From: Phil Sutter <phil@nwl.cc>
To: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: netfilter-devel@vger.kernel.org
Subject: [iptables PATCH 02/12] ebtables-save: Fix counter formatting
Date: Sat, 20 Jul 2019 18:30:16 +0200 [thread overview]
Message-ID: <20190720163026.15410-3-phil@nwl.cc> (raw)
In-Reply-To: <20190720163026.15410-1-phil@nwl.cc>
The initial problem was 'ebtables-save -c' printing iptables-style
counters but at the same time not disabling ebtables-style counter
output (which was even printed in wrong format for ebtables-save).
The code around counter output was complicated enough to motivate a
larger rework:
* Make FMT_C_COUNTS indicate the appended counter style for ebtables.
* Use FMT_EBT_SAVE to distinguish between '-c' style counters and the
legacy pcnt/bcnt ones.
Consequently, ebtables-save sets format to:
FMT_NOCOUNTS - for no counters
FMT_EBT_SAVE - for iptables-style counters
FMT_EBT_SAVE | FMT_C_COUNTS - for '-c' style counters
For regular ebtables, list_rules() always sets FMT_C_COUNTS
(iptables-style counters are never used there) and FMT_NOCOUNTS if no
counters are requested.
The big plus is if neither FMT_NOCOUNTS nor FMT_C_COUNTS is set,
iptables-style counters are to be printed - both in iptables and
ebtables. This allows to drop the ebtables-specific 'save_counters'
callback.
Signed-off-by: Phil Sutter <phil@nwl.cc>
---
iptables/nft-bridge.c | 39 +++--------
.../testcases/ebtables/0004-save-counters_0 | 67 +++++++++++++++++++
iptables/xtables-eb.c | 2 +-
iptables/xtables-save.c | 3 +-
4 files changed, 81 insertions(+), 30 deletions(-)
create mode 100755 iptables/tests/shell/testcases/ebtables/0004-save-counters_0
diff --git a/iptables/nft-bridge.c b/iptables/nft-bridge.c
index ddfbee165da93..2e4b309b86135 100644
--- a/iptables/nft-bridge.c
+++ b/iptables/nft-bridge.c
@@ -21,8 +21,6 @@
#include "nft-bridge.h"
#include "nft.h"
-static bool ebt_legacy_counter_fmt;
-
void ebt_cs_clean(struct iptables_command_state *cs)
{
struct ebt_match *m, *nm;
@@ -422,22 +420,6 @@ static void print_protocol(uint16_t ethproto, bool invert, unsigned int bitmask)
printf("%s ", ent->e_name);
}
-static void nft_bridge_save_counters(const void *data)
-{
- const char *ctr;
-
- if (ebt_legacy_counter_fmt)
- return;
-
- ctr = getenv("EBTABLES_SAVE_COUNTER");
- if (ctr) {
- ebt_legacy_counter_fmt = true;
- return;
- }
-
- save_counters(data);
-}
-
static void nft_bridge_save_rule(const void *data, unsigned int format)
{
const struct iptables_command_state *cs = data;
@@ -474,15 +456,16 @@ static void nft_bridge_save_rule(const void *data, unsigned int format)
cs->target->print(&cs->fw, cs->target->t, format & FMT_NUMERIC);
}
- if (format & FMT_EBT_SAVE)
- printf(" -c %"PRIu64" %"PRIu64"",
- (uint64_t)cs->counters.pcnt,
- (uint64_t)cs->counters.bcnt);
-
- if (!(format & FMT_NOCOUNTS))
- printf(" , pcnt = %"PRIu64" -- bcnt = %"PRIu64"",
- (uint64_t)cs->counters.pcnt,
- (uint64_t)cs->counters.bcnt);
+ if ((format & (FMT_NOCOUNTS | FMT_C_COUNTS)) == FMT_C_COUNTS) {
+ if (format & FMT_EBT_SAVE)
+ printf(" -c %"PRIu64" %"PRIu64"",
+ (uint64_t)cs->counters.pcnt,
+ (uint64_t)cs->counters.bcnt);
+ else
+ printf(" , pcnt = %"PRIu64" -- bcnt = %"PRIu64"",
+ (uint64_t)cs->counters.pcnt,
+ (uint64_t)cs->counters.bcnt);
+ }
if (!(format & FMT_NONEWLINE))
fputc('\n', stdout);
@@ -763,7 +746,7 @@ struct nft_family_ops nft_family_ops_bridge = {
.print_header = nft_bridge_print_header,
.print_rule = nft_bridge_print_rule,
.save_rule = nft_bridge_save_rule,
- .save_counters = nft_bridge_save_counters,
+ .save_counters = save_counters,
.save_chain = nft_bridge_save_chain,
.post_parse = NULL,
.rule_to_cs = nft_rule_to_ebtables_command_state,
diff --git a/iptables/tests/shell/testcases/ebtables/0004-save-counters_0 b/iptables/tests/shell/testcases/ebtables/0004-save-counters_0
new file mode 100755
index 0000000000000..8348dc7ee231f
--- /dev/null
+++ b/iptables/tests/shell/testcases/ebtables/0004-save-counters_0
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+set -e
+
+# there is no legacy backend to test
+[[ $XT_MULTI == */xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
+
+$XT_MULTI ebtables --init-table
+$XT_MULTI ebtables -A FORWARD -i nodev123 -o nodev432 -j ACCEPT
+$XT_MULTI ebtables -A FORWARD -i nodev432 -o nodev123 -j ACCEPT
+
+EXPECT='Bridge table: filter
+
+Bridge chain: FORWARD, entries: 2, policy: ACCEPT
+-i nodev123 -o nodev432 -j ACCEPT
+-i nodev432 -o nodev123 -j ACCEPT'
+
+echo "ebtables -L FORWARD"
+diff -u <(echo -e "$EXPECT") <($XT_MULTI ebtables -L FORWARD)
+
+EXPECT='Bridge table: filter
+
+Bridge chain: FORWARD, entries: 2, policy: ACCEPT
+-i nodev123 -o nodev432 -j ACCEPT , pcnt = 0 -- bcnt = 0
+-i nodev432 -o nodev123 -j ACCEPT , pcnt = 0 -- bcnt = 0'
+
+echo "ebtables -L FORWARD --Lc"
+diff -u <(echo -e "$EXPECT") <($XT_MULTI ebtables -L FORWARD --Lc)
+
+EXPECT='*filter
+:INPUT ACCEPT
+:FORWARD ACCEPT
+:OUTPUT ACCEPT
+-A FORWARD -i nodev123 -o nodev432 -j ACCEPT
+-A FORWARD -i nodev432 -o nodev123 -j ACCEPT
+'
+
+echo "ebtables-save"
+diff -u <(echo -e "$EXPECT") <($XT_MULTI ebtables-save | grep -v '^#')
+
+EXPECT='*filter
+:INPUT ACCEPT
+:FORWARD ACCEPT
+:OUTPUT ACCEPT
+[0:0] -A FORWARD -i nodev123 -o nodev432 -j ACCEPT
+[0:0] -A FORWARD -i nodev432 -o nodev123 -j ACCEPT
+'
+
+echo "ebtables-save -c"
+diff -u <(echo -e "$EXPECT") <($XT_MULTI ebtables-save -c | grep -v '^#')
+
+export EBTABLES_SAVE_COUNTER=yes
+
+# -c flag overrides EBTABLES_SAVE_COUNTER variable
+echo "EBTABLES_SAVE_COUNTER=yes ebtables-save -c"
+diff -u <(echo -e "$EXPECT") <($XT_MULTI ebtables-save -c | grep -v '^#')
+
+EXPECT='*filter
+:INPUT ACCEPT
+:FORWARD ACCEPT
+:OUTPUT ACCEPT
+-A FORWARD -i nodev123 -o nodev432 -j ACCEPT -c 0 0
+-A FORWARD -i nodev432 -o nodev123 -j ACCEPT -c 0 0
+'
+
+echo "EBTABLES_SAVE_COUNTER=yes ebtables-save"
+diff -u <(echo -e "$EXPECT") <($XT_MULTI ebtables-save | grep -v '^#')
diff --git a/iptables/xtables-eb.c b/iptables/xtables-eb.c
index b8d89ad974a42..121ecbecd0b64 100644
--- a/iptables/xtables-eb.c
+++ b/iptables/xtables-eb.c
@@ -410,7 +410,7 @@ static int list_rules(struct nft_handle *h, const char *chain, const char *table
{
unsigned int format;
- format = FMT_OPTIONS;
+ format = FMT_OPTIONS | FMT_C_COUNTS;
if (verbose)
format |= FMT_VIA;
diff --git a/iptables/xtables-save.c b/iptables/xtables-save.c
index 98e004af4b1a4..3f389e8fdc234 100644
--- a/iptables/xtables-save.c
+++ b/iptables/xtables-save.c
@@ -273,7 +273,8 @@ static int __ebt_save(struct nft_handle *h, const char *tablename, bool counters
printf("*%s\n", tablename);
if (counters)
- format = ebt_legacy_counter_format ? FMT_EBT_SAVE : 0;
+ format = FMT_EBT_SAVE |
+ (ebt_legacy_counter_format ? FMT_C_COUNTS : 0);
/* Dump out chain names first,
* thereby preventing dependency conflicts */
--
2.22.0
next prev parent reply other threads:[~2019-07-20 16:31 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-20 16:30 [iptables PATCH 00/12] Larger xtables-save review Phil Sutter
2019-07-20 16:30 ` [iptables PATCH 01/12] ebtables: Fix error message for invalid parameters Phil Sutter
2019-07-20 16:30 ` Phil Sutter [this message]
2019-07-20 16:30 ` [iptables PATCH 03/12] xtables-save: Use argv[0] as program name Phil Sutter
2019-07-20 16:52 ` Phil Sutter
2019-07-21 18:44 ` Pablo Neira Ayuso
2019-07-20 16:30 ` [iptables PATCH 04/12] xtables-save: Unify *-save header/footer comments Phil Sutter
2019-07-20 16:30 ` [iptables PATCH 05/12] xtables-save: Fix table compatibility check Phil Sutter
2019-07-20 16:30 ` [iptables PATCH 06/12] nft: Make nft_for_each_table() more versatile Phil Sutter
2019-07-20 16:30 ` [iptables PATCH 07/12] xtables-save: Avoid mixed code and declarations Phil Sutter
2019-07-20 16:30 ` [iptables PATCH 08/12] xtables-save: Pass optstring/longopts to xtables_save_main() Phil Sutter
2019-07-20 16:30 ` [iptables PATCH 09/12] xtables-save: Make COMMIT line optional Phil Sutter
2019-07-20 19:29 ` Florian Westphal
2019-07-20 20:11 ` Phil Sutter
2019-07-20 20:13 ` Florian Westphal
2019-07-20 20:15 ` Phil Sutter
2019-07-20 16:30 ` [iptables PATCH 10/12] xtables-save: Pass format flags to do_output() Phil Sutter
2019-07-20 16:30 ` [iptables PATCH 11/12] arptables-save: Merge into xtables_save_main() Phil Sutter
2019-07-20 16:30 ` [iptables PATCH 12/12] ebtables-save: " Phil Sutter
2019-07-20 19:35 ` [iptables PATCH 00/12] Larger xtables-save review Florian Westphal
2019-07-21 18:56 ` Pablo Neira Ayuso
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