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From: Konstantin Taranov <kotaranov@linux.microsoft.com>
To: kotaranov@microsoft.com,
longli@microsoft.com,
jgg@ziepe.ca,
leon@kernel.org
Cc: linux-rdma@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH next v2 1/1] RDMA/mana_ib: Introduce three helper functions to
clean mana_ib code
Date: Wed, 10 Jan 2024 06:14:34 -0800
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| Series |
[next,v2,1/1] RDMA/mana_ib: Introduce three helper functions to clean mana_ib code
|
|
Commit Message
Konstantin Taranov
Jan. 10, 2024, 2:14 p.m. UTC
From: Konstantin Taranov <kotaranov@microsoft.com> This patch aims to address two issues in mana_ib: 1) Unsafe and inconsistent access to gdma_dev and gdma_context 2) Code repetitions As a rule of thumb, functions should not access gdma_dev directly Introduced functions: 1) mdev_to_gc 2) mana_ib_get_netdev 3) mana_ib_install_cq_cb Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> --- Sorry that was sent again, I forgot to add RDMA/mana_ib to the subject --- drivers/infiniband/hw/mana/cq.c | 23 ++++++++++++++-- drivers/infiniband/hw/mana/main.c | 40 ++++++++++------------------ drivers/infiniband/hw/mana/mana_ib.h | 17 ++++++++++++ drivers/infiniband/hw/mana/mr.c | 13 +++------ drivers/infiniband/hw/mana/qp.c | 36 ++++++------------------- 5 files changed, 63 insertions(+), 66 deletions(-) base-commit: d24b923f1d696ddacb09f0f2d1b1f4f045cfe65e prerequisite-patch-id: 1b5d35ba40b675d080bfbe6a0e73b0dd163f4a03
Comments
On Wed, Jan 10, 2024 at 06:14:34AM -0800, Konstantin Taranov wrote: > From: Konstantin Taranov <kotaranov@microsoft.com> > > This patch aims to address two issues in mana_ib: > 1) Unsafe and inconsistent access to gdma_dev and gdma_context And how is it safe now? What is unsafe here? > 2) Code repetitions > > As a rule of thumb, functions should not access gdma_dev directly > > Introduced functions: > 1) mdev_to_gc Which is exactly "mdev->gdma_dev->gdma_context" as before. > 2) mana_ib_get_netdev > 3) mana_ib_install_cq_cb > > We are in merge window and cleanup patch will need to wait till it ends. Thanks > Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> > --- > Sorry that was sent again, I forgot to add RDMA/mana_ib to the subject > --- > drivers/infiniband/hw/mana/cq.c | 23 ++++++++++++++-- > drivers/infiniband/hw/mana/main.c | 40 ++++++++++------------------ > drivers/infiniband/hw/mana/mana_ib.h | 17 ++++++++++++ > drivers/infiniband/hw/mana/mr.c | 13 +++------ > drivers/infiniband/hw/mana/qp.c | 36 ++++++------------------- > 5 files changed, 63 insertions(+), 66 deletions(-) > > diff --git a/drivers/infiniband/hw/mana/cq.c b/drivers/infiniband/hw/mana/cq.c > index 83ebd0705..255e74ab7 100644 > --- a/drivers/infiniband/hw/mana/cq.c > +++ b/drivers/infiniband/hw/mana/cq.c > @@ -16,7 +16,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, > int err; > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > - gc = mdev->gdma_dev->gdma_context; > + gc = mdev_to_gc(mdev); > > if (udata->inlen < sizeof(ucmd)) > return -EINVAL; > @@ -81,7 +81,7 @@ int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata) > int err; > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > - gc = mdev->gdma_dev->gdma_context; > + gc = mdev_to_gc(mdev); > > err = mana_ib_gd_destroy_dma_region(mdev, cq->gdma_region); > if (err) { > @@ -107,3 +107,22 @@ void mana_ib_cq_handler(void *ctx, struct gdma_queue *gdma_cq) > if (cq->ibcq.comp_handler) > cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); > } > + > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq) > +{ > + struct gdma_context *gc = mdev_to_gc(mdev); > + struct gdma_queue *gdma_cq; > + > + /* Create CQ table entry */ > + WARN_ON(gc->cq_table[cq->id]); > + gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > + if (!gdma_cq) > + return -ENOMEM; > + > + gdma_cq->cq.context = cq; > + gdma_cq->type = GDMA_CQ; > + gdma_cq->cq.callback = mana_ib_cq_handler; > + gdma_cq->id = cq->id; > + gc->cq_table[cq->id] = gdma_cq; > + return 0; > +} > diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c > index faca09245..29dd2438d 100644 > --- a/drivers/infiniband/hw/mana/main.c > +++ b/drivers/infiniband/hw/mana/main.c > @@ -8,13 +8,10 @@ > void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd, > u32 port) > { > - struct gdma_dev *gd = &dev->gdma_dev->gdma_context->mana; > struct mana_port_context *mpc; > struct net_device *ndev; > - struct mana_context *mc; > > - mc = gd->driver_data; > - ndev = mc->ports[port]; > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > mpc = netdev_priv(ndev); > > mutex_lock(&pd->vport_mutex); > @@ -31,14 +28,11 @@ void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd, > int mana_ib_cfg_vport(struct mana_ib_dev *dev, u32 port, struct mana_ib_pd *pd, > u32 doorbell_id) > { > - struct gdma_dev *mdev = &dev->gdma_dev->gdma_context->mana; > struct mana_port_context *mpc; > - struct mana_context *mc; > struct net_device *ndev; > int err; > > - mc = mdev->driver_data; > - ndev = mc->ports[port]; > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > mpc = netdev_priv(ndev); > > mutex_lock(&pd->vport_mutex); > @@ -79,17 +73,17 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) > struct gdma_create_pd_req req = {}; > enum gdma_pd_flags flags = 0; > struct mana_ib_dev *dev; > - struct gdma_dev *mdev; > + struct gdma_context *gc; > int err; > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > - mdev = dev->gdma_dev; > + gc = mdev_to_gc(dev); > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_PD, sizeof(req), > sizeof(resp)); > > req.flags = flags; > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > + err = mana_gd_send_request(gc, sizeof(req), &req, > sizeof(resp), &resp); > > if (err || resp.hdr.status) { > @@ -119,17 +113,17 @@ int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) > struct gdma_destory_pd_resp resp = {}; > struct gdma_destroy_pd_req req = {}; > struct mana_ib_dev *dev; > - struct gdma_dev *mdev; > + struct gdma_context *gc; > int err; > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > - mdev = dev->gdma_dev; > + gc = mdev_to_gc(dev); > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_PD, sizeof(req), > sizeof(resp)); > > req.pd_handle = pd->pd_handle; > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > + err = mana_gd_send_request(gc, sizeof(req), &req, > sizeof(resp), &resp); > > if (err || resp.hdr.status) { > @@ -206,13 +200,11 @@ int mana_ib_alloc_ucontext(struct ib_ucontext *ibcontext, > struct ib_device *ibdev = ibcontext->device; > struct mana_ib_dev *mdev; > struct gdma_context *gc; > - struct gdma_dev *dev; > int doorbell_page; > int ret; > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > - dev = mdev->gdma_dev; > - gc = dev->gdma_context; > + gc = mdev_to_gc(mdev); > > /* Allocate a doorbell page index */ > ret = mana_gd_allocate_doorbell_page(gc, &doorbell_page); > @@ -238,7 +230,7 @@ void mana_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) > int ret; > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > - gc = mdev->gdma_dev->gdma_context; > + gc = mdev_to_gc(mdev); > > ret = mana_gd_destroy_doorbell_page(gc, mana_ucontext->doorbell); > if (ret) > @@ -322,15 +314,13 @@ int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, > size_t max_pgs_create_cmd; > struct gdma_context *gc; > size_t num_pages_total; > - struct gdma_dev *mdev; > unsigned long page_sz; > unsigned int tail = 0; > u64 *page_addr_list; > void *request_buf; > int err; > > - mdev = dev->gdma_dev; > - gc = mdev->gdma_context; > + gc = mdev_to_gc(dev); > hwc = gc->hwc.driver_data; > > /* Hardware requires dma region to align to chosen page size */ > @@ -426,10 +416,8 @@ int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, > > int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev, u64 gdma_region) > { > - struct gdma_dev *mdev = dev->gdma_dev; > - struct gdma_context *gc; > + struct gdma_context *gc = mdev_to_gc(dev); > > - gc = mdev->gdma_context; > ibdev_dbg(&dev->ib_dev, "destroy dma region 0x%llx\n", gdma_region); > > return mana_gd_destroy_dma_region(gc, gdma_region); > @@ -447,7 +435,7 @@ int mana_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma) > int ret; > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > - gc = mdev->gdma_dev->gdma_context; > + gc = mdev_to_gc(mdev); > > if (vma->vm_pgoff != 0) { > ibdev_dbg(ibdev, "Unexpected vm_pgoff %lu\n", vma->vm_pgoff); > @@ -531,7 +519,7 @@ int mana_ib_gd_query_adapter_caps(struct mana_ib_dev *dev) > req.hdr.resp.msg_version = GDMA_MESSAGE_V3; > req.hdr.dev_id = dev->gdma_dev->dev_id; > > - err = mana_gd_send_request(dev->gdma_dev->gdma_context, sizeof(req), > + err = mana_gd_send_request(mdev_to_gc(dev), sizeof(req), > &req, sizeof(resp), &resp); > > if (err) { > diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h > index 6bdc0f549..6b15b2ab5 100644 > --- a/drivers/infiniband/hw/mana/mana_ib.h > +++ b/drivers/infiniband/hw/mana/mana_ib.h > @@ -142,6 +142,22 @@ struct mana_ib_query_adapter_caps_resp { > u32 max_inline_data_size; > }; /* HW Data */ > > +static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev *mdev) > +{ > + return mdev->gdma_dev->gdma_context; > +} > + > +static inline struct net_device *mana_ib_get_netdev(struct ib_device *ibdev, u32 port) > +{ > + struct mana_ib_dev *mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > + struct gdma_context *gc = mdev_to_gc(mdev); > + struct mana_context *mc = gc->mana.driver_data; > + > + if (port < 1 || port > mc->num_ports) > + return NULL; > + return mc->ports[port - 1]; > +} > + > int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, > mana_handle_t *gdma_region); > > @@ -188,6 +204,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, > struct ib_udata *udata); > > int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq); > > int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > diff --git a/drivers/infiniband/hw/mana/mr.c b/drivers/infiniband/hw/mana/mr.c > index 351207c60..ee4d4f834 100644 > --- a/drivers/infiniband/hw/mana/mr.c > +++ b/drivers/infiniband/hw/mana/mr.c > @@ -30,12 +30,9 @@ static int mana_ib_gd_create_mr(struct mana_ib_dev *dev, struct mana_ib_mr *mr, > { > struct gdma_create_mr_response resp = {}; > struct gdma_create_mr_request req = {}; > - struct gdma_dev *mdev = dev->gdma_dev; > - struct gdma_context *gc; > + struct gdma_context *gc = mdev_to_gc(dev); > int err; > > - gc = mdev->gdma_context; > - > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_MR, sizeof(req), > sizeof(resp)); > req.pd_handle = mr_params->pd_handle; > @@ -77,12 +74,9 @@ static int mana_ib_gd_destroy_mr(struct mana_ib_dev *dev, u64 mr_handle) > { > struct gdma_destroy_mr_response resp = {}; > struct gdma_destroy_mr_request req = {}; > - struct gdma_dev *mdev = dev->gdma_dev; > - struct gdma_context *gc; > + struct gdma_context *gc = mdev_to_gc(dev); > int err; > > - gc = mdev->gdma_context; > - > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_MR, sizeof(req), > sizeof(resp)); > > @@ -164,8 +158,7 @@ struct ib_mr *mana_ib_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 length, > return &mr->ibmr; > > err_dma_region: > - mana_gd_destroy_dma_region(dev->gdma_dev->gdma_context, > - dma_region_handle); > + mana_gd_destroy_dma_region(mdev_to_gc(dev), dma_region_handle); > > err_umem: > ib_umem_release(mr->umem); > diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c > index e6d063d45..e889c798f 100644 > --- a/drivers/infiniband/hw/mana/qp.c > +++ b/drivers/infiniband/hw/mana/qp.c > @@ -17,12 +17,10 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, > struct mana_cfg_rx_steer_resp resp = {}; > mana_handle_t *req_indir_tab; > struct gdma_context *gc; > - struct gdma_dev *mdev; > u32 req_buf_size; > int i, err; > > - gc = dev->gdma_dev->gdma_context; > - mdev = &gc->mana; > + gc = mdev_to_gc(dev); > > req_buf_size = > sizeof(*req) + sizeof(mana_handle_t) * MANA_INDIRECT_TABLE_SIZE; > @@ -39,7 +37,7 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, > req->rx_enable = 1; > req->update_default_rxobj = 1; > req->default_rxobj = default_rxobj; > - req->hdr.dev_id = mdev->dev_id; > + req->hdr.dev_id = gc->mana.dev_id; > > /* If there are more than 1 entries in indirection table, enable RSS */ > if (log_ind_tbl_size) > @@ -106,7 +104,6 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd, > struct gdma_queue **gdma_cq_allocated; > mana_handle_t *mana_ind_table; > struct mana_port_context *mpc; > - struct gdma_queue *gdma_cq; > unsigned int ind_tbl_size; > struct net_device *ndev; > struct mana_ib_cq *cq; > @@ -231,19 +228,11 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd, > mana_ind_table[i] = wq->rx_object; > > /* Create CQ table entry */ > - WARN_ON(gc->cq_table[cq->id]); > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > - if (!gdma_cq) { > - ret = -ENOMEM; > + ret = mana_ib_install_cq_cb(mdev, cq); > + if (!ret) > goto fail; > - } > - gdma_cq_allocated[i] = gdma_cq; > > - gdma_cq->cq.context = cq; > - gdma_cq->type = GDMA_CQ; > - gdma_cq->cq.callback = mana_ib_cq_handler; > - gdma_cq->id = cq->id; > - gc->cq_table[cq->id] = gdma_cq; > + gdma_cq_allocated[i] = gc->cq_table[cq->id]; > } > resp.num_entries = i; > > @@ -409,18 +398,9 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd, > send_cq->id = cq_spec.queue_index; > > /* Create CQ table entry */ > - WARN_ON(gc->cq_table[send_cq->id]); > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > - if (!gdma_cq) { > - err = -ENOMEM; > + err = mana_ib_install_cq_cb(mdev, send_cq); > + if (err) > goto err_destroy_wq_obj; > - } > - > - gdma_cq->cq.context = send_cq; > - gdma_cq->type = GDMA_CQ; > - gdma_cq->cq.callback = mana_ib_cq_handler; > - gdma_cq->id = send_cq->id; > - gc->cq_table[send_cq->id] = gdma_cq; > > ibdev_dbg(&mdev->ib_dev, > "ret %d qp->tx_object 0x%llx sq id %llu cq id %llu\n", err, > @@ -442,7 +422,7 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd, > > err_release_gdma_cq: > kfree(gdma_cq); > - gd->gdma_context->cq_table[send_cq->id] = NULL; > + gc->cq_table[send_cq->id] = NULL; > > err_destroy_wq_obj: > mana_destroy_wq_obj(mpc, GDMA_SQ, qp->tx_object); > > base-commit: d24b923f1d696ddacb09f0f2d1b1f4f045cfe65e > prerequisite-patch-id: 1b5d35ba40b675d080bfbe6a0e73b0dd163f4a03 > -- > 2.43.0 >
Hi Leon,
// Sorry for re-sending the email. I did not know that I had to enable plain-text messages in outlook.
thanks for pointing out the merge window. I will resend after it.
I can also split it into 2 commits (mdev_to_gc and mana_ib_get_netdev in one, and CQ cb in the other), if it is required.
I cannot separate "mdev_to_gc" and "mana_ib_get_netdev " into 2 commits as it will double the changes and obstruct the reader.
> And how is it safe now? What is unsafe here?
The issue with the gdma_dev is the following.
Our mana HW device has two gdma_devs: one for ethernet and one for rdma.
And in the code of mana_ib.ko it is not clearly indicated what gdma_dev is used.
So it means in some functions it is ethernet and in some it is rdma.
The use of a wrong device in the hardware channel leads to errors and waste time of developers.
This problem is addressed as follows:
We avoid using gdma_dev explicitly in functions of mana_ib.ko except the init.
As the gdma_context is only one, we abstract it into mdev_to_gc, to prevent the user to declare gdma_dev.
When a function actually needs to use gdma_dev of the ethernet, it uses netdev, which encapsulates the correct gdma_dev.
Getting netdev is implemented with mana_ib_get_netdev, to prevent the user to declare gdma_dev.
When a function needs to use gdma_dev of the rdma, it will use struct mana_ib_dev (a child of ib_dev) in its hardware channel requests.
I hope it explains what becomes safer. If it was useful, I can add this explanation to the commit message.
Thanks,
Konstantin
> Subject: Re: [EXTERNAL] Re: [PATCH next v2 1/1] RDMA/mana_ib: Introduce > three helper functions to clean mana_ib code > > Hi Leon, > > // Sorry for re-sending the email. I did not know that I had to enable plain-text > messages in outlook. > > thanks for pointing out the merge window. I will resend after it. > > I can also split it into 2 commits (mdev_to_gc and mana_ib_get_netdev in one, > and CQ cb in the other), if it is required. > I cannot separate "mdev_to_gc" and "mana_ib_get_netdev " into 2 commits as it > will double the changes and obstruct the reader. > > > And how is it safe now? What is unsafe here? > > The issue with the gdma_dev is the following. > Our mana HW device has two gdma_devs: one for ethernet and one for rdma. > And in the code of mana_ib.ko it is not clearly indicated what gdma_dev is used. > So it means in some functions it is ethernet and in some it is rdma. > The use of a wrong device in the hardware channel leads to errors and waste > time of developers. > > This problem is addressed as follows: > We avoid using gdma_dev explicitly in functions of mana_ib.ko except the init. > As the gdma_context is only one, we abstract it into mdev_to_gc, to prevent the > user to declare gdma_dev. > When a function actually needs to use gdma_dev of the ethernet, it uses netdev, > which encapsulates the correct gdma_dev. > Getting netdev is implemented with mana_ib_get_netdev, to prevent the user to > declare gdma_dev. > When a function needs to use gdma_dev of the rdma, it will use struct > mana_ib_dev (a child of ib_dev) in its hardware channel requests. > > I hope it explains what becomes safer. If it was useful, I can add this explanation > to the commit message. You patch doesn't make it safer, but rather makes it easier to understand. The wording "Unsafe and inconsistent" should be removed. Long > > Thanks, > Konstantin > > ________________________________________ > From: Leon Romanovsky <leon@kernel.org> > Sent: Thursday, January 11, 2024 12:14 PM > To: Konstantin Taranov > Cc: Konstantin Taranov; Long Li; jgg@ziepe.ca; linux-rdma@vger.kernel.org; linux- > kernel@vger.kernel.org > Subject: [EXTERNAL] Re: [PATCH next v2 1/1] RDMA/mana_ib: Introduce three > helper functions to clean mana_ib code > > [You don't often get email from leon@kernel.org. Learn why this is important at > https://aka.ms/LearnAboutSenderIdentification ] > > On Wed, Jan 10, 2024 at 06:14:34AM -0800, Konstantin Taranov wrote: > > From: Konstantin Taranov <kotaranov@microsoft.com> > > > > This patch aims to address two issues in mana_ib: > > 1) Unsafe and inconsistent access to gdma_dev and gdma_context > > And how is it safe now? What is unsafe here? > > > 2) Code repetitions > > > > As a rule of thumb, functions should not access gdma_dev directly > > > > Introduced functions: > > 1) mdev_to_gc > > Which is exactly "mdev->gdma_dev->gdma_context" as before. > > > 2) mana_ib_get_netdev > > 3) mana_ib_install_cq_cb > > > > > > We are in merge window and cleanup patch will need to wait till it ends. > > Thanks > > > Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> > > --- > > Sorry that was sent again, I forgot to add RDMA/mana_ib to the subject > > --- > > drivers/infiniband/hw/mana/cq.c | 23 ++++++++++++++-- > > drivers/infiniband/hw/mana/main.c | 40 ++++++++++------------------ > > drivers/infiniband/hw/mana/mana_ib.h | 17 ++++++++++++ > > drivers/infiniband/hw/mana/mr.c | 13 +++------ > > drivers/infiniband/hw/mana/qp.c | 36 ++++++------------------- > > 5 files changed, 63 insertions(+), 66 deletions(-) > > > > diff --git a/drivers/infiniband/hw/mana/cq.c > > b/drivers/infiniband/hw/mana/cq.c index 83ebd0705..255e74ab7 100644 > > --- a/drivers/infiniband/hw/mana/cq.c > > +++ b/drivers/infiniband/hw/mana/cq.c > > @@ -16,7 +16,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > ib_cq_init_attr *attr, > > int err; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > if (udata->inlen < sizeof(ucmd)) > > return -EINVAL; > > @@ -81,7 +81,7 @@ int mana_ib_destroy_cq(struct ib_cq *ibcq, struct > ib_udata *udata) > > int err; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > err = mana_ib_gd_destroy_dma_region(mdev, cq->gdma_region); > > if (err) { > > @@ -107,3 +107,22 @@ void mana_ib_cq_handler(void *ctx, struct > gdma_queue *gdma_cq) > > if (cq->ibcq.comp_handler) > > cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); > > } > > + > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > +*cq) { > > + struct gdma_context *gc = mdev_to_gc(mdev); > > + struct gdma_queue *gdma_cq; > > + > > + /* Create CQ table entry */ > > + WARN_ON(gc->cq_table[cq->id]); > > + gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > + if (!gdma_cq) > > + return -ENOMEM; > > + > > + gdma_cq->cq.context = cq; > > + gdma_cq->type = GDMA_CQ; > > + gdma_cq->cq.callback = mana_ib_cq_handler; > > + gdma_cq->id = cq->id; > > + gc->cq_table[cq->id] = gdma_cq; > > + return 0; > > +} > > diff --git a/drivers/infiniband/hw/mana/main.c > > b/drivers/infiniband/hw/mana/main.c > > index faca09245..29dd2438d 100644 > > --- a/drivers/infiniband/hw/mana/main.c > > +++ b/drivers/infiniband/hw/mana/main.c > > @@ -8,13 +8,10 @@ > > void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd, > > u32 port) > > { > > - struct gdma_dev *gd = &dev->gdma_dev->gdma_context->mana; > > struct mana_port_context *mpc; > > struct net_device *ndev; > > - struct mana_context *mc; > > > > - mc = gd->driver_data; > > - ndev = mc->ports[port]; > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > mpc = netdev_priv(ndev); > > > > mutex_lock(&pd->vport_mutex); > > @@ -31,14 +28,11 @@ void mana_ib_uncfg_vport(struct mana_ib_dev *dev, > > struct mana_ib_pd *pd, int mana_ib_cfg_vport(struct mana_ib_dev *dev, u32 > port, struct mana_ib_pd *pd, > > u32 doorbell_id) > > { > > - struct gdma_dev *mdev = &dev->gdma_dev->gdma_context->mana; > > struct mana_port_context *mpc; > > - struct mana_context *mc; > > struct net_device *ndev; > > int err; > > > > - mc = mdev->driver_data; > > - ndev = mc->ports[port]; > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > mpc = netdev_priv(ndev); > > > > mutex_lock(&pd->vport_mutex); > > @@ -79,17 +73,17 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct > ib_udata *udata) > > struct gdma_create_pd_req req = {}; > > enum gdma_pd_flags flags = 0; > > struct mana_ib_dev *dev; > > - struct gdma_dev *mdev; > > + struct gdma_context *gc; > > int err; > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - mdev = dev->gdma_dev; > > + gc = mdev_to_gc(dev); > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_PD, sizeof(req), > > sizeof(resp)); > > > > req.flags = flags; > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > sizeof(resp), &resp); > > > > if (err || resp.hdr.status) { > > @@ -119,17 +113,17 @@ int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct > ib_udata *udata) > > struct gdma_destory_pd_resp resp = {}; > > struct gdma_destroy_pd_req req = {}; > > struct mana_ib_dev *dev; > > - struct gdma_dev *mdev; > > + struct gdma_context *gc; > > int err; > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - mdev = dev->gdma_dev; > > + gc = mdev_to_gc(dev); > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_PD, sizeof(req), > > sizeof(resp)); > > > > req.pd_handle = pd->pd_handle; > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > sizeof(resp), &resp); > > > > if (err || resp.hdr.status) { > > @@ -206,13 +200,11 @@ int mana_ib_alloc_ucontext(struct ib_ucontext > *ibcontext, > > struct ib_device *ibdev = ibcontext->device; > > struct mana_ib_dev *mdev; > > struct gdma_context *gc; > > - struct gdma_dev *dev; > > int doorbell_page; > > int ret; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - dev = mdev->gdma_dev; > > - gc = dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > /* Allocate a doorbell page index */ > > ret = mana_gd_allocate_doorbell_page(gc, &doorbell_page); @@ > > -238,7 +230,7 @@ void mana_ib_dealloc_ucontext(struct ib_ucontext > *ibcontext) > > int ret; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > ret = mana_gd_destroy_doorbell_page(gc, mana_ucontext->doorbell); > > if (ret) > > @@ -322,15 +314,13 @@ int mana_ib_gd_create_dma_region(struct > mana_ib_dev *dev, struct ib_umem *umem, > > size_t max_pgs_create_cmd; > > struct gdma_context *gc; > > size_t num_pages_total; > > - struct gdma_dev *mdev; > > unsigned long page_sz; > > unsigned int tail = 0; > > u64 *page_addr_list; > > void *request_buf; > > int err; > > > > - mdev = dev->gdma_dev; > > - gc = mdev->gdma_context; > > + gc = mdev_to_gc(dev); > > hwc = gc->hwc.driver_data; > > > > /* Hardware requires dma region to align to chosen page size */ > > @@ -426,10 +416,8 @@ int mana_ib_gd_create_dma_region(struct > > mana_ib_dev *dev, struct ib_umem *umem, > > > > int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev, u64 > > gdma_region) { > > - struct gdma_dev *mdev = dev->gdma_dev; > > - struct gdma_context *gc; > > + struct gdma_context *gc = mdev_to_gc(dev); > > > > - gc = mdev->gdma_context; > > ibdev_dbg(&dev->ib_dev, "destroy dma region 0x%llx\n", > > gdma_region); > > > > return mana_gd_destroy_dma_region(gc, gdma_region); @@ -447,7 > > +435,7 @@ int mana_ib_mmap(struct ib_ucontext *ibcontext, struct > vm_area_struct *vma) > > int ret; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > if (vma->vm_pgoff != 0) { > > ibdev_dbg(ibdev, "Unexpected vm_pgoff %lu\n", > > vma->vm_pgoff); @@ -531,7 +519,7 @@ int > mana_ib_gd_query_adapter_caps(struct mana_ib_dev *dev) > > req.hdr.resp.msg_version = GDMA_MESSAGE_V3; > > req.hdr.dev_id = dev->gdma_dev->dev_id; > > > > - err = mana_gd_send_request(dev->gdma_dev->gdma_context, sizeof(req), > > + err = mana_gd_send_request(mdev_to_gc(dev), sizeof(req), > > &req, sizeof(resp), &resp); > > > > if (err) { > > diff --git a/drivers/infiniband/hw/mana/mana_ib.h > > b/drivers/infiniband/hw/mana/mana_ib.h > > index 6bdc0f549..6b15b2ab5 100644 > > --- a/drivers/infiniband/hw/mana/mana_ib.h > > +++ b/drivers/infiniband/hw/mana/mana_ib.h > > @@ -142,6 +142,22 @@ struct mana_ib_query_adapter_caps_resp { > > u32 max_inline_data_size; > > }; /* HW Data */ > > > > +static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev > > +*mdev) { > > + return mdev->gdma_dev->gdma_context; } > > + > > +static inline struct net_device *mana_ib_get_netdev(struct ib_device > > +*ibdev, u32 port) { > > + struct mana_ib_dev *mdev = container_of(ibdev, struct mana_ib_dev, > ib_dev); > > + struct gdma_context *gc = mdev_to_gc(mdev); > > + struct mana_context *mc = gc->mana.driver_data; > > + > > + if (port < 1 || port > mc->num_ports) > > + return NULL; > > + return mc->ports[port - 1]; > > +} > > + > > int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem > *umem, > > mana_handle_t *gdma_region); > > > > @@ -188,6 +204,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > ib_cq_init_attr *attr, > > struct ib_udata *udata); > > > > int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > +*cq); > > > > int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > diff --git a/drivers/infiniband/hw/mana/mr.c > > b/drivers/infiniband/hw/mana/mr.c index 351207c60..ee4d4f834 100644 > > --- a/drivers/infiniband/hw/mana/mr.c > > +++ b/drivers/infiniband/hw/mana/mr.c > > @@ -30,12 +30,9 @@ static int mana_ib_gd_create_mr(struct mana_ib_dev > > *dev, struct mana_ib_mr *mr, { > > struct gdma_create_mr_response resp = {}; > > struct gdma_create_mr_request req = {}; > > - struct gdma_dev *mdev = dev->gdma_dev; > > - struct gdma_context *gc; > > + struct gdma_context *gc = mdev_to_gc(dev); > > int err; > > > > - gc = mdev->gdma_context; > > - > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_MR, sizeof(req), > > sizeof(resp)); > > req.pd_handle = mr_params->pd_handle; @@ -77,12 +74,9 @@ static > > int mana_ib_gd_destroy_mr(struct mana_ib_dev *dev, u64 mr_handle) { > > struct gdma_destroy_mr_response resp = {}; > > struct gdma_destroy_mr_request req = {}; > > - struct gdma_dev *mdev = dev->gdma_dev; > > - struct gdma_context *gc; > > + struct gdma_context *gc = mdev_to_gc(dev); > > int err; > > > > - gc = mdev->gdma_context; > > - > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_MR, sizeof(req), > > sizeof(resp)); > > > > @@ -164,8 +158,7 @@ struct ib_mr *mana_ib_reg_user_mr(struct ib_pd > *ibpd, u64 start, u64 length, > > return &mr->ibmr; > > > > err_dma_region: > > - mana_gd_destroy_dma_region(dev->gdma_dev->gdma_context, > > - dma_region_handle); > > + mana_gd_destroy_dma_region(mdev_to_gc(dev), dma_region_handle); > > > > err_umem: > > ib_umem_release(mr->umem); > > diff --git a/drivers/infiniband/hw/mana/qp.c > > b/drivers/infiniband/hw/mana/qp.c index e6d063d45..e889c798f 100644 > > --- a/drivers/infiniband/hw/mana/qp.c > > +++ b/drivers/infiniband/hw/mana/qp.c > > @@ -17,12 +17,10 @@ static int mana_ib_cfg_vport_steering(struct > mana_ib_dev *dev, > > struct mana_cfg_rx_steer_resp resp = {}; > > mana_handle_t *req_indir_tab; > > struct gdma_context *gc; > > - struct gdma_dev *mdev; > > u32 req_buf_size; > > int i, err; > > > > - gc = dev->gdma_dev->gdma_context; > > - mdev = &gc->mana; > > + gc = mdev_to_gc(dev); > > > > req_buf_size = > > sizeof(*req) + sizeof(mana_handle_t) * > > MANA_INDIRECT_TABLE_SIZE; @@ -39,7 +37,7 @@ static int > mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, > > req->rx_enable = 1; > > req->update_default_rxobj = 1; > > req->default_rxobj = default_rxobj; > > - req->hdr.dev_id = mdev->dev_id; > > + req->hdr.dev_id = gc->mana.dev_id; > > > > /* If there are more than 1 entries in indirection table, enable RSS */ > > if (log_ind_tbl_size) > > @@ -106,7 +104,6 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > struct ib_pd *pd, > > struct gdma_queue **gdma_cq_allocated; > > mana_handle_t *mana_ind_table; > > struct mana_port_context *mpc; > > - struct gdma_queue *gdma_cq; > > unsigned int ind_tbl_size; > > struct net_device *ndev; > > struct mana_ib_cq *cq; > > @@ -231,19 +228,11 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > struct ib_pd *pd, > > mana_ind_table[i] = wq->rx_object; > > > > /* Create CQ table entry */ > > - WARN_ON(gc->cq_table[cq->id]); > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > - if (!gdma_cq) { > > - ret = -ENOMEM; > > + ret = mana_ib_install_cq_cb(mdev, cq); > > + if (!ret) > > goto fail; > > - } > > - gdma_cq_allocated[i] = gdma_cq; > > > > - gdma_cq->cq.context = cq; > > - gdma_cq->type = GDMA_CQ; > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > - gdma_cq->id = cq->id; > > - gc->cq_table[cq->id] = gdma_cq; > > + gdma_cq_allocated[i] = gc->cq_table[cq->id]; > > } > > resp.num_entries = i; > > > > @@ -409,18 +398,9 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, > struct ib_pd *ibpd, > > send_cq->id = cq_spec.queue_index; > > > > /* Create CQ table entry */ > > - WARN_ON(gc->cq_table[send_cq->id]); > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > - if (!gdma_cq) { > > - err = -ENOMEM; > > + err = mana_ib_install_cq_cb(mdev, send_cq); > > + if (err) > > goto err_destroy_wq_obj; > > - } > > - > > - gdma_cq->cq.context = send_cq; > > - gdma_cq->type = GDMA_CQ; > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > - gdma_cq->id = send_cq->id; > > - gc->cq_table[send_cq->id] = gdma_cq; > > > > ibdev_dbg(&mdev->ib_dev, > > "ret %d qp->tx_object 0x%llx sq id %llu cq id %llu\n", > > err, @@ -442,7 +422,7 @@ static int mana_ib_create_qp_raw(struct ib_qp > > *ibqp, struct ib_pd *ibpd, > > > > err_release_gdma_cq: > > kfree(gdma_cq); > > - gd->gdma_context->cq_table[send_cq->id] = NULL; > > + gc->cq_table[send_cq->id] = NULL; > > > > err_destroy_wq_obj: > > mana_destroy_wq_obj(mpc, GDMA_SQ, qp->tx_object); > > > > base-commit: d24b923f1d696ddacb09f0f2d1b1f4f045cfe65e > > prerequisite-patch-id: 1b5d35ba40b675d080bfbe6a0e73b0dd163f4a03 > > -- > > 2.43.0 > > > > > ________________________________________ > From: Leon Romanovsky <leon@kernel.org> > Sent: Thursday, January 11, 2024 12:14 PM > To: Konstantin Taranov > Cc: Konstantin Taranov; Long Li; jgg@ziepe.ca; linux-rdma@vger.kernel.org; linux- > kernel@vger.kernel.org > Subject: [EXTERNAL] Re: [PATCH next v2 1/1] RDMA/mana_ib: Introduce three > helper functions to clean mana_ib code > > [You don't often get email from leon@kernel.org. Learn why this is important at > https://aka.ms/LearnAboutSenderIdentification ] > > On Wed, Jan 10, 2024 at 06:14:34AM -0800, Konstantin Taranov wrote: > > From: Konstantin Taranov <kotaranov@microsoft.com> > > > > This patch aims to address two issues in mana_ib: > > 1) Unsafe and inconsistent access to gdma_dev and gdma_context > > And how is it safe now? What is unsafe here? > > > 2) Code repetitions > > > > As a rule of thumb, functions should not access gdma_dev directly > > > > Introduced functions: > > 1) mdev_to_gc > > Which is exactly "mdev->gdma_dev->gdma_context" as before. > > > 2) mana_ib_get_netdev > > 3) mana_ib_install_cq_cb > > > > > > We are in merge window and cleanup patch will need to wait till it ends. > > Thanks > > > Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> > > --- > > Sorry that was sent again, I forgot to add RDMA/mana_ib to the subject > > --- > > drivers/infiniband/hw/mana/cq.c | 23 ++++++++++++++-- > > drivers/infiniband/hw/mana/main.c | 40 ++++++++++------------------ > > drivers/infiniband/hw/mana/mana_ib.h | 17 ++++++++++++ > > drivers/infiniband/hw/mana/mr.c | 13 +++------ > > drivers/infiniband/hw/mana/qp.c | 36 ++++++------------------- > > 5 files changed, 63 insertions(+), 66 deletions(-) > > > > diff --git a/drivers/infiniband/hw/mana/cq.c > > b/drivers/infiniband/hw/mana/cq.c index 83ebd0705..255e74ab7 100644 > > --- a/drivers/infiniband/hw/mana/cq.c > > +++ b/drivers/infiniband/hw/mana/cq.c > > @@ -16,7 +16,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > ib_cq_init_attr *attr, > > int err; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > if (udata->inlen < sizeof(ucmd)) > > return -EINVAL; > > @@ -81,7 +81,7 @@ int mana_ib_destroy_cq(struct ib_cq *ibcq, struct > ib_udata *udata) > > int err; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > err = mana_ib_gd_destroy_dma_region(mdev, cq->gdma_region); > > if (err) { > > @@ -107,3 +107,22 @@ void mana_ib_cq_handler(void *ctx, struct > gdma_queue *gdma_cq) > > if (cq->ibcq.comp_handler) > > cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); > > } > > + > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > +*cq) { > > + struct gdma_context *gc = mdev_to_gc(mdev); > > + struct gdma_queue *gdma_cq; > > + > > + /* Create CQ table entry */ > > + WARN_ON(gc->cq_table[cq->id]); > > + gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > + if (!gdma_cq) > > + return -ENOMEM; > > + > > + gdma_cq->cq.context = cq; > > + gdma_cq->type = GDMA_CQ; > > + gdma_cq->cq.callback = mana_ib_cq_handler; > > + gdma_cq->id = cq->id; > > + gc->cq_table[cq->id] = gdma_cq; > > + return 0; > > +} > > diff --git a/drivers/infiniband/hw/mana/main.c > > b/drivers/infiniband/hw/mana/main.c > > index faca09245..29dd2438d 100644 > > --- a/drivers/infiniband/hw/mana/main.c > > +++ b/drivers/infiniband/hw/mana/main.c > > @@ -8,13 +8,10 @@ > > void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd, > > u32 port) > > { > > - struct gdma_dev *gd = &dev->gdma_dev->gdma_context->mana; > > struct mana_port_context *mpc; > > struct net_device *ndev; > > - struct mana_context *mc; > > > > - mc = gd->driver_data; > > - ndev = mc->ports[port]; > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > mpc = netdev_priv(ndev); > > > > mutex_lock(&pd->vport_mutex); > > @@ -31,14 +28,11 @@ void mana_ib_uncfg_vport(struct mana_ib_dev *dev, > > struct mana_ib_pd *pd, int mana_ib_cfg_vport(struct mana_ib_dev *dev, u32 > port, struct mana_ib_pd *pd, > > u32 doorbell_id) > > { > > - struct gdma_dev *mdev = &dev->gdma_dev->gdma_context->mana; > > struct mana_port_context *mpc; > > - struct mana_context *mc; > > struct net_device *ndev; > > int err; > > > > - mc = mdev->driver_data; > > - ndev = mc->ports[port]; > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > mpc = netdev_priv(ndev); > > > > mutex_lock(&pd->vport_mutex); > > @@ -79,17 +73,17 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct > ib_udata *udata) > > struct gdma_create_pd_req req = {}; > > enum gdma_pd_flags flags = 0; > > struct mana_ib_dev *dev; > > - struct gdma_dev *mdev; > > + struct gdma_context *gc; > > int err; > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - mdev = dev->gdma_dev; > > + gc = mdev_to_gc(dev); > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_PD, sizeof(req), > > sizeof(resp)); > > > > req.flags = flags; > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > sizeof(resp), &resp); > > > > if (err || resp.hdr.status) { > > @@ -119,17 +113,17 @@ int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct > ib_udata *udata) > > struct gdma_destory_pd_resp resp = {}; > > struct gdma_destroy_pd_req req = {}; > > struct mana_ib_dev *dev; > > - struct gdma_dev *mdev; > > + struct gdma_context *gc; > > int err; > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - mdev = dev->gdma_dev; > > + gc = mdev_to_gc(dev); > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_PD, sizeof(req), > > sizeof(resp)); > > > > req.pd_handle = pd->pd_handle; > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > sizeof(resp), &resp); > > > > if (err || resp.hdr.status) { > > @@ -206,13 +200,11 @@ int mana_ib_alloc_ucontext(struct ib_ucontext > *ibcontext, > > struct ib_device *ibdev = ibcontext->device; > > struct mana_ib_dev *mdev; > > struct gdma_context *gc; > > - struct gdma_dev *dev; > > int doorbell_page; > > int ret; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - dev = mdev->gdma_dev; > > - gc = dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > /* Allocate a doorbell page index */ > > ret = mana_gd_allocate_doorbell_page(gc, &doorbell_page); @@ > > -238,7 +230,7 @@ void mana_ib_dealloc_ucontext(struct ib_ucontext > *ibcontext) > > int ret; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > ret = mana_gd_destroy_doorbell_page(gc, mana_ucontext->doorbell); > > if (ret) > > @@ -322,15 +314,13 @@ int mana_ib_gd_create_dma_region(struct > mana_ib_dev *dev, struct ib_umem *umem, > > size_t max_pgs_create_cmd; > > struct gdma_context *gc; > > size_t num_pages_total; > > - struct gdma_dev *mdev; > > unsigned long page_sz; > > unsigned int tail = 0; > > u64 *page_addr_list; > > void *request_buf; > > int err; > > > > - mdev = dev->gdma_dev; > > - gc = mdev->gdma_context; > > + gc = mdev_to_gc(dev); > > hwc = gc->hwc.driver_data; > > > > /* Hardware requires dma region to align to chosen page size */ > > @@ -426,10 +416,8 @@ int mana_ib_gd_create_dma_region(struct > > mana_ib_dev *dev, struct ib_umem *umem, > > > > int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev, u64 > > gdma_region) { > > - struct gdma_dev *mdev = dev->gdma_dev; > > - struct gdma_context *gc; > > + struct gdma_context *gc = mdev_to_gc(dev); > > > > - gc = mdev->gdma_context; > > ibdev_dbg(&dev->ib_dev, "destroy dma region 0x%llx\n", > > gdma_region); > > > > return mana_gd_destroy_dma_region(gc, gdma_region); @@ -447,7 > > +435,7 @@ int mana_ib_mmap(struct ib_ucontext *ibcontext, struct > vm_area_struct *vma) > > int ret; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > if (vma->vm_pgoff != 0) { > > ibdev_dbg(ibdev, "Unexpected vm_pgoff %lu\n", > > vma->vm_pgoff); @@ -531,7 +519,7 @@ int > mana_ib_gd_query_adapter_caps(struct mana_ib_dev *dev) > > req.hdr.resp.msg_version = GDMA_MESSAGE_V3; > > req.hdr.dev_id = dev->gdma_dev->dev_id; > > > > - err = mana_gd_send_request(dev->gdma_dev->gdma_context, sizeof(req), > > + err = mana_gd_send_request(mdev_to_gc(dev), sizeof(req), > > &req, sizeof(resp), &resp); > > > > if (err) { > > diff --git a/drivers/infiniband/hw/mana/mana_ib.h > > b/drivers/infiniband/hw/mana/mana_ib.h > > index 6bdc0f549..6b15b2ab5 100644 > > --- a/drivers/infiniband/hw/mana/mana_ib.h > > +++ b/drivers/infiniband/hw/mana/mana_ib.h > > @@ -142,6 +142,22 @@ struct mana_ib_query_adapter_caps_resp { > > u32 max_inline_data_size; > > }; /* HW Data */ > > > > +static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev > > +*mdev) { > > + return mdev->gdma_dev->gdma_context; } > > + > > +static inline struct net_device *mana_ib_get_netdev(struct ib_device > > +*ibdev, u32 port) { > > + struct mana_ib_dev *mdev = container_of(ibdev, struct mana_ib_dev, > ib_dev); > > + struct gdma_context *gc = mdev_to_gc(mdev); > > + struct mana_context *mc = gc->mana.driver_data; > > + > > + if (port < 1 || port > mc->num_ports) > > + return NULL; > > + return mc->ports[port - 1]; > > +} > > + > > int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem > *umem, > > mana_handle_t *gdma_region); > > > > @@ -188,6 +204,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > ib_cq_init_attr *attr, > > struct ib_udata *udata); > > > > int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > +*cq); > > > > int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > diff --git a/drivers/infiniband/hw/mana/mr.c > > b/drivers/infiniband/hw/mana/mr.c index 351207c60..ee4d4f834 100644 > > --- a/drivers/infiniband/hw/mana/mr.c > > +++ b/drivers/infiniband/hw/mana/mr.c > > @@ -30,12 +30,9 @@ static int mana_ib_gd_create_mr(struct mana_ib_dev > > *dev, struct mana_ib_mr *mr, { > > struct gdma_create_mr_response resp = {}; > > struct gdma_create_mr_request req = {}; > > - struct gdma_dev *mdev = dev->gdma_dev; > > - struct gdma_context *gc; > > + struct gdma_context *gc = mdev_to_gc(dev); > > int err; > > > > - gc = mdev->gdma_context; > > - > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_MR, sizeof(req), > > sizeof(resp)); > > req.pd_handle = mr_params->pd_handle; @@ -77,12 +74,9 @@ static > > int mana_ib_gd_destroy_mr(struct mana_ib_dev *dev, u64 mr_handle) { > > struct gdma_destroy_mr_response resp = {}; > > struct gdma_destroy_mr_request req = {}; > > - struct gdma_dev *mdev = dev->gdma_dev; > > - struct gdma_context *gc; > > + struct gdma_context *gc = mdev_to_gc(dev); > > int err; > > > > - gc = mdev->gdma_context; > > - > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_MR, sizeof(req), > > sizeof(resp)); > > > > @@ -164,8 +158,7 @@ struct ib_mr *mana_ib_reg_user_mr(struct ib_pd > *ibpd, u64 start, u64 length, > > return &mr->ibmr; > > > > err_dma_region: > > - mana_gd_destroy_dma_region(dev->gdma_dev->gdma_context, > > - dma_region_handle); > > + mana_gd_destroy_dma_region(mdev_to_gc(dev), dma_region_handle); > > > > err_umem: > > ib_umem_release(mr->umem); > > diff --git a/drivers/infiniband/hw/mana/qp.c > > b/drivers/infiniband/hw/mana/qp.c index e6d063d45..e889c798f 100644 > > --- a/drivers/infiniband/hw/mana/qp.c > > +++ b/drivers/infiniband/hw/mana/qp.c > > @@ -17,12 +17,10 @@ static int mana_ib_cfg_vport_steering(struct > mana_ib_dev *dev, > > struct mana_cfg_rx_steer_resp resp = {}; > > mana_handle_t *req_indir_tab; > > struct gdma_context *gc; > > - struct gdma_dev *mdev; > > u32 req_buf_size; > > int i, err; > > > > - gc = dev->gdma_dev->gdma_context; > > - mdev = &gc->mana; > > + gc = mdev_to_gc(dev); > > > > req_buf_size = > > sizeof(*req) + sizeof(mana_handle_t) * > > MANA_INDIRECT_TABLE_SIZE; @@ -39,7 +37,7 @@ static int > mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, > > req->rx_enable = 1; > > req->update_default_rxobj = 1; > > req->default_rxobj = default_rxobj; > > - req->hdr.dev_id = mdev->dev_id; > > + req->hdr.dev_id = gc->mana.dev_id; > > > > /* If there are more than 1 entries in indirection table, enable RSS */ > > if (log_ind_tbl_size) > > @@ -106,7 +104,6 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > struct ib_pd *pd, > > struct gdma_queue **gdma_cq_allocated; > > mana_handle_t *mana_ind_table; > > struct mana_port_context *mpc; > > - struct gdma_queue *gdma_cq; > > unsigned int ind_tbl_size; > > struct net_device *ndev; > > struct mana_ib_cq *cq; > > @@ -231,19 +228,11 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > struct ib_pd *pd, > > mana_ind_table[i] = wq->rx_object; > > > > /* Create CQ table entry */ > > - WARN_ON(gc->cq_table[cq->id]); > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > - if (!gdma_cq) { > > - ret = -ENOMEM; > > + ret = mana_ib_install_cq_cb(mdev, cq); > > + if (!ret) > > goto fail; > > - } > > - gdma_cq_allocated[i] = gdma_cq; > > > > - gdma_cq->cq.context = cq; > > - gdma_cq->type = GDMA_CQ; > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > - gdma_cq->id = cq->id; > > - gc->cq_table[cq->id] = gdma_cq; > > + gdma_cq_allocated[i] = gc->cq_table[cq->id]; > > } > > resp.num_entries = i; > > > > @@ -409,18 +398,9 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, > struct ib_pd *ibpd, > > send_cq->id = cq_spec.queue_index; > > > > /* Create CQ table entry */ > > - WARN_ON(gc->cq_table[send_cq->id]); > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > - if (!gdma_cq) { > > - err = -ENOMEM; > > + err = mana_ib_install_cq_cb(mdev, send_cq); > > + if (err) > > goto err_destroy_wq_obj; > > - } > > - > > - gdma_cq->cq.context = send_cq; > > - gdma_cq->type = GDMA_CQ; > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > - gdma_cq->id = send_cq->id; > > - gc->cq_table[send_cq->id] = gdma_cq; > > > > ibdev_dbg(&mdev->ib_dev, > > "ret %d qp->tx_object 0x%llx sq id %llu cq id %llu\n", > > err, @@ -442,7 +422,7 @@ static int mana_ib_create_qp_raw(struct ib_qp > > *ibqp, struct ib_pd *ibpd, > > > > err_release_gdma_cq: > > kfree(gdma_cq); > > - gd->gdma_context->cq_table[send_cq->id] = NULL; > > + gc->cq_table[send_cq->id] = NULL; > > > > err_destroy_wq_obj: > > mana_destroy_wq_obj(mpc, GDMA_SQ, qp->tx_object); > > > > base-commit: d24b923f1d696ddacb09f0f2d1b1f4f045cfe65e > > prerequisite-patch-id: 1b5d35ba40b675d080bfbe6a0e73b0dd163f4a03 > > -- > > 2.43.0 > > > > > ________________________________________ > From: Leon Romanovsky <leon@kernel.org> > Sent: Thursday, January 11, 2024 12:14 PM > To: Konstantin Taranov > Cc: Konstantin Taranov; Long Li; jgg@ziepe.ca; linux-rdma@vger.kernel.org; linux- > kernel@vger.kernel.org > Subject: [EXTERNAL] Re: [PATCH next v2 1/1] RDMA/mana_ib: Introduce three > helper functions to clean mana_ib code > > [You don't often get email from leon@kernel.org. Learn why this is important at > https://aka.ms/LearnAboutSenderIdentification ] > > On Wed, Jan 10, 2024 at 06:14:34AM -0800, Konstantin Taranov wrote: > > From: Konstantin Taranov <kotaranov@microsoft.com> > > > > This patch aims to address two issues in mana_ib: > > 1) Unsafe and inconsistent access to gdma_dev and gdma_context > > And how is it safe now? What is unsafe here? > > > 2) Code repetitions > > > > As a rule of thumb, functions should not access gdma_dev directly > > > > Introduced functions: > > 1) mdev_to_gc > > Which is exactly "mdev->gdma_dev->gdma_context" as before. > > > 2) mana_ib_get_netdev > > 3) mana_ib_install_cq_cb > > > > > > We are in merge window and cleanup patch will need to wait till it ends. > > Thanks > > > Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> > > --- > > Sorry that was sent again, I forgot to add RDMA/mana_ib to the subject > > --- > > drivers/infiniband/hw/mana/cq.c | 23 ++++++++++++++-- > > drivers/infiniband/hw/mana/main.c | 40 ++++++++++------------------ > > drivers/infiniband/hw/mana/mana_ib.h | 17 ++++++++++++ > > drivers/infiniband/hw/mana/mr.c | 13 +++------ > > drivers/infiniband/hw/mana/qp.c | 36 ++++++------------------- > > 5 files changed, 63 insertions(+), 66 deletions(-) > > > > diff --git a/drivers/infiniband/hw/mana/cq.c > > b/drivers/infiniband/hw/mana/cq.c index 83ebd0705..255e74ab7 100644 > > --- a/drivers/infiniband/hw/mana/cq.c > > +++ b/drivers/infiniband/hw/mana/cq.c > > @@ -16,7 +16,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > ib_cq_init_attr *attr, > > int err; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > if (udata->inlen < sizeof(ucmd)) > > return -EINVAL; > > @@ -81,7 +81,7 @@ int mana_ib_destroy_cq(struct ib_cq *ibcq, struct > ib_udata *udata) > > int err; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > err = mana_ib_gd_destroy_dma_region(mdev, cq->gdma_region); > > if (err) { > > @@ -107,3 +107,22 @@ void mana_ib_cq_handler(void *ctx, struct > gdma_queue *gdma_cq) > > if (cq->ibcq.comp_handler) > > cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); > > } > > + > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > +*cq) { > > + struct gdma_context *gc = mdev_to_gc(mdev); > > + struct gdma_queue *gdma_cq; > > + > > + /* Create CQ table entry */ > > + WARN_ON(gc->cq_table[cq->id]); > > + gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > + if (!gdma_cq) > > + return -ENOMEM; > > + > > + gdma_cq->cq.context = cq; > > + gdma_cq->type = GDMA_CQ; > > + gdma_cq->cq.callback = mana_ib_cq_handler; > > + gdma_cq->id = cq->id; > > + gc->cq_table[cq->id] = gdma_cq; > > + return 0; > > +} > > diff --git a/drivers/infiniband/hw/mana/main.c > > b/drivers/infiniband/hw/mana/main.c > > index faca09245..29dd2438d 100644 > > --- a/drivers/infiniband/hw/mana/main.c > > +++ b/drivers/infiniband/hw/mana/main.c > > @@ -8,13 +8,10 @@ > > void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd, > > u32 port) > > { > > - struct gdma_dev *gd = &dev->gdma_dev->gdma_context->mana; > > struct mana_port_context *mpc; > > struct net_device *ndev; > > - struct mana_context *mc; > > > > - mc = gd->driver_data; > > - ndev = mc->ports[port]; > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > mpc = netdev_priv(ndev); > > > > mutex_lock(&pd->vport_mutex); > > @@ -31,14 +28,11 @@ void mana_ib_uncfg_vport(struct mana_ib_dev *dev, > > struct mana_ib_pd *pd, int mana_ib_cfg_vport(struct mana_ib_dev *dev, u32 > port, struct mana_ib_pd *pd, > > u32 doorbell_id) > > { > > - struct gdma_dev *mdev = &dev->gdma_dev->gdma_context->mana; > > struct mana_port_context *mpc; > > - struct mana_context *mc; > > struct net_device *ndev; > > int err; > > > > - mc = mdev->driver_data; > > - ndev = mc->ports[port]; > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > mpc = netdev_priv(ndev); > > > > mutex_lock(&pd->vport_mutex); > > @@ -79,17 +73,17 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct > ib_udata *udata) > > struct gdma_create_pd_req req = {}; > > enum gdma_pd_flags flags = 0; > > struct mana_ib_dev *dev; > > - struct gdma_dev *mdev; > > + struct gdma_context *gc; > > int err; > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - mdev = dev->gdma_dev; > > + gc = mdev_to_gc(dev); > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_PD, sizeof(req), > > sizeof(resp)); > > > > req.flags = flags; > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > sizeof(resp), &resp); > > > > if (err || resp.hdr.status) { > > @@ -119,17 +113,17 @@ int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct > ib_udata *udata) > > struct gdma_destory_pd_resp resp = {}; > > struct gdma_destroy_pd_req req = {}; > > struct mana_ib_dev *dev; > > - struct gdma_dev *mdev; > > + struct gdma_context *gc; > > int err; > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - mdev = dev->gdma_dev; > > + gc = mdev_to_gc(dev); > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_PD, sizeof(req), > > sizeof(resp)); > > > > req.pd_handle = pd->pd_handle; > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > sizeof(resp), &resp); > > > > if (err || resp.hdr.status) { > > @@ -206,13 +200,11 @@ int mana_ib_alloc_ucontext(struct ib_ucontext > *ibcontext, > > struct ib_device *ibdev = ibcontext->device; > > struct mana_ib_dev *mdev; > > struct gdma_context *gc; > > - struct gdma_dev *dev; > > int doorbell_page; > > int ret; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - dev = mdev->gdma_dev; > > - gc = dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > /* Allocate a doorbell page index */ > > ret = mana_gd_allocate_doorbell_page(gc, &doorbell_page); @@ > > -238,7 +230,7 @@ void mana_ib_dealloc_ucontext(struct ib_ucontext > *ibcontext) > > int ret; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > ret = mana_gd_destroy_doorbell_page(gc, mana_ucontext->doorbell); > > if (ret) > > @@ -322,15 +314,13 @@ int mana_ib_gd_create_dma_region(struct > mana_ib_dev *dev, struct ib_umem *umem, > > size_t max_pgs_create_cmd; > > struct gdma_context *gc; > > size_t num_pages_total; > > - struct gdma_dev *mdev; > > unsigned long page_sz; > > unsigned int tail = 0; > > u64 *page_addr_list; > > void *request_buf; > > int err; > > > > - mdev = dev->gdma_dev; > > - gc = mdev->gdma_context; > > + gc = mdev_to_gc(dev); > > hwc = gc->hwc.driver_data; > > > > /* Hardware requires dma region to align to chosen page size */ > > @@ -426,10 +416,8 @@ int mana_ib_gd_create_dma_region(struct > > mana_ib_dev *dev, struct ib_umem *umem, > > > > int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev, u64 > > gdma_region) { > > - struct gdma_dev *mdev = dev->gdma_dev; > > - struct gdma_context *gc; > > + struct gdma_context *gc = mdev_to_gc(dev); > > > > - gc = mdev->gdma_context; > > ibdev_dbg(&dev->ib_dev, "destroy dma region 0x%llx\n", > > gdma_region); > > > > return mana_gd_destroy_dma_region(gc, gdma_region); @@ -447,7 > > +435,7 @@ int mana_ib_mmap(struct ib_ucontext *ibcontext, struct > vm_area_struct *vma) > > int ret; > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > - gc = mdev->gdma_dev->gdma_context; > > + gc = mdev_to_gc(mdev); > > > > if (vma->vm_pgoff != 0) { > > ibdev_dbg(ibdev, "Unexpected vm_pgoff %lu\n", > > vma->vm_pgoff); @@ -531,7 +519,7 @@ int > mana_ib_gd_query_adapter_caps(struct mana_ib_dev *dev) > > req.hdr.resp.msg_version = GDMA_MESSAGE_V3; > > req.hdr.dev_id = dev->gdma_dev->dev_id; > > > > - err = mana_gd_send_request(dev->gdma_dev->gdma_context, sizeof(req), > > + err = mana_gd_send_request(mdev_to_gc(dev), sizeof(req), > > &req, sizeof(resp), &resp); > > > > if (err) { > > diff --git a/drivers/infiniband/hw/mana/mana_ib.h > > b/drivers/infiniband/hw/mana/mana_ib.h > > index 6bdc0f549..6b15b2ab5 100644 > > --- a/drivers/infiniband/hw/mana/mana_ib.h > > +++ b/drivers/infiniband/hw/mana/mana_ib.h > > @@ -142,6 +142,22 @@ struct mana_ib_query_adapter_caps_resp { > > u32 max_inline_data_size; > > }; /* HW Data */ > > > > +static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev > > +*mdev) { > > + return mdev->gdma_dev->gdma_context; } > > + > > +static inline struct net_device *mana_ib_get_netdev(struct ib_device > > +*ibdev, u32 port) { > > + struct mana_ib_dev *mdev = container_of(ibdev, struct mana_ib_dev, > ib_dev); > > + struct gdma_context *gc = mdev_to_gc(mdev); > > + struct mana_context *mc = gc->mana.driver_data; > > + > > + if (port < 1 || port > mc->num_ports) > > + return NULL; > > + return mc->ports[port - 1]; > > +} > > + > > int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem > *umem, > > mana_handle_t *gdma_region); > > > > @@ -188,6 +204,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > ib_cq_init_attr *attr, > > struct ib_udata *udata); > > > > int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > +*cq); > > > > int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > diff --git a/drivers/infiniband/hw/mana/mr.c > > b/drivers/infiniband/hw/mana/mr.c index 351207c60..ee4d4f834 100644 > > --- a/drivers/infiniband/hw/mana/mr.c > > +++ b/drivers/infiniband/hw/mana/mr.c > > @@ -30,12 +30,9 @@ static int mana_ib_gd_create_mr(struct mana_ib_dev > > *dev, struct mana_ib_mr *mr, { > > struct gdma_create_mr_response resp = {}; > > struct gdma_create_mr_request req = {}; > > - struct gdma_dev *mdev = dev->gdma_dev; > > - struct gdma_context *gc; > > + struct gdma_context *gc = mdev_to_gc(dev); > > int err; > > > > - gc = mdev->gdma_context; > > - > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_MR, sizeof(req), > > sizeof(resp)); > > req.pd_handle = mr_params->pd_handle; @@ -77,12 +74,9 @@ static > > int mana_ib_gd_destroy_mr(struct mana_ib_dev *dev, u64 mr_handle) { > > struct gdma_destroy_mr_response resp = {}; > > struct gdma_destroy_mr_request req = {}; > > - struct gdma_dev *mdev = dev->gdma_dev; > > - struct gdma_context *gc; > > + struct gdma_context *gc = mdev_to_gc(dev); > > int err; > > > > - gc = mdev->gdma_context; > > - > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_MR, sizeof(req), > > sizeof(resp)); > > > > @@ -164,8 +158,7 @@ struct ib_mr *mana_ib_reg_user_mr(struct ib_pd > *ibpd, u64 start, u64 length, > > return &mr->ibmr; > > > > err_dma_region: > > - mana_gd_destroy_dma_region(dev->gdma_dev->gdma_context, > > - dma_region_handle); > > + mana_gd_destroy_dma_region(mdev_to_gc(dev), dma_region_handle); > > > > err_umem: > > ib_umem_release(mr->umem); > > diff --git a/drivers/infiniband/hw/mana/qp.c > > b/drivers/infiniband/hw/mana/qp.c index e6d063d45..e889c798f 100644 > > --- a/drivers/infiniband/hw/mana/qp.c > > +++ b/drivers/infiniband/hw/mana/qp.c > > @@ -17,12 +17,10 @@ static int mana_ib_cfg_vport_steering(struct > mana_ib_dev *dev, > > struct mana_cfg_rx_steer_resp resp = {}; > > mana_handle_t *req_indir_tab; > > struct gdma_context *gc; > > - struct gdma_dev *mdev; > > u32 req_buf_size; > > int i, err; > > > > - gc = dev->gdma_dev->gdma_context; > > - mdev = &gc->mana; > > + gc = mdev_to_gc(dev); > > > > req_buf_size = > > sizeof(*req) + sizeof(mana_handle_t) * > > MANA_INDIRECT_TABLE_SIZE; @@ -39,7 +37,7 @@ static int > mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, > > req->rx_enable = 1; > > req->update_default_rxobj = 1; > > req->default_rxobj = default_rxobj; > > - req->hdr.dev_id = mdev->dev_id; > > + req->hdr.dev_id = gc->mana.dev_id; > > > > /* If there are more than 1 entries in indirection table, enable RSS */ > > if (log_ind_tbl_size) > > @@ -106,7 +104,6 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > struct ib_pd *pd, > > struct gdma_queue **gdma_cq_allocated; > > mana_handle_t *mana_ind_table; > > struct mana_port_context *mpc; > > - struct gdma_queue *gdma_cq; > > unsigned int ind_tbl_size; > > struct net_device *ndev; > > struct mana_ib_cq *cq; > > @@ -231,19 +228,11 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > struct ib_pd *pd, > > mana_ind_table[i] = wq->rx_object; > > > > /* Create CQ table entry */ > > - WARN_ON(gc->cq_table[cq->id]); > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > - if (!gdma_cq) { > > - ret = -ENOMEM; > > + ret = mana_ib_install_cq_cb(mdev, cq); > > + if (!ret) > > goto fail; > > - } > > - gdma_cq_allocated[i] = gdma_cq; > > > > - gdma_cq->cq.context = cq; > > - gdma_cq->type = GDMA_CQ; > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > - gdma_cq->id = cq->id; > > - gc->cq_table[cq->id] = gdma_cq; > > + gdma_cq_allocated[i] = gc->cq_table[cq->id]; > > } > > resp.num_entries = i; > > > > @@ -409,18 +398,9 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, > struct ib_pd *ibpd, > > send_cq->id = cq_spec.queue_index; > > > > /* Create CQ table entry */ > > - WARN_ON(gc->cq_table[send_cq->id]); > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > - if (!gdma_cq) { > > - err = -ENOMEM; > > + err = mana_ib_install_cq_cb(mdev, send_cq); > > + if (err) > > goto err_destroy_wq_obj; > > - } > > - > > - gdma_cq->cq.context = send_cq; > > - gdma_cq->type = GDMA_CQ; > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > - gdma_cq->id = send_cq->id; > > - gc->cq_table[send_cq->id] = gdma_cq; > > > > ibdev_dbg(&mdev->ib_dev, > > "ret %d qp->tx_object 0x%llx sq id %llu cq id %llu\n", > > err, @@ -442,7 +422,7 @@ static int mana_ib_create_qp_raw(struct ib_qp > > *ibqp, struct ib_pd *ibpd, > > > > err_release_gdma_cq: > > kfree(gdma_cq); > > - gd->gdma_context->cq_table[send_cq->id] = NULL; > > + gc->cq_table[send_cq->id] = NULL; > > > > err_destroy_wq_obj: > > mana_destroy_wq_obj(mpc, GDMA_SQ, qp->tx_object); > > > > base-commit: d24b923f1d696ddacb09f0f2d1b1f4f045cfe65e > > prerequisite-patch-id: 1b5d35ba40b675d080bfbe6a0e73b0dd163f4a03 > > -- > > 2.43.0 > >
On Thu, Jan 11, 2024 at 05:15:06PM +0000, Long Li wrote: > > Subject: Re: [EXTERNAL] Re: [PATCH next v2 1/1] RDMA/mana_ib: Introduce > > three helper functions to clean mana_ib code > > > > Hi Leon, > > > > // Sorry for re-sending the email. I did not know that I had to enable plain-text > > messages in outlook. > > > > thanks for pointing out the merge window. I will resend after it. > > > > I can also split it into 2 commits (mdev_to_gc and mana_ib_get_netdev in one, > > and CQ cb in the other), if it is required. > > I cannot separate "mdev_to_gc" and "mana_ib_get_netdev " into 2 commits as it > > will double the changes and obstruct the reader. > > > > > And how is it safe now? What is unsafe here? > > > > The issue with the gdma_dev is the following. > > Our mana HW device has two gdma_devs: one for ethernet and one for rdma. > > And in the code of mana_ib.ko it is not clearly indicated what gdma_dev is used. > > So it means in some functions it is ethernet and in some it is rdma. > > The use of a wrong device in the hardware channel leads to errors and waste > > time of developers. > > > > This problem is addressed as follows: > > We avoid using gdma_dev explicitly in functions of mana_ib.ko except the init. > > As the gdma_context is only one, we abstract it into mdev_to_gc, to prevent the > > user to declare gdma_dev. > > When a function actually needs to use gdma_dev of the ethernet, it uses netdev, > > which encapsulates the correct gdma_dev. > > Getting netdev is implemented with mana_ib_get_netdev, to prevent the user to > > declare gdma_dev. > > When a function needs to use gdma_dev of the rdma, it will use struct > > mana_ib_dev (a child of ib_dev) in its hardware channel requests. > > > > I hope it explains what becomes safer. If it was useful, I can add this explanation > > to the commit message. > > You patch doesn't make it safer, but rather makes it easier to understand. The wording "Unsafe and inconsistent" should be removed. Right, I have no problems with cleanup patch, just don't want to see wrong/inaccurate description. Thanks > > Long > > > > > Thanks, > > Konstantin > > > > ________________________________________ > > From: Leon Romanovsky <leon@kernel.org> > > Sent: Thursday, January 11, 2024 12:14 PM > > To: Konstantin Taranov > > Cc: Konstantin Taranov; Long Li; jgg@ziepe.ca; linux-rdma@vger.kernel.org; linux- > > kernel@vger.kernel.org > > Subject: [EXTERNAL] Re: [PATCH next v2 1/1] RDMA/mana_ib: Introduce three > > helper functions to clean mana_ib code > > > > [You don't often get email from leon@kernel.org. Learn why this is important at > > https://aka.ms/LearnAboutSenderIdentification ] > > > > On Wed, Jan 10, 2024 at 06:14:34AM -0800, Konstantin Taranov wrote: > > > From: Konstantin Taranov <kotaranov@microsoft.com> > > > > > > This patch aims to address two issues in mana_ib: > > > 1) Unsafe and inconsistent access to gdma_dev and gdma_context > > > > And how is it safe now? What is unsafe here? > > > > > 2) Code repetitions > > > > > > As a rule of thumb, functions should not access gdma_dev directly > > > > > > Introduced functions: > > > 1) mdev_to_gc > > > > Which is exactly "mdev->gdma_dev->gdma_context" as before. > > > > > 2) mana_ib_get_netdev > > > 3) mana_ib_install_cq_cb > > > > > > > > > > We are in merge window and cleanup patch will need to wait till it ends. > > > > Thanks > > > > > Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> > > > --- > > > Sorry that was sent again, I forgot to add RDMA/mana_ib to the subject > > > --- > > > drivers/infiniband/hw/mana/cq.c | 23 ++++++++++++++-- > > > drivers/infiniband/hw/mana/main.c | 40 ++++++++++------------------ > > > drivers/infiniband/hw/mana/mana_ib.h | 17 ++++++++++++ > > > drivers/infiniband/hw/mana/mr.c | 13 +++------ > > > drivers/infiniband/hw/mana/qp.c | 36 ++++++------------------- > > > 5 files changed, 63 insertions(+), 66 deletions(-) > > > > > > diff --git a/drivers/infiniband/hw/mana/cq.c > > > b/drivers/infiniband/hw/mana/cq.c index 83ebd0705..255e74ab7 100644 > > > --- a/drivers/infiniband/hw/mana/cq.c > > > +++ b/drivers/infiniband/hw/mana/cq.c > > > @@ -16,7 +16,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > > ib_cq_init_attr *attr, > > > int err; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > if (udata->inlen < sizeof(ucmd)) > > > return -EINVAL; > > > @@ -81,7 +81,7 @@ int mana_ib_destroy_cq(struct ib_cq *ibcq, struct > > ib_udata *udata) > > > int err; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > err = mana_ib_gd_destroy_dma_region(mdev, cq->gdma_region); > > > if (err) { > > > @@ -107,3 +107,22 @@ void mana_ib_cq_handler(void *ctx, struct > > gdma_queue *gdma_cq) > > > if (cq->ibcq.comp_handler) > > > cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); > > > } > > > + > > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > > +*cq) { > > > + struct gdma_context *gc = mdev_to_gc(mdev); > > > + struct gdma_queue *gdma_cq; > > > + > > > + /* Create CQ table entry */ > > > + WARN_ON(gc->cq_table[cq->id]); > > > + gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > > + if (!gdma_cq) > > > + return -ENOMEM; > > > + > > > + gdma_cq->cq.context = cq; > > > + gdma_cq->type = GDMA_CQ; > > > + gdma_cq->cq.callback = mana_ib_cq_handler; > > > + gdma_cq->id = cq->id; > > > + gc->cq_table[cq->id] = gdma_cq; > > > + return 0; > > > +} > > > diff --git a/drivers/infiniband/hw/mana/main.c > > > b/drivers/infiniband/hw/mana/main.c > > > index faca09245..29dd2438d 100644 > > > --- a/drivers/infiniband/hw/mana/main.c > > > +++ b/drivers/infiniband/hw/mana/main.c > > > @@ -8,13 +8,10 @@ > > > void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd, > > > u32 port) > > > { > > > - struct gdma_dev *gd = &dev->gdma_dev->gdma_context->mana; > > > struct mana_port_context *mpc; > > > struct net_device *ndev; > > > - struct mana_context *mc; > > > > > > - mc = gd->driver_data; > > > - ndev = mc->ports[port]; > > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > > mpc = netdev_priv(ndev); > > > > > > mutex_lock(&pd->vport_mutex); > > > @@ -31,14 +28,11 @@ void mana_ib_uncfg_vport(struct mana_ib_dev *dev, > > > struct mana_ib_pd *pd, int mana_ib_cfg_vport(struct mana_ib_dev *dev, u32 > > port, struct mana_ib_pd *pd, > > > u32 doorbell_id) > > > { > > > - struct gdma_dev *mdev = &dev->gdma_dev->gdma_context->mana; > > > struct mana_port_context *mpc; > > > - struct mana_context *mc; > > > struct net_device *ndev; > > > int err; > > > > > > - mc = mdev->driver_data; > > > - ndev = mc->ports[port]; > > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > > mpc = netdev_priv(ndev); > > > > > > mutex_lock(&pd->vport_mutex); > > > @@ -79,17 +73,17 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct > > ib_udata *udata) > > > struct gdma_create_pd_req req = {}; > > > enum gdma_pd_flags flags = 0; > > > struct mana_ib_dev *dev; > > > - struct gdma_dev *mdev; > > > + struct gdma_context *gc; > > > int err; > > > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - mdev = dev->gdma_dev; > > > + gc = mdev_to_gc(dev); > > > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_PD, sizeof(req), > > > sizeof(resp)); > > > > > > req.flags = flags; > > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > > sizeof(resp), &resp); > > > > > > if (err || resp.hdr.status) { > > > @@ -119,17 +113,17 @@ int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct > > ib_udata *udata) > > > struct gdma_destory_pd_resp resp = {}; > > > struct gdma_destroy_pd_req req = {}; > > > struct mana_ib_dev *dev; > > > - struct gdma_dev *mdev; > > > + struct gdma_context *gc; > > > int err; > > > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - mdev = dev->gdma_dev; > > > + gc = mdev_to_gc(dev); > > > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_PD, sizeof(req), > > > sizeof(resp)); > > > > > > req.pd_handle = pd->pd_handle; > > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > > sizeof(resp), &resp); > > > > > > if (err || resp.hdr.status) { > > > @@ -206,13 +200,11 @@ int mana_ib_alloc_ucontext(struct ib_ucontext > > *ibcontext, > > > struct ib_device *ibdev = ibcontext->device; > > > struct mana_ib_dev *mdev; > > > struct gdma_context *gc; > > > - struct gdma_dev *dev; > > > int doorbell_page; > > > int ret; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - dev = mdev->gdma_dev; > > > - gc = dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > /* Allocate a doorbell page index */ > > > ret = mana_gd_allocate_doorbell_page(gc, &doorbell_page); @@ > > > -238,7 +230,7 @@ void mana_ib_dealloc_ucontext(struct ib_ucontext > > *ibcontext) > > > int ret; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > ret = mana_gd_destroy_doorbell_page(gc, mana_ucontext->doorbell); > > > if (ret) > > > @@ -322,15 +314,13 @@ int mana_ib_gd_create_dma_region(struct > > mana_ib_dev *dev, struct ib_umem *umem, > > > size_t max_pgs_create_cmd; > > > struct gdma_context *gc; > > > size_t num_pages_total; > > > - struct gdma_dev *mdev; > > > unsigned long page_sz; > > > unsigned int tail = 0; > > > u64 *page_addr_list; > > > void *request_buf; > > > int err; > > > > > > - mdev = dev->gdma_dev; > > > - gc = mdev->gdma_context; > > > + gc = mdev_to_gc(dev); > > > hwc = gc->hwc.driver_data; > > > > > > /* Hardware requires dma region to align to chosen page size */ > > > @@ -426,10 +416,8 @@ int mana_ib_gd_create_dma_region(struct > > > mana_ib_dev *dev, struct ib_umem *umem, > > > > > > int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev, u64 > > > gdma_region) { > > > - struct gdma_dev *mdev = dev->gdma_dev; > > > - struct gdma_context *gc; > > > + struct gdma_context *gc = mdev_to_gc(dev); > > > > > > - gc = mdev->gdma_context; > > > ibdev_dbg(&dev->ib_dev, "destroy dma region 0x%llx\n", > > > gdma_region); > > > > > > return mana_gd_destroy_dma_region(gc, gdma_region); @@ -447,7 > > > +435,7 @@ int mana_ib_mmap(struct ib_ucontext *ibcontext, struct > > vm_area_struct *vma) > > > int ret; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > if (vma->vm_pgoff != 0) { > > > ibdev_dbg(ibdev, "Unexpected vm_pgoff %lu\n", > > > vma->vm_pgoff); @@ -531,7 +519,7 @@ int > > mana_ib_gd_query_adapter_caps(struct mana_ib_dev *dev) > > > req.hdr.resp.msg_version = GDMA_MESSAGE_V3; > > > req.hdr.dev_id = dev->gdma_dev->dev_id; > > > > > > - err = mana_gd_send_request(dev->gdma_dev->gdma_context, sizeof(req), > > > + err = mana_gd_send_request(mdev_to_gc(dev), sizeof(req), > > > &req, sizeof(resp), &resp); > > > > > > if (err) { > > > diff --git a/drivers/infiniband/hw/mana/mana_ib.h > > > b/drivers/infiniband/hw/mana/mana_ib.h > > > index 6bdc0f549..6b15b2ab5 100644 > > > --- a/drivers/infiniband/hw/mana/mana_ib.h > > > +++ b/drivers/infiniband/hw/mana/mana_ib.h > > > @@ -142,6 +142,22 @@ struct mana_ib_query_adapter_caps_resp { > > > u32 max_inline_data_size; > > > }; /* HW Data */ > > > > > > +static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev > > > +*mdev) { > > > + return mdev->gdma_dev->gdma_context; } > > > + > > > +static inline struct net_device *mana_ib_get_netdev(struct ib_device > > > +*ibdev, u32 port) { > > > + struct mana_ib_dev *mdev = container_of(ibdev, struct mana_ib_dev, > > ib_dev); > > > + struct gdma_context *gc = mdev_to_gc(mdev); > > > + struct mana_context *mc = gc->mana.driver_data; > > > + > > > + if (port < 1 || port > mc->num_ports) > > > + return NULL; > > > + return mc->ports[port - 1]; > > > +} > > > + > > > int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem > > *umem, > > > mana_handle_t *gdma_region); > > > > > > @@ -188,6 +204,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > > ib_cq_init_attr *attr, > > > struct ib_udata *udata); > > > > > > int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); > > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > > +*cq); > > > > > > int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > > int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > > diff --git a/drivers/infiniband/hw/mana/mr.c > > > b/drivers/infiniband/hw/mana/mr.c index 351207c60..ee4d4f834 100644 > > > --- a/drivers/infiniband/hw/mana/mr.c > > > +++ b/drivers/infiniband/hw/mana/mr.c > > > @@ -30,12 +30,9 @@ static int mana_ib_gd_create_mr(struct mana_ib_dev > > > *dev, struct mana_ib_mr *mr, { > > > struct gdma_create_mr_response resp = {}; > > > struct gdma_create_mr_request req = {}; > > > - struct gdma_dev *mdev = dev->gdma_dev; > > > - struct gdma_context *gc; > > > + struct gdma_context *gc = mdev_to_gc(dev); > > > int err; > > > > > > - gc = mdev->gdma_context; > > > - > > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_MR, sizeof(req), > > > sizeof(resp)); > > > req.pd_handle = mr_params->pd_handle; @@ -77,12 +74,9 @@ static > > > int mana_ib_gd_destroy_mr(struct mana_ib_dev *dev, u64 mr_handle) { > > > struct gdma_destroy_mr_response resp = {}; > > > struct gdma_destroy_mr_request req = {}; > > > - struct gdma_dev *mdev = dev->gdma_dev; > > > - struct gdma_context *gc; > > > + struct gdma_context *gc = mdev_to_gc(dev); > > > int err; > > > > > > - gc = mdev->gdma_context; > > > - > > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_MR, sizeof(req), > > > sizeof(resp)); > > > > > > @@ -164,8 +158,7 @@ struct ib_mr *mana_ib_reg_user_mr(struct ib_pd > > *ibpd, u64 start, u64 length, > > > return &mr->ibmr; > > > > > > err_dma_region: > > > - mana_gd_destroy_dma_region(dev->gdma_dev->gdma_context, > > > - dma_region_handle); > > > + mana_gd_destroy_dma_region(mdev_to_gc(dev), dma_region_handle); > > > > > > err_umem: > > > ib_umem_release(mr->umem); > > > diff --git a/drivers/infiniband/hw/mana/qp.c > > > b/drivers/infiniband/hw/mana/qp.c index e6d063d45..e889c798f 100644 > > > --- a/drivers/infiniband/hw/mana/qp.c > > > +++ b/drivers/infiniband/hw/mana/qp.c > > > @@ -17,12 +17,10 @@ static int mana_ib_cfg_vport_steering(struct > > mana_ib_dev *dev, > > > struct mana_cfg_rx_steer_resp resp = {}; > > > mana_handle_t *req_indir_tab; > > > struct gdma_context *gc; > > > - struct gdma_dev *mdev; > > > u32 req_buf_size; > > > int i, err; > > > > > > - gc = dev->gdma_dev->gdma_context; > > > - mdev = &gc->mana; > > > + gc = mdev_to_gc(dev); > > > > > > req_buf_size = > > > sizeof(*req) + sizeof(mana_handle_t) * > > > MANA_INDIRECT_TABLE_SIZE; @@ -39,7 +37,7 @@ static int > > mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, > > > req->rx_enable = 1; > > > req->update_default_rxobj = 1; > > > req->default_rxobj = default_rxobj; > > > - req->hdr.dev_id = mdev->dev_id; > > > + req->hdr.dev_id = gc->mana.dev_id; > > > > > > /* If there are more than 1 entries in indirection table, enable RSS */ > > > if (log_ind_tbl_size) > > > @@ -106,7 +104,6 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > > struct ib_pd *pd, > > > struct gdma_queue **gdma_cq_allocated; > > > mana_handle_t *mana_ind_table; > > > struct mana_port_context *mpc; > > > - struct gdma_queue *gdma_cq; > > > unsigned int ind_tbl_size; > > > struct net_device *ndev; > > > struct mana_ib_cq *cq; > > > @@ -231,19 +228,11 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > > struct ib_pd *pd, > > > mana_ind_table[i] = wq->rx_object; > > > > > > /* Create CQ table entry */ > > > - WARN_ON(gc->cq_table[cq->id]); > > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > > - if (!gdma_cq) { > > > - ret = -ENOMEM; > > > + ret = mana_ib_install_cq_cb(mdev, cq); > > > + if (!ret) > > > goto fail; > > > - } > > > - gdma_cq_allocated[i] = gdma_cq; > > > > > > - gdma_cq->cq.context = cq; > > > - gdma_cq->type = GDMA_CQ; > > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > > - gdma_cq->id = cq->id; > > > - gc->cq_table[cq->id] = gdma_cq; > > > + gdma_cq_allocated[i] = gc->cq_table[cq->id]; > > > } > > > resp.num_entries = i; > > > > > > @@ -409,18 +398,9 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, > > struct ib_pd *ibpd, > > > send_cq->id = cq_spec.queue_index; > > > > > > /* Create CQ table entry */ > > > - WARN_ON(gc->cq_table[send_cq->id]); > > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > > - if (!gdma_cq) { > > > - err = -ENOMEM; > > > + err = mana_ib_install_cq_cb(mdev, send_cq); > > > + if (err) > > > goto err_destroy_wq_obj; > > > - } > > > - > > > - gdma_cq->cq.context = send_cq; > > > - gdma_cq->type = GDMA_CQ; > > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > > - gdma_cq->id = send_cq->id; > > > - gc->cq_table[send_cq->id] = gdma_cq; > > > > > > ibdev_dbg(&mdev->ib_dev, > > > "ret %d qp->tx_object 0x%llx sq id %llu cq id %llu\n", > > > err, @@ -442,7 +422,7 @@ static int mana_ib_create_qp_raw(struct ib_qp > > > *ibqp, struct ib_pd *ibpd, > > > > > > err_release_gdma_cq: > > > kfree(gdma_cq); > > > - gd->gdma_context->cq_table[send_cq->id] = NULL; > > > + gc->cq_table[send_cq->id] = NULL; > > > > > > err_destroy_wq_obj: > > > mana_destroy_wq_obj(mpc, GDMA_SQ, qp->tx_object); > > > > > > base-commit: d24b923f1d696ddacb09f0f2d1b1f4f045cfe65e > > > prerequisite-patch-id: 1b5d35ba40b675d080bfbe6a0e73b0dd163f4a03 > > > -- > > > 2.43.0 > > > > > > > > > ________________________________________ > > From: Leon Romanovsky <leon@kernel.org> > > Sent: Thursday, January 11, 2024 12:14 PM > > To: Konstantin Taranov > > Cc: Konstantin Taranov; Long Li; jgg@ziepe.ca; linux-rdma@vger.kernel.org; linux- > > kernel@vger.kernel.org > > Subject: [EXTERNAL] Re: [PATCH next v2 1/1] RDMA/mana_ib: Introduce three > > helper functions to clean mana_ib code > > > > [You don't often get email from leon@kernel.org. Learn why this is important at > > https://aka.ms/LearnAboutSenderIdentification ] > > > > On Wed, Jan 10, 2024 at 06:14:34AM -0800, Konstantin Taranov wrote: > > > From: Konstantin Taranov <kotaranov@microsoft.com> > > > > > > This patch aims to address two issues in mana_ib: > > > 1) Unsafe and inconsistent access to gdma_dev and gdma_context > > > > And how is it safe now? What is unsafe here? > > > > > 2) Code repetitions > > > > > > As a rule of thumb, functions should not access gdma_dev directly > > > > > > Introduced functions: > > > 1) mdev_to_gc > > > > Which is exactly "mdev->gdma_dev->gdma_context" as before. > > > > > 2) mana_ib_get_netdev > > > 3) mana_ib_install_cq_cb > > > > > > > > > > We are in merge window and cleanup patch will need to wait till it ends. > > > > Thanks > > > > > Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> > > > --- > > > Sorry that was sent again, I forgot to add RDMA/mana_ib to the subject > > > --- > > > drivers/infiniband/hw/mana/cq.c | 23 ++++++++++++++-- > > > drivers/infiniband/hw/mana/main.c | 40 ++++++++++------------------ > > > drivers/infiniband/hw/mana/mana_ib.h | 17 ++++++++++++ > > > drivers/infiniband/hw/mana/mr.c | 13 +++------ > > > drivers/infiniband/hw/mana/qp.c | 36 ++++++------------------- > > > 5 files changed, 63 insertions(+), 66 deletions(-) > > > > > > diff --git a/drivers/infiniband/hw/mana/cq.c > > > b/drivers/infiniband/hw/mana/cq.c index 83ebd0705..255e74ab7 100644 > > > --- a/drivers/infiniband/hw/mana/cq.c > > > +++ b/drivers/infiniband/hw/mana/cq.c > > > @@ -16,7 +16,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > > ib_cq_init_attr *attr, > > > int err; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > if (udata->inlen < sizeof(ucmd)) > > > return -EINVAL; > > > @@ -81,7 +81,7 @@ int mana_ib_destroy_cq(struct ib_cq *ibcq, struct > > ib_udata *udata) > > > int err; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > err = mana_ib_gd_destroy_dma_region(mdev, cq->gdma_region); > > > if (err) { > > > @@ -107,3 +107,22 @@ void mana_ib_cq_handler(void *ctx, struct > > gdma_queue *gdma_cq) > > > if (cq->ibcq.comp_handler) > > > cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); > > > } > > > + > > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > > +*cq) { > > > + struct gdma_context *gc = mdev_to_gc(mdev); > > > + struct gdma_queue *gdma_cq; > > > + > > > + /* Create CQ table entry */ > > > + WARN_ON(gc->cq_table[cq->id]); > > > + gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > > + if (!gdma_cq) > > > + return -ENOMEM; > > > + > > > + gdma_cq->cq.context = cq; > > > + gdma_cq->type = GDMA_CQ; > > > + gdma_cq->cq.callback = mana_ib_cq_handler; > > > + gdma_cq->id = cq->id; > > > + gc->cq_table[cq->id] = gdma_cq; > > > + return 0; > > > +} > > > diff --git a/drivers/infiniband/hw/mana/main.c > > > b/drivers/infiniband/hw/mana/main.c > > > index faca09245..29dd2438d 100644 > > > --- a/drivers/infiniband/hw/mana/main.c > > > +++ b/drivers/infiniband/hw/mana/main.c > > > @@ -8,13 +8,10 @@ > > > void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd, > > > u32 port) > > > { > > > - struct gdma_dev *gd = &dev->gdma_dev->gdma_context->mana; > > > struct mana_port_context *mpc; > > > struct net_device *ndev; > > > - struct mana_context *mc; > > > > > > - mc = gd->driver_data; > > > - ndev = mc->ports[port]; > > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > > mpc = netdev_priv(ndev); > > > > > > mutex_lock(&pd->vport_mutex); > > > @@ -31,14 +28,11 @@ void mana_ib_uncfg_vport(struct mana_ib_dev *dev, > > > struct mana_ib_pd *pd, int mana_ib_cfg_vport(struct mana_ib_dev *dev, u32 > > port, struct mana_ib_pd *pd, > > > u32 doorbell_id) > > > { > > > - struct gdma_dev *mdev = &dev->gdma_dev->gdma_context->mana; > > > struct mana_port_context *mpc; > > > - struct mana_context *mc; > > > struct net_device *ndev; > > > int err; > > > > > > - mc = mdev->driver_data; > > > - ndev = mc->ports[port]; > > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > > mpc = netdev_priv(ndev); > > > > > > mutex_lock(&pd->vport_mutex); > > > @@ -79,17 +73,17 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct > > ib_udata *udata) > > > struct gdma_create_pd_req req = {}; > > > enum gdma_pd_flags flags = 0; > > > struct mana_ib_dev *dev; > > > - struct gdma_dev *mdev; > > > + struct gdma_context *gc; > > > int err; > > > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - mdev = dev->gdma_dev; > > > + gc = mdev_to_gc(dev); > > > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_PD, sizeof(req), > > > sizeof(resp)); > > > > > > req.flags = flags; > > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > > sizeof(resp), &resp); > > > > > > if (err || resp.hdr.status) { > > > @@ -119,17 +113,17 @@ int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct > > ib_udata *udata) > > > struct gdma_destory_pd_resp resp = {}; > > > struct gdma_destroy_pd_req req = {}; > > > struct mana_ib_dev *dev; > > > - struct gdma_dev *mdev; > > > + struct gdma_context *gc; > > > int err; > > > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - mdev = dev->gdma_dev; > > > + gc = mdev_to_gc(dev); > > > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_PD, sizeof(req), > > > sizeof(resp)); > > > > > > req.pd_handle = pd->pd_handle; > > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > > sizeof(resp), &resp); > > > > > > if (err || resp.hdr.status) { > > > @@ -206,13 +200,11 @@ int mana_ib_alloc_ucontext(struct ib_ucontext > > *ibcontext, > > > struct ib_device *ibdev = ibcontext->device; > > > struct mana_ib_dev *mdev; > > > struct gdma_context *gc; > > > - struct gdma_dev *dev; > > > int doorbell_page; > > > int ret; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - dev = mdev->gdma_dev; > > > - gc = dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > /* Allocate a doorbell page index */ > > > ret = mana_gd_allocate_doorbell_page(gc, &doorbell_page); @@ > > > -238,7 +230,7 @@ void mana_ib_dealloc_ucontext(struct ib_ucontext > > *ibcontext) > > > int ret; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > ret = mana_gd_destroy_doorbell_page(gc, mana_ucontext->doorbell); > > > if (ret) > > > @@ -322,15 +314,13 @@ int mana_ib_gd_create_dma_region(struct > > mana_ib_dev *dev, struct ib_umem *umem, > > > size_t max_pgs_create_cmd; > > > struct gdma_context *gc; > > > size_t num_pages_total; > > > - struct gdma_dev *mdev; > > > unsigned long page_sz; > > > unsigned int tail = 0; > > > u64 *page_addr_list; > > > void *request_buf; > > > int err; > > > > > > - mdev = dev->gdma_dev; > > > - gc = mdev->gdma_context; > > > + gc = mdev_to_gc(dev); > > > hwc = gc->hwc.driver_data; > > > > > > /* Hardware requires dma region to align to chosen page size */ > > > @@ -426,10 +416,8 @@ int mana_ib_gd_create_dma_region(struct > > > mana_ib_dev *dev, struct ib_umem *umem, > > > > > > int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev, u64 > > > gdma_region) { > > > - struct gdma_dev *mdev = dev->gdma_dev; > > > - struct gdma_context *gc; > > > + struct gdma_context *gc = mdev_to_gc(dev); > > > > > > - gc = mdev->gdma_context; > > > ibdev_dbg(&dev->ib_dev, "destroy dma region 0x%llx\n", > > > gdma_region); > > > > > > return mana_gd_destroy_dma_region(gc, gdma_region); @@ -447,7 > > > +435,7 @@ int mana_ib_mmap(struct ib_ucontext *ibcontext, struct > > vm_area_struct *vma) > > > int ret; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > if (vma->vm_pgoff != 0) { > > > ibdev_dbg(ibdev, "Unexpected vm_pgoff %lu\n", > > > vma->vm_pgoff); @@ -531,7 +519,7 @@ int > > mana_ib_gd_query_adapter_caps(struct mana_ib_dev *dev) > > > req.hdr.resp.msg_version = GDMA_MESSAGE_V3; > > > req.hdr.dev_id = dev->gdma_dev->dev_id; > > > > > > - err = mana_gd_send_request(dev->gdma_dev->gdma_context, sizeof(req), > > > + err = mana_gd_send_request(mdev_to_gc(dev), sizeof(req), > > > &req, sizeof(resp), &resp); > > > > > > if (err) { > > > diff --git a/drivers/infiniband/hw/mana/mana_ib.h > > > b/drivers/infiniband/hw/mana/mana_ib.h > > > index 6bdc0f549..6b15b2ab5 100644 > > > --- a/drivers/infiniband/hw/mana/mana_ib.h > > > +++ b/drivers/infiniband/hw/mana/mana_ib.h > > > @@ -142,6 +142,22 @@ struct mana_ib_query_adapter_caps_resp { > > > u32 max_inline_data_size; > > > }; /* HW Data */ > > > > > > +static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev > > > +*mdev) { > > > + return mdev->gdma_dev->gdma_context; } > > > + > > > +static inline struct net_device *mana_ib_get_netdev(struct ib_device > > > +*ibdev, u32 port) { > > > + struct mana_ib_dev *mdev = container_of(ibdev, struct mana_ib_dev, > > ib_dev); > > > + struct gdma_context *gc = mdev_to_gc(mdev); > > > + struct mana_context *mc = gc->mana.driver_data; > > > + > > > + if (port < 1 || port > mc->num_ports) > > > + return NULL; > > > + return mc->ports[port - 1]; > > > +} > > > + > > > int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem > > *umem, > > > mana_handle_t *gdma_region); > > > > > > @@ -188,6 +204,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > > ib_cq_init_attr *attr, > > > struct ib_udata *udata); > > > > > > int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); > > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > > +*cq); > > > > > > int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > > int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > > diff --git a/drivers/infiniband/hw/mana/mr.c > > > b/drivers/infiniband/hw/mana/mr.c index 351207c60..ee4d4f834 100644 > > > --- a/drivers/infiniband/hw/mana/mr.c > > > +++ b/drivers/infiniband/hw/mana/mr.c > > > @@ -30,12 +30,9 @@ static int mana_ib_gd_create_mr(struct mana_ib_dev > > > *dev, struct mana_ib_mr *mr, { > > > struct gdma_create_mr_response resp = {}; > > > struct gdma_create_mr_request req = {}; > > > - struct gdma_dev *mdev = dev->gdma_dev; > > > - struct gdma_context *gc; > > > + struct gdma_context *gc = mdev_to_gc(dev); > > > int err; > > > > > > - gc = mdev->gdma_context; > > > - > > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_MR, sizeof(req), > > > sizeof(resp)); > > > req.pd_handle = mr_params->pd_handle; @@ -77,12 +74,9 @@ static > > > int mana_ib_gd_destroy_mr(struct mana_ib_dev *dev, u64 mr_handle) { > > > struct gdma_destroy_mr_response resp = {}; > > > struct gdma_destroy_mr_request req = {}; > > > - struct gdma_dev *mdev = dev->gdma_dev; > > > - struct gdma_context *gc; > > > + struct gdma_context *gc = mdev_to_gc(dev); > > > int err; > > > > > > - gc = mdev->gdma_context; > > > - > > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_MR, sizeof(req), > > > sizeof(resp)); > > > > > > @@ -164,8 +158,7 @@ struct ib_mr *mana_ib_reg_user_mr(struct ib_pd > > *ibpd, u64 start, u64 length, > > > return &mr->ibmr; > > > > > > err_dma_region: > > > - mana_gd_destroy_dma_region(dev->gdma_dev->gdma_context, > > > - dma_region_handle); > > > + mana_gd_destroy_dma_region(mdev_to_gc(dev), dma_region_handle); > > > > > > err_umem: > > > ib_umem_release(mr->umem); > > > diff --git a/drivers/infiniband/hw/mana/qp.c > > > b/drivers/infiniband/hw/mana/qp.c index e6d063d45..e889c798f 100644 > > > --- a/drivers/infiniband/hw/mana/qp.c > > > +++ b/drivers/infiniband/hw/mana/qp.c > > > @@ -17,12 +17,10 @@ static int mana_ib_cfg_vport_steering(struct > > mana_ib_dev *dev, > > > struct mana_cfg_rx_steer_resp resp = {}; > > > mana_handle_t *req_indir_tab; > > > struct gdma_context *gc; > > > - struct gdma_dev *mdev; > > > u32 req_buf_size; > > > int i, err; > > > > > > - gc = dev->gdma_dev->gdma_context; > > > - mdev = &gc->mana; > > > + gc = mdev_to_gc(dev); > > > > > > req_buf_size = > > > sizeof(*req) + sizeof(mana_handle_t) * > > > MANA_INDIRECT_TABLE_SIZE; @@ -39,7 +37,7 @@ static int > > mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, > > > req->rx_enable = 1; > > > req->update_default_rxobj = 1; > > > req->default_rxobj = default_rxobj; > > > - req->hdr.dev_id = mdev->dev_id; > > > + req->hdr.dev_id = gc->mana.dev_id; > > > > > > /* If there are more than 1 entries in indirection table, enable RSS */ > > > if (log_ind_tbl_size) > > > @@ -106,7 +104,6 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > > struct ib_pd *pd, > > > struct gdma_queue **gdma_cq_allocated; > > > mana_handle_t *mana_ind_table; > > > struct mana_port_context *mpc; > > > - struct gdma_queue *gdma_cq; > > > unsigned int ind_tbl_size; > > > struct net_device *ndev; > > > struct mana_ib_cq *cq; > > > @@ -231,19 +228,11 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > > struct ib_pd *pd, > > > mana_ind_table[i] = wq->rx_object; > > > > > > /* Create CQ table entry */ > > > - WARN_ON(gc->cq_table[cq->id]); > > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > > - if (!gdma_cq) { > > > - ret = -ENOMEM; > > > + ret = mana_ib_install_cq_cb(mdev, cq); > > > + if (!ret) > > > goto fail; > > > - } > > > - gdma_cq_allocated[i] = gdma_cq; > > > > > > - gdma_cq->cq.context = cq; > > > - gdma_cq->type = GDMA_CQ; > > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > > - gdma_cq->id = cq->id; > > > - gc->cq_table[cq->id] = gdma_cq; > > > + gdma_cq_allocated[i] = gc->cq_table[cq->id]; > > > } > > > resp.num_entries = i; > > > > > > @@ -409,18 +398,9 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, > > struct ib_pd *ibpd, > > > send_cq->id = cq_spec.queue_index; > > > > > > /* Create CQ table entry */ > > > - WARN_ON(gc->cq_table[send_cq->id]); > > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > > - if (!gdma_cq) { > > > - err = -ENOMEM; > > > + err = mana_ib_install_cq_cb(mdev, send_cq); > > > + if (err) > > > goto err_destroy_wq_obj; > > > - } > > > - > > > - gdma_cq->cq.context = send_cq; > > > - gdma_cq->type = GDMA_CQ; > > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > > - gdma_cq->id = send_cq->id; > > > - gc->cq_table[send_cq->id] = gdma_cq; > > > > > > ibdev_dbg(&mdev->ib_dev, > > > "ret %d qp->tx_object 0x%llx sq id %llu cq id %llu\n", > > > err, @@ -442,7 +422,7 @@ static int mana_ib_create_qp_raw(struct ib_qp > > > *ibqp, struct ib_pd *ibpd, > > > > > > err_release_gdma_cq: > > > kfree(gdma_cq); > > > - gd->gdma_context->cq_table[send_cq->id] = NULL; > > > + gc->cq_table[send_cq->id] = NULL; > > > > > > err_destroy_wq_obj: > > > mana_destroy_wq_obj(mpc, GDMA_SQ, qp->tx_object); > > > > > > base-commit: d24b923f1d696ddacb09f0f2d1b1f4f045cfe65e > > > prerequisite-patch-id: 1b5d35ba40b675d080bfbe6a0e73b0dd163f4a03 > > > -- > > > 2.43.0 > > > > > > > > > ________________________________________ > > From: Leon Romanovsky <leon@kernel.org> > > Sent: Thursday, January 11, 2024 12:14 PM > > To: Konstantin Taranov > > Cc: Konstantin Taranov; Long Li; jgg@ziepe.ca; linux-rdma@vger.kernel.org; linux- > > kernel@vger.kernel.org > > Subject: [EXTERNAL] Re: [PATCH next v2 1/1] RDMA/mana_ib: Introduce three > > helper functions to clean mana_ib code > > > > [You don't often get email from leon@kernel.org. Learn why this is important at > > https://aka.ms/LearnAboutSenderIdentification ] > > > > On Wed, Jan 10, 2024 at 06:14:34AM -0800, Konstantin Taranov wrote: > > > From: Konstantin Taranov <kotaranov@microsoft.com> > > > > > > This patch aims to address two issues in mana_ib: > > > 1) Unsafe and inconsistent access to gdma_dev and gdma_context > > > > And how is it safe now? What is unsafe here? > > > > > 2) Code repetitions > > > > > > As a rule of thumb, functions should not access gdma_dev directly > > > > > > Introduced functions: > > > 1) mdev_to_gc > > > > Which is exactly "mdev->gdma_dev->gdma_context" as before. > > > > > 2) mana_ib_get_netdev > > > 3) mana_ib_install_cq_cb > > > > > > > > > > We are in merge window and cleanup patch will need to wait till it ends. > > > > Thanks > > > > > Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com> > > > --- > > > Sorry that was sent again, I forgot to add RDMA/mana_ib to the subject > > > --- > > > drivers/infiniband/hw/mana/cq.c | 23 ++++++++++++++-- > > > drivers/infiniband/hw/mana/main.c | 40 ++++++++++------------------ > > > drivers/infiniband/hw/mana/mana_ib.h | 17 ++++++++++++ > > > drivers/infiniband/hw/mana/mr.c | 13 +++------ > > > drivers/infiniband/hw/mana/qp.c | 36 ++++++------------------- > > > 5 files changed, 63 insertions(+), 66 deletions(-) > > > > > > diff --git a/drivers/infiniband/hw/mana/cq.c > > > b/drivers/infiniband/hw/mana/cq.c index 83ebd0705..255e74ab7 100644 > > > --- a/drivers/infiniband/hw/mana/cq.c > > > +++ b/drivers/infiniband/hw/mana/cq.c > > > @@ -16,7 +16,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > > ib_cq_init_attr *attr, > > > int err; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > if (udata->inlen < sizeof(ucmd)) > > > return -EINVAL; > > > @@ -81,7 +81,7 @@ int mana_ib_destroy_cq(struct ib_cq *ibcq, struct > > ib_udata *udata) > > > int err; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > err = mana_ib_gd_destroy_dma_region(mdev, cq->gdma_region); > > > if (err) { > > > @@ -107,3 +107,22 @@ void mana_ib_cq_handler(void *ctx, struct > > gdma_queue *gdma_cq) > > > if (cq->ibcq.comp_handler) > > > cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); > > > } > > > + > > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > > +*cq) { > > > + struct gdma_context *gc = mdev_to_gc(mdev); > > > + struct gdma_queue *gdma_cq; > > > + > > > + /* Create CQ table entry */ > > > + WARN_ON(gc->cq_table[cq->id]); > > > + gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > > + if (!gdma_cq) > > > + return -ENOMEM; > > > + > > > + gdma_cq->cq.context = cq; > > > + gdma_cq->type = GDMA_CQ; > > > + gdma_cq->cq.callback = mana_ib_cq_handler; > > > + gdma_cq->id = cq->id; > > > + gc->cq_table[cq->id] = gdma_cq; > > > + return 0; > > > +} > > > diff --git a/drivers/infiniband/hw/mana/main.c > > > b/drivers/infiniband/hw/mana/main.c > > > index faca09245..29dd2438d 100644 > > > --- a/drivers/infiniband/hw/mana/main.c > > > +++ b/drivers/infiniband/hw/mana/main.c > > > @@ -8,13 +8,10 @@ > > > void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd, > > > u32 port) > > > { > > > - struct gdma_dev *gd = &dev->gdma_dev->gdma_context->mana; > > > struct mana_port_context *mpc; > > > struct net_device *ndev; > > > - struct mana_context *mc; > > > > > > - mc = gd->driver_data; > > > - ndev = mc->ports[port]; > > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > > mpc = netdev_priv(ndev); > > > > > > mutex_lock(&pd->vport_mutex); > > > @@ -31,14 +28,11 @@ void mana_ib_uncfg_vport(struct mana_ib_dev *dev, > > > struct mana_ib_pd *pd, int mana_ib_cfg_vport(struct mana_ib_dev *dev, u32 > > port, struct mana_ib_pd *pd, > > > u32 doorbell_id) > > > { > > > - struct gdma_dev *mdev = &dev->gdma_dev->gdma_context->mana; > > > struct mana_port_context *mpc; > > > - struct mana_context *mc; > > > struct net_device *ndev; > > > int err; > > > > > > - mc = mdev->driver_data; > > > - ndev = mc->ports[port]; > > > + ndev = mana_ib_get_netdev(&dev->ib_dev, port); > > > mpc = netdev_priv(ndev); > > > > > > mutex_lock(&pd->vport_mutex); > > > @@ -79,17 +73,17 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct > > ib_udata *udata) > > > struct gdma_create_pd_req req = {}; > > > enum gdma_pd_flags flags = 0; > > > struct mana_ib_dev *dev; > > > - struct gdma_dev *mdev; > > > + struct gdma_context *gc; > > > int err; > > > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - mdev = dev->gdma_dev; > > > + gc = mdev_to_gc(dev); > > > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_PD, sizeof(req), > > > sizeof(resp)); > > > > > > req.flags = flags; > > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > > sizeof(resp), &resp); > > > > > > if (err || resp.hdr.status) { > > > @@ -119,17 +113,17 @@ int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct > > ib_udata *udata) > > > struct gdma_destory_pd_resp resp = {}; > > > struct gdma_destroy_pd_req req = {}; > > > struct mana_ib_dev *dev; > > > - struct gdma_dev *mdev; > > > + struct gdma_context *gc; > > > int err; > > > > > > dev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - mdev = dev->gdma_dev; > > > + gc = mdev_to_gc(dev); > > > > > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_PD, sizeof(req), > > > sizeof(resp)); > > > > > > req.pd_handle = pd->pd_handle; > > > - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, > > > + err = mana_gd_send_request(gc, sizeof(req), &req, > > > sizeof(resp), &resp); > > > > > > if (err || resp.hdr.status) { > > > @@ -206,13 +200,11 @@ int mana_ib_alloc_ucontext(struct ib_ucontext > > *ibcontext, > > > struct ib_device *ibdev = ibcontext->device; > > > struct mana_ib_dev *mdev; > > > struct gdma_context *gc; > > > - struct gdma_dev *dev; > > > int doorbell_page; > > > int ret; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - dev = mdev->gdma_dev; > > > - gc = dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > /* Allocate a doorbell page index */ > > > ret = mana_gd_allocate_doorbell_page(gc, &doorbell_page); @@ > > > -238,7 +230,7 @@ void mana_ib_dealloc_ucontext(struct ib_ucontext > > *ibcontext) > > > int ret; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > ret = mana_gd_destroy_doorbell_page(gc, mana_ucontext->doorbell); > > > if (ret) > > > @@ -322,15 +314,13 @@ int mana_ib_gd_create_dma_region(struct > > mana_ib_dev *dev, struct ib_umem *umem, > > > size_t max_pgs_create_cmd; > > > struct gdma_context *gc; > > > size_t num_pages_total; > > > - struct gdma_dev *mdev; > > > unsigned long page_sz; > > > unsigned int tail = 0; > > > u64 *page_addr_list; > > > void *request_buf; > > > int err; > > > > > > - mdev = dev->gdma_dev; > > > - gc = mdev->gdma_context; > > > + gc = mdev_to_gc(dev); > > > hwc = gc->hwc.driver_data; > > > > > > /* Hardware requires dma region to align to chosen page size */ > > > @@ -426,10 +416,8 @@ int mana_ib_gd_create_dma_region(struct > > > mana_ib_dev *dev, struct ib_umem *umem, > > > > > > int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev, u64 > > > gdma_region) { > > > - struct gdma_dev *mdev = dev->gdma_dev; > > > - struct gdma_context *gc; > > > + struct gdma_context *gc = mdev_to_gc(dev); > > > > > > - gc = mdev->gdma_context; > > > ibdev_dbg(&dev->ib_dev, "destroy dma region 0x%llx\n", > > > gdma_region); > > > > > > return mana_gd_destroy_dma_region(gc, gdma_region); @@ -447,7 > > > +435,7 @@ int mana_ib_mmap(struct ib_ucontext *ibcontext, struct > > vm_area_struct *vma) > > > int ret; > > > > > > mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); > > > - gc = mdev->gdma_dev->gdma_context; > > > + gc = mdev_to_gc(mdev); > > > > > > if (vma->vm_pgoff != 0) { > > > ibdev_dbg(ibdev, "Unexpected vm_pgoff %lu\n", > > > vma->vm_pgoff); @@ -531,7 +519,7 @@ int > > mana_ib_gd_query_adapter_caps(struct mana_ib_dev *dev) > > > req.hdr.resp.msg_version = GDMA_MESSAGE_V3; > > > req.hdr.dev_id = dev->gdma_dev->dev_id; > > > > > > - err = mana_gd_send_request(dev->gdma_dev->gdma_context, sizeof(req), > > > + err = mana_gd_send_request(mdev_to_gc(dev), sizeof(req), > > > &req, sizeof(resp), &resp); > > > > > > if (err) { > > > diff --git a/drivers/infiniband/hw/mana/mana_ib.h > > > b/drivers/infiniband/hw/mana/mana_ib.h > > > index 6bdc0f549..6b15b2ab5 100644 > > > --- a/drivers/infiniband/hw/mana/mana_ib.h > > > +++ b/drivers/infiniband/hw/mana/mana_ib.h > > > @@ -142,6 +142,22 @@ struct mana_ib_query_adapter_caps_resp { > > > u32 max_inline_data_size; > > > }; /* HW Data */ > > > > > > +static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev > > > +*mdev) { > > > + return mdev->gdma_dev->gdma_context; } > > > + > > > +static inline struct net_device *mana_ib_get_netdev(struct ib_device > > > +*ibdev, u32 port) { > > > + struct mana_ib_dev *mdev = container_of(ibdev, struct mana_ib_dev, > > ib_dev); > > > + struct gdma_context *gc = mdev_to_gc(mdev); > > > + struct mana_context *mc = gc->mana.driver_data; > > > + > > > + if (port < 1 || port > mc->num_ports) > > > + return NULL; > > > + return mc->ports[port - 1]; > > > +} > > > + > > > int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem > > *umem, > > > mana_handle_t *gdma_region); > > > > > > @@ -188,6 +204,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct > > ib_cq_init_attr *attr, > > > struct ib_udata *udata); > > > > > > int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); > > > +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq > > > +*cq); > > > > > > int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > > int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); > > > diff --git a/drivers/infiniband/hw/mana/mr.c > > > b/drivers/infiniband/hw/mana/mr.c index 351207c60..ee4d4f834 100644 > > > --- a/drivers/infiniband/hw/mana/mr.c > > > +++ b/drivers/infiniband/hw/mana/mr.c > > > @@ -30,12 +30,9 @@ static int mana_ib_gd_create_mr(struct mana_ib_dev > > > *dev, struct mana_ib_mr *mr, { > > > struct gdma_create_mr_response resp = {}; > > > struct gdma_create_mr_request req = {}; > > > - struct gdma_dev *mdev = dev->gdma_dev; > > > - struct gdma_context *gc; > > > + struct gdma_context *gc = mdev_to_gc(dev); > > > int err; > > > > > > - gc = mdev->gdma_context; > > > - > > > mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_MR, sizeof(req), > > > sizeof(resp)); > > > req.pd_handle = mr_params->pd_handle; @@ -77,12 +74,9 @@ static > > > int mana_ib_gd_destroy_mr(struct mana_ib_dev *dev, u64 mr_handle) { > > > struct gdma_destroy_mr_response resp = {}; > > > struct gdma_destroy_mr_request req = {}; > > > - struct gdma_dev *mdev = dev->gdma_dev; > > > - struct gdma_context *gc; > > > + struct gdma_context *gc = mdev_to_gc(dev); > > > int err; > > > > > > - gc = mdev->gdma_context; > > > - > > > mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_MR, sizeof(req), > > > sizeof(resp)); > > > > > > @@ -164,8 +158,7 @@ struct ib_mr *mana_ib_reg_user_mr(struct ib_pd > > *ibpd, u64 start, u64 length, > > > return &mr->ibmr; > > > > > > err_dma_region: > > > - mana_gd_destroy_dma_region(dev->gdma_dev->gdma_context, > > > - dma_region_handle); > > > + mana_gd_destroy_dma_region(mdev_to_gc(dev), dma_region_handle); > > > > > > err_umem: > > > ib_umem_release(mr->umem); > > > diff --git a/drivers/infiniband/hw/mana/qp.c > > > b/drivers/infiniband/hw/mana/qp.c index e6d063d45..e889c798f 100644 > > > --- a/drivers/infiniband/hw/mana/qp.c > > > +++ b/drivers/infiniband/hw/mana/qp.c > > > @@ -17,12 +17,10 @@ static int mana_ib_cfg_vport_steering(struct > > mana_ib_dev *dev, > > > struct mana_cfg_rx_steer_resp resp = {}; > > > mana_handle_t *req_indir_tab; > > > struct gdma_context *gc; > > > - struct gdma_dev *mdev; > > > u32 req_buf_size; > > > int i, err; > > > > > > - gc = dev->gdma_dev->gdma_context; > > > - mdev = &gc->mana; > > > + gc = mdev_to_gc(dev); > > > > > > req_buf_size = > > > sizeof(*req) + sizeof(mana_handle_t) * > > > MANA_INDIRECT_TABLE_SIZE; @@ -39,7 +37,7 @@ static int > > mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, > > > req->rx_enable = 1; > > > req->update_default_rxobj = 1; > > > req->default_rxobj = default_rxobj; > > > - req->hdr.dev_id = mdev->dev_id; > > > + req->hdr.dev_id = gc->mana.dev_id; > > > > > > /* If there are more than 1 entries in indirection table, enable RSS */ > > > if (log_ind_tbl_size) > > > @@ -106,7 +104,6 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > > struct ib_pd *pd, > > > struct gdma_queue **gdma_cq_allocated; > > > mana_handle_t *mana_ind_table; > > > struct mana_port_context *mpc; > > > - struct gdma_queue *gdma_cq; > > > unsigned int ind_tbl_size; > > > struct net_device *ndev; > > > struct mana_ib_cq *cq; > > > @@ -231,19 +228,11 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, > > struct ib_pd *pd, > > > mana_ind_table[i] = wq->rx_object; > > > > > > /* Create CQ table entry */ > > > - WARN_ON(gc->cq_table[cq->id]); > > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > > - if (!gdma_cq) { > > > - ret = -ENOMEM; > > > + ret = mana_ib_install_cq_cb(mdev, cq); > > > + if (!ret) > > > goto fail; > > > - } > > > - gdma_cq_allocated[i] = gdma_cq; > > > > > > - gdma_cq->cq.context = cq; > > > - gdma_cq->type = GDMA_CQ; > > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > > - gdma_cq->id = cq->id; > > > - gc->cq_table[cq->id] = gdma_cq; > > > + gdma_cq_allocated[i] = gc->cq_table[cq->id]; > > > } > > > resp.num_entries = i; > > > > > > @@ -409,18 +398,9 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, > > struct ib_pd *ibpd, > > > send_cq->id = cq_spec.queue_index; > > > > > > /* Create CQ table entry */ > > > - WARN_ON(gc->cq_table[send_cq->id]); > > > - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); > > > - if (!gdma_cq) { > > > - err = -ENOMEM; > > > + err = mana_ib_install_cq_cb(mdev, send_cq); > > > + if (err) > > > goto err_destroy_wq_obj; > > > - } > > > - > > > - gdma_cq->cq.context = send_cq; > > > - gdma_cq->type = GDMA_CQ; > > > - gdma_cq->cq.callback = mana_ib_cq_handler; > > > - gdma_cq->id = send_cq->id; > > > - gc->cq_table[send_cq->id] = gdma_cq; > > > > > > ibdev_dbg(&mdev->ib_dev, > > > "ret %d qp->tx_object 0x%llx sq id %llu cq id %llu\n", > > > err, @@ -442,7 +422,7 @@ static int mana_ib_create_qp_raw(struct ib_qp > > > *ibqp, struct ib_pd *ibpd, > > > > > > err_release_gdma_cq: > > > kfree(gdma_cq); > > > - gd->gdma_context->cq_table[send_cq->id] = NULL; > > > + gc->cq_table[send_cq->id] = NULL; > > > > > > err_destroy_wq_obj: > > > mana_destroy_wq_obj(mpc, GDMA_SQ, qp->tx_object); > > > > > > base-commit: d24b923f1d696ddacb09f0f2d1b1f4f045cfe65e > > > prerequisite-patch-id: 1b5d35ba40b675d080bfbe6a0e73b0dd163f4a03 > > > -- > > > 2.43.0 > > >
diff --git a/drivers/infiniband/hw/mana/cq.c b/drivers/infiniband/hw/mana/cq.c index 83ebd0705..255e74ab7 100644 --- a/drivers/infiniband/hw/mana/cq.c +++ b/drivers/infiniband/hw/mana/cq.c @@ -16,7 +16,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, int err; mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); - gc = mdev->gdma_dev->gdma_context; + gc = mdev_to_gc(mdev); if (udata->inlen < sizeof(ucmd)) return -EINVAL; @@ -81,7 +81,7 @@ int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata) int err; mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); - gc = mdev->gdma_dev->gdma_context; + gc = mdev_to_gc(mdev); err = mana_ib_gd_destroy_dma_region(mdev, cq->gdma_region); if (err) { @@ -107,3 +107,22 @@ void mana_ib_cq_handler(void *ctx, struct gdma_queue *gdma_cq) if (cq->ibcq.comp_handler) cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context); } + +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq) +{ + struct gdma_context *gc = mdev_to_gc(mdev); + struct gdma_queue *gdma_cq; + + /* Create CQ table entry */ + WARN_ON(gc->cq_table[cq->id]); + gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); + if (!gdma_cq) + return -ENOMEM; + + gdma_cq->cq.context = cq; + gdma_cq->type = GDMA_CQ; + gdma_cq->cq.callback = mana_ib_cq_handler; + gdma_cq->id = cq->id; + gc->cq_table[cq->id] = gdma_cq; + return 0; +} diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c index faca09245..29dd2438d 100644 --- a/drivers/infiniband/hw/mana/main.c +++ b/drivers/infiniband/hw/mana/main.c @@ -8,13 +8,10 @@ void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd, u32 port) { - struct gdma_dev *gd = &dev->gdma_dev->gdma_context->mana; struct mana_port_context *mpc; struct net_device *ndev; - struct mana_context *mc; - mc = gd->driver_data; - ndev = mc->ports[port]; + ndev = mana_ib_get_netdev(&dev->ib_dev, port); mpc = netdev_priv(ndev); mutex_lock(&pd->vport_mutex); @@ -31,14 +28,11 @@ void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd, int mana_ib_cfg_vport(struct mana_ib_dev *dev, u32 port, struct mana_ib_pd *pd, u32 doorbell_id) { - struct gdma_dev *mdev = &dev->gdma_dev->gdma_context->mana; struct mana_port_context *mpc; - struct mana_context *mc; struct net_device *ndev; int err; - mc = mdev->driver_data; - ndev = mc->ports[port]; + ndev = mana_ib_get_netdev(&dev->ib_dev, port); mpc = netdev_priv(ndev); mutex_lock(&pd->vport_mutex); @@ -79,17 +73,17 @@ int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) struct gdma_create_pd_req req = {}; enum gdma_pd_flags flags = 0; struct mana_ib_dev *dev; - struct gdma_dev *mdev; + struct gdma_context *gc; int err; dev = container_of(ibdev, struct mana_ib_dev, ib_dev); - mdev = dev->gdma_dev; + gc = mdev_to_gc(dev); mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_PD, sizeof(req), sizeof(resp)); req.flags = flags; - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, + err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp); if (err || resp.hdr.status) { @@ -119,17 +113,17 @@ int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata) struct gdma_destory_pd_resp resp = {}; struct gdma_destroy_pd_req req = {}; struct mana_ib_dev *dev; - struct gdma_dev *mdev; + struct gdma_context *gc; int err; dev = container_of(ibdev, struct mana_ib_dev, ib_dev); - mdev = dev->gdma_dev; + gc = mdev_to_gc(dev); mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_PD, sizeof(req), sizeof(resp)); req.pd_handle = pd->pd_handle; - err = mana_gd_send_request(mdev->gdma_context, sizeof(req), &req, + err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp); if (err || resp.hdr.status) { @@ -206,13 +200,11 @@ int mana_ib_alloc_ucontext(struct ib_ucontext *ibcontext, struct ib_device *ibdev = ibcontext->device; struct mana_ib_dev *mdev; struct gdma_context *gc; - struct gdma_dev *dev; int doorbell_page; int ret; mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); - dev = mdev->gdma_dev; - gc = dev->gdma_context; + gc = mdev_to_gc(mdev); /* Allocate a doorbell page index */ ret = mana_gd_allocate_doorbell_page(gc, &doorbell_page); @@ -238,7 +230,7 @@ void mana_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) int ret; mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); - gc = mdev->gdma_dev->gdma_context; + gc = mdev_to_gc(mdev); ret = mana_gd_destroy_doorbell_page(gc, mana_ucontext->doorbell); if (ret) @@ -322,15 +314,13 @@ int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, size_t max_pgs_create_cmd; struct gdma_context *gc; size_t num_pages_total; - struct gdma_dev *mdev; unsigned long page_sz; unsigned int tail = 0; u64 *page_addr_list; void *request_buf; int err; - mdev = dev->gdma_dev; - gc = mdev->gdma_context; + gc = mdev_to_gc(dev); hwc = gc->hwc.driver_data; /* Hardware requires dma region to align to chosen page size */ @@ -426,10 +416,8 @@ int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, int mana_ib_gd_destroy_dma_region(struct mana_ib_dev *dev, u64 gdma_region) { - struct gdma_dev *mdev = dev->gdma_dev; - struct gdma_context *gc; + struct gdma_context *gc = mdev_to_gc(dev); - gc = mdev->gdma_context; ibdev_dbg(&dev->ib_dev, "destroy dma region 0x%llx\n", gdma_region); return mana_gd_destroy_dma_region(gc, gdma_region); @@ -447,7 +435,7 @@ int mana_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma) int ret; mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); - gc = mdev->gdma_dev->gdma_context; + gc = mdev_to_gc(mdev); if (vma->vm_pgoff != 0) { ibdev_dbg(ibdev, "Unexpected vm_pgoff %lu\n", vma->vm_pgoff); @@ -531,7 +519,7 @@ int mana_ib_gd_query_adapter_caps(struct mana_ib_dev *dev) req.hdr.resp.msg_version = GDMA_MESSAGE_V3; req.hdr.dev_id = dev->gdma_dev->dev_id; - err = mana_gd_send_request(dev->gdma_dev->gdma_context, sizeof(req), + err = mana_gd_send_request(mdev_to_gc(dev), sizeof(req), &req, sizeof(resp), &resp); if (err) { diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h index 6bdc0f549..6b15b2ab5 100644 --- a/drivers/infiniband/hw/mana/mana_ib.h +++ b/drivers/infiniband/hw/mana/mana_ib.h @@ -142,6 +142,22 @@ struct mana_ib_query_adapter_caps_resp { u32 max_inline_data_size; }; /* HW Data */ +static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev *mdev) +{ + return mdev->gdma_dev->gdma_context; +} + +static inline struct net_device *mana_ib_get_netdev(struct ib_device *ibdev, u32 port) +{ + struct mana_ib_dev *mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); + struct gdma_context *gc = mdev_to_gc(mdev); + struct mana_context *mc = gc->mana.driver_data; + + if (port < 1 || port > mc->num_ports) + return NULL; + return mc->ports[port - 1]; +} + int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem, mana_handle_t *gdma_region); @@ -188,6 +204,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, struct ib_udata *udata); int mana_ib_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata); +int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq); int mana_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); int mana_ib_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata); diff --git a/drivers/infiniband/hw/mana/mr.c b/drivers/infiniband/hw/mana/mr.c index 351207c60..ee4d4f834 100644 --- a/drivers/infiniband/hw/mana/mr.c +++ b/drivers/infiniband/hw/mana/mr.c @@ -30,12 +30,9 @@ static int mana_ib_gd_create_mr(struct mana_ib_dev *dev, struct mana_ib_mr *mr, { struct gdma_create_mr_response resp = {}; struct gdma_create_mr_request req = {}; - struct gdma_dev *mdev = dev->gdma_dev; - struct gdma_context *gc; + struct gdma_context *gc = mdev_to_gc(dev); int err; - gc = mdev->gdma_context; - mana_gd_init_req_hdr(&req.hdr, GDMA_CREATE_MR, sizeof(req), sizeof(resp)); req.pd_handle = mr_params->pd_handle; @@ -77,12 +74,9 @@ static int mana_ib_gd_destroy_mr(struct mana_ib_dev *dev, u64 mr_handle) { struct gdma_destroy_mr_response resp = {}; struct gdma_destroy_mr_request req = {}; - struct gdma_dev *mdev = dev->gdma_dev; - struct gdma_context *gc; + struct gdma_context *gc = mdev_to_gc(dev); int err; - gc = mdev->gdma_context; - mana_gd_init_req_hdr(&req.hdr, GDMA_DESTROY_MR, sizeof(req), sizeof(resp)); @@ -164,8 +158,7 @@ struct ib_mr *mana_ib_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 length, return &mr->ibmr; err_dma_region: - mana_gd_destroy_dma_region(dev->gdma_dev->gdma_context, - dma_region_handle); + mana_gd_destroy_dma_region(mdev_to_gc(dev), dma_region_handle); err_umem: ib_umem_release(mr->umem); diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c index e6d063d45..e889c798f 100644 --- a/drivers/infiniband/hw/mana/qp.c +++ b/drivers/infiniband/hw/mana/qp.c @@ -17,12 +17,10 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, struct mana_cfg_rx_steer_resp resp = {}; mana_handle_t *req_indir_tab; struct gdma_context *gc; - struct gdma_dev *mdev; u32 req_buf_size; int i, err; - gc = dev->gdma_dev->gdma_context; - mdev = &gc->mana; + gc = mdev_to_gc(dev); req_buf_size = sizeof(*req) + sizeof(mana_handle_t) * MANA_INDIRECT_TABLE_SIZE; @@ -39,7 +37,7 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev, req->rx_enable = 1; req->update_default_rxobj = 1; req->default_rxobj = default_rxobj; - req->hdr.dev_id = mdev->dev_id; + req->hdr.dev_id = gc->mana.dev_id; /* If there are more than 1 entries in indirection table, enable RSS */ if (log_ind_tbl_size) @@ -106,7 +104,6 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd, struct gdma_queue **gdma_cq_allocated; mana_handle_t *mana_ind_table; struct mana_port_context *mpc; - struct gdma_queue *gdma_cq; unsigned int ind_tbl_size; struct net_device *ndev; struct mana_ib_cq *cq; @@ -231,19 +228,11 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd, mana_ind_table[i] = wq->rx_object; /* Create CQ table entry */ - WARN_ON(gc->cq_table[cq->id]); - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); - if (!gdma_cq) { - ret = -ENOMEM; + ret = mana_ib_install_cq_cb(mdev, cq); + if (!ret) goto fail; - } - gdma_cq_allocated[i] = gdma_cq; - gdma_cq->cq.context = cq; - gdma_cq->type = GDMA_CQ; - gdma_cq->cq.callback = mana_ib_cq_handler; - gdma_cq->id = cq->id; - gc->cq_table[cq->id] = gdma_cq; + gdma_cq_allocated[i] = gc->cq_table[cq->id]; } resp.num_entries = i; @@ -409,18 +398,9 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd, send_cq->id = cq_spec.queue_index; /* Create CQ table entry */ - WARN_ON(gc->cq_table[send_cq->id]); - gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL); - if (!gdma_cq) { - err = -ENOMEM; + err = mana_ib_install_cq_cb(mdev, send_cq); + if (err) goto err_destroy_wq_obj; - } - - gdma_cq->cq.context = send_cq; - gdma_cq->type = GDMA_CQ; - gdma_cq->cq.callback = mana_ib_cq_handler; - gdma_cq->id = send_cq->id; - gc->cq_table[send_cq->id] = gdma_cq; ibdev_dbg(&mdev->ib_dev, "ret %d qp->tx_object 0x%llx sq id %llu cq id %llu\n", err, @@ -442,7 +422,7 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd, err_release_gdma_cq: kfree(gdma_cq); - gd->gdma_context->cq_table[send_cq->id] = NULL; + gc->cq_table[send_cq->id] = NULL; err_destroy_wq_obj: mana_destroy_wq_obj(mpc, GDMA_SQ, qp->tx_object);