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1402 lines
36 KiB
1402 lines
36 KiB
/* |
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* Copyright (c) 2006-2008 Chelsio, Inc. All rights reserved. |
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* |
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* This software is available to you under a choice of one of two |
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* licenses. You may choose to be licensed under the terms of the GNU |
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* General Public License (GPL) Version 2, available from the file |
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* COPYING in the main directory of this source tree, or the |
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* OpenIB.org BSD license below: |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* - Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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|
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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|
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#include <linux/list.h> |
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#include <linux/slab.h> |
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#include <net/neighbour.h> |
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#include <linux/notifier.h> |
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#include <linux/atomic.h> |
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#include <linux/proc_fs.h> |
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#include <linux/if_vlan.h> |
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#include <net/netevent.h> |
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#include <linux/highmem.h> |
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#include <linux/vmalloc.h> |
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#include <linux/export.h> |
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|
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#include "common.h" |
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#include "regs.h" |
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#include "cxgb3_ioctl.h" |
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#include "cxgb3_ctl_defs.h" |
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#include "cxgb3_defs.h" |
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#include "l2t.h" |
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#include "firmware_exports.h" |
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#include "cxgb3_offload.h" |
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|
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static LIST_HEAD(client_list); |
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static LIST_HEAD(ofld_dev_list); |
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static DEFINE_MUTEX(cxgb3_db_lock); |
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|
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static DEFINE_RWLOCK(adapter_list_lock); |
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static LIST_HEAD(adapter_list); |
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|
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static const unsigned int MAX_ATIDS = 64 * 1024; |
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static const unsigned int ATID_BASE = 0x10000; |
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|
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static void cxgb_neigh_update(struct neighbour *neigh); |
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static void cxgb_redirect(struct dst_entry *old, struct dst_entry *new, |
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struct neighbour *neigh, const void *daddr); |
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|
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static inline int offload_activated(struct t3cdev *tdev) |
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{ |
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const struct adapter *adapter = tdev2adap(tdev); |
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|
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return test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map); |
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} |
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|
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/** |
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* cxgb3_register_client - register an offload client |
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* @client: the client |
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* |
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* Add the client to the client list, |
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* and call backs the client for each activated offload device |
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*/ |
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void cxgb3_register_client(struct cxgb3_client *client) |
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{ |
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struct t3cdev *tdev; |
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|
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mutex_lock(&cxgb3_db_lock); |
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list_add_tail(&client->client_list, &client_list); |
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|
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if (client->add) { |
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list_for_each_entry(tdev, &ofld_dev_list, ofld_dev_list) { |
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if (offload_activated(tdev)) |
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client->add(tdev); |
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} |
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} |
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mutex_unlock(&cxgb3_db_lock); |
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} |
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|
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EXPORT_SYMBOL(cxgb3_register_client); |
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|
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/** |
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* cxgb3_unregister_client - unregister an offload client |
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* @client: the client |
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* |
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* Remove the client to the client list, |
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* and call backs the client for each activated offload device. |
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*/ |
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void cxgb3_unregister_client(struct cxgb3_client *client) |
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{ |
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struct t3cdev *tdev; |
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|
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mutex_lock(&cxgb3_db_lock); |
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list_del(&client->client_list); |
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|
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if (client->remove) { |
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list_for_each_entry(tdev, &ofld_dev_list, ofld_dev_list) { |
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if (offload_activated(tdev)) |
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client->remove(tdev); |
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} |
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} |
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mutex_unlock(&cxgb3_db_lock); |
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} |
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|
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EXPORT_SYMBOL(cxgb3_unregister_client); |
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|
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/** |
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* cxgb3_add_clients - activate registered clients for an offload device |
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* @tdev: the offload device |
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* |
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* Call backs all registered clients once a offload device is activated |
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*/ |
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void cxgb3_add_clients(struct t3cdev *tdev) |
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{ |
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struct cxgb3_client *client; |
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mutex_lock(&cxgb3_db_lock); |
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list_for_each_entry(client, &client_list, client_list) { |
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if (client->add) |
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client->add(tdev); |
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} |
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mutex_unlock(&cxgb3_db_lock); |
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} |
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|
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/** |
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* cxgb3_remove_clients - deactivates registered clients |
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* for an offload device |
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* @tdev: the offload device |
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* |
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* Call backs all registered clients once a offload device is deactivated |
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*/ |
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void cxgb3_remove_clients(struct t3cdev *tdev) |
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{ |
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struct cxgb3_client *client; |
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mutex_lock(&cxgb3_db_lock); |
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list_for_each_entry(client, &client_list, client_list) { |
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if (client->remove) |
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client->remove(tdev); |
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} |
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mutex_unlock(&cxgb3_db_lock); |
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} |
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void cxgb3_event_notify(struct t3cdev *tdev, u32 event, u32 port) |
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{ |
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struct cxgb3_client *client; |
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mutex_lock(&cxgb3_db_lock); |
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list_for_each_entry(client, &client_list, client_list) { |
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if (client->event_handler) |
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client->event_handler(tdev, event, port); |
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} |
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mutex_unlock(&cxgb3_db_lock); |
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} |
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static struct net_device *get_iff_from_mac(struct adapter *adapter, |
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const unsigned char *mac, |
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unsigned int vlan) |
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{ |
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int i; |
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for_each_port(adapter, i) { |
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struct net_device *dev = adapter->port[i]; |
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|
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if (ether_addr_equal(dev->dev_addr, mac)) { |
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rcu_read_lock(); |
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if (vlan && vlan != VLAN_VID_MASK) { |
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dev = __vlan_find_dev_deep_rcu(dev, htons(ETH_P_8021Q), vlan); |
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} else if (netif_is_bond_slave(dev)) { |
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struct net_device *upper_dev; |
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|
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while ((upper_dev = |
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netdev_master_upper_dev_get_rcu(dev))) |
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dev = upper_dev; |
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} |
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rcu_read_unlock(); |
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return dev; |
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} |
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} |
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return NULL; |
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} |
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static int cxgb_ulp_iscsi_ctl(struct adapter *adapter, unsigned int req, |
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void *data) |
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{ |
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int i; |
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int ret = 0; |
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unsigned int val = 0; |
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struct ulp_iscsi_info *uiip = data; |
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|
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switch (req) { |
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case ULP_ISCSI_GET_PARAMS: |
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uiip->pdev = adapter->pdev; |
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uiip->llimit = t3_read_reg(adapter, A_ULPRX_ISCSI_LLIMIT); |
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uiip->ulimit = t3_read_reg(adapter, A_ULPRX_ISCSI_ULIMIT); |
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uiip->tagmask = t3_read_reg(adapter, A_ULPRX_ISCSI_TAGMASK); |
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val = t3_read_reg(adapter, A_ULPRX_ISCSI_PSZ); |
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for (i = 0; i < 4; i++, val >>= 8) |
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uiip->pgsz_factor[i] = val & 0xFF; |
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val = t3_read_reg(adapter, A_TP_PARA_REG7); |
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uiip->max_txsz = |
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uiip->max_rxsz = min((val >> S_PMMAXXFERLEN0)&M_PMMAXXFERLEN0, |
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(val >> S_PMMAXXFERLEN1)&M_PMMAXXFERLEN1); |
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/* |
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* On tx, the iscsi pdu has to be <= tx page size and has to |
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* fit into the Tx PM FIFO. |
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*/ |
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val = min(adapter->params.tp.tx_pg_size, |
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t3_read_reg(adapter, A_PM1_TX_CFG) >> 17); |
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uiip->max_txsz = min(val, uiip->max_txsz); |
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/* set MaxRxData to 16224 */ |
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val = t3_read_reg(adapter, A_TP_PARA_REG2); |
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if ((val >> S_MAXRXDATA) != 0x3f60) { |
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val &= (M_RXCOALESCESIZE << S_RXCOALESCESIZE); |
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val |= V_MAXRXDATA(0x3f60); |
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pr_info("%s, iscsi set MaxRxData to 16224 (0x%x)\n", |
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adapter->name, val); |
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t3_write_reg(adapter, A_TP_PARA_REG2, val); |
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} |
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|
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/* |
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* on rx, the iscsi pdu has to be < rx page size and the |
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* the max rx data length programmed in TP |
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*/ |
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val = min(adapter->params.tp.rx_pg_size, |
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((t3_read_reg(adapter, A_TP_PARA_REG2)) >> |
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S_MAXRXDATA) & M_MAXRXDATA); |
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uiip->max_rxsz = min(val, uiip->max_rxsz); |
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break; |
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case ULP_ISCSI_SET_PARAMS: |
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t3_write_reg(adapter, A_ULPRX_ISCSI_TAGMASK, uiip->tagmask); |
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/* program the ddp page sizes */ |
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for (i = 0; i < 4; i++) |
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val |= (uiip->pgsz_factor[i] & 0xF) << (8 * i); |
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if (val && (val != t3_read_reg(adapter, A_ULPRX_ISCSI_PSZ))) { |
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pr_info("%s, setting iscsi pgsz 0x%x, %u,%u,%u,%u\n", |
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adapter->name, val, uiip->pgsz_factor[0], |
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uiip->pgsz_factor[1], uiip->pgsz_factor[2], |
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uiip->pgsz_factor[3]); |
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t3_write_reg(adapter, A_ULPRX_ISCSI_PSZ, val); |
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} |
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break; |
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default: |
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ret = -EOPNOTSUPP; |
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} |
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return ret; |
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} |
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|
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/* Response queue used for RDMA events. */ |
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#define ASYNC_NOTIF_RSPQ 0 |
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static int cxgb_rdma_ctl(struct adapter *adapter, unsigned int req, void *data) |
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{ |
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int ret = 0; |
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|
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switch (req) { |
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case RDMA_GET_PARAMS: { |
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struct rdma_info *rdma = data; |
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struct pci_dev *pdev = adapter->pdev; |
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|
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rdma->udbell_physbase = pci_resource_start(pdev, 2); |
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rdma->udbell_len = pci_resource_len(pdev, 2); |
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rdma->tpt_base = |
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t3_read_reg(adapter, A_ULPTX_TPT_LLIMIT); |
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rdma->tpt_top = t3_read_reg(adapter, A_ULPTX_TPT_ULIMIT); |
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rdma->pbl_base = |
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t3_read_reg(adapter, A_ULPTX_PBL_LLIMIT); |
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rdma->pbl_top = t3_read_reg(adapter, A_ULPTX_PBL_ULIMIT); |
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rdma->rqt_base = t3_read_reg(adapter, A_ULPRX_RQ_LLIMIT); |
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rdma->rqt_top = t3_read_reg(adapter, A_ULPRX_RQ_ULIMIT); |
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rdma->kdb_addr = adapter->regs + A_SG_KDOORBELL; |
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rdma->pdev = pdev; |
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break; |
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} |
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case RDMA_CQ_OP:{ |
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unsigned long flags; |
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struct rdma_cq_op *rdma = data; |
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|
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/* may be called in any context */ |
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spin_lock_irqsave(&adapter->sge.reg_lock, flags); |
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ret = t3_sge_cqcntxt_op(adapter, rdma->id, rdma->op, |
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rdma->credits); |
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spin_unlock_irqrestore(&adapter->sge.reg_lock, flags); |
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break; |
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} |
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case RDMA_GET_MEM:{ |
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struct ch_mem_range *t = data; |
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struct mc7 *mem; |
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|
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if ((t->addr & 7) || (t->len & 7)) |
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return -EINVAL; |
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if (t->mem_id == MEM_CM) |
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mem = &adapter->cm; |
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else if (t->mem_id == MEM_PMRX) |
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mem = &adapter->pmrx; |
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else if (t->mem_id == MEM_PMTX) |
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mem = &adapter->pmtx; |
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else |
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return -EINVAL; |
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|
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ret = |
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t3_mc7_bd_read(mem, t->addr / 8, t->len / 8, |
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(u64 *) t->buf); |
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if (ret) |
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return ret; |
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break; |
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} |
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case RDMA_CQ_SETUP:{ |
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struct rdma_cq_setup *rdma = data; |
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|
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spin_lock_irq(&adapter->sge.reg_lock); |
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ret = |
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t3_sge_init_cqcntxt(adapter, rdma->id, |
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rdma->base_addr, rdma->size, |
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ASYNC_NOTIF_RSPQ, |
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rdma->ovfl_mode, rdma->credits, |
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rdma->credit_thres); |
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spin_unlock_irq(&adapter->sge.reg_lock); |
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break; |
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} |
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case RDMA_CQ_DISABLE: |
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spin_lock_irq(&adapter->sge.reg_lock); |
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ret = t3_sge_disable_cqcntxt(adapter, *(unsigned int *)data); |
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spin_unlock_irq(&adapter->sge.reg_lock); |
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break; |
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case RDMA_CTRL_QP_SETUP:{ |
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struct rdma_ctrlqp_setup *rdma = data; |
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|
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spin_lock_irq(&adapter->sge.reg_lock); |
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ret = t3_sge_init_ecntxt(adapter, FW_RI_SGEEC_START, 0, |
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SGE_CNTXT_RDMA, |
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ASYNC_NOTIF_RSPQ, |
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rdma->base_addr, rdma->size, |
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FW_RI_TID_START, 1, 0); |
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spin_unlock_irq(&adapter->sge.reg_lock); |
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break; |
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} |
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case RDMA_GET_MIB: { |
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spin_lock(&adapter->stats_lock); |
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t3_tp_get_mib_stats(adapter, (struct tp_mib_stats *)data); |
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spin_unlock(&adapter->stats_lock); |
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break; |
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} |
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default: |
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ret = -EOPNOTSUPP; |
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} |
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return ret; |
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} |
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|
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static int cxgb_offload_ctl(struct t3cdev *tdev, unsigned int req, void *data) |
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{ |
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struct adapter *adapter = tdev2adap(tdev); |
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struct tid_range *tid; |
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struct mtutab *mtup; |
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struct iff_mac *iffmacp; |
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struct ddp_params *ddpp; |
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struct adap_ports *ports; |
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struct ofld_page_info *rx_page_info; |
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struct tp_params *tp = &adapter->params.tp; |
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int i; |
|
|
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switch (req) { |
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case GET_MAX_OUTSTANDING_WR: |
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*(unsigned int *)data = FW_WR_NUM; |
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break; |
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case GET_WR_LEN: |
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*(unsigned int *)data = WR_FLITS; |
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break; |
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case GET_TX_MAX_CHUNK: |
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*(unsigned int *)data = 1 << 20; /* 1MB */ |
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break; |
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case GET_TID_RANGE: |
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tid = data; |
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tid->num = t3_mc5_size(&adapter->mc5) - |
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adapter->params.mc5.nroutes - |
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adapter->params.mc5.nfilters - adapter->params.mc5.nservers; |
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tid->base = 0; |
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break; |
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case GET_STID_RANGE: |
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tid = data; |
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tid->num = adapter->params.mc5.nservers; |
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tid->base = t3_mc5_size(&adapter->mc5) - tid->num - |
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adapter->params.mc5.nfilters - adapter->params.mc5.nroutes; |
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break; |
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case GET_L2T_CAPACITY: |
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*(unsigned int *)data = 2048; |
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break; |
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case GET_MTUS: |
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mtup = data; |
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mtup->size = NMTUS; |
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mtup->mtus = adapter->params.mtus; |
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break; |
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case GET_IFF_FROM_MAC: |
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iffmacp = data; |
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iffmacp->dev = get_iff_from_mac(adapter, iffmacp->mac_addr, |
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iffmacp->vlan_tag & |
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VLAN_VID_MASK); |
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break; |
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case GET_DDP_PARAMS: |
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ddpp = data; |
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ddpp->llimit = t3_read_reg(adapter, A_ULPRX_TDDP_LLIMIT); |
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ddpp->ulimit = t3_read_reg(adapter, A_ULPRX_TDDP_ULIMIT); |
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ddpp->tag_mask = t3_read_reg(adapter, A_ULPRX_TDDP_TAGMASK); |
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break; |
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case GET_PORTS: |
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ports = data; |
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ports->nports = adapter->params.nports; |
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for_each_port(adapter, i) |
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ports->lldevs[i] = adapter->port[i]; |
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break; |
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case ULP_ISCSI_GET_PARAMS: |
|
case ULP_ISCSI_SET_PARAMS: |
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if (!offload_running(adapter)) |
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return -EAGAIN; |
|
return cxgb_ulp_iscsi_ctl(adapter, req, data); |
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case RDMA_GET_PARAMS: |
|
case RDMA_CQ_OP: |
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case RDMA_CQ_SETUP: |
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case RDMA_CQ_DISABLE: |
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case RDMA_CTRL_QP_SETUP: |
|
case RDMA_GET_MEM: |
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case RDMA_GET_MIB: |
|
if (!offload_running(adapter)) |
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return -EAGAIN; |
|
return cxgb_rdma_ctl(adapter, req, data); |
|
case GET_RX_PAGE_INFO: |
|
rx_page_info = data; |
|
rx_page_info->page_size = tp->rx_pg_size; |
|
rx_page_info->num = tp->rx_num_pgs; |
|
break; |
|
case GET_ISCSI_IPV4ADDR: { |
|
struct iscsi_ipv4addr *p = data; |
|
struct port_info *pi = netdev_priv(p->dev); |
|
p->ipv4addr = pi->iscsi_ipv4addr; |
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break; |
|
} |
|
case GET_EMBEDDED_INFO: { |
|
struct ch_embedded_info *e = data; |
|
|
|
spin_lock(&adapter->stats_lock); |
|
t3_get_fw_version(adapter, &e->fw_vers); |
|
t3_get_tp_version(adapter, &e->tp_vers); |
|
spin_unlock(&adapter->stats_lock); |
|
break; |
|
} |
|
default: |
|
return -EOPNOTSUPP; |
|
} |
|
return 0; |
|
} |
|
|
|
/* |
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* Dummy handler for Rx offload packets in case we get an offload packet before |
|
* proper processing is setup. This complains and drops the packet as it isn't |
|
* normal to get offload packets at this stage. |
|
*/ |
|
static int rx_offload_blackhole(struct t3cdev *dev, struct sk_buff **skbs, |
|
int n) |
|
{ |
|
while (n--) |
|
dev_kfree_skb_any(skbs[n]); |
|
return 0; |
|
} |
|
|
|
static void dummy_neigh_update(struct t3cdev *dev, struct neighbour *neigh) |
|
{ |
|
} |
|
|
|
void cxgb3_set_dummy_ops(struct t3cdev *dev) |
|
{ |
|
dev->recv = rx_offload_blackhole; |
|
dev->neigh_update = dummy_neigh_update; |
|
} |
|
|
|
/* |
|
* Free an active-open TID. |
|
*/ |
|
void *cxgb3_free_atid(struct t3cdev *tdev, int atid) |
|
{ |
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; |
|
union active_open_entry *p = atid2entry(t, atid); |
|
void *ctx = p->t3c_tid.ctx; |
|
|
|
spin_lock_bh(&t->atid_lock); |
|
p->next = t->afree; |
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t->afree = p; |
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t->atids_in_use--; |
|
spin_unlock_bh(&t->atid_lock); |
|
|
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return ctx; |
|
} |
|
|
|
EXPORT_SYMBOL(cxgb3_free_atid); |
|
|
|
/* |
|
* Free a server TID and return it to the free pool. |
|
*/ |
|
void cxgb3_free_stid(struct t3cdev *tdev, int stid) |
|
{ |
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; |
|
union listen_entry *p = stid2entry(t, stid); |
|
|
|
spin_lock_bh(&t->stid_lock); |
|
p->next = t->sfree; |
|
t->sfree = p; |
|
t->stids_in_use--; |
|
spin_unlock_bh(&t->stid_lock); |
|
} |
|
|
|
EXPORT_SYMBOL(cxgb3_free_stid); |
|
|
|
void cxgb3_insert_tid(struct t3cdev *tdev, struct cxgb3_client *client, |
|
void *ctx, unsigned int tid) |
|
{ |
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; |
|
|
|
t->tid_tab[tid].client = client; |
|
t->tid_tab[tid].ctx = ctx; |
|
atomic_inc(&t->tids_in_use); |
|
} |
|
|
|
EXPORT_SYMBOL(cxgb3_insert_tid); |
|
|
|
/* |
|
* Populate a TID_RELEASE WR. The skb must be already propely sized. |
|
*/ |
|
static inline void mk_tid_release(struct sk_buff *skb, unsigned int tid) |
|
{ |
|
struct cpl_tid_release *req; |
|
|
|
skb->priority = CPL_PRIORITY_SETUP; |
|
req = __skb_put(skb, sizeof(*req)); |
|
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); |
|
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, tid)); |
|
} |
|
|
|
static void t3_process_tid_release_list(struct work_struct *work) |
|
{ |
|
struct t3c_data *td = container_of(work, struct t3c_data, |
|
tid_release_task); |
|
struct sk_buff *skb; |
|
struct t3cdev *tdev = td->dev; |
|
|
|
|
|
spin_lock_bh(&td->tid_release_lock); |
|
while (td->tid_release_list) { |
|
struct t3c_tid_entry *p = td->tid_release_list; |
|
|
|
td->tid_release_list = p->ctx; |
|
spin_unlock_bh(&td->tid_release_lock); |
|
|
|
skb = alloc_skb(sizeof(struct cpl_tid_release), |
|
GFP_KERNEL); |
|
if (!skb) |
|
skb = td->nofail_skb; |
|
if (!skb) { |
|
spin_lock_bh(&td->tid_release_lock); |
|
p->ctx = (void *)td->tid_release_list; |
|
td->tid_release_list = p; |
|
break; |
|
} |
|
mk_tid_release(skb, p - td->tid_maps.tid_tab); |
|
cxgb3_ofld_send(tdev, skb); |
|
p->ctx = NULL; |
|
if (skb == td->nofail_skb) |
|
td->nofail_skb = |
|
alloc_skb(sizeof(struct cpl_tid_release), |
|
GFP_KERNEL); |
|
spin_lock_bh(&td->tid_release_lock); |
|
} |
|
td->release_list_incomplete = (td->tid_release_list == NULL) ? 0 : 1; |
|
spin_unlock_bh(&td->tid_release_lock); |
|
|
|
if (!td->nofail_skb) |
|
td->nofail_skb = |
|
alloc_skb(sizeof(struct cpl_tid_release), |
|
GFP_KERNEL); |
|
} |
|
|
|
/* use ctx as a next pointer in the tid release list */ |
|
void cxgb3_queue_tid_release(struct t3cdev *tdev, unsigned int tid) |
|
{ |
|
struct t3c_data *td = T3C_DATA(tdev); |
|
struct t3c_tid_entry *p = &td->tid_maps.tid_tab[tid]; |
|
|
|
spin_lock_bh(&td->tid_release_lock); |
|
p->ctx = (void *)td->tid_release_list; |
|
p->client = NULL; |
|
td->tid_release_list = p; |
|
if (!p->ctx || td->release_list_incomplete) |
|
schedule_work(&td->tid_release_task); |
|
spin_unlock_bh(&td->tid_release_lock); |
|
} |
|
|
|
EXPORT_SYMBOL(cxgb3_queue_tid_release); |
|
|
|
/* |
|
* Remove a tid from the TID table. A client may defer processing its last |
|
* CPL message if it is locked at the time it arrives, and while the message |
|
* sits in the client's backlog the TID may be reused for another connection. |
|
* To handle this we atomically switch the TID association if it still points |
|
* to the original client context. |
|
*/ |
|
void cxgb3_remove_tid(struct t3cdev *tdev, void *ctx, unsigned int tid) |
|
{ |
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; |
|
|
|
BUG_ON(tid >= t->ntids); |
|
if (tdev->type == T3A) |
|
(void)cmpxchg(&t->tid_tab[tid].ctx, ctx, NULL); |
|
else { |
|
struct sk_buff *skb; |
|
|
|
skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_ATOMIC); |
|
if (likely(skb)) { |
|
mk_tid_release(skb, tid); |
|
cxgb3_ofld_send(tdev, skb); |
|
t->tid_tab[tid].ctx = NULL; |
|
} else |
|
cxgb3_queue_tid_release(tdev, tid); |
|
} |
|
atomic_dec(&t->tids_in_use); |
|
} |
|
|
|
EXPORT_SYMBOL(cxgb3_remove_tid); |
|
|
|
int cxgb3_alloc_atid(struct t3cdev *tdev, struct cxgb3_client *client, |
|
void *ctx) |
|
{ |
|
int atid = -1; |
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; |
|
|
|
spin_lock_bh(&t->atid_lock); |
|
if (t->afree && |
|
t->atids_in_use + atomic_read(&t->tids_in_use) + MC5_MIN_TIDS <= |
|
t->ntids) { |
|
union active_open_entry *p = t->afree; |
|
|
|
atid = (p - t->atid_tab) + t->atid_base; |
|
t->afree = p->next; |
|
p->t3c_tid.ctx = ctx; |
|
p->t3c_tid.client = client; |
|
t->atids_in_use++; |
|
} |
|
spin_unlock_bh(&t->atid_lock); |
|
return atid; |
|
} |
|
|
|
EXPORT_SYMBOL(cxgb3_alloc_atid); |
|
|
|
int cxgb3_alloc_stid(struct t3cdev *tdev, struct cxgb3_client *client, |
|
void *ctx) |
|
{ |
|
int stid = -1; |
|
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps; |
|
|
|
spin_lock_bh(&t->stid_lock); |
|
if (t->sfree) { |
|
union listen_entry *p = t->sfree; |
|
|
|
stid = (p - t->stid_tab) + t->stid_base; |
|
t->sfree = p->next; |
|
p->t3c_tid.ctx = ctx; |
|
p->t3c_tid.client = client; |
|
t->stids_in_use++; |
|
} |
|
spin_unlock_bh(&t->stid_lock); |
|
return stid; |
|
} |
|
|
|
EXPORT_SYMBOL(cxgb3_alloc_stid); |
|
|
|
/* Get the t3cdev associated with a net_device */ |
|
struct t3cdev *dev2t3cdev(struct net_device *dev) |
|
{ |
|
const struct port_info *pi = netdev_priv(dev); |
|
|
|
return (struct t3cdev *)pi->adapter; |
|
} |
|
|
|
EXPORT_SYMBOL(dev2t3cdev); |
|
|
|
static int do_smt_write_rpl(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
struct cpl_smt_write_rpl *rpl = cplhdr(skb); |
|
|
|
if (rpl->status != CPL_ERR_NONE) |
|
pr_err("Unexpected SMT_WRITE_RPL status %u for entry %u\n", |
|
rpl->status, GET_TID(rpl)); |
|
|
|
return CPL_RET_BUF_DONE; |
|
} |
|
|
|
static int do_l2t_write_rpl(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
struct cpl_l2t_write_rpl *rpl = cplhdr(skb); |
|
|
|
if (rpl->status != CPL_ERR_NONE) |
|
pr_err("Unexpected L2T_WRITE_RPL status %u for entry %u\n", |
|
rpl->status, GET_TID(rpl)); |
|
|
|
return CPL_RET_BUF_DONE; |
|
} |
|
|
|
static int do_rte_write_rpl(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
struct cpl_rte_write_rpl *rpl = cplhdr(skb); |
|
|
|
if (rpl->status != CPL_ERR_NONE) |
|
pr_err("Unexpected RTE_WRITE_RPL status %u for entry %u\n", |
|
rpl->status, GET_TID(rpl)); |
|
|
|
return CPL_RET_BUF_DONE; |
|
} |
|
|
|
static int do_act_open_rpl(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
struct cpl_act_open_rpl *rpl = cplhdr(skb); |
|
unsigned int atid = G_TID(ntohl(rpl->atid)); |
|
struct t3c_tid_entry *t3c_tid; |
|
|
|
t3c_tid = lookup_atid(&(T3C_DATA(dev))->tid_maps, atid); |
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client && |
|
t3c_tid->client->handlers && |
|
t3c_tid->client->handlers[CPL_ACT_OPEN_RPL]) { |
|
return t3c_tid->client->handlers[CPL_ACT_OPEN_RPL] (dev, skb, |
|
t3c_tid-> |
|
ctx); |
|
} else { |
|
pr_err("%s: received clientless CPL command 0x%x\n", |
|
dev->name, CPL_ACT_OPEN_RPL); |
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; |
|
} |
|
} |
|
|
|
static int do_stid_rpl(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
union opcode_tid *p = cplhdr(skb); |
|
unsigned int stid = G_TID(ntohl(p->opcode_tid)); |
|
struct t3c_tid_entry *t3c_tid; |
|
|
|
t3c_tid = lookup_stid(&(T3C_DATA(dev))->tid_maps, stid); |
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && |
|
t3c_tid->client->handlers[p->opcode]) { |
|
return t3c_tid->client->handlers[p->opcode] (dev, skb, |
|
t3c_tid->ctx); |
|
} else { |
|
pr_err("%s: received clientless CPL command 0x%x\n", |
|
dev->name, p->opcode); |
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; |
|
} |
|
} |
|
|
|
static int do_hwtid_rpl(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
union opcode_tid *p = cplhdr(skb); |
|
unsigned int hwtid = G_TID(ntohl(p->opcode_tid)); |
|
struct t3c_tid_entry *t3c_tid; |
|
|
|
t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid); |
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && |
|
t3c_tid->client->handlers[p->opcode]) { |
|
return t3c_tid->client->handlers[p->opcode] |
|
(dev, skb, t3c_tid->ctx); |
|
} else { |
|
pr_err("%s: received clientless CPL command 0x%x\n", |
|
dev->name, p->opcode); |
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; |
|
} |
|
} |
|
|
|
static int do_cr(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
struct cpl_pass_accept_req *req = cplhdr(skb); |
|
unsigned int stid = G_PASS_OPEN_TID(ntohl(req->tos_tid)); |
|
struct tid_info *t = &(T3C_DATA(dev))->tid_maps; |
|
struct t3c_tid_entry *t3c_tid; |
|
unsigned int tid = GET_TID(req); |
|
|
|
if (unlikely(tid >= t->ntids)) { |
|
printk("%s: passive open TID %u too large\n", |
|
dev->name, tid); |
|
t3_fatal_err(tdev2adap(dev)); |
|
return CPL_RET_BUF_DONE; |
|
} |
|
|
|
t3c_tid = lookup_stid(t, stid); |
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && |
|
t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ]) { |
|
return t3c_tid->client->handlers[CPL_PASS_ACCEPT_REQ] |
|
(dev, skb, t3c_tid->ctx); |
|
} else { |
|
pr_err("%s: received clientless CPL command 0x%x\n", |
|
dev->name, CPL_PASS_ACCEPT_REQ); |
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; |
|
} |
|
} |
|
|
|
/* |
|
* Returns an sk_buff for a reply CPL message of size len. If the input |
|
* sk_buff has no other users it is trimmed and reused, otherwise a new buffer |
|
* is allocated. The input skb must be of size at least len. Note that this |
|
* operation does not destroy the original skb data even if it decides to reuse |
|
* the buffer. |
|
*/ |
|
static struct sk_buff *cxgb3_get_cpl_reply_skb(struct sk_buff *skb, size_t len, |
|
gfp_t gfp) |
|
{ |
|
if (likely(!skb_cloned(skb))) { |
|
BUG_ON(skb->len < len); |
|
__skb_trim(skb, len); |
|
skb_get(skb); |
|
} else { |
|
skb = alloc_skb(len, gfp); |
|
if (skb) |
|
__skb_put(skb, len); |
|
} |
|
return skb; |
|
} |
|
|
|
static int do_abort_req_rss(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
union opcode_tid *p = cplhdr(skb); |
|
unsigned int hwtid = G_TID(ntohl(p->opcode_tid)); |
|
struct t3c_tid_entry *t3c_tid; |
|
|
|
t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid); |
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && |
|
t3c_tid->client->handlers[p->opcode]) { |
|
return t3c_tid->client->handlers[p->opcode] |
|
(dev, skb, t3c_tid->ctx); |
|
} else { |
|
struct cpl_abort_req_rss *req = cplhdr(skb); |
|
struct cpl_abort_rpl *rpl; |
|
struct sk_buff *reply_skb; |
|
unsigned int tid = GET_TID(req); |
|
u8 cmd = req->status; |
|
|
|
if (req->status == CPL_ERR_RTX_NEG_ADVICE || |
|
req->status == CPL_ERR_PERSIST_NEG_ADVICE) |
|
goto out; |
|
|
|
reply_skb = cxgb3_get_cpl_reply_skb(skb, |
|
sizeof(struct |
|
cpl_abort_rpl), |
|
GFP_ATOMIC); |
|
|
|
if (!reply_skb) { |
|
printk("do_abort_req_rss: couldn't get skb!\n"); |
|
goto out; |
|
} |
|
reply_skb->priority = CPL_PRIORITY_DATA; |
|
__skb_put(reply_skb, sizeof(struct cpl_abort_rpl)); |
|
rpl = cplhdr(reply_skb); |
|
rpl->wr.wr_hi = |
|
htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL)); |
|
rpl->wr.wr_lo = htonl(V_WR_TID(tid)); |
|
OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, tid)); |
|
rpl->cmd = cmd; |
|
cxgb3_ofld_send(dev, reply_skb); |
|
out: |
|
return CPL_RET_BUF_DONE; |
|
} |
|
} |
|
|
|
static int do_act_establish(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
struct cpl_act_establish *req = cplhdr(skb); |
|
unsigned int atid = G_PASS_OPEN_TID(ntohl(req->tos_tid)); |
|
struct tid_info *t = &(T3C_DATA(dev))->tid_maps; |
|
struct t3c_tid_entry *t3c_tid; |
|
unsigned int tid = GET_TID(req); |
|
|
|
if (unlikely(tid >= t->ntids)) { |
|
printk("%s: active establish TID %u too large\n", |
|
dev->name, tid); |
|
t3_fatal_err(tdev2adap(dev)); |
|
return CPL_RET_BUF_DONE; |
|
} |
|
|
|
t3c_tid = lookup_atid(t, atid); |
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && |
|
t3c_tid->client->handlers[CPL_ACT_ESTABLISH]) { |
|
return t3c_tid->client->handlers[CPL_ACT_ESTABLISH] |
|
(dev, skb, t3c_tid->ctx); |
|
} else { |
|
pr_err("%s: received clientless CPL command 0x%x\n", |
|
dev->name, CPL_ACT_ESTABLISH); |
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; |
|
} |
|
} |
|
|
|
static int do_trace(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
struct cpl_trace_pkt *p = cplhdr(skb); |
|
|
|
skb->protocol = htons(0xffff); |
|
skb->dev = dev->lldev; |
|
skb_pull(skb, sizeof(*p)); |
|
skb_reset_mac_header(skb); |
|
netif_receive_skb(skb); |
|
return 0; |
|
} |
|
|
|
/* |
|
* That skb would better have come from process_responses() where we abuse |
|
* ->priority and ->csum to carry our data. NB: if we get to per-arch |
|
* ->csum, the things might get really interesting here. |
|
*/ |
|
|
|
static inline u32 get_hwtid(struct sk_buff *skb) |
|
{ |
|
return ntohl((__force __be32)skb->priority) >> 8 & 0xfffff; |
|
} |
|
|
|
static inline u32 get_opcode(struct sk_buff *skb) |
|
{ |
|
return G_OPCODE(ntohl((__force __be32)skb->csum)); |
|
} |
|
|
|
static int do_term(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
unsigned int hwtid = get_hwtid(skb); |
|
unsigned int opcode = get_opcode(skb); |
|
struct t3c_tid_entry *t3c_tid; |
|
|
|
t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid); |
|
if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers && |
|
t3c_tid->client->handlers[opcode]) { |
|
return t3c_tid->client->handlers[opcode] (dev, skb, |
|
t3c_tid->ctx); |
|
} else { |
|
pr_err("%s: received clientless CPL command 0x%x\n", |
|
dev->name, opcode); |
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; |
|
} |
|
} |
|
|
|
static int nb_callback(struct notifier_block *self, unsigned long event, |
|
void *ctx) |
|
{ |
|
switch (event) { |
|
case (NETEVENT_NEIGH_UPDATE):{ |
|
cxgb_neigh_update((struct neighbour *)ctx); |
|
break; |
|
} |
|
case (NETEVENT_REDIRECT):{ |
|
struct netevent_redirect *nr = ctx; |
|
cxgb_redirect(nr->old, nr->new, nr->neigh, |
|
nr->daddr); |
|
cxgb_neigh_update(nr->neigh); |
|
break; |
|
} |
|
default: |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static struct notifier_block nb = { |
|
.notifier_call = nb_callback |
|
}; |
|
|
|
/* |
|
* Process a received packet with an unknown/unexpected CPL opcode. |
|
*/ |
|
static int do_bad_cpl(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
pr_err("%s: received bad CPL command 0x%x\n", dev->name, *skb->data); |
|
return CPL_RET_BUF_DONE | CPL_RET_BAD_MSG; |
|
} |
|
|
|
/* |
|
* Handlers for each CPL opcode |
|
*/ |
|
static cpl_handler_func cpl_handlers[NUM_CPL_CMDS]; |
|
|
|
/* |
|
* Add a new handler to the CPL dispatch table. A NULL handler may be supplied |
|
* to unregister an existing handler. |
|
*/ |
|
void t3_register_cpl_handler(unsigned int opcode, cpl_handler_func h) |
|
{ |
|
if (opcode < NUM_CPL_CMDS) |
|
cpl_handlers[opcode] = h ? h : do_bad_cpl; |
|
else |
|
pr_err("T3C: handler registration for opcode %x failed\n", |
|
opcode); |
|
} |
|
|
|
EXPORT_SYMBOL(t3_register_cpl_handler); |
|
|
|
/* |
|
* T3CDEV's receive method. |
|
*/ |
|
static int process_rx(struct t3cdev *dev, struct sk_buff **skbs, int n) |
|
{ |
|
while (n--) { |
|
struct sk_buff *skb = *skbs++; |
|
unsigned int opcode = get_opcode(skb); |
|
int ret = cpl_handlers[opcode] (dev, skb); |
|
|
|
#if VALIDATE_TID |
|
if (ret & CPL_RET_UNKNOWN_TID) { |
|
union opcode_tid *p = cplhdr(skb); |
|
|
|
pr_err("%s: CPL message (opcode %u) had unknown TID %u\n", |
|
dev->name, opcode, G_TID(ntohl(p->opcode_tid))); |
|
} |
|
#endif |
|
if (ret & CPL_RET_BUF_DONE) |
|
kfree_skb(skb); |
|
} |
|
return 0; |
|
} |
|
|
|
/* |
|
* Sends an sk_buff to a T3C driver after dealing with any active network taps. |
|
*/ |
|
int cxgb3_ofld_send(struct t3cdev *dev, struct sk_buff *skb) |
|
{ |
|
int r; |
|
|
|
local_bh_disable(); |
|
r = dev->send(dev, skb); |
|
local_bh_enable(); |
|
return r; |
|
} |
|
|
|
EXPORT_SYMBOL(cxgb3_ofld_send); |
|
|
|
static int is_offloading(struct net_device *dev) |
|
{ |
|
struct adapter *adapter; |
|
int i; |
|
|
|
read_lock_bh(&adapter_list_lock); |
|
list_for_each_entry(adapter, &adapter_list, adapter_list) { |
|
for_each_port(adapter, i) { |
|
if (dev == adapter->port[i]) { |
|
read_unlock_bh(&adapter_list_lock); |
|
return 1; |
|
} |
|
} |
|
} |
|
read_unlock_bh(&adapter_list_lock); |
|
return 0; |
|
} |
|
|
|
static void cxgb_neigh_update(struct neighbour *neigh) |
|
{ |
|
struct net_device *dev; |
|
|
|
if (!neigh) |
|
return; |
|
dev = neigh->dev; |
|
if (dev && (is_offloading(dev))) { |
|
struct t3cdev *tdev = dev2t3cdev(dev); |
|
|
|
BUG_ON(!tdev); |
|
t3_l2t_update(tdev, neigh); |
|
} |
|
} |
|
|
|
static void set_l2t_ix(struct t3cdev *tdev, u32 tid, struct l2t_entry *e) |
|
{ |
|
struct sk_buff *skb; |
|
struct cpl_set_tcb_field *req; |
|
|
|
skb = alloc_skb(sizeof(*req), GFP_ATOMIC); |
|
if (!skb) { |
|
pr_err("%s: cannot allocate skb!\n", __func__); |
|
return; |
|
} |
|
skb->priority = CPL_PRIORITY_CONTROL; |
|
req = skb_put(skb, sizeof(*req)); |
|
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD)); |
|
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid)); |
|
req->reply = 0; |
|
req->cpu_idx = 0; |
|
req->word = htons(W_TCB_L2T_IX); |
|
req->mask = cpu_to_be64(V_TCB_L2T_IX(M_TCB_L2T_IX)); |
|
req->val = cpu_to_be64(V_TCB_L2T_IX(e->idx)); |
|
tdev->send(tdev, skb); |
|
} |
|
|
|
static void cxgb_redirect(struct dst_entry *old, struct dst_entry *new, |
|
struct neighbour *neigh, |
|
const void *daddr) |
|
{ |
|
struct net_device *dev; |
|
struct tid_info *ti; |
|
struct t3cdev *tdev; |
|
u32 tid; |
|
int update_tcb; |
|
struct l2t_entry *e; |
|
struct t3c_tid_entry *te; |
|
|
|
dev = neigh->dev; |
|
|
|
if (!is_offloading(dev)) |
|
return; |
|
tdev = dev2t3cdev(dev); |
|
BUG_ON(!tdev); |
|
|
|
/* Add new L2T entry */ |
|
e = t3_l2t_get(tdev, new, dev, daddr); |
|
if (!e) { |
|
pr_err("%s: couldn't allocate new l2t entry!\n", __func__); |
|
return; |
|
} |
|
|
|
/* Walk tid table and notify clients of dst change. */ |
|
ti = &(T3C_DATA(tdev))->tid_maps; |
|
for (tid = 0; tid < ti->ntids; tid++) { |
|
te = lookup_tid(ti, tid); |
|
BUG_ON(!te); |
|
if (te && te->ctx && te->client && te->client->redirect) { |
|
update_tcb = te->client->redirect(te->ctx, old, new, e); |
|
if (update_tcb) { |
|
rcu_read_lock(); |
|
l2t_hold(L2DATA(tdev), e); |
|
rcu_read_unlock(); |
|
set_l2t_ix(tdev, tid, e); |
|
} |
|
} |
|
} |
|
l2t_release(tdev, e); |
|
} |
|
|
|
/* |
|
* Allocate and initialize the TID tables. Returns 0 on success. |
|
*/ |
|
static int init_tid_tabs(struct tid_info *t, unsigned int ntids, |
|
unsigned int natids, unsigned int nstids, |
|
unsigned int atid_base, unsigned int stid_base) |
|
{ |
|
unsigned long size = ntids * sizeof(*t->tid_tab) + |
|
natids * sizeof(*t->atid_tab) + nstids * sizeof(*t->stid_tab); |
|
|
|
t->tid_tab = kvzalloc(size, GFP_KERNEL); |
|
if (!t->tid_tab) |
|
return -ENOMEM; |
|
|
|
t->stid_tab = (union listen_entry *)&t->tid_tab[ntids]; |
|
t->atid_tab = (union active_open_entry *)&t->stid_tab[nstids]; |
|
t->ntids = ntids; |
|
t->nstids = nstids; |
|
t->stid_base = stid_base; |
|
t->sfree = NULL; |
|
t->natids = natids; |
|
t->atid_base = atid_base; |
|
t->afree = NULL; |
|
t->stids_in_use = t->atids_in_use = 0; |
|
atomic_set(&t->tids_in_use, 0); |
|
spin_lock_init(&t->stid_lock); |
|
spin_lock_init(&t->atid_lock); |
|
|
|
/* |
|
* Setup the free lists for stid_tab and atid_tab. |
|
*/ |
|
if (nstids) { |
|
while (--nstids) |
|
t->stid_tab[nstids - 1].next = &t->stid_tab[nstids]; |
|
t->sfree = t->stid_tab; |
|
} |
|
if (natids) { |
|
while (--natids) |
|
t->atid_tab[natids - 1].next = &t->atid_tab[natids]; |
|
t->afree = t->atid_tab; |
|
} |
|
return 0; |
|
} |
|
|
|
static void free_tid_maps(struct tid_info *t) |
|
{ |
|
kvfree(t->tid_tab); |
|
} |
|
|
|
static inline void add_adapter(struct adapter *adap) |
|
{ |
|
write_lock_bh(&adapter_list_lock); |
|
list_add_tail(&adap->adapter_list, &adapter_list); |
|
write_unlock_bh(&adapter_list_lock); |
|
} |
|
|
|
static inline void remove_adapter(struct adapter *adap) |
|
{ |
|
write_lock_bh(&adapter_list_lock); |
|
list_del(&adap->adapter_list); |
|
write_unlock_bh(&adapter_list_lock); |
|
} |
|
|
|
int cxgb3_offload_activate(struct adapter *adapter) |
|
{ |
|
struct t3cdev *dev = &adapter->tdev; |
|
int natids, err; |
|
struct t3c_data *t; |
|
struct tid_range stid_range, tid_range; |
|
struct mtutab mtutab; |
|
unsigned int l2t_capacity; |
|
struct l2t_data *l2td; |
|
|
|
t = kzalloc(sizeof(*t), GFP_KERNEL); |
|
if (!t) |
|
return -ENOMEM; |
|
|
|
err = -EOPNOTSUPP; |
|
if (dev->ctl(dev, GET_TX_MAX_CHUNK, &t->tx_max_chunk) < 0 || |
|
dev->ctl(dev, GET_MAX_OUTSTANDING_WR, &t->max_wrs) < 0 || |
|
dev->ctl(dev, GET_L2T_CAPACITY, &l2t_capacity) < 0 || |
|
dev->ctl(dev, GET_MTUS, &mtutab) < 0 || |
|
dev->ctl(dev, GET_TID_RANGE, &tid_range) < 0 || |
|
dev->ctl(dev, GET_STID_RANGE, &stid_range) < 0) |
|
goto out_free; |
|
|
|
err = -ENOMEM; |
|
l2td = t3_init_l2t(l2t_capacity); |
|
if (!l2td) |
|
goto out_free; |
|
|
|
natids = min(tid_range.num / 2, MAX_ATIDS); |
|
err = init_tid_tabs(&t->tid_maps, tid_range.num, natids, |
|
stid_range.num, ATID_BASE, stid_range.base); |
|
if (err) |
|
goto out_free_l2t; |
|
|
|
t->mtus = mtutab.mtus; |
|
t->nmtus = mtutab.size; |
|
|
|
INIT_WORK(&t->tid_release_task, t3_process_tid_release_list); |
|
spin_lock_init(&t->tid_release_lock); |
|
INIT_LIST_HEAD(&t->list_node); |
|
t->dev = dev; |
|
|
|
RCU_INIT_POINTER(dev->l2opt, l2td); |
|
T3C_DATA(dev) = t; |
|
dev->recv = process_rx; |
|
dev->neigh_update = t3_l2t_update; |
|
|
|
/* Register netevent handler once */ |
|
if (list_empty(&adapter_list)) |
|
register_netevent_notifier(&nb); |
|
|
|
t->nofail_skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_KERNEL); |
|
t->release_list_incomplete = 0; |
|
|
|
add_adapter(adapter); |
|
return 0; |
|
|
|
out_free_l2t: |
|
kvfree(l2td); |
|
out_free: |
|
kfree(t); |
|
return err; |
|
} |
|
|
|
static void clean_l2_data(struct rcu_head *head) |
|
{ |
|
struct l2t_data *d = container_of(head, struct l2t_data, rcu_head); |
|
kvfree(d); |
|
} |
|
|
|
|
|
void cxgb3_offload_deactivate(struct adapter *adapter) |
|
{ |
|
struct t3cdev *tdev = &adapter->tdev; |
|
struct t3c_data *t = T3C_DATA(tdev); |
|
struct l2t_data *d; |
|
|
|
remove_adapter(adapter); |
|
if (list_empty(&adapter_list)) |
|
unregister_netevent_notifier(&nb); |
|
|
|
free_tid_maps(&t->tid_maps); |
|
T3C_DATA(tdev) = NULL; |
|
rcu_read_lock(); |
|
d = L2DATA(tdev); |
|
rcu_read_unlock(); |
|
RCU_INIT_POINTER(tdev->l2opt, NULL); |
|
call_rcu(&d->rcu_head, clean_l2_data); |
|
kfree_skb(t->nofail_skb); |
|
kfree(t); |
|
} |
|
|
|
static inline void register_tdev(struct t3cdev *tdev) |
|
{ |
|
static int unit; |
|
|
|
mutex_lock(&cxgb3_db_lock); |
|
snprintf(tdev->name, sizeof(tdev->name), "ofld_dev%d", unit++); |
|
list_add_tail(&tdev->ofld_dev_list, &ofld_dev_list); |
|
mutex_unlock(&cxgb3_db_lock); |
|
} |
|
|
|
static inline void unregister_tdev(struct t3cdev *tdev) |
|
{ |
|
mutex_lock(&cxgb3_db_lock); |
|
list_del(&tdev->ofld_dev_list); |
|
mutex_unlock(&cxgb3_db_lock); |
|
} |
|
|
|
static inline int adap2type(struct adapter *adapter) |
|
{ |
|
int type = 0; |
|
|
|
switch (adapter->params.rev) { |
|
case T3_REV_A: |
|
type = T3A; |
|
break; |
|
case T3_REV_B: |
|
case T3_REV_B2: |
|
type = T3B; |
|
break; |
|
case T3_REV_C: |
|
type = T3C; |
|
break; |
|
} |
|
return type; |
|
} |
|
|
|
void cxgb3_adapter_ofld(struct adapter *adapter) |
|
{ |
|
struct t3cdev *tdev = &adapter->tdev; |
|
|
|
INIT_LIST_HEAD(&tdev->ofld_dev_list); |
|
|
|
cxgb3_set_dummy_ops(tdev); |
|
tdev->send = t3_offload_tx; |
|
tdev->ctl = cxgb_offload_ctl; |
|
tdev->type = adap2type(adapter); |
|
|
|
register_tdev(tdev); |
|
} |
|
|
|
void cxgb3_adapter_unofld(struct adapter *adapter) |
|
{ |
|
struct t3cdev *tdev = &adapter->tdev; |
|
|
|
tdev->recv = NULL; |
|
tdev->neigh_update = NULL; |
|
|
|
unregister_tdev(tdev); |
|
} |
|
|
|
void __init cxgb3_offload_init(void) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < NUM_CPL_CMDS; ++i) |
|
cpl_handlers[i] = do_bad_cpl; |
|
|
|
t3_register_cpl_handler(CPL_SMT_WRITE_RPL, do_smt_write_rpl); |
|
t3_register_cpl_handler(CPL_L2T_WRITE_RPL, do_l2t_write_rpl); |
|
t3_register_cpl_handler(CPL_RTE_WRITE_RPL, do_rte_write_rpl); |
|
t3_register_cpl_handler(CPL_PASS_OPEN_RPL, do_stid_rpl); |
|
t3_register_cpl_handler(CPL_CLOSE_LISTSRV_RPL, do_stid_rpl); |
|
t3_register_cpl_handler(CPL_PASS_ACCEPT_REQ, do_cr); |
|
t3_register_cpl_handler(CPL_PASS_ESTABLISH, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_ABORT_RPL_RSS, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_ABORT_RPL, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_RX_URG_NOTIFY, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_RX_DATA, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_TX_DATA_ACK, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_TX_DMA_ACK, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_ACT_OPEN_RPL, do_act_open_rpl); |
|
t3_register_cpl_handler(CPL_PEER_CLOSE, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_CLOSE_CON_RPL, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_ABORT_REQ_RSS, do_abort_req_rss); |
|
t3_register_cpl_handler(CPL_ACT_ESTABLISH, do_act_establish); |
|
t3_register_cpl_handler(CPL_SET_TCB_RPL, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_GET_TCB_RPL, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_RDMA_TERMINATE, do_term); |
|
t3_register_cpl_handler(CPL_RDMA_EC_STATUS, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_TRACE_PKT, do_trace); |
|
t3_register_cpl_handler(CPL_RX_DATA_DDP, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_RX_DDP_COMPLETE, do_hwtid_rpl); |
|
t3_register_cpl_handler(CPL_ISCSI_HDR, do_hwtid_rpl); |
|
}
|
|
|