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RDMA/i40iw: Remove push code from i40iw 

The push feature does not work as expected in x722 and has historically
been disabled in the driver.

Purge all remaining code related to the push feature in i40iw.

Link: https://lore.kernel.org/r/20201125005616.1800-3-shiraz.saleem@intel.com
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Shiraz Saleem 2020-11-24 18:56:17 -06:00 committed by Jason Gunthorpe
parent 2b0a999ba0
commit 1d11d26cf0
8 changed files with 18 additions and 224 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/infiniband/hw/i40iw/i40iw.h
View File

@ -274,7 +274,6 @@ struct i40iw_device {
u8 max_sge;
u8 iw_status;
u8 send_term_ok;
bool push_mode; /* Initialized from parameter passed to driver */
/* x710 specific */
struct mutex pbl_mutex;

52
drivers/infiniband/hw/i40iw/i40iw_ctrl.c
View File

@ -819,46 +819,6 @@ static enum i40iw_status_code i40iw_sc_poll_for_cqp_op_done(
return ret_code;
}
/**
* i40iw_sc_manage_push_page - Handle push page
* @cqp: struct for cqp hw
* @info: push page info
* @scratch: u64 saved to be used during cqp completion
* @post_sq: flag for cqp db to ring
*/
static enum i40iw_status_code i40iw_sc_manage_push_page(
struct i40iw_sc_cqp *cqp,
struct i40iw_cqp_manage_push_page_info *info,
u64 scratch,
bool post_sq)
{
u64 *wqe;
u64 header;
if (info->push_idx >= I40IW_MAX_PUSH_PAGE_COUNT)
return I40IW_ERR_INVALID_PUSH_PAGE_INDEX;
wqe = i40iw_sc_cqp_get_next_send_wqe(cqp, scratch);
if (!wqe)
return I40IW_ERR_RING_FULL;
set_64bit_val(wqe, 16, info->qs_handle);
header = LS_64(info->push_idx, I40IW_CQPSQ_MPP_PPIDX) |
LS_64(I40IW_CQP_OP_MANAGE_PUSH_PAGES, I40IW_CQPSQ_OPCODE) |
LS_64(cqp->polarity, I40IW_CQPSQ_WQEVALID) |
LS_64(info->free_page, I40IW_CQPSQ_MPP_FREE_PAGE);
i40iw_insert_wqe_hdr(wqe, header);
i40iw_debug_buf(cqp->dev, I40IW_DEBUG_WQE, "MANAGE_PUSH_PAGES WQE",
wqe, I40IW_CQP_WQE_SIZE * 8);
if (post_sq)
i40iw_sc_cqp_post_sq(cqp);
return 0;
}
/**
* i40iw_sc_manage_hmc_pm_func_table - manage of function table
* @cqp: struct for cqp hw
@ -2859,9 +2819,7 @@ static enum i40iw_status_code i40iw_sc_qp_setctx(
LS_64(qp->rcv_tph_en, I40IWQPC_RCVTPHEN) |
LS_64(qp->xmit_tph_en, I40IWQPC_XMITTPHEN) |
LS_64(qp->rq_tph_en, I40IWQPC_RQTPHEN) |
LS_64(qp->sq_tph_en, I40IWQPC_SQTPHEN) |
LS_64(info->push_idx, I40IWQPC_PPIDX) |
LS_64(info->push_mode_en, I40IWQPC_PMENA);
LS_64(qp->sq_tph_en, I40IWQPC_SQTPHEN);
set_64bit_val(qp_ctx, 8, qp->sq_pa);
set_64bit_val(qp_ctx, 16, qp->rq_pa);
@ -4291,13 +4249,6 @@ static enum i40iw_status_code i40iw_exec_cqp_cmd(struct i40iw_sc_dev *dev,
pcmdinfo->in.u.add_arp_cache_entry.scratch,
pcmdinfo->post_sq);
break;
case OP_MANAGE_PUSH_PAGE:
status = i40iw_sc_manage_push_page(
pcmdinfo->in.u.manage_push_page.cqp,
&pcmdinfo->in.u.manage_push_page.info,
pcmdinfo->in.u.manage_push_page.scratch,
pcmdinfo->post_sq);
break;
case OP_UPDATE_PE_SDS:
/* case I40IW_CQP_OP_UPDATE_PE_SDS */
status = i40iw_update_pe_sds(
@ -5173,7 +5124,6 @@ static const struct i40iw_mr_ops iw_mr_ops = {
};
static const struct i40iw_cqp_misc_ops iw_cqp_misc_ops = {
.manage_push_page = i40iw_sc_manage_push_page,
.manage_hmc_pm_func_table = i40iw_sc_manage_hmc_pm_func_table,
.set_hmc_resource_profile = i40iw_sc_set_hmc_resource_profile,
.commit_fpm_values = i40iw_sc_commit_fpm_values,

35
drivers/infiniband/hw/i40iw/i40iw_d.h
View File

@ -40,11 +40,6 @@
#define I40IW_DB_ADDR_OFFSET (4 * 1024 * 1024 - 64 * 1024)
#define I40IW_VF_DB_ADDR_OFFSET (64 * 1024)
#define I40IW_PUSH_OFFSET (4 * 1024 * 1024)
#define I40IW_PF_FIRST_PUSH_PAGE_INDEX 16
#define I40IW_VF_PUSH_OFFSET ((8 + 64) * 1024)
#define I40IW_VF_FIRST_PUSH_PAGE_INDEX 2
#define I40IW_PE_DB_SIZE_4M 1
#define I40IW_PE_DB_SIZE_8M 2
@ -402,7 +397,6 @@
#define I40IW_CQP_OP_MANAGE_LOC_MAC_IP_TABLE 0x0e
#define I40IW_CQP_OP_MANAGE_ARP 0x0f
#define I40IW_CQP_OP_MANAGE_VF_PBLE_BP 0x10
#define I40IW_CQP_OP_MANAGE_PUSH_PAGES 0x11
#define I40IW_CQP_OP_QUERY_RDMA_FEATURES 0x12
#define I40IW_CQP_OP_UPLOAD_CONTEXT 0x13
#define I40IW_CQP_OP_ALLOCATE_LOC_MAC_IP_TABLE_ENTRY 0x14
@ -843,7 +837,6 @@
#define I40IW_CQPSQ_MVPBP_PD_PLPBA_MASK \
(0x1fffffffffffffffULL << I40IW_CQPSQ_MVPBP_PD_PLPBA_SHIFT)
/* Manage Push Page - MPP */
#define I40IW_INVALID_PUSH_PAGE_INDEX 0xffff
#define I40IW_CQPSQ_MPP_QS_HANDLE_SHIFT 0
@ -1352,9 +1345,6 @@
#define I40IWQPSQ_ADDFRAGCNT_SHIFT 38
#define I40IWQPSQ_ADDFRAGCNT_MASK (0x7ULL << I40IWQPSQ_ADDFRAGCNT_SHIFT)
#define I40IWQPSQ_PUSHWQE_SHIFT 56
#define I40IWQPSQ_PUSHWQE_MASK (1ULL << I40IWQPSQ_PUSHWQE_SHIFT)
#define I40IWQPSQ_STREAMMODE_SHIFT 58
#define I40IWQPSQ_STREAMMODE_MASK (1ULL << I40IWQPSQ_STREAMMODE_SHIFT)
@ -1740,18 +1730,17 @@ enum i40iw_alignment {
#define OP_MW_ALLOC 20
#define OP_QP_FLUSH_WQES 21
#define OP_ADD_ARP_CACHE_ENTRY 22
#define OP_MANAGE_PUSH_PAGE 23
#define OP_UPDATE_PE_SDS 24
#define OP_MANAGE_HMC_PM_FUNC_TABLE 25
#define OP_SUSPEND 26
#define OP_RESUME 27
#define OP_MANAGE_VF_PBLE_BP 28
#define OP_QUERY_FPM_VALUES 29
#define OP_COMMIT_FPM_VALUES 30
#define OP_REQUESTED_COMMANDS 31
#define OP_COMPLETED_COMMANDS 32
#define OP_GEN_AE 33
#define OP_QUERY_RDMA_FEATURES 34
#define OP_SIZE_CQP_STAT_ARRAY 35
#define OP_UPDATE_PE_SDS 23
#define OP_MANAGE_HMC_PM_FUNC_TABLE 24
#define OP_SUSPEND 25
#define OP_RESUME 26
#define OP_MANAGE_VF_PBLE_BP 27
#define OP_QUERY_FPM_VALUES 28
#define OP_COMMIT_FPM_VALUES 29
#define OP_REQUESTED_COMMANDS 30
#define OP_COMPLETED_COMMANDS 31
#define OP_GEN_AE 32
#define OP_QUERY_RDMA_FEATURES 33
#define OP_SIZE_CQP_STAT_ARRAY 34
#endif

1
drivers/infiniband/hw/i40iw/i40iw_status.h
View File

@ -61,7 +61,6 @@ enum i40iw_status_code {
I40IW_ERR_QUEUE_EMPTY = -22,
I40IW_ERR_INVALID_ALIGNMENT = -23,
I40IW_ERR_FLUSHED_QUEUE = -24,
I40IW_ERR_INVALID_PUSH_PAGE_INDEX = -25,
I40IW_ERR_INVALID_INLINE_DATA_SIZE = -26,
I40IW_ERR_TIMEOUT = -27,
I40IW_ERR_OPCODE_MISMATCH = -28,

18
drivers/infiniband/hw/i40iw/i40iw_type.h
View File

@ -387,7 +387,6 @@ struct i40iw_sc_qp {
u8 *q2_buf;
u64 qp_compl_ctx;
u16 qs_handle;
u16 push_idx;
u8 sq_tph_val;
u8 rq_tph_val;
u8 qp_state;
@ -749,8 +748,6 @@ struct i40iw_qp_host_ctx_info {
struct i40iwarp_offload_info *iwarp_info;
u32 send_cq_num;
u32 rcv_cq_num;
u16 push_idx;
bool push_mode_en;
bool tcp_info_valid;
bool iwarp_info_valid;
bool err_rq_idx_valid;
@ -937,12 +934,6 @@ struct i40iw_local_mac_ipaddr_entry_info {
u8 entry_idx;
};
struct i40iw_cqp_manage_push_page_info {
u32 push_idx;
u16 qs_handle;
u8 free_page;
};
struct i40iw_qp_flush_info {
u16 sq_minor_code;
u16 sq_major_code;
@ -1114,9 +1105,6 @@ struct i40iw_mr_ops {
};
struct i40iw_cqp_misc_ops {
enum i40iw_status_code (*manage_push_page)(struct i40iw_sc_cqp *,
struct i40iw_cqp_manage_push_page_info *,
u64, bool);
enum i40iw_status_code (*manage_hmc_pm_func_table)(struct i40iw_sc_cqp *,
u64, u8, bool, bool);
enum i40iw_status_code (*set_hmc_resource_profile)(struct i40iw_sc_cqp *,
@ -1253,12 +1241,6 @@ struct cqp_info {
u64 scratch;
} manage_vf_pble_bp;
struct {
struct i40iw_sc_cqp *cqp;
struct i40iw_cqp_manage_push_page_info info;
u64 scratch;
} manage_push_page;
struct {
struct i40iw_sc_dev *dev;
struct i40iw_upload_context_info info;

33
drivers/infiniband/hw/i40iw/i40iw_uk.c
View File

@ -114,17 +114,6 @@ void i40iw_qp_post_wr(struct i40iw_qp_uk *qp)
qp->initial_ring.head = qp->sq_ring.head;
}
/**
* i40iw_qp_ring_push_db - ring qp doorbell
* @qp: hw qp ptr
* @wqe_idx: wqe index
*/
static void i40iw_qp_ring_push_db(struct i40iw_qp_uk *qp, u32 wqe_idx)
{
set_32bit_val(qp->push_db, 0, LS_32((wqe_idx >> 2), I40E_PFPE_WQEALLOC_WQE_DESC_INDEX) | qp->qp_id);
qp->initial_ring.head = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
}
/**
* i40iw_qp_get_next_send_wqe - return next wqe ptr
* @qp: hw qp ptr
@ -426,7 +415,6 @@ static enum i40iw_status_code i40iw_inline_rdma_write(struct i40iw_qp_uk *qp,
u64 *wqe;
u8 *dest, *src;
struct i40iw_inline_rdma_write *op_info;
u64 *push;
u64 header = 0;
u32 wqe_idx;
enum i40iw_status_code ret_code;
@ -453,7 +441,6 @@ static enum i40iw_status_code i40iw_inline_rdma_write(struct i40iw_qp_uk *qp,
LS_64(I40IWQP_OP_RDMA_WRITE, I40IWQPSQ_OPCODE) |
LS_64(op_info->len, I40IWQPSQ_INLINEDATALEN) |
LS_64(1, I40IWQPSQ_INLINEDATAFLAG) |
LS_64((qp->push_db ? 1 : 0), I40IWQPSQ_PUSHWQE) |
LS_64(read_fence, I40IWQPSQ_READFENCE) |
LS_64(info->local_fence, I40IWQPSQ_LOCALFENCE) |
LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
@ -475,14 +462,8 @@ static enum i40iw_status_code i40iw_inline_rdma_write(struct i40iw_qp_uk *qp,
set_64bit_val(wqe, 24, header);
if (qp->push_db) {
push = (u64 *)((uintptr_t)qp->push_wqe + (wqe_idx & 0x3) * 0x20);
memcpy(push, wqe, (op_info->len > 16) ? op_info->len + 16 : 32);
i40iw_qp_ring_push_db(qp, wqe_idx);
} else {
if (post_sq)
i40iw_qp_post_wr(qp);
}
return 0;
}
@ -507,7 +488,6 @@ static enum i40iw_status_code i40iw_inline_send(struct i40iw_qp_uk *qp,
enum i40iw_status_code ret_code;
bool read_fence = false;
u8 wqe_size;
u64 *push;
op_info = &info->op.inline_send;
if (op_info->len > I40IW_MAX_INLINE_DATA_SIZE)
@ -526,7 +506,6 @@ static enum i40iw_status_code i40iw_inline_send(struct i40iw_qp_uk *qp,
LS_64(info->op_type, I40IWQPSQ_OPCODE) |
LS_64(op_info->len, I40IWQPSQ_INLINEDATALEN) |
LS_64(1, I40IWQPSQ_INLINEDATAFLAG) |
LS_64((qp->push_db ? 1 : 0), I40IWQPSQ_PUSHWQE) |
LS_64(read_fence, I40IWQPSQ_READFENCE) |
LS_64(info->local_fence, I40IWQPSQ_LOCALFENCE) |
LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
@ -548,14 +527,8 @@ static enum i40iw_status_code i40iw_inline_send(struct i40iw_qp_uk *qp,
set_64bit_val(wqe, 24, header);
if (qp->push_db) {
push = (u64 *)((uintptr_t)qp->push_wqe + (wqe_idx & 0x3) * 0x20);
memcpy(push, wqe, (op_info->len > 16) ? op_info->len + 16 : 32);
i40iw_qp_ring_push_db(qp, wqe_idx);
} else {
if (post_sq)
i40iw_qp_post_wr(qp);
}
return 0;
}
@ -772,7 +745,6 @@ static enum i40iw_status_code i40iw_cq_poll_completion(struct i40iw_cq_uk *cq,
q_type = (u8)RS_64(qword3, I40IW_CQ_SQ);
info->error = (bool)RS_64(qword3, I40IW_CQ_ERROR);
info->push_dropped = (bool)RS_64(qword3, I40IWCQ_PSHDROP);
if (info->error) {
info->comp_status = I40IW_COMPL_STATUS_FLUSHED;
info->major_err = (bool)RS_64(qword3, I40IW_CQ_MAJERR);
@ -951,7 +923,6 @@ enum i40iw_status_code i40iw_get_rqdepth(u32 rq_size, u8 shift, u32 *rqdepth)
static const struct i40iw_qp_uk_ops iw_qp_uk_ops = {
.iw_qp_post_wr = i40iw_qp_post_wr,
.iw_qp_ring_push_db = i40iw_qp_ring_push_db,
.iw_rdma_write = i40iw_rdma_write,
.iw_rdma_read = i40iw_rdma_read,
.iw_send = i40iw_send,
@ -1009,11 +980,7 @@ enum i40iw_status_code i40iw_qp_uk_init(struct i40iw_qp_uk *qp,
qp->wqe_alloc_reg = info->wqe_alloc_reg;
qp->qp_id = info->qp_id;
qp->sq_size = info->sq_size;
qp->push_db = info->push_db;
qp->push_wqe = info->push_wqe;
qp->max_sq_frag_cnt = info->max_sq_frag_cnt;
sq_ring_size = qp->sq_size << sqshift;

8
drivers/infiniband/hw/i40iw/i40iw_user.h
View File

@ -64,13 +64,11 @@ enum i40iw_device_capabilities_const {
I40IW_MAX_SGE_RD = 1,
I40IW_MAX_OUTBOUND_MESSAGE_SIZE = 2147483647,
I40IW_MAX_INBOUND_MESSAGE_SIZE = 2147483647,
I40IW_MAX_PUSH_PAGE_COUNT = 4096,
I40IW_MAX_PE_ENABLED_VF_COUNT = 32,
I40IW_MAX_VF_FPM_ID = 47,
I40IW_MAX_VF_PER_PF = 127,
I40IW_MAX_SQ_PAYLOAD_SIZE = 2145386496,
I40IW_MAX_INLINE_DATA_SIZE = 48,
I40IW_MAX_PUSHMODE_INLINE_DATA_SIZE = 48,
I40IW_MAX_IRD_SIZE = 64,
I40IW_MAX_ORD_SIZE = 127,
I40IW_MAX_WQ_ENTRIES = 2048,
@ -272,7 +270,6 @@ struct i40iw_cq_poll_info {
u16 minor_err;
u8 op_type;
bool stag_invalid_set;
bool push_dropped;
bool error;
bool is_srq;
bool solicited_event;
@ -280,7 +277,6 @@ struct i40iw_cq_poll_info {
struct i40iw_qp_uk_ops {
void (*iw_qp_post_wr)(struct i40iw_qp_uk *);
void (*iw_qp_ring_push_db)(struct i40iw_qp_uk *, u32);
enum i40iw_status_code (*iw_rdma_write)(struct i40iw_qp_uk *,
struct i40iw_post_sq_info *, bool);
enum i40iw_status_code (*iw_rdma_read)(struct i40iw_qp_uk *,
@ -340,8 +336,6 @@ struct i40iw_qp_uk {
struct i40iw_sq_uk_wr_trk_info *sq_wrtrk_array;
u64 *rq_wrid_array;
u64 *shadow_area;
u32 *push_db;
u64 *push_wqe;
struct i40iw_ring sq_ring;
struct i40iw_ring rq_ring;
struct i40iw_ring initial_ring;
@ -381,8 +375,6 @@ struct i40iw_qp_uk_init_info {
u64 *shadow_area;
struct i40iw_sq_uk_wr_trk_info *sq_wrtrk_array;
u64 *rq_wrid_array;
u32 *push_db;
u64 *push_wqe;
u32 qp_id;
u32 sq_size;
u32 rq_size;

86
drivers/infiniband/hw/i40iw/i40iw_verbs.c
View File

@ -179,78 +179,6 @@ static int i40iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
pgprot_noncached(vma->vm_page_prot), NULL);
}
/**
* i40iw_alloc_push_page - allocate a push page for qp
* @iwdev: iwarp device
* @qp: hardware control qp
*/
static void i40iw_alloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp)
{
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
enum i40iw_status_code status;
if (qp->push_idx != I40IW_INVALID_PUSH_PAGE_INDEX)
return;
cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
if (!cqp_request)
return;
atomic_inc(&cqp_request->refcount);
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE;
cqp_info->post_sq = 1;
cqp_info->in.u.manage_push_page.info.qs_handle = qp->qs_handle;
cqp_info->in.u.manage_push_page.info.free_page = 0;
cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp;
cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (!status)
qp->push_idx = cqp_request->compl_info.op_ret_val;
else
i40iw_pr_err("CQP-OP Push page fail");
i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
}
/**
* i40iw_dealloc_push_page - free a push page for qp
* @iwdev: iwarp device
* @qp: hardware control qp
*/
static void i40iw_dealloc_push_page(struct i40iw_device *iwdev, struct i40iw_sc_qp *qp)
{
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
enum i40iw_status_code status;
if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX)
return;
cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
if (!cqp_request)
return;
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = OP_MANAGE_PUSH_PAGE;
cqp_info->post_sq = 1;
cqp_info->in.u.manage_push_page.info.push_idx = qp->push_idx;
cqp_info->in.u.manage_push_page.info.qs_handle = qp->qs_handle;
cqp_info->in.u.manage_push_page.info.free_page = 1;
cqp_info->in.u.manage_push_page.cqp = &iwdev->cqp.sc_cqp;
cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (!status)
qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
else
i40iw_pr_err("CQP-OP Push page fail");
}
/**
* i40iw_alloc_pd - allocate protection domain
* @pd: PD pointer
@ -348,7 +276,6 @@ void i40iw_free_qp_resources(struct i40iw_qp *iwqp)
u32 qp_num = iwqp->ibqp.qp_num;
i40iw_ieq_cleanup_qp(iwdev->vsi.ieq, &iwqp->sc_qp);
i40iw_dealloc_push_page(iwdev, &iwqp->sc_qp);
if (qp_num)
i40iw_free_resource(iwdev, iwdev->allocated_qps, qp_num);
if (iwpbl->pbl_allocated)
@ -561,8 +488,6 @@ static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd,
qp = &iwqp->sc_qp;
qp->back_qp = (void *)iwqp;
qp->push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
iwqp->iwdev = iwdev;
iwqp->ctx_info.iwarp_info = &iwqp->iwarp_info;
@ -606,8 +531,6 @@ static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd,
err_code = -EOPNOTSUPP;
goto error;
}
if (iwdev->push_mode)
i40iw_alloc_push_page(iwdev, qp);
if (udata) {
err_code = ib_copy_from_udata(&req, udata, sizeof(req));
if (err_code) {
@ -666,13 +589,6 @@ static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd,
ctx_info->iwarp_info_valid = true;
ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id;
ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id;
if (qp->push_idx == I40IW_INVALID_PUSH_PAGE_INDEX) {
ctx_info->push_mode_en = false;
} else {
ctx_info->push_mode_en = true;
ctx_info->push_idx = qp->push_idx;
}
ret = dev->iw_priv_qp_ops->qp_setctx(&iwqp->sc_qp,
(u64 *)iwqp->host_ctx.va,
ctx_info);
@ -712,7 +628,7 @@ static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd,
uresp.actual_sq_size = sq_size;
uresp.actual_rq_size = rq_size;
uresp.qp_id = qp_num;
uresp.push_idx = qp->push_idx;
uresp.push_idx = I40IW_INVALID_PUSH_PAGE_INDEX;
err_code = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
if (err_code) {
i40iw_pr_err("copy_to_udata failed\n");