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Message-Id: <1419552606-21516-1-git-send-email-vadim4j@gmail.com>
Date: Fri, 26 Dec 2014 02:10:06 +0200
From: Vadim Kochan <vadim4j@...il.com>
To: netdev@...r.kernel.org
Cc: Vadim Kochan <vadim4j@...il.com>
Subject: [PATCH iproute2] tc class: Show classes as ASCII graph
From: Vadim Kochan <vadim4j@...il.com>
Added new '-g[raph]' option which shows classes in the graph view.
Meanwhile only generic stats info output is supported.
e.g.:
$ tc/tc -g class show dev tap0
+---(1:2) htb rate 6Mbit ceil 6Mbit burst 15Kb cburst 1599b
| +---(1:40) htb prio 0 rate 5Mbit ceil 5Mbit burst 15Kb cburst 1600b
| +---(1:50) htb rate 3Mbit ceil 6Mbit burst 15Kb cburst 1599b
| | +---(1:51) htb prio 0 rate 1Kbit ceil 6Mbit burst 15Kb cburst 1599b
| |
| +---(1:60) htb prio 0 rate 1Kbit ceil 6Mbit burst 15Kb cburst 1599b
|
+---(1:1) htb rate 6Mbit ceil 6Mbit burst 15Kb cburst 1599b
+---(1:10) htb prio 0 rate 5Mbit ceil 5Mbit burst 15Kb cburst 1600b
+---(1:20) htb prio 0 rate 3Mbit ceil 6Mbit burst 15Kb cburst 1599b
+---(1:30) htb prio 0 rate 1Kbit ceil 6Mbit burst 15Kb cburst 1599b
$ tc/tc -g -s class show dev tap0
+---(1:2) htb rate 6Mbit ceil 6Mbit burst 15Kb cburst 1599b
| | Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
| | rate 0bit 0pps backlog 0b 0p requeues 0
| |
| +---(1:40) htb prio 0 rate 5Mbit ceil 5Mbit burst 15Kb cburst 1600b
| | Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
| | rate 0bit 0pps backlog 0b 0p requeues 0
| |
| +---(1:50) htb rate 3Mbit ceil 6Mbit burst 15Kb cburst 1599b
| | | Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
| | | rate 0bit 0pps backlog 0b 0p requeues 0
| | |
| | +---(1:51) htb prio 0 rate 1Kbit ceil 6Mbit burst 15Kb cburst 1599b
| | Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
| | rate 0bit 0pps backlog 0b 0p requeues 0
| |
| +---(1:60) htb prio 0 rate 1Kbit ceil 6Mbit burst 15Kb cburst 1599b
| Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
| rate 0bit 0pps backlog 0b 0p requeues 0
|
+---(1:1) htb rate 6Mbit ceil 6Mbit burst 15Kb cburst 1599b
| Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
| rate 0bit 0pps backlog 0b 0p requeues 0
|
+---(1:10) htb prio 0 rate 5Mbit ceil 5Mbit burst 15Kb cburst 1600b
| Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
| rate 0bit 0pps backlog 0b 0p requeues 0
|
+---(1:20) htb prio 0 rate 3Mbit ceil 6Mbit burst 15Kb cburst 1599b
| Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
| rate 0bit 0pps backlog 0b 0p requeues 0
|
+---(1:30) htb prio 0 rate 1Kbit ceil 6Mbit burst 15Kb cburst 1599b
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
rate 0bit 0pps backlog 0b 0p requeues 0
Signed-off-by: Vadim Kochan <vadim4j@...il.com>
---
tc/tc.c | 5 +-
tc/tc_class.c | 167 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
tc/tc_common.h | 2 +
3 files changed, 171 insertions(+), 3 deletions(-)
diff --git a/tc/tc.c b/tc/tc.c
index 9b50e74..25a1c68 100644
--- a/tc/tc.c
+++ b/tc/tc.c
@@ -34,8 +34,9 @@ int show_stats = 0;
int show_details = 0;
int show_raw = 0;
int show_pretty = 0;
-int batch_mode = 0;
+int show_graph = 0;
+int batch_mode = 0;
int resolve_hosts = 0;
int use_iec = 0;
int force = 0;
@@ -278,6 +279,8 @@ int main(int argc, char **argv)
++show_raw;
} else if (matches(argv[1], "-pretty") == 0) {
++show_pretty;
+ } else if (matches(argv[1], "-graph") == 0) {
+ show_graph = 1;
} else if (matches(argv[1], "-Version") == 0) {
printf("tc utility, iproute2-ss%s\n", SNAPSHOT);
return 0;
diff --git a/tc/tc_class.c b/tc/tc_class.c
index ba7869b..877048a 100644
--- a/tc/tc_class.c
+++ b/tc/tc_class.c
@@ -24,6 +24,21 @@
#include "utils.h"
#include "tc_util.h"
#include "tc_common.h"
+#include "hlist.h"
+
+struct graph_node {
+ struct hlist_node hlist;
+ __u32 id;
+ __u32 parent_id;
+ struct graph_node *parent_node;
+ struct graph_node *right_node;
+ void *data;
+ int data_len;
+ int nodes_count;
+};
+
+static struct hlist_head cls_list = {};
+static struct hlist_head root_cls_list = {};
static void usage(void);
@@ -148,13 +163,152 @@ int filter_ifindex;
__u32 filter_qdisc;
__u32 filter_classid;
+static void graph_node_add(__u32 parent_id, __u32 id, void *data,
+ int len)
+{
+ struct graph_node *node = malloc(sizeof(struct graph_node));
+
+ memset(node, 0, sizeof(*node));
+ node->id = id;
+ node->parent_id = parent_id;
+
+ if (data && len) {
+ node->data = malloc(len);
+ node->data_len = len;
+ memcpy(node->data, data, len);
+ }
+
+ if (parent_id == TC_H_ROOT)
+ hlist_add_head(&node->hlist, &root_cls_list);
+ else
+ hlist_add_head(&node->hlist, &cls_list);
+}
+
+static void graph_indent(char *buf, struct graph_node *node, int is_newline,
+ int add_spaces)
+{
+ char spaces[100] = {0};
+
+ while (node && node->parent_node) {
+ node->parent_node->right_node = node;
+ node = node->parent_node;
+ }
+ while (node && node->right_node) {
+ if (node->hlist.next)
+ strcat(buf, "| ");
+ else
+ strcat(buf, " ");
+
+ node = node->right_node;
+ }
+
+ if (is_newline) {
+ if (node->hlist.next && node->nodes_count)
+ strcat(buf, "| |");
+ else if (node->hlist.next)
+ strcat(buf, "| ");
+ else if (node->nodes_count)
+ strcat(buf, " |");
+ else if (!node->hlist.next)
+ strcat(buf, " ");
+ }
+ if (add_spaces > 0) {
+ sprintf(spaces, "%-*s", add_spaces, "");
+ strcat(buf, spaces);
+ }
+}
+
+static void graph_cls_show(FILE *fp, char *buf, struct hlist_head *root_list,
+ int level)
+{
+ struct hlist_node *n, *tmp_cls;
+ char cls_id_str[256] = {};
+ struct rtattr *tb[TCA_MAX + 1] = {};
+ struct qdisc_util *q;
+ char str[100] = {};
+
+ hlist_for_each_safe(n, tmp_cls, root_list) {
+ struct hlist_node *c, *tmp_chld;
+ struct hlist_head children = {};
+ struct graph_node *cls = container_of(n, struct graph_node,
+ hlist);
+
+ hlist_for_each_safe(c, tmp_chld, &cls_list) {
+ struct graph_node *child = container_of(c,
+ struct graph_node, hlist);
+
+ if (cls->id == child->parent_id) {
+ hlist_del(c);
+ hlist_add_head(c, &children);
+ cls->nodes_count++;
+ child->parent_node = cls;
+ }
+ }
+
+ graph_indent(buf, cls, 0, 0);
+
+ print_tc_classid(cls_id_str, sizeof(cls_id_str), cls->id);
+ sprintf(str, "+---(%s)", cls_id_str);
+ strcat(buf, str);
+
+ parse_rtattr(tb, TCA_MAX, (struct rtattr *)cls->data,
+ cls->data_len);
+
+ if (tb[TCA_KIND] == NULL) {
+ strcat(buf, " [unknown qdisc kind] ");
+ } else {
+ const char *kind = rta_getattr_str(tb[TCA_KIND]);
+
+ sprintf(str, " %s ", kind);
+ strcat(buf, str);
+ fprintf(fp, "%s", buf);
+ buf[0] = '\0';
+
+ q = get_qdisc_kind(kind);
+ if (q && q->print_copt) {
+ q->print_copt(q, fp, tb[TCA_OPTIONS]);
+ }
+ if (q && show_stats) {
+ int cls_indent = strlen(q->id) - 2 +
+ strlen(cls_id_str);
+ struct rtattr *stats = NULL;
+
+ graph_indent(buf, cls, 1, cls_indent);
+
+ if (tb[TCA_STATS] || tb[TCA_STATS2]) {
+ fprintf(fp, "\n");
+ print_tcstats_attr(fp, tb, buf, &stats);
+ buf[0] = '\0';
+ }
+ if (cls->hlist.next || cls->nodes_count) {
+ strcat(buf, "\n");
+ graph_indent(buf, cls, 1, 0);
+ }
+ }
+ }
+ free(cls->data);
+ fprintf(fp, "%s\n", buf);
+ buf[0] = '\0';
+
+ graph_cls_show(fp, buf, &children, level + 1);
+ if (!cls->hlist.next) {
+ graph_indent(buf, cls, 0, 0);
+ strcat(buf, "\n");
+ }
+
+ fprintf(fp, "%s", buf);
+ buf[0] = '\0';
+ free(cls);
+ }
+}
+
int print_class(const struct sockaddr_nl *who,
struct nlmsghdr *n, void *arg)
{
FILE *fp = (FILE*)arg;
struct tcmsg *t = NLMSG_DATA(n);
int len = n->nlmsg_len;
- struct rtattr * tb[TCA_MAX+1];
+ struct rtattr *tb[TCA_MAX + 1] = {};
struct qdisc_util *q;
char abuf[256];
@@ -167,13 +321,18 @@ int print_class(const struct sockaddr_nl *who,
fprintf(stderr, "Wrong len %d\n", len);
return -1;
}
+
+ if (show_graph) {
+ graph_node_add(t->tcm_parent, t->tcm_handle, TCA_RTA(t), len);
+ return 0;
+ }
+
if (filter_qdisc && TC_H_MAJ(t->tcm_handle^filter_qdisc))
return 0;
if (filter_classid && t->tcm_handle != filter_classid)
return 0;
- memset(tb, 0, sizeof(tb));
parse_rtattr(tb, TCA_MAX, TCA_RTA(t), len);
if (tb[TCA_KIND] == NULL) {
@@ -236,6 +395,7 @@ static int tc_class_list(int argc, char **argv)
{
struct tcmsg t;
char d[16];
+ char buf[1024] = {0};
memset(&t, 0, sizeof(t));
t.tcm_family = AF_UNSPEC;
@@ -306,6 +466,9 @@ static int tc_class_list(int argc, char **argv)
return 1;
}
+ if (show_graph)
+ graph_cls_show(stdout, &buf[0], &root_cls_list, 0);
+
return 0;
}
diff --git a/tc/tc_common.h b/tc/tc_common.h
index 4f88856..ea16f7f 100644
--- a/tc/tc_common.h
+++ b/tc/tc_common.h
@@ -19,3 +19,5 @@ extern int parse_estimator(int *p_argc, char ***p_argv, struct tc_estimator *est
struct tc_sizespec;
extern int parse_size_table(int *p_argc, char ***p_argv, struct tc_sizespec *s);
extern int check_size_table_opts(struct tc_sizespec *s);
+
+extern int show_graph;
--
2.1.3
--
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