Here’s an example of my Linux firewall at home.
Linux firewall with a dual-port PCI card # The function indexes are 0 and 1 (for both ports on the Intel 82599ES). That means they’re on a hotplug slot which happens to be slot 9. We already looked at the hotplug slot naming from Rackspace’s OnMetal servers. Scroll down just a bit more for some examples starting at line 56. Ethernet cards will always start with en, but they might be followed by a p (for PCI slots), a s (for hotplug PCI-E slots), and o (for onboard cards). So here’s where our names actually begin. * Two character prefixes based on the type of interface: * - physical/geographical location of the hardware * - firmware-provided pci-express hotplug slot index number * - firmware/bios-provided index numbers for on-board devices * Predictable network interface device names based on: Let’s take a look at src/udev/udev-builtin-net_id.c: /*
#Oneboard pci code#
Where do these names come from? We can dig into systemd’s source code to figure out the origin of the names and which one is selected as the final choice. This udev database dump shows that it came up with a few different names for the network interface: What’s in a name? #īack in the systemd-networkd bonding post, I dug into a dual port Intel network card that showed up in a hotplug slot: # udevadm info -e | grep -A 9 ^P.*eth0 These predictable network device names threw me a curveball last summer when I couldn’t figure out how the names were constructed. Tel: 42 Fax: 42.I talked a bit about systemd’s network device name in my earlier post about systemd-networkd and bonding and I received some questions about how systemd rolls through the possible names of network devices to choose the final name. Microstar Laboratories, 2265 116th Avenue NorthEast, Bellevue, WA 98004.
#Oneboard pci update#
The two onboard analog output channels each can run at 400k updates per second for an overall 800k updates per second, and the 8 onboard digital output channels update at an overall 800k words per second. The onboard analog input channels sample at an overall 800k samples per second, and the 8 onboard digital input channels sample at an overall rate of 800k words per second. The model provides 14-bit A/D resolution for its 8 onboard analog inputs, and 12-bit D/A resolution for its 2 onboard analog outputs. The onboard operating system provides over 100 easy-to-use commands optimized for data acquisition and control. Designing a data acquisition and control application involves specifying exactly how the model has to behave during the application.
#Oneboard pci Pc#
Onboard intelligence manages this resource to protect an application from random operating system and network delays: DAPL 2000 supervises data acquisition and process control free from any resource demands imposed by Windows or by other programs running on the PC at the same time. The board has 8 MB of onboard memory for data buffers, and uses DMA bus-mastering to transfer data to the PC from the onboard memory. The model has 8 onboard analog inputs, 2 onboard analog outputs, 8 onboard digital inputs, and 8 onboard digital outputs. A user also can exercise control remotely from any other Windows (2000, NT, 98, 95) system on the same network. It has onboard intelligence implemented as DAPL 2000: a 32-bit multitasking real-time operating system that runs on an onboard processor the user controls this from any Windows (2000, NT, 98, 95) system that contains the board. The new DAP 840/103 model is a low-cost PCI DAP board for 32-bit real-time processing: local or remote.
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