1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #undef TRACE_SYSTEM 3 #define TRACE_SYSTEM icmp 4 5 #if !defined(_TRACE_ICMP_H) || defined(TRACE_HEADER_MULTI_READ) 6 #define _TRACE_ICMP_H 7 8 #include <linux/icmp.h> 9 #include <linux/tracepoint.h> 10 11 TRACE_EVENT(icmp_send, 12 13 TP_PROTO(const struct sk_buff *skb, int type, int code), 14 15 TP_ARGS(skb, type, code), 16 17 TP_STRUCT__entry( 18 __field(const void *, skbaddr) 19 __field(int, type) 20 __field(int, code) 21 __array(__u8, saddr, 4) 22 __array(__u8, daddr, 4) 23 __field(__u16, sport) 24 __field(__u16, dport) 25 __field(unsigned short, ulen) 26 ), 27 28 TP_fast_assign( 29 struct iphdr *iph = ip_hdr(skb); 30 struct udphdr *uh = udp_hdr(skb); 31 int proto_4 = iph->protocol; 32 __be32 *p32; 33 34 __entry->skbaddr = skb; 35 __entry->type = type; 36 __entry->code = code; 37 38 if (proto_4 != IPPROTO_UDP || (u8 *)uh < skb->head || 39 (u8 *)uh + sizeof(struct udphdr) 40 > skb_tail_pointer(skb)) { 41 __entry->sport = 0; 42 __entry->dport = 0; 43 __entry->ulen = 0; 44 } else { 45 __entry->sport = ntohs(uh->source); 46 __entry->dport = ntohs(uh->dest); 47 __entry->ulen = ntohs(uh->len); 48 } 49 50 p32 = (__be32 *) __entry->saddr; 51 *p32 = iph->saddr; 52 53 p32 = (__be32 *) __entry->daddr; 54 *p32 = iph->daddr; 55 ), 56 57 TP_printk("icmp_send: type=%d, code=%d. From %pI4:%u to %pI4:%u ulen=%d skbaddr=%p", 58 __entry->type, __entry->code, 59 __entry->saddr, __entry->sport, __entry->daddr, 60 __entry->dport, __entry->ulen, __entry->skbaddr) 61 ); 62 63 #endif /* _TRACE_ICMP_H */ 64 65 /* This part must be outside protection */ 66 #include <trace/define_trace.h> 67 68