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| author | Ursula Braun <ursula.braun@de.ibm.com> | 2009-01-04 17:34:52 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-01-04 17:34:52 -0800 |
| commit | fe94e2e0a63a49d23753f56eacb446c4f73c1dea (patch) | |
| tree | 6c337b142af1eefef4d2b63f6ef7868503308822 /drivers/s390/net/qeth_l3_main.c | |
| parent | 906f1f0768c736368244ac8fe6023c2b0c31b9ea (diff) | |
| download | linux-3.10-fe94e2e0a63a49d23753f56eacb446c4f73c1dea.tar.gz linux-3.10-fe94e2e0a63a49d23753f56eacb446c4f73c1dea.tar.bz2 linux-3.10-fe94e2e0a63a49d23753f56eacb446c4f73c1dea.zip | |
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>
Diffstat (limited to 'drivers/s390/net/qeth_l3_main.c')
| -rw-r--r-- | drivers/s390/net/qeth_l3_main.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index c0b30b25a5f..cdd6ab9c894 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -1207,12 +1207,9 @@ static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 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 @@ static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 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 @@ static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card, 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 |