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20
494
Views

Are Berkeley Packet Filter opcode values implementation defined?

Published on
#kernel #libpcap #tcpdump #bpf
977
Views

How to build Linux kernel to support SO_ATTACH_BPF socket option?

Published on
#linux #sockets #linux-kernel #bpf #ebpf
3k
Views

BPF in python to sniff packets for multiple TCP ports

Published on
#python #sockets #tcp #bpf
4.3k
Views

Packet filtering with Netfilter's NFQUEUE vs. Berkeley Packet Filter (BPF)

Published on
#linux #iptables #netfilter #bpf
706
Views

seccomp-bpf - how can i use bpf to filter the arguments of a system call?

Published on
#c #filter #seccomp #bpf
1k
Views

How can I re-filter a scapy packet using BPF?

Published on
#python #scapy #bpf
1.2k
Views

Tc bpf packet forward to other device by updating the Checksum

Published on
#bpf #ebpf #xdp-bpf
789
Views

Correct filter expression in libpcap for outgoing packets

Published on
#c #libpcap #bpf
244
Views

What causes `bpf_perf_event_output` to return -22?

Published on
#c #tcp #ebpf #bpf
106
Views

How to bind a UDP socket using SO_ATTACH_REUSEPORT_CBPF?

Published on
#c #udp #bpf #so-reuseport
70
Views

bpftrace tracepoint:syscalls:sys_enter_getcwd can't capture my user process

Published on
#bpf #bpftrace
174
Views

How to access user space function argument (struct pointer) in bpf?

Published on
#c #linux-kernel #ebpf #bpf #libbpf
197
Views

How to unload bpd program using bpftool?

Published on
#ebpf #bpf
281
Views

What is the recommended way to unit test eBPF/XDP program?

Published on
#ebpf #bpf #xdp-bpf #bcc-bpf
116
Views

Cannot run bpftrace from docker executor

Published on
#linux #docker #gitlab-ci-runner #bpf #bpftrace
242
Views

ebpf verifier - failed to find kernel BTF type ID

Published on
#linux-kernel #ebpf #bpf
126
Views

Sharing bpf map between two independent programs

Published on
#c #ebpf #bpf
172
Views

bpf_probe_read_user() is throwing `permission denied: invalid access to map value` in an ebpf program

Published on
#c #ebpf #bpf #libbpf
26
Views

Path printed twice, separated by numerous empty linesusing bpf_d_path(&file->f_path , d_path_buf , MAX_STR);

Published on
#ebpf #bpf
125
Views

eBPF uprobe Go function argument wrong output

Published on
#linux-kernel #ebpf #bpf #libbpf #cilium

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