I have a CentOS 7.6 environment with CX4 Ethernet only card. Using MLNX 4.6-1.0.1 card drivers and inbox rdma.
The CX4 is functioning fine in Ethernet mode, has an ipv4 address, passes traffic, no problem.
I set “options roce_mode=2” in /etc/modprobe.d/mlx4.conf and verified after module loading by catting /sys/module/mlx4_core/parameters/roce_mode that indicates “2”.
When I start the inbox rdma services, the other non-Mellanox interfaces load their RoCE modules and appear functional in ibstatus. The Mellanox interface does not.
I can see that mlx4_code, mlx5_core, mlx4_ib and mlx5_ib modules are loaded but the _ib modules are not bound to any interfaces.
If I try to create their instances in configfs it fails.
mkdir /sys/kernel/config/rdma_cm/mlx5_0/
mkdir: cannot create directory ‘/sys/kernel/config/rdma_cm/mlx5_0/’: No such device
mkdir /sys/kernel/config/rdma_cm/mlx4_0
mkdir: cannot create directory ‘/sys/kernel/config/rdma_cm/mlx4_0’: No such device
The two onboard Intel i40e interfaces immediately initialize fine, load i40iw kernel module and appear as RDMA interfaces in ibstatus when I start inbox RDMA services so I know the RDMA services environment is functional. For some reason the CX416A will not come up as RDMA. Is there anything specific that has to be set in the CX416A with mstconfig? Is there a NUM_OF_VFS requirement or other card NVRAM setting required?
Does anyone have a how-to or know the magic incantation to get a CX416A to function in RoCE mode?
Thanks
Card NVRAM:
mstconfig -d 18:00.0 q
Device #1:
----------
Device type: ConnectX4
Name: MCX416A-BCA_Ax
Description: ConnectX-4 EN network interface card; 40GbE dual-port QSFP28; PCIe3.0 x16; ROHS R6
Device: 18:00.0
Configurations: Next Boot
MEMIC_BAR_SIZE 0
MEMIC_SIZE_LIMIT _256KB(1)
FLEX_PARSER_PROFILE_ENABLE 0
FLEX_IPV4_OVER_VXLAN_PORT 0
ROCE_NEXT_PROTOCOL 254
NON_PREFETCHABLE_PF_BAR False(0)
STRICT_VF_MSIX_NUM False(0)
VF_NODNIC_ENABLE False(0)
NUM_OF_VFS 8
FPP_EN True(1)
SRIOV_EN True(1)
PF_LOG_BAR_SIZE 5
VF_LOG_BAR_SIZE 0
NUM_PF_MSIX 63
NUM_VF_MSIX 11
INT_LOG_MAX_PAYLOAD_SIZE AUTOMATIC(0)
PARTIAL_RESET_EN False(0)
SW_RECOVERY_ON_ERRORS False(0)
RESET_WITH_HOST_ON_ERRORS False(0)
CQE_COMPRESSION BALANCED(0)
IP_OVER_VXLAN_EN False(0)
UCTX_EN True(1)
PCI_ATOMIC_MODE PCI_ATOMIC_DISABLED_EXT_ATOMIC_ENABLED(0)
LRO_LOG_TIMEOUT0 6
LRO_LOG_TIMEOUT1 7
LRO_LOG_TIMEOUT2 8
LRO_LOG_TIMEOUT3 13
LOG_DCR_HASH_TABLE_SIZE 14
DCR_LIFO_SIZE 16384
ROCE_CC_PRIO_MASK_P1 255
ROCE_CC_ALGORITHM_P1 ECN(0)
ROCE_CC_PRIO_MASK_P2 255
ROCE_CC_ALGORITHM_P2 ECN(0)
CLAMP_TGT_RATE_AFTER_TIME_INC_P1 True(1)
CLAMP_TGT_RATE_P1 False(0)
RPG_TIME_RESET_P1 300
RPG_BYTE_RESET_P1 32767
RPG_THRESHOLD_P1 1
RPG_MAX_RATE_P1 0
RPG_AI_RATE_P1 5
RPG_HAI_RATE_P1 50
RPG_GD_P1 11
RPG_MIN_DEC_FAC_P1 50
RPG_MIN_RATE_P1 1
RATE_TO_SET_ON_FIRST_CNP_P1 0
DCE_TCP_G_P1 1019
DCE_TCP_RTT_P1 1
RATE_REDUCE_MONITOR_PERIOD_P1 4
INITIAL_ALPHA_VALUE_P1 1023
MIN_TIME_BETWEEN_CNPS_P1 0
CNP_802P_PRIO_P1 6
CNP_DSCP_P1 48
CLAMP_TGT_RATE_AFTER_TIME_INC_P2 True(1)
CLAMP_TGT_RATE_P2 False(0)
RPG_TIME_RESET_P2 300
RPG_BYTE_RESET_P2 32767
RPG_THRESHOLD_P2 1
RPG_MAX_RATE_P2 0
RPG_AI_RATE_P2 5
RPG_HAI_RATE_P2 50
RPG_GD_P2 11
RPG_MIN_DEC_FAC_P2 50
RPG_MIN_RATE_P2 1
RATE_TO_SET_ON_FIRST_CNP_P2 0
DCE_TCP_G_P2 1019
DCE_TCP_RTT_P2 1
RATE_REDUCE_MONITOR_PERIOD_P2 4
INITIAL_ALPHA_VALUE_P2 1023
MIN_TIME_BETWEEN_CNPS_P2 0
CNP_802P_PRIO_P2 6
CNP_DSCP_P2 48
LLDP_NB_DCBX_P1 False(0)
LLDP_NB_RX_MODE_P1 OFF(0)
LLDP_NB_TX_MODE_P1 OFF(0)
LLDP_NB_DCBX_P2 False(0)
LLDP_NB_RX_MODE_P2 OFF(0)
LLDP_NB_TX_MODE_P2 OFF(0)
DCBX_IEEE_P1 True(1)
DCBX_CEE_P1 True(1)
DCBX_WILLING_P1 True(1)
DCBX_IEEE_P2 True(1)
DCBX_CEE_P2 True(1)
DCBX_WILLING_P2 True(1)
KEEP_ETH_LINK_UP_P1 True(1)
KEEP_IB_LINK_UP_P1 False(0)
KEEP_LINK_UP_ON_BOOT_P1 False(0)
KEEP_LINK_UP_ON_STANDBY_P1 False(0)
KEEP_ETH_LINK_UP_P2 True(1)
KEEP_IB_LINK_UP_P2 False(0)
KEEP_LINK_UP_ON_BOOT_P2 False(0)
KEEP_LINK_UP_ON_STANDBY_P2 False(0)
NUM_OF_VL_P1 _4_VLs(3)
NUM_OF_TC_P1 _8_TCs(0)
NUM_OF_PFC_P1 8
NUM_OF_VL_P2 _4_VLs(3)
NUM_OF_TC_P2 _8_TCs(0)
NUM_OF_PFC_P2 8
DUP_MAC_ACTION_P1 LAST_CFG(0)
SRIOV_IB_ROUTING_MODE_P1 LID(1)
IB_ROUTING_MODE_P1 LID(1)
DUP_MAC_ACTION_P2 LAST_CFG(0)
SRIOV_IB_ROUTING_MODE_P2 LID(1)
IB_ROUTING_MODE_P2 LID(1)
PCI_WR_ORDERING per_mkey(0)
MULTI_PORT_VHCA_EN False(0)
PORT_OWNER True(1)
ALLOW_RD_COUNTERS True(1)
RENEG_ON_CHANGE True(1)
TRACER_ENABLE True(1)
IP_VER IPv4(0)
BOOT_UNDI_NETWORK_WAIT 0
UEFI_HII_EN False(0)
BOOT_DBG_LOG False(0)
UEFI_LOGS DISABLED(0)
BOOT_VLAN 1
LEGACY_BOOT_PROTOCOL PXE(1)
BOOT_RETRY_CNT NONE(0)
BOOT_LACP_DIS True(1)
BOOT_VLAN_EN False(0)
BOOT_PKEY 0
EXP_ROM_UEFI_ARM_ENABLE False(0)
EXP_ROM_UEFI_x86_ENABLE False(0)
EXP_ROM_PXE_ENABLE True(1)
ADVANCED_PCI_SETTINGS False(0)
SAFE_MODE_THRESHOLD 10
SAFE_MODE_ENABLE True(1)