https://github.com/python/cpython/commit/ce31ae5209c976d28d1c21fcbb06c0ae5e50a896
commit: ce31ae5209c976d28d1c21fcbb06c0ae5e50a896
branch: main
author: Jeroen Bogers <11465689+jbog...@users.noreply.github.com>
committer: sobolevn <m...@sobolevn.me>
date: 2025-04-18T22:59:37+03:00
summary:

gh-129719: Restore missing `socket.CAN_RAW_ERR_FILTER` on Linux (#129721)

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Peter Bierma <zintensity...@gmail.com>

files:
A Misc/NEWS.d/next/Library/2025-02-06-11-23-51.gh-issue-129719.Of6rvb.rst
M Doc/library/socket.rst
M Modules/socketmodule.c

diff --git a/Doc/library/socket.rst b/Doc/library/socket.rst
index 6b666753ceb935..2b1fae57c668de 100644
--- a/Doc/library/socket.rst
+++ b/Doc/library/socket.rst
@@ -498,6 +498,9 @@ Constants
    .. versionchanged:: 3.11
       NetBSD support was added.
 
+   .. versionchanged:: next
+      Restored missing ``CAN_RAW_ERR_FILTER`` on Linux.
+
 .. data:: CAN_BCM
           CAN_BCM_*
 
diff --git 
a/Misc/NEWS.d/next/Library/2025-02-06-11-23-51.gh-issue-129719.Of6rvb.rst 
b/Misc/NEWS.d/next/Library/2025-02-06-11-23-51.gh-issue-129719.Of6rvb.rst
new file mode 100644
index 00000000000000..5e7a3e2f589a76
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2025-02-06-11-23-51.gh-issue-129719.Of6rvb.rst
@@ -0,0 +1 @@
+Fix missing :data:`!socket.CAN_RAW_ERR_FILTER` constant in the socket module 
on Linux systems. It was missing since Python 3.11.
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index 2326620dcff84f..f55a9583b8586a 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -8332,7 +8332,7 @@ socket_exec(PyObject *m)
 #endif
 #if defined(HAVE_LINUX_CAN_RAW_H) || defined(HAVE_NETCAN_CAN_H)
     ADD_INT_MACRO(m, CAN_RAW_FILTER);
-#ifdef CAN_RAW_ERR_FILTER
+#ifdef HAVE_LINUX_CAN_RAW_H
     ADD_INT_MACRO(m, CAN_RAW_ERR_FILTER);
 #endif
     ADD_INT_MACRO(m, CAN_RAW_LOOPBACK);

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