usnic_ib.h

  1/*
  2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
  3 *
  4 * This software is available to you under a choice of one of two
  5 * licenses.  You may choose to be licensed under the terms of the GNU
  6 * General Public License (GPL) Version 2, available from the file
  7 * COPYING in the main directory of this source tree, or the
  8 * BSD license below:
  9 *
 10 *     Redistribution and use in source and binary forms, with or
 11 *     without modification, are permitted provided that the following
 12 *     conditions are met:
 13 *
 14 *      - Redistributions of source code must retain the above
 15 *        copyright notice, this list of conditions and the following
 16 *        disclaimer.
 17 *
 18 *      - Redistributions in binary form must reproduce the above
 19 *        copyright notice, this list of conditions and the following
 20 *        disclaimer in the documentation and/or other materials
 21 *        provided with the distribution.
 22 *
 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 30 * SOFTWARE.
 31 *
 32 */
 33
 34#ifndef USNIC_IB_H_
 35#define USNIC_IB_H_
 36
 37#include <linux/iommu.h>
 38#include <linux/netdevice.h>
 39
 40#include <rdma/ib_verbs.h>
 41
 42
 43#include "usnic.h"
 44#include "usnic_abi.h"
 45#include "usnic_vnic.h"
 46
 47#define USNIC_IB_PORT_CNT		1
 48#define USNIC_IB_NUM_COMP_VECTORS	1
 49
 50extern unsigned int usnic_ib_share_vf;
 51
 52struct usnic_ib_ucontext {
 53	struct ib_ucontext		ibucontext;
 54	/* Protected by usnic_ib_dev->usdev_lock */
 55	struct list_head		qp_grp_list;
 56	struct list_head		link;
 57};
 58
 59struct usnic_ib_pd {
 60	struct ib_pd			ibpd;
 61	struct usnic_uiom_pd		*umem_pd;
 62};
 63
 64struct usnic_ib_cq {
 65	struct ib_cq			ibcq;
 66};
 67
 68struct usnic_ib_mr {
 69	struct ib_mr			ibmr;
 70	struct usnic_uiom_reg		*umem;
 71};
 72
 73struct usnic_ib_dev {
 74	struct ib_device		ib_dev;
 75	struct pci_dev			*pdev;
 76	struct net_device		*netdev;
 77	struct usnic_fwd_dev		*ufdev;
 78	struct list_head		ib_dev_link;
 79	struct list_head		vf_dev_list;
 80	struct list_head		ctx_list;
 81	struct mutex			usdev_lock;
 82
 83	/* provisioning information */
 84	struct kref			vf_cnt;
 85	unsigned int			vf_res_cnt[USNIC_VNIC_RES_TYPE_MAX];
 86
 87	/* sysfs vars for QPN reporting */
 88	struct kobject *qpn_kobj;
 89};
 90
 91struct usnic_ib_vf {
 92	struct usnic_ib_dev		*pf;
 93	struct mutex			lock;
 94	struct usnic_vnic		*vnic;
 95	unsigned int			qp_grp_ref_cnt;
 96	struct usnic_ib_pd		*pd;
 97	struct list_head		link;
 98};
 99
100static inline
101struct usnic_ib_dev *to_usdev(struct ib_device *ibdev)
102{
103	return container_of(ibdev, struct usnic_ib_dev, ib_dev);
104}
105
106static inline
107struct usnic_ib_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
108{
109	return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
110}
111
112static inline
113struct usnic_ib_pd *to_upd(struct ib_pd *ibpd)
114{
115	return container_of(ibpd, struct usnic_ib_pd, ibpd);
116}
117
118static inline
119struct usnic_ib_ucontext *to_uucontext(struct ib_ucontext *ibucontext)
120{
121	return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
122}
123
124static inline
125struct usnic_ib_mr *to_umr(struct ib_mr *ibmr)
126{
127	return container_of(ibmr, struct usnic_ib_mr, ibmr);
128}
129void usnic_ib_log_vf(struct usnic_ib_vf *vf);
130
131#define UPDATE_PTR_LEFT(N, P, L)			\
132do {							\
133	L -= (N);					\
134	P += (N);					\
135} while (0)
136
137#endif /* USNIC_IB_H_ */