1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright IBM Corp. 2007
4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
10 #ifndef __QETH_CORE_H__
11 #define __QETH_CORE_H__
13 #include <linux/completion.h>
14 #include <linux/debugfs.h>
16 #include <linux/if_arp.h>
17 #include <linux/etherdevice.h>
18 #include <linux/if_vlan.h>
19 #include <linux/ctype.h>
20 #include <linux/in6.h>
21 #include <linux/bitops.h>
22 #include <linux/seq_file.h>
23 #include <linux/hashtable.h>
25 #include <linux/rcupdate.h>
26 #include <linux/refcount.h>
27 #include <linux/timer.h>
28 #include <linux/types.h>
29 #include <linux/wait.h>
30 #include <linux/workqueue.h>
33 #include <net/ip6_fib.h>
35 #include <net/if_inet6.h>
36 #include <net/addrconf.h>
37 #include <net/route.h>
38 #include <net/sch_generic.h>
41 #include <asm/debug.h>
43 #include <asm/ccwdev.h>
44 #include <asm/ccwgroup.h>
45 #include <asm/sysinfo.h>
47 #include <uapi/linux/if_link.h>
49 #include "qeth_core_mpc.h"
52 * Debug Facility stuff
58 QETH_DBF_INFOS /* must be last element */
61 struct qeth_dbf_info {
62 char name[DEBUG_MAX_NAME_LEN];
67 struct debug_view *view;
71 #define QETH_DBF_CTRL_LEN 256U
73 #define QETH_DBF_TEXT(name, level, text) \
74 debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
76 #define QETH_DBF_HEX(name, level, addr, len) \
77 debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
79 #define QETH_DBF_MESSAGE(level, text...) \
80 debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
82 #define QETH_DBF_TEXT_(name, level, text...) \
83 qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
85 #define QETH_CARD_TEXT(card, level, text) \
86 debug_text_event(card->debug, level, text)
88 #define QETH_CARD_HEX(card, level, addr, len) \
89 debug_event(card->debug, level, (void *)(addr), len)
91 #define QETH_CARD_MESSAGE(card, text...) \
92 debug_sprintf_event(card->debug, level, text)
94 #define QETH_CARD_TEXT_(card, level, text...) \
95 qeth_dbf_longtext(card->debug, level, text)
97 #define SENSE_COMMAND_REJECT_BYTE 0
98 #define SENSE_COMMAND_REJECT_FLAG 0x80
99 #define SENSE_RESETTING_EVENT_BYTE 1
100 #define SENSE_RESETTING_EVENT_FLAG 0x80
102 static inline u32 qeth_get_device_id(struct ccw_device *cdev)
104 struct ccw_dev_id dev_id;
107 ccw_device_get_id(cdev, &dev_id);
109 id |= (u32) (dev_id.ssid << 16);
115 * Common IO related definitions
117 #define CARD_RDEV(card) card->read.ccwdev
118 #define CARD_WDEV(card) card->write.ccwdev
119 #define CARD_DDEV(card) card->data.ccwdev
120 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
121 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
122 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
123 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
124 #define CCW_DEVID(cdev) (qeth_get_device_id(cdev))
125 #define CARD_DEVID(card) (CCW_DEVID(CARD_RDEV(card)))
128 struct qeth_routing_info {
129 enum qeth_routing_types type;
132 /* SETBRIDGEPORT stuff */
133 enum qeth_sbp_roles {
134 QETH_SBP_ROLE_NONE = 0,
135 QETH_SBP_ROLE_PRIMARY = 1,
136 QETH_SBP_ROLE_SECONDARY = 2,
139 enum qeth_sbp_states {
140 QETH_SBP_STATE_INACTIVE = 0,
141 QETH_SBP_STATE_STANDBY = 1,
142 QETH_SBP_STATE_ACTIVE = 2,
145 #define QETH_SBP_HOST_NOTIFICATION 1
147 struct qeth_sbp_info {
148 __u32 supported_funcs;
149 enum qeth_sbp_roles role;
150 __u32 hostnotification:1;
151 __u32 reflect_promisc:1;
152 __u32 reflect_promisc_primary:1;
155 struct qeth_vnicc_info {
156 /* supported/currently configured VNICCs; updated in IPA exchanges */
159 /* supported commands: bitmasks which VNICCs support respective cmd */
161 u32 getset_timeout_sup;
162 /* timeout value for the learning characteristic */
163 u32 learning_timeout;
164 /* characteristics wanted/configured by user */
166 /* has user explicitly enabled rx_bcast while online? */
167 bool rx_bcast_enabled;
170 #define QETH_IDX_FUNC_LEVEL_OSD 0x0101
171 #define QETH_IDX_FUNC_LEVEL_IQD 0x4108
173 #define QETH_BUFSIZE 4096
174 #define CCW_CMD_WRITE 0x01
175 #define CCW_CMD_READ 0x02
180 #define QETH_TX_TIMEOUT (100 * HZ)
181 #define QETH_RCD_TIMEOUT (60 * HZ)
182 #define QETH_RECLAIM_WORK_TIME HZ
183 #define QETH_MAX_PORTNO 15
185 /*****************************************************************************/
186 /* QDIO queue and buffer handling */
187 /*****************************************************************************/
188 #define QETH_MAX_OUT_QUEUES 4
189 #define QETH_IQD_MIN_TXQ 2 /* One for ucast, one for mcast. */
190 #define QETH_IQD_MCAST_TXQ 0
191 #define QETH_IQD_MIN_UCAST_TXQ 1
193 #define QETH_MAX_IN_QUEUES 2
194 #define QETH_RX_COPYBREAK (PAGE_SIZE >> 1)
195 #define QETH_IN_BUF_SIZE_DEFAULT 65536
196 #define QETH_IN_BUF_COUNT_DEFAULT 64
197 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
198 #define QETH_IN_BUF_COUNT_MIN 8U
199 #define QETH_IN_BUF_COUNT_MAX 128U
200 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
201 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
202 ((card)->qdio.in_buf_pool.buf_count / 2)
204 /* buffers we have to be behind before we get a PCI */
205 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
206 /*enqueued free buffers left before we get a PCI*/
207 #define QETH_PCI_THRESHOLD_B(card) 0
208 /*not used unless the microcode gets patched*/
209 #define QETH_PCI_TIMER_VALUE(card) 3
211 /* priority queing */
212 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
213 #define QETH_DEFAULT_QUEUE 2
214 #define QETH_NO_PRIO_QUEUEING 0
215 #define QETH_PRIO_Q_ING_PREC 1
216 #define QETH_PRIO_Q_ING_TOS 2
217 #define QETH_PRIO_Q_ING_SKB 3
218 #define QETH_PRIO_Q_ING_VLAN 4
219 #define QETH_PRIO_Q_ING_FIXED 5
222 #define QETH_LOW_WATERMARK_PACK 2
223 #define QETH_HIGH_WATERMARK_PACK 5
224 #define QETH_WATERMARK_PACK_FUZZ 1
226 struct qeth_hdr_layer3 {
229 __u16 inbound_checksum; /*TSO:__u16 seqno */
230 __u32 token; /*TSO: __u32 reserved */
238 struct in6_addr addr;
250 struct qeth_hdr_layer2 {
260 } __attribute__ ((packed));
262 struct qeth_hdr_osn {
271 } __attribute__ ((packed));
275 struct qeth_hdr_layer2 l2;
276 struct qeth_hdr_layer3 l3;
277 struct qeth_hdr_osn osn;
279 } __attribute__ ((packed));
281 #define QETH_QIB_PQUE_ORDER_RR 0
282 #define QETH_QIB_PQUE_UNITS_SBAL 2
283 #define QETH_QIB_PQUE_PRIO_DEFAULT 4
285 struct qeth_qib_parms {
292 u32 blkt_inter_packet;
293 u32 blkt_inter_packet_jumbo;
298 u32 pque_priority[4];
301 /*TCP Segmentation Offload header*/
302 struct qeth_hdr_ext_tso {
313 } __attribute__ ((packed));
315 struct qeth_hdr_tso {
316 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
317 struct qeth_hdr_ext_tso ext;
318 } __attribute__ ((packed));
321 /* flags for qeth_hdr.flags */
322 #define QETH_HDR_PASSTHRU 0x10
323 #define QETH_HDR_IPV6 0x80
324 #define QETH_HDR_CAST_MASK 0x07
325 enum qeth_cast_flags {
326 QETH_CAST_UNICAST = 0x06,
327 QETH_CAST_MULTICAST = 0x04,
328 QETH_CAST_BROADCAST = 0x05,
329 QETH_CAST_ANYCAST = 0x07,
330 QETH_CAST_NOCAST = 0x00,
333 enum qeth_layer2_frame_flags {
334 QETH_LAYER2_FLAG_MULTICAST = 0x01,
335 QETH_LAYER2_FLAG_BROADCAST = 0x02,
336 QETH_LAYER2_FLAG_UNICAST = 0x04,
337 QETH_LAYER2_FLAG_VLAN = 0x10,
340 enum qeth_header_ids {
341 QETH_HEADER_TYPE_LAYER3 = 0x01,
342 QETH_HEADER_TYPE_LAYER2 = 0x02,
343 QETH_HEADER_TYPE_L3_TSO = 0x03,
344 QETH_HEADER_TYPE_OSN = 0x04,
345 QETH_HEADER_TYPE_L2_TSO = 0x06,
346 QETH_HEADER_MASK_INVAL = 0x80,
348 /* flags for qeth_hdr.ext_flags */
349 #define QETH_HDR_EXT_VLAN_FRAME 0x01
350 #define QETH_HDR_EXT_TOKEN_ID 0x02
351 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
352 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08
353 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10
354 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20
355 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/
357 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1,
358 struct qeth_hdr_layer2 *h2)
360 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) &&
361 h1->vlan_id == h2->vlan_id;
364 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1,
365 struct qeth_hdr_layer3 *h2)
367 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) &&
368 h1->vlan_id == h2->vlan_id;
371 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1,
372 struct qeth_hdr_layer3 *h2)
374 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) &&
375 ipv6_addr_equal(&h1->next_hop.addr, &h2->next_hop.addr);
378 struct qeth_local_addr {
379 struct hlist_node hnode;
381 struct in6_addr addr;
384 enum qeth_qdio_info_states {
385 QETH_QDIO_UNINITIALIZED,
387 QETH_QDIO_ESTABLISHED,
391 struct qeth_buffer_pool_entry {
392 struct list_head list;
393 struct list_head init_list;
394 struct page *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
397 struct qeth_qdio_buffer_pool {
398 struct list_head entry_list;
402 struct qeth_qdio_buffer {
403 struct qdio_buffer *buffer;
404 /* the buffer pool entry currently associated to this buffer */
405 struct qeth_buffer_pool_entry *pool_entry;
406 struct sk_buff *rx_skb;
410 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
411 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
412 int next_buf_to_init;
415 enum qeth_qdio_out_buffer_state {
416 /* Owned by driver, in order to be filled. */
418 /* Filled by driver; owned by hardware in order to be sent. */
419 QETH_QDIO_BUF_PRIMED,
420 /* Discovered by the TX completion code: */
421 QETH_QDIO_BUF_PENDING,
422 /* Finished by the TX completion code: */
423 QETH_QDIO_BUF_NEED_QAOB,
424 /* Received QAOB notification on CQ: */
425 QETH_QDIO_BUF_QAOB_OK,
426 QETH_QDIO_BUF_QAOB_ERROR,
427 /* Handled via transfer pending / completion queue. */
428 QETH_QDIO_BUF_HANDLED_DELAYED,
431 struct qeth_qdio_out_buffer {
432 struct qdio_buffer *buffer;
434 int next_element_to_fill;
437 struct sk_buff_head skb_list;
438 int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
440 struct qeth_qdio_out_q *q;
441 struct qeth_qdio_out_buffer *next_pending;
446 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val))
447 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1)
449 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val))
450 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1)
452 struct qeth_card_stats {
457 u64 rx_sg_alloc_page;
459 u64 rx_dropped_nomem;
460 u64 rx_dropped_notsupp;
463 /* rtnl_link_stats64 */
467 u64 rx_length_errors;
472 struct qeth_out_q_stats {
481 u64 skbs_linearized_fail;
483 u64 packing_mode_switch;
487 u64 completion_yield;
488 u64 completion_timer;
490 /* rtnl_link_stats64 */
497 #define QETH_TX_MAX_COALESCED_FRAMES 1
498 #define QETH_TX_COALESCE_USECS 25
499 #define QETH_TX_TIMER_USECS 500
501 struct qeth_qdio_out_q {
502 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
503 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
504 struct qdio_outbuf_state *bufstates; /* convenience pointer */
505 struct qeth_out_q_stats stats;
507 unsigned int priority;
512 struct qeth_card *card;
514 * number of buffers that are currently filled (PRIMED)
515 * -> these buffers are hardware-owned
517 atomic_t used_buffers;
518 /* indicates whether PCI flag must be set (or if one is outstanding) */
519 atomic_t set_pci_flags_count;
520 struct napi_struct napi;
521 struct timer_list timer;
522 struct qeth_hdr *prev_hdr;
523 unsigned int coalesced_frames;
528 unsigned int coalesce_usecs;
529 unsigned int max_coalesced_frames;
532 #define qeth_for_each_output_queue(card, q, i) \
533 for (i = 0; i < card->qdio.no_out_queues && \
534 (q = card->qdio.out_qs[i]); i++)
536 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi)
538 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue,
541 timer_reduce(&queue->timer, usecs_to_jiffies(usecs) + jiffies);
544 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue)
546 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q;
549 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue)
551 return atomic_read(&queue->used_buffers) == 0;
554 struct qeth_qdio_info {
558 struct qeth_qdio_q *in_q;
559 struct qeth_qdio_q *c_q;
560 struct qeth_qdio_buffer_pool in_buf_pool;
561 struct qeth_qdio_buffer_pool init_pool;
565 unsigned int no_out_queues;
566 struct qeth_qdio_out_q *out_qs[QETH_MAX_OUT_QUEUES];
567 struct qdio_outbuf_state *out_bufstates;
569 /* priority queueing */
570 int do_prio_queueing;
571 int default_out_queue;
575 * channel state machine
577 enum qeth_channel_states {
586 enum qeth_card_states {
588 CARD_STATE_SOFTSETUP,
594 enum qeth_prot_versions {
595 QETH_PROT_NONE = 0x0000,
596 QETH_PROT_IPV4 = 0x0004,
597 QETH_PROT_IPV6 = 0x0006,
601 QETH_CQ_DISABLED = 0,
603 QETH_CQ_NOTAVAILABLE = 2,
610 struct list_head entries;
613 struct qeth_channel {
614 struct ccw_device *ccwdev;
615 struct qeth_cmd_buffer *active_cmd;
616 enum qeth_channel_states state;
617 atomic_t irq_pending;
621 int (*callback)(struct qeth_card *card, struct qeth_reply *reply,
626 struct qeth_cmd_buffer {
627 struct list_head list;
628 struct completion done;
631 refcount_t ref_count;
632 struct qeth_channel *channel;
633 struct qeth_reply reply;
636 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob);
637 bool (*match)(struct qeth_cmd_buffer *iob,
638 struct qeth_cmd_buffer *reply);
639 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob,
640 unsigned int data_length);
644 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob)
646 refcount_inc(&iob->ref_count);
649 static inline struct qeth_ipa_cmd *__ipa_reply(struct qeth_cmd_buffer *iob)
651 if (!IS_IPA(iob->data))
654 return (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
657 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
659 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
662 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob)
664 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8));
667 static inline bool qeth_trylock_channel(struct qeth_channel *channel)
669 return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0;
673 * OSA card related definitions
680 __u32 cm_connection_w;
681 __u32 cm_connection_r;
684 __u32 ulp_connection_w;
685 __u32 ulp_connection_r;
695 struct qeth_card_blkt {
698 int inter_packet_jumbo;
701 enum qeth_pnso_mode {
703 QETH_PNSO_BRIDGEPORT,
707 #define QETH_BROADCAST_WITH_ECHO 0x01
708 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
709 struct qeth_card_info {
710 unsigned short unit_addr2;
713 char mcl_level[QETH_MCL_LENGTH + 1];
714 /* doubleword below corresponds to net_if_token */
721 u8 ids_valid:1; /* cssid,iid,chid */
722 u8 dev_addr_is_registered:1;
723 u8 open_when_online:1;
727 /* no bitfield, we take a pointer on these two: */
730 enum qeth_pnso_mode pnso_mode;
731 enum qeth_card_types type;
732 enum qeth_link_types link_type;
733 int broadcast_capable;
735 struct qeth_card_blkt blkt;
736 __u32 diagass_support;
740 enum qeth_discipline_id {
741 QETH_DISCIPLINE_UNDETERMINED = -1,
742 QETH_DISCIPLINE_LAYER3 = 0,
743 QETH_DISCIPLINE_LAYER2 = 1,
746 struct qeth_card_options {
747 struct qeth_ipa_caps ipa4;
748 struct qeth_ipa_caps ipa6;
749 struct qeth_routing_info route4;
750 struct qeth_routing_info route6;
751 struct qeth_ipa_caps adp; /* Adapter parameters */
752 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
753 struct qeth_vnicc_info vnicc; /* VNICC options */
754 enum qeth_discipline_id layer;
755 enum qeth_ipa_isolation_modes isolation;
761 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2)
762 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3)
765 * thread bits for qeth_card thread masks
768 QETH_RECOVER_THREAD = 1,
771 struct qeth_osn_info {
772 int (*assist_cb)(struct net_device *dev, void *data);
773 int (*data_cb)(struct sk_buff *skb);
776 struct qeth_discipline {
777 const struct device_type *devtype;
778 int (*setup) (struct ccwgroup_device *);
779 void (*remove) (struct ccwgroup_device *);
780 int (*set_online)(struct qeth_card *card, bool carrier_ok);
781 void (*set_offline)(struct qeth_card *card);
782 int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd);
783 int (*control_event_handler)(struct qeth_card *card,
784 struct qeth_ipa_cmd *cmd);
787 enum qeth_addr_disposition {
788 QETH_DISP_ADDR_DELETE = 0,
789 QETH_DISP_ADDR_DO_NOTHING = 1,
790 QETH_DISP_ADDR_ADD = 2,
802 struct carrier_info {
808 struct qeth_switch_info {
814 unsigned int rx_copybreak;
815 unsigned int tx_wanted_queues;
816 u32 brport_hw_features;
820 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
823 enum qeth_card_states state;
825 struct ccwgroup_device *gdev;
826 struct qeth_cmd_buffer *read_cmd;
827 struct qeth_channel read;
828 struct qeth_channel write;
829 struct qeth_channel data;
831 struct net_device *dev;
832 struct dentry *debugfs;
833 struct qeth_card_stats stats;
834 struct qeth_card_info info;
835 struct qeth_token token;
836 struct qeth_seqno seqno;
837 struct qeth_card_options options;
839 struct workqueue_struct *event_wq;
840 struct workqueue_struct *cmd_wq;
841 wait_queue_head_t wait_q;
843 struct mutex ip_lock;
844 /* protected by ip_lock: */
845 DECLARE_HASHTABLE(ip_htable, 4);
846 struct qeth_ipato ipato;
848 DECLARE_HASHTABLE(local_addrs4, 4);
849 DECLARE_HASHTABLE(local_addrs6, 4);
850 spinlock_t local_addrs4_lock;
851 spinlock_t local_addrs6_lock;
852 DECLARE_HASHTABLE(rx_mode_addrs, 4);
853 struct work_struct rx_mode_work;
854 struct work_struct kernel_thread_starter;
855 spinlock_t thread_mask_lock;
856 unsigned long thread_start_mask;
857 unsigned long thread_allowed_mask;
858 unsigned long thread_running_mask;
859 struct list_head cmd_waiter_list;
860 /* QDIO buffer handling */
861 struct qeth_qdio_info qdio;
862 int read_or_write_problem;
863 struct qeth_osn_info osn_info;
864 const struct qeth_discipline *discipline;
865 atomic_t force_alloc_skb;
866 struct service_level qeth_service_level;
867 struct qdio_ssqd_desc ssqd;
869 struct mutex sbp_lock;
870 struct mutex conf_mutex;
871 struct mutex discipline_mutex;
872 struct napi_struct napi;
874 struct delayed_work buffer_reclaim_work;
875 struct work_struct close_dev_work;
878 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card)
880 return card->state == CARD_STATE_SOFTSETUP;
883 static inline void qeth_unlock_channel(struct qeth_card *card,
884 struct qeth_channel *channel)
886 atomic_set(&channel->irq_pending, 0);
887 wake_up(&card->wait_q);
890 struct qeth_trap_id {
898 static inline bool qeth_uses_tx_prio_queueing(struct qeth_card *card)
900 return card->qdio.do_prio_queueing != QETH_NO_PRIO_QUEUEING;
903 static inline unsigned int qeth_tx_actual_queues(struct qeth_card *card)
905 struct qeth_priv *priv = netdev_priv(card->dev);
907 if (qeth_uses_tx_prio_queueing(card))
908 return min(card->dev->num_tx_queues, card->qdio.no_out_queues);
910 return min(priv->tx_wanted_queues, card->qdio.no_out_queues);
913 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq)
915 if (txq == QETH_IQD_MCAST_TXQ)
916 return dev->num_tx_queues - 1;
917 if (txq == dev->num_tx_queues - 1)
918 return QETH_IQD_MCAST_TXQ;
922 static inline bool qeth_iqd_is_mcast_queue(struct qeth_card *card,
923 struct qeth_qdio_out_q *queue)
925 return qeth_iqd_translate_txq(card->dev, queue->queue_no) ==
929 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf,
930 unsigned int elements)
934 for (i = 0; i < elements; i++)
935 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element));
936 buf->element[14].sflags = 0;
937 buf->element[15].sflags = 0;
941 * qeth_get_elements_for_range() - find number of SBALEs to cover range.
942 * @start: Start of the address range.
943 * @end: Address after the end of the range.
945 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
946 * the specified address range.
948 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
950 return PFN_UP(end) - PFN_DOWN(start);
953 static inline int qeth_get_ip_version(struct sk_buff *skb)
955 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
956 __be16 prot = veth->h_vlan_proto;
958 if (prot == htons(ETH_P_8021Q))
959 prot = veth->h_vlan_encapsulated_proto;
962 case htons(ETH_P_IPV6):
964 case htons(ETH_P_IP):
971 static inline int qeth_get_ether_cast_type(struct sk_buff *skb)
973 u8 *addr = eth_hdr(skb)->h_dest;
975 if (is_multicast_ether_addr(addr))
976 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST :
981 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv)
983 struct dst_entry *dst = skb_dst(skb);
986 rt = (struct rt6_info *) dst;
988 dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0);
992 static inline __be32 qeth_next_hop_v4_rcu(struct sk_buff *skb,
993 struct dst_entry *dst)
995 struct rtable *rt = (struct rtable *) dst;
997 return (rt) ? rt_nexthop(rt, ip_hdr(skb)->daddr) : ip_hdr(skb)->daddr;
1000 static inline struct in6_addr *qeth_next_hop_v6_rcu(struct sk_buff *skb,
1001 struct dst_entry *dst)
1003 struct rt6_info *rt = (struct rt6_info *) dst;
1005 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
1006 return &rt->rt6i_gateway;
1008 return &ipv6_hdr(skb)->daddr;
1011 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv)
1013 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
1014 if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) ||
1015 (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP))
1016 *flags |= QETH_HDR_EXT_UDP;
1019 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
1020 struct qeth_buffer_pool_entry *entry)
1022 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
1025 static inline int qeth_is_diagass_supported(struct qeth_card *card,
1026 enum qeth_diags_cmds cmd)
1028 return card->info.diagass_support & (__u32)cmd;
1031 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
1032 enum qeth_ipa_funcs ipa_func,
1033 u16 cmd_code, u32 *data,
1034 enum qeth_prot_versions prot);
1036 static inline int qeth_send_simple_setassparms(struct qeth_card *card,
1037 enum qeth_ipa_funcs ipa_func,
1038 u16 cmd_code, u32 *data)
1040 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
1041 data, QETH_PROT_IPV4);
1044 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
1045 enum qeth_ipa_funcs ipa_func,
1046 u16 cmd_code, u32 *data)
1048 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
1049 data, QETH_PROT_IPV6);
1052 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb);
1054 extern const struct qeth_discipline qeth_l2_discipline;
1055 extern const struct qeth_discipline qeth_l3_discipline;
1056 extern const struct ethtool_ops qeth_ethtool_ops;
1057 extern const struct ethtool_ops qeth_osn_ethtool_ops;
1058 extern const struct attribute_group *qeth_generic_attr_groups[];
1059 extern const struct attribute_group *qeth_osn_attr_groups[];
1060 extern const struct attribute_group qeth_device_attr_group;
1061 extern const struct attribute_group qeth_device_blkt_group;
1062 extern const struct device_type qeth_generic_devtype;
1064 const char *qeth_get_cardname_short(struct qeth_card *);
1065 int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count);
1066 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
1067 void qeth_core_free_discipline(struct qeth_card *);
1069 /* exports for qeth discipline device drivers */
1070 extern struct kmem_cache *qeth_core_header_cache;
1071 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
1073 struct net_device *qeth_clone_netdev(struct net_device *orig);
1074 struct qeth_card *qeth_get_card_by_busid(char *bus_id);
1075 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
1076 int clear_start_mask);
1077 int qeth_threads_running(struct qeth_card *, unsigned long);
1078 int qeth_set_offline(struct qeth_card *card, bool resetting);
1080 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
1082 (struct qeth_card *, struct qeth_reply *, unsigned long),
1084 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
1085 enum qeth_ipa_cmds cmd_code,
1086 enum qeth_prot_versions prot,
1087 unsigned int data_length);
1088 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
1089 unsigned int length, unsigned int ccws,
1091 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
1092 enum qeth_ipa_funcs ipa_func,
1094 unsigned int data_length,
1095 enum qeth_prot_versions prot);
1096 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
1097 enum qeth_diags_cmds sub_cmd,
1098 unsigned int data_length);
1099 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason);
1100 void qeth_put_cmd(struct qeth_cmd_buffer *iob);
1102 int qeth_schedule_recovery(struct qeth_card *card);
1103 int qeth_poll(struct napi_struct *napi, int budget);
1104 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable);
1105 int qeth_setadpparms_change_macaddr(struct qeth_card *);
1106 void qeth_tx_timeout(struct net_device *, unsigned int txqueue);
1107 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
1109 bool (*match)(struct qeth_cmd_buffer *iob,
1110 struct qeth_cmd_buffer *reply));
1111 int qeth_query_switch_attributes(struct qeth_card *card,
1112 struct qeth_switch_info *sw_info);
1113 int qeth_query_card_info(struct qeth_card *card,
1114 struct carrier_info *carrier_info);
1115 int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
1116 enum qeth_ipa_isolation_modes mode);
1118 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset);
1119 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
1120 struct sk_buff *skb, struct qeth_hdr *hdr,
1121 unsigned int offset, unsigned int hd_len,
1122 int elements_needed);
1123 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
1124 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
1125 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
1126 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
1127 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
1128 int qeth_set_features(struct net_device *, netdev_features_t);
1129 void qeth_enable_hw_features(struct net_device *dev);
1130 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
1131 netdev_features_t qeth_features_check(struct sk_buff *skb,
1132 struct net_device *dev,
1133 netdev_features_t features);
1134 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats);
1135 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count);
1136 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1137 u8 cast_type, struct net_device *sb_dev);
1138 int qeth_open(struct net_device *dev);
1139 int qeth_stop(struct net_device *dev);
1141 int qeth_vm_request_mac(struct qeth_card *card);
1142 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
1143 struct qeth_qdio_out_q *queue, int ipv,
1144 void (*fill_header)(struct qeth_qdio_out_q *queue,
1145 struct qeth_hdr *hdr, struct sk_buff *skb,
1146 int ipv, unsigned int data_len));
1148 /* exports for OSN */
1149 int qeth_osn_assist(struct net_device *, void *, int);
1150 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
1151 int (*assist_cb)(struct net_device *, void *),
1152 int (*data_cb)(struct sk_buff *));
1153 void qeth_osn_deregister(struct net_device *);
1155 #endif /* __QETH_CORE_H__ */