iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: page_pool: stash the NAPI ID for easier access

Browse Source 
To avoid any issues with race conditions on accessing napi
and having to think about the lifetime of NAPI objects
in netlink GET - stash the napi_id to which page pool
was linked at creation time.

Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jakub Kicinski 2023-11-26 15:07:31 -08:00 committed by Paolo Abeni
parent 083772c9f9
commit 02b3de80c5
2 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/net/page_pool/types.h
View File

@ -193,6 +193,7 @@ struct page_pool {
/* User-facing fields, protected by page_pools_lock */
struct {
struct hlist_node list;
u32 napi_id;
u32 id;
} user;
};

4
net/core/page_pool_user.c
View File

@ -37,9 +37,11 @@ int page_pool_list(struct page_pool *pool)
if (err < 0)
goto err_unlock;
if (pool->slow.netdev)
if (pool->slow.netdev) {
hlist_add_head(&pool->user.list,
&pool->slow.netdev->page_pools);
pool->user.napi_id = pool->p.napi ? pool->p.napi->napi_id : 0;
}
mutex_unlock(&page_pools_lock);
return 0;