instrumentation/events/lttng-module/skb.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   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 <probes/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_KERNEL_RANGE(5,15,58, 5,16,0))
  18
  19 LTTNG_TRACEPOINT_ENUM(skb_drop_reason,
  20         TP_ENUM_VALUES(
  21                 ctf_enum_value("NOT_SPECIFIED", SKB_DROP_REASON_NOT_SPECIFIED)
  22                 ctf_enum_value("NO_SOCKET",     SKB_DROP_REASON_NO_SOCKET)
  23                 ctf_enum_value("PKT_TOO_SMALL", SKB_DROP_REASON_PKT_TOO_SMALL)
  24                 ctf_enum_value("TCP_CSUM",      SKB_DROP_REASON_TCP_CSUM)
  25                 ctf_enum_value("SOCKET_FILTER", SKB_DROP_REASON_SOCKET_FILTER)
  26                 ctf_enum_value("UDP_CSUM",      SKB_DROP_REASON_UDP_CSUM)
  27                 ctf_enum_value("MAX",           SKB_DROP_REASON_MAX)
  28         )
  29 )
  30
  31 LTTNG_TRACEPOINT_EVENT_MAP(kfree_skb,
  32
  33         skb_kfree,
  34
  35         TP_PROTO(struct sk_buff *skb, void *location,
  36                 enum skb_drop_reason reason),
  37
  38         TP_ARGS(skb, location, reason),
  39
  40         TP_FIELDS(
  41                 ctf_integer_hex(void *, skbaddr, skb)
  42                 ctf_integer_hex(void *, location, location)
  43                 ctf_integer_network(unsigned short, protocol, skb->protocol)
  44                 ctf_enum(skb_drop_reason, uint8_t, reason, reason)
  45         )
  46 )
  47 #else
  48 LTTNG_TRACEPOINT_EVENT_MAP(kfree_skb,
  49
  50         skb_kfree,
  51
  52         TP_PROTO(struct sk_buff *skb, void *location),
  53
  54         TP_ARGS(skb, location),
  55
  56         TP_FIELDS(
  57                 ctf_integer_hex(void *, skbaddr, skb)
  58                 ctf_integer_hex(void *, location, location)
  59                 ctf_integer_network(unsigned short, protocol, skb->protocol)
  60         )
  61 )
  62 #endif
  63
  64 LTTNG_TRACEPOINT_EVENT_MAP(consume_skb,
  65
  66         skb_consume,
  67
  68         TP_PROTO(struct sk_buff *skb),
  69
  70         TP_ARGS(skb),
  71
  72         TP_FIELDS(
  73                 ctf_integer_hex(void *, skbaddr, skb)
  74         )
  75 )
  76
  77 LTTNG_TRACEPOINT_EVENT(skb_copy_datagram_iovec,
  78
  79         TP_PROTO(const struct sk_buff *skb, int len),
  80
  81         TP_ARGS(skb, len),
  82
  83         TP_FIELDS(
  84                 ctf_integer_hex(const void *, skbaddr, skb)
  85                 ctf_integer(int, len, len)
  86         )
  87 )
  88
  89 #endif /* LTTNG_TRACE_SKB_H */
  90
  91 /* This part must be outside protection */
  92 #include <probes/define_trace.h>