Commit 23898c76 authored by Noa Osherovich's avatar Noa Osherovich Committed by David S. Miller
Browse files

net/mlx5: E-Switch, Modify node guid on vf set MAC

In RoCE, the RDMA-CM needs the node guid to establish connection
between nodes.
Today, the node guid exposed to mlx5 Ethernet VFs is zero, therefore
RDMA-CM on the VF is broken.

Whenever the administrator sets a MAC for a VF, derive the node guid
from it and set it as well in the following way:
MAC: e4:1d:2d:b3:f4:01 -> node_guid: e4:1d:2d:ff:fe:b3:f4:01

Fixes: 77256579

 ('net/mlx5: E-Switch, Introduce Vport...')
Signed-off-by: default avatarNoa Osherovich <>
Signed-off-by: default avatarMajd Dibbiny <>
Signed-off-by: default avatarSaeed Mahameed <>
Signed-off-by: default avatarDavid S. Miller <>
parent 25fff58c
......@@ -1725,11 +1725,24 @@ void mlx5_eswitch_vport_event(struct mlx5_eswitch *esw, struct mlx5_eqe *eqe)
(esw && MLX5_CAP_GEN(esw->dev, vport_group_manager) && mlx5_core_is_pf(esw->dev))
#define LEGAL_VPORT(esw, vport) (vport >= 0 && vport < esw->total_vports)
static void node_guid_gen_from_mac(u64 *node_guid, u8 mac[ETH_ALEN])
((u8 *)node_guid)[7] = mac[0];
((u8 *)node_guid)[6] = mac[1];
((u8 *)node_guid)[5] = mac[2];
((u8 *)node_guid)[4] = 0xff;
((u8 *)node_guid)[3] = 0xfe;
((u8 *)node_guid)[2] = mac[3];
((u8 *)node_guid)[1] = mac[4];
((u8 *)node_guid)[0] = mac[5];
int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
int vport, u8 mac[ETH_ALEN])
int err = 0;
struct mlx5_vport *evport;
u64 node_guid;
int err = 0;
if (!ESW_ALLOWED(esw))
return -EPERM;
......@@ -1753,11 +1766,17 @@ int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
return err;
node_guid_gen_from_mac(&node_guid, mac);
err = mlx5_modify_nic_vport_node_guid(esw->dev, vport, node_guid);
if (err)
"Failed to set vport %d node guid, err = %d. RDMA_CM will not function properly for this VF.\n",
vport, err);
if (evport->enabled)
err = esw_vport_ingress_config(esw, evport);
return err;
......@@ -508,6 +508,44 @@ int mlx5_query_nic_vport_node_guid(struct mlx5_core_dev *mdev, u64 *node_guid)
int mlx5_modify_nic_vport_node_guid(struct mlx5_core_dev *mdev,
u32 vport, u64 node_guid)
int inlen = MLX5_ST_SZ_BYTES(modify_nic_vport_context_in);
void *nic_vport_context;
u8 *guid;
void *in;
int err;
if (!vport)
return -EINVAL;
if (!MLX5_CAP_GEN(mdev, vport_group_manager))
return -EACCES;
if (!MLX5_CAP_ESW(mdev, nic_vport_node_guid_modify))
return -ENOTSUPP;
in = mlx5_vzalloc(inlen);
if (!in)
return -ENOMEM;
MLX5_SET(modify_nic_vport_context_in, in,
field_select.node_guid, 1);
MLX5_SET(modify_nic_vport_context_in, in, vport_number, vport);
MLX5_SET(modify_nic_vport_context_in, in, other_vport, !!vport);
nic_vport_context = MLX5_ADDR_OF(modify_nic_vport_context_in,
in, nic_vport_context);
guid = MLX5_ADDR_OF(nic_vport_context, nic_vport_context,
MLX5_SET64(nic_vport_context, nic_vport_context, node_guid, node_guid);
err = mlx5_modify_nic_vport_context(mdev, in, inlen);
return err;
int mlx5_query_nic_vport_qkey_viol_cntr(struct mlx5_core_dev *mdev,
u16 *qkey_viol_cntr)
......@@ -501,7 +501,9 @@ struct mlx5_ifc_e_switch_cap_bits {
u8 vport_svlan_insert[0x1];
u8 vport_cvlan_insert_if_not_exist[0x1];
u8 vport_cvlan_insert_overwrite[0x1];
u8 reserved_at_5[0x1b];
u8 reserved_at_5[0x19];
u8 nic_vport_node_guid_modify[0x1];
u8 nic_vport_port_guid_modify[0x1];
u8 reserved_at_20[0x7e0];
......@@ -4584,7 +4586,10 @@ struct mlx5_ifc_modify_nic_vport_context_out_bits {
struct mlx5_ifc_modify_nic_vport_field_select_bits {
u8 reserved_at_0[0x19];
u8 reserved_at_0[0x16];
u8 node_guid[0x1];
u8 port_guid[0x1];
u8 reserved_at_18[0x1];
u8 mtu[0x1];
u8 change_event[0x1];
u8 promisc[0x1];
......@@ -50,6 +50,8 @@ int mlx5_modify_nic_vport_mtu(struct mlx5_core_dev *mdev, u16 mtu);
int mlx5_query_nic_vport_system_image_guid(struct mlx5_core_dev *mdev,
u64 *system_image_guid);
int mlx5_query_nic_vport_node_guid(struct mlx5_core_dev *mdev, u64 *node_guid);
int mlx5_modify_nic_vport_node_guid(struct mlx5_core_dev *mdev,
u32 vport, u64 node_guid);
int mlx5_query_nic_vport_qkey_viol_cntr(struct mlx5_core_dev *mdev,
u16 *qkey_viol_cntr);
int mlx5_query_hca_vport_gid(struct mlx5_core_dev *dev, u8 other_vport,
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