/*
* 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 "cq_enet_desc.h"
#include "cq_exch_desc.h"
struct workqueue_struct *fnic_event_queue;
static void fnic_set_eth_mode(struct fnic *);
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);
if (old_link_status == fnic->link_status) {
if (!fnic->link_status)
/* DOWN -> DOWN */
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
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_FCS_DBG(KERN_DEBUG, fnic->lport->host,
"link down\n");
fcoe_ctlr_link_down(&fnic->ctlr);
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);
}
} else if (fnic->link_status) {
/* DOWN -> UP */
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link up\n");
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");
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);
}
}
/**
* 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 = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
skb_reset_mac_header(skb);
}
if (eh->h_proto == htons(ETH_P_FIP)) {
skb_pull(skb, sizeof(*eh));
fcoe_ctlr_recv(&fnic->ctlr, skb);
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 (!compare_ether_addr(data, new))
return;
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "update_mac %pM\n", new);
if (!is_zero_ether_addr(data) && compare_ether_addr(data, ctl))
vnic_dev_del_addr(fnic->vdev, data);
memcpy(data, new, ETH_ALEN);
if (compare_ether_addr(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;
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;
pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len,
PCI_DMA_FROMDEVICE);
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) {
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) {
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);
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;
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 = pci_map_single(fnic->pdev, skb->data, len, PCI_DMA_FROMDEVICE);
fnic_queue_rq_desc(rq, skb, pa, len);
return 0;
}
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);
pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len,
PCI_DMA_FROMDEVICE);
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 = (struct vlan_ethhdr *)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);
}
pa = pci_map_single(fnic->pdev, skb->data, skb->len, PCI_DMA_TODEVICE);
spin_lock_irqsave(&fnic->wq_lock[0], flags);
if (!vnic_wq_desc_avail(wq)) {
pci_unmap_single(fnic->pdev, pa, skb->len, PCI_DMA_TODEVICE);
spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
kfree_skb(skb);
return;
}
fnic_queue_wq_eth_desc(wq, skb, pa, skb->len,
fnic->vlan_hw_insert, fnic->vlan_id, 1);
spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
}
/*
* 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 = (struct vlan_ethhdr *)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 = (struct ethhdr *)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 = pci_map_single(fnic->pdev, eth_hdr, tot_len, PCI_DMA_TODEVICE);
spin_lock_irqsave(&fnic->wq_lock[0], flags);
if (!vnic_wq_desc_avail(wq)) {
pci_unmap_single(fnic->pdev, pa,
tot_len, PCI_DMA_TODEVICE);
ret = -1;
goto fnic_send_frame_end;
}
fnic_queue_wq_desc(wq, skb, pa, tot_len, fr_eof(fp),
fnic->vlan_hw_insert, fnic->vlan_id, 1, 1, 1);
fnic_send_frame_end:
spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
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);
pci_unmap_single(fnic->pdev, buf->dma_addr,
buf->len, PCI_DMA_TODEVICE);
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);
pci_unmap_single(fnic->pdev, buf->dma_addr,
buf->len, PCI_DMA_TODEVICE);
dev_kfree_skb(fp_skb(fp));
buf->os_buf = NULL;
}