* [--bla-- 01/20] net: page_pool: don't cast mp param to devmem
2024-12-18 0:35 [PATCH net-next v9 00/21] io_uring zero copy rx David Wei
@ 2024-12-18 0:35 ` David Wei
2024-12-18 0:35 ` [--bla-- 02/20] net: prefix devmem specific helpers David Wei
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: David Wei @ 2024-12-18 0:35 UTC (permalink / raw)
To: io-uring, netdev
Cc: Jens Axboe, Pavel Begunkov, Jakub Kicinski, Paolo Abeni,
David S. Miller, Eric Dumazet, Jesper Dangaard Brouer,
David Ahern, Mina Almasry, Stanislav Fomichev, Joe Damato,
Pedro Tammela
From: Pavel Begunkov <[email protected]>
page_pool_check_memory_provider() is a generic path and shouldn't assume
anything about the actual type of the memory provider argument. It's
fine while devmem is the only provider, but cast away the devmem
specific binding types to avoid confusion.
Signed-off-by: Pavel Begunkov <[email protected]>
Signed-off-by: David Wei <[email protected]>
---
net/core/page_pool_user.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/page_pool_user.c b/net/core/page_pool_user.c
index 48335766c1bf..8d31c71bea1a 100644
--- a/net/core/page_pool_user.c
+++ b/net/core/page_pool_user.c
@@ -353,7 +353,7 @@ void page_pool_unlist(struct page_pool *pool)
int page_pool_check_memory_provider(struct net_device *dev,
struct netdev_rx_queue *rxq)
{
- struct net_devmem_dmabuf_binding *binding = rxq->mp_params.mp_priv;
+ void *binding = rxq->mp_params.mp_priv;
struct page_pool *pool;
struct hlist_node *n;
--
2.43.5
^ permalink raw reply related [flat|nested] 6+ messages in thread* [--bla-- 02/20] net: prefix devmem specific helpers
2024-12-18 0:35 [PATCH net-next v9 00/21] io_uring zero copy rx David Wei
2024-12-18 0:35 ` [--bla-- 01/20] net: page_pool: don't cast mp param to devmem David Wei
@ 2024-12-18 0:35 ` David Wei
2024-12-18 0:35 ` [--bla-- 03/20] net: generalise net_iov chunk owners David Wei
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: David Wei @ 2024-12-18 0:35 UTC (permalink / raw)
To: io-uring, netdev
Cc: Jens Axboe, Pavel Begunkov, Jakub Kicinski, Paolo Abeni,
David S. Miller, Eric Dumazet, Jesper Dangaard Brouer,
David Ahern, Mina Almasry, Stanislav Fomichev, Joe Damato,
Pedro Tammela
From: Pavel Begunkov <[email protected]>
Add prefixes to all helpers that are specific to devmem TCP, i.e.
net_iov_binding[_id].
Reviewed-by: Mina Almasry <[email protected]>
Signed-off-by: Pavel Begunkov <[email protected]>
Signed-off-by: David Wei <[email protected]>
---
net/core/devmem.c | 2 +-
net/core/devmem.h | 14 +++++++-------
net/ipv4/tcp.c | 2 +-
3 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/net/core/devmem.c b/net/core/devmem.c
index 0b6ed7525b22..5e1a05082ab8 100644
--- a/net/core/devmem.c
+++ b/net/core/devmem.c
@@ -93,7 +93,7 @@ net_devmem_alloc_dmabuf(struct net_devmem_dmabuf_binding *binding)
void net_devmem_free_dmabuf(struct net_iov *niov)
{
- struct net_devmem_dmabuf_binding *binding = net_iov_binding(niov);
+ struct net_devmem_dmabuf_binding *binding = net_devmem_iov_binding(niov);
unsigned long dma_addr = net_devmem_get_dma_addr(niov);
if (WARN_ON(!gen_pool_has_addr(binding->chunk_pool, dma_addr,
diff --git a/net/core/devmem.h b/net/core/devmem.h
index 76099ef9c482..99782ddeca40 100644
--- a/net/core/devmem.h
+++ b/net/core/devmem.h
@@ -86,11 +86,16 @@ static inline unsigned int net_iov_idx(const struct net_iov *niov)
}
static inline struct net_devmem_dmabuf_binding *
-net_iov_binding(const struct net_iov *niov)
+net_devmem_iov_binding(const struct net_iov *niov)
{
return net_iov_owner(niov)->binding;
}
+static inline u32 net_devmem_iov_binding_id(const struct net_iov *niov)
+{
+ return net_devmem_iov_binding(niov)->id;
+}
+
static inline unsigned long net_iov_virtual_addr(const struct net_iov *niov)
{
struct dmabuf_genpool_chunk_owner *owner = net_iov_owner(niov);
@@ -99,11 +104,6 @@ static inline unsigned long net_iov_virtual_addr(const struct net_iov *niov)
((unsigned long)net_iov_idx(niov) << PAGE_SHIFT);
}
-static inline u32 net_iov_binding_id(const struct net_iov *niov)
-{
- return net_iov_owner(niov)->binding->id;
-}
-
static inline void
net_devmem_dmabuf_binding_get(struct net_devmem_dmabuf_binding *binding)
{
@@ -171,7 +171,7 @@ static inline unsigned long net_iov_virtual_addr(const struct net_iov *niov)
return 0;
}
-static inline u32 net_iov_binding_id(const struct net_iov *niov)
+static inline u32 net_devmem_iov_binding_id(const struct net_iov *niov)
{
return 0;
}
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 0d704bda6c41..b872de9a8271 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2494,7 +2494,7 @@ static int tcp_recvmsg_dmabuf(struct sock *sk, const struct sk_buff *skb,
/* Will perform the exchange later */
dmabuf_cmsg.frag_token = tcp_xa_pool.tokens[tcp_xa_pool.idx];
- dmabuf_cmsg.dmabuf_id = net_iov_binding_id(niov);
+ dmabuf_cmsg.dmabuf_id = net_devmem_iov_binding_id(niov);
offset += copy;
remaining_len -= copy;
--
2.43.5
^ permalink raw reply related [flat|nested] 6+ messages in thread* [--bla-- 03/20] net: generalise net_iov chunk owners
2024-12-18 0:35 [PATCH net-next v9 00/21] io_uring zero copy rx David Wei
2024-12-18 0:35 ` [--bla-- 01/20] net: page_pool: don't cast mp param to devmem David Wei
2024-12-18 0:35 ` [--bla-- 02/20] net: prefix devmem specific helpers David Wei
@ 2024-12-18 0:35 ` David Wei
2024-12-18 0:35 ` [--bla-- 04/20] net: page_pool: create hooks for custom page providers David Wei
2024-12-18 0:35 ` [--bla-- 05/20] net: page_pool: add mp op for netlink reporting David Wei
4 siblings, 0 replies; 6+ messages in thread
From: David Wei @ 2024-12-18 0:35 UTC (permalink / raw)
To: io-uring, netdev
Cc: Jens Axboe, Pavel Begunkov, Jakub Kicinski, Paolo Abeni,
David S. Miller, Eric Dumazet, Jesper Dangaard Brouer,
David Ahern, Mina Almasry, Stanislav Fomichev, Joe Damato,
Pedro Tammela
From: Pavel Begunkov <[email protected]>
Currently net_iov stores a pointer to struct dmabuf_genpool_chunk_owner,
which serves as a useful abstraction to share data and provide a
context. However, it's too devmem specific, and we want to reuse it for
other memory providers, and for that we need to decouple net_iov from
devmem. Make net_iov to point to a new base structure called
net_iov_area, which dmabuf_genpool_chunk_owner extends.
Reviewed-by: Mina Almasry <[email protected]>
Signed-off-by: Pavel Begunkov <[email protected]>
Signed-off-by: David Wei <[email protected]>
---
include/net/netmem.h | 21 ++++++++++++++++++++-
net/core/devmem.c | 25 +++++++++++++------------
net/core/devmem.h | 25 +++++++++----------------
3 files changed, 42 insertions(+), 29 deletions(-)
diff --git a/include/net/netmem.h b/include/net/netmem.h
index 1b58faa4f20f..c61d5b21e7b4 100644
--- a/include/net/netmem.h
+++ b/include/net/netmem.h
@@ -24,11 +24,20 @@ struct net_iov {
unsigned long __unused_padding;
unsigned long pp_magic;
struct page_pool *pp;
- struct dmabuf_genpool_chunk_owner *owner;
+ struct net_iov_area *owner;
unsigned long dma_addr;
atomic_long_t pp_ref_count;
};
+struct net_iov_area {
+ /* Array of net_iovs for this area. */
+ struct net_iov *niovs;
+ size_t num_niovs;
+
+ /* Offset into the dma-buf where this chunk starts. */
+ unsigned long base_virtual;
+};
+
/* These fields in struct page are used by the page_pool and net stack:
*
* struct {
@@ -54,6 +63,16 @@ NET_IOV_ASSERT_OFFSET(dma_addr, dma_addr);
NET_IOV_ASSERT_OFFSET(pp_ref_count, pp_ref_count);
#undef NET_IOV_ASSERT_OFFSET
+static inline struct net_iov_area *net_iov_owner(const struct net_iov *niov)
+{
+ return niov->owner;
+}
+
+static inline unsigned int net_iov_idx(const struct net_iov *niov)
+{
+ return niov - net_iov_owner(niov)->niovs;
+}
+
/* netmem */
/**
diff --git a/net/core/devmem.c b/net/core/devmem.c
index 5e1a05082ab8..c250db6993d3 100644
--- a/net/core/devmem.c
+++ b/net/core/devmem.c
@@ -32,14 +32,15 @@ static void net_devmem_dmabuf_free_chunk_owner(struct gen_pool *genpool,
{
struct dmabuf_genpool_chunk_owner *owner = chunk->owner;
- kvfree(owner->niovs);
+ kvfree(owner->area.niovs);
kfree(owner);
}
static dma_addr_t net_devmem_get_dma_addr(const struct net_iov *niov)
{
- struct dmabuf_genpool_chunk_owner *owner = net_iov_owner(niov);
+ struct dmabuf_genpool_chunk_owner *owner;
+ owner = net_devmem_iov_to_chunk_owner(niov);
return owner->base_dma_addr +
((dma_addr_t)net_iov_idx(niov) << PAGE_SHIFT);
}
@@ -82,7 +83,7 @@ net_devmem_alloc_dmabuf(struct net_devmem_dmabuf_binding *binding)
offset = dma_addr - owner->base_dma_addr;
index = offset / PAGE_SIZE;
- niov = &owner->niovs[index];
+ niov = &owner->area.niovs[index];
niov->pp_magic = 0;
niov->pp = NULL;
@@ -250,9 +251,9 @@ net_devmem_bind_dmabuf(struct net_device *dev, unsigned int dmabuf_fd,
goto err_free_chunks;
}
- owner->base_virtual = virtual;
+ owner->area.base_virtual = virtual;
owner->base_dma_addr = dma_addr;
- owner->num_niovs = len / PAGE_SIZE;
+ owner->area.num_niovs = len / PAGE_SIZE;
owner->binding = binding;
err = gen_pool_add_owner(binding->chunk_pool, dma_addr,
@@ -264,17 +265,17 @@ net_devmem_bind_dmabuf(struct net_device *dev, unsigned int dmabuf_fd,
goto err_free_chunks;
}
- owner->niovs = kvmalloc_array(owner->num_niovs,
- sizeof(*owner->niovs),
- GFP_KERNEL);
- if (!owner->niovs) {
+ owner->area.niovs = kvmalloc_array(owner->area.num_niovs,
+ sizeof(*owner->area.niovs),
+ GFP_KERNEL);
+ if (!owner->area.niovs) {
err = -ENOMEM;
goto err_free_chunks;
}
- for (i = 0; i < owner->num_niovs; i++) {
- niov = &owner->niovs[i];
- niov->owner = owner;
+ for (i = 0; i < owner->area.num_niovs; i++) {
+ niov = &owner->area.niovs[i];
+ niov->owner = &owner->area;
page_pool_set_dma_addr_netmem(net_iov_to_netmem(niov),
net_devmem_get_dma_addr(niov));
}
diff --git a/net/core/devmem.h b/net/core/devmem.h
index 99782ddeca40..a2b9913e9a17 100644
--- a/net/core/devmem.h
+++ b/net/core/devmem.h
@@ -10,6 +10,8 @@
#ifndef _NET_DEVMEM_H
#define _NET_DEVMEM_H
+#include <net/netmem.h>
+
struct netlink_ext_ack;
struct net_devmem_dmabuf_binding {
@@ -51,17 +53,11 @@ struct net_devmem_dmabuf_binding {
* allocations from this chunk.
*/
struct dmabuf_genpool_chunk_owner {
- /* Offset into the dma-buf where this chunk starts. */
- unsigned long base_virtual;
+ struct net_iov_area area;
+ struct net_devmem_dmabuf_binding *binding;
/* dma_addr of the start of the chunk. */
dma_addr_t base_dma_addr;
-
- /* Array of net_iovs for this chunk. */
- struct net_iov *niovs;
- size_t num_niovs;
-
- struct net_devmem_dmabuf_binding *binding;
};
void __net_devmem_dmabuf_binding_free(struct net_devmem_dmabuf_binding *binding);
@@ -75,20 +71,17 @@ int net_devmem_bind_dmabuf_to_queue(struct net_device *dev, u32 rxq_idx,
void dev_dmabuf_uninstall(struct net_device *dev);
static inline struct dmabuf_genpool_chunk_owner *
-net_iov_owner(const struct net_iov *niov)
+net_devmem_iov_to_chunk_owner(const struct net_iov *niov)
{
- return niov->owner;
-}
+ struct net_iov_area *owner = net_iov_owner(niov);
-static inline unsigned int net_iov_idx(const struct net_iov *niov)
-{
- return niov - net_iov_owner(niov)->niovs;
+ return container_of(owner, struct dmabuf_genpool_chunk_owner, area);
}
static inline struct net_devmem_dmabuf_binding *
net_devmem_iov_binding(const struct net_iov *niov)
{
- return net_iov_owner(niov)->binding;
+ return net_devmem_iov_to_chunk_owner(niov)->binding;
}
static inline u32 net_devmem_iov_binding_id(const struct net_iov *niov)
@@ -98,7 +91,7 @@ static inline u32 net_devmem_iov_binding_id(const struct net_iov *niov)
static inline unsigned long net_iov_virtual_addr(const struct net_iov *niov)
{
- struct dmabuf_genpool_chunk_owner *owner = net_iov_owner(niov);
+ struct net_iov_area *owner = net_iov_owner(niov);
return owner->base_virtual +
((unsigned long)net_iov_idx(niov) << PAGE_SHIFT);
--
2.43.5
^ permalink raw reply related [flat|nested] 6+ messages in thread* [--bla-- 04/20] net: page_pool: create hooks for custom page providers
2024-12-18 0:35 [PATCH net-next v9 00/21] io_uring zero copy rx David Wei
` (2 preceding siblings ...)
2024-12-18 0:35 ` [--bla-- 03/20] net: generalise net_iov chunk owners David Wei
@ 2024-12-18 0:35 ` David Wei
2024-12-18 0:35 ` [--bla-- 05/20] net: page_pool: add mp op for netlink reporting David Wei
4 siblings, 0 replies; 6+ messages in thread
From: David Wei @ 2024-12-18 0:35 UTC (permalink / raw)
To: io-uring, netdev
Cc: Jens Axboe, Pavel Begunkov, Jakub Kicinski, Paolo Abeni,
David S. Miller, Eric Dumazet, Jesper Dangaard Brouer,
David Ahern, Mina Almasry, Stanislav Fomichev, Joe Damato,
Pedro Tammela
From: Jakub Kicinski <[email protected]>
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 provider, and provider
will wait for other references to be gone before feeding this
page back into the pool.
Signed-off-by: Jakub Kicinski <[email protected]>
Signed-off-by: Pavel Begunkov <[email protected]>
Signed-off-by: David Wei <[email protected]>
---
include/net/page_pool/types.h | 9 +++++++++
net/core/devmem.c | 14 +++++++++++++-
net/core/page_pool.c | 22 ++++++++++++++--------
3 files changed, 36 insertions(+), 9 deletions(-)
diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h
index ed4cd114180a..d6241e8a5106 100644
--- a/include/net/page_pool/types.h
+++ b/include/net/page_pool/types.h
@@ -152,8 +152,16 @@ struct page_pool_stats {
*/
#define PAGE_POOL_FRAG_GROUP_ALIGN (4 * sizeof(long))
+struct memory_provider_ops {
+ netmem_ref (*alloc_netmems)(struct page_pool *pool, gfp_t gfp);
+ bool (*release_netmem)(struct page_pool *pool, netmem_ref netmem);
+ int (*init)(struct page_pool *pool);
+ void (*destroy)(struct page_pool *pool);
+};
+
struct pp_memory_provider_params {
void *mp_priv;
+ const struct memory_provider_ops *mp_ops;
};
struct page_pool {
@@ -216,6 +224,7 @@ struct page_pool {
struct ptr_ring ring;
void *mp_priv;
+ const struct memory_provider_ops *mp_ops;
#ifdef CONFIG_PAGE_POOL_STATS
/* recycle stats are per-cpu to avoid locking */
diff --git a/net/core/devmem.c b/net/core/devmem.c
index c250db6993d3..48903b7ab215 100644
--- a/net/core/devmem.c
+++ b/net/core/devmem.c
@@ -26,6 +26,8 @@
/* Protected by rtnl_lock() */
static DEFINE_XARRAY_FLAGS(net_devmem_dmabuf_bindings, XA_FLAGS_ALLOC1);
+static const struct memory_provider_ops dmabuf_devmem_ops;
+
static void net_devmem_dmabuf_free_chunk_owner(struct gen_pool *genpool,
struct gen_pool_chunk *chunk,
void *not_used)
@@ -117,6 +119,7 @@ void net_devmem_unbind_dmabuf(struct net_devmem_dmabuf_binding *binding)
WARN_ON(rxq->mp_params.mp_priv != binding);
rxq->mp_params.mp_priv = NULL;
+ rxq->mp_params.mp_ops = NULL;
rxq_idx = get_netdev_rx_queue_index(rxq);
@@ -142,7 +145,7 @@ int net_devmem_bind_dmabuf_to_queue(struct net_device *dev, u32 rxq_idx,
}
rxq = __netif_get_rx_queue(dev, rxq_idx);
- if (rxq->mp_params.mp_priv) {
+ if (rxq->mp_params.mp_ops) {
NL_SET_ERR_MSG(extack, "designated queue already memory provider bound");
return -EEXIST;
}
@@ -160,6 +163,7 @@ int net_devmem_bind_dmabuf_to_queue(struct net_device *dev, u32 rxq_idx,
return err;
rxq->mp_params.mp_priv = binding;
+ rxq->mp_params.mp_ops = &dmabuf_devmem_ops;
err = netdev_rx_queue_restart(dev, rxq_idx);
if (err)
@@ -169,6 +173,7 @@ int net_devmem_bind_dmabuf_to_queue(struct net_device *dev, u32 rxq_idx,
err_xa_erase:
rxq->mp_params.mp_priv = NULL;
+ rxq->mp_params.mp_ops = NULL;
xa_erase(&binding->bound_rxqs, xa_idx);
return err;
@@ -388,3 +393,10 @@ bool mp_dmabuf_devmem_release_page(struct page_pool *pool, netmem_ref netmem)
/* We don't want the page pool put_page()ing our net_iovs. */
return false;
}
+
+static const struct memory_provider_ops dmabuf_devmem_ops = {
+ .init = mp_dmabuf_devmem_init,
+ .destroy = mp_dmabuf_devmem_destroy,
+ .alloc_netmems = mp_dmabuf_devmem_alloc_netmems,
+ .release_netmem = mp_dmabuf_devmem_release_page,
+};
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index e07ad7315955..784a547b2ca4 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -285,13 +285,19 @@ static int page_pool_init(struct page_pool *pool,
rxq = __netif_get_rx_queue(pool->slow.netdev,
pool->slow.queue_idx);
pool->mp_priv = rxq->mp_params.mp_priv;
+ pool->mp_ops = rxq->mp_params.mp_ops;
}
- if (pool->mp_priv) {
+ if (pool->mp_ops) {
if (!pool->dma_map || !pool->dma_sync)
return -EOPNOTSUPP;
- err = mp_dmabuf_devmem_init(pool);
+ if (WARN_ON(!is_kernel_rodata((unsigned long)pool->mp_ops))) {
+ err = -EFAULT;
+ goto free_ptr_ring;
+ }
+
+ err = pool->mp_ops->init(pool);
if (err) {
pr_warn("%s() mem-provider init failed %d\n", __func__,
err);
@@ -588,8 +594,8 @@ netmem_ref page_pool_alloc_netmems(struct page_pool *pool, gfp_t gfp)
return netmem;
/* Slow-path: cache empty, do real allocation */
- if (static_branch_unlikely(&page_pool_mem_providers) && pool->mp_priv)
- netmem = mp_dmabuf_devmem_alloc_netmems(pool, gfp);
+ if (static_branch_unlikely(&page_pool_mem_providers) && pool->mp_ops)
+ netmem = pool->mp_ops->alloc_netmems(pool, gfp);
else
netmem = __page_pool_alloc_pages_slow(pool, gfp);
return netmem;
@@ -680,8 +686,8 @@ void page_pool_return_page(struct page_pool *pool, netmem_ref netmem)
bool put;
put = true;
- if (static_branch_unlikely(&page_pool_mem_providers) && pool->mp_priv)
- put = mp_dmabuf_devmem_release_page(pool, netmem);
+ if (static_branch_unlikely(&page_pool_mem_providers) && pool->mp_ops)
+ put = pool->mp_ops->release_netmem(pool, netmem);
else
__page_pool_release_page_dma(pool, netmem);
@@ -1049,8 +1055,8 @@ static void __page_pool_destroy(struct page_pool *pool)
page_pool_unlist(pool);
page_pool_uninit(pool);
- if (pool->mp_priv) {
- mp_dmabuf_devmem_destroy(pool);
+ if (pool->mp_ops) {
+ pool->mp_ops->destroy(pool);
static_branch_dec(&page_pool_mem_providers);
}
--
2.43.5
^ permalink raw reply related [flat|nested] 6+ messages in thread* [--bla-- 05/20] net: page_pool: add mp op for netlink reporting
2024-12-18 0:35 [PATCH net-next v9 00/21] io_uring zero copy rx David Wei
` (3 preceding siblings ...)
2024-12-18 0:35 ` [--bla-- 04/20] net: page_pool: create hooks for custom page providers David Wei
@ 2024-12-18 0:35 ` David Wei
4 siblings, 0 replies; 6+ messages in thread
From: David Wei @ 2024-12-18 0:35 UTC (permalink / raw)
To: io-uring, netdev
Cc: Jens Axboe, Pavel Begunkov, Jakub Kicinski, Paolo Abeni,
David S. Miller, Eric Dumazet, Jesper Dangaard Brouer,
David Ahern, Mina Almasry, Stanislav Fomichev, Joe Damato,
Pedro Tammela
From: Pavel Begunkov <[email protected]>
Add a mandatory memory provider callback that prints information about
the provider.
Signed-off-by: Pavel Begunkov <[email protected]>
Signed-off-by: David Wei <[email protected]>
---
include/net/page_pool/types.h | 1 +
net/core/devmem.c | 9 +++++++++
net/core/page_pool_user.c | 3 +--
3 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h
index d6241e8a5106..a473ea0c48c4 100644
--- a/include/net/page_pool/types.h
+++ b/include/net/page_pool/types.h
@@ -157,6 +157,7 @@ struct memory_provider_ops {
bool (*release_netmem)(struct page_pool *pool, netmem_ref netmem);
int (*init)(struct page_pool *pool);
void (*destroy)(struct page_pool *pool);
+ int (*nl_report)(const struct page_pool *pool, struct sk_buff *rsp);
};
struct pp_memory_provider_params {
diff --git a/net/core/devmem.c b/net/core/devmem.c
index 48903b7ab215..df51a6c312db 100644
--- a/net/core/devmem.c
+++ b/net/core/devmem.c
@@ -394,9 +394,18 @@ bool mp_dmabuf_devmem_release_page(struct page_pool *pool, netmem_ref netmem)
return false;
}
+static int mp_dmabuf_devmem_nl_report(const struct page_pool *pool,
+ struct sk_buff *rsp)
+{
+ const struct net_devmem_dmabuf_binding *binding = pool->mp_priv;
+
+ return nla_put_u32(rsp, NETDEV_A_PAGE_POOL_DMABUF, binding->id);
+}
+
static const struct memory_provider_ops dmabuf_devmem_ops = {
.init = mp_dmabuf_devmem_init,
.destroy = mp_dmabuf_devmem_destroy,
.alloc_netmems = mp_dmabuf_devmem_alloc_netmems,
.release_netmem = mp_dmabuf_devmem_release_page,
+ .nl_report = mp_dmabuf_devmem_nl_report,
};
diff --git a/net/core/page_pool_user.c b/net/core/page_pool_user.c
index 8d31c71bea1a..61212f388bc8 100644
--- a/net/core/page_pool_user.c
+++ b/net/core/page_pool_user.c
@@ -214,7 +214,6 @@ 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 = pool->mp_priv;
size_t inflight, refsz;
void *hdr;
@@ -244,7 +243,7 @@ page_pool_nl_fill(struct sk_buff *rsp, const struct page_pool *pool,
pool->user.detach_time))
goto err_cancel;
- if (binding && nla_put_u32(rsp, NETDEV_A_PAGE_POOL_DMABUF, binding->id))
+ if (pool->mp_ops && pool->mp_ops->nl_report(pool, rsp))
goto err_cancel;
genlmsg_end(rsp, hdr);
--
2.43.5
^ permalink raw reply related [flat|nested] 6+ messages in thread