/* * netsniff-ng - the packet sniffing beast * Copyright 2013 Daniel Borkmann. * Subject to the GPL, version 2. */ #define NEED_TCPDUMP_LIKE_FILTER #include #include #include "xmalloc.h" #include "config.h" #include "bpf.h" #include "die.h" void bpf_try_compile(const char *rulefile, struct sock_fprog *bpf, uint32_t link_type) { int i, ret; const struct bpf_insn *ins; struct sock_filter *out; struct bpf_program _bpf; ret = pcap_compile_nopcap(65535, link_type, &_bpf, rulefile, 1, 0xffffffff); if (ret < 0) panic("Cannot compile filter %s\n", rulefile); bpf->len = _bpf.bf_len; bpf->filter = xrealloc(bpf->filter, 1, bpf->len * sizeof(*out)); for (i = 0, ins = _bpf.bf_insns, out = bpf->filter; i < bpf->len; ++i, ++ins, ++out) { out->code = ins->code; out->jt = ins->jt; out->jf = ins->jf; out->k = ins->k; if (out->code == 0x06 && out->k > 0) out->k = 0xFFFFFFFF; } pcap_freecode(&_bpf); if (__bpf_validate(bpf) == 0) panic("This is not a valid BPF program!\n"); } mit();'> net-next plumbingsTobias Klauser

path: root/Documentation

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author	Al Viro <viro@zeniv.linux.org.uk>	2016-05-11 00:00:29 -0400
committer	Al Viro <viro@zeniv.linux.org.uk>	2016-05-11 00:00:29 -0400
commit	e4d35be584be88a3db3fa5635a97c62a2ec5aafe (patch)
tree	fc22a7fb65697306edd71411959ccee6df60c64d /Documentation
parent	99d825822eade8d827a1817357cbf3f889a552d6 (diff)
parent	38b78a5f18584db6fa7441e0f4531b283b0e6725 (diff)

Merge branch 'ovl-fixes' into for-linus

Diffstat (limited to 'Documentation')


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