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authorVadim Kochan <vadim4j@gmail.com>2017-02-06 18:23:11 +0200
committerTobias Klauser <tklauser@distanz.ch>2017-02-06 17:43:36 +0100
commit506e22f6feb39d793434b473b60c8a20ccd12995 (patch)
treeed0576c16270aad71a506b9ae5a6b469430a7807 /trafgen_l3.c
parent8fd19eefa46b313673d6ba2a0194a68674ef5ea9 (diff)
trafgen: l3: Make possible to send frames via tun device
tun interface does not have Ethernet header so lets push Ethernet header only if device supports this. Signed-off-by: Vadim Kochan <vadim4j@gmail.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'trafgen_l3.c')
-rw-r--r--trafgen_l3.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/trafgen_l3.c b/trafgen_l3.c
index 70aefb9..7c8a786 100644
--- a/trafgen_l3.c
+++ b/trafgen_l3.c
@@ -3,9 +3,10 @@
* Subject to the GPL, version 2.
*/
-#include <linux/if_ether.h>
+#include <net/if_arp.h>
#include "die.h"
+#include "dev.h"
#include "csum.h"
#include "built_in.h"
#include "trafgen_l2.h"
@@ -34,7 +35,11 @@ static struct proto_field ipv4_fields[] = {
static void ipv4_header_init(struct proto_hdr *hdr)
{
- proto_lower_default_add(hdr, PROTO_ETH);
+ const char *dev = proto_dev_get();
+
+ /* In case of tun interface we do not need to create Ethernet header */
+ if (dev && device_mtu(dev) && device_type(dev) != ARPHRD_NONE)
+ proto_lower_default_add(hdr, PROTO_ETH);
proto_header_fields_add(hdr, ipv4_fields, array_size(ipv4_fields));
@@ -135,7 +140,11 @@ static struct proto_field ipv6_fields[] = {
static void ipv6_header_init(struct proto_hdr *hdr)
{
- proto_lower_default_add(hdr, PROTO_ETH);
+ const char *dev = proto_dev_get();
+
+ /* In case of tun interface we do not need to create Ethernet header */
+ if (dev && device_mtu(dev) && device_type(dev) != ARPHRD_NONE)
+ proto_lower_default_add(hdr, PROTO_ETH);
proto_header_fields_add(hdr, ipv6_fields, array_size(ipv6_fields));