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1 .. SPDX-License-Identifier: GPL-2.0
4 Neterion's (Formerly S2io) Xframe I/II PCI-X 10GbE driver
7 Release notes for Neterion's (Formerly S2io) Xframe I/II PCI-X 10GbE driver.
10   - 1.  Introduction
11   - 2.  Identifying the adapter/interface
12   - 3.  Features supported
13   - 4.  Command line parameters
14   - 5.  Performance suggestions
15   - 6.  Available Downloads
20 This Linux driver supports Neterion's Xframe I PCI-X 1.0 and
21 Xframe II PCI-X 2.0 adapters. It supports several features
22 such as jumbo frames, MSI/MSI-X, checksum offloads, TSO, UFO and so on.
37 	# dmesg | tail -40
41 	eth3: Neterion Xframe I 10GbE adapter (rev 3), Version 2.0.9.1, Intr type INTA
46 driver version, interface name(eth3, eth4), Interrupt type(INTA, MSI, MSI-X).
47 In case of Xframe II, the PCI/PCI-X bus width and frequency are displayed
50 To associate an interface with a physical adapter use "ethtool -p <ethX>".
53 3. Features supported
61 c. Multi-buffer receive mode. Scattering of packet across multiple
62    buffers. Currently driver supports 2-buffer mode which yields
66 d. MSI/MSI-X. Can be enabled on platforms which support this feature
70 e. Statistics. Comprehensive MAC-level and software statistics displayed
71    using "ethtool -S" option.
73 f. Multi-FIFO/Ring. Supports up to 8 transmit queues and receive rings,
82 Valid range: 1-8
89 Valid range: 1-8
100 d. rx_ring_sz
108 	Specifies interrupt type. Possible values 0(INTA), 2(MSI-X)
119 a. Set MTU to maximum(9000 for switch setup, 9600 in back-to-back configuration)
125 	# sysctl -w net.ipv4.tcp_rmem="210000 210000 210000"
126 	# sysctl -w net.ipv4.tcp_wmem="210000 210000 210000"
130 	# sysctl -w net.ipv4.tcp_rmem="10000000 10000000 10000000"
131 	# sysctl -w net.ipv4.tcp_wmem="10000000 10000000 10000000"
137    max-split-transactions(MOST) and MMRBC (use setpci command).
139    A MOST value of 2 has been found optimal for Opterons and 3 for Itanium.
149 	#setpci -d 17d5:* 62=1d
153 	#setpci -d 17d5:* 62=3d
160 c. Turn on TSO(using "ethtool -K")::
162 	# ethtool -K <ethX> tso on
169 	#setpci -d 17d5:* LATENCY_TIMER=f8
173 b. Use 2-buffer mode. This results in large performance boost on
176 c. Ensure Receive Checksum offload is enabled. Use "ethtool -K ethX" command to
179 d. Enable NAPI feature(in kernel configuration Device Drivers ---> Network
180    device support --->  Ethernet (10000 Mbit) ---> S2IO 10Gbe Xframe NIC) to
189 http://vip.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/
190 26310_AMD-8131_HyperTransport_PCI-X_Tunnel_Revision_Guide_rev_3_18.pdf