mirror of https://gitee.com/openkylin/linux.git
1409 lines
38 KiB
C
1409 lines
38 KiB
C
/*
|
|
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
|
*
|
|
* This program is free software; you may redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
#include <linux/errno.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/if_ether.h>
|
|
#include <linux/if_vlan.h>
|
|
#include <linux/workqueue.h>
|
|
#include <scsi/fc/fc_fip.h>
|
|
#include <scsi/fc/fc_els.h>
|
|
#include <scsi/fc/fc_fcoe.h>
|
|
#include <scsi/fc_frame.h>
|
|
#include <scsi/libfc.h>
|
|
#include "fnic_io.h"
|
|
#include "fnic.h"
|
|
#include "fnic_fip.h"
|
|
#include "cq_enet_desc.h"
|
|
#include "cq_exch_desc.h"
|
|
|
|
static u8 fcoe_all_fcfs[ETH_ALEN] = FIP_ALL_FCF_MACS;
|
|
struct workqueue_struct *fnic_fip_queue;
|
|
struct workqueue_struct *fnic_event_queue;
|
|
|
|
static void fnic_set_eth_mode(struct fnic *);
|
|
static void fnic_fcoe_send_vlan_req(struct fnic *fnic);
|
|
static void fnic_fcoe_start_fcf_disc(struct fnic *fnic);
|
|
static void fnic_fcoe_process_vlan_resp(struct fnic *fnic, struct sk_buff *);
|
|
static int fnic_fcoe_vlan_check(struct fnic *fnic, u16 flag);
|
|
static int fnic_fcoe_handle_fip_frame(struct fnic *fnic, struct sk_buff *skb);
|
|
|
|
void fnic_handle_link(struct work_struct *work)
|
|
{
|
|
struct fnic *fnic = container_of(work, struct fnic, link_work);
|
|
unsigned long flags;
|
|
int old_link_status;
|
|
u32 old_link_down_cnt;
|
|
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
|
|
if (fnic->stop_rx_link_events) {
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
return;
|
|
}
|
|
|
|
old_link_down_cnt = fnic->link_down_cnt;
|
|
old_link_status = fnic->link_status;
|
|
fnic->link_status = vnic_dev_link_status(fnic->vdev);
|
|
fnic->link_down_cnt = vnic_dev_link_down_cnt(fnic->vdev);
|
|
|
|
atomic64_set(&fnic->fnic_stats.misc_stats.current_port_speed,
|
|
vnic_dev_port_speed(fnic->vdev));
|
|
shost_printk(KERN_INFO, fnic->lport->host, "Current vnic speed set to : %llu\n",
|
|
(u64)atomic64_read(
|
|
&fnic->fnic_stats.misc_stats.current_port_speed));
|
|
|
|
switch (vnic_dev_port_speed(fnic->vdev)) {
|
|
case DCEM_PORTSPEED_10G:
|
|
fc_host_speed(fnic->lport->host) = FC_PORTSPEED_10GBIT;
|
|
fnic->lport->link_supported_speeds = FC_PORTSPEED_10GBIT;
|
|
break;
|
|
case DCEM_PORTSPEED_20G:
|
|
fc_host_speed(fnic->lport->host) = FC_PORTSPEED_20GBIT;
|
|
fnic->lport->link_supported_speeds = FC_PORTSPEED_20GBIT;
|
|
break;
|
|
case DCEM_PORTSPEED_25G:
|
|
fc_host_speed(fnic->lport->host) = FC_PORTSPEED_25GBIT;
|
|
fnic->lport->link_supported_speeds = FC_PORTSPEED_25GBIT;
|
|
break;
|
|
case DCEM_PORTSPEED_40G:
|
|
case DCEM_PORTSPEED_4x10G:
|
|
fc_host_speed(fnic->lport->host) = FC_PORTSPEED_40GBIT;
|
|
fnic->lport->link_supported_speeds = FC_PORTSPEED_40GBIT;
|
|
break;
|
|
case DCEM_PORTSPEED_100G:
|
|
fc_host_speed(fnic->lport->host) = FC_PORTSPEED_100GBIT;
|
|
fnic->lport->link_supported_speeds = FC_PORTSPEED_100GBIT;
|
|
break;
|
|
default:
|
|
fc_host_speed(fnic->lport->host) = FC_PORTSPEED_UNKNOWN;
|
|
fnic->lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
|
|
break;
|
|
}
|
|
|
|
if (old_link_status == fnic->link_status) {
|
|
if (!fnic->link_status) {
|
|
/* DOWN -> DOWN */
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
fnic_fc_trace_set_data(fnic->lport->host->host_no,
|
|
FNIC_FC_LE, "Link Status: DOWN->DOWN",
|
|
strlen("Link Status: DOWN->DOWN"));
|
|
} else {
|
|
if (old_link_down_cnt != fnic->link_down_cnt) {
|
|
/* UP -> DOWN -> UP */
|
|
fnic->lport->host_stats.link_failure_count++;
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
fnic_fc_trace_set_data(
|
|
fnic->lport->host->host_no,
|
|
FNIC_FC_LE,
|
|
"Link Status:UP_DOWN_UP",
|
|
strlen("Link_Status:UP_DOWN_UP")
|
|
);
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"link down\n");
|
|
fcoe_ctlr_link_down(&fnic->ctlr);
|
|
if (fnic->config.flags & VFCF_FIP_CAPABLE) {
|
|
/* start FCoE VLAN discovery */
|
|
fnic_fc_trace_set_data(
|
|
fnic->lport->host->host_no,
|
|
FNIC_FC_LE,
|
|
"Link Status: UP_DOWN_UP_VLAN",
|
|
strlen(
|
|
"Link Status: UP_DOWN_UP_VLAN")
|
|
);
|
|
fnic_fcoe_send_vlan_req(fnic);
|
|
return;
|
|
}
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"link up\n");
|
|
fcoe_ctlr_link_up(&fnic->ctlr);
|
|
} else {
|
|
/* UP -> UP */
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
fnic_fc_trace_set_data(
|
|
fnic->lport->host->host_no, FNIC_FC_LE,
|
|
"Link Status: UP_UP",
|
|
strlen("Link Status: UP_UP"));
|
|
}
|
|
}
|
|
} else if (fnic->link_status) {
|
|
/* DOWN -> UP */
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
if (fnic->config.flags & VFCF_FIP_CAPABLE) {
|
|
/* start FCoE VLAN discovery */
|
|
fnic_fc_trace_set_data(
|
|
fnic->lport->host->host_no,
|
|
FNIC_FC_LE, "Link Status: DOWN_UP_VLAN",
|
|
strlen("Link Status: DOWN_UP_VLAN"));
|
|
fnic_fcoe_send_vlan_req(fnic);
|
|
return;
|
|
}
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link up\n");
|
|
fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_LE,
|
|
"Link Status: DOWN_UP", strlen("Link Status: DOWN_UP"));
|
|
fcoe_ctlr_link_up(&fnic->ctlr);
|
|
} else {
|
|
/* UP -> DOWN */
|
|
fnic->lport->host_stats.link_failure_count++;
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link down\n");
|
|
fnic_fc_trace_set_data(
|
|
fnic->lport->host->host_no, FNIC_FC_LE,
|
|
"Link Status: UP_DOWN",
|
|
strlen("Link Status: UP_DOWN"));
|
|
if (fnic->config.flags & VFCF_FIP_CAPABLE) {
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"deleting fip-timer during link-down\n");
|
|
del_timer_sync(&fnic->fip_timer);
|
|
}
|
|
fcoe_ctlr_link_down(&fnic->ctlr);
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
* This function passes incoming fabric frames to libFC
|
|
*/
|
|
void fnic_handle_frame(struct work_struct *work)
|
|
{
|
|
struct fnic *fnic = container_of(work, struct fnic, frame_work);
|
|
struct fc_lport *lp = fnic->lport;
|
|
unsigned long flags;
|
|
struct sk_buff *skb;
|
|
struct fc_frame *fp;
|
|
|
|
while ((skb = skb_dequeue(&fnic->frame_queue))) {
|
|
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
if (fnic->stop_rx_link_events) {
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
fp = (struct fc_frame *)skb;
|
|
|
|
/*
|
|
* If we're in a transitional state, just re-queue and return.
|
|
* The queue will be serviced when we get to a stable state.
|
|
*/
|
|
if (fnic->state != FNIC_IN_FC_MODE &&
|
|
fnic->state != FNIC_IN_ETH_MODE) {
|
|
skb_queue_head(&fnic->frame_queue, skb);
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
return;
|
|
}
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
|
|
fc_exch_recv(lp, fp);
|
|
}
|
|
}
|
|
|
|
void fnic_fcoe_evlist_free(struct fnic *fnic)
|
|
{
|
|
struct fnic_event *fevt = NULL;
|
|
struct fnic_event *next = NULL;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
if (list_empty(&fnic->evlist)) {
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
return;
|
|
}
|
|
|
|
list_for_each_entry_safe(fevt, next, &fnic->evlist, list) {
|
|
list_del(&fevt->list);
|
|
kfree(fevt);
|
|
}
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
}
|
|
|
|
void fnic_handle_event(struct work_struct *work)
|
|
{
|
|
struct fnic *fnic = container_of(work, struct fnic, event_work);
|
|
struct fnic_event *fevt = NULL;
|
|
struct fnic_event *next = NULL;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
if (list_empty(&fnic->evlist)) {
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
return;
|
|
}
|
|
|
|
list_for_each_entry_safe(fevt, next, &fnic->evlist, list) {
|
|
if (fnic->stop_rx_link_events) {
|
|
list_del(&fevt->list);
|
|
kfree(fevt);
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
return;
|
|
}
|
|
/*
|
|
* If we're in a transitional state, just re-queue and return.
|
|
* The queue will be serviced when we get to a stable state.
|
|
*/
|
|
if (fnic->state != FNIC_IN_FC_MODE &&
|
|
fnic->state != FNIC_IN_ETH_MODE) {
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
return;
|
|
}
|
|
|
|
list_del(&fevt->list);
|
|
switch (fevt->event) {
|
|
case FNIC_EVT_START_VLAN_DISC:
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
fnic_fcoe_send_vlan_req(fnic);
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
break;
|
|
case FNIC_EVT_START_FCF_DISC:
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"Start FCF Discovery\n");
|
|
fnic_fcoe_start_fcf_disc(fnic);
|
|
break;
|
|
default:
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"Unknown event 0x%x\n", fevt->event);
|
|
break;
|
|
}
|
|
kfree(fevt);
|
|
}
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
}
|
|
|
|
/**
|
|
* Check if the Received FIP FLOGI frame is rejected
|
|
* @fip: The FCoE controller that received the frame
|
|
* @skb: The received FIP frame
|
|
*
|
|
* Returns non-zero if the frame is rejected with unsupported cmd with
|
|
* insufficient resource els explanation.
|
|
*/
|
|
static inline int is_fnic_fip_flogi_reject(struct fcoe_ctlr *fip,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct fc_lport *lport = fip->lp;
|
|
struct fip_header *fiph;
|
|
struct fc_frame_header *fh = NULL;
|
|
struct fip_desc *desc;
|
|
struct fip_encaps *els;
|
|
enum fip_desc_type els_dtype = 0;
|
|
u16 op;
|
|
u8 els_op;
|
|
u8 sub;
|
|
|
|
size_t els_len = 0;
|
|
size_t rlen;
|
|
size_t dlen = 0;
|
|
|
|
if (skb_linearize(skb))
|
|
return 0;
|
|
|
|
if (skb->len < sizeof(*fiph))
|
|
return 0;
|
|
|
|
fiph = (struct fip_header *)skb->data;
|
|
op = ntohs(fiph->fip_op);
|
|
sub = fiph->fip_subcode;
|
|
|
|
if (op != FIP_OP_LS)
|
|
return 0;
|
|
|
|
if (sub != FIP_SC_REP)
|
|
return 0;
|
|
|
|
rlen = ntohs(fiph->fip_dl_len) * 4;
|
|
if (rlen + sizeof(*fiph) > skb->len)
|
|
return 0;
|
|
|
|
desc = (struct fip_desc *)(fiph + 1);
|
|
dlen = desc->fip_dlen * FIP_BPW;
|
|
|
|
if (desc->fip_dtype == FIP_DT_FLOGI) {
|
|
|
|
if (dlen < sizeof(*els) + sizeof(*fh) + 1)
|
|
return 0;
|
|
|
|
els_len = dlen - sizeof(*els);
|
|
els = (struct fip_encaps *)desc;
|
|
fh = (struct fc_frame_header *)(els + 1);
|
|
els_dtype = desc->fip_dtype;
|
|
|
|
if (!fh)
|
|
return 0;
|
|
|
|
/*
|
|
* ELS command code, reason and explanation should be = Reject,
|
|
* unsupported command and insufficient resource
|
|
*/
|
|
els_op = *(u8 *)(fh + 1);
|
|
if (els_op == ELS_LS_RJT) {
|
|
shost_printk(KERN_INFO, lport->host,
|
|
"Flogi Request Rejected by Switch\n");
|
|
return 1;
|
|
}
|
|
shost_printk(KERN_INFO, lport->host,
|
|
"Flogi Request Accepted by Switch\n");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void fnic_fcoe_send_vlan_req(struct fnic *fnic)
|
|
{
|
|
struct fcoe_ctlr *fip = &fnic->ctlr;
|
|
struct fnic_stats *fnic_stats = &fnic->fnic_stats;
|
|
struct sk_buff *skb;
|
|
char *eth_fr;
|
|
int fr_len;
|
|
struct fip_vlan *vlan;
|
|
u64 vlan_tov;
|
|
|
|
fnic_fcoe_reset_vlans(fnic);
|
|
fnic->set_vlan(fnic, 0);
|
|
|
|
if (printk_ratelimit())
|
|
FNIC_FCS_DBG(KERN_INFO, fnic->lport->host,
|
|
"Sending VLAN request...\n");
|
|
|
|
skb = dev_alloc_skb(sizeof(struct fip_vlan));
|
|
if (!skb)
|
|
return;
|
|
|
|
fr_len = sizeof(*vlan);
|
|
eth_fr = (char *)skb->data;
|
|
vlan = (struct fip_vlan *)eth_fr;
|
|
|
|
memset(vlan, 0, sizeof(*vlan));
|
|
memcpy(vlan->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
|
|
memcpy(vlan->eth.h_dest, fcoe_all_fcfs, ETH_ALEN);
|
|
vlan->eth.h_proto = htons(ETH_P_FIP);
|
|
|
|
vlan->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
|
|
vlan->fip.fip_op = htons(FIP_OP_VLAN);
|
|
vlan->fip.fip_subcode = FIP_SC_VL_REQ;
|
|
vlan->fip.fip_dl_len = htons(sizeof(vlan->desc) / FIP_BPW);
|
|
|
|
vlan->desc.mac.fd_desc.fip_dtype = FIP_DT_MAC;
|
|
vlan->desc.mac.fd_desc.fip_dlen = sizeof(vlan->desc.mac) / FIP_BPW;
|
|
memcpy(&vlan->desc.mac.fd_mac, fip->ctl_src_addr, ETH_ALEN);
|
|
|
|
vlan->desc.wwnn.fd_desc.fip_dtype = FIP_DT_NAME;
|
|
vlan->desc.wwnn.fd_desc.fip_dlen = sizeof(vlan->desc.wwnn) / FIP_BPW;
|
|
put_unaligned_be64(fip->lp->wwnn, &vlan->desc.wwnn.fd_wwn);
|
|
atomic64_inc(&fnic_stats->vlan_stats.vlan_disc_reqs);
|
|
|
|
skb_put(skb, sizeof(*vlan));
|
|
skb->protocol = htons(ETH_P_FIP);
|
|
skb_reset_mac_header(skb);
|
|
skb_reset_network_header(skb);
|
|
fip->send(fip, skb);
|
|
|
|
/* set a timer so that we can retry if there no response */
|
|
vlan_tov = jiffies + msecs_to_jiffies(FCOE_CTLR_FIPVLAN_TOV);
|
|
mod_timer(&fnic->fip_timer, round_jiffies(vlan_tov));
|
|
}
|
|
|
|
static void fnic_fcoe_process_vlan_resp(struct fnic *fnic, struct sk_buff *skb)
|
|
{
|
|
struct fcoe_ctlr *fip = &fnic->ctlr;
|
|
struct fip_header *fiph;
|
|
struct fip_desc *desc;
|
|
struct fnic_stats *fnic_stats = &fnic->fnic_stats;
|
|
u16 vid;
|
|
size_t rlen;
|
|
size_t dlen;
|
|
struct fcoe_vlan *vlan;
|
|
u64 sol_time;
|
|
unsigned long flags;
|
|
|
|
FNIC_FCS_DBG(KERN_INFO, fnic->lport->host,
|
|
"Received VLAN response...\n");
|
|
|
|
fiph = (struct fip_header *) skb->data;
|
|
|
|
FNIC_FCS_DBG(KERN_INFO, fnic->lport->host,
|
|
"Received VLAN response... OP 0x%x SUB_OP 0x%x\n",
|
|
ntohs(fiph->fip_op), fiph->fip_subcode);
|
|
|
|
rlen = ntohs(fiph->fip_dl_len) * 4;
|
|
fnic_fcoe_reset_vlans(fnic);
|
|
spin_lock_irqsave(&fnic->vlans_lock, flags);
|
|
desc = (struct fip_desc *)(fiph + 1);
|
|
while (rlen > 0) {
|
|
dlen = desc->fip_dlen * FIP_BPW;
|
|
switch (desc->fip_dtype) {
|
|
case FIP_DT_VLAN:
|
|
vid = ntohs(((struct fip_vlan_desc *)desc)->fd_vlan);
|
|
shost_printk(KERN_INFO, fnic->lport->host,
|
|
"process_vlan_resp: FIP VLAN %d\n", vid);
|
|
vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC);
|
|
if (!vlan) {
|
|
/* retry from timer */
|
|
spin_unlock_irqrestore(&fnic->vlans_lock,
|
|
flags);
|
|
goto out;
|
|
}
|
|
vlan->vid = vid & 0x0fff;
|
|
vlan->state = FIP_VLAN_AVAIL;
|
|
list_add_tail(&vlan->list, &fnic->vlans);
|
|
break;
|
|
}
|
|
desc = (struct fip_desc *)((char *)desc + dlen);
|
|
rlen -= dlen;
|
|
}
|
|
|
|
/* any VLAN descriptors present ? */
|
|
if (list_empty(&fnic->vlans)) {
|
|
/* retry from timer */
|
|
atomic64_inc(&fnic_stats->vlan_stats.resp_withno_vlanID);
|
|
FNIC_FCS_DBG(KERN_INFO, fnic->lport->host,
|
|
"No VLAN descriptors in FIP VLAN response\n");
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
goto out;
|
|
}
|
|
|
|
vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list);
|
|
fnic->set_vlan(fnic, vlan->vid);
|
|
vlan->state = FIP_VLAN_SENT; /* sent now */
|
|
vlan->sol_count++;
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
|
|
/* start the solicitation */
|
|
fcoe_ctlr_link_up(fip);
|
|
|
|
sol_time = jiffies + msecs_to_jiffies(FCOE_CTLR_START_DELAY);
|
|
mod_timer(&fnic->fip_timer, round_jiffies(sol_time));
|
|
out:
|
|
return;
|
|
}
|
|
|
|
static void fnic_fcoe_start_fcf_disc(struct fnic *fnic)
|
|
{
|
|
unsigned long flags;
|
|
struct fcoe_vlan *vlan;
|
|
u64 sol_time;
|
|
|
|
spin_lock_irqsave(&fnic->vlans_lock, flags);
|
|
vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list);
|
|
fnic->set_vlan(fnic, vlan->vid);
|
|
vlan->state = FIP_VLAN_SENT; /* sent now */
|
|
vlan->sol_count = 1;
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
|
|
/* start the solicitation */
|
|
fcoe_ctlr_link_up(&fnic->ctlr);
|
|
|
|
sol_time = jiffies + msecs_to_jiffies(FCOE_CTLR_START_DELAY);
|
|
mod_timer(&fnic->fip_timer, round_jiffies(sol_time));
|
|
}
|
|
|
|
static int fnic_fcoe_vlan_check(struct fnic *fnic, u16 flag)
|
|
{
|
|
unsigned long flags;
|
|
struct fcoe_vlan *fvlan;
|
|
|
|
spin_lock_irqsave(&fnic->vlans_lock, flags);
|
|
if (list_empty(&fnic->vlans)) {
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
return -EINVAL;
|
|
}
|
|
|
|
fvlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list);
|
|
if (fvlan->state == FIP_VLAN_USED) {
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
if (fvlan->state == FIP_VLAN_SENT) {
|
|
fvlan->state = FIP_VLAN_USED;
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
return 0;
|
|
}
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static void fnic_event_enq(struct fnic *fnic, enum fnic_evt ev)
|
|
{
|
|
struct fnic_event *fevt;
|
|
unsigned long flags;
|
|
|
|
fevt = kmalloc(sizeof(*fevt), GFP_ATOMIC);
|
|
if (!fevt)
|
|
return;
|
|
|
|
fevt->fnic = fnic;
|
|
fevt->event = ev;
|
|
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
list_add_tail(&fevt->list, &fnic->evlist);
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
|
|
schedule_work(&fnic->event_work);
|
|
}
|
|
|
|
static int fnic_fcoe_handle_fip_frame(struct fnic *fnic, struct sk_buff *skb)
|
|
{
|
|
struct fip_header *fiph;
|
|
int ret = 1;
|
|
u16 op;
|
|
u8 sub;
|
|
|
|
if (!skb || !(skb->data))
|
|
return -1;
|
|
|
|
if (skb_linearize(skb))
|
|
goto drop;
|
|
|
|
fiph = (struct fip_header *)skb->data;
|
|
op = ntohs(fiph->fip_op);
|
|
sub = fiph->fip_subcode;
|
|
|
|
if (FIP_VER_DECAPS(fiph->fip_ver) != FIP_VER)
|
|
goto drop;
|
|
|
|
if (ntohs(fiph->fip_dl_len) * FIP_BPW + sizeof(*fiph) > skb->len)
|
|
goto drop;
|
|
|
|
if (op == FIP_OP_DISC && sub == FIP_SC_ADV) {
|
|
if (fnic_fcoe_vlan_check(fnic, ntohs(fiph->fip_flags)))
|
|
goto drop;
|
|
/* pass it on to fcoe */
|
|
ret = 1;
|
|
} else if (op == FIP_OP_VLAN && sub == FIP_SC_VL_NOTE) {
|
|
/* set the vlan as used */
|
|
fnic_fcoe_process_vlan_resp(fnic, skb);
|
|
ret = 0;
|
|
} else if (op == FIP_OP_CTRL && sub == FIP_SC_CLR_VLINK) {
|
|
/* received CVL request, restart vlan disc */
|
|
fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC);
|
|
/* pass it on to fcoe */
|
|
ret = 1;
|
|
}
|
|
drop:
|
|
return ret;
|
|
}
|
|
|
|
void fnic_handle_fip_frame(struct work_struct *work)
|
|
{
|
|
struct fnic *fnic = container_of(work, struct fnic, fip_frame_work);
|
|
struct fnic_stats *fnic_stats = &fnic->fnic_stats;
|
|
unsigned long flags;
|
|
struct sk_buff *skb;
|
|
struct ethhdr *eh;
|
|
|
|
while ((skb = skb_dequeue(&fnic->fip_frame_queue))) {
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
if (fnic->stop_rx_link_events) {
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
/*
|
|
* If we're in a transitional state, just re-queue and return.
|
|
* The queue will be serviced when we get to a stable state.
|
|
*/
|
|
if (fnic->state != FNIC_IN_FC_MODE &&
|
|
fnic->state != FNIC_IN_ETH_MODE) {
|
|
skb_queue_head(&fnic->fip_frame_queue, skb);
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
return;
|
|
}
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
eh = (struct ethhdr *)skb->data;
|
|
if (eh->h_proto == htons(ETH_P_FIP)) {
|
|
skb_pull(skb, sizeof(*eh));
|
|
if (fnic_fcoe_handle_fip_frame(fnic, skb) <= 0) {
|
|
dev_kfree_skb(skb);
|
|
continue;
|
|
}
|
|
/*
|
|
* If there's FLOGI rejects - clear all
|
|
* fcf's & restart from scratch
|
|
*/
|
|
if (is_fnic_fip_flogi_reject(&fnic->ctlr, skb)) {
|
|
atomic64_inc(
|
|
&fnic_stats->vlan_stats.flogi_rejects);
|
|
shost_printk(KERN_INFO, fnic->lport->host,
|
|
"Trigger a Link down - VLAN Disc\n");
|
|
fcoe_ctlr_link_down(&fnic->ctlr);
|
|
/* start FCoE VLAN discovery */
|
|
fnic_fcoe_send_vlan_req(fnic);
|
|
dev_kfree_skb(skb);
|
|
continue;
|
|
}
|
|
fcoe_ctlr_recv(&fnic->ctlr, skb);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* fnic_import_rq_eth_pkt() - handle received FCoE or FIP frame.
|
|
* @fnic: fnic instance.
|
|
* @skb: Ethernet Frame.
|
|
*/
|
|
static inline int fnic_import_rq_eth_pkt(struct fnic *fnic, struct sk_buff *skb)
|
|
{
|
|
struct fc_frame *fp;
|
|
struct ethhdr *eh;
|
|
struct fcoe_hdr *fcoe_hdr;
|
|
struct fcoe_crc_eof *ft;
|
|
|
|
/*
|
|
* Undo VLAN encapsulation if present.
|
|
*/
|
|
eh = (struct ethhdr *)skb->data;
|
|
if (eh->h_proto == htons(ETH_P_8021Q)) {
|
|
memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
|
|
eh = skb_pull(skb, VLAN_HLEN);
|
|
skb_reset_mac_header(skb);
|
|
}
|
|
if (eh->h_proto == htons(ETH_P_FIP)) {
|
|
if (!(fnic->config.flags & VFCF_FIP_CAPABLE)) {
|
|
printk(KERN_ERR "Dropped FIP frame, as firmware "
|
|
"uses non-FIP mode, Enable FIP "
|
|
"using UCSM\n");
|
|
goto drop;
|
|
}
|
|
if ((fnic_fc_trace_set_data(fnic->lport->host->host_no,
|
|
FNIC_FC_RECV|0x80, (char *)skb->data, skb->len)) != 0) {
|
|
printk(KERN_ERR "fnic ctlr frame trace error!!!");
|
|
}
|
|
skb_queue_tail(&fnic->fip_frame_queue, skb);
|
|
queue_work(fnic_fip_queue, &fnic->fip_frame_work);
|
|
return 1; /* let caller know packet was used */
|
|
}
|
|
if (eh->h_proto != htons(ETH_P_FCOE))
|
|
goto drop;
|
|
skb_set_network_header(skb, sizeof(*eh));
|
|
skb_pull(skb, sizeof(*eh));
|
|
|
|
fcoe_hdr = (struct fcoe_hdr *)skb->data;
|
|
if (FC_FCOE_DECAPS_VER(fcoe_hdr) != FC_FCOE_VER)
|
|
goto drop;
|
|
|
|
fp = (struct fc_frame *)skb;
|
|
fc_frame_init(fp);
|
|
fr_sof(fp) = fcoe_hdr->fcoe_sof;
|
|
skb_pull(skb, sizeof(struct fcoe_hdr));
|
|
skb_reset_transport_header(skb);
|
|
|
|
ft = (struct fcoe_crc_eof *)(skb->data + skb->len - sizeof(*ft));
|
|
fr_eof(fp) = ft->fcoe_eof;
|
|
skb_trim(skb, skb->len - sizeof(*ft));
|
|
return 0;
|
|
drop:
|
|
dev_kfree_skb_irq(skb);
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* fnic_update_mac_locked() - set data MAC address and filters.
|
|
* @fnic: fnic instance.
|
|
* @new: newly-assigned FCoE MAC address.
|
|
*
|
|
* Called with the fnic lock held.
|
|
*/
|
|
void fnic_update_mac_locked(struct fnic *fnic, u8 *new)
|
|
{
|
|
u8 *ctl = fnic->ctlr.ctl_src_addr;
|
|
u8 *data = fnic->data_src_addr;
|
|
|
|
if (is_zero_ether_addr(new))
|
|
new = ctl;
|
|
if (ether_addr_equal(data, new))
|
|
return;
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "update_mac %pM\n", new);
|
|
if (!is_zero_ether_addr(data) && !ether_addr_equal(data, ctl))
|
|
vnic_dev_del_addr(fnic->vdev, data);
|
|
memcpy(data, new, ETH_ALEN);
|
|
if (!ether_addr_equal(new, ctl))
|
|
vnic_dev_add_addr(fnic->vdev, new);
|
|
}
|
|
|
|
/**
|
|
* fnic_update_mac() - set data MAC address and filters.
|
|
* @lport: local port.
|
|
* @new: newly-assigned FCoE MAC address.
|
|
*/
|
|
void fnic_update_mac(struct fc_lport *lport, u8 *new)
|
|
{
|
|
struct fnic *fnic = lport_priv(lport);
|
|
|
|
spin_lock_irq(&fnic->fnic_lock);
|
|
fnic_update_mac_locked(fnic, new);
|
|
spin_unlock_irq(&fnic->fnic_lock);
|
|
}
|
|
|
|
/**
|
|
* fnic_set_port_id() - set the port_ID after successful FLOGI.
|
|
* @lport: local port.
|
|
* @port_id: assigned FC_ID.
|
|
* @fp: received frame containing the FLOGI accept or NULL.
|
|
*
|
|
* This is called from libfc when a new FC_ID has been assigned.
|
|
* This causes us to reset the firmware to FC_MODE and setup the new MAC
|
|
* address and FC_ID.
|
|
*
|
|
* It is also called with FC_ID 0 when we're logged off.
|
|
*
|
|
* If the FC_ID is due to point-to-point, fp may be NULL.
|
|
*/
|
|
void fnic_set_port_id(struct fc_lport *lport, u32 port_id, struct fc_frame *fp)
|
|
{
|
|
struct fnic *fnic = lport_priv(lport);
|
|
u8 *mac;
|
|
int ret;
|
|
|
|
FNIC_FCS_DBG(KERN_DEBUG, lport->host, "set port_id %x fp %p\n",
|
|
port_id, fp);
|
|
|
|
/*
|
|
* If we're clearing the FC_ID, change to use the ctl_src_addr.
|
|
* Set ethernet mode to send FLOGI.
|
|
*/
|
|
if (!port_id) {
|
|
fnic_update_mac(lport, fnic->ctlr.ctl_src_addr);
|
|
fnic_set_eth_mode(fnic);
|
|
return;
|
|
}
|
|
|
|
if (fp) {
|
|
mac = fr_cb(fp)->granted_mac;
|
|
if (is_zero_ether_addr(mac)) {
|
|
/* non-FIP - FLOGI already accepted - ignore return */
|
|
fcoe_ctlr_recv_flogi(&fnic->ctlr, lport, fp);
|
|
}
|
|
fnic_update_mac(lport, mac);
|
|
}
|
|
|
|
/* Change state to reflect transition to FC mode */
|
|
spin_lock_irq(&fnic->fnic_lock);
|
|
if (fnic->state == FNIC_IN_ETH_MODE || fnic->state == FNIC_IN_FC_MODE)
|
|
fnic->state = FNIC_IN_ETH_TRANS_FC_MODE;
|
|
else {
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"Unexpected fnic state %s while"
|
|
" processing flogi resp\n",
|
|
fnic_state_to_str(fnic->state));
|
|
spin_unlock_irq(&fnic->fnic_lock);
|
|
return;
|
|
}
|
|
spin_unlock_irq(&fnic->fnic_lock);
|
|
|
|
/*
|
|
* Send FLOGI registration to firmware to set up FC mode.
|
|
* The new address will be set up when registration completes.
|
|
*/
|
|
ret = fnic_flogi_reg_handler(fnic, port_id);
|
|
|
|
if (ret < 0) {
|
|
spin_lock_irq(&fnic->fnic_lock);
|
|
if (fnic->state == FNIC_IN_ETH_TRANS_FC_MODE)
|
|
fnic->state = FNIC_IN_ETH_MODE;
|
|
spin_unlock_irq(&fnic->fnic_lock);
|
|
}
|
|
}
|
|
|
|
static void fnic_rq_cmpl_frame_recv(struct vnic_rq *rq, struct cq_desc
|
|
*cq_desc, struct vnic_rq_buf *buf,
|
|
int skipped __attribute__((unused)),
|
|
void *opaque)
|
|
{
|
|
struct fnic *fnic = vnic_dev_priv(rq->vdev);
|
|
struct sk_buff *skb;
|
|
struct fc_frame *fp;
|
|
struct fnic_stats *fnic_stats = &fnic->fnic_stats;
|
|
unsigned int eth_hdrs_stripped;
|
|
u8 type, color, eop, sop, ingress_port, vlan_stripped;
|
|
u8 fcoe = 0, fcoe_sof, fcoe_eof;
|
|
u8 fcoe_fc_crc_ok = 1, fcoe_enc_error = 0;
|
|
u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok;
|
|
u8 ipv6, ipv4, ipv4_fragment, rss_type, csum_not_calc;
|
|
u8 fcs_ok = 1, packet_error = 0;
|
|
u16 q_number, completed_index, bytes_written = 0, vlan, checksum;
|
|
u32 rss_hash;
|
|
u16 exchange_id, tmpl;
|
|
u8 sof = 0;
|
|
u8 eof = 0;
|
|
u32 fcp_bytes_written = 0;
|
|
unsigned long flags;
|
|
|
|
dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len,
|
|
DMA_FROM_DEVICE);
|
|
skb = buf->os_buf;
|
|
fp = (struct fc_frame *)skb;
|
|
buf->os_buf = NULL;
|
|
|
|
cq_desc_dec(cq_desc, &type, &color, &q_number, &completed_index);
|
|
if (type == CQ_DESC_TYPE_RQ_FCP) {
|
|
cq_fcp_rq_desc_dec((struct cq_fcp_rq_desc *)cq_desc,
|
|
&type, &color, &q_number, &completed_index,
|
|
&eop, &sop, &fcoe_fc_crc_ok, &exchange_id,
|
|
&tmpl, &fcp_bytes_written, &sof, &eof,
|
|
&ingress_port, &packet_error,
|
|
&fcoe_enc_error, &fcs_ok, &vlan_stripped,
|
|
&vlan);
|
|
eth_hdrs_stripped = 1;
|
|
skb_trim(skb, fcp_bytes_written);
|
|
fr_sof(fp) = sof;
|
|
fr_eof(fp) = eof;
|
|
|
|
} else if (type == CQ_DESC_TYPE_RQ_ENET) {
|
|
cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc,
|
|
&type, &color, &q_number, &completed_index,
|
|
&ingress_port, &fcoe, &eop, &sop,
|
|
&rss_type, &csum_not_calc, &rss_hash,
|
|
&bytes_written, &packet_error,
|
|
&vlan_stripped, &vlan, &checksum,
|
|
&fcoe_sof, &fcoe_fc_crc_ok,
|
|
&fcoe_enc_error, &fcoe_eof,
|
|
&tcp_udp_csum_ok, &udp, &tcp,
|
|
&ipv4_csum_ok, &ipv6, &ipv4,
|
|
&ipv4_fragment, &fcs_ok);
|
|
eth_hdrs_stripped = 0;
|
|
skb_trim(skb, bytes_written);
|
|
if (!fcs_ok) {
|
|
atomic64_inc(&fnic_stats->misc_stats.frame_errors);
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"fcs error. dropping packet.\n");
|
|
goto drop;
|
|
}
|
|
if (fnic_import_rq_eth_pkt(fnic, skb))
|
|
return;
|
|
|
|
} else {
|
|
/* wrong CQ type*/
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
"fnic rq_cmpl wrong cq type x%x\n", type);
|
|
goto drop;
|
|
}
|
|
|
|
if (!fcs_ok || packet_error || !fcoe_fc_crc_ok || fcoe_enc_error) {
|
|
atomic64_inc(&fnic_stats->misc_stats.frame_errors);
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"fnic rq_cmpl fcoe x%x fcsok x%x"
|
|
" pkterr x%x fcoe_fc_crc_ok x%x, fcoe_enc_err"
|
|
" x%x\n",
|
|
fcoe, fcs_ok, packet_error,
|
|
fcoe_fc_crc_ok, fcoe_enc_error);
|
|
goto drop;
|
|
}
|
|
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
if (fnic->stop_rx_link_events) {
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
goto drop;
|
|
}
|
|
fr_dev(fp) = fnic->lport;
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_RECV,
|
|
(char *)skb->data, skb->len)) != 0) {
|
|
printk(KERN_ERR "fnic ctlr frame trace error!!!");
|
|
}
|
|
|
|
skb_queue_tail(&fnic->frame_queue, skb);
|
|
queue_work(fnic_event_queue, &fnic->frame_work);
|
|
|
|
return;
|
|
drop:
|
|
dev_kfree_skb_irq(skb);
|
|
}
|
|
|
|
static int fnic_rq_cmpl_handler_cont(struct vnic_dev *vdev,
|
|
struct cq_desc *cq_desc, u8 type,
|
|
u16 q_number, u16 completed_index,
|
|
void *opaque)
|
|
{
|
|
struct fnic *fnic = vnic_dev_priv(vdev);
|
|
|
|
vnic_rq_service(&fnic->rq[q_number], cq_desc, completed_index,
|
|
VNIC_RQ_RETURN_DESC, fnic_rq_cmpl_frame_recv,
|
|
NULL);
|
|
return 0;
|
|
}
|
|
|
|
int fnic_rq_cmpl_handler(struct fnic *fnic, int rq_work_to_do)
|
|
{
|
|
unsigned int tot_rq_work_done = 0, cur_work_done;
|
|
unsigned int i;
|
|
int err;
|
|
|
|
for (i = 0; i < fnic->rq_count; i++) {
|
|
cur_work_done = vnic_cq_service(&fnic->cq[i], rq_work_to_do,
|
|
fnic_rq_cmpl_handler_cont,
|
|
NULL);
|
|
if (cur_work_done) {
|
|
err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
|
|
if (err)
|
|
shost_printk(KERN_ERR, fnic->lport->host,
|
|
"fnic_alloc_rq_frame can't alloc"
|
|
" frame\n");
|
|
}
|
|
tot_rq_work_done += cur_work_done;
|
|
}
|
|
|
|
return tot_rq_work_done;
|
|
}
|
|
|
|
/*
|
|
* This function is called once at init time to allocate and fill RQ
|
|
* buffers. Subsequently, it is called in the interrupt context after RQ
|
|
* buffer processing to replenish the buffers in the RQ
|
|
*/
|
|
int fnic_alloc_rq_frame(struct vnic_rq *rq)
|
|
{
|
|
struct fnic *fnic = vnic_dev_priv(rq->vdev);
|
|
struct sk_buff *skb;
|
|
u16 len;
|
|
dma_addr_t pa;
|
|
int r;
|
|
|
|
len = FC_FRAME_HEADROOM + FC_MAX_FRAME + FC_FRAME_TAILROOM;
|
|
skb = dev_alloc_skb(len);
|
|
if (!skb) {
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"Unable to allocate RQ sk_buff\n");
|
|
return -ENOMEM;
|
|
}
|
|
skb_reset_mac_header(skb);
|
|
skb_reset_transport_header(skb);
|
|
skb_reset_network_header(skb);
|
|
skb_put(skb, len);
|
|
pa = dma_map_single(&fnic->pdev->dev, skb->data, len, DMA_FROM_DEVICE);
|
|
if (dma_mapping_error(&fnic->pdev->dev, pa)) {
|
|
r = -ENOMEM;
|
|
printk(KERN_ERR "PCI mapping failed with error %d\n", r);
|
|
goto free_skb;
|
|
}
|
|
|
|
fnic_queue_rq_desc(rq, skb, pa, len);
|
|
return 0;
|
|
|
|
free_skb:
|
|
kfree_skb(skb);
|
|
return r;
|
|
}
|
|
|
|
void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf)
|
|
{
|
|
struct fc_frame *fp = buf->os_buf;
|
|
struct fnic *fnic = vnic_dev_priv(rq->vdev);
|
|
|
|
dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len,
|
|
DMA_FROM_DEVICE);
|
|
|
|
dev_kfree_skb(fp_skb(fp));
|
|
buf->os_buf = NULL;
|
|
}
|
|
|
|
/**
|
|
* fnic_eth_send() - Send Ethernet frame.
|
|
* @fip: fcoe_ctlr instance.
|
|
* @skb: Ethernet Frame, FIP, without VLAN encapsulation.
|
|
*/
|
|
void fnic_eth_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
|
|
{
|
|
struct fnic *fnic = fnic_from_ctlr(fip);
|
|
struct vnic_wq *wq = &fnic->wq[0];
|
|
dma_addr_t pa;
|
|
struct ethhdr *eth_hdr;
|
|
struct vlan_ethhdr *vlan_hdr;
|
|
unsigned long flags;
|
|
|
|
if (!fnic->vlan_hw_insert) {
|
|
eth_hdr = (struct ethhdr *)skb_mac_header(skb);
|
|
vlan_hdr = skb_push(skb, sizeof(*vlan_hdr) - sizeof(*eth_hdr));
|
|
memcpy(vlan_hdr, eth_hdr, 2 * ETH_ALEN);
|
|
vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q);
|
|
vlan_hdr->h_vlan_encapsulated_proto = eth_hdr->h_proto;
|
|
vlan_hdr->h_vlan_TCI = htons(fnic->vlan_id);
|
|
if ((fnic_fc_trace_set_data(fnic->lport->host->host_no,
|
|
FNIC_FC_SEND|0x80, (char *)eth_hdr, skb->len)) != 0) {
|
|
printk(KERN_ERR "fnic ctlr frame trace error!!!");
|
|
}
|
|
} else {
|
|
if ((fnic_fc_trace_set_data(fnic->lport->host->host_no,
|
|
FNIC_FC_SEND|0x80, (char *)skb->data, skb->len)) != 0) {
|
|
printk(KERN_ERR "fnic ctlr frame trace error!!!");
|
|
}
|
|
}
|
|
|
|
pa = dma_map_single(&fnic->pdev->dev, skb->data, skb->len,
|
|
DMA_TO_DEVICE);
|
|
if (dma_mapping_error(&fnic->pdev->dev, pa)) {
|
|
printk(KERN_ERR "DMA mapping failed\n");
|
|
goto free_skb;
|
|
}
|
|
|
|
spin_lock_irqsave(&fnic->wq_lock[0], flags);
|
|
if (!vnic_wq_desc_avail(wq))
|
|
goto irq_restore;
|
|
|
|
fnic_queue_wq_eth_desc(wq, skb, pa, skb->len,
|
|
0 /* hw inserts cos value */,
|
|
fnic->vlan_id, 1);
|
|
spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
|
|
return;
|
|
|
|
irq_restore:
|
|
spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
|
|
dma_unmap_single(&fnic->pdev->dev, pa, skb->len, DMA_TO_DEVICE);
|
|
free_skb:
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
/*
|
|
* Send FC frame.
|
|
*/
|
|
static int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp)
|
|
{
|
|
struct vnic_wq *wq = &fnic->wq[0];
|
|
struct sk_buff *skb;
|
|
dma_addr_t pa;
|
|
struct ethhdr *eth_hdr;
|
|
struct vlan_ethhdr *vlan_hdr;
|
|
struct fcoe_hdr *fcoe_hdr;
|
|
struct fc_frame_header *fh;
|
|
u32 tot_len, eth_hdr_len;
|
|
int ret = 0;
|
|
unsigned long flags;
|
|
|
|
fh = fc_frame_header_get(fp);
|
|
skb = fp_skb(fp);
|
|
|
|
if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ) &&
|
|
fcoe_ctlr_els_send(&fnic->ctlr, fnic->lport, skb))
|
|
return 0;
|
|
|
|
if (!fnic->vlan_hw_insert) {
|
|
eth_hdr_len = sizeof(*vlan_hdr) + sizeof(*fcoe_hdr);
|
|
vlan_hdr = skb_push(skb, eth_hdr_len);
|
|
eth_hdr = (struct ethhdr *)vlan_hdr;
|
|
vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q);
|
|
vlan_hdr->h_vlan_encapsulated_proto = htons(ETH_P_FCOE);
|
|
vlan_hdr->h_vlan_TCI = htons(fnic->vlan_id);
|
|
fcoe_hdr = (struct fcoe_hdr *)(vlan_hdr + 1);
|
|
} else {
|
|
eth_hdr_len = sizeof(*eth_hdr) + sizeof(*fcoe_hdr);
|
|
eth_hdr = skb_push(skb, eth_hdr_len);
|
|
eth_hdr->h_proto = htons(ETH_P_FCOE);
|
|
fcoe_hdr = (struct fcoe_hdr *)(eth_hdr + 1);
|
|
}
|
|
|
|
if (fnic->ctlr.map_dest)
|
|
fc_fcoe_set_mac(eth_hdr->h_dest, fh->fh_d_id);
|
|
else
|
|
memcpy(eth_hdr->h_dest, fnic->ctlr.dest_addr, ETH_ALEN);
|
|
memcpy(eth_hdr->h_source, fnic->data_src_addr, ETH_ALEN);
|
|
|
|
tot_len = skb->len;
|
|
BUG_ON(tot_len % 4);
|
|
|
|
memset(fcoe_hdr, 0, sizeof(*fcoe_hdr));
|
|
fcoe_hdr->fcoe_sof = fr_sof(fp);
|
|
if (FC_FCOE_VER)
|
|
FC_FCOE_ENCAPS_VER(fcoe_hdr, FC_FCOE_VER);
|
|
|
|
pa = dma_map_single(&fnic->pdev->dev, eth_hdr, tot_len, DMA_TO_DEVICE);
|
|
if (dma_mapping_error(&fnic->pdev->dev, pa)) {
|
|
ret = -ENOMEM;
|
|
printk(KERN_ERR "DMA map failed with error %d\n", ret);
|
|
goto free_skb_on_err;
|
|
}
|
|
|
|
if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_SEND,
|
|
(char *)eth_hdr, tot_len)) != 0) {
|
|
printk(KERN_ERR "fnic ctlr frame trace error!!!");
|
|
}
|
|
|
|
spin_lock_irqsave(&fnic->wq_lock[0], flags);
|
|
|
|
if (!vnic_wq_desc_avail(wq)) {
|
|
dma_unmap_single(&fnic->pdev->dev, pa, tot_len, DMA_TO_DEVICE);
|
|
ret = -1;
|
|
goto irq_restore;
|
|
}
|
|
|
|
fnic_queue_wq_desc(wq, skb, pa, tot_len, fr_eof(fp),
|
|
0 /* hw inserts cos value */,
|
|
fnic->vlan_id, 1, 1, 1);
|
|
|
|
irq_restore:
|
|
spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
|
|
|
|
free_skb_on_err:
|
|
if (ret)
|
|
dev_kfree_skb_any(fp_skb(fp));
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* fnic_send
|
|
* Routine to send a raw frame
|
|
*/
|
|
int fnic_send(struct fc_lport *lp, struct fc_frame *fp)
|
|
{
|
|
struct fnic *fnic = lport_priv(lp);
|
|
unsigned long flags;
|
|
|
|
if (fnic->in_remove) {
|
|
dev_kfree_skb(fp_skb(fp));
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Queue frame if in a transitional state.
|
|
* This occurs while registering the Port_ID / MAC address after FLOGI.
|
|
*/
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
if (fnic->state != FNIC_IN_FC_MODE && fnic->state != FNIC_IN_ETH_MODE) {
|
|
skb_queue_tail(&fnic->tx_queue, fp_skb(fp));
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
return 0;
|
|
}
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
|
|
return fnic_send_frame(fnic, fp);
|
|
}
|
|
|
|
/**
|
|
* fnic_flush_tx() - send queued frames.
|
|
* @fnic: fnic device
|
|
*
|
|
* Send frames that were waiting to go out in FC or Ethernet mode.
|
|
* Whenever changing modes we purge queued frames, so these frames should
|
|
* be queued for the stable mode that we're in, either FC or Ethernet.
|
|
*
|
|
* Called without fnic_lock held.
|
|
*/
|
|
void fnic_flush_tx(struct fnic *fnic)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct fc_frame *fp;
|
|
|
|
while ((skb = skb_dequeue(&fnic->tx_queue))) {
|
|
fp = (struct fc_frame *)skb;
|
|
fnic_send_frame(fnic, fp);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* fnic_set_eth_mode() - put fnic into ethernet mode.
|
|
* @fnic: fnic device
|
|
*
|
|
* Called without fnic lock held.
|
|
*/
|
|
static void fnic_set_eth_mode(struct fnic *fnic)
|
|
{
|
|
unsigned long flags;
|
|
enum fnic_state old_state;
|
|
int ret;
|
|
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
again:
|
|
old_state = fnic->state;
|
|
switch (old_state) {
|
|
case FNIC_IN_FC_MODE:
|
|
case FNIC_IN_ETH_TRANS_FC_MODE:
|
|
default:
|
|
fnic->state = FNIC_IN_FC_TRANS_ETH_MODE;
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
|
|
ret = fnic_fw_reset_handler(fnic);
|
|
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
if (fnic->state != FNIC_IN_FC_TRANS_ETH_MODE)
|
|
goto again;
|
|
if (ret)
|
|
fnic->state = old_state;
|
|
break;
|
|
|
|
case FNIC_IN_FC_TRANS_ETH_MODE:
|
|
case FNIC_IN_ETH_MODE:
|
|
break;
|
|
}
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
}
|
|
|
|
static void fnic_wq_complete_frame_send(struct vnic_wq *wq,
|
|
struct cq_desc *cq_desc,
|
|
struct vnic_wq_buf *buf, void *opaque)
|
|
{
|
|
struct sk_buff *skb = buf->os_buf;
|
|
struct fc_frame *fp = (struct fc_frame *)skb;
|
|
struct fnic *fnic = vnic_dev_priv(wq->vdev);
|
|
|
|
dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len,
|
|
DMA_TO_DEVICE);
|
|
dev_kfree_skb_irq(fp_skb(fp));
|
|
buf->os_buf = NULL;
|
|
}
|
|
|
|
static int fnic_wq_cmpl_handler_cont(struct vnic_dev *vdev,
|
|
struct cq_desc *cq_desc, u8 type,
|
|
u16 q_number, u16 completed_index,
|
|
void *opaque)
|
|
{
|
|
struct fnic *fnic = vnic_dev_priv(vdev);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&fnic->wq_lock[q_number], flags);
|
|
vnic_wq_service(&fnic->wq[q_number], cq_desc, completed_index,
|
|
fnic_wq_complete_frame_send, NULL);
|
|
spin_unlock_irqrestore(&fnic->wq_lock[q_number], flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int fnic_wq_cmpl_handler(struct fnic *fnic, int work_to_do)
|
|
{
|
|
unsigned int wq_work_done = 0;
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < fnic->raw_wq_count; i++) {
|
|
wq_work_done += vnic_cq_service(&fnic->cq[fnic->rq_count+i],
|
|
work_to_do,
|
|
fnic_wq_cmpl_handler_cont,
|
|
NULL);
|
|
}
|
|
|
|
return wq_work_done;
|
|
}
|
|
|
|
|
|
void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf)
|
|
{
|
|
struct fc_frame *fp = buf->os_buf;
|
|
struct fnic *fnic = vnic_dev_priv(wq->vdev);
|
|
|
|
dma_unmap_single(&fnic->pdev->dev, buf->dma_addr, buf->len,
|
|
DMA_TO_DEVICE);
|
|
|
|
dev_kfree_skb(fp_skb(fp));
|
|
buf->os_buf = NULL;
|
|
}
|
|
|
|
void fnic_fcoe_reset_vlans(struct fnic *fnic)
|
|
{
|
|
unsigned long flags;
|
|
struct fcoe_vlan *vlan;
|
|
struct fcoe_vlan *next;
|
|
|
|
/*
|
|
* indicate a link down to fcoe so that all fcf's are free'd
|
|
* might not be required since we did this before sending vlan
|
|
* discovery request
|
|
*/
|
|
spin_lock_irqsave(&fnic->vlans_lock, flags);
|
|
if (!list_empty(&fnic->vlans)) {
|
|
list_for_each_entry_safe(vlan, next, &fnic->vlans, list) {
|
|
list_del(&vlan->list);
|
|
kfree(vlan);
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
}
|
|
|
|
void fnic_handle_fip_timer(struct fnic *fnic)
|
|
{
|
|
unsigned long flags;
|
|
struct fcoe_vlan *vlan;
|
|
struct fnic_stats *fnic_stats = &fnic->fnic_stats;
|
|
u64 sol_time;
|
|
|
|
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
|
if (fnic->stop_rx_link_events) {
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
return;
|
|
}
|
|
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
|
|
|
if (fnic->ctlr.mode == FIP_MODE_NON_FIP)
|
|
return;
|
|
|
|
spin_lock_irqsave(&fnic->vlans_lock, flags);
|
|
if (list_empty(&fnic->vlans)) {
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
/* no vlans available, try again */
|
|
if (printk_ratelimit())
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"Start VLAN Discovery\n");
|
|
fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC);
|
|
return;
|
|
}
|
|
|
|
vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan, list);
|
|
shost_printk(KERN_DEBUG, fnic->lport->host,
|
|
"fip_timer: vlan %d state %d sol_count %d\n",
|
|
vlan->vid, vlan->state, vlan->sol_count);
|
|
switch (vlan->state) {
|
|
case FIP_VLAN_USED:
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"FIP VLAN is selected for FC transaction\n");
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
break;
|
|
case FIP_VLAN_FAILED:
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
/* if all vlans are in failed state, restart vlan disc */
|
|
if (printk_ratelimit())
|
|
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
|
"Start VLAN Discovery\n");
|
|
fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC);
|
|
break;
|
|
case FIP_VLAN_SENT:
|
|
if (vlan->sol_count >= FCOE_CTLR_MAX_SOL) {
|
|
/*
|
|
* no response on this vlan, remove from the list.
|
|
* Try the next vlan
|
|
*/
|
|
shost_printk(KERN_INFO, fnic->lport->host,
|
|
"Dequeue this VLAN ID %d from list\n",
|
|
vlan->vid);
|
|
list_del(&vlan->list);
|
|
kfree(vlan);
|
|
vlan = NULL;
|
|
if (list_empty(&fnic->vlans)) {
|
|
/* we exhausted all vlans, restart vlan disc */
|
|
spin_unlock_irqrestore(&fnic->vlans_lock,
|
|
flags);
|
|
shost_printk(KERN_INFO, fnic->lport->host,
|
|
"fip_timer: vlan list empty, "
|
|
"trigger vlan disc\n");
|
|
fnic_event_enq(fnic, FNIC_EVT_START_VLAN_DISC);
|
|
return;
|
|
}
|
|
/* check the next vlan */
|
|
vlan = list_first_entry(&fnic->vlans, struct fcoe_vlan,
|
|
list);
|
|
fnic->set_vlan(fnic, vlan->vid);
|
|
vlan->state = FIP_VLAN_SENT; /* sent now */
|
|
}
|
|
spin_unlock_irqrestore(&fnic->vlans_lock, flags);
|
|
atomic64_inc(&fnic_stats->vlan_stats.sol_expiry_count);
|
|
vlan->sol_count++;
|
|
sol_time = jiffies + msecs_to_jiffies
|
|
(FCOE_CTLR_START_DELAY);
|
|
mod_timer(&fnic->fip_timer, round_jiffies(sol_time));
|
|
break;
|
|
}
|
|
}
|