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Message-Id: <20210418120137.2605522-7-razor@blackwall.org>
Date: Sun, 18 Apr 2021 15:01:37 +0300
From: Nikolay Aleksandrov <razor@...ckwall.org>
To: netdev@...r.kernel.org
Cc: roopa@...dia.com, dsahern@...il.com,
Nikolay Aleksandrov <nikolay@...dia.com>
Subject: [PATCH iproute2-next 6/6] bridge: monitor: add support for vlan monitoring
From: Nikolay Aleksandrov <nikolay@...dia.com>
Add support for vlan activity monitoring, we display vlan notifications on
vlan add/del/options change. The man page and help are also updated
accordingly.
Signed-off-by: Nikolay Aleksandrov <nikolay@...dia.com>
---
bridge/br_common.h | 2 +-
bridge/mdb.c | 2 +-
bridge/monitor.c | 19 ++++++++++++++++++-
bridge/vlan.c | 15 +++++++++++++--
man/man8/bridge.8 | 4 ++--
5 files changed, 35 insertions(+), 7 deletions(-)
diff --git a/bridge/br_common.h b/bridge/br_common.h
index 43870546ff28..b9adafd98dea 100644
--- a/bridge/br_common.h
+++ b/bridge/br_common.h
@@ -12,7 +12,7 @@ int print_mdb_mon(struct nlmsghdr *n, void *arg);
int print_fdb(struct nlmsghdr *n, void *arg);
void print_stp_state(__u8 state);
int parse_stp_state(const char *arg);
-int print_vlan_rtm(struct nlmsghdr *n, void *arg);
+int print_vlan_rtm(struct nlmsghdr *n, void *arg, bool monitor);
int do_fdb(int argc, char **argv);
int do_mdb(int argc, char **argv);
diff --git a/bridge/mdb.c b/bridge/mdb.c
index ef89258bc5c3..b427d878677f 100644
--- a/bridge/mdb.c
+++ b/bridge/mdb.c
@@ -16,9 +16,9 @@
#include <arpa/inet.h>
#include "libnetlink.h"
+#include "utils.h"
#include "br_common.h"
#include "rt_names.h"
-#include "utils.h"
#include "json_print.h"
#ifndef MDBA_RTA
diff --git a/bridge/monitor.c b/bridge/monitor.c
index 08439a60288a..88f52f52f084 100644
--- a/bridge/monitor.c
+++ b/bridge/monitor.c
@@ -31,7 +31,7 @@ static int prefix_banner;
static void usage(void)
{
- fprintf(stderr, "Usage: bridge monitor [file | link | fdb | mdb | all]\n");
+ fprintf(stderr, "Usage: bridge monitor [file | link | fdb | mdb | vlan | all]\n");
exit(-1);
}
@@ -67,6 +67,12 @@ static int accept_msg(struct rtnl_ctrl_data *ctrl,
print_nlmsg_timestamp(fp, n);
return 0;
+ case RTM_NEWVLAN:
+ case RTM_DELVLAN:
+ if (prefix_banner)
+ fprintf(fp, "[VLAN]");
+ return print_vlan_rtm(n, arg, true);
+
default:
return 0;
}
@@ -79,6 +85,7 @@ int do_monitor(int argc, char **argv)
int llink = 0;
int lneigh = 0;
int lmdb = 0;
+ int lvlan = 0;
rtnl_close(&rth);
@@ -95,8 +102,12 @@ int do_monitor(int argc, char **argv)
} else if (matches(*argv, "mdb") == 0) {
lmdb = 1;
groups = 0;
+ } else if (matches(*argv, "vlan") == 0) {
+ lvlan = 1;
+ groups = 0;
} else if (strcmp(*argv, "all") == 0) {
groups = ~RTMGRP_TC;
+ lvlan = 1;
prefix_banner = 1;
} else if (matches(*argv, "help") == 0) {
usage();
@@ -134,6 +145,12 @@ int do_monitor(int argc, char **argv)
if (rtnl_open(&rth, groups) < 0)
exit(1);
+
+ if (lvlan && rtnl_add_nl_group(&rth, RTNLGRP_BRVLAN) < 0) {
+ fprintf(stderr, "Failed to add bridge vlan group to list\n");
+ exit(1);
+ }
+
ll_init_map(&rth);
if (rtnl_listen(&rth, accept_msg, stdout) < 0)
diff --git a/bridge/vlan.c b/bridge/vlan.c
index c681e14189b8..9bb9e28d11bb 100644
--- a/bridge/vlan.c
+++ b/bridge/vlan.c
@@ -621,7 +621,7 @@ static int print_vlan_stats(struct nlmsghdr *n, void *arg)
return 0;
}
-int print_vlan_rtm(struct nlmsghdr *n, void *arg)
+int print_vlan_rtm(struct nlmsghdr *n, void *arg, bool monitor)
{
struct rtattr *vtb[BRIDGE_VLANDB_ENTRY_MAX + 1], *a;
struct br_vlan_msg *bvm = NLMSG_DATA(n);
@@ -648,6 +648,12 @@ int print_vlan_rtm(struct nlmsghdr *n, void *arg)
if (filter_index && filter_index != bvm->ifindex)
return 0;
+ if (n->nlmsg_type == RTM_DELVLAN)
+ print_bool(PRINT_ANY, "deleted", "Deleted ", true);
+
+ if (monitor)
+ vlan_rtm_cur_ifidx = -1;
+
if (vlan_rtm_cur_ifidx == -1 || vlan_rtm_cur_ifidx != bvm->ifindex) {
if (vlan_rtm_cur_ifidx != -1)
close_vlan_port();
@@ -720,6 +726,11 @@ int print_vlan_rtm(struct nlmsghdr *n, void *arg)
return 0;
}
+static int print_vlan_rtm_filter(struct nlmsghdr *n, void *arg)
+{
+ return print_vlan_rtm(n, arg, false);
+}
+
static int vlan_show(int argc, char **argv, int subject)
{
char *filter_dev = NULL;
@@ -764,7 +775,7 @@ static int vlan_show(int argc, char **argv, int subject)
printf("\n");
}
- ret = rtnl_dump_filter(&rth, print_vlan_rtm, &subject);
+ ret = rtnl_dump_filter(&rth, print_vlan_rtm_filter, &subject);
if (ret < 0) {
fprintf(stderr, "Dump terminated\n");
exit(1);
diff --git a/man/man8/bridge.8 b/man/man8/bridge.8
index 9c8ebac3c6aa..eec7df4383bc 100644
--- a/man/man8/bridge.8
+++ b/man/man8/bridge.8
@@ -153,7 +153,7 @@ bridge \- show / manipulate bridge addresses and devices
.IR DEV " ]"
.ti -8
-.BR "bridge monitor" " [ " all " | " neigh " | " link " | " mdb " ]"
+.BR "bridge monitor" " [ " all " | " neigh " | " link " | " mdb " | " vlan " ]"
.SH OPTIONS
@@ -911,7 +911,7 @@ command is the first in the command line and then the object list follows:
.I OBJECT-LIST
is the list of object types that we want to monitor.
It may contain
-.BR link ", " fdb ", and " mdb "."
+.BR link ", " fdb ", " vlan " and " mdb "."
If no
.B file
argument is given,
--
2.30.2
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