diff options
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_addr.h | 99 |
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 */ |