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 #ifdef CONFIG_PROC_FS
  10 static const struct snmp_mib tls_mib_list[] = {
  11         SNMP_MIB_ITEM("TlsCurrTxSw", LINUX_MIB_TLSCURRTXSW),
  12         SNMP_MIB_ITEM("TlsCurrRxSw", LINUX_MIB_TLSCURRRXSW),
  13         SNMP_MIB_ITEM("TlsCurrTxDevice", LINUX_MIB_TLSCURRTXDEVICE),
  14         SNMP_MIB_ITEM("TlsCurrRxDevice", LINUX_MIB_TLSCURRRXDEVICE),
  15         SNMP_MIB_ITEM("TlsTxSw", LINUX_MIB_TLSTXSW),
  16         SNMP_MIB_ITEM("TlsRxSw", LINUX_MIB_TLSRXSW),
  17         SNMP_MIB_ITEM("TlsTxDevice", LINUX_MIB_TLSTXDEVICE),
  18         SNMP_MIB_ITEM("TlsRxDevice", LINUX_MIB_TLSRXDEVICE),
  19         SNMP_MIB_ITEM("TlsDecryptError", LINUX_MIB_TLSDECRYPTERROR),
  20         SNMP_MIB_ITEM("TlsRxDeviceResync", LINUX_MIB_TLSRXDEVICERESYNC),
  21         SNMP_MIB_SENTINEL
  22 };
  23
  24 static int tls_statistics_seq_show(struct seq_file *seq, void *v)
  25 {
  26         unsigned long buf[LINUX_MIB_TLSMAX] = {};
  27         struct net *net = seq->private;
  28         int i;
  29
  30         snmp_get_cpu_field_batch(buf, tls_mib_list, net->mib.tls_statistics);
  31         for (i = 0; tls_mib_list[i].name; i++)
  32                 seq_printf(seq, "%-32s\t%lu\n", tls_mib_list[i].name, buf[i]);
  33
  34         return 0;
  35 }
  36 #endif
  37
  38 int __net_init tls_proc_init(struct net *net)
  39 {
  40 #ifdef CONFIG_PROC_FS
  41         if (!proc_create_net_single("tls_stat", 0444, net->proc_net,
  42                                     tls_statistics_seq_show, NULL))
  43                 return -ENOMEM;
  44 #endif /* CONFIG_PROC_FS */
  45
  46         return 0;
  47 }
  48
  49 void __net_exit tls_proc_fini(struct net *net)
  50 {
  51         remove_proc_entry("tls_stat", net->proc_net);
  52 }