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9807080e21
Introducing entry_saddr and entry_daddr parameters in this macro for later use can help us record the reverse 4-tuple by analyzing the 4-tuple of the incoming skb when receiving. Signed-off-by: Jason Xing <kernelxing@tencent.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20240401073605.37335-2-kerneljasonxing@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#if !defined(_TRACE_NET_PROBE_COMMON_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_NET_PROBE_COMMON_H
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#define TP_STORE_ADDR_PORTS_V4(__entry, inet, sk) \
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do { \
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struct sockaddr_in *v4 = (void *)__entry->saddr; \
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\
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v4->sin_family = AF_INET; \
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v4->sin_port = inet->inet_sport; \
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v4->sin_addr.s_addr = inet->inet_saddr; \
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v4 = (void *)__entry->daddr; \
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v4->sin_family = AF_INET; \
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v4->sin_port = inet->inet_dport; \
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v4->sin_addr.s_addr = inet->inet_daddr; \
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} while (0)
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#if IS_ENABLED(CONFIG_IPV6)
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#define TP_STORE_ADDR_PORTS(__entry, inet, sk) \
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do { \
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if (sk->sk_family == AF_INET6) { \
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struct sockaddr_in6 *v6 = (void *)__entry->saddr; \
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\
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v6->sin6_family = AF_INET6; \
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v6->sin6_port = inet->inet_sport; \
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v6->sin6_addr = inet6_sk(sk)->saddr; \
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v6 = (void *)__entry->daddr; \
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v6->sin6_family = AF_INET6; \
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v6->sin6_port = inet->inet_dport; \
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v6->sin6_addr = sk->sk_v6_daddr; \
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} else \
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TP_STORE_ADDR_PORTS_V4(__entry, inet, sk); \
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} while (0)
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#else
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#define TP_STORE_ADDR_PORTS(__entry, inet, sk) \
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TP_STORE_ADDR_PORTS_V4(__entry, inet, sk);
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#endif
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#define TP_STORE_V4MAPPED(__entry, saddr, daddr) \
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do { \
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struct in6_addr *pin6; \
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\
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pin6 = (struct in6_addr *)__entry->saddr_v6; \
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ipv6_addr_set_v4mapped(saddr, pin6); \
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pin6 = (struct in6_addr *)__entry->daddr_v6; \
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ipv6_addr_set_v4mapped(daddr, pin6); \
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} while (0)
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#if IS_ENABLED(CONFIG_IPV6)
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#define TP_STORE_ADDRS(__entry, saddr, daddr, saddr6, daddr6) \
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do { \
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if (sk->sk_family == AF_INET6) { \
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struct in6_addr *pin6; \
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\
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pin6 = (struct in6_addr *)__entry->saddr_v6; \
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*pin6 = saddr6; \
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pin6 = (struct in6_addr *)__entry->daddr_v6; \
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*pin6 = daddr6; \
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} else { \
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TP_STORE_V4MAPPED(__entry, saddr, daddr); \
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} \
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} while (0)
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#else
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#define TP_STORE_ADDRS(__entry, saddr, daddr, saddr6, daddr6) \
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TP_STORE_V4MAPPED(__entry, saddr, daddr)
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#endif
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#define TP_STORE_ADDR_PORTS_SKB_V4(skb, protoh, entry_saddr, entry_daddr) \
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do { \
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struct sockaddr_in *v4 = (void *)entry_saddr; \
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\
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v4->sin_family = AF_INET; \
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v4->sin_port = protoh->source; \
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v4->sin_addr.s_addr = ip_hdr(skb)->saddr; \
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v4 = (void *)entry_daddr; \
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v4->sin_family = AF_INET; \
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v4->sin_port = protoh->dest; \
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v4->sin_addr.s_addr = ip_hdr(skb)->daddr; \
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} while (0)
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#if IS_ENABLED(CONFIG_IPV6)
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#define TP_STORE_ADDR_PORTS_SKB(skb, protoh, entry_saddr, entry_daddr) \
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do { \
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const struct iphdr *iph = ip_hdr(skb); \
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\
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if (iph->version == 6) { \
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struct sockaddr_in6 *v6 = (void *)entry_saddr; \
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\
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v6->sin6_family = AF_INET6; \
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v6->sin6_port = protoh->source; \
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v6->sin6_addr = ipv6_hdr(skb)->saddr; \
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v6 = (void *)entry_daddr; \
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v6->sin6_family = AF_INET6; \
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v6->sin6_port = protoh->dest; \
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v6->sin6_addr = ipv6_hdr(skb)->daddr; \
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} else \
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TP_STORE_ADDR_PORTS_SKB_V4(skb, protoh, \
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entry_saddr, \
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entry_daddr); \
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} while (0)
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#else
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#define TP_STORE_ADDR_PORTS_SKB(skb, protoh, entry_saddr, entry_daddr) \
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TP_STORE_ADDR_PORTS_SKB_V4(skb, protoh, entry_saddr, entry_daddr)
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#endif
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#endif
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