bpf_tracing_net.h

  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#if defined(__TARGET_ARCH_powerpc)
 19#define SO_RCVLOWAT		16
 20#else
 21#define SO_RCVLOWAT		18
 22#endif
 23#define SO_BINDTODEVICE		25
 24#define SO_MARK			36
 25#define SO_MAX_PACING_RATE	47
 26#define SO_BINDTOIFINDEX	62
 27#define SO_TXREHASH		74
 28#define __SO_ACCEPTCON		(1 << 16)
 29
 30#define IP_TOS			1
 31
 32#define SOL_IPV6		41
 33#define IPV6_TCLASS		67
 34#define IPV6_AUTOFLOWLABEL	70
 35
 36#define TC_ACT_UNSPEC		(-1)
 37#define TC_ACT_OK		0
 38#define TC_ACT_SHOT		2
 39
 40#define SOL_TCP			6
 41#define TCP_NODELAY		1
 42#define TCP_MAXSEG		2
 43#define TCP_KEEPIDLE		4
 44#define TCP_KEEPINTVL		5
 45#define TCP_KEEPCNT		6
 46#define TCP_SYNCNT		7
 47#define TCP_WINDOW_CLAMP	10
 48#define TCP_CONGESTION		13
 49#define TCP_THIN_LINEAR_TIMEOUTS	16
 50#define TCP_USER_TIMEOUT	18
 51#define TCP_NOTSENT_LOWAT	25
 52#define TCP_SAVE_SYN		27
 53#define TCP_SAVED_SYN		28
 54#define TCP_CA_NAME_MAX		16
 55#define TCP_NAGLE_OFF		1
 56#define TCP_RTO_MAX_MS		44
 57
 58#define TCP_ECN_OK              1
 59#define TCP_ECN_QUEUE_CWR       2
 60#define TCP_ECN_DEMAND_CWR      4
 61#define TCP_ECN_SEEN            8
 62
 63#define TCP_CONG_NEEDS_ECN     0x2
 64
 65#define ICSK_TIME_RETRANS	1
 66#define ICSK_TIME_PROBE0	3
 67#define ICSK_TIME_LOSS_PROBE	5
 68#define ICSK_TIME_REO_TIMEOUT	6
 69
 70#define ETH_ALEN		6
 71#define ETH_HLEN		14
 72#define ETH_P_IP		0x0800
 73#define ETH_P_IPV6		0x86DD
 74
 75#define NEXTHDR_TCP		6
 76
 77#define TCPOPT_NOP		1
 78#define TCPOPT_EOL		0
 79#define TCPOPT_MSS		2
 80#define TCPOPT_WINDOW		3
 81#define TCPOPT_TIMESTAMP	8
 82#define TCPOPT_SACK_PERM	4
 83
 84#define TCPOLEN_MSS		4
 85#define TCPOLEN_WINDOW		3
 86#define TCPOLEN_TIMESTAMP	10
 87#define TCPOLEN_SACK_PERM	2
 88
 89#define CHECKSUM_NONE		0
 90#define CHECKSUM_PARTIAL	3
 91
 92#define IFNAMSIZ		16
 93
 94#define RTF_GATEWAY		0x0002
 95
 96#define TCP_INFINITE_SSTHRESH	0x7fffffff
 97#define TCP_PINGPONG_THRESH	3
 98
 99#define FLAG_DATA_ACKED 0x04 /* This ACK acknowledged new data.		*/
100#define FLAG_SYN_ACKED 0x10 /* This ACK acknowledged SYN.		*/
101#define FLAG_DATA_SACKED 0x20 /* New SACK.				*/
102#define FLAG_SND_UNA_ADVANCED \
103	0x400 /* Snd_una was changed (!= FLAG_DATA_ACKED) */
104#define FLAG_ACKED (FLAG_DATA_ACKED | FLAG_SYN_ACKED)
105#define FLAG_FORWARD_PROGRESS (FLAG_ACKED | FLAG_DATA_SACKED)
106
107#define fib_nh_dev		nh_common.nhc_dev
108#define fib_nh_gw_family	nh_common.nhc_gw_family
109#define fib_nh_gw6		nh_common.nhc_gw.ipv6
110
111#define inet_daddr		sk.__sk_common.skc_daddr
112#define inet_rcv_saddr		sk.__sk_common.skc_rcv_saddr
113#define inet_dport		sk.__sk_common.skc_dport
114
115#define udp_portaddr_hash	inet.sk.__sk_common.skc_u16hashes[1]
116
117#define ir_loc_addr		req.__req_common.skc_rcv_saddr
118#define ir_num			req.__req_common.skc_num
119#define ir_rmt_addr		req.__req_common.skc_daddr
120#define ir_rmt_port		req.__req_common.skc_dport
121#define ir_v6_rmt_addr		req.__req_common.skc_v6_daddr
122#define ir_v6_loc_addr		req.__req_common.skc_v6_rcv_saddr
123
124#define sk_num			__sk_common.skc_num
125#define sk_dport		__sk_common.skc_dport
126#define sk_family		__sk_common.skc_family
127#define sk_rmem_alloc		sk_backlog.rmem_alloc
128#define sk_refcnt		__sk_common.skc_refcnt
129#define sk_state		__sk_common.skc_state
130#define sk_net			__sk_common.skc_net
131#define sk_rcv_saddr		__sk_common.skc_rcv_saddr
132#define sk_v6_daddr		__sk_common.skc_v6_daddr
133#define sk_v6_rcv_saddr		__sk_common.skc_v6_rcv_saddr
134#define sk_flags		__sk_common.skc_flags
135#define sk_reuse		__sk_common.skc_reuse
136#define sk_cookie		__sk_common.skc_cookie
137
138#define s6_addr32		in6_u.u6_addr32
139
140#define tw_daddr		__tw_common.skc_daddr
141#define tw_rcv_saddr		__tw_common.skc_rcv_saddr
142#define tw_dport		__tw_common.skc_dport
143#define tw_refcnt		__tw_common.skc_refcnt
144#define tw_v6_daddr		__tw_common.skc_v6_daddr
145#define tw_v6_rcv_saddr		__tw_common.skc_v6_rcv_saddr
146
147#define tcp_jiffies32 ((__u32)bpf_jiffies64())
148
149#ifndef min
150#define min(a, b) ((a) < (b) ? (a) : (b))
151#endif
152#ifndef max
153#define max(a, b) ((a) > (b) ? (a) : (b))
154#endif
155
156static inline bool before(__u32 seq1, __u32 seq2)
157{
158	return (__s32)(seq1 - seq2) < 0;
159}
160
161#define after(seq2, seq1) before(seq1, seq2)
162
163static inline struct inet_connection_sock *inet_csk(const struct sock *sk)
164{
165	return (struct inet_connection_sock *)sk;
166}
167
168static inline void *inet_csk_ca(const struct sock *sk)
169{
170	return (void *)inet_csk(sk)->icsk_ca_priv;
171}
172
173static inline struct tcp_sock *tcp_sk(const struct sock *sk)
174{
175	return (struct tcp_sock *)sk;
176}
177
178static inline bool tcp_in_slow_start(const struct tcp_sock *tp)
179{
180	return tp->snd_cwnd < tp->snd_ssthresh;
181}
182
183static inline bool tcp_is_cwnd_limited(const struct sock *sk)
184{
185	const struct tcp_sock *tp = tcp_sk(sk);
186
187	/* If in slow start, ensure cwnd grows to twice what was ACKed. */
188	if (tcp_in_slow_start(tp))
189		return tp->snd_cwnd < 2 * tp->max_packets_out;
190
191	return !!BPF_CORE_READ_BITFIELD(tp, is_cwnd_limited);
192}
193
194#endif