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| 1 | Neterion's (Formerly S2io) X3100 Series 10GbE PCIe Server Adapter Linux driver | ||
| 2 | ============================================================================== | ||
| 3 | |||
| 4 | Contents | ||
| 5 | -------- | ||
| 6 | |||
| 7 | 1) Introduction | ||
| 8 | 2) Features supported | ||
| 9 | 3) Configurable driver parameters | ||
| 10 | 4) Troubleshooting | ||
| 11 | |||
| 12 | 1) Introduction: | ||
| 13 | ---------------- | ||
| 14 | This Linux driver supports all Neterion's X3100 series 10 GbE PCIe I/O | ||
| 15 | Virtualized Server adapters. | ||
| 16 | The X3100 series supports four modes of operation, configurable via | ||
| 17 | firmware - | ||
| 18 | Single function mode | ||
| 19 | Multi function mode | ||
| 20 | SRIOV mode | ||
| 21 | MRIOV mode | ||
| 22 | The functions share a 10GbE link and the pci-e bus, but hardly anything else | ||
| 23 | inside the ASIC. Features like independent hw reset, statistics, bandwidth/ | ||
| 24 | priority allocation and guarantees, GRO, TSO, interrupt moderation etc are | ||
| 25 | supported independently on each function. | ||
| 26 | |||
| 27 | (See below for a complete list of features supported for both IPv4 and IPv6) | ||
| 28 | |||
| 29 | 2) Features supported: | ||
| 30 | ---------------------- | ||
| 31 | |||
| 32 | i) Single function mode (up to 17 queues) | ||
| 33 | |||
| 34 | ii) Multi function mode (up to 17 functions) | ||
| 35 | |||
| 36 | iii) PCI-SIG's I/O Virtualization | ||
| 37 | - Single Root mode: v1.0 (up to 17 functions) | ||
| 38 | - Multi-Root mode: v1.0 (up to 17 functions) | ||
| 39 | |||
| 40 | iv) Jumbo frames | ||
| 41 | X3100 Series supports MTU up to 9600 bytes, modifiable using | ||
| 42 | ifconfig command. | ||
| 43 | |||
| 44 | v) Offloads supported: (Enabled by default) | ||
| 45 | Checksum offload (TCP/UDP/IP) on transmit and receive paths | ||
| 46 | TCP Segmentation Offload (TSO) on transmit path | ||
| 47 | Generic Receive Offload (GRO) on receive path | ||
| 48 | |||
| 49 | vi) MSI-X: (Enabled by default) | ||
| 50 | Resulting in noticeable performance improvement (up to 7% on certain | ||
| 51 | platforms). | ||
| 52 | |||
| 53 | vii) NAPI: (Enabled by default) | ||
| 54 | For better Rx interrupt moderation. | ||
| 55 | |||
| 56 | viii)RTH (Receive Traffic Hash): (Enabled by default) | ||
| 57 | Receive side steering for better scaling. | ||
| 58 | |||
| 59 | ix) Statistics | ||
| 60 | Comprehensive MAC-level and software statistics displayed using | ||
| 61 | "ethtool -S" option. | ||
| 62 | |||
| 63 | x) Multiple hardware queues: (Enabled by default) | ||
| 64 | Up to 17 hardware based transmit and receive data channels, with | ||
| 65 | multiple steering options (transmit multiqueue enabled by default). | ||
| 66 | |||
| 67 | 3) Configurable driver parameters: | ||
| 68 | ---------------------------------- | ||
| 69 | |||
| 70 | i) max_config_dev | ||
| 71 | Specifies maximum device functions to be enabled. | ||
| 72 | Valid range: 1-8 | ||
| 73 | |||
| 74 | ii) max_config_port | ||
| 75 | Specifies number of ports to be enabled. | ||
| 76 | Valid range: 1,2 | ||
| 77 | Default: 1 | ||
| 78 | |||
| 79 | iii)max_config_vpath | ||
| 80 | Specifies maximum VPATH(s) configured for each device function. | ||
| 81 | Valid range: 1-17 | ||
| 82 | |||
| 83 | iv) vlan_tag_strip | ||
| 84 | Enables/disables vlan tag stripping from all received tagged frames that | ||
| 85 | are not replicated at the internal L2 switch. | ||
| 86 | Valid range: 0,1 (disabled, enabled respectively) | ||
| 87 | Default: 1 | ||
| 88 | |||
| 89 | v) addr_learn_en | ||
| 90 | Enable learning the mac address of the guest OS interface in | ||
| 91 | virtualization environment. | ||
| 92 | Valid range: 0,1 (disabled, enabled respectively) | ||
| 93 | Default: 0 | ||
| 94 | |||
| 95 | 4) Troubleshooting: | ||
| 96 | ------------------- | ||
| 97 | |||
| 98 | To resolve an issue with the source code or X3100 series adapter, please collect | ||
| 99 | the statistics, register dumps using ethool, relevant logs and email them to | ||
| 100 | support@neterion.com. | ||
