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s390/qeth: consolidate qeth MAC address helpers 

For adding/removing a MAC address, use just one helper each that
handles both unicast and multicast.
Saves one level of indirection for multicast addresses, while improving
the error reporting for unicast addresses.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2017-12-20 20:11:00 +01:00 committed by David S. Miller
parent 4641b027f7
commit 8174aa8ace
1 changed files with 18 additions and 29 deletions
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47
drivers/s390/net/qeth_l2_main.c
View File

@ -156,48 +156,37 @@ static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
return rc;
}
static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac)
{
enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ?
IPA_CMD_SETGMAC : IPA_CMD_SETVMAC;
int rc;
QETH_CARD_TEXT(card, 2, "L2Sgmac");
rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC);
QETH_CARD_TEXT(card, 2, "L2Wmac");
rc = qeth_l2_send_setdelmac(card, mac, cmd);
if (rc == -EEXIST)
QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
mac, QETH_CARD_IFNAME(card));
QETH_DBF_MESSAGE(2, "MAC %pM already registered on %s\n",
mac, QETH_CARD_IFNAME(card));
else if (rc)
QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
mac, QETH_CARD_IFNAME(card), rc);
QETH_DBF_MESSAGE(2, "Failed to register MAC %pM on %s: %d\n",
mac, QETH_CARD_IFNAME(card), rc);
return rc;
}
static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac)
{
enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ?
IPA_CMD_DELGMAC : IPA_CMD_DELVMAC;
int rc;
QETH_CARD_TEXT(card, 2, "L2Dgmac");
rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC);
QETH_CARD_TEXT(card, 2, "L2Rmac");
rc = qeth_l2_send_setdelmac(card, mac, cmd);
if (rc)
QETH_DBF_MESSAGE(2,
"Could not delete group MAC %pM on %s: %d\n",
mac, QETH_CARD_IFNAME(card), rc);
QETH_DBF_MESSAGE(2, "Failed to delete MAC %pM on %s: %d\n",
mac, QETH_CARD_IFNAME(card), rc);
return rc;
}
static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
{
if (is_multicast_ether_addr_64bits(mac->mac_addr))
return qeth_l2_send_setgroupmac(card, mac->mac_addr);
return qeth_l2_send_setdelmac(card, mac->mac_addr, IPA_CMD_SETVMAC);
}
static int qeth_l2_remove_mac(struct qeth_card *card, struct qeth_mac *mac)
{
if (is_multicast_ether_addr_64bits(mac->mac_addr))
return qeth_l2_send_delgroupmac(card, mac->mac_addr);
return qeth_l2_send_setdelmac(card, mac->mac_addr, IPA_CMD_DELVMAC);
}
static void qeth_l2_del_all_macs(struct qeth_card *card)
{
struct qeth_mac *mac;
@ -639,12 +628,12 @@ static void qeth_l2_set_rx_mode(struct net_device *dev)
hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
qeth_l2_remove_mac(card, mac);
qeth_l2_remove_mac(card, mac->mac_addr);
hash_del(&mac->hnode);
kfree(mac);
} else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
rc = qeth_l2_write_mac(card, mac);
rc = qeth_l2_write_mac(card, mac->mac_addr);
if (rc) {
hash_del(&mac->hnode);
kfree(mac);