git.ipfire.org Git - thirdparty/openembedded/openembedded-core-contrib.git/blob

   1 From d8254360c7f2ff9b3f945e9668d89c0b56b9bd91 Mon Sep 17 00:00:00 2001
   2 From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   3 Date: Fri, 29 Jul 2022 15:37:43 -0400
   4 Subject: [PATCH] fix: net: skb: introduce kfree_skb_reason() (v5.15.58..v5.16)
   5
   6 See upstream commit :
   7
   8   commit c504e5c2f9648a1e5c2be01e8c3f59d394192bd3
   9   Author: Menglong Dong <imagedong@tencent.com>
  10   Date:   Sun Jan 9 14:36:26 2022 +0800
  11
  12     net: skb: introduce kfree_skb_reason()
  13
  14     Introduce the interface kfree_skb_reason(), which is able to pass
  15     the reason why the skb is dropped to 'kfree_skb' tracepoint.
  16
  17     Add the 'reason' field to 'trace_kfree_skb', therefor user can get
  18     more detail information about abnormal skb with 'drop_monitor' or
  19     eBPF.
  20
  21     All drop reasons are defined in the enum 'skb_drop_reason', and
  22     they will be print as string in 'kfree_skb' tracepoint in format
  23     of 'reason: XXX'.
  24
  25     ( Maybe the reasons should be defined in a uapi header file, so that
  26     user space can use them? )
  27
  28 Upstream-Status: Backport
  29
  30 Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  31 Change-Id: Ib3c039207739dad10f097cf76474e0822e351273
  32 ---
  33  include/instrumentation/events/skb.h | 4 +++-
  34  1 file changed, 3 insertions(+), 1 deletion(-)
  35
  36 diff --git a/include/instrumentation/events/skb.h b/include/instrumentation/events/skb.h
  37 index 237e54ad..186732ea 100644
  38 --- a/include/instrumentation/events/skb.h
  39 +++ b/include/instrumentation/events/skb.h
  40 @@ -13,7 +13,9 @@
  41  /*
  42   * Tracepoint for free an sk_buff:
  43   */
  44 -#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,17,0))
  45 +#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,17,0) \
  46 +       || LTTNG_KERNEL_RANGE(5,15,58, 5,16,0))
  47 +
  48  LTTNG_TRACEPOINT_ENUM(skb_drop_reason,
  49         TP_ENUM_VALUES(
  50                 ctf_enum_value("NOT_SPECIFIED", SKB_DROP_REASON_NOT_SPECIFIED)
  51 --
  52 2.17.1
  53