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s390/qeth: remove skb_is_nonlinear() check on IQD

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qeth doesn't advertise NETIF_F_SG for L3 IQDs. So trust the stack to
not hand us any nonlinear skbs, and remove an always-true condition.

With the fact that data_offset < 0 is no longer possible on IQDs,
apply a small cleanup to subsequent code.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2017-06-06 14:33:43 +02:00 committed by David S. Miller
parent 4845b93ff2
commit 94a9c981f7
1 changed files with 1 additions and 7 deletions
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8
drivers/s390/net/qeth_l3_main.c
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@ -2676,8 +2676,7 @@ static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
use_tso = skb_is_gso(skb) &&
(qeth_get_ip_protocol(skb) == IPPROTO_TCP) && (ipv == 4);
if ((card->info.type == QETH_CARD_TYPE_IQD) &&
!skb_is_nonlinear(skb)) {
if (card->info.type == QETH_CARD_TYPE_IQD) {
new_skb = skb;
data_offset = ETH_HLEN;
hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
@ -2690,12 +2689,7 @@ static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
+ VLAN_HLEN);
if (!new_skb)
goto tx_drop;
}
if (card->info.type == QETH_CARD_TYPE_IQD) {
if (data_offset < 0)
skb_pull(new_skb, ETH_HLEN);
} else {
if (ipv == 4) {
skb_pull(new_skb, ETH_HLEN);
}