Module Name: src
Committed By: rin
Date: Wed Dec 12 02:26:40 UTC 2018
Modified Files:
src/share/man/man4: shmif.4
Log Message:
Document capability of TX/RX offload and environment variable
RUMP_SHMIF_CAPENABLE. Bump date.
part of PR kern/53562
To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.5 src/share/man/man4/shmif.4
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/shmif.4
diff -u src/share/man/man4/shmif.4:1.4 src/share/man/man4/shmif.4:1.5
--- src/share/man/man4/shmif.4:1.4 Mon Oct 19 14:33:11 2015
+++ src/share/man/man4/shmif.4 Wed Dec 12 02:26:40 2018
@@ -1,4 +1,4 @@
-.\" $NetBSD: shmif.4,v 1.4 2015/10/19 14:33:11 pooka Exp $
+.\" $NetBSD: shmif.4,v 1.5 2018/12/12 02:26:40 rin Exp $
.\"
.\" Copyright (c) 2010 Antti Kantee
.\" All rights reserved.
@@ -23,7 +23,7 @@
.\" INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
-.Dd November 17, 2010
+.Dd December 12, 2018
.Dt SHMIF 4
.Os
.Sh NAME
@@ -90,6 +90,30 @@ Destroying an
interface is possible only via
.Xr ifconfig 8
.Em destroy .
+.Pp
+An
+.Nm
+interface emulates TX/RX offload options in software.
+They are specified by
+.Xr ifconfig 8 .
+Alternatively, its
+.Em if_capenable
+flag is directly specified by
+environment variable
+.Ev RUMP_SHMIF_CAPENABLE ,
+for example:
+.Bl -tag -width 0xfffff
+.It Ar 0x7ff80
+for all TX/RX offload
+.It Ar 0x6aa80
+for all TX offload
+.It Ar 0x15500
+for all RX offload
+.El
+.Pp
+See
+.Pa /usr/include/net/if.h
+for more details.
.Sh SEE ALSO
.Xr rump 3 ,
.Xr virt 4 ,
