include/trace/events/icmp.h

   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