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Message-Id: <20200427235051.250058-7-bpoirier@cumulusnetworks.com>
Date: Tue, 28 Apr 2020 08:50:50 +0900
From: Benjamin Poirier <bpoirier@...ulusnetworks.com>
To: netdev@...r.kernel.org
Subject: [PATCH iproute2 6/7] bridge: Align output columns
Use fixed column widths to improve readability.
Before:
root@...d:/src/iproute2# ./bridge/bridge vlan tunnelshow
port vlan-id tunnel-id
vx0 1000 1000
1010-1020 1010-1020
1030 65556
vx-longname 10 10
After:
root@...d:/src/iproute2# ./bridge/bridge vlan tunnelshow
port vlan-id tunnel-id
vx0 1000 1000
1010-1020 1010-1020
1030 65556
vx-longname 10 10
Signed-off-by: Benjamin Poirier <bpoirier@...ulusnetworks.com>
---
bridge/vlan.c | 73 ++++++++++++++++++++++++++++++++++++---------------
1 file changed, 52 insertions(+), 21 deletions(-)
diff --git a/bridge/vlan.c b/bridge/vlan.c
index 1ca7322a..a50a4fc9 100644
--- a/bridge/vlan.c
+++ b/bridge/vlan.c
@@ -22,6 +22,11 @@ enum vlan_show_subject {
VLAN_SHOW_TUNNELINFO,
};
+#define VLAN_ID_LEN 9
+
+#define __stringify_1(x...) #x
+#define __stringify(x...) __stringify_1(x)
+
static void usage(void)
{
fprintf(stderr,
@@ -256,11 +261,11 @@ static int filter_vlan_check(__u16 vid, __u16 flags)
return 1;
}
-static void open_vlan_port(int ifi_index, const char *fmt,
- enum vlan_show_subject subject)
+static void open_vlan_port(int ifi_index, enum vlan_show_subject subject)
{
open_json_object(NULL);
- print_color_string(PRINT_ANY, COLOR_IFNAME, "ifname", fmt,
+ print_color_string(PRINT_ANY, COLOR_IFNAME, "ifname",
+ "%-" __stringify(IFNAMSIZ) "s ",
ll_index_to_name(ifi_index));
open_json_array(PRINT_JSON,
subject == VLAN_SHOW_VLAN ? "vlans": "tunnels");
@@ -272,16 +277,18 @@ static void close_vlan_port(void)
close_json_object();
}
-static void print_range(const char *name, __u32 start, __u32 id)
+static unsigned int print_range(const char *name, __u32 start, __u32 id)
{
char end[64];
+ int width;
snprintf(end, sizeof(end), "%sEnd", name);
- print_uint(PRINT_ANY, name, "\t %u", start);
+ width = print_uint(PRINT_ANY, name, "%u", start);
if (start != id)
- print_uint(PRINT_ANY, end, "-%u", id);
+ width += print_uint(PRINT_ANY, end, "-%u", id);
+ return width;
}
static void print_vlan_tunnel_info(struct rtattr *tb, int ifindex)
@@ -297,6 +304,7 @@ static void print_vlan_tunnel_info(struct rtattr *tb, int ifindex)
__u32 tunnel_id = 0;
__u16 tunnel_vid = 0;
__u16 tunnel_flags = 0;
+ unsigned int width;
int vcheck_ret;
if (i->rta_type != IFLA_BRIDGE_VLAN_TUNNEL_INFO)
@@ -331,12 +339,25 @@ static void print_vlan_tunnel_info(struct rtattr *tb, int ifindex)
continue;
if (!opened) {
- open_vlan_port(ifindex, "%s", VLAN_SHOW_TUNNELINFO);
+ open_vlan_port(ifindex, VLAN_SHOW_TUNNELINFO);
opened = true;
+ } else {
+ print_string(PRINT_FP, NULL,
+ "%-" __stringify(IFNAMSIZ) "s ", "");
}
open_json_object(NULL);
- print_range("vlan", last_vid_start, tunnel_vid);
+ width = print_range("vlan", last_vid_start, tunnel_vid);
+ if (width <= VLAN_ID_LEN) {
+ char buf[VLAN_ID_LEN + 1];
+
+ snprintf(buf, sizeof(buf), "%-*s",
+ VLAN_ID_LEN - width, "");
+ print_string(PRINT_FP, NULL, "%s ", buf);
+ } else {
+ fprintf(stderr, "BUG: vlan range too wide, %u\n",
+ width);
+ }
print_range("tunid", last_tunid_start, tunnel_id);
close_json_object();
print_string(PRINT_FP, NULL, "%s", _SL_);
@@ -404,20 +425,23 @@ static void print_vlan_flags(__u16 flags)
static void print_one_vlan_stats(const struct bridge_vlan_xstats *vstats)
{
open_json_object(NULL);
- print_hu(PRINT_ANY, "vid", " %hu", vstats->vid);
+ print_hu(PRINT_ANY, "vid", "%hu", vstats->vid);
print_vlan_flags(vstats->flags);
+ print_nl();
- print_lluint(PRINT_ANY, "rx_bytes",
- "\n RX: %llu bytes",
+ print_string(PRINT_FP, NULL, "%-" __stringify(IFNAMSIZ) "s ", "");
+ print_lluint(PRINT_ANY, "rx_bytes", "RX: %llu bytes",
vstats->rx_bytes);
print_lluint(PRINT_ANY, "rx_packets", " %llu packets\n",
- vstats->rx_packets);
- print_lluint(PRINT_ANY, "tx_bytes",
- " TX: %llu bytes",
+ vstats->rx_packets);
+
+ print_string(PRINT_FP, NULL, "%-" __stringify(IFNAMSIZ) "s ", "");
+ print_lluint(PRINT_ANY, "tx_bytes", "TX: %llu bytes",
vstats->tx_bytes);
print_lluint(PRINT_ANY, "tx_packets", " %llu packets\n",
- vstats->tx_packets);
+ vstats->tx_packets);
+
close_json_object();
}
@@ -452,10 +476,11 @@ static void print_vlan_stats_attr(struct rtattr *attr, int ifindex)
/* found vlan stats, first time print the interface name */
if (!found_vlan) {
- open_vlan_port(ifindex, "%-16s", VLAN_SHOW_VLAN);
+ open_vlan_port(ifindex, VLAN_SHOW_VLAN);
found_vlan = true;
} else {
- print_string(PRINT_FP, NULL, "%-16s", "");
+ print_string(PRINT_FP, NULL,
+ "%-" __stringify(IFNAMSIZ) "s ", "");
}
print_one_vlan_stats(vstats);
}
@@ -534,9 +559,11 @@ static int vlan_show(int argc, char **argv, int subject)
}
if (!is_json_context()) {
- printf("port\tvlan-id");
+ printf("%-" __stringify(IFNAMSIZ) "s %-"
+ __stringify(VLAN_ID_LEN) "s", "port",
+ "vlan-id");
if (subject == VLAN_SHOW_TUNNELINFO)
- printf("\ttunnel-id");
+ printf(" tunnel-id");
printf("\n");
}
@@ -555,7 +582,8 @@ static int vlan_show(int argc, char **argv, int subject)
}
if (!is_json_context())
- printf("%-16s vlan-id\n", "port");
+ printf("%-" __stringify(IFNAMSIZ) "s vlan-id\n",
+ "port");
if (rtnl_dump_filter(&rth, print_vlan_stats, stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
@@ -604,8 +632,11 @@ void print_vlan_info(struct rtattr *tb, int ifindex)
continue;
if (!opened) {
- open_vlan_port(ifindex, "%s", VLAN_SHOW_VLAN);
+ open_vlan_port(ifindex, VLAN_SHOW_VLAN);
opened = true;
+ } else {
+ print_string(PRINT_FP, NULL, "%-"
+ __stringify(IFNAMSIZ) "s ", "");
}
open_json_object(NULL);
--
2.26.0
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