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ip-tunnel: Use API to access tunnel metadata options.

Browse source 
Currently tun-info options pointer is used in few cases to
pass options around. But tunnel options can be accessed using
ip_tunnel_info_opts() API without using the pointer. Following
patch removes the redundant pointer and consistently make use
of API.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Reviewed-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pravin B Shelar 2015-08-30 18:09:38 -07:00 • committed by David S. Miller
parent d1bfc62591
commit 4c22279848
16 changed files with 100 additions and 112 deletions
Download patch file Download diff file Expand all files Collapse all files

8
net/openvswitch/actions.c
View file

@ -793,11 +793,13 @@ static int output_userspace(struct datapath *dp, struct sk_buff *skb,
if (vport) {
int err;
upcall.egress_tun_info = &info;
err = ovs_vport_get_egress_tun_info(vport, skb,
&info);
if (!err)
upcall.egress_tun_info = &info;
&upcall);
if (err)
upcall.egress_tun_info = NULL;
}
break;
}

3
net/openvswitch/datapath.c
View file

@ -491,7 +491,8 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
if (upcall_info->egress_tun_info) {
nla = nla_nest_start(user_skb, OVS_PACKET_ATTR_EGRESS_TUN_KEY);
err = ovs_nla_put_egress_tunnel_key(user_skb,
upcall_info->egress_tun_info);
upcall_info->egress_tun_info,
upcall_info->egress_tun_opts);
BUG_ON(err);
nla_nest_end(user_skb, nla);
}

3
net/openvswitch/datapath.h
View file

@ -116,7 +116,8 @@ struct ovs_skb_cb {
* @mru: If not zero, Maximum received IP fragment size.
*/
struct dp_upcall_info {
const struct ip_tunnel_info *egress_tun_info;
struct ip_tunnel_info *egress_tun_info;
const void *egress_tun_opts;
const struct nlattr *userdata;
const struct nlattr *actions;
int actions_len;

7
net/openvswitch/flow.c
View file

@ -702,12 +702,13 @@ int ovs_flow_key_extract(const struct ip_tunnel_info *tun_info,
return -EINVAL;
memcpy(&key->tun_key, &tun_info->key, sizeof(key->tun_key));
if (tun_info->options) {
if (tun_info->options_len) {
BUILD_BUG_ON((1 << (sizeof(tun_info->options_len) *
8)) - 1
> sizeof(key->tun_opts));
memcpy(TUN_METADATA_OPTS(key, tun_info->options_len),
tun_info->options, tun_info->options_len);
ip_tunnel_info_opts_get(TUN_METADATA_OPTS(key, tun_info->options_len),
tun_info);
key->tun_opts_len = tun_info->options_len;
} else {
key->tun_opts_len = 0;

27
net/openvswitch/flow_netlink.c
View file

@ -716,10 +716,11 @@ static int ipv4_tun_to_nlattr(struct sk_buff *skb,
}
int ovs_nla_put_egress_tunnel_key(struct sk_buff *skb,
const struct ip_tunnel_info *egress_tun_info)
const struct ip_tunnel_info *egress_tun_info,
const void *egress_tun_opts)
{
return __ipv4_tun_to_nlattr(skb, &egress_tun_info->key,
egress_tun_info->options,
egress_tun_opts,
egress_tun_info->options_len);
}
@ -1876,20 +1877,14 @@ static int validate_and_copy_set_tun(const struct nlattr *attr,
tun_info = &tun_dst->u.tun_info;
tun_info->mode = IP_TUNNEL_INFO_TX;
tun_info->key = key.tun_key;
tun_info->options_len = key.tun_opts_len;
if (tun_info->options_len) {
/* We need to store the options in the action itself since
* everything else will go away after flow setup. We can append
* it to tun_info and then point there.
*/
memcpy((tun_info + 1),
TUN_METADATA_OPTS(&key, key.tun_opts_len), key.tun_opts_len);
tun_info->options = (tun_info + 1);
} else {
tun_info->options = NULL;
}
/* We need to store the options in the action itself since
* everything else will go away after flow setup. We can append
* it to tun_info and then point there.
*/
ip_tunnel_info_opts_set(tun_info,
TUN_METADATA_OPTS(&key, key.tun_opts_len),
key.tun_opts_len);
add_nested_action_end(*sfa, start);
return err;
@ -2345,7 +2340,7 @@ static int set_action_to_attr(const struct nlattr *a, struct sk_buff *skb)
err = ipv4_tun_to_nlattr(skb, &tun_info->key,
tun_info->options_len ?
tun_info->options : NULL,
ip_tunnel_info_opts(tun_info) : NULL,
tun_info->options_len);
if (err)
return err;

3
net/openvswitch/flow_netlink.h
View file

@ -56,7 +56,8 @@ int ovs_nla_get_match(struct net *, struct sw_flow_match *,
const struct nlattr *key, const struct nlattr *mask,
bool log);
int ovs_nla_put_egress_tunnel_key(struct sk_buff *,
const struct ip_tunnel_info *);
const struct ip_tunnel_info *,
const void *egress_tun_opts);
bool ovs_nla_get_ufid(struct sw_flow_id *, const struct nlattr *, bool log);
int ovs_nla_get_identifier(struct sw_flow_id *sfid, const struct nlattr *ufid,

5
net/openvswitch/vport-geneve.c
View file

@ -53,15 +53,14 @@ static int geneve_get_options(const struct vport *vport,
}
static int geneve_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
struct ip_tunnel_info *egress_tun_info)
struct dp_upcall_info *upcall)
{
struct geneve_port *geneve_port = geneve_vport(vport);
struct net *net = ovs_dp_get_net(vport->dp);
__be16 dport = htons(geneve_port->port_no);
__be16 sport = udp_flow_src_port(net, skb, 1, USHRT_MAX, true);
return ovs_tunnel_get_egress_info(egress_tun_info,
ovs_dp_get_net(vport->dp),
return ovs_tunnel_get_egress_info(upcall, ovs_dp_get_net(vport->dp),
skb, IPPROTO_UDP, sport, dport);
}

5
net/openvswitch/vport-gre.c
View file

@ -85,10 +85,9 @@ static struct vport *gre_create(const struct vport_parms *parms)
}
static int gre_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
struct ip_tunnel_info *egress_tun_info)
struct dp_upcall_info *upcall)
{
return ovs_tunnel_get_egress_info(egress_tun_info,
ovs_dp_get_net(vport->dp),
return ovs_tunnel_get_egress_info(upcall, ovs_dp_get_net(vport->dp),
skb, IPPROTO_GRE, 0, 0);
}

4
net/openvswitch/vport-vxlan.c
View file

@ -147,7 +147,7 @@ static struct vport *vxlan_create(const struct vport_parms *parms)
}
static int vxlan_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
struct ip_tunnel_info *egress_tun_info)
struct dp_upcall_info *upcall)
{
struct vxlan_dev *vxlan = netdev_priv(vport->dev);
struct net *net = ovs_dp_get_net(vport->dp);
@ -159,7 +159,7 @@ static int vxlan_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
inet_get_local_port_range(net, &port_min, &port_max);
src_port = udp_flow_src_port(net, skb, 0, 0, true);
return ovs_tunnel_get_egress_info(egress_tun_info, net,
return ovs_tunnel_get_egress_info(upcall, net,
skb, IPPROTO_UDP,
src_port, dst_port);
}

27
net/openvswitch/vport.c
View file

@ -487,13 +487,14 @@ void ovs_vport_deferred_free(struct vport *vport)
}
EXPORT_SYMBOL_GPL(ovs_vport_deferred_free);
int ovs_tunnel_get_egress_info(struct ip_tunnel_info *egress_tun_info,
int ovs_tunnel_get_egress_info(struct dp_upcall_info *upcall,
struct net *net,
struct sk_buff *skb,
u8 ipproto,
__be16 tp_src,
__be16 tp_dst)
{
struct ip_tunnel_info *egress_tun_info = upcall->egress_tun_info;
const struct ip_tunnel_info *tun_info = skb_tunnel_info(skb);
const struct ip_tunnel_key *tun_key;
u32 skb_mark = skb->mark;
@ -520,26 +521,26 @@ int ovs_tunnel_get_egress_info(struct ip_tunnel_info *egress_tun_info,
/* Generate egress_tun_info based on tun_info,
* saddr, tp_src and tp_dst
*/
__ip_tunnel_info_init(egress_tun_info,
fl.saddr, tun_key->u.ipv4.dst,
tun_key->tos,
tun_key->ttl,
tp_src, tp_dst,
tun_key->tun_id,
tun_key->tun_flags,
tun_info->options,
tun_info->options_len);
ip_tunnel_key_init(&egress_tun_info->key,
fl.saddr, tun_key->u.ipv4.dst,
tun_key->tos,
tun_key->ttl,
tp_src, tp_dst,
tun_key->tun_id,
tun_key->tun_flags);
egress_tun_info->options_len = tun_info->options_len;
egress_tun_info->mode = tun_info->mode;
upcall->egress_tun_opts = ip_tunnel_info_opts(egress_tun_info);
return 0;
}
EXPORT_SYMBOL_GPL(ovs_tunnel_get_egress_info);
int ovs_vport_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
struct ip_tunnel_info *info)
struct dp_upcall_info *upcall)
{
/* get_egress_tun_info() is only implemented on tunnel ports. */
if (unlikely(!vport->ops->get_egress_tun_info))
return -EINVAL;
return vport->ops->get_egress_tun_info(vport, skb, info);
return vport->ops->get_egress_tun_info(vport, skb, upcall);
}

7
net/openvswitch/vport.h
View file

@ -53,14 +53,15 @@ int ovs_vport_set_upcall_portids(struct vport *, const struct nlattr *pids);
int ovs_vport_get_upcall_portids(const struct vport *, struct sk_buff *);
u32 ovs_vport_find_upcall_portid(const struct vport *, struct sk_buff *);
int ovs_tunnel_get_egress_info(struct ip_tunnel_info *egress_tun_info,
int ovs_tunnel_get_egress_info(struct dp_upcall_info *upcall,
struct net *net,
struct sk_buff *,
u8 ipproto,
__be16 tp_src,
__be16 tp_dst);
int ovs_vport_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
struct ip_tunnel_info *info);
struct dp_upcall_info *upcall);
/**
* struct vport_portids - array of netlink portids of a vport.
@ -154,7 +155,7 @@ struct vport_ops {
void (*send)(struct vport *, struct sk_buff *);
int (*get_egress_tun_info)(struct vport *, struct sk_buff *,
struct ip_tunnel_info *);
struct dp_upcall_info *upcall);
struct module *owner;
struct list_head list;