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-rw-r--r--samples/sockmap/sockmap_kern.c341
1 files changed, 0 insertions, 341 deletions
diff --git a/samples/sockmap/sockmap_kern.c b/samples/sockmap/sockmap_kern.c
deleted file mode 100644
index 9ff8bc5dc206..000000000000
--- a/samples/sockmap/sockmap_kern.c
+++ /dev/null
@@ -1,341 +0,0 @@
-/* Copyright (c) 2017 Covalent IO, Inc. http://covalent.io
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-#include <uapi/linux/bpf.h>
-#include <uapi/linux/if_ether.h>
-#include <uapi/linux/if_packet.h>
-#include <uapi/linux/ip.h>
-#include "../../tools/testing/selftests/bpf/bpf_helpers.h"
-#include "../../tools/testing/selftests/bpf/bpf_endian.h"
-
-/* Sockmap sample program connects a client and a backend together
- * using cgroups.
- *
- * client:X <---> frontend:80 client:X <---> backend:80
- *
- * For simplicity we hard code values here and bind 1:1. The hard
- * coded values are part of the setup in sockmap.sh script that
- * is associated with this BPF program.
- *
- * The bpf_printk is verbose and prints information as connections
- * are established and verdicts are decided.
- */
-
-#define bpf_printk(fmt, ...) \
-({ \
- char ____fmt[] = fmt; \
- bpf_trace_printk(____fmt, sizeof(____fmt), \
- ##__VA_ARGS__); \
-})
-
-struct bpf_map_def SEC("maps") sock_map = {
- .type = BPF_MAP_TYPE_SOCKMAP,
- .key_size = sizeof(int),
- .value_size = sizeof(int),
- .max_entries = 20,
-};
-
-struct bpf_map_def SEC("maps") sock_map_txmsg = {
- .type = BPF_MAP_TYPE_SOCKMAP,
- .key_size = sizeof(int),
- .value_size = sizeof(int),
- .max_entries = 20,
-};
-
-struct bpf_map_def SEC("maps") sock_map_redir = {
- .type = BPF_MAP_TYPE_SOCKMAP,
- .key_size = sizeof(int),
- .value_size = sizeof(int),
- .max_entries = 20,
-};
-
-struct bpf_map_def SEC("maps") sock_apply_bytes = {
- .type = BPF_MAP_TYPE_ARRAY,
- .key_size = sizeof(int),
- .value_size = sizeof(int),
- .max_entries = 1
-};
-
-struct bpf_map_def SEC("maps") sock_cork_bytes = {
- .type = BPF_MAP_TYPE_ARRAY,
- .key_size = sizeof(int),
- .value_size = sizeof(int),
- .max_entries = 1
-};
-
-struct bpf_map_def SEC("maps") sock_pull_bytes = {
- .type = BPF_MAP_TYPE_ARRAY,
- .key_size = sizeof(int),
- .value_size = sizeof(int),
- .max_entries = 2
-};
-
-struct bpf_map_def SEC("maps") sock_redir_flags = {
- .type = BPF_MAP_TYPE_ARRAY,
- .key_size = sizeof(int),
- .value_size = sizeof(int),
- .max_entries = 1
-};
-
-struct bpf_map_def SEC("maps") sock_skb_opts = {
- .type = BPF_MAP_TYPE_ARRAY,
- .key_size = sizeof(int),
- .value_size = sizeof(int),
- .max_entries = 1
-};
-
-SEC("sk_skb1")
-int bpf_prog1(struct __sk_buff *skb)
-{
- return skb->len;
-}
-
-SEC("sk_skb2")
-int bpf_prog2(struct __sk_buff *skb)
-{
- __u32 lport = skb->local_port;
- __u32 rport = skb->remote_port;
- int len, *f, ret, zero = 0;
- __u64 flags = 0;
-
- if (lport == 10000)
- ret = 10;
- else
- ret = 1;
-
- len = (__u32)skb->data_end - (__u32)skb->data;
- f = bpf_map_lookup_elem(&sock_skb_opts, &zero);
- if (f && *f) {
- ret = 3;
- flags = *f;
- }
-
- bpf_printk("sk_skb2: redirect(%iB) flags=%i\n",
- len, flags);
- return bpf_sk_redirect_map(skb, &sock_map, ret, flags);
-}
-
-SEC("sockops")
-int bpf_sockmap(struct bpf_sock_ops *skops)
-{
- __u32 lport, rport;
- int op, err = 0, index, key, ret;
-
-
- op = (int) skops->op;
-
- switch (op) {
- case BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB:
- lport = skops->local_port;
- rport = skops->remote_port;
-
- if (lport == 10000) {
- ret = 1;
- err = bpf_sock_map_update(skops, &sock_map, &ret,
- BPF_NOEXIST);
- bpf_printk("passive(%i -> %i) map ctx update err: %d\n",
- lport, bpf_ntohl(rport), err);
- }
- break;
- case BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB:
- lport = skops->local_port;
- rport = skops->remote_port;
-
- if (bpf_ntohl(rport) == 10001) {
- ret = 10;
- err = bpf_sock_map_update(skops, &sock_map, &ret,
- BPF_NOEXIST);
- bpf_printk("active(%i -> %i) map ctx update err: %d\n",
- lport, bpf_ntohl(rport), err);
- }
- break;
- default:
- break;
- }
-
- return 0;
-}
-
-SEC("sk_msg1")
-int bpf_prog4(struct sk_msg_md *msg)
-{
- int *bytes, zero = 0, one = 1;
- int *start, *end;
-
- bytes = bpf_map_lookup_elem(&sock_apply_bytes, &zero);
- if (bytes)
- bpf_msg_apply_bytes(msg, *bytes);
- bytes = bpf_map_lookup_elem(&sock_cork_bytes, &zero);
- if (bytes)
- bpf_msg_cork_bytes(msg, *bytes);
- start = bpf_map_lookup_elem(&sock_pull_bytes, &zero);
- end = bpf_map_lookup_elem(&sock_pull_bytes, &one);
- if (start && end)
- bpf_msg_pull_data(msg, *start, *end, 0);
- return SK_PASS;
-}
-
-SEC("sk_msg2")
-int bpf_prog5(struct sk_msg_md *msg)
-{
- int err1 = -1, err2 = -1, zero = 0, one = 1;
- int *bytes, *start, *end, len1, len2;
-
- bytes = bpf_map_lookup_elem(&sock_apply_bytes, &zero);
- if (bytes)
- err1 = bpf_msg_apply_bytes(msg, *bytes);
- bytes = bpf_map_lookup_elem(&sock_cork_bytes, &zero);
- if (bytes)
- err2 = bpf_msg_cork_bytes(msg, *bytes);
- len1 = (__u64)msg->data_end - (__u64)msg->data;
- start = bpf_map_lookup_elem(&sock_pull_bytes, &zero);
- end = bpf_map_lookup_elem(&sock_pull_bytes, &one);
- if (start && end) {
- int err;
-
- bpf_printk("sk_msg2: pull(%i:%i)\n",
- start ? *start : 0, end ? *end : 0);
- err = bpf_msg_pull_data(msg, *start, *end, 0);
- if (err)
- bpf_printk("sk_msg2: pull_data err %i\n",
- err);
- len2 = (__u64)msg->data_end - (__u64)msg->data;
- bpf_printk("sk_msg2: length update %i->%i\n",
- len1, len2);
- }
- bpf_printk("sk_msg2: data length %i err1 %i err2 %i\n",
- len1, err1, err2);
- return SK_PASS;
-}
-
-SEC("sk_msg3")
-int bpf_prog6(struct sk_msg_md *msg)
-{
- int *bytes, zero = 0, one = 1, key = 0;
- int *start, *end, *f;
- __u64 flags = 0;
-
- bytes = bpf_map_lookup_elem(&sock_apply_bytes, &zero);
- if (bytes)
- bpf_msg_apply_bytes(msg, *bytes);
- bytes = bpf_map_lookup_elem(&sock_cork_bytes, &zero);
- if (bytes)
- bpf_msg_cork_bytes(msg, *bytes);
- start = bpf_map_lookup_elem(&sock_pull_bytes, &zero);
- end = bpf_map_lookup_elem(&sock_pull_bytes, &one);
- if (start && end)
- bpf_msg_pull_data(msg, *start, *end, 0);
- f = bpf_map_lookup_elem(&sock_redir_flags, &zero);
- if (f && *f) {
- key = 2;
- flags = *f;
- }
- return bpf_msg_redirect_map(msg, &sock_map_redir, key, flags);
-}
-
-SEC("sk_msg4")
-int bpf_prog7(struct sk_msg_md *msg)
-{
- int err1 = 0, err2 = 0, zero = 0, one = 1, key = 0;
- int *f, *bytes, *start, *end, len1, len2;
- __u64 flags = 0;
-
- int err;
- bytes = bpf_map_lookup_elem(&sock_apply_bytes, &zero);
- if (bytes)
- err1 = bpf_msg_apply_bytes(msg, *bytes);
- bytes = bpf_map_lookup_elem(&sock_cork_bytes, &zero);
- if (bytes)
- err2 = bpf_msg_cork_bytes(msg, *bytes);
- len1 = (__u64)msg->data_end - (__u64)msg->data;
- start = bpf_map_lookup_elem(&sock_pull_bytes, &zero);
- end = bpf_map_lookup_elem(&sock_pull_bytes, &one);
- if (start && end) {
-
- bpf_printk("sk_msg2: pull(%i:%i)\n",
- start ? *start : 0, end ? *end : 0);
- err = bpf_msg_pull_data(msg, *start, *end, 0);
- if (err)
- bpf_printk("sk_msg2: pull_data err %i\n",
- err);
- len2 = (__u64)msg->data_end - (__u64)msg->data;
- bpf_printk("sk_msg2: length update %i->%i\n",
- len1, len2);
- }
- f = bpf_map_lookup_elem(&sock_redir_flags, &zero);
- if (f && *f) {
- key = 2;
- flags = *f;
- }
- bpf_printk("sk_msg3: redirect(%iB) flags=%i err=%i\n",
- len1, flags, err1 ? err1 : err2);
- err = bpf_msg_redirect_map(msg, &sock_map_redir, key, flags);
- bpf_printk("sk_msg3: err %i\n", err);
- return err;
-}
-
-SEC("sk_msg5")
-int bpf_prog8(struct sk_msg_md *msg)
-{
- void *data_end = (void *)(long) msg->data_end;
- void *data = (void *)(long) msg->data;
- int ret = 0, *bytes, zero = 0;
-
- bytes = bpf_map_lookup_elem(&sock_apply_bytes, &zero);
- if (bytes) {
- ret = bpf_msg_apply_bytes(msg, *bytes);
- if (ret)
- return SK_DROP;
- } else {
- return SK_DROP;
- }
- return SK_PASS;
-}
-SEC("sk_msg6")
-int bpf_prog9(struct sk_msg_md *msg)
-{
- void *data_end = (void *)(long) msg->data_end;
- void *data = (void *)(long) msg->data;
- int ret = 0, *bytes, zero = 0;
-
- bytes = bpf_map_lookup_elem(&sock_cork_bytes, &zero);
- if (bytes) {
- if (((__u64)data_end - (__u64)data) >= *bytes)
- return SK_PASS;
- ret = bpf_msg_cork_bytes(msg, *bytes);
- if (ret)
- return SK_DROP;
- }
- return SK_PASS;
-}
-
-SEC("sk_msg7")
-int bpf_prog10(struct sk_msg_md *msg)
-{
- int *bytes, zero = 0, one = 1;
- int *start, *end;
-
- bytes = bpf_map_lookup_elem(&sock_apply_bytes, &zero);
- if (bytes)
- bpf_msg_apply_bytes(msg, *bytes);
- bytes = bpf_map_lookup_elem(&sock_cork_bytes, &zero);
- if (bytes)
- bpf_msg_cork_bytes(msg, *bytes);
- start = bpf_map_lookup_elem(&sock_pull_bytes, &zero);
- end = bpf_map_lookup_elem(&sock_pull_bytes, &one);
- if (start && end)
- bpf_msg_pull_data(msg, *start, *end, 0);
-
- return SK_DROP;
-}
-
-
-char _license[] SEC("license") = "GPL";
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.