xref: /linux/tools/testing/selftests/bpf/progs/bpf_tracing_net.h (revision 1a9239bb4253f9076b5b4b2a1a4e8d7defd77a95)
1 /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
2 #ifndef __BPF_TRACING_NET_H__
3 #define __BPF_TRACING_NET_H__
4 
5 #include <vmlinux.h>
6 #include <bpf/bpf_core_read.h>
7 
8 #define AF_INET			2
9 #define AF_INET6		10
10 
11 #define SOL_SOCKET		1
12 #define SO_REUSEADDR		2
13 #define SO_SNDBUF		7
14 #define SO_RCVBUF		8
15 #define SO_KEEPALIVE		9
16 #define SO_PRIORITY		12
17 #define SO_REUSEPORT		15
18 #define SO_RCVLOWAT		18
19 #define SO_BINDTODEVICE		25
20 #define SO_MARK			36
21 #define SO_MAX_PACING_RATE	47
22 #define SO_BINDTOIFINDEX	62
23 #define SO_TXREHASH		74
24 #define __SO_ACCEPTCON		(1 << 16)
25 
26 #define IP_TOS			1
27 
28 #define SOL_IPV6		41
29 #define IPV6_TCLASS		67
30 #define IPV6_AUTOFLOWLABEL	70
31 
32 #define TC_ACT_UNSPEC		(-1)
33 #define TC_ACT_OK		0
34 #define TC_ACT_SHOT		2
35 
36 #define SOL_TCP			6
37 #define TCP_NODELAY		1
38 #define TCP_MAXSEG		2
39 #define TCP_KEEPIDLE		4
40 #define TCP_KEEPINTVL		5
41 #define TCP_KEEPCNT		6
42 #define TCP_SYNCNT		7
43 #define TCP_WINDOW_CLAMP	10
44 #define TCP_CONGESTION		13
45 #define TCP_THIN_LINEAR_TIMEOUTS	16
46 #define TCP_USER_TIMEOUT	18
47 #define TCP_NOTSENT_LOWAT	25
48 #define TCP_SAVE_SYN		27
49 #define TCP_SAVED_SYN		28
50 #define TCP_CA_NAME_MAX		16
51 #define TCP_NAGLE_OFF		1
52 #define TCP_RTO_MAX_MS		44
53 
54 #define TCP_ECN_OK              1
55 #define TCP_ECN_QUEUE_CWR       2
56 #define TCP_ECN_DEMAND_CWR      4
57 #define TCP_ECN_SEEN            8
58 
59 #define TCP_CONG_NEEDS_ECN     0x2
60 
61 #define ICSK_TIME_RETRANS	1
62 #define ICSK_TIME_PROBE0	3
63 #define ICSK_TIME_LOSS_PROBE	5
64 #define ICSK_TIME_REO_TIMEOUT	6
65 
66 #define ETH_ALEN		6
67 #define ETH_HLEN		14
68 #define ETH_P_IP		0x0800
69 #define ETH_P_IPV6		0x86DD
70 
71 #define NEXTHDR_TCP		6
72 
73 #define TCPOPT_NOP		1
74 #define TCPOPT_EOL		0
75 #define TCPOPT_MSS		2
76 #define TCPOPT_WINDOW		3
77 #define TCPOPT_TIMESTAMP	8
78 #define TCPOPT_SACK_PERM	4
79 
80 #define TCPOLEN_MSS		4
81 #define TCPOLEN_WINDOW		3
82 #define TCPOLEN_TIMESTAMP	10
83 #define TCPOLEN_SACK_PERM	2
84 
85 #define CHECKSUM_NONE		0
86 #define CHECKSUM_PARTIAL	3
87 
88 #define IFNAMSIZ		16
89 
90 #define RTF_GATEWAY		0x0002
91 
92 #define TCP_INFINITE_SSTHRESH	0x7fffffff
93 #define TCP_PINGPONG_THRESH	3
94 
95 #define FLAG_DATA_ACKED 0x04 /* This ACK acknowledged new data.		*/
96 #define FLAG_SYN_ACKED 0x10 /* This ACK acknowledged SYN.		*/
97 #define FLAG_DATA_SACKED 0x20 /* New SACK.				*/
98 #define FLAG_SND_UNA_ADVANCED \
99 	0x400 /* Snd_una was changed (!= FLAG_DATA_ACKED) */
100 #define FLAG_ACKED (FLAG_DATA_ACKED | FLAG_SYN_ACKED)
101 #define FLAG_FORWARD_PROGRESS (FLAG_ACKED | FLAG_DATA_SACKED)
102 
103 #define fib_nh_dev		nh_common.nhc_dev
104 #define fib_nh_gw_family	nh_common.nhc_gw_family
105 #define fib_nh_gw6		nh_common.nhc_gw.ipv6
106 
107 #define inet_daddr		sk.__sk_common.skc_daddr
108 #define inet_rcv_saddr		sk.__sk_common.skc_rcv_saddr
109 #define inet_dport		sk.__sk_common.skc_dport
110 
111 #define udp_portaddr_hash	inet.sk.__sk_common.skc_u16hashes[1]
112 
113 #define ir_loc_addr		req.__req_common.skc_rcv_saddr
114 #define ir_num			req.__req_common.skc_num
115 #define ir_rmt_addr		req.__req_common.skc_daddr
116 #define ir_rmt_port		req.__req_common.skc_dport
117 #define ir_v6_rmt_addr		req.__req_common.skc_v6_daddr
118 #define ir_v6_loc_addr		req.__req_common.skc_v6_rcv_saddr
119 
120 #define sk_num			__sk_common.skc_num
121 #define sk_dport		__sk_common.skc_dport
122 #define sk_family		__sk_common.skc_family
123 #define sk_rmem_alloc		sk_backlog.rmem_alloc
124 #define sk_refcnt		__sk_common.skc_refcnt
125 #define sk_state		__sk_common.skc_state
126 #define sk_net			__sk_common.skc_net
127 #define sk_v6_daddr		__sk_common.skc_v6_daddr
128 #define sk_v6_rcv_saddr		__sk_common.skc_v6_rcv_saddr
129 #define sk_flags		__sk_common.skc_flags
130 #define sk_reuse		__sk_common.skc_reuse
131 #define sk_cookie		__sk_common.skc_cookie
132 
133 #define s6_addr32		in6_u.u6_addr32
134 
135 #define tw_daddr		__tw_common.skc_daddr
136 #define tw_rcv_saddr		__tw_common.skc_rcv_saddr
137 #define tw_dport		__tw_common.skc_dport
138 #define tw_refcnt		__tw_common.skc_refcnt
139 #define tw_v6_daddr		__tw_common.skc_v6_daddr
140 #define tw_v6_rcv_saddr		__tw_common.skc_v6_rcv_saddr
141 
142 #define tcp_jiffies32 ((__u32)bpf_jiffies64())
143 
inet_csk(const struct sock * sk)144 static inline struct inet_connection_sock *inet_csk(const struct sock *sk)
145 {
146 	return (struct inet_connection_sock *)sk;
147 }
148 
inet_csk_ca(const struct sock * sk)149 static inline void *inet_csk_ca(const struct sock *sk)
150 {
151 	return (void *)inet_csk(sk)->icsk_ca_priv;
152 }
153 
tcp_sk(const struct sock * sk)154 static inline struct tcp_sock *tcp_sk(const struct sock *sk)
155 {
156 	return (struct tcp_sock *)sk;
157 }
158 
tcp_in_slow_start(const struct tcp_sock * tp)159 static inline bool tcp_in_slow_start(const struct tcp_sock *tp)
160 {
161 	return tp->snd_cwnd < tp->snd_ssthresh;
162 }
163 
tcp_is_cwnd_limited(const struct sock * sk)164 static inline bool tcp_is_cwnd_limited(const struct sock *sk)
165 {
166 	const struct tcp_sock *tp = tcp_sk(sk);
167 
168 	/* If in slow start, ensure cwnd grows to twice what was ACKed. */
169 	if (tcp_in_slow_start(tp))
170 		return tp->snd_cwnd < 2 * tp->max_packets_out;
171 
172 	return !!BPF_CORE_READ_BITFIELD(tp, is_cwnd_limited);
173 }
174 
175 #endif
176