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path: root/drivers/atm/solos-pci.c
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Diffstat (limited to 'drivers/atm/solos-pci.c')
-rw-r--r--drivers/atm/solos-pci.c88
1 files changed, 35 insertions, 53 deletions
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index 98510931c815..c909b7b7d5f1 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -164,7 +164,6 @@ static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
static uint32_t fpga_tx(struct solos_card *);
static irqreturn_t solos_irq(int irq, void *dev_id);
static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
-static int list_vccs(int vci);
static int atm_init(struct solos_card *, struct device *);
static void atm_remove(struct solos_card *);
static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
@@ -710,7 +709,8 @@ void solos_bh(unsigned long card_arg)
dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n",
le16_to_cpu(header->vpi), le16_to_cpu(header->vci),
port);
- continue;
+ dev_kfree_skb_any(skb);
+ break;
}
atm_charge(vcc, skb->truesize);
vcc->push(vcc, skb);
@@ -790,44 +790,6 @@ static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
return vcc;
}
-static int list_vccs(int vci)
-{
- struct hlist_head *head;
- struct atm_vcc *vcc;
- struct hlist_node *node;
- struct sock *s;
- int num_found = 0;
- int i;
-
- read_lock(&vcc_sklist_lock);
- if (vci != 0){
- head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
- sk_for_each(s, node, head) {
- num_found ++;
- vcc = atm_sk(s);
- printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
- vcc->dev->number,
- vcc->vpi,
- vcc->vci);
- }
- } else {
- for(i = 0; i < VCC_HTABLE_SIZE; i++){
- head = &vcc_hash[i];
- sk_for_each(s, node, head) {
- num_found ++;
- vcc = atm_sk(s);
- printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
- vcc->dev->number,
- vcc->vpi,
- vcc->vci);
- }
- }
- }
- read_unlock(&vcc_sklist_lock);
- return num_found;
-}
-
-
static int popen(struct atm_vcc *vcc)
{
struct solos_card *card = vcc->dev->dev_data;
@@ -840,7 +802,7 @@ static int popen(struct atm_vcc *vcc)
return -EINVAL;
}
- skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
+ skb = alloc_skb(sizeof(*header), GFP_KERNEL);
if (!skb) {
if (net_ratelimit())
dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
@@ -857,8 +819,6 @@ static int popen(struct atm_vcc *vcc)
set_bit(ATM_VF_ADDR, &vcc->flags);
set_bit(ATM_VF_READY, &vcc->flags);
- list_vccs(0);
-
return 0;
}
@@ -866,10 +826,21 @@ static int popen(struct atm_vcc *vcc)
static void pclose(struct atm_vcc *vcc)
{
struct solos_card *card = vcc->dev->dev_data;
- struct sk_buff *skb;
+ unsigned char port = SOLOS_CHAN(vcc->dev);
+ struct sk_buff *skb, *tmpskb;
struct pkt_hdr *header;
- skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
+ /* Remove any yet-to-be-transmitted packets from the pending queue */
+ spin_lock(&card->tx_queue_lock);
+ skb_queue_walk_safe(&card->tx_queue[port], skb, tmpskb) {
+ if (SKB_CB(skb)->vcc == vcc) {
+ skb_unlink(skb, &card->tx_queue[port]);
+ solos_pop(vcc, skb);
+ }
+ }
+ spin_unlock(&card->tx_queue_lock);
+
+ skb = alloc_skb(sizeof(*header), GFP_KERNEL);
if (!skb) {
dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
return;
@@ -881,15 +852,22 @@ static void pclose(struct atm_vcc *vcc)
header->vci = cpu_to_le16(vcc->vci);
header->type = cpu_to_le16(PKT_PCLOSE);
- fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
+ skb_get(skb);
+ fpga_queue(card, port, skb, NULL);
- clear_bit(ATM_VF_ADDR, &vcc->flags);
- clear_bit(ATM_VF_READY, &vcc->flags);
+ if (!wait_event_timeout(card->param_wq, !skb_shared(skb), 5 * HZ))
+ dev_warn(&card->dev->dev,
+ "Timeout waiting for VCC close on port %d\n", port);
+
+ dev_kfree_skb(skb);
/* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the
tasklet has finished processing any incoming packets (and, more to
the point, using the vcc pointer). */
tasklet_unlock_wait(&card->tlet);
+
+ clear_bit(ATM_VF_ADDR, &vcc->flags);
+
return;
}
@@ -967,10 +945,11 @@ static uint32_t fpga_tx(struct solos_card *card)
for (port = 0; tx_pending; tx_pending >>= 1, port++) {
if (tx_pending & 1) {
struct sk_buff *oldskb = card->tx_skb[port];
- if (oldskb)
+ if (oldskb) {
pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr,
oldskb->len, PCI_DMA_TODEVICE);
-
+ card->tx_skb[port] = NULL;
+ }
spin_lock(&card->tx_queue_lock);
skb = skb_dequeue(&card->tx_queue[port]);
if (!skb)
@@ -1011,9 +990,10 @@ static uint32_t fpga_tx(struct solos_card *card)
if (vcc) {
atomic_inc(&vcc->stats->tx);
solos_pop(vcc, oldskb);
- } else
+ } else {
dev_kfree_skb_irq(oldskb);
-
+ wake_up(&card->param_wq);
+ }
}
}
/* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
@@ -1248,7 +1228,7 @@ static int atm_init(struct solos_card *card, struct device *parent)
card->atmdev[i]->phy_data = (void *)(unsigned long)i;
atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND);
- skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
+ skb = alloc_skb(sizeof(*header), GFP_KERNEL);
if (!skb) {
dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
continue;
@@ -1345,6 +1325,8 @@ static struct pci_driver fpga_driver = {
static int __init solos_pci_init(void)
{
+ BUILD_BUG_ON(sizeof(struct solos_skb_cb) > sizeof(((struct sk_buff *)0)->cb));
+
printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
return pci_register_driver(&fpga_driver);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 11:21:03 +0100