net/ipv4: add tracepoint for icmp_send

[linux-2.6-block.git] / include / trace / events / icmp.h

diff --git a/include/trace/events/icmp.h b/include/trace/events/icmp.h
new file mode 100644 (file)
index 0000000..3155979
--- /dev/null
+++ b/include/trace/events/icmp.h
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM icmp
+
+#if !defined(_TRACE_ICMP_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_ICMP_H
+
+#include <linux/icmp.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(icmp_send,
+
+               TP_PROTO(const struct sk_buff *skb, int type, int code),
+
+               TP_ARGS(skb, type, code),
+
+               TP_STRUCT__entry(
+                       __field(const void *, skbaddr)
+                       __field(int, type)
+                       __field(int, code)
+                       __array(__u8, saddr, 4)
+                       __array(__u8, daddr, 4)
+                       __field(__u16, sport)
+                       __field(__u16, dport)
+                       __field(unsigned short, ulen)
+               ),
+
+               TP_fast_assign(
+                       struct iphdr *iph = ip_hdr(skb);
+                       struct udphdr *uh = udp_hdr(skb);
+                       int proto_4 = iph->protocol;
+                       __be32 *p32;
+
+                       __entry->skbaddr = skb;
+                       __entry->type = type;
+                       __entry->code = code;
+
+                       if (proto_4 != IPPROTO_UDP || (u8 *)uh < skb->head ||
+                               (u8 *)uh + sizeof(struct udphdr)
+                               > skb_tail_pointer(skb)) {
+                               __entry->sport = 0;
+                               __entry->dport = 0;
+                               __entry->ulen = 0;
+                       } else {
+                               __entry->sport = ntohs(uh->source);
+                               __entry->dport = ntohs(uh->dest);
+                               __entry->ulen = ntohs(uh->len);
+                       }
+
+                       p32 = (__be32 *) __entry->saddr;
+                       *p32 = iph->saddr;
+
+                       p32 = (__be32 *) __entry->daddr;
+                       *p32 = iph->daddr;
+               ),
+
+               TP_printk("icmp_send: type=%d, code=%d. From %pI4:%u to %pI4:%u ulen=%d skbaddr=%p",
+                       __entry->type, __entry->code,
+                       __entry->saddr, __entry->sport, __entry->daddr,
+                       __entry->dport, __entry->ulen, __entry->skbaddr)
+);
+
+#endif /* _TRACE_ICMP_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
+