原创 Link list usage
Link list usage 1. define the list head with global variable static LIST_HEAD(sample_dev_list); 2. define a sample stru
2020-05-26 13:49:37
原创 steps to reproduce a TC rule error
1. /workspace/cloud_tools/configure_asap_devtest_env.sh 2. export CONFIG=/workspace/dev_reg_conf.sh 3. ifconfig enp0s8f
2020-05-25 10:41:54
原创 install dpdk, pktgen-dpdk in centos76
1. in centos 7.6 yum makecache; yum install -y gcc gcc-c++ kernel-devel kernel-headers kernel.x86_64 net-tools yum ins
2020-05-10 17:02:23
原创 Steps to verify "replace pop/push with rewrite"
Steps to verify "replace pop/push with rewrite" echo 2 > /sys/class/net/enp0s8f0/device/sriov_numvfs sleep 3 ip link se
2020-05-06 08:30:19
原创 change the color of comments in VIM
Add the following " highlight Comment ctermfg=LightBlue " into ~/.vimrc
2020-02-29 14:42:23
原创 rdma commad: rping install and example
rping： yum install librdmacm-utils -y rping -s -a 192.168.200.131 -v -C 10 rping-c -a 192.168.210.131 -v -C 10
2020-02-29 14:42:23
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原创 container_of的實現
面試的過程中，container_of的實現很重要: #define container_of(ptr, type, member) ({ \ const typeof( ((type *)0)-
2020-02-21 08:26:40
原创 2 qemu hosts connect to each other in CentOS
1. Boot 2 qemu hosts with the following commands: " qemu-system-x86_64 -smp 4 -hda ubuntu1604-svr-1.img -m 4G -device v
2020-02-21 08:26:40
原创 rdma-core on centos 7.2
rdma-core on centos 7.2 1. git clone http://l-gerrit.mtl.labs.mlnx:8080/mlnx_ofed/rdma-core 2. Use fprintf add logs; th
2020-02-21 08:26:40
原创 面試C語言題目
L1, L2 - 2 signle linked list , Null terminate. p1, p2 are pointer to L1 ,L2 describe an effieicnt way to retrive the f
2020-02-21 08:26:40
原创 mlnx-ofed comile and install
mlnx-ofed comile and install 1. git clone http://l-gerrit.mtl.labs.mlnx:8080/mlnx_ofed/mlnx-ofa_kernel-4.0.git 2. ln
2020-02-21 08:26:40
原创 面試題目
1. 遞歸方法輸出字符 void revert_string(char *str) { if (str[0] == \0) { printf("%c", str[0]); } else {
2020-02-21 08:26:39
原创 simple rdma example
#include <stdio.h> #include <infiniband/verbs.h> struct reg_mr { uint32_t command; uint16_t in_words; uint1
2020-02-21 08:26:39
原创 call trace in userspace
A function to print the stack like the kernel in userspace. void call_trace() { void* callstack[128]; int i, fr
2020-02-21 08:26:39
原创 6.4. Controlling a Process with GDB
6.4. Controlling a Process with GDB GDB is designed to take control of a live process or to load a process image (a “co
2019-10-26 18:11:11
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