diff options
Diffstat (limited to 'share/man/man4/ng_patch.4')
| -rw-r--r-- | share/man/man4/ng_patch.4 | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/share/man/man4/ng_patch.4 b/share/man/man4/ng_patch.4 index 7a8543fd7dd8..9c0d7a8ee512 100644 --- a/share/man/man4/ng_patch.4 +++ b/share/man/man4/ng_patch.4 @@ -80,7 +80,7 @@ Sets the data link type on the .Va in hook (to help calculate relative offset). Currently, supported types are .Cm DLT_RAW -(raw IP datagrams , no offset applied, the default) and +(raw IP datagrams, no offset applied, the default) and .Cm DLT_EN10MB (Ethernet). DLT_ definitions can be found in .In net/bpf.h . @@ -135,6 +135,17 @@ corresponding checksum before transmitting packet on output interface. The .Nm node does not do any checksum correction by itself. +.Pp +The +.Va offset +value for the +.Vt ng_patch_op +structure is calculated from zero by default (the first byte of +packet headers). +If +.Va relative_offset +is enabled (set to 1) during configuration, the operation will have an +additional amount added to the offset based on the data link type. .It Dv NGM_PATCH_GETCONFIG Pq Ic getconfig This control message returns the current set of modify operations, in the form of a |