diff mbox series

[RFC,v3,14/20] net: page pool: add io_uring memory provider

Message ID 20231219210357.4029713-15-dw@davidwei.uk (mailing list archive)
State New
Headers show
Series Zero copy Rx using io_uring | expand

Commit Message

David Wei Dec. 19, 2023, 9:03 p.m. UTC 
From: Pavel Begunkov <asml.silence@gmail.com>

Allow creating a special io_uring pp memory providers, which will be for
implementing io_uring zerocopy receive.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: David Wei <dw@davidwei.uk>
---
 include/net/page_pool/types.h | 1 +
 net/core/page_pool.c          | 6 ++++++
 2 files changed, 7 insertions(+)

Comments

Mina Almasry Dec. 19, 2023, 11:39 p.m. UTC | #1 
On Tue, Dec 19, 2023 at 1:04 PM David Wei <dw@davidwei.uk> wrote:
>
> From: Pavel Begunkov <asml.silence@gmail.com>
>
> Allow creating a special io_uring pp memory providers, which will be for
> implementing io_uring zerocopy receive.
>
> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
> Signed-off-by: David Wei <dw@davidwei.uk>

For your non-RFC versions, I think maybe you want to do a patch by
patch make W=1. I suspect this patch would build fail, because the
next patch adds the io_uring_pp_zc_ops. You're likely skipping this
step because this is an RFC, which is fine.

> ---
>  include/net/page_pool/types.h | 1 +
>  net/core/page_pool.c          | 6 ++++++
>  2 files changed, 7 insertions(+)
>
> diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h
> index fd846cac9fb6..f54ee759e362 100644
> --- a/include/net/page_pool/types.h
> +++ b/include/net/page_pool/types.h
> @@ -129,6 +129,7 @@ struct mem_provider;
>  enum pp_memory_provider_type {
>         __PP_MP_NONE, /* Use system allocator directly */
>         PP_MP_DMABUF_DEVMEM, /* dmabuf devmem provider */
> +       PP_MP_IOU_ZCRX, /* io_uring zerocopy receive provider */
>  };
>
>  struct pp_memory_provider_ops {
> diff --git a/net/core/page_pool.c b/net/core/page_pool.c
> index 9e3073d61a97..ebf5ff009d9d 100644
> --- a/net/core/page_pool.c
> +++ b/net/core/page_pool.c
> @@ -21,6 +21,7 @@
>  #include <linux/ethtool.h>
>  #include <linux/netdevice.h>
>  #include <linux/genalloc.h>
> +#include <linux/io_uring/net.h>
>
>  #include <trace/events/page_pool.h>
>
> @@ -242,6 +243,11 @@ static int page_pool_init(struct page_pool *pool,
>         case PP_MP_DMABUF_DEVMEM:
>                 pool->mp_ops = &dmabuf_devmem_ops;
>                 break;
> +#if defined(CONFIG_IO_URING)
> +       case PP_MP_IOU_ZCRX:
> +               pool->mp_ops = &io_uring_pp_zc_ops;
> +               break;
> +#endif
>         default:
>                 err = -EINVAL;
>                 goto free_ptr_ring;
> --
> 2.39.3
>


--
Thanks,
Mina
Pavel Begunkov Dec. 20, 2023, 12:04 a.m. UTC | #2 
On 12/19/23 23:39, Mina Almasry wrote:
> On Tue, Dec 19, 2023 at 1:04 PM David Wei <dw@davidwei.uk> wrote:
>>
>> From: Pavel Begunkov <asml.silence@gmail.com>
>>
>> Allow creating a special io_uring pp memory providers, which will be for
>> implementing io_uring zerocopy receive.
>>
>> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
>> Signed-off-by: David Wei <dw@davidwei.uk>
> 
> For your non-RFC versions, I think maybe you want to do a patch by
> patch make W=1. I suspect this patch would build fail, because the
> next patch adds the io_uring_pp_zc_ops. You're likely skipping this
> step because this is an RFC, which is fine.

Hmm? io_uring_pp_zc_ops is added is Patch 13, used in Patch 14.
Compiles well.


>> ---
>>   include/net/page_pool/types.h | 1 +
>>   net/core/page_pool.c          | 6 ++++++
>>   2 files changed, 7 insertions(+)
>>
>> diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h
>> index fd846cac9fb6..f54ee759e362 100644
>> --- a/include/net/page_pool/types.h
>> +++ b/include/net/page_pool/types.h
>> @@ -129,6 +129,7 @@ struct mem_provider;
>>   enum pp_memory_provider_type {
>>          __PP_MP_NONE, /* Use system allocator directly */
>>          PP_MP_DMABUF_DEVMEM, /* dmabuf devmem provider */
>> +       PP_MP_IOU_ZCRX, /* io_uring zerocopy receive provider */
>>   };
>>
>>   struct pp_memory_provider_ops {
>> diff --git a/net/core/page_pool.c b/net/core/page_pool.c
>> index 9e3073d61a97..ebf5ff009d9d 100644
>> --- a/net/core/page_pool.c
>> +++ b/net/core/page_pool.c
>> @@ -21,6 +21,7 @@
>>   #include <linux/ethtool.h>
>>   #include <linux/netdevice.h>
>>   #include <linux/genalloc.h>
>> +#include <linux/io_uring/net.h>
>>
>>   #include <trace/events/page_pool.h>
>>
>> @@ -242,6 +243,11 @@ static int page_pool_init(struct page_pool *pool,
>>          case PP_MP_DMABUF_DEVMEM:
>>                  pool->mp_ops = &dmabuf_devmem_ops;
>>                  break;
>> +#if defined(CONFIG_IO_URING)
>> +       case PP_MP_IOU_ZCRX:
>> +               pool->mp_ops = &io_uring_pp_zc_ops;
>> +               break;
>> +#endif
>>          default:
>>                  err = -EINVAL;
>>                  goto free_ptr_ring;
>> --
>> 2.39.3
>>
> 
> 
> --
> Thanks,
> Mina
diff mbox series

Patch

diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h
index fd846cac9fb6..f54ee759e362 100644
--- a/include/net/page_pool/types.h
+++ b/include/net/page_pool/types.h
@@ -129,6 +129,7 @@  struct mem_provider;
 enum pp_memory_provider_type {
 	__PP_MP_NONE, /* Use system allocator directly */
 	PP_MP_DMABUF_DEVMEM, /* dmabuf devmem provider */
+	PP_MP_IOU_ZCRX, /* io_uring zerocopy receive provider */
 };
 
 struct pp_memory_provider_ops {
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 9e3073d61a97..ebf5ff009d9d 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -21,6 +21,7 @@ 
 #include <linux/ethtool.h>
 #include <linux/netdevice.h>
 #include <linux/genalloc.h>
+#include <linux/io_uring/net.h>
 
 #include <trace/events/page_pool.h>
 
@@ -242,6 +243,11 @@  static int page_pool_init(struct page_pool *pool,
 	case PP_MP_DMABUF_DEVMEM:
 		pool->mp_ops = &dmabuf_devmem_ops;
 		break;
+#if defined(CONFIG_IO_URING)
+	case PP_MP_IOU_ZCRX:
+		pool->mp_ops = &io_uring_pp_zc_ops;
+		break;
+#endif
 	default:
 		err = -EINVAL;
 		goto free_ptr_ring;