From: Susant Sahani <ssahani@gmail.com>
Date: Tue, 14 Jul 2015 08:25:52 +0000 (+0530)
Subject: networkd: tap add support for vnet_hdr
X-Git-Tag: v226.4~1^2~210
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=ffd9a99e116775904762b688b2caabbc61e74c82

networkd: tap add support for vnet_hdr

 This patch adds support to configure IFF_VNET_HDR flag
for a tap device. It allows whether sending and receiving
large pass larger (GSO) packets. This greatly increases the
achievable throughput.
---

diff --git a/src/shared/virt.h b/src/shared/virt.h
index 7194ab2bf..29f8bb0ea 100644
--- a/src/shared/virt.h
+++ b/src/shared/virt.h
@@ -1,11 +1,9 @@
 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
 
-#pragma once
-
 /***
   This file is part of systemd.
 
-  Copyright 2011 Lennart Poettering
+  Copyright 2014 Tom Gundersen <teg@jklm.no>
 
   systemd is free software; you can redistribute it and/or modify it
   under the terms of the GNU Lesser General Public License as published by
@@ -21,15 +19,22 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-int detect_vm(const char **id);
-int detect_container(const char **id);
+#pragma once
+
+typedef struct TunTap TunTap;
+
+#include "networkd-netdev.h"
+
+struct TunTap {
+        NetDev meta;
 
-enum {
-        VIRTUALIZATION_NONE = 0,
-        VIRTUALIZATION_VM,
-        VIRTUALIZATION_CONTAINER,
-        _VIRTUALIZATION_MAX,
-        _VIRTUALIZATION_INVALID = -1
+        char *user_name;
+        char *group_name;
+        bool one_queue;
+        bool multi_queue;
+        bool packet_info;
+        bool vnet_hdr;
 };
 
-int detect_virtualization(const char **id);
+extern const NetDevVTable tun_vtable;
+extern const NetDevVTable tap_vtable;