IB/core: Add VLAN support for IBoE

[pandora-kernel.git] / include / rdma / ib_addr.h

diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h
index 904ffa9..b5fc9f3 100644 (file)
--- a/include/rdma/ib_addr.h
+++ b/include/rdma/ib_addr.h
@@ -39,6 +39,7 @@
 #include <linux/if_arp.h>
 #include <linux/netdevice.h>
 #include <linux/socket.h>
+#include <linux/if_vlan.h>
 #include <rdma/ib_verbs.h>
 #include <rdma/ib_pack.h>
 
@@ -129,21 +130,41 @@ static inline int rdma_addr_gid_offset(struct rdma_dev_addr *dev_addr)
        return dev_addr->dev_type == ARPHRD_INFINIBAND ? 4 : 0;
 }
 
-static inline void iboe_mac_to_ll(union ib_gid *gid, u8 *mac)
+static inline void iboe_mac_vlan_to_ll(union ib_gid *gid, u8 *mac, u16 vid)
 {
        memset(gid->raw, 0, 16);
        *((__be32 *) gid->raw) = cpu_to_be32(0xfe800000);
-       gid->raw[12] = 0xfe;
-       gid->raw[11] = 0xff;
+       if (vid < 0x1000) {
+               gid->raw[12] = vid & 0xff;
+               gid->raw[11] = vid >> 8;
+       } else {
+               gid->raw[12] = 0xfe;
+               gid->raw[11] = 0xff;
+       }
        memcpy(gid->raw + 13, mac + 3, 3);
        memcpy(gid->raw + 8, mac, 3);
        gid->raw[8] ^= 2;
 }
 
+static inline u16 rdma_vlan_dev_vlan_id(const struct net_device *dev)
+{
+       return dev->priv_flags & IFF_802_1Q_VLAN ?
+               vlan_dev_vlan_id(dev) : 0xffff;
+}
+
 static inline void iboe_addr_get_sgid(struct rdma_dev_addr *dev_addr,
                                      union ib_gid *gid)
 {
-       iboe_mac_to_ll(gid, dev_addr->src_dev_addr);
+       struct net_device *dev;
+       u16 vid = 0xffff;
+
+       dev = dev_get_by_index(&init_net, dev_addr->bound_dev_if);
+       if (dev) {
+               vid = rdma_vlan_dev_vlan_id(dev);
+               dev_put(dev);
+       }
+
+       iboe_mac_vlan_to_ll(gid, dev_addr->src_dev_addr, vid);
 }
 
 static inline void rdma_addr_get_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
@@ -244,4 +265,18 @@ static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac)
                mac[i] = addr->s6_addr[i + 10];
 }
 
+static inline u16 rdma_get_vlan_id(union ib_gid *dgid)
+{
+       u16 vid;
+
+       vid = dgid->raw[11] << 8 | dgid->raw[12];
+       return vid < 0x1000 ? vid : 0xffff;
+}
+
+static inline struct net_device *rdma_vlan_dev_real_dev(const struct net_device *dev)
+{
+       return dev->priv_flags & IFF_802_1Q_VLAN ?
+               vlan_dev_real_dev(dev) : 0;
+}
+
 #endif /* IB_ADDR_H */