iflagg.c revision 362368 
1/*-
2 */
3
4#ifndef lint
5static const char rcsid[] =
6  "$FreeBSD: stable/10/sbin/ifconfig/iflagg.c 362368 2020-06-19 07:07:10Z rpokala $";
7#endif /* not lint */
8
9#include <sys/param.h>
10#include <sys/ioctl.h>
11#include <sys/socket.h>
12#include <sys/sockio.h>
13
14#include <stdlib.h>
15#include <unistd.h>
16
17#include <net/ethernet.h>
18#include <net/if.h>
19#include <net/if_lagg.h>
20#include <net/ieee8023ad_lacp.h>
21#include <net/route.h>
22
23#include <ctype.h>
24#include <stdio.h>
25#include <string.h>
26#include <stdlib.h>
27#include <unistd.h>
28#include <err.h>
29#include <errno.h>
30
31#include "ifconfig.h"
32
33char lacpbuf[120];	/* LACP peer '[(a,a,a),(p,p,p)]' */
34
35static void
36setlaggport(const char *val, int d, int s, const struct afswtch *afp)
37{
38	struct lagg_reqport rp;
39
40	bzero(&rp, sizeof(rp));
41	strlcpy(rp.rp_ifname, name, sizeof(rp.rp_ifname));
42	strlcpy(rp.rp_portname, val, sizeof(rp.rp_portname));
43
44	/* Don't choke if the port is already in this lagg. */
45	if (ioctl(s, SIOCSLAGGPORT, &rp) && errno != EEXIST)
46		err(1, "SIOCSLAGGPORT");
47}
48
49static void
50unsetlaggport(const char *val, int d, int s, const struct afswtch *afp)
51{
52	struct lagg_reqport rp;
53
54	bzero(&rp, sizeof(rp));
55	strlcpy(rp.rp_ifname, name, sizeof(rp.rp_ifname));
56	strlcpy(rp.rp_portname, val, sizeof(rp.rp_portname));
57
58	if (ioctl(s, SIOCSLAGGDELPORT, &rp))
59		err(1, "SIOCSLAGGDELPORT");
60}
61
62static void
63setlaggproto(const char *val, int d, int s, const struct afswtch *afp)
64{
65	struct lagg_protos lpr[] = LAGG_PROTOS;
66	struct lagg_reqall ra;
67	int i;
68
69	bzero(&ra, sizeof(ra));
70	ra.ra_proto = LAGG_PROTO_MAX;
71
72	for (i = 0; i < nitems(lpr); i++) {
73		if (strcmp(val, lpr[i].lpr_name) == 0) {
74			ra.ra_proto = lpr[i].lpr_proto;
75			break;
76		}
77	}
78	if (ra.ra_proto == LAGG_PROTO_MAX)
79		errx(1, "Invalid aggregation protocol: %s", val);
80
81	strlcpy(ra.ra_ifname, name, sizeof(ra.ra_ifname));
82	if (ioctl(s, SIOCSLAGG, &ra) != 0)
83		err(1, "SIOCSLAGG");
84}
85
86static void
87setlaggflowidshift(const char *val, int d, int s, const struct afswtch *afp)
88{
89	struct lagg_reqopts ro;
90
91	bzero(&ro, sizeof(ro));
92	ro.ro_opts = LAGG_OPT_FLOWIDSHIFT;
93	strlcpy(ro.ro_ifname, name, sizeof(ro.ro_ifname));
94	ro.ro_flowid_shift = (int)strtol(val, NULL, 10);
95	if (ro.ro_flowid_shift & ~LAGG_OPT_FLOWIDSHIFT_MASK)
96		errx(1, "Invalid flowid_shift option: %s", val);
97
98	if (ioctl(s, SIOCSLAGGOPTS, &ro) != 0)
99		err(1, "SIOCSLAGGOPTS");
100}
101
102static void
103setlaggsetopt(const char *val, int d, int s, const struct afswtch *afp)
104{
105	struct lagg_reqopts ro;
106
107	bzero(&ro, sizeof(ro));
108	ro.ro_opts = d;
109	switch (ro.ro_opts) {
110	case LAGG_OPT_USE_FLOWID:
111	case -LAGG_OPT_USE_FLOWID:
112	case LAGG_OPT_LACP_STRICT:
113	case -LAGG_OPT_LACP_STRICT:
114	case LAGG_OPT_LACP_TXTEST:
115	case -LAGG_OPT_LACP_TXTEST:
116	case LAGG_OPT_LACP_RXTEST:
117	case -LAGG_OPT_LACP_RXTEST:
118	case LAGG_OPT_LACP_FAST_TIMO:
119	case -LAGG_OPT_LACP_FAST_TIMO:
120		break;
121	default:
122		err(1, "Invalid lagg option");
123	}
124	strlcpy(ro.ro_ifname, name, sizeof(ro.ro_ifname));
125
126	if (ioctl(s, SIOCSLAGGOPTS, &ro) != 0)
127		err(1, "SIOCSLAGGOPTS");
128}
129
130static void
131setlagghash(const char *val, int d, int s, const struct afswtch *afp)
132{
133	struct lagg_reqflags rf;
134	char *str, *tmp, *tok;
135
136
137	rf.rf_flags = 0;
138	str = tmp = strdup(val);
139	while ((tok = strsep(&tmp, ",")) != NULL) {
140		if (strcmp(tok, "l2") == 0)
141			rf.rf_flags |= LAGG_F_HASHL2;
142		else if (strcmp(tok, "l3") == 0)
143			rf.rf_flags |= LAGG_F_HASHL3;
144		else if (strcmp(tok, "l4") == 0)
145			rf.rf_flags |= LAGG_F_HASHL4;
146		else
147			errx(1, "Invalid lagghash option: %s", tok);
148	}
149	free(str);
150	if (rf.rf_flags == 0)
151		errx(1, "No lagghash options supplied");
152
153	strlcpy(rf.rf_ifname, name, sizeof(rf.rf_ifname));
154	if (ioctl(s, SIOCSLAGGHASH, &rf))
155		err(1, "SIOCSLAGGHASH");
156}
157
158static char *
159lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen)
160{
161	snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X",
162	    (int)mac[0], (int)mac[1], (int)mac[2], (int)mac[3],
163	    (int)mac[4], (int)mac[5]);
164
165	return (buf);
166}
167
168static char *
169lacp_format_peer(struct lacp_opreq *req, const char *sep)
170{
171	char macbuf1[20];
172	char macbuf2[20];
173
174	snprintf(lacpbuf, sizeof(lacpbuf),
175	    "[(%04X,%s,%04X,%04X,%04X),%s(%04X,%s,%04X,%04X,%04X)]",
176	    req->actor_prio,
177	    lacp_format_mac(req->actor_mac, macbuf1, sizeof(macbuf1)),
178	    req->actor_key, req->actor_portprio, req->actor_portno, sep,
179	    req->partner_prio,
180	    lacp_format_mac(req->partner_mac, macbuf2, sizeof(macbuf2)),
181	    req->partner_key, req->partner_portprio, req->partner_portno);
182
183	return(lacpbuf);
184}
185
186static void
187lagg_status(int s)
188{
189	struct lagg_protos lpr[] = LAGG_PROTOS;
190	struct lagg_reqport rpbuf[LAGG_MAX_PORTS];
191	struct lagg_reqall ra;
192	struct lagg_reqopts ro;
193	struct lagg_reqflags rf;
194	struct lacp_opreq *lp;
195	const char *proto = "<unknown>";
196	int i;
197
198	bzero(&ra, sizeof(ra));
199	bzero(&ro, sizeof(ro));
200
201	strlcpy(ra.ra_ifname, name, sizeof(ra.ra_ifname));
202	ra.ra_size = sizeof(rpbuf);
203	ra.ra_port = rpbuf;
204
205	strlcpy(ro.ro_ifname, name, sizeof(ro.ro_ifname));
206	ioctl(s, SIOCGLAGGOPTS, &ro);
207
208	strlcpy(rf.rf_ifname, name, sizeof(rf.rf_ifname));
209	if (ioctl(s, SIOCGLAGGFLAGS, &rf) != 0)
210		rf.rf_flags = 0;
211
212	if (ioctl(s, SIOCGLAGG, &ra) == 0) {
213		lp = (struct lacp_opreq *)&ra.ra_lacpreq;
214
215		for (i = 0; i < nitems(lpr); i++) {
216			if (ra.ra_proto == lpr[i].lpr_proto) {
217				proto = lpr[i].lpr_name;
218				break;
219			}
220		}
221
222		printf("\tlaggproto %s", proto);
223		if (rf.rf_flags & LAGG_F_HASHMASK) {
224			const char *sep = "";
225
226			printf(" lagghash ");
227			if (rf.rf_flags & LAGG_F_HASHL2) {
228				printf("%sl2", sep);
229				sep = ",";
230			}
231			if (rf.rf_flags & LAGG_F_HASHL3) {
232				printf("%sl3", sep);
233				sep = ",";
234			}
235			if (rf.rf_flags & LAGG_F_HASHL4) {
236				printf("%sl4", sep);
237				sep = ",";
238			}
239		}
240		putchar('\n');
241		if (verbose) {
242			printf("\tlagg options:\n");
243			printb("\t\tflags", ro.ro_opts, LAGG_OPT_BITS);
244			putchar('\n');
245			printf("\t\tflowid_shift: %d\n", ro.ro_flowid_shift);
246			printf("\tlagg statistics:\n");
247			printf("\t\tactive ports: %d\n", ro.ro_active);
248			printf("\t\tflapping: %u\n", ro.ro_flapping);
249			if (ra.ra_proto == LAGG_PROTO_LACP) {
250				printf("\tlag id: %s\n",
251				    lacp_format_peer(lp, "\n\t\t "));
252			}
253		}
254
255		for (i = 0; i < ra.ra_ports; i++) {
256			lp = (struct lacp_opreq *)&rpbuf[i].rp_lacpreq;
257			printf("\tlaggport: %s ", rpbuf[i].rp_portname);
258			printb("flags", rpbuf[i].rp_flags, LAGG_PORT_BITS);
259			if (verbose && ra.ra_proto == LAGG_PROTO_LACP)
260				printb(" state", lp->actor_state,
261				    LACP_STATE_BITS);
262			putchar('\n');
263			if (verbose && ra.ra_proto == LAGG_PROTO_LACP)
264				printf("\t\t%s\n",
265				    lacp_format_peer(lp, "\n\t\t "));
266		}
267
268		if (0 /* XXX */) {
269			printf("\tsupported aggregation protocols:\n");
270			for (i = 0; i < (sizeof(lpr) / sizeof(lpr[0])); i++)
271				printf("\t\tlaggproto %s\n", lpr[i].lpr_name);
272		}
273	}
274}
275
276static struct cmd lagg_cmds[] = {
277	DEF_CMD_ARG("laggport",		setlaggport),
278	DEF_CMD_ARG("-laggport",	unsetlaggport),
279	DEF_CMD_ARG("laggproto",	setlaggproto),
280	DEF_CMD_ARG("lagghash",		setlagghash),
281	DEF_CMD("use_flowid",	LAGG_OPT_USE_FLOWID,	setlaggsetopt),
282	DEF_CMD("-use_flowid",	-LAGG_OPT_USE_FLOWID,	setlaggsetopt),
283	DEF_CMD("lacp_strict",	LAGG_OPT_LACP_STRICT,	setlaggsetopt),
284	DEF_CMD("-lacp_strict",	-LAGG_OPT_LACP_STRICT,	setlaggsetopt),
285	DEF_CMD("lacp_txtest",	LAGG_OPT_LACP_TXTEST,	setlaggsetopt),
286	DEF_CMD("-lacp_txtest",	-LAGG_OPT_LACP_TXTEST,	setlaggsetopt),
287	DEF_CMD("lacp_rxtest",	LAGG_OPT_LACP_RXTEST,	setlaggsetopt),
288	DEF_CMD("-lacp_rxtest",	-LAGG_OPT_LACP_RXTEST,	setlaggsetopt),
289	DEF_CMD("lacp_fast_timeout",	LAGG_OPT_LACP_FAST_TIMO,	setlaggsetopt),
290	DEF_CMD("-lacp_fast_timeout",	-LAGG_OPT_LACP_FAST_TIMO,	setlaggsetopt),
291	DEF_CMD_ARG("flowid_shift",	setlaggflowidshift),
292};
293static struct afswtch af_lagg = {
294	.af_name	= "af_lagg",
295	.af_af		= AF_UNSPEC,
296	.af_other_status = lagg_status,
297};
298
299static __constructor void
300lagg_ctor(void)
301{
302	int i;
303
304	for (i = 0; i < nitems(lagg_cmds);  i++)
305		cmd_register(&lagg_cmds[i]);
306	af_register(&af_lagg);
307}
308