* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
- * Authors: J Hadi Salim (hadi@cyberus.ca)
+ * Authors: J Hadi Salim (hadi@cyberus.ca)
+ * Johannes Berg (johannes@sipsolutions.net)
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
-#include <syslog.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include "genl_utils.h"
#define GENL_MAX_FAM_OPS 256
+#define GENL_MAX_FAM_GRPS 256
+
static int usage(void)
{
fprintf(stderr,"Usage: ctrl <CMD>\n" \
int genl_ctrl_resolve_family(const char *family)
{
struct rtnl_handle rth;
- struct nlmsghdr *nlh;
- struct genlmsghdr *ghdr;
int ret = 0;
struct {
struct nlmsghdr n;
+ struct genlmsghdr g;
char buf[4096];
- } req;
-
- memset(&req, 0, sizeof(req));
-
- nlh = &req.n;
- nlh->nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN);
- nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
- nlh->nlmsg_type = GENL_ID_CTRL;
-
- ghdr = NLMSG_DATA(&req.n);
- ghdr->cmd = CTRL_CMD_GETFAMILY;
+ } req = {
+ .n.nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN),
+ .n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
+ .n.nlmsg_type = GENL_ID_CTRL,
+ .g.cmd = CTRL_CMD_GETFAMILY,
+ };
+ struct nlmsghdr *nlh = &req.n;
+ struct genlmsghdr *ghdr = &req.g;
+ struct nlmsghdr *answer = NULL;
if (rtnl_open_byproto(&rth, 0, NETLINK_GENERIC) < 0) {
fprintf(stderr, "Cannot open generic netlink socket\n");
addattr_l(nlh, 128, CTRL_ATTR_FAMILY_NAME, family, strlen(family) + 1);
- if (rtnl_talk(&rth, nlh, 0, 0, nlh, NULL, NULL) < 0) {
+ if (rtnl_talk(&rth, nlh, &answer) < 0) {
fprintf(stderr, "Error talking to the kernel\n");
goto errout;
}
{
struct rtattr *tb[CTRL_ATTR_MAX + 1];
- struct genlmsghdr *ghdr = NLMSG_DATA(nlh);
- int len = nlh->nlmsg_len;
+ int len = answer->nlmsg_len;
struct rtattr *attrs;
- if (nlh->nlmsg_type != GENL_ID_CTRL) {
+ if (answer->nlmsg_type != GENL_ID_CTRL) {
fprintf(stderr, "Not a controller message, nlmsg_len=%d "
- "nlmsg_type=0x%x\n", nlh->nlmsg_len, nlh->nlmsg_type);
+ "nlmsg_type=0x%x\n", answer->nlmsg_len, answer->nlmsg_type);
goto errout;
}
if (ghdr->cmd != CTRL_CMD_NEWFAMILY) {
- fprintf(stderr, "Unkown controller command %d\n", ghdr->cmd);
+ fprintf(stderr, "Unknown controller command %d\n", ghdr->cmd);
goto errout;
}
if (len < 0) {
fprintf(stderr, "wrong controller message len %d\n", len);
+ free(answer);
return -1;
}
- attrs = (struct rtattr *) ((char *) ghdr + GENL_HDRLEN);
+ attrs = (struct rtattr *) ((char *) answer + NLMSG_LENGTH(GENL_HDRLEN));
parse_rtattr(tb, CTRL_ATTR_MAX, attrs, len);
if (tb[CTRL_ATTR_FAMILY_ID] == NULL) {
goto errout;
}
- ret = *(__u16 *) RTA_DATA(tb[CTRL_ATTR_FAMILY_ID]);
+ ret = rta_getattr_u16(tb[CTRL_ATTR_FAMILY_ID]);
}
errout:
+ free(answer);
rtnl_close(&rth);
return ret;
}
-void print_ctrl_cmd_flags(FILE *fp, __u32 fl)
+static void print_ctrl_cmd_flags(FILE *fp, __u32 fl)
{
fprintf(fp, "\n\t\tCapabilities (0x%x):\n ", fl);
if (!fl) {
fprintf(fp, "\n");
}
-
+
static int print_ctrl_cmds(FILE *fp, struct rtattr *arg, __u32 ctrl_ver)
{
struct rtattr *tb[CTRL_ATTR_OP_MAX + 1];
}
+static int print_ctrl_grp(FILE *fp, struct rtattr *arg, __u32 ctrl_ver)
+{
+ struct rtattr *tb[CTRL_ATTR_MCAST_GRP_MAX + 1];
+
+ if (arg == NULL)
+ return -1;
+
+ parse_rtattr_nested(tb, CTRL_ATTR_MCAST_GRP_MAX, arg);
+ if (tb[2]) {
+ __u32 *id = RTA_DATA(tb[CTRL_ATTR_MCAST_GRP_ID]);
+ fprintf(fp, " ID-0x%x ",*id);
+ }
+ if (tb[1]) {
+ char *name = RTA_DATA(tb[CTRL_ATTR_MCAST_GRP_NAME]);
+ fprintf(fp, " name: %s ", name);
+ }
+ return 0;
+
+}
+
/*
* The controller sends one nlmsg per family
*/
-static int print_ctrl(const struct sockaddr_nl *who, struct nlmsghdr *n,
- void *arg)
+static int print_ctrl(const struct sockaddr_nl *who,
+ struct rtnl_ctrl_data *ctrl,
+ struct nlmsghdr *n, void *arg)
{
struct rtattr *tb[CTRL_ATTR_MAX + 1];
struct genlmsghdr *ghdr = NLMSG_DATA(n);
int len = n->nlmsg_len;
struct rtattr *attrs;
FILE *fp = (FILE *) arg;
- __u32 ctrl_v = 0x1;
+ __u32 ctrl_v = 0x1;
if (n->nlmsg_type != GENL_ID_CTRL) {
fprintf(stderr, "Not a controller message, nlmsg_len=%d "
if (ghdr->cmd != CTRL_CMD_GETFAMILY &&
ghdr->cmd != CTRL_CMD_DELFAMILY &&
- ghdr->cmd != CTRL_CMD_NEWFAMILY) {
- fprintf(stderr, "Unkown controller command %d\n", ghdr->cmd);
+ ghdr->cmd != CTRL_CMD_NEWFAMILY &&
+ ghdr->cmd != CTRL_CMD_NEWMCAST_GRP &&
+ ghdr->cmd != CTRL_CMD_DELMCAST_GRP) {
+ fprintf(stderr, "Unknown controller command %d\n", ghdr->cmd);
return 0;
}
/* end of family::cmds definitions .. */
fprintf(fp,"\n");
}
+
+ if (tb[CTRL_ATTR_MCAST_GROUPS]) {
+ struct rtattr *tb2[GENL_MAX_FAM_GRPS + 1];
+ int i;
+
+ parse_rtattr_nested(tb2, GENL_MAX_FAM_GRPS,
+ tb[CTRL_ATTR_MCAST_GROUPS]);
+ fprintf(fp, "\tmulticast groups:\n");
+
+ for (i = 0; i < GENL_MAX_FAM_GRPS; i++) {
+ if (tb2[i]) {
+ fprintf(fp, "\t\t#%d: ", i);
+ if (0 > print_ctrl_grp(fp, tb2[i], ctrl_v))
+ fprintf(fp, "Error printing group\n");
+ /* for next group */
+ fprintf(fp,"\n");
+ }
+ }
+
+ /* end of family::groups definitions .. */
+ fprintf(fp,"\n");
+ }
+
fflush(fp);
return 0;
}
+static int print_ctrl2(const struct sockaddr_nl *who,
+ struct nlmsghdr *n, void *arg)
+{
+ return print_ctrl(who, NULL, n, arg);
+}
+
static int ctrl_list(int cmd, int argc, char **argv)
{
struct rtnl_handle rth;
- struct nlmsghdr *nlh;
- struct genlmsghdr *ghdr;
int ret = -1;
char d[GENL_NAMSIZ];
struct {
struct nlmsghdr n;
+ struct genlmsghdr g;
char buf[4096];
- } req;
-
- memset(&req, 0, sizeof(req));
-
- nlh = &req.n;
- nlh->nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN);
- nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
- nlh->nlmsg_type = GENL_ID_CTRL;
-
- ghdr = NLMSG_DATA(&req.n);
- ghdr->cmd = CTRL_CMD_GETFAMILY;
+ } req = {
+ .n.nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN),
+ .n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK,
+ .n.nlmsg_type = GENL_ID_CTRL,
+ .g.cmd = CTRL_CMD_GETFAMILY,
+ };
+ struct nlmsghdr *nlh = &req.n;
+ struct nlmsghdr *answer = NULL;
if (rtnl_open_byproto(&rth, 0, NETLINK_GENERIC) < 0) {
fprintf(stderr, "Cannot open generic netlink socket\n");
if (matches(*argv, "name") == 0) {
NEXT_ARG();
- strncpy(d, *argv, sizeof (d) - 1);
+ strlcpy(d, *argv, sizeof(d));
addattr_l(nlh, 128, CTRL_ATTR_FAMILY_NAME,
d, strlen(d) + 1);
} else if (matches(*argv, "id") == 0) {
goto ctrl_done;
}
- if (rtnl_talk(&rth, nlh, 0, 0, nlh, NULL, NULL) < 0) {
+ if (rtnl_talk(&rth, nlh, &answer) < 0) {
fprintf(stderr, "Error talking to the kernel\n");
goto ctrl_done;
}
- if (print_ctrl(NULL, nlh, (void *) stdout) < 0) {
+ if (print_ctrl2(NULL, answer, (void *) stdout) < 0) {
fprintf(stderr, "Dump terminated\n");
goto ctrl_done;
}
nlh->nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
nlh->nlmsg_seq = rth.dump = ++rth.seq;
- if (rtnl_send(&rth, (const char *) nlh, nlh->nlmsg_len) < 0) {
+ if (rtnl_send(&rth, nlh, nlh->nlmsg_len) < 0) {
perror("Failed to send dump request\n");
goto ctrl_done;
}
- rtnl_dump_filter(&rth, print_ctrl, stdout, NULL, NULL);
+ rtnl_dump_filter(&rth, print_ctrl2, stdout);
}
ret = 0;
ctrl_done:
+ free(answer);
rtnl_close(&rth);
return ret;
}
if (matches(*argv, "help") == 0)
return usage();
- fprintf(stderr, "ctrl command \"%s\" is unknown, try \"ctrl -help\".\n",
+ fprintf(stderr, "ctrl command \"%s\" is unknown, try \"ctrl help\".\n",
*argv);
return -1;
struct genl_util ctrl_genl_util = {
.name = "ctrl",
.parse_genlopt = parse_ctrl,
- .print_genlopt = print_ctrl,
+ .print_genlopt = print_ctrl2,
};
projects / mirror_iproute2.git / blobdiff