From e3cf00d0a87f025db5855a43a67c67a41fa79fef Mon Sep 17 00:00:00 2001 From: Upinder Malhi Date: Tue, 10 Sep 2013 03:38:16 +0000 Subject: IB/usnic: Add Cisco VIC low-level hardware driver This adds a driver that allows userspace to use UD-like QPs over a proprietary Cisco transport with Cisco's Virtual Interface Cards (VICs), including VIC 1240 and 1280 cards. Signed-off-by: Upinder Malhi Signed-off-by: Christian Benvenuti Signed-off-by: Roland Dreier --- drivers/infiniband/hw/usnic/usnic_ib_qp_grp.h | 95 +++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 drivers/infiniband/hw/usnic/usnic_ib_qp_grp.h (limited to 'drivers/infiniband/hw/usnic/usnic_ib_qp_grp.h') diff --git a/drivers/infiniband/hw/usnic/usnic_ib_qp_grp.h b/drivers/infiniband/hw/usnic/usnic_ib_qp_grp.h new file mode 100644 index 000000000000..6416a956dc4a --- /dev/null +++ b/drivers/infiniband/hw/usnic/usnic_ib_qp_grp.h @@ -0,0 +1,95 @@ +/* + * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * 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. + * + */ + +#ifndef USNIC_IB_QP_GRP_H_ +#define USNIC_IB_QP_GRP_H_ + +#include + +#include "usnic_ib.h" +#include "usnic_abi.h" +#include "usnic_fwd.h" +#include "usnic_vnic.h" + +#define MAX_QP_GRP_FILTERS 10 +#define DFLT_FILTER_IDX 0 + +/* + * The qp group struct represents all the hw resources needed to present a ib_qp + */ +struct usnic_ib_qp_grp { + struct ib_qp ibqp; + enum ib_qp_state state; + int grp_id; + + struct usnic_fwd_dev *ufdev; + short unsigned filter_cnt; + struct usnic_fwd_filter filters[MAX_QP_GRP_FILTERS]; + struct list_head filter_hndls; + enum usnic_transport_type transport; + struct usnic_ib_ucontext *ctx; + + struct usnic_vnic_res_chunk **res_chunk_list; + + pid_t owner_pid; + struct usnic_ib_vf *vf; + struct list_head link; + + spinlock_t lock; + + struct kobject kobj; +}; + +static const struct +usnic_vnic_res_spec min_transport_spec[USNIC_TRANSPORT_MAX] = { + { /*USNIC_TRANSPORT_UNKNOWN*/ + .resources = { + {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, + }, + }, + { /*USNIC_TRANSPORT_ROCE_CUSTOM*/ + .resources = { + {.type = USNIC_VNIC_RES_TYPE_WQ, .cnt = 1,}, + {.type = USNIC_VNIC_RES_TYPE_RQ, .cnt = 1,}, + {.type = USNIC_VNIC_RES_TYPE_CQ, .cnt = 1,}, + {.type = USNIC_VNIC_RES_TYPE_EOL, .cnt = 0,}, + }, + }, +}; + +const char *usnic_ib_qp_grp_state_to_string(enum ib_qp_state state); +int usnic_ib_qp_grp_dump_hdr(char *buf, int buf_sz); +int usnic_ib_qp_grp_dump_rows(void *obj, char *buf, int buf_sz); +struct usnic_ib_qp_grp * +usnic_ib_qp_grp_create(struct usnic_fwd_dev *ufdev, struct usnic_ib_vf *vf, + struct usnic_ib_pd *pd, + struct usnic_vnic_res_spec *res_spec, + enum usnic_transport_type transport); +void usnic_ib_qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp); +int usnic_ib_qp_grp_modify(struct usnic_ib_qp_grp *qp_grp, + enum ib_qp_state new_state, + struct usnic_fwd_filter *fwd_filter); +struct usnic_vnic_res_chunk +*usnic_ib_qp_grp_get_chunk(struct usnic_ib_qp_grp *qp_grp, + enum usnic_vnic_res_type type); +static inline +struct usnic_ib_qp_grp *to_uqp_grp(struct ib_qp *ibqp) +{ + return container_of(ibqp, struct usnic_ib_qp_grp, ibqp); +} +#endif /* USNIC_IB_QP_GRP_H_ */ -- cgit v1.2.3-59-g8ed1b