From: David Ahern <dsahern@kernel•org>
To: Mina Almasry <almasrymina@google•com>,
linux-kernel@vger•kernel.org, netdev@vger•kernel.org,
bpf@vger•kernel.org
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Subject: Re: [RFC PATCH net-next v1 2/4] net: introduce abstraction for network memory
Date: Wed, 13 Dec 2023 22:34:43 -0800 [thread overview]
Message-ID: <80e14311-61ba-4dda-93bb-991ad4b779df@kernel.org> (raw)
In-Reply-To: <20231214020530.2267499-3-almasrymina@google.com>
On 12/13/23 7:05 PM, Mina Almasry wrote:
> diff --git a/include/net/netmem.h b/include/net/netmem.h
> new file mode 100644
> index 000000000000..e4309242d8be
> --- /dev/null
> +++ b/include/net/netmem.h
> @@ -0,0 +1,35 @@
> +/* SPDX-License-Identifier: GPL-2.0
> + *
> + * netmem.h
> + * Author: Mina Almasry <almasrymina@google•com>
> + * Copyright (C) 2023 Google LLC
> + */
> +
> +#ifndef _NET_NETMEM_H
> +#define _NET_NETMEM_H
> +
> +struct netmem {
> + union {
> + struct page page;
> +
> + /* Stub to prevent compiler implicitly converting from page*
> + * to netmem_t* and vice versa.
> + *
> + * Other memory type(s) net stack would like to support
> + * can be added to this union.
> + */
> + void *addr;
> + };
> +};
> +
> +static inline struct page *netmem_to_page(struct netmem *netmem)
> +{
> + return &netmem->page;
> +}
> +
> +static inline struct netmem *page_to_netmem(struct page *page)
> +{
> + return (struct netmem *)page;
container_of; no typecasts.
> +}
> +
> +#endif /* _NET_NETMEM_H */
next prev parent reply other threads:[~2023-12-14 6:34 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-14 2:05 [RFC PATCH net-next v1 0/4] Abstract page from net stack Mina Almasry
2023-12-14 2:05 ` [RFC PATCH net-next v1 1/4] vsock/virtio: use skb_frag_page() helper Mina Almasry
2023-12-14 6:27 ` David Ahern
2023-12-14 8:19 ` Stefano Garzarella
2023-12-14 2:05 ` [RFC PATCH net-next v1 2/4] net: introduce abstraction for network memory Mina Almasry
2023-12-14 6:34 ` David Ahern [this message]
2023-12-16 2:51 ` Jakub Kicinski
2023-12-16 22:10 ` Mina Almasry
2023-12-17 1:45 ` David Ahern
2023-12-17 8:14 ` Mina Almasry
2023-12-18 22:06 ` Jakub Kicinski
2023-12-18 22:38 ` Mina Almasry
2023-12-19 17:27 ` Shakeel Butt
2023-12-14 2:05 ` [RFC PATCH net-next v1 3/4] net: add netmem_t to skb_frag_t Mina Almasry
2023-12-14 2:05 ` [RFC PATCH net-next v1 4/4] net: page_pool: use netmem_t instead of struct page in API Mina Almasry
2023-12-14 12:05 ` Yunsheng Lin
2023-12-14 16:27 ` Mina Almasry
2023-12-15 2:11 ` Shakeel Butt
2023-12-15 11:04 ` Yunsheng Lin
2023-12-15 16:47 ` Shakeel Butt
2023-12-16 3:01 ` Jakub Kicinski
2023-12-16 19:46 ` Shakeel Butt
2023-12-16 22:06 ` Mina Almasry
2023-12-20 3:01 ` Mina Almasry
2023-12-21 11:32 ` Yunsheng Lin
2023-12-21 21:22 ` Mina Almasry
2023-12-22 6:42 ` Yunsheng Lin
2024-01-02 16:14 ` Mina Almasry
2024-01-03 9:47 ` Yunsheng Lin
2024-01-03 18:38 ` Mina Almasry
2024-01-04 8:48 ` Yunsheng Lin
2024-01-04 18:24 ` Mina Almasry
2024-01-05 8:40 ` Yunsheng Lin
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