#include <linux/list.h>
#include <linux/kmod.h>
#include <linux/sysctl.h>
+#include <linux/random.h>
-#define DEBUG_SUBSYSTEM S_IBNAL
+#include <net/sock.h>
+#include <linux/in.h>
-#define IBNAL_CHECK_ADVERT
+#define DEBUG_SUBSYSTEM S_NAL
#include <libcfs/kp30.h>
#include <portals/p30.h>
#include <portals/lib-p30.h>
#include <portals/nal.h>
-#include <vverbs.h>
-#include <sa-mads.h>
-#include <ib-cm.h>
-#include <gsi.h>
-
-#if 0
-#undef CDEBUG
-#define CDEBUG(mask, format, a...) printk(KERN_INFO "%s:%d - " format, __func__, __LINE__,##a)
+/* CPU_{L,B}E #defines needed by Voltaire headers */
+#include <asm/byteorder.h>
+#ifdef __BIG_ENDIAN__
+#define CPU_BE 1
+#define CPU_LE 0
#endif
-
-#ifdef __CHECKER__
-#undef CDEBUG
-#undef CERROR
-#define CDEBUG(a...)
-#define CERROR(a...)
+#ifdef __LITTLE_ENDIAN__
+#define CPU_BE 0
+#define CPU_LE 1
#endif
-#define GCC_VERSION (__GNUC__ * 10000 \
- + __GNUC_MINOR__ * 100 \
- + __GNUC_PATCHLEVEL__)
+#include <vverbs.h>
+#include <ib-cm.h>
+#include <ibat.h>
-/* Test for GCC > 3.2.2 */
-#if GCC_VERSION <= 30202
-/* GCC 3.2.2, and presumably several versions before it, will
- * miscompile this driver. See
- * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9853. */
+/* GCC 3.2.2, miscompiles this driver.
+ * See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9853. */
+#define GCC_VERSION ((__GNUC__*100 + __GNUC_MINOR__)*100 + __GNUC_PATCHLEVEL__)
+#if GCC_VERSION < 30203
#error Invalid GCC version. Must use GCC >= 3.2.3
#endif
-#define IBNAL_SERVICE_NAME "vibnal"
-#define IBNAL_SERVICE_NUMBER 0x11b9a2 /* TODO */
-
#if CONFIG_SMP
# define IBNAL_N_SCHED num_online_cpus() /* # schedulers */
#else
# define IBNAL_N_SCHED 1 /* # schedulers */
#endif
+/* sdp-connection.c */
+#define IBNAL_QKEY 0
+#define IBNAL_PKEY 0xffff
+#define IBNAL_PKEY_IDX 0
+#define IBNAL_SGID_IDX 0
+#define IBNAL_SERVICE_LEVEL 0
+#define IBNAL_STATIC_RATE 0
+#define IBNAL_RETRY_CNT 7
+#define IBNAL_RNR_CNT 7
+#define IBNAL_EE_FLOW_CNT 1
+#define IBNAL_LOCAL_SUB 1
+#define IBNAL_TRAFFIC_CLASS 0
+#define IBNAL_SOURCE_PATH_BIT 0
+#define IBNAL_OUS_DST_RD 32
+#define IBNAL_IB_MTU vv_mtu_1024
+
+/* sdp-hca-params.h */
+#define PATH_RATE_2_5GB 2
+#define MLX_IPD_1x 1
+#define MLX_IPD_4x 0
+#define IBNAL_R_2_STATIC_RATE(r) ((r) == PATH_RATE_2_5GB ? MLX_IPD_1x : MLX_IPD_4x)
+
+/* other low-level IB constants */
+#define IBNAL_LOCAL_ACK_TIMEOUT 0x12
+#define IBNAL_PKT_LIFETIME 5
+#define IBNAL_ARB_INITIATOR_DEPTH 0
+#define IBNAL_ARB_RESP_RES 0
+#define IBNAL_FAILOVER_ACCEPTED 0
+#define IBNAL_SERVICE_NUMBER 0x11b9a2 /* Fixed service number */
+
#define IBNAL_MIN_RECONNECT_INTERVAL HZ /* first failed connection retry... */
#define IBNAL_MAX_RECONNECT_INTERVAL (60*HZ) /* ...exponentially increasing to this */
-#define IBNAL_MSG_SIZE (4<<10) /* max size of queued messages (inc hdr) */
-
-#define IBNAL_MSG_QUEUE_SIZE 8 /* # messages/RDMAs in-flight */
-#define IBNAL_CREDIT_HIGHWATER 7 /* when to eagerly return credits */
+#define IBNAL_MSG_SIZE (4<<10) /* max size of queued messages (inc hdr) */
-/* 7 indicates infinite retry attempts, Infinicon recommended 5 */
-#define IBNAL_RETRY 5 /* # times to retry */
-#define IBNAL_RNR_RETRY 5 /* */
-#define IBNAL_CM_RETRY 5 /* # times to retry connection */
+#define IBNAL_MSG_QUEUE_SIZE 8 /* # messages/RDMAs in-flight */
+#define IBNAL_CREDIT_HIGHWATER 7 /* when to eagerly return credits */
-#define IBNAL_FLOW_CONTROL 1
-#define IBNAL_ACK_TIMEOUT 20 /* supposedly 4 secs */
+#define IBNAL_NTX 64 /* # tx descs */
+#define IBNAL_NTX_NBLK 128 /* # reserved tx descs */
+/* reduced from 256 to ensure we register < 255 pages per region.
+ * this can change if we register all memory. */
-#define IBNAL_NTX 64 /* # tx descs */
-/* this had to be dropped down so that we only register < 255 pages per
- * region. this will change if we register all memory. */
-#define IBNAL_NTX_NBLK 128 /* # reserved tx descs */
+#define IBNAL_PEER_HASH_SIZE 101 /* # peer lists */
-#define IBNAL_PEER_HASH_SIZE 101 /* # peer lists */
+#define IBNAL_RESCHED 100 /* # scheduler loops before reschedule */
-#define IBNAL_RESCHED 100 /* # scheduler loops before reschedule */
+#define IBNAL_CONCURRENT_PEERS 1000 /* # nodes all talking at once to me */
-#define IBNAL_CONCURRENT_PEERS 1000 /* # nodes all talking at once to me */
+#define IBNAL_RDMA_BASE 0x0eeb0000
+#define IBNAL_CKSUM 0
+#define IBNAL_WHOLE_MEM 1
+#if !IBNAL_WHOLE_MEM
+# error "incompatible with voltaire adaptor-tavor (REGISTER_RAM_IN_ONE_PHY_MR)"
+#endif
/* default vals for runtime tunables */
-#define IBNAL_IO_TIMEOUT 50 /* default comms timeout (seconds) */
+#define IBNAL_IO_TIMEOUT 50 /* default comms timeout (seconds) */
/************************/
/* derived constants... */
#define IBNAL_TX_MSG_BYTES (IBNAL_TX_MSGS * IBNAL_MSG_SIZE)
#define IBNAL_TX_MSG_PAGES ((IBNAL_TX_MSG_BYTES + PAGE_SIZE - 1)/PAGE_SIZE)
-#define IBNAL_TX_MAX_SG (PTL_MD_MAX_IOV + 1)
+#if IBNAL_WHOLE_MEM
+# define IBNAL_MAX_RDMA_FRAGS PTL_MD_MAX_IOV
+#else
+# define IBNAL_MAX_RDMA_FRAGS 1
+#endif
/* RX messages (per connection) */
#define IBNAL_RX_MSGS IBNAL_MSG_QUEUE_SIZE
#define IBNAL_RX_MSG_BYTES (IBNAL_RX_MSGS * IBNAL_MSG_SIZE)
#define IBNAL_RX_MSG_PAGES ((IBNAL_RX_MSG_BYTES + PAGE_SIZE - 1)/PAGE_SIZE)
-
-/* we may have up to 2 completions per transmit +
- 1 completion per receive, per connection */
-#define IBNAL_CQ_ENTRIES ((2*IBNAL_TX_MSGS) + \
- (IBNAL_RX_MSGS * IBNAL_CONCURRENT_PEERS))
-
-#define IBNAL_RDMA_BASE 0x0eeb0000
-#define IBNAL_FMR 0
-#define IBNAL_WHOLE_MEM 1
-#define IBNAL_CKSUM 0
-
-/* Starting sequence number. */
-#define IBNAL_STARTING_PSN 0x465A
-
-/* Timeout for SA requests, in seconds */
-#define GSI_TIMEOUT 5
-#define GSI_RETRY 10
+#define IBNAL_CQ_ENTRIES (IBNAL_TX_MSGS * (1 + IBNAL_MAX_RDMA_FRAGS) + \
+ IBNAL_RX_MSGS * IBNAL_CONCURRENT_PEERS)
typedef struct
{
struct ctl_table_header *kib_sysctl; /* sysctl interface */
} kib_tunables_t;
-/* some of these have specific types in the stack that just map back
- * to the uFOO types, like IB_{L,R}_KEY. */
typedef struct
{
int ibp_npages; /* # pages */
__u32 md_lkey;
__u32 md_rkey;
__u64 md_addr;
-} kib_md_t __attribute__((packed));
+} kib_md_t;
typedef struct
{
- /* initialisation state. These values are sorted by their initialization order. */
- enum {
- IBNAL_INIT_NOTHING,
- IBNAL_INIT_DATA,
- IBNAL_INIT_LIB,
- IBNAL_INIT_HCA,
- IBNAL_INIT_ASYNC,
- IBNAL_INIT_PORT,
- IBNAL_INIT_GSI_POOL,
- IBNAL_INIT_GSI,
- IBNAL_INIT_PD,
-#if IBNAL_FMR
- IBNAL_INIT_FMR,
-#endif
- IBNAL_INIT_TXD,
- IBNAL_INIT_CQ,
- IBNAL_INIT_ALL,
- } kib_init;
-
+ int kib_init; /* initialisation state */
__u64 kib_incarnation; /* which one am I */
int kib_shutdown; /* shut down? */
atomic_t kib_nthreads; /* # live threads */
- __u64 kib_service_id; /* service number I listen on */
- vv_gid_t kib_port_gid; /* port GID in HOST ORDER! */
- vv_p_key_t kib_port_pkey; /* my pkey */
- ptl_nid_t kib_nid; /* my NID */
+ __u64 kib_svc_id; /* service number I listen on */
+ vv_gid_t kib_port_gid; /* device/port GID */
+ vv_p_key_t kib_port_pkey; /* device/port pkey */
+
struct semaphore kib_nid_mutex; /* serialise NID ops */
- cm_cep_handle_t kib_cep; /* connection end point */
+ cm_cep_handle_t kib_listen_handle; /* IB listen handle */
rwlock_t kib_global_lock; /* stabilize peer/conn ops */
-
+ spinlock_t kib_vverbs_lock; /* serialize vverbs calls */
+ int kib_ready; /* CQ callback fired */
+ int kib_checking_cq; /* a scheduler is checking the CQ */
+
struct list_head *kib_peers; /* hash table of all my known peers */
int kib_peer_hash_size; /* size of kib_peers */
atomic_t kib_npeers; /* # peers extant */
atomic_t kib_nconns; /* # connections extant */
- struct list_head kib_connd_conns; /* connections to progress */
- struct list_head kib_connd_peers; /* peers waiting for a connection */
- wait_queue_head_t kib_connd_waitq; /* connection daemons sleep here */
- unsigned long kib_connd_waketime; /* when connd will wake */
+ void *kib_connd; /* the connd task (serialisation assertions) */
+ struct list_head kib_connd_peers; /* peers wanting to get connected */
+ struct list_head kib_connd_pcreqs; /* passive connection requests */
+ struct list_head kib_connd_conns; /* connections to setup/teardown */
+ struct list_head kib_connd_zombies; /* connections with zero refcount */
+ wait_queue_head_t kib_connd_waitq; /* connection daemon sleeps here */
spinlock_t kib_connd_lock; /* serialise */
wait_queue_head_t kib_sched_waitq; /* schedulers sleep here */
spinlock_t kib_tx_lock; /* serialise */
vv_hca_h_t kib_hca; /* The HCA */
- vv_hca_attrib_t kib_hca_attrs; /* HCA attributes */
-
+ vv_hca_attrib_t kib_hca_attrs; /* its properties */
int kib_port; /* port on the device */
- vv_port_attrib_t kib_port_attr; /* port attributes */
+ vv_port_attrib_t kib_port_attr; /* its properties */
vv_pd_h_t kib_pd; /* protection domain */
vv_cq_h_t kib_cq; /* completion queue */
- void *kib_listen_handle; /* where I listen for connections */
-
- /* These fields are left untouched, so they can be shared. */
- union {
- cm_drequest_data_t dreq_data;
- cm_dreply_data_t drep_data;
- } cm_data;
-
- /* Send and receive MADs (service records, path records) */
- gsi_class_handle_t gsi_handle;
- gsi_dtgrm_pool_handle_t gsi_pool_handle;
- struct semaphore gsi_mutex; /* protect GSI list - TODO:spinlock instead? */
- struct list_head gsi_pending; /* pending GSI datagrams */
-
} kib_data_t;
+#define IBNAL_INIT_NOTHING 0
+#define IBNAL_INIT_DATA 1
+#define IBNAL_INIT_LIB 2
+#define IBNAL_INIT_HCA 3
+#define IBNAL_INIT_ASYNC 4
+#define IBNAL_INIT_PD 5
+#define IBNAL_INIT_TXD 6
+#define IBNAL_INIT_CQ 7
+#define IBNAL_INIT_ALL 8
+
/************************************************************************
- * Wire message structs.
+ * IB Wire message format.
* These are sent in sender's byte order (i.e. receiver flips).
- * CAVEAT EMPTOR: other structs communicated between nodes (e.g. MAD
- * private data and SM service info), is LE on the wire.
*/
-/* also kib_md_t above */
-
-typedef struct
+typedef struct kib_connparams
{
- __u32 rd_nob; /* # of bytes */
- __u64 rd_addr; /* remote io vaddr */
-} kib_rdma_desc_t __attribute__((packed));
+ __u32 ibcp_queue_depth;
+ __u32 ibcp_max_msg_size;
+ __u32 ibcp_max_frags;
+} kib_connparams_t __attribute__((packed));
typedef struct
{
char ibim_payload[0]; /* piggy-backed payload */
} kib_immediate_msg_t __attribute__((packed));
-/* these arrays serve two purposes during rdma. they are built on the passive
- * side and sent to the active side as remote arguments. On the active side
- * the descs are used as a data structure on the way to local gather items.
- * the different roles result in split local/remote meaning of desc->rd_key */
+/* YEUCH! the __u64 address is split into 2 __u32 fields to ensure proper
+ * packing. Otherwise we can't fit enough frags into an IBNAL message (<=
+ * smallest page size on any arch). */
+typedef struct
+{
+ __u32 rf_nob; /* # of bytes */
+ __u32 rf_addr_lo; /* lo 4 bytes of vaddr */
+ __u32 rf_addr_hi; /* hi 4 bytes of vaddr */
+} kib_rdma_frag_t __attribute__((packed));
+
typedef struct
{
- ptl_hdr_t ibrm_hdr; /* portals header */
- __u64 ibrm_cookie; /* opaque completion cookie */
- __u32 ibrm_num_descs; /* how many descs */
- __u32 rd_key; /* remote key */
- kib_rdma_desc_t ibrm_desc[0]; /* where to suck/blow */
-} kib_rdma_msg_t __attribute__((packed));
+ __u32 rd_key; /* local/remote key */
+ __u32 rd_nfrag; /* # fragments */
+ kib_rdma_frag_t rd_frags[0]; /* buffer frags */
+} kib_rdma_desc_t __attribute__((packed));
-#define kib_rdma_msg_len(num_descs) \
- offsetof(kib_msg_t, ibm_u.rdma.ibrm_desc[num_descs])
+/* CAVEAT EMPTOR! We don't actually put ibprm_rd on the wire; it's just there
+ * to remember the source buffers while we wait for the PUT_ACK */
+
+typedef struct
+{
+ ptl_hdr_t ibprm_hdr; /* portals header */
+ __u64 ibprm_cookie; /* opaque completion cookie */
+ kib_rdma_frag_t ibprm_rd; /* source buffer */
+} kib_putreq_msg_t __attribute__((packed));
+
+typedef struct
+{
+ __u64 ibpam_src_cookie; /* reflected completion cookie */
+ __u64 ibpam_dst_cookie; /* opaque completion cookie */
+ kib_rdma_desc_t ibpam_rd; /* sender's sink buffer */
+} kib_putack_msg_t __attribute__((packed));
+
+typedef struct
+{
+ ptl_hdr_t ibgm_hdr; /* portals header */
+ __u64 ibgm_cookie; /* opaque completion cookie */
+ kib_rdma_desc_t ibgm_rd; /* rdma descriptor */
+} kib_get_msg_t __attribute__((packed));
typedef struct
{
__u64 ibcm_cookie; /* opaque completion cookie */
- __u32 ibcm_status; /* completion status */
+ __s32 ibcm_status; /* < 0 failure: >= 0 length */
} kib_completion_msg_t __attribute__((packed));
typedef struct
{
- __u32 ibm_magic; /* I'm an openibnal message */
- __u16 ibm_version; /* this is my version number */
- __u8 ibm_type; /* msg type */
- __u8 ibm_credits; /* returned credits */
-#if IBNAL_CKSUM
- __u32 ibm_nob;
- __u32 ibm_cksum;
-#endif
+ /* First 2 fields fixed FOR ALL TIME */
+ __u32 ibm_magic; /* I'm an openibnal message */
+ __u16 ibm_version; /* this is my version number */
+
+ __u8 ibm_type; /* msg type */
+ __u8 ibm_credits; /* returned credits */
+ __u32 ibm_nob; /* # bytes in whole message */
+ __u32 ibm_cksum; /* checksum (0 == no checksum) */
+ __u64 ibm_srcnid; /* sender's NID */
+ __u64 ibm_srcstamp; /* sender's incarnation */
+ __u64 ibm_dstnid; /* destination's NID */
+ __u64 ibm_dststamp; /* destination's incarnation */
+
union {
+ kib_connparams_t connparams;
kib_immediate_msg_t immediate;
- kib_rdma_msg_t rdma;
+ kib_putreq_msg_t putreq;
+ kib_putack_msg_t putack;
+ kib_get_msg_t get;
kib_completion_msg_t completion;
} ibm_u __attribute__((packed));
} kib_msg_t __attribute__((packed));
#define IBNAL_MSG_MAGIC 0x0be91b91 /* unique magic */
-#define IBNAL_MSG_VERSION 1 /* current protocol version */
+#define IBNAL_MSG_VERSION 4 /* current protocol version */
+#define IBNAL_MSG_CONNREQ 0xc0 /* connection request */
+#define IBNAL_MSG_CONNACK 0xc1 /* connection acknowledge */
#define IBNAL_MSG_NOOP 0xd0 /* nothing (just credits) */
-#define IBNAL_MSG_IMMEDIATE 0xd1 /* portals hdr + payload */
-#define IBNAL_MSG_PUT_RDMA 0xd2 /* portals PUT hdr + source rdma desc */
-#define IBNAL_MSG_PUT_DONE 0xd3 /* signal PUT rdma completion */
-#define IBNAL_MSG_GET_RDMA 0xd4 /* portals GET hdr + sink rdma desc */
-#define IBNAL_MSG_GET_DONE 0xd5 /* signal GET rdma completion */
+#define IBNAL_MSG_IMMEDIATE 0xd1 /* immediate */
+#define IBNAL_MSG_PUT_REQ 0xd2 /* putreq (src->sink) */
+#define IBNAL_MSG_PUT_NAK 0xd3 /* completion (sink->src) */
+#define IBNAL_MSG_PUT_ACK 0xd4 /* putack (sink->src) */
+#define IBNAL_MSG_PUT_DONE 0xd5 /* completion (src->sink) */
+#define IBNAL_MSG_GET_REQ 0xd6 /* getreq (sink->src) */
+#define IBNAL_MSG_GET_DONE 0xd7 /* completion (src->sink: all OK) */
/***********************************************************************/
{
struct list_head rx_list; /* queue for attention */
struct kib_conn *rx_conn; /* owning conn */
- int rx_rdma; /* RDMA completion posted? */
+ int rx_responded; /* responded to peer? */
int rx_posted; /* posted? */
- kib_msg_t *rx_msg; /* pre-mapped buffer */
- vv_l_key_t l_key;
- vv_wr_t rx_wrq;
+#if IBNAL_WHOLE_MEM
+ vv_l_key_t rx_lkey; /* local key */
+#else
+ __u64 rx_vaddr; /* pre-mapped buffer (hca vaddr) */
+#endif
+ kib_msg_t *rx_msg; /* pre-mapped buffer (host vaddr) */
+ vv_wr_t rx_wrq; /* receive work item */
vv_scatgat_t rx_gl; /* and its memory */
} kib_rx_t;
+#if IBNAL_WHOLE_MEM
+# define KIBNAL_RX_VADDR(rx) ((__u64)((unsigned long)((rx)->rx_msg)))
+# define KIBNAL_RX_LKEY(rx) ((rx)->rx_lkey)
+#else
+# define KIBNAL_RX_VADDR(rx) ((rx)->rx_vaddr)
+# define KIBNAL_RX_LKEY(rx) ((rx)->rx_conn->ibc_rx_pages->ibp_lkey)
+#endif
+
typedef struct kib_tx /* transmit message */
{
struct list_head tx_list; /* queue on idle_txs ibc_tx_queue etc. */
struct kib_conn *tx_conn; /* owning conn */
int tx_mapped; /* mapped for RDMA? */
int tx_sending; /* # tx callbacks outstanding */
+ int tx_waiting; /* waiting for peer */
int tx_status; /* completion status */
unsigned long tx_deadline; /* completion deadline */
- int tx_passive_rdma; /* peer sucks/blows */
- int tx_passive_rdma_wait; /* waiting for peer to complete */
- __u64 tx_passive_rdma_cookie; /* completion cookie */
+ __u64 tx_cookie; /* completion cookie */
lib_msg_t *tx_libmsg[2]; /* lib msgs to finalize on completion */
+#if IBNAL_WHOLE_MEM
+ vv_l_key_t tx_lkey; /* local key for message buffer */
+#else
kib_md_t tx_md; /* RDMA mapping (active/passive) */
- kib_msg_t *tx_msg; /* pre-mapped buffer */
- vv_l_key_t l_key;
- vv_r_key_t r_key;
- int tx_nsp; /* # send work items */
- vv_wr_t tx_wrq[IBNAL_TX_MAX_SG]; /* send work items... */
- vv_scatgat_t tx_gl[IBNAL_TX_MAX_SG]; /* ...and their memory */
+ __u64 tx_vaddr; /* pre-mapped buffer (hca vaddr) */
+#endif
+ kib_msg_t *tx_msg; /* message buffer (host vaddr) */
+ int tx_nwrq; /* # send work items */
+ vv_wr_t *tx_wrq; /* send work items... */
+ vv_scatgat_t *tx_gl; /* ...and their memory */
+ kib_rdma_desc_t *tx_rd; /* rdma descriptor (src buffers) */
} kib_tx_t;
+#if IBNAL_WHOLE_MEM
+# define KIBNAL_TX_VADDR(tx) ((__u64)((unsigned long)((tx)->tx_msg)))
+# define KIBNAL_TX_LKEY(tx) ((tx)->tx_lkey)
+#else
+# define KIBNAL_TX_VADDR(tx) ((tx)->tx_vaddr)
+# define KIBNAL_TX_LKEY(tx) (kibnal_data.kib_tx_pages->ibp_lkey)
+#endif
+
#define KIB_TX_UNMAPPED 0
#define KIB_TX_MAPPED 1
-#define KIB_TX_MAPPED_FMR 2
-
-typedef struct kib_wire_connreq
-{
- __u32 wcr_magic; /* I'm an openibnal connreq */
- __u16 wcr_version; /* this is my version number */
- __u16 wcr_queue_depth; /* this is my receive queue size */
- __u64 wcr_nid; /* peer's NID */
- __u64 wcr_incarnation; /* peer's incarnation */
-} kib_wire_connreq_t;
-
-typedef struct kib_gid
-{
- __u64 hi, lo;
-} kib_gid_t;
-
-typedef struct kib_connreq
-{
- /* connection-in-progress */
- struct kib_conn *cr_conn;
- kib_wire_connreq_t cr_wcr;
- __u64 cr_tid;
- //ib_service_record_v2_t cr_service;
- kib_gid_t cr_gid;
- ib_path_record_v2_t cr_path;
-
- union {
- cm_request_data_t cr_cm_req;
- cm_rtu_data_t cr_cm_rtu;
- } ;
-} kib_connreq_t;
+/* Passive connection request (listener callback) queued for handling by connd */
+typedef struct kib_pcreq
+{
+ struct list_head pcr_list; /* queue for handling by connd */
+ cm_cep_handle_t pcr_cep; /* listening handle */
+ cm_request_data_t pcr_cmreq; /* request data */
+} kib_pcreq_t;
+
+typedef struct kib_connvars
+{
+ /* connection-in-progress variables */
+ __u32 cv_port;
+ __u32 cv_pkey_index;
+ __u32 cv_rnr_count;
+ __u32 cv_sgid_index;
+ __u32 cv_remote_qpn;
+ __u32 cv_local_qpn;
+ __u32 cv_rxpsn;
+ __u32 cv_txpsn;
+ ib_path_record_v2_t cv_path;
+ ibat_arp_data_t cv_arp;
+ ibat_stat_t cv_arprc;
+ cm_conn_data_t cv_conndata;
+} kib_connvars_t;
typedef struct kib_conn
{
int ibc_nsends_posted; /* # uncompleted sends */
int ibc_credits; /* # credits I have */
int ibc_outstanding_credits; /* # credits to return */
- int ibc_rcvd_disconnect;/* received discon request */
- int ibc_sent_disconnect;/* sent discon request */
+ int ibc_disconnect; /* some disconnect callback fired */
+ int ibc_comms_error; /* set on comms error */
+ struct list_head ibc_early_rxs; /* rxs completed before ESTABLISHED */
struct list_head ibc_tx_queue; /* send queue */
struct list_head ibc_active_txs; /* active tx awaiting completion */
spinlock_t ibc_lock; /* serialise */
kib_rx_t *ibc_rxs; /* the rx descs */
kib_pages_t *ibc_rx_pages; /* premapped rx msg pages */
vv_qp_h_t ibc_qp; /* queue pair */
- cm_cep_handle_t ibc_cep; /* connection ID? */
- vv_qp_attr_t ibc_qp_attrs; /* QP attrs */
- kib_connreq_t *ibc_connreq; /* connection request state */
+ cm_cep_handle_t ibc_cep; /* connection endpoint */
+ kib_connvars_t *ibc_connvars; /* in-progress connection state */
} kib_conn_t;
-#define IBNAL_CONN_INIT_NOTHING 0 /* initial state */
-#define IBNAL_CONN_INIT_QP 1 /* ibc_qp set up */
-#define IBNAL_CONN_CONNECTING 2 /* started to connect */
-#define IBNAL_CONN_ESTABLISHED 3 /* connection established */
-#define IBNAL_CONN_SEND_DREQ 4 /* to send disconnect req */
-#define IBNAL_CONN_DREQ 5 /* sent disconnect req */
-#define IBNAL_CONN_DREP 6 /* sent disconnect rep */
-#define IBNAL_CONN_DISCONNECTED 7 /* no more QP or CM traffic */
-
-#define KIB_ASSERT_CONN_STATE(conn, state) do { \
- LASSERTF((conn)->ibc_state == state, "%d\n", conn->ibc_state); \
-} while (0)
-
-#define KIB_ASSERT_CONN_STATE_RANGE(conn, low, high) do { \
- LASSERTF(low <= high, "%d %d\n", low, high); \
- LASSERTF((conn)->ibc_state >= low && (conn)->ibc_state <= high, \
- "%d\n", conn->ibc_state); \
-} while (0)
+#define IBNAL_CONN_INIT_NOTHING 0 /* incomplete init */
+#define IBNAL_CONN_INIT 1 /* completed init */
+#define IBNAL_CONN_ACTIVE_ARP 2 /* active arping */
+#define IBNAL_CONN_ACTIVE_CONNECT 3 /* active sending req */
+#define IBNAL_CONN_ACTIVE_CHECK_REPLY 4 /* active checking reply */
+#define IBNAL_CONN_ACTIVE_RTU 5 /* active sending rtu */
+#define IBNAL_CONN_PASSIVE_WAIT 6 /* passive waiting for rtu */
+#define IBNAL_CONN_ESTABLISHED 7 /* connection established */
+#define IBNAL_CONN_DISCONNECT1 8 /* disconnect phase 1 */
+#define IBNAL_CONN_DISCONNECT2 9 /* disconnect phase 2 */
+#define IBNAL_CONN_DISCONNECTED 10 /* disconnect complete */
typedef struct kib_peer
{
struct list_head ibp_list; /* stash on global peer list */
struct list_head ibp_connd_list; /* schedule on kib_connd_peers */
ptl_nid_t ibp_nid; /* who's on the other end(s) */
+ __u32 ibp_ip; /* IP to query for peer conn params */
+ int ibp_port; /* port to qery for peer conn params */
+ __u64 ibp_incarnation; /* peer's incarnation */
atomic_t ibp_refcount; /* # users */
int ibp_persistence; /* "known" peer refs */
struct list_head ibp_conns; /* all active connections */
unsigned long ibp_reconnect_interval; /* exponential backoff */
} kib_peer_t;
-struct sa_request;
-typedef void (*sa_request_cb_t)(struct sa_request *request);
-
-struct sa_request {
- /* Link all the pending GSI datagrams together. */
- struct list_head list;
-
- int retry; /* number of retries left (after a timeout only) */
- int status; /* status of the request */
- gsi_dtgrm_t *dtgrm_req; /* request */
- gsi_dtgrm_t *dtgrm_resp; /* response */
- sa_mad_v2_t *mad; /* points inside the datagram */
-
- void *context;
-
- struct timer_list timer;
-
- /* When the requests is completed, we either call the callback
- * or post a completion. They are mutually exclusive. */
- struct completion signal;
- sa_request_cb_t callback;
-};
-
-/* The CM callback are called on the interrupt level. However we
- * cannot do everything we want on that level, so we let keventd run
- * the callback. */
-struct cm_off_level {
- struct tq_struct tq;
-
- cm_cep_handle_t cep;
- cm_conn_data_t *info;
- kib_conn_t *conn;
-};
extern lib_nal_t kibnal_lib;
extern kib_data_t kibnal_data;
extern kib_tunables_t kibnal_tunables;
-static inline int wrq_signals_completion(vv_wr_t *wrq)
+extern void kibnal_init_msg(kib_msg_t *msg, int type, int body_nob);
+extern void kibnal_pack_msg(kib_msg_t *msg, int credits,
+ ptl_nid_t dstnid, __u64 dststamp);
+extern int kibnal_unpack_msg(kib_msg_t *msg, int nob);
+extern kib_peer_t *kibnal_create_peer(ptl_nid_t nid);
+extern void kibnal_destroy_peer(kib_peer_t *peer);
+extern int kibnal_del_peer(ptl_nid_t nid, int single_share);
+extern kib_peer_t *kibnal_find_peer_locked(ptl_nid_t nid);
+extern void kibnal_unlink_peer_locked(kib_peer_t *peer);
+extern int kibnal_close_stale_conns_locked(kib_peer_t *peer,
+ __u64 incarnation);
+extern kib_conn_t *kibnal_create_conn(cm_cep_handle_t cep);
+extern void kibnal_listen_callback(cm_cep_handle_t cep, cm_conn_data_t *info, void *arg);
+
+extern int kibnal_alloc_pages(kib_pages_t **pp, int npages, int access);
+extern void kibnal_free_pages(kib_pages_t *p);
+
+extern void kibnal_check_sends(kib_conn_t *conn);
+extern void kibnal_close_conn_locked(kib_conn_t *conn, int error);
+extern void kibnal_destroy_conn(kib_conn_t *conn);
+extern int kibnal_thread_start(int (*fn)(void *arg), void *arg);
+extern int kibnal_scheduler(void *arg);
+extern int kibnal_connd(void *arg);
+extern void kibnal_init_tx_msg(kib_tx_t *tx, int type, int body_nob);
+extern void kibnal_close_conn(kib_conn_t *conn, int why);
+extern int kibnal_set_qp_state(kib_conn_t *conn, vv_qp_state_t new_state);
+extern void kibnal_async_callback(vv_event_record_t ev);
+extern void kibnal_cq_callback(unsigned long context);
+extern void kibnal_passive_connreq(kib_pcreq_t *pcr, int reject);
+extern void kibnal_pause(int ticks);
+extern void kibnal_queue_tx(kib_tx_t *tx, kib_conn_t *conn);
+extern int kibnal_init_rdma(kib_tx_t *tx, int type, int nob,
+ kib_rdma_desc_t *dstrd, __u64 dstcookie);
+
+static inline int
+wrq_signals_completion (vv_wr_t *wrq)
{
return wrq->completion_notification != 0;
}
-/******************************************************************************/
-
-/* these are purposely avoiding using local vars so they don't increase
- * stack consumption. */
+#define kibnal_conn_addref(conn) \
+do { \
+ CDEBUG(D_NET, "conn[%p] (%d)++\n", \
+ (conn), atomic_read(&(conn)->ibc_refcount)); \
+ LASSERT(atomic_read(&(conn)->ibc_refcount) > 0); \
+ atomic_inc(&(conn)->ibc_refcount); \
+} while (0)
-#define kib_peer_addref(peer) do { \
- LASSERTF(atomic_read(&peer->ibp_refcount) > 0, "%d\n", \
- atomic_read(&peer->ibp_refcount)); \
- CDEBUG(D_NET, "++peer[%p] -> "LPX64" (%d)\n", \
- peer, peer->ibp_nid, atomic_read (&peer->ibp_refcount)); \
- atomic_inc(&peer->ibp_refcount); \
+#define kibnal_conn_decref(conn) \
+do { \
+ unsigned long flags; \
+ \
+ CDEBUG(D_NET, "conn[%p] (%d)--\n", \
+ (conn), atomic_read(&(conn)->ibc_refcount)); \
+ LASSERT(atomic_read(&(conn)->ibc_refcount) > 0); \
+ if (atomic_dec_and_test(&(conn)->ibc_refcount)) { \
+ spin_lock_irqsave(&kibnal_data.kib_connd_lock, flags); \
+ list_add_tail(&(conn)->ibc_list, \
+ &kibnal_data.kib_connd_zombies); \
+ wake_up(&kibnal_data.kib_connd_waitq); \
+ spin_unlock_irqrestore(&kibnal_data.kib_connd_lock, flags); \
+ } \
} while (0)
-#define kib_peer_decref(peer) do { \
- LASSERTF(atomic_read(&peer->ibp_refcount) > 0, "%d\n", \
- atomic_read(&peer->ibp_refcount)); \
- CDEBUG(D_NET, "--peer[%p] -> "LPX64" (%d)\n", \
- peer, peer->ibp_nid, atomic_read (&peer->ibp_refcount)); \
- if (atomic_dec_and_test (&peer->ibp_refcount)) { \
- CDEBUG (D_NET, "destroying peer "LPX64" %p\n", \
- peer->ibp_nid, peer); \
- kibnal_destroy_peer (peer); \
- } \
+#define kibnal_peer_addref(peer) \
+do { \
+ CDEBUG(D_NET, "peer[%p] -> "LPX64" (%d)++\n", \
+ (peer), (peer)->ibp_nid, \
+ atomic_read (&(peer)->ibp_refcount)); \
+ LASSERT(atomic_read(&(peer)->ibp_refcount) > 0); \
+ atomic_inc(&(peer)->ibp_refcount); \
} while (0)
-/******************************************************************************/
+#define kibnal_peer_decref(peer) \
+do { \
+ CDEBUG(D_NET, "peer[%p] -> "LPX64" (%d)--\n", \
+ (peer), (peer)->ibp_nid, \
+ atomic_read (&(peer)->ibp_refcount)); \
+ LASSERT(atomic_read(&(peer)->ibp_refcount) > 0); \
+ if (atomic_dec_and_test(&(peer)->ibp_refcount)) \
+ kibnal_destroy_peer(peer); \
+} while (0)
static inline struct list_head *
kibnal_nid2peerlist (ptl_nid_t nid)
}
static inline int
-kibnal_peer_active(kib_peer_t *peer)
+kibnal_peer_active (kib_peer_t *peer)
{
/* Am I in the peer hash table? */
return (!list_empty(&peer->ibp_list));
{
/* CAVEAT EMPTOR: tx takes caller's ref on conn */
- LASSERT (tx->tx_nsp > 0); /* work items set up */
- LASSERT (tx->tx_conn == NULL); /* only set here */
-
- tx->tx_conn = conn;
+ LASSERT (tx->tx_nwrq > 0); /* work items set up */
+ if (tx->tx_conn == NULL) {
+ kibnal_conn_addref(conn);
+ tx->tx_conn = conn;
+ } else {
+ LASSERT (tx->tx_conn == conn);
+ LASSERT (tx->tx_msg->ibm_type == IBNAL_MSG_PUT_DONE);
+ }
tx->tx_deadline = jiffies + kibnal_tunables.kib_io_timeout * HZ;
list_add_tail(&tx->tx_list, &conn->ibc_tx_queue);
}
-static inline __u64*
-kibnal_service_nid_field(ib_service_record_v2_t *sr)
-{
- /* The service key mask must have byte 0 to 7 set. */
- return (__u64 *)sr->service_data8;
-}
-
-static inline void
-kibnal_set_service_keys(ib_service_record_v2_t *sr, ptl_nid_t nid)
-{
- LASSERT (strlen(IBNAL_SERVICE_NAME) < sizeof(sr->service_name));
-
- strcpy (sr->service_name, IBNAL_SERVICE_NAME);
-
- *kibnal_service_nid_field(sr) = cpu_to_le64(nid);
-}
-
-#if CONFIG_X86
-/* TODO: use vv_va2adverize instead */
-static inline __u64
-kibnal_page2phys (struct page *p)
-{
- __u64 page_number = p - mem_map;
-
- return (page_number << PAGE_SHIFT);
-}
-#else
-# error "no page->phys"
-#endif
+/* CAVEAT EMPTOR: We rely on tx/rx descriptor alignment to allow us to use the
+ * lowest 2 bits of the work request id to stash the work item type (the op
+ * field is not valid when the wc completes in error). */
-/* CAVEAT EMPTOR: We rely on tx/rx descriptor alignment to allow us to
- * use the lowest bit of the work request id as a flag to determine if
- * the completion is for a transmit or a receive (the op field is not
- * valid when the wc completes in error). */
+#define IBNAL_WID_TX 0
+#define IBNAL_WID_RX 1
+#define IBNAL_WID_RDMA 2
+#define IBNAL_WID_MASK 3UL
static inline vv_wr_id_t
-kibnal_ptr2wreqid (void *ptr, int isrx)
+kibnal_ptr2wreqid (void *ptr, int type)
{
unsigned long lptr = (unsigned long)ptr;
- LASSERT ((lptr & 1) == 0);
- return (vv_wr_id_t)(lptr | (isrx ? 1 : 0));
+ LASSERT ((lptr & IBNAL_WID_MASK) == 0);
+ LASSERT ((type & ~IBNAL_WID_MASK) == 0);
+ return (vv_wr_id_t)(lptr | type);
}
static inline void *
kibnal_wreqid2ptr (vv_wr_id_t wreqid)
{
- return (void *)(((unsigned long)wreqid) & ~1UL);
-}
-
-static inline int
-kibnal_wreqid_is_rx (vv_wr_id_t wreqid)
-{
- return (wreqid & 1) != 0;
+ return (void *)(((unsigned long)wreqid) & ~IBNAL_WID_MASK);
}
static inline int
-kibnal_whole_mem(void)
+kibnal_wreqid2type (vv_wr_id_t wreqid)
{
-#if IBNAL_WHOLE_MEM
- return true;
-#else
- return false;
-#endif
-}
-
-/* Voltaire stores GIDs in host order. */
-static inline void gid_swap(vv_gid_t *gid)
-{
- u_int64_t s;
-
- s = gid->scope.g.subnet;
- gid->scope.g.subnet = cpu_to_be64(gid->scope.g.eui64);
- gid->scope.g.eui64 = cpu_to_be64(s);
+ return (wreqid & IBNAL_WID_MASK);
}
-#if 0
-static void dump_qp(kib_conn_t *conn)
+static inline void
+kibnal_set_conn_state (kib_conn_t *conn, int state)
{
- vv_qp_attr_t *qp_attrs;
- void *qp_context;
- vv_return_t retval;
-
- CERROR("QP dumping %p\n", conn);
-
- retval = vv_qp_query(kibnal_data.kib_hca, conn->ibc_qp, &qp_context, &conn->ibc_qp_attrs);
- if (retval) {
- CERROR ("Couldn't query qp attributes: %d\n", retval);
- return;
- }
-
- qp_attrs = &conn->ibc_qp_attrs;
-
- CERROR("QP %x dump\n", qp_attrs->query.qp_num);
- CERROR(" vv_qp_attr_mask = %llx\n", qp_attrs->query.vv_qp_attr_mask);
- CERROR(" qp_state = %d\n", qp_attrs->query.qp_state);
- CERROR(" cq_send_h = %p\n", qp_attrs->query.cq_send_h);
- CERROR(" cq_receive_h = %p \n", qp_attrs->query.cq_receive_h);
- CERROR(" send_max_outstand_wr = %d\n", qp_attrs->query.send_max_outstand_wr);
- CERROR(" receive_max_outstand_wr = %d\n", qp_attrs->query.receive_max_outstand_wr);
- CERROR(" max_scatgat_per_send_wr = %d\n", qp_attrs->query.max_scatgat_per_send_wr);
- CERROR(" max_scatgat_per_receive_wr = %d\n", qp_attrs->query.max_scatgat_per_receive_wr);
- CERROR(" send_psn = %x\n", qp_attrs->query.send_psn);
- CERROR(" receve_psn = %x\n", qp_attrs->query.receve_psn);
- CERROR(" access_control = %x\n", qp_attrs->query.access_control);
- CERROR(" phy_port_num = %d\n", qp_attrs->query.phy_port_num);
- CERROR(" primary_p_key_indx = %x\n", qp_attrs->query.primary_p_key_indx);
- CERROR(" q_key = %x\n", qp_attrs->query.q_key);
- CERROR(" destanation_qp = %x\n", qp_attrs->query.destanation_qp);
- CERROR(" rdma_r_atom_outstand_num = %d\n", qp_attrs->query.rdma_r_atom_outstand_num);
- CERROR(" responder_rdma_r_atom_num = %d\n", qp_attrs->query.responder_rdma_r_atom_num);
- CERROR(" min_rnr_nak_timer = %d\n", qp_attrs->query.min_rnr_nak_timer);
- CERROR(" pd_h = %lx\n", qp_attrs->query.pd_h);
- CERROR(" recv_solicited_events = %d\n", qp_attrs->query.recv_solicited_events);
- CERROR(" send_signaled_comp = %d\n", qp_attrs->query.send_signaled_comp);
- CERROR(" flow_control = %d\n", qp_attrs->query.flow_control);
+ conn->ibc_state = state;
+ mb();
}
-#else
-#define dump_qp(a)
-#endif
-#if 0
-static void dump_wqe(vv_wr_t *wr)
+static inline __u64
+kibnal_rf_addr (kib_rdma_frag_t *rf)
{
- CERROR("Dumping send WR %p\n", wr);
-
- CERROR(" wr_id = %llx\n", wr->wr_id);
- CERROR(" completion_notification = %d\n", wr->completion_notification);
- CERROR(" scatgat_list = %p\n", wr->scatgat_list);
- CERROR(" num_of_data_segments = %d\n", wr->num_of_data_segments);
-
- if (wr->scatgat_list && wr->num_of_data_segments) {
- CERROR(" scatgat_list[0].v_address = %p\n", wr->scatgat_list[0].v_address);
- CERROR(" scatgat_list[0].length = %d\n", wr->scatgat_list[0].length);
- CERROR(" scatgat_list[0].l_key = %x\n", wr->scatgat_list[0].l_key);
- }
-
- CERROR(" wr_type = %d\n", wr->wr_type);
-
- switch(wr->wr_type) {
- case vv_wr_send:
- CERROR(" send\n");
-
- CERROR(" fance_indicator = %d\n", wr->type.send.send_qp_type.rc_type.fance_indicator);
- break;
-
- case vv_wr_receive:
- break;
-
- case vv_wr_rdma_write:
- case vv_wr_rdma_read:
- CERROR(" rdma\n");
- CERROR(" fance_indicator = %d\n", wr->type.send.send_qp_type.rc_type.fance_indicator);
- CERROR(" r_addr = %llx\n", wr->type.send.send_qp_type.rc_type.r_addr);
- CERROR(" r_r_key = %x\n", wr->type.send.send_qp_type.rc_type.r_r_key);
- break;
-
- default:
- break;
- }
+ return (((__u64)rf->rf_addr_hi)<<32) | ((__u64)rf->rf_addr_lo);
}
-#else
-#define dump_wqe(a)
-#endif
-
-#if 0
-static void dump_wc(vv_wc_t *wc)
+static inline void
+kibnal_rf_set (kib_rdma_frag_t *rf, __u64 addr, int nob)
{
- CERROR("Dumping WC\n");
-
- CERROR(" wr_id = %llx\n", wc->wr_id);
- CERROR(" operation_type = %d\n", wc->operation_type);
- CERROR(" num_bytes_transfered = %lld\n", wc->num_bytes_transfered);
- CERROR(" completion_status = %d\n", wc->completion_status);
+ rf->rf_addr_lo = addr & 0xffffffff;
+ rf->rf_addr_hi = (addr >> 32) & 0xffffffff;
+ rf->rf_nob = nob;
}
-#else
-#define dump_wc(a)
-#endif
-
-#if 0
-static void hexdump(char *string, void *ptr, int len)
-{
- unsigned char *c = ptr;
- int i;
-
- if (len < 0 || len > 2048) {
- printk("XXX what the hell? %d\n",len);
- return;
- }
-
- printk("%d bytes of '%s' from 0x%p\n", len, string, ptr);
- for (i = 0; i < len;) {
- printk("%02x",*(c++));
- i++;
- if (!(i & 15)) {
- printk("\n");
- } else if (!(i&1)) {
- printk(" ");
- }
- }
-
- if(len & 15) {
- printk("\n");
- }
+static inline int
+kibnal_rd_size (kib_rdma_desc_t *rd)
+{
+ int i;
+ int size;
+
+ for (i = size = 0; i < rd->rd_nfrag; i++)
+ size += rd->rd_frags[i].rf_nob;
+
+ return size;
}
-#else
-#define hexdump(a,b,c)
-#endif
-
-/*--------------------------------------------------------------------------*/
-
-
-extern kib_peer_t *kibnal_create_peer (ptl_nid_t nid);
-extern void kibnal_destroy_peer (kib_peer_t *peer);
-extern int kibnal_del_peer (ptl_nid_t nid, int single_share);
-extern kib_peer_t *kibnal_find_peer_locked (ptl_nid_t nid);
-extern void kibnal_unlink_peer_locked (kib_peer_t *peer);
-extern int kibnal_close_stale_conns_locked (kib_peer_t *peer,
- __u64 incarnation);
-extern kib_conn_t *kibnal_create_conn (void);
-extern void kibnal_put_conn (kib_conn_t *conn);
-extern void kibnal_destroy_conn (kib_conn_t *conn);
-extern void kibnal_listen_callback(cm_cep_handle_t cep, cm_conn_data_t *info, void *arg);
-
-extern int kibnal_alloc_pages (kib_pages_t **pp, int npages, int access);
-extern void kibnal_free_pages (kib_pages_t *p);
-
-extern void kibnal_check_sends (kib_conn_t *conn);
-extern void kibnal_close_conn_locked (kib_conn_t *conn, int error);
-extern void kibnal_destroy_conn (kib_conn_t *conn);
-extern int kibnal_thread_start (int (*fn)(void *arg), void *arg);
-extern int kibnal_scheduler(void *arg);
-extern int kibnal_connd (void *arg);
-extern void kibnal_init_tx_msg (kib_tx_t *tx, int type, int body_nob);
-extern void kibnal_close_conn (kib_conn_t *conn, int why);
-extern void kibnal_start_active_rdma (int type, int status,
- kib_rx_t *rx, lib_msg_t *libmsg,
- unsigned int niov,
- struct iovec *iov, ptl_kiov_t *kiov,
- size_t offset, size_t nob);
-
-void kibnal_ca_async_callback(vv_event_record_t ev);
-void kibnal_ca_callback (unsigned long context);
-extern void vibnal_mad_received_cb(gsi_class_handle_t handle, void *context, gsi_dtgrm_t * dtgrm);
-extern void vibnal_mad_sent_cb(gsi_class_handle_t handle, void *context, gsi_dtgrm_t * dtgrm);
-extern int kibnal_advertize_op(ptl_nid_t nid, int op, sa_request_cb_t callback, void *context);
-extern int vibnal_start_sa_request(struct sa_request *request);
-extern struct sa_request *alloc_sa_request(void);
-extern void free_sa_request(struct sa_request *request);
-extern int kibnal_pathrecord_op(struct sa_request *request, vv_gid_t dgid, sa_request_cb_t callback, void *context);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff