#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
-#include <syslog.h>
#include <fcntl.h>
#include <string.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
+#include <errno.h>
#include "rt_names.h"
#include "utils.h"
#include "ip_common.h"
-static struct
-{
+static struct {
int family;
int ifindex;
} filter;
+static const char * const rp_filter_names[] = {
+ "off", "strict", "loose"
+};
+
static void usage(void) __attribute__((noreturn));
static void usage(void)
exit(-1);
}
-#define NETCONF_RTA(r) ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct netconfmsg))))
+static void print_onoff(FILE *fp, const char *flag, __u32 val)
+{
+ if (is_json_context())
+ print_bool(PRINT_JSON, flag, NULL, val);
+ else
+ fprintf(fp, "%s %s ", flag, val ? "on" : "off");
+}
-int print_netconf(const struct sockaddr_nl *who, struct rtnl_ctrl_data *ctrl,
- struct nlmsghdr *n, void *arg)
+static struct rtattr *netconf_rta(struct netconfmsg *ncm)
+{
+ return (struct rtattr *)((char *)ncm
+ + NLMSG_ALIGN(sizeof(struct netconfmsg)));
+}
+
+int print_netconf(struct rtnl_ctrl_data *ctrl, struct nlmsghdr *n, void *arg)
{
FILE *fp = (FILE *)arg;
struct netconfmsg *ncm = NLMSG_DATA(n);
int len = n->nlmsg_len;
struct rtattr *tb[NETCONFA_MAX+1];
+ int ifindex = 0;
if (n->nlmsg_type == NLMSG_ERROR)
return -1;
- if (n->nlmsg_type != RTM_NEWNETCONF) {
- fprintf(stderr, "Not RTM_NEWNETCONF: %08x %08x %08x\n",
+
+ if (n->nlmsg_type != RTM_NEWNETCONF &&
+ n->nlmsg_type != RTM_DELNETCONF) {
+ fprintf(stderr, "Not a netconf message: %08x %08x %08x\n",
n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
return -1;
if (filter.family && filter.family != ncm->ncm_family)
return 0;
- parse_rtattr(tb, NETCONFA_MAX, NETCONF_RTA(ncm),
+ parse_rtattr(tb, NETCONFA_MAX, netconf_rta(ncm),
NLMSG_PAYLOAD(n, sizeof(*ncm)));
- switch (ncm->ncm_family) {
- case AF_INET:
- fprintf(fp, "ipv4 ");
- break;
- case AF_INET6:
- fprintf(fp, "ipv6 ");
- break;
- default:
- fprintf(fp, "unknown ");
- break;
- }
+ if (tb[NETCONFA_IFINDEX])
+ ifindex = rta_getattr_u32(tb[NETCONFA_IFINDEX]);
+
+ if (filter.ifindex && filter.ifindex != ifindex)
+ return 0;
+
+ open_json_object(NULL);
+ if (n->nlmsg_type == RTM_DELNETCONF)
+ print_bool(PRINT_ANY, "deleted", "Deleted ", true);
+
+ print_string(PRINT_ANY, "family",
+ "%s ", family_name(ncm->ncm_family));
if (tb[NETCONFA_IFINDEX]) {
- int *ifindex = (int *)RTA_DATA(tb[NETCONFA_IFINDEX]);
+ const char *dev;
- switch (*ifindex) {
+ switch (ifindex) {
case NETCONFA_IFINDEX_ALL:
- fprintf(fp, "all ");
+ dev = "all";
break;
case NETCONFA_IFINDEX_DEFAULT:
- fprintf(fp, "default ");
+ dev = "default";
break;
default:
- fprintf(fp, "dev %s ", ll_index_to_name(*ifindex));
+ dev = ll_index_to_name(ifindex);
break;
}
+ print_color_string(PRINT_ANY, COLOR_IFNAME,
+ "interface", "%s ", dev);
}
if (tb[NETCONFA_FORWARDING])
- fprintf(fp, "forwarding %s ",
- *(int *)RTA_DATA(tb[NETCONFA_FORWARDING])?"on":"off");
+ print_onoff(fp, "forwarding",
+ rta_getattr_u32(tb[NETCONFA_FORWARDING]));
+
if (tb[NETCONFA_RP_FILTER]) {
- int rp_filter = *(int *)RTA_DATA(tb[NETCONFA_RP_FILTER]);
-
- if (rp_filter == 0)
- fprintf(fp, "rp_filter off ");
- else if (rp_filter == 1)
- fprintf(fp, "rp_filter strict ");
- else if (rp_filter == 2)
- fprintf(fp, "rp_filter loose ");
+ __u32 rp_filter = rta_getattr_u32(tb[NETCONFA_RP_FILTER]);
+
+ if (rp_filter < ARRAY_SIZE(rp_filter_names))
+ print_string(PRINT_ANY, "rp_filter",
+ "rp_filter %s ",
+ rp_filter_names[rp_filter]);
else
- fprintf(fp, "rp_filter unknown mode ");
+ print_uint(PRINT_ANY, "rp_filter",
+ "rp_filter %u ", rp_filter);
}
+
if (tb[NETCONFA_MC_FORWARDING])
- fprintf(fp, "mc_forwarding %d ",
- *(int *)RTA_DATA(tb[NETCONFA_MC_FORWARDING]));
+ print_onoff(fp, "mc_forwarding",
+ rta_getattr_u32(tb[NETCONFA_MC_FORWARDING]));
if (tb[NETCONFA_PROXY_NEIGH])
- fprintf(fp, "proxy_neigh %s ",
- *(int *)RTA_DATA(tb[NETCONFA_PROXY_NEIGH])?"on":"off");
+ print_onoff(fp, "proxy_neigh",
+ rta_getattr_u32(tb[NETCONFA_PROXY_NEIGH]));
- fprintf(fp, "\n");
+ if (tb[NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN])
+ print_onoff(fp, "ignore_routes_with_linkdown",
+ rta_getattr_u32(tb[NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN]));
+
+ if (tb[NETCONFA_INPUT])
+ print_onoff(fp, "input", rta_getattr_u32(tb[NETCONFA_INPUT]));
+
+ close_json_object();
+ print_string(PRINT_FP, NULL, "\n", NULL);
fflush(fp);
return 0;
}
-static int print_netconf2(const struct sockaddr_nl *who,
- struct nlmsghdr *n, void *arg)
+static int print_netconf2(struct nlmsghdr *n, void *arg)
{
- return print_netconf(who, NULL, n, arg);
+ return print_netconf(NULL, n, arg);
}
void ipnetconf_reset_filter(int ifindex)
struct nlmsghdr n;
struct netconfmsg ncm;
char buf[1024];
- } req;
+ } req = {
+ .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct netconfmsg)),
+ .n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
+ .n.nlmsg_type = RTM_GETNETCONF,
+ };
ipnetconf_reset_filter(0);
filter.family = preferred_family;
- if (filter.family == AF_UNSPEC)
- filter.family = AF_INET;
while (argc > 0) {
if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
filter.ifindex = ll_name_to_index(*argv);
if (filter.ifindex <= 0) {
- fprintf(stderr, "Device \"%s\" does not exist.\n",
+ fprintf(stderr,
+ "Device \"%s\" does not exist.\n",
*argv);
return -1;
}
}
ll_init_map(&rth);
- if (filter.ifindex) {
- memset(&req, 0, sizeof(req));
- req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct netconfmsg));
- req.n.nlmsg_flags = NLM_F_REQUEST|NLM_F_ACK;
- req.n.nlmsg_type = RTM_GETNETCONF;
+
+ if (filter.ifindex && filter.family != AF_UNSPEC) {
req.ncm.ncm_family = filter.family;
- if (filter.ifindex)
- addattr_l(&req.n, sizeof(req), NETCONFA_IFINDEX,
- &filter.ifindex, sizeof(filter.ifindex));
+ addattr_l(&req.n, sizeof(req), NETCONFA_IFINDEX,
+ &filter.ifindex, sizeof(filter.ifindex));
if (rtnl_send(&rth, &req.n, req.n.nlmsg_len) < 0) {
perror("Can not send request");
}
rtnl_listen(&rth, print_netconf, stdout);
} else {
+ rth.flags = RTNL_HANDLE_F_SUPPRESS_NLERR;
dump:
- if (rtnl_wilddump_request(&rth, filter.family, RTM_GETNETCONF) < 0) {
+ if (rtnl_netconfdump_req(&rth, filter.family) < 0) {
perror("Cannot send dump request");
exit(1);
}
+
+ new_json_obj(json);
if (rtnl_dump_filter(&rth, print_netconf2, stdout) < 0) {
+ /* kernel does not support netconf dump on AF_UNSPEC;
+ * fall back to requesting by family
+ */
+ if (errno == EOPNOTSUPP &&
+ filter.family == AF_UNSPEC) {
+ filter.family = AF_INET;
+ goto dump;
+ }
+ perror("RTNETLINK answers");
fprintf(stderr, "Dump terminated\n");
exit(1);
}
- if (preferred_family == AF_UNSPEC) {
+ delete_json_obj();
+ if (preferred_family == AF_UNSPEC && filter.family == AF_INET) {
preferred_family = AF_INET6;
filter.family = AF_INET6;
goto dump;
} else
return do_show(0, NULL);
- fprintf(stderr, "Command \"%s\" is unknown, try \"ip netconf help\".\n", *argv);
+ fprintf(stderr,
+ "Command \"%s\" is unknown, try \"ip netconf help\".\n",
+ *argv);
exit(-1);
}
projects / mirror_iproute2.git / blobdiff