Add kernel probes for supplementary subsystems

[lttng-modules.git] / instrumentation / events / lttng-module / skb.h

diff --git a/instrumentation/events/lttng-module/skb.h b/instrumentation/events/lttng-module/skb.h
new file mode 100644 (file)
index 0000000..9a79449
--- /dev/null
+++ b/instrumentation/events/lttng-module/skb.h
@@ -0,0 +1,75 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM skb
+
+#if !defined(_TRACE_SKB_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SKB_H
+
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/tracepoint.h>
+
+/*
+ * Tracepoint for free an sk_buff:
+ */
+TRACE_EVENT(kfree_skb,
+
+       TP_PROTO(struct sk_buff *skb, void *location),
+
+       TP_ARGS(skb, location),
+
+       TP_STRUCT__entry(
+               __field(        void *,         skbaddr         )
+               __field(        void *,         location        )
+               __field(        unsigned short, protocol        )
+       ),
+
+       TP_fast_assign(
+               tp_assign(skbaddr, skb);
+               tp_assign(location, location);
+               tp_assign(protocol, ntohs(skb->protocol));
+       ),
+
+       TP_printk("skbaddr=%p protocol=%u location=%p",
+               __entry->skbaddr, __entry->protocol, __entry->location)
+)
+
+TRACE_EVENT(consume_skb,
+
+       TP_PROTO(struct sk_buff *skb),
+
+       TP_ARGS(skb),
+
+       TP_STRUCT__entry(
+               __field(        void *, skbaddr )
+       ),
+
+       TP_fast_assign(
+               tp_assign(skbaddr, skb);
+       ),
+
+       TP_printk("skbaddr=%p", __entry->skbaddr)
+)
+
+TRACE_EVENT(skb_copy_datagram_iovec,
+
+       TP_PROTO(const struct sk_buff *skb, int len),
+
+       TP_ARGS(skb, len),
+
+       TP_STRUCT__entry(
+               __field(        const void *,           skbaddr         )
+               __field(        int,                    len             )
+       ),
+
+       TP_fast_assign(
+               tp_assign(skbaddr, skb);
+               tp_assign(len, len);
+       ),
+
+       TP_printk("skbaddr=%p len=%d", __entry->skbaddr, __entry->len)
+)
+
+#endif /* _TRACE_SKB_H */
+
+/* This part must be outside protection */
+#include "../../../probes/define_trace.h"