On 2024-05-10 16:21, Mina Almasry wrote:
> -/* Stub */
> int netdev_nl_bind_rx_doit(struct sk_buff *skb, struct genl_info *info)
> {
> - return 0;
> + struct nlattr *tb[ARRAY_SIZE(netdev_queue_dmabuf_nl_policy)];
> + struct net_devmem_dmabuf_binding *out_binding;
> + struct
On 2024-05-10 16:21, Mina Almasry wrote:
> +void net_devmem_unbind_dmabuf(struct net_devmem_dmabuf_binding *binding)
> +{
> + struct netdev_rx_queue *rxq;
> + unsigned long xa_idx;
> + unsigned int rxq_idx;
> +
> + if (!binding)
> + return;
> +
> + if
On 2024-05-10 16:21, Mina Almasry wrote:
> +/* This returns the absolute dma_addr_t calculated from
> + * net_iov_owner(niov)->owner->base_dma_addr, not the page_pool-owned
> + * niov->dma_addr.
> + *
> + * The absolute dma_addr_t is a dma_addr_t that is always uncompressed.
> + *
> + * The
On 2024-05-01 00:55, Christoph Hellwig wrote:
> On Fri, Apr 26, 2024 at 05:17:52PM -0700, David Wei wrote:
>> On 2024-04-02 5:20 pm, Mina Almasry wrote:
>>> @@ -69,20 +106,26 @@ net_iov_binding(const struct net_iov *niov)
>>> */
>>> typedef unsigned long __b
On 2024-04-02 5:20 pm, Mina Almasry wrote:
> @@ -69,20 +106,26 @@ net_iov_binding(const struct net_iov *niov)
> */
> typedef unsigned long __bitwise netmem_ref;
>
> +static inline bool netmem_is_net_iov(const netmem_ref netmem)
> +{
> +#if defined(CONFIG_PAGE_POOL) &&
On 2024-04-02 5:20 pm, Mina Almasry wrote:
> Add a netdev_dmabuf_binding struct which represents the
> dma-buf-to-netdevice binding. The netlink API will bind the dma-buf to
> rx queues on the netdevice. On the binding, the dma_buf_attach
> & dma_buf_map_attachment will occur. The entries in the
On 2024-03-17 19:02, Christoph Hellwig wrote:
> On Mon, Mar 04, 2024 at 06:01:37PM -0800, Mina Almasry wrote:
>> From: Jakub Kicinski
>>
>> The page providers which try to reuse the same pages will
>> need to hold onto the ref, even if page gets released from
>> the pool - as in releasing the
On 2024-03-04 18:01, Mina Almasry wrote:
> This API enables the net stack to reset the queues used for devmem.
>
> Signed-off-by: Mina Almasry
>
> ---
> include/linux/netdevice.h | 24
> 1 file changed, 24 insertions(+)
>
> diff --git a/include/linux/netdevice.h
On 2024-03-04 18:01, Mina Almasry wrote:
> From: Jakub Kicinski
>
> The page providers which try to reuse the same pages will
> need to hold onto the ref, even if page gets released from
> the pool - as in releasing the page from the pp just transfers
> the "ownership" reference from pp to the
On 2024-03-05 18:42, Mina Almasry wrote:
> On Tue, Mar 5, 2024 at 6:28 PM David Wei wrote:
>>
>> On 2024-03-04 18:01, Mina Almasry wrote:
>>> + if (pool->p.queue)
>>> + binding = READ_ONCE(pool->p.queue->binding);
>>> +
>
On 2024-03-04 18:01, Mina Almasry wrote:
> + if (pool->p.queue)
> + binding = READ_ONCE(pool->p.queue->binding);
> +
> + if (binding) {
> + pool->mp_ops = _devmem_ops;
> + pool->mp_priv = binding;
> + }
This is specific to TCP devmem. For ZC Rx we
On 2024-03-04 18:01, Mina Almasry wrote:
> +struct memory_provider_ops {
> + int (*init)(struct page_pool *pool);
> + void (*destroy)(struct page_pool *pool);
> + struct page *(*alloc_pages)(struct page_pool *pool, gfp_t gfp);
> + bool (*release_page)(struct page_pool *pool, struct
On 2023-11-07 15:03, Mina Almasry wrote:
> On Tue, Nov 7, 2023 at 2:55 PM David Ahern wrote:
>>
>> On 11/7/23 3:10 PM, Mina Almasry wrote:
>>> On Mon, Nov 6, 2023 at 3:44 PM David Ahern wrote:
On 11/5/23 7:44 PM, Mina Almasry wrote:
> diff --git a/include/linux/netdevice.h
On 2023-11-07 14:55, David Ahern wrote:
> On 11/7/23 3:10 PM, Mina Almasry wrote:
>> On Mon, Nov 6, 2023 at 3:44 PM David Ahern wrote:
>>>
>>> On 11/5/23 7:44 PM, Mina Almasry wrote:
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index eeeda849115c..1c351c138a5b
On 2023-11-05 18:44, Mina Almasry wrote:
> Add a netdev_dmabuf_binding struct which represents the
> dma-buf-to-netdevice binding. The netlink API will bind the dma-buf to
> rx queues on the netdevice. On the binding, the dma_buf_attach
> & dma_buf_map_attachment will occur. The entries in the
On 19/08/2023 13:24, Mina Almasry wrote:
> On Sat, Aug 19, 2023 at 8:22 AM Jesper Dangaard Brouer
> wrote:
>>
>>
>>
>> On 19/08/2023 16.08, Willem de Bruijn wrote:
>>> On Sat, Aug 19, 2023 at 5:51 AM Jesper Dangaard Brouer
>>> wrote:
On 10/08/2023 03.57, Mina Almasry wrote:
On 09/08/2023 18:57, Mina Almasry wrote:
> Add a netdev_dmabuf_binding struct which represents the
> dma-buf-to-netdevice binding. The netlink API will bind the dma-buf to
> an rx queue on the netdevice. On the binding, the dma_buf_attach
> & dma_buf_map_attachment will occur. The entries in the
?
>>>
>>> It would be interesting to see how well (easy) this integrates with
>>> io_uring. Besides avoiding all of the syscalls for receiving the iov and
>>> releasing the buffers back to the pool, io_uring also brings in the
>>> ability to seed
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