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authorJulian Wiedmann <jwi@linux.ibm.com>2019-04-25 18:26:01 +0200
committerDavid S. Miller <davem@davemloft.net>2019-04-26 11:14:06 -0400
commit14a1b04777b6cc1df50cd0587c5db22badd7f4d7 (patch)
treed39e180fad8ad1f84264c662b4cb52c7a1ca2d10 /drivers/s390
parent58aa2491aa615d9618ffc764cc3eaf689053c7a9 (diff)
downloadlinux-14a1b04777b6cc1df50cd0587c5db22badd7f4d7.tar.bz2
s390/qeth: trust non-IP cast type in qeth_l3_fill_header()
When building the L3 HW header for non-IP packets, trust the cast type that was passed as parameter. qeth_l3_get_cast_type() has most likely also used h_dest to determine the cast type, so we get the same result, and can remove that duplicated code. In the unlikely case that we would get a _different_ cast type, then that's based off a route lookup and should be considered authoritative. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/net/qeth_l3_main.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index b5d76ebb488a..0271833da6a2 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -1976,19 +1976,14 @@ static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
}
+ l3_hdr->flags = qeth_l3_cast_type_to_flag(cast_type);
+
/* OSA only: */
if (!ipv) {
- hdr->hdr.l3.flags = QETH_HDR_PASSTHRU;
- if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
- skb->dev->broadcast))
- hdr->hdr.l3.flags |= QETH_CAST_BROADCAST;
- else
- hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ?
- QETH_CAST_MULTICAST : QETH_CAST_UNICAST;
+ l3_hdr->flags |= QETH_HDR_PASSTHRU;
return;
}
- hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type);
rcu_read_lock();
if (ipv == 4) {
struct rtable *rt = skb_rtable(skb);