/*
* Close monitor session, if any.
*/
static void __close_session(struct ceph_mon_client *monc)
{
dout("__close_session closing mon%d\n", monc->cur_mon);
ceph_msg_revoke(monc->m_auth);
ceph_msg_revoke_incoming(monc->m_auth_reply);
ceph_msg_revoke(monc->m_subscribe);
ceph_msg_revoke_incoming(monc->m_subscribe_ack);
ceph_con_close(&monc->con);
monc->pending_auth = 0;
ceph_auth_reset(monc->auth);
}
/*
* Send an auth request.
*/
static void __send_prepared_auth_request(struct ceph_mon_client *monc, int len)
{
monc->pending_auth = 1;
monc->m_auth->front.iov_len = len;
monc->m_auth->hdr.front_len = cpu_to_le32(len);
ceph_msg_revoke(monc->m_auth);
ceph_msg_get(monc->m_auth); /* keep our ref */
ceph_con_send(&monc->con, monc->m_auth);
}
/*
* Send subscribe request for mdsmap and/or osdmap.
*/
static void __send_subscribe(struct ceph_mon_client *monc)
{
dout("__send_subscribe sub_sent=%u exp=%u want_osd=%d\n",
(unsigned int)monc->sub_sent, __sub_expired(monc),
monc->want_next_osdmap);
if ((__sub_expired(monc) && !monc->sub_sent) ||
monc->want_next_osdmap == 1) {
struct ceph_msg *msg = monc->m_subscribe;
struct ceph_mon_subscribe_item *i;
void *p, *end;
int num;
p = msg->front.iov_base;
end = p + msg->front_max;
num = 1 + !!monc->want_next_osdmap + !!monc->want_mdsmap;
ceph_encode_32(&p, num);
if (monc->want_next_osdmap) {
dout("__send_subscribe to 'osdmap' %u\n",
(unsigned int)monc->have_osdmap);
ceph_encode_string(&p, end, "osdmap", 6);
i = p;
i->have = cpu_to_le64(monc->have_osdmap);
i->onetime = 1;
p += sizeof(*i);
monc->want_next_osdmap = 2; /* requested */
}
if (monc->want_mdsmap) {
dout("__send_subscribe to 'mdsmap' %u+\n",
(unsigned int)monc->have_mdsmap);
ceph_encode_string(&p, end, "mdsmap", 6);
i = p;
i->have = cpu_to_le64(monc->have_mdsmap);
i->onetime = 0;
p += sizeof(*i);
}
ceph_encode_string(&p, end, "monmap", 6);
i = p;
i->have = 0;
i->onetime = 0;
p += sizeof(*i);
msg->front.iov_len = p - msg->front.iov_base;
msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
ceph_msg_revoke(msg);
ceph_con_send(&monc->con, ceph_msg_get(msg));
monc->sub_sent = jiffies | 1; /* never 0 */
}
}
/*
* Send subscribe request for one or more maps, according to
* monc->subs.
*/
static void __send_subscribe(struct ceph_mon_client *monc)
{
struct ceph_msg *msg = monc->m_subscribe;
void *p = msg->front.iov_base;
void *const end = p + msg->front_alloc_len;
int num = 0;
int i;
dout("%s sent %lu\n", __func__, monc->sub_renew_sent);
BUG_ON(monc->cur_mon < 0);
if (!monc->sub_renew_sent)
monc->sub_renew_sent = jiffies | 1; /* never 0 */
msg->hdr.version = cpu_to_le16(2);
for (i = 0; i < ARRAY_SIZE(monc->subs); i++) {
if (monc->subs[i].want)
num++;
}
BUG_ON(num < 1); /* monmap sub is always there */
ceph_encode_32(&p, num);
for (i = 0; i < ARRAY_SIZE(monc->subs); i++) {
char buf[32];
int len;
if (!monc->subs[i].want)
continue;
len = sprintf(buf, "%s", ceph_sub_str[i]);
if (i == CEPH_SUB_MDSMAP &&
monc->fs_cluster_id != CEPH_FS_CLUSTER_ID_NONE)
len += sprintf(buf + len, ".%d", monc->fs_cluster_id);
dout("%s %s start %llu flags 0x%x\n", __func__, buf,
le64_to_cpu(monc->subs[i].item.start),
monc->subs[i].item.flags);
ceph_encode_string(&p, end, buf, len);
memcpy(p, &monc->subs[i].item, sizeof(monc->subs[i].item));
p += sizeof(monc->subs[i].item);
}
BUG_ON(p > end);
msg->front.iov_len = p - msg->front.iov_base;
msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
ceph_msg_revoke(msg);
ceph_con_send(&monc->con, ceph_msg_get(msg));
}
