Repacket is a CLI tool to rewrite packets using XDP!
Repacket requires root authority.
repacket if [expressions] then [expressions]
Repacket can be used as follows.
🌟 Please specify if/then expressions.
repacket if udp_dest 443 then udp_dest 50000
🌟 "all" means no filter.
repacket if all then ip_tos 0
🌟 Multiple parameters are welcome.
repacket if tcp_ack on tcp_psh on then tcp_dest 50000
🌟 Impossible combination won't be executed. Error!
repacket if tcp_cwr on then udp_check 0xcafe
Filtering rules (shown as [expression] in Usage) are specified using following parameter.
ip_ver
ip_hl
ip_tos
ip_dscp
ip_ecn
ip_tot_len
ip_id
ip_flags
ip_flag_res
ip_flag_df
ip_flag_mf
ip_offset
ip_ttl
ip_protocol
ip_check
ip_src
tcp_src
tcp_dest
tcp_seq
tcp_ack_seq
tcp_hlen
tcp_res
tcp_nonce
tcp_cwr
tcp_ece
tcp_urg
tcp_ack
tcp_psh
tcp_rst
tcp_syn
tcp_fin
tcp_window
tcp_check
tcp_urg_ptr
udp_src
udp_dest
udp_len
udp_check
icmp_type
icmp_code
icmp_check
TODO
facebookincubator/katran
linux/samples/bpf
xdp-project/xdp-tutorial
takehaya/Vinbero