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geneve: Move device hash table to geneve socket. 

This change simplifies Geneve Tunnel hash table management.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Reviewed-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pravin B Shelar 2015-08-26 23:46:55 -07:00 committed by David S. Miller
parent 371bd1061d
commit 66d47003f7
1 changed files with 17 additions and 26 deletions
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43
drivers/net/geneve.c
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@ -40,7 +40,6 @@ MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
/* per-network namespace private data for this module */
struct geneve_net {
struct list_head geneve_list;
struct hlist_head vni_list[VNI_HASH_SIZE];
struct list_head sock_list;
};
@ -63,12 +62,12 @@ struct geneve_dev {
struct geneve_sock {
bool collect_md;
struct geneve_net *gn;
struct list_head list;
struct socket *sock;
struct rcu_head rcu;
int refcnt;
struct udp_offload udp_offloads;
struct hlist_head vni_list[VNI_HASH_SIZE];
};
static inline __u32 geneve_net_vni_hash(u8 vni[3])
@ -90,7 +89,7 @@ static __be64 vni_to_tunnel_id(const __u8 *vni)
#endif
}
static struct geneve_dev *geneve_lookup(struct geneve_net *gn, __be16 port,
static struct geneve_dev *geneve_lookup(struct geneve_sock *gs,
__be32 addr, u8 vni[])
{
struct hlist_head *vni_list_head;
@ -99,14 +98,12 @@ static struct geneve_dev *geneve_lookup(struct geneve_net *gn, __be16 port,
/* Find the device for this VNI */
hash = geneve_net_vni_hash(vni);
vni_list_head = &gn->vni_list[hash];
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 &&
port == geneve->dst_port) {
addr == geneve->remote.sin_addr.s_addr)
return geneve;
}
}
return NULL;
}
@ -118,9 +115,7 @@ static inline struct genevehdr *geneve_hdr(const struct sk_buff *skb)
/* geneve receive/decap routine */
static void geneve_rx(struct geneve_sock *gs, struct sk_buff *skb)
{
struct inet_sock *sk = inet_sk(gs->sock->sk);
struct genevehdr *gnvh = geneve_hdr(skb);
struct geneve_net *gn = gs->gn;
struct metadata_dst *tun_dst = NULL;
struct geneve_dev *geneve = NULL;
struct pcpu_sw_netstats *stats;
@ -129,8 +124,6 @@ static void geneve_rx(struct geneve_sock *gs, struct sk_buff *skb)
__be32 addr;
int err;
iph = ip_hdr(skb); /* Still outer IP header... */
if (gs->collect_md) {
static u8 zero_vni[3];
@ -138,10 +131,11 @@ static void geneve_rx(struct geneve_sock *gs, struct sk_buff *skb)
addr = 0;
} else {
vni = gnvh->vni;
iph = ip_hdr(skb); /* Still outer IP header... */
addr = iph->saddr;
}
geneve = geneve_lookup(gn, sk->inet_sport, addr, vni);
geneve = geneve_lookup(gs, addr, vni);
if (!geneve)
goto drop;
@ -410,6 +404,7 @@ static struct geneve_sock *geneve_socket_create(struct net *net, __be16 port,
struct geneve_sock *gs;
struct socket *sock;
struct udp_tunnel_sock_cfg tunnel_cfg;
int h;
gs = kzalloc(sizeof(*gs), GFP_KERNEL);
if (!gs)
@ -423,7 +418,8 @@ static struct geneve_sock *geneve_socket_create(struct net *net, __be16 port,
gs->sock = sock;
gs->refcnt = 1;
gs->gn = gn;
for (h = 0; h < VNI_HASH_SIZE; ++h)
INIT_HLIST_HEAD(&gs->vni_list[h]);
/* Initialize the geneve udp offloads structure */
gs->udp_offloads.port = port;
@ -437,7 +433,6 @@ static struct geneve_sock *geneve_socket_create(struct net *net, __be16 port,
tunnel_cfg.encap_rcv = geneve_udp_encap_recv;
tunnel_cfg.encap_destroy = NULL;
setup_udp_tunnel_sock(net, sock, &tunnel_cfg);
list_add(&gs->list, &gn->sock_list);
return gs;
}
@ -482,6 +477,7 @@ static int geneve_open(struct net_device *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);
if (gs) {
@ -496,14 +492,20 @@ static int geneve_open(struct net_device *dev)
out:
gs->collect_md = geneve->collect_md;
geneve->sock = gs;
hash = geneve_net_vni_hash(geneve->vni);
hlist_add_head_rcu(&geneve->hlist, &gs->vni_list[hash]);
return 0;
}
static int geneve_stop(struct net_device *dev)
{
struct geneve_dev *geneve = netdev_priv(dev);
struct geneve_sock *gs = geneve->sock;
geneve_sock_release(geneve->sock);
if (!hlist_unhashed(&geneve->hlist))
hlist_del_rcu(&geneve->hlist);
geneve_sock_release(gs);
return 0;
}
@ -808,7 +810,6 @@ static int geneve_configure(struct net *net, struct net_device *dev,
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;
__u32 hash;
int err;
if (metadata) {
@ -850,8 +851,6 @@ static int geneve_configure(struct net *net, struct net_device *dev,
return err;
list_add(&geneve->next, &gn->geneve_list);
hash = geneve_net_vni_hash(geneve->vni);
hlist_add_head_rcu(&geneve->hlist, &gn->vni_list[hash]);
return 0;
}
@ -890,9 +889,6 @@ static void geneve_dellink(struct net_device *dev, struct list_head *head)
{
struct geneve_dev *geneve = netdev_priv(dev);
if (!hlist_unhashed(&geneve->hlist))
hlist_del_rcu(&geneve->hlist);
list_del(&geneve->next);
unregister_netdevice_queue(dev, head);
}
@ -977,14 +973,9 @@ EXPORT_SYMBOL_GPL(geneve_dev_create_fb);
static __net_init int geneve_init_net(struct net *net)
{
struct geneve_net *gn = net_generic(net, geneve_net_id);
unsigned int h;
INIT_LIST_HEAD(&gn->geneve_list);
INIT_LIST_HEAD(&gn->sock_list);
for (h = 0; h < VNI_HASH_SIZE; ++h)
INIT_HLIST_HEAD(&gn->vni_list[h]);
return 0;
}