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 LTTNG_TRACEPOINT_ENUM(skb_drop_reason,
  19         TP_ENUM_VALUES(
  20                 ctf_enum_value("NOT_SPECIFIED", SKB_DROP_REASON_NOT_SPECIFIED)
  21                 ctf_enum_value("NO_SOCKET",     SKB_DROP_REASON_NO_SOCKET)
  22                 ctf_enum_value("PKT_TOO_SMALL", SKB_DROP_REASON_PKT_TOO_SMALL)
  23                 ctf_enum_value("TCP_CSUM",      SKB_DROP_REASON_TCP_CSUM)
  24                 ctf_enum_value("SOCKET_FILTER", SKB_DROP_REASON_SOCKET_FILTER)
  25                 ctf_enum_value("UDP_CSUM",      SKB_DROP_REASON_UDP_CSUM)
  26                 ctf_enum_value("MAX",           SKB_DROP_REASON_MAX)
  27         )
  28 )
  29 #elif (LTTNG_RHEL_KERNEL_RANGE(5,14,0,70,0,0, 5,15,0,0,0,0))
  30 LTTNG_TRACEPOINT_ENUM(skb_drop_reason,
  31         TP_ENUM_VALUES(
  32                 ctf_enum_value("NOT_SPECIFIED", SKB_DROP_REASON_NOT_SPECIFIED)
  33                 ctf_enum_value("NO_SOCKET",     SKB_DROP_REASON_NO_SOCKET)
  34                 ctf_enum_value("PKT_TOO_SMALL", SKB_DROP_REASON_PKT_TOO_SMALL)
  35                 ctf_enum_value("TCP_CSUM",      SKB_DROP_REASON_TCP_CSUM)
  36                 ctf_enum_value("UDP_CSUM",      SKB_DROP_REASON_UDP_CSUM)
  37                 ctf_enum_value("MAX",           SKB_DROP_REASON_MAX)
  38         )
  39 )
  40 #endif
  41
  42 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,17,0) \
  43         || LTTNG_KERNEL_RANGE(5,15,58, 5,16,0) \
  44         || LTTNG_RHEL_KERNEL_RANGE(5,14,0,70,0,0, 5,15,0,0,0,0))
  45 LTTNG_TRACEPOINT_EVENT_MAP(kfree_skb,
  46
  47         skb_kfree,
  48
  49         TP_PROTO(struct sk_buff *skb, void *location,
  50                 enum skb_drop_reason reason),
  51
  52         TP_ARGS(skb, location, reason),
  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                 ctf_enum(skb_drop_reason, uint8_t, reason, reason)
  59         )
  60 )
  61 #else
  62 LTTNG_TRACEPOINT_EVENT_MAP(kfree_skb,
  63
  64         skb_kfree,
  65
  66         TP_PROTO(struct sk_buff *skb, void *location),
  67
  68         TP_ARGS(skb, location),
  69
  70         TP_FIELDS(
  71                 ctf_integer_hex(void *, skbaddr, skb)
  72                 ctf_integer_hex(void *, location, location)
  73                 ctf_integer_network(unsigned short, protocol, skb->protocol)
  74         )
  75 )
  76 #endif
  77
  78 LTTNG_TRACEPOINT_EVENT_MAP(consume_skb,
  79
  80         skb_consume,
  81
  82         TP_PROTO(struct sk_buff *skb),
  83
  84         TP_ARGS(skb),
  85
  86         TP_FIELDS(
  87                 ctf_integer_hex(void *, skbaddr, skb)
  88         )
  89 )
  90
  91 LTTNG_TRACEPOINT_EVENT(skb_copy_datagram_iovec,
  92
  93         TP_PROTO(const struct sk_buff *skb, int len),
  94
  95         TP_ARGS(skb, len),
  96
  97         TP_FIELDS(
  98                 ctf_integer_hex(const void *, skbaddr, skb)
  99                 ctf_integer(int, len, len)
 100         )
 101 )
 102
 103 #endif /* LTTNG_TRACE_SKB_H */
 104
 105 /* This part must be outside protection */
 106 #include <probes/define_trace.h>