sockmap_fd = bpf_map__fd(skel->maps.sock_map); proxymap_fd = bpf_map__fd(skel->maps.proxy_map); progs_fd[0] = bpf_program__fd(skel->progs.bpf_skb_parser); err=bpf_prog_attach(progs_fd[0], sockmap_fd, BPF_SK_SKB_STREAM_PARSER, 0); if(err) { printf("ERROR: bpf_prog_...
*/ const char *argp_program_version = "ts_print 0.0";//程序版本 const char *argp_program_bug_address = "<bpf@vger.kernel.org>";//错误地址 /*对程序目的的描述*/ const char argp_program_doc[] = "BPF ts_print demo application.\n"//BPF ts_print演示程序 "\n" "It traces process ...
1,297 조회수 I am using ubuntu 22.04.2 with the intel ice driver v 1.11.14 downloaded from intel.com When using an XDP redirect based bpf program, I noticed random packet loss, even at low packet rates. After some tracing, I found that the struct xd...
bpf中可以通过bpf_core_read获取结构体成员,所以通过task_struct是否可以逐步获取cgroup目录?答案是可以间接获取,无法直接获取。 bpf中通过task_struct可以获取到对应subgroup的knid,但是通过knid找到目录需要用户态来获取。 查找方法: 1)task_struct->cgroups->subsys[CGROUP_SUBSYS_COUNT]->cgroup->kn->id.id ...
在Ubuntu 下,top 命令可以监视即时的进程状态。通过man top查看了top的基本用法,在 top 中,按 u,再输入你的用户名,可以限定只显示以你的身份运行的进程,更方便观察。按 h 可得到帮助。 二、打印task_struct字段信息 2.1、探索task_struct字段: 操作系统为了对进程更好的管理,专门用一个结构体来保存进程的相关...
intmap_check_no_btf(conststructbpf_map*map, Expand DownExpand Up@@ -441,7 +444,8 @@ struct btf_func_model { * fentry = a set of program to run before calling original function * fexit = a set of program to run after original function ...
struct bpf_program bpf_filter;//过滤规则char bpf_filter_string[]="";bpf_u_int32 net_mask;//网络掩码bpf_u_int32 net_ip;//网络地址net_interface=pcap_lookupdev(error_content);//获得网络接口pcap_lookupnet(net_interface,&net_ip,&net_mask,error_content);//获得网络地址和网络掩码pcap_handle=...
fd = bpf_prog_get_fd_by_id(id); @@ -1671,17 +1701,23 @@ static struct xdp_multiprog *xdp_multiprog__from_id(__u32 id, int ifindex) pr_warn("couldn't get program fd: %s", strerror(-err)); return ERR_PTR(err); } mp = xdp_multiprog__from_fd(fd, ifindex);...
atomset def, kill; // typedef bpf_u_int32 *uset; 定义 atomset in_use; atomset out_use; int oval; int val[N_ATOMS]; // #define N_ATOMS (BPF_MEMWORDS+2) = 18 }; --- optimize.c:icode_to_fcode(root, lenp) pcap虚拟机的重要级函数...
I am using ubuntu 22.04.2 with the intel ice driver v 1.11.14 downloaded from intel.com When using an XDP redirect based bpf program, I noticed random packet loss, even at low packet rates.After some tracing, I found that the struct xdp_buff often had a...