/* vi: set sw=4 ts=4: */
/*
- * iproute.c "ip route".
- *
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*
* Changes:
*
- * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
+ * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
* Kunihiro Ishiguro <kunihiro@zebra.org> 001102: rtnh_ifindex was not initialized
*/
-#include "ip_common.h" /* #include "libbb.h" is inside */
+#include "ip_common.h" /* #include "libbb.h" is inside */
#include "rt_names.h"
#include "utils.h"
#endif
-typedef struct filter_t {
+struct filter_t {
int tb;
smallint flushed;
char *flushb;
int flushp;
int flushe;
struct rtnl_handle *rth;
- int protocol, protocolmask;
- int scope, scopemask;
- int type, typemask;
- int tos, tosmask;
- int iif, iifmask;
- int oif, oifmask;
- int realm, realmmask;
- inet_prefix rprefsrc;
+ //int protocol, protocolmask; - write-only fields?!
+ //int scope, scopemask; - unused
+ //int type; - read-only
+ //int typemask; - unused
+ //int tos, tosmask; - unused
+ int iif;
+ int oif;
+ //int realm, realmmask; - unused
+ //inet_prefix rprefsrc; - read-only
inet_prefix rvia;
inet_prefix rdst;
inet_prefix mdst;
inet_prefix rsrc;
inet_prefix msrc;
-} filter_t;
+} FIX_ALIASING;
+typedef struct filter_t filter_t;
-#define filter (*(filter_t*)&bb_common_bufsiz1)
+#define G_filter (*(filter_t*)&bb_common_bufsiz1)
static int flush_update(void)
{
- if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
- bb_perror_msg("failed to send flush request");
+ if (rtnl_send(G_filter.rth, G_filter.flushb, G_filter.flushp) < 0) {
+ bb_perror_msg("can't send flush request");
return -1;
}
- filter.flushp = 0;
+ G_filter.flushp = 0;
return 0;
}
if (hz_internal)
return hz_internal;
- fp = fopen("/proc/net/psched", "r");
+ fp = fopen_for_read("/proc/net/psched");
if (fp) {
unsigned nom, denom;
return hz_internal;
}
-static int print_route(const struct sockaddr_nl *who UNUSED_PARAM,
+static int FAST_FUNC print_route(const struct sockaddr_nl *who UNUSED_PARAM,
struct nlmsghdr *n, void *arg UNUSED_PARAM)
{
struct rtmsg *r = NLMSG_DATA(n);
int len = n->nlmsg_len;
- struct rtattr * tb[RTA_MAX+1];
+ struct rtattr *tb[RTA_MAX+1];
char abuf[256];
inet_prefix dst;
inet_prefix src;
n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
return 0;
}
- if (filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
+ if (G_filter.flushb && n->nlmsg_type != RTM_NEWROUTE)
return 0;
len -= NLMSG_LENGTH(sizeof(*r));
if (len < 0)
host_len = 32;
if (r->rtm_family == AF_INET6) {
- if (filter.tb) {
- if (filter.tb < 0) {
+ if (G_filter.tb) {
+ if (G_filter.tb < 0) {
if (!(r->rtm_flags & RTM_F_CLONED)) {
return 0;
}
if (r->rtm_flags & RTM_F_CLONED) {
return 0;
}
- if (filter.tb == RT_TABLE_LOCAL) {
+ if (G_filter.tb == RT_TABLE_LOCAL) {
if (r->rtm_type != RTN_LOCAL) {
return 0;
}
- } else if (filter.tb == RT_TABLE_MAIN) {
+ } else if (G_filter.tb == RT_TABLE_MAIN) {
if (r->rtm_type == RTN_LOCAL) {
return 0;
}
}
}
} else {
- if (filter.tb > 0 && filter.tb != r->rtm_table) {
+ if (G_filter.tb > 0 && G_filter.tb != r->rtm_table) {
return 0;
}
}
- if (filter.rdst.family &&
- (r->rtm_family != filter.rdst.family || filter.rdst.bitlen > r->rtm_dst_len)) {
+ if (G_filter.rdst.family
+ && (r->rtm_family != G_filter.rdst.family || G_filter.rdst.bitlen > r->rtm_dst_len)
+ ) {
return 0;
}
- if (filter.mdst.family &&
- (r->rtm_family != filter.mdst.family ||
- (filter.mdst.bitlen >= 0 && filter.mdst.bitlen < r->rtm_dst_len))) {
+ if (G_filter.mdst.family
+ && (r->rtm_family != G_filter.mdst.family
+ || (G_filter.mdst.bitlen >= 0 && G_filter.mdst.bitlen < r->rtm_dst_len)
+ )
+ ) {
return 0;
}
- if (filter.rsrc.family &&
- (r->rtm_family != filter.rsrc.family || filter.rsrc.bitlen > r->rtm_src_len)) {
+ if (G_filter.rsrc.family
+ && (r->rtm_family != G_filter.rsrc.family || G_filter.rsrc.bitlen > r->rtm_src_len)
+ ) {
return 0;
}
- if (filter.msrc.family &&
- (r->rtm_family != filter.msrc.family ||
- (filter.msrc.bitlen >= 0 && filter.msrc.bitlen < r->rtm_src_len))) {
+ if (G_filter.msrc.family
+ && (r->rtm_family != G_filter.msrc.family
+ || (G_filter.msrc.bitlen >= 0 && G_filter.msrc.bitlen < r->rtm_src_len)
+ )
+ ) {
return 0;
}
memset(tb, 0, sizeof(tb));
+ memset(&src, 0, sizeof(src));
+ memset(&dst, 0, sizeof(dst));
parse_rtattr(tb, RTA_MAX, RTM_RTA(r), len);
- if (filter.rdst.family && inet_addr_match(&dst, &filter.rdst, filter.rdst.bitlen))
- return 0;
- if (filter.mdst.family && filter.mdst.bitlen >= 0 &&
- inet_addr_match(&dst, &filter.mdst, r->rtm_dst_len))
- return 0;
+ if (tb[RTA_SRC]) {
+ src.bitlen = r->rtm_src_len;
+ src.bytelen = (r->rtm_family == AF_INET6 ? 16 : 4);
+ memcpy(src.data, RTA_DATA(tb[RTA_SRC]), src.bytelen);
+ }
+ if (tb[RTA_DST]) {
+ dst.bitlen = r->rtm_dst_len;
+ dst.bytelen = (r->rtm_family == AF_INET6 ? 16 : 4);
+ memcpy(dst.data, RTA_DATA(tb[RTA_DST]), dst.bytelen);
+ }
- if (filter.rsrc.family && inet_addr_match(&src, &filter.rsrc, filter.rsrc.bitlen))
+ if (G_filter.rdst.family
+ && inet_addr_match(&dst, &G_filter.rdst, G_filter.rdst.bitlen)
+ ) {
return 0;
- if (filter.msrc.family && filter.msrc.bitlen >= 0 &&
- inet_addr_match(&src, &filter.msrc, r->rtm_src_len))
+ }
+ if (G_filter.mdst.family
+ && G_filter.mdst.bitlen >= 0
+ && inet_addr_match(&dst, &G_filter.mdst, r->rtm_dst_len)
+ ) {
return 0;
-
- if (filter.flushb &&
- r->rtm_family == AF_INET6 &&
- r->rtm_dst_len == 0 &&
- r->rtm_type == RTN_UNREACHABLE &&
- tb[RTA_PRIORITY] &&
- *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1)
+ }
+ if (G_filter.rsrc.family
+ && inet_addr_match(&src, &G_filter.rsrc, G_filter.rsrc.bitlen)
+ ) {
+ return 0;
+ }
+ if (G_filter.msrc.family && G_filter.msrc.bitlen >= 0
+ && inet_addr_match(&src, &G_filter.msrc, r->rtm_src_len)
+ ) {
return 0;
+ }
+ if (G_filter.oif != 0) {
+ if (!tb[RTA_OIF])
+ return 0;
+ if (G_filter.oif != *(int*)RTA_DATA(tb[RTA_OIF]))
+ return 0;
+ }
- if (filter.flushb) {
+ if (G_filter.flushb) {
struct nlmsghdr *fn;
- if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
+
+ /* We are creating route flush commands */
+
+ if (r->rtm_family == AF_INET6
+ && r->rtm_dst_len == 0
+ && r->rtm_type == RTN_UNREACHABLE
+ && tb[RTA_PRIORITY]
+ && *(int*)RTA_DATA(tb[RTA_PRIORITY]) == -1
+ ) {
+ return 0;
+ }
+
+ if (NLMSG_ALIGN(G_filter.flushp) + n->nlmsg_len > G_filter.flushe) {
if (flush_update())
bb_error_msg_and_die("flush");
}
- fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
+ fn = (void*)(G_filter.flushb + NLMSG_ALIGN(G_filter.flushp));
memcpy(fn, n, n->nlmsg_len);
fn->nlmsg_type = RTM_DELROUTE;
fn->nlmsg_flags = NLM_F_REQUEST;
- fn->nlmsg_seq = ++filter.rth->seq;
- filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
- filter.flushed = 1;
+ fn->nlmsg_seq = ++G_filter.rth->seq;
+ G_filter.flushp = (((char*)fn) + n->nlmsg_len) - G_filter.flushb;
+ G_filter.flushed = 1;
return 0;
}
+ /* We are printing routes */
+
if (n->nlmsg_type == RTM_DELROUTE) {
printf("Deleted ");
}
- if (r->rtm_type != RTN_UNICAST && !filter.type) {
- printf("%s ", rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)));
+ if (r->rtm_type != RTN_UNICAST /* && !G_filter.type - always 0 */) {
+ printf("%s ", rtnl_rtntype_n2a(r->rtm_type, b1));
}
if (tb[RTA_DST]) {
if (r->rtm_dst_len != host_len) {
printf("%s/%u ", rt_addr_n2a(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_DST]),
RTA_DATA(tb[RTA_DST]),
abuf, sizeof(abuf)),
r->rtm_dst_len
if (tb[RTA_SRC]) {
if (r->rtm_src_len != host_len) {
printf("from %s/%u ", rt_addr_n2a(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_SRC]),
RTA_DATA(tb[RTA_SRC]),
abuf, sizeof(abuf)),
r->rtm_src_len
} else if (r->rtm_src_len) {
printf("from 0/%u ", r->rtm_src_len);
}
- if (tb[RTA_GATEWAY] && filter.rvia.bitlen != host_len) {
+ if (tb[RTA_GATEWAY] && G_filter.rvia.bitlen != host_len) {
printf("via %s ", format_host(r->rtm_family,
RTA_PAYLOAD(tb[RTA_GATEWAY]),
RTA_DATA(tb[RTA_GATEWAY]),
abuf, sizeof(abuf)));
}
- if (tb[RTA_OIF] && filter.oifmask != -1) {
+ if (tb[RTA_OIF]) {
printf("dev %s ", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_OIF])));
}
- if (tb[RTA_PREFSRC] && filter.rprefsrc.bitlen != host_len) {
+ /* Todo: parse & show "proto kernel", "scope link" here */
+
+ if (tb[RTA_PREFSRC] && /*G_filter.rprefsrc.bitlen - always 0*/ 0 != host_len) {
/* Do not use format_host(). It is our local addr
and symbolic name will not be useful.
*/
printf(" src %s ", rt_addr_n2a(r->rtm_family,
- RTA_PAYLOAD(tb[RTA_PREFSRC]),
RTA_DATA(tb[RTA_PREFSRC]),
abuf, sizeof(abuf)));
}
printf(" error %d", ci->rta_error);
}
}
- if (tb[RTA_IIF] && filter.iifmask != -1) {
+ if (tb[RTA_IIF] && G_filter.iif == 0) {
printf(" iif %s", ll_index_to_name(*(int*)RTA_DATA(tb[RTA_IIF])));
}
bb_putchar('\n');
static int iproute_modify(int cmd, unsigned flags, char **argv)
{
static const char keywords[] ALIGN1 =
- "src\0""via\0""mtu\0""lock\0""protocol\0"USE_FEATURE_IP_RULE("table\0")
- "dev\0""oif\0""to\0";
+ "src\0""via\0""mtu\0""lock\0""protocol\0"IF_FEATURE_IP_RULE("table\0")
+ "dev\0""oif\0""to\0""metric\0";
enum {
ARG_src,
ARG_via,
ARG_mtu, PARM_lock,
ARG_protocol,
-USE_FEATURE_IP_RULE(ARG_table,)
+IF_FEATURE_IP_RULE(ARG_table,)
ARG_dev,
ARG_oif,
- ARG_to
+ ARG_to,
+ ARG_metric,
};
enum {
gw_ok = 1 << 0,
};
struct rtnl_handle rth;
struct {
- struct nlmsghdr n;
- struct rtmsg r;
- char buf[1024];
+ struct nlmsghdr n;
+ struct rtmsg r;
+ char buf[1024];
} req;
char mxbuf[256];
struct rtattr * mxrta = (void*)mxbuf;
mxlock |= (1 << RTAX_MTU);
NEXT_ARG();
}
- if (get_unsigned(&mtu, *argv, 0))
- invarg(*argv, "mtu");
+ mtu = get_unsigned(*argv, "mtu");
rta_addattr32(mxrta, sizeof(mxbuf), RTAX_MTU, mtu);
} else if (arg == ARG_protocol) {
uint32_t prot;
} else if (arg == ARG_dev || arg == ARG_oif) {
NEXT_ARG();
d = *argv;
+ } else if (arg == ARG_metric) {
+ uint32_t metric;
+ NEXT_ARG();
+ metric = get_u32(*argv, "metric");
+ addattr32(&req.n, sizeof(req), RTA_PRIORITY, metric);
} else {
int type;
inet_prefix dst;
NEXT_ARG();
}
if ((**argv < '0' || **argv > '9')
- && rtnl_rtntype_a2n(&type, *argv) == 0) {
+ && rtnl_rtntype_a2n(&type, *argv) == 0
+ ) {
NEXT_ARG();
req.r.rtm_type = type;
ok |= type_ok;
if (req.r.rtm_type == RTN_LOCAL || req.r.rtm_type == RTN_NAT)
req.r.rtm_scope = RT_SCOPE_HOST;
- else if (req.r.rtm_type == RTN_BROADCAST ||
- req.r.rtm_type == RTN_MULTICAST ||
- req.r.rtm_type == RTN_ANYCAST)
+ else
+ if (req.r.rtm_type == RTN_BROADCAST
+ || req.r.rtm_type == RTN_MULTICAST
+ || req.r.rtm_type == RTN_ANYCAST
+ ) {
req.r.rtm_scope = RT_SCOPE_LINK;
+ }
else if (req.r.rtm_type == RTN_UNICAST || req.r.rtm_type == RTN_UNSPEC) {
if (cmd == RTM_DELROUTE)
req.r.rtm_scope = RT_SCOPE_NOWHERE;
}
if (write(flush_fd, "-1", 2) < 2) {
- bb_perror_msg("cannot flush routing cache");
+ bb_perror_msg("can't flush routing cache");
return;
}
close(flush_fd);
static void iproute_reset_filter(void)
{
- memset(&filter, 0, sizeof(filter));
- filter.mdst.bitlen = -1;
- filter.msrc.bitlen = -1;
+ memset(&G_filter, 0, sizeof(G_filter));
+ G_filter.mdst.bitlen = -1;
+ G_filter.msrc.bitlen = -1;
}
/* Return value becomes exitcode. It's okay to not return at all */
int arg, parm;
iproute_reset_filter();
- filter.tb = RT_TABLE_MAIN;
+ G_filter.tb = RT_TABLE_MAIN;
if (flush && !*argv)
bb_error_msg_and_die(bb_msg_requires_arg, "\"ip route flush\"");
if (arg == KW_proto) {
uint32_t prot = 0;
NEXT_ARG();
- filter.protocolmask = -1;
+ //G_filter.protocolmask = -1;
if (rtnl_rtprot_a2n(&prot, *argv)) {
if (index_in_strings(keywords, *argv) != KW_all)
invarg(*argv, "protocol");
prot = 0;
- filter.protocolmask = 0;
+ //G_filter.protocolmask = 0;
}
- filter.protocol = prot;
+ //G_filter.protocol = prot;
} else if (arg == KW_dev || arg == KW_oif) {
NEXT_ARG();
od = *argv;
id = *argv;
} else if (arg == KW_via) {
NEXT_ARG();
- get_prefix(&filter.rvia, *argv, do_ipv6);
+ get_prefix(&G_filter.rvia, *argv, do_ipv6);
} else if (arg == KW_table) { /* table all/cache/main */
NEXT_ARG();
parm = index_in_substrings(keywords, *argv);
if (parm == KW_cache)
- filter.tb = -1;
+ G_filter.tb = -1;
else if (parm == KW_all)
- filter.tb = 0;
+ G_filter.tb = 0;
else if (parm != KW_main) {
#if ENABLE_FEATURE_IP_RULE
uint32_t tid;
if (rtnl_rttable_a2n(&tid, *argv))
invarg(*argv, "table");
- filter.tb = tid;
+ G_filter.tb = tid;
#else
invarg(*argv, "table");
#endif
} else if (arg == KW_cache) {
/* The command 'ip route flush cache' is used by OpenSWAN.
* Assuming it's a synonym for 'ip route flush table cache' */
- filter.tb = -1;
+ G_filter.tb = -1;
} else if (arg == KW_from) {
NEXT_ARG();
parm = index_in_substrings(keywords, *argv);
if (parm == KW_root) {
NEXT_ARG();
- get_prefix(&filter.rsrc, *argv, do_ipv6);
+ get_prefix(&G_filter.rsrc, *argv, do_ipv6);
} else if (parm == KW_match) {
NEXT_ARG();
- get_prefix(&filter.msrc, *argv, do_ipv6);
+ get_prefix(&G_filter.msrc, *argv, do_ipv6);
} else {
if (parm == KW_exact)
NEXT_ARG();
- get_prefix(&filter.msrc, *argv, do_ipv6);
- filter.rsrc = filter.msrc;
+ get_prefix(&G_filter.msrc, *argv, do_ipv6);
+ G_filter.rsrc = G_filter.msrc;
}
} else { /* "to" is the default parameter */
if (arg == KW_to) {
/* parm = arg; - would be more plausible, but we reuse 'arg' here */
if (arg == KW_root) {
NEXT_ARG();
- get_prefix(&filter.rdst, *argv, do_ipv6);
+ get_prefix(&G_filter.rdst, *argv, do_ipv6);
} else if (arg == KW_match) {
NEXT_ARG();
- get_prefix(&filter.mdst, *argv, do_ipv6);
+ get_prefix(&G_filter.mdst, *argv, do_ipv6);
} else { /* "to exact" is the default */
if (arg == KW_exact)
NEXT_ARG();
- get_prefix(&filter.mdst, *argv, do_ipv6);
- filter.rdst = filter.mdst;
+ get_prefix(&G_filter.mdst, *argv, do_ipv6);
+ G_filter.rdst = G_filter.mdst;
}
}
argv++;
}
- if (do_ipv6 == AF_UNSPEC && filter.tb) {
+ if (do_ipv6 == AF_UNSPEC && G_filter.tb) {
do_ipv6 = AF_INET;
}
if (id) {
idx = xll_name_to_index(id);
- filter.iif = idx;
- filter.iifmask = -1;
+ G_filter.iif = idx;
}
if (od) {
idx = xll_name_to_index(od);
- filter.oif = idx;
- filter.oifmask = -1;
+ G_filter.oif = idx;
}
}
if (flush) {
char flushb[4096-512];
- if (filter.tb == -1) { /* "flush table cache" */
+ if (G_filter.tb == -1) { /* "flush table cache" */
if (do_ipv6 != AF_INET6)
iproute_flush_cache();
if (do_ipv6 == AF_INET)
return 0;
}
- filter.flushb = flushb;
- filter.flushp = 0;
- filter.flushe = sizeof(flushb);
- filter.rth = &rth;
+ G_filter.flushb = flushb;
+ G_filter.flushp = 0;
+ G_filter.flushe = sizeof(flushb);
+ G_filter.rth = &rth;
for (;;) {
xrtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE);
- filter.flushed = 0;
+ G_filter.flushed = 0;
xrtnl_dump_filter(&rth, print_route, NULL);
- if (filter.flushed == 0)
+ if (G_filter.flushed == 0)
return 0;
if (flush_update())
return 1;
}
}
- if (filter.tb != -1) {
+ if (G_filter.tb != -1) {
xrtnl_wilddump_request(&rth, do_ipv6, RTM_GETROUTE);
} else if (rtnl_rtcache_request(&rth, do_ipv6) < 0) {
- bb_perror_msg_and_die("cannot send dump request");
+ bb_perror_msg_and_die("can't send dump request");
}
xrtnl_dump_filter(&rth, print_route, NULL);
}
req.r.rtm_dst_len = addr.bitlen;
}
- argv++;
}
+ argv++;
}
if (req.r.rtm_dst_len == 0) {
tb[RTA_PREFSRC]->rta_type = RTA_SRC;
r->rtm_src_len = 8*RTA_PAYLOAD(tb[RTA_PREFSRC]);
} else if (!tb[RTA_SRC]) {
- bb_error_msg_and_die("failed to connect the route");
+ bb_error_msg_and_die("can't connect the route");
}
if (!odev && tb[RTA_OIF]) {
tb[RTA_OIF]->rta_type = 0;
}
/* Return value becomes exitcode. It's okay to not return at all */
-int do_iproute(char **argv)
+int FAST_FUNC do_iproute(char **argv)
{
static const char ip_route_commands[] ALIGN1 =
/*0-3*/ "add\0""append\0""change\0""chg\0"
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