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From: Jakub Kicinski <kuba@kernel.org>
To: Mina Almasry <almasrymina@google.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-doc@vger.kernel.org, kvm@vger.kernel.org,
	virtualization@lists.linux.dev, linux-kselftest@vger.kernel.org,
	"Donald Hunter" <donald.hunter@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	"Eric Dumazet" <edumazet@google.com>,
	"Paolo Abeni" <pabeni@redhat.com>,
	"Simon Horman" <horms@kernel.org>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Andrew Lunn" <andrew+netdev@lunn.ch>,
	"Jeroen de Borst" <jeroendb@google.com>,
	"Harshitha Ramamurthy" <hramamurthy@google.com>,
	"Kuniyuki Iwashima" <kuniyu@amazon.com>,
	"Willem de Bruijn" <willemb@google.com>,
	"David Ahern" <dsahern@kernel.org>,
	"Neal Cardwell" <ncardwell@google.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	"Jason Wang" <jasowang@redhat.com>,
	"Xuan Zhuo" <xuanzhuo@linux.alibaba.com>,
	"Eugenio Pérez" <eperezma@redhat.com>,
	"Stefan Hajnoczi" <stefanha@redhat.com>,
	"Stefano Garzarella" <sgarzare@redhat.com>,
	"Shuah Khan" <shuah@kernel.org>,
	sdf@fomichev.me, asml.silence@gmail.com, dw@davidwei.uk,
	"Jamal Hadi Salim" <jhs@mojatatu.com>,
	"Victor Nogueira" <victor@mojatatu.com>,
	"Pedro Tammela" <pctammela@mojatatu.com>,
	"Samiullah Khawaja" <skhawaja@google.com>
Subject: Re: [PATCH net-next v6 7/8] net: check for driver support in netmem TX
Date: Fri, 28 Feb 2025 16:43:01 -0800	[thread overview]
Message-ID: <20250228164301.07af6753@kernel.org> (raw)
In-Reply-To: <20250227041209.2031104-8-almasrymina@google.com>

On Thu, 27 Feb 2025 04:12:08 +0000 Mina Almasry wrote:
> +	if (!skb_frags_readable(skb) && !dev->netmem_tx)

How do you know it's for _this_ device tho?
The driver doesn't seem to check the DMA mapping belongs to it either.

Remind me, how do we prevent the unreadable skbs from getting into the
Tx path today? 

  reply	other threads:[~2025-03-01  0:43 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-27  4:12 [PATCH net-next v6 0/8] Device memory TCP TX Mina Almasry
2025-02-27  4:12 ` [PATCH net-next v6 1/8] net: add get_netmem/put_netmem support Mina Almasry
2025-03-01  0:38   ` Jakub Kicinski
2025-03-01  1:29     ` Mina Almasry
2025-03-04  0:20       ` Jakub Kicinski
2025-03-05  1:39         ` Mina Almasry
2025-03-06 21:40           ` Jakub Kicinski
2025-03-06 22:44             ` Mina Almasry
2025-03-06 23:02               ` Jakub Kicinski
2025-03-06 23:22                 ` Willem de Bruijn
2025-02-27  4:12 ` [PATCH net-next v6 2/8] net: devmem: TCP tx netlink api Mina Almasry
2025-02-27  4:12 ` [PATCH net-next v6 3/8] net: devmem: Implement TX path Mina Almasry
2025-03-04 20:44   ` Pranjal Shrivastava
2025-02-27  4:12 ` [PATCH net-next v6 4/8] net: add devmem TCP TX documentation Mina Almasry
2025-02-27  7:59   ` Bagas Sanjaya
2025-02-27  4:12 ` [PATCH net-next v6 5/8] net: enable driver support for netmem TX Mina Almasry
2025-02-27  4:12 ` [PATCH net-next v6 6/8] gve: add netmem TX support to GVE DQO-RDA mode Mina Almasry
2025-02-27  4:12 ` [PATCH net-next v6 7/8] net: check for driver support in netmem TX Mina Almasry
2025-03-01  0:43   ` Jakub Kicinski [this message]
2025-03-01  1:53     ` Mina Almasry
2025-03-04  0:29       ` Jakub Kicinski
2025-03-04  3:53         ` Mina Almasry
2025-03-05  0:17           ` Jakub Kicinski
2025-02-27  4:12 ` [PATCH net-next v6 8/8] selftests: ncdevmem: Implement devmem TCP TX Mina Almasry
2025-02-28 14:25 ` [PATCH net-next v6 0/8] Device memory " Lei Yang

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