tls_proc.c

 1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 2/* Copyright (C) 2019 Netronome Systems, Inc. */
 3
 4#include <linux/proc_fs.h>
 5#include <linux/seq_file.h>
 6#include <net/snmp.h>
 7#include <net/tls.h>
 8
 9#include "tls.h"
10
11#ifdef CONFIG_PROC_FS
12static const struct snmp_mib tls_mib_list[] = {
13	SNMP_MIB_ITEM("TlsCurrTxSw", LINUX_MIB_TLSCURRTXSW),
14	SNMP_MIB_ITEM("TlsCurrRxSw", LINUX_MIB_TLSCURRRXSW),
15	SNMP_MIB_ITEM("TlsCurrTxDevice", LINUX_MIB_TLSCURRTXDEVICE),
16	SNMP_MIB_ITEM("TlsCurrRxDevice", LINUX_MIB_TLSCURRRXDEVICE),
17	SNMP_MIB_ITEM("TlsTxSw", LINUX_MIB_TLSTXSW),
18	SNMP_MIB_ITEM("TlsRxSw", LINUX_MIB_TLSRXSW),
19	SNMP_MIB_ITEM("TlsTxDevice", LINUX_MIB_TLSTXDEVICE),
20	SNMP_MIB_ITEM("TlsRxDevice", LINUX_MIB_TLSRXDEVICE),
21	SNMP_MIB_ITEM("TlsDecryptError", LINUX_MIB_TLSDECRYPTERROR),
22	SNMP_MIB_ITEM("TlsRxDeviceResync", LINUX_MIB_TLSRXDEVICERESYNC),
23	SNMP_MIB_ITEM("TlsDecryptRetry", LINUX_MIB_TLSDECRYPTRETRY),
24	SNMP_MIB_ITEM("TlsRxNoPadViolation", LINUX_MIB_TLSRXNOPADVIOL),
25	SNMP_MIB_ITEM("TlsRxRekeyOk", LINUX_MIB_TLSRXREKEYOK),
26	SNMP_MIB_ITEM("TlsRxRekeyError", LINUX_MIB_TLSRXREKEYERROR),
27	SNMP_MIB_ITEM("TlsTxRekeyOk", LINUX_MIB_TLSTXREKEYOK),
28	SNMP_MIB_ITEM("TlsTxRekeyError", LINUX_MIB_TLSTXREKEYERROR),
29	SNMP_MIB_ITEM("TlsRxRekeyReceived", LINUX_MIB_TLSRXREKEYRECEIVED),
30};
31
32static int tls_statistics_seq_show(struct seq_file *seq, void *v)
33{
34	unsigned long buf[ARRAY_SIZE(tls_mib_list)];
35	const int cnt = ARRAY_SIZE(tls_mib_list);
36	struct net *net = seq->private;
37	int i;
38
39	memset(buf, 0, sizeof(buf));
40	snmp_get_cpu_field_batch_cnt(buf, tls_mib_list, cnt,
41				     net->mib.tls_statistics);
42	for (i = 0; i < cnt; i++)
43		seq_printf(seq, "%-32s\t%lu\n", tls_mib_list[i].name, buf[i]);
44
45	return 0;
46}
47#endif
48
49int __net_init tls_proc_init(struct net *net)
50{
51#ifdef CONFIG_PROC_FS
52	if (!proc_create_net_single("tls_stat", 0444, net->proc_net,
53				    tls_statistics_seq_show, NULL))
54		return -ENOMEM;
55#endif /* CONFIG_PROC_FS */
56
57	return 0;
58}
59
60void __net_exit tls_proc_fini(struct net *net)
61{
62	remove_proc_entry("tls_stat", net->proc_net);
63}