X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=tc%2Ftc_qdisc.c;h=361ca8aaddc631b53ec6be4e529bfcf07829b842;hb=aba5acdfdb347d2c21fc67d613d83d4430ca3937;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hpb=86fdf0e47be697587efcf9602cd1f952a1d73170;p=mirror_iproute2.git

diff --git a/tc/tc_qdisc.c b/tc/tc_qdisc.c
index e69de29b..361ca8aa 100644
--- a/tc/tc_qdisc.c
+++ b/tc/tc_qdisc.c
@@ -0,0 +1,353 @@
+/*
+ * tc_qdisc.c		"tc qdisc".
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *		J Hadi Salim: Extension to ingress
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+#include <math.h>
+
+#include "utils.h"
+#include "tc_util.h"
+#include "tc_common.h"
+
+static void usage(void) __attribute__((noreturn));
+
+static void usage(void)
+{
+	fprintf(stderr, "Usage: tc qdisc [ add | del | replace | change | get ] dev STRING\n");
+	fprintf(stderr, "       [ handle QHANDLE ] [ root | ingress | parent CLASSID ]\n");
+	fprintf(stderr, "       [ estimator INTERVAL TIME_CONSTANT ]\n");
+	fprintf(stderr, "       [ [ QDISC_KIND ] [ help | OPTIONS ] ]\n");
+	fprintf(stderr, "\n");
+	fprintf(stderr, "       tc qdisc show [ dev STRING ] [ingress]\n");
+	fprintf(stderr, "Where:\n");
+	fprintf(stderr, "QDISC_KIND := { [p|b]fifo | tbf | prio | cbq | red | etc. }\n");
+	fprintf(stderr, "OPTIONS := ... try tc qdisc add <desired QDISC_KIND> help\n");
+	exit(-1);
+}
+
+int tc_qdisc_modify(int cmd, unsigned flags, int argc, char **argv)
+{
+	struct rtnl_handle rth;
+	struct {
+		struct nlmsghdr 	n;
+		struct tcmsg 		t;
+		char   			buf[4096];
+	} req;
+	struct qdisc_util *q = NULL;
+	struct tc_estimator est;
+	char  d[16];
+	char  k[16];
+
+	memset(&req, 0, sizeof(req));
+	memset(&est, 0, sizeof(est));
+	memset(&d, 0, sizeof(d));
+	memset(&k, 0, sizeof(k));
+
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg));
+	req.n.nlmsg_flags = NLM_F_REQUEST|flags;
+	req.n.nlmsg_type = cmd;
+	req.t.tcm_family = AF_UNSPEC;
+
+	while (argc > 0) {
+		if (strcmp(*argv, "dev") == 0) {
+			NEXT_ARG();
+			if (d[0])
+				duparg("dev", *argv);
+			strncpy(d, *argv, sizeof(d)-1);
+		} else if (strcmp(*argv, "handle") == 0) {
+			__u32 handle;
+			if (req.t.tcm_handle)
+				duparg("handle", *argv);
+			NEXT_ARG();
+			if (get_qdisc_handle(&handle, *argv))
+				invarg(*argv, "invalid qdisc ID");
+			req.t.tcm_handle = handle;
+		} else if (strcmp(*argv, "root") == 0) {
+			if (req.t.tcm_parent) {
+				fprintf(stderr, "Error: \"root\" is duplicate parent ID\n");
+				exit(-1);
+			}
+			req.t.tcm_parent = TC_H_ROOT;
+#ifdef TC_H_INGRESS
+		} else if (strcmp(*argv, "ingress") == 0) {
+			if (req.t.tcm_parent) {
+				fprintf(stderr, "Error: \"ingress\" is a duplicate parent ID\n");
+				exit(-1);
+			}
+			req.t.tcm_parent = TC_H_INGRESS;
+			strncpy(k, "ingress", sizeof(k)-1);
+			q = get_qdisc_kind(k);
+			req.t.tcm_handle = 0xffff0000;
+
+			argc--; argv++;
+			break;
+#endif
+		} else if (strcmp(*argv, "parent") == 0) {
+			__u32 handle;
+			NEXT_ARG();
+			if (req.t.tcm_parent)
+				duparg("parent", *argv);
+			if (get_tc_classid(&handle, *argv))
+				invarg(*argv, "invalid parent ID");
+			req.t.tcm_parent = handle;
+		} else if (matches(*argv, "estimator") == 0) {
+			if (parse_estimator(&argc, &argv, &est))
+				return -1;
+		} else if (matches(*argv, "help") == 0) {
+			usage();
+		} else {
+			strncpy(k, *argv, sizeof(k)-1);
+
+			q = get_qdisc_kind(k);
+			argc--; argv++;
+			break;
+		}
+		argc--; argv++;
+	}
+
+	if (k[0])
+		addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1);
+	if (est.ewma_log)
+		addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est));
+
+	if (q) {
+		if (q->parse_qopt(q, argc, argv, &req.n))
+			exit(1);
+	} else {
+		if (argc) {
+			if (matches(*argv, "help") == 0)
+				usage();
+
+			fprintf(stderr, "Garbage instead of arguments \"%s ...\". Try \"tc qdisc help\".\n", *argv);
+			exit(-1);
+		}
+	}
+
+	if (rtnl_open(&rth, 0) < 0) {
+		fprintf(stderr, "Cannot open rtnetlink\n");
+		exit(1);
+	}
+
+	if (d[0])  {
+		int idx;
+
+		ll_init_map(&rth);
+
+		if ((idx = ll_name_to_index(d)) == 0) {
+			fprintf(stderr, "Cannot find device \"%s\"\n", d);
+			exit(1);
+		}
+		req.t.tcm_ifindex = idx;
+	}
+
+	if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
+		exit(2);
+
+	rtnl_close(&rth);
+	return 0;
+}
+
+void print_tcstats(FILE *fp, struct tc_stats *st)
+{
+	SPRINT_BUF(b1);
+
+	fprintf(fp, " Sent %llu bytes %u pkts (dropped %u, overlimits %u) ",
+		(unsigned long long)st->bytes, st->packets, st->drops, st->overlimits);
+	if (st->bps || st->pps || st->qlen || st->backlog) {
+		fprintf(fp, "\n ");
+		if (st->bps || st->pps) {
+			fprintf(fp, "rate ");
+			if (st->bps)
+				fprintf(fp, "%s ", sprint_rate(st->bps, b1));
+			if (st->pps)
+				fprintf(fp, "%upps ", st->pps);
+		}
+		if (st->qlen || st->backlog) {
+			fprintf(fp, "backlog ");
+			if (st->backlog)
+				fprintf(fp, "%s ", sprint_size(st->backlog, b1));
+			if (st->qlen)
+				fprintf(fp, "%up ", st->qlen);
+		}
+	}
+}
+
+static int filter_ifindex;
+
+int print_qdisc(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 qdisc_util *q;
+	char abuf[256];
+
+	if (n->nlmsg_type != RTM_NEWQDISC && n->nlmsg_type != RTM_DELQDISC) {
+		fprintf(stderr, "Not a qdisc\n");
+		return 0;
+	}
+	len -= NLMSG_LENGTH(sizeof(*t));
+	if (len < 0) {
+		fprintf(stderr, "Wrong len %d\n", len);
+		return -1;
+	}
+
+	if (filter_ifindex && filter_ifindex != t->tcm_ifindex)
+		return 0;
+
+	memset(tb, 0, sizeof(tb));
+	parse_rtattr(tb, TCA_MAX, TCA_RTA(t), len);
+
+	if (tb[TCA_KIND] == NULL) {
+		fprintf(stderr, "NULL kind\n");
+		return -1;
+	}
+
+	if (n->nlmsg_type == RTM_DELQDISC)
+		fprintf(fp, "deleted ");
+
+	fprintf(fp, "qdisc %s %x: ", (char*)RTA_DATA(tb[TCA_KIND]), t->tcm_handle>>16);
+	if (filter_ifindex == 0)
+		fprintf(fp, "dev %s ", ll_index_to_name(t->tcm_ifindex));
+	if (t->tcm_parent == TC_H_ROOT)
+		fprintf(fp, "root ");
+	else if (t->tcm_parent) {
+		print_tc_classid(abuf, sizeof(abuf), t->tcm_parent);
+		fprintf(fp, "parent %s ", abuf);
+	}
+	if (t->tcm_info != 1) {
+		fprintf(fp, "refcnt %d ", t->tcm_info);
+	}
+	q = get_qdisc_kind(RTA_DATA(tb[TCA_KIND]));
+	if (tb[TCA_OPTIONS]) {
+		if (q)
+			q->print_qopt(q, fp, tb[TCA_OPTIONS]);
+		else
+			fprintf(fp, "[cannot parse qdisc parameters]");
+	}
+	fprintf(fp, "\n");
+	if (show_stats) {
+		if (tb[TCA_STATS]) {
+			if (RTA_PAYLOAD(tb[TCA_STATS]) < sizeof(struct tc_stats))
+				fprintf(fp, "statistics truncated");
+			else {
+				struct tc_stats st;
+				memcpy(&st, RTA_DATA(tb[TCA_STATS]), sizeof(st));
+				print_tcstats(fp, &st);
+				fprintf(fp, "\n");
+			}
+		}
+		if (q && tb[TCA_XSTATS]) {
+			q->print_xstats(q, fp, tb[TCA_XSTATS]);
+			fprintf(fp, "\n");
+		}
+	}
+	fflush(fp);
+	return 0;
+}
+
+
+int tc_qdisc_list(int argc, char **argv)
+{
+	struct tcmsg t;
+	struct rtnl_handle rth;
+	char d[16];
+
+	memset(&t, 0, sizeof(t));
+	t.tcm_family = AF_UNSPEC;
+	memset(&d, 0, sizeof(d));
+	
+	while (argc > 0) {
+		if (strcmp(*argv, "dev") == 0) {
+			NEXT_ARG();
+			strncpy(d, *argv, sizeof(d)-1);
+#ifdef TC_H_INGRESS
+                } else if (strcmp(*argv, "ingress") == 0) {
+                             if (t.tcm_parent) {
+                                     fprintf(stderr, "Duplicate parent ID\n");
+                                     usage();
+                             }
+                             t.tcm_parent = TC_H_INGRESS;
+#endif
+		} else if (matches(*argv, "help") == 0) {
+			usage();
+		} else {
+			fprintf(stderr, "What is \"%s\"? Try \"tc qdisc help\".\n", *argv);
+			return -1;
+		}
+
+		argc--; argv++;
+	}
+
+	if (rtnl_open(&rth, 0) < 0) {
+		fprintf(stderr, "Cannot open rtnetlink\n");
+		exit(1);
+	}
+
+	ll_init_map(&rth);
+
+	if (d[0]) {
+		if ((t.tcm_ifindex = ll_name_to_index(d)) == 0) {
+			fprintf(stderr, "Cannot find device \"%s\"\n", d);
+			exit(1);
+		}
+		filter_ifindex = t.tcm_ifindex;
+	}
+
+	if (rtnl_dump_request(&rth, RTM_GETQDISC, &t, sizeof(t)) < 0) {
+		perror("Cannot send dump request");
+		exit(1);
+	}
+
+	if (rtnl_dump_filter(&rth, print_qdisc, stdout, NULL, NULL) < 0) {
+		fprintf(stderr, "Dump terminated\n");
+		exit(1);
+	}
+
+	rtnl_close(&rth);
+	return 0;
+}
+
+int do_qdisc(int argc, char **argv)
+{
+	if (argc < 1)
+		return tc_qdisc_list(0, NULL);
+	if (matches(*argv, "add") == 0)
+		return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_EXCL|NLM_F_CREATE, argc-1, argv+1);
+	if (matches(*argv, "change") == 0)
+		return tc_qdisc_modify(RTM_NEWQDISC, 0, argc-1, argv+1);
+	if (matches(*argv, "replace") == 0)
+		return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_CREATE|NLM_F_REPLACE, argc-1, argv+1);
+	if (matches(*argv, "link") == 0)
+		return tc_qdisc_modify(RTM_NEWQDISC, NLM_F_REPLACE, argc-1, argv+1);
+	if (matches(*argv, "delete") == 0)
+		return tc_qdisc_modify(RTM_DELQDISC, 0,  argc-1, argv+1);
+#if 0
+	if (matches(*argv, "get") == 0)
+		return tc_qdisc_get(RTM_GETQDISC, 0,  argc-1, argv+1);
+#endif
+	if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0
+	    || matches(*argv, "lst") == 0)
+		return tc_qdisc_list(argc-1, argv+1);
+	if (matches(*argv, "help") == 0)
+		usage();
+	fprintf(stderr, "Command \"%s\" is unknown, try \"tc qdisc help\".\n", *argv);
+	return -1;
+}