5de35e3ae9
I meet below compile errors:
"
In file included from test_tcpnotify_kern.c:12:
/usr/include/netinet/in.h:101:5: error: expected identifier
IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */
^
/usr/include/linux/in6.h:131:26: note: expanded from macro 'IPPROTO_HOPOPTS'
^
In file included from test_tcpnotify_kern.c:12:
/usr/include/netinet/in.h:103:5: error: expected identifier
IPPROTO_ROUTING = 43, /* IPv6 routing header. */
^
/usr/include/linux/in6.h:132:26: note: expanded from macro 'IPPROTO_ROUTING'
^
In file included from test_tcpnotify_kern.c:12:
/usr/include/netinet/in.h:105:5: error: expected identifier
IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */
^
/usr/include/linux/in6.h:133:26: note: expanded from macro 'IPPROTO_FRAGMENT'
"
The same compile errors are reported for test_tcpbpf_kern.c too.
My environment:
lsb_release -a:
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.6 LTS
Release: 16.04
Codename: xenial
dpkg -l | grep libc-dev:
ii libc-dev-bin 2.23-0ubuntu11 amd64 GNU C Library: Development binaries
ii linux-libc-dev:amd64 4.4.0-145.171 amd64 Linux Kernel Headers for development.
The reason is linux/in6.h and netinet/in.h aren't synchronous about how to
handle the same definitions, IPPROTO_HOPOPTS, etc.
This patch fixes the compile errors by moving <netinet/in.h> to before the
<linux/*.h>.
Signed-off-by: Wang YanQing <udknight@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
96 lines
2.0 KiB
C
96 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <stddef.h>
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#include <string.h>
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#include <netinet/in.h>
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#include <linux/bpf.h>
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#include <linux/if_ether.h>
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#include <linux/if_packet.h>
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#include <linux/ip.h>
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#include <linux/ipv6.h>
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#include <linux/types.h>
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#include <linux/socket.h>
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#include <linux/tcp.h>
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#include "bpf_helpers.h"
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#include "bpf_endian.h"
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#include "test_tcpnotify.h"
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struct bpf_map_def SEC("maps") global_map = {
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.type = BPF_MAP_TYPE_ARRAY,
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.key_size = sizeof(__u32),
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.value_size = sizeof(struct tcpnotify_globals),
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.max_entries = 4,
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};
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struct bpf_map_def SEC("maps") perf_event_map = {
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.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
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.key_size = sizeof(int),
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.value_size = sizeof(__u32),
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.max_entries = 2,
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};
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int _version SEC("version") = 1;
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SEC("sockops")
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int bpf_testcb(struct bpf_sock_ops *skops)
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{
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int rv = -1;
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int op;
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op = (int) skops->op;
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if (bpf_ntohl(skops->remote_port) != TESTPORT) {
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skops->reply = -1;
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return 0;
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}
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switch (op) {
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case BPF_SOCK_OPS_TIMEOUT_INIT:
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case BPF_SOCK_OPS_RWND_INIT:
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case BPF_SOCK_OPS_NEEDS_ECN:
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case BPF_SOCK_OPS_BASE_RTT:
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case BPF_SOCK_OPS_RTO_CB:
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rv = 1;
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break;
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case BPF_SOCK_OPS_TCP_CONNECT_CB:
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case BPF_SOCK_OPS_TCP_LISTEN_CB:
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case BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB:
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case BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB:
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bpf_sock_ops_cb_flags_set(skops, (BPF_SOCK_OPS_RETRANS_CB_FLAG|
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BPF_SOCK_OPS_RTO_CB_FLAG));
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rv = 1;
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break;
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case BPF_SOCK_OPS_RETRANS_CB: {
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__u32 key = 0;
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struct tcpnotify_globals g, *gp;
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struct tcp_notifier msg = {
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.type = 0xde,
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.subtype = 0xad,
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.source = 0xbe,
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.hash = 0xef,
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};
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rv = 1;
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/* Update results */
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gp = bpf_map_lookup_elem(&global_map, &key);
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if (!gp)
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break;
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g = *gp;
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g.total_retrans = skops->total_retrans;
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g.ncalls++;
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bpf_map_update_elem(&global_map, &key, &g,
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BPF_ANY);
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bpf_perf_event_output(skops, &perf_event_map,
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BPF_F_CURRENT_CPU,
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&msg, sizeof(msg));
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}
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break;
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default:
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rv = -1;
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}
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skops->reply = rv;
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return 1;
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}
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char _license[] SEC("license") = "GPL";
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