388 строки
8.7 KiB
C
388 строки
8.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/in.h>
|
|
#include <linux/inet.h>
|
|
#include <linux/list.h>
|
|
#include <linux/module.h>
|
|
#include <linux/net.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/rculist.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/socket.h>
|
|
#include <net/inet_sock.h>
|
|
#include <net/kcm.h>
|
|
#include <net/net_namespace.h>
|
|
#include <net/netns/generic.h>
|
|
#include <net/tcp.h>
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
static struct kcm_mux *kcm_get_first(struct seq_file *seq)
|
|
{
|
|
struct net *net = seq_file_net(seq);
|
|
struct kcm_net *knet = net_generic(net, kcm_net_id);
|
|
|
|
return list_first_or_null_rcu(&knet->mux_list,
|
|
struct kcm_mux, kcm_mux_list);
|
|
}
|
|
|
|
static struct kcm_mux *kcm_get_next(struct kcm_mux *mux)
|
|
{
|
|
struct kcm_net *knet = mux->knet;
|
|
|
|
return list_next_or_null_rcu(&knet->mux_list, &mux->kcm_mux_list,
|
|
struct kcm_mux, kcm_mux_list);
|
|
}
|
|
|
|
static struct kcm_mux *kcm_get_idx(struct seq_file *seq, loff_t pos)
|
|
{
|
|
struct net *net = seq_file_net(seq);
|
|
struct kcm_net *knet = net_generic(net, kcm_net_id);
|
|
struct kcm_mux *m;
|
|
|
|
list_for_each_entry_rcu(m, &knet->mux_list, kcm_mux_list) {
|
|
if (!pos)
|
|
return m;
|
|
--pos;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void *kcm_seq_next(struct seq_file *seq, void *v, loff_t *pos)
|
|
{
|
|
void *p;
|
|
|
|
if (v == SEQ_START_TOKEN)
|
|
p = kcm_get_first(seq);
|
|
else
|
|
p = kcm_get_next(v);
|
|
++*pos;
|
|
return p;
|
|
}
|
|
|
|
static void *kcm_seq_start(struct seq_file *seq, loff_t *pos)
|
|
__acquires(rcu)
|
|
{
|
|
rcu_read_lock();
|
|
|
|
if (!*pos)
|
|
return SEQ_START_TOKEN;
|
|
else
|
|
return kcm_get_idx(seq, *pos - 1);
|
|
}
|
|
|
|
static void kcm_seq_stop(struct seq_file *seq, void *v)
|
|
__releases(rcu)
|
|
{
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
struct kcm_proc_mux_state {
|
|
struct seq_net_private p;
|
|
int idx;
|
|
};
|
|
|
|
static void kcm_format_mux_header(struct seq_file *seq)
|
|
{
|
|
struct net *net = seq_file_net(seq);
|
|
struct kcm_net *knet = net_generic(net, kcm_net_id);
|
|
|
|
seq_printf(seq,
|
|
"*** KCM statistics (%d MUX) ****\n",
|
|
knet->count);
|
|
|
|
seq_printf(seq,
|
|
"%-14s %-10s %-16s %-10s %-16s %-8s %-8s %-8s %-8s %s",
|
|
"Object",
|
|
"RX-Msgs",
|
|
"RX-Bytes",
|
|
"TX-Msgs",
|
|
"TX-Bytes",
|
|
"Recv-Q",
|
|
"Rmem",
|
|
"Send-Q",
|
|
"Smem",
|
|
"Status");
|
|
|
|
/* XXX: pdsts header stuff here */
|
|
seq_puts(seq, "\n");
|
|
}
|
|
|
|
static void kcm_format_sock(struct kcm_sock *kcm, struct seq_file *seq,
|
|
int i, int *len)
|
|
{
|
|
seq_printf(seq,
|
|
" kcm-%-7u %-10llu %-16llu %-10llu %-16llu %-8d %-8d %-8d %-8s ",
|
|
kcm->index,
|
|
kcm->stats.rx_msgs,
|
|
kcm->stats.rx_bytes,
|
|
kcm->stats.tx_msgs,
|
|
kcm->stats.tx_bytes,
|
|
kcm->sk.sk_receive_queue.qlen,
|
|
sk_rmem_alloc_get(&kcm->sk),
|
|
kcm->sk.sk_write_queue.qlen,
|
|
"-");
|
|
|
|
if (kcm->tx_psock)
|
|
seq_printf(seq, "Psck-%u ", kcm->tx_psock->index);
|
|
|
|
if (kcm->tx_wait)
|
|
seq_puts(seq, "TxWait ");
|
|
|
|
if (kcm->tx_wait_more)
|
|
seq_puts(seq, "WMore ");
|
|
|
|
if (kcm->rx_wait)
|
|
seq_puts(seq, "RxWait ");
|
|
|
|
seq_puts(seq, "\n");
|
|
}
|
|
|
|
static void kcm_format_psock(struct kcm_psock *psock, struct seq_file *seq,
|
|
int i, int *len)
|
|
{
|
|
seq_printf(seq,
|
|
" psock-%-5u %-10llu %-16llu %-10llu %-16llu %-8d %-8d %-8d %-8d ",
|
|
psock->index,
|
|
psock->strp.stats.msgs,
|
|
psock->strp.stats.bytes,
|
|
psock->stats.tx_msgs,
|
|
psock->stats.tx_bytes,
|
|
psock->sk->sk_receive_queue.qlen,
|
|
atomic_read(&psock->sk->sk_rmem_alloc),
|
|
psock->sk->sk_write_queue.qlen,
|
|
refcount_read(&psock->sk->sk_wmem_alloc));
|
|
|
|
if (psock->done)
|
|
seq_puts(seq, "Done ");
|
|
|
|
if (psock->tx_stopped)
|
|
seq_puts(seq, "TxStop ");
|
|
|
|
if (psock->strp.stopped)
|
|
seq_puts(seq, "RxStop ");
|
|
|
|
if (psock->tx_kcm)
|
|
seq_printf(seq, "Rsvd-%d ", psock->tx_kcm->index);
|
|
|
|
if (!psock->strp.paused && !psock->ready_rx_msg) {
|
|
if (psock->sk->sk_receive_queue.qlen) {
|
|
if (psock->strp.need_bytes)
|
|
seq_printf(seq, "RxWait=%u ",
|
|
psock->strp.need_bytes);
|
|
else
|
|
seq_printf(seq, "RxWait ");
|
|
}
|
|
} else {
|
|
if (psock->strp.paused)
|
|
seq_puts(seq, "RxPause ");
|
|
|
|
if (psock->ready_rx_msg)
|
|
seq_puts(seq, "RdyRx ");
|
|
}
|
|
|
|
seq_puts(seq, "\n");
|
|
}
|
|
|
|
static void
|
|
kcm_format_mux(struct kcm_mux *mux, loff_t idx, struct seq_file *seq)
|
|
{
|
|
int i, len;
|
|
struct kcm_sock *kcm;
|
|
struct kcm_psock *psock;
|
|
|
|
/* mux information */
|
|
seq_printf(seq,
|
|
"%-6s%-8s %-10llu %-16llu %-10llu %-16llu %-8s %-8s %-8s %-8s ",
|
|
"mux", "",
|
|
mux->stats.rx_msgs,
|
|
mux->stats.rx_bytes,
|
|
mux->stats.tx_msgs,
|
|
mux->stats.tx_bytes,
|
|
"-", "-", "-", "-");
|
|
|
|
seq_printf(seq, "KCMs: %d, Psocks %d\n",
|
|
mux->kcm_socks_cnt, mux->psocks_cnt);
|
|
|
|
/* kcm sock information */
|
|
i = 0;
|
|
spin_lock_bh(&mux->lock);
|
|
list_for_each_entry(kcm, &mux->kcm_socks, kcm_sock_list) {
|
|
kcm_format_sock(kcm, seq, i, &len);
|
|
i++;
|
|
}
|
|
i = 0;
|
|
list_for_each_entry(psock, &mux->psocks, psock_list) {
|
|
kcm_format_psock(psock, seq, i, &len);
|
|
i++;
|
|
}
|
|
spin_unlock_bh(&mux->lock);
|
|
}
|
|
|
|
static int kcm_seq_show(struct seq_file *seq, void *v)
|
|
{
|
|
struct kcm_proc_mux_state *mux_state;
|
|
|
|
mux_state = seq->private;
|
|
if (v == SEQ_START_TOKEN) {
|
|
mux_state->idx = 0;
|
|
kcm_format_mux_header(seq);
|
|
} else {
|
|
kcm_format_mux(v, mux_state->idx, seq);
|
|
mux_state->idx++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const struct seq_operations kcm_seq_ops = {
|
|
.show = kcm_seq_show,
|
|
.start = kcm_seq_start,
|
|
.next = kcm_seq_next,
|
|
.stop = kcm_seq_stop,
|
|
};
|
|
|
|
static int kcm_stats_seq_show(struct seq_file *seq, void *v)
|
|
{
|
|
struct kcm_psock_stats psock_stats;
|
|
struct kcm_mux_stats mux_stats;
|
|
struct strp_aggr_stats strp_stats;
|
|
struct kcm_mux *mux;
|
|
struct kcm_psock *psock;
|
|
struct net *net = seq->private;
|
|
struct kcm_net *knet = net_generic(net, kcm_net_id);
|
|
|
|
memset(&mux_stats, 0, sizeof(mux_stats));
|
|
memset(&psock_stats, 0, sizeof(psock_stats));
|
|
memset(&strp_stats, 0, sizeof(strp_stats));
|
|
|
|
mutex_lock(&knet->mutex);
|
|
|
|
aggregate_mux_stats(&knet->aggregate_mux_stats, &mux_stats);
|
|
aggregate_psock_stats(&knet->aggregate_psock_stats,
|
|
&psock_stats);
|
|
aggregate_strp_stats(&knet->aggregate_strp_stats,
|
|
&strp_stats);
|
|
|
|
list_for_each_entry_rcu(mux, &knet->mux_list, kcm_mux_list) {
|
|
spin_lock_bh(&mux->lock);
|
|
aggregate_mux_stats(&mux->stats, &mux_stats);
|
|
aggregate_psock_stats(&mux->aggregate_psock_stats,
|
|
&psock_stats);
|
|
aggregate_strp_stats(&mux->aggregate_strp_stats,
|
|
&strp_stats);
|
|
list_for_each_entry(psock, &mux->psocks, psock_list) {
|
|
aggregate_psock_stats(&psock->stats, &psock_stats);
|
|
save_strp_stats(&psock->strp, &strp_stats);
|
|
}
|
|
|
|
spin_unlock_bh(&mux->lock);
|
|
}
|
|
|
|
mutex_unlock(&knet->mutex);
|
|
|
|
seq_printf(seq,
|
|
"%-8s %-10s %-16s %-10s %-16s %-10s %-10s %-10s %-10s %-10s\n",
|
|
"MUX",
|
|
"RX-Msgs",
|
|
"RX-Bytes",
|
|
"TX-Msgs",
|
|
"TX-Bytes",
|
|
"TX-Retries",
|
|
"Attach",
|
|
"Unattach",
|
|
"UnattchRsvd",
|
|
"RX-RdyDrops");
|
|
|
|
seq_printf(seq,
|
|
"%-8s %-10llu %-16llu %-10llu %-16llu %-10u %-10u %-10u %-10u %-10u\n",
|
|
"",
|
|
mux_stats.rx_msgs,
|
|
mux_stats.rx_bytes,
|
|
mux_stats.tx_msgs,
|
|
mux_stats.tx_bytes,
|
|
mux_stats.tx_retries,
|
|
mux_stats.psock_attach,
|
|
mux_stats.psock_unattach_rsvd,
|
|
mux_stats.psock_unattach,
|
|
mux_stats.rx_ready_drops);
|
|
|
|
seq_printf(seq,
|
|
"%-8s %-10s %-16s %-10s %-16s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s\n",
|
|
"Psock",
|
|
"RX-Msgs",
|
|
"RX-Bytes",
|
|
"TX-Msgs",
|
|
"TX-Bytes",
|
|
"Reserved",
|
|
"Unreserved",
|
|
"RX-Aborts",
|
|
"RX-Intr",
|
|
"RX-Unrecov",
|
|
"RX-MemFail",
|
|
"RX-NeedMor",
|
|
"RX-BadLen",
|
|
"RX-TooBig",
|
|
"RX-Timeout",
|
|
"TX-Aborts");
|
|
|
|
seq_printf(seq,
|
|
"%-8s %-10llu %-16llu %-10llu %-16llu %-10llu %-10llu %-10u %-10u %-10u %-10u %-10u %-10u %-10u %-10u %-10u\n",
|
|
"",
|
|
strp_stats.msgs,
|
|
strp_stats.bytes,
|
|
psock_stats.tx_msgs,
|
|
psock_stats.tx_bytes,
|
|
psock_stats.reserved,
|
|
psock_stats.unreserved,
|
|
strp_stats.aborts,
|
|
strp_stats.interrupted,
|
|
strp_stats.unrecov_intr,
|
|
strp_stats.mem_fail,
|
|
strp_stats.need_more_hdr,
|
|
strp_stats.bad_hdr_len,
|
|
strp_stats.msg_too_big,
|
|
strp_stats.msg_timeouts,
|
|
psock_stats.tx_aborts);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kcm_proc_init_net(struct net *net)
|
|
{
|
|
if (!proc_create_net_single("kcm_stats", 0444, net->proc_net,
|
|
kcm_stats_seq_show, NULL))
|
|
goto out_kcm_stats;
|
|
|
|
if (!proc_create_net("kcm", 0444, net->proc_net, &kcm_seq_ops,
|
|
sizeof(struct kcm_proc_mux_state)))
|
|
goto out_kcm;
|
|
|
|
return 0;
|
|
|
|
out_kcm:
|
|
remove_proc_entry("kcm_stats", net->proc_net);
|
|
out_kcm_stats:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static void kcm_proc_exit_net(struct net *net)
|
|
{
|
|
remove_proc_entry("kcm", net->proc_net);
|
|
remove_proc_entry("kcm_stats", net->proc_net);
|
|
}
|
|
|
|
static struct pernet_operations kcm_net_ops = {
|
|
.init = kcm_proc_init_net,
|
|
.exit = kcm_proc_exit_net,
|
|
};
|
|
|
|
int __init kcm_proc_init(void)
|
|
{
|
|
return register_pernet_subsys(&kcm_net_ops);
|
|
}
|
|
|
|
void __exit kcm_proc_exit(void)
|
|
{
|
|
unregister_pernet_subsys(&kcm_net_ops);
|
|
}
|
|
|
|
#endif /* CONFIG_PROC_FS */
|