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>
15 #include <linux/if_arp.h>
16 #include <linux/etherdevice.h>
17 #include <linux/if_vlan.h>
18 #include <linux/ctype.h>
19 #include <linux/in6.h>
20 #include <linux/bitops.h>
21 #include <linux/seq_file.h>
22 #include <linux/hashtable.h>
24 #include <linux/refcount.h>
25 #include <linux/timer.h>
26 #include <linux/wait.h>
27 #include <linux/workqueue.h>
30 #include <net/ip6_fib.h>
32 #include <net/if_inet6.h>
33 #include <net/addrconf.h>
34 #include <net/sch_generic.h>
37 #include <asm/debug.h>
39 #include <asm/ccwdev.h>
40 #include <asm/ccwgroup.h>
41 #include <asm/sysinfo.h>
43 #include <uapi/linux/if_link.h>
45 #include "qeth_core_mpc.h"
48 * Debug Facility stuff
54 QETH_DBF_INFOS /* must be last element */
57 struct qeth_dbf_info {
58 char name[DEBUG_MAX_NAME_LEN];
63 struct debug_view *view;
67 #define QETH_DBF_CTRL_LEN 256U
69 #define QETH_DBF_TEXT(name, level, text) \
70 debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
72 #define QETH_DBF_HEX(name, level, addr, len) \
73 debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
75 #define QETH_DBF_MESSAGE(level, text...) \
76 debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
78 #define QETH_DBF_TEXT_(name, level, text...) \
79 qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
81 #define QETH_CARD_TEXT(card, level, text) \
82 debug_text_event(card->debug, level, text)
84 #define QETH_CARD_HEX(card, level, addr, len) \
85 debug_event(card->debug, level, (void *)(addr), len)
87 #define QETH_CARD_MESSAGE(card, text...) \
88 debug_sprintf_event(card->debug, level, text)
90 #define QETH_CARD_TEXT_(card, level, text...) \
91 qeth_dbf_longtext(card->debug, level, text)
93 #define SENSE_COMMAND_REJECT_BYTE 0
94 #define SENSE_COMMAND_REJECT_FLAG 0x80
95 #define SENSE_RESETTING_EVENT_BYTE 1
96 #define SENSE_RESETTING_EVENT_FLAG 0x80
98 static inline u32 qeth_get_device_id(struct ccw_device *cdev)
100 struct ccw_dev_id dev_id;
103 ccw_device_get_id(cdev, &dev_id);
105 id |= (u32) (dev_id.ssid << 16);
111 * Common IO related definitions
113 #define CARD_RDEV(card) card->read.ccwdev
114 #define CARD_WDEV(card) card->write.ccwdev
115 #define CARD_DDEV(card) card->data.ccwdev
116 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
117 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
118 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
119 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
120 #define CCW_DEVID(cdev) (qeth_get_device_id(cdev))
121 #define CARD_DEVID(card) (CCW_DEVID(CARD_RDEV(card)))
124 struct qeth_routing_info {
125 enum qeth_routing_types type;
128 /* SETBRIDGEPORT stuff */
129 enum qeth_sbp_roles {
130 QETH_SBP_ROLE_NONE = 0,
131 QETH_SBP_ROLE_PRIMARY = 1,
132 QETH_SBP_ROLE_SECONDARY = 2,
135 enum qeth_sbp_states {
136 QETH_SBP_STATE_INACTIVE = 0,
137 QETH_SBP_STATE_STANDBY = 1,
138 QETH_SBP_STATE_ACTIVE = 2,
141 #define QETH_SBP_HOST_NOTIFICATION 1
143 struct qeth_sbp_info {
144 __u32 supported_funcs;
145 enum qeth_sbp_roles role;
146 __u32 hostnotification:1;
147 __u32 reflect_promisc:1;
148 __u32 reflect_promisc_primary:1;
151 struct qeth_vnicc_info {
152 /* supported/currently configured VNICCs; updated in IPA exchanges */
155 /* supported commands: bitmasks which VNICCs support respective cmd */
157 u32 getset_timeout_sup;
158 /* timeout value for the learning characteristic */
159 u32 learning_timeout;
160 /* characteristics wanted/configured by user */
162 /* has user explicitly enabled rx_bcast while online? */
163 bool rx_bcast_enabled;
166 #define QETH_IDX_FUNC_LEVEL_OSD 0x0101
167 #define QETH_IDX_FUNC_LEVEL_IQD 0x4108
169 #define QETH_BUFSIZE 4096
170 #define CCW_CMD_WRITE 0x01
171 #define CCW_CMD_READ 0x02
176 #define QETH_TX_TIMEOUT 100 * HZ
177 #define QETH_RCD_TIMEOUT 60 * HZ
178 #define QETH_RECLAIM_WORK_TIME HZ
179 #define QETH_MAX_PORTNO 15
181 /*IPv6 address autoconfiguration stuff*/
182 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
183 #define UNIQUE_ID_NOT_BY_CARD 0x10000
185 /*****************************************************************************/
186 /* QDIO queue and buffer handling */
187 /*****************************************************************************/
188 #define QETH_MAX_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_RX_COPYBREAK (PAGE_SIZE >> 1)
194 #define QETH_IN_BUF_SIZE_DEFAULT 65536
195 #define QETH_IN_BUF_COUNT_DEFAULT 64
196 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
197 #define QETH_IN_BUF_COUNT_MIN 8
198 #define QETH_IN_BUF_COUNT_MAX 128
199 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
200 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
201 ((card)->qdio.in_buf_pool.buf_count / 2)
203 /* buffers we have to be behind before we get a PCI */
204 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
205 /*enqueued free buffers left before we get a PCI*/
206 #define QETH_PCI_THRESHOLD_B(card) 0
207 /*not used unless the microcode gets patched*/
208 #define QETH_PCI_TIMER_VALUE(card) 3
210 /* priority queing */
211 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
212 #define QETH_DEFAULT_QUEUE 2
213 #define QETH_NO_PRIO_QUEUEING 0
214 #define QETH_PRIO_Q_ING_PREC 1
215 #define QETH_PRIO_Q_ING_TOS 2
216 #define QETH_PRIO_Q_ING_SKB 3
217 #define QETH_PRIO_Q_ING_VLAN 4
220 #define QETH_LOW_WATERMARK_PACK 2
221 #define QETH_HIGH_WATERMARK_PACK 5
222 #define QETH_WATERMARK_PACK_FUZZ 1
224 struct qeth_hdr_layer3 {
227 __u16 inbound_checksum; /*TSO:__u16 seqno */
228 __u32 token; /*TSO: __u32 reserved */
236 struct in6_addr ipv6_addr;
252 struct qeth_hdr_layer2 {
262 } __attribute__ ((packed));
264 struct qeth_hdr_osn {
273 } __attribute__ ((packed));
277 struct qeth_hdr_layer2 l2;
278 struct qeth_hdr_layer3 l3;
279 struct qeth_hdr_osn osn;
281 } __attribute__ ((packed));
283 /*TCP Segmentation Offload header*/
284 struct qeth_hdr_ext_tso {
295 } __attribute__ ((packed));
297 struct qeth_hdr_tso {
298 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
299 struct qeth_hdr_ext_tso ext;
300 } __attribute__ ((packed));
303 /* flags for qeth_hdr.flags */
304 #define QETH_HDR_PASSTHRU 0x10
305 #define QETH_HDR_IPV6 0x80
306 #define QETH_HDR_CAST_MASK 0x07
307 enum qeth_cast_flags {
308 QETH_CAST_UNICAST = 0x06,
309 QETH_CAST_MULTICAST = 0x04,
310 QETH_CAST_BROADCAST = 0x05,
311 QETH_CAST_ANYCAST = 0x07,
312 QETH_CAST_NOCAST = 0x00,
315 enum qeth_layer2_frame_flags {
316 QETH_LAYER2_FLAG_MULTICAST = 0x01,
317 QETH_LAYER2_FLAG_BROADCAST = 0x02,
318 QETH_LAYER2_FLAG_UNICAST = 0x04,
319 QETH_LAYER2_FLAG_VLAN = 0x10,
322 enum qeth_header_ids {
323 QETH_HEADER_TYPE_LAYER3 = 0x01,
324 QETH_HEADER_TYPE_LAYER2 = 0x02,
325 QETH_HEADER_TYPE_L3_TSO = 0x03,
326 QETH_HEADER_TYPE_OSN = 0x04,
327 QETH_HEADER_TYPE_L2_TSO = 0x06,
328 QETH_HEADER_MASK_INVAL = 0x80,
330 /* flags for qeth_hdr.ext_flags */
331 #define QETH_HDR_EXT_VLAN_FRAME 0x01
332 #define QETH_HDR_EXT_TOKEN_ID 0x02
333 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
334 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08
335 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10
336 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20
337 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/
339 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1,
340 struct qeth_hdr_layer2 *h2)
342 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) &&
343 h1->vlan_id == h2->vlan_id;
346 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1,
347 struct qeth_hdr_layer3 *h2)
349 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) &&
350 h1->vlan_id == h2->vlan_id;
353 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1,
354 struct qeth_hdr_layer3 *h2)
356 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) &&
357 ipv6_addr_equal(&h1->next_hop.ipv6_addr,
358 &h2->next_hop.ipv6_addr);
361 enum qeth_qdio_info_states {
362 QETH_QDIO_UNINITIALIZED,
364 QETH_QDIO_ESTABLISHED,
368 struct qeth_buffer_pool_entry {
369 struct list_head list;
370 struct list_head init_list;
371 struct page *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
374 struct qeth_qdio_buffer_pool {
375 struct list_head entry_list;
379 struct qeth_qdio_buffer {
380 struct qdio_buffer *buffer;
381 /* the buffer pool entry currently associated to this buffer */
382 struct qeth_buffer_pool_entry *pool_entry;
383 struct sk_buff *rx_skb;
387 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
388 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
389 int next_buf_to_init;
392 enum qeth_qdio_out_buffer_state {
393 /* Owned by driver, in order to be filled. */
395 /* Filled by driver; owned by hardware in order to be sent. */
396 QETH_QDIO_BUF_PRIMED,
397 /* Identified to be pending in TPQ. */
398 QETH_QDIO_BUF_PENDING,
399 /* Found in completion queue. */
401 /* Handled via transfer pending / completion queue. */
402 QETH_QDIO_BUF_HANDLED_DELAYED,
405 struct qeth_qdio_out_buffer {
406 struct qdio_buffer *buffer;
408 int next_element_to_fill;
410 struct sk_buff_head skb_list;
411 int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
413 struct qeth_qdio_out_q *q;
414 struct qeth_qdio_out_buffer *next_pending;
419 enum qeth_out_q_states {
422 QETH_OUT_Q_LOCKED_FLUSH,
425 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val))
426 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1)
428 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val))
429 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1)
431 struct qeth_card_stats {
436 u64 rx_sg_alloc_page;
438 u64 rx_dropped_nomem;
439 u64 rx_dropped_notsupp;
442 /* rtnl_link_stats64 */
446 u64 rx_length_errors;
451 struct qeth_out_q_stats {
460 u64 skbs_linearized_fail;
462 u64 packing_mode_switch;
464 u64 completion_yield;
465 u64 completion_timer;
467 /* rtnl_link_stats64 */
474 #define QETH_TX_TIMER_USECS 500
476 struct qeth_qdio_out_q {
477 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
478 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
479 struct qdio_outbuf_state *bufstates; /* convenience pointer */
480 struct qeth_out_q_stats stats;
485 struct qeth_card *card;
488 * number of buffers that are currently filled (PRIMED)
489 * -> these buffers are hardware-owned
491 atomic_t used_buffers;
492 /* indicates whether PCI flag must be set (or if one is outstanding) */
493 atomic_t set_pci_flags_count;
494 struct napi_struct napi;
495 struct timer_list timer;
496 struct qeth_hdr *prev_hdr;
502 #define qeth_for_each_output_queue(card, q, i) \
503 for (i = 0; i < card->qdio.no_out_queues && \
504 (q = card->qdio.out_qs[i]); i++)
506 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi)
508 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue)
510 if (timer_pending(&queue->timer))
512 mod_timer(&queue->timer, usecs_to_jiffies(QETH_TX_TIMER_USECS) +
516 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue)
518 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q;
521 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue)
523 return atomic_read(&queue->used_buffers) == 0;
526 struct qeth_qdio_info {
530 struct qeth_qdio_q *in_q;
531 struct qeth_qdio_q *c_q;
532 struct qeth_qdio_buffer_pool in_buf_pool;
533 struct qeth_qdio_buffer_pool init_pool;
538 struct qeth_qdio_out_q *out_qs[QETH_MAX_QUEUES];
539 struct qdio_outbuf_state *out_bufstates;
541 /* priority queueing */
542 int do_prio_queueing;
543 int default_out_queue;
547 * channel state machine
549 enum qeth_channel_states {
558 enum qeth_card_states {
560 CARD_STATE_SOFTSETUP,
566 enum qeth_prot_versions {
567 QETH_PROT_NONE = 0x0000,
568 QETH_PROT_IPV4 = 0x0004,
569 QETH_PROT_IPV6 = 0x0006,
573 QETH_CQ_DISABLED = 0,
575 QETH_CQ_NOTAVAILABLE = 2,
582 struct list_head entries;
585 struct qeth_channel {
586 struct ccw_device *ccwdev;
587 struct qeth_cmd_buffer *active_cmd;
588 enum qeth_channel_states state;
589 atomic_t irq_pending;
593 int (*callback)(struct qeth_card *card, struct qeth_reply *reply,
598 struct qeth_cmd_buffer {
599 struct list_head list;
600 struct completion done;
603 refcount_t ref_count;
604 struct qeth_channel *channel;
605 struct qeth_reply reply;
608 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob);
609 bool (*match)(struct qeth_cmd_buffer *iob,
610 struct qeth_cmd_buffer *reply);
611 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob,
612 unsigned int data_length);
616 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob)
618 refcount_inc(&iob->ref_count);
621 static inline struct qeth_ipa_cmd *__ipa_reply(struct qeth_cmd_buffer *iob)
623 if (!IS_IPA(iob->data))
626 return (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
629 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
631 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
634 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob)
636 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8));
639 static inline bool qeth_trylock_channel(struct qeth_channel *channel)
641 return atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0;
645 * OSA card related definitions
652 __u32 cm_connection_w;
653 __u32 cm_connection_r;
656 __u32 ulp_connection_w;
657 __u32 ulp_connection_r;
667 struct qeth_card_blkt {
670 int inter_packet_jumbo;
673 #define QETH_BROADCAST_WITH_ECHO 0x01
674 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
675 #define QETH_LAYER2_MAC_REGISTERED 0x02
676 struct qeth_card_info {
677 unsigned short unit_addr2;
681 char mcl_level[QETH_MCL_LENGTH + 1];
682 u8 open_when_online:1;
687 enum qeth_card_types type;
688 enum qeth_link_types link_type;
689 int broadcast_capable;
692 struct qeth_card_blkt blkt;
693 __u32 diagass_support;
697 enum qeth_discipline_id {
698 QETH_DISCIPLINE_UNDETERMINED = -1,
699 QETH_DISCIPLINE_LAYER3 = 0,
700 QETH_DISCIPLINE_LAYER2 = 1,
703 struct qeth_card_options {
704 struct qeth_ipa_caps ipa4;
705 struct qeth_ipa_caps ipa6;
706 struct qeth_routing_info route4;
707 struct qeth_routing_info route6;
708 struct qeth_ipa_caps adp; /* Adapter parameters */
709 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
710 struct qeth_vnicc_info vnicc; /* VNICC options */
712 enum qeth_discipline_id layer;
713 enum qeth_ipa_isolation_modes isolation;
714 enum qeth_ipa_isolation_modes prev_isolation;
720 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2)
721 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3)
724 * thread bits for qeth_card thread masks
727 QETH_RECOVER_THREAD = 1,
730 struct qeth_osn_info {
731 int (*assist_cb)(struct net_device *dev, void *data);
732 int (*data_cb)(struct sk_buff *skb);
735 struct qeth_discipline {
736 const struct device_type *devtype;
737 int (*setup) (struct ccwgroup_device *);
738 void (*remove) (struct ccwgroup_device *);
739 int (*set_online)(struct qeth_card *card);
740 void (*set_offline)(struct qeth_card *card);
741 int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd);
742 int (*control_event_handler)(struct qeth_card *card,
743 struct qeth_ipa_cmd *cmd);
746 enum qeth_addr_disposition {
747 QETH_DISP_ADDR_DELETE = 0,
748 QETH_DISP_ADDR_DO_NOTHING = 1,
749 QETH_DISP_ADDR_ADD = 2,
760 struct carrier_info {
766 struct qeth_switch_info {
772 unsigned int rx_copybreak;
775 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
778 enum qeth_card_states state;
780 struct ccwgroup_device *gdev;
781 struct qeth_cmd_buffer *read_cmd;
782 struct qeth_channel read;
783 struct qeth_channel write;
784 struct qeth_channel data;
786 struct net_device *dev;
787 struct qeth_card_stats stats;
788 struct qeth_card_info info;
789 struct qeth_token token;
790 struct qeth_seqno seqno;
791 struct qeth_card_options options;
793 struct workqueue_struct *event_wq;
794 struct workqueue_struct *cmd_wq;
795 wait_queue_head_t wait_q;
796 DECLARE_HASHTABLE(mac_htable, 4);
797 DECLARE_HASHTABLE(ip_htable, 4);
798 struct mutex ip_lock;
799 DECLARE_HASHTABLE(ip_mc_htable, 4);
800 struct work_struct rx_mode_work;
801 struct work_struct kernel_thread_starter;
802 spinlock_t thread_mask_lock;
803 unsigned long thread_start_mask;
804 unsigned long thread_allowed_mask;
805 unsigned long thread_running_mask;
806 struct qeth_ipato ipato;
807 struct list_head cmd_waiter_list;
808 /* QDIO buffer handling */
809 struct qeth_qdio_info qdio;
810 int read_or_write_problem;
811 struct qeth_osn_info osn_info;
812 struct qeth_discipline *discipline;
813 atomic_t force_alloc_skb;
814 struct service_level qeth_service_level;
815 struct qdio_ssqd_desc ssqd;
817 struct mutex sbp_lock;
818 struct mutex conf_mutex;
819 struct mutex discipline_mutex;
820 struct napi_struct napi;
822 struct delayed_work buffer_reclaim_work;
824 struct work_struct close_dev_work;
827 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card)
829 return card->state == CARD_STATE_SOFTSETUP;
832 static inline void qeth_unlock_channel(struct qeth_card *card,
833 struct qeth_channel *channel)
835 atomic_set(&channel->irq_pending, 0);
836 wake_up(&card->wait_q);
839 struct qeth_trap_id {
847 /*some helper functions*/
848 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
850 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq)
852 if (txq == QETH_IQD_MCAST_TXQ)
853 return dev->num_tx_queues - 1;
854 if (txq == dev->num_tx_queues - 1)
855 return QETH_IQD_MCAST_TXQ;
859 static inline bool qeth_iqd_is_mcast_queue(struct qeth_card *card,
860 struct qeth_qdio_out_q *queue)
862 return qeth_iqd_translate_txq(card->dev, queue->queue_no) ==
866 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf,
867 unsigned int elements)
871 for (i = 0; i < elements; i++)
872 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element));
873 buf->element[14].sflags = 0;
874 buf->element[15].sflags = 0;
878 * qeth_get_elements_for_range() - find number of SBALEs to cover range.
879 * @start: Start of the address range.
880 * @end: Address after the end of the range.
882 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
883 * the specified address range.
885 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
887 return PFN_UP(end) - PFN_DOWN(start);
890 static inline int qeth_get_ip_version(struct sk_buff *skb)
892 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
893 __be16 prot = veth->h_vlan_proto;
895 if (prot == htons(ETH_P_8021Q))
896 prot = veth->h_vlan_encapsulated_proto;
899 case htons(ETH_P_IPV6):
901 case htons(ETH_P_IP):
908 static inline int qeth_get_ether_cast_type(struct sk_buff *skb)
910 u8 *addr = eth_hdr(skb)->h_dest;
912 if (is_multicast_ether_addr(addr))
913 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST :
918 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb, int ipv)
920 struct dst_entry *dst = skb_dst(skb);
923 rt = (struct rt6_info *) dst;
925 dst = dst_check(dst, (ipv == 6) ? rt6_get_cookie(rt) : 0);
929 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv)
931 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
932 if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) ||
933 (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP))
934 *flags |= QETH_HDR_EXT_UDP;
937 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
938 struct qeth_buffer_pool_entry *entry)
940 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
943 static inline int qeth_is_diagass_supported(struct qeth_card *card,
944 enum qeth_diags_cmds cmd)
946 return card->info.diagass_support & (__u32)cmd;
949 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
950 enum qeth_ipa_funcs ipa_func,
951 u16 cmd_code, u32 *data,
952 enum qeth_prot_versions prot);
954 static inline int qeth_send_simple_setassparms(struct qeth_card *card,
955 enum qeth_ipa_funcs ipa_func,
956 u16 cmd_code, u32 *data)
958 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
959 data, QETH_PROT_IPV4);
962 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
963 enum qeth_ipa_funcs ipa_func,
964 u16 cmd_code, u32 *data)
966 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
967 data, QETH_PROT_IPV6);
970 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb);
972 extern struct qeth_discipline qeth_l2_discipline;
973 extern struct qeth_discipline qeth_l3_discipline;
974 extern const struct ethtool_ops qeth_ethtool_ops;
975 extern const struct ethtool_ops qeth_osn_ethtool_ops;
976 extern const struct attribute_group *qeth_generic_attr_groups[];
977 extern const struct attribute_group *qeth_osn_attr_groups[];
978 extern const struct attribute_group qeth_device_attr_group;
979 extern const struct attribute_group qeth_device_blkt_group;
980 extern const struct device_type qeth_generic_devtype;
982 const char *qeth_get_cardname_short(struct qeth_card *);
983 int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count);
984 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
985 void qeth_core_free_discipline(struct qeth_card *);
987 /* exports for qeth discipline device drivers */
988 extern struct kmem_cache *qeth_core_header_cache;
989 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
991 struct net_device *qeth_clone_netdev(struct net_device *orig);
992 struct qeth_card *qeth_get_card_by_busid(char *bus_id);
993 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
994 int qeth_threads_running(struct qeth_card *, unsigned long);
995 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok);
996 int qeth_stop_channel(struct qeth_channel *channel);
997 int qeth_set_offline(struct qeth_card *card, bool resetting);
999 void qeth_print_status_message(struct qeth_card *);
1000 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
1002 (struct qeth_card *, struct qeth_reply *, unsigned long),
1004 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
1005 enum qeth_ipa_cmds cmd_code,
1006 enum qeth_prot_versions prot,
1007 unsigned int data_length);
1008 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
1009 unsigned int length, unsigned int ccws,
1011 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
1012 enum qeth_ipa_funcs ipa_func,
1014 unsigned int data_length,
1015 enum qeth_prot_versions prot);
1016 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
1017 enum qeth_diags_cmds sub_cmd,
1018 unsigned int data_length);
1019 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason);
1020 void qeth_put_cmd(struct qeth_cmd_buffer *iob);
1022 void qeth_schedule_recovery(struct qeth_card *);
1023 int qeth_poll(struct napi_struct *napi, int budget);
1024 void qeth_clear_ipacmd_list(struct qeth_card *);
1025 int qeth_qdio_clear_card(struct qeth_card *, int);
1026 void qeth_clear_working_pool_list(struct qeth_card *);
1027 void qeth_drain_output_queues(struct qeth_card *card);
1028 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable);
1029 int qeth_setadpparms_change_macaddr(struct qeth_card *);
1030 void qeth_tx_timeout(struct net_device *, unsigned int txqueue);
1031 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
1033 bool (*match)(struct qeth_cmd_buffer *iob,
1034 struct qeth_cmd_buffer *reply));
1035 int qeth_query_switch_attributes(struct qeth_card *card,
1036 struct qeth_switch_info *sw_info);
1037 int qeth_query_card_info(struct qeth_card *card,
1038 struct carrier_info *carrier_info);
1039 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset);
1040 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
1041 struct sk_buff *skb, struct qeth_hdr *hdr,
1042 unsigned int offset, unsigned int hd_len,
1043 int elements_needed);
1044 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
1045 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
1046 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
1047 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
1048 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
1049 void qeth_trace_features(struct qeth_card *);
1050 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
1051 int qeth_setup_netdev(struct qeth_card *card);
1052 int qeth_set_features(struct net_device *, netdev_features_t);
1053 void qeth_enable_hw_features(struct net_device *dev);
1054 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
1055 netdev_features_t qeth_features_check(struct sk_buff *skb,
1056 struct net_device *dev,
1057 netdev_features_t features);
1058 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats);
1059 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count);
1060 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1061 u8 cast_type, struct net_device *sb_dev);
1062 int qeth_open(struct net_device *dev);
1063 int qeth_stop(struct net_device *dev);
1065 int qeth_vm_request_mac(struct qeth_card *card);
1066 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
1067 struct qeth_qdio_out_q *queue, int ipv,
1068 void (*fill_header)(struct qeth_qdio_out_q *queue,
1069 struct qeth_hdr *hdr, struct sk_buff *skb,
1070 int ipv, unsigned int data_len));
1072 /* exports for OSN */
1073 int qeth_osn_assist(struct net_device *, void *, int);
1074 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
1075 int (*assist_cb)(struct net_device *, void *),
1076 int (*data_cb)(struct sk_buff *));
1077 void qeth_osn_deregister(struct net_device *);
1079 #endif /* __QETH_CORE_H__ */