github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-27 16:44:58 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

selftests/bpf: Amend test_tunnel to exercise BPF_F_TUNINFO_FLAGS

Browse Source 
Get the tunnel flags in {ipv6}vxlan_get_tunnel_src and ensure they are
aligned with tunnel params set at {ipv6}vxlan_set_tunnel_dst.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220831144010.174110-2-shmulik.ladkani@gmail.com
This commit is contained in:
Shmulik Ladkani 2022-08-31 17:40:10 +03:00 committed by Daniel Borkmann
parent 44c51472be
commit 8cc61b7a64
1 changed files with 16 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
tools/testing/selftests/bpf/progs/test_tunnel_kern.c
View File

@ -12,6 +12,7 @@
#include <linux/bpf.h>
#include <linux/if_ether.h>
#include <linux/if_packet.h>
#include <linux/if_tunnel.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/icmp.h>
@ -386,7 +387,8 @@ int vxlan_get_tunnel_src(struct __sk_buff *skb)
__u32 orig_daddr;
__u32 index = 0;
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
BPF_F_TUNINFO_FLAGS);
if (ret < 0) {
log_err(ret);
return TC_ACT_SHOT;
@ -398,10 +400,13 @@ int vxlan_get_tunnel_src(struct __sk_buff *skb)
return TC_ACT_SHOT;
}
if (key.local_ipv4 != ASSIGNED_ADDR_VETH1 || md.gbp != 0x800FF) {
bpf_printk("vxlan key %d local ip 0x%x remote ip 0x%x gbp 0x%x\n",
if (key.local_ipv4 != ASSIGNED_ADDR_VETH1 || md.gbp != 0x800FF ||
!(key.tunnel_flags & TUNNEL_KEY) ||
(key.tunnel_flags & TUNNEL_CSUM)) {
bpf_printk("vxlan key %d local ip 0x%x remote ip 0x%x gbp 0x%x flags 0x%x\n",
key.tunnel_id, key.local_ipv4,
key.remote_ipv4, md.gbp);
key.remote_ipv4, md.gbp,
bpf_ntohs(key.tunnel_flags));
log_err(ret);
return TC_ACT_SHOT;
}
@ -541,16 +546,19 @@ int ip6vxlan_get_tunnel_src(struct __sk_buff *skb)
}
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
BPF_F_TUNINFO_IPV6);
BPF_F_TUNINFO_IPV6 | BPF_F_TUNINFO_FLAGS);
if (ret < 0) {
log_err(ret);
return TC_ACT_SHOT;
}
if (bpf_ntohl(key.local_ipv6[3]) != *local_ip) {
bpf_printk("ip6vxlan key %d local ip6 ::%x remote ip6 ::%x label 0x%x\n",
if (bpf_ntohl(key.local_ipv6[3]) != *local_ip ||
!(key.tunnel_flags & TUNNEL_KEY) ||
!(key.tunnel_flags & TUNNEL_CSUM)) {
bpf_printk("ip6vxlan key %d local ip6 ::%x remote ip6 ::%x label 0x%x flags 0x%x\n",
key.tunnel_id, bpf_ntohl(key.local_ipv6[3]),
bpf_ntohl(key.remote_ipv6[3]), key.tunnel_label);
bpf_ntohl(key.remote_ipv6[3]), key.tunnel_label,
bpf_ntohs(key.tunnel_flags));
bpf_printk("local_ip 0x%x\n", *local_ip);
log_err(ret);
return TC_ACT_SHOT;