0b3ea0829c
Move ipoib_ib_dev_flush() to ipoib's workqueue. This keeps it ordered with respect to other work scheduled by the ipoib driver. This fixes problems with races, for example: - ipoib_ib_dev_flush() has started running because of an IB event - user does ifconfig ib0 down - ipoib_mcast_stop_thread() gets called twice and waits for the same completion twice Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
375 lines
11 KiB
C
375 lines
11 KiB
C
/*
|
|
* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
|
|
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
|
|
* Copyright (c) 2004 Voltaire, 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.
|
|
*
|
|
* $Id: ipoib.h 1358 2004-12-17 22:00:11Z roland $
|
|
*/
|
|
|
|
#ifndef _IPOIB_H
|
|
#define _IPOIB_H
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/config.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/if_infiniband.h>
|
|
#include <linux/mutex.h>
|
|
|
|
#include <net/neighbour.h>
|
|
|
|
#include <asm/atomic.h>
|
|
|
|
#include <rdma/ib_verbs.h>
|
|
#include <rdma/ib_pack.h>
|
|
#include <rdma/ib_sa.h>
|
|
|
|
/* constants */
|
|
|
|
enum {
|
|
IPOIB_PACKET_SIZE = 2048,
|
|
IPOIB_BUF_SIZE = IPOIB_PACKET_SIZE + IB_GRH_BYTES,
|
|
|
|
IPOIB_ENCAP_LEN = 4,
|
|
|
|
IPOIB_RX_RING_SIZE = 128,
|
|
IPOIB_TX_RING_SIZE = 64,
|
|
|
|
IPOIB_NUM_WC = 4,
|
|
|
|
IPOIB_MAX_PATH_REC_QUEUE = 3,
|
|
IPOIB_MAX_MCAST_QUEUE = 3,
|
|
|
|
IPOIB_FLAG_OPER_UP = 0,
|
|
IPOIB_FLAG_ADMIN_UP = 1,
|
|
IPOIB_PKEY_ASSIGNED = 2,
|
|
IPOIB_PKEY_STOP = 3,
|
|
IPOIB_FLAG_SUBINTERFACE = 4,
|
|
IPOIB_MCAST_RUN = 5,
|
|
IPOIB_STOP_REAPER = 6,
|
|
IPOIB_MCAST_STARTED = 7,
|
|
|
|
IPOIB_MAX_BACKOFF_SECONDS = 16,
|
|
|
|
IPOIB_MCAST_FLAG_FOUND = 0, /* used in set_multicast_list */
|
|
IPOIB_MCAST_FLAG_SENDONLY = 1,
|
|
IPOIB_MCAST_FLAG_BUSY = 2, /* joining or already joined */
|
|
IPOIB_MCAST_FLAG_ATTACHED = 3,
|
|
};
|
|
|
|
/* structs */
|
|
|
|
struct ipoib_header {
|
|
__be16 proto;
|
|
u16 reserved;
|
|
};
|
|
|
|
struct ipoib_pseudoheader {
|
|
u8 hwaddr[INFINIBAND_ALEN];
|
|
};
|
|
|
|
struct ipoib_mcast;
|
|
|
|
struct ipoib_rx_buf {
|
|
struct sk_buff *skb;
|
|
dma_addr_t mapping;
|
|
};
|
|
|
|
struct ipoib_tx_buf {
|
|
struct sk_buff *skb;
|
|
DECLARE_PCI_UNMAP_ADDR(mapping)
|
|
};
|
|
|
|
/*
|
|
* Device private locking: tx_lock protects members used in TX fast
|
|
* path (and we use LLTX so upper layers don't do extra locking).
|
|
* lock protects everything else. lock nests inside of tx_lock (ie
|
|
* tx_lock must be acquired first if needed).
|
|
*/
|
|
struct ipoib_dev_priv {
|
|
spinlock_t lock;
|
|
|
|
struct net_device *dev;
|
|
|
|
unsigned long flags;
|
|
|
|
struct mutex mcast_mutex;
|
|
struct mutex vlan_mutex;
|
|
|
|
struct rb_root path_tree;
|
|
struct list_head path_list;
|
|
|
|
struct ipoib_mcast *broadcast;
|
|
struct list_head multicast_list;
|
|
struct rb_root multicast_tree;
|
|
|
|
struct work_struct pkey_task;
|
|
struct work_struct mcast_task;
|
|
struct work_struct flush_task;
|
|
struct work_struct restart_task;
|
|
struct work_struct ah_reap_task;
|
|
|
|
struct ib_device *ca;
|
|
u8 port;
|
|
u16 pkey;
|
|
struct ib_pd *pd;
|
|
struct ib_mr *mr;
|
|
struct ib_cq *cq;
|
|
struct ib_qp *qp;
|
|
u32 qkey;
|
|
|
|
union ib_gid local_gid;
|
|
u16 local_lid;
|
|
u8 local_rate;
|
|
|
|
unsigned int admin_mtu;
|
|
unsigned int mcast_mtu;
|
|
|
|
struct ipoib_rx_buf *rx_ring;
|
|
|
|
spinlock_t tx_lock;
|
|
struct ipoib_tx_buf *tx_ring;
|
|
unsigned tx_head;
|
|
unsigned tx_tail;
|
|
struct ib_sge tx_sge;
|
|
struct ib_send_wr tx_wr;
|
|
|
|
struct ib_wc ibwc[IPOIB_NUM_WC];
|
|
|
|
struct list_head dead_ahs;
|
|
|
|
struct ib_event_handler event_handler;
|
|
|
|
struct net_device_stats stats;
|
|
|
|
struct net_device *parent;
|
|
struct list_head child_intfs;
|
|
struct list_head list;
|
|
|
|
#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
|
|
struct list_head fs_list;
|
|
struct dentry *mcg_dentry;
|
|
struct dentry *path_dentry;
|
|
#endif
|
|
};
|
|
|
|
struct ipoib_ah {
|
|
struct net_device *dev;
|
|
struct ib_ah *ah;
|
|
struct list_head list;
|
|
struct kref ref;
|
|
unsigned last_send;
|
|
};
|
|
|
|
struct ipoib_path {
|
|
struct net_device *dev;
|
|
struct ib_sa_path_rec pathrec;
|
|
struct ipoib_ah *ah;
|
|
struct sk_buff_head queue;
|
|
|
|
struct list_head neigh_list;
|
|
|
|
int query_id;
|
|
struct ib_sa_query *query;
|
|
struct completion done;
|
|
|
|
struct rb_node rb_node;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct ipoib_neigh {
|
|
struct ipoib_ah *ah;
|
|
struct sk_buff_head queue;
|
|
|
|
struct neighbour *neighbour;
|
|
|
|
struct list_head list;
|
|
};
|
|
|
|
/*
|
|
* We stash a pointer to our private neighbour information after our
|
|
* hardware address in neigh->ha. The ALIGN() expression here makes
|
|
* sure that this pointer is stored aligned so that an unaligned
|
|
* load is not needed to dereference it.
|
|
*/
|
|
static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
|
|
{
|
|
return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
|
|
INFINIBAND_ALEN, sizeof(void *));
|
|
}
|
|
|
|
extern struct workqueue_struct *ipoib_workqueue;
|
|
|
|
/* functions */
|
|
|
|
void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr);
|
|
|
|
struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
|
|
struct ib_pd *pd, struct ib_ah_attr *attr);
|
|
void ipoib_free_ah(struct kref *kref);
|
|
static inline void ipoib_put_ah(struct ipoib_ah *ah)
|
|
{
|
|
kref_put(&ah->ref, ipoib_free_ah);
|
|
}
|
|
|
|
int ipoib_open(struct net_device *dev);
|
|
int ipoib_add_pkey_attr(struct net_device *dev);
|
|
|
|
void ipoib_send(struct net_device *dev, struct sk_buff *skb,
|
|
struct ipoib_ah *address, u32 qpn);
|
|
void ipoib_reap_ah(void *dev_ptr);
|
|
|
|
void ipoib_flush_paths(struct net_device *dev);
|
|
struct ipoib_dev_priv *ipoib_intf_alloc(const char *format);
|
|
|
|
int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
|
|
void ipoib_ib_dev_flush(void *dev);
|
|
void ipoib_ib_dev_cleanup(struct net_device *dev);
|
|
|
|
int ipoib_ib_dev_open(struct net_device *dev);
|
|
int ipoib_ib_dev_up(struct net_device *dev);
|
|
int ipoib_ib_dev_down(struct net_device *dev, int flush);
|
|
int ipoib_ib_dev_stop(struct net_device *dev);
|
|
|
|
int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port);
|
|
void ipoib_dev_cleanup(struct net_device *dev);
|
|
|
|
void ipoib_mcast_join_task(void *dev_ptr);
|
|
void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
|
|
struct sk_buff *skb);
|
|
|
|
void ipoib_mcast_restart_task(void *dev_ptr);
|
|
int ipoib_mcast_start_thread(struct net_device *dev);
|
|
int ipoib_mcast_stop_thread(struct net_device *dev, int flush);
|
|
|
|
void ipoib_mcast_dev_down(struct net_device *dev);
|
|
void ipoib_mcast_dev_flush(struct net_device *dev);
|
|
|
|
#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
|
|
struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev);
|
|
int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter);
|
|
void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
|
|
union ib_gid *gid,
|
|
unsigned long *created,
|
|
unsigned int *queuelen,
|
|
unsigned int *complete,
|
|
unsigned int *send_only);
|
|
|
|
struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev);
|
|
int ipoib_path_iter_next(struct ipoib_path_iter *iter);
|
|
void ipoib_path_iter_read(struct ipoib_path_iter *iter,
|
|
struct ipoib_path *path);
|
|
#endif
|
|
|
|
int ipoib_mcast_attach(struct net_device *dev, u16 mlid,
|
|
union ib_gid *mgid);
|
|
int ipoib_mcast_detach(struct net_device *dev, u16 mlid,
|
|
union ib_gid *mgid);
|
|
|
|
int ipoib_init_qp(struct net_device *dev);
|
|
int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca);
|
|
void ipoib_transport_dev_cleanup(struct net_device *dev);
|
|
|
|
void ipoib_event(struct ib_event_handler *handler,
|
|
struct ib_event *record);
|
|
|
|
int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey);
|
|
int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey);
|
|
|
|
void ipoib_pkey_poll(void *dev);
|
|
int ipoib_pkey_dev_delay_open(struct net_device *dev);
|
|
|
|
#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
|
|
void ipoib_create_debug_files(struct net_device *dev);
|
|
void ipoib_delete_debug_files(struct net_device *dev);
|
|
int ipoib_register_debugfs(void);
|
|
void ipoib_unregister_debugfs(void);
|
|
#else
|
|
static inline void ipoib_create_debug_files(struct net_device *dev) { }
|
|
static inline void ipoib_delete_debug_files(struct net_device *dev) { }
|
|
static inline int ipoib_register_debugfs(void) { return 0; }
|
|
static inline void ipoib_unregister_debugfs(void) { }
|
|
#endif
|
|
|
|
|
|
#define ipoib_printk(level, priv, format, arg...) \
|
|
printk(level "%s: " format, ((struct ipoib_dev_priv *) priv)->dev->name , ## arg)
|
|
#define ipoib_warn(priv, format, arg...) \
|
|
ipoib_printk(KERN_WARNING, priv, format , ## arg)
|
|
|
|
|
|
#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
|
|
extern int ipoib_debug_level;
|
|
|
|
#define ipoib_dbg(priv, format, arg...) \
|
|
do { \
|
|
if (ipoib_debug_level > 0) \
|
|
ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
|
|
} while (0)
|
|
#define ipoib_dbg_mcast(priv, format, arg...) \
|
|
do { \
|
|
if (mcast_debug_level > 0) \
|
|
ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
|
|
} while (0)
|
|
#else /* CONFIG_INFINIBAND_IPOIB_DEBUG */
|
|
#define ipoib_dbg(priv, format, arg...) \
|
|
do { (void) (priv); } while (0)
|
|
#define ipoib_dbg_mcast(priv, format, arg...) \
|
|
do { (void) (priv); } while (0)
|
|
#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
|
|
|
|
#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
|
|
#define ipoib_dbg_data(priv, format, arg...) \
|
|
do { \
|
|
if (data_debug_level > 0) \
|
|
ipoib_printk(KERN_DEBUG, priv, format , ## arg); \
|
|
} while (0)
|
|
#else /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
|
|
#define ipoib_dbg_data(priv, format, arg...) \
|
|
do { (void) (priv); } while (0)
|
|
#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG_DATA */
|
|
|
|
|
|
#define IPOIB_GID_FMT "%x:%x:%x:%x:%x:%x:%x:%x"
|
|
|
|
#define IPOIB_GID_ARG(gid) be16_to_cpup((__be16 *) ((gid).raw + 0)), \
|
|
be16_to_cpup((__be16 *) ((gid).raw + 2)), \
|
|
be16_to_cpup((__be16 *) ((gid).raw + 4)), \
|
|
be16_to_cpup((__be16 *) ((gid).raw + 6)), \
|
|
be16_to_cpup((__be16 *) ((gid).raw + 8)), \
|
|
be16_to_cpup((__be16 *) ((gid).raw + 10)), \
|
|
be16_to_cpup((__be16 *) ((gid).raw + 12)), \
|
|
be16_to_cpup((__be16 *) ((gid).raw + 14))
|
|
|
|
#endif /* _IPOIB_H */
|