iflagg.c revision 287723 
1/*-
2 */
3
4#ifndef lint
5static const char rcsid[] =
6  "$FreeBSD: stable/10/sbin/ifconfig/iflagg.c 287723 2015-09-12 20:36:39Z hrs $";
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		break;
119	default:
120		err(1, "Invalid lagg option");
121	}
122	strlcpy(ro.ro_ifname, name, sizeof(ro.ro_ifname));
123
124	if (ioctl(s, SIOCSLAGGOPTS, &ro) != 0)
125		err(1, "SIOCSLAGGOPTS");
126}
127
128static void
129setlagghash(const char *val, int d, int s, const struct afswtch *afp)
130{
131	struct lagg_reqflags rf;
132	char *str, *tmp, *tok;
133
134
135	rf.rf_flags = 0;
136	str = tmp = strdup(val);
137	while ((tok = strsep(&tmp, ",")) != NULL) {
138		if (strcmp(tok, "l2") == 0)
139			rf.rf_flags |= LAGG_F_HASHL2;
140		else if (strcmp(tok, "l3") == 0)
141			rf.rf_flags |= LAGG_F_HASHL3;
142		else if (strcmp(tok, "l4") == 0)
143			rf.rf_flags |= LAGG_F_HASHL4;
144		else
145			errx(1, "Invalid lagghash option: %s", tok);
146	}
147	free(str);
148	if (rf.rf_flags == 0)
149		errx(1, "No lagghash options supplied");
150
151	strlcpy(rf.rf_ifname, name, sizeof(rf.rf_ifname));
152	if (ioctl(s, SIOCSLAGGHASH, &rf))
153		err(1, "SIOCSLAGGHASH");
154}
155
156static char *
157lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen)
158{
159	snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X",
160	    (int)mac[0], (int)mac[1], (int)mac[2], (int)mac[3],
161	    (int)mac[4], (int)mac[5]);
162
163	return (buf);
164}
165
166static char *
167lacp_format_peer(struct lacp_opreq *req, const char *sep)
168{
169	char macbuf1[20];
170	char macbuf2[20];
171
172	snprintf(lacpbuf, sizeof(lacpbuf),
173	    "[(%04X,%s,%04X,%04X,%04X),%s(%04X,%s,%04X,%04X,%04X)]",
174	    req->actor_prio,
175	    lacp_format_mac(req->actor_mac, macbuf1, sizeof(macbuf1)),
176	    req->actor_key, req->actor_portprio, req->actor_portno, sep,
177	    req->partner_prio,
178	    lacp_format_mac(req->partner_mac, macbuf2, sizeof(macbuf2)),
179	    req->partner_key, req->partner_portprio, req->partner_portno);
180
181	return(lacpbuf);
182}
183
184static void
185lagg_status(int s)
186{
187	struct lagg_protos lpr[] = LAGG_PROTOS;
188	struct lagg_reqport rp, rpbuf[LAGG_MAX_PORTS];
189	struct lagg_reqall ra;
190	struct lagg_reqopts ro;
191	struct lagg_reqflags rf;
192	struct lacp_opreq *lp;
193	const char *proto = "<unknown>";
194	int i, isport = 0;
195
196	bzero(&rp, sizeof(rp));
197	bzero(&ra, sizeof(ra));
198	bzero(&ro, sizeof(ro));
199
200	strlcpy(rp.rp_ifname, name, sizeof(rp.rp_ifname));
201	strlcpy(rp.rp_portname, name, sizeof(rp.rp_portname));
202
203	if (ioctl(s, SIOCGLAGGPORT, &rp) == 0)
204		isport = 1;
205
206	strlcpy(ra.ra_ifname, name, sizeof(ra.ra_ifname));
207	ra.ra_size = sizeof(rpbuf);
208	ra.ra_port = rpbuf;
209
210	strlcpy(ro.ro_ifname, name, sizeof(ro.ro_ifname));
211	ioctl(s, SIOCGLAGGOPTS, &ro);
212
213	strlcpy(rf.rf_ifname, name, sizeof(rf.rf_ifname));
214	if (ioctl(s, SIOCGLAGGFLAGS, &rf) != 0)
215		rf.rf_flags = 0;
216
217	if (ioctl(s, SIOCGLAGG, &ra) == 0) {
218		lp = (struct lacp_opreq *)&ra.ra_lacpreq;
219
220		for (i = 0; i < nitems(lpr); i++) {
221			if (ra.ra_proto == lpr[i].lpr_proto) {
222				proto = lpr[i].lpr_name;
223				break;
224			}
225		}
226
227		printf("\tlaggproto %s", proto);
228		if (rf.rf_flags & LAGG_F_HASHMASK) {
229			const char *sep = "";
230
231			printf(" lagghash ");
232			if (rf.rf_flags & LAGG_F_HASHL2) {
233				printf("%sl2", sep);
234				sep = ",";
235			}
236			if (rf.rf_flags & LAGG_F_HASHL3) {
237				printf("%sl3", sep);
238				sep = ",";
239			}
240			if (rf.rf_flags & LAGG_F_HASHL4) {
241				printf("%sl4", sep);
242				sep = ",";
243			}
244		}
245		if (isport)
246			printf(" laggdev %s", rp.rp_ifname);
247		putchar('\n');
248		if (verbose) {
249			printf("\tlagg options:\n");
250			printb("\t\tflags", ro.ro_opts, LAGG_OPT_BITS);
251			putchar('\n');
252			printf("\t\tflowid_shift: %d\n", ro.ro_flowid_shift);
253			printf("\tlagg statistics:\n");
254			printf("\t\tactive ports: %d\n", ro.ro_active);
255			printf("\t\tflapping: %u\n", ro.ro_flapping);
256			if (ra.ra_proto == LAGG_PROTO_LACP) {
257				printf("\tlag id: %s\n",
258				    lacp_format_peer(lp, "\n\t\t "));
259			}
260		}
261
262		for (i = 0; i < ra.ra_ports; i++) {
263			lp = (struct lacp_opreq *)&rpbuf[i].rp_lacpreq;
264			printf("\tlaggport: %s ", rpbuf[i].rp_portname);
265			printb("flags", rpbuf[i].rp_flags, LAGG_PORT_BITS);
266			if (verbose && ra.ra_proto == LAGG_PROTO_LACP)
267				printb(" state", lp->actor_state,
268				    LACP_STATE_BITS);
269			putchar('\n');
270			if (verbose && ra.ra_proto == LAGG_PROTO_LACP)
271				printf("\t\t%s\n",
272				    lacp_format_peer(lp, "\n\t\t "));
273		}
274
275		if (0 /* XXX */) {
276			printf("\tsupported aggregation protocols:\n");
277			for (i = 0; i < (sizeof(lpr) / sizeof(lpr[0])); i++)
278				printf("\t\tlaggproto %s\n", lpr[i].lpr_name);
279		}
280	}
281}
282
283static struct cmd lagg_cmds[] = {
284	DEF_CMD_ARG("laggport",		setlaggport),
285	DEF_CMD_ARG("-laggport",	unsetlaggport),
286	DEF_CMD_ARG("laggproto",	setlaggproto),
287	DEF_CMD_ARG("lagghash",		setlagghash),
288	DEF_CMD("use_flowid",	LAGG_OPT_USE_FLOWID,	setlaggsetopt),
289	DEF_CMD("-use_flowid",	-LAGG_OPT_USE_FLOWID,	setlaggsetopt),
290	DEF_CMD("lacp_strict",	LAGG_OPT_LACP_STRICT,	setlaggsetopt),
291	DEF_CMD("-lacp_strict",	-LAGG_OPT_LACP_STRICT,	setlaggsetopt),
292	DEF_CMD("lacp_txtest",	LAGG_OPT_LACP_TXTEST,	setlaggsetopt),
293	DEF_CMD("-lacp_txtest",	-LAGG_OPT_LACP_TXTEST,	setlaggsetopt),
294	DEF_CMD("lacp_rxtest",	LAGG_OPT_LACP_RXTEST,	setlaggsetopt),
295	DEF_CMD("-lacp_rxtest",	-LAGG_OPT_LACP_RXTEST,	setlaggsetopt),
296	DEF_CMD_ARG("flowid_shift",	setlaggflowidshift),
297};
298static struct afswtch af_lagg = {
299	.af_name	= "af_lagg",
300	.af_af		= AF_UNSPEC,
301	.af_other_status = lagg_status,
302};
303
304static __constructor void
305lagg_ctor(void)
306{
307#define	N(a)	(sizeof(a) / sizeof(a[0]))
308	int i;
309
310	for (i = 0; i < N(lagg_cmds);  i++)
311		cmd_register(&lagg_cmds[i]);
312	af_register(&af_lagg);
313#undef N
314}
315