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-rw-r--r--include/rdma/ib_addr.h134
-rw-r--r--include/rdma/ib_pack.h39
-rw-r--r--include/rdma/ib_user_verbs.h3
-rw-r--r--include/rdma/ib_verbs.h11
4 files changed, 177 insertions, 10 deletions
diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h
index fa0d52b8e622..b5fc9f39122b 100644
--- a/include/rdma/ib_addr.h
+++ b/include/rdma/ib_addr.h
@@ -39,7 +39,9 @@
#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>
struct rdma_addr_client {
atomic_t refcount;
@@ -63,6 +65,7 @@ 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 +130,51 @@ 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_vlan_to_ll(union ib_gid *gid, u8 *mac, u16 vid)
+{
+ memset(gid->raw, 0, 16);
+ *((__be32 *) gid->raw) = cpu_to_be32(0xfe800000);
+ 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)
+{
+ 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)
{
- 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 +192,91 @@ 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];
+}
+
+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 */
diff --git a/include/rdma/ib_pack.h b/include/rdma/ib_pack.h
index cbb50f4da3dd..b37fe3b10a9d 100644
--- a/include/rdma/ib_pack.h
+++ b/include/rdma/ib_pack.h
@@ -37,6 +37,8 @@
enum {
IB_LRH_BYTES = 8,
+ IB_ETH_BYTES = 14,
+ IB_VLAN_BYTES = 4,
IB_GRH_BYTES = 40,
IB_BTH_BYTES = 12,
IB_DETH_BYTES = 8
@@ -210,14 +212,32 @@ struct ib_unpacked_deth {
__be32 source_qpn;
};
+struct ib_unpacked_eth {
+ u8 dmac_h[4];
+ u8 dmac_l[2];
+ u8 smac_h[2];
+ u8 smac_l[4];
+ __be16 type;
+};
+
+struct ib_unpacked_vlan {
+ __be16 tag;
+ __be16 type;
+};
+
struct ib_ud_header {
+ int lrh_present;
struct ib_unpacked_lrh lrh;
- int grh_present;
- struct ib_unpacked_grh grh;
- struct ib_unpacked_bth bth;
+ int eth_present;
+ struct ib_unpacked_eth eth;
+ int vlan_present;
+ struct ib_unpacked_vlan vlan;
+ int grh_present;
+ struct ib_unpacked_grh grh;
+ struct ib_unpacked_bth bth;
struct ib_unpacked_deth deth;
- int immediate_present;
- __be32 immediate_data;
+ int immediate_present;
+ __be32 immediate_data;
};
void ib_pack(const struct ib_field *desc,
@@ -230,9 +250,12 @@ void ib_unpack(const struct ib_field *desc,
void *buf,
void *structure);
-void ib_ud_header_init(int payload_bytes,
- int grh_present,
- int immediate_present,
+void ib_ud_header_init(int payload_bytes,
+ int lrh_present,
+ int eth_present,
+ int vlan_present,
+ int grh_present,
+ int immediate_present,
struct ib_ud_header *header);
int ib_ud_header_pack(struct ib_ud_header *header,
diff --git a/include/rdma/ib_user_verbs.h b/include/rdma/ib_user_verbs.h
index a17f77106149..fe5b05177a2c 100644
--- a/include/rdma/ib_user_verbs.h
+++ b/include/rdma/ib_user_verbs.h
@@ -205,7 +205,8 @@ struct ib_uverbs_query_port_resp {
__u8 active_width;
__u8 active_speed;
__u8 phys_state;
- __u8 reserved[3];
+ __u8 link_layer;
+ __u8 reserved[2];
};
struct ib_uverbs_alloc_pd {
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 857b3b9cf120..e04c4888d1fd 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -75,6 +75,12 @@ enum rdma_transport_type {
enum rdma_transport_type
rdma_node_get_transport(enum rdma_node_type node_type) __attribute_const__;
+enum rdma_link_layer {
+ IB_LINK_LAYER_UNSPECIFIED,
+ IB_LINK_LAYER_INFINIBAND,
+ IB_LINK_LAYER_ETHERNET,
+};
+
enum ib_device_cap_flags {
IB_DEVICE_RESIZE_MAX_WR = 1,
IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
@@ -1010,6 +1016,8 @@ struct ib_device {
int (*query_port)(struct ib_device *device,
u8 port_num,
struct ib_port_attr *port_attr);
+ enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
+ u8 port_num);
int (*query_gid)(struct ib_device *device,
u8 port_num, int index,
union ib_gid *gid);
@@ -1222,6 +1230,9 @@ int ib_query_device(struct ib_device *device,
int ib_query_port(struct ib_device *device,
u8 port_num, struct ib_port_attr *port_attr);
+enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
+ u8 port_num);
+
int ib_query_gid(struct ib_device *device,
u8 port_num, int index, union ib_gid *gid);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.