Also delete a few redundant #include. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190315145123.28030-2-armbru@redhat.com>
832 lines
22 KiB
C
832 lines
22 KiB
C
/*
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* QEMU paravirtual RDMA - rdmacm-mux implementation
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*
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* Copyright (C) 2018 Oracle
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* Copyright (C) 2018 Red Hat Inc
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*
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* Authors:
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* Yuval Shaia <yuval.shaia@oracle.com>
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* Marcel Apfelbaum <marcel@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include <sys/poll.h>
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#include <sys/ioctl.h>
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#include <pthread.h>
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#include <syslog.h>
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#include <infiniband/verbs.h>
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#include <infiniband/umad.h>
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#include <infiniband/umad_types.h>
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#include <infiniband/umad_sa.h>
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#include <infiniband/umad_cm.h>
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#include "rdmacm-mux.h"
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#define SCALE_US 1000
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#define COMMID_TTL 2 /* How many SCALE_US a context of MAD session is saved */
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#define SLEEP_SECS 5 /* This is used both in poll() and thread */
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#define SERVER_LISTEN_BACKLOG 10
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#define MAX_CLIENTS 4096
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#define MAD_RMPP_VERSION 0
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#define MAD_METHOD_MASK0 0x8
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#define IB_USER_MAD_LONGS_PER_METHOD_MASK (128 / (8 * sizeof(long)))
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#define CM_REQ_DGID_POS 80
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#define CM_SIDR_REQ_DGID_POS 44
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/* The below can be override by command line parameter */
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#define UNIX_SOCKET_PATH "/var/run/rdmacm-mux"
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/* Has format %s-%s-%d" <path>-<rdma-dev--name>-<port> */
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#define SOCKET_PATH_MAX (PATH_MAX - NAME_MAX - sizeof(int) - 2)
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#define RDMA_PORT_NUM 1
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typedef struct RdmaCmServerArgs {
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char unix_socket_path[PATH_MAX];
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char rdma_dev_name[NAME_MAX];
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int rdma_port_num;
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} RdmaCMServerArgs;
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typedef struct CommId2FdEntry {
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int fd;
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int ttl; /* Initialized to 2, decrement each timeout, entry delete when 0 */
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__be64 gid_ifid;
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} CommId2FdEntry;
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typedef struct RdmaCmUMadAgent {
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int port_id;
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int agent_id;
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GHashTable *gid2fd; /* Used to find fd of a given gid */
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GHashTable *commid2fd; /* Used to find fd on of a given comm_id */
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} RdmaCmUMadAgent;
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typedef struct RdmaCmServer {
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bool run;
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RdmaCMServerArgs args;
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struct pollfd fds[MAX_CLIENTS];
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int nfds;
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RdmaCmUMadAgent umad_agent;
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pthread_t umad_recv_thread;
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pthread_rwlock_t lock;
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} RdmaCMServer;
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static RdmaCMServer server = {0};
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static void usage(const char *progname)
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{
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printf("Usage: %s [OPTION]...\n"
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"Start a RDMA-CM multiplexer\n"
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"\n"
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"\t-h Show this help\n"
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"\t-d rdma-device-name Name of RDMA device to register with\n"
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"\t-s unix-socket-path Path to unix socket to listen on (default %s)\n"
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"\t-p rdma-device-port Port number of RDMA device to register with (default %d)\n",
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progname, UNIX_SOCKET_PATH, RDMA_PORT_NUM);
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}
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static void help(const char *progname)
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{
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fprintf(stderr, "Try '%s -h' for more information.\n", progname);
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}
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static void parse_args(int argc, char *argv[])
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{
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int c;
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char unix_socket_path[SOCKET_PATH_MAX];
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strcpy(server.args.rdma_dev_name, "");
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strcpy(unix_socket_path, UNIX_SOCKET_PATH);
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server.args.rdma_port_num = RDMA_PORT_NUM;
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while ((c = getopt(argc, argv, "hs:d:p:")) != -1) {
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switch (c) {
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case 'h':
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usage(argv[0]);
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exit(0);
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case 'd':
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strncpy(server.args.rdma_dev_name, optarg, NAME_MAX - 1);
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break;
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case 's':
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/* This is temporary, final name will build below */
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strncpy(unix_socket_path, optarg, SOCKET_PATH_MAX);
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break;
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case 'p':
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server.args.rdma_port_num = atoi(optarg);
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break;
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default:
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help(argv[0]);
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exit(1);
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}
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}
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if (!strcmp(server.args.rdma_dev_name, "")) {
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fprintf(stderr, "Missing RDMA device name\n");
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help(argv[0]);
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exit(1);
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}
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/* Build unique unix-socket file name */
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snprintf(server.args.unix_socket_path, PATH_MAX, "%s-%s-%d",
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unix_socket_path, server.args.rdma_dev_name,
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server.args.rdma_port_num);
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syslog(LOG_INFO, "unix_socket_path=%s", server.args.unix_socket_path);
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syslog(LOG_INFO, "rdma-device-name=%s", server.args.rdma_dev_name);
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syslog(LOG_INFO, "rdma-device-port=%d", server.args.rdma_port_num);
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}
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static void hash_tbl_alloc(void)
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{
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server.umad_agent.gid2fd = g_hash_table_new_full(g_int64_hash,
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g_int64_equal,
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g_free, g_free);
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server.umad_agent.commid2fd = g_hash_table_new_full(g_int_hash,
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g_int_equal,
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g_free, g_free);
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}
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static void hash_tbl_free(void)
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{
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if (server.umad_agent.commid2fd) {
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g_hash_table_destroy(server.umad_agent.commid2fd);
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}
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if (server.umad_agent.gid2fd) {
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g_hash_table_destroy(server.umad_agent.gid2fd);
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}
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}
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static int _hash_tbl_search_fd_by_ifid(__be64 *gid_ifid)
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{
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int *fd;
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fd = g_hash_table_lookup(server.umad_agent.gid2fd, gid_ifid);
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if (!fd) {
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/* Let's try IPv4 */
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*gid_ifid |= 0x00000000ffff0000;
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fd = g_hash_table_lookup(server.umad_agent.gid2fd, gid_ifid);
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}
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return fd ? *fd : 0;
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}
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static int hash_tbl_search_fd_by_ifid(int *fd, __be64 *gid_ifid)
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{
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pthread_rwlock_rdlock(&server.lock);
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*fd = _hash_tbl_search_fd_by_ifid(gid_ifid);
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pthread_rwlock_unlock(&server.lock);
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if (!fd) {
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syslog(LOG_WARNING, "Can't find matching for ifid 0x%llx\n", *gid_ifid);
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return -ENOENT;
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}
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return 0;
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}
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static int hash_tbl_search_fd_by_comm_id(uint32_t comm_id, int *fd,
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__be64 *gid_idid)
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{
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CommId2FdEntry *fde;
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pthread_rwlock_rdlock(&server.lock);
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fde = g_hash_table_lookup(server.umad_agent.commid2fd, &comm_id);
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pthread_rwlock_unlock(&server.lock);
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if (!fde) {
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syslog(LOG_WARNING, "Can't find matching for comm_id 0x%x\n", comm_id);
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return -ENOENT;
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}
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*fd = fde->fd;
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*gid_idid = fde->gid_ifid;
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return 0;
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}
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static RdmaCmMuxErrCode add_fd_ifid_pair(int fd, __be64 gid_ifid)
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{
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int fd1;
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pthread_rwlock_wrlock(&server.lock);
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fd1 = _hash_tbl_search_fd_by_ifid(&gid_ifid);
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if (fd1) { /* record already exist - an error */
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pthread_rwlock_unlock(&server.lock);
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return fd == fd1 ? RDMACM_MUX_ERR_CODE_EEXIST :
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RDMACM_MUX_ERR_CODE_EACCES;
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}
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g_hash_table_insert(server.umad_agent.gid2fd, g_memdup(&gid_ifid,
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sizeof(gid_ifid)), g_memdup(&fd, sizeof(fd)));
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pthread_rwlock_unlock(&server.lock);
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syslog(LOG_INFO, "0x%lx registered on socket %d",
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be64toh((uint64_t)gid_ifid), fd);
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return RDMACM_MUX_ERR_CODE_OK;
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}
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static RdmaCmMuxErrCode delete_fd_ifid_pair(int fd, __be64 gid_ifid)
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{
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int fd1;
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pthread_rwlock_wrlock(&server.lock);
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fd1 = _hash_tbl_search_fd_by_ifid(&gid_ifid);
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if (!fd1) { /* record not exist - an error */
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pthread_rwlock_unlock(&server.lock);
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return RDMACM_MUX_ERR_CODE_ENOTFOUND;
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}
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g_hash_table_remove(server.umad_agent.gid2fd, g_memdup(&gid_ifid,
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sizeof(gid_ifid)));
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pthread_rwlock_unlock(&server.lock);
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syslog(LOG_INFO, "0x%lx unregistered on socket %d",
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be64toh((uint64_t)gid_ifid), fd);
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return RDMACM_MUX_ERR_CODE_OK;
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}
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static void hash_tbl_save_fd_comm_id_pair(int fd, uint32_t comm_id,
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uint64_t gid_ifid)
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{
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CommId2FdEntry fde = {fd, COMMID_TTL, gid_ifid};
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pthread_rwlock_wrlock(&server.lock);
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g_hash_table_insert(server.umad_agent.commid2fd,
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g_memdup(&comm_id, sizeof(comm_id)),
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g_memdup(&fde, sizeof(fde)));
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pthread_rwlock_unlock(&server.lock);
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}
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static gboolean remove_old_comm_ids(gpointer key, gpointer value,
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gpointer user_data)
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{
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CommId2FdEntry *fde = (CommId2FdEntry *)value;
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return !fde->ttl--;
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}
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static gboolean remove_entry_from_gid2fd(gpointer key, gpointer value,
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gpointer user_data)
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{
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if (*(int *)value == *(int *)user_data) {
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syslog(LOG_INFO, "0x%lx unregistered on socket %d",
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be64toh(*(uint64_t *)key), *(int *)value);
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return true;
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}
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return false;
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}
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static void hash_tbl_remove_fd_ifid_pair(int fd)
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{
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pthread_rwlock_wrlock(&server.lock);
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g_hash_table_foreach_remove(server.umad_agent.gid2fd,
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remove_entry_from_gid2fd, (gpointer)&fd);
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pthread_rwlock_unlock(&server.lock);
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}
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static int get_fd(const char *mad, int umad_len, int *fd, __be64 *gid_ifid)
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{
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struct umad_hdr *hdr = (struct umad_hdr *)mad;
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char *data = (char *)hdr + sizeof(*hdr);
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int32_t comm_id = 0;
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uint16_t attr_id = be16toh(hdr->attr_id);
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int rc = 0;
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if (umad_len <= sizeof(*hdr)) {
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rc = -EINVAL;
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syslog(LOG_DEBUG, "Ignoring MAD packets with header only\n");
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goto out;
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}
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switch (attr_id) {
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case UMAD_CM_ATTR_REQ:
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if (unlikely(umad_len < sizeof(*hdr) + CM_REQ_DGID_POS +
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sizeof(*gid_ifid))) {
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rc = -EINVAL;
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syslog(LOG_WARNING,
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"Invalid MAD packet size (%d) for attr_id 0x%x\n", umad_len,
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attr_id);
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goto out;
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}
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memcpy(gid_ifid, data + CM_REQ_DGID_POS, sizeof(*gid_ifid));
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rc = hash_tbl_search_fd_by_ifid(fd, gid_ifid);
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break;
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case UMAD_CM_ATTR_SIDR_REQ:
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if (unlikely(umad_len < sizeof(*hdr) + CM_SIDR_REQ_DGID_POS +
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sizeof(*gid_ifid))) {
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rc = -EINVAL;
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syslog(LOG_WARNING,
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"Invalid MAD packet size (%d) for attr_id 0x%x\n", umad_len,
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attr_id);
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goto out;
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}
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memcpy(gid_ifid, data + CM_SIDR_REQ_DGID_POS, sizeof(*gid_ifid));
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rc = hash_tbl_search_fd_by_ifid(fd, gid_ifid);
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break;
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case UMAD_CM_ATTR_REP:
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/* Fall through */
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case UMAD_CM_ATTR_REJ:
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/* Fall through */
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case UMAD_CM_ATTR_DREQ:
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/* Fall through */
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case UMAD_CM_ATTR_DREP:
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/* Fall through */
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case UMAD_CM_ATTR_RTU:
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data += sizeof(comm_id);
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/* Fall through */
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case UMAD_CM_ATTR_SIDR_REP:
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if (unlikely(umad_len < sizeof(*hdr) + sizeof(comm_id))) {
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rc = -EINVAL;
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syslog(LOG_WARNING,
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"Invalid MAD packet size (%d) for attr_id 0x%x\n", umad_len,
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attr_id);
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goto out;
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}
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memcpy(&comm_id, data, sizeof(comm_id));
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if (comm_id) {
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rc = hash_tbl_search_fd_by_comm_id(comm_id, fd, gid_ifid);
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}
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break;
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default:
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rc = -EINVAL;
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syslog(LOG_WARNING, "Unsupported attr_id 0x%x\n", attr_id);
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}
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syslog(LOG_DEBUG, "mad_to_vm: %d 0x%x 0x%x\n", *fd, attr_id, comm_id);
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out:
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return rc;
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}
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static void *umad_recv_thread_func(void *args)
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{
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int rc;
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RdmaCmMuxMsg msg = {};
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int fd = -2;
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msg.hdr.msg_type = RDMACM_MUX_MSG_TYPE_REQ;
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msg.hdr.op_code = RDMACM_MUX_OP_CODE_MAD;
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while (server.run) {
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do {
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msg.umad_len = sizeof(msg.umad.mad);
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rc = umad_recv(server.umad_agent.port_id, &msg.umad, &msg.umad_len,
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SLEEP_SECS * SCALE_US);
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if ((rc == -EIO) || (rc == -EINVAL)) {
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syslog(LOG_CRIT, "Fatal error while trying to read MAD");
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}
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if (rc == -ETIMEDOUT) {
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g_hash_table_foreach_remove(server.umad_agent.commid2fd,
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remove_old_comm_ids, NULL);
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}
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} while (rc && server.run);
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if (server.run) {
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rc = get_fd(msg.umad.mad, msg.umad_len, &fd,
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&msg.hdr.sgid.global.interface_id);
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if (rc) {
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continue;
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}
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send(fd, &msg, sizeof(msg), 0);
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}
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}
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return NULL;
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}
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static int read_and_process(int fd)
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{
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int rc;
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RdmaCmMuxMsg msg = {};
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struct umad_hdr *hdr;
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uint32_t *comm_id = 0;
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uint16_t attr_id;
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rc = recv(fd, &msg, sizeof(msg), 0);
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syslog(LOG_DEBUG, "Socket %d, recv %d\n", fd, rc);
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if (rc < 0 && errno != EWOULDBLOCK) {
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syslog(LOG_ERR, "Fail to read from socket %d\n", fd);
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return -EIO;
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}
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if (!rc) {
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syslog(LOG_ERR, "Fail to read from socket %d\n", fd);
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return -EPIPE;
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}
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if (msg.hdr.msg_type != RDMACM_MUX_MSG_TYPE_REQ) {
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syslog(LOG_WARNING, "Got non-request message (%d) from socket %d\n",
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msg.hdr.msg_type, fd);
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return -EPERM;
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}
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switch (msg.hdr.op_code) {
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case RDMACM_MUX_OP_CODE_REG:
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rc = add_fd_ifid_pair(fd, msg.hdr.sgid.global.interface_id);
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break;
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case RDMACM_MUX_OP_CODE_UNREG:
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rc = delete_fd_ifid_pair(fd, msg.hdr.sgid.global.interface_id);
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break;
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case RDMACM_MUX_OP_CODE_MAD:
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/* If this is REQ or REP then store the pair comm_id,fd to be later
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* used for other messages where gid is unknown */
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hdr = (struct umad_hdr *)msg.umad.mad;
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attr_id = be16toh(hdr->attr_id);
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if ((attr_id == UMAD_CM_ATTR_REQ) || (attr_id == UMAD_CM_ATTR_DREQ) ||
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(attr_id == UMAD_CM_ATTR_SIDR_REQ) ||
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(attr_id == UMAD_CM_ATTR_REP) || (attr_id == UMAD_CM_ATTR_DREP)) {
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comm_id = (uint32_t *)(msg.umad.mad + sizeof(*hdr));
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hash_tbl_save_fd_comm_id_pair(fd, *comm_id,
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msg.hdr.sgid.global.interface_id);
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}
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syslog(LOG_DEBUG, "vm_to_mad: %d 0x%x 0x%x\n", fd, attr_id,
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comm_id ? *comm_id : 0);
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rc = umad_send(server.umad_agent.port_id, server.umad_agent.agent_id,
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&msg.umad, msg.umad_len, 1, 0);
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if (rc) {
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syslog(LOG_ERR,
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"Fail to send MAD message (0x%x) from socket %d, err=%d",
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attr_id, fd, rc);
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}
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break;
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default:
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syslog(LOG_ERR, "Got invalid op_code (%d) from socket %d",
|
|
msg.hdr.msg_type, fd);
|
|
rc = RDMACM_MUX_ERR_CODE_EINVAL;
|
|
}
|
|
|
|
msg.hdr.msg_type = RDMACM_MUX_MSG_TYPE_RESP;
|
|
msg.hdr.err_code = rc;
|
|
rc = send(fd, &msg, sizeof(msg), 0);
|
|
|
|
return rc == sizeof(msg) ? 0 : -EPIPE;
|
|
}
|
|
|
|
static int accept_all(void)
|
|
{
|
|
int fd, rc = 0;;
|
|
|
|
pthread_rwlock_wrlock(&server.lock);
|
|
|
|
do {
|
|
if ((server.nfds + 1) > MAX_CLIENTS) {
|
|
syslog(LOG_WARNING, "Too many clients (%d)", server.nfds);
|
|
rc = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
fd = accept(server.fds[0].fd, NULL, NULL);
|
|
if (fd < 0) {
|
|
if (errno != EWOULDBLOCK) {
|
|
syslog(LOG_WARNING, "accept() failed");
|
|
rc = -EIO;
|
|
goto out;
|
|
}
|
|
break;
|
|
}
|
|
|
|
syslog(LOG_INFO, "Client connected on socket %d\n", fd);
|
|
server.fds[server.nfds].fd = fd;
|
|
server.fds[server.nfds].events = POLLIN;
|
|
server.nfds++;
|
|
} while (fd != -1);
|
|
|
|
out:
|
|
pthread_rwlock_unlock(&server.lock);
|
|
return rc;
|
|
}
|
|
|
|
static void compress_fds(void)
|
|
{
|
|
int i, j;
|
|
int closed = 0;
|
|
|
|
pthread_rwlock_wrlock(&server.lock);
|
|
|
|
for (i = 1; i < server.nfds; i++) {
|
|
if (!server.fds[i].fd) {
|
|
closed++;
|
|
for (j = i; j < server.nfds - 1; j++) {
|
|
server.fds[j] = server.fds[j + 1];
|
|
}
|
|
}
|
|
}
|
|
|
|
server.nfds -= closed;
|
|
|
|
pthread_rwlock_unlock(&server.lock);
|
|
}
|
|
|
|
static void close_fd(int idx)
|
|
{
|
|
close(server.fds[idx].fd);
|
|
syslog(LOG_INFO, "Socket %d closed\n", server.fds[idx].fd);
|
|
hash_tbl_remove_fd_ifid_pair(server.fds[idx].fd);
|
|
server.fds[idx].fd = 0;
|
|
}
|
|
|
|
static void run(void)
|
|
{
|
|
int rc, nfds, i;
|
|
bool compress = false;
|
|
|
|
syslog(LOG_INFO, "Service started");
|
|
|
|
while (server.run) {
|
|
rc = poll(server.fds, server.nfds, SLEEP_SECS * SCALE_US);
|
|
if (rc < 0) {
|
|
if (errno != EINTR) {
|
|
syslog(LOG_WARNING, "poll() failed");
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (rc == 0) {
|
|
continue;
|
|
}
|
|
|
|
nfds = server.nfds;
|
|
for (i = 0; i < nfds; i++) {
|
|
syslog(LOG_DEBUG, "pollfd[%d]: revents 0x%x, events 0x%x\n", i,
|
|
server.fds[i].revents, server.fds[i].events);
|
|
if (server.fds[i].revents == 0) {
|
|
continue;
|
|
}
|
|
|
|
if (server.fds[i].revents != POLLIN) {
|
|
if (i == 0) {
|
|
syslog(LOG_NOTICE, "Unexpected poll() event (0x%x)\n",
|
|
server.fds[i].revents);
|
|
} else {
|
|
close_fd(i);
|
|
compress = true;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (i == 0) {
|
|
rc = accept_all();
|
|
if (rc) {
|
|
continue;
|
|
}
|
|
} else {
|
|
rc = read_and_process(server.fds[i].fd);
|
|
if (rc) {
|
|
close_fd(i);
|
|
compress = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (compress) {
|
|
compress = false;
|
|
compress_fds();
|
|
}
|
|
}
|
|
}
|
|
|
|
static void fini_listener(void)
|
|
{
|
|
int i;
|
|
|
|
if (server.fds[0].fd <= 0) {
|
|
return;
|
|
}
|
|
|
|
for (i = server.nfds - 1; i >= 0; i--) {
|
|
if (server.fds[i].fd) {
|
|
close(server.fds[i].fd);
|
|
}
|
|
}
|
|
|
|
unlink(server.args.unix_socket_path);
|
|
}
|
|
|
|
static void fini_umad(void)
|
|
{
|
|
if (server.umad_agent.agent_id) {
|
|
umad_unregister(server.umad_agent.port_id, server.umad_agent.agent_id);
|
|
}
|
|
|
|
if (server.umad_agent.port_id) {
|
|
umad_close_port(server.umad_agent.port_id);
|
|
}
|
|
|
|
hash_tbl_free();
|
|
}
|
|
|
|
static void fini(void)
|
|
{
|
|
if (server.umad_recv_thread) {
|
|
pthread_join(server.umad_recv_thread, NULL);
|
|
server.umad_recv_thread = 0;
|
|
}
|
|
fini_umad();
|
|
fini_listener();
|
|
pthread_rwlock_destroy(&server.lock);
|
|
|
|
syslog(LOG_INFO, "Service going down");
|
|
}
|
|
|
|
static int init_listener(void)
|
|
{
|
|
struct sockaddr_un sun;
|
|
int rc, on = 1;
|
|
|
|
server.fds[0].fd = socket(AF_UNIX, SOCK_STREAM, 0);
|
|
if (server.fds[0].fd < 0) {
|
|
syslog(LOG_ALERT, "socket() failed");
|
|
return -EIO;
|
|
}
|
|
|
|
rc = setsockopt(server.fds[0].fd, SOL_SOCKET, SO_REUSEADDR, (char *)&on,
|
|
sizeof(on));
|
|
if (rc < 0) {
|
|
syslog(LOG_ALERT, "setsockopt() failed");
|
|
rc = -EIO;
|
|
goto err;
|
|
}
|
|
|
|
rc = ioctl(server.fds[0].fd, FIONBIO, (char *)&on);
|
|
if (rc < 0) {
|
|
syslog(LOG_ALERT, "ioctl() failed");
|
|
rc = -EIO;
|
|
goto err;
|
|
}
|
|
|
|
if (strlen(server.args.unix_socket_path) >= sizeof(sun.sun_path)) {
|
|
syslog(LOG_ALERT,
|
|
"Invalid unix_socket_path, size must be less than %ld\n",
|
|
sizeof(sun.sun_path));
|
|
rc = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
sun.sun_family = AF_UNIX;
|
|
rc = snprintf(sun.sun_path, sizeof(sun.sun_path), "%s",
|
|
server.args.unix_socket_path);
|
|
if (rc < 0 || rc >= sizeof(sun.sun_path)) {
|
|
syslog(LOG_ALERT, "Could not copy unix socket path\n");
|
|
rc = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
rc = bind(server.fds[0].fd, (struct sockaddr *)&sun, sizeof(sun));
|
|
if (rc < 0) {
|
|
syslog(LOG_ALERT, "bind() failed");
|
|
rc = -EIO;
|
|
goto err;
|
|
}
|
|
|
|
rc = listen(server.fds[0].fd, SERVER_LISTEN_BACKLOG);
|
|
if (rc < 0) {
|
|
syslog(LOG_ALERT, "listen() failed");
|
|
rc = -EIO;
|
|
goto err;
|
|
}
|
|
|
|
server.fds[0].events = POLLIN;
|
|
server.nfds = 1;
|
|
server.run = true;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
close(server.fds[0].fd);
|
|
return rc;
|
|
}
|
|
|
|
static int init_umad(void)
|
|
{
|
|
long method_mask[IB_USER_MAD_LONGS_PER_METHOD_MASK];
|
|
|
|
server.umad_agent.port_id = umad_open_port(server.args.rdma_dev_name,
|
|
server.args.rdma_port_num);
|
|
|
|
if (server.umad_agent.port_id < 0) {
|
|
syslog(LOG_WARNING, "umad_open_port() failed");
|
|
return -EIO;
|
|
}
|
|
|
|
memset(&method_mask, 0, sizeof(method_mask));
|
|
method_mask[0] = MAD_METHOD_MASK0;
|
|
server.umad_agent.agent_id = umad_register(server.umad_agent.port_id,
|
|
UMAD_CLASS_CM,
|
|
UMAD_SA_CLASS_VERSION,
|
|
MAD_RMPP_VERSION, method_mask);
|
|
if (server.umad_agent.agent_id < 0) {
|
|
syslog(LOG_WARNING, "umad_register() failed");
|
|
return -EIO;
|
|
}
|
|
|
|
hash_tbl_alloc();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void signal_handler(int sig, siginfo_t *siginfo, void *context)
|
|
{
|
|
static bool warned;
|
|
|
|
/* Prevent stop if clients are connected */
|
|
if (server.nfds != 1) {
|
|
if (!warned) {
|
|
syslog(LOG_WARNING,
|
|
"Can't stop while active client exist, resend SIGINT to overid");
|
|
warned = true;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (sig == SIGINT) {
|
|
server.run = false;
|
|
fini();
|
|
}
|
|
|
|
exit(0);
|
|
}
|
|
|
|
static int init(void)
|
|
{
|
|
int rc;
|
|
struct sigaction sig = {};
|
|
|
|
rc = init_listener();
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
rc = init_umad();
|
|
if (rc) {
|
|
return rc;
|
|
}
|
|
|
|
pthread_rwlock_init(&server.lock, 0);
|
|
|
|
rc = pthread_create(&server.umad_recv_thread, NULL, umad_recv_thread_func,
|
|
NULL);
|
|
if (rc) {
|
|
syslog(LOG_ERR, "Fail to create UMAD receiver thread (%d)\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
sig.sa_sigaction = &signal_handler;
|
|
sig.sa_flags = SA_SIGINFO;
|
|
rc = sigaction(SIGINT, &sig, NULL);
|
|
if (rc < 0) {
|
|
syslog(LOG_ERR, "Fail to install SIGINT handler (%d)\n", errno);
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int rc;
|
|
|
|
memset(&server, 0, sizeof(server));
|
|
|
|
parse_args(argc, argv);
|
|
|
|
rc = init();
|
|
if (rc) {
|
|
syslog(LOG_ERR, "Fail to initialize server (%d)\n", rc);
|
|
rc = -EAGAIN;
|
|
goto out;
|
|
}
|
|
|
|
run();
|
|
|
|
out:
|
|
fini();
|
|
|
|
return rc;
|
|
}
|