sbin/ifconfig/iflagg.c

   1 /*-
   2  * $FreeBSD: head/sbin/ifconfig/iflagg.c 249897 2013-04-25 16:34:04Z glebius $
   3  */
   4
   5 #include <sys/param.h>
   6 #include <sys/ioctl.h>
   7 #include <sys/socket.h>
   8 #include <sys/sockio.h>
   9
  10 #include <net/if.h>
  11 #include <net/route.h>
  12 #include <net/ethernet.h>
  13 #include <net/lagg/if_lagg.h>
  14
  15 #include <ctype.h>
  16 #include <stdio.h>
  17 #include <string.h>
  18 #include <stdlib.h>
  19 #include <stdbool.h>
  20 #include <unistd.h>
  21 #include <err.h>
  22 #include <errno.h>
  23
  24 #include "ifconfig.h"
  25
  26 char lacpbuf[120];      /* LACP peer '[(a,a,a),(p,p,p)]' */
  27
  28 static void
  29 setlaggport(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
  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         }
  48 }
  49
  50 static void
  51 unsetlaggport(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
  63 static void
  64 setlaggproto(const char *val, int d, int s, const struct afswtch *afp)
  65 {
  66         struct lagg_protos lpr[] = LAGG_PROTOS;
  67         struct lagg_reqall ra;
  68         size_t i;
  69
  70         bzero(&ra, sizeof(ra));
  71         ra.ra_proto = LAGG_PROTO_MAX;
  72
  73         for (i = 0; i < nitems(lpr); i++) {
  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
  87 static void
  88 setlagghash(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
 115 static char *
 116 lacp_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
 125 static char *
 126 lacp_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
 143 static void
 144 lagg_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>";
 152         bool isport = false;
 153         size_t i;
 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)
 162                 isport = true;
 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
 175                 for (i = 0; i < nitems(lpr); i++) {
 176                         if ((int)ra.ra_proto == lpr[i].lpr_proto) {
 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
 207                 for (i = 0; i < (size_t)ra.ra_ports; i++) {
 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");
 221                         for (i = 0; i < nitems(lpr); i++)
 222                                 printf("\t\tlaggproto %s\n", lpr[i].lpr_name);
 223                 }
 224         }
 225 }
 226
 227 static 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 };
 233 static struct afswtch af_lagg = {
 234         .af_name        = "af_lagg",
 235         .af_af          = AF_UNSPEC,
 236         .af_other_status = lagg_status,
 237 };
 238
 239 static __constructor(101) void
 240 lagg_ctor(void)
 241 {
 242         size_t i;
 243
 244         for (i = 0; i < nitems(lagg_cmds);  i++)
 245                 cmd_register(&lagg_cmds[i]);
 246         af_register(&af_lagg);
 247 }