/*
* MPC mode version of transmit_skb
*/
static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
{
struct pdu *p_header;
struct net_device *dev = ch->netdev;
struct ctcm_priv *priv = dev->ml_priv;
struct mpc_group *grp = priv->mpcg;
struct th_header *header;
struct sk_buff *nskb;
int rc = 0;
int ccw_idx;
unsigned long hi;
unsigned long saveflags = 0; /* avoids compiler warning */
__u16 block_len;
CTCM_PR_DEBUG("Enter %s: %s, cp=%i ch=0x%p id=%s state=%s\n",
__func__, dev->name, smp_processor_id(), ch,
ch->id, fsm_getstate_str(ch->fsm));
if ((fsm_getstate(ch->fsm) != CTC_STATE_TXIDLE) || grp->in_sweep) {
spin_lock_irqsave(&ch->collect_lock, saveflags);
atomic_inc(&skb->users);
p_header = kmalloc(PDU_HEADER_LENGTH, gfp_type());
if (!p_header) {
spin_unlock_irqrestore(&ch->collect_lock, saveflags);
goto nomem_exit;
}
p_header->pdu_offset = skb->len;
p_header->pdu_proto = 0x01;
p_header->pdu_flag = 0x00;
if (skb->protocol == ntohs(ETH_P_SNAP)) {
p_header->pdu_flag |= PDU_FIRST | PDU_CNTL;
} else {
p_header->pdu_flag |= PDU_FIRST;
}
p_header->pdu_seq = 0;
memcpy(skb_push(skb, PDU_HEADER_LENGTH), p_header,
PDU_HEADER_LENGTH);
CTCM_PR_DEBUG("%s(%s): Put on collect_q - skb len: %04x \n"
"pdu header and data for up to 32 bytes:\n",
__func__, dev->name, skb->len);
CTCM_D3_DUMP((char *)skb->data, min_t(int, 32, skb->len));
skb_queue_tail(&ch->collect_queue, skb);
ch->collect_len += skb->len;
kfree(p_header);
spin_unlock_irqrestore(&ch->collect_lock, saveflags);
goto done;
}
static void ctcm_print_statistics(struct ctcm_priv *priv)
{
char *sbuf;
char *p;
if (!priv)
return;
sbuf = kmalloc(2048, GFP_KERNEL);
if (sbuf == NULL)
return;
p = sbuf;
p += sprintf(p, " Device FSM state: %s\n",
fsm_getstate_str(priv->fsm));
p += sprintf(p, " RX channel FSM state: %s\n",
fsm_getstate_str(priv->channel[CTCM_READ]->fsm));
p += sprintf(p, " TX channel FSM state: %s\n",
fsm_getstate_str(priv->channel[CTCM_WRITE]->fsm));
p += sprintf(p, " Max. TX buffer used: %ld\n",
priv->channel[WRITE]->prof.maxmulti);
p += sprintf(p, " Max. chained SKBs: %ld\n",
priv->channel[WRITE]->prof.maxcqueue);
p += sprintf(p, " TX single write ops: %ld\n",
priv->channel[WRITE]->prof.doios_single);
p += sprintf(p, " TX multi write ops: %ld\n",
priv->channel[WRITE]->prof.doios_multi);
p += sprintf(p, " Netto bytes written: %ld\n",
priv->channel[WRITE]->prof.txlen);
p += sprintf(p, " Max. TX IO-time: %u\n",
jiffies_to_usecs(priv->channel[WRITE]->prof.tx_time));
printk(KERN_INFO "Statistics for %s:\n%s",
priv->channel[CTCM_WRITE]->netdev->name, sbuf);
kfree(sbuf);
return;
}