![Sebastian Ott](/assets/img/avatar_default.png)
The interface between qeth and its disciplines should not depend on struct ccwgroup_driver, as a qeth discipline is not a ccwgroup driver on its own. Instead provide the particular callbacks in struct qeth_discipline. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
1348 lines
35 KiB
C
1348 lines
35 KiB
C
/*
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* drivers/s390/net/qeth_l2_main.c
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*
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* Copyright IBM Corp. 2007, 2009
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* Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
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* Frank Pavlic <fpavlic@de.ibm.com>,
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* Thomas Spatzier <tspat@de.ibm.com>,
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* Frank Blaschka <frank.blaschka@de.ibm.com>
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*/
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#define KMSG_COMPONENT "qeth"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/etherdevice.h>
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#include <linux/mii.h>
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#include <linux/ip.h>
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#include <linux/list.h>
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#include "qeth_core.h"
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static int qeth_l2_set_offline(struct ccwgroup_device *);
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static int qeth_l2_stop(struct net_device *);
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static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
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static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
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enum qeth_ipa_cmds,
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int (*reply_cb) (struct qeth_card *,
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struct qeth_reply*,
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unsigned long));
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static void qeth_l2_set_multicast_list(struct net_device *);
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static int qeth_l2_recover(void *);
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static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
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{
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struct qeth_card *card = dev->ml_priv;
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struct mii_ioctl_data *mii_data;
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int rc = 0;
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if (!card)
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return -ENODEV;
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if ((card->state != CARD_STATE_UP) &&
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(card->state != CARD_STATE_SOFTSETUP))
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return -ENODEV;
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if (card->info.type == QETH_CARD_TYPE_OSN)
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return -EPERM;
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switch (cmd) {
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case SIOC_QETH_ADP_SET_SNMP_CONTROL:
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rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
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break;
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case SIOC_QETH_GET_CARD_TYPE:
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if ((card->info.type == QETH_CARD_TYPE_OSD ||
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card->info.type == QETH_CARD_TYPE_OSM ||
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card->info.type == QETH_CARD_TYPE_OSX) &&
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!card->info.guestlan)
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return 1;
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return 0;
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break;
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case SIOCGMIIPHY:
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mii_data = if_mii(rq);
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mii_data->phy_id = 0;
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break;
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case SIOCGMIIREG:
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mii_data = if_mii(rq);
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if (mii_data->phy_id != 0)
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rc = -EINVAL;
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else
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mii_data->val_out = qeth_mdio_read(dev,
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mii_data->phy_id, mii_data->reg_num);
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break;
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case SIOC_QETH_QUERY_OAT:
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rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
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break;
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default:
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rc = -EOPNOTSUPP;
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}
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if (rc)
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QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
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return rc;
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}
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static int qeth_l2_verify_dev(struct net_device *dev)
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{
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struct qeth_card *card;
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unsigned long flags;
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int rc = 0;
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read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
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list_for_each_entry(card, &qeth_core_card_list.list, list) {
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if (card->dev == dev) {
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rc = QETH_REAL_CARD;
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break;
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}
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}
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read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
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return rc;
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}
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static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
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{
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struct qeth_card *card;
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struct net_device *ndev;
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__u16 temp_dev_no;
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unsigned long flags;
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struct ccw_dev_id read_devid;
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ndev = NULL;
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memcpy(&temp_dev_no, read_dev_no, 2);
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read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
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list_for_each_entry(card, &qeth_core_card_list.list, list) {
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ccw_device_get_id(CARD_RDEV(card), &read_devid);
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if (read_devid.devno == temp_dev_no) {
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ndev = card->dev;
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break;
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}
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}
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read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
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return ndev;
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}
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static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
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struct qeth_reply *reply,
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unsigned long data)
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{
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struct qeth_ipa_cmd *cmd;
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__u8 *mac;
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QETH_CARD_TEXT(card, 2, "L2Sgmacb");
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cmd = (struct qeth_ipa_cmd *) data;
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mac = &cmd->data.setdelmac.mac[0];
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/* MAC already registered, needed in couple/uncouple case */
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if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) {
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QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
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mac, QETH_CARD_IFNAME(card));
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cmd->hdr.return_code = 0;
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}
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if (cmd->hdr.return_code)
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QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
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mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
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return 0;
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}
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static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
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{
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QETH_CARD_TEXT(card, 2, "L2Sgmac");
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return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
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qeth_l2_send_setgroupmac_cb);
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}
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static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
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struct qeth_reply *reply,
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unsigned long data)
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{
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struct qeth_ipa_cmd *cmd;
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__u8 *mac;
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QETH_CARD_TEXT(card, 2, "L2Dgmacb");
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cmd = (struct qeth_ipa_cmd *) data;
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mac = &cmd->data.setdelmac.mac[0];
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if (cmd->hdr.return_code)
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QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
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mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
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return 0;
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}
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static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
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{
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QETH_CARD_TEXT(card, 2, "L2Dgmac");
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return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
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qeth_l2_send_delgroupmac_cb);
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}
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static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
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{
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struct qeth_mc_mac *mc;
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int rc;
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mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
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if (!mc)
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return;
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memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
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mc->mc_addrlen = OSA_ADDR_LEN;
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mc->is_vmac = vmac;
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if (vmac) {
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rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
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NULL);
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} else {
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rc = qeth_l2_send_setgroupmac(card, mac);
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}
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if (!rc)
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list_add_tail(&mc->list, &card->mc_list);
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else
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kfree(mc);
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}
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static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
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{
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struct qeth_mc_mac *mc, *tmp;
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spin_lock_bh(&card->mclock);
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list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
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if (del) {
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if (mc->is_vmac)
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qeth_l2_send_setdelmac(card, mc->mc_addr,
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IPA_CMD_DELVMAC, NULL);
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else
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qeth_l2_send_delgroupmac(card, mc->mc_addr);
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}
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list_del(&mc->list);
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kfree(mc);
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}
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spin_unlock_bh(&card->mclock);
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}
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static inline int qeth_l2_get_cast_type(struct qeth_card *card,
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struct sk_buff *skb)
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{
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if (card->info.type == QETH_CARD_TYPE_OSN)
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return RTN_UNSPEC;
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if (is_broadcast_ether_addr(skb->data))
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return RTN_BROADCAST;
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if (is_multicast_ether_addr(skb->data))
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return RTN_MULTICAST;
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return RTN_UNSPEC;
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}
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static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
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struct sk_buff *skb, int ipv, int cast_type)
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{
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struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
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memset(hdr, 0, sizeof(struct qeth_hdr));
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hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
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/* set byte byte 3 to casting flags */
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if (cast_type == RTN_MULTICAST)
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hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
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else if (cast_type == RTN_BROADCAST)
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hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
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else
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hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
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hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
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/* VSWITCH relies on the VLAN
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* information to be present in
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* the QDIO header */
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if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
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hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
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hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
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}
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}
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static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
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struct qeth_reply *reply, unsigned long data)
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{
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struct qeth_ipa_cmd *cmd;
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QETH_CARD_TEXT(card, 2, "L2sdvcb");
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cmd = (struct qeth_ipa_cmd *) data;
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if (cmd->hdr.return_code) {
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QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
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"Continuing\n", cmd->data.setdelvlan.vlan_id,
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QETH_CARD_IFNAME(card), cmd->hdr.return_code);
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QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
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QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
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}
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return 0;
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}
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static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
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enum qeth_ipa_cmds ipacmd)
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{
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struct qeth_ipa_cmd *cmd;
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struct qeth_cmd_buffer *iob;
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QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
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iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
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cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
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cmd->data.setdelvlan.vlan_id = i;
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return qeth_send_ipa_cmd(card, iob,
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qeth_l2_send_setdelvlan_cb, NULL);
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}
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static void qeth_l2_process_vlans(struct qeth_card *card)
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{
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struct qeth_vlan_vid *id;
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QETH_CARD_TEXT(card, 3, "L2prcvln");
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spin_lock_bh(&card->vlanlock);
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list_for_each_entry(id, &card->vid_list, list) {
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qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
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}
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spin_unlock_bh(&card->vlanlock);
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}
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static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
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{
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struct qeth_card *card = dev->ml_priv;
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struct qeth_vlan_vid *id;
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QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
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if (!vid)
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return 0;
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if (card->info.type == QETH_CARD_TYPE_OSM) {
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QETH_CARD_TEXT(card, 3, "aidOSM");
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return 0;
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}
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if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
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QETH_CARD_TEXT(card, 3, "aidREC");
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return 0;
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}
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id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
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if (id) {
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id->vid = vid;
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qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
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spin_lock_bh(&card->vlanlock);
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list_add_tail(&id->list, &card->vid_list);
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spin_unlock_bh(&card->vlanlock);
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} else {
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return -ENOMEM;
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}
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return 0;
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}
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static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
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{
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struct qeth_vlan_vid *id, *tmpid = NULL;
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struct qeth_card *card = dev->ml_priv;
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QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
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if (card->info.type == QETH_CARD_TYPE_OSM) {
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QETH_CARD_TEXT(card, 3, "kidOSM");
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return 0;
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}
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if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
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QETH_CARD_TEXT(card, 3, "kidREC");
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return 0;
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}
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spin_lock_bh(&card->vlanlock);
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list_for_each_entry(id, &card->vid_list, list) {
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if (id->vid == vid) {
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list_del(&id->list);
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tmpid = id;
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break;
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}
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}
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spin_unlock_bh(&card->vlanlock);
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if (tmpid) {
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qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
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kfree(tmpid);
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}
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qeth_l2_set_multicast_list(card->dev);
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return 0;
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}
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static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
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{
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int rc = 0;
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QETH_DBF_TEXT(SETUP , 2, "stopcard");
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QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
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qeth_set_allowed_threads(card, 0, 1);
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if (card->read.state == CH_STATE_UP &&
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card->write.state == CH_STATE_UP &&
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(card->state == CARD_STATE_UP)) {
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if (recovery_mode &&
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card->info.type != QETH_CARD_TYPE_OSN) {
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qeth_l2_stop(card->dev);
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} else {
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rtnl_lock();
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dev_close(card->dev);
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rtnl_unlock();
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}
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card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
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card->state = CARD_STATE_SOFTSETUP;
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}
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if (card->state == CARD_STATE_SOFTSETUP) {
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qeth_l2_del_all_mc(card, 0);
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qeth_clear_ipacmd_list(card);
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card->state = CARD_STATE_HARDSETUP;
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}
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if (card->state == CARD_STATE_HARDSETUP) {
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qeth_qdio_clear_card(card, 0);
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qeth_clear_qdio_buffers(card);
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qeth_clear_working_pool_list(card);
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card->state = CARD_STATE_DOWN;
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}
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if (card->state == CARD_STATE_DOWN) {
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qeth_clear_cmd_buffers(&card->read);
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qeth_clear_cmd_buffers(&card->write);
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}
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return rc;
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}
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static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
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int budget, int *done)
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{
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int work_done = 0;
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struct sk_buff *skb;
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struct qeth_hdr *hdr;
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unsigned int len;
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*done = 0;
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BUG_ON(!budget);
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while (budget) {
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skb = qeth_core_get_next_skb(card,
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&card->qdio.in_q->bufs[card->rx.b_index],
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&card->rx.b_element, &card->rx.e_offset, &hdr);
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if (!skb) {
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*done = 1;
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break;
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}
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skb->dev = card->dev;
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switch (hdr->hdr.l2.id) {
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case QETH_HEADER_TYPE_LAYER2:
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skb->pkt_type = PACKET_HOST;
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skb->protocol = eth_type_trans(skb, skb->dev);
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skb->ip_summed = CHECKSUM_NONE;
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if (skb->protocol == htons(ETH_P_802_2))
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*((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
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len = skb->len;
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netif_receive_skb(skb);
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break;
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case QETH_HEADER_TYPE_OSN:
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if (card->info.type == QETH_CARD_TYPE_OSN) {
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skb_push(skb, sizeof(struct qeth_hdr));
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skb_copy_to_linear_data(skb, hdr,
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sizeof(struct qeth_hdr));
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len = skb->len;
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card->osn_info.data_cb(skb);
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break;
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}
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/* else unknown */
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default:
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dev_kfree_skb_any(skb);
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QETH_CARD_TEXT(card, 3, "inbunkno");
|
|
QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
|
|
continue;
|
|
}
|
|
work_done++;
|
|
budget--;
|
|
card->stats.rx_packets++;
|
|
card->stats.rx_bytes += len;
|
|
}
|
|
return work_done;
|
|
}
|
|
|
|
static int qeth_l2_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct qeth_card *card = container_of(napi, struct qeth_card, napi);
|
|
int work_done = 0;
|
|
struct qeth_qdio_buffer *buffer;
|
|
int done;
|
|
int new_budget = budget;
|
|
|
|
if (card->options.performance_stats) {
|
|
card->perf_stats.inbound_cnt++;
|
|
card->perf_stats.inbound_start_time = qeth_get_micros();
|
|
}
|
|
|
|
while (1) {
|
|
if (!card->rx.b_count) {
|
|
card->rx.qdio_err = 0;
|
|
card->rx.b_count = qdio_get_next_buffers(
|
|
card->data.ccwdev, 0, &card->rx.b_index,
|
|
&card->rx.qdio_err);
|
|
if (card->rx.b_count <= 0) {
|
|
card->rx.b_count = 0;
|
|
break;
|
|
}
|
|
card->rx.b_element =
|
|
&card->qdio.in_q->bufs[card->rx.b_index]
|
|
.buffer->element[0];
|
|
card->rx.e_offset = 0;
|
|
}
|
|
|
|
while (card->rx.b_count) {
|
|
buffer = &card->qdio.in_q->bufs[card->rx.b_index];
|
|
if (!(card->rx.qdio_err &&
|
|
qeth_check_qdio_errors(card, buffer->buffer,
|
|
card->rx.qdio_err, "qinerr")))
|
|
work_done += qeth_l2_process_inbound_buffer(
|
|
card, new_budget, &done);
|
|
else
|
|
done = 1;
|
|
|
|
if (done) {
|
|
if (card->options.performance_stats)
|
|
card->perf_stats.bufs_rec++;
|
|
qeth_put_buffer_pool_entry(card,
|
|
buffer->pool_entry);
|
|
qeth_queue_input_buffer(card, card->rx.b_index);
|
|
card->rx.b_count--;
|
|
if (card->rx.b_count) {
|
|
card->rx.b_index =
|
|
(card->rx.b_index + 1) %
|
|
QDIO_MAX_BUFFERS_PER_Q;
|
|
card->rx.b_element =
|
|
&card->qdio.in_q
|
|
->bufs[card->rx.b_index]
|
|
.buffer->element[0];
|
|
card->rx.e_offset = 0;
|
|
}
|
|
}
|
|
|
|
if (work_done >= budget)
|
|
goto out;
|
|
else
|
|
new_budget = budget - work_done;
|
|
}
|
|
}
|
|
|
|
napi_complete(napi);
|
|
if (qdio_start_irq(card->data.ccwdev, 0))
|
|
napi_schedule(&card->napi);
|
|
out:
|
|
if (card->options.performance_stats)
|
|
card->perf_stats.inbound_time += qeth_get_micros() -
|
|
card->perf_stats.inbound_start_time;
|
|
return work_done;
|
|
}
|
|
|
|
static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
|
|
enum qeth_ipa_cmds ipacmd,
|
|
int (*reply_cb) (struct qeth_card *,
|
|
struct qeth_reply*,
|
|
unsigned long))
|
|
{
|
|
struct qeth_ipa_cmd *cmd;
|
|
struct qeth_cmd_buffer *iob;
|
|
|
|
QETH_CARD_TEXT(card, 2, "L2sdmac");
|
|
iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
|
|
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
|
|
cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
|
|
memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
|
|
return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
|
|
}
|
|
|
|
static int qeth_l2_send_setmac_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd;
|
|
|
|
QETH_CARD_TEXT(card, 2, "L2Smaccb");
|
|
cmd = (struct qeth_ipa_cmd *) data;
|
|
if (cmd->hdr.return_code) {
|
|
QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
|
|
card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
|
|
switch (cmd->hdr.return_code) {
|
|
case IPA_RC_L2_DUP_MAC:
|
|
case IPA_RC_L2_DUP_LAYER3_MAC:
|
|
dev_warn(&card->gdev->dev,
|
|
"MAC address %pM already exists\n",
|
|
cmd->data.setdelmac.mac);
|
|
break;
|
|
case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
|
|
case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
|
|
dev_warn(&card->gdev->dev,
|
|
"MAC address %pM is not authorized\n",
|
|
cmd->data.setdelmac.mac);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else {
|
|
card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
|
|
memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
|
|
OSA_ADDR_LEN);
|
|
dev_info(&card->gdev->dev,
|
|
"MAC address %pM successfully registered on device %s\n",
|
|
card->dev->dev_addr, card->dev->name);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
|
|
{
|
|
QETH_CARD_TEXT(card, 2, "L2Setmac");
|
|
return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
|
|
qeth_l2_send_setmac_cb);
|
|
}
|
|
|
|
static int qeth_l2_send_delmac_cb(struct qeth_card *card,
|
|
struct qeth_reply *reply,
|
|
unsigned long data)
|
|
{
|
|
struct qeth_ipa_cmd *cmd;
|
|
|
|
QETH_CARD_TEXT(card, 2, "L2Dmaccb");
|
|
cmd = (struct qeth_ipa_cmd *) data;
|
|
if (cmd->hdr.return_code) {
|
|
QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
|
|
return 0;
|
|
}
|
|
card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
|
|
{
|
|
QETH_CARD_TEXT(card, 2, "L2Delmac");
|
|
if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
|
|
return 0;
|
|
return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
|
|
qeth_l2_send_delmac_cb);
|
|
}
|
|
|
|
static int qeth_l2_request_initial_mac(struct qeth_card *card)
|
|
{
|
|
int rc = 0;
|
|
char vendor_pre[] = {0x02, 0x00, 0x00};
|
|
|
|
QETH_DBF_TEXT(SETUP, 2, "doL2init");
|
|
QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
|
|
|
|
rc = qeth_query_setadapterparms(card);
|
|
if (rc) {
|
|
QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
|
|
"device %s: x%x\n", CARD_BUS_ID(card), rc);
|
|
}
|
|
|
|
if (card->info.type == QETH_CARD_TYPE_IQD ||
|
|
card->info.type == QETH_CARD_TYPE_OSM ||
|
|
card->info.type == QETH_CARD_TYPE_OSX ||
|
|
card->info.guestlan) {
|
|
rc = qeth_setadpparms_change_macaddr(card);
|
|
if (rc) {
|
|
QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
|
|
"device %s: x%x\n", CARD_BUS_ID(card), rc);
|
|
QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
|
|
return rc;
|
|
}
|
|
QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
|
|
} else {
|
|
random_ether_addr(card->dev->dev_addr);
|
|
memcpy(card->dev->dev_addr, vendor_pre, 3);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
|
|
{
|
|
struct sockaddr *addr = p;
|
|
struct qeth_card *card = dev->ml_priv;
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 3, "setmac");
|
|
|
|
if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
|
|
QETH_CARD_TEXT(card, 3, "setmcINV");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (card->info.type == QETH_CARD_TYPE_OSN ||
|
|
card->info.type == QETH_CARD_TYPE_OSM ||
|
|
card->info.type == QETH_CARD_TYPE_OSX) {
|
|
QETH_CARD_TEXT(card, 3, "setmcTYP");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
|
|
if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
|
|
QETH_CARD_TEXT(card, 3, "setmcREC");
|
|
return -ERESTARTSYS;
|
|
}
|
|
rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
|
|
if (!rc)
|
|
rc = qeth_l2_send_setmac(card, addr->sa_data);
|
|
return rc ? -EINVAL : 0;
|
|
}
|
|
|
|
static void qeth_l2_set_multicast_list(struct net_device *dev)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
struct netdev_hw_addr *ha;
|
|
|
|
if (card->info.type == QETH_CARD_TYPE_OSN)
|
|
return ;
|
|
|
|
QETH_CARD_TEXT(card, 3, "setmulti");
|
|
if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
|
|
(card->state != CARD_STATE_UP))
|
|
return;
|
|
qeth_l2_del_all_mc(card, 1);
|
|
spin_lock_bh(&card->mclock);
|
|
netdev_for_each_mc_addr(ha, dev)
|
|
qeth_l2_add_mc(card, ha->addr, 0);
|
|
|
|
netdev_for_each_uc_addr(ha, dev)
|
|
qeth_l2_add_mc(card, ha->addr, 1);
|
|
|
|
spin_unlock_bh(&card->mclock);
|
|
if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
|
|
return;
|
|
qeth_setadp_promisc_mode(card);
|
|
}
|
|
|
|
static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
int rc;
|
|
struct qeth_hdr *hdr = NULL;
|
|
int elements = 0;
|
|
struct qeth_card *card = dev->ml_priv;
|
|
struct sk_buff *new_skb = skb;
|
|
int ipv = qeth_get_ip_version(skb);
|
|
int cast_type = qeth_l2_get_cast_type(card, skb);
|
|
struct qeth_qdio_out_q *queue = card->qdio.out_qs
|
|
[qeth_get_priority_queue(card, skb, ipv, cast_type)];
|
|
int tx_bytes = skb->len;
|
|
int data_offset = -1;
|
|
int elements_needed = 0;
|
|
int hd_len = 0;
|
|
|
|
if ((card->state != CARD_STATE_UP) || !card->lan_online) {
|
|
card->stats.tx_carrier_errors++;
|
|
goto tx_drop;
|
|
}
|
|
|
|
if ((card->info.type == QETH_CARD_TYPE_OSN) &&
|
|
(skb->protocol == htons(ETH_P_IPV6)))
|
|
goto tx_drop;
|
|
|
|
if (card->options.performance_stats) {
|
|
card->perf_stats.outbound_cnt++;
|
|
card->perf_stats.outbound_start_time = qeth_get_micros();
|
|
}
|
|
netif_stop_queue(dev);
|
|
|
|
if (card->info.type == QETH_CARD_TYPE_OSN)
|
|
hdr = (struct qeth_hdr *)skb->data;
|
|
else {
|
|
if (card->info.type == QETH_CARD_TYPE_IQD) {
|
|
new_skb = skb;
|
|
data_offset = ETH_HLEN;
|
|
hd_len = ETH_HLEN;
|
|
hdr = kmem_cache_alloc(qeth_core_header_cache,
|
|
GFP_ATOMIC);
|
|
if (!hdr)
|
|
goto tx_drop;
|
|
elements_needed++;
|
|
skb_reset_mac_header(new_skb);
|
|
qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
|
|
hdr->hdr.l2.pkt_length = new_skb->len;
|
|
memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
|
|
skb_mac_header(new_skb), ETH_HLEN);
|
|
} else {
|
|
/* create a clone with writeable headroom */
|
|
new_skb = skb_realloc_headroom(skb,
|
|
sizeof(struct qeth_hdr));
|
|
if (!new_skb)
|
|
goto tx_drop;
|
|
hdr = (struct qeth_hdr *)skb_push(new_skb,
|
|
sizeof(struct qeth_hdr));
|
|
skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
|
|
qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
|
|
}
|
|
}
|
|
|
|
elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
|
|
elements_needed);
|
|
if (!elements) {
|
|
if (data_offset >= 0)
|
|
kmem_cache_free(qeth_core_header_cache, hdr);
|
|
goto tx_drop;
|
|
}
|
|
|
|
if (card->info.type != QETH_CARD_TYPE_IQD) {
|
|
if (qeth_hdr_chk_and_bounce(new_skb,
|
|
sizeof(struct qeth_hdr_layer2)))
|
|
goto tx_drop;
|
|
rc = qeth_do_send_packet(card, queue, new_skb, hdr,
|
|
elements);
|
|
} else
|
|
rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
|
|
elements, data_offset, hd_len);
|
|
if (!rc) {
|
|
card->stats.tx_packets++;
|
|
card->stats.tx_bytes += tx_bytes;
|
|
if (new_skb != skb)
|
|
dev_kfree_skb_any(skb);
|
|
rc = NETDEV_TX_OK;
|
|
} else {
|
|
if (data_offset >= 0)
|
|
kmem_cache_free(qeth_core_header_cache, hdr);
|
|
|
|
if (rc == -EBUSY) {
|
|
if (new_skb != skb)
|
|
dev_kfree_skb_any(new_skb);
|
|
return NETDEV_TX_BUSY;
|
|
} else
|
|
goto tx_drop;
|
|
}
|
|
|
|
netif_wake_queue(dev);
|
|
if (card->options.performance_stats)
|
|
card->perf_stats.outbound_time += qeth_get_micros() -
|
|
card->perf_stats.outbound_start_time;
|
|
return rc;
|
|
|
|
tx_drop:
|
|
card->stats.tx_dropped++;
|
|
card->stats.tx_errors++;
|
|
if ((new_skb != skb) && new_skb)
|
|
dev_kfree_skb_any(new_skb);
|
|
dev_kfree_skb_any(skb);
|
|
netif_wake_queue(dev);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static int __qeth_l2_open(struct net_device *dev)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 4, "qethopen");
|
|
if (card->state == CARD_STATE_UP)
|
|
return rc;
|
|
if (card->state != CARD_STATE_SOFTSETUP)
|
|
return -ENODEV;
|
|
|
|
if ((card->info.type != QETH_CARD_TYPE_OSN) &&
|
|
(!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
|
|
QETH_CARD_TEXT(card, 4, "nomacadr");
|
|
return -EPERM;
|
|
}
|
|
card->data.state = CH_STATE_UP;
|
|
card->state = CARD_STATE_UP;
|
|
netif_start_queue(dev);
|
|
|
|
if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
|
|
napi_enable(&card->napi);
|
|
napi_schedule(&card->napi);
|
|
} else
|
|
rc = -EIO;
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l2_open(struct net_device *dev)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
|
|
QETH_CARD_TEXT(card, 5, "qethope_");
|
|
if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
|
|
QETH_CARD_TEXT(card, 3, "openREC");
|
|
return -ERESTARTSYS;
|
|
}
|
|
return __qeth_l2_open(dev);
|
|
}
|
|
|
|
static int qeth_l2_stop(struct net_device *dev)
|
|
{
|
|
struct qeth_card *card = dev->ml_priv;
|
|
|
|
QETH_CARD_TEXT(card, 4, "qethstop");
|
|
netif_tx_disable(dev);
|
|
if (card->state == CARD_STATE_UP) {
|
|
card->state = CARD_STATE_SOFTSETUP;
|
|
napi_disable(&card->napi);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
|
|
|
|
INIT_LIST_HEAD(&card->vid_list);
|
|
INIT_LIST_HEAD(&card->mc_list);
|
|
card->options.layer2 = 1;
|
|
card->info.hwtrap = 0;
|
|
return 0;
|
|
}
|
|
|
|
static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
|
|
|
|
qeth_set_allowed_threads(card, 0, 1);
|
|
wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
|
|
|
|
if (cgdev->state == CCWGROUP_ONLINE)
|
|
qeth_l2_set_offline(cgdev);
|
|
|
|
if (card->dev) {
|
|
unregister_netdev(card->dev);
|
|
card->dev = NULL;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static const struct ethtool_ops qeth_l2_ethtool_ops = {
|
|
.get_link = ethtool_op_get_link,
|
|
.get_strings = qeth_core_get_strings,
|
|
.get_ethtool_stats = qeth_core_get_ethtool_stats,
|
|
.get_sset_count = qeth_core_get_sset_count,
|
|
.get_drvinfo = qeth_core_get_drvinfo,
|
|
.get_settings = qeth_core_ethtool_get_settings,
|
|
};
|
|
|
|
static const struct ethtool_ops qeth_l2_osn_ops = {
|
|
.get_strings = qeth_core_get_strings,
|
|
.get_ethtool_stats = qeth_core_get_ethtool_stats,
|
|
.get_sset_count = qeth_core_get_sset_count,
|
|
.get_drvinfo = qeth_core_get_drvinfo,
|
|
};
|
|
|
|
static const struct net_device_ops qeth_l2_netdev_ops = {
|
|
.ndo_open = qeth_l2_open,
|
|
.ndo_stop = qeth_l2_stop,
|
|
.ndo_get_stats = qeth_get_stats,
|
|
.ndo_start_xmit = qeth_l2_hard_start_xmit,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_rx_mode = qeth_l2_set_multicast_list,
|
|
.ndo_do_ioctl = qeth_l2_do_ioctl,
|
|
.ndo_set_mac_address = qeth_l2_set_mac_address,
|
|
.ndo_change_mtu = qeth_change_mtu,
|
|
.ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid,
|
|
.ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid,
|
|
.ndo_tx_timeout = qeth_tx_timeout,
|
|
};
|
|
|
|
static int qeth_l2_setup_netdev(struct qeth_card *card)
|
|
{
|
|
switch (card->info.type) {
|
|
case QETH_CARD_TYPE_IQD:
|
|
card->dev = alloc_netdev(0, "hsi%d", ether_setup);
|
|
break;
|
|
case QETH_CARD_TYPE_OSN:
|
|
card->dev = alloc_netdev(0, "osn%d", ether_setup);
|
|
card->dev->flags |= IFF_NOARP;
|
|
break;
|
|
default:
|
|
card->dev = alloc_etherdev(0);
|
|
}
|
|
|
|
if (!card->dev)
|
|
return -ENODEV;
|
|
|
|
card->dev->ml_priv = card;
|
|
card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
|
|
card->dev->mtu = card->info.initial_mtu;
|
|
card->dev->netdev_ops = &qeth_l2_netdev_ops;
|
|
if (card->info.type != QETH_CARD_TYPE_OSN)
|
|
SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
|
|
else
|
|
SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
|
|
card->dev->features |= NETIF_F_HW_VLAN_FILTER;
|
|
card->info.broadcast_capable = 1;
|
|
qeth_l2_request_initial_mac(card);
|
|
SET_NETDEV_DEV(card->dev, &card->gdev->dev);
|
|
netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
|
|
return register_netdev(card->dev);
|
|
}
|
|
|
|
static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
|
|
int rc = 0;
|
|
enum qeth_card_states recover_flag;
|
|
|
|
BUG_ON(!card);
|
|
mutex_lock(&card->discipline_mutex);
|
|
mutex_lock(&card->conf_mutex);
|
|
QETH_DBF_TEXT(SETUP, 2, "setonlin");
|
|
QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
|
|
|
|
recover_flag = card->state;
|
|
rc = qeth_core_hardsetup_card(card);
|
|
if (rc) {
|
|
QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
|
|
rc = -ENODEV;
|
|
goto out_remove;
|
|
}
|
|
|
|
if (!card->dev && qeth_l2_setup_netdev(card)) {
|
|
rc = -ENODEV;
|
|
goto out_remove;
|
|
}
|
|
|
|
if (card->info.type != QETH_CARD_TYPE_OSN)
|
|
qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
|
|
|
|
if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
|
|
if (card->info.hwtrap &&
|
|
qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
|
|
card->info.hwtrap = 0;
|
|
} else
|
|
card->info.hwtrap = 0;
|
|
|
|
card->state = CARD_STATE_HARDSETUP;
|
|
memset(&card->rx, 0, sizeof(struct qeth_rx));
|
|
qeth_print_status_message(card);
|
|
|
|
/* softsetup */
|
|
QETH_DBF_TEXT(SETUP, 2, "softsetp");
|
|
|
|
rc = qeth_send_startlan(card);
|
|
if (rc) {
|
|
QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
|
|
if (rc == 0xe080) {
|
|
dev_warn(&card->gdev->dev,
|
|
"The LAN is offline\n");
|
|
card->lan_online = 0;
|
|
goto contin;
|
|
}
|
|
rc = -ENODEV;
|
|
goto out_remove;
|
|
} else
|
|
card->lan_online = 1;
|
|
|
|
contin:
|
|
if ((card->info.type == QETH_CARD_TYPE_OSD) ||
|
|
(card->info.type == QETH_CARD_TYPE_OSX))
|
|
/* configure isolation level */
|
|
qeth_set_access_ctrl_online(card);
|
|
|
|
if (card->info.type != QETH_CARD_TYPE_OSN &&
|
|
card->info.type != QETH_CARD_TYPE_OSM)
|
|
qeth_l2_process_vlans(card);
|
|
|
|
netif_tx_disable(card->dev);
|
|
|
|
rc = qeth_init_qdio_queues(card);
|
|
if (rc) {
|
|
QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
|
|
rc = -ENODEV;
|
|
goto out_remove;
|
|
}
|
|
card->state = CARD_STATE_SOFTSETUP;
|
|
if (card->lan_online)
|
|
netif_carrier_on(card->dev);
|
|
else
|
|
netif_carrier_off(card->dev);
|
|
|
|
qeth_set_allowed_threads(card, 0xffffffff, 0);
|
|
if (recover_flag == CARD_STATE_RECOVER) {
|
|
if (recovery_mode &&
|
|
card->info.type != QETH_CARD_TYPE_OSN) {
|
|
__qeth_l2_open(card->dev);
|
|
} else {
|
|
rtnl_lock();
|
|
dev_open(card->dev);
|
|
rtnl_unlock();
|
|
}
|
|
/* this also sets saved unicast addresses */
|
|
qeth_l2_set_multicast_list(card->dev);
|
|
}
|
|
/* let user_space know that device is online */
|
|
kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
|
|
mutex_unlock(&card->conf_mutex);
|
|
mutex_unlock(&card->discipline_mutex);
|
|
return 0;
|
|
|
|
out_remove:
|
|
qeth_l2_stop_card(card, 0);
|
|
ccw_device_set_offline(CARD_DDEV(card));
|
|
ccw_device_set_offline(CARD_WDEV(card));
|
|
ccw_device_set_offline(CARD_RDEV(card));
|
|
if (recover_flag == CARD_STATE_RECOVER)
|
|
card->state = CARD_STATE_RECOVER;
|
|
else
|
|
card->state = CARD_STATE_DOWN;
|
|
mutex_unlock(&card->conf_mutex);
|
|
mutex_unlock(&card->discipline_mutex);
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_l2_set_online(struct ccwgroup_device *gdev)
|
|
{
|
|
return __qeth_l2_set_online(gdev, 0);
|
|
}
|
|
|
|
static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
|
|
int recovery_mode)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
|
|
int rc = 0, rc2 = 0, rc3 = 0;
|
|
enum qeth_card_states recover_flag;
|
|
|
|
mutex_lock(&card->discipline_mutex);
|
|
mutex_lock(&card->conf_mutex);
|
|
QETH_DBF_TEXT(SETUP, 3, "setoffl");
|
|
QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
|
|
|
|
if (card->dev && netif_carrier_ok(card->dev))
|
|
netif_carrier_off(card->dev);
|
|
recover_flag = card->state;
|
|
if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
|
|
qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
|
|
card->info.hwtrap = 1;
|
|
}
|
|
qeth_l2_stop_card(card, recovery_mode);
|
|
rc = ccw_device_set_offline(CARD_DDEV(card));
|
|
rc2 = ccw_device_set_offline(CARD_WDEV(card));
|
|
rc3 = ccw_device_set_offline(CARD_RDEV(card));
|
|
if (!rc)
|
|
rc = (rc2) ? rc2 : rc3;
|
|
if (rc)
|
|
QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
|
|
if (recover_flag == CARD_STATE_UP)
|
|
card->state = CARD_STATE_RECOVER;
|
|
/* let user_space know that device is offline */
|
|
kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
|
|
mutex_unlock(&card->conf_mutex);
|
|
mutex_unlock(&card->discipline_mutex);
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
|
|
{
|
|
return __qeth_l2_set_offline(cgdev, 0);
|
|
}
|
|
|
|
static int qeth_l2_recover(void *ptr)
|
|
{
|
|
struct qeth_card *card;
|
|
int rc = 0;
|
|
|
|
card = (struct qeth_card *) ptr;
|
|
QETH_CARD_TEXT(card, 2, "recover1");
|
|
if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
|
|
return 0;
|
|
QETH_CARD_TEXT(card, 2, "recover2");
|
|
dev_warn(&card->gdev->dev,
|
|
"A recovery process has been started for the device\n");
|
|
__qeth_l2_set_offline(card->gdev, 1);
|
|
rc = __qeth_l2_set_online(card->gdev, 1);
|
|
if (!rc)
|
|
dev_info(&card->gdev->dev,
|
|
"Device successfully recovered!\n");
|
|
else {
|
|
rtnl_lock();
|
|
dev_close(card->dev);
|
|
rtnl_unlock();
|
|
dev_warn(&card->gdev->dev, "The qeth device driver "
|
|
"failed to recover an error on the device\n");
|
|
}
|
|
qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
|
|
qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
|
|
return 0;
|
|
}
|
|
|
|
static int __init qeth_l2_init(void)
|
|
{
|
|
pr_info("register layer 2 discipline\n");
|
|
return 0;
|
|
}
|
|
|
|
static void __exit qeth_l2_exit(void)
|
|
{
|
|
pr_info("unregister layer 2 discipline\n");
|
|
}
|
|
|
|
static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
|
|
qeth_set_allowed_threads(card, 0, 1);
|
|
if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
|
|
qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
|
|
qeth_qdio_clear_card(card, 0);
|
|
qeth_clear_qdio_buffers(card);
|
|
}
|
|
|
|
static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
|
|
|
|
if (card->dev)
|
|
netif_device_detach(card->dev);
|
|
qeth_set_allowed_threads(card, 0, 1);
|
|
wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
|
|
if (gdev->state == CCWGROUP_OFFLINE)
|
|
return 0;
|
|
if (card->state == CARD_STATE_UP) {
|
|
if (card->info.hwtrap)
|
|
qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
|
|
__qeth_l2_set_offline(card->gdev, 1);
|
|
} else
|
|
__qeth_l2_set_offline(card->gdev, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
|
|
{
|
|
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
|
|
int rc = 0;
|
|
|
|
if (gdev->state == CCWGROUP_OFFLINE)
|
|
goto out;
|
|
|
|
if (card->state == CARD_STATE_RECOVER) {
|
|
rc = __qeth_l2_set_online(card->gdev, 1);
|
|
if (rc) {
|
|
rtnl_lock();
|
|
dev_close(card->dev);
|
|
rtnl_unlock();
|
|
}
|
|
} else
|
|
rc = __qeth_l2_set_online(card->gdev, 0);
|
|
out:
|
|
qeth_set_allowed_threads(card, 0xffffffff, 0);
|
|
if (card->dev)
|
|
netif_device_attach(card->dev);
|
|
if (rc)
|
|
dev_warn(&card->gdev->dev, "The qeth device driver "
|
|
"failed to recover an error on the device\n");
|
|
return rc;
|
|
}
|
|
|
|
struct qeth_discipline qeth_l2_discipline = {
|
|
.start_poll = qeth_qdio_start_poll,
|
|
.input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
|
|
.output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
|
|
.recover = qeth_l2_recover,
|
|
.setup = qeth_l2_probe_device,
|
|
.remove = qeth_l2_remove_device,
|
|
.set_online = qeth_l2_set_online,
|
|
.set_offline = qeth_l2_set_offline,
|
|
.shutdown = qeth_l2_shutdown,
|
|
.freeze = qeth_l2_pm_suspend,
|
|
.thaw = qeth_l2_pm_resume,
|
|
.restore = qeth_l2_pm_resume,
|
|
};
|
|
EXPORT_SYMBOL_GPL(qeth_l2_discipline);
|
|
|
|
static int qeth_osn_send_control_data(struct qeth_card *card, int len,
|
|
struct qeth_cmd_buffer *iob)
|
|
{
|
|
unsigned long flags;
|
|
int rc = 0;
|
|
|
|
QETH_CARD_TEXT(card, 5, "osndctrd");
|
|
|
|
wait_event(card->wait_q,
|
|
atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
|
|
qeth_prepare_control_data(card, len, iob);
|
|
QETH_CARD_TEXT(card, 6, "osnoirqp");
|
|
spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
|
|
rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
|
|
(addr_t) iob, 0, 0);
|
|
spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
|
|
if (rc) {
|
|
QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
|
|
"ccw_device_start rc = %i\n", rc);
|
|
QETH_CARD_TEXT_(card, 2, " err%d", rc);
|
|
qeth_release_buffer(iob->channel, iob);
|
|
atomic_set(&card->write.irq_pending, 0);
|
|
wake_up(&card->wait_q);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
|
|
struct qeth_cmd_buffer *iob, int data_len)
|
|
{
|
|
u16 s1, s2;
|
|
|
|
QETH_CARD_TEXT(card, 4, "osndipa");
|
|
|
|
qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
|
|
s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
|
|
s2 = (u16)data_len;
|
|
memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
|
|
memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
|
|
memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
|
|
memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
|
|
return qeth_osn_send_control_data(card, s1, iob);
|
|
}
|
|
|
|
int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
|
|
{
|
|
struct qeth_cmd_buffer *iob;
|
|
struct qeth_card *card;
|
|
int rc;
|
|
|
|
if (!dev)
|
|
return -ENODEV;
|
|
card = dev->ml_priv;
|
|
if (!card)
|
|
return -ENODEV;
|
|
QETH_CARD_TEXT(card, 2, "osnsdmc");
|
|
if ((card->state != CARD_STATE_UP) &&
|
|
(card->state != CARD_STATE_SOFTSETUP))
|
|
return -ENODEV;
|
|
iob = qeth_wait_for_buffer(&card->write);
|
|
memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
|
|
rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(qeth_osn_assist);
|
|
|
|
int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
|
|
int (*assist_cb)(struct net_device *, void *),
|
|
int (*data_cb)(struct sk_buff *))
|
|
{
|
|
struct qeth_card *card;
|
|
|
|
*dev = qeth_l2_netdev_by_devno(read_dev_no);
|
|
if (*dev == NULL)
|
|
return -ENODEV;
|
|
card = (*dev)->ml_priv;
|
|
if (!card)
|
|
return -ENODEV;
|
|
QETH_CARD_TEXT(card, 2, "osnreg");
|
|
if ((assist_cb == NULL) || (data_cb == NULL))
|
|
return -EINVAL;
|
|
card->osn_info.assist_cb = assist_cb;
|
|
card->osn_info.data_cb = data_cb;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(qeth_osn_register);
|
|
|
|
void qeth_osn_deregister(struct net_device *dev)
|
|
{
|
|
struct qeth_card *card;
|
|
|
|
if (!dev)
|
|
return;
|
|
card = dev->ml_priv;
|
|
if (!card)
|
|
return;
|
|
QETH_CARD_TEXT(card, 2, "osndereg");
|
|
card->osn_info.assist_cb = NULL;
|
|
card->osn_info.data_cb = NULL;
|
|
return;
|
|
}
|
|
EXPORT_SYMBOL(qeth_osn_deregister);
|
|
|
|
module_init(qeth_l2_init);
|
|
module_exit(qeth_l2_exit);
|
|
MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
|
|
MODULE_DESCRIPTION("qeth layer 2 discipline");
|
|
MODULE_LICENSE("GPL");
|