cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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iscsi_target_transport.c (1253B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <linux/spinlock.h>
      3#include <linux/list.h>
      4#include <linux/module.h>
      5#include <target/iscsi/iscsi_transport.h>
      6
      7static LIST_HEAD(g_transport_list);
      8static DEFINE_MUTEX(transport_mutex);
      9
     10struct iscsit_transport *iscsit_get_transport(int type)
     11{
     12	struct iscsit_transport *t;
     13
     14	mutex_lock(&transport_mutex);
     15	list_for_each_entry(t, &g_transport_list, t_node) {
     16		if (t->transport_type == type) {
     17			if (t->owner && !try_module_get(t->owner)) {
     18				t = NULL;
     19			}
     20			mutex_unlock(&transport_mutex);
     21			return t;
     22		}
     23	}
     24	mutex_unlock(&transport_mutex);
     25
     26	return NULL;
     27}
     28
     29void iscsit_put_transport(struct iscsit_transport *t)
     30{
     31	module_put(t->owner);
     32}
     33
     34void iscsit_register_transport(struct iscsit_transport *t)
     35{
     36	INIT_LIST_HEAD(&t->t_node);
     37
     38	mutex_lock(&transport_mutex);
     39	list_add_tail(&t->t_node, &g_transport_list);
     40	mutex_unlock(&transport_mutex);
     41
     42	pr_debug("Registered iSCSI transport: %s\n", t->name);
     43}
     44EXPORT_SYMBOL(iscsit_register_transport);
     45
     46void iscsit_unregister_transport(struct iscsit_transport *t)
     47{
     48	mutex_lock(&transport_mutex);
     49	list_del(&t->t_node);
     50	mutex_unlock(&transport_mutex);
     51
     52	pr_debug("Unregistered iSCSI transport: %s\n", t->name);
     53}
     54EXPORT_SYMBOL(iscsit_unregister_transport);