diff options
| author | Vadim Kochan <vadim4j@gmail.com> | 2017-02-06 18:23:11 +0200 |
|---|---|---|
| committer | Tobias Klauser <tklauser@distanz.ch> | 2017-02-06 17:43:36 +0100 |
| commit | 506e22f6feb39d793434b473b60c8a20ccd12995 (patch) | |
| tree | ed0576c16270aad71a506b9ae5a6b469430a7807 /trafgen_l3.c | |
| parent | 8fd19eefa46b313673d6ba2a0194a68674ef5ea9 (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.c | 15 |
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)); |