solos: Handle new line status change packets, hook up to ATM layer info

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index b0c4676..4c87dfb 100644 (file)
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -82,6 +82,7 @@ struct pkt_hdr {
 #define PKT_COMMAND    1
 #define PKT_POPEN      3
 #define PKT_PCLOSE     4
+#define PKT_STATUS     5
 
 struct solos_card {
        void __iomem *config_regs;
@@ -275,6 +276,72 @@ static ssize_t solos_param_store(struct device *dev, struct device_attribute *at
        return ret;
 }
 
+static char *next_string(struct sk_buff *skb)
+{
+       int i = 0;
+       char *this = skb->data;
+
+       while (i < skb->len) {
+               if (this[i] == '\n') {
+                       this[i] = 0;
+                       skb_pull(skb, i);
+                       return this;
+               }
+       }
+       return NULL;
+}
+
+/*
+ * Status packet has fields separated by \n, starting with a version number
+ * for the information therein. Fields are....
+ *
+ *     packet version
+ *     TxBitRate       (version >= 1)
+ *     RxBitRate       (version >= 1)
+ *     State           (version >= 1)
+ */       
+static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
+{
+       char *str, *end;
+       int ver, rate_up, rate_down, state;
+
+       if (!card->atmdev[port])
+               return -ENODEV;
+
+       str = next_string(skb);
+       if (!str)
+               return -EIO;
+
+       ver = simple_strtol(str, NULL, 10);
+       if (ver < 1) {
+               dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
+                        ver);
+               return -EIO;
+       }
+
+       str = next_string(skb);
+       rate_up = simple_strtol(str, &end, 10);
+       if (*end)
+               return -EIO;
+
+       str = next_string(skb);
+       rate_down = simple_strtol(str, &end, 10);
+       if (*end)
+               return -EIO;
+
+       str = next_string(skb);
+       if (!strcmp(str, "Showtime"))
+               state = ATM_PHY_SIG_FOUND;
+       else state = ATM_PHY_SIG_LOST;
+
+       card->atmdev[port]->link_rate = rate_down;
+       card->atmdev[port]->signal = state;
+
+       dev_info(&card->dev->dev, "ATM state: '%s', %d/%d kb/s up/down.\n",
+                str, rate_up/1000, rate_down/1000);
+       return 0;
+}
+
 static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
 {
        struct solos_param *prm;
@@ -512,7 +579,7 @@ void solos_bh(unsigned long card_arg)
 
                        size = le16_to_cpu(header.size);
 
-                       skb = alloc_skb(size, GFP_ATOMIC);
+                       skb = alloc_skb(size + 1, GFP_ATOMIC);
                        if (!skb) {
                                if (net_ratelimit())
                                        dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
@@ -547,6 +614,11 @@ void solos_bh(unsigned long card_arg)
                                atomic_inc(&vcc->stats->rx);
                                break;
 
+                       case PKT_STATUS:
+                               process_status(card, port, skb);
+                               dev_kfree_skb(skb);
+                               break;
+
                        case PKT_COMMAND:
                        default: /* FIXME: Not really, surely? */
                                if (process_command(card, port, skb))
@@ -996,6 +1068,9 @@ static int atm_init(struct solos_card *card)
        int i;
 
        for (i = 0; i < card->nr_ports; i++) {
+               struct sk_buff *skb;
+               struct pkt_hdr *header;
+
                skb_queue_head_init(&card->tx_queue[i]);
                skb_queue_head_init(&card->cli_queue[i]);
 
@@ -1016,6 +1091,22 @@ static int atm_init(struct solos_card *card)
                card->atmdev[i]->ci_range.vci_bits = 16;
                card->atmdev[i]->dev_data = card;
                card->atmdev[i]->phy_data = (void *)(unsigned long)i;
+               card->atmdev[i]->signal = ATM_PHY_SIG_UNKNOWN;
+
+               skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
+               if (!skb) {
+                       dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
+                       continue;
+               }
+
+               header = (void *)skb_put(skb, sizeof(*header));
+
+               header->size = cpu_to_le16(0);
+               header->vpi = cpu_to_le16(0);
+               header->vci = cpu_to_le16(0);
+               header->type = cpu_to_le16(PKT_STATUS);
+
+               fpga_queue(card, i, skb, NULL);
        }
        return 0;
 }