qeth: exploit source MAC address for inbound layer3 packets
OSA-devices operating in layer3 mode offer adding of the source MAC
address to the QDIO header of inbound packets. The qeth driver can
exploit this functionality to replace FAKELL-entries in the ethernet
header of received packets.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index c0b30b2..cdd6ab9 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -1207,12 +1207,9 @@
QETH_DBF_TEXT(TRACE, 3, "stsrcmac");
- if (!card->options.fake_ll)
- return -EOPNOTSUPP;
-
if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
dev_info(&card->gdev->dev,
- "Inbound source address not supported on %s\n",
+ "Inbound source MAC-address not supported on %s\n",
QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
@@ -1221,7 +1218,7 @@
IPA_CMD_ASS_START, 0);
if (rc)
dev_warn(&card->gdev->dev,
- "Starting proxy ARP support for %s failed\n",
+ "Starting source MAC-address support for %s failed\n",
QETH_CARD_IFNAME(card));
return rc;
}
@@ -1921,8 +1918,13 @@
memcpy(tg_addr, card->dev->dev_addr,
card->dev->addr_len);
}
- card->dev->header_ops->create(skb, card->dev, prot, tg_addr,
- "FAKELL", card->dev->addr_len);
+ if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
+ card->dev->header_ops->create(skb, card->dev, prot,
+ tg_addr, &hdr->hdr.l3.dest_addr[2],
+ card->dev->addr_len);
+ else
+ card->dev->header_ops->create(skb, card->dev, prot,
+ tg_addr, "FAKELL", card->dev->addr_len);
}
#ifdef CONFIG_TR