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1 .\" Copyright (c) 2011-2016, Chelsio Inc
21 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
37 .Nd "Chelsio T4-, T5-, and T6-based 100Gb, 40Gb, 25Gb, 10Gb, and 1Gb Ethernet adapter driver"
42 .Bd -ragged -offset indent
49 .Bd -literal -offset indent
60 The driver supports Jumbo Frames, Transmit/Receive checksum offload,
62 tag insertion/extraction, VLAN checksum offload, VLAN TSO, VXLAN checksum
71 .Bl -column -offset indent "ASIC" "Port Name" "Parent Device"
78 Loader tunables with the hw.cxgbe prefix apply to all cards.
82 adapter-wide MIBs under dev.t5nex.
84 dev.<port> for port MIBs and dev.<nexus> for adapter-wide MIBs.
93 .Bl -bullet -compact
95 Chelsio T6225-CR
97 Chelsio T6225-SO-CR
99 Chelsio T62100-LP-CR
101 Chelsio T62100-SO-CR
103 Chelsio T62100-CR
110 .Bl -bullet -compact
112 Chelsio T580-CR
114 Chelsio T580-LP-CR
116 Chelsio T580-LP-SO-CR
118 Chelsio T560-CR
120 Chelsio T540-CR
122 Chelsio T540-LP-CR
124 Chelsio T522-CR
126 Chelsio T520-LL-CR
128 Chelsio T520-CR
130 Chelsio T520-SO
132 Chelsio T520-BT
134 Chelsio T504-BT
141 .Bl -bullet -compact
143 Chelsio T420-CR
145 Chelsio T422-CR
147 Chelsio T440-CR
149 Chelsio T420-BCH
151 Chelsio T440-BCH
153 Chelsio T440-CH
155 Chelsio T420-SO
157 Chelsio T420-CX
159 Chelsio T420-BT
161 Chelsio T404-BT
172 .Bl -tag -width indent
173 .It Va hw.cxgbe.ntxq
177 .It Va hw.cxgbe.nrxq
181 .It Va hw.cxgbe.nofldtxq
185 .It Va hw.cxgbe.nofldrxq
189 .It Va hw.cxgbe.num_vis
199 .It Va hw.cxgbe.holdoff_timer_idx
200 .It Va hw.cxgbe.holdoff_timer_idx_ofld
209 .It Va hw.cxgbe.holdoff_pktc_idx
210 .It Va hw.cxgbe.holdoff_pktc_idx_ofld
211 Packet-count index value used to delay interrupts.
212 The packet-count list has the values 1, 8, 16, and 32 by default,
215 The default value is -1 which means packet counting is disabled and interrupts
221 .It Va hw.cxgbe.qsize_txq
232 .It Va hw.cxgbe.qsize_rxq
239 .It Va hw.cxgbe.interrupt_types
241 Bit 0 represents INTx (line interrupts), bit 1 MSI, and bit 2 MSI-X.
244 .It Va hw.cxgbe.pcie_relaxed_ordering
246 -1 indicates the driver should determine whether to enable or disable PCIe RO.
250 The default is -1.
251 .It Va hw.cxgbe.fw_install
260 .It Va hw.cxgbe.fl_pktshift
266 0-7 are all valid values.
267 .It Va hw.cxgbe.fl_pad
268 A non-zero value ensures that writes from the hardware to a receive buffer are
270 The default is -1 which lets the driver pick a pad boundary.
272 .It Va hw.cxgbe.cong_drop
274 -1 disables congestion feedback and is not recommended.
279 .It Va hw.cxgbe.pause_settings
290 Settings can be displayed and controlled on a per-port basis via the
292 .It Va hw.cxgbe.fec
294 -1 (default) means driver should automatically pick a value.
297 Bit 0 enables RS FEC, bit 1 enables BASE-R FEC (aka Firecode FEC), bit
298 2 enables NO FEC, and bit 6 enables the FEC that is recommended by the
302 Settings can be controlled on a per-port basis via the
306 .It Va hw.cxgbe.autoneg
309 Settings can be displayed and controlled on a per-port basis via the
313 The default is -1 which lets the driver pick a value.
314 dev.<port>.X.autoneg is -1 for port and module combinations that do not support
316 .It Va hw.cxgbe.buffer_packing
319 The default is -1 which lets the driver decide.
321 .It Va hw.cxgbe.largest_rx_cluster
322 .It Va hw.cxgbe.safest_rx_cluster
331 Note that largest_rx_cluster merely establishes a ceiling -- the driver is
333 .It Va hw.cxgbe.config_file
334 Select a pre-packaged device configuration file.
341 .It Va hw.cxgbe.linkcaps_allowed
342 .It Va hw.cxgbe.niccaps_allowed
343 .It Va hw.cxgbe.toecaps_allowed
344 .It Va hw.cxgbe.rdmacaps_allowed
345 .It Va hw.cxgbe.iscsicaps_allowed
346 .It Va hw.cxgbe.fcoecaps_allowed
349 Each of these is a bit field with a bit for each sub-capability within the
355 .It Va hw.cxgbe.tx_vm_wr
366 .It Va hw.cxgbe.attack_filter
374 .It Va hw.cxgbe.drop_ip_fragments
378 .It Va hw.cxgbe.drop_pkts_with_l2_errors
379 Set to 1 to drop incoming frames with Layer 2 length or checksum errors.
381 .It Va hw.cxgbe.drop_pkts_with_l3_errors
382 Set to 1 to drop incoming frames with IP version, length, or checksum errors.
383 The IP checksum is validated for TCP or UDP packets only.
385 .It Va hw.cxgbe.drop_pkts_with_l4_errors
387 checksum, or other errors.
420 .An -nosplit