[PATCH 14 of 20] ipath - infiniband verbs header

Bryan O'Sullivan
2005-12-29T00:39:41Z

Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>

diff -r f9bcd9de3548 -r 26993cb5faee drivers/infiniband/hw/ipath/ipath_verbs.h
--- /dev/null Thu Jan 1 00:00:00 1970 +0000
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.h Wed Dec 28 14:19:43 2005 -0800
@@ -0,0 +1,532 @@
+/*
+ * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Patent licenses, if any, provided herein do not apply to
+ * combinations of this program with other software, or any other
+ * product whatsoever.
+ */
+
+#ifndef IPATH_VERBS_H
+#define IPATH_VERBS_H
+
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <rdma/ib_pack.h>
+
+#include "ipath_kernel.h"
+#include "verbs_debug.h"
+
+#define CTL_IPATH_VERBS 0x70736e68 /* "spin" as a hex value, top level */
+#define CTL_IPATH_VERBS_FAULT 1
+#define CTL_IPATH_VERBS_DEBUG 2
+
+#define QPN_MAX (1 << 24)
+#define QPNMAP_ENTRIES (QPN_MAX / PAGE_SIZE / BITS_PER_BYTE)
+
+/*
+ * Increment this value if any changes that break userspace ABI
+ * compatibility are made.
+ */
+#define IPATH_UVERBS_ABI_VERSION 1
+
+/*
+ * Define an ib_cq_notify value that is not valid so we know when CQ
+ * notifications are armed.
+ */
+#define IB_CQ_NONE (IB_CQ_NEXT_COMP + 1)
+
+enum {
+ IB_RNR_NAK = 0x20,
+
+ IB_NAK_PSN_ERROR = 0x60,
+ IB_NAK_INVALID_REQUEST = 0x61,
+ IB_NAK_REMOTE_ACCESS_ERROR = 0x62,
+ IB_NAK_REMOTE_OPERATIONAL_ERROR = 0x63,
+ IB_NAK_INVALID_RD_REQUEST = 0x64
+};
+
+/* IB Performance Manager status values */
+enum {
+ IB_PMA_SAMPLE_STATUS_DONE = 0x00,
+ IB_PMA_SAMPLE_STATUS_STARTED = 0x01,
+ IB_PMA_SAMPLE_STATUS_RUNNING = 0x02
+};
+
+/* Mandatory IB performance counter select values. */
+#define IB_PMA_PORT_XMIT_DATA __constant_htons(0x0001)
+#define IB_PMA_PORT_RCV_DATA __constant_htons(0x0002)
+#define IB_PMA_PORT_XMIT_PKTS __constant_htons(0x0003)
+#define IB_PMA_PORT_RCV_PKTS __constant_htons(0x0004)
+#define IB_PMA_PORT_XMIT_WAIT __constant_htons(0x0005)
+
+struct ib_reth {
+ u64 vaddr;
+ u32 rkey;
+ u32 length;
+} __attribute__ ((packed));
+
+struct ib_atomic_eth {
+ u64 vaddr;
+ u32 rkey;
+ u64 swap_data;
+ u64 compare_data;
+} __attribute__ ((packed));
+
+struct ipath_other_headers {
+ u32 bth[3];
+ union {
+ struct {
+ u32 deth[2];
+ u32 imm_data;
+ } ud;
+ struct {
+ struct ib_reth reth;
+ u32 imm_data;
+ } rc;
+ struct {
+ u32 aeth;
+ u64 atomic_ack_eth;
+ } at;
+ u32 imm_data;
+ u32 aeth;
+ struct ib_atomic_eth atomic_eth;
+ } u;
+} __attribute__ ((packed));
+
+/*
+ * Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes long
+ * (72 w/ imm_data).
+ * Only the first 56 bytes of the IB header will be in the
+ * eager header buffer. The remaining 12 or 16 bytes are in the data buffer.
+ */
+struct ipath_ib_header {
+ u16 lrh[4];
+ union {
+ struct {
+ struct ib_grh grh;
+ struct ipath_other_headers oth;
+ } l;
+ struct ipath_other_headers oth;
+ } u;
+} __attribute__ ((packed));
+
+/*
+ * There is one struct ipath_mcast for each multicast GID.
+ * All attached QPs are then stored as a list of
+ * struct ipath_mcast_qp.
+ */
+struct ipath_mcast_qp {
+ struct list_head list;
+ struct ipath_qp *qp;
+};
+
+struct ipath_mcast {
+ struct rb_node rb_node;
+ union ib_gid mgid;
+ struct list_head qp_list;
+ wait_queue_head_t wait;
+ atomic_t refcount;
+};
+
+/* Memory region */
+struct ipath_mr {
+ struct ib_mr ibmr;
+ struct ipath_mregion mr; /* must be last */
+};
+
+/* Fast memory region */
+struct ipath_fmr {
+ struct ib_fmr ibfmr;
+ u8 page_size;
+ struct ipath_mregion mr; /* must be last */
+};
+
+/* Protection domain */
+struct ipath_pd {
+ struct ib_pd ibpd;
+ int user; /* non-zero if created from user space */
+};
+
+/* Address Handle */
+struct ipath_ah {
+ struct ib_ah ibah;
+ struct ib_ah_attr attr;
+};
+
+/*
+ * Quick description of our CQ/QP locking scheme:
+ *
+ * We have one global lock that protects dev->cq/qp_table. Each
+ * struct ipath_cq/qp also has its own lock. An individual qp lock
+ * may be taken inside of an individual cq lock. Both cqs attached to
+ * a qp may be locked, with the send cq locked first. No other
+ * nesting should be done.
+ *
+ * Each struct ipath_cq/qp also has an atomic_t ref count. The
+ * pointer from the cq/qp_table to the struct counts as one reference.
+ * This reference also is good for access through the consumer API, so
+ * modifying the CQ/QP etc doesn't need to take another reference.
+ * Access because of a completion being polled does need a reference.
+ *
+ * Finally, each struct ipath_cq/qp has a wait_queue_head_t for the
+ * destroy function to sleep on.
+ *
+ * This means that access from the consumer API requires nothing but
+ * taking the struct's lock.
+ *
+ * Access because of a completion event should go as follows:
+ * - lock cq/qp_table and look up struct
+ * - increment ref count in struct
+ * - drop cq/qp_table lock
+ * - lock struct, do your thing, and unlock struct
+ * - decrement ref count; if zero, wake up waiters
+ *
+ * To destroy a CQ/QP, we can do the following:
+ * - lock cq/qp_table, remove pointer, unlock cq/qp_table lock
+ * - decrement ref count
+ * - wait_event until ref count is zero
+ *
+ * It is the consumer's responsibilty to make sure that no QP
+ * operations (WQE posting or state modification) are pending when the
+ * QP is destroyed. Also, the consumer must make sure that calls to
+ * qp_modify are serialized.
+ *
+ * Possible optimizations (wait for profile data to see if/where we
+ * have locks bouncing between CPUs):
+ * - split cq/qp table lock into n separate (cache-aligned) locks,
+ * indexed (say) by the page in the table
+ */
+
+struct ipath_cq {
+ struct ib_cq ibcq;
+ struct tasklet_struct comptask;
+ spinlock_t lock;
+ u8 notify;
+ u8 triggered;
+ u32 head; /* new records added to the head */
+ u32 tail; /* poll_cq() reads from here. */
+ struct ib_wc queue[1]; /* this is actually ibcq.cqe + 1 */
+};
+
+/*
+ * Send work request queue entry.
+ * The size of the sg_list is determined when the QP is created and stored
+ * in qp->s_max_sge.
+ */
+struct ipath_swqe {
+ struct ib_send_wr wr; /* don't use wr.sg_list */
+ u32 psn; /* first packet sequence number */
+ u32 lpsn; /* last packet sequence number */
+ u32 ssn; /* send sequence number */
+ u32 length; /* total length of data in sg_list */
+ struct ipath_sge sg_list[0];
+};
+
+/*
+ * Receive work request queue entry.
+ * The size of the sg_list is determined when the QP is created and stored
+ * in qp->r_max_sge.
+ */
+struct ipath_rwqe {
+ u64 wr_id;
+ u32 length; /* total length of data in sg_list */
+ u8 num_sge;
+ struct ipath_sge sg_list[0];
+};
+
+struct ipath_rq {
+ spinlock_t lock;
+ u32 head; /* new work requests posted to the head */
+ u32 tail; /* receives pull requests from here. */
+ u32 size; /* size of RWQE array */
+ u8 max_sge;
+ struct ipath_rwqe *wq; /* RWQE array */
+};
+
+struct ipath_srq {
+ struct ib_srq ibsrq;
+ struct ipath_rq rq;
+ u32 limit; /* send signal when number of RWQEs < limit */
+};
+
+/*
+ * Variables prefixed with s_ are for the requester (sender).
+ * Variables prefixed with r_ are for the responder (receiver).
+ * Variables prefixed with ack_ are for responder replies.
+ *
+ * Common variables are protected by both r_rq.lock and s_lock in that order
+ * which only happens in modify_qp() or changing the QP 'state'.
+ */
+struct ipath_qp {
+ struct ib_qp ibqp;
+ struct ipath_qp *next; /* link list for QPN hash table */
+ struct list_head piowait; /* link for wait PIO buf */
+ struct list_head timerwait; /* link for waiting for timeouts */
+ struct ib_ah_attr remote_ah_attr;
+ struct ipath_ib_header s_hdr; /* next packet header to send */
+ atomic_t refcount;
+ wait_queue_head_t wait;
+ struct tasklet_struct s_task;
+ struct ipath_sge_state *s_cur_sge;
+ struct ipath_sge_state s_sge; /* current send request data */
+ struct ipath_sge_state s_rdma_sge; /* current RDMA read send data */
+ struct ipath_sge_state r_sge; /* current receive data */
+ spinlock_t s_lock;
+ int s_flags;
+ u32 s_hdrwords; /* size of s_hdr in 32 bit words */
+ u32 s_cur_size; /* size of send packet in bytes */
+ u32 s_len; /* total length of s_sge */
+ u32 s_rdma_len; /* total length of s_rdma_sge */
+ u32 s_next_psn; /* PSN for next request */
+ u32 s_last_psn; /* last response PSN processed */
+ u32 s_psn; /* current packet sequence number */
+ u32 s_rnr_timeout; /* number of milliseconds for RNR timeout */
+ u32 s_ack_psn; /* PSN for next ACK or RDMA_READ */
+ u64 s_ack_atomic; /* data for atomic ACK */
+ u64 r_wr_id; /* ID for current receive WQE */
+ u64 r_atomic_data; /* data for last atomic op */
+ u32 r_atomic_psn; /* PSN of last atomic op */
+ u32 r_len; /* total length of r_sge */
+ u32 r_rcv_len; /* receive data len processed */
+ u32 r_psn; /* expected rcv packet sequence number */
+ u8 state; /* QP state */
+ u8 s_state; /* opcode of last packet sent */
+ u8 s_ack_state; /* opcode of packet to ACK */
+ u8 s_nak_state; /* non-zero if NAK is pending */
+ u8 r_state; /* opcode of last packet received */
+ u8 r_reuse_sge; /* for UC receive errors */
+ u8 r_sge_inx; /* current index into sg_list */
+ u8 s_max_sge; /* size of s_wq->sg_list */
+ u8 qp_access_flags;
+ u8 s_retry_cnt; /* number of times to retry */
+ u8 s_rnr_retry_cnt;
+ u8 s_min_rnr_timer;
+ u8 s_retry; /* requester retry counter */
+ u8 s_rnr_retry; /* requester RNR retry counter */
+ u8 s_pkey_index; /* PKEY index to use */
+ enum ib_mtu path_mtu;
+ atomic_t msn; /* message sequence number */
+ u32 remote_qpn;
+ u32 qkey; /* QKEY for this QP (for UD or RD) */
+ u32 s_size; /* send work queue size */
+ u32 s_head; /* new entries added here */
+ u32 s_tail; /* next entry to process */
+ u32 s_cur; /* current work queue entry */
+ u32 s_last; /* last un-ACK'ed entry */
+ u32 s_ssn; /* SSN of tail entry */
+ u32 s_lsn; /* limit sequence number (credit) */
+ struct ipath_swqe *s_wq; /* send work queue */
+ struct ipath_rq r_rq; /* receive work queue */
+};
+
+/*
+ * Bit definitions for s_flags.
+ */
+#define IPATH_S_BUSY 0
+#define IPATH_S_SIGNAL_REQ_WR 1
+
+/*
+ * Since struct ipath_swqe is not a fixed size, we can't simply index into
+ * struct ipath_qp.s_wq. This function does the array index computation.
+ */
+static inline struct ipath_swqe *get_swqe_ptr(struct ipath_qp *qp, unsigned n)
+{
+ return (struct ipath_swqe *)((char *) qp->s_wq +
+ (sizeof(struct ipath_swqe) +
+ qp->s_max_sge * sizeof(struct ipath_sge)) * n);
+}
+
+/*
+ * Since struct ipath_rwqe is not a fixed size, we can't simply index into
+ * struct ipath_rq.wq. This function does the array index computation.
+ */
+static inline struct ipath_rwqe *get_rwqe_ptr(struct ipath_rq *rq, unsigned n)
+{
+ return (struct ipath_rwqe *)((char *) rq->wq +
+ (sizeof(struct ipath_rwqe) +
+ rq->max_sge * sizeof(struct ipath_sge)) * n);
+}
+
+/*
+ * QPN-map pages start out as NULL, they get allocated upon
+ * first use and are never deallocated. This way,
+ * large bitmaps are not allocated unless large numbers of QPs are used.
+ */
+struct qpn_map {
+ atomic_t n_free;
+ void *page;
+};
+
+struct ipath_qp_table {
+ spinlock_t lock;
+ u32 last; /* last QP number allocated */
+ u32 max; /* size of the hash table */
+ u32 nmaps; /* size of the map table */
+ struct ipath_qp **table;
+ struct qpn_map map[QPNMAP_ENTRIES]; /* bit map of free numbers */
+};
+
+struct ipath_lkey_table {
+ spinlock_t lock;
+ u32 next; /* next unused index (speeds search) */
+ u32 gen; /* generation count */
+ u32 max; /* size of the table */
+ struct ipath_mregion **table;
+};
+
+struct ipath_opcode_stats {
+ u64 n_packets; /* number of packets */
+ u64 n_bytes; /* total number of bytes */
+};
+
+struct ipath_ibdev {
+ struct ib_device ibdev;
+ ipath_type ib_unit; /* This is the device number */
+ u16 sm_lid; /* in host order */
+ u8 sm_sl;
+ u8 mkeyprot_resv_lmc;
+ unsigned long mkey_lease_timeout; /* non-zero when timer is set */
+
+ /* The following fields are really per port. */
+ struct ipath_qp_table qp_table;
+ struct ipath_lkey_table lk_table;
+ struct list_head pending[3]; /* FIFO of QPs waiting for ACKs */
+ struct list_head piowait; /* list for wait PIO buf */
+ struct list_head rnrwait; /* list of QPs waiting for RNR timer */
+ spinlock_t pending_lock;
+ __be64 sys_image_guid; /* in network order */
+ __be64 gid_prefix; /* in network order */
+ __be64 mkey;
+ u64 ipath_sword; /* total dwords sent (sample result) */
+ u64 ipath_rword; /* total dwords received (sample result) */
+ u64 ipath_spkts; /* total packets sent (sample result) */
+ u64 ipath_rpkts; /* total packets received (sample result) */
+ u64 n_unicast_xmit; /* total unicast packets sent */
+ u64 n_unicast_rcv; /* total unicast packets received */
+ u64 n_multicast_xmit; /* total multicast packets sent */
+ u64 n_multicast_rcv; /* total multicast packets received */
+ u64 n_symbol_error_counter; /* starting count for PMA */
+ u64 n_link_error_recovery_counter; /* starting count for PMA */
+ u64 n_link_downed_counter; /* starting count for PMA */
+ u64 n_port_rcv_errors; /* starting count for PMA */
+ u64 n_port_rcv_remphys_errors; /* starting count for PMA */
+ u64 n_port_xmit_discards; /* starting count for PMA */
+ u64 n_port_xmit_data; /* starting count for PMA */
+ u64 n_port_rcv_data; /* starting count for PMA */
+ u64 n_port_xmit_packets; /* starting count for PMA */
+ u64 n_port_rcv_packets; /* starting count for PMA */
+ u32 n_rc_resends;
+ u32 n_rc_acks;
+ u32 n_rc_qacks;
+ u32 n_seq_naks;
+ u32 n_rdma_seq;
+ u32 n_rnr_naks;
+ u32 n_other_naks;
+ u32 n_timeouts;
+ u32 n_pkt_drops;
+ u32 n_wqe_errs;
+ u32 n_rdma_dup_busy;
+ u32 n_piowait;
+ u32 n_no_piobuf;
+ u32 port_cap_flags;
+ u32 pma_sample_start;
+ u32 pma_sample_interval;
+ __be16 pma_counter_select[5];
+ u16 pma_tag;
+ u16 qkey_violations;
+ u16 mkey_violations;
+ u16 mkey_lease_period;
+ u16 pending_index; /* which pending queue is active */
+ u8 pma_sample_status;
+ u8 subnet_timeout;
+ struct ipath_opcode_stats opstats[128];
+};
+
+struct ipath_ucontext {
+ struct ib_ucontext ibucontext;
+};
+
+static inline struct ipath_mr *to_imr(struct ib_mr *ibmr)
+{
+ return container_of(ibmr, struct ipath_mr, ibmr);
+}
+
+static inline struct ipath_fmr *to_ifmr(struct ib_fmr *ibfmr)
+{
+ return container_of(ibfmr, struct ipath_fmr, ibfmr);
+}
+
+static inline struct ipath_pd *to_ipd(struct ib_pd *ibpd)
+{
+ return container_of(ibpd, struct ipath_pd, ibpd);
+}
+
+static inline struct ipath_ah *to_iah(struct ib_ah *ibah)
+{
+ return container_of(ibah, struct ipath_ah, ibah);
+}
+
+static inline struct ipath_cq *to_icq(struct ib_cq *ibcq)
+{
+ return container_of(ibcq, struct ipath_cq, ibcq);
+}
+
+static inline struct ipath_srq *to_isrq(struct ib_srq *ibsrq)
+{
+ return container_of(ibsrq, struct ipath_srq, ibsrq);
+}
+
+static inline struct ipath_qp *to_iqp(struct ib_qp *ibqp)
+{
+ return container_of(ibqp, struct ipath_qp, ibqp);
+}
+
+static inline struct ipath_ibdev *to_idev(struct ib_device *ibdev)
+{
+ return container_of(ibdev, struct ipath_ibdev, ibdev);
+}
+
+int ipath_process_mad(struct ib_device *ibdev,
+ int mad_flags,
+ u8 port_num,
+ struct ib_wc *in_wc,
+ struct ib_grh *in_grh,
+ struct ib_mad *in_mad, struct ib_mad *out_mad);
+
+static inline struct ipath_ucontext *to_iucontext(struct ib_ucontext
+ *ibucontext)
+{
+ return container_of(ibucontext, struct ipath_ucontext, ibucontext);
+}
+
+#endif /* IPATH_VERBS_H */
diff -r f9bcd9de3548 -r 26993cb5faee drivers/infiniband/hw/ipath/verbs_debug.h
--- /dev/null Thu Jan 1 00:00:00 1970 +0000
+++ b/drivers/infiniband/hw/ipath/verbs_debug.h Wed Dec 28 14:19:43 2005 -0800
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Patent licenses, if any, provided herein do not apply to
+ * combinations of this program with other software, or any other
+ * product whatsoever.
+ */
+
+#ifndef _VERBS_DEBUG_H
+#define _VERBS_DEBUG_H
+
+/*
+ * This file contains tracing code for the ib_ipath kernel module.
+ */
+#ifndef _VERBS_DEBUGGING /* tracing enabled or not */
+#define _VERBS_DEBUGGING 1
+#endif
+
+extern unsigned ib_ipath_debug;
+
+#define _VERBS_ERROR(fmt,...) \
+ do { \
+ printk(KERN_ERR "%s: " fmt, "ib_ipath", ##__VA_ARGS__); \
+ } while(0)
+
+#define _VERBS_UNIT_ERROR(unit,fmt,...) \
+ do { \
+ printk(KERN_ERR "%s: " fmt, "ib_ipath", ##__VA_ARGS__); \
+ } while(0)
+
+#if _VERBS_DEBUGGING
+
+/*
+ * Mask values for debugging. The scheme allows us to compile out any of
+ * the debug tracing stuff, and if compiled in, to enable or disable dynamically
+ * This can be set at modprobe time also:
+ * modprobe ib_path ib_ipath_debug=3
+ */
+
+#define __VERBS_INFO 0x1 /* generic low verbosity stuff */
+#define __VERBS_DBG 0x2 /* generic debug */
+#define __VERBS_VDBG 0x4 /* verbose debug */
+#define __VERBS_SMADBG 0x8000 /* sma packet debug */
+
+#define _VERBS_INFO(fmt,...) \
+ do { \
+ if(unlikely(ib_ipath_debug&__VERBS_INFO)) \
+ printk(KERN_INFO "%s: " fmt,"ib_ipath",##__VA_ARGS__); \
+ } while(0)
+
+#define _VERBS_DBG(fmt,...) \
+ do { \
+ if(unlikely(ib_ipath_debug&__VERBS_DBG)) \
+ printk(KERN_DEBUG "%s: " fmt, __func__,##__VA_ARGS__); \
+ } while(0)
+
+#define _VERBS_VDBG(fmt,...) \
+ do { \
+ if(unlikely(ib_ipath_debug&__VERBS_VDBG)) \
+ printk(KERN_DEBUG "%s: " fmt, __func__,##__VA_ARGS__); \
+ } while(0)
+
+#define _VERBS_SMADBG(fmt,...) \
+ do { \
+ if(unlikely(ib_ipath_debug&__VERBS_SMADBG)) \
+ printk(KERN_DEBUG "%s: " fmt, __func__,##__VA_ARGS__); \
+ } while(0)
+
+#else /* ! _VERBS_DEBUGGING */
+
+#define _VERBS_INFO(fmt,...)
+#define _VERBS_DBG(fmt,...)
+#define _VERBS_VDBG(fmt,...)
+#define _VERBS_SMADBG(fmt,...)
+
+#endif /* _VERBS_DEBUGGING */
+
+#endif /* _VERBS_DEBUG_H */