From: wenxu <we...@ucloud.cn>
ip l add dev tun type gretap external
ip r a 10.0.0.1 encap ip dst 192.168.152.171 id 1000 dev gretap
For gretap example when the command set the id but don't set the
TUNNEL_KEY flags. There is no key field in the send packet
Signed-off-by: wenxu <we...@ucloud.cn>
---
include/uapi/linux/if_tunnel.h | 6 ++++++
ip/iproute_lwtunnel.c | 11 ++++++++++-
2 files changed, 16 insertions(+), 1 deletions(-)
diff --git a/include/uapi/linux/if_tunnel.h b/include/uapi/linux/if_tunnel.h
index ecdc766..40b8009 100644
--- a/include/uapi/linux/if_tunnel.h
+++ b/include/uapi/linux/if_tunnel.h
@@ -160,4 +160,10 @@ enum {
};
#define IFLA_VTI_MAX (__IFLA_VTI_MAX - 1)
+
+#define TUNNEL_CSUM __cpu_to_be16(0x01)
+#define TUNNEL_KEY __cpu_to_be16(0x04)
+#define TUNNEL_SEQ __cpu_to_be16(0x08)
+#define TUNNEL_DONT_FRAGMENT __cpu_to_be16(0x0100)
+
#endif /* _IF_TUNNEL_H_ */
diff --git a/ip/iproute_lwtunnel.c b/ip/iproute_lwtunnel.c
index aee18ac..c659035 100644
--- a/ip/iproute_lwtunnel.c
+++ b/ip/iproute_lwtunnel.c
@@ -18,6 +18,7 @@
#include <string.h>
#include <linux/ila.h>
#include <linux/lwtunnel.h>
+#include <linux/if_tunnel.h>
#include <linux/mpls_iptunnel.h>
#include <errno.h>
@@ -31,7 +32,6 @@
#include <linux/seg6_iptunnel.h>
#include <linux/seg6_hmac.h>
#include <linux/seg6_local.h>
-#include <net/if.h>
static const char *format_encap_type(int type)
{
@@ -780,12 +780,14 @@ static int parse_encap_ip(struct rtattr *rta, size_t len,
char **argv = *argvp;
int argc = *argcp;
int ret = 0;
+ __u16 flags = 0;
while (argc > 0) {
if (strcmp(*argv, "id") == 0) {
__u64 id;
NEXT_ARG();
+ flags |= TUNNEL_KEY;
if (id_ok++)
duparg2("id", *argv);
if (get_be64(&id, *argv, 0))
@@ -835,6 +837,9 @@ static int parse_encap_ip(struct rtattr *rta, size_t len,
argc--; argv++;
}
+ if (flags)
+ ret = rta_addattr16(rta, len, LWTUNNEL_IP_FLAGS, flags);
+
/* argv is currently the first unparsed argument,
* but the lwt_parse_encap() caller will move to the next,
* so step back
@@ -930,12 +935,14 @@ static int parse_encap_ip6(struct rtattr *rta, size_t len,
char **argv = *argvp;
int argc = *argcp;
int ret = 0;
+ __u16 flags = 0;
while (argc > 0) {
if (strcmp(*argv, "id") == 0) {
__u64 id;
NEXT_ARG();
+ flags |= TUNNEL_KEY;
if (id_ok++)
duparg2("id", *argv);
if (get_be64(&id, *argv, 0))
@@ -987,6 +994,8 @@ static int parse_encap_ip6(struct rtattr *rta, size_t len,
argc--; argv++;
}
+ if (flags)
+ ret = rta_addattr16(rta, len, LWTUNNEL_IP_FLAGS, flags);
/* argv is currently the first unparsed argument,
* but the lwt_parse_encap() caller will move to the next,
* so step back
--
1.7.1
