include/instrumentation/events/skb.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 #undef TRACE_SYSTEM
   3 #define TRACE_SYSTEM skb
   4
   5 #if !defined(LTTNG_TRACE_SKB_H) || defined(TRACE_HEADER_MULTI_READ)
   6 #define LTTNG_TRACE_SKB_H
   7
   8 #include <lttng/tracepoint-event.h>
   9 #include <linux/skbuff.h>
  10 #include <linux/netdevice.h>
  11 #include <lttng/kernel-version.h>
  12
  13 /*
  14  * Tracepoint for free an sk_buff:
  15  */
  16 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,17,0))
  17 LTTNG_TRACEPOINT_ENUM(skb_drop_reason,
  18         TP_ENUM_VALUES(
  19                 ctf_enum_value("NOT_SPECIFIED", SKB_DROP_REASON_NOT_SPECIFIED)
  20                 ctf_enum_value("NO_SOCKET",     SKB_DROP_REASON_NO_SOCKET)
  21                 ctf_enum_value("PKT_TOO_SMALL", SKB_DROP_REASON_PKT_TOO_SMALL)
  22                 ctf_enum_value("TCP_CSUM",      SKB_DROP_REASON_TCP_CSUM)
  23                 ctf_enum_value("TCP_FILTER",    SKB_DROP_REASON_TCP_FILTER)
  24                 ctf_enum_value("UDP_CSUM",      SKB_DROP_REASON_UDP_CSUM)
  25                 ctf_enum_value("MAX",           SKB_DROP_REASON_MAX)
  26         )
  27 )
  28
  29 LTTNG_TRACEPOINT_EVENT_MAP(kfree_skb,
  30
  31         skb_kfree,
  32
  33         TP_PROTO(struct sk_buff *skb, void *location,
  34                 enum skb_drop_reason reason),
  35
  36         TP_ARGS(skb, location, reason),
  37
  38         TP_FIELDS(
  39                 ctf_integer_hex(void *, skbaddr, skb)
  40                 ctf_integer_hex(void *, location, location)
  41                 ctf_integer_network(unsigned short, protocol, skb->protocol)
  42                 ctf_enum(skb_drop_reason, uint8_t, reason, reason)
  43         )
  44 )
  45 #else
  46 LTTNG_TRACEPOINT_EVENT_MAP(kfree_skb,
  47
  48         skb_kfree,
  49
  50         TP_PROTO(struct sk_buff *skb, void *location),
  51
  52         TP_ARGS(skb, location),
  53
  54         TP_FIELDS(
  55                 ctf_integer_hex(void *, skbaddr, skb)
  56                 ctf_integer_hex(void *, location, location)
  57                 ctf_integer_network(unsigned short, protocol, skb->protocol)
  58         )
  59 )
  60 #endif
  61
  62 LTTNG_TRACEPOINT_EVENT_MAP(consume_skb,
  63
  64         skb_consume,
  65
  66         TP_PROTO(struct sk_buff *skb),
  67
  68         TP_ARGS(skb),
  69
  70         TP_FIELDS(
  71                 ctf_integer_hex(void *, skbaddr, skb)
  72         )
  73 )
  74
  75 LTTNG_TRACEPOINT_EVENT(skb_copy_datagram_iovec,
  76
  77         TP_PROTO(const struct sk_buff *skb, int len),
  78
  79         TP_ARGS(skb, len),
  80
  81         TP_FIELDS(
  82                 ctf_integer_hex(const void *, skbaddr, skb)
  83                 ctf_integer(int, len, len)
  84         )
  85 )
  86
  87 #endif /* LTTNG_TRACE_SKB_H */
  88
  89 /* This part must be outside protection */
  90 #include <lttng/define_trace.h>