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authorPatrick McHardy <kaber@trash.net>2013-04-19 02:04:31 +0000
committerDavid S. Miller <davem@davemloft.net>2013-04-19 14:46:06 -0400
commit8ad227ff89a7e6f05d07cd0acfd95ed3a24450ca (patch)
tree90cb532df2523a011e47844434cc423664441d71 /net/8021q
parent86a9bad3ab6b6f858fd4443b48738cabbb6d094c (diff)
downloadlinux-8ad227ff89a7e6f05d07cd0acfd95ed3a24450ca.tar.bz2
net: vlan: add 802.1ad support
Add support for 802.1ad VLAN devices. This mainly consists of checking for ETH_P_8021AD in addition to ETH_P_8021Q in a couple of places and check offloading capabilities based on the used protocol. Configuration is done using "ip link": # ip link add link eth0 eth0.1000 \ type vlan proto 802.1ad id 1000 # ip link add link eth0.1000 eth0.1000.1000 \ type vlan proto 802.1q id 1000 52:54:00:12:34:56 > 92:b1:54:28:e4:8c, ethertype 802.1Q (0x8100), length 106: vlan 1000, p 0, ethertype 802.1Q, vlan 1000, p 0, ethertype IPv4, (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto ICMP (1), length 84) 20.1.0.2 > 20.1.0.1: ICMP echo request, id 3003, seq 8, length 64 92:b1:54:28:e4:8c > 52:54:00:12:34:56, ethertype 802.1Q-QinQ (0x88a8), length 106: vlan 1000, p 0, ethertype 802.1Q, vlan 1000, p 0, ethertype IPv4, (tos 0x0, ttl 64, id 47944, offset 0, flags [none], proto ICMP (1), length 84) 20.1.0.1 > 20.1.0.2: ICMP echo reply, id 3003, seq 8, length 64 Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q')
-rw-r--r--net/8021q/Kconfig2
-rw-r--r--net/8021q/vlan.h3
-rw-r--r--net/8021q/vlan_core.c18
-rw-r--r--net/8021q/vlan_netlink.c25
4 files changed, 40 insertions, 8 deletions
diff --git a/net/8021q/Kconfig b/net/8021q/Kconfig
index 8f7517df41a5..b85a91fa61f1 100644
--- a/net/8021q/Kconfig
+++ b/net/8021q/Kconfig
@@ -3,7 +3,7 @@
#
config VLAN_8021Q
- tristate "802.1Q VLAN Support"
+ tristate "802.1Q/802.1ad VLAN Support"
---help---
Select this and you will be able to create 802.1Q VLAN interfaces
on your ethernet interfaces. 802.1Q VLAN supports almost
diff --git a/net/8021q/vlan.h b/net/8021q/vlan.h
index 245de9653db0..abc9cb631c47 100644
--- a/net/8021q/vlan.h
+++ b/net/8021q/vlan.h
@@ -91,6 +91,7 @@ static inline struct vlan_dev_priv *vlan_dev_priv(const struct net_device *dev)
enum vlan_protos {
VLAN_PROTO_8021Q = 0,
+ VLAN_PROTO_8021AD,
VLAN_PROTO_NUM,
};
@@ -116,6 +117,8 @@ static inline unsigned int vlan_proto_idx(__be16 proto)
switch (proto) {
case __constant_htons(ETH_P_8021Q):
return VLAN_PROTO_8021Q;
+ case __constant_htons(ETH_P_8021AD):
+ return VLAN_PROTO_8021AD;
default:
BUG();
}
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index bdb0b9d2e9cf..ebfa2fceb88b 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -194,6 +194,18 @@ struct vlan_vid_info {
int refcount;
};
+static bool vlan_hw_filter_capable(const struct net_device *dev,
+ const struct vlan_vid_info *vid_info)
+{
+ if (vid_info->proto == htons(ETH_P_8021Q) &&
+ dev->features & NETIF_F_HW_VLAN_CTAG_FILTER)
+ return true;
+ if (vid_info->proto == htons(ETH_P_8021AD) &&
+ dev->features & NETIF_F_HW_VLAN_STAG_FILTER)
+ return true;
+ return false;
+}
+
static struct vlan_vid_info *vlan_vid_info_get(struct vlan_info *vlan_info,
__be16 proto, u16 vid)
{
@@ -231,8 +243,7 @@ static int __vlan_vid_add(struct vlan_info *vlan_info, __be16 proto, u16 vid,
if (!vid_info)
return -ENOMEM;
- if (proto == htons(ETH_P_8021Q) &&
- dev->features & NETIF_F_HW_VLAN_CTAG_FILTER) {
+ if (vlan_hw_filter_capable(dev, vid_info)) {
err = ops->ndo_vlan_rx_add_vid(dev, proto, vid);
if (err) {
kfree(vid_info);
@@ -290,8 +301,7 @@ static void __vlan_vid_del(struct vlan_info *vlan_info,
u16 vid = vid_info->vid;
int err;
- if (proto == htons(ETH_P_8021Q) &&
- dev->features & NETIF_F_HW_VLAN_CTAG_FILTER) {
+ if (vlan_hw_filter_capable(dev, vid_info)) {
err = ops->ndo_vlan_rx_kill_vid(dev, proto, vid);
if (err) {
pr_warn("failed to kill vid %04x/%d for device %s\n",
diff --git a/net/8021q/vlan_netlink.c b/net/8021q/vlan_netlink.c
index a1a956ab39a5..309129732285 100644
--- a/net/8021q/vlan_netlink.c
+++ b/net/8021q/vlan_netlink.c
@@ -23,6 +23,7 @@ static const struct nla_policy vlan_policy[IFLA_VLAN_MAX + 1] = {
[IFLA_VLAN_FLAGS] = { .len = sizeof(struct ifla_vlan_flags) },
[IFLA_VLAN_EGRESS_QOS] = { .type = NLA_NESTED },
[IFLA_VLAN_INGRESS_QOS] = { .type = NLA_NESTED },
+ [IFLA_VLAN_PROTOCOL] = { .type = NLA_U16 },
};
static const struct nla_policy vlan_map_policy[IFLA_VLAN_QOS_MAX + 1] = {
@@ -53,6 +54,16 @@ static int vlan_validate(struct nlattr *tb[], struct nlattr *data[])
if (!data)
return -EINVAL;
+ if (data[IFLA_VLAN_PROTOCOL]) {
+ switch (nla_get_be16(data[IFLA_VLAN_PROTOCOL])) {
+ case __constant_htons(ETH_P_8021Q):
+ case __constant_htons(ETH_P_8021AD):
+ break;
+ default:
+ return -EPROTONOSUPPORT;
+ }
+ }
+
if (data[IFLA_VLAN_ID]) {
id = nla_get_u16(data[IFLA_VLAN_ID]);
if (id >= VLAN_VID_MASK)
@@ -107,6 +118,7 @@ static int vlan_newlink(struct net *src_net, struct net_device *dev,
{
struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
struct net_device *real_dev;
+ __be16 proto;
int err;
if (!data[IFLA_VLAN_ID])
@@ -118,7 +130,12 @@ static int vlan_newlink(struct net *src_net, struct net_device *dev,
if (!real_dev)
return -ENODEV;
- vlan->vlan_proto = htons(ETH_P_8021Q);
+ if (data[IFLA_VLAN_PROTOCOL])
+ proto = nla_get_be16(data[IFLA_VLAN_PROTOCOL]);
+ else
+ proto = htons(ETH_P_8021Q);
+
+ vlan->vlan_proto = proto;
vlan->vlan_id = nla_get_u16(data[IFLA_VLAN_ID]);
vlan->real_dev = real_dev;
vlan->flags = VLAN_FLAG_REORDER_HDR;
@@ -152,7 +169,8 @@ static size_t vlan_get_size(const struct net_device *dev)
{
struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
- return nla_total_size(2) + /* IFLA_VLAN_ID */
+ return nla_total_size(2) + /* IFLA_VLAN_PROTOCOL */
+ nla_total_size(2) + /* IFLA_VLAN_ID */
sizeof(struct ifla_vlan_flags) + /* IFLA_VLAN_FLAGS */
vlan_qos_map_size(vlan->nr_ingress_mappings) +
vlan_qos_map_size(vlan->nr_egress_mappings);
@@ -167,7 +185,8 @@ static int vlan_fill_info(struct sk_buff *skb, const struct net_device *dev)
struct nlattr *nest;
unsigned int i;
- if (nla_put_u16(skb, IFLA_VLAN_ID, vlan_dev_priv(dev)->vlan_id))
+ if (nla_put_be16(skb, IFLA_VLAN_PROTOCOL, vlan->vlan_proto) ||
+ nla_put_u16(skb, IFLA_VLAN_ID, vlan->vlan_id))
goto nla_put_failure;
if (vlan->flags) {
f.flags = vlan->flags;