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Message-Id: <1440626079-11689-9-git-send-email-pshelar@nicira.com>
Date: Wed, 26 Aug 2015 14:54:39 -0700
From: Pravin B Shelar <pshelar@...ira.com>
To: netdev@...r.kernel.org
Cc: Pravin B Shelar <pshelar@...ira.com>
Subject: [PATCH v4 net-next 8/8] geneve: Move device hash table to geneve socket.
This change simplifies Geneve Tunnel hash table management.
Signed-off-by: Pravin B Shelar <pshelar@...ira.com>
Reviewed-by: Jesse Gross <jesse@...ira.com>
Reviewed-by: John W. Linville <linville@...driver.com>
---
Rebased on updated patches.
---
drivers/net/geneve.c | 43 +++++++++++++++++--------------------------
1 files changed, 17 insertions(+), 26 deletions(-)
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index a36a1de..6bdf30b 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -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;
@@ -99,13 +98,11 @@ 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;
@@ -130,8 +125,6 @@ static void geneve_rx(struct geneve_sock *gs, struct sk_buff *skb)
bool xnet;
int err;
- iph = ip_hdr(skb); /* Still outer IP header... */
-
if (gs->collect_md) {
static u8 zero_vni[3];
@@ -139,10 +132,11 @@ 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;
@@ -413,6 +407,7 @@ 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)
@@ -426,7 +421,8 @@ 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;
@@ -440,7 +436,6 @@ 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;
}
@@ -485,6 +480,7 @@ 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) {
@@ -499,14 +495,20 @@ 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;
}
@@ -811,7 +813,6 @@ 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) {
@@ -853,8 +854,6 @@ 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;
}
@@ -893,9 +892,6 @@ 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);
}
@@ -980,14 +976,9 @@ 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;
}
--
1.7.1
--
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