summaryrefslogtreecommitdiff
path: root/samples/bpf/tcbpf2_kern.c
diff options
context:
space:
mode:
Diffstat (limited to 'samples/bpf/tcbpf2_kern.c')
-rw-r--r--samples/bpf/tcbpf2_kern.c612
1 files changed, 0 insertions, 612 deletions
diff --git a/samples/bpf/tcbpf2_kern.c b/samples/bpf/tcbpf2_kern.c
deleted file mode 100644
index fa260c750fb1..000000000000
--- a/samples/bpf/tcbpf2_kern.c
+++ /dev/null
@@ -1,612 +0,0 @@
-/* Copyright (c) 2016 VMware
- * Copyright (c) 2016 Facebook
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- */
-#define KBUILD_MODNAME "foo"
-#include <uapi/linux/bpf.h>
-#include <uapi/linux/if_ether.h>
-#include <uapi/linux/if_packet.h>
-#include <uapi/linux/ip.h>
-#include <uapi/linux/ipv6.h>
-#include <uapi/linux/in.h>
-#include <uapi/linux/tcp.h>
-#include <uapi/linux/filter.h>
-#include <uapi/linux/pkt_cls.h>
-#include <uapi/linux/erspan.h>
-#include <net/ipv6.h>
-#include "bpf_helpers.h"
-#include "bpf_endian.h"
-
-#define _htonl __builtin_bswap32
-#define ERROR(ret) do {\
- char fmt[] = "ERROR line:%d ret:%d\n";\
- bpf_trace_printk(fmt, sizeof(fmt), __LINE__, ret); \
- } while(0)
-
-struct geneve_opt {
- __be16 opt_class;
- u8 type;
- u8 length:5;
- u8 r3:1;
- u8 r2:1;
- u8 r1:1;
- u8 opt_data[8]; /* hard-coded to 8 byte */
-};
-
-struct vxlan_metadata {
- u32 gbp;
-};
-
-SEC("gre_set_tunnel")
-int _gre_set_tunnel(struct __sk_buff *skb)
-{
- int ret;
- struct bpf_tunnel_key key;
-
- __builtin_memset(&key, 0x0, sizeof(key));
- key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
- key.tunnel_id = 2;
- key.tunnel_tos = 0;
- key.tunnel_ttl = 64;
-
- ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
- BPF_F_ZERO_CSUM_TX | BPF_F_SEQ_NUMBER);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- return TC_ACT_OK;
-}
-
-SEC("gre_get_tunnel")
-int _gre_get_tunnel(struct __sk_buff *skb)
-{
- int ret;
- struct bpf_tunnel_key key;
- char fmt[] = "key %d remote ip 0x%x\n";
-
- ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- bpf_trace_printk(fmt, sizeof(fmt), key.tunnel_id, key.remote_ipv4);
- return TC_ACT_OK;
-}
-
-SEC("ip6gretap_set_tunnel")
-int _ip6gretap_set_tunnel(struct __sk_buff *skb)
-{
- struct bpf_tunnel_key key;
- int ret;
-
- __builtin_memset(&key, 0x0, sizeof(key));
- key.remote_ipv6[3] = _htonl(0x11); /* ::11 */
- key.tunnel_id = 2;
- key.tunnel_tos = 0;
- key.tunnel_ttl = 64;
- key.tunnel_label = 0xabcde;
-
- ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
- BPF_F_TUNINFO_IPV6 | BPF_F_ZERO_CSUM_TX |
- BPF_F_SEQ_NUMBER);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- return TC_ACT_OK;
-}
-
-SEC("ip6gretap_get_tunnel")
-int _ip6gretap_get_tunnel(struct __sk_buff *skb)
-{
- char fmt[] = "key %d remote ip6 ::%x label %x\n";
- struct bpf_tunnel_key key;
- int ret;
-
- ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key),
- BPF_F_TUNINFO_IPV6);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- bpf_trace_printk(fmt, sizeof(fmt),
- key.tunnel_id, key.remote_ipv6[3], key.tunnel_label);
-
- return TC_ACT_OK;
-}
-
-SEC("erspan_set_tunnel")
-int _erspan_set_tunnel(struct __sk_buff *skb)
-{
- struct bpf_tunnel_key key;
- struct erspan_metadata md;
- int ret;
-
- __builtin_memset(&key, 0x0, sizeof(key));
- key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
- key.tunnel_id = 2;
- key.tunnel_tos = 0;
- key.tunnel_ttl = 64;
-
- ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), BPF_F_ZERO_CSUM_TX);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- __builtin_memset(&md, 0, sizeof(md));
-#ifdef ERSPAN_V1
- md.version = 1;
- md.u.index = bpf_htonl(123);
-#else
- u8 direction = 1;
- u8 hwid = 7;
-
- md.version = 2;
- md.u.md2.dir = direction;
- md.u.md2.hwid = hwid & 0xf;
- md.u.md2.hwid_upper = (hwid >> 4) & 0x3;
-#endif
-
- ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- return TC_ACT_OK;
-}
-
-SEC("erspan_get_tunnel")
-int _erspan_get_tunnel(struct __sk_buff *skb)
-{
- char fmt[] = "key %d remote ip 0x%x erspan version %d\n";
- struct bpf_tunnel_key key;
- struct erspan_metadata md;
- u32 index;
- int ret;
-
- ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- bpf_trace_printk(fmt, sizeof(fmt),
- key.tunnel_id, key.remote_ipv4, md.version);
-
-#ifdef ERSPAN_V1
- char fmt2[] = "\tindex %x\n";
-
- index = bpf_ntohl(md.u.index);
- bpf_trace_printk(fmt2, sizeof(fmt2), index);
-#else
- char fmt2[] = "\tdirection %d hwid %x timestamp %u\n";
-
- bpf_trace_printk(fmt2, sizeof(fmt2),
- md.u.md2.dir,
- (md.u.md2.hwid_upper << 4) + md.u.md2.hwid,
- bpf_ntohl(md.u.md2.timestamp));
-#endif
-
- return TC_ACT_OK;
-}
-
-SEC("ip4ip6erspan_set_tunnel")
-int _ip4ip6erspan_set_tunnel(struct __sk_buff *skb)
-{
- struct bpf_tunnel_key key;
- struct erspan_metadata md;
- int ret;
-
- __builtin_memset(&key, 0x0, sizeof(key));
- key.remote_ipv6[3] = _htonl(0x11);
- key.tunnel_id = 2;
- key.tunnel_tos = 0;
- key.tunnel_ttl = 64;
-
- ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key),
- BPF_F_TUNINFO_IPV6);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- __builtin_memset(&md, 0, sizeof(md));
-
-#ifdef ERSPAN_V1
- md.u.index = htonl(123);
- md.version = 1;
-#else
- u8 direction = 0;
- u8 hwid = 17;
-
- md.version = 2;
- md.u.md2.dir = direction;
- md.u.md2.hwid = hwid & 0xf;
- md.u.md2.hwid_upper = (hwid >> 4) & 0x3;
-#endif
-
- ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- return TC_ACT_OK;
-}
-
-SEC("ip4ip6erspan_get_tunnel")
-int _ip4ip6erspan_get_tunnel(struct __sk_buff *skb)
-{
- char fmt[] = "ip6erspan get key %d remote ip6 ::%x erspan version %d\n";
- struct bpf_tunnel_key key;
- struct erspan_metadata md;
- u32 index;
- int ret;
-
- ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), BPF_F_TUNINFO_IPV6);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- bpf_trace_printk(fmt, sizeof(fmt),
- key.tunnel_id, key.remote_ipv4, md.version);
-
-#ifdef ERSPAN_V1
- char fmt2[] = "\tindex %x\n";
-
- index = bpf_ntohl(md.u.index);
- bpf_trace_printk(fmt2, sizeof(fmt2), index);
-#else
- char fmt2[] = "\tdirection %d hwid %x timestamp %u\n";
-
- bpf_trace_printk(fmt2, sizeof(fmt2),
- md.u.md2.dir,
- (md.u.md2.hwid_upper << 4) + md.u.md2.hwid,
- bpf_ntohl(md.u.md2.timestamp));
-#endif
-
- return TC_ACT_OK;
-}
-
-SEC("vxlan_set_tunnel")
-int _vxlan_set_tunnel(struct __sk_buff *skb)
-{
- int ret;
- struct bpf_tunnel_key key;
- struct vxlan_metadata md;
-
- __builtin_memset(&key, 0x0, sizeof(key));
- key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
- key.tunnel_id = 2;
- key.tunnel_tos = 0;
- key.tunnel_ttl = 64;
-
- ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), BPF_F_ZERO_CSUM_TX);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- md.gbp = 0x800FF; /* Set VXLAN Group Policy extension */
- ret = bpf_skb_set_tunnel_opt(skb, &md, sizeof(md));
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- return TC_ACT_OK;
-}
-
-SEC("vxlan_get_tunnel")
-int _vxlan_get_tunnel(struct __sk_buff *skb)
-{
- int ret;
- struct bpf_tunnel_key key;
- struct vxlan_metadata md;
- char fmt[] = "key %d remote ip 0x%x vxlan gbp 0x%x\n";
-
- ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- ret = bpf_skb_get_tunnel_opt(skb, &md, sizeof(md));
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- bpf_trace_printk(fmt, sizeof(fmt),
- key.tunnel_id, key.remote_ipv4, md.gbp);
-
- return TC_ACT_OK;
-}
-
-SEC("geneve_set_tunnel")
-int _geneve_set_tunnel(struct __sk_buff *skb)
-{
- int ret, ret2;
- struct bpf_tunnel_key key;
- struct geneve_opt gopt;
-
- __builtin_memset(&key, 0x0, sizeof(key));
- key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
- key.tunnel_id = 2;
- key.tunnel_tos = 0;
- key.tunnel_ttl = 64;
-
- __builtin_memset(&gopt, 0x0, sizeof(gopt));
- gopt.opt_class = 0x102; /* Open Virtual Networking (OVN) */
- gopt.type = 0x08;
- gopt.r1 = 0;
- gopt.r2 = 0;
- gopt.r3 = 0;
- gopt.length = 2; /* 4-byte multiple */
- *(int *) &gopt.opt_data = 0xdeadbeef;
-
- ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), BPF_F_ZERO_CSUM_TX);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- ret = bpf_skb_set_tunnel_opt(skb, &gopt, sizeof(gopt));
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- return TC_ACT_OK;
-}
-
-SEC("geneve_get_tunnel")
-int _geneve_get_tunnel(struct __sk_buff *skb)
-{
- int ret;
- struct bpf_tunnel_key key;
- struct geneve_opt gopt;
- char fmt[] = "key %d remote ip 0x%x geneve class 0x%x\n";
-
- ret = bpf_skb_get_tunnel_key(skb, &key, sizeof(key), 0);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- ret = bpf_skb_get_tunnel_opt(skb, &gopt, sizeof(gopt));
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- bpf_trace_printk(fmt, sizeof(fmt),
- key.tunnel_id, key.remote_ipv4, gopt.opt_class);
- return TC_ACT_OK;
-}
-
-SEC("ipip_set_tunnel")
-int _ipip_set_tunnel(struct __sk_buff *skb)
-{
- struct bpf_tunnel_key key = {};
- void *data = (void *)(long)skb->data;
- struct iphdr *iph = data;
- struct tcphdr *tcp = data + sizeof(*iph);
- void *data_end = (void *)(long)skb->data_end;
- int ret;
-
- /* single length check */
- if (data + sizeof(*iph) + sizeof(*tcp) > data_end) {
- ERROR(1);
- return TC_ACT_SHOT;
- }
-
- key.tunnel_ttl = 64;
- if (iph->protocol == IPPROTO_ICMP) {
- key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
- } else {
- if (iph->protocol != IPPROTO_TCP || iph->ihl != 5)
- return TC_ACT_SHOT;
-
- if (tcp->dest == htons(5200))
- key.remote_ipv4 = 0xac100164; /* 172.16.1.100 */
- else if (tcp->dest == htons(5201))
- key.remote_ipv4 = 0xac100165; /* 172.16.1.101 */
- else
- return TC_ACT_SHOT;
- }
-
- ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), 0);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- return TC_ACT_OK;
-}
-
-SEC("ipip_get_tunnel")
-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);
- return TC_ACT_SHOT;
- }
-
- bpf_trace_printk(fmt, sizeof(fmt), key.remote_ipv4);
- return TC_ACT_OK;
-}
-
-SEC("ipip6_set_tunnel")
-int _ipip6_set_tunnel(struct __sk_buff *skb)
-{
- struct bpf_tunnel_key key = {};
- void *data = (void *)(long)skb->data;
- struct iphdr *iph = data;
- struct tcphdr *tcp = data + sizeof(*iph);
- void *data_end = (void *)(long)skb->data_end;
- int ret;
-
- /* single length check */
- if (data + sizeof(*iph) + sizeof(*tcp) > data_end) {
- ERROR(1);
- return TC_ACT_SHOT;
- }
-
- key.remote_ipv6[0] = _htonl(0x2401db00);
- key.tunnel_ttl = 64;
-
- if (iph->protocol == IPPROTO_ICMP) {
- key.remote_ipv6[3] = _htonl(1);
- } else {
- if (iph->protocol != IPPROTO_TCP || iph->ihl != 5) {
- ERROR(iph->protocol);
- return TC_ACT_SHOT;
- }
-
- if (tcp->dest == htons(5200)) {
- key.remote_ipv6[3] = _htonl(1);
- } else if (tcp->dest == htons(5201)) {
- key.remote_ipv6[3] = _htonl(2);
- } else {
- ERROR(tcp->dest);
- return TC_ACT_SHOT;
- }
- }
-
- ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), BPF_F_TUNINFO_IPV6);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- return TC_ACT_OK;
-}
-
-SEC("ipip6_get_tunnel")
-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);
- return TC_ACT_SHOT;
- }
-
- bpf_trace_printk(fmt, sizeof(fmt), _htonl(key.remote_ipv6[0]),
- _htonl(key.remote_ipv6[3]));
- return TC_ACT_OK;
-}
-
-SEC("ip6ip6_set_tunnel")
-int _ip6ip6_set_tunnel(struct __sk_buff *skb)
-{
- struct bpf_tunnel_key key = {};
- void *data = (void *)(long)skb->data;
- struct ipv6hdr *iph = data;
- struct tcphdr *tcp = data + sizeof(*iph);
- void *data_end = (void *)(long)skb->data_end;
- int ret;
-
- /* single length check */
- if (data + sizeof(*iph) + sizeof(*tcp) > data_end) {
- ERROR(1);
- return TC_ACT_SHOT;
- }
-
- key.remote_ipv6[0] = _htonl(0x2401db00);
- key.tunnel_ttl = 64;
-
- if (iph->nexthdr == NEXTHDR_ICMP) {
- key.remote_ipv6[3] = _htonl(1);
- } else {
- if (iph->nexthdr != NEXTHDR_TCP) {
- ERROR(iph->nexthdr);
- return TC_ACT_SHOT;
- }
-
- if (tcp->dest == htons(5200)) {
- key.remote_ipv6[3] = _htonl(1);
- } else if (tcp->dest == htons(5201)) {
- key.remote_ipv6[3] = _htonl(2);
- } else {
- ERROR(tcp->dest);
- return TC_ACT_SHOT;
- }
- }
-
- ret = bpf_skb_set_tunnel_key(skb, &key, sizeof(key), BPF_F_TUNINFO_IPV6);
- if (ret < 0) {
- ERROR(ret);
- return TC_ACT_SHOT;
- }
-
- return TC_ACT_OK;
-}
-
-SEC("ip6ip6_get_tunnel")
-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);
- return TC_ACT_SHOT;
- }
-
- bpf_trace_printk(fmt, sizeof(fmt), _htonl(key.remote_ipv6[0]),
- _htonl(key.remote_ipv6[3]));
- return TC_ACT_OK;
-}
-
-SEC("xfrm_get_state")
-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));
- return TC_ACT_OK;
-}
-
-char _license[] SEC("license") = "GPL";
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-17 01:25:37 +0000