ifconfig(8): Make lagg creation more fault-tolerant
[dragonfly.git] / sbin / ifconfig / iflagg.c
CommitLineData
50b1e235 1/*-
bde0ea86 2 * $FreeBSD: head/sbin/ifconfig/iflagg.c 249897 2013-04-25 16:34:04Z glebius $
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3 */
4
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5#include <sys/param.h>
6#include <sys/ioctl.h>
7#include <sys/socket.h>
8#include <sys/sockio.h>
9
50b1e235 10#include <net/if.h>
50b1e235 11#include <net/route.h>
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12#include <net/ethernet.h>
13#include <net/lagg/if_lagg.h>
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14
15#include <ctype.h>
16#include <stdio.h>
17#include <string.h>
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18#include <stdlib.h>
19#include <stdbool.h>
20#include <unistd.h>
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21#include <err.h>
22#include <errno.h>
23
24#include "ifconfig.h"
25
26char lacpbuf[120]; /* LACP peer '[(a,a,a),(p,p,p)]' */
27
28static void
29setlaggport(const char *val, int d, int s, const struct afswtch *afp)
30{
31 struct lagg_reqport rp;
32
33 bzero(&rp, sizeof(rp));
34 strlcpy(rp.rp_ifname, name, sizeof(rp.rp_ifname));
35 strlcpy(rp.rp_portname, val, sizeof(rp.rp_portname));
36
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37 /*
38 * Do not exit with an error here. Doing so permits a failed NIC
39 * to take down an entire lagg.
40 *
41 * Don't error at all if the port is already in the lagg.
42 */
43 if (ioctl(s, SIOCSLAGGPORT, &rp) && errno != EEXIST) {
44 warnx("%s %s: SIOCSLAGGPORT: %s",
45 name, val, strerror(errno));
46 exit_code = 1;
47 }
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48}
49
50static void
51unsetlaggport(const char *val, int d, int s, const struct afswtch *afp)
52{
53 struct lagg_reqport rp;
54
55 bzero(&rp, sizeof(rp));
56 strlcpy(rp.rp_ifname, name, sizeof(rp.rp_ifname));
57 strlcpy(rp.rp_portname, val, sizeof(rp.rp_portname));
58
59 if (ioctl(s, SIOCSLAGGDELPORT, &rp))
60 err(1, "SIOCSLAGGDELPORT");
61}
62
63static void
64setlaggproto(const char *val, int d, int s, const struct afswtch *afp)
65{
66 struct lagg_protos lpr[] = LAGG_PROTOS;
67 struct lagg_reqall ra;
46158ff5 68 size_t i;
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69
70 bzero(&ra, sizeof(ra));
71 ra.ra_proto = LAGG_PROTO_MAX;
72
b6b91ec7 73 for (i = 0; i < nitems(lpr); i++) {
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74 if (strcmp(val, lpr[i].lpr_name) == 0) {
75 ra.ra_proto = lpr[i].lpr_proto;
76 break;
77 }
78 }
79 if (ra.ra_proto == LAGG_PROTO_MAX)
80 errx(1, "Invalid aggregation protocol: %s", val);
81
82 strlcpy(ra.ra_ifname, name, sizeof(ra.ra_ifname));
83 if (ioctl(s, SIOCSLAGG, &ra) != 0)
84 err(1, "SIOCSLAGG");
85}
86
87static void
88setlagghash(const char *val, int d, int s, const struct afswtch *afp)
89{
90 struct lagg_reqflags rf;
91 char *str, *tmp, *tok;
92
93
94 rf.rf_flags = 0;
95 str = tmp = strdup(val);
96 while ((tok = strsep(&tmp, ",")) != NULL) {
97 if (strcmp(tok, "l2") == 0)
98 rf.rf_flags |= LAGG_F_HASHL2;
99 else if (strcmp(tok, "l3") == 0)
100 rf.rf_flags |= LAGG_F_HASHL3;
101 else if (strcmp(tok, "l4") == 0)
102 rf.rf_flags |= LAGG_F_HASHL4;
103 else
104 errx(1, "Invalid lagghash option: %s", tok);
105 }
106 free(str);
107 if (rf.rf_flags == 0)
108 errx(1, "No lagghash options supplied");
109
110 strlcpy(rf.rf_ifname, name, sizeof(rf.rf_ifname));
111 if (ioctl(s, SIOCSLAGGHASH, &rf))
112 err(1, "SIOCSLAGGHASH");
113}
114
115static char *
116lacp_format_mac(const uint8_t *mac, char *buf, size_t buflen)
117{
118 snprintf(buf, buflen, "%02X-%02X-%02X-%02X-%02X-%02X",
119 (int)mac[0], (int)mac[1], (int)mac[2], (int)mac[3],
120 (int)mac[4], (int)mac[5]);
121
122 return (buf);
123}
124
125static char *
126lacp_format_peer(struct lacp_opreq *req, const char *sep)
127{
128 char macbuf1[20];
129 char macbuf2[20];
130
131 snprintf(lacpbuf, sizeof(lacpbuf),
132 "[(%04X,%s,%04X,%04X,%04X),%s(%04X,%s,%04X,%04X,%04X)]",
133 req->actor_prio,
134 lacp_format_mac(req->actor_mac, macbuf1, sizeof(macbuf1)),
135 req->actor_key, req->actor_portprio, req->actor_portno, sep,
136 req->partner_prio,
137 lacp_format_mac(req->partner_mac, macbuf2, sizeof(macbuf2)),
138 req->partner_key, req->partner_portprio, req->partner_portno);
139
140 return(lacpbuf);
141}
142
143static void
144lagg_status(int s)
145{
146 struct lagg_protos lpr[] = LAGG_PROTOS;
147 struct lagg_reqport rp, rpbuf[LAGG_MAX_PORTS];
148 struct lagg_reqall ra;
149 struct lagg_reqflags rf;
150 struct lacp_opreq *lp;
151 const char *proto = "<unknown>";
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152 bool isport = false;
153 size_t i;
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154
155 bzero(&rp, sizeof(rp));
156 bzero(&ra, sizeof(ra));
157
158 strlcpy(rp.rp_ifname, name, sizeof(rp.rp_ifname));
159 strlcpy(rp.rp_portname, name, sizeof(rp.rp_portname));
160
161 if (ioctl(s, SIOCGLAGGPORT, &rp) == 0)
46158ff5 162 isport = true;
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163
164 strlcpy(ra.ra_ifname, name, sizeof(ra.ra_ifname));
165 ra.ra_size = sizeof(rpbuf);
166 ra.ra_port = rpbuf;
167
168 strlcpy(rf.rf_ifname, name, sizeof(rf.rf_ifname));
169 if (ioctl(s, SIOCGLAGGFLAGS, &rf) != 0)
170 rf.rf_flags = 0;
171
172 if (ioctl(s, SIOCGLAGG, &ra) == 0) {
173 lp = (struct lacp_opreq *)&ra.ra_lacpreq;
174
b6b91ec7 175 for (i = 0; i < nitems(lpr); i++) {
46158ff5 176 if ((int)ra.ra_proto == lpr[i].lpr_proto) {
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177 proto = lpr[i].lpr_name;
178 break;
179 }
180 }
181
182 printf("\tlaggproto %s", proto);
183 if (rf.rf_flags & LAGG_F_HASHMASK) {
184 const char *sep = "";
185
186 printf(" lagghash ");
187 if (rf.rf_flags & LAGG_F_HASHL2) {
188 printf("%sl2", sep);
189 sep = ",";
190 }
191 if (rf.rf_flags & LAGG_F_HASHL3) {
192 printf("%sl3", sep);
193 sep = ",";
194 }
195 if (rf.rf_flags & LAGG_F_HASHL4) {
196 printf("%sl4", sep);
197 sep = ",";
198 }
199 }
200 if (isport)
201 printf(" laggdev %s", rp.rp_ifname);
202 putchar('\n');
203 if (verbose && ra.ra_proto == LAGG_PROTO_LACP)
204 printf("\tlag id: %s\n",
205 lacp_format_peer(lp, "\n\t\t "));
206
46158ff5 207 for (i = 0; i < (size_t)ra.ra_ports; i++) {
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208 lp = (struct lacp_opreq *)&rpbuf[i].rp_lacpreq;
209 printf("\tlaggport: %s ", rpbuf[i].rp_portname);
210 printb("flags", rpbuf[i].rp_flags, LAGG_PORT_BITS);
211 if (verbose && ra.ra_proto == LAGG_PROTO_LACP)
212 printf(" state=%X", lp->actor_state);
213 putchar('\n');
214 if (verbose && ra.ra_proto == LAGG_PROTO_LACP)
215 printf("\t\t%s\n",
216 lacp_format_peer(lp, "\n\t\t "));
217 }
218
219 if (0 /* XXX */) {
220 printf("\tsupported aggregation protocols:\n");
b6b91ec7 221 for (i = 0; i < nitems(lpr); i++)
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222 printf("\t\tlaggproto %s\n", lpr[i].lpr_name);
223 }
224 }
225}
226
227static struct cmd lagg_cmds[] = {
228 DEF_CMD_ARG("laggport", setlaggport),
229 DEF_CMD_ARG("-laggport", unsetlaggport),
230 DEF_CMD_ARG("laggproto", setlaggproto),
231 DEF_CMD_ARG("lagghash", setlagghash),
232};
233static struct afswtch af_lagg = {
234 .af_name = "af_lagg",
235 .af_af = AF_UNSPEC,
236 .af_other_status = lagg_status,
237};
238
239static __constructor(101) void
240lagg_ctor(void)
241{
46158ff5 242 size_t i;
50b1e235 243
b6b91ec7 244 for (i = 0; i < nitems(lagg_cmds); i++)
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245 cmd_register(&lagg_cmds[i]);
246 af_register(&af_lagg);
50b1e235 247}