diff options
| author | Toke Høiland-Jørgensen <toke@redhat.com> | 2022-01-03 18:08:07 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-01-06 06:46:32 +0300 |
| commit | 35b2e549894b7ef0b6e7f3a70c2ab75b767cfce9 (patch) | |
| tree | 32a1813d431fd1875d576c44eb0f624d05802b5f | |
| parent | 4a48ef70b93b8c7ed5190adfca18849e76387b80 (diff) | |
| download | linux-35b2e549894b7ef0b6e7f3a70c2ab75b767cfce9.tar.xz | |
page_pool: Add callback to init pages when they are allocated
Add a new callback function to page_pool that, if set, will be called every
time a new page is allocated. This will be used from bpf_test_run() to
initialise the page data with the data provided by userspace when running
XDP programs with redirect turned on.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Link: https://lore.kernel.org/bpf/20220103150812.87914-3-toke@redhat.com
| -rw-r--r-- | include/net/page_pool.h | 2 | ||||
| -rw-r--r-- | net/core/page_pool.c | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/net/page_pool.h b/include/net/page_pool.h index a4082406a003..d807b6800a4a 100644 --- a/include/net/page_pool.h +++ b/include/net/page_pool.h @@ -80,6 +80,8 @@ struct page_pool_params { enum dma_data_direction dma_dir; /* DMA mapping direction */ unsigned int max_len; /* max DMA sync memory size */ unsigned int offset; /* DMA addr offset */ + void (*init_callback)(struct page *page, void *arg); + void *init_arg; }; struct page_pool { diff --git a/net/core/page_pool.c b/net/core/page_pool.c index 1a6978427d6c..f53786f6666d 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -217,6 +217,8 @@ static void page_pool_set_pp_info(struct page_pool *pool, { page->pp = pool; page->pp_magic |= PP_SIGNATURE; + if (pool->p.init_callback) + pool->p.init_callback(page, pool->p.init_arg); } static void page_pool_clear_pp_info(struct page *page) |