From nobody Sat Nov 30 10:42:43 2024 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 93FB71AB50A for ; Tue, 10 Sep 2024 17:15:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725988535; cv=none; b=gpHjQV5z5oic6geQ40a8yNtEGoFPVcjFSyhePHr9/JeQqwpvD+rIAbdzOckYxpLLoJ3QeQrl39DcTz+BlWo9ig9ozUXV3L1sltTCoNYsfo560REYI+Tq+17mOjyR07+i+m1MUFXtBTzrhv/5TNRFDYffjK0UIgFlRCuzBko3dL4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725988535; c=relaxed/simple; bh=Xy8VKEYnwSDTZv8an0rR9HKd/Tj5FfgAkYHF3vihv2Y=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=UMFphml3fs4axu7M/xeuMQ+pMhLfnL4JfKXCKyuYZjDENjkjsp7FoSkZrYQTBZ5fqtBjpoudue6UiRL5551ixcbiJGxXiDOWe7JXQr71yQM9x+70Ta5J4fjzWbIox0+NivOoMj3jY5IdH0D707g0qROM+RnEK1ZgP7SY/ySfSLg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--almasrymina.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=ATHsfwNv; arc=none smtp.client-ip=209.85.219.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--almasrymina.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="ATHsfwNv" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-e1a91576564so11795280276.0 for ; Tue, 10 Sep 2024 10:15:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1725988525; x=1726593325; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=Qr6gPDE1UK5B1I6Iwow8La1ZlcxSQmU/6SFdxdUBC4Y=; b=ATHsfwNvrfTKk+mFi4/+LHorWbqSOVBG4OlVIs1s4bu0WA2stczgVDF34saVXw6+D3 olXRbNVN8+b8ReZq6DBsR4WC8zzp+xi/kGwZNSEzTGXnskxuUZlnw4XOaiwqc+hRAVCr 4M4XIrVJfMC32RzuvHMvYobhittaGnD+UOFeH4ZinVxpy6eZ3ixDh+Q+8BqLTeuGnv37 QMGaPTdPvUgUEQUdiJCAWd7ExUYCD76iiMXj+yv0yHfsP/VpfaiiAoeCb0pT+bWgQSvl TSi10y9qXu5XsKUSbIwpd9ODDDEpnzlk8VsbXHBaLSwZ5KtjMNU+1QAr3Fx5DamJnVXw ih7w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725988525; x=1726593325; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Qr6gPDE1UK5B1I6Iwow8La1ZlcxSQmU/6SFdxdUBC4Y=; b=QjXh00+DN4+W0P20G6igThmwmqsm7AQtmWdly4hqLfeP9a+66BKYMixXh1jQJ3gMQn qMtvcdrNSFChkeo9XtusbBC5GQA0fvibznzrVhKdaM7yvDFusWMEtt1WDD46ETCJd+vu J/jvygLu2MEm7TTD1y+MPF0jZNhAH7MY3o6Tjv2CNDPzBA3IcdeBk/nSfkBqWZp/wsVA VhVrUpNB73vlCPPQ+G1QgGwtfiHRTMZgEa9akTCHvd86/t/K1rh0hewROzw82mnitCVB +Oa3kQc9jJohnijrWKrCKclKYGBh1Hqzjx15Tq/R5ojdDC+4+wh4cba47qO/sTFOV5NA 8yTg== X-Forwarded-Encrypted: i=1; AJvYcCVAXqdmigqSffQhaGuisT2d6euQymc8VAlf5R9Cy0OzL7InfpWLzGsgs2SmdUT/egSFGSRhD4zru+rEZhY=@vger.kernel.org X-Gm-Message-State: AOJu0YyscdSkh45FyZ5kRuHC6eTlLkHxpe28+1K2X+rzWEaLc4aMWAd9 TTC2zdb4SpiiZIWdvHEB+w8EliriUmz3ZMQqE1S1KqBMFbkvhF5fCD+MGCrAekCQpQaBwobRSDz gE1IabkNFpYCBewVivz7QZg== X-Google-Smtp-Source: AGHT+IGZCB+Bwki1p8fPYMVywna8K28oR2ffM3Z76Sw+TMtsD9U3aR4klRuEh553qX5yh3rrwgfboDT90OGw/cXyFA== X-Received: from almasrymina.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:4bc5]) (user=almasrymina job=sendgmr) by 2002:a25:2e08:0:b0:e17:8e73:866c with SMTP id 3f1490d57ef6-e1d34a40ec5mr105962276.10.1725988524819; Tue, 10 Sep 2024 10:15:24 -0700 (PDT) Date: Tue, 10 Sep 2024 17:14:57 +0000 In-Reply-To: <20240910171458.219195-1-almasrymina@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240910171458.219195-1-almasrymina@google.com> X-Mailer: git-send-email 2.46.0.598.g6f2099f65c-goog Message-ID: <20240910171458.219195-14-almasrymina@google.com> Subject: [PATCH net-next v26 13/13] netdev: add dmabuf introspection From: Mina Almasry 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, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: Mina Almasry , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Donald Hunter , Jonathan Corbet , Richard Henderson , Ivan Kokshaysky , Matt Turner , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Andreas Larsson , Jesper Dangaard Brouer , Ilias Apalodimas , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Arnd Bergmann , Steffen Klassert , Herbert Xu , David Ahern , Willem de Bruijn , "=?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?=" , Magnus Karlsson , Maciej Fijalkowski , Jonathan Lemon , Shuah Khan , Alexei Starovoitov , Daniel Borkmann , John Fastabend , Sumit Semwal , "=?UTF-8?q?Christian=20K=C3=B6nig?=" , Pavel Begunkov , David Wei , Jason Gunthorpe , Yunsheng Lin , Shailend Chand , Harshitha Ramamurthy , Shakeel Butt , Jeroen de Borst , Praveen Kaligineedi , Bagas Sanjaya , Christoph Hellwig , Nikolay Aleksandrov , Taehee Yoo Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 Signed-off-by: Mina Almasry Reviewed-by: Jakub Kicinski --- v24: - Code cleanup, no cast and use 1 if statement (Jakub) --- Documentation/netlink/specs/netdev.yaml | 10 ++++++++++ include/uapi/linux/netdev.h | 2 ++ net/core/netdev-genl.c | 7 +++++++ net/core/page_pool_user.c | 5 +++++ tools/include/uapi/linux/netdev.h | 2 ++ 5 files changed, 26 insertions(+) diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlin= k/specs/netdev.yaml index 0c747530c275..08412c279297 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 =20 - 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 91bf3ecc5f1d..7c308f04e7a0 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, =20 __NETDEV_A_PAGE_POOL_MAX, NETDEV_A_PAGE_POOL_MAX =3D (__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, =20 __NETDEV_A_QUEUE_MAX, NETDEV_A_QUEUE_MAX =3D (__NETDEV_A_QUEUE_MAX - 1) diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c index 9153a8ab0cf8..1cb954f2d39e 100644 --- a/net/core/netdev-genl.c +++ b/net/core/netdev-genl.c @@ -295,6 +295,7 @@ 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; @@ -314,6 +315,12 @@ netdev_nl_queue_fill_one(struct sk_buff *rsp, struct n= et_device *netdev, if (rxq->napi && nla_put_u32(rsp, NETDEV_A_QUEUE_NAPI_ID, rxq->napi->napi_id)) goto nla_put_failure; + + binding =3D rxq->mp_params.mp_priv; + if (binding && + nla_put_u32(rsp, NETDEV_A_QUEUE_DMABUF, binding->id)) + goto nla_put_failure; + break; case NETDEV_QUEUE_TYPE_TX: txq =3D netdev_get_tx_queue(netdev, q_idx); diff --git a/net/core/page_pool_user.c b/net/core/page_pool_user.c index cd6267ba6fa3..48335766c1bf 100644 --- a/net/core/page_pool_user.c +++ b/net/core/page_pool_user.c @@ -9,6 +9,7 @@ #include #include =20 +#include "devmem.h" #include "page_pool_priv.h" #include "netdev-genl-gen.h" =20 @@ -213,6 +214,7 @@ 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 =3D pool->mp_priv; size_t inflight, refsz; void *hdr; =20 @@ -242,6 +244,9 @@ page_pool_nl_fill(struct sk_buff *rsp, const struct pag= e_pool *pool, pool->user.detach_time)) goto err_cancel; =20 + if (binding && nla_put_u32(rsp, NETDEV_A_PAGE_POOL_DMABUF, binding->id)) + goto err_cancel; + genlmsg_end(rsp, hdr); =20 return 0; diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/n= etdev.h index 91bf3ecc5f1d..7c308f04e7a0 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, =20 __NETDEV_A_PAGE_POOL_MAX, NETDEV_A_PAGE_POOL_MAX =3D (__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, =20 __NETDEV_A_QUEUE_MAX, NETDEV_A_QUEUE_MAX =3D (__NETDEV_A_QUEUE_MAX - 1) --=20 2.46.0.598.g6f2099f65c-goog