keeps track of open UDP ports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * @dst_port: destination port.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct geneve_port {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) u16 dst_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static inline struct geneve_port *geneve_vport(const struct vport *vport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return vport_priv(vport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static int geneve_get_options(const struct vport *vport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct geneve_port *geneve_port = geneve_vport(vport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, geneve_port->dst_port))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static struct vport *geneve_tnl_create(const struct vport_parms *parms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct net *net = ovs_dp_get_net(parms->dp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct nlattr *options = parms->options;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct geneve_port *geneve_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct vport *vport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct nlattr *a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) u16 dst_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (!options) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) a = nla_find_nested(options, OVS_TUNNEL_ATTR_DST_PORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (a && nla_len(a) == sizeof(u16)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) dst_port = nla_get_u16(a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* Require destination port from userspace. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) vport = ovs_vport_alloc(sizeof(struct geneve_port),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) &ovs_geneve_vport_ops, parms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (IS_ERR(vport))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return vport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) geneve_port = geneve_vport(vport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) geneve_port->dst_port = dst_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) dev = geneve_dev_create_fb(net, parms->name, NET_NAME_USER, dst_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (IS_ERR(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) ovs_vport_free(vport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return ERR_CAST(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) err = dev_change_flags(dev, dev->flags | IFF_UP, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) rtnl_delete_link(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) ovs_vport_free(vport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return vport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return ERR_PTR(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static struct vport *geneve_create(const struct vport_parms *parms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct vport *vport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) vport = geneve_tnl_create(parms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (IS_ERR(vport))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) return vport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return ovs_netdev_link(vport, parms->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static struct vport_ops ovs_geneve_vport_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .type = OVS_VPORT_TYPE_GENEVE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .create = geneve_create,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .destroy = ovs_netdev_tunnel_destroy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .get_options = geneve_get_options,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .send = dev_queue_xmit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static int __init ovs_geneve_tnl_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return ovs_vport_ops_register(&ovs_geneve_vport_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static void __exit ovs_geneve_tnl_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ovs_vport_ops_unregister(&ovs_geneve_vport_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) module_init(ovs_geneve_tnl_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) module_exit(ovs_geneve_tnl_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) MODULE_DESCRIPTION("OVS: Geneve switching port");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) MODULE_ALIAS("vport-type-5");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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