diff options
author | Michal Kalderon <michal.kalderon@marvell.com> | 2019-10-30 12:44:14 +0300 |
---|---|---|
committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-11-06 20:08:01 +0300 |
commit | 11f1a75567c43e1f9e01b37ab524b770a0a0ca78 (patch) | |
tree | dd8485544e60a0760ea66f1d2392ff84694899e3 /drivers | |
parent | e84d3c184e7967559d511e4569c111a02d64031e (diff) | |
download | linux-11f1a75567c43e1f9e01b37ab524b770a0a0ca78.tar.xz |
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>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/infiniband/sw/siw/siw.h | 19 | ||||
-rw-r--r-- | drivers/infiniband/sw/siw/siw_main.c | 1 | ||||
-rw-r--r-- | drivers/infiniband/sw/siw/siw_verbs.c | 195 | ||||
-rw-r--r-- | drivers/infiniband/sw/siw/siw_verbs.h | 1 |
4 files changed, 114 insertions, 102 deletions
diff --git a/drivers/infiniband/sw/siw/siw.h b/drivers/infiniband/sw/siw/siw.h index 1ea3ed249e7b..f851afb5632e 100644 --- a/drivers/infiniband/sw/siw/siw.h +++ b/drivers/infiniband/sw/siw/siw.h @@ -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; diff --git a/drivers/infiniband/sw/siw/siw_main.c b/drivers/infiniband/sw/siw/siw_main.c index 48e45a852b51..c147f0613d95 100644 --- a/drivers/infiniband/sw/siw/siw_main.c +++ b/drivers/infiniband/sw/siw/siw_main.c @@ -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, diff --git a/drivers/infiniband/sw/siw/siw_verbs.c b/drivers/infiniband/sw/siw/siw_verbs.c index 726a5924ea13..725985ed8af3 100644 --- a/drivers/infiniband/sw/siw/siw_verbs.c +++ b/drivers/infiniband/sw/siw/siw_verbs.c @@ -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"); - goto out; + return -EINVAL; } - uobj = siw_get_uobj(uctx, off, size); - if (!uobj) { - siw_dbg(&uctx->sdev->base_dev, "mmap lookup failed: %lu, %u\n", - off, size); + 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; } - 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)); - } - if (qp->xa_sq_index == SIW_INVAL_UOBJ_KEY || - qp->xa_rq_index == SIW_INVAL_UOBJ_KEY) { - rv = -ENOMEM; - goto err_out_xa; + 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; + } } - 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); } diff --git a/drivers/infiniband/sw/siw/siw_verbs.h b/drivers/infiniband/sw/siw/siw_verbs.h index 1910869281cb..1a731989fad6 100644 --- a/drivers/infiniband/sw/siw/siw_verbs.h +++ b/drivers/infiniband/sw/siw/siw_verbs.h @@ -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); |