@@ -105,20 +105,19 @@ static inline struct pgcache *nicvf_alloc_page(struct nicvf *nic,
/* Check if page can be recycled */
if (page) {
ref_count = page_ref_count(page);
- /* Check if this page has been used once i.e 'put_page'
- * called after packet transmission i.e internal ref_count
- * and page's ref_count are equal i.e page can be recycled.
+ /* This page can be recycled if internal ref_count and page's
+ * ref_count are equal, indicating that the page has been used
+ * once for packet transmission. For non-XDP mode, internal
+ * ref_count is always '1'.
*/
- if (rbdr->is_xdp && (ref_count == pgcache->ref_count))
- pgcache->ref_count--;
- else
- page = NULL;
-
- /* In non-XDP mode, page's ref_count needs to be '1' for it
- * to be recycled.
- */
- if (!rbdr->is_xdp && (ref_count != 1))
+ if (rbdr->is_xdp) {
+ if (ref_count == pgcache->ref_count)
+ pgcache->ref_count--;
+ else
+ page = NULL;
+ } else if (ref_count != 1) {
page = NULL;
+ }
}
if (!page) {
Commit 773225388dae15e72790 ("net: thunderx: Optimize page recycling for XDP") added code to nicvf_alloc_page() that inadvertently disables receive buffer page recycling for the non-XDP case by always NULL'ng the page pointer. This patch corrects two if-conditionals to allow for the recycling of non-XDP mode pages by only setting the page pointer to NULL when the page is not ready for recycling. Fixes: 773225388dae15e72790 ("net: thunderx: Optimize page recycling for XDP") Signed-off-by: Dean Nelson <dnelson@redhat.com> --- drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 23 +++++++++++----------- 1 file changed, 11 insertions(+), 12 deletions(-)