1 files changed, 98 insertions, 1 deletions

diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h
index fa0d52b8e622..904ffa92fc93 100644
--- a/include/rdma/ib_addr.h
+++ b/include/rdma/ib_addr.h
@@ -40,6 +40,7 @@
 #include <linux/netdevice.h>
 #include <linux/socket.h>
 #include <rdma/ib_verbs.h>
+#include <rdma/ib_pack.h>
 
 struct rdma_addr_client {
         atomic_t refcount;
@@ -63,6 +64,7 @@ struct rdma_dev_addr {
         unsigned char broadcast[MAX_ADDR_LEN];
         unsigned short dev_type;
         int bound_dev_if;
+        enum rdma_transport_type transport;
 };
 
 /**
@@ -127,9 +129,31 @@ 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)
+{
+        memset(gid->raw, 0, 16);
+        *((__be32 *) gid->raw) = cpu_to_be32(0xfe800000);
+        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 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);
+}
+
 static inline void rdma_addr_get_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
 {
-        memcpy(gid, dev_addr->src_dev_addr + rdma_addr_gid_offset(dev_addr), sizeof *gid);
+        if (dev_addr->transport == RDMA_TRANSPORT_IB &&
+            dev_addr->dev_type != ARPHRD_INFINIBAND)
+                iboe_addr_get_sgid(dev_addr, gid);
+        else
+                memcpy(gid, dev_addr->src_dev_addr +
+                       rdma_addr_gid_offset(dev_addr), sizeof *gid);
 }
 
 static inline void rdma_addr_set_sgid(struct rdma_dev_addr *dev_addr, union ib_gid *gid)
@@ -147,4 +171,77 @@ static inline void rdma_addr_set_dgid(struct rdma_dev_addr *dev_addr, union ib_g
         memcpy(dev_addr->dst_dev_addr + rdma_addr_gid_offset(dev_addr), gid, sizeof *gid);
 }
 
+static inline enum ib_mtu iboe_get_mtu(int mtu)
+{
+        /*
+         * reduce IB headers from effective IBoE MTU. 28 stands for
+         * atomic header which is the biggest possible header after BTH
+         */
+        mtu = mtu - IB_GRH_BYTES - IB_BTH_BYTES - 28;
+
+        if (mtu >= ib_mtu_enum_to_int(IB_MTU_4096))
+                return IB_MTU_4096;
+        else if (mtu >= ib_mtu_enum_to_int(IB_MTU_2048))
+                return IB_MTU_2048;
+        else if (mtu >= ib_mtu_enum_to_int(IB_MTU_1024))
+                return IB_MTU_1024;
+        else if (mtu >= ib_mtu_enum_to_int(IB_MTU_512))
+                return IB_MTU_512;
+        else if (mtu >= ib_mtu_enum_to_int(IB_MTU_256))
+                return IB_MTU_256;
+        else
+                return 0;
+}
+
+static inline int iboe_get_rate(struct net_device *dev)
+{
+        struct ethtool_cmd cmd;
+
+        if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings ||
+            dev->ethtool_ops->get_settings(dev, &cmd))
+                return IB_RATE_PORT_CURRENT;
+
+        if (cmd.speed >= 40000)
+                return IB_RATE_40_GBPS;
+        else if (cmd.speed >= 30000)
+                return IB_RATE_30_GBPS;
+        else if (cmd.speed >= 20000)
+                return IB_RATE_20_GBPS;
+        else if (cmd.speed >= 10000)
+                return IB_RATE_10_GBPS;
+        else
+                return IB_RATE_PORT_CURRENT;
+}
+
+static inline int rdma_link_local_addr(struct in6_addr *addr)
+{
+        if (addr->s6_addr32[0] == htonl(0xfe800000) &&
+            addr->s6_addr32[1] == 0)
+                return 1;
+
+        return 0;
+}
+
+static inline void rdma_get_ll_mac(struct in6_addr *addr, u8 *mac)
+{
+        memcpy(mac, &addr->s6_addr[8], 3);
+        memcpy(mac + 3, &addr->s6_addr[13], 3);
+        mac[0] ^= 2;
+}
+
+static inline int rdma_is_multicast_addr(struct in6_addr *addr)
+{
+        return addr->s6_addr[0] == 0xff;
+}
+
+static inline void rdma_get_mcast_mac(struct in6_addr *addr, u8 *mac)
+{
+        int i;
+
+        mac[0] = 0x33;
+        mac[1] = 0x33;
+        for (i = 2; i < 6; ++i)
+                mac[i] = addr->s6_addr[i + 10];
+}
+
 #endif /* IB_ADDR_H */