#include <linux/if_link.h>
#include <linux/if_vlan.h>
+#include <net/addrconf.h>
+#include <net/dst_cache.h>
#include <net/dst_metadata.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#include <net/rtnetlink.h>
#include <net/geneve.h>
#include <net/protocol.h>
+#include <net/udp_tunnel.h>
+#include <net/ip6_route.h>
+#if IS_ENABLED(CONFIG_IPV6)
+#include <net/ipv6.h>
+#include <net/addrconf.h>
+#include <net/ip6_tunnel.h>
+#include <net/ip6_checksum.h>
+#endif
+
#include "gso.h"
#include "vport-netdev.h"
#include "compat.h"
-#ifndef HAVE_METADATA_DST
+#ifndef USE_UPSTREAM_TUNNEL
+
#define GENEVE_NETDEV_VER "0.6"
#define GENEVE_UDP_PORT 6081
static int geneve_net_id;
+union geneve_addr {
+ struct sockaddr_in sin;
+ struct sockaddr_in6 sin6;
+ struct sockaddr sa;
+};
+
+static union geneve_addr geneve_remote_unspec = { .sa.sa_family = AF_UNSPEC, };
+
/* Pseudo network device */
struct geneve_dev {
struct hlist_node hlist; /* vni hash table */
struct net *net; /* netns for packet i/o */
struct net_device *dev; /* netdev for geneve tunnel */
- struct geneve_sock *sock; /* socket used for geneve tunnel */
+ struct geneve_sock *sock4; /* IPv4 socket used for geneve tunnel */
+#if IS_ENABLED(CONFIG_IPV6)
+ struct geneve_sock *sock6; /* IPv6 socket used for geneve tunnel */
+#endif
u8 vni[3]; /* virtual network ID for tunnel */
u8 ttl; /* TTL override */
u8 tos; /* TOS override */
- struct sockaddr_in remote; /* IPv4 address for link partner */
+ union geneve_addr remote; /* IP address for link partner */
struct list_head next; /* geneve's per namespace list */
+ __be32 label; /* IPv6 flowlabel override */
__be16 dst_port;
bool collect_md;
+ u32 flags;
+ struct dst_cache dst_cache;
};
+/* Geneve device flags */
+#define GENEVE_F_UDP_ZERO_CSUM_TX BIT(0)
+#define GENEVE_F_UDP_ZERO_CSUM6_TX BIT(1)
+#define GENEVE_F_UDP_ZERO_CSUM6_RX BIT(2)
+
struct geneve_sock {
bool collect_md;
struct list_head list;
struct socket *sock;
struct rcu_head rcu;
int refcnt;
+ struct hlist_head vni_list[VNI_HASH_SIZE];
+ u32 flags;
#ifdef HAVE_UDP_OFFLOAD
struct udp_offload udp_offloads;
#endif
- struct hlist_head vni_list[VNI_HASH_SIZE];
};
static inline __u32 geneve_net_vni_hash(u8 vni[3])
#endif
}
+static sa_family_t geneve_get_sk_family(struct geneve_sock *gs)
+{
+ return gs->sock->sk->sk_family;
+}
+
static struct geneve_dev *geneve_lookup(struct geneve_sock *gs,
__be32 addr, u8 vni[])
{
vni_list_head = &gs->vni_list[hash];
hlist_for_each_entry_rcu(geneve, vni_list_head, hlist) {
if (!memcmp(vni, geneve->vni, sizeof(geneve->vni)) &&
- addr == geneve->remote.sin_addr.s_addr)
+ addr == geneve->remote.sin.sin_addr.s_addr)
+ return geneve;
+ }
+ return NULL;
+}
+
+#if IS_ENABLED(CONFIG_IPV6)
+static struct geneve_dev *geneve6_lookup(struct geneve_sock *gs,
+ struct in6_addr addr6, u8 vni[])
+{
+ struct hlist_head *vni_list_head;
+ struct geneve_dev *geneve;
+ __u32 hash;
+
+ /* Find the device for this VNI */
+ hash = geneve_net_vni_hash(vni);
+ vni_list_head = &gs->vni_list[hash];
+ hlist_for_each_entry_rcu(geneve, vni_list_head, hlist) {
+ if (!memcmp(vni, geneve->vni, sizeof(geneve->vni)) &&
+ ipv6_addr_equal(&addr6, &geneve->remote.sin6.sin6_addr))
return geneve;
}
return NULL;
}
+#endif
static inline struct genevehdr *geneve_hdr(const struct sk_buff *skb)
{
return (struct genevehdr *)(udp_hdr(skb) + 1);
}
-/* geneve receive/decap routine */
-static void geneve_rx(struct geneve_sock *gs, struct sk_buff *skb)
+static struct geneve_dev *geneve_lookup_skb(struct geneve_sock *gs,
+ struct sk_buff *skb)
{
- struct genevehdr *gnvh = geneve_hdr(skb);
- struct metadata_dst *tun_dst;
- struct geneve_dev *geneve = NULL;
- struct pcpu_sw_netstats *stats;
- struct iphdr *iph;
u8 *vni;
__be32 addr;
- int err;
- union {
- struct metadata_dst dst;
- char buf[sizeof(struct metadata_dst) + 256];
- } buf;
+ static u8 zero_vni[3];
+#if IS_ENABLED(CONFIG_IPV6)
+ static struct in6_addr zero_addr6;
+#endif
- iph = ip_hdr(skb); /* outer IP header... */
+ if (geneve_get_sk_family(gs) == AF_INET) {
+ struct iphdr *iph;
- if (gs->collect_md) {
- static u8 zero_vni[3];
+ iph = ip_hdr(skb); /* outer IP header... */
- vni = zero_vni;
- addr = 0;
- } else {
- vni = gnvh->vni;
- addr = iph->saddr;
+ if (gs->collect_md) {
+ vni = zero_vni;
+ addr = 0;
+ } else {
+ vni = geneve_hdr(skb)->vni;
+ addr = iph->saddr;
+ }
+
+ return geneve_lookup(gs, addr, vni);
+#if IS_ENABLED(CONFIG_IPV6)
+ } else if (geneve_get_sk_family(gs) == AF_INET6) {
+ struct ipv6hdr *ip6h;
+ struct in6_addr addr6;
+
+ ip6h = ipv6_hdr(skb); /* outer IPv6 header... */
+
+ if (gs->collect_md) {
+ vni = zero_vni;
+ addr6 = zero_addr6;
+ } else {
+ vni = geneve_hdr(skb)->vni;
+ addr6 = ip6h->saddr;
+ }
+
+ return geneve6_lookup(gs, addr6, vni);
+#endif
}
+ return NULL;
+}
- geneve = geneve_lookup(gs, addr, vni);
- if (!geneve)
- goto drop;
+/* geneve receive/decap routine */
+static void geneve_rx(struct geneve_dev *geneve, struct geneve_sock *gs,
+ struct sk_buff *skb)
+{
+ struct genevehdr *gnvh = geneve_hdr(skb);
+ struct metadata_dst *tun_dst = NULL;
+ struct pcpu_sw_netstats *stats;
+ int err = 0;
+ void *oiph;
+ union {
+ struct metadata_dst dst;
+ char buf[sizeof(struct metadata_dst) + 256];
+ } buf;
if (ip_tunnel_collect_metadata() || gs->collect_md) {
__be16 flags;
(gnvh->critical ? TUNNEL_CRIT_OPT : 0);
tun_dst = &buf.dst;
- ovs_udp_tun_rx_dst(&tun_dst->u.tun_info, skb, AF_INET, flags,
- vni_to_tunnel_id(gnvh->vni), gnvh->opt_len * 4);
+ ovs_udp_tun_rx_dst(tun_dst,
+ skb, geneve_get_sk_family(gs), flags,
+ vni_to_tunnel_id(gnvh->vni),
+ gnvh->opt_len * 4);
+ if (!tun_dst)
+ goto drop;
/* Update tunnel dst according to Geneve options. */
ip_tunnel_info_opts_set(&tun_dst->u.tun_info,
gnvh->options, gnvh->opt_len * 4);
/* Drop packets w/ critical options,
* since we don't support any...
*/
- tun_dst = NULL;
if (gnvh->critical)
goto drop;
}
skb_reset_mac_header(skb);
- skb_scrub_packet(skb, !net_eq(geneve->net, dev_net(geneve->dev)));
skb->protocol = eth_type_trans(skb, geneve->dev);
skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
if (tun_dst)
ovs_skb_dst_set(skb, &tun_dst->dst);
- else
- goto drop;
+
/* Ignore packet loops (and multicast echo) */
if (ether_addr_equal(eth_hdr(skb)->h_source, geneve->dev->dev_addr))
goto drop;
+ oiph = skb_network_header(skb);
skb_reset_network_header(skb);
- err = IP_ECN_decapsulate(iph, skb);
-
- if (unlikely(err)) {
- if (err > 1) {
- ++geneve->dev->stats.rx_frame_errors;
- ++geneve->dev->stats.rx_errors;
- goto drop;
- }
+ if (geneve_get_sk_family(gs) == AF_INET)
+ err = IP_ECN_decapsulate(oiph, skb);
+#if IS_ENABLED(CONFIG_IPV6)
+ else
+ err = IP6_ECN_decapsulate(oiph, skb);
+#endif
+ if (unlikely(err > 1)) {
+ ++geneve->dev->stats.rx_frame_errors;
+ ++geneve->dev->stats.rx_errors;
+ goto drop;
}
- stats = this_cpu_ptr((struct pcpu_sw_netstats __percpu *)geneve->dev->tstats);
+ stats = this_cpu_ptr(geneve->dev->tstats);
u64_stats_update_begin(&stats->syncp);
stats->rx_packets++;
stats->rx_bytes += skb->len;
u64_stats_update_end(&stats->syncp);
- netdev_port_receive(skb, &tun_dst->u.tun_info);
+
+ netdev_port_receive(skb, skb_tunnel_info(skb));
return;
drop:
/* Consume bad packet */
/* Setup stats when device is created */
static int geneve_init(struct net_device *dev)
{
- dev->tstats = (typeof(dev->tstats)) netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
+ struct geneve_dev *geneve = netdev_priv(dev);
+ int err;
+
+ dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
if (!dev->tstats)
return -ENOMEM;
+ err = dst_cache_init(&geneve->dst_cache, GFP_KERNEL);
+ if (err) {
+ free_percpu(dev->tstats);
+ return err;
+ }
+
return 0;
}
static void geneve_uninit(struct net_device *dev)
{
+ struct geneve_dev *geneve = netdev_priv(dev);
+
+ dst_cache_destroy(&geneve->dst_cache);
free_percpu(dev->tstats);
}
static int geneve_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
{
struct genevehdr *geneveh;
+ struct geneve_dev *geneve;
struct geneve_sock *gs;
int opts_len;
/* Need Geneve and inner Ethernet header to be present */
if (unlikely(!pskb_may_pull(skb, GENEVE_BASE_HLEN)))
- goto error;
+ goto drop;
/* Return packets with reserved bits set */
geneveh = geneve_hdr(skb);
if (unlikely(geneveh->ver != GENEVE_VER))
- goto error;
+ goto drop;
if (unlikely(geneveh->proto_type != htons(ETH_P_TEB)))
- goto error;
-
- opts_len = geneveh->opt_len * 4;
- if (iptunnel_pull_header(skb, GENEVE_BASE_HLEN + opts_len,
- htons(ETH_P_TEB)))
goto drop;
gs = rcu_dereference_sk_user_data(sk);
if (!gs)
goto drop;
- geneve_rx(gs, skb);
+#if IS_ENABLED(CONFIG_IPV6)
+#ifdef OVS_CHECK_UDP_TUNNEL_ZERO_CSUM
+ if (geneve_get_sk_family(gs) == AF_INET6 &&
+ !udp_hdr(skb)->check &&
+ !(gs->flags & GENEVE_F_UDP_ZERO_CSUM6_RX)) {
+ udp6_csum_zero_error(skb);
+ goto drop;
+ }
+#endif
+#endif
+ geneve = geneve_lookup_skb(gs, skb);
+ if (!geneve)
+ goto drop;
+
+ opts_len = geneveh->opt_len * 4;
+ if (iptunnel_pull_header(skb, GENEVE_BASE_HLEN + opts_len,
+ htons(ETH_P_TEB),
+ !net_eq(geneve->net, dev_net(geneve->dev))))
+ goto drop;
+
+ geneve_rx(geneve, gs, skb);
return 0;
drop:
/* Consume bad packet */
kfree_skb(skb);
return 0;
-
-error:
- /* Let the UDP layer deal with the skb */
- return 1;
}
static struct socket *geneve_create_sock(struct net *net, bool ipv6,
- __be16 port)
+ __be16 port, u32 flags)
{
struct socket *sock;
struct udp_port_cfg udp_conf;
if (ipv6) {
udp_conf.family = AF_INET6;
+ udp_conf.ipv6_v6only = 1;
+ udp_conf.use_udp6_rx_checksums =
+ !(flags & GENEVE_F_UDP_ZERO_CSUM6_RX);
} else {
udp_conf.family = AF_INET;
udp_conf.local_ip.s_addr = htonl(INADDR_ANY);
return sock;
}
-#ifdef HAVE_UDP_OFFLOAD
static void geneve_notify_add_rx_port(struct geneve_sock *gs)
{
+#ifdef HAVE_NDO_ADD_GENEVE_PORT
+ struct net_device *dev;
+ struct sock *sk = gs->sock->sk;
+ struct net *net = sock_net(sk);
+ sa_family_t sa_family = geneve_get_sk_family(gs);
+ __be16 port = inet_sk(sk)->inet_sport;
+
+ rcu_read_lock();
+ for_each_netdev_rcu(net, dev) {
+ if (dev->netdev_ops->ndo_add_geneve_port)
+ dev->netdev_ops->ndo_add_geneve_port(dev, sa_family,
+ port);
+ }
+ rcu_read_unlock();
+#else
+#ifdef HAVE_UDP_OFFLOAD
struct sock *sk = gs->sock->sk;
sa_family_t sa_family = sk->sk_family;
int err;
pr_warn("geneve: udp_add_offload failed with status %d\n",
err);
}
+#endif
+#endif
+
}
+static void geneve_notify_del_rx_port(struct geneve_sock *gs)
+{
+#ifdef HAVE_NDO_ADD_GENEVE_PORT
+ struct net_device *dev;
+ struct sock *sk = gs->sock->sk;
+ struct net *net = sock_net(sk);
+ sa_family_t sa_family = geneve_get_sk_family(gs);
+ __be16 port = inet_sk(sk)->inet_sport;
+
+ rcu_read_lock();
+ for_each_netdev_rcu(net, dev) {
+ if (dev->netdev_ops->ndo_del_geneve_port)
+ dev->netdev_ops->ndo_del_geneve_port(dev, sa_family,
+ port);
+ }
+
+ rcu_read_unlock();
+#else
+#ifdef HAVE_UDP_OFFLOAD
+ struct sock *sk = gs->sock->sk;
+ sa_family_t sa_family = sk->sk_family;
+
+ if (sa_family == AF_INET)
+ udp_del_offload(&gs->udp_offloads);
+#endif
+
+#endif
+}
+
+#if defined(HAVE_UDP_OFFLOAD) || \
+ defined(HAVE_UDP_TUNNEL_SOCK_CFG_GRO_RECEIVE)
+
static int geneve_hlen(struct genevehdr *gh)
{
return sizeof(*gh) + gh->opt_len * 4;
goto out;
}
- flush = 0;
-
for (p = *head; p; p = p->next) {
if (!NAPI_GRO_CB(p)->same_flow)
continue;
rcu_read_lock();
ptype = gro_find_receive_by_type(type);
- if (!ptype) {
- flush = 1;
+ if (!ptype)
goto out_unlock;
- }
skb_gro_pull(skb, gh_len);
skb_gro_postpull_rcsum(skb, gh, gh_len);
pp = ptype->callbacks.gro_receive(head, skb);
+ flush = 0;
out_unlock:
rcu_read_unlock();
err = ptype->callbacks.gro_complete(skb, nhoff + gh_len);
rcu_read_unlock();
+
+ skb_set_inner_mac_header(skb, nhoff + gh_len);
return err;
}
#endif
/* Create new listen socket if needed */
static struct geneve_sock *geneve_socket_create(struct net *net, __be16 port,
- bool ipv6)
+ bool ipv6, u32 flags)
{
struct geneve_net *gn = net_generic(net, geneve_net_id);
struct geneve_sock *gs;
if (!gs)
return ERR_PTR(-ENOMEM);
- sock = geneve_create_sock(net, ipv6, port);
+ sock = geneve_create_sock(net, ipv6, port, flags);
if (IS_ERR(sock)) {
kfree(gs);
return ERR_CAST(sock);
gs->udp_offloads.port = port;
gs->udp_offloads.callbacks.gro_receive = geneve_gro_receive;
gs->udp_offloads.callbacks.gro_complete = geneve_gro_complete;
- geneve_notify_add_rx_port(gs);
#endif
+
+ geneve_notify_add_rx_port(gs);
/* Mark socket as an encapsulation socket */
+ memset(&tunnel_cfg, 0, sizeof(tunnel_cfg));
tunnel_cfg.sk_user_data = gs;
tunnel_cfg.encap_type = 1;
+#ifdef HAVE_UDP_TUNNEL_SOCK_CFG_GRO_RECEIVE
+ tunnel_cfg.gro_receive = geneve_gro_receive;
+ tunnel_cfg.gro_complete = geneve_gro_complete;
+#endif
tunnel_cfg.encap_rcv = geneve_udp_encap_recv;
tunnel_cfg.encap_destroy = NULL;
setup_udp_tunnel_sock(net, sock, &tunnel_cfg);
return gs;
}
-static void geneve_notify_del_rx_port(struct geneve_sock *gs)
-{
-#ifdef HAVE_UDP_OFFLOAD
- struct sock *sk = gs->sock->sk;
- sa_family_t sa_family = sk->sk_family;
-
- if (sa_family == AF_INET)
- udp_del_offload(&gs->udp_offloads);
-#endif
-}
-
-static void free_gs_rcu(struct rcu_head *rcu)
+static void __geneve_sock_release(struct geneve_sock *gs)
{
- struct geneve_sock *gs = container_of(rcu, struct geneve_sock, rcu);
-
- kfree(gs);
-}
-
-static void geneve_sock_release(struct geneve_sock *gs)
-{
- if (--gs->refcnt)
+ if (!gs || --gs->refcnt)
return;
list_del(&gs->list);
geneve_notify_del_rx_port(gs);
udp_tunnel_sock_release(gs->sock);
- call_rcu(&gs->rcu, free_gs_rcu);
+ kfree_rcu(gs, rcu);
+}
+
+static void geneve_sock_release(struct geneve_dev *geneve)
+{
+ __geneve_sock_release(geneve->sock4);
+#if IS_ENABLED(CONFIG_IPV6)
+ __geneve_sock_release(geneve->sock6);
+#endif
}
static struct geneve_sock *geneve_find_sock(struct geneve_net *gn,
+ sa_family_t family,
__be16 dst_port)
{
struct geneve_sock *gs;
list_for_each_entry(gs, &gn->sock_list, list) {
if (inet_sk(gs->sock->sk)->inet_sport == dst_port &&
- inet_sk(gs->sock->sk)->sk.sk_family == AF_INET) {
+ geneve_get_sk_family(gs) == family) {
return gs;
}
}
return NULL;
}
-static int geneve_open(struct net_device *dev)
+static int geneve_sock_add(struct geneve_dev *geneve, bool ipv6)
{
- struct geneve_dev *geneve = netdev_priv(dev);
struct net *net = geneve->net;
struct geneve_net *gn = net_generic(net, geneve_net_id);
struct geneve_sock *gs;
__u32 hash;
- gs = geneve_find_sock(gn, geneve->dst_port);
+ gs = geneve_find_sock(gn, ipv6 ? AF_INET6 : AF_INET, geneve->dst_port);
if (gs) {
gs->refcnt++;
goto out;
}
- gs = geneve_socket_create(net, geneve->dst_port, false);
+ gs = geneve_socket_create(net, geneve->dst_port, ipv6, geneve->flags);
if (IS_ERR(gs))
return PTR_ERR(gs);
out:
gs->collect_md = geneve->collect_md;
- geneve->sock = gs;
+ gs->flags = geneve->flags;
+#if IS_ENABLED(CONFIG_IPV6)
+ if (ipv6)
+ geneve->sock6 = gs;
+ else
+#endif
+ geneve->sock4 = gs;
hash = geneve_net_vni_hash(geneve->vni);
hlist_add_head_rcu(&geneve->hlist, &gs->vni_list[hash]);
return 0;
}
+static int geneve_open(struct net_device *dev)
+{
+ struct geneve_dev *geneve = netdev_priv(dev);
+ bool ipv6 = geneve->remote.sa.sa_family == AF_INET6;
+ bool metadata = geneve->collect_md;
+ int ret = 0;
+
+ geneve->sock4 = NULL;
+#if IS_ENABLED(CONFIG_IPV6)
+ geneve->sock6 = NULL;
+ if (ipv6 || metadata)
+ ret = geneve_sock_add(geneve, true);
+#endif
+
+ if (!ret && (!ipv6 || metadata))
+ ret = geneve_sock_add(geneve, false);
+ if (ret < 0)
+ geneve_sock_release(geneve);
+
+ return ret;
+}
+
static int geneve_stop(struct net_device *dev)
{
struct geneve_dev *geneve = netdev_priv(dev);
- struct geneve_sock *gs = geneve->sock;
if (!hlist_unhashed(&geneve->hlist))
hlist_del_rcu(&geneve->hlist);
- geneve_sock_release(gs);
+ geneve_sock_release(geneve);
return 0;
}
+static void geneve_build_header(struct genevehdr *geneveh,
+ __be16 tun_flags, u8 vni[3],
+ u8 options_len, u8 *options)
+{
+ geneveh->ver = GENEVE_VER;
+ geneveh->opt_len = options_len / 4;
+ geneveh->oam = !!(tun_flags & TUNNEL_OAM);
+ geneveh->critical = !!(tun_flags & TUNNEL_CRIT_OPT);
+ geneveh->rsvd1 = 0;
+ memcpy(geneveh->vni, vni, 3);
+ geneveh->proto_type = htons(ETH_P_TEB);
+ geneveh->rsvd2 = 0;
+
+ memcpy(geneveh->options, options, options_len);
+}
+
static int geneve_build_skb(struct rtable *rt, struct sk_buff *skb,
__be16 tun_flags, u8 vni[3], u8 opt_len, u8 *opt,
- bool csum)
+ u32 flags, bool xnet)
{
struct genevehdr *gnvh;
int min_headroom;
int err;
+ bool udp_sum = !(flags & GENEVE_F_UDP_ZERO_CSUM_TX);
+
+ skb_scrub_packet(skb, xnet);
min_headroom = LL_RESERVED_SPACE(rt->dst.dev) + rt->dst.header_len
- + GENEVE_BASE_HLEN + opt_len + sizeof(struct iphdr)
- + (skb_vlan_tag_present(skb) ? VLAN_HLEN : 0);
+ + GENEVE_BASE_HLEN + opt_len + sizeof(struct iphdr);
err = skb_cow_head(skb, min_headroom);
- if (unlikely(err)) {
- kfree_skb(skb);
+ if (unlikely(err))
goto free_rt;
- }
- skb = vlan_hwaccel_push_inside(skb);
- if (!skb) {
- err = -ENOMEM;
+ err = udp_tunnel_handle_offloads(skb, udp_sum);
+ if (err)
goto free_rt;
- }
- skb = udp_tunnel_handle_offloads(skb, csum, 0, false);
- if (IS_ERR(skb)) {
- err = PTR_ERR(skb);
- goto free_rt;
- }
gnvh = (struct genevehdr *)__skb_push(skb, sizeof(*gnvh) + opt_len);
- gnvh->ver = GENEVE_VER;
- gnvh->opt_len = opt_len / 4;
- gnvh->oam = !!(tun_flags & TUNNEL_OAM);
- gnvh->critical = !!(tun_flags & TUNNEL_CRIT_OPT);
- gnvh->rsvd1 = 0;
- memcpy(gnvh->vni, vni, 3);
- gnvh->proto_type = htons(ETH_P_TEB);
- gnvh->rsvd2 = 0;
- memcpy(gnvh->options, opt, opt_len);
+ geneve_build_header(gnvh, tun_flags, vni, opt_len, opt);
ovs_skb_set_inner_protocol(skb, htons(ETH_P_TEB));
return 0;
return err;
}
-static struct rtable *geneve_get_rt(struct sk_buff *skb,
- struct net_device *dev,
- struct flowi4 *fl4,
- struct ip_tunnel_info *info)
+#if IS_ENABLED(CONFIG_IPV6)
+static int geneve6_build_skb(struct dst_entry *dst, struct sk_buff *skb,
+ __be16 tun_flags, u8 vni[3], u8 opt_len, u8 *opt,
+ u32 flags, bool xnet)
+{
+ struct genevehdr *gnvh;
+ int min_headroom;
+ int err;
+ bool udp_sum = !(flags & GENEVE_F_UDP_ZERO_CSUM6_TX);
+
+ skb_scrub_packet(skb, xnet);
+
+ min_headroom = LL_RESERVED_SPACE(dst->dev) + dst->header_len
+ + GENEVE_BASE_HLEN + opt_len + sizeof(struct ipv6hdr);
+ err = skb_cow_head(skb, min_headroom);
+ if (unlikely(err))
+ goto free_dst;
+
+ err = udp_tunnel_handle_offloads(skb, udp_sum);
+ if (err)
+ goto free_dst;
+
+ gnvh = (struct genevehdr *)__skb_push(skb, sizeof(*gnvh) + opt_len);
+ geneve_build_header(gnvh, tun_flags, vni, opt_len, opt);
+
+ ovs_skb_set_inner_protocol(skb, htons(ETH_P_TEB));
+ return 0;
+
+free_dst:
+ dst_release(dst);
+ return err;
+}
+#endif
+
+static struct rtable *geneve_get_v4_rt(struct sk_buff *skb,
+ struct net_device *dev,
+ struct flowi4 *fl4,
+ struct ip_tunnel_info *info)
{
+ bool use_cache = ip_tunnel_dst_cache_usable(skb, info);
struct geneve_dev *geneve = netdev_priv(dev);
+ struct dst_cache *dst_cache;
struct rtable *rt = NULL;
__u8 tos;
fl4->daddr = info->key.u.ipv4.dst;
fl4->saddr = info->key.u.ipv4.src;
fl4->flowi4_tos = RT_TOS(info->key.tos);
+ dst_cache = &info->dst_cache;
} else {
tos = geneve->tos;
if (tos == 1) {
const struct iphdr *iip = ip_hdr(skb);
tos = ip_tunnel_get_dsfield(iip, skb);
+ use_cache = false;
}
fl4->flowi4_tos = RT_TOS(tos);
- fl4->daddr = geneve->remote.sin_addr.s_addr;
+ fl4->daddr = geneve->remote.sin.sin_addr.s_addr;
+ dst_cache = &geneve->dst_cache;
+ }
+
+ if (use_cache) {
+ rt = dst_cache_get_ip4(dst_cache, &fl4->saddr);
+ if (rt)
+ return rt;
}
rt = ip_route_output_key(geneve->net, fl4);
if (IS_ERR(rt)) {
netdev_dbg(dev, "no route to %pI4\n", &fl4->daddr);
- dev->stats.tx_carrier_errors++;
- return rt;
+ return ERR_PTR(-ENETUNREACH);
}
if (rt->dst.dev == dev) { /* is this necessary? */
netdev_dbg(dev, "circular route to %pI4\n", &fl4->daddr);
- dev->stats.collisions++;
ip_rt_put(rt);
- return ERR_PTR(-EINVAL);
+ return ERR_PTR(-ELOOP);
}
+ if (use_cache)
+ dst_cache_set_ip4(dst_cache, &rt->dst, fl4->saddr);
return rt;
}
+#if IS_ENABLED(CONFIG_IPV6)
+static struct dst_entry *geneve_get_v6_dst(struct sk_buff *skb,
+ struct net_device *dev,
+ struct flowi6 *fl6,
+ struct ip_tunnel_info *info)
+{
+ bool use_cache = ip_tunnel_dst_cache_usable(skb, info);
+ struct geneve_dev *geneve = netdev_priv(dev);
+ struct geneve_sock *gs6 = geneve->sock6;
+ struct dst_entry *dst = NULL;
+ struct dst_cache *dst_cache;
+ __u8 prio;
+
+ memset(fl6, 0, sizeof(*fl6));
+ fl6->flowi6_mark = skb->mark;
+ fl6->flowi6_proto = IPPROTO_UDP;
+
+ if (info) {
+ fl6->daddr = info->key.u.ipv6.dst;
+ fl6->saddr = info->key.u.ipv6.src;
+ fl6->flowlabel = ip6_make_flowinfo(RT_TOS(info->key.tos),
+ info->key.label);
+ dst_cache = &info->dst_cache;
+ } else {
+ prio = geneve->tos;
+ if (prio == 1) {
+ const struct iphdr *iip = ip_hdr(skb);
+
+ prio = ip_tunnel_get_dsfield(iip, skb);
+ use_cache = false;
+ }
+
+ fl6->flowlabel = ip6_make_flowinfo(RT_TOS(prio),
+ geneve->label);
+ fl6->daddr = geneve->remote.sin6.sin6_addr;
+ dst_cache = &geneve->dst_cache;
+ }
+
+ if (use_cache) {
+ dst = dst_cache_get_ip6(dst_cache, &fl6->saddr);
+ if (dst)
+ return dst;
+ }
+
+#ifdef HAVE_IPV6_DST_LOOKUP_NET
+ if (ipv6_stub->ipv6_dst_lookup(geneve->net, gs6->sock->sk, &dst, fl6)) {
+#else
+#ifdef HAVE_IPV6_STUB
+ if (ipv6_stub->ipv6_dst_lookup(gs6->sock->sk, &dst, fl6)) {
+#else
+ if (ip6_dst_lookup(gs6->sock->sk, &dst, fl6)) {
+#endif
+#endif
+ netdev_dbg(dev, "no route to %pI6\n", &fl6->daddr);
+ return ERR_PTR(-ENETUNREACH);
+ }
+ if (dst->dev == dev) { /* is this necessary? */
+ netdev_dbg(dev, "circular route to %pI6\n", &fl6->daddr);
+ dst_release(dst);
+ return ERR_PTR(-ELOOP);
+ }
+
+ if (use_cache)
+ dst_cache_set_ip6(dst_cache, dst, &fl6->saddr);
+ return dst;
+}
+#endif
+
/* Convert 64 bit tunnel ID to 24 bit VNI. */
static void tunnel_id_to_vni(__be64 tun_id, __u8 *vni)
{
#endif
}
-netdev_tx_t rpl_geneve_xmit(struct sk_buff *skb)
+static netdev_tx_t geneve_xmit_skb(struct sk_buff *skb, struct net_device *dev,
+ struct ip_tunnel_info *info)
{
- struct net_device *dev = skb->dev;
struct geneve_dev *geneve = netdev_priv(dev);
- struct geneve_sock *gs = geneve->sock;
- struct ip_tunnel_info *info = NULL;
+ struct geneve_sock *gs4 = geneve->sock4;
struct rtable *rt = NULL;
const struct iphdr *iip; /* interior IP header */
+ int err = -EINVAL;
struct flowi4 fl4;
__u8 tos, ttl;
__be16 sport;
- bool udp_csum;
__be16 df;
- int err;
+ bool xnet = !net_eq(geneve->net, dev_net(geneve->dev));
+ u32 flags = geneve->flags;
if (geneve->collect_md) {
- info = skb_tunnel_info(skb);
- if (unlikely(info && !(info->mode & IP_TUNNEL_INFO_TX))) {
+ if (unlikely(!info || !(info->mode & IP_TUNNEL_INFO_TX))) {
netdev_dbg(dev, "no tunnel metadata\n");
goto tx_error;
}
goto tx_error;
}
- rt = geneve_get_rt(skb, dev, &fl4, info);
+ rt = geneve_get_v4_rt(skb, dev, &fl4, info);
if (IS_ERR(rt)) {
- netdev_dbg(dev, "no route to %pI4\n", &fl4.daddr);
- dev->stats.tx_carrier_errors++;
+ err = PTR_ERR(rt);
goto tx_error;
}
u8 vni[3];
tunnel_id_to_vni(key->tun_id, vni);
- if (key->tun_flags & TUNNEL_GENEVE_OPT)
+ if (info->options_len)
opts = ip_tunnel_info_opts(info);
- udp_csum = !!(key->tun_flags & TUNNEL_CSUM);
+ if (key->tun_flags & TUNNEL_CSUM)
+ flags &= ~GENEVE_F_UDP_ZERO_CSUM_TX;
+ else
+ flags |= GENEVE_F_UDP_ZERO_CSUM_TX;
+
err = geneve_build_skb(rt, skb, key->tun_flags, vni,
- info->options_len, opts, udp_csum);
+ info->options_len, opts, flags, xnet);
if (unlikely(err))
- goto err;
+ goto tx_error;
tos = ip_tunnel_ecn_encap(key->tos, iip, skb);
ttl = key->ttl;
df = key->tun_flags & TUNNEL_DONT_FRAGMENT ? htons(IP_DF) : 0;
} else {
- udp_csum = false;
err = geneve_build_skb(rt, skb, 0, geneve->vni,
- 0, NULL, udp_csum);
+ 0, NULL, flags, xnet);
if (unlikely(err))
- goto err;
+ goto tx_error;
tos = ip_tunnel_ecn_encap(fl4.flowi4_tos, iip, skb);
ttl = geneve->ttl;
ttl = ttl ? : ip4_dst_hoplimit(&rt->dst);
df = 0;
}
- err = udp_tunnel_xmit_skb(rt, gs->sock->sk, skb, fl4.saddr, fl4.daddr,
- tos, ttl, df, sport, geneve->dst_port,
- !net_eq(geneve->net, dev_net(geneve->dev)),
- !udp_csum);
+ udp_tunnel_xmit_skb(rt, gs4->sock->sk, skb, fl4.saddr, fl4.daddr,
+ tos, ttl, df, sport, geneve->dst_port,
+ !net_eq(geneve->net, dev_net(geneve->dev)),
+ !!(flags & GENEVE_F_UDP_ZERO_CSUM_TX));
- iptunnel_xmit_stats(err, &dev->stats, (struct pcpu_sw_netstats __percpu *) dev->tstats);
return NETDEV_TX_OK;
tx_error:
dev_kfree_skb(skb);
-err:
+
+ if (err == -ELOOP)
+ dev->stats.collisions++;
+ else if (err == -ENETUNREACH)
+ dev->stats.tx_carrier_errors++;
+
dev->stats.tx_errors++;
return NETDEV_TX_OK;
}
-EXPORT_SYMBOL(rpl_geneve_xmit);
+
+#if IS_ENABLED(CONFIG_IPV6)
+static netdev_tx_t geneve6_xmit_skb(struct sk_buff *skb, struct net_device *dev,
+ struct ip_tunnel_info *info)
+{
+ struct geneve_dev *geneve = netdev_priv(dev);
+ struct geneve_sock *gs6 = geneve->sock6;
+ struct dst_entry *dst = NULL;
+ const struct iphdr *iip; /* interior IP header */
+ int err = -EINVAL;
+ struct flowi6 fl6;
+ __u8 prio, ttl;
+ __be16 sport;
+ __be32 label;
+ bool xnet = !net_eq(geneve->net, dev_net(geneve->dev));
+ u32 flags = geneve->flags;
+
+ if (geneve->collect_md) {
+ if (unlikely(!info || !(info->mode & IP_TUNNEL_INFO_TX))) {
+ netdev_dbg(dev, "no tunnel metadata\n");
+ goto tx_error;
+ }
+ }
+
+ dst = geneve_get_v6_dst(skb, dev, &fl6, info);
+ if (IS_ERR(dst)) {
+ err = PTR_ERR(dst);
+ goto tx_error;
+ }
+
+ sport = udp_flow_src_port(geneve->net, skb, 1, USHRT_MAX, true);
+ skb_reset_mac_header(skb);
+
+ iip = ip_hdr(skb);
+
+ if (info) {
+ const struct ip_tunnel_key *key = &info->key;
+ u8 *opts = NULL;
+ u8 vni[3];
+
+ tunnel_id_to_vni(key->tun_id, vni);
+ if (info->options_len)
+ opts = ip_tunnel_info_opts(info);
+
+ if (key->tun_flags & TUNNEL_CSUM)
+ flags &= ~GENEVE_F_UDP_ZERO_CSUM6_TX;
+ else
+ flags |= GENEVE_F_UDP_ZERO_CSUM6_TX;
+
+ err = geneve6_build_skb(dst, skb, key->tun_flags, vni,
+ info->options_len, opts,
+ flags, xnet);
+ if (unlikely(err))
+ goto tx_error;
+
+ prio = ip_tunnel_ecn_encap(key->tos, iip, skb);
+ ttl = key->ttl;
+ label = info->key.label;
+ } else {
+ err = geneve6_build_skb(dst, skb, 0, geneve->vni,
+ 0, NULL, flags, xnet);
+ if (unlikely(err))
+ goto tx_error;
+
+ prio = ip_tunnel_ecn_encap(ip6_tclass(fl6.flowlabel),
+ iip, skb);
+ ttl = geneve->ttl;
+ if (!ttl && ipv6_addr_is_multicast(&fl6.daddr))
+ ttl = 1;
+ ttl = ttl ? : ip6_dst_hoplimit(dst);
+ label = geneve->label;
+ }
+ udp_tunnel6_xmit_skb(dst, gs6->sock->sk, skb, dev,
+ &fl6.saddr, &fl6.daddr, prio, ttl, label,
+ sport, geneve->dst_port,
+ !!(flags & GENEVE_F_UDP_ZERO_CSUM6_TX));
+ return NETDEV_TX_OK;
+
+tx_error:
+ dev_kfree_skb(skb);
+
+ if (err == -ELOOP)
+ dev->stats.collisions++;
+ else if (err == -ENETUNREACH)
+ dev->stats.tx_carrier_errors++;
+
+ dev->stats.tx_errors++;
+ return NETDEV_TX_OK;
+}
+#endif
+
+netdev_tx_t rpl_geneve_xmit(struct sk_buff *skb)
+{
+ struct net_device *dev = skb->dev;
+ struct geneve_dev *geneve = netdev_priv(dev);
+ struct ip_tunnel_info *info = NULL;
+
+ if (geneve->collect_md)
+ info = skb_tunnel_info(skb);
+
+#if IS_ENABLED(CONFIG_IPV6)
+ if ((info && ip_tunnel_info_af(info) == AF_INET6) ||
+ (!info && geneve->remote.sa.sa_family == AF_INET6))
+ return geneve6_xmit_skb(skb, dev, info);
+#endif
+ return geneve_xmit_skb(skb, dev, info);
+}
+EXPORT_SYMBOL_GPL(rpl_geneve_xmit);
static netdev_tx_t geneve_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
* configurations.
*/
int max_mtu = IP_MAX_MTU - GENEVE_BASE_HLEN - sizeof(struct iphdr)
- - dev->hard_header_len;
+ - dev->hard_header_len;
if (new_mtu < 68)
return -EINVAL;
return __geneve_change_mtu(dev, new_mtu, true);
}
+int ovs_geneve_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb)
+{
+ struct ip_tunnel_info *info = skb_tunnel_info(skb);
+ struct geneve_dev *geneve = netdev_priv(dev);
+ struct rtable *rt;
+ struct flowi4 fl4;
+#if IS_ENABLED(CONFIG_IPV6)
+ struct dst_entry *dst;
+ struct flowi6 fl6;
+#endif
+
+ if (ip_tunnel_info_af(info) == AF_INET) {
+ rt = geneve_get_v4_rt(skb, dev, &fl4, info);
+ if (IS_ERR(rt))
+ return PTR_ERR(rt);
+
+ ip_rt_put(rt);
+ info->key.u.ipv4.src = fl4.saddr;
+#if IS_ENABLED(CONFIG_IPV6)
+ } else if (ip_tunnel_info_af(info) == AF_INET6) {
+ dst = geneve_get_v6_dst(skb, dev, &fl6, info);
+ if (IS_ERR(dst))
+ return PTR_ERR(dst);
+
+ dst_release(dst);
+ info->key.u.ipv6.src = fl6.saddr;
+#endif
+ } else {
+ return -EINVAL;
+ }
+
+ info->key.tp_src = udp_flow_src_port(geneve->net, skb,
+ 1, USHRT_MAX, true);
+ info->key.tp_dst = geneve->dst_port;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ovs_geneve_fill_metadata_dst);
+
static const struct net_device_ops geneve_netdev_ops = {
.ndo_init = geneve_init,
.ndo_uninit = geneve_uninit,
- .ndo_get_stats64 = ip_tunnel_get_stats64,
.ndo_open = geneve_open,
.ndo_stop = geneve_stop,
.ndo_start_xmit = geneve_dev_xmit,
+ .ndo_get_stats64 = ip_tunnel_get_stats64,
.ndo_change_mtu = geneve_change_mtu,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = eth_mac_addr,
+#ifdef HAVE_NDO_FILL_METADATA_DST
+ .ndo_fill_metadata_dst = geneve_fill_metadata_dst,
+#endif
};
static void geneve_get_drvinfo(struct net_device *dev,
.name = "geneve",
};
+/* Calls the ndo_add_geneve_port of the caller in order to
+ * supply the listening GENEVE udp ports. Callers are expected
+ * to implement the ndo_add_geneve_port.
+ */
+static void geneve_push_rx_ports(struct net_device *dev)
+{
+#ifdef HAVE_NDO_ADD_GENEVE_PORT
+ struct net *net = dev_net(dev);
+ struct geneve_net *gn = net_generic(net, geneve_net_id);
+ struct geneve_sock *gs;
+ sa_family_t sa_family;
+ struct sock *sk;
+ __be16 port;
+
+ if (!dev->netdev_ops->ndo_add_geneve_port)
+ return;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(gs, &gn->sock_list, list) {
+ sk = gs->sock->sk;
+ sa_family = sk->sk_family;
+ port = inet_sk(sk)->inet_sport;
+ dev->netdev_ops->ndo_add_geneve_port(dev, sa_family, port);
+ }
+ rcu_read_unlock();
+#endif
+}
+
/* Initialize the device structure. */
static void geneve_setup(struct net_device *dev)
{
dev->features |= NETIF_F_RXCSUM;
dev->features |= NETIF_F_GSO_SOFTWARE;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,39)
dev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXCSUM;
dev->hw_features |= NETIF_F_GSO_SOFTWARE;
-#endif
+
#if 0
- /* Not required */
netif_keep_dst(dev);
#endif
+ dev->priv_flags &= ~IFF_TX_SKB_SHARING;
dev->priv_flags |= IFF_LIVE_ADDR_CHANGE | IFF_NO_QUEUE;
eth_hw_addr_random(dev);
}
static const struct nla_policy geneve_policy[IFLA_GENEVE_MAX + 1] = {
[IFLA_GENEVE_ID] = { .type = NLA_U32 },
[IFLA_GENEVE_REMOTE] = { .len = FIELD_SIZEOF(struct iphdr, daddr) },
+ [IFLA_GENEVE_REMOTE6] = { .len = sizeof(struct in6_addr) },
[IFLA_GENEVE_TTL] = { .type = NLA_U8 },
[IFLA_GENEVE_TOS] = { .type = NLA_U8 },
+ [IFLA_GENEVE_LABEL] = { .type = NLA_U32 },
[IFLA_GENEVE_PORT] = { .type = NLA_U16 },
[IFLA_GENEVE_COLLECT_METADATA] = { .type = NLA_FLAG },
+ [IFLA_GENEVE_UDP_CSUM] = { .type = NLA_U8 },
+ [IFLA_GENEVE_UDP_ZERO_CSUM6_TX] = { .type = NLA_U8 },
+ [IFLA_GENEVE_UDP_ZERO_CSUM6_RX] = { .type = NLA_U8 },
};
static int geneve_validate(struct nlattr *tb[], struct nlattr *data[])
static struct geneve_dev *geneve_find_dev(struct geneve_net *gn,
__be16 dst_port,
- __be32 rem_addr,
+ union geneve_addr *remote,
u8 vni[],
bool *tun_on_same_port,
bool *tun_collect_md)
*tun_on_same_port = true;
}
if (!memcmp(vni, geneve->vni, sizeof(geneve->vni)) &&
- rem_addr == geneve->remote.sin_addr.s_addr &&
+ !memcmp(remote, &geneve->remote, sizeof(geneve->remote)) &&
dst_port == geneve->dst_port)
t = geneve;
}
}
static int geneve_configure(struct net *net, struct net_device *dev,
- __be32 rem_addr, __u32 vni, __u8 ttl, __u8 tos,
- __be16 dst_port, bool metadata)
+ union geneve_addr *remote,
+ __u32 vni, __u8 ttl, __u8 tos, __be32 label,
+ __be16 dst_port, bool metadata, u32 flags)
{
struct geneve_net *gn = net_generic(net, geneve_net_id);
struct geneve_dev *t, *geneve = netdev_priv(dev);
bool tun_collect_md, tun_on_same_port;
- int err;
+ int err, encap_len;
- if (metadata) {
- if (rem_addr || vni || tos || ttl)
- return -EINVAL;
- }
+ if (!remote)
+ return -EINVAL;
+ if (metadata &&
+ (remote->sa.sa_family != AF_UNSPEC || vni || tos || ttl || label))
+ return -EINVAL;
geneve->net = net;
geneve->dev = dev;
geneve->vni[1] = (vni & 0x0000ff00) >> 8;
geneve->vni[2] = vni & 0x000000ff;
- geneve->remote.sin_addr.s_addr = rem_addr;
- if (IN_MULTICAST(ntohl(geneve->remote.sin_addr.s_addr)))
+ if ((remote->sa.sa_family == AF_INET &&
+ IN_MULTICAST(ntohl(remote->sin.sin_addr.s_addr))) ||
+ (remote->sa.sa_family == AF_INET6 &&
+ ipv6_addr_is_multicast(&remote->sin6.sin6_addr)))
return -EINVAL;
+ if (label && remote->sa.sa_family != AF_INET6)
+ return -EINVAL;
+
+ geneve->remote = *remote;
geneve->ttl = ttl;
geneve->tos = tos;
+ geneve->label = label;
geneve->dst_port = dst_port;
geneve->collect_md = metadata;
+ geneve->flags = flags;
- t = geneve_find_dev(gn, dst_port, rem_addr, geneve->vni,
+ t = geneve_find_dev(gn, dst_port, remote, geneve->vni,
&tun_on_same_port, &tun_collect_md);
if (t)
return -EBUSY;
+ /* make enough headroom for basic scenario */
+ encap_len = GENEVE_BASE_HLEN + ETH_HLEN;
+ if (remote->sa.sa_family == AF_INET)
+ encap_len += sizeof(struct iphdr);
+ else
+ encap_len += sizeof(struct ipv6hdr);
+ dev->needed_headroom = encap_len + ETH_HLEN;
+
if (metadata) {
if (tun_on_same_port)
return -EPERM;
return -EPERM;
}
+ dst_cache_reset(&geneve->dst_cache);
+
err = register_netdevice(dev);
if (err)
return err;
return 0;
}
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)
-static int geneve_newlink(struct net_device *dev,
- struct nlattr *tb[], struct nlattr *data[])
-{
- struct net *net = &init_net;
-#else
static int geneve_newlink(struct net *net, struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[])
{
-#endif
__be16 dst_port = htons(GENEVE_UDP_PORT);
__u8 ttl = 0, tos = 0;
bool metadata = false;
- __be32 rem_addr;
- __u32 vni;
+ union geneve_addr remote = geneve_remote_unspec;
+ __be32 label = 0;
+ __u32 vni = 0;
+ u32 flags = 0;
- if (!data[IFLA_GENEVE_ID] || !data[IFLA_GENEVE_REMOTE])
+ if (data[IFLA_GENEVE_REMOTE] && data[IFLA_GENEVE_REMOTE6])
return -EINVAL;
- vni = nla_get_u32(data[IFLA_GENEVE_ID]);
- rem_addr = nla_get_in_addr(data[IFLA_GENEVE_REMOTE]);
+ if (data[IFLA_GENEVE_REMOTE]) {
+ remote.sa.sa_family = AF_INET;
+ remote.sin.sin_addr.s_addr =
+ nla_get_in_addr(data[IFLA_GENEVE_REMOTE]);
+ }
+
+ if (data[IFLA_GENEVE_REMOTE6]) {
+ if (!IS_ENABLED(CONFIG_IPV6))
+ return -EPFNOSUPPORT;
+
+ remote.sa.sa_family = AF_INET6;
+ remote.sin6.sin6_addr =
+ nla_get_in6_addr(data[IFLA_GENEVE_REMOTE6]);
+
+ if (ipv6_addr_type(&remote.sin6.sin6_addr) &
+ IPV6_ADDR_LINKLOCAL) {
+ netdev_dbg(dev, "link-local remote is unsupported\n");
+ return -EINVAL;
+ }
+ }
+
+ if (data[IFLA_GENEVE_ID])
+ vni = nla_get_u32(data[IFLA_GENEVE_ID]);
if (data[IFLA_GENEVE_TTL])
ttl = nla_get_u8(data[IFLA_GENEVE_TTL]);
if (data[IFLA_GENEVE_TOS])
tos = nla_get_u8(data[IFLA_GENEVE_TOS]);
+ if (data[IFLA_GENEVE_LABEL])
+ label = nla_get_be32(data[IFLA_GENEVE_LABEL]) &
+ IPV6_FLOWLABEL_MASK;
+
if (data[IFLA_GENEVE_PORT])
dst_port = nla_get_be16(data[IFLA_GENEVE_PORT]);
if (data[IFLA_GENEVE_COLLECT_METADATA])
metadata = true;
- return geneve_configure(net, dev, rem_addr, vni,
- ttl, tos, dst_port, metadata);
+ if (data[IFLA_GENEVE_UDP_CSUM] &&
+ !nla_get_u8(data[IFLA_GENEVE_UDP_CSUM]))
+ flags |= GENEVE_F_UDP_ZERO_CSUM_TX;
+
+ if (data[IFLA_GENEVE_UDP_ZERO_CSUM6_TX] &&
+ nla_get_u8(data[IFLA_GENEVE_UDP_ZERO_CSUM6_TX]))
+ flags |= GENEVE_F_UDP_ZERO_CSUM6_TX;
+
+ if (data[IFLA_GENEVE_UDP_ZERO_CSUM6_RX] &&
+ nla_get_u8(data[IFLA_GENEVE_UDP_ZERO_CSUM6_RX]))
+ flags |= GENEVE_F_UDP_ZERO_CSUM6_RX;
+
+ return geneve_configure(net, dev, &remote, vni, ttl, tos, label,
+ dst_port, metadata, flags);
}
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39)
-static void geneve_dellink(struct net_device *dev)
-#else
static void geneve_dellink(struct net_device *dev, struct list_head *head)
-#endif
{
struct geneve_dev *geneve = netdev_priv(dev);
static size_t geneve_get_size(const struct net_device *dev)
{
return nla_total_size(sizeof(__u32)) + /* IFLA_GENEVE_ID */
- nla_total_size(sizeof(struct in_addr)) + /* IFLA_GENEVE_REMOTE */
+ nla_total_size(sizeof(struct in6_addr)) + /* IFLA_GENEVE_REMOTE{6} */
nla_total_size(sizeof(__u8)) + /* IFLA_GENEVE_TTL */
nla_total_size(sizeof(__u8)) + /* IFLA_GENEVE_TOS */
+ nla_total_size(sizeof(__be32)) + /* IFLA_GENEVE_LABEL */
nla_total_size(sizeof(__be16)) + /* IFLA_GENEVE_PORT */
nla_total_size(0) + /* IFLA_GENEVE_COLLECT_METADATA */
+ nla_total_size(sizeof(__u8)) + /* IFLA_GENEVE_UDP_CSUM */
+ nla_total_size(sizeof(__u8)) + /* IFLA_GENEVE_UDP_ZERO_CSUM6_TX */
+ nla_total_size(sizeof(__u8)) + /* IFLA_GENEVE_UDP_ZERO_CSUM6_RX */
0;
}
if (nla_put_u32(skb, IFLA_GENEVE_ID, vni))
goto nla_put_failure;
- if (nla_put_in_addr(skb, IFLA_GENEVE_REMOTE,
- geneve->remote.sin_addr.s_addr))
- goto nla_put_failure;
+ if (geneve->remote.sa.sa_family == AF_INET) {
+ if (nla_put_in_addr(skb, IFLA_GENEVE_REMOTE,
+ geneve->remote.sin.sin_addr.s_addr))
+ goto nla_put_failure;
+#if IS_ENABLED(CONFIG_IPV6)
+ } else {
+ if (nla_put_in6_addr(skb, IFLA_GENEVE_REMOTE6,
+ &geneve->remote.sin6.sin6_addr))
+ goto nla_put_failure;
+#endif
+ }
if (nla_put_u8(skb, IFLA_GENEVE_TTL, geneve->ttl) ||
- nla_put_u8(skb, IFLA_GENEVE_TOS, geneve->tos))
+ nla_put_u8(skb, IFLA_GENEVE_TOS, geneve->tos) ||
+ nla_put_be32(skb, IFLA_GENEVE_LABEL, geneve->label))
goto nla_put_failure;
if (nla_put_be16(skb, IFLA_GENEVE_PORT, geneve->dst_port))
goto nla_put_failure;
}
+ if (nla_put_u8(skb, IFLA_GENEVE_UDP_CSUM,
+ !(geneve->flags & GENEVE_F_UDP_ZERO_CSUM_TX)) ||
+ nla_put_u8(skb, IFLA_GENEVE_UDP_ZERO_CSUM6_TX,
+ !!(geneve->flags & GENEVE_F_UDP_ZERO_CSUM6_TX)) ||
+ nla_put_u8(skb, IFLA_GENEVE_UDP_ZERO_CSUM6_RX,
+ !!(geneve->flags & GENEVE_F_UDP_ZERO_CSUM6_RX)))
+ goto nla_put_failure;
+
return 0;
nla_put_failure:
}
static struct rtnl_link_ops geneve_link_ops __read_mostly = {
- .kind = "ovs_geneve",
+ .kind = "geneve",
.maxtype = IFLA_GENEVE_MAX,
.policy = geneve_policy,
.priv_size = sizeof(struct geneve_dev),
};
struct net_device *rpl_geneve_dev_create_fb(struct net *net, const char *name,
- u8 name_assign_type, u16 dst_port)
+ u8 name_assign_type, u16 dst_port)
{
struct nlattr *tb[IFLA_MAX + 1];
struct net_device *dev;
+ LIST_HEAD(list_kill);
int err;
memset(tb, 0, sizeof(tb));
- dev = rtnl_create_link(net, (char *) name, name_assign_type,
+ dev = rtnl_create_link(net, name, name_assign_type,
&geneve_link_ops, tb);
if (IS_ERR(dev))
return dev;
- err = geneve_configure(net, dev, 0, 0, 0, 0, htons(dst_port), true);
- if (err)
- goto err;
+ err = geneve_configure(net, dev, &geneve_remote_unspec,
+ 0, 0, 0, 0, htons(dst_port), true,
+ GENEVE_F_UDP_ZERO_CSUM6_RX);
+ if (err) {
+ free_netdev(dev);
+ return ERR_PTR(err);
+ }
/* openvswitch users expect packet sizes to be unrestricted,
* so set the largest MTU we can.
if (err)
goto err;
+ err = rtnl_configure_link(dev, NULL);
+ if (err < 0)
+ goto err;
+
return dev;
-err:
- free_netdev(dev);
+ err:
+ geneve_dellink(dev, &list_kill);
+ unregister_netdevice_many(&list_kill);
return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(rpl_geneve_dev_create_fb);
+static int geneve_netdevice_event(struct notifier_block *unused,
+ unsigned long event, void *ptr)
+{
+ struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+
+ if (event == NETDEV_OFFLOAD_PUSH_GENEVE)
+ geneve_push_rx_ports(dev);
+
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block geneve_notifier_block __read_mostly = {
+ .notifier_call = geneve_netdevice_event,
+};
+
static __net_init int geneve_init_net(struct net *net)
{
struct geneve_net *gn = net_generic(net, geneve_net_id);
if (rc)
goto out1;
- rc = rtnl_link_register(&geneve_link_ops);
+ rc = register_netdevice_notifier(&geneve_notifier_block);
if (rc)
goto out2;
+ rc = rtnl_link_register(&geneve_link_ops);
+ if (rc)
+ goto out3;
+
pr_info("Geneve tunneling driver\n");
return 0;
+
+out3:
+ unregister_netdevice_notifier(&geneve_notifier_block);
out2:
unregister_pernet_subsys(&geneve_net_ops);
out1:
void rpl_geneve_cleanup_module(void)
{
rtnl_link_unregister(&geneve_link_ops);
+ unregister_netdevice_notifier(&geneve_notifier_block);
unregister_pernet_subsys(&geneve_net_ops);
}
+
#endif
projects / cascardo / ovs.git / blobdiff