pespin has uploaded this change for review.
Move several objects outside of main.c
This makes it far more easy to understand the data model and find stuff
in code.
Change-Id: I4613361dc40518edd94f2d4128ba412337690736
---
M daemon/Makefile.am
A daemon/cups_client.c
A daemon/gtp_daemon.c
M daemon/internal.h
M daemon/main.c
5 files changed, 726 insertions(+), 659 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-uecups refs/changes/47/27747/1
diff --git a/daemon/Makefile.am b/daemon/Makefile.am
index 7d41766..2d62f11 100644
--- a/daemon/Makefile.am
+++ b/daemon/Makefile.am
@@ -36,10 +36,12 @@
$(NULL)
osmo_uecups_daemon_SOURCES = \
+ cups_client.c \
utility.c \
netdev.c \
netns.c \
tun_device.c \
+ gtp_daemon.c \
gtp_endpoint.c \
gtp_tunnel.c \
daemon_vty.c \
diff --git a/daemon/cups_client.c b/daemon/cups_client.c
new file mode 100644
index 0000000..8b136ec
--- /dev/null
+++ b/daemon/cups_client.c
@@ -0,0 +1,612 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <unistd.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+
+#include <osmocom/core/linuxlist.h>
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/logging.h>
+#include <osmocom/core/exec.h>
+
+#include "internal.h"
+
+#include <netinet/sctp.h>
+
+/***********************************************************************
+ * Client (Contol/User Plane Separation) Socket
+ ***********************************************************************/
+
+#define CUPS_MSGB_SIZE 1024
+
+#define LOGCC(cc, lvl, fmt, args ...) \
+ LOGP(DUECUPS, lvl, "%s: " fmt, (cc)->sockname, ## args)
+
+struct subprocess {
+ /* member in daemon->cups_clients */
+ struct llist_head list;
+ /* pointer to the client that started us */
+ struct cups_client *cups_client;
+ /* PID of the process */
+ pid_t pid;
+};
+
+static json_t *gen_uecups_term_ind(pid_t pid, int status);
+
+/* kill the specified subprocess and forget about it */
+static void subprocess_destroy(struct subprocess *p, int signal)
+{
+ LOGCC(p->cups_client, LOGL_DEBUG, "Kill subprocess pid %llu with signal %u\n",
+ (unsigned long long)p->pid, signal);
+ kill(p->pid, signal);
+ llist_del(&p->list);
+ talloc_free(p);
+}
+
+static struct subprocess *subprocess_by_pid(struct gtp_daemon *d, pid_t pid)
+{
+ struct subprocess *sproc;
+ llist_for_each_entry(sproc, &d->subprocesses, list) {
+ if (sproc->pid == pid)
+ return sproc;
+ }
+ return NULL;
+}
+
+void child_terminated(struct gtp_daemon *d, int pid, int status)
+{
+ struct subprocess *sproc;
+ json_t *jterm_ind;
+
+ LOGP(DUECUPS, LOGL_DEBUG, "SIGCHLD receive from pid %u; status=%d\n", pid, status);
+
+ sproc = subprocess_by_pid(d, pid);
+ if (!sproc) {
+ LOGP(DUECUPS, LOGL_NOTICE, "subprocess %u terminated (status=%d) but we don't know it?\n",
+ pid, status);
+ return;
+ }
+
+ /* generate prog_term_ind towards control plane */
+ jterm_ind = gen_uecups_term_ind(pid, status);
+ if (!jterm_ind)
+ return;
+
+ cups_client_tx_json(sproc->cups_client, jterm_ind);
+
+ llist_del(&sproc->list);
+ talloc_free(sproc);
+}
+
+/* Send JSON to a given client/connection */
+int cups_client_tx_json(struct cups_client *cc, json_t *jtx)
+{
+ struct msgb *msg = msgb_alloc(CUPS_MSGB_SIZE, "Tx JSON");
+ char *json_str = json_dumps(jtx, JSON_SORT_KEYS);
+ char *out;
+ int json_strlen;
+
+ json_decref(jtx);
+ if (!json_str) {
+ LOGCC(cc, LOGL_ERROR, "Error encoding JSON\n");
+ return 0;
+ }
+ json_strlen = strlen(json_str);
+
+ LOGCC(cc, LOGL_DEBUG, "JSON Tx '%s'\n", json_str);
+
+ if (json_strlen > msgb_tailroom(msg)) {
+ LOGCC(cc, LOGL_ERROR, "Not enough room for JSON in msgb\n");
+ free(json_str);
+ return 0;
+ }
+
+ out = (char *)msgb_put(msg, json_strlen);
+ memcpy(out, json_str, json_strlen);
+ free(json_str);
+ osmo_stream_srv_send(cc->srv, msg);
+
+ return 0;
+}
+
+json_t *gen_uecups_result(const char *name, const char *res)
+{
+ json_t *jres = json_object();
+ json_t *jret = json_object();
+
+ json_object_set_new(jres, "result", json_string(res));
+ json_object_set_new(jret, name, jres);
+
+ return jret;
+}
+
+static int parse_ep(struct sockaddr_storage *out, json_t *in)
+{
+ json_t *jaddr_type, *jport, *jip;
+ const char *addr_type, *ip;
+ uint8_t buf[16];
+
+ /* {"addr_type":"IPV4","ip":"31323334","Port":2152} */
+
+ if (!json_is_object(in))
+ return -EINVAL;
+
+ jaddr_type = json_object_get(in, "addr_type");
+ jport = json_object_get(in, "Port");
+ jip = json_object_get(in, "ip");
+
+ if (!jaddr_type || !jport || !jip)
+ return -EINVAL;
+
+ if (!json_is_string(jaddr_type) || !json_is_integer(jport) || !json_is_string(jip))
+ return -EINVAL;
+
+ addr_type = json_string_value(jaddr_type);
+ ip = json_string_value(jip);
+
+ memset(out, 0, sizeof(*out));
+
+ if (!strcmp(addr_type, "IPV4")) {
+ struct sockaddr_in *sin = (struct sockaddr_in *) out;
+ if (osmo_hexparse(ip, buf, sizeof(buf)) != 4)
+ return -EINVAL;
+ memcpy(&sin->sin_addr, buf, 4);
+ sin->sin_family = AF_INET;
+ sin->sin_port = htons(json_integer_value(jport));
+ } else if (!strcmp(addr_type, "IPV6")) {
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) out;
+ if (osmo_hexparse(ip, buf, sizeof(buf)) != 16)
+ return -EINVAL;
+ memcpy(&sin6->sin6_addr, buf, 16);
+ sin6->sin6_family = AF_INET6;
+ sin6->sin6_port = htons(json_integer_value(jport));
+ } else
+ return -EINVAL;
+
+ return 0;
+}
+
+static int parse_eua(struct sockaddr_storage *out, json_t *jip, json_t *jaddr_type)
+{
+ const char *addr_type, *ip;
+ uint8_t buf[16];
+
+ if (!json_is_string(jip) || !json_is_string(jaddr_type))
+ return -EINVAL;
+
+ addr_type = json_string_value(jaddr_type);
+ ip = json_string_value(jip);
+
+ memset(out, 0, sizeof(*out));
+
+ if (!strcmp(addr_type, "IPV4")) {
+ struct sockaddr_in *sin = (struct sockaddr_in *) out;
+ if (osmo_hexparse(ip, buf, sizeof(buf)) != 4)
+ return -EINVAL;
+ memcpy(&sin->sin_addr, buf, 4);
+ sin->sin_family = AF_INET;
+ } else if (!strcmp(addr_type, "IPV6")) {
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) out;
+ if (osmo_hexparse(ip, buf, sizeof(buf)) != 16)
+ return -EINVAL;
+ memcpy(&sin6->sin6_addr, buf, 16);
+ sin6->sin6_family = AF_INET6;
+ } else
+ return -EINVAL;
+
+ return 0;
+}
+
+
+static int parse_create_tun(struct gtp_tunnel_params *out, json_t *ctun)
+{
+ json_t *jlocal_gtp_ep, *jremote_gtp_ep;
+ json_t *jrx_teid, *jtx_teid;
+ json_t *jtun_dev_name, *jtun_netns_name;
+ json_t *juser_addr, *juser_addr_type;
+ int rc;
+
+ /* '{"create_tun":{"tx_teid":1234,"rx_teid":5678,"user_addr_type":"IPV4","user_addr":"21222324","local_gtp_ep":{"addr_type":"IPV4","ip":"31323334","Port":2152},"remote_gtp_ep":{"addr_type":"IPV4","ip":"41424344","Port":2152},"tun_dev_name":"tun23","tun_netns_name":"foo"}}' */
+
+ if (!json_is_object(ctun))
+ return -EINVAL;
+
+ /* mandatory IEs */
+ jlocal_gtp_ep = json_object_get(ctun, "local_gtp_ep");
+ jremote_gtp_ep = json_object_get(ctun, "remote_gtp_ep");
+ jrx_teid = json_object_get(ctun, "rx_teid");
+ jtx_teid = json_object_get(ctun, "tx_teid");
+ jtun_dev_name = json_object_get(ctun, "tun_dev_name");
+ juser_addr = json_object_get(ctun, "user_addr");
+ juser_addr_type = json_object_get(ctun, "user_addr_type");
+
+ if (!jlocal_gtp_ep || !jremote_gtp_ep || !jrx_teid || !jtx_teid || !jtun_dev_name ||
+ !juser_addr || !juser_addr_type)
+ return -EINVAL;
+ if (!json_is_object(jlocal_gtp_ep) || !json_is_object(jremote_gtp_ep) ||
+ !json_is_integer(jrx_teid) || !json_is_integer(jtx_teid) ||
+ !json_is_string(jtun_dev_name) ||
+ !json_is_string(juser_addr) || !json_is_string(juser_addr_type))
+ return -EINVAL;
+
+ memset(out, 0, sizeof(*out));
+
+ rc = parse_ep(&out->local_udp, jlocal_gtp_ep);
+ if (rc < 0)
+ return rc;
+ rc = parse_ep(&out->remote_udp, jremote_gtp_ep);
+ if (rc < 0)
+ return rc;
+ rc = parse_eua(&out->user_addr, juser_addr, juser_addr_type);
+ if (rc < 0)
+ return rc;
+ out->rx_teid = json_integer_value(jrx_teid);
+ out->tx_teid = json_integer_value(jtx_teid);
+ out->tun_name = talloc_strdup(out, json_string_value(jtun_dev_name));
+
+ /* optional IEs */
+ jtun_netns_name = json_object_get(ctun, "tun_netns_name");
+ if (jtun_netns_name) {
+ if (!json_is_string(jtun_netns_name))
+ return -EINVAL;
+ out->tun_netns_name = talloc_strdup(out, json_string_value(jtun_netns_name));
+ }
+
+ return 0;
+}
+
+
+static int cups_client_handle_create_tun(struct cups_client *cc, json_t *ctun)
+{
+ int rc;
+ struct gtp_tunnel_params *tpars = talloc_zero(cc, struct gtp_tunnel_params);
+ struct gtp_tunnel *t;
+
+ rc = parse_create_tun(tpars, ctun);
+ if (rc < 0) {
+ talloc_free(tpars);
+ return rc;
+ }
+
+ t = gtp_tunnel_alloc(g_daemon, tpars);
+ if (!t) {
+ LOGCC(cc, LOGL_NOTICE, "Failed to allocate tunnel\n");
+ cups_client_tx_json(cc, gen_uecups_result("create_tun_res", "ERR_NOT_FOUND"));
+ } else {
+ cups_client_tx_json(cc, gen_uecups_result("create_tun_res", "OK"));
+ }
+
+ talloc_free(tpars);
+ return 0;
+}
+
+static int cups_client_handle_destroy_tun(struct cups_client *cc, json_t *dtun)
+{
+ struct sockaddr_storage local_ep_addr;
+ json_t *jlocal_gtp_ep, *jrx_teid;
+ uint32_t rx_teid;
+ int rc;
+
+ jlocal_gtp_ep = json_object_get(dtun, "local_gtp_ep");
+ jrx_teid = json_object_get(dtun, "rx_teid");
+
+ if (!jlocal_gtp_ep || !jrx_teid)
+ return -EINVAL;
+
+ if (!json_is_object(jlocal_gtp_ep) || !json_is_integer(jrx_teid))
+ return -EINVAL;
+
+ rc = parse_ep(&local_ep_addr, jlocal_gtp_ep);
+ if (rc < 0)
+ return rc;
+ rx_teid = json_integer_value(jrx_teid);
+
+ rc = gtp_tunnel_destroy(g_daemon, &local_ep_addr, rx_teid);
+ if (rc < 0) {
+ LOGCC(cc, LOGL_NOTICE, "Failed to destroy tunnel\n");
+ cups_client_tx_json(cc, gen_uecups_result("destroy_tun_res", "ERR_NOT_FOUND"));
+ } else {
+ cups_client_tx_json(cc, gen_uecups_result("destroy_tun_res", "OK"));
+ }
+
+ return 0;
+}
+
+static json_t *gen_uecups_term_ind(pid_t pid, int status)
+{
+ json_t *jterm = json_object();
+ json_t *jret = json_object();
+
+ json_object_set_new(jterm, "pid", json_integer(pid));
+ json_object_set_new(jterm, "exit_code", json_integer(status));
+
+ json_object_set_new(jret, "program_term_ind", jterm);
+
+ return jret;
+}
+
+static json_t *gen_uecups_start_res(pid_t pid, const char *result)
+{
+ json_t *ret = gen_uecups_result("start_program_res", result);
+ json_object_set_new(json_object_get(ret, "start_program_res"), "pid", json_integer(pid));
+
+ return ret;
+}
+
+static int cups_client_handle_start_program(struct cups_client *cc, json_t *sprog)
+{
+ json_t *juser, *jcmd, *jenv, *jnetns, *jres;
+ struct gtp_daemon *d = cc->d;
+ const char *cmd, *user;
+ char **addl_env = NULL;
+ sigset_t oldmask;
+ int nsfd = -1, rc;
+
+ juser = json_object_get(sprog, "run_as_user");
+ jcmd = json_object_get(sprog, "command");
+ jenv = json_object_get(sprog, "environment");
+ jnetns = json_object_get(sprog, "tun_netns_name");
+
+ /* mandatory parts */
+ if (!juser || !jcmd)
+ return -EINVAL;
+ if (!json_is_string(juser) || !json_is_string(jcmd))
+ return -EINVAL;
+
+ /* optional parts */
+ if (jenv && !json_is_array(jenv))
+ return -EINVAL;
+ if (jnetns && !json_is_string(jnetns))
+ return -EINVAL;
+
+ cmd = json_string_value(jcmd);
+ user = json_string_value(juser);
+ if (jnetns) {
+ struct tun_device *tun = tun_device_find_netns(d, json_string_value(jnetns));
+ if (!tun)
+ return -ENODEV;
+ nsfd = tun->netns_fd;
+ }
+
+ /* build environment */
+ if (jenv) {
+ json_t *j;
+ int i;
+ addl_env = talloc_zero_array(cc, char *, json_array_size(jenv)+1);
+ if (!addl_env)
+ return -ENOMEM;
+ json_array_foreach(jenv, i, j) {
+ addl_env[i] = talloc_strdup(addl_env, json_string_value(j));
+ }
+ }
+
+ if (jnetns) {
+ rc = switch_ns(nsfd, &oldmask);
+ if (rc < 0) {
+ talloc_free(addl_env);
+ return -EIO;
+ }
+ }
+
+ rc = osmo_system_nowait2(cmd, osmo_environment_whitelist, addl_env, user);
+
+ if (jnetns) {
+ OSMO_ASSERT(restore_ns(&oldmask) == 0);
+ }
+
+ talloc_free(addl_env);
+
+ if (rc > 0) {
+ /* create a record about the subprocess we started, so we can notify the
+ * client that crated it upon termination */
+ struct subprocess *sproc = talloc_zero(cc, struct subprocess);
+ if (!sproc)
+ return -ENOMEM;
+
+ sproc->cups_client = cc;
+ sproc->pid = rc;
+ llist_add_tail(&sproc->list, &d->subprocesses);
+ jres = gen_uecups_start_res(sproc->pid, "OK");
+ } else {
+ jres = gen_uecups_start_res(0, "ERR_INVALID_DATA");
+ }
+
+ cups_client_tx_json(cc, jres);
+
+ return 0;
+}
+
+static int cups_client_handle_reset_all_state(struct cups_client *cc, json_t *sprog)
+{
+ struct gtp_daemon *d = cc->d;
+ struct gtp_tunnel *t, *t2;
+ struct subprocess *p, *p2;
+ json_t *jres;
+
+ LOGCC(cc, LOGL_DEBUG, "Destroying all tunnels\n");
+ pthread_rwlock_wrlock(&d->rwlock);
+ llist_for_each_entry_safe(t, t2, &d->gtp_tunnels, list) {
+ _gtp_tunnel_destroy(t);
+ }
+ pthread_rwlock_unlock(&d->rwlock);
+
+ /* no locking needed as this list is only used by main thread */
+ LOGCC(cc, LOGL_DEBUG, "Destroying all subprocesses\n");
+ llist_for_each_entry_safe(p, p2, &d->subprocesses, list) {
+ subprocess_destroy(p, SIGKILL);
+ }
+
+ if (d->reset_all_state_tun_remaining == 0) {
+ jres = gen_uecups_result("reset_all_state_res", "OK");
+ cups_client_tx_json(cc, jres);
+ } else {
+ cc->reset_all_state_res_pending = true;
+ }
+
+ return 0;
+}
+
+static int cups_client_handle_json(struct cups_client *cc, json_t *jroot)
+{
+ void *iter;
+ const char *key;
+ json_t *cmd;
+ int rc;
+
+ if (!json_is_object(jroot))
+ return -EINVAL;
+
+ iter = json_object_iter(jroot);
+ key = json_object_iter_key(iter);
+ cmd = json_object_iter_value(iter);
+ if (!iter || !key || !cmd)
+ return -EINVAL;
+
+ if (!strcmp(key, "create_tun")) {
+ rc = cups_client_handle_create_tun(cc, cmd);
+ } else if (!strcmp(key, "destroy_tun")) {
+ rc = cups_client_handle_destroy_tun(cc, cmd);
+ } else if (!strcmp(key, "start_program")) {
+ rc = cups_client_handle_start_program(cc, cmd);
+ } else if (!strcmp(key, "reset_all_state")) {
+ rc = cups_client_handle_reset_all_state(cc, cmd);
+ } else {
+ LOGCC(cc, LOGL_NOTICE, "Unknown command '%s' received\n", key);
+ return -EINVAL;
+ }
+
+ if (rc < 0) {
+ LOGCC(cc, LOGL_NOTICE, "Error %d handling '%s' command\n", rc, key);
+ char buf[64];
+ snprintf(buf, sizeof(buf), "%s_res", key);
+ cups_client_tx_json(cc, gen_uecups_result(buf, "ERR_INVALID_DATA"));
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* control/user plane separation per-client read cb */
+static int cups_client_read_cb(struct osmo_stream_srv *conn)
+{
+ struct osmo_fd *ofd = osmo_stream_srv_get_ofd(conn);
+ struct cups_client *cc = osmo_stream_srv_get_data(conn);
+ struct msgb *msg = msgb_alloc(CUPS_MSGB_SIZE, "Rx JSON");
+ struct sctp_sndrcvinfo sinfo;
+ json_error_t jerr;
+ json_t *jroot;
+ int flags = 0;
+ int rc = 0;
+
+ /* Read message from socket */
+ /* we cannot use osmo_stream_srv_recv() here, as we might get some out-of-band info from
+ * SCTP. FIXME: add something like osmo_stream_srv_recv_sctp() to libosmo-netif and use
+ * it here as well as in libosmo-sigtran and osmo-msc */
+ rc = sctp_recvmsg(ofd->fd, msg->tail, msgb_tailroom(msg), NULL, NULL, &sinfo,&flags);
+ if (rc <= 0) {
+ osmo_stream_srv_destroy(conn);
+ rc = -1;
+ goto out;
+ } else
+ msgb_put(msg, rc);
+
+ if (flags & MSG_NOTIFICATION) {
+ union sctp_notification *notif = (union sctp_notification *) msgb_data(msg);
+ switch (notif->sn_header.sn_type) {
+ case SCTP_SHUTDOWN_EVENT:
+ osmo_stream_srv_destroy(conn);
+ rc = -EBADF;
+ goto out;
+ default:
+ break;
+ }
+ goto out;
+ }
+
+ LOGCC(cc, LOGL_DEBUG, "Rx '%s'\n", msgb_data(msg));
+
+ /* Parse the JSON */
+ jroot = json_loadb((const char *) msgb_data(msg), msgb_length(msg), 0, &jerr);
+ if (!jroot) {
+ LOGCC(cc, LOGL_ERROR, "Error decoding JSON (%s)", jerr.text);
+ rc = -1;
+ goto out;
+ }
+
+ /* Dispatch */
+ rc = cups_client_handle_json(cc, jroot);
+
+ json_decref(jroot);
+ msgb_free(msg);
+
+ return 0;
+out:
+ msgb_free(msg);
+ return rc;
+}
+
+static int cups_client_closed_cb(struct osmo_stream_srv *conn)
+{
+ struct cups_client *cc = osmo_stream_srv_get_data(conn);
+ struct gtp_daemon *d = cc->d;
+ struct subprocess *p, *p2;
+
+ /* kill + forget about all subprocesses of this client */
+ /* We need no locking here as the subprocess list is only used from the main thread */
+ llist_for_each_entry_safe(p, p2, &d->subprocesses, list) {
+ if (p->cups_client == cc)
+ subprocess_destroy(p, SIGKILL);
+ }
+
+ LOGCC(cc, LOGL_INFO, "UECUPS connection lost\n");
+ llist_del(&cc->list);
+ return 0;
+}
+
+
+/* the control/user plane separation server bind/accept fd */
+static int cups_accept_cb(struct osmo_stream_srv_link *link, int fd)
+{
+ struct gtp_daemon *d = osmo_stream_srv_link_get_data(link);
+ struct cups_client *cc;
+
+ cc = talloc_zero(d, struct cups_client);
+ if (!cc)
+ return -1;
+
+ cc->d = d;
+ osmo_sock_get_name_buf(cc->sockname, sizeof(cc->sockname), fd);
+ cc->srv = osmo_stream_srv_create(cc, link, fd, cups_client_read_cb, cups_client_closed_cb, cc);
+ if (!cc->srv) {
+ talloc_free(cc);
+ return -1;
+ }
+ LOGCC(cc, LOGL_INFO, "Accepted new UECUPS connection\n");
+
+ llist_add_tail(&cc->list, &d->cups_clients);
+
+ return 0;
+}
+
+struct osmo_stream_srv_link *cups_srv_link_create(struct gtp_daemon *d)
+{
+ struct osmo_stream_srv_link *srv_link;
+ srv_link = osmo_stream_srv_link_create(g_daemon);
+ if (!srv_link)
+ return NULL;
+
+ /* UECUPS socket for control from control plane side */
+ osmo_stream_srv_link_set_nodelay(srv_link, true);
+ osmo_stream_srv_link_set_addr(srv_link, g_daemon->cfg.cups_local_ip);
+ osmo_stream_srv_link_set_port(srv_link, g_daemon->cfg.cups_local_port);
+ osmo_stream_srv_link_set_proto(srv_link, IPPROTO_SCTP);
+ osmo_stream_srv_link_set_data(srv_link, g_daemon);
+ osmo_stream_srv_link_set_accept_cb(srv_link, cups_accept_cb);
+ osmo_stream_srv_link_open(srv_link);
+ return srv_link;
+}
diff --git a/daemon/gtp_daemon.c b/daemon/gtp_daemon.c
new file mode 100644
index 0000000..b5b7ac8
--- /dev/null
+++ b/daemon/gtp_daemon.c
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <unistd.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <errno.h>
+
+#include <pthread.h>
+
+#include <osmocom/core/linuxlist.h>
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/logging.h>
+
+#include "internal.h"
+
+
+/***********************************************************************
+ * GTP Daemon
+ ***********************************************************************/
+
+#ifndef OSMO_VTY_PORT_UECUPS
+#define OSMO_VTY_PORT_UECUPS 4268
+#endif
+
+struct gtp_daemon *g_daemon;
+
+static void gtp_daemon_itq_read_cb(struct osmo_it_q *q, struct llist_head *item)
+{
+ struct gtp_daemon *d = (struct gtp_daemon *)q->data;
+ struct gtp_daemon_itq_msg *itq_msg = container_of(item, struct gtp_daemon_itq_msg, list);
+
+ LOGP(DTUN, LOGL_DEBUG, "Rx new itq message from %s\n",
+ itq_msg->tun_released.tun->devname);
+
+ _tun_device_destroy(itq_msg->tun_released.tun);
+ if (d->reset_all_state_tun_remaining > 0) {
+ d->reset_all_state_tun_remaining--;
+ if (d->reset_all_state_tun_remaining == 0) {
+ struct cups_client *cc;
+ llist_for_each_entry(cc, &d->cups_clients, list) {
+ json_t *jres;
+ if (!cc->reset_all_state_res_pending)
+ continue;
+ cc->reset_all_state_res_pending = false;
+ jres = gen_uecups_result("reset_all_state_res", "OK");
+ cups_client_tx_json(cc, jres);
+ }
+ }
+ }
+}
+
+struct gtp_daemon *gtp_daemon_alloc(void *ctx)
+{
+ struct gtp_daemon *d = talloc_zero(ctx, struct gtp_daemon);
+ if (!d)
+ return NULL;
+
+ INIT_LLIST_HEAD(&d->gtp_endpoints);
+ INIT_LLIST_HEAD(&d->tun_devices);
+ INIT_LLIST_HEAD(&d->gtp_tunnels);
+ INIT_LLIST_HEAD(&d->subprocesses);
+ pthread_rwlock_init(&d->rwlock, NULL);
+ d->main_thread = pthread_self();
+
+ d->itq = osmo_it_q_alloc(d, "itq", 4096, gtp_daemon_itq_read_cb, d);
+ osmo_fd_register(&d->itq->event_ofd);
+
+ INIT_LLIST_HEAD(&d->cups_clients);
+
+ d->cfg.cups_local_ip = talloc_strdup(d, "localhost");
+ d->cfg.cups_local_port = UECUPS_SCTP_PORT;
+
+ return d;
+}
diff --git a/daemon/internal.h b/daemon/internal.h
index fc5708d..a3ef40c 100644
--- a/daemon/internal.h
+++ b/daemon/internal.h
@@ -1,14 +1,22 @@
/* SPDX-License-Identifier: GPL-2.0 */
#pragma once
+#include "netns.h"
+
#include <stdint.h>
#include <stdbool.h>
#include <pthread.h>
#include <sys/socket.h>
+
+#include <jansson.h>
+
#include <osmocom/core/linuxlist.h>
#include <osmocom/core/write_queue.h>
#include <osmocom/core/it_q.h>
#include <osmocom/core/utils.h>
+#include <osmocom/core/socket.h>
+
+#include <osmocom/netif/stream.h>
struct nl_sock;
struct osmo_stream_srv_link;
@@ -140,6 +148,25 @@
bool tun_device_release(struct tun_device *tun);
+/***********************************************************************
+ * Client (Contol/User Plane Separation) Socket
+ ***********************************************************************/
+
+struct cups_client {
+ /* member in daemon->cups_clients */
+ struct llist_head list;
+ /* back-pointer to daemon */
+ struct gtp_daemon *d;
+ /* client socket */
+ struct osmo_stream_srv *srv;
+ char sockname[OSMO_SOCK_NAME_MAXLEN];
+ bool reset_all_state_res_pending;
+};
+
+struct osmo_stream_srv_link *cups_srv_link_create(struct gtp_daemon *d);
+void child_terminated(struct gtp_daemon *d, int pid, int status);
+json_t *gen_uecups_result(const char *name, const char *res);
+int cups_client_tx_json(struct cups_client *cc, json_t *jtx);
/***********************************************************************
* GTP Tunnel
@@ -247,4 +274,6 @@
};
extern struct gtp_daemon *g_daemon;
+struct gtp_daemon *gtp_daemon_alloc(void *ctx);
+
int gtpud_vty_init(void);
diff --git a/daemon/main.c b/daemon/main.c
index 14ba330..da194f5 100644
--- a/daemon/main.c
+++ b/daemon/main.c
@@ -24,7 +24,6 @@
#include <osmocom/core/stats.h>
#include <osmocom/core/rate_ctr.h>
#include <osmocom/core/socket.h>
-#include <osmocom/core/exec.h>
#include <osmocom/vty/telnet_interface.h>
#include <osmocom/vty/logging.h>
#include <osmocom/vty/stats.h>
@@ -33,7 +32,6 @@
#include <osmocom/vty/misc.h>
#include <osmocom/netif/stream.h>
-#include <netinet/sctp.h>
#include <jansson.h>
@@ -41,330 +39,13 @@
#include "netns.h"
#include "gtp.h"
-/***********************************************************************
- * Client (Contol/User Plane Separation) Socket
- ***********************************************************************/
+static void *g_tall_ctx;
+static char *g_config_file = "osmo-uecups-daemon.cfg";
+static int g_daemonize;
+extern struct vty_app_info g_vty_info;
#include <pwd.h>
-#define CUPS_MSGB_SIZE 1024
-
-#define LOGCC(cc, lvl, fmt, args ...) \
- LOGP(DUECUPS, lvl, "%s: " fmt, (cc)->sockname, ## args)
-
-struct cups_client {
- /* member in daemon->cups_clients */
- struct llist_head list;
- /* back-pointer to daemon */
- struct gtp_daemon *d;
- /* client socket */
- struct osmo_stream_srv *srv;
- char sockname[OSMO_SOCK_NAME_MAXLEN];
- bool reset_all_state_res_pending;
-};
-
-struct subprocess {
- /* member in daemon->cups_clients */
- struct llist_head list;
- /* pointer to the client that started us */
- struct cups_client *cups_client;
- /* PID of the process */
- pid_t pid;
-};
-
-/* kill the specified subprocess and forget about it */
-static void subprocess_destroy(struct subprocess *p, int signal)
-{
- LOGCC(p->cups_client, LOGL_DEBUG, "Kill subprocess pid %llu with signal %u\n",
- (unsigned long long)p->pid, signal);
- kill(p->pid, signal);
- llist_del(&p->list);
- talloc_free(p);
-}
-
-/* Send JSON to a given client/connection */
-static int cups_client_tx_json(struct cups_client *cc, json_t *jtx)
-{
- struct msgb *msg = msgb_alloc(CUPS_MSGB_SIZE, "Tx JSON");
- char *json_str = json_dumps(jtx, JSON_SORT_KEYS);
- char *out;
- int json_strlen;
-
- json_decref(jtx);
- if (!json_str) {
- LOGCC(cc, LOGL_ERROR, "Error encoding JSON\n");
- return 0;
- }
- json_strlen = strlen(json_str);
-
- LOGCC(cc, LOGL_DEBUG, "JSON Tx '%s'\n", json_str);
-
- if (json_strlen > msgb_tailroom(msg)) {
- LOGCC(cc, LOGL_ERROR, "Not enough room for JSON in msgb\n");
- free(json_str);
- return 0;
- }
-
- out = (char *)msgb_put(msg, json_strlen);
- memcpy(out, json_str, json_strlen);
- free(json_str);
- osmo_stream_srv_send(cc->srv, msg);
-
- return 0;
-}
-
-static json_t *gen_uecups_result(const char *name, const char *res)
-{
- json_t *jres = json_object();
- json_t *jret = json_object();
-
- json_object_set_new(jres, "result", json_string(res));
- json_object_set_new(jret, name, jres);
-
- return jret;
-}
-
-static int parse_ep(struct sockaddr_storage *out, json_t *in)
-{
- json_t *jaddr_type, *jport, *jip;
- const char *addr_type, *ip;
- uint8_t buf[16];
-
- /* {"addr_type":"IPV4","ip":"31323334","Port":2152} */
-
- if (!json_is_object(in))
- return -EINVAL;
-
- jaddr_type = json_object_get(in, "addr_type");
- jport = json_object_get(in, "Port");
- jip = json_object_get(in, "ip");
-
- if (!jaddr_type || !jport || !jip)
- return -EINVAL;
-
- if (!json_is_string(jaddr_type) || !json_is_integer(jport) || !json_is_string(jip))
- return -EINVAL;
-
- addr_type = json_string_value(jaddr_type);
- ip = json_string_value(jip);
-
- memset(out, 0, sizeof(*out));
-
- if (!strcmp(addr_type, "IPV4")) {
- struct sockaddr_in *sin = (struct sockaddr_in *) out;
- if (osmo_hexparse(ip, buf, sizeof(buf)) != 4)
- return -EINVAL;
- memcpy(&sin->sin_addr, buf, 4);
- sin->sin_family = AF_INET;
- sin->sin_port = htons(json_integer_value(jport));
- } else if (!strcmp(addr_type, "IPV6")) {
- struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) out;
- if (osmo_hexparse(ip, buf, sizeof(buf)) != 16)
- return -EINVAL;
- memcpy(&sin6->sin6_addr, buf, 16);
- sin6->sin6_family = AF_INET6;
- sin6->sin6_port = htons(json_integer_value(jport));
- } else
- return -EINVAL;
-
- return 0;
-}
-
-static int parse_eua(struct sockaddr_storage *out, json_t *jip, json_t *jaddr_type)
-{
- const char *addr_type, *ip;
- uint8_t buf[16];
-
- if (!json_is_string(jip) || !json_is_string(jaddr_type))
- return -EINVAL;
-
- addr_type = json_string_value(jaddr_type);
- ip = json_string_value(jip);
-
- memset(out, 0, sizeof(*out));
-
- if (!strcmp(addr_type, "IPV4")) {
- struct sockaddr_in *sin = (struct sockaddr_in *) out;
- if (osmo_hexparse(ip, buf, sizeof(buf)) != 4)
- return -EINVAL;
- memcpy(&sin->sin_addr, buf, 4);
- sin->sin_family = AF_INET;
- } else if (!strcmp(addr_type, "IPV6")) {
- struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) out;
- if (osmo_hexparse(ip, buf, sizeof(buf)) != 16)
- return -EINVAL;
- memcpy(&sin6->sin6_addr, buf, 16);
- sin6->sin6_family = AF_INET6;
- } else
- return -EINVAL;
-
- return 0;
-}
-
-
-static int parse_create_tun(struct gtp_tunnel_params *out, json_t *ctun)
-{
- json_t *jlocal_gtp_ep, *jremote_gtp_ep;
- json_t *jrx_teid, *jtx_teid;
- json_t *jtun_dev_name, *jtun_netns_name;
- json_t *juser_addr, *juser_addr_type;
- int rc;
-
- /* '{"create_tun":{"tx_teid":1234,"rx_teid":5678,"user_addr_type":"IPV4","user_addr":"21222324","local_gtp_ep":{"addr_type":"IPV4","ip":"31323334","Port":2152},"remote_gtp_ep":{"addr_type":"IPV4","ip":"41424344","Port":2152},"tun_dev_name":"tun23","tun_netns_name":"foo"}}' */
-
- if (!json_is_object(ctun))
- return -EINVAL;
-
- /* mandatory IEs */
- jlocal_gtp_ep = json_object_get(ctun, "local_gtp_ep");
- jremote_gtp_ep = json_object_get(ctun, "remote_gtp_ep");
- jrx_teid = json_object_get(ctun, "rx_teid");
- jtx_teid = json_object_get(ctun, "tx_teid");
- jtun_dev_name = json_object_get(ctun, "tun_dev_name");
- juser_addr = json_object_get(ctun, "user_addr");
- juser_addr_type = json_object_get(ctun, "user_addr_type");
-
- if (!jlocal_gtp_ep || !jremote_gtp_ep || !jrx_teid || !jtx_teid || !jtun_dev_name ||
- !juser_addr || !juser_addr_type)
- return -EINVAL;
- if (!json_is_object(jlocal_gtp_ep) || !json_is_object(jremote_gtp_ep) ||
- !json_is_integer(jrx_teid) || !json_is_integer(jtx_teid) ||
- !json_is_string(jtun_dev_name) ||
- !json_is_string(juser_addr) || !json_is_string(juser_addr_type))
- return -EINVAL;
-
- memset(out, 0, sizeof(*out));
-
- rc = parse_ep(&out->local_udp, jlocal_gtp_ep);
- if (rc < 0)
- return rc;
- rc = parse_ep(&out->remote_udp, jremote_gtp_ep);
- if (rc < 0)
- return rc;
- rc = parse_eua(&out->user_addr, juser_addr, juser_addr_type);
- if (rc < 0)
- return rc;
- out->rx_teid = json_integer_value(jrx_teid);
- out->tx_teid = json_integer_value(jtx_teid);
- out->tun_name = talloc_strdup(out, json_string_value(jtun_dev_name));
-
- /* optional IEs */
- jtun_netns_name = json_object_get(ctun, "tun_netns_name");
- if (jtun_netns_name) {
- if (!json_is_string(jtun_netns_name))
- return -EINVAL;
- out->tun_netns_name = talloc_strdup(out, json_string_value(jtun_netns_name));
- }
-
- return 0;
-}
-
-
-static int cups_client_handle_create_tun(struct cups_client *cc, json_t *ctun)
-{
- int rc;
- struct gtp_tunnel_params *tpars = talloc_zero(cc, struct gtp_tunnel_params);
- struct gtp_tunnel *t;
-
- rc = parse_create_tun(tpars, ctun);
- if (rc < 0) {
- talloc_free(tpars);
- return rc;
- }
-
- t = gtp_tunnel_alloc(g_daemon, tpars);
- if (!t) {
- LOGCC(cc, LOGL_NOTICE, "Failed to allocate tunnel\n");
- cups_client_tx_json(cc, gen_uecups_result("create_tun_res", "ERR_NOT_FOUND"));
- } else {
- cups_client_tx_json(cc, gen_uecups_result("create_tun_res", "OK"));
- }
-
- talloc_free(tpars);
- return 0;
-}
-
-static int cups_client_handle_destroy_tun(struct cups_client *cc, json_t *dtun)
-{
- struct sockaddr_storage local_ep_addr;
- json_t *jlocal_gtp_ep, *jrx_teid;
- uint32_t rx_teid;
- int rc;
-
- jlocal_gtp_ep = json_object_get(dtun, "local_gtp_ep");
- jrx_teid = json_object_get(dtun, "rx_teid");
-
- if (!jlocal_gtp_ep || !jrx_teid)
- return -EINVAL;
-
- if (!json_is_object(jlocal_gtp_ep) || !json_is_integer(jrx_teid))
- return -EINVAL;
-
- rc = parse_ep(&local_ep_addr, jlocal_gtp_ep);
- if (rc < 0)
- return rc;
- rx_teid = json_integer_value(jrx_teid);
-
- rc = gtp_tunnel_destroy(g_daemon, &local_ep_addr, rx_teid);
- if (rc < 0) {
- LOGCC(cc, LOGL_NOTICE, "Failed to destroy tunnel\n");
- cups_client_tx_json(cc, gen_uecups_result("destroy_tun_res", "ERR_NOT_FOUND"));
- } else {
- cups_client_tx_json(cc, gen_uecups_result("destroy_tun_res", "OK"));
- }
-
- return 0;
-}
-
-static json_t *gen_uecups_term_ind(pid_t pid, int status)
-{
- json_t *jterm = json_object();
- json_t *jret = json_object();
-
- json_object_set_new(jterm, "pid", json_integer(pid));
- json_object_set_new(jterm, "exit_code", json_integer(status));
-
- json_object_set_new(jret, "program_term_ind", jterm);
-
- return jret;
-}
-
-
-static struct subprocess *subprocess_by_pid(struct gtp_daemon *d, pid_t pid)
-{
- struct subprocess *sproc;
- llist_for_each_entry(sproc, &d->subprocesses, list) {
- if (sproc->pid == pid)
- return sproc;
- }
- return NULL;
-}
-
-static void child_terminated(struct gtp_daemon *d, int pid, int status)
-{
- struct subprocess *sproc;
- json_t *jterm_ind;
-
- LOGP(DUECUPS, LOGL_DEBUG, "SIGCHLD receive from pid %u; status=%d\n", pid, status);
-
- sproc = subprocess_by_pid(d, pid);
- if (!sproc) {
- LOGP(DUECUPS, LOGL_NOTICE, "subprocess %u terminated (status=%d) but we don't know it?\n",
- pid, status);
- return;
- }
-
- /* generate prog_term_ind towards control plane */
- jterm_ind = gen_uecups_term_ind(pid, status);
- if (!jterm_ind)
- return;
-
- cups_client_tx_json(sproc->cups_client, jterm_ind);
-
- llist_del(&sproc->list);
- talloc_free(sproc);
-}
-
static void sigchild_cb(struct osmo_signalfd *osfd, const struct signalfd_siginfo *fdsi)
{
struct gtp_daemon *d = osfd->data;
@@ -385,283 +66,6 @@
}
-static json_t *gen_uecups_start_res(pid_t pid, const char *result)
-{
- json_t *ret = gen_uecups_result("start_program_res", result);
- json_object_set_new(json_object_get(ret, "start_program_res"), "pid", json_integer(pid));
-
- return ret;
-}
-
-static int cups_client_handle_start_program(struct cups_client *cc, json_t *sprog)
-{
- json_t *juser, *jcmd, *jenv, *jnetns, *jres;
- struct gtp_daemon *d = cc->d;
- const char *cmd, *user;
- char **addl_env = NULL;
- sigset_t oldmask;
- int nsfd = -1, rc;
-
- juser = json_object_get(sprog, "run_as_user");
- jcmd = json_object_get(sprog, "command");
- jenv = json_object_get(sprog, "environment");
- jnetns = json_object_get(sprog, "tun_netns_name");
-
- /* mandatory parts */
- if (!juser || !jcmd)
- return -EINVAL;
- if (!json_is_string(juser) || !json_is_string(jcmd))
- return -EINVAL;
-
- /* optional parts */
- if (jenv && !json_is_array(jenv))
- return -EINVAL;
- if (jnetns && !json_is_string(jnetns))
- return -EINVAL;
-
- cmd = json_string_value(jcmd);
- user = json_string_value(juser);
- if (jnetns) {
- struct tun_device *tun = tun_device_find_netns(d, json_string_value(jnetns));
- if (!tun)
- return -ENODEV;
- nsfd = tun->netns_fd;
- }
-
- /* build environment */
- if (jenv) {
- json_t *j;
- int i;
- addl_env = talloc_zero_array(cc, char *, json_array_size(jenv)+1);
- if (!addl_env)
- return -ENOMEM;
- json_array_foreach(jenv, i, j) {
- addl_env[i] = talloc_strdup(addl_env, json_string_value(j));
- }
- }
-
- if (jnetns) {
- rc = switch_ns(nsfd, &oldmask);
- if (rc < 0) {
- talloc_free(addl_env);
- return -EIO;
- }
- }
-
- rc = osmo_system_nowait2(cmd, osmo_environment_whitelist, addl_env, user);
-
- if (jnetns) {
- OSMO_ASSERT(restore_ns(&oldmask) == 0);
- }
-
- talloc_free(addl_env);
-
- if (rc > 0) {
- /* create a record about the subprocess we started, so we can notify the
- * client that crated it upon termination */
- struct subprocess *sproc = talloc_zero(cc, struct subprocess);
- if (!sproc)
- return -ENOMEM;
-
- sproc->cups_client = cc;
- sproc->pid = rc;
- llist_add_tail(&sproc->list, &d->subprocesses);
- jres = gen_uecups_start_res(sproc->pid, "OK");
- } else {
- jres = gen_uecups_start_res(0, "ERR_INVALID_DATA");
- }
-
- cups_client_tx_json(cc, jres);
-
- return 0;
-}
-
-static int cups_client_handle_reset_all_state(struct cups_client *cc, json_t *sprog)
-{
- struct gtp_daemon *d = cc->d;
- struct gtp_tunnel *t, *t2;
- struct subprocess *p, *p2;
- json_t *jres;
-
- LOGCC(cc, LOGL_DEBUG, "Destroying all tunnels\n");
- pthread_rwlock_wrlock(&d->rwlock);
- llist_for_each_entry_safe(t, t2, &d->gtp_tunnels, list) {
- _gtp_tunnel_destroy(t);
- }
- pthread_rwlock_unlock(&d->rwlock);
-
- /* no locking needed as this list is only used by main thread */
- LOGCC(cc, LOGL_DEBUG, "Destroying all subprocesses\n");
- llist_for_each_entry_safe(p, p2, &d->subprocesses, list) {
- subprocess_destroy(p, SIGKILL);
- }
-
- if (d->reset_all_state_tun_remaining == 0) {
- jres = gen_uecups_result("reset_all_state_res", "OK");
- cups_client_tx_json(cc, jres);
- } else {
- cc->reset_all_state_res_pending = true;
- }
-
- return 0;
-}
-
-static int cups_client_handle_json(struct cups_client *cc, json_t *jroot)
-{
- void *iter;
- const char *key;
- json_t *cmd;
- int rc;
-
- if (!json_is_object(jroot))
- return -EINVAL;
-
- iter = json_object_iter(jroot);
- key = json_object_iter_key(iter);
- cmd = json_object_iter_value(iter);
- if (!iter || !key || !cmd)
- return -EINVAL;
-
- if (!strcmp(key, "create_tun")) {
- rc = cups_client_handle_create_tun(cc, cmd);
- } else if (!strcmp(key, "destroy_tun")) {
- rc = cups_client_handle_destroy_tun(cc, cmd);
- } else if (!strcmp(key, "start_program")) {
- rc = cups_client_handle_start_program(cc, cmd);
- } else if (!strcmp(key, "reset_all_state")) {
- rc = cups_client_handle_reset_all_state(cc, cmd);
- } else {
- LOGCC(cc, LOGL_NOTICE, "Unknown command '%s' received\n", key);
- return -EINVAL;
- }
-
- if (rc < 0) {
- LOGCC(cc, LOGL_NOTICE, "Error %d handling '%s' command\n", rc, key);
- char buf[64];
- snprintf(buf, sizeof(buf), "%s_res", key);
- cups_client_tx_json(cc, gen_uecups_result(buf, "ERR_INVALID_DATA"));
- return -EINVAL;
- }
-
- return 0;
-}
-
-/* control/user plane separation per-client read cb */
-static int cups_client_read_cb(struct osmo_stream_srv *conn)
-{
- struct osmo_fd *ofd = osmo_stream_srv_get_ofd(conn);
- struct cups_client *cc = osmo_stream_srv_get_data(conn);
- struct msgb *msg = msgb_alloc(CUPS_MSGB_SIZE, "Rx JSON");
- struct sctp_sndrcvinfo sinfo;
- json_error_t jerr;
- json_t *jroot;
- int flags = 0;
- int rc = 0;
-
- /* Read message from socket */
- /* we cannot use osmo_stream_srv_recv() here, as we might get some out-of-band info from
- * SCTP. FIXME: add something like osmo_stream_srv_recv_sctp() to libosmo-netif and use
- * it here as well as in libosmo-sigtran and osmo-msc */
- rc = sctp_recvmsg(ofd->fd, msg->tail, msgb_tailroom(msg), NULL, NULL, &sinfo,&flags);
- if (rc <= 0) {
- osmo_stream_srv_destroy(conn);
- rc = -1;
- goto out;
- } else
- msgb_put(msg, rc);
-
- if (flags & MSG_NOTIFICATION) {
- union sctp_notification *notif = (union sctp_notification *) msgb_data(msg);
- switch (notif->sn_header.sn_type) {
- case SCTP_SHUTDOWN_EVENT:
- osmo_stream_srv_destroy(conn);
- rc = -EBADF;
- goto out;
- default:
- break;
- }
- goto out;
- }
-
- LOGCC(cc, LOGL_DEBUG, "Rx '%s'\n", msgb_data(msg));
-
- /* Parse the JSON */
- jroot = json_loadb((const char *) msgb_data(msg), msgb_length(msg), 0, &jerr);
- if (!jroot) {
- LOGCC(cc, LOGL_ERROR, "Error decoding JSON (%s)", jerr.text);
- rc = -1;
- goto out;
- }
-
- /* Dispatch */
- rc = cups_client_handle_json(cc, jroot);
-
- json_decref(jroot);
- msgb_free(msg);
-
- return 0;
-out:
- msgb_free(msg);
- return rc;
-}
-
-static int cups_client_closed_cb(struct osmo_stream_srv *conn)
-{
- struct cups_client *cc = osmo_stream_srv_get_data(conn);
- struct gtp_daemon *d = cc->d;
- struct subprocess *p, *p2;
-
- /* kill + forget about all subprocesses of this client */
- /* We need no locking here as the subprocess list is only used from the main thread */
- llist_for_each_entry_safe(p, p2, &d->subprocesses, list) {
- if (p->cups_client == cc)
- subprocess_destroy(p, SIGKILL);
- }
-
- LOGCC(cc, LOGL_INFO, "UECUPS connection lost\n");
- llist_del(&cc->list);
- return 0;
-}
-
-
-/* the control/user plane separation server bind/accept fd */
-static int cups_accept_cb(struct osmo_stream_srv_link *link, int fd)
-{
- struct gtp_daemon *d = osmo_stream_srv_link_get_data(link);
- struct cups_client *cc;
-
- cc = talloc_zero(d, struct cups_client);
- if (!cc)
- return -1;
-
- cc->d = d;
- osmo_sock_get_name_buf(cc->sockname, sizeof(cc->sockname), fd);
- cc->srv = osmo_stream_srv_create(cc, link, fd, cups_client_read_cb, cups_client_closed_cb, cc);
- if (!cc->srv) {
- talloc_free(cc);
- return -1;
- }
- LOGCC(cc, LOGL_INFO, "Accepted new UECUPS connection\n");
-
- llist_add_tail(&cc->list, &d->cups_clients);
-
- return 0;
-}
-
-/***********************************************************************
- * GTP Daemon
- ***********************************************************************/
-
-#ifndef OSMO_VTY_PORT_UECUPS
-#define OSMO_VTY_PORT_UECUPS 4268
-#endif
-
-static void *g_tall_ctx;
-struct gtp_daemon *g_daemon;
-static int g_daemonize;
-static char *g_config_file = "osmo-uecups-daemon.cfg";
-extern struct vty_app_info g_vty_info;
-
static void signal_cb(struct osmo_signalfd *osfd, const struct signalfd_siginfo *fdsi)
{
switch (fdsi->ssi_signo) {
@@ -676,55 +80,6 @@
}
}
-static void gtp_daemon_itq_read_cb(struct osmo_it_q *q, struct llist_head *item)
-{
- struct gtp_daemon *d = (struct gtp_daemon *)q->data;
- struct gtp_daemon_itq_msg *itq_msg = container_of(item, struct gtp_daemon_itq_msg, list);
-
- LOGP(DTUN, LOGL_DEBUG, "Rx new itq message from %s\n",
- itq_msg->tun_released.tun->devname);
-
- _tun_device_destroy(itq_msg->tun_released.tun);
- if (d->reset_all_state_tun_remaining > 0) {
- d->reset_all_state_tun_remaining--;
- if (d->reset_all_state_tun_remaining == 0) {
- struct cups_client *cc;
- llist_for_each_entry(cc, &d->cups_clients, list) {
- json_t *jres;
- if (!cc->reset_all_state_res_pending)
- continue;
- cc->reset_all_state_res_pending = false;
- jres = gen_uecups_result("reset_all_state_res", "OK");
- cups_client_tx_json(cc, jres);
- }
- }
- }
-}
-
-static struct gtp_daemon *gtp_daemon_alloc(void *ctx)
-{
- struct gtp_daemon *d = talloc_zero(ctx, struct gtp_daemon);
- if (!d)
- return NULL;
-
- INIT_LLIST_HEAD(&d->gtp_endpoints);
- INIT_LLIST_HEAD(&d->tun_devices);
- INIT_LLIST_HEAD(&d->gtp_tunnels);
- INIT_LLIST_HEAD(&d->subprocesses);
- pthread_rwlock_init(&d->rwlock, NULL);
- d->main_thread = pthread_self();
-
- d->itq = osmo_it_q_alloc(d, "itq", 4096, gtp_daemon_itq_read_cb, d);
- osmo_fd_register(&d->itq->event_ofd);
-
- INIT_LLIST_HEAD(&d->cups_clients);
-
- d->cfg.cups_local_ip = talloc_strdup(d, "localhost");
- d->cfg.cups_local_port = UECUPS_SCTP_PORT;
-
- return d;
-}
-
static const struct log_info_cat log_categories[] = {
[DTUN] = {
.name ="DTUN",
@@ -883,22 +238,14 @@
if (rc < 0)
exit(1);
- g_daemon->cups_link = osmo_stream_srv_link_create(g_daemon);
+ /* UECUPS socket for control from control plane side */
+ g_daemon->cups_link = cups_srv_link_create(g_daemon);
if (!g_daemon->cups_link) {
fprintf(stderr, "Failed to create CUPS socket %s:%u (%s)\n",
g_daemon->cfg.cups_local_ip, g_daemon->cfg.cups_local_port, strerror(errno));
exit(1);
}
- /* UECUPS socket for control from control plane side */
- osmo_stream_srv_link_set_nodelay(g_daemon->cups_link, true);
- osmo_stream_srv_link_set_addr(g_daemon->cups_link, g_daemon->cfg.cups_local_ip);
- osmo_stream_srv_link_set_port(g_daemon->cups_link, g_daemon->cfg.cups_local_port);
- osmo_stream_srv_link_set_proto(g_daemon->cups_link, IPPROTO_SCTP);
- osmo_stream_srv_link_set_data(g_daemon->cups_link, g_daemon);
- osmo_stream_srv_link_set_accept_cb(g_daemon->cups_link, cups_accept_cb);
- osmo_stream_srv_link_open(g_daemon->cups_link);
-
/* block SIGCHLD via normal delivery; redirect it to signalfd */
sigset_t sigset;
sigemptyset(&sigset);
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