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 11/15] qed: introduce qed_chain_get_elem_used{,u32}()
Date: Wed, 22 Jul 2020 18:53:45 +0300 [thread overview]
Message-ID: <20200722155349.747-12-alobakin@marvell.com> (raw)
In-Reply-To: <20200722155349.747-1-alobakin@marvell.com>
Add reverse-variants of qed_chain_get_elem_left{,u32}() to be able to
know current chain occupation. They will be used in the upcoming qede
XDP_REDIRECT code.
They share most of the logics with the mentioned ones, so were reused
to collapse the latters.
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>
---
include/linux/qed/qed_chain.h | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/include/linux/qed/qed_chain.h b/include/linux/qed/qed_chain.h
index 434479e2ab65..4d58dc8943f0 100644
--- a/include/linux/qed/qed_chain.h
+++ b/include/linux/qed/qed_chain.h
@@ -203,7 +203,7 @@ static inline u32 qed_chain_get_cons_idx_u32(const struct qed_chain *chain)
return chain->u.chain32.cons_idx;
}
-static inline u16 qed_chain_get_elem_left(const struct qed_chain *chain)
+static inline u16 qed_chain_get_elem_used(const struct qed_chain *chain)
{
u32 prod = qed_chain_get_prod_idx(chain);
u32 cons = qed_chain_get_cons_idx(chain);
@@ -217,10 +217,15 @@ static inline u16 qed_chain_get_elem_left(const struct qed_chain *chain)
if (chain->mode == QED_CHAIN_MODE_NEXT_PTR)
used -= (u16)(prod / elem_per_page - cons / elem_per_page);
- return (u16)(chain->capacity - used);
+ return used;
}
-static inline u32 qed_chain_get_elem_left_u32(const struct qed_chain *chain)
+static inline u16 qed_chain_get_elem_left(const struct qed_chain *chain)
+{
+ return (u16)(chain->capacity - qed_chain_get_elem_used(chain));
+}
+
+static inline u32 qed_chain_get_elem_used_u32(const struct qed_chain *chain)
{
u64 prod = qed_chain_get_prod_idx_u32(chain);
u64 cons = qed_chain_get_cons_idx_u32(chain);
@@ -234,7 +239,12 @@ static inline u32 qed_chain_get_elem_left_u32(const struct qed_chain *chain)
if (chain->mode == QED_CHAIN_MODE_NEXT_PTR)
used -= (u32)(prod / elem_per_page - cons / elem_per_page);
- return chain->capacity - used;
+ return used;
+}
+
+static inline u32 qed_chain_get_elem_left_u32(const struct qed_chain *chain)
+{
+ return chain->capacity - qed_chain_get_elem_used_u32(chain);
}
static inline u16 qed_chain_get_usable_per_page(const struct qed_chain *chain)
--
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 ` [PATCH net-next 07/15] qed: simplify initialization of the chains with an external PBL Alexander Lobakin
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 ` Alexander Lobakin [this message]
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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