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));
264 struct qeth_hdr_layer2 l2;
265 struct qeth_hdr_layer3 l3;
267 } __attribute__ ((packed));
269 #define QETH_QIB_PQUE_ORDER_RR 0
270 #define QETH_QIB_PQUE_UNITS_SBAL 2
271 #define QETH_QIB_PQUE_PRIO_DEFAULT 4
273 struct qeth_qib_parms {
280 u32 blkt_inter_packet;
281 u32 blkt_inter_packet_jumbo;
286 u32 pque_priority[4];
289 /*TCP Segmentation Offload header*/
290 struct qeth_hdr_ext_tso {
301 } __attribute__ ((packed));
303 struct qeth_hdr_tso {
304 struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
305 struct qeth_hdr_ext_tso ext;
306 } __attribute__ ((packed));
309 /* flags for qeth_hdr.flags */
310 #define QETH_HDR_PASSTHRU 0x10
311 #define QETH_HDR_IPV6 0x80
312 #define QETH_HDR_CAST_MASK 0x07
313 enum qeth_cast_flags {
314 QETH_CAST_UNICAST = 0x06,
315 QETH_CAST_MULTICAST = 0x04,
316 QETH_CAST_BROADCAST = 0x05,
317 QETH_CAST_ANYCAST = 0x07,
318 QETH_CAST_NOCAST = 0x00,
321 enum qeth_layer2_frame_flags {
322 QETH_LAYER2_FLAG_MULTICAST = 0x01,
323 QETH_LAYER2_FLAG_BROADCAST = 0x02,
324 QETH_LAYER2_FLAG_UNICAST = 0x04,
325 QETH_LAYER2_FLAG_VLAN = 0x10,
328 enum qeth_header_ids {
329 QETH_HEADER_TYPE_LAYER3 = 0x01,
330 QETH_HEADER_TYPE_LAYER2 = 0x02,
331 QETH_HEADER_TYPE_L3_TSO = 0x03,
332 QETH_HEADER_TYPE_L2_TSO = 0x06,
333 QETH_HEADER_MASK_INVAL = 0x80,
335 /* flags for qeth_hdr.ext_flags */
336 #define QETH_HDR_EXT_VLAN_FRAME 0x01
337 #define QETH_HDR_EXT_TOKEN_ID 0x02
338 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
339 #define QETH_HDR_EXT_SRC_MAC_ADDR 0x08
340 #define QETH_HDR_EXT_CSUM_HDR_REQ 0x10
341 #define QETH_HDR_EXT_CSUM_TRANSP_REQ 0x20
342 #define QETH_HDR_EXT_UDP 0x40 /*bit off for TCP*/
344 static inline bool qeth_l2_same_vlan(struct qeth_hdr_layer2 *h1,
345 struct qeth_hdr_layer2 *h2)
347 return !((h1->flags[2] ^ h2->flags[2]) & QETH_LAYER2_FLAG_VLAN) &&
348 h1->vlan_id == h2->vlan_id;
351 static inline bool qeth_l3_iqd_same_vlan(struct qeth_hdr_layer3 *h1,
352 struct qeth_hdr_layer3 *h2)
354 return !((h1->ext_flags ^ h2->ext_flags) & QETH_HDR_EXT_VLAN_FRAME) &&
355 h1->vlan_id == h2->vlan_id;
358 static inline bool qeth_l3_same_next_hop(struct qeth_hdr_layer3 *h1,
359 struct qeth_hdr_layer3 *h2)
361 return !((h1->flags ^ h2->flags) & QETH_HDR_IPV6) &&
362 ipv6_addr_equal(&h1->next_hop.addr, &h2->next_hop.addr);
365 struct qeth_local_addr {
366 struct hlist_node hnode;
368 struct in6_addr addr;
371 enum qeth_qdio_info_states {
372 QETH_QDIO_UNINITIALIZED,
374 QETH_QDIO_ESTABLISHED,
378 struct qeth_buffer_pool_entry {
379 struct list_head list;
380 struct list_head init_list;
381 struct page *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
384 struct qeth_qdio_buffer_pool {
385 struct list_head entry_list;
389 struct qeth_qdio_buffer {
390 struct qdio_buffer *buffer;
391 /* the buffer pool entry currently associated to this buffer */
392 struct qeth_buffer_pool_entry *pool_entry;
393 struct sk_buff *rx_skb;
397 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
398 struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
399 int next_buf_to_init;
402 enum qeth_qdio_out_buffer_state {
403 /* Owned by driver, in order to be filled. */
405 /* Filled by driver; owned by hardware in order to be sent. */
406 QETH_QDIO_BUF_PRIMED,
409 enum qeth_qaob_state {
415 struct qeth_qaob_priv1 {
420 struct qeth_qdio_out_buffer {
421 struct qdio_buffer *buffer;
423 int next_element_to_fill;
426 struct sk_buff_head skb_list;
427 DECLARE_BITMAP(from_kmem_cache, QDIO_MAX_ELEMENTS_PER_BUFFER);
429 struct list_head list_entry;
435 #define QETH_CARD_STAT_ADD(_c, _stat, _val) ((_c)->stats._stat += (_val))
436 #define QETH_CARD_STAT_INC(_c, _stat) QETH_CARD_STAT_ADD(_c, _stat, 1)
438 #define QETH_TXQ_STAT_ADD(_q, _stat, _val) ((_q)->stats._stat += (_val))
439 #define QETH_TXQ_STAT_INC(_q, _stat) QETH_TXQ_STAT_ADD(_q, _stat, 1)
441 struct qeth_card_stats {
446 u64 rx_sg_alloc_page;
448 u64 rx_dropped_nomem;
449 u64 rx_dropped_notsupp;
452 /* rtnl_link_stats64 */
456 u64 rx_length_errors;
461 struct qeth_out_q_stats {
470 u64 skbs_linearized_fail;
472 u64 packing_mode_switch;
477 u64 completion_yield;
478 u64 completion_timer;
480 /* rtnl_link_stats64 */
487 #define QETH_TX_MAX_COALESCED_FRAMES 1
488 #define QETH_TX_COALESCE_USECS 25
489 #define QETH_TX_TIMER_USECS 500
491 struct qeth_qdio_out_q {
492 struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
493 struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
494 struct list_head pending_bufs;
495 struct qeth_out_q_stats stats;
497 unsigned int priority;
502 struct qeth_card *card;
504 * number of buffers that are currently filled (PRIMED)
505 * -> these buffers are hardware-owned
507 atomic_t used_buffers;
508 /* indicates whether PCI flag must be set (or if one is outstanding) */
509 atomic_t set_pci_flags_count;
510 struct napi_struct napi;
511 struct timer_list timer;
512 struct qeth_hdr *prev_hdr;
513 unsigned int coalesced_frames;
518 unsigned int coalesce_usecs;
519 unsigned int max_coalesced_frames;
520 unsigned int rescan_usecs;
523 #define qeth_for_each_output_queue(card, q, i) \
524 for (i = 0; i < card->qdio.no_out_queues && \
525 (q = card->qdio.out_qs[i]); i++)
527 #define qeth_napi_to_out_queue(n) container_of(n, struct qeth_qdio_out_q, napi)
529 static inline void qeth_tx_arm_timer(struct qeth_qdio_out_q *queue,
532 timer_reduce(&queue->timer, usecs_to_jiffies(usecs) + jiffies);
535 static inline bool qeth_out_queue_is_full(struct qeth_qdio_out_q *queue)
537 return atomic_read(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q;
540 static inline bool qeth_out_queue_is_empty(struct qeth_qdio_out_q *queue)
542 return atomic_read(&queue->used_buffers) == 0;
545 struct qeth_qdio_info {
549 struct qeth_qdio_q *in_q;
550 struct qeth_qdio_q *c_q;
551 struct qeth_qdio_buffer_pool in_buf_pool;
552 struct qeth_qdio_buffer_pool init_pool;
556 unsigned int no_out_queues;
557 struct qeth_qdio_out_q *out_qs[QETH_MAX_OUT_QUEUES];
559 /* priority queueing */
560 int do_prio_queueing;
561 int default_out_queue;
565 * channel state machine
567 enum qeth_channel_states {
576 enum qeth_card_states {
578 CARD_STATE_SOFTSETUP,
584 enum qeth_prot_versions {
585 QETH_PROT_NONE = 0x0000,
586 QETH_PROT_IPV4 = 0x0004,
587 QETH_PROT_IPV6 = 0x0006,
591 QETH_CQ_DISABLED = 0,
593 QETH_CQ_NOTAVAILABLE = 2,
600 struct list_head entries;
603 struct qeth_channel {
604 struct ccw_device *ccwdev;
605 struct qeth_cmd_buffer *active_cmd;
606 enum qeth_channel_states state;
610 int (*callback)(struct qeth_card *card, struct qeth_reply *reply,
615 struct qeth_cmd_buffer {
616 struct list_head list_entry;
617 struct completion done;
620 refcount_t ref_count;
621 struct qeth_channel *channel;
622 struct qeth_reply reply;
625 void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob);
626 bool (*match)(struct qeth_cmd_buffer *iob,
627 struct qeth_cmd_buffer *reply);
628 void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob,
629 unsigned int data_length);
633 static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob)
635 refcount_inc(&iob->ref_count);
638 static inline struct qeth_ipa_cmd *__ipa_reply(struct qeth_cmd_buffer *iob)
640 if (!IS_IPA(iob->data))
643 return (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
646 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
648 return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
651 static inline struct ccw1 *__ccw_from_cmd(struct qeth_cmd_buffer *iob)
653 return (struct ccw1 *)(iob->data + ALIGN(iob->length, 8));
657 * OSA card related definitions
664 __u32 cm_connection_w;
665 __u32 cm_connection_r;
668 __u32 ulp_connection_w;
669 __u32 ulp_connection_r;
679 struct qeth_card_blkt {
682 int inter_packet_jumbo;
685 enum qeth_pnso_mode {
687 QETH_PNSO_BRIDGEPORT,
691 enum qeth_link_mode {
692 QETH_LINK_MODE_UNKNOWN,
693 QETH_LINK_MODE_FIBRE_SHORT,
694 QETH_LINK_MODE_FIBRE_LONG,
697 struct qeth_link_info {
701 enum qeth_link_mode link_mode;
704 #define QETH_BROADCAST_WITH_ECHO 0x01
705 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
706 struct qeth_card_info {
707 unsigned short unit_addr2;
710 char mcl_level[QETH_MCL_LENGTH + 1];
711 /* doubleword below corresponds to net_if_token */
718 u8 ids_valid:1; /* cssid,iid,chid */
719 u8 dev_addr_is_registered:1;
720 u8 open_when_online:1;
724 /* no bitfield, we take a pointer on these two: */
727 enum qeth_pnso_mode pnso_mode;
728 enum qeth_card_types type;
729 enum qeth_link_types link_type;
730 int broadcast_capable;
732 struct qeth_card_blkt blkt;
733 __u32 diagass_support;
735 struct qeth_link_info link_info;
738 enum qeth_discipline_id {
739 QETH_DISCIPLINE_UNDETERMINED = -1,
740 QETH_DISCIPLINE_LAYER3 = 0,
741 QETH_DISCIPLINE_LAYER2 = 1,
744 struct qeth_card_options {
745 struct qeth_ipa_caps ipa4;
746 struct qeth_ipa_caps ipa6;
747 struct qeth_routing_info route4;
748 struct qeth_routing_info route6;
749 struct qeth_ipa_caps adp; /* Adapter parameters */
750 struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
751 struct qeth_vnicc_info vnicc; /* VNICC options */
752 enum qeth_discipline_id layer;
753 enum qeth_ipa_isolation_modes isolation;
759 #define IS_LAYER2(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER2)
760 #define IS_LAYER3(card) ((card)->options.layer == QETH_DISCIPLINE_LAYER3)
763 * thread bits for qeth_card thread masks
766 QETH_RECOVER_THREAD = 1,
769 struct qeth_discipline {
770 int (*setup) (struct ccwgroup_device *);
771 void (*remove) (struct ccwgroup_device *);
772 int (*set_online)(struct qeth_card *card, bool carrier_ok);
773 void (*set_offline)(struct qeth_card *card);
774 int (*do_ioctl)(struct net_device *dev, struct ifreq *rq,
775 void __user *data, int cmd);
776 int (*control_event_handler)(struct qeth_card *card,
777 struct qeth_ipa_cmd *cmd);
780 enum qeth_addr_disposition {
781 QETH_DISP_ADDR_DELETE = 0,
782 QETH_DISP_ADDR_DO_NOTHING = 1,
783 QETH_DISP_ADDR_ADD = 2,
795 struct qeth_switch_info {
801 unsigned int rx_copybreak;
802 unsigned int tx_wanted_queues;
803 u32 brport_hw_features;
807 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
810 enum qeth_card_states state;
812 struct ccwgroup_device *gdev;
813 struct qeth_cmd_buffer *read_cmd;
814 struct qeth_channel read;
815 struct qeth_channel write;
816 struct qeth_channel data;
818 struct net_device *dev;
819 struct dentry *debugfs;
820 struct qeth_card_stats stats;
821 struct qeth_card_info info;
822 struct qeth_token token;
823 struct qeth_seqno seqno;
824 struct qeth_card_options options;
826 struct workqueue_struct *event_wq;
827 struct workqueue_struct *cmd_wq;
828 wait_queue_head_t wait_q;
830 struct mutex ip_lock;
831 /* protected by ip_lock: */
832 DECLARE_HASHTABLE(ip_htable, 4);
833 struct qeth_ipato ipato;
835 DECLARE_HASHTABLE(local_addrs4, 4);
836 DECLARE_HASHTABLE(local_addrs6, 4);
837 spinlock_t local_addrs4_lock;
838 spinlock_t local_addrs6_lock;
839 DECLARE_HASHTABLE(rx_mode_addrs, 4);
840 struct work_struct rx_mode_work;
841 struct work_struct kernel_thread_starter;
842 spinlock_t thread_mask_lock;
843 unsigned long thread_start_mask;
844 unsigned long thread_allowed_mask;
845 unsigned long thread_running_mask;
846 struct list_head cmd_waiter_list;
847 /* QDIO buffer handling */
848 struct qeth_qdio_info qdio;
849 int read_or_write_problem;
850 const struct qeth_discipline *discipline;
851 atomic_t force_alloc_skb;
852 struct service_level qeth_service_level;
853 struct qdio_ssqd_desc ssqd;
855 struct mutex sbp_lock;
856 struct mutex conf_mutex;
857 struct mutex discipline_mutex;
858 struct napi_struct napi;
860 struct delayed_work buffer_reclaim_work;
863 static inline bool qeth_card_hw_is_reachable(struct qeth_card *card)
865 return card->state == CARD_STATE_SOFTSETUP;
868 static inline bool qeth_use_tx_irqs(struct qeth_card *card)
870 return !IS_IQD(card);
873 static inline void qeth_unlock_channel(struct qeth_card *card,
874 struct qeth_channel *channel)
876 xchg(&channel->active_cmd, NULL);
877 wake_up(&card->wait_q);
880 static inline bool qeth_trylock_channel(struct qeth_channel *channel,
881 struct qeth_cmd_buffer *cmd)
883 return cmpxchg(&channel->active_cmd, NULL, cmd) == NULL;
886 struct qeth_trap_id {
894 static inline bool qeth_uses_tx_prio_queueing(struct qeth_card *card)
896 return card->qdio.do_prio_queueing != QETH_NO_PRIO_QUEUEING;
899 static inline unsigned int qeth_tx_actual_queues(struct qeth_card *card)
901 struct qeth_priv *priv = netdev_priv(card->dev);
903 if (qeth_uses_tx_prio_queueing(card))
904 return min(card->dev->num_tx_queues, card->qdio.no_out_queues);
906 return min(priv->tx_wanted_queues, card->qdio.no_out_queues);
909 static inline u16 qeth_iqd_translate_txq(struct net_device *dev, u16 txq)
911 if (txq == QETH_IQD_MCAST_TXQ)
912 return dev->num_tx_queues - 1;
913 if (txq == dev->num_tx_queues - 1)
914 return QETH_IQD_MCAST_TXQ;
918 static inline bool qeth_iqd_is_mcast_queue(struct qeth_card *card,
919 struct qeth_qdio_out_q *queue)
921 return qeth_iqd_translate_txq(card->dev, queue->queue_no) ==
925 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf,
926 unsigned int elements)
930 for (i = 0; i < elements; i++)
931 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element));
932 buf->element[14].sflags = 0;
933 buf->element[15].sflags = 0;
937 * qeth_get_elements_for_range() - find number of SBALEs to cover range.
938 * @start: Start of the address range.
939 * @end: Address after the end of the range.
941 * Returns the number of pages, and thus QDIO buffer elements, needed to cover
942 * the specified address range.
944 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
946 return PFN_UP(end) - PFN_DOWN(start);
949 static inline int qeth_get_ether_cast_type(struct sk_buff *skb)
951 u8 *addr = eth_hdr(skb)->h_dest;
953 if (is_multicast_ether_addr(addr))
954 return is_broadcast_ether_addr(addr) ? RTN_BROADCAST :
959 static inline struct dst_entry *qeth_dst_check_rcu(struct sk_buff *skb,
962 struct dst_entry *dst = skb_dst(skb);
965 rt = (struct rt6_info *) dst;
967 if (proto == htons(ETH_P_IPV6))
968 dst = dst_check(dst, rt6_get_cookie(rt));
970 dst = dst_check(dst, 0);
976 static inline __be32 qeth_next_hop_v4_rcu(struct sk_buff *skb,
977 struct dst_entry *dst)
979 struct rtable *rt = (struct rtable *) dst;
981 return (rt) ? rt_nexthop(rt, ip_hdr(skb)->daddr) : ip_hdr(skb)->daddr;
984 static inline struct in6_addr *qeth_next_hop_v6_rcu(struct sk_buff *skb,
985 struct dst_entry *dst)
987 struct rt6_info *rt = (struct rt6_info *) dst;
989 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
990 return &rt->rt6i_gateway;
992 return &ipv6_hdr(skb)->daddr;
995 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, __be16 proto)
997 *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
998 if ((proto == htons(ETH_P_IP) && ip_hdr(skb)->protocol == IPPROTO_UDP) ||
999 (proto == htons(ETH_P_IPV6) && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP))
1000 *flags |= QETH_HDR_EXT_UDP;
1003 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
1004 struct qeth_buffer_pool_entry *entry)
1006 list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
1009 static inline int qeth_is_diagass_supported(struct qeth_card *card,
1010 enum qeth_diags_cmds cmd)
1012 return card->info.diagass_support & (__u32)cmd;
1015 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
1016 enum qeth_ipa_funcs ipa_func,
1017 u16 cmd_code, u32 *data,
1018 enum qeth_prot_versions prot);
1020 static inline int qeth_send_simple_setassparms(struct qeth_card *card,
1021 enum qeth_ipa_funcs ipa_func,
1022 u16 cmd_code, u32 *data)
1024 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
1025 data, QETH_PROT_IPV4);
1028 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
1029 enum qeth_ipa_funcs ipa_func,
1030 u16 cmd_code, u32 *data)
1032 return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
1033 data, QETH_PROT_IPV6);
1036 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb);
1038 extern const struct qeth_discipline qeth_l2_discipline;
1039 extern const struct qeth_discipline qeth_l3_discipline;
1040 extern const struct ethtool_ops qeth_ethtool_ops;
1041 extern const struct attribute_group *qeth_dev_groups[];
1043 const char *qeth_get_cardname_short(struct qeth_card *);
1044 int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count);
1045 int qeth_setup_discipline(struct qeth_card *card, enum qeth_discipline_id disc);
1046 void qeth_remove_discipline(struct qeth_card *card);
1048 /* exports for qeth discipline device drivers */
1049 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
1051 struct net_device *qeth_clone_netdev(struct net_device *orig);
1052 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
1053 int clear_start_mask);
1054 int qeth_threads_running(struct qeth_card *, unsigned long);
1055 int qeth_set_offline(struct qeth_card *card, const struct qeth_discipline *disc,
1058 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
1060 (struct qeth_card *, struct qeth_reply *, unsigned long),
1062 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
1063 enum qeth_ipa_cmds cmd_code,
1064 enum qeth_prot_versions prot,
1065 unsigned int data_length);
1066 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
1067 enum qeth_ipa_funcs ipa_func,
1069 unsigned int data_length,
1070 enum qeth_prot_versions prot);
1071 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
1072 enum qeth_diags_cmds sub_cmd,
1073 unsigned int data_length);
1075 int qeth_schedule_recovery(struct qeth_card *card);
1076 int qeth_poll(struct napi_struct *napi, int budget);
1077 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable);
1078 int qeth_setadpparms_change_macaddr(struct qeth_card *);
1079 void qeth_tx_timeout(struct net_device *, unsigned int txqueue);
1080 int qeth_query_switch_attributes(struct qeth_card *card,
1081 struct qeth_switch_info *sw_info);
1082 int qeth_query_card_info(struct qeth_card *card,
1083 struct qeth_link_info *link_info);
1084 int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
1085 enum qeth_ipa_isolation_modes mode);
1087 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
1088 int qeth_siocdevprivate(struct net_device *dev, struct ifreq *rq,
1089 void __user *data, int cmd);
1090 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
1091 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
1092 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
1093 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
1094 int qeth_set_features(struct net_device *, netdev_features_t);
1095 void qeth_enable_hw_features(struct net_device *dev);
1096 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
1097 netdev_features_t qeth_features_check(struct sk_buff *skb,
1098 struct net_device *dev,
1099 netdev_features_t features);
1100 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats);
1101 int qeth_set_real_num_tx_queues(struct qeth_card *card, unsigned int count);
1102 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1103 u8 cast_type, struct net_device *sb_dev);
1104 int qeth_open(struct net_device *dev);
1105 int qeth_stop(struct net_device *dev);
1107 int qeth_vm_request_mac(struct qeth_card *card);
1108 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
1109 struct qeth_qdio_out_q *queue, __be16 proto,
1110 void (*fill_header)(struct qeth_qdio_out_q *queue,
1111 struct qeth_hdr *hdr, struct sk_buff *skb,
1112 __be16 proto, unsigned int data_len));
1114 #endif /* __QETH_CORE_H__ */