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selftests/bpf: Replace bpf_trace_printk in tunnel kernel code
Replace bpf_trace_printk with bpf_printk in test_tunnel_kern.c. function bpf_printk is more easier and useful than bpf_trace_printk. Signed-off-by: Kaixi Fan <fankaixi.li@bytedance.com> Link: https://lore.kernel.org/r/20220430074844.69214-4-fankaixi.li@bytedance.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Kaixi Fan
Alexei Starovoitov
parent
1ee7efd40a
commit
71b2ec21c3
1 changed files with 72 additions and 97 deletions
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@ -21,10 +21,7 @@
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_endian.h>
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#define ERROR(ret) do {\
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char fmt[] = "ERROR line:%d ret:%d\n";\
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bpf_trace_printk(fmt, sizeof(fmt), __LINE__, ret); \
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} while (0)
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#define log_err(__ret) bpf_printk("ERROR line:%d ret:%d\n", __LINE__, __ret)
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struct geneve_opt {
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__be16 opt_class;
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@ -47,7 +44,6 @@ struct {
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__type(value, __u32);
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} local_ip_map SEC(".maps");
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SEC("tc")
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int gre_set_tunnel(struct __sk_buff *skb)
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{
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@ -63,7 +59,7 @@ int gre_set_tunnel(struct __sk_buff *skb)
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ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
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BPF_F_ZERO_CSUM_TX | BPF_F_SEQ_NUMBER);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -75,15 +71,14 @@ int gre_get_tunnel(struct __sk_buff *skb)
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{
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int ret;
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struct bpf_tunnel_key key;
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char fmt[] = "key %d remote ip 0x%x\n";
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ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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bpf_trace_printk(fmt, sizeof(fmt), key.tunnel_id, key.remote_ipv4);
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bpf_printk("key %d remote ip 0x%x\n", key.tunnel_id, key.remote_ipv4);
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return TC_ACT_OK;
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}
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@ -104,7 +99,7 @@ int ip6gretap_set_tunnel(struct __sk_buff *skb)
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BPF_F_TUNINFO_IPV6 | BPF_F_ZERO_CSUM_TX |
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BPF_F_SEQ_NUMBER);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -114,19 +109,18 @@ int ip6gretap_set_tunnel(struct __sk_buff *skb)
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SEC("tc")
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int ip6gretap_get_tunnel(struct __sk_buff *skb)
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{
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char fmt[] = "key %d remote ip6 ::%x label %x\n";
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struct bpf_tunnel_key key;
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int ret;
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ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
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BPF_F_TUNINFO_IPV6);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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bpf_trace_printk(fmt, sizeof(fmt),
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key.tunnel_id, key.remote_ipv6[3], key.tunnel_label);
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bpf_printk("key %d remote ip6 ::%x label %x\n",
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key.tunnel_id, key.remote_ipv6[3], key.tunnel_label);
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return TC_ACT_OK;
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}
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@ -147,7 +141,7 @@ int erspan_set_tunnel(struct __sk_buff *skb)
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ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
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BPF_F_ZERO_CSUM_TX);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -167,7 +161,7 @@ int erspan_set_tunnel(struct __sk_buff *skb)
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ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -177,7 +171,6 @@ int erspan_set_tunnel(struct __sk_buff *skb)
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SEC("tc")
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int erspan_get_tunnel(struct __sk_buff *skb)
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{
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char fmt[] = "key %d remote ip 0x%x erspan version %d\n";
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struct bpf_tunnel_key key;
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struct erspan_metadata md;
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__u32 index;
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@ -185,31 +178,27 @@ int erspan_get_tunnel(struct __sk_buff *skb)
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ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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bpf_trace_printk(fmt, sizeof(fmt),
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key.tunnel_id, key.remote_ipv4, md.version);
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bpf_printk("key %d remote ip 0x%x erspan version %d\n",
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key.tunnel_id, key.remote_ipv4, md.version);
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#ifdef ERSPAN_V1
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char fmt2[] = "\tindex %x\n";
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index = bpf_ntohl(md.u.index);
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bpf_trace_printk(fmt2, sizeof(fmt2), index);
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bpf_printk("\tindex %x\n", index);
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#else
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char fmt2[] = "\tdirection %d hwid %x timestamp %u\n";
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bpf_trace_printk(fmt2, sizeof(fmt2),
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md.u.md2.dir,
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(md.u.md2.hwid_upper << 4) + md.u.md2.hwid,
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bpf_ntohl(md.u.md2.timestamp));
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bpf_printk("\tdirection %d hwid %x timestamp %u\n",
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md.u.md2.dir,
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(md.u.md2.hwid_upper << 4) + md.u.md2.hwid,
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bpf_ntohl(md.u.md2.timestamp));
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#endif
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return TC_ACT_OK;
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@ -231,7 +220,7 @@ int ip4ip6erspan_set_tunnel(struct __sk_buff *skb)
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ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
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BPF_F_TUNINFO_IPV6);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -252,7 +241,7 @@ int ip4ip6erspan_set_tunnel(struct __sk_buff *skb)
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ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -262,7 +251,6 @@ int ip4ip6erspan_set_tunnel(struct __sk_buff *skb)
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SEC("tc")
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int ip4ip6erspan_get_tunnel(struct __sk_buff *skb)
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{
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char fmt[] = "ip6erspan get key %d remote ip6 ::%x erspan version %d\n";
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struct bpf_tunnel_key key;
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struct erspan_metadata md;
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__u32 index;
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@ -271,31 +259,27 @@ int ip4ip6erspan_get_tunnel(struct __sk_buff *skb)
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ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
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BPF_F_TUNINFO_IPV6);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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bpf_trace_printk(fmt, sizeof(fmt),
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key.tunnel_id, key.remote_ipv4, md.version);
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bpf_printk("ip6erspan get key %d remote ip6 ::%x erspan version %d\n",
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key.tunnel_id, key.remote_ipv4, md.version);
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#ifdef ERSPAN_V1
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char fmt2[] = "\tindex %x\n";
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index = bpf_ntohl(md.u.index);
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bpf_trace_printk(fmt2, sizeof(fmt2), index);
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bpf_printk("\tindex %x\n", index);
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#else
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char fmt2[] = "\tdirection %d hwid %x timestamp %u\n";
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bpf_trace_printk(fmt2, sizeof(fmt2),
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md.u.md2.dir,
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(md.u.md2.hwid_upper << 4) + md.u.md2.hwid,
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bpf_ntohl(md.u.md2.timestamp));
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bpf_printk("\tdirection %d hwid %x timestamp %u\n",
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md.u.md2.dir,
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(md.u.md2.hwid_upper << 4) + md.u.md2.hwid,
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bpf_ntohl(md.u.md2.timestamp));
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#endif
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return TC_ACT_OK;
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@ -351,7 +335,7 @@ int vxlan_set_tunnel_src(struct __sk_buff *skb)
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local_ip = bpf_map_lookup_elem(&local_ip_map, &index);
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if (!local_ip) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -365,14 +349,14 @@ int vxlan_set_tunnel_src(struct __sk_buff *skb)
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ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
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BPF_F_ZERO_CSUM_TX);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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md.gbp = 0x800FF; /* Set VXLAN Group Policy extension */
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ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -385,26 +369,24 @@ int vxlan_get_tunnel_src(struct __sk_buff *skb)
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int ret;
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struct bpf_tunnel_key key;
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struct vxlan_metadata md;
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char fmt[] = "key %d remote ip 0x%x vxlan gbp 0x%x\n";
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char fmt2[] = "local ip 0x%x\n";
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__u32 index = 0;
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__u32 *local_ip = NULL;
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local_ip = bpf_map_lookup_elem(&local_ip_map, &index);
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if (!local_ip) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -461,7 +443,7 @@ int ip6vxlan_set_tunnel_src(struct __sk_buff *skb)
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local_ip = bpf_map_lookup_elem(&local_ip_map, &index);
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if (!local_ip) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -475,7 +457,7 @@ int ip6vxlan_set_tunnel_src(struct __sk_buff *skb)
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ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
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BPF_F_TUNINFO_IPV6);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -485,8 +467,6 @@ int ip6vxlan_set_tunnel_src(struct __sk_buff *skb)
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SEC("tc")
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int ip6vxlan_get_tunnel_src(struct __sk_buff *skb)
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{
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char fmt[] = "key %d remote ip6 ::%x label %x\n";
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char fmt2[] = "local ip6 ::%x\n";
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struct bpf_tunnel_key key;
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int ret;
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__u32 index = 0;
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@ -494,23 +474,23 @@ int ip6vxlan_get_tunnel_src(struct __sk_buff *skb)
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local_ip = bpf_map_lookup_elem(&local_ip_map, &index);
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if (!local_ip) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
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BPF_F_TUNINFO_IPV6);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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if (bpf_ntohl(key.local_ipv6[3]) != *local_ip) {
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bpf_trace_printk(fmt, sizeof(fmt),
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key.tunnel_id,
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key.remote_ipv6[3], key.tunnel_label);
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bpf_trace_printk(fmt2, sizeof(fmt2), key.local_ipv6[3]);
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ERROR(ret);
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bpf_printk("ip6vxlan key %d local ip6 ::%x remote ip6 ::%x label 0x%x\n",
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key.tunnel_id, bpf_ntohl(key.local_ipv6[3]),
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bpf_ntohl(key.remote_ipv6[3]), key.tunnel_label);
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bpf_printk("local_ip 0x%x\n", *local_ip);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -542,13 +522,13 @@ int geneve_set_tunnel(struct __sk_buff *skb)
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ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
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BPF_F_ZERO_CSUM_TX);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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ret = bpf_skb_set_tunnel_opt(skb, &gopt, sizeof(gopt));
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -561,11 +541,10 @@ int geneve_get_tunnel(struct __sk_buff *skb)
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int ret;
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struct bpf_tunnel_key key;
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struct geneve_opt gopt;
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char fmt[] = "key %d remote ip 0x%x geneve class 0x%x\n";
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ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -573,8 +552,8 @@ int geneve_get_tunnel(struct __sk_buff *skb)
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if (ret < 0)
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gopt.opt_class = 0;
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bpf_trace_printk(fmt, sizeof(fmt),
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key.tunnel_id, key.remote_ipv4, gopt.opt_class);
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bpf_printk("key %d remote ip 0x%x geneve class 0x%x\n",
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key.tunnel_id, key.remote_ipv4, gopt.opt_class);
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return TC_ACT_OK;
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}
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@ -594,7 +573,7 @@ int ip6geneve_set_tunnel(struct __sk_buff *skb)
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ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
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BPF_F_TUNINFO_IPV6);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -609,7 +588,7 @@ int ip6geneve_set_tunnel(struct __sk_buff *skb)
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ret = bpf_skb_set_tunnel_opt(skb, &gopt, sizeof(gopt));
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -619,7 +598,6 @@ int ip6geneve_set_tunnel(struct __sk_buff *skb)
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SEC("tc")
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int ip6geneve_get_tunnel(struct __sk_buff *skb)
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{
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char fmt[] = "key %d remote ip 0x%x geneve class 0x%x\n";
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struct bpf_tunnel_key key;
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struct geneve_opt gopt;
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int ret;
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@ -627,7 +605,7 @@ int ip6geneve_get_tunnel(struct __sk_buff *skb)
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ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
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BPF_F_TUNINFO_IPV6);
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if (ret < 0) {
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ERROR(ret);
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log_err(ret);
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return TC_ACT_SHOT;
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}
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@ -635,8 +613,8 @@ int ip6geneve_get_tunnel(struct __sk_buff *skb)
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if (ret < 0)
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gopt.opt_class = 0;
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bpf_trace_printk(fmt, sizeof(fmt),
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key.tunnel_id, key.remote_ipv4, gopt.opt_class);
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bpf_printk("key %d remote ip 0x%x geneve class 0x%x\n",
|
||||
key.tunnel_id, key.remote_ipv4, gopt.opt_class);
|
||||
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
|
@ -652,7 +630,7 @@ int ipip_set_tunnel(struct __sk_buff *skb)
|
|||
|
||||
/* single length check */
|
||||
if (data + sizeof(*iph) > data_end) {
|
||||
ERROR(1);
|
||||
log_err(1);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
|
|
@ -663,7 +641,7 @@ int ipip_set_tunnel(struct __sk_buff *skb)
|
|||
|
||||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), 0);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
log_err(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
|
|
@ -675,15 +653,14 @@ int ipip_get_tunnel(struct __sk_buff *skb)
|
|||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
char fmt[] = "remote ip 0x%x\n";
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
log_err(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt), key.remote_ipv4);
|
||||
bpf_printk("remote ip 0x%x\n", key.remote_ipv4);
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
|
|
@ -698,7 +675,7 @@ int ipip6_set_tunnel(struct __sk_buff *skb)
|
|||
|
||||
/* single length check */
|
||||
if (data + sizeof(*iph) > data_end) {
|
||||
ERROR(1);
|
||||
log_err(1);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
|
|
@ -711,7 +688,7 @@ int ipip6_set_tunnel(struct __sk_buff *skb)
|
|||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
log_err(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
|
|
@ -723,17 +700,16 @@ int ipip6_get_tunnel(struct __sk_buff *skb)
|
|||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
char fmt[] = "remote ip6 %x::%x\n";
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
log_err(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt), bpf_htonl(key.remote_ipv6[0]),
|
||||
bpf_htonl(key.remote_ipv6[3]));
|
||||
bpf_printk("remote ip6 %x::%x\n", bpf_htonl(key.remote_ipv6[0]),
|
||||
bpf_htonl(key.remote_ipv6[3]));
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
|
|
@ -748,7 +724,7 @@ int ip6ip6_set_tunnel(struct __sk_buff *skb)
|
|||
|
||||
/* single length check */
|
||||
if (data + sizeof(*iph) > data_end) {
|
||||
ERROR(1);
|
||||
log_err(1);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
|
|
@ -760,7 +736,7 @@ int ip6ip6_set_tunnel(struct __sk_buff *skb)
|
|||
ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
log_err(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
|
|
@ -772,17 +748,16 @@ int ip6ip6_get_tunnel(struct __sk_buff *skb)
|
|||
{
|
||||
int ret;
|
||||
struct bpf_tunnel_key key;
|
||||
char fmt[] = "remote ip6 %x::%x\n";
|
||||
|
||||
ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
|
||||
BPF_F_TUNINFO_IPV6);
|
||||
if (ret < 0) {
|
||||
ERROR(ret);
|
||||
log_err(ret);
|
||||
return TC_ACT_SHOT;
|
||||
}
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt), bpf_htonl(key.remote_ipv6[0]),
|
||||
bpf_htonl(key.remote_ipv6[3]));
|
||||
bpf_printk("remote ip6 %x::%x\n", bpf_htonl(key.remote_ipv6[0]),
|
||||
bpf_htonl(key.remote_ipv6[3]));
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
|
|
@ -790,15 +765,15 @@ SEC("tc")
|
|||
int xfrm_get_state(struct __sk_buff *skb)
|
||||
{
|
||||
struct bpf_xfrm_state x;
|
||||
char fmt[] = "reqid %d spi 0x%x remote ip 0x%x\n";
|
||||
int ret;
|
||||
|
||||
ret = bpf_skb_get_xfrm_state(skb, 0, &x, sizeof(x), 0);
|
||||
if (ret < 0)
|
||||
return TC_ACT_OK;
|
||||
|
||||
bpf_trace_printk(fmt, sizeof(fmt), x.reqid, bpf_ntohl(x.spi),
|
||||
bpf_ntohl(x.remote_ipv4));
|
||||
bpf_printk("reqid %d spi 0x%x remote ip 0x%x\n",
|
||||
x.reqid, bpf_ntohl(x.spi),
|
||||
bpf_ntohl(x.remote_ipv4));
|
||||
return TC_ACT_OK;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue