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qeth: Fix scatter-gather regression

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This patch fixes a scatter-gather regression introduced with

commit 5640f768 net: use a per task frag allocator

Now the qeth driver can cope with bigger framents and split a fragment in
sub framents if required.

Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Frank Blaschka
2013-03-18 20:04:44 +00:00
committed by David S. Miller
parent 82e2e782a3
commit 271648b4c6
3 changed files with 42 additions and 8 deletions
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4
drivers/s390/net/qeth_l3_main.c
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@@ -2903,7 +2903,9 @@ static inline int qeth_l3_tso_elements(struct sk_buff *skb)
tcp_hdr(skb)->doff * 4;
int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
elements += skb_shinfo(skb)->nr_frags;
elements += qeth_get_elements_for_frags(skb);
return elements;
}