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IQD devices offer limited support for bulking: all frames in a TX buffer need to have the same target. qeth_iqd_may_bulk() implements this constraint, and allows us to defer the TX doorbell until (a) the buffer is full (since each buffer needs its own doorbell), or (b) the entire TX queue is full, or (b) we reached the BQL limit. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1107 lines
29 KiB
C
1107 lines
29 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright IBM Corp. 2007
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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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#ifndef __QETH_CORE_H__
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#define __QETH_CORE_H__
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#include <linux/completion.h>
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#include <linux/if.h>
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#include <linux/if_arp.h>
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#include <linux/etherdevice.h>
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#include <linux/if_vlan.h>
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#include <linux/ctype.h>
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#include <linux/in6.h>
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#include <linux/bitops.h>
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#include <linux/seq_file.h>
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#include <linux/hashtable.h>
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#include <linux/ip.h>
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#include <linux/refcount.h>
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#include <linux/timer.h>
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#include <linux/wait.h>
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#include <linux/workqueue.h>
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#include <net/dst.h>
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#include <net/ip6_fib.h>
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#include <net/ipv6.h>
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#include <net/if_inet6.h>
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#include <net/addrconf.h>
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#include <net/sch_generic.h>
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#include <net/tcp.h>
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#include <asm/debug.h>
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#include <asm/qdio.h>
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#include <asm/ccwdev.h>
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#include <asm/ccwgroup.h>
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#include <asm/sysinfo.h>
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#include <uapi/linux/if_link.h>
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#include "qeth_core_mpc.h"
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/**
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* Debug Facility stuff
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*/
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enum qeth_dbf_names {
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QETH_DBF_SETUP,
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QETH_DBF_MSG,
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QETH_DBF_CTRL,
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QETH_DBF_INFOS /* must be last element */
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};
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struct qeth_dbf_info {
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char name[DEBUG_MAX_NAME_LEN];
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int pages;
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int areas;
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int len;
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int level;
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struct debug_view *view;
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debug_info_t *id;
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};
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#define QETH_DBF_CTRL_LEN 256U
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#define QETH_DBF_TEXT(name, level, text) \
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debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
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#define QETH_DBF_HEX(name, level, addr, len) \
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debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
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#define QETH_DBF_MESSAGE(level, text...) \
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debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
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#define QETH_DBF_TEXT_(name, level, text...) \
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qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
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#define QETH_CARD_TEXT(card, level, text) \
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debug_text_event(card->debug, level, text)
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#define QETH_CARD_HEX(card, level, addr, len) \
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debug_event(card->debug, level, (void *)(addr), len)
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#define QETH_CARD_MESSAGE(card, text...) \
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debug_sprintf_event(card->debug, level, text)
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#define QETH_CARD_TEXT_(card, level, text...) \
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qeth_dbf_longtext(card->debug, level, text)
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#define SENSE_COMMAND_REJECT_BYTE 0
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#define SENSE_COMMAND_REJECT_FLAG 0x80
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#define SENSE_RESETTING_EVENT_BYTE 1
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#define SENSE_RESETTING_EVENT_FLAG 0x80
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static inline u32 qeth_get_device_id(struct ccw_device *cdev)
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{
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struct ccw_dev_id dev_id;
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u32 id;
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ccw_device_get_id(cdev, &dev_id);
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id = dev_id.devno;
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id |= (u32) (dev_id.ssid << 16);
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return id;
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}
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/*
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* Common IO related definitions
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*/
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#define CARD_RDEV(card) card->read.ccwdev
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#define CARD_WDEV(card) card->write.ccwdev
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#define CARD_DDEV(card) card->data.ccwdev
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#define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
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#define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
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#define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
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#define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
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#define CCW_DEVID(cdev) (qeth_get_device_id(cdev))
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#define CARD_DEVID(card) (CCW_DEVID(CARD_RDEV(card)))
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/* Routing stuff */
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struct qeth_routing_info {
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enum qeth_routing_types type;
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};
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/* IPA stuff */
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struct qeth_ipa_info {
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__u32 supported_funcs;
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__u32 enabled_funcs;
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};
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/* SETBRIDGEPORT stuff */
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enum qeth_sbp_roles {
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QETH_SBP_ROLE_NONE = 0,
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QETH_SBP_ROLE_PRIMARY = 1,
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QETH_SBP_ROLE_SECONDARY = 2,
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};
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enum qeth_sbp_states {
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QETH_SBP_STATE_INACTIVE = 0,
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QETH_SBP_STATE_STANDBY = 1,
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QETH_SBP_STATE_ACTIVE = 2,
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};
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#define QETH_SBP_HOST_NOTIFICATION 1
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struct qeth_sbp_info {
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__u32 supported_funcs;
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enum qeth_sbp_roles role;
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__u32 hostnotification:1;
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__u32 reflect_promisc:1;
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__u32 reflect_promisc_primary:1;
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};
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struct qeth_vnicc_info {
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/* supported/currently configured VNICCs; updated in IPA exchanges */
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u32 sup_chars;
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u32 cur_chars;
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/* supported commands: bitmasks which VNICCs support respective cmd */
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u32 set_char_sup;
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u32 getset_timeout_sup;
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/* timeout value for the learning characteristic */
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u32 learning_timeout;
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/* characteristics wanted/configured by user */
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u32 wanted_chars;
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/* has user explicitly enabled rx_bcast while online? */
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bool rx_bcast_enabled;
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};
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static inline int qeth_is_adp_supported(struct qeth_ipa_info *ipa,
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enum qeth_ipa_setadp_cmd func)
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{
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return (ipa->supported_funcs & func);
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}
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static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
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enum qeth_ipa_funcs func)
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{
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return (ipa->supported_funcs & func);
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}
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static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
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enum qeth_ipa_funcs func)
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{
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return (ipa->supported_funcs & ipa->enabled_funcs & func);
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}
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#define qeth_adp_supported(c, f) \
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qeth_is_adp_supported(&c->options.adp, f)
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#define qeth_is_supported(c, f) \
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qeth_is_ipa_supported(&c->options.ipa4, f)
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#define qeth_is_enabled(c, f) \
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qeth_is_ipa_enabled(&c->options.ipa4, f)
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#define qeth_is_supported6(c, f) \
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qeth_is_ipa_supported(&c->options.ipa6, f)
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#define qeth_is_enabled6(c, f) \
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qeth_is_ipa_enabled(&c->options.ipa6, f)
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#define qeth_is_ipafunc_supported(c, prot, f) \
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((prot == QETH_PROT_IPV6) ? \
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qeth_is_supported6(c, f) : qeth_is_supported(c, f))
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#define qeth_is_ipafunc_enabled(c, prot, f) \
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((prot == QETH_PROT_IPV6) ? \
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qeth_is_enabled6(c, f) : qeth_is_enabled(c, f))
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#define QETH_IDX_FUNC_LEVEL_OSD 0x0101
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#define QETH_IDX_FUNC_LEVEL_IQD 0x4108
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#define QETH_BUFSIZE 4096
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#define CCW_CMD_WRITE 0x01
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#define CCW_CMD_READ 0x02
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/**
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* some more defs
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*/
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#define QETH_TX_TIMEOUT 100 * HZ
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#define QETH_RCD_TIMEOUT 60 * HZ
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#define QETH_RECLAIM_WORK_TIME HZ
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#define QETH_MAX_PORTNO 15
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/*IPv6 address autoconfiguration stuff*/
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#define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
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#define UNIQUE_ID_NOT_BY_CARD 0x10000
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/*****************************************************************************/
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/* QDIO queue and buffer handling */
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/*****************************************************************************/
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#define QETH_MAX_QUEUES 4
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#define QETH_IQD_MIN_TXQ 2 /* One for ucast, one for mcast. */
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#define QETH_IQD_MCAST_TXQ 0
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#define QETH_IQD_MIN_UCAST_TXQ 1
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#define QETH_IN_BUF_SIZE_DEFAULT 65536
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#define QETH_IN_BUF_COUNT_DEFAULT 64
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#define QETH_IN_BUF_COUNT_HSDEFAULT 128
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#define QETH_IN_BUF_COUNT_MIN 8
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#define QETH_IN_BUF_COUNT_MAX 128
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#define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
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#define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
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((card)->qdio.in_buf_pool.buf_count / 2)
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/* buffers we have to be behind before we get a PCI */
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#define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
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/*enqueued free buffers left before we get a PCI*/
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#define QETH_PCI_THRESHOLD_B(card) 0
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/*not used unless the microcode gets patched*/
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#define QETH_PCI_TIMER_VALUE(card) 3
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/* priority queing */
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#define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
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#define QETH_DEFAULT_QUEUE 2
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#define QETH_NO_PRIO_QUEUEING 0
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#define QETH_PRIO_Q_ING_PREC 1
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#define QETH_PRIO_Q_ING_TOS 2
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#define QETH_PRIO_Q_ING_SKB 3
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#define QETH_PRIO_Q_ING_VLAN 4
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/* Packing */
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#define QETH_LOW_WATERMARK_PACK 2
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#define QETH_HIGH_WATERMARK_PACK 5
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#define QETH_WATERMARK_PACK_FUZZ 1
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/* large receive scatter gather copy break */
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#define QETH_RX_SG_CB (PAGE_SIZE >> 1)
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#define QETH_RX_PULL_LEN 256
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struct qeth_hdr_layer3 {
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__u8 id;
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__u8 flags;
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__u16 inbound_checksum; /*TSO:__u16 seqno */
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__u32 token; /*TSO: __u32 reserved */
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__u16 length;
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__u8 vlan_prio;
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__u8 ext_flags;
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__u16 vlan_id;
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__u16 frame_offset;
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union {
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/* TX: */
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struct in6_addr ipv6_addr;
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struct ipv4 {
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u8 res[12];
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u32 addr;
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} ipv4;
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/* RX: */
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struct rx {
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u8 res1[2];
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u8 src_mac[6];
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u8 res2[4];
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u16 vlan_id;
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u8 res3[2];
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} rx;
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} next_hop;
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};
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struct qeth_hdr_layer2 {
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__u8 id;
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__u8 flags[3];
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__u8 port_no;
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__u8 hdr_length;
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__u16 pkt_length;
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__u16 seq_no;
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__u16 vlan_id;
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__u32 reserved;
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__u8 reserved2[16];
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} __attribute__ ((packed));
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struct qeth_hdr_osn {
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__u8 id;
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__u8 reserved;
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__u16 seq_no;
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__u16 reserved2;
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__u16 control_flags;
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__u16 pdu_length;
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__u8 reserved3[18];
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__u32 ccid;
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} __attribute__ ((packed));
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struct qeth_hdr {
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union {
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struct qeth_hdr_layer2 l2;
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struct qeth_hdr_layer3 l3;
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struct qeth_hdr_osn osn;
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} hdr;
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} __attribute__ ((packed));
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/*TCP Segmentation Offload header*/
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struct qeth_hdr_ext_tso {
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__u16 hdr_tot_len;
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__u8 imb_hdr_no;
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__u8 reserved;
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__u8 hdr_type;
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__u8 hdr_version;
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__u16 hdr_len;
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__u32 payload_len;
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__u16 mss;
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__u16 dg_hdr_len;
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__u8 padding[16];
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} __attribute__ ((packed));
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struct qeth_hdr_tso {
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struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
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struct qeth_hdr_ext_tso ext;
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} __attribute__ ((packed));
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/* flags for qeth_hdr.flags */
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#define QETH_HDR_PASSTHRU 0x10
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#define QETH_HDR_IPV6 0x80
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#define QETH_HDR_CAST_MASK 0x07
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enum qeth_cast_flags {
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QETH_CAST_UNICAST = 0x06,
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QETH_CAST_MULTICAST = 0x04,
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QETH_CAST_BROADCAST = 0x05,
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QETH_CAST_ANYCAST = 0x07,
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QETH_CAST_NOCAST = 0x00,
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};
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enum qeth_layer2_frame_flags {
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QETH_LAYER2_FLAG_MULTICAST = 0x01,
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QETH_LAYER2_FLAG_BROADCAST = 0x02,
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QETH_LAYER2_FLAG_UNICAST = 0x04,
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QETH_LAYER2_FLAG_VLAN = 0x10,
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};
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enum qeth_header_ids {
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QETH_HEADER_TYPE_LAYER3 = 0x01,
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QETH_HEADER_TYPE_LAYER2 = 0x02,
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QETH_HEADER_TYPE_L3_TSO = 0x03,
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QETH_HEADER_TYPE_OSN = 0x04,
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QETH_HEADER_TYPE_L2_TSO = 0x06,
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};
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/* flags for qeth_hdr.ext_flags */
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#define QETH_HDR_EXT_VLAN_FRAME 0x01
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#define QETH_HDR_EXT_TOKEN_ID 0x02
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#define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
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#define QETH_HDR_EXT_SRC_MAC_ADDR 0x08
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#define QETH_HDR_EXT_CSUM_HDR_REQ 0x10
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#define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20
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#define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/
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static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1,
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struct qeth_hdr_layer2 *h2)
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{
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return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) &&
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h1->vlan_id == h2->vlan_id;
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}
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static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1,
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struct qeth_hdr_layer3 *h2)
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{
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return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) &&
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h1->vlan_id == h2->vlan_id;
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}
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static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1,
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struct qeth_hdr_layer3 *h2)
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{
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return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) &&
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ipv6_addr_equal(&h1->next_hop.ipv6_addr,
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&h2->next_hop.ipv6_addr);
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}
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enum qeth_qdio_info_states {
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QETH_QDIO_UNINITIALIZED,
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QETH_QDIO_ALLOCATED,
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QETH_QDIO_ESTABLISHED,
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QETH_QDIO_CLEANING
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};
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struct qeth_buffer_pool_entry {
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struct list_head list;
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struct list_head init_list;
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void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
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};
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struct qeth_qdio_buffer_pool {
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struct list_head entry_list;
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int buf_count;
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};
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struct qeth_qdio_buffer {
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struct qdio_buffer *buffer;
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/* the buffer pool entry currently associated to this buffer */
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struct qeth_buffer_pool_entry *pool_entry;
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struct sk_buff *rx_skb;
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};
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struct qeth_qdio_q {
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struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
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struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
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int next_buf_to_init;
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};
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enum qeth_qdio_out_buffer_state {
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/* Owned by driver, in order to be filled. */
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QETH_QDIO_BUF_EMPTY,
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/* Filled by driver; owned by hardware in order to be sent. */
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QETH_QDIO_BUF_PRIMED,
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/* Identified to be pending in TPQ. */
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QETH_QDIO_BUF_PENDING,
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/* Found in completion queue. */
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QETH_QDIO_BUF_IN_CQ,
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/* Handled via transfer pending / completion queue. */
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QETH_QDIO_BUF_HANDLED_DELAYED,
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};
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struct qeth_qdio_out_buffer {
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struct qdio_buffer *buffer;
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atomic_t state;
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int next_element_to_fill;
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unsigned int bytes;
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struct sk_buff_head skb_list;
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int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
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struct qeth_qdio_out_q *q;
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struct qeth_qdio_out_buffer *next_pending;
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};
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struct qeth_card;
|
|
|
|
enum qeth_out_q_states {
|
|
QETH_OUT_Q_UNLOCKED,
|
|
QETH_OUT_Q_LOCKED,
|
|
QETH_OUT_Q_LOCKED_FLUSH,
|
|
};
|
|
|
|
#define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val))
|
|
#define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1)
|
|
|
|
#define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val))
|
|
#define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1)
|
|
|
|
struct qeth_card_stats {
|
|
u64 rx_bufs;
|
|
u64 rx_skb_csum;
|
|
u64 rx_sg_skbs;
|
|
u64 rx_sg_frags;
|
|
u64 rx_sg_alloc_page;
|
|
|
|
/* rtnl_link_stats64 */
|
|
u64 rx_packets;
|
|
u64 rx_bytes;
|
|
u64 rx_errors;
|
|
u64 rx_dropped;
|
|
u64 rx_multicast;
|
|
};
|
|
|
|
struct qeth_out_q_stats {
|
|
u64 bufs;
|
|
u64 bufs_pack;
|
|
u64 buf_elements;
|
|
u64 skbs_pack;
|
|
u64 skbs_sg;
|
|
u64 skbs_csum;
|
|
u64 skbs_tso;
|
|
u64 skbs_linearized;
|
|
u64 skbs_linearized_fail;
|
|
u64 tso_bytes;
|
|
u64 packing_mode_switch;
|
|
u64 stopped;
|
|
u64 completion_yield;
|
|
u64 completion_timer;
|
|
|
|
/* rtnl_link_stats64 */
|
|
u64 tx_packets;
|
|
u64 tx_bytes;
|
|
u64 tx_errors;
|
|
u64 tx_dropped;
|
|
};
|
|
|
|
#define QETH_TX_TIMER_USECS 500
|
|
|
|
struct qeth_qdio_out_q {
|
|
struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
|
|
struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
|
|
struct qdio_outbuf_state *bufstates; /* convenience pointer */
|
|
struct qeth_out_q_stats stats;
|
|
u8 next_buf_to_fill;
|
|
u8 max_elements;
|
|
u8 queue_no;
|
|
u8 do_pack;
|
|
struct qeth_card *card;
|
|
atomic_t state;
|
|
/*
|
|
* number of buffers that are currently filled (PRIMED)
|
|
* -> these buffers are hardware-owned
|
|
*/
|
|
atomic_t used_buffers;
|
|
/* indicates whether PCI flag must be set (or if one is outstanding) */
|
|
atomic_t set_pci_flags_count;
|
|
struct napi_struct napi;
|
|
struct timer_list timer;
|
|
struct qeth_hdr *prev_hdr;
|
|
u8 bulk_start;
|
|
};
|
|
|
|
#define qeth_for_each_output_queue(card, q, i) \
|
|
for (i = 0; i < card->qdio.no_out_queues && \
|
|
(q = card->qdio.out_qs[i]); i++)
|
|
|
|
#define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi)
|
|
|
|
static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue)
|
|
{
|
|
if (timer_pending(&queue->timer))
|
|
return;
|
|
mod_timer(&queue->timer, usecs_to_jiffies(QETH_TX_TIMER_USECS) +
|
|
jiffies);
|
|
}
|
|
|
|
static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue)
|
|
{
|
|
return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q;
|
|
}
|
|
|
|
static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue)
|
|
{
|
|
return atomic_read(&queue->used_buffers) == 0;
|
|
}
|
|
|
|
struct qeth_qdio_info {
|
|
atomic_t state;
|
|
/* input */
|
|
int no_in_queues;
|
|
struct qeth_qdio_q *in_q;
|
|
struct qeth_qdio_q *c_q;
|
|
struct qeth_qdio_buffer_pool in_buf_pool;
|
|
struct qeth_qdio_buffer_pool init_pool;
|
|
int in_buf_size;
|
|
|
|
/* output */
|
|
int no_out_queues;
|
|
struct qeth_qdio_out_q *out_qs[QETH_MAX_QUEUES];
|
|
struct qdio_outbuf_state *out_bufstates;
|
|
|
|
/* priority queueing */
|
|
int do_prio_queueing;
|
|
int default_out_queue;
|
|
};
|
|
|
|
/**
|
|
* channel state machine
|
|
*/
|
|
enum qeth_channel_states {
|
|
CH_STATE_UP,
|
|
CH_STATE_DOWN,
|
|
CH_STATE_HALTED,
|
|
CH_STATE_STOPPED,
|
|
};
|
|
/**
|
|
* card state machine
|
|
*/
|
|
enum qeth_card_states {
|
|
CARD_STATE_DOWN,
|
|
CARD_STATE_HARDSETUP,
|
|
CARD_STATE_SOFTSETUP,
|
|
};
|
|
|
|
/**
|
|
* Protocol versions
|
|
*/
|
|
enum qeth_prot_versions {
|
|
QETH_PROT_NONE = 0x0000,
|
|
QETH_PROT_IPV4 = 0x0004,
|
|
QETH_PROT_IPV6 = 0x0006,
|
|
};
|
|
|
|
enum qeth_cq {
|
|
QETH_CQ_DISABLED = 0,
|
|
QETH_CQ_ENABLED = 1,
|
|
QETH_CQ_NOTAVAILABLE = 2,
|
|
};
|
|
|
|
struct qeth_ipato {
|
|
bool enabled;
|
|
bool invert4;
|
|
bool invert6;
|
|
struct list_head entries;
|
|
};
|
|
|
|
struct qeth_channel {
|
|
struct ccw_device *ccwdev;
|
|
enum qeth_channel_states state;
|
|
atomic_t irq_pending;
|
|
};
|
|
|
|
struct qeth_reply {
|
|
int (*callback)(struct qeth_card *card, struct qeth_reply *reply,
|
|
unsigned long data);
|
|
void *param;
|
|
};
|
|
|
|
struct qeth_cmd_buffer {
|
|
struct list_head list;
|
|
struct completion done;
|
|
spinlock_t lock;
|
|
unsigned int length;
|
|
refcount_t ref_count;
|
|
struct qeth_channel *channel;
|
|
struct qeth_reply reply;
|
|
long timeout;
|
|
unsigned char *data;
|
|
void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob);
|
|
void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob,
|
|
unsigned int data_length);
|
|
int rc;
|
|
};
|
|
|
|
static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob)
|
|
{
|
|
refcount_inc(&iob->ref_count);
|
|
}
|
|
|
|
static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
|
|
{
|
|
return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
|
|
}
|
|
|
|
static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob)
|
|
{
|
|
return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8));
|
|
}
|
|
|
|
static inline bool qeth_trylock_channel(struct qeth_channel *channel)
|
|
{
|
|
return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0;
|
|
}
|
|
|
|
/**
|
|
* OSA card related definitions
|
|
*/
|
|
struct qeth_token {
|
|
__u32 issuer_rm_w;
|
|
__u32 issuer_rm_r;
|
|
__u32 cm_filter_w;
|
|
__u32 cm_filter_r;
|
|
__u32 cm_connection_w;
|
|
__u32 cm_connection_r;
|
|
__u32 ulp_filter_w;
|
|
__u32 ulp_filter_r;
|
|
__u32 ulp_connection_w;
|
|
__u32 ulp_connection_r;
|
|
};
|
|
|
|
struct qeth_seqno {
|
|
__u32 trans_hdr;
|
|
__u32 pdu_hdr;
|
|
__u32 pdu_hdr_ack;
|
|
__u16 ipa;
|
|
};
|
|
|
|
struct qeth_card_blkt {
|
|
int time_total;
|
|
int inter_packet;
|
|
int inter_packet_jumbo;
|
|
};
|
|
|
|
#define QETH_BROADCAST_WITH_ECHO 0x01
|
|
#define QETH_BROADCAST_WITHOUT_ECHO 0x02
|
|
#define QETH_LAYER2_MAC_REGISTERED 0x02
|
|
struct qeth_card_info {
|
|
unsigned short unit_addr2;
|
|
unsigned short cula;
|
|
u8 chpid;
|
|
__u16 func_level;
|
|
char mcl_level[QETH_MCL_LENGTH + 1];
|
|
u8 open_when_online:1;
|
|
u8 promisc_mode:1;
|
|
u8 use_v1_blkt:1;
|
|
u8 is_vm_nic:1;
|
|
int mac_bits;
|
|
enum qeth_card_types type;
|
|
enum qeth_link_types link_type;
|
|
int broadcast_capable;
|
|
int unique_id;
|
|
bool layer_enforced;
|
|
struct qeth_card_blkt blkt;
|
|
__u32 diagass_support;
|
|
__u32 hwtrap;
|
|
};
|
|
|
|
enum qeth_discipline_id {
|
|
QETH_DISCIPLINE_UNDETERMINED = -1,
|
|
QETH_DISCIPLINE_LAYER3 = 0,
|
|
QETH_DISCIPLINE_LAYER2 = 1,
|
|
};
|
|
|
|
struct qeth_card_options {
|
|
struct qeth_routing_info route4;
|
|
struct qeth_ipa_info ipa4;
|
|
struct qeth_ipa_info adp; /*Adapter parameters*/
|
|
struct qeth_routing_info route6;
|
|
struct qeth_ipa_info ipa6;
|
|
struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
|
|
struct qeth_vnicc_info vnicc; /* VNICC options */
|
|
int fake_broadcast;
|
|
enum qeth_discipline_id layer;
|
|
int rx_sg_cb;
|
|
enum qeth_ipa_isolation_modes isolation;
|
|
enum qeth_ipa_isolation_modes prev_isolation;
|
|
int sniffer;
|
|
enum qeth_cq cq;
|
|
char hsuid[9];
|
|
};
|
|
|
|
#define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2)
|
|
#define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3)
|
|
|
|
/*
|
|
* thread bits for qeth_card thread masks
|
|
*/
|
|
enum qeth_threads {
|
|
QETH_RECOVER_THREAD = 1,
|
|
};
|
|
|
|
struct qeth_osn_info {
|
|
int (*assist_cb)(struct net_device *dev, void *data);
|
|
int (*data_cb)(struct sk_buff *skb);
|
|
};
|
|
|
|
struct qeth_discipline {
|
|
const struct device_type *devtype;
|
|
int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done);
|
|
int (*recover)(void *ptr);
|
|
int (*setup) (struct ccwgroup_device *);
|
|
void (*remove) (struct ccwgroup_device *);
|
|
int (*set_online) (struct ccwgroup_device *);
|
|
int (*set_offline) (struct ccwgroup_device *);
|
|
int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd);
|
|
int (*control_event_handler)(struct qeth_card *card,
|
|
struct qeth_ipa_cmd *cmd);
|
|
};
|
|
|
|
enum qeth_addr_disposition {
|
|
QETH_DISP_ADDR_DELETE = 0,
|
|
QETH_DISP_ADDR_DO_NOTHING = 1,
|
|
QETH_DISP_ADDR_ADD = 2,
|
|
};
|
|
|
|
struct qeth_rx {
|
|
int b_count;
|
|
int b_index;
|
|
struct qdio_buffer_element *b_element;
|
|
int e_offset;
|
|
int qdio_err;
|
|
};
|
|
|
|
struct carrier_info {
|
|
__u8 card_type;
|
|
__u16 port_mode;
|
|
__u32 port_speed;
|
|
};
|
|
|
|
struct qeth_switch_info {
|
|
__u32 capabilities;
|
|
__u32 settings;
|
|
};
|
|
|
|
#define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
|
|
|
|
struct qeth_card {
|
|
enum qeth_card_states state;
|
|
spinlock_t lock;
|
|
struct ccwgroup_device *gdev;
|
|
struct qeth_cmd_buffer *read_cmd;
|
|
struct qeth_channel read;
|
|
struct qeth_channel write;
|
|
struct qeth_channel data;
|
|
|
|
struct net_device *dev;
|
|
struct qeth_card_stats stats;
|
|
struct qeth_card_info info;
|
|
struct qeth_token token;
|
|
struct qeth_seqno seqno;
|
|
struct qeth_card_options options;
|
|
|
|
struct workqueue_struct *event_wq;
|
|
struct workqueue_struct *cmd_wq;
|
|
wait_queue_head_t wait_q;
|
|
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
|
|
DECLARE_HASHTABLE(mac_htable, 4);
|
|
DECLARE_HASHTABLE(ip_htable, 4);
|
|
struct mutex ip_lock;
|
|
DECLARE_HASHTABLE(ip_mc_htable, 4);
|
|
struct work_struct rx_mode_work;
|
|
struct work_struct kernel_thread_starter;
|
|
spinlock_t thread_mask_lock;
|
|
unsigned long thread_start_mask;
|
|
unsigned long thread_allowed_mask;
|
|
unsigned long thread_running_mask;
|
|
struct qeth_ipato ipato;
|
|
struct list_head cmd_waiter_list;
|
|
/* QDIO buffer handling */
|
|
struct qeth_qdio_info qdio;
|
|
int read_or_write_problem;
|
|
struct qeth_osn_info osn_info;
|
|
struct qeth_discipline *discipline;
|
|
atomic_t force_alloc_skb;
|
|
struct service_level qeth_service_level;
|
|
struct qdio_ssqd_desc ssqd;
|
|
debug_info_t *debug;
|
|
struct mutex conf_mutex;
|
|
struct mutex discipline_mutex;
|
|
struct napi_struct napi;
|
|
struct qeth_rx rx;
|
|
struct delayed_work buffer_reclaim_work;
|
|
int reclaim_index;
|
|
struct work_struct close_dev_work;
|
|
};
|
|
|
|
static inline bool qeth_card_hw_is_reachable(struct qeth_card *card)
|
|
{
|
|
return card->state == CARD_STATE_SOFTSETUP;
|
|
}
|
|
|
|
struct qeth_trap_id {
|
|
__u16 lparnr;
|
|
char vmname[8];
|
|
__u8 chpid;
|
|
__u8 ssid;
|
|
__u16 devno;
|
|
} __packed;
|
|
|
|
/*some helper functions*/
|
|
#define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
|
|
|
|
static inline bool qeth_netdev_is_registered(struct net_device *dev)
|
|
{
|
|
return dev->netdev_ops != NULL;
|
|
}
|
|
|
|
static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq)
|
|
{
|
|
if (txq == QETH_IQD_MCAST_TXQ)
|
|
return dev->num_tx_queues - 1;
|
|
if (txq == dev->num_tx_queues - 1)
|
|
return QETH_IQD_MCAST_TXQ;
|
|
return txq;
|
|
}
|
|
|
|
static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf,
|
|
unsigned int elements)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < elements; i++)
|
|
memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element));
|
|
buf->element[14].sflags = 0;
|
|
buf->element[15].sflags = 0;
|
|
}
|
|
|
|
/**
|
|
* qeth_get_elements_for_range() - find number of SBALEs to cover range.
|
|
* @start: Start of the address range.
|
|
* @end: Address after the end of the range.
|
|
*
|
|
* Returns the number of pages, and thus QDIO buffer elements, needed to cover
|
|
* the specified address range.
|
|
*/
|
|
static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
|
|
{
|
|
return PFN_UP(end) - PFN_DOWN(start);
|
|
}
|
|
|
|
static inline int qeth_get_ip_version(struct sk_buff *skb)
|
|
{
|
|
struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
|
|
__be16 prot = veth->h_vlan_proto;
|
|
|
|
if (prot == htons(ETH_P_8021Q))
|
|
prot = veth->h_vlan_encapsulated_proto;
|
|
|
|
switch (prot) {
|
|
case htons(ETH_P_IPV6):
|
|
return 6;
|
|
case htons(ETH_P_IP):
|
|
return 4;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static inline int qeth_get_ether_cast_type(struct sk_buff *skb)
|
|
{
|
|
u8 *addr = eth_hdr(skb)->h_dest;
|
|
|
|
if (is_multicast_ether_addr(addr))
|
|
return is_broadcast_ether_addr(addr) ? RTN_BROADCAST :
|
|
RTN_MULTICAST;
|
|
return RTN_UNICAST;
|
|
}
|
|
|
|
static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv)
|
|
{
|
|
struct dst_entry *dst = skb_dst(skb);
|
|
struct rt6_info *rt;
|
|
|
|
rt = (struct rt6_info *) dst;
|
|
if (dst)
|
|
dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0);
|
|
return dst;
|
|
}
|
|
|
|
static inline void qeth_rx_csum(struct qeth_card *card, struct sk_buff *skb,
|
|
u8 flags)
|
|
{
|
|
if ((card->dev->features & NETIF_F_RXCSUM) &&
|
|
(flags & QETH_HDR_EXT_CSUM_TRANSP_REQ)) {
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
QETH_CARD_STAT_INC(card, rx_skb_csum);
|
|
} else {
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
}
|
|
}
|
|
|
|
static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv)
|
|
{
|
|
*flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
|
|
if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) ||
|
|
(ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP))
|
|
*flags |= QETH_HDR_EXT_UDP;
|
|
}
|
|
|
|
static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
|
|
struct qeth_buffer_pool_entry *entry)
|
|
{
|
|
list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
|
|
}
|
|
|
|
static inline int qeth_is_diagass_supported(struct qeth_card *card,
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enum qeth_diags_cmds cmd)
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{
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return card->info.diagass_support & (__u32)cmd;
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}
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int qeth_send_simple_setassparms_prot(struct qeth_card *card,
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enum qeth_ipa_funcs ipa_func,
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u16 cmd_code, u32 *data,
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enum qeth_prot_versions prot);
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/* IPv4 variant */
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static inline int qeth_send_simple_setassparms(struct qeth_card *card,
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enum qeth_ipa_funcs ipa_func,
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u16 cmd_code, u32 *data)
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{
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return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
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data, QETH_PROT_IPV4);
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}
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static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
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enum qeth_ipa_funcs ipa_func,
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u16 cmd_code, u32 *data)
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{
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return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
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data, QETH_PROT_IPV6);
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}
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int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb);
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extern struct qeth_discipline qeth_l2_discipline;
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extern struct qeth_discipline qeth_l3_discipline;
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extern const struct ethtool_ops qeth_ethtool_ops;
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extern const struct ethtool_ops qeth_osn_ethtool_ops;
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extern const struct attribute_group *qeth_generic_attr_groups[];
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extern const struct attribute_group *qeth_osn_attr_groups[];
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extern const struct attribute_group qeth_device_attr_group;
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extern const struct attribute_group qeth_device_blkt_group;
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extern const struct device_type qeth_generic_devtype;
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const char *qeth_get_cardname_short(struct qeth_card *);
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int qeth_realloc_buffer_pool(struct qeth_card *, int);
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int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
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void qeth_core_free_discipline(struct qeth_card *);
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|
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/* exports for qeth discipline device drivers */
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extern struct kmem_cache *qeth_core_header_cache;
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extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
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struct net_device *qeth_clone_netdev(struct net_device *orig);
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struct qeth_card *qeth_get_card_by_busid(char *bus_id);
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void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
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int qeth_threads_running(struct qeth_card *, unsigned long);
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int qeth_do_run_thread(struct qeth_card *, unsigned long);
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void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
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void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
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int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok);
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void qeth_print_status_message(struct qeth_card *);
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int qeth_init_qdio_queues(struct qeth_card *);
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int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
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int (*reply_cb)
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(struct qeth_card *, struct qeth_reply *, unsigned long),
|
|
void *);
|
|
struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
|
|
enum qeth_ipa_cmds cmd_code,
|
|
enum qeth_prot_versions prot,
|
|
unsigned int data_length);
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struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
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|
unsigned int length, unsigned int ccws,
|
|
long timeout);
|
|
struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
|
|
enum qeth_ipa_funcs ipa_func,
|
|
u16 cmd_code,
|
|
unsigned int data_length,
|
|
enum qeth_prot_versions prot);
|
|
struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
|
|
enum qeth_diags_cmds sub_cmd,
|
|
unsigned int data_length);
|
|
void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason);
|
|
void qeth_put_cmd(struct qeth_cmd_buffer *iob);
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|
|
|
struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
|
|
struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
|
|
struct qeth_hdr **);
|
|
void qeth_schedule_recovery(struct qeth_card *);
|
|
int qeth_poll(struct napi_struct *napi, int budget);
|
|
void qeth_clear_ipacmd_list(struct qeth_card *);
|
|
int qeth_qdio_clear_card(struct qeth_card *, int);
|
|
void qeth_clear_working_pool_list(struct qeth_card *);
|
|
void qeth_drain_output_queues(struct qeth_card *card);
|
|
void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable);
|
|
int qeth_setadpparms_change_macaddr(struct qeth_card *);
|
|
void qeth_tx_timeout(struct net_device *);
|
|
void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
|
|
u16 cmd_length);
|
|
int qeth_query_switch_attributes(struct qeth_card *card,
|
|
struct qeth_switch_info *sw_info);
|
|
int qeth_query_card_info(struct qeth_card *card,
|
|
struct carrier_info *carrier_info);
|
|
unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset);
|
|
int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
|
|
struct sk_buff *skb, struct qeth_hdr *hdr,
|
|
unsigned int offset, unsigned int hd_len,
|
|
int elements_needed);
|
|
int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
|
|
void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
|
|
int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
|
|
int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
|
|
int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
|
|
void qeth_trace_features(struct qeth_card *);
|
|
int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
|
|
int qeth_set_features(struct net_device *, netdev_features_t);
|
|
void qeth_enable_hw_features(struct net_device *dev);
|
|
netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
|
|
netdev_features_t qeth_features_check(struct sk_buff *skb,
|
|
struct net_device *dev,
|
|
netdev_features_t features);
|
|
void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats);
|
|
u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
|
|
u8 cast_type, struct net_device *sb_dev);
|
|
int qeth_open(struct net_device *dev);
|
|
int qeth_stop(struct net_device *dev);
|
|
|
|
int qeth_vm_request_mac(struct qeth_card *card);
|
|
int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
|
|
struct qeth_qdio_out_q *queue, int ipv,
|
|
void (*fill_header)(struct qeth_qdio_out_q *queue,
|
|
struct qeth_hdr *hdr, struct sk_buff *skb,
|
|
int ipv, unsigned int data_len));
|
|
|
|
/* exports for OSN */
|
|
int qeth_osn_assist(struct net_device *, void *, int);
|
|
int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
|
|
int (*assist_cb)(struct net_device *, void *),
|
|
int (*data_cb)(struct sk_buff *));
|
|
void qeth_osn_deregister(struct net_device *);
|
|
|
|
#endif /* __QETH_CORE_H__ */
|