blob: 0714880d3434c5504f813139d4494902bcaf134a [file] [log] [blame]
/*
* teamd_state.c - Teamd state
* Copyright (C) 2013-2015 Jiri Pirko <jiri@resnulli.us>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdbool.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <jansson.h>
#include <team.h>
#include <private/misc.h>
#include "config.h"
#include "teamd.h"
#include "teamd_state.h"
#include "teamd_json.h"
struct teamd_state_val_item {
struct list_item list;
char *subpath;
const struct teamd_state_val *val;
void *priv;
const struct teamd_state_val *parent_val;
bool per_port;
struct teamd_port *tdport;
};
static struct teamd_state_val_item *
__find_val_item(struct teamd_context *ctx,
const struct teamd_state_val *val,
void *priv, const struct teamd_state_val *parent_val)
{
struct teamd_state_val_item *item;
list_for_each_node_entry(item, &ctx->state_val_list, list) {
if (item->val == val && item->parent_val == parent_val &&
item->priv == priv)
return item;
}
return NULL;
}
void __unreg_val(struct teamd_context *ctx, const struct teamd_state_val *val,
void *priv, const struct teamd_state_val *parent_val)
{
struct teamd_state_val_item *item;
if (val->type == TEAMD_STATE_ITEM_TYPE_NODE) {
int i;
TEAMD_BUG_ON(!val->vals); /* consistency check */
for (i = 0; i < val->vals_count; i++)
__unreg_val(ctx, &val->vals[i], priv, val);
} else {
item = __find_val_item(ctx, val, priv, parent_val);
if (!item)
return;
list_del(&item->list);
free(item->subpath);
free(item);
}
}
int __reg_val(struct teamd_context *ctx, const struct teamd_state_val *val,
void *priv, const char *parent_subpath, const char *val_subpath,
bool per_port, struct teamd_port *tdport,
const struct teamd_state_val *parent_val)
{
char *subpath;
int ret;
int err;
if (val->type == TEAMD_STATE_ITEM_TYPE_NODE && !val_subpath) {
subpath = strdup(parent_subpath);
if (!subpath)
return -ENOMEM;
} else {
ret = asprintf(&subpath, "%s.%s", parent_subpath, val_subpath);
if (ret == -1)
return -ENOMEM;
}
if (val->per_port)
per_port = true;
if (per_port && tdport) {
err = -EINVAL;
goto errout;
}
if (val->type == TEAMD_STATE_ITEM_TYPE_NODE) {
int i;
TEAMD_BUG_ON(!val->vals); /* consistency check */
for (i = 0; i < val->vals_count; i++) {
const struct teamd_state_val *child_val = &val->vals[i];
err = __reg_val(ctx, child_val, priv, subpath,
child_val->subpath, per_port,
tdport, val);
if (err)
break;
}
/* rollback in case for did not finish */
if (i != val->vals_count)
while (--i >= 0)
__unreg_val(ctx, &val->vals[i], priv, val);
free(subpath);
} else {
struct teamd_state_val_item *item;
if (__find_val_item(ctx, val, priv, parent_val)) {
err = -EEXIST;
goto errout;
}
item = malloc(sizeof(*item));
if (!item) {
err = -ENOMEM;
goto errout;
}
item->subpath = subpath;
item->val = val;
item->parent_val = parent_val;
item->priv = priv;
item->per_port = per_port;
item->tdport = tdport;
list_add_tail(&ctx->state_val_list, &item->list);
}
return 0;
errout:
free(subpath);
return err;
}
int teamd_state_val_register_ex(struct teamd_context *ctx,
const struct teamd_state_val *val,
void *priv, struct teamd_port *tdport,
const char *fmt, ...)
{
va_list ap;
char *val_subpath;
int ret;
int err;
va_start(ap, fmt);
ret = vasprintf(&val_subpath, fmt, ap);
va_end(ap);
if (ret == -1)
return -ENOMEM;
err = __reg_val(ctx, val, priv, "", val_subpath, false, tdport, NULL);
free(val_subpath);
return err;
}
int teamd_state_val_register(struct teamd_context *ctx,
const struct teamd_state_val *val,
void *priv)
{
return __reg_val(ctx, val, priv, "", val->subpath, false, NULL, NULL);
}
void teamd_state_val_unregister(struct teamd_context *ctx,
const struct teamd_state_val *val,
void *priv)
{
__unreg_val(ctx, val, priv, NULL);
}
#define TEAMD_STATE_PER_PORT_PREFIX "ports."
static int teamd_state_build_val_json_subpath(json_t **p_vg_json_obj,
json_t *root_json_obj,
struct teamd_port *tdport,
const char *subpath)
{
char *path;
int ret;
int err;
char *dot;
if (tdport)
ret = asprintf(&path, "$." TEAMD_STATE_PER_PORT_PREFIX "\"%s\"%s",
tdport->ifname, subpath);
else
ret = asprintf(&path, "$%s", subpath);
if (ret == -1)
return -ENOMEM;
dot = strrchr(path, '.');
TEAMD_BUG_ON(!dot);
*dot = '\0';
err = teamd_json_path_lite_build(p_vg_json_obj, root_json_obj, path);
free(path);
return err;
}
static int teamd_state_val_dump(struct teamd_context *ctx,
json_t *root_json_obj,
struct teamd_port *tdport,
struct teamd_state_val_item *item)
{
const struct teamd_state_val *val = item->val;
char *subpath = item->subpath;
void *priv = item->priv;
char *subpath_end;
struct team_state_gsc gsc;
json_t *val_json_obj = NULL; /* gcc needs this initialized */
json_t *vg_json_obj = NULL; /* gcc needs this initialized */
int err;
int ret;
subpath_end = strrchr(subpath, '.');
TEAMD_BUG_ON(!subpath_end);
subpath_end++;
err = teamd_state_build_val_json_subpath(&vg_json_obj, root_json_obj,
tdport, subpath);
if (err)
return err;
memset(&gsc, 0, sizeof(gsc));
gsc.info.tdport = tdport;
err = val->getter(ctx, &gsc, priv);
if (err)
return err;
switch (val->type) {
case TEAMD_STATE_ITEM_TYPE_INT:
val_json_obj = json_integer(gsc.data.int_val);
break;
case TEAMD_STATE_ITEM_TYPE_STRING:
val_json_obj = json_string(gsc.data.str_val.ptr);
if (gsc.data.str_val.free)
free((void *) gsc.data.str_val.ptr);
break;
case TEAMD_STATE_ITEM_TYPE_BOOL:
val_json_obj = gsc.data.bool_val ? json_true() : json_false();
break;
case TEAMD_STATE_ITEM_TYPE_NODE:
TEAMD_BUG();
}
if (!val_json_obj)
return -ENOMEM;
ret = json_object_set_new(vg_json_obj, subpath_end, val_json_obj);
if (ret)
return -EINVAL;
return 0;
}
static int teamd_state_vals_dump(struct teamd_context *ctx,
json_t *root_json_obj)
{
struct teamd_state_val_item *item;
int err;
list_for_each_node_entry(item, &ctx->state_val_list, list) {
if (item->per_port) {
struct teamd_port *tdport;
teamd_for_each_tdport(tdport, ctx) {
err = teamd_state_val_dump(ctx, root_json_obj,
tdport, item);
if (err)
return err;
}
} else {
err = teamd_state_val_dump(ctx, root_json_obj,
item->tdport, item);
if (err)
return err;
}
}
return 0;
}
static int __find_by_item_path(struct teamd_state_val_item **p_item,
struct teamd_port **p_tdport,
struct teamd_context *ctx, const char *item_path)
{
struct teamd_state_val_item *item;
char *subpath;
struct teamd_port *tdport = NULL;
if (!strncmp(item_path, TEAMD_STATE_PER_PORT_PREFIX,
strlen(TEAMD_STATE_PER_PORT_PREFIX))) {
char *ifname_start, *ifname_end;
struct teamd_port *cur_tdport;
size_t ifname_len;
ifname_start = strchr(item_path, '.') + 1;
if (*ifname_start == '\"') {
ifname_start++;
ifname_end = strrchr(ifname_start, '\"');
if (!ifname_end)
return -EINVAL;
ifname_len = ifname_end - ifname_start;
ifname_end++;
} else {
ifname_end = strchr(ifname_start, '.');
if (!ifname_end)
return -EINVAL;
ifname_len = ifname_end - ifname_start;
}
subpath = ifname_end + 1;
teamd_for_each_tdport(cur_tdport, ctx) {
if (!strncmp(cur_tdport->ifname, ifname_start,
ifname_len)) {
tdport = cur_tdport;
break;
}
}
if (!tdport)
return -ENOENT;
} else {
subpath = (char *) item_path;
}
list_for_each_node_entry(item, &ctx->state_val_list, list) {
/* item->subpath[0] == '.' */
if (!strcmp(item->subpath + 1, subpath) &&
(!item->per_port || tdport) &&
(!item->tdport || item->tdport == tdport)) {
*p_item = item;
*p_tdport = tdport;
return 0;
}
}
return -ENOENT;
}
int teamd_state_item_value_get(struct teamd_context *ctx, const char *item_path,
char **p_value)
{
struct teamd_state_val_item *item;
const struct teamd_state_val *val;
void *priv;
struct team_state_gsc gsc;
int err;
int ret = 0; /* gcc needs this initialized */
memset(&gsc, 0, sizeof(gsc));
err = __find_by_item_path(&item, &gsc.info.tdport, ctx, item_path);
if (err)
return err;
val = item->val;
priv = item->priv;
err = val->getter(ctx, &gsc, priv);
if (err)
return err;
switch (val->type) {
case TEAMD_STATE_ITEM_TYPE_INT:
ret = asprintf(p_value, "%d", gsc.data.int_val);
break;
case TEAMD_STATE_ITEM_TYPE_STRING:
ret = asprintf(p_value, "%s", gsc.data.str_val.ptr);
if (gsc.data.str_val.free)
free((void *) gsc.data.str_val.ptr);
break;
case TEAMD_STATE_ITEM_TYPE_BOOL:
ret = asprintf(p_value, "%s",
gsc.data.bool_val ? "true" : "false");
break;
case TEAMD_STATE_ITEM_TYPE_NODE:
TEAMD_BUG();
}
if (ret == -1)
return -ENOMEM;
return 0;
}
int __set_int_val(struct team_state_gsc *gsc, const char *value)
{
long val;
char *endptr;
errno = 0;
val = strtol(value, &endptr, 10);
if (errno)
return -errno;
if (strlen(endptr) != 0)
return -EINVAL;
if (val < INT_MIN || val > INT_MAX)
return -ERANGE;
gsc->data.int_val = val;
return 0;
}
int __set_bool_val(struct team_state_gsc *gsc, const char *value)
{
if (!strcasecmp("true", value))
gsc->data.bool_val = true;
else if (!strcasecmp("false", value))
gsc->data.bool_val = false;
else
return -EINVAL;
return 0;
}
int teamd_state_item_value_set(struct teamd_context *ctx, const char *item_path,
const char *value)
{
struct teamd_state_val_item *item;
const struct teamd_state_val *val;
void *priv;
struct team_state_gsc gsc;
int err;
err = __find_by_item_path(&item, &gsc.info.tdport, ctx, item_path);
if (err)
return err;
val = item->val;
priv = item->priv;
if (!val->setter)
return -EOPNOTSUPP;
switch (val->type) {
case TEAMD_STATE_ITEM_TYPE_INT:
err = __set_int_val(&gsc, value);
if (err)
return err;
break;
case TEAMD_STATE_ITEM_TYPE_STRING:
gsc.data.str_val.ptr = value;
break;
case TEAMD_STATE_ITEM_TYPE_BOOL:
err = __set_bool_val(&gsc, value);
if (err)
return err;
break;
case TEAMD_STATE_ITEM_TYPE_NODE:
TEAMD_BUG();
}
return val->setter(ctx, &gsc, priv);
}
int teamd_state_init(struct teamd_context *ctx)
{
list_init(&ctx->state_val_list);
return 0;
}
void teamd_state_fini(struct teamd_context *ctx)
{
}
int teamd_state_dump(struct teamd_context *ctx, char **p_state_dump)
{
json_t *state_json;
char *dump;
int err;
state_json = json_object();
if (!state_json)
return -ENOMEM;
err = teamd_state_vals_dump(ctx, state_json);
if (err)
goto errout;
dump = json_dumps(state_json, TEAMD_JSON_DUMPS_FLAGS);
json_decref(state_json);
if (!dump)
return -ENOMEM;
*p_state_dump = dump;
return 0;
errout:
json_decref(state_json);
return err;
}
/*
* state basics
*/
static struct team_ifinfo *__get_ifinfo(struct teamd_context *ctx,
struct team_state_gsc *gsc)
{
if (gsc->info.tdport)
return gsc->info.tdport->team_ifinfo;
else
return team_get_ifinfo(ctx->th);
}
static int ifinfo_state_ifindex_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.int_val = team_get_ifinfo_ifindex(__get_ifinfo(ctx, gsc));
return 0;
}
static int ifinfo_state_ifname_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.str_val.ptr = team_get_ifinfo_ifname(__get_ifinfo(ctx, gsc));
return 0;
}
static int ifinfo_state_dev_addr_len_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.int_val = team_get_ifinfo_hwaddr_len(__get_ifinfo(ctx, gsc));
return 0;
}
static int ifinfo_state_dev_addr_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
struct team_ifinfo *ifinfo = __get_ifinfo(ctx, gsc);
char *addr_str;
addr_str = a_hwaddr_str(team_get_ifinfo_hwaddr(ifinfo),
team_get_ifinfo_hwaddr_len(ifinfo));
if (!addr_str)
return -ENOMEM;
gsc->data.str_val.ptr = addr_str;
gsc->data.str_val.free = true;
return 0;
}
static const struct teamd_state_val ifinfo_state_vals[] = {
{
.subpath = "ifindex",
.type = TEAMD_STATE_ITEM_TYPE_INT,
.getter = ifinfo_state_ifindex_get,
},
{
.subpath = "ifname",
.type = TEAMD_STATE_ITEM_TYPE_STRING,
.getter = ifinfo_state_ifname_get,
},
{
.subpath = "dev_addr",
.type = TEAMD_STATE_ITEM_TYPE_STRING,
.getter = ifinfo_state_dev_addr_get,
},
{
.subpath = "dev_addr_len",
.type = TEAMD_STATE_ITEM_TYPE_INT,
.getter = ifinfo_state_dev_addr_len_get,
},
};
static int port_link_state_up_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.bool_val = team_is_port_link_up(gsc->info.tdport->team_port);
return 0;
}
static int port_link_state_speed_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.int_val = team_get_port_speed(gsc->info.tdport->team_port);
return 0;
}
static int port_link_state_duplex_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.str_val.ptr =
team_get_port_duplex(gsc->info.tdport->team_port) ? "full" : "half";
return 0;
}
static const struct teamd_state_val port_link_state_vals[] = {
{
.subpath = "up",
.type = TEAMD_STATE_ITEM_TYPE_BOOL,
.getter = port_link_state_up_get,
},
{
.subpath = "speed",
.type = TEAMD_STATE_ITEM_TYPE_INT,
.getter = port_link_state_speed_get,
},
{
.subpath = "duplex",
.type = TEAMD_STATE_ITEM_TYPE_STRING,
.getter = port_link_state_duplex_get,
},
};
static int setup_state_runner_name_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.str_val.ptr = ctx->runner->name;
return 0;
}
static int setup_state_kernel_team_mode_name_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.str_val.ptr = ctx->runner->team_mode_name;
return 0;
}
static int setup_state_dbus_enabled_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
#ifdef ENABLE_DBUS
gsc->data.bool_val = ctx->dbus.enabled;
#else
gsc->data.bool_val = false;
#endif
return 0;
}
static int setup_state_zmq_enabled_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
#ifdef ENABLE_ZMQ
gsc->data.bool_val = ctx->zmq.enabled;
#else
gsc->data.bool_val = false;
#endif
return 0;
}
static int setup_state_debug_level_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.int_val = ctx->debug;
return 0;
}
static int setup_state_debug_level_set(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
if (gsc->data.int_val < 0)
return -EINVAL;
return teamd_change_debug_level(ctx, gsc->data.int_val);
}
static int setup_state_daemonized_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.bool_val = ctx->daemonize;
return 0;
}
static int setup_state_pid_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.int_val = getpid();
return 0;
}
static int setup_state_pid_file_get(struct teamd_context *ctx,
struct team_state_gsc *gsc,
void *priv)
{
gsc->data.str_val.ptr = ctx->pid_file ? ctx->pid_file : "";
return 0;
}
static const struct teamd_state_val setup_state_vals[] = {
{
.subpath = "runner_name",
.type = TEAMD_STATE_ITEM_TYPE_STRING,
.getter = setup_state_runner_name_get,
},
{
.subpath = "kernel_team_mode_name",
.type = TEAMD_STATE_ITEM_TYPE_STRING,
.getter = setup_state_kernel_team_mode_name_get,
},
{
.subpath = "dbus_enabled",
.type = TEAMD_STATE_ITEM_TYPE_BOOL,
.getter = setup_state_dbus_enabled_get,
},
{
.subpath = "zmq_enabled",
.type = TEAMD_STATE_ITEM_TYPE_BOOL,
.getter = setup_state_zmq_enabled_get,
},
{
.subpath = "debug_level",
.type = TEAMD_STATE_ITEM_TYPE_INT,
.getter = setup_state_debug_level_get,
.setter = setup_state_debug_level_set,
},
{
.subpath = "daemonized",
.type = TEAMD_STATE_ITEM_TYPE_BOOL,
.getter = setup_state_daemonized_get,
},
{
.subpath = "pid",
.type = TEAMD_STATE_ITEM_TYPE_INT,
.getter = setup_state_pid_get,
},
{
.subpath = "pid_file",
.type = TEAMD_STATE_ITEM_TYPE_STRING,
.getter = setup_state_pid_file_get,
},
};
static const struct teamd_state_val state_vgs[] = {
{
.subpath = "team_device.ifinfo",
.vals = ifinfo_state_vals,
.vals_count = ARRAY_SIZE(ifinfo_state_vals),
},
{
.subpath = "ifinfo",
.vals = ifinfo_state_vals,
.vals_count = ARRAY_SIZE(ifinfo_state_vals),
.per_port = true,
},
{
.subpath = "link",
.vals = port_link_state_vals,
.vals_count = ARRAY_SIZE(port_link_state_vals),
.per_port = true,
},
{
.subpath = "setup",
.vals = setup_state_vals,
.vals_count = ARRAY_SIZE(setup_state_vals),
},
};
static const struct teamd_state_val root_state_vg = {
.vals = state_vgs,
.vals_count = ARRAY_SIZE(state_vgs),
};
int teamd_state_basics_init(struct teamd_context *ctx)
{
int err;
err = teamd_state_val_register(ctx, &root_state_vg, ctx);
if (err)
return err;
return 0;
}
void teamd_state_basics_fini(struct teamd_context *ctx)
{
teamd_state_val_unregister(ctx, &root_state_vg, ctx);
}