User Manual

Rev 2.2-1.0.1
Mellanox Technologies
298
B.3 mlx4_en Parameters
inline_thold: Threshold for using inline data (int)
Default and max value is 104 bytes. Saves PCI read operation
transaction, packet less then threshold size will be copied to
hw buffer directly.
udp_rss: Enable RSS for incoming UDP traffic (uint)
On by default. Once disabled no RSS for incoming UDP traffic
will be done.
pfctx: Priority based Flow Control policy on TX[7:0]. Per priority
bit mask (uint)
pfcrx: Priority based Flow Control policy on RX[7:0]. Per priority
bit mask (uint)
log_num_mgm_entry_size: log mgm size, that defines the num of qp per mcg, for example:
10 gives 248.range: 7 <= log_num_mgm_entry_size <= 12. To
activate device managed flow steering when available, set to -
1 (int)
high_rate_steer: Enable steering mode for higher packet rate (default off)
(int)
fast_drop: Enable fast packet drop when no recieve WQEs are posted (int)
enable_64b_cqe_eqe: Enable 64 byte CQEs/EQEs when the FW supports this if non-zero
(default: 1) (int)
log_num_mac: Log2 max number of MACs per ETH port (1-7) (int)
log_num_vlan: (Obsolete) Log2 max number of VLANs per ETH port (0-7) (int)
log_mtts_per_seg: Log2 number of MTT entries per segment (0-7) (default: 0) (int)
port_type_array: Either pair of values (e.g. '1,2') to define uniform port1/
port2 types configuration for all devices functions or a
string to map device function numbers to their pair of port
types values (e.g. '0000:04:00.0-1;2,002b:1c:0b.a-1;1').
Valid port types: 1-ib, 2-eth, 3-auto, 4-N/A
If only a single port is available, use the N/A port type for
port2 (e.g '1,4').
log_num_qp: log maximum number of QPs per HCA (default: 19) (int)
log_num_srq: log maximum number of SRQs per HCA (default: 16) (int)
log_rdmarc_per_qp: log number of RDMARC buffers per QP (default: 4) (int)
log_num_cq: log maximum number of CQs per HCA (default: 16) (int)
log_num_mcg: log maximum number of multicast groups per HCA (default: 13)
(int)
log_num_mpt: log maximum number of memory protection table entries per HCA
(default: 19) (int)
log_num_mtt: log maximum number of memory translation table segments per
HCA (default: max(20, 2*MTTs for register all of the host mem-
ory limited to 30)) (int)
enable_qos: Enable Quality of Service support in the HCA (default: off)
(bool)
internal_err_reset: Reset device on internal errors if non-zero (default is 0)
(int)