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path: root/drivers/s390/net/ctcm_main.c
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Diffstat (limited to 'drivers/s390/net/ctcm_main.c')
-rw-r--r--drivers/s390/net/ctcm_main.c33
1 files changed, 8 insertions, 25 deletions
diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c
index 9e28c63415ed..92dd3c803d23 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -665,24 +665,16 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
if ((fsm_getstate(ch->fsm) != CTC_STATE_TXIDLE) || grp->in_sweep) {
spin_lock_irqsave(&ch->collect_lock, saveflags);
refcount_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 = skb_push(skb, PDU_HEADER_LENGTH);
+ p_header->pdu_offset = skb->len - PDU_HEADER_LENGTH;
p_header->pdu_proto = 0x01;
- p_header->pdu_flag = 0x00;
if (be16_to_cpu(skb->protocol) == ETH_P_SNAP) {
- p_header->pdu_flag |= PDU_FIRST | PDU_CNTL;
+ p_header->pdu_flag = PDU_FIRST | PDU_CNTL;
} else {
- p_header->pdu_flag |= PDU_FIRST;
+ 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",
@@ -691,7 +683,6 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
skb_queue_tail(&ch->collect_queue, skb);
ch->collect_len += skb->len;
- kfree(p_header);
spin_unlock_irqrestore(&ch->collect_lock, saveflags);
goto done;
@@ -721,23 +712,15 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
}
}
- p_header = kmalloc(PDU_HEADER_LENGTH, gfp_type());
-
- if (!p_header)
- goto nomem_exit;
-
- p_header->pdu_offset = skb->len;
+ p_header = skb_push(skb, PDU_HEADER_LENGTH);
+ p_header->pdu_offset = skb->len - PDU_HEADER_LENGTH;
p_header->pdu_proto = 0x01;
- p_header->pdu_flag = 0x00;
p_header->pdu_seq = 0;
if (be16_to_cpu(skb->protocol) == ETH_P_SNAP) {
- p_header->pdu_flag |= PDU_FIRST | PDU_CNTL;
+ p_header->pdu_flag = PDU_FIRST | PDU_CNTL;
} else {
- p_header->pdu_flag |= PDU_FIRST;
+ p_header->pdu_flag = PDU_FIRST;
}
- memcpy(skb_push(skb, PDU_HEADER_LENGTH), p_header, PDU_HEADER_LENGTH);
-
- kfree(p_header);
if (ch->collect_len > 0) {
spin_lock_irqsave(&ch->collect_lock, saveflags);