blob: 90d3396b62fd8a557304cdbef929c6a428febf33 [file] [log] [blame]
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <poll.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/un.h>
#include <sys/uio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <syslog.h>
#include <signal.h>
#ifdef CONFIG_ZLIB
#include <zlib.h>
#endif
#include "fio.h"
#include "options.h"
#include "server.h"
#include "crc/crc16.h"
#include "lib/ieee754.h"
#include "verify-state.h"
#include "smalloc.h"
int fio_net_port = FIO_NET_PORT;
bool exit_backend = false;
enum {
SK_F_FREE = 1,
SK_F_COPY = 2,
SK_F_SIMPLE = 4,
SK_F_VEC = 8,
SK_F_INLINE = 16,
};
struct sk_entry {
struct flist_head list; /* link on sk_out->list */
int flags; /* SK_F_* */
int opcode; /* Actual command fields */
void *buf;
off_t size;
uint64_t tag;
struct flist_head next; /* Other sk_entry's, if linked command */
};
static char *fio_server_arg;
static char *bind_sock;
static struct sockaddr_in saddr_in;
static struct sockaddr_in6 saddr_in6;
static int use_ipv6;
#ifdef CONFIG_ZLIB
static unsigned int has_zlib = 1;
#else
static unsigned int has_zlib = 0;
#endif
static unsigned int use_zlib;
static char me[128];
static pthread_key_t sk_out_key;
struct fio_fork_item {
struct flist_head list;
int exitval;
int signal;
int exited;
pid_t pid;
};
struct cmd_reply {
struct fio_sem lock;
void *data;
size_t size;
int error;
};
static const char *fio_server_ops[FIO_NET_CMD_NR] = {
"",
"QUIT",
"EXIT",
"JOB",
"JOBLINE",
"TEXT",
"TS",
"GS",
"SEND_ETA",
"ETA",
"PROBE",
"START",
"STOP",
"DISK_UTIL",
"SERVER_START",
"ADD_JOB",
"RUN",
"IOLOG",
"UPDATE_JOB",
"LOAD_FILE",
"VTRIGGER",
"SENDFILE",
"JOB_OPT",
};
static void sk_lock(struct sk_out *sk_out)
{
fio_sem_down(&sk_out->lock);
}
static void sk_unlock(struct sk_out *sk_out)
{
fio_sem_up(&sk_out->lock);
}
void sk_out_assign(struct sk_out *sk_out)
{
if (!sk_out)
return;
sk_lock(sk_out);
sk_out->refs++;
sk_unlock(sk_out);
pthread_setspecific(sk_out_key, sk_out);
}
static void sk_out_free(struct sk_out *sk_out)
{
__fio_sem_remove(&sk_out->lock);
__fio_sem_remove(&sk_out->wait);
__fio_sem_remove(&sk_out->xmit);
sfree(sk_out);
}
static int __sk_out_drop(struct sk_out *sk_out)
{
if (sk_out) {
int refs;
sk_lock(sk_out);
assert(sk_out->refs != 0);
refs = --sk_out->refs;
sk_unlock(sk_out);
if (!refs) {
sk_out_free(sk_out);
pthread_setspecific(sk_out_key, NULL);
return 0;
}
}
return 1;
}
void sk_out_drop(void)
{
struct sk_out *sk_out;
sk_out = pthread_getspecific(sk_out_key);
__sk_out_drop(sk_out);
}
static void __fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
uint32_t pdu_len, uint64_t tag)
{
memset(cmd, 0, sizeof(*cmd));
cmd->version = __cpu_to_le16(FIO_SERVER_VER);
cmd->opcode = cpu_to_le16(opcode);
cmd->tag = cpu_to_le64(tag);
cmd->pdu_len = cpu_to_le32(pdu_len);
}
static void fio_init_net_cmd(struct fio_net_cmd *cmd, uint16_t opcode,
const void *pdu, uint32_t pdu_len, uint64_t tag)
{
__fio_init_net_cmd(cmd, opcode, pdu_len, tag);
if (pdu)
memcpy(&cmd->payload, pdu, pdu_len);
}
const char *fio_server_op(unsigned int op)
{
static char buf[32];
if (op < FIO_NET_CMD_NR)
return fio_server_ops[op];
sprintf(buf, "UNKNOWN/%d", op);
return buf;
}
static ssize_t iov_total_len(const struct iovec *iov, int count)
{
ssize_t ret = 0;
while (count--) {
ret += iov->iov_len;
iov++;
}
return ret;
}
static int fio_sendv_data(int sk, struct iovec *iov, int count)
{
ssize_t total_len = iov_total_len(iov, count);
ssize_t ret;
do {
ret = writev(sk, iov, count);
if (ret > 0) {
total_len -= ret;
if (!total_len)
break;
while (ret) {
if (ret >= iov->iov_len) {
ret -= iov->iov_len;
iov++;
continue;
}
iov->iov_base += ret;
iov->iov_len -= ret;
ret = 0;
}
} else if (!ret)
break;
else if (errno == EAGAIN || errno == EINTR)
continue;
else
break;
} while (!exit_backend);
if (!total_len)
return 0;
return 1;
}
static int fio_send_data(int sk, const void *p, unsigned int len)
{
struct iovec iov = { .iov_base = (void *) p, .iov_len = len };
assert(len <= sizeof(struct fio_net_cmd) + FIO_SERVER_MAX_FRAGMENT_PDU);
return fio_sendv_data(sk, &iov, 1);
}
static int fio_recv_data(int sk, void *buf, unsigned int len, bool wait)
{
int flags;
char *p = buf;
if (wait)
flags = MSG_WAITALL;
else
flags = OS_MSG_DONTWAIT;
do {
int ret = recv(sk, p, len, flags);
if (ret > 0) {
len -= ret;
if (!len)
break;
p += ret;
continue;
} else if (!ret)
break;
else if (errno == EAGAIN || errno == EINTR) {
if (wait)
continue;
break;
} else
break;
} while (!exit_backend);
if (!len)
return 0;
return -1;
}
static int verify_convert_cmd(struct fio_net_cmd *cmd)
{
uint16_t crc;
cmd->cmd_crc16 = le16_to_cpu(cmd->cmd_crc16);
cmd->pdu_crc16 = le16_to_cpu(cmd->pdu_crc16);
crc = fio_crc16(cmd, FIO_NET_CMD_CRC_SZ);
if (crc != cmd->cmd_crc16) {
log_err("fio: server bad crc on command (got %x, wanted %x)\n",
cmd->cmd_crc16, crc);
fprintf(f_err, "fio: server bad crc on command (got %x, wanted %x)\n",
cmd->cmd_crc16, crc);
return 1;
}
cmd->version = le16_to_cpu(cmd->version);
cmd->opcode = le16_to_cpu(cmd->opcode);
cmd->flags = le32_to_cpu(cmd->flags);
cmd->tag = le64_to_cpu(cmd->tag);
cmd->pdu_len = le32_to_cpu(cmd->pdu_len);
switch (cmd->version) {
case FIO_SERVER_VER:
break;
default:
log_err("fio: bad server cmd version %d\n", cmd->version);
fprintf(f_err, "fio: client/server version mismatch (%d != %d)\n",
cmd->version, FIO_SERVER_VER);
return 1;
}
if (cmd->pdu_len > FIO_SERVER_MAX_FRAGMENT_PDU) {
log_err("fio: command payload too large: %u\n", cmd->pdu_len);
return 1;
}
return 0;
}
/*
* Read (and defragment, if necessary) incoming commands
*/
struct fio_net_cmd *fio_net_recv_cmd(int sk, bool wait)
{
struct fio_net_cmd cmd, *tmp, *cmdret = NULL;
size_t cmd_size = 0, pdu_offset = 0;
uint16_t crc;
int ret, first = 1;
void *pdu = NULL;
do {
ret = fio_recv_data(sk, &cmd, sizeof(cmd), wait);
if (ret)
break;
/* We have a command, verify it and swap if need be */
ret = verify_convert_cmd(&cmd);
if (ret)
break;
if (first) {
/* if this is text, add room for \0 at the end */
cmd_size = sizeof(cmd) + cmd.pdu_len + 1;
assert(!cmdret);
} else
cmd_size += cmd.pdu_len;
if (cmd_size / 1024 > FIO_SERVER_MAX_CMD_MB * 1024) {
log_err("fio: cmd+pdu too large (%llu)\n", (unsigned long long) cmd_size);
ret = 1;
break;
}
tmp = realloc(cmdret, cmd_size);
if (!tmp) {
log_err("fio: server failed allocating cmd\n");
ret = 1;
break;
}
cmdret = tmp;
if (first)
memcpy(cmdret, &cmd, sizeof(cmd));
else if (cmdret->opcode != cmd.opcode) {
log_err("fio: fragment opcode mismatch (%d != %d)\n",
cmdret->opcode, cmd.opcode);
ret = 1;
break;
}
if (!cmd.pdu_len)
break;
/* There's payload, get it */
pdu = (char *) cmdret->payload + pdu_offset;
ret = fio_recv_data(sk, pdu, cmd.pdu_len, wait);
if (ret)
break;
/* Verify payload crc */
crc = fio_crc16(pdu, cmd.pdu_len);
if (crc != cmd.pdu_crc16) {
log_err("fio: server bad crc on payload ");
log_err("(got %x, wanted %x)\n", cmd.pdu_crc16, crc);
ret = 1;
break;
}
pdu_offset += cmd.pdu_len;
if (!first)
cmdret->pdu_len += cmd.pdu_len;
first = 0;
} while (cmd.flags & FIO_NET_CMD_F_MORE);
if (ret) {
free(cmdret);
cmdret = NULL;
} else if (cmdret) {
/* zero-terminate text input */
if (cmdret->pdu_len) {
if (cmdret->opcode == FIO_NET_CMD_TEXT) {
struct cmd_text_pdu *__pdu = (struct cmd_text_pdu *) cmdret->payload;
char *buf = (char *) __pdu->buf;
buf[__pdu->buf_len] = '\0';
} else if (cmdret->opcode == FIO_NET_CMD_JOB) {
struct cmd_job_pdu *__pdu = (struct cmd_job_pdu *) cmdret->payload;
char *buf = (char *) __pdu->buf;
int len = le32_to_cpu(__pdu->buf_len);
buf[len] = '\0';
}
}
/* frag flag is internal */
cmdret->flags &= ~FIO_NET_CMD_F_MORE;
}
return cmdret;
}
static void add_reply(uint64_t tag, struct flist_head *list)
{
struct fio_net_cmd_reply *reply;
reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
flist_add_tail(&reply->list, list);
}
static uint64_t alloc_reply(uint64_t tag, uint16_t opcode)
{
struct fio_net_cmd_reply *reply;
reply = calloc(1, sizeof(*reply));
INIT_FLIST_HEAD(&reply->list);
fio_gettime(&reply->ts, NULL);
reply->saved_tag = tag;
reply->opcode = opcode;
return (uintptr_t) reply;
}
static void free_reply(uint64_t tag)
{
struct fio_net_cmd_reply *reply;
reply = (struct fio_net_cmd_reply *) (uintptr_t) tag;
free(reply);
}
static void fio_net_cmd_crc_pdu(struct fio_net_cmd *cmd, const void *pdu)
{
uint32_t pdu_len;
cmd->cmd_crc16 = __cpu_to_le16(fio_crc16(cmd, FIO_NET_CMD_CRC_SZ));
pdu_len = le32_to_cpu(cmd->pdu_len);
cmd->pdu_crc16 = __cpu_to_le16(fio_crc16(pdu, pdu_len));
}
static void fio_net_cmd_crc(struct fio_net_cmd *cmd)
{
fio_net_cmd_crc_pdu(cmd, cmd->payload);
}
int fio_net_send_cmd(int fd, uint16_t opcode, const void *buf, off_t size,
uint64_t *tagptr, struct flist_head *list)
{
struct fio_net_cmd *cmd = NULL;
size_t this_len, cur_len = 0;
uint64_t tag;
int ret;
if (list) {
assert(tagptr);
tag = *tagptr = alloc_reply(*tagptr, opcode);
} else
tag = tagptr ? *tagptr : 0;
do {
this_len = size;
if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
if (!cmd || cur_len < sizeof(*cmd) + this_len) {
if (cmd)
free(cmd);
cur_len = sizeof(*cmd) + this_len;
cmd = malloc(cur_len);
}
fio_init_net_cmd(cmd, opcode, buf, this_len, tag);
if (this_len < size)
cmd->flags = __cpu_to_le32(FIO_NET_CMD_F_MORE);
fio_net_cmd_crc(cmd);
ret = fio_send_data(fd, cmd, sizeof(*cmd) + this_len);
size -= this_len;
buf += this_len;
} while (!ret && size);
if (list) {
if (ret)
free_reply(tag);
else
add_reply(tag, list);
}
if (cmd)
free(cmd);
return ret;
}
static struct sk_entry *fio_net_prep_cmd(uint16_t opcode, void *buf,
size_t size, uint64_t *tagptr,
int flags)
{
struct sk_entry *entry;
entry = smalloc(sizeof(*entry));
if (!entry)
return NULL;
INIT_FLIST_HEAD(&entry->next);
entry->opcode = opcode;
if (flags & SK_F_COPY) {
entry->buf = smalloc(size);
memcpy(entry->buf, buf, size);
} else
entry->buf = buf;
entry->size = size;
if (tagptr)
entry->tag = *tagptr;
else
entry->tag = 0;
entry->flags = flags;
return entry;
}
static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry);
static void fio_net_queue_entry(struct sk_entry *entry)
{
struct sk_out *sk_out = pthread_getspecific(sk_out_key);
if (entry->flags & SK_F_INLINE)
handle_sk_entry(sk_out, entry);
else {
sk_lock(sk_out);
flist_add_tail(&entry->list, &sk_out->list);
sk_unlock(sk_out);
fio_sem_up(&sk_out->wait);
}
}
static int fio_net_queue_cmd(uint16_t opcode, void *buf, off_t size,
uint64_t *tagptr, int flags)
{
struct sk_entry *entry;
entry = fio_net_prep_cmd(opcode, buf, size, tagptr, flags);
if (entry) {
fio_net_queue_entry(entry);
return 0;
}
return 1;
}
static int fio_net_send_simple_stack_cmd(int sk, uint16_t opcode, uint64_t tag)
{
struct fio_net_cmd cmd;
fio_init_net_cmd(&cmd, opcode, NULL, 0, tag);
fio_net_cmd_crc(&cmd);
return fio_send_data(sk, &cmd, sizeof(cmd));
}
/*
* If 'list' is non-NULL, then allocate and store the sent command for
* later verification.
*/
int fio_net_send_simple_cmd(int sk, uint16_t opcode, uint64_t tag,
struct flist_head *list)
{
int ret;
if (list)
tag = alloc_reply(tag, opcode);
ret = fio_net_send_simple_stack_cmd(sk, opcode, tag);
if (ret) {
if (list)
free_reply(tag);
return ret;
}
if (list)
add_reply(tag, list);
return 0;
}
static int fio_net_queue_quit(void)
{
dprint(FD_NET, "server: sending quit\n");
return fio_net_queue_cmd(FIO_NET_CMD_QUIT, NULL, 0, NULL, SK_F_SIMPLE);
}
int fio_net_send_quit(int sk)
{
dprint(FD_NET, "server: sending quit\n");
return fio_net_send_simple_cmd(sk, FIO_NET_CMD_QUIT, 0, NULL);
}
static int fio_net_send_ack(struct fio_net_cmd *cmd, int error, int signal)
{
struct cmd_end_pdu epdu;
uint64_t tag = 0;
if (cmd)
tag = cmd->tag;
epdu.error = __cpu_to_le32(error);
epdu.signal = __cpu_to_le32(signal);
return fio_net_queue_cmd(FIO_NET_CMD_STOP, &epdu, sizeof(epdu), &tag, SK_F_COPY);
}
static int fio_net_queue_stop(int error, int signal)
{
dprint(FD_NET, "server: sending stop (%d, %d)\n", error, signal);
return fio_net_send_ack(NULL, error, signal);
}
static void fio_server_add_fork_item(pid_t pid, struct flist_head *list)
{
struct fio_fork_item *ffi;
ffi = malloc(sizeof(*ffi));
ffi->exitval = 0;
ffi->signal = 0;
ffi->exited = 0;
ffi->pid = pid;
flist_add_tail(&ffi->list, list);
}
static void fio_server_add_conn_pid(struct flist_head *conn_list, pid_t pid)
{
dprint(FD_NET, "server: forked off connection job (pid=%u)\n", (int) pid);
fio_server_add_fork_item(pid, conn_list);
}
static void fio_server_add_job_pid(struct flist_head *job_list, pid_t pid)
{
dprint(FD_NET, "server: forked off job job (pid=%u)\n", (int) pid);
fio_server_add_fork_item(pid, job_list);
}
static void fio_server_check_fork_item(struct fio_fork_item *ffi)
{
int ret, status;
ret = waitpid(ffi->pid, &status, WNOHANG);
if (ret < 0) {
if (errno == ECHILD) {
log_err("fio: connection pid %u disappeared\n", (int) ffi->pid);
ffi->exited = 1;
} else
log_err("fio: waitpid: %s\n", strerror(errno));
} else if (ret == ffi->pid) {
if (WIFSIGNALED(status)) {
ffi->signal = WTERMSIG(status);
ffi->exited = 1;
}
if (WIFEXITED(status)) {
if (WEXITSTATUS(status))
ffi->exitval = WEXITSTATUS(status);
ffi->exited = 1;
}
}
}
static void fio_server_fork_item_done(struct fio_fork_item *ffi, bool stop)
{
dprint(FD_NET, "pid %u exited, sig=%u, exitval=%d\n", (int) ffi->pid, ffi->signal, ffi->exitval);
/*
* Fold STOP and QUIT...
*/
if (stop) {
fio_net_queue_stop(ffi->exitval, ffi->signal);
fio_net_queue_quit();
}
flist_del(&ffi->list);
free(ffi);
}
static void fio_server_check_fork_items(struct flist_head *list, bool stop)
{
struct flist_head *entry, *tmp;
struct fio_fork_item *ffi;
flist_for_each_safe(entry, tmp, list) {
ffi = flist_entry(entry, struct fio_fork_item, list);
fio_server_check_fork_item(ffi);
if (ffi->exited)
fio_server_fork_item_done(ffi, stop);
}
}
static void fio_server_check_jobs(struct flist_head *job_list)
{
fio_server_check_fork_items(job_list, true);
}
static void fio_server_check_conns(struct flist_head *conn_list)
{
fio_server_check_fork_items(conn_list, false);
}
static int handle_load_file_cmd(struct fio_net_cmd *cmd)
{
struct cmd_load_file_pdu *pdu = (struct cmd_load_file_pdu *) cmd->payload;
void *file_name = pdu->file;
struct cmd_start_pdu spdu;
dprint(FD_NET, "server: loading local file %s\n", (char *) file_name);
pdu->name_len = le16_to_cpu(pdu->name_len);
pdu->client_type = le16_to_cpu(pdu->client_type);
if (parse_jobs_ini(file_name, 0, 0, pdu->client_type)) {
fio_net_queue_quit();
return -1;
}
spdu.jobs = cpu_to_le32(thread_number);
spdu.stat_outputs = cpu_to_le32(stat_number);
fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
return 0;
}
static int handle_run_cmd(struct sk_out *sk_out, struct flist_head *job_list,
struct fio_net_cmd *cmd)
{
pid_t pid;
int ret;
sk_out_assign(sk_out);
fio_time_init();
set_genesis_time();
pid = fork();
if (pid) {
fio_server_add_job_pid(job_list, pid);
return 0;
}
ret = fio_backend(sk_out);
free_threads_shm();
sk_out_drop();
_exit(ret);
}
static int handle_job_cmd(struct fio_net_cmd *cmd)
{
struct cmd_job_pdu *pdu = (struct cmd_job_pdu *) cmd->payload;
void *buf = pdu->buf;
struct cmd_start_pdu spdu;
pdu->buf_len = le32_to_cpu(pdu->buf_len);
pdu->client_type = le32_to_cpu(pdu->client_type);
if (parse_jobs_ini(buf, 1, 0, pdu->client_type)) {
fio_net_queue_quit();
return -1;
}
spdu.jobs = cpu_to_le32(thread_number);
spdu.stat_outputs = cpu_to_le32(stat_number);
fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
return 0;
}
static int handle_jobline_cmd(struct fio_net_cmd *cmd)
{
void *pdu = cmd->payload;
struct cmd_single_line_pdu *cslp;
struct cmd_line_pdu *clp;
unsigned long offset;
struct cmd_start_pdu spdu;
char **argv;
int i;
clp = pdu;
clp->lines = le16_to_cpu(clp->lines);
clp->client_type = le16_to_cpu(clp->client_type);
argv = malloc(clp->lines * sizeof(char *));
offset = sizeof(*clp);
dprint(FD_NET, "server: %d command line args\n", clp->lines);
for (i = 0; i < clp->lines; i++) {
cslp = pdu + offset;
argv[i] = (char *) cslp->text;
offset += sizeof(*cslp) + le16_to_cpu(cslp->len);
dprint(FD_NET, "server: %d: %s\n", i, argv[i]);
}
if (parse_cmd_line(clp->lines, argv, clp->client_type)) {
fio_net_queue_quit();
free(argv);
return -1;
}
free(argv);
spdu.jobs = cpu_to_le32(thread_number);
spdu.stat_outputs = cpu_to_le32(stat_number);
fio_net_queue_cmd(FIO_NET_CMD_START, &spdu, sizeof(spdu), NULL, SK_F_COPY);
return 0;
}
static int handle_probe_cmd(struct fio_net_cmd *cmd)
{
struct cmd_client_probe_pdu *pdu = (struct cmd_client_probe_pdu *) cmd->payload;
uint64_t tag = cmd->tag;
struct cmd_probe_reply_pdu probe = {
#ifdef CONFIG_BIG_ENDIAN
.bigendian = 1,
#endif
.os = FIO_OS,
.arch = FIO_ARCH,
.bpp = sizeof(void *),
.cpus = __cpu_to_le32(cpus_online()),
};
dprint(FD_NET, "server: sending probe reply\n");
strcpy(me, (char *) pdu->server);
gethostname((char *) probe.hostname, sizeof(probe.hostname));
strncpy((char *) probe.fio_version, fio_version_string, sizeof(probe.fio_version) - 1);
/*
* If the client supports compression and we do too, then enable it
*/
if (has_zlib && le64_to_cpu(pdu->flags) & FIO_PROBE_FLAG_ZLIB) {
probe.flags = __cpu_to_le64(FIO_PROBE_FLAG_ZLIB);
use_zlib = 1;
} else {
probe.flags = 0;
use_zlib = 0;
}
return fio_net_queue_cmd(FIO_NET_CMD_PROBE, &probe, sizeof(probe), &tag, SK_F_COPY);
}
static int handle_send_eta_cmd(struct fio_net_cmd *cmd)
{
struct jobs_eta *je;
uint64_t tag = cmd->tag;
size_t size;
int i;
dprint(FD_NET, "server sending status\n");
/*
* Fake ETA return if we don't have a local one, otherwise the client
* will end up timing out waiting for a response to the ETA request
*/
je = get_jobs_eta(true, &size);
if (!je) {
size = sizeof(*je);
je = calloc(1, size);
} else {
je->nr_running = cpu_to_le32(je->nr_running);
je->nr_ramp = cpu_to_le32(je->nr_ramp);
je->nr_pending = cpu_to_le32(je->nr_pending);
je->nr_setting_up = cpu_to_le32(je->nr_setting_up);
je->files_open = cpu_to_le32(je->files_open);
for (i = 0; i < DDIR_RWDIR_CNT; i++) {
je->m_rate[i] = cpu_to_le64(je->m_rate[i]);
je->t_rate[i] = cpu_to_le64(je->t_rate[i]);
je->m_iops[i] = cpu_to_le32(je->m_iops[i]);
je->t_iops[i] = cpu_to_le32(je->t_iops[i]);
je->rate[i] = cpu_to_le64(je->rate[i]);
je->iops[i] = cpu_to_le32(je->iops[i]);
}
je->elapsed_sec = cpu_to_le64(je->elapsed_sec);
je->eta_sec = cpu_to_le64(je->eta_sec);
je->nr_threads = cpu_to_le32(je->nr_threads);
je->is_pow2 = cpu_to_le32(je->is_pow2);
je->unit_base = cpu_to_le32(je->unit_base);
}
fio_net_queue_cmd(FIO_NET_CMD_ETA, je, size, &tag, SK_F_FREE);
return 0;
}
static int send_update_job_reply(uint64_t __tag, int error)
{
uint64_t tag = __tag;
uint32_t pdu_error;
pdu_error = __cpu_to_le32(error);
return fio_net_queue_cmd(FIO_NET_CMD_UPDATE_JOB, &pdu_error, sizeof(pdu_error), &tag, SK_F_COPY);
}
static int handle_update_job_cmd(struct fio_net_cmd *cmd)
{
struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
struct thread_data *td;
uint32_t tnumber;
tnumber = le32_to_cpu(pdu->thread_number);
dprint(FD_NET, "server: updating options for job %u\n", tnumber);
if (!tnumber || tnumber > thread_number) {
send_update_job_reply(cmd->tag, ENODEV);
return 0;
}
td = &threads[tnumber - 1];
convert_thread_options_to_cpu(&td->o, &pdu->top);
send_update_job_reply(cmd->tag, 0);
return 0;
}
static int handle_trigger_cmd(struct fio_net_cmd *cmd, struct flist_head *job_list)
{
struct cmd_vtrigger_pdu *pdu = (struct cmd_vtrigger_pdu *) cmd->payload;
char *buf = (char *) pdu->cmd;
struct all_io_list *rep;
size_t sz;
pdu->len = le16_to_cpu(pdu->len);
buf[pdu->len] = '\0';
rep = get_all_io_list(IO_LIST_ALL, &sz);
if (!rep) {
struct all_io_list state;
state.threads = cpu_to_le64((uint64_t) 0);
fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, &state, sizeof(state), NULL, SK_F_COPY | SK_F_INLINE);
} else
fio_net_queue_cmd(FIO_NET_CMD_VTRIGGER, rep, sz, NULL, SK_F_FREE | SK_F_INLINE);
fio_terminate_threads(TERMINATE_ALL);
fio_server_check_jobs(job_list);
exec_trigger(buf);
return 0;
}
static int handle_command(struct sk_out *sk_out, struct flist_head *job_list,
struct fio_net_cmd *cmd)
{
int ret;
dprint(FD_NET, "server: got op [%s], pdu=%u, tag=%llx\n",
fio_server_op(cmd->opcode), cmd->pdu_len,
(unsigned long long) cmd->tag);
switch (cmd->opcode) {
case FIO_NET_CMD_QUIT:
fio_terminate_threads(TERMINATE_ALL);
ret = 0;
break;
case FIO_NET_CMD_EXIT:
exit_backend = true;
return -1;
case FIO_NET_CMD_LOAD_FILE:
ret = handle_load_file_cmd(cmd);
break;
case FIO_NET_CMD_JOB:
ret = handle_job_cmd(cmd);
break;
case FIO_NET_CMD_JOBLINE:
ret = handle_jobline_cmd(cmd);
break;
case FIO_NET_CMD_PROBE:
ret = handle_probe_cmd(cmd);
break;
case FIO_NET_CMD_SEND_ETA:
ret = handle_send_eta_cmd(cmd);
break;
case FIO_NET_CMD_RUN:
ret = handle_run_cmd(sk_out, job_list, cmd);
break;
case FIO_NET_CMD_UPDATE_JOB:
ret = handle_update_job_cmd(cmd);
break;
case FIO_NET_CMD_VTRIGGER:
ret = handle_trigger_cmd(cmd, job_list);
break;
case FIO_NET_CMD_SENDFILE: {
struct cmd_sendfile_reply *in;
struct cmd_reply *rep;
rep = (struct cmd_reply *) (uintptr_t) cmd->tag;
in = (struct cmd_sendfile_reply *) cmd->payload;
in->size = le32_to_cpu(in->size);
in->error = le32_to_cpu(in->error);
if (in->error) {
ret = 1;
rep->error = in->error;
} else {
ret = 0;
rep->data = smalloc(in->size);
if (!rep->data) {
ret = 1;
rep->error = ENOMEM;
} else {
rep->size = in->size;
memcpy(rep->data, in->data, in->size);
}
}
fio_sem_up(&rep->lock);
break;
}
default:
log_err("fio: unknown opcode: %s\n", fio_server_op(cmd->opcode));
ret = 1;
}
return ret;
}
/*
* Send a command with a separate PDU, not inlined in the command
*/
static int fio_send_cmd_ext_pdu(int sk, uint16_t opcode, const void *buf,
off_t size, uint64_t tag, uint32_t flags)
{
struct fio_net_cmd cmd;
struct iovec iov[2];
size_t this_len;
int ret;
iov[0].iov_base = (void *) &cmd;
iov[0].iov_len = sizeof(cmd);
do {
uint32_t this_flags = flags;
this_len = size;
if (this_len > FIO_SERVER_MAX_FRAGMENT_PDU)
this_len = FIO_SERVER_MAX_FRAGMENT_PDU;
if (this_len < size)
this_flags |= FIO_NET_CMD_F_MORE;
__fio_init_net_cmd(&cmd, opcode, this_len, tag);
cmd.flags = __cpu_to_le32(this_flags);
fio_net_cmd_crc_pdu(&cmd, buf);
iov[1].iov_base = (void *) buf;
iov[1].iov_len = this_len;
ret = fio_sendv_data(sk, iov, 2);
size -= this_len;
buf += this_len;
} while (!ret && size);
return ret;
}
static void finish_entry(struct sk_entry *entry)
{
if (entry->flags & SK_F_FREE)
free(entry->buf);
else if (entry->flags & SK_F_COPY)
sfree(entry->buf);
sfree(entry);
}
static void entry_set_flags(struct sk_entry *entry, struct flist_head *list,
unsigned int *flags)
{
if (!flist_empty(list))
*flags = FIO_NET_CMD_F_MORE;
else
*flags = 0;
}
static int send_vec_entry(struct sk_out *sk_out, struct sk_entry *first)
{
unsigned int flags;
int ret;
entry_set_flags(first, &first->next, &flags);
ret = fio_send_cmd_ext_pdu(sk_out->sk, first->opcode, first->buf,
first->size, first->tag, flags);
while (!flist_empty(&first->next)) {
struct sk_entry *next;
next = flist_first_entry(&first->next, struct sk_entry, list);
flist_del_init(&next->list);
entry_set_flags(next, &first->next, &flags);
ret += fio_send_cmd_ext_pdu(sk_out->sk, next->opcode, next->buf,
next->size, next->tag, flags);
finish_entry(next);
}
return ret;
}
static int handle_sk_entry(struct sk_out *sk_out, struct sk_entry *entry)
{
int ret;
fio_sem_down(&sk_out->xmit);
if (entry->flags & SK_F_VEC)
ret = send_vec_entry(sk_out, entry);
else if (entry->flags & SK_F_SIMPLE) {
ret = fio_net_send_simple_cmd(sk_out->sk, entry->opcode,
entry->tag, NULL);
} else {
ret = fio_net_send_cmd(sk_out->sk, entry->opcode, entry->buf,
entry->size, &entry->tag, NULL);
}
fio_sem_up(&sk_out->xmit);
if (ret)
log_err("fio: failed handling cmd %s\n", fio_server_op(entry->opcode));
finish_entry(entry);
return ret;
}
static int handle_xmits(struct sk_out *sk_out)
{
struct sk_entry *entry;
FLIST_HEAD(list);
int ret = 0;
sk_lock(sk_out);
if (flist_empty(&sk_out->list)) {
sk_unlock(sk_out);
return 0;
}
flist_splice_init(&sk_out->list, &list);
sk_unlock(sk_out);
while (!flist_empty(&list)) {
entry = flist_entry(list.next, struct sk_entry, list);
flist_del(&entry->list);
ret += handle_sk_entry(sk_out, entry);
}
return ret;
}
static int handle_connection(struct sk_out *sk_out)
{
struct fio_net_cmd *cmd = NULL;
FLIST_HEAD(job_list);
int ret = 0;
reset_fio_state();
/* read forever */
while (!exit_backend) {
struct pollfd pfd = {
.fd = sk_out->sk,
.events = POLLIN,
};
do {
int timeout = 1000;
if (!flist_empty(&job_list))
timeout = 100;
handle_xmits(sk_out);
ret = poll(&pfd, 1, 0);
if (ret < 0) {
if (errno == EINTR)
break;
log_err("fio: poll: %s\n", strerror(errno));
break;
} else if (!ret) {
fio_server_check_jobs(&job_list);
fio_sem_down_timeout(&sk_out->wait, timeout);
continue;
}
if (pfd.revents & POLLIN)
break;
if (pfd.revents & (POLLERR|POLLHUP)) {
ret = 1;
break;
}
} while (!exit_backend);
fio_server_check_jobs(&job_list);
if (ret < 0)
break;
cmd = fio_net_recv_cmd(sk_out->sk, true);
if (!cmd) {
ret = -1;
break;
}
ret = handle_command(sk_out, &job_list, cmd);
if (ret)
break;
free(cmd);
cmd = NULL;
}
if (cmd)
free(cmd);
handle_xmits(sk_out);
close(sk_out->sk);
sk_out->sk = -1;
__sk_out_drop(sk_out);
_exit(ret);
}
/* get the address on this host bound by the input socket,
* whether it is ipv6 or ipv4 */
static int get_my_addr_str(int sk)
{
struct sockaddr_in6 myaddr6 = { 0, };
struct sockaddr_in myaddr4 = { 0, };
struct sockaddr *sockaddr_p;
char *net_addr;
socklen_t len;
int ret;
if (use_ipv6) {
len = sizeof(myaddr6);
sockaddr_p = (struct sockaddr * )&myaddr6;
net_addr = (char * )&myaddr6.sin6_addr;
} else {
len = sizeof(myaddr4);
sockaddr_p = (struct sockaddr * )&myaddr4;
net_addr = (char * )&myaddr4.sin_addr;
}
ret = getsockname(sk, sockaddr_p, &len);
if (ret) {
log_err("fio: getsockname: %s\n", strerror(errno));
return -1;
}
if (!inet_ntop(use_ipv6?AF_INET6:AF_INET, net_addr, client_sockaddr_str, INET6_ADDRSTRLEN - 1)) {
log_err("inet_ntop: failed to convert addr to string\n");
return -1;
}
dprint(FD_NET, "fio server bound to addr %s\n", client_sockaddr_str);
return 0;
}
static int accept_loop(int listen_sk)
{
struct sockaddr_in addr;
struct sockaddr_in6 addr6;
socklen_t len = use_ipv6 ? sizeof(addr6) : sizeof(addr);
struct pollfd pfd;
int ret = 0, sk, exitval = 0;
FLIST_HEAD(conn_list);
dprint(FD_NET, "server enter accept loop\n");
fio_set_fd_nonblocking(listen_sk, "server");
while (!exit_backend) {
struct sk_out *sk_out;
const char *from;
char buf[64];
pid_t pid;
pfd.fd = listen_sk;
pfd.events = POLLIN;
do {
int timeout = 1000;
if (!flist_empty(&conn_list))
timeout = 100;
ret = poll(&pfd, 1, timeout);
if (ret < 0) {
if (errno == EINTR)
break;
log_err("fio: poll: %s\n", strerror(errno));
break;
} else if (!ret) {
fio_server_check_conns(&conn_list);
continue;
}
if (pfd.revents & POLLIN)
break;
} while (!exit_backend);
fio_server_check_conns(&conn_list);
if (exit_backend || ret < 0)
break;
if (use_ipv6)
sk = accept(listen_sk, (struct sockaddr *) &addr6, &len);
else
sk = accept(listen_sk, (struct sockaddr *) &addr, &len);
if (sk < 0) {
log_err("fio: accept: %s\n", strerror(errno));
return -1;
}
if (use_ipv6)
from = inet_ntop(AF_INET6, (struct sockaddr *) &addr6.sin6_addr, buf, sizeof(buf));
else
from = inet_ntop(AF_INET, (struct sockaddr *) &addr.sin_addr, buf, sizeof(buf));
dprint(FD_NET, "server: connect from %s\n", from);
sk_out = scalloc(1, sizeof(*sk_out));
if (!sk_out) {
close(sk);
return -1;
}
sk_out->sk = sk;
INIT_FLIST_HEAD(&sk_out->list);
__fio_sem_init(&sk_out->lock, FIO_SEM_UNLOCKED);
__fio_sem_init(&sk_out->wait, FIO_SEM_LOCKED);
__fio_sem_init(&sk_out->xmit, FIO_SEM_UNLOCKED);
pid = fork();
if (pid) {
close(sk);
fio_server_add_conn_pid(&conn_list, pid);
continue;
}
/* if error, it's already logged, non-fatal */
get_my_addr_str(sk);
/*
* Assign sk_out here, it'll be dropped in handle_connection()
* since that function calls _exit() when done
*/
sk_out_assign(sk_out);
handle_connection(sk_out);
}
return exitval;
}
int fio_server_text_output(int level, const char *buf, size_t len)
{
struct sk_out *sk_out = pthread_getspecific(sk_out_key);
struct cmd_text_pdu *pdu;
unsigned int tlen;
struct timeval tv;
if (!sk_out || sk_out->sk == -1)
return -1;
tlen = sizeof(*pdu) + len;
pdu = malloc(tlen);
pdu->level = __cpu_to_le32(level);
pdu->buf_len = __cpu_to_le32(len);
gettimeofday(&tv, NULL);
pdu->log_sec = __cpu_to_le64(tv.tv_sec);
pdu->log_usec = __cpu_to_le64(tv.tv_usec);
memcpy(pdu->buf, buf, len);
fio_net_queue_cmd(FIO_NET_CMD_TEXT, pdu, tlen, NULL, SK_F_COPY);
free(pdu);
return len;
}
static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
{
dst->max_val = cpu_to_le64(src->max_val);
dst->min_val = cpu_to_le64(src->min_val);
dst->samples = cpu_to_le64(src->samples);
/*
* Encode to IEEE 754 for network transfer
*/
dst->mean.u.i = cpu_to_le64(fio_double_to_uint64(src->mean.u.f));
dst->S.u.i = cpu_to_le64(fio_double_to_uint64(src->S.u.f));
}
static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
{
int i;
for (i = 0; i < DDIR_RWDIR_CNT; i++) {
dst->max_run[i] = cpu_to_le64(src->max_run[i]);
dst->min_run[i] = cpu_to_le64(src->min_run[i]);
dst->max_bw[i] = cpu_to_le64(src->max_bw[i]);
dst->min_bw[i] = cpu_to_le64(src->min_bw[i]);
dst->iobytes[i] = cpu_to_le64(src->iobytes[i]);
dst->agg[i] = cpu_to_le64(src->agg[i]);
}
dst->kb_base = cpu_to_le32(src->kb_base);
dst->unit_base = cpu_to_le32(src->unit_base);
dst->groupid = cpu_to_le32(src->groupid);
dst->unified_rw_rep = cpu_to_le32(src->unified_rw_rep);
dst->sig_figs = cpu_to_le32(src->sig_figs);
}
/*
* Send a CMD_TS, which packs struct thread_stat and group_run_stats
* into a single payload.
*/
void fio_server_send_ts(struct thread_stat *ts, struct group_run_stats *rs)
{
struct cmd_ts_pdu p;
int i, j;
void *ss_buf;
uint64_t *ss_iops, *ss_bw;
dprint(FD_NET, "server sending end stats\n");
memset(&p, 0, sizeof(p));
strncpy(p.ts.name, ts->name, FIO_JOBNAME_SIZE - 1);
strncpy(p.ts.verror, ts->verror, FIO_VERROR_SIZE - 1);
strncpy(p.ts.description, ts->description, FIO_JOBDESC_SIZE - 1);
p.ts.error = cpu_to_le32(ts->error);
p.ts.thread_number = cpu_to_le32(ts->thread_number);
p.ts.groupid = cpu_to_le32(ts->groupid);
p.ts.pid = cpu_to_le32(ts->pid);
p.ts.members = cpu_to_le32(ts->members);
p.ts.unified_rw_rep = cpu_to_le32(ts->unified_rw_rep);
for (i = 0; i < DDIR_RWDIR_CNT; i++) {
convert_io_stat(&p.ts.clat_stat[i], &ts->clat_stat[i]);
convert_io_stat(&p.ts.slat_stat[i], &ts->slat_stat[i]);
convert_io_stat(&p.ts.lat_stat[i], &ts->lat_stat[i]);
convert_io_stat(&p.ts.bw_stat[i], &ts->bw_stat[i]);
convert_io_stat(&p.ts.iops_stat[i], &ts->iops_stat[i]);
}
p.ts.usr_time = cpu_to_le64(ts->usr_time);
p.ts.sys_time = cpu_to_le64(ts->sys_time);
p.ts.ctx = cpu_to_le64(ts->ctx);
p.ts.minf = cpu_to_le64(ts->minf);
p.ts.majf = cpu_to_le64(ts->majf);
p.ts.clat_percentiles = cpu_to_le32(ts->clat_percentiles);
p.ts.lat_percentiles = cpu_to_le32(ts->lat_percentiles);
p.ts.percentile_precision = cpu_to_le64(ts->percentile_precision);
for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
fio_fp64_t *src = &ts->percentile_list[i];
fio_fp64_t *dst = &p.ts.percentile_list[i];
dst->u.i = cpu_to_le64(fio_double_to_uint64(src->u.f));
}
for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
p.ts.io_u_map[i] = cpu_to_le64(ts->io_u_map[i]);
p.ts.io_u_submit[i] = cpu_to_le64(ts->io_u_submit[i]);
p.ts.io_u_complete[i] = cpu_to_le64(ts->io_u_complete[i]);
}
for (i = 0; i < FIO_IO_U_LAT_N_NR; i++)
p.ts.io_u_lat_n[i] = cpu_to_le64(ts->io_u_lat_n[i]);
for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
p.ts.io_u_lat_u[i] = cpu_to_le64(ts->io_u_lat_u[i]);
for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
p.ts.io_u_lat_m[i] = cpu_to_le64(ts->io_u_lat_m[i]);
for (i = 0; i < DDIR_RWDIR_CNT; i++)
for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
p.ts.io_u_plat[i][j] = cpu_to_le64(ts->io_u_plat[i][j]);
for (i = 0; i < DDIR_RWDIR_CNT; i++) {
p.ts.total_io_u[i] = cpu_to_le64(ts->total_io_u[i]);
p.ts.short_io_u[i] = cpu_to_le64(ts->short_io_u[i]);
p.ts.drop_io_u[i] = cpu_to_le64(ts->drop_io_u[i]);
}
p.ts.total_submit = cpu_to_le64(ts->total_submit);
p.ts.total_complete = cpu_to_le64(ts->total_complete);
for (i = 0; i < DDIR_RWDIR_CNT; i++) {
p.ts.io_bytes[i] = cpu_to_le64(ts->io_bytes[i]);
p.ts.runtime[i] = cpu_to_le64(ts->runtime[i]);
}
p.ts.total_run_time = cpu_to_le64(ts->total_run_time);
p.ts.continue_on_error = cpu_to_le16(ts->continue_on_error);
p.ts.total_err_count = cpu_to_le64(ts->total_err_count);
p.ts.first_error = cpu_to_le32(ts->first_error);
p.ts.kb_base = cpu_to_le32(ts->kb_base);
p.ts.unit_base = cpu_to_le32(ts->unit_base);
p.ts.latency_depth = cpu_to_le32(ts->latency_depth);
p.ts.latency_target = cpu_to_le64(ts->latency_target);
p.ts.latency_window = cpu_to_le64(ts->latency_window);
p.ts.latency_percentile.u.i = cpu_to_le64(fio_double_to_uint64(ts->latency_percentile.u.f));
p.ts.sig_figs = cpu_to_le32(ts->sig_figs);
p.ts.nr_block_infos = cpu_to_le64(ts->nr_block_infos);
for (i = 0; i < p.ts.nr_block_infos; i++)
p.ts.block_infos[i] = cpu_to_le32(ts->block_infos[i]);
p.ts.ss_dur = cpu_to_le64(ts->ss_dur);
p.ts.ss_state = cpu_to_le32(ts->ss_state);
p.ts.ss_head = cpu_to_le32(ts->ss_head);
p.ts.ss_limit.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_limit.u.f));
p.ts.ss_slope.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_slope.u.f));
p.ts.ss_deviation.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_deviation.u.f));
p.ts.ss_criterion.u.i = cpu_to_le64(fio_double_to_uint64(ts->ss_criterion.u.f));
convert_gs(&p.rs, rs);
dprint(FD_NET, "ts->ss_state = %d\n", ts->ss_state);
if (ts->ss_state & FIO_SS_DATA) {
dprint(FD_NET, "server sending steadystate ring buffers\n");
ss_buf = malloc(sizeof(p) + 2*ts->ss_dur*sizeof(uint64_t));
memcpy(ss_buf, &p, sizeof(p));
ss_iops = (uint64_t *) ((struct cmd_ts_pdu *)ss_buf + 1);
ss_bw = ss_iops + (int) ts->ss_dur;
for (i = 0; i < ts->ss_dur; i++) {
ss_iops[i] = cpu_to_le64(ts->ss_iops_data[i]);
ss_bw[i] = cpu_to_le64(ts->ss_bw_data[i]);
}
fio_net_queue_cmd(FIO_NET_CMD_TS, ss_buf, sizeof(p) + 2*ts->ss_dur*sizeof(uint64_t), NULL, SK_F_COPY);
free(ss_buf);
}
else
fio_net_queue_cmd(FIO_NET_CMD_TS, &p, sizeof(p), NULL, SK_F_COPY);
}
void fio_server_send_gs(struct group_run_stats *rs)
{
struct group_run_stats gs;
dprint(FD_NET, "server sending group run stats\n");
convert_gs(&gs, rs);
fio_net_queue_cmd(FIO_NET_CMD_GS, &gs, sizeof(gs), NULL, SK_F_COPY);
}
void fio_server_send_job_options(struct flist_head *opt_list,
unsigned int gid)
{
struct cmd_job_option pdu;
struct flist_head *entry;
if (flist_empty(opt_list))
return;
flist_for_each(entry, opt_list) {
struct print_option *p;
size_t len;
p = flist_entry(entry, struct print_option, list);
memset(&pdu, 0, sizeof(pdu));
if (gid == -1U) {
pdu.global = __cpu_to_le16(1);
pdu.groupid = 0;
} else {
pdu.global = 0;
pdu.groupid = cpu_to_le32(gid);
}
len = strlen(p->name);
if (len >= sizeof(pdu.name)) {
len = sizeof(pdu.name) - 1;
pdu.truncated = __cpu_to_le16(1);
}
memcpy(pdu.name, p->name, len);
if (p->value) {
len = strlen(p->value);
if (len >= sizeof(pdu.value)) {
len = sizeof(pdu.value) - 1;
pdu.truncated = __cpu_to_le16(1);
}
memcpy(pdu.value, p->value, len);
}
fio_net_queue_cmd(FIO_NET_CMD_JOB_OPT, &pdu, sizeof(pdu), NULL, SK_F_COPY);
}
}
static void convert_agg(struct disk_util_agg *dst, struct disk_util_agg *src)
{
int i;
for (i = 0; i < 2; i++) {
dst->ios[i] = cpu_to_le64(src->ios[i]);
dst->merges[i] = cpu_to_le64(src->merges[i]);
dst->sectors[i] = cpu_to_le64(src->sectors[i]);
dst->ticks[i] = cpu_to_le64(src->ticks[i]);
}
dst->io_ticks = cpu_to_le64(src->io_ticks);
dst->time_in_queue = cpu_to_le64(src->time_in_queue);
dst->slavecount = cpu_to_le32(src->slavecount);
dst->max_util.u.i = cpu_to_le64(fio_double_to_uint64(src->max_util.u.f));
}
static void convert_dus(struct disk_util_stat *dst, struct disk_util_stat *src)
{
int i;
dst->name[FIO_DU_NAME_SZ - 1] = '\0';
strncpy((char *) dst->name, (char *) src->name, FIO_DU_NAME_SZ - 1);
for (i = 0; i < 2; i++) {
dst->s.ios[i] = cpu_to_le64(src->s.ios[i]);
dst->s.merges[i] = cpu_to_le64(src->s.merges[i]);
dst->s.sectors[i] = cpu_to_le64(src->s.sectors[i]);
dst->s.ticks[i] = cpu_to_le64(src->s.ticks[i]);
}
dst->s.io_ticks = cpu_to_le64(src->s.io_ticks);
dst->s.time_in_queue = cpu_to_le64(src->s.time_in_queue);
dst->s.msec = cpu_to_le64(src->s.msec);
}
void fio_server_send_du(void)
{
struct disk_util *du;
struct flist_head *entry;
struct cmd_du_pdu pdu;
dprint(FD_NET, "server: sending disk_util %d\n", !flist_empty(&disk_list));
memset(&pdu, 0, sizeof(pdu));
flist_for_each(entry, &disk_list) {
du = flist_entry(entry, struct disk_util, list);
convert_dus(&pdu.dus, &du->dus);
convert_agg(&pdu.agg, &du->agg);
fio_net_queue_cmd(FIO_NET_CMD_DU, &pdu, sizeof(pdu), NULL, SK_F_COPY);
}
}
#ifdef CONFIG_ZLIB
static inline void __fio_net_prep_tail(z_stream *stream, void *out_pdu,
struct sk_entry **last_entry,
struct sk_entry *first)
{
unsigned int this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream->avail_out;
*last_entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE);
if (*last_entry)
flist_add_tail(&(*last_entry)->list, &first->next);
}
/*
* Deflates the next input given, creating as many new packets in the
* linked list as necessary.
*/
static int __deflate_pdu_buffer(void *next_in, unsigned int next_sz, void **out_pdu,
struct sk_entry **last_entry, z_stream *stream,
struct sk_entry *first)
{
int ret;
stream->next_in = next_in;
stream->avail_in = next_sz;
do {
if (!stream->avail_out) {
__fio_net_prep_tail(stream, *out_pdu, last_entry, first);
if (*last_entry == NULL)
return 1;
*out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
stream->next_out = *out_pdu;
}
ret = deflate(stream, Z_BLOCK);
if (ret < 0) {
free(*out_pdu);
return 1;
}
} while (stream->avail_in);
return 0;
}
static int __fio_append_iolog_gz_hist(struct sk_entry *first, struct io_log *log,
struct io_logs *cur_log, z_stream *stream)
{
struct sk_entry *entry;
void *out_pdu;
int ret, i, j;
int sample_sz = log_entry_sz(log);
out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
stream->next_out = out_pdu;
for (i = 0; i < cur_log->nr_samples; i++) {
struct io_sample *s;
struct io_u_plat_entry *cur_plat_entry, *prev_plat_entry;
uint64_t *cur_plat, *prev_plat;
s = get_sample(log, cur_log, i);
ret = __deflate_pdu_buffer(s, sample_sz, &out_pdu, &entry, stream, first);
if (ret)
return ret;
/* Do the subtraction on server side so that client doesn't have to
* reconstruct our linked list from packets.
*/
cur_plat_entry = s->data.plat_entry;
prev_plat_entry = flist_first_entry(&cur_plat_entry->list, struct io_u_plat_entry, list);
cur_plat = cur_plat_entry->io_u_plat;
prev_plat = prev_plat_entry->io_u_plat;
for (j = 0; j < FIO_IO_U_PLAT_NR; j++) {
cur_plat[j] -= prev_plat[j];
}
flist_del(&prev_plat_entry->list);
free(prev_plat_entry);
ret = __deflate_pdu_buffer(cur_plat_entry, sizeof(*cur_plat_entry),
&out_pdu, &entry, stream, first);
if (ret)
return ret;
}
__fio_net_prep_tail(stream, out_pdu, &entry, first);
return entry == NULL;
}
static int __fio_append_iolog_gz(struct sk_entry *first, struct io_log *log,
struct io_logs *cur_log, z_stream *stream)
{
unsigned int this_len;
void *out_pdu;
int ret;
if (log->log_type == IO_LOG_TYPE_HIST)
return __fio_append_iolog_gz_hist(first, log, cur_log, stream);
stream->next_in = (void *) cur_log->log;
stream->avail_in = cur_log->nr_samples * log_entry_sz(log);
do {
struct sk_entry *entry;
/*
* Dirty - since the log is potentially huge, compress it into
* FIO_SERVER_MAX_FRAGMENT_PDU chunks and let the receiving
* side defragment it.
*/
out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
stream->avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
stream->next_out = out_pdu;
ret = deflate(stream, Z_BLOCK);
/* may be Z_OK, or Z_STREAM_END */
if (ret < 0) {
free(out_pdu);
return 1;
}
this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream->avail_out;
entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE);
if (!entry) {
free(out_pdu);
return 1;
}
flist_add_tail(&entry->list, &first->next);
} while (stream->avail_in);
return 0;
}
static int fio_append_iolog_gz(struct sk_entry *first, struct io_log *log)
{
z_stream stream = {
.zalloc = Z_NULL,
.zfree = Z_NULL,
.opaque = Z_NULL,
};
int ret = 0;
if (deflateInit(&stream, Z_DEFAULT_COMPRESSION) != Z_OK)
return 1;
while (!flist_empty(&log->io_logs)) {
struct io_logs *cur_log;
cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
flist_del_init(&cur_log->list);
ret = __fio_append_iolog_gz(first, log, cur_log, &stream);
if (ret)
break;
}
ret = deflate(&stream, Z_FINISH);
while (ret != Z_STREAM_END) {
struct sk_entry *entry;
unsigned int this_len;
void *out_pdu;
out_pdu = malloc(FIO_SERVER_MAX_FRAGMENT_PDU);
stream.avail_out = FIO_SERVER_MAX_FRAGMENT_PDU;
stream.next_out = out_pdu;
ret = deflate(&stream, Z_FINISH);
/* may be Z_OK, or Z_STREAM_END */
if (ret < 0) {
free(out_pdu);
break;
}
this_len = FIO_SERVER_MAX_FRAGMENT_PDU - stream.avail_out;
entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, out_pdu, this_len,
NULL, SK_F_VEC | SK_F_INLINE | SK_F_FREE);
if (!entry) {
free(out_pdu);
break;
}
flist_add_tail(&entry->list, &first->next);
} while (ret != Z_STREAM_END);
ret = deflateEnd(&stream);
if (ret == Z_OK)
return 0;
return 1;
}
#else
static int fio_append_iolog_gz(struct sk_entry *first, struct io_log *log)
{
return 1;
}
#endif
static int fio_append_gz_chunks(struct sk_entry *first, struct io_log *log)
{
struct sk_entry *entry;
struct flist_head *node;
int ret = 0;
pthread_mutex_lock(&log->chunk_lock);
flist_for_each(node, &log->chunk_list) {
struct iolog_compress *c;
c = flist_entry(node, struct iolog_compress, list);
entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, c->buf, c->len,
NULL, SK_F_VEC | SK_F_INLINE);
if (!entry) {
ret = 1;
break;
}
flist_add_tail(&entry->list, &first->next);
}
pthread_mutex_unlock(&log->chunk_lock);
return ret;
}
static int fio_append_text_log(struct sk_entry *first, struct io_log *log)
{
struct sk_entry *entry;
int ret = 0;
while (!flist_empty(&log->io_logs)) {
struct io_logs *cur_log;
size_t size;
cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
flist_del_init(&cur_log->list);
size = cur_log->nr_samples * log_entry_sz(log);
entry = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, cur_log->log, size,
NULL, SK_F_VEC | SK_F_INLINE);
if (!entry) {
ret = 1;
break;
}
flist_add_tail(&entry->list, &first->next);
}
return ret;
}
int fio_send_iolog(struct thread_data *td, struct io_log *log, const char *name)
{
struct cmd_iolog_pdu pdu = {
.nr_samples = cpu_to_le64(iolog_nr_samples(log)),
.thread_number = cpu_to_le32(td->thread_number),
.log_type = cpu_to_le32(log->log_type),
.log_hist_coarseness = cpu_to_le32(log->hist_coarseness),
};
struct sk_entry *first;
struct flist_head *entry;
int ret = 0;
if (!flist_empty(&log->chunk_list))
pdu.compressed = __cpu_to_le32(STORE_COMPRESSED);
else if (use_zlib)
pdu.compressed = __cpu_to_le32(XMIT_COMPRESSED);
else
pdu.compressed = 0;
strncpy((char *) pdu.name, name, FIO_NET_NAME_MAX);
pdu.name[FIO_NET_NAME_MAX - 1] = '\0';
/*
* We can't do this for a pre-compressed log, but for that case,
* log->nr_samples is zero anyway.
*/
flist_for_each(entry, &log->io_logs) {
struct io_logs *cur_log;
int i;
cur_log = flist_entry(entry, struct io_logs, list);
for (i = 0; i < cur_log->nr_samples; i++) {
struct io_sample *s = get_sample(log, cur_log, i);
s->time = cpu_to_le64(s->time);
s->data.val = cpu_to_le64(s->data.val);
s->__ddir = cpu_to_le32(s->__ddir);
s->bs = cpu_to_le64(s->bs);
if (log->log_offset) {
struct io_sample_offset *so = (void *) s;
so->offset = cpu_to_le64(so->offset);
}
}
}
/*
* Assemble header entry first
*/
first = fio_net_prep_cmd(FIO_NET_CMD_IOLOG, &pdu, sizeof(pdu), NULL, SK_F_VEC | SK_F_INLINE | SK_F_COPY);
if (!first)
return 1;
/*
* Now append actual log entries. If log compression was enabled on
* the job, just send out the compressed chunks directly. If we
* have a plain log, compress if we can, then send. Otherwise, send
* the plain text output.
*/
if (!flist_empty(&log->chunk_list))
ret = fio_append_gz_chunks(first, log);
else if (use_zlib)
ret = fio_append_iolog_gz(first, log);
else
ret = fio_append_text_log(first, log);
fio_net_queue_entry(first);
return ret;
}
void fio_server_send_add_job(struct thread_data *td)
{
struct cmd_add_job_pdu pdu = {
.thread_number = cpu_to_le32(td->thread_number),
.groupid = cpu_to_le32(td->groupid),
};
convert_thread_options_to_net(&pdu.top, &td->o);
fio_net_queue_cmd(FIO_NET_CMD_ADD_JOB, &pdu, sizeof(pdu), NULL,
SK_F_COPY);
}
void fio_server_send_start(struct thread_data *td)
{
struct sk_out *sk_out = pthread_getspecific(sk_out_key);
assert(sk_out->sk != -1);
fio_net_queue_cmd(FIO_NET_CMD_SERVER_START, NULL, 0, NULL, SK_F_SIMPLE);
}
int fio_server_get_verify_state(const char *name, int threadnumber,
void **datap)
{
struct thread_io_list *s;
struct cmd_sendfile out;
struct cmd_reply *rep;
uint64_t tag;
void *data;
int ret;
dprint(FD_NET, "server: request verify state\n");
rep = smalloc(sizeof(*rep));
if (!rep)
return ENOMEM;
__fio_sem_init(&rep->lock, FIO_SEM_LOCKED);
rep->data = NULL;
rep->error = 0;
verify_state_gen_name((char *) out.path, sizeof(out.path), name, me,
threadnumber);
tag = (uint64_t) (uintptr_t) rep;
fio_net_queue_cmd(FIO_NET_CMD_SENDFILE, &out, sizeof(out), &tag,
SK_F_COPY);
/*
* Wait for the backend to receive the reply
*/
if (fio_sem_down_timeout(&rep->lock, 10000)) {
log_err("fio: timed out waiting for reply\n");
ret = ETIMEDOUT;
goto fail;
}
if (rep->error) {
log_err("fio: failure on receiving state file %s: %s\n",
out.path, strerror(rep->error));
ret = rep->error;
fail:
*datap = NULL;
sfree(rep);
fio_net_queue_quit();
return ret;
}
/*
* The format is verify_state_hdr, then thread_io_list. Verify
* the header, and the thread_io_list checksum
*/
s = rep->data + sizeof(struct verify_state_hdr);
if (verify_state_hdr(rep->data, s)) {
ret = EILSEQ;
goto fail;
}
/*
* Don't need the header from now, copy just the thread_io_list
*/
ret = 0;
rep->size -= sizeof(struct verify_state_hdr);
data = malloc(rep->size);
memcpy(data, s, rep->size);
*datap = data;
sfree(rep->data);
__fio_sem_remove(&rep->lock);
sfree(rep);
return ret;
}
static int fio_init_server_ip(void)
{
struct sockaddr *addr;
socklen_t socklen;
char buf[80];
const char *str;
int sk, opt;
if (use_ipv6)
sk = socket(AF_INET6, SOCK_STREAM, 0);
else
sk = socket(AF_INET, SOCK_STREAM, 0);
if (sk < 0) {
log_err("fio: socket: %s\n", strerror(errno));
return -1;
}
opt = 1;
if (setsockopt(sk, SOL_SOCKET, SO_REUSEADDR, (void *)&opt, sizeof(opt)) < 0) {
log_err("fio: setsockopt(REUSEADDR): %s\n", strerror(errno));
close(sk);
return -1;
}
#ifdef SO_REUSEPORT
/*
* Not fatal if fails, so just ignore it if that happens
*/
setsockopt(sk, SOL_SOCKET, SO_REUSEPORT, &opt, sizeof(opt));
#endif
if (use_ipv6) {
void *src = &saddr_in6.sin6_addr;
addr = (struct sockaddr *) &saddr_in6;
socklen = sizeof(saddr_in6);
saddr_in6.sin6_family = AF_INET6;
str = inet_ntop(AF_INET6, src, buf, sizeof(buf));
} else {
void *src = &saddr_in.sin_addr;
addr = (struct sockaddr *) &saddr_in;
socklen = sizeof(saddr_in);
saddr_in.sin_family = AF_INET;
str = inet_ntop(AF_INET, src, buf, sizeof(buf));
}
if (bind(sk, addr, socklen) < 0) {
log_err("fio: bind: %s\n", strerror(errno));
log_info("fio: failed with IPv%c %s\n", use_ipv6 ? '6' : '4', str);
close(sk);
return -1;
}
return sk;
}
static int fio_init_server_sock(void)
{
struct sockaddr_un addr;
socklen_t len;
mode_t mode;
int sk;
sk = socket(AF_UNIX, SOCK_STREAM, 0);
if (sk < 0) {
log_err("fio: socket: %s\n", strerror(errno));
return -1;
}
mode = umask(000);
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, bind_sock, sizeof(addr.sun_path) - 1);
len = sizeof(addr.sun_family) + strlen(bind_sock) + 1;
if (bind(sk, (struct sockaddr *) &addr, len) < 0) {
log_err("fio: bind: %s\n", strerror(errno));
close(sk);
return -1;
}
umask(mode);
return sk;
}
static int fio_init_server_connection(void)
{
char bind_str[128];
int sk;
dprint(FD_NET, "starting server\n");
if (!bind_sock)
sk = fio_init_server_ip();
else
sk = fio_init_server_sock();
if (sk < 0)
return sk;
memset(bind_str, 0, sizeof(bind_str));
if (!bind_sock) {
char *p, port[16];
void *src;
int af;
if (use_ipv6) {
af = AF_INET6;
src = &saddr_in6.sin6_addr;
} else {
af = AF_INET;
src = &saddr_in.sin_addr;
}
p = (char *) inet_ntop(af, src, bind_str, sizeof(bind_str));
sprintf(port, ",%u", fio_net_port);
if (p)
strcat(p, port);
else
strncpy(bind_str, port, sizeof(bind_str) - 1);
} else
strncpy(bind_str, bind_sock, sizeof(bind_str) - 1);
log_info("fio: server listening on %s\n", bind_str);
if (listen(sk, 4) < 0) {
log_err("fio: listen: %s\n", strerror(errno));
close(sk);
return -1;
}
return sk;
}
int fio_server_parse_host(const char *host, int ipv6, struct in_addr *inp,
struct in6_addr *inp6)
{
int ret = 0;
if (ipv6)
ret = inet_pton(AF_INET6, host, inp6);
else
ret = inet_pton(AF_INET, host, inp);
if (ret != 1) {
struct addrinfo *res, hints = {
.ai_family = ipv6 ? AF_INET6 : AF_INET,
.ai_socktype = SOCK_STREAM,
};
ret = getaddrinfo(host, NULL, &hints, &res);
if (ret) {
log_err("fio: failed to resolve <%s> (%s)\n", host,
gai_strerror(ret));
return 1;
}
if (ipv6)
memcpy(inp6, &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr, sizeof(*inp6));
else
memcpy(inp, &((struct sockaddr_in *) res->ai_addr)->sin_addr, sizeof(*inp));
ret = 1;
freeaddrinfo(res);
}
return !(ret == 1);
}
/*
* Parse a host/ip/port string. Reads from 'str'.
*
* Outputs:
*
* For IPv4:
* *ptr is the host, *port is the port, inp is the destination.
* For IPv6:
* *ptr is the host, *port is the port, inp6 is the dest, and *ipv6 is 1.
* For local domain sockets:
* *ptr is the filename, *is_sock is 1.
*/
int fio_server_parse_string(const char *str, char **ptr, bool *is_sock,
int *port, struct in_addr *inp,
struct in6_addr *inp6, int *ipv6)
{
const char *host = str;
char *portp;
int lport = 0;
*ptr = NULL;
*is_sock = false;
*port = fio_net_port;
*ipv6 = 0;
if (!strncmp(str, "sock:", 5)) {
*ptr = strdup(str + 5);
*is_sock = true;
return 0;
}
/*
* Is it ip:<ip or host>:port
*/
if (!strncmp(host, "ip:", 3))
host += 3;
else if (!strncmp(host, "ip4:", 4))
host += 4;
else if (!strncmp(host, "ip6:", 4)) {
host += 4;
*ipv6 = 1;
} else if (host[0] == ':') {
/* String is :port */
host++;
lport = atoi(host);
if (!lport || lport > 65535) {
log_err("fio: bad server port %u\n", lport);
return 1;
}
/* no hostname given, we are done */
*port = lport;
return 0;
}
/*
* If no port seen yet, check if there's a last ',' at the end
*/
if (!lport) {
portp = strchr(host, ',');
if (portp) {
*portp = '\0';
portp++;
lport = atoi(portp);
if (!lport || lport > 65535) {
log_err("fio: bad server port %u\n", lport);
return 1;
}
}
}
if (lport)
*port = lport;
if (!strlen(host))
return 0;
*ptr = strdup(host);
if (fio_server_parse_host(*ptr, *ipv6, inp, inp6)) {
free(*ptr);
*ptr = NULL;
return 1;
}
if (*port == 0)
*port = fio_net_port;
return 0;
}
/*
* Server arg should be one of:
*
* sock:/path/to/socket
* ip:1.2.3.4
* 1.2.3.4
*
* Where sock uses unix domain sockets, and ip binds the server to
* a specific interface. If no arguments are given to the server, it
* uses IP and binds to 0.0.0.0.
*
*/
static int fio_handle_server_arg(void)
{
int port = fio_net_port;
bool is_sock;
int ret = 0;
saddr_in.sin_addr.s_addr = htonl(INADDR_ANY);
if (!fio_server_arg)
goto out;
ret = fio_server_parse_string(fio_server_arg, &bind_sock, &is_sock,
&port, &saddr_in.sin_addr,
&saddr_in6.sin6_addr, &use_ipv6);
if (!is_sock && bind_sock) {
free(bind_sock);
bind_sock = NULL;
}
out:
fio_net_port = port;
saddr_in.sin_port = htons(port);
saddr_in6.sin6_port = htons(port);
return ret;
}
static void sig_int(int sig)
{
if (bind_sock)
unlink(bind_sock);
}
static void set_sig_handlers(void)
{
struct sigaction act = {
.sa_handler = sig_int,
.sa_flags = SA_RESTART,
};
sigaction(SIGINT, &act, NULL);
}
void fio_server_destroy_sk_key(void)
{
pthread_key_delete(sk_out_key);
}
int fio_server_create_sk_key(void)
{
if (pthread_key_create(&sk_out_key, NULL)) {
log_err("fio: can't create sk_out backend key\n");
return 1;
}
pthread_setspecific(sk_out_key, NULL);
return 0;
}
static int fio_server(void)
{
int sk, ret;
dprint(FD_NET, "starting server\n");
if (fio_handle_server_arg())
return -1;
sk = fio_init_server_connection();
if (sk < 0)
return -1;
set_sig_handlers();
ret = accept_loop(sk);
close(sk);
if (fio_server_arg) {
free(fio_server_arg);
fio_server_arg = NULL;
}
if (bind_sock)
free(bind_sock);
return ret;
}
void fio_server_got_signal(int signal)
{
struct sk_out *sk_out = pthread_getspecific(sk_out_key);
assert(sk_out);
if (signal == SIGPIPE)
sk_out->sk = -1;
else {
log_info("\nfio: terminating on signal %d\n", signal);
exit_backend = true;
}
}
static int check_existing_pidfile(const char *pidfile)
{
struct stat sb;
char buf[16];
pid_t pid;
FILE *f;
if (stat(pidfile, &sb))
return 0;
f = fopen(pidfile, "r");
if (!f)
return 0;
if (fread(buf, sb.st_size, 1, f) <= 0) {
fclose(f);
return 1;
}
fclose(f);
pid = atoi(buf);
if (kill(pid, SIGCONT) < 0)
return errno != ESRCH;
return 1;
}
static int write_pid(pid_t pid, const char *pidfile)
{
FILE *fpid;
fpid = fopen(pidfile, "w");
if (!fpid) {
log_err("fio: failed opening pid file %s\n", pidfile);
return 1;
}
fprintf(fpid, "%u\n", (unsigned int) pid);
fclose(fpid);
return 0;
}
/*
* If pidfile is specified, background us.
*/
int fio_start_server(char *pidfile)
{
pid_t pid;
int ret;
#if defined(WIN32)
WSADATA wsd;
WSAStartup(MAKEWORD(2, 2), &wsd);
#endif
if (!pidfile)
return fio_server();
if (check_existing_pidfile(pidfile)) {
log_err("fio: pidfile %s exists and server appears alive\n",
pidfile);
free(pidfile);
return -1;
}
pid = fork();
if (pid < 0) {
log_err("fio: failed server fork: %s\n", strerror(errno));
free(pidfile);
return -1;
} else if (pid) {
ret = write_pid(pid, pidfile);
free(pidfile);
_exit(ret);
}
setsid();
openlog("fio", LOG_NDELAY|LOG_NOWAIT|LOG_PID, LOG_USER);
log_syslog = true;
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
f_out = NULL;
f_err = NULL;
ret = fio_server();
closelog();
unlink(pidfile);
free(pidfile);
return ret;
}
void fio_server_set_arg(const char *arg)
{
fio_server_arg = strdup(arg);
}