/* * 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 <net/neighbour.h> #include <asm/atomic.h> #include <asm/semaphore.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_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_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 semaphore mcast_mutex; struct semaphore 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_buf *rx_ring; spinlock_t tx_lock; struct ipoib_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; #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; }; static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh) { return (struct ipoib_neigh **) (neigh->ha + 24 - (offsetof(struct neighbour, ha) & 4)); } 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_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 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); void ipoib_mcast_dev_down(struct net_device *dev); void ipoib_mcast_dev_flush(struct net_device *dev); struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev); void ipoib_mcast_iter_free(struct ipoib_mcast_iter *iter); 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); 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_qp_create(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 int ipoib_create_debug_file(struct net_device *dev); void ipoib_delete_debug_file(struct net_device *dev); int ipoib_register_debugfs(void); void ipoib_unregister_debugfs(void); #else static inline int ipoib_create_debug_file(struct net_device *dev) { return 0; } static inline void ipoib_delete_debug_file(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 */