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path: root/drivers/scsi/fcoe/fcoe_transport.c
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Diffstat (limited to 'drivers/scsi/fcoe/fcoe_transport.c')
-rw-r--r--drivers/scsi/fcoe/fcoe_transport.c160
1 files changed, 102 insertions, 58 deletions
diff --git a/drivers/scsi/fcoe/fcoe_transport.c b/drivers/scsi/fcoe/fcoe_transport.c
index 74277c20f6a5..2f478426f16e 100644
--- a/drivers/scsi/fcoe/fcoe_transport.c
+++ b/drivers/scsi/fcoe/fcoe_transport.c
@@ -1,19 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
* Maintained at www.Open-FCoE.org
*/
@@ -22,6 +10,7 @@
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/netdevice.h>
+#include <linux/ethtool.h>
#include <linux/errno.h>
#include <linux/crc32.h>
#include <scsi/libfcoe.h>
@@ -32,13 +21,13 @@ MODULE_AUTHOR("Open-FCoE.org");
MODULE_DESCRIPTION("FIP discovery protocol and FCoE transport for FCoE HBAs");
MODULE_LICENSE("GPL v2");
-static int fcoe_transport_create(const char *, struct kernel_param *);
-static int fcoe_transport_destroy(const char *, struct kernel_param *);
+static int fcoe_transport_create(const char *, const struct kernel_param *);
+static int fcoe_transport_destroy(const char *, const struct kernel_param *);
static int fcoe_transport_show(char *buffer, const struct kernel_param *kp);
static struct fcoe_transport *fcoe_transport_lookup(struct net_device *device);
static struct fcoe_transport *fcoe_netdev_map_lookup(struct net_device *device);
-static int fcoe_transport_enable(const char *, struct kernel_param *);
-static int fcoe_transport_disable(const char *, struct kernel_param *);
+static int fcoe_transport_enable(const char *, const struct kernel_param *);
+static int fcoe_transport_disable(const char *, const struct kernel_param *);
static int libfcoe_device_notification(struct notifier_block *notifier,
ulong event, void *ptr);
@@ -58,7 +47,7 @@ MODULE_PARM_DESC(show, " Show attached FCoE transports");
module_param_call(create, fcoe_transport_create, NULL,
(void *)FIP_MODE_FABRIC, S_IWUSR);
__MODULE_PARM_TYPE(create, "string");
-MODULE_PARM_DESC(create, " Creates fcoe instance on a ethernet interface");
+MODULE_PARM_DESC(create, " Creates fcoe instance on an ethernet interface");
module_param_call(create_vn2vn, fcoe_transport_create, NULL,
(void *)FIP_MODE_VN2VN, S_IWUSR);
@@ -68,21 +57,56 @@ MODULE_PARM_DESC(create_vn2vn, " Creates a VN_node to VN_node FCoE instance "
module_param_call(destroy, fcoe_transport_destroy, NULL, NULL, S_IWUSR);
__MODULE_PARM_TYPE(destroy, "string");
-MODULE_PARM_DESC(destroy, " Destroys fcoe instance on a ethernet interface");
+MODULE_PARM_DESC(destroy, " Destroys fcoe instance on an ethernet interface");
module_param_call(enable, fcoe_transport_enable, NULL, NULL, S_IWUSR);
__MODULE_PARM_TYPE(enable, "string");
-MODULE_PARM_DESC(enable, " Enables fcoe on a ethernet interface.");
+MODULE_PARM_DESC(enable, " Enables fcoe on an ethernet interface.");
module_param_call(disable, fcoe_transport_disable, NULL, NULL, S_IWUSR);
__MODULE_PARM_TYPE(disable, "string");
-MODULE_PARM_DESC(disable, " Disables fcoe on a ethernet interface.");
+MODULE_PARM_DESC(disable, " Disables fcoe on an ethernet interface.");
/* notification function for packets from net device */
static struct notifier_block libfcoe_notifier = {
.notifier_call = libfcoe_device_notification,
};
+static const struct {
+ u32 fc_port_speed;
+#define SPEED_2000 2000
+#define SPEED_4000 4000
+#define SPEED_8000 8000
+#define SPEED_16000 16000
+#define SPEED_32000 32000
+ u32 eth_port_speed;
+} fcoe_port_speed_mapping[] = {
+ { FC_PORTSPEED_1GBIT, SPEED_1000 },
+ { FC_PORTSPEED_2GBIT, SPEED_2000 },
+ { FC_PORTSPEED_4GBIT, SPEED_4000 },
+ { FC_PORTSPEED_8GBIT, SPEED_8000 },
+ { FC_PORTSPEED_10GBIT, SPEED_10000 },
+ { FC_PORTSPEED_16GBIT, SPEED_16000 },
+ { FC_PORTSPEED_20GBIT, SPEED_20000 },
+ { FC_PORTSPEED_25GBIT, SPEED_25000 },
+ { FC_PORTSPEED_32GBIT, SPEED_32000 },
+ { FC_PORTSPEED_40GBIT, SPEED_40000 },
+ { FC_PORTSPEED_50GBIT, SPEED_50000 },
+ { FC_PORTSPEED_100GBIT, SPEED_100000 },
+};
+
+static inline u32 eth2fc_speed(u32 eth_port_speed)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(fcoe_port_speed_mapping); i++) {
+ if (fcoe_port_speed_mapping[i].eth_port_speed == eth_port_speed)
+ return fcoe_port_speed_mapping[i].fc_port_speed;
+ }
+
+ return FC_PORTSPEED_UNKNOWN;
+}
+
/**
* fcoe_link_speed_update() - Update the supported and actual link speeds
* @lport: The local port to update speeds for
@@ -93,25 +117,40 @@ static struct notifier_block libfcoe_notifier = {
int fcoe_link_speed_update(struct fc_lport *lport)
{
struct net_device *netdev = fcoe_get_netdev(lport);
- struct ethtool_cmd ecmd;
-
- if (!__ethtool_get_settings(netdev, &ecmd)) {
- lport->link_supported_speeds &=
- ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT);
- if (ecmd.supported & (SUPPORTED_1000baseT_Half |
- SUPPORTED_1000baseT_Full))
+ struct ethtool_link_ksettings ecmd;
+
+ if (!__ethtool_get_link_ksettings(netdev, &ecmd)) {
+ lport->link_supported_speeds &= ~(FC_PORTSPEED_1GBIT |
+ FC_PORTSPEED_10GBIT |
+ FC_PORTSPEED_20GBIT |
+ FC_PORTSPEED_40GBIT);
+
+ if (ecmd.link_modes.supported[0] & (
+ SUPPORTED_1000baseT_Half |
+ SUPPORTED_1000baseT_Full |
+ SUPPORTED_1000baseKX_Full))
lport->link_supported_speeds |= FC_PORTSPEED_1GBIT;
- if (ecmd.supported & SUPPORTED_10000baseT_Full)
- lport->link_supported_speeds |=
- FC_PORTSPEED_10GBIT;
- switch (ethtool_cmd_speed(&ecmd)) {
- case SPEED_1000:
- lport->link_speed = FC_PORTSPEED_1GBIT;
- break;
- case SPEED_10000:
- lport->link_speed = FC_PORTSPEED_10GBIT;
- break;
- }
+
+ if (ecmd.link_modes.supported[0] & (
+ SUPPORTED_10000baseT_Full |
+ SUPPORTED_10000baseKX4_Full |
+ SUPPORTED_10000baseKR_Full |
+ SUPPORTED_10000baseR_FEC))
+ lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
+
+ if (ecmd.link_modes.supported[0] & (
+ SUPPORTED_20000baseMLD2_Full |
+ SUPPORTED_20000baseKR2_Full))
+ lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
+
+ if (ecmd.link_modes.supported[0] & (
+ SUPPORTED_40000baseKR4_Full |
+ SUPPORTED_40000baseCR4_Full |
+ SUPPORTED_40000baseSR4_Full |
+ SUPPORTED_40000baseLR4_Full))
+ lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
+
+ lport->link_speed = eth2fc_speed(ecmd.base.speed);
return 0;
}
return -1;
@@ -144,9 +183,9 @@ void __fcoe_get_lesb(struct fc_lport *lport,
memset(lesb, 0, sizeof(*lesb));
for_each_possible_cpu(cpu) {
stats = per_cpu_ptr(lport->stats, cpu);
- lfc += stats->LinkFailureCount;
- vlfc += stats->VLinkFailureCount;
- mdac += stats->MissDiscAdvCount;
+ lfc += READ_ONCE(stats->LinkFailureCount);
+ vlfc += READ_ONCE(stats->VLinkFailureCount);
+ mdac += READ_ONCE(stats->MissDiscAdvCount);
}
lesb->lesb_link_fail = htonl(lfc);
lesb->lesb_vlink_fail = htonl(vlfc);
@@ -270,7 +309,7 @@ EXPORT_SYMBOL_GPL(fcoe_get_wwn);
u32 fcoe_fc_crc(struct fc_frame *fp)
{
struct sk_buff *skb = fp_skb(fp);
- struct skb_frag_struct *frag;
+ skb_frag_t *frag;
unsigned char *data;
unsigned long off, len, clen;
u32 crc;
@@ -280,7 +319,7 @@ u32 fcoe_fc_crc(struct fc_frame *fp)
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
frag = &skb_shinfo(skb)->frags[i];
- off = frag->page_offset;
+ off = skb_frag_off(frag);
len = skb_frag_size(frag);
while (len > 0) {
clen = min(len, PAGE_SIZE - (off & ~PAGE_MASK));
@@ -344,6 +383,7 @@ EXPORT_SYMBOL_GPL(fcoe_clean_pending_queue);
/**
* fcoe_check_wait_queue() - Attempt to clear the transmit backlog
* @lport: The local port whose backlog is to be cleared
+ * @skb: The received FIP packet
*
* This empties the wait_queue, dequeues the head of the wait_queue queue
* and calls fcoe_start_io() for each packet. If all skb have been
@@ -401,13 +441,15 @@ EXPORT_SYMBOL_GPL(fcoe_check_wait_queue);
/**
* fcoe_queue_timer() - The fcoe queue timer
- * @lport: The local port
+ * @t: Timer context use to obtain the FCoE port
*
* Calls fcoe_check_wait_queue on timeout
*/
-void fcoe_queue_timer(ulong lport)
+void fcoe_queue_timer(struct timer_list *t)
{
- fcoe_check_wait_queue((struct fc_lport *)lport, NULL);
+ struct fcoe_port *port = timer_container_of(port, t, timer);
+
+ fcoe_check_wait_queue(port->lport, NULL);
}
EXPORT_SYMBOL_GPL(fcoe_queue_timer);
@@ -632,6 +674,7 @@ static void fcoe_del_netdev_mapping(struct net_device *netdev)
/**
* fcoe_netdev_map_lookup - find the fcoe transport that matches the netdev on which
* it was created
+ * @netdev: The net device that the FCoE interface is on
*
* Returns : ptr to the fcoe transport that supports this netdev or NULL
* if not found.
@@ -668,7 +711,7 @@ static struct net_device *fcoe_if_to_netdev(const char *buffer)
char ifname[IFNAMSIZ + 2];
if (buffer) {
- strlcpy(ifname, buffer, IFNAMSIZ);
+ strscpy(ifname, buffer, IFNAMSIZ);
cp = ifname + strlen(ifname);
while (--cp >= ifname && *cp == '\n')
*cp = '\0';
@@ -702,8 +745,7 @@ static int libfcoe_device_notification(struct notifier_block *notifier,
return NOTIFY_OK;
}
-ssize_t fcoe_ctlr_create_store(struct bus_type *bus,
- const char *buf, size_t count)
+ssize_t fcoe_ctlr_create_store(const char *buf, size_t count)
{
struct net_device *netdev = NULL;
struct fcoe_transport *ft = NULL;
@@ -765,8 +807,7 @@ out_nodev:
return count;
}
-ssize_t fcoe_ctlr_destroy_store(struct bus_type *bus,
- const char *buf, size_t count)
+ssize_t fcoe_ctlr_destroy_store(const char *buf, size_t count)
{
int rc = -ENODEV;
struct net_device *netdev = NULL;
@@ -803,7 +844,6 @@ out_nodev:
mutex_unlock(&ft_mutex);
return rc;
}
-EXPORT_SYMBOL(fcoe_ctlr_destroy_store);
/**
* fcoe_transport_create() - Create a fcoe interface
@@ -815,12 +855,13 @@ EXPORT_SYMBOL(fcoe_ctlr_destroy_store);
*
* Returns: 0 for success
*/
-static int fcoe_transport_create(const char *buffer, struct kernel_param *kp)
+static int fcoe_transport_create(const char *buffer,
+ const struct kernel_param *kp)
{
int rc = -ENODEV;
struct net_device *netdev = NULL;
struct fcoe_transport *ft = NULL;
- enum fip_state fip_mode = (enum fip_state)(long)kp->arg;
+ enum fip_mode fip_mode = (enum fip_mode)(uintptr_t)kp->arg;
mutex_lock(&ft_mutex);
@@ -880,7 +921,8 @@ out_nodev:
*
* Returns: 0 for success
*/
-static int fcoe_transport_destroy(const char *buffer, struct kernel_param *kp)
+static int fcoe_transport_destroy(const char *buffer,
+ const struct kernel_param *kp)
{
int rc = -ENODEV;
struct net_device *netdev = NULL;
@@ -924,7 +966,8 @@ out_nodev:
*
* Returns: 0 for success
*/
-static int fcoe_transport_disable(const char *buffer, struct kernel_param *kp)
+static int fcoe_transport_disable(const char *buffer,
+ const struct kernel_param *kp)
{
int rc = -ENODEV;
struct net_device *netdev = NULL;
@@ -958,7 +1001,8 @@ out_nodev:
*
* Returns: 0 for success
*/
-static int fcoe_transport_enable(const char *buffer, struct kernel_param *kp)
+static int fcoe_transport_enable(const char *buffer,
+ const struct kernel_param *kp)
{
int rc = -ENODEV;
struct net_device *netdev = NULL;
generated by cgit (git 2.34.1) at 2025-12-26 01:38:30 +0000