sbin/ifconfig/iflagg.c

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