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RDMA/siw: Use the common mmap_xa helpers 

Remove the functions related to managing the mmap_xa database.  This code
is now common in ib_core.

Link: https://lore.kernel.org/r/20191030094417.16866-6-michal.kalderon@marvell.com
Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com>
Reviewed-by: Bernard Metzler <bmt@zurich.ibm.com>
Tested-by: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Michal Kalderon 2019-10-30 11:44:14 +02:00 committed by Jason Gunthorpe
parent e84d3c184e
commit 11f1a75567
4 changed files with 115 additions and 103 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/infiniband/sw/siw/siw.h
View File

@ -221,7 +221,7 @@ struct siw_cq {
u32 cq_get;
u32 num_cqe;
bool kernel_verbs;
u32 xa_cq_index; /* mmap information for CQE array */
struct rdma_user_mmap_entry *cq_entry; /* mmap info for CQE array */
u32 id; /* For debugging only */
};
@ -264,7 +264,7 @@ struct siw_srq {
u32 rq_put;
u32 rq_get;
u32 num_rqe; /* max # of wqe's allowed */
u32 xa_srq_index; /* mmap information for SRQ array */
struct rdma_user_mmap_entry *srq_entry; /* mmap info for SRQ array */
char armed; /* inform user if limit hit */
char kernel_verbs; /* '1' if kernel client */
};
@ -478,8 +478,8 @@ struct siw_qp {
u8 layer : 4, etype : 4;
u8 ecode;
} term_info;
u32 xa_sq_index; /* mmap information for SQE array */
u32 xa_rq_index; /* mmap information for RQE array */
struct rdma_user_mmap_entry *sq_entry; /* mmap info for SQE array */
struct rdma_user_mmap_entry *rq_entry; /* mmap info for RQE array */
struct rcu_head rcu;
};
@ -504,6 +504,11 @@ struct iwarp_msg_info {
int (*rx_data)(struct siw_qp *qp);
};
struct siw_user_mmap_entry {
struct rdma_user_mmap_entry rdma_entry;
void *address;
};
/* Global siw parameters. Currently set in siw_main.c */
extern const bool zcopy_tx;
extern const bool try_gso;
@ -608,6 +613,12 @@ static inline struct siw_mr *to_siw_mr(struct ib_mr *base_mr)
return container_of(base_mr, struct siw_mr, base_mr);
}
static inline struct siw_user_mmap_entry *
to_siw_mmap_entry(struct rdma_user_mmap_entry *rdma_mmap)
{
return container_of(rdma_mmap, struct siw_user_mmap_entry, rdma_entry);
}
static inline struct siw_qp *siw_qp_id2obj(struct siw_device *sdev, int id)
{
struct siw_qp *qp;

1
drivers/infiniband/sw/siw/siw_main.c
View File

@ -279,6 +279,7 @@ static const struct ib_device_ops siw_device_ops = {
.iw_rem_ref = siw_qp_put_ref,
.map_mr_sg = siw_map_mr_sg,
.mmap = siw_mmap,
.mmap_free = siw_mmap_free,
.modify_qp = siw_verbs_modify_qp,
.modify_srq = siw_modify_srq,
.poll_cq = siw_poll_cq,

197
drivers/infiniband/sw/siw/siw_verbs.c
View File

@ -34,44 +34,19 @@ static char ib_qp_state_to_string[IB_QPS_ERR + 1][sizeof("RESET")] = {
[IB_QPS_ERR] = "ERR"
};
static u32 siw_create_uobj(struct siw_ucontext *uctx, void *vaddr, u32 size)
void siw_mmap_free(struct rdma_user_mmap_entry *rdma_entry)
{
struct siw_uobj *uobj;
struct xa_limit limit = XA_LIMIT(0, SIW_UOBJ_MAX_KEY);
u32 key;
struct siw_user_mmap_entry *entry = to_siw_mmap_entry(rdma_entry);
uobj = kzalloc(sizeof(*uobj), GFP_KERNEL);
if (!uobj)
return SIW_INVAL_UOBJ_KEY;
if (xa_alloc_cyclic(&uctx->xa, &key, uobj, limit, &uctx->uobj_nextkey,
GFP_KERNEL) < 0) {
kfree(uobj);
return SIW_INVAL_UOBJ_KEY;
}
uobj->size = PAGE_ALIGN(size);
uobj->addr = vaddr;
return key;
}
static struct siw_uobj *siw_get_uobj(struct siw_ucontext *uctx,
unsigned long off, u32 size)
{
struct siw_uobj *uobj = xa_load(&uctx->xa, off);
if (uobj && uobj->size == size)
return uobj;
return NULL;
kfree(entry);
}
int siw_mmap(struct ib_ucontext *ctx, struct vm_area_struct *vma)
{
struct siw_ucontext *uctx = to_siw_ctx(ctx);
struct siw_uobj *uobj;
unsigned long off = vma->vm_pgoff;
int size = vma->vm_end - vma->vm_start;
size_t size = vma->vm_end - vma->vm_start;
struct rdma_user_mmap_entry *rdma_entry;
struct siw_user_mmap_entry *entry;
int rv = -EINVAL;
/*
@ -79,18 +54,25 @@ int siw_mmap(struct ib_ucontext *ctx, struct vm_area_struct *vma)
*/
if (vma->vm_start & (PAGE_SIZE - 1)) {
pr_warn("siw: mmap not page aligned\n");
return -EINVAL;
}
rdma_entry = rdma_user_mmap_entry_get(&uctx->base_ucontext, vma);
if (!rdma_entry) {
siw_dbg(&uctx->sdev->base_dev, "mmap lookup failed: %lu, %#zx\n",
vma->vm_pgoff, size);
return -EINVAL;
}
entry = to_siw_mmap_entry(rdma_entry);
rv = remap_vmalloc_range(vma, entry->address, 0);
if (rv) {
pr_warn("remap_vmalloc_range failed: %lu, %zu\n", vma->vm_pgoff,
size);
goto out;
}
uobj = siw_get_uobj(uctx, off, size);
if (!uobj) {
siw_dbg(&uctx->sdev->base_dev, "mmap lookup failed: %lu, %u\n",
off, size);
goto out;
}
rv = remap_vmalloc_range(vma, uobj->addr, 0);
if (rv)
pr_warn("remap_vmalloc_range failed: %lu, %u\n", off, size);
out:
rdma_user_mmap_entry_put(rdma_entry);
return rv;
}
@ -105,7 +87,7 @@ int siw_alloc_ucontext(struct ib_ucontext *base_ctx, struct ib_udata *udata)
rv = -ENOMEM;
goto err_out;
}
xa_init_flags(&ctx->xa, XA_FLAGS_ALLOC);
ctx->uobj_nextkey = 0;
ctx->sdev = sdev;
@ -135,19 +117,7 @@ err_out:
void siw_dealloc_ucontext(struct ib_ucontext *base_ctx)
{
struct siw_ucontext *uctx = to_siw_ctx(base_ctx);
void *entry;
unsigned long index;
/*
* Make sure all user mmap objects are gone. Since QP, CQ
* and SRQ destroy routines destroy related objects, nothing
* should be found here.
*/
xa_for_each(&uctx->xa, index, entry) {
kfree(xa_erase(&uctx->xa, index));
pr_warn("siw: dropping orphaned uobj at %lu\n", index);
}
xa_destroy(&uctx->xa);
atomic_dec(&uctx->sdev->num_ctx);
}
@ -293,6 +263,33 @@ void siw_qp_put_ref(struct ib_qp *base_qp)
siw_qp_put(to_siw_qp(base_qp));
}
static struct rdma_user_mmap_entry *
siw_mmap_entry_insert(struct siw_ucontext *uctx,
void *address, size_t length,
u64 *offset)
{
struct siw_user_mmap_entry *entry = kzalloc(sizeof(*entry), GFP_KERNEL);
int rv;
*offset = SIW_INVAL_UOBJ_KEY;
if (!entry)
return NULL;
entry->address = address;
rv = rdma_user_mmap_entry_insert(&uctx->base_ucontext,
&entry->rdma_entry,
length);
if (rv) {
kfree(entry);
return NULL;
}
*offset = rdma_user_mmap_get_offset(&entry->rdma_entry);
return &entry->rdma_entry;
}
/*
* siw_create_qp()
*
@ -317,6 +314,7 @@ struct ib_qp *siw_create_qp(struct ib_pd *pd,
struct siw_cq *scq = NULL, *rcq = NULL;
unsigned long flags;
int num_sqe, num_rqe, rv = 0;
size_t length;
siw_dbg(base_dev, "create new QP\n");
@ -380,8 +378,6 @@ struct ib_qp *siw_create_qp(struct ib_pd *pd,
spin_lock_init(&qp->orq_lock);
qp->kernel_verbs = !udata;
qp->xa_sq_index = SIW_INVAL_UOBJ_KEY;
qp->xa_rq_index = SIW_INVAL_UOBJ_KEY;
rv = siw_qp_add(sdev, qp);
if (rv)
@ -458,22 +454,27 @@ struct ib_qp *siw_create_qp(struct ib_pd *pd,
uresp.qp_id = qp_id(qp);
if (qp->sendq) {
qp->xa_sq_index =
siw_create_uobj(uctx, qp->sendq,
num_sqe * sizeof(struct siw_sqe));
length = num_sqe * sizeof(struct siw_sqe);
qp->sq_entry =
siw_mmap_entry_insert(uctx, qp->sendq,
length, &uresp.sq_key);
if (!qp->sq_entry) {
rv = -ENOMEM;
goto err_out_xa;
}
}
if (qp->recvq) {
qp->xa_rq_index =
siw_create_uobj(uctx, qp->recvq,
num_rqe * sizeof(struct siw_rqe));
length = num_rqe * sizeof(struct siw_rqe);
qp->rq_entry =
siw_mmap_entry_insert(uctx, qp->recvq,
length, &uresp.rq_key);
if (!qp->rq_entry) {
uresp.sq_key = SIW_INVAL_UOBJ_KEY;
rv = -ENOMEM;
goto err_out_xa;
}
}
if (qp->xa_sq_index == SIW_INVAL_UOBJ_KEY ||
qp->xa_rq_index == SIW_INVAL_UOBJ_KEY) {
rv = -ENOMEM;
goto err_out_xa;
}
uresp.sq_key = qp->xa_sq_index << PAGE_SHIFT;
uresp.rq_key = qp->xa_rq_index << PAGE_SHIFT;
if (udata->outlen < sizeof(uresp)) {
rv = -EINVAL;
@ -501,11 +502,10 @@ err_out:
kfree(siw_base_qp);
if (qp) {
if (qp->xa_sq_index != SIW_INVAL_UOBJ_KEY)
kfree(xa_erase(&uctx->xa, qp->xa_sq_index));
if (qp->xa_rq_index != SIW_INVAL_UOBJ_KEY)
kfree(xa_erase(&uctx->xa, qp->xa_rq_index));
if (uctx) {
rdma_user_mmap_entry_remove(qp->sq_entry);
rdma_user_mmap_entry_remove(qp->rq_entry);
}
vfree(qp->sendq);
vfree(qp->recvq);
kfree(qp);
@ -619,10 +619,10 @@ int siw_destroy_qp(struct ib_qp *base_qp, struct ib_udata *udata)
qp->attrs.flags |= SIW_QP_IN_DESTROY;
qp->rx_stream.rx_suspend = 1;
if (uctx && qp->xa_sq_index != SIW_INVAL_UOBJ_KEY)
kfree(xa_erase(&uctx->xa, qp->xa_sq_index));
if (uctx && qp->xa_rq_index != SIW_INVAL_UOBJ_KEY)
kfree(xa_erase(&uctx->xa, qp->xa_rq_index));
if (uctx) {
rdma_user_mmap_entry_remove(qp->sq_entry);
rdma_user_mmap_entry_remove(qp->rq_entry);
}
down_write(&qp->state_lock);
@ -1092,8 +1092,8 @@ void siw_destroy_cq(struct ib_cq *base_cq, struct ib_udata *udata)
siw_cq_flush(cq);
if (ctx && cq->xa_cq_index != SIW_INVAL_UOBJ_KEY)
kfree(xa_erase(&ctx->xa, cq->xa_cq_index));
if (ctx)
rdma_user_mmap_entry_remove(cq->cq_entry);
atomic_dec(&sdev->num_cq);
@ -1130,7 +1130,6 @@ int siw_create_cq(struct ib_cq *base_cq, const struct ib_cq_init_attr *attr,
size = roundup_pow_of_two(size);
cq->base_cq.cqe = size;
cq->num_cqe = size;
cq->xa_cq_index = SIW_INVAL_UOBJ_KEY;
if (!udata) {
cq->kernel_verbs = 1;
@ -1156,16 +1155,17 @@ int siw_create_cq(struct ib_cq *base_cq, const struct ib_cq_init_attr *attr,
struct siw_ucontext *ctx =
rdma_udata_to_drv_context(udata, struct siw_ucontext,
base_ucontext);
size_t length = size * sizeof(struct siw_cqe) +
sizeof(struct siw_cq_ctrl);
cq->xa_cq_index =
siw_create_uobj(ctx, cq->queue,
size * sizeof(struct siw_cqe) +
sizeof(struct siw_cq_ctrl));
if (cq->xa_cq_index == SIW_INVAL_UOBJ_KEY) {
cq->cq_entry =
siw_mmap_entry_insert(ctx, cq->queue,
length, &uresp.cq_key);
if (!cq->cq_entry) {
rv = -ENOMEM;
goto err_out;
}
uresp.cq_key = cq->xa_cq_index << PAGE_SHIFT;
uresp.cq_id = cq->id;
uresp.num_cqe = size;
@ -1186,8 +1186,8 @@ err_out:
struct siw_ucontext *ctx =
rdma_udata_to_drv_context(udata, struct siw_ucontext,
base_ucontext);
if (cq->xa_cq_index != SIW_INVAL_UOBJ_KEY)
kfree(xa_erase(&ctx->xa, cq->xa_cq_index));
if (ctx)
rdma_user_mmap_entry_remove(cq->cq_entry);
vfree(cq->queue);
}
atomic_dec(&sdev->num_cq);
@ -1591,7 +1591,6 @@ int siw_create_srq(struct ib_srq *base_srq,
}
srq->max_sge = attrs->max_sge;
srq->num_rqe = roundup_pow_of_two(attrs->max_wr);
srq->xa_srq_index = SIW_INVAL_UOBJ_KEY;
srq->limit = attrs->srq_limit;
if (srq->limit)
srq->armed = 1;
@ -1610,15 +1609,16 @@ int siw_create_srq(struct ib_srq *base_srq,
}
if (udata) {
struct siw_uresp_create_srq uresp = {};
size_t length = srq->num_rqe * sizeof(struct siw_rqe);
srq->xa_srq_index = siw_create_uobj(
ctx, srq->recvq, srq->num_rqe * sizeof(struct siw_rqe));
if (srq->xa_srq_index == SIW_INVAL_UOBJ_KEY) {
srq->srq_entry =
siw_mmap_entry_insert(ctx, srq->recvq,
length, &uresp.srq_key);
if (!srq->srq_entry) {
rv = -ENOMEM;
goto err_out;
}
uresp.srq_key = srq->xa_srq_index;
uresp.num_rqe = srq->num_rqe;
if (udata->outlen < sizeof(uresp)) {
@ -1637,8 +1637,8 @@ int siw_create_srq(struct ib_srq *base_srq,
err_out:
if (srq->recvq) {
if (ctx && srq->xa_srq_index != SIW_INVAL_UOBJ_KEY)
kfree(xa_erase(&ctx->xa, srq->xa_srq_index));
if (ctx)
rdma_user_mmap_entry_remove(srq->srq_entry);
vfree(srq->recvq);
}
atomic_dec(&sdev->num_srq);
@ -1724,9 +1724,8 @@ void siw_destroy_srq(struct ib_srq *base_srq, struct ib_udata *udata)
rdma_udata_to_drv_context(udata, struct siw_ucontext,
base_ucontext);
if (ctx && srq->xa_srq_index != SIW_INVAL_UOBJ_KEY)
kfree(xa_erase(&ctx->xa, srq->xa_srq_index));
if (ctx)
rdma_user_mmap_entry_remove(srq->srq_entry);
vfree(srq->recvq);
atomic_dec(&sdev->num_srq);
}

1
drivers/infiniband/sw/siw/siw_verbs.h
View File

@ -83,6 +83,7 @@ void siw_destroy_srq(struct ib_srq *base_srq, struct ib_udata *udata);
int siw_post_srq_recv(struct ib_srq *base_srq, const struct ib_recv_wr *wr,
const struct ib_recv_wr **bad_wr);
int siw_mmap(struct ib_ucontext *ctx, struct vm_area_struct *vma);
void siw_mmap_free(struct rdma_user_mmap_entry *rdma_entry);
void siw_qp_event(struct siw_qp *qp, enum ib_event_type type);
void siw_cq_event(struct siw_cq *cq, enum ib_event_type type);
void siw_srq_event(struct siw_srq *srq, enum ib_event_type type);