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| author |   tb <tb@openbsd.org> | 2020-09-30 19:25:40 +0000 |
|---|---|---|
| committer | tb <tb@openbsd.org> | 2020-09-30 19:25:40 +0000 |
| commit | e809f14181b744b2284f1e751d854ad2c6567e4c (patch) | |
| tree | 86ca7bb9d4bd5767fccf1d54f2e028003fa88673 | |
| parent | We have no if_attachtail() function so remove the declaration. (diff) | |
| download | wireguard-openbsd-e809f14181b744b2284f1e751d854ad2c6567e4c.tar.xz wireguard-openbsd-e809f14181b744b2284f1e751d854ad2c6567e4c.zip | |
Document BPF_RND. Missed part of the xBPF commit (bpf_filter.c -r1.34).
from dlg, ok kn tb jmatthew
| -rw-r--r-- | share/man/man4/bpf.4 | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/share/man/man4/bpf.4 b/share/man/man4/bpf.4 index 55856ced4ff..58538f5f3e3 100644 --- a/share/man/man4/bpf.4 +++ b/share/man/man4/bpf.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: bpf.4,v 1.42 2020/09/30 15:47:36 deraadt Exp $ +.\" $OpenBSD: bpf.4,v 1.43 2020/09/30 19:25:40 tb Exp $ .\" $NetBSD: bpf.4,v 1.7 1995/09/27 18:31:50 thorpej Exp $ .\" .\" Copyright (c) 1990 The Regents of the University of California. @@ -614,6 +614,8 @@ packet data at a variable offset .Pf ( Dv BPF_IND ) , the packet length .Pf ( Dv BPF_LEN ) , +a random number +.Pf ( Dv BPF_RND ) , or a word in the scratch memory store .Pf ( Dv BPF_MEM ) . For @@ -674,6 +676,12 @@ A <- P[X+k:1] .Sm on A <- len .Sm off +.It Xo Dv BPF_LD No + Dv BPF_W No + +.Dv BPF_RND +.Xc +.Sm on +A <- arc4random() +.Sm off .It Dv BPF_LD No + Dv BPF_IMM .Sm on A <- k @@ -1049,7 +1057,8 @@ request is too large to be represented by an .Xr select 2 , .Xr signal 3 , .Xr MAKEDEV 8 , -.Xr tcpdump 8 +.Xr tcpdump 8 , +.Xr arc4random 9 .Rs .%A McCanne, S. .%A Jacobson, V. |