This helps spreading the load on multi-ple CPU cores, eases on-NIC trafc ltering, and helps decouplingvirtual machines sharing the same hardware. On a 2.6 kernel for x86, MAX_SKB_FRAGS is 18. Some high speed NICs support multiple transmit and receive rings. MAX_SKB_FRAGS varies on different kernels and differentĪrchitectures.
RX Jumbo Ring Size: 0 (range 0–16320) adjusted by the driver based on MTU and RX Ring Size The provided library is currently minimal and doesnt support all the features that Netmap supports, but is enough to run simple applications, such as the.
Speed: Autonegotiation with all speeds advertisedįlow Control: Autonegotiation with RX and TX advertised It can easily reach line rate on 10G NICs (. Please find below the relevant information and a dump of my command line: netmap supports access to network cards (NICs), host stack, virtual ports (the VALE switch), and netmap pipes. I also am already running 2.4 so if it works there but not 2.3 that's fine.
Can anyone shed some light on this for me? Most posts I have found regarding the "SIOCSIFMTU: Invalid argument" error message state the problem is the kernel or the driver. Hey I was wondering if anyone knows if Intel i350 t4 supports Netmap I believe it uses the IGB4 driver afaik, it's a authentic I350t4, if that matters. The NIC supports jumbo frames as should the bxn2 driver, according to Broadcom documentation. XDP is technically not a user space framework: the code is compiled to eBPF which is run by a JIT in the kernel, this restricts the choice of programming. I have an old dell poweredge 2900 running CentOS 6.6 and can not set jumbo frames on my Broadcom BCM5708(v12) NIC. Further, netmap supports using a NIC with both netmap and the kernel simultaneously by using hardware filters to steer packets to receive queues either managed by netmap or the kernel 3.