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qeth: optimize IP handling in rx_mode callback

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In layer3 mode of the qeth driver, multicast IP addresses
from struct net_device and other type of IP addresses
from other sources require mapping to the OSA-card.
This patch simplifies the IP address mapping logic, and changes imple-
mentation of ndo_set_rx_mode callback and ip notifier events.
Addresses are stored in private hashtables instead of lists now.
It allows hardware registration/removal for new/deleted multicast
addresses only.

Signed-off-by: Lakhvich Dmitriy <ldmitriy@ru.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Evgeny Cherkashin <Eugene.Crosser@ru.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lakhvich Dmitriy
2016-06-16 16:18:58 +02:00
committed by David S. Miller
parent 6059c90537
commit 5f78e29cee
7 changed files with 487 additions and 463 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/s390/net/qeth_l2_main.c
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@@ -780,7 +780,7 @@ qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
qeth_l2_mac_hash(ha->addr)) {
if (is_uc == mac->is_uc &&
!memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
mac->disp_flag = QETH_DISP_MAC_DO_NOTHING;
mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
return;
}
}
@@ -792,7 +792,7 @@ qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
mac->is_uc = is_uc;
mac->disp_flag = QETH_DISP_MAC_ADD;
mac->disp_flag = QETH_DISP_ADDR_ADD;
hash_add(card->mac_htable, &mac->hnode,
qeth_l2_mac_hash(mac->mac_addr));
@@ -825,7 +825,7 @@ static void qeth_l2_set_rx_mode(struct net_device *dev)
qeth_l2_add_mac(card, ha, 1);
hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
if (mac->disp_flag == QETH_DISP_MAC_DELETE) {
if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
if (!mac->is_uc)
rc = qeth_l2_send_delgroupmac(card,
mac->mac_addr);
@@ -837,15 +837,15 @@ static void qeth_l2_set_rx_mode(struct net_device *dev)
hash_del(&mac->hnode);
kfree(mac);
} else if (mac->disp_flag == QETH_DISP_MAC_ADD) {
} else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
rc = qeth_l2_write_mac(card, mac);
if (rc) {
hash_del(&mac->hnode);
kfree(mac);
} else
mac->disp_flag = QETH_DISP_MAC_DELETE;
mac->disp_flag = QETH_DISP_ADDR_DELETE;
} else
mac->disp_flag = QETH_DISP_MAC_DELETE;
mac->disp_flag = QETH_DISP_ADDR_DELETE;
}
spin_unlock_bh(&card->mclock);