net/tls/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
  12 static 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_SENTINEL
  26 };
  27
  28 static int tls_statistics_seq_show(struct seq_file *seq, void *v)
  29 {
  30         unsigned long buf[LINUX_MIB_TLSMAX] = {};
  31         struct net *net = seq->private;
  32         int i;
  33
  34         snmp_get_cpu_field_batch(buf, tls_mib_list, net->mib.tls_statistics);
  35         for (i = 0; tls_mib_list[i].name; i++)
  36                 seq_printf(seq, "%-32s\t%lu\n", tls_mib_list[i].name, buf[i]);
  37
  38         return 0;
  39 }
  40 #endif
  41
  42 int __net_init tls_proc_init(struct net *net)
  43 {
  44 #ifdef CONFIG_PROC_FS
  45         if (!proc_create_net_single("tls_stat", 0444, net->proc_net,
  46                                     tls_statistics_seq_show, NULL))
  47                 return -ENOMEM;
  48 #endif /* CONFIG_PROC_FS */
  49
  50         return 0;
  51 }
  52
  53 void __net_exit tls_proc_fini(struct net *net)
  54 {
  55         remove_proc_entry("tls_stat", net->proc_net);
  56 }