原创 Change default rpm build root directory
Change default rpm build root. # cat ~/.rpmmacros %_topdir /images/yanjunz/rpmbuild/
2020-06-28 06:49:46
原创 make qemu work with cx5 passthrough in centos
make qemu work with cx5 passthrough in centos 1. In BIOS, enable IOMMU. Security->Virtualization->VT-d 2. In kernel opt
2020-06-28 06:49:46
1
原创 send 32768 different MAC addresses to the server
The client sends 32768 different MAC addresses to the server. Then the server creates 32768 rules, then offloads these
2020-06-16 10:58:49
2
原创 configure switchdev mode to run hardware offload test
1. set 2 VFs echo 2 > /sys/class/net/eth2/device/sriov_numvfs ip link show " ... 17: eth2: <BROADCAST,MULTICAST,UP,LOW
2020-06-16 10:58:49
17
原创 Backport egdev mechanism to redhat kernel 3.10.0-1127
In the latest linux kernel, egdev mechanism is removed. But in some functions, this egdev mechanism is still used. So t
2020-06-16 10:58:38
原创 2 Simple conntrack rules
1. OVS_BR=ovs-sriov ovs-ofctl del-flows $OVS_BR #set arp to behave normally, ip will mark trk and then proceed to tab
2020-06-16 10:58:38
原创 Configure local port mirroring + conntrack
1. #enable sriov echo 2 > /sys/class/net/eth3/device/sriov_numvfs lspci | grep -i mellanox 2. #unbind VFs echo 0000:0
2020-06-16 10:58:38
原创 softroce 測試帶寬和延遲
Bandwidth test Server: ib_send_bw -n 10000 -d rxe0 -i 1 -F --report_gbits Clinet: ib_send_bw -n 10000 -d rxe0 -i 1 -F -
2020-06-16 10:58:38
原创 Configure remote port mirroring with ASAP^2
0. #udev rules SUBSYSTEM=="net", ACTION=="add", ATTR{phys_switch_id}!="", ATTR{phys_port_name}!="", \ IMPORT{
2020-06-16 10:58:38
原创 redhat kernel 3.10.0-xxx and OFED debug general methods
The ofed bug steps: 1. kernel 3.10.0-1127 build and add logs 1) rpm -hiv http://ftp.lip6.fr/pub/linux/distributions/sci
2020-06-16 10:58:38
原创 在ububtu 18.04製作deb文件
clone 如下兩個 git 倉庫： git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git https://salsa.debi
2020-06-16 10:58:38
原创 find the function name according to function pointer
To find the function name that a function pointer is pointing to, you can use the followings In the Linux kernel, you c
2020-06-16 10:58:38
原创 ECMP + CT offload in MLX5 NIC
1. git clone https://github.com/zhuyj/kernel-5.4.30-qingcloud.git --branch=origin/remotes/origin/miniflow_ct_offload_Ub
2020-06-16 10:58:38
原创 Configure local mirror with ASAP^2
Configure local mirror with ASAP^2 0. #udev rules SUBSYSTEM=="net", ACTION=="add", ATTR{phys_switch_id}!="", ATTR{phys_
2020-06-16 10:58:38
原创 mac address convert to ipv6 link local address
#include <stdio.h> #include <string.h> int toogle_kth_bit(unsigned int n, int k) { return (n ^ (1 << (k-1))); }
2020-05-26 13:49:37