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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 /include
parent86a9bad3ab6b6f858fd4443b48738cabbb6d094c (diff)
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 'include')
-rw-r--r--include/linux/if_vlan.h6
-rw-r--r--include/linux/netdev_features.h6
-rw-r--r--include/uapi/linux/if_link.h1
3 files changed, 11 insertions, 2 deletions
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 8086ff9988b1..a78f9390da87 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -162,6 +162,8 @@ static inline bool vlan_hw_offload_capable(netdev_features_t features,
{
if (proto == htons(ETH_P_8021Q) && features & NETIF_F_HW_VLAN_CTAG_TX)
return true;
+ if (proto == htons(ETH_P_8021AD) && features & NETIF_F_HW_VLAN_STAG_TX)
+ return true;
return false;
}
@@ -271,9 +273,9 @@ static inline int __vlan_get_tag(const struct sk_buff *skb, u16 *vlan_tci)
{
struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb->data;
- if (veth->h_vlan_proto != htons(ETH_P_8021Q)) {
+ if (veth->h_vlan_proto != htons(ETH_P_8021Q) &&
+ veth->h_vlan_proto != htons(ETH_P_8021AD))
return -EINVAL;
- }
*vlan_tci = ntohs(veth->h_vlan_TCI);
return 0;
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 785913b8983d..cbaa027ef5a7 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -25,6 +25,9 @@ enum {
NETIF_F_HW_VLAN_CTAG_TX_BIT, /* Transmit VLAN CTAG HW acceleration */
NETIF_F_HW_VLAN_CTAG_RX_BIT, /* Receive VLAN CTAG HW acceleration */
NETIF_F_HW_VLAN_CTAG_FILTER_BIT,/* Receive filtering on VLAN CTAGs */
+ NETIF_F_HW_VLAN_STAG_TX_BIT, /* Transmit VLAN STAG HW acceleration */
+ NETIF_F_HW_VLAN_STAG_RX_BIT, /* Receive VLAN STAG HW acceleration */
+ NETIF_F_HW_VLAN_STAG_FILTER_BIT,/* Receive filtering on VLAN STAGs */
NETIF_F_VLAN_CHALLENGED_BIT, /* Device cannot handle VLAN packets */
NETIF_F_GSO_BIT, /* Enable software GSO. */
NETIF_F_LLTX_BIT, /* LockLess TX - deprecated. Please */
@@ -83,6 +86,9 @@ enum {
#define NETIF_F_HW_VLAN_CTAG_FILTER __NETIF_F(HW_VLAN_CTAG_FILTER)
#define NETIF_F_HW_VLAN_CTAG_RX __NETIF_F(HW_VLAN_CTAG_RX)
#define NETIF_F_HW_VLAN_CTAG_TX __NETIF_F(HW_VLAN_CTAG_TX)
+#define NETIF_F_HW_VLAN_STAG_FILTER __NETIF_F(HW_VLAN_STAG_FILTER)
+#define NETIF_F_HW_VLAN_STAG_RX __NETIF_F(HW_VLAN_STAG_RX)
+#define NETIF_F_HW_VLAN_STAG_TX __NETIF_F(HW_VLAN_STAG_TX)
#define NETIF_F_IP_CSUM __NETIF_F(IP_CSUM)
#define NETIF_F_IPV6_CSUM __NETIF_F(IPV6_CSUM)
#define NETIF_F_LLTX __NETIF_F(LLTX)
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 9922704f08af..e3163544f339 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -250,6 +250,7 @@ enum {
IFLA_VLAN_FLAGS,
IFLA_VLAN_EGRESS_QOS,
IFLA_VLAN_INGRESS_QOS,
+ IFLA_VLAN_PROTOCOL,
__IFLA_VLAN_MAX,
};