diff options
| -rw-r--r-- | sys/net/bpf.h | 3 | ||||
| -rw-r--r-- | sys/net/bpf_filter.c | 7 |
2 files changed, 8 insertions, 2 deletions
diff --git a/sys/net/bpf.h b/sys/net/bpf.h index 2232d1325e7..f5e0fa91e69 100644 --- a/sys/net/bpf.h +++ b/sys/net/bpf.h @@ -1,4 +1,4 @@ -/* $OpenBSD: bpf.h,v 1.69 2020/06/18 23:27:58 dlg Exp $ */ +/* $OpenBSD: bpf.h,v 1.70 2020/08/03 03:21:24 dlg Exp $ */ /* $NetBSD: bpf.h,v 1.15 1996/12/13 07:57:33 mikel Exp $ */ /* @@ -237,6 +237,7 @@ struct bpf_hdr { #define BPF_MEM 0x60 #define BPF_LEN 0x80 #define BPF_MSH 0xa0 +#define BPF_RND 0xc0 /* alu/jmp fields */ #define BPF_OP(code) ((code) & 0xf0) diff --git a/sys/net/bpf_filter.c b/sys/net/bpf_filter.c index e46bf0799ba..d6561ec5923 100644 --- a/sys/net/bpf_filter.c +++ b/sys/net/bpf_filter.c @@ -1,4 +1,4 @@ -/* $OpenBSD: bpf_filter.c,v 1.33 2017/09/08 05:36:53 deraadt Exp $ */ +/* $OpenBSD: bpf_filter.c,v 1.34 2020/08/03 03:21:24 dlg Exp $ */ /* $NetBSD: bpf_filter.c,v 1.12 1996/02/13 22:00:00 christos Exp $ */ /* @@ -199,6 +199,10 @@ _bpf_filter(const struct bpf_insn *pc, const struct bpf_ops *ops, X = wirelen; continue; + case BPF_LD|BPF_W|BPF_RND: + A = arc4random(); + continue; + case BPF_LD|BPF_W|BPF_IND: k = X + pc->k; A = ops->ldw(pkt, k, &err); @@ -414,6 +418,7 @@ bpf_validate(struct bpf_insn *f, int len) return 0; break; case BPF_LEN: + case BPF_RND: break; default: return 0; |