From: Alexander Lobakin <alobakin@marvell.com>
To: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Cc: Alexander Lobakin <alobakin@marvell.com>,
Igor Russkikh <irusskikh@marvell.com>,
Michal Kalderon <michal.kalderon@marvell.com>,
"Ariel Elior" <aelior@marvell.com>,
Denis Bolotin <denis.bolotin@marvell.com>,
"Doug Ledford" <dledford@redhat.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
"Alexei Starovoitov" <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
"Jesper Dangaard Brouer" <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
"Yonghong Song" <yhs@fb.com>, Andrii Nakryiko <andriin@fb.com>,
KP Singh <kpsingh@chromium.org>,
<GR-everest-linux-l2@marvell.com>, <netdev@vger.kernel.org>,
<bpf@vger.kernel.org>, <linux-rdma@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH net-next 07/15] qed: simplify initialization of the chains with an external PBL
Date: Wed, 22 Jul 2020 18:53:41 +0300 [thread overview]
Message-ID: <20200722155349.747-8-alobakin@marvell.com> (raw)
In-Reply-To: <20200722155349.747-1-alobakin@marvell.com>
Fill PBL table parameters for chains with an external PBL data earlier on
qed_chain_init_params() rather than on allocation itself. This simplifies
allocation code and allows to extend struct ext_pbl for other chain types.
Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
---
drivers/net/ethernet/qlogic/qed/qed_chain.c | 37 +++++++++++----------
1 file changed, 19 insertions(+), 18 deletions(-)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_chain.c b/drivers/net/ethernet/qlogic/qed/qed_chain.c
index e2c5741ed160..2a61007442ae 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_chain.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_chain.c
@@ -9,7 +9,8 @@ static void qed_chain_init_params(struct qed_chain *chain,
u32 page_cnt, u8 elem_size,
enum qed_chain_use_mode intended_use,
enum qed_chain_mode mode,
- enum qed_chain_cnt_type cnt_type)
+ enum qed_chain_cnt_type cnt_type,
+ const struct qed_chain_ext_pbl *ext_pbl)
{
memset(chain, 0, sizeof(*chain));
@@ -29,6 +30,13 @@ static void qed_chain_init_params(struct qed_chain *chain,
chain->page_cnt = page_cnt;
chain->capacity = chain->usable_per_page * page_cnt;
chain->size = chain->elem_per_page * page_cnt;
+
+ if (ext_pbl && ext_pbl->p_pbl_virt) {
+ chain->pbl_sp.table_virt = ext_pbl->p_pbl_virt;
+ chain->pbl_sp.table_phys = ext_pbl->p_pbl_phys;
+
+ chain->b_external_pbl = true;
+ }
}
static void qed_chain_init_next_ptr_elem(const struct qed_chain *chain,
@@ -228,8 +236,7 @@ static int qed_chain_alloc_single(struct qed_dev *cdev,
return 0;
}
-static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain,
- struct qed_chain_ext_pbl *ext_pbl)
+static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain)
{
struct device *dev = &cdev->pdev->dev;
struct addr_tbl_entry *addr_tbl;
@@ -251,21 +258,14 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain,
chain->pbl.pp_addr_tbl = addr_tbl;
- if (ext_pbl) {
- size = 0;
- pbl_virt = ext_pbl->p_pbl_virt;
- pbl_phys = ext_pbl->p_pbl_phys;
+ if (chain->b_external_pbl)
+ goto alloc_pages;
- chain->b_external_pbl = true;
- } else {
- size = array_size(page_cnt, sizeof(*pbl_virt));
- if (unlikely(size == SIZE_MAX))
- return -EOVERFLOW;
-
- pbl_virt = dma_alloc_coherent(dev, size, &pbl_phys,
- GFP_KERNEL);
- }
+ size = array_size(page_cnt, sizeof(*pbl_virt));
+ if (unlikely(size == SIZE_MAX))
+ return -EOVERFLOW;
+ pbl_virt = dma_alloc_coherent(dev, size, &pbl_phys, GFP_KERNEL);
if (!pbl_virt)
return -ENOMEM;
@@ -273,6 +273,7 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *chain,
chain->pbl_sp.table_phys = pbl_phys;
chain->pbl_sp.table_size = size;
+alloc_pages:
for (i = 0; i < page_cnt; i++) {
virt = dma_alloc_coherent(dev, QED_CHAIN_PAGE_SIZE, &phys,
GFP_KERNEL);
@@ -323,7 +324,7 @@ int qed_chain_alloc(struct qed_dev *cdev,
}
qed_chain_init_params(chain, page_cnt, elem_size, intended_use, mode,
- cnt_type);
+ cnt_type, ext_pbl);
switch (mode) {
case QED_CHAIN_MODE_NEXT_PTR:
@@ -333,7 +334,7 @@ int qed_chain_alloc(struct qed_dev *cdev,
rc = qed_chain_alloc_single(cdev, chain);
break;
case QED_CHAIN_MODE_PBL:
- rc = qed_chain_alloc_pbl(cdev, chain, ext_pbl);
+ rc = qed_chain_alloc_pbl(cdev, chain);
break;
default:
return -EINVAL;
--
2.25.1
next prev parent reply other threads:[~2020-07-22 15:57 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-22 15:53 [PATCH net-next 00/15] qed/qede: improve chain API and add XDP_REDIRECT support Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 01/15] qed: reformat "qed_chain.h" a bit Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 02/15] qed: reformat Makefile Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 03/15] qed: move chain methods to a separate file Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 04/15] qed: prevent possible double-frees of the chains Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 05/15] qed: sanitize PBL chains allocation Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 06/15] qed: move chain initialization inlines next to allocation functions Alexander Lobakin
2020-07-22 15:53 ` Alexander Lobakin [this message]
2020-07-22 15:53 ` [PATCH net-next 08/15] qed: simplify chain allocation with init params struct Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 09/15] qed: add support for different page sizes for chains Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 10/15] qed: optimize common chain accessors Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 11/15] qed: introduce qed_chain_get_elem_used{,u32}() Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 12/15] qede: reformat several structures in "qede.h" Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 13/15] qede: reformat net_device_ops declarations Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 14/15] qede: refactor XDP Tx processing Alexander Lobakin
2020-07-22 15:53 ` [PATCH net-next 15/15] qede: add .ndo_xdp_xmit() and XDP_REDIRECT support Alexander Lobakin
2020-07-22 21:52 ` [PATCH net-next 03/15] qed: move chain methods to a separate file Alexander Lobakin
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