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- doc: nft.8: Extend monitor description by trace

Resolves: rhbz#2003707
This commit is contained in:
Phil Sutter 2021-11-11 11:13:37 +01:00
parent ff72da09da
commit 44cc91b788
2 changed files with 68 additions and 1 deletions
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63
0018-doc-nft.8-Extend-monitor-description-by-trace.patch Normal file
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@ -0,0 +1,63 @@
From 7f5707d93a62cf7474d94e038188a0a8ae2924e7 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Wed, 19 May 2021 13:12:48 +0200
Subject: [PATCH] doc: nft.8: Extend monitor description by trace
Briefly describe 'nft monitor trace' command functionality.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 2acf8b2caea19d8abd46d475a908f8d6afb33aa0)
---
doc/nft.txt | 25 ++++++++++++++++++++++---
1 file changed, 22 insertions(+), 3 deletions(-)
diff --git a/doc/nft.txt b/doc/nft.txt
index 2642d8903787f..7b3c70d82a127 100644
--- a/doc/nft.txt
+++ b/doc/nft.txt
@@ -805,13 +805,26 @@ These are some additional commands included in nft.
MONITOR
~~~~~~~~
The monitor command allows you to listen to Netlink events produced by the
-nf_tables subsystem, related to creation and deletion of objects. When they
+nf_tables subsystem. These are either related to creation and deletion of
+objects or to packets for which *meta nftrace* was enabled. When they
occur, nft will print to stdout the monitored events in either JSON or
native nft format. +
-To filter events related to a concrete object, use one of the keywords 'tables', 'chains', 'sets', 'rules', 'elements', 'ruleset'. +
+[verse]
+____
+*monitor* [*new* | *destroy*] 'MONITOR_OBJECT'
+*monitor* *trace*
+
+'MONITOR_OBJECT' := *tables* | *chains* | *sets* | *rules* | *elements* | *ruleset*
+____
-To filter events related to a concrete action, use keyword 'new' or 'destroy'.
+To filter events related to a concrete object, use one of the keywords in
+'MONITOR_OBJECT'.
+
+To filter events related to a concrete action, use keyword *new* or *destroy*.
+
+The second form of invocation takes no further options and exclusively prints
+events generated for packets with *nftrace* enabled.
Hit ^C to finish the monitor operation.
@@ -835,6 +848,12 @@ Hit ^C to finish the monitor operation.
% nft monitor ruleset
---------------------
+.Trace incoming packets from host 10.0.0.1
+------------------------------------------
+% nft add rule filter input ip saddr 10.0.0.1 meta nftrace set 1
+% nft monitor trace
+------------------------------------------
+
ERROR REPORTING
---------------
When an error is detected, nft shows the line(s) containing the error, the
--
2.33.0

6
nftables.spec
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@ -1,6 +1,6 @@
Name: nftables
Version: 0.9.8
Release: 8%{?dist}
Release: 9%{?dist}
# Upstream released a 0.100 version, then 0.4. Need Epoch to get back on track.
Epoch: 1
Summary: Netfilter Tables userspace utillites
@ -31,6 +31,7 @@ Patch14: 0014-src-add-xzalloc_array-and-use-it-to-allocate-the-exp.patch
Patch15: 0015-json-init-parser-state-for-every-new-buffer-file.patch
Patch16: 0016-segtree-Fix-segfault-when-restoring-a-huge-interval-.patch
Patch17: 0017-tests-cover-baecd1cf2685-segtree-Fix-segfault-when-r.patch
Patch18: 0018-doc-nft.8-Extend-monitor-description-by-trace.patch
#BuildRequires: autogen
#BuildRequires: autoconf
@ -140,6 +141,9 @@ sed -i -e 's/\(sofile=\)".*"/\1"'$sofile'"/' \
%{python3_sitelib}/nftables/
%changelog
* Thu Nov 11 2021 Phil Sutter <psutter@redhat.com> - 1:0.9.8-9
- doc: nft.8: Extend monitor description by trace
* Fri Nov 05 2021 Phil Sutter <psutter@redhat.com> - 1:0.9.8-8
- tests: cover baecd1cf2685 ("segtree: Fix segfault when restoring a huge interval set")
- segtree: Fix segfault when restoring a huge interval set