]> git.proxmox.com Git - mirror_iproute2.git/blobdiff - ip/iprule.c
libnetlink: add size argument to rtnl_talk
[mirror_iproute2.git] / ip / iprule.c
index 7211a96e8dc8a99d0d5576a10b5d08bfdc4ade6c..714278a2be58af0b2c6a80373110e69f9824f486 100644 (file)
@@ -8,10 +8,6 @@
  *
  * Authors:    Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
  *
- *
- * Changes:
- *
- * Rani Assaf <rani@magic.metawire.com> 980929:        resolve addresses
  */
 
 #include <stdio.h>
@@ -38,11 +34,14 @@ static void usage(void)
 {
        fprintf(stderr, "Usage: ip rule [ list | add | del | flush ] SELECTOR ACTION\n");
        fprintf(stderr, "SELECTOR := [ not ] [ from PREFIX ] [ to PREFIX ] [ tos TOS ] [ fwmark FWMARK[/MASK] ]\n");
-       fprintf(stderr, "            [ dev STRING ] [ pref NUMBER ]\n");
+       fprintf(stderr, "            [ iif STRING ] [ oif STRING ] [ pref NUMBER ]\n");
        fprintf(stderr, "ACTION := [ table TABLE_ID ]\n");
        fprintf(stderr, "          [ prohibit | reject | unreachable ]\n");
        fprintf(stderr, "          [ realms [SRCREALM/]DSTREALM ]\n");
        fprintf(stderr, "          [ goto NUMBER ]\n");
+       fprintf(stderr, "          SUPPRESSOR\n");
+       fprintf(stderr, "SUPPRESSOR := [ suppress_prefixlength NUMBER ]\n");
+       fprintf(stderr, "              [ suppress_ifgroup DEVGROUP ]\n");
        fprintf(stderr, "TABLE_ID := [ local | main | default | NUMBER ]\n");
        exit(-1);
 }
@@ -54,7 +53,7 @@ int print_rule(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
        int len = n->nlmsg_len;
        int host_len = -1;
        __u32 table;
-       struct rtattr * tb[RTA_MAX+1];
+       struct rtattr * tb[FRA_MAX+1];
        char abuf[256];
        SPRINT_BUF(b1);
 
@@ -65,40 +64,33 @@ int print_rule(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
        if (len < 0)
                return -1;
 
-       parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
+       parse_rtattr(tb, FRA_MAX, RTM_RTA(r), len);
 
-       if (r->rtm_family == AF_INET)
-               host_len = 32;
-       else if (r->rtm_family == AF_INET6)
-               host_len = 128;
-       else if (r->rtm_family == AF_DECnet)
-               host_len = 16;
-       else if (r->rtm_family == AF_IPX)
-               host_len = 80;
+       host_len = af_bit_len(r->rtm_family);
 
        if (n->nlmsg_type == RTM_DELRULE)
                fprintf(fp, "Deleted ");
 
-       if (tb[RTA_PRIORITY])
-               fprintf(fp, "%u:\t", *(unsigned*)RTA_DATA(tb[RTA_PRIORITY]));
+       if (tb[FRA_PRIORITY])
+               fprintf(fp, "%u:\t", *(unsigned*)RTA_DATA(tb[FRA_PRIORITY]));
        else
                fprintf(fp, "0:\t");
 
        if (r->rtm_flags & FIB_RULE_INVERT)
                fprintf(fp, "not ");
 
-       if (tb[RTA_SRC]) {
+       if (tb[FRA_SRC]) {
                if (r->rtm_src_len != host_len) {
                        fprintf(fp, "from %s/%u ", rt_addr_n2a(r->rtm_family,
-                                                        RTA_PAYLOAD(tb[RTA_SRC]),
-                                                        RTA_DATA(tb[RTA_SRC]),
-                                                        abuf, sizeof(abuf)),
+                                                      RTA_PAYLOAD(tb[FRA_SRC]),
+                                                      RTA_DATA(tb[FRA_SRC]),
+                                                      abuf, sizeof(abuf)),
                                r->rtm_src_len
                                );
                } else {
                        fprintf(fp, "from %s ", format_host(r->rtm_family,
-                                                      RTA_PAYLOAD(tb[RTA_SRC]),
-                                                      RTA_DATA(tb[RTA_SRC]),
+                                                      RTA_PAYLOAD(tb[FRA_SRC]),
+                                                      RTA_DATA(tb[FRA_SRC]),
                                                       abuf, sizeof(abuf))
                                );
                }
@@ -108,18 +100,18 @@ int print_rule(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
                fprintf(fp, "from all ");
        }
 
-       if (tb[RTA_DST]) {
+       if (tb[FRA_DST]) {
                if (r->rtm_dst_len != host_len) {
                        fprintf(fp, "to %s/%u ", rt_addr_n2a(r->rtm_family,
-                                                        RTA_PAYLOAD(tb[RTA_DST]),
-                                                        RTA_DATA(tb[RTA_DST]),
-                                                        abuf, sizeof(abuf)),
+                                                      RTA_PAYLOAD(tb[FRA_DST]),
+                                                      RTA_DATA(tb[FRA_DST]),
+                                                      abuf, sizeof(abuf)),
                                r->rtm_dst_len
                                );
                } else {
                        fprintf(fp, "to %s ", format_host(r->rtm_family,
-                                                      RTA_PAYLOAD(tb[RTA_DST]),
-                                                      RTA_DATA(tb[RTA_DST]),
+                                                      RTA_PAYLOAD(tb[FRA_DST]),
+                                                      RTA_DATA(tb[FRA_DST]),
                                                       abuf, sizeof(abuf)));
                }
        } else if (r->rtm_dst_len) {
@@ -130,31 +122,53 @@ int print_rule(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
                SPRINT_BUF(b1);
                fprintf(fp, "tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
        }
-       if (tb[RTA_PROTOINFO] || tb[RTA_FWMASK]) {
+
+       if (tb[FRA_FWMARK] || tb[FRA_FWMASK]) {
                __u32 mark = 0, mask = 0;
 
-               if (tb[RTA_PROTOINFO])
-                       mark = *(__u32*)RTA_DATA(tb[RTA_PROTOINFO]);
+               if (tb[FRA_FWMARK])
+                       mark = rta_getattr_u32(tb[FRA_FWMARK]);
 
-               if (tb[RTA_FWMASK] &&
-                   (mask = *(__u32*)RTA_DATA(tb[RTA_FWMASK])) != 0xFFFFFFFF)
+               if (tb[FRA_FWMASK] &&
+                   (mask = rta_getattr_u32(tb[FRA_FWMASK])) != 0xFFFFFFFF)
                        fprintf(fp, "fwmark 0x%x/0x%x ", mark, mask);
                else
                        fprintf(fp, "fwmark 0x%x ", mark);
        }
 
-       if (tb[RTA_IIF]) {
-               fprintf(fp, "iif %s ", (char*)RTA_DATA(tb[RTA_IIF]));
-               if (r->rtm_flags & FIB_RULE_DEV_DETACHED)
+       if (tb[FRA_IFNAME]) {
+               fprintf(fp, "iif %s ", rta_getattr_str(tb[FRA_IFNAME]));
+               if (r->rtm_flags & FIB_RULE_IIF_DETACHED)
+                       fprintf(fp, "[detached] ");
+       }
+
+       if (tb[FRA_OIFNAME]) {
+               fprintf(fp, "oif %s ", rta_getattr_str(tb[FRA_OIFNAME]));
+               if (r->rtm_flags & FIB_RULE_OIF_DETACHED)
                        fprintf(fp, "[detached] ");
        }
 
        table = rtm_get_table(r, tb);
-       if (table)
+       if (table) {
                fprintf(fp, "lookup %s ", rtnl_rttable_n2a(table, b1, sizeof(b1)));
 
-       if (tb[RTA_FLOW]) {
-               __u32 to = *(__u32*)RTA_DATA(tb[RTA_FLOW]);
+               if (tb[FRA_SUPPRESS_PREFIXLEN]) {
+                       int pl = rta_getattr_u32(tb[FRA_SUPPRESS_PREFIXLEN]);
+                       if (pl != -1) {
+                               fprintf(fp, "suppress_prefixlength %d ", pl);
+                       }
+               }
+               if (tb[FRA_SUPPRESS_IFGROUP]) {
+                       int group = rta_getattr_u32(tb[FRA_SUPPRESS_IFGROUP]);
+                       if (group != -1) {
+                               SPRINT_BUF(b1);
+                               fprintf(fp, "suppress_ifgroup %s ", rtnl_group_n2a(group, b1, sizeof(b1)));
+                       }
+               }
+       }
+
+       if (tb[FRA_FLOW]) {
+               __u32 to = rta_getattr_u32(tb[FRA_FLOW]);
                __u32 from = to>>16;
                to &= 0xFFFF;
                if (from) {
@@ -177,7 +191,7 @@ int print_rule(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
        } else if (r->rtm_type == FR_ACT_GOTO) {
                fprintf(fp, "goto ");
                if (tb[FRA_GOTO])
-                       fprintf(fp, "%u", *(__u32 *) RTA_DATA(tb[FRA_GOTO]));
+                       fprintf(fp, "%u", rta_getattr_u32(tb[FRA_GOTO]));
                else
                        fprintf(fp, "none");
                if (r->rtm_flags & FIB_RULE_UNRESOLVED)
@@ -209,7 +223,7 @@ static int iprule_list(int argc, char **argv)
                return 1;
        }
 
-       if (rtnl_dump_filter(&rth, print_rule, stdout, NULL, NULL) < 0) {
+       if (rtnl_dump_filter(&rth, print_rule, stdout) < 0) {
                fprintf(stderr, "Dump terminated\n");
                return 1;
        }
@@ -222,9 +236,9 @@ static int iprule_modify(int cmd, int argc, char **argv)
 {
        int table_ok = 0;
        struct {
-               struct nlmsghdr         n;
-               struct rtmsg            r;
-               char                    buf[1024];
+               struct nlmsghdr n;
+               struct rtmsg            r;
+               char                    buf[1024];
        } req;
 
        memset(&req, 0, sizeof(req));
@@ -252,13 +266,13 @@ static int iprule_modify(int cmd, int argc, char **argv)
                        NEXT_ARG();
                        get_prefix(&dst, *argv, req.r.rtm_family);
                        req.r.rtm_src_len = dst.bitlen;
-                       addattr_l(&req.n, sizeof(req), RTA_SRC, &dst.data, dst.bytelen);
+                       addattr_l(&req.n, sizeof(req), FRA_SRC, &dst.data, dst.bytelen);
                } else if (strcmp(*argv, "to") == 0) {
                        inet_prefix dst;
                        NEXT_ARG();
                        get_prefix(&dst, *argv, req.r.rtm_family);
                        req.r.rtm_dst_len = dst.bitlen;
-                       addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
+                       addattr_l(&req.n, sizeof(req), FRA_DST, &dst.data, dst.bytelen);
                } else if (matches(*argv, "preference") == 0 ||
                           matches(*argv, "order") == 0 ||
                           matches(*argv, "priority") == 0) {
@@ -266,8 +280,9 @@ static int iprule_modify(int cmd, int argc, char **argv)
                        NEXT_ARG();
                        if (get_u32(&pref, *argv, 0))
                                invarg("preference value is invalid\n", *argv);
-                       addattr32(&req.n, sizeof(req), RTA_PRIORITY, pref);
-               } else if (strcmp(*argv, "tos") == 0) {
+                       addattr32(&req.n, sizeof(req), FRA_PRIORITY, pref);
+               } else if (strcmp(*argv, "tos") == 0 ||
+                          matches(*argv, "dsfield") == 0) {
                        __u32 tos;
                        NEXT_ARG();
                        if (rtnl_dsfield_a2n(&tos, *argv))
@@ -281,18 +296,18 @@ static int iprule_modify(int cmd, int argc, char **argv)
                                *slash = '\0';
                        if (get_u32(&fwmark, *argv, 0))
                                invarg("fwmark value is invalid\n", *argv);
-                       addattr32(&req.n, sizeof(req), RTA_PROTOINFO, fwmark);
+                       addattr32(&req.n, sizeof(req), FRA_FWMARK, fwmark);
                        if (slash) {
                                if (get_u32(&fwmask, slash+1, 0))
                                        invarg("fwmask value is invalid\n", slash+1);
-                               addattr32(&req.n, sizeof(req), RTA_FWMASK, fwmask);
+                               addattr32(&req.n, sizeof(req), FRA_FWMASK, fwmask);
                        }
                } else if (matches(*argv, "realms") == 0) {
                        __u32 realm;
                        NEXT_ARG();
                        if (get_rt_realms(&realm, *argv))
                                invarg("invalid realms\n", *argv);
-                       addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
+                       addattr32(&req.n, sizeof(req), FRA_FLOW, realm);
                } else if (matches(*argv, "table") == 0 ||
                           strcmp(*argv, "lookup") == 0) {
                        __u32 tid;
@@ -303,13 +318,30 @@ static int iprule_modify(int cmd, int argc, char **argv)
                                req.r.rtm_table = tid;
                        else {
                                req.r.rtm_table = RT_TABLE_UNSPEC;
-                               addattr32(&req.n, sizeof(req), RTA_TABLE, tid);
+                               addattr32(&req.n, sizeof(req), FRA_TABLE, tid);
                        }
                        table_ok = 1;
+               } else if (matches(*argv, "suppress_prefixlength") == 0 ||
+                          strcmp(*argv, "sup_pl") == 0) {
+                       int pl;
+                       NEXT_ARG();
+                       if (get_s32(&pl, *argv, 0) || pl < 0)
+                               invarg("suppress_prefixlength value is invalid\n", *argv);
+                       addattr32(&req.n, sizeof(req), FRA_SUPPRESS_PREFIXLEN, pl);
+               } else if (matches(*argv, "suppress_ifgroup") == 0 ||
+                          strcmp(*argv, "sup_group") == 0) {
+                       NEXT_ARG();
+                       int group;
+                       if (rtnl_group_a2n(&group, *argv))
+                               invarg("Invalid \"suppress_ifgroup\" value\n", *argv);
+                       addattr32(&req.n, sizeof(req), FRA_SUPPRESS_IFGROUP, group);
                } else if (strcmp(*argv, "dev") == 0 ||
                           strcmp(*argv, "iif") == 0) {
                        NEXT_ARG();
-                       addattr_l(&req.n, sizeof(req), RTA_IIF, *argv, strlen(*argv)+1);
+                       addattr_l(&req.n, sizeof(req), FRA_IFNAME, *argv, strlen(*argv)+1);
+               } else if (strcmp(*argv, "oif") == 0) {
+                       NEXT_ARG();
+                       addattr_l(&req.n, sizeof(req), FRA_OIFNAME, *argv, strlen(*argv)+1);
                } else if (strcmp(*argv, "nat") == 0 ||
                           matches(*argv, "map-to") == 0) {
                        NEXT_ARG();
@@ -348,8 +380,8 @@ static int iprule_modify(int cmd, int argc, char **argv)
        if (!table_ok && cmd == RTM_NEWRULE)
                req.r.rtm_table = RT_TABLE_MAIN;
 
-       if (rtnl_talk(&rth, &req.n, 0, 0, NULL, NULL, NULL) < 0)
-               return 2;
+       if (rtnl_talk(&rth, &req.n, NULL, 0) < 0)
+               return -2;
 
        return 0;
 }
@@ -360,22 +392,22 @@ static int flush_rule(const struct sockaddr_nl *who, struct nlmsghdr *n, void *a
        struct rtnl_handle rth2;
        struct rtmsg *r = NLMSG_DATA(n);
        int len = n->nlmsg_len;
-       struct rtattr * tb[RTA_MAX+1];
+       struct rtattr * tb[FRA_MAX+1];
 
        len -= NLMSG_LENGTH(sizeof(*r));
        if (len < 0)
                return -1;
 
-       parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
+       parse_rtattr(tb, FRA_MAX, RTM_RTA(r), len);
 
-       if (tb[RTA_PRIORITY]) {
+       if (tb[FRA_PRIORITY]) {
                n->nlmsg_type = RTM_DELRULE;
                n->nlmsg_flags = NLM_F_REQUEST;
 
                if (rtnl_open(&rth2, 0) < 0)
                        return -1;
 
-               if (rtnl_talk(&rth2, n, 0, 0, NULL, NULL, NULL) < 0)
+               if (rtnl_talk(&rth2, n, NULL, 0) < 0)
                        return -2;
 
                rtnl_close(&rth2);
@@ -401,7 +433,7 @@ static int iprule_flush(int argc, char **argv)
                return 1;
        }
 
-       if (rtnl_dump_filter(&rth, flush_rule, NULL, NULL, NULL) < 0) {
+       if (rtnl_dump_filter(&rth, flush_rule, NULL) < 0) {
                fprintf(stderr, "Flush terminated\n");
                return 1;
        }
@@ -430,3 +462,24 @@ int do_iprule(int argc, char **argv)
        exit(-1);
 }
 
+int do_multirule(int argc, char **argv)
+{
+       switch (preferred_family) {
+       case AF_UNSPEC:
+       case AF_INET:
+               preferred_family = RTNL_FAMILY_IPMR;
+               break;
+       case AF_INET6:
+               preferred_family = RTNL_FAMILY_IP6MR;
+               break;
+       case RTNL_FAMILY_IPMR:
+       case RTNL_FAMILY_IP6MR:
+               break;
+       default:
+               fprintf(stderr, "Multicast rules are only supported for IPv4/IPv6, was: %i\n",
+                       preferred_family);
+               exit(-1);
+       }
+
+       return do_iprule(argc, argv);
+}