From: Mina Almasry <almasrymina@google.com>
To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, linux-alpha@vger.kernel.org,
linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org,
sparclinux@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org,
bpf@vger.kernel.org, linux-media@vger.kernel.org,
dri-devel@lists.freedesktop.org
Cc: "Mina Almasry" <almasrymina@google.com>,
"Donald Hunter" <donald.hunter@gmail.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Paolo Abeni" <pabeni@redhat.com>,
"Jonathan Corbet" <corbet@lwn.net>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Ivan Kokshaysky" <ink@jurassic.park.msu.ru>,
"Matt Turner" <mattst88@gmail.com>,
"Thomas Bogendoerfer" <tsbogend@alpha.franken.de>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
"Helge Deller" <deller@gmx.de>,
"Andreas Larsson" <andreas@gaisler.com>,
"Jesper Dangaard Brouer" <hawk@kernel.org>,
"Ilias Apalodimas" <ilias.apalodimas@linaro.org>,
"Steven Rostedt" <rostedt@goodmis.org>,
"Masami Hiramatsu" <mhiramat@kernel.org>,
"Mathieu Desnoyers" <mathieu.desnoyers@efficios.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Steffen Klassert" <steffen.klassert@secunet.com>,
"Herbert Xu" <herbert@gondor.apana.org.au>,
"David Ahern" <dsahern@kernel.org>,
"Willem de Bruijn" <willemdebruijn.kernel@gmail.com>,
"Shuah Khan" <shuah@kernel.org>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Christian König" <christian.koenig@amd.com>,
"Bagas Sanjaya" <bagasdotme@gmail.com>,
"Christoph Hellwig" <hch@infradead.org>,
"Nikolay Aleksandrov" <razor@blackwall.org>,
"Taehee Yoo" <ap420073@gmail.com>,
"Pavel Begunkov" <asml.silence@gmail.com>,
"David Wei" <dw@davidwei.uk>, "Jason Gunthorpe" <jgg@ziepe.ca>,
"Yunsheng Lin" <linyunsheng@huawei.com>,
"Shailend Chand" <shailend@google.com>,
"Harshitha Ramamurthy" <hramamurthy@google.com>,
"Shakeel Butt" <shakeel.butt@linux.dev>,
"Jeroen de Borst" <jeroendb@google.com>,
"Praveen Kaligineedi" <pkaligineedi@google.com>
Subject: [PATCH net-next v16 13/13] netdev: add dmabuf introspection
Date: Wed, 10 Jul 2024 00:17:46 +0000 [thread overview]
Message-ID: <20240710001749.1388631-14-almasrymina@google.com> (raw)
In-Reply-To: <20240710001749.1388631-1-almasrymina@google.com>
Add dmabuf information to page_pool stats:
$ ./cli.py --spec ../netlink/specs/netdev.yaml --dump page-pool-get
...
{'dmabuf': 10,
'id': 456,
'ifindex': 3,
'inflight': 1023,
'inflight-mem': 4190208},
{'dmabuf': 10,
'id': 455,
'ifindex': 3,
'inflight': 1023,
'inflight-mem': 4190208},
{'dmabuf': 10,
'id': 454,
'ifindex': 3,
'inflight': 1023,
'inflight-mem': 4190208},
{'dmabuf': 10,
'id': 453,
'ifindex': 3,
'inflight': 1023,
'inflight-mem': 4190208},
{'dmabuf': 10,
'id': 452,
'ifindex': 3,
'inflight': 1023,
'inflight-mem': 4190208},
{'dmabuf': 10,
'id': 451,
'ifindex': 3,
'inflight': 1023,
'inflight-mem': 4190208},
{'dmabuf': 10,
'id': 450,
'ifindex': 3,
'inflight': 1023,
'inflight-mem': 4190208},
{'dmabuf': 10,
'id': 449,
'ifindex': 3,
'inflight': 1023,
'inflight-mem': 4190208},
And queue stats:
$ ./cli.py --spec ../netlink/specs/netdev.yaml --dump queue-get
...
{'dmabuf': 10, 'id': 8, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 9, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 10, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 11, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 12, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 13, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 14, 'ifindex': 3, 'type': 'rx'},
{'dmabuf': 10, 'id': 15, 'ifindex': 3, 'type': 'rx'},
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Mina Almasry <almasrymina@google.com>
---
Documentation/netlink/specs/netdev.yaml | 10 ++++++++++
include/uapi/linux/netdev.h | 2 ++
net/core/netdev-genl.c | 10 ++++++++++
net/core/page_pool_user.c | 4 ++++
tools/include/uapi/linux/netdev.h | 2 ++
5 files changed, 28 insertions(+)
diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml
index 0c747530c275e..08412c279297b 100644
--- a/Documentation/netlink/specs/netdev.yaml
+++ b/Documentation/netlink/specs/netdev.yaml
@@ -167,6 +167,10 @@ attribute-sets:
"re-attached", they are just waiting to disappear.
Attribute is absent if Page Pool has not been detached, and
can still be used to allocate new memory.
+ -
+ name: dmabuf
+ doc: ID of the dmabuf this page-pool is attached to.
+ type: u32
-
name: page-pool-info
subset-of: page-pool
@@ -268,6 +272,10 @@ attribute-sets:
name: napi-id
doc: ID of the NAPI instance which services this queue.
type: u32
+ -
+ name: dmabuf
+ doc: ID of the dmabuf attached to this queue, if any.
+ type: u32
-
name: qstats
@@ -543,6 +551,7 @@ operations:
- inflight
- inflight-mem
- detach-time
+ - dmabuf
dump:
reply: *pp-reply
config-cond: page-pool
@@ -607,6 +616,7 @@ operations:
- type
- napi-id
- ifindex
+ - dmabuf
dump:
request:
attributes:
diff --git a/include/uapi/linux/netdev.h b/include/uapi/linux/netdev.h
index 91bf3ecc5f1d9..7c308f04e7a06 100644
--- a/include/uapi/linux/netdev.h
+++ b/include/uapi/linux/netdev.h
@@ -93,6 +93,7 @@ enum {
NETDEV_A_PAGE_POOL_INFLIGHT,
NETDEV_A_PAGE_POOL_INFLIGHT_MEM,
NETDEV_A_PAGE_POOL_DETACH_TIME,
+ NETDEV_A_PAGE_POOL_DMABUF,
__NETDEV_A_PAGE_POOL_MAX,
NETDEV_A_PAGE_POOL_MAX = (__NETDEV_A_PAGE_POOL_MAX - 1)
@@ -131,6 +132,7 @@ enum {
NETDEV_A_QUEUE_IFINDEX,
NETDEV_A_QUEUE_TYPE,
NETDEV_A_QUEUE_NAPI_ID,
+ NETDEV_A_QUEUE_DMABUF,
__NETDEV_A_QUEUE_MAX,
NETDEV_A_QUEUE_MAX = (__NETDEV_A_QUEUE_MAX - 1)
diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c
index bd54cf50b658a..e944fd56c6b8e 100644
--- a/net/core/netdev-genl.c
+++ b/net/core/netdev-genl.c
@@ -293,6 +293,7 @@ static int
netdev_nl_queue_fill_one(struct sk_buff *rsp, struct net_device *netdev,
u32 q_idx, u32 q_type, const struct genl_info *info)
{
+ struct net_devmem_dmabuf_binding *binding;
struct netdev_rx_queue *rxq;
struct netdev_queue *txq;
void *hdr;
@@ -312,6 +313,15 @@ netdev_nl_queue_fill_one(struct sk_buff *rsp, struct net_device *netdev,
if (rxq->napi && nla_put_u32(rsp, NETDEV_A_QUEUE_NAPI_ID,
rxq->napi->napi_id))
goto nla_put_failure;
+
+ binding = (struct net_devmem_dmabuf_binding *)
+ rxq->mp_params.mp_priv;
+ if (binding) {
+ if (nla_put_u32(rsp, NETDEV_A_QUEUE_DMABUF,
+ binding->id))
+ goto nla_put_failure;
+ }
+
break;
case NETDEV_QUEUE_TYPE_TX:
txq = netdev_get_tx_queue(netdev, q_idx);
diff --git a/net/core/page_pool_user.c b/net/core/page_pool_user.c
index 3a3277ba167b1..ca13363aea343 100644
--- a/net/core/page_pool_user.c
+++ b/net/core/page_pool_user.c
@@ -212,6 +212,7 @@ static int
page_pool_nl_fill(struct sk_buff *rsp, const struct page_pool *pool,
const struct genl_info *info)
{
+ struct net_devmem_dmabuf_binding *binding = pool->mp_priv;
size_t inflight, refsz;
void *hdr;
@@ -241,6 +242,9 @@ page_pool_nl_fill(struct sk_buff *rsp, const struct page_pool *pool,
pool->user.detach_time))
goto err_cancel;
+ if (binding && nla_put_u32(rsp, NETDEV_A_PAGE_POOL_DMABUF, binding->id))
+ goto err_cancel;
+
genlmsg_end(rsp, hdr);
return 0;
diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/netdev.h
index 91bf3ecc5f1d9..7c308f04e7a06 100644
--- a/tools/include/uapi/linux/netdev.h
+++ b/tools/include/uapi/linux/netdev.h
@@ -93,6 +93,7 @@ enum {
NETDEV_A_PAGE_POOL_INFLIGHT,
NETDEV_A_PAGE_POOL_INFLIGHT_MEM,
NETDEV_A_PAGE_POOL_DETACH_TIME,
+ NETDEV_A_PAGE_POOL_DMABUF,
__NETDEV_A_PAGE_POOL_MAX,
NETDEV_A_PAGE_POOL_MAX = (__NETDEV_A_PAGE_POOL_MAX - 1)
@@ -131,6 +132,7 @@ enum {
NETDEV_A_QUEUE_IFINDEX,
NETDEV_A_QUEUE_TYPE,
NETDEV_A_QUEUE_NAPI_ID,
+ NETDEV_A_QUEUE_DMABUF,
__NETDEV_A_QUEUE_MAX,
NETDEV_A_QUEUE_MAX = (__NETDEV_A_QUEUE_MAX - 1)
--
2.45.2.803.g4e1b14247a-goog
next prev parent reply other threads:[~2024-07-10 0:18 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-10 0:17 [PATCH net-next v16 00/13] Device Memory TCP Mina Almasry
2024-07-10 0:17 ` [PATCH net-next v16 01/13] netdev: add netdev_rx_queue_restart() Mina Almasry
2024-07-10 15:35 ` Jakub Kicinski
2024-07-10 0:17 ` [PATCH net-next v16 02/13] net: netdev netlink api to bind dma-buf to a net device Mina Almasry
2024-07-10 10:30 ` Donald Hunter
2024-07-10 15:43 ` Jakub Kicinski
2024-07-10 0:17 ` [PATCH net-next v16 03/13] netdev: support binding dma-buf to netdevice Mina Almasry
2024-07-10 15:56 ` Jakub Kicinski
2024-07-10 0:17 ` [PATCH net-next v16 04/13] netdev: netdevice devmem allocator Mina Almasry
2024-07-10 16:36 ` Jakub Kicinski
2024-07-10 19:29 ` Mina Almasry
2024-07-10 19:55 ` Jakub Kicinski
2024-07-10 22:45 ` Mina Almasry
2024-07-10 0:17 ` [PATCH net-next v16 05/13] page_pool: devmem support Mina Almasry
2024-07-10 16:49 ` Jakub Kicinski
2024-07-10 20:29 ` Mina Almasry
2024-07-11 1:22 ` Jakub Kicinski
2024-07-10 23:42 ` Mina Almasry
2024-07-11 1:23 ` Jakub Kicinski
2024-07-11 20:57 ` Mina Almasry
2024-07-11 21:41 ` Jakub Kicinski
2024-07-10 0:17 ` [PATCH net-next v16 06/13] memory-provider: dmabuf devmem memory provider Mina Almasry
2024-07-10 0:17 ` [PATCH net-next v16 07/13] net: support non paged skb frags Mina Almasry
2024-07-10 0:17 ` [PATCH net-next v16 08/13] net: add support for skbs with unreadable frags Mina Almasry
2024-07-10 0:17 ` [PATCH net-next v16 09/13] tcp: RX path for devmem TCP Mina Almasry
2024-07-10 0:17 ` [PATCH net-next v16 10/13] net: add SO_DEVMEM_DONTNEED setsockopt to release RX frags Mina Almasry
2024-07-10 0:17 ` [PATCH net-next v16 11/13] net: add devmem TCP documentation Mina Almasry
2024-07-10 10:28 ` Donald Hunter
2024-07-10 0:17 ` [PATCH net-next v16 12/13] selftests: add ncdevmem, netcat for devmem TCP Mina Almasry
2024-07-11 0:44 ` John Hubbard
2024-07-11 15:28 ` Mina Almasry
2024-07-11 18:34 ` John Hubbard
2024-07-10 0:17 ` Mina Almasry [this message]
2024-07-11 1:35 ` [PATCH net-next v16 13/13] netdev: add dmabuf introspection Jakub Kicinski
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