diff options
| author | Klaus D. Wacker <kdwacker@de.ibm.com> | 2007-08-29 13:26:58 +0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-08-31 14:52:58 +0400 |
| commit | 54d0f56e63edb1aa3901ea6389bf7ea5d43d0c22 (patch) | |
| tree | b94d156937b8fe39041c2db4f5c832fc8c2afbd0 /drivers/s390 | |
| parent | 6e55cab9f004e6e7a9ab5d7b27fb705ed0de838e (diff) | |
| download | linux-54d0f56e63edb1aa3901ea6389bf7ea5d43d0c22.tar.xz | |
qeth: Drop ARP packages on HiperSockets interface with NOARP attribute.
A network interface can get ARP packets even when the interface has
NOARP specified. In a HiperSockets environment this disturbs receiving
systems when packets are sent on the multicast queue. (E.g. TCP/IP on
z/VM issues messages reporting invalid data on the HiperSockets
interface.)
Qeth will no longer send ARP packets on HiperSockets interface when
interface has the NOARP attribute.
Signed-off-by: Klaus D. Wacker <kdwacker@de.ibm.com>
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/net/qeth_main.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c index 617fbfd767fa..f3e6fbeb2123 100644 --- a/drivers/s390/net/qeth_main.c +++ b/drivers/s390/net/qeth_main.c @@ -2505,7 +2505,7 @@ qeth_rebuild_skb_fake_ll_tr(struct qeth_card *card, struct sk_buff *skb, struct iphdr *ip_hdr; QETH_DBF_TEXT(trace,5,"skbfktr"); - skb_set_mac_header(skb, -QETH_FAKE_LL_LEN_TR); + skb_set_mac_header(skb, (int)-QETH_FAKE_LL_LEN_TR); /* this is a fake ethernet header */ fake_hdr = tr_hdr(skb); @@ -4710,9 +4710,15 @@ qeth_send_packet(struct qeth_card *card, struct sk_buff *skb) if (card->info.type != QETH_CARD_TYPE_IQD) rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements_needed, ctx); - else + else { + if ((skb->protocol == htons(ETH_P_ARP)) && + (card->dev->flags & IFF_NOARP)) { + __qeth_free_new_skb(skb, new_skb); + return -EPERM; + } rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, elements_needed, ctx); + } if (!rc) { card->stats.tx_packets++; card->stats.tx_bytes += tx_bytes; |