diff options
| author | Toke Høiland-Jørgensen <toke@redhat.com> | 2025-04-09 12:41:36 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-04-14 16:30:29 -0700 |
| commit | cd3c93167da0e760b5819246eae7a4ea30fd014b (patch) | |
| tree | 820f0662ccf8b0e6d0cf0a5f174201cee98c6119 /net | |
| parent | 452446f812867230cad0bfbb00afb77e3412bbf3 (diff) | |
| download | linux-next-cd3c93167da0e760b5819246eae7a4ea30fd014b.tar.gz linux-next-cd3c93167da0e760b5819246eae7a4ea30fd014b.zip | |
page_pool: Move pp_magic check into helper functions
Since we are about to stash some more information into the pp_magic
field, let's move the magic signature checks into a pair of helper
functions so it can be changed in one place.
Reviewed-by: Mina Almasry <almasrymina@google.com>
Tested-by: Yonglong Liu <liuyonglong@huawei.com>
Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://patch.msgid.link/20250409-page-pool-track-dma-v9-1-6a9ef2e0cba8@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/netmem_priv.h | 5 | ||||
| -rw-r--r-- | net/core/skbuff.c | 16 | ||||
| -rw-r--r-- | net/core/xdp.c | 4 |
3 files changed, 9 insertions, 16 deletions
diff --git a/net/core/netmem_priv.h b/net/core/netmem_priv.h index 7eadb8393e00..f33162fd281c 100644 --- a/net/core/netmem_priv.h +++ b/net/core/netmem_priv.h @@ -18,6 +18,11 @@ static inline void netmem_clear_pp_magic(netmem_ref netmem) __netmem_clear_lsb(netmem)->pp_magic = 0; } +static inline bool netmem_is_pp(netmem_ref netmem) +{ + return (netmem_get_pp_magic(netmem) & PP_MAGIC_MASK) == PP_SIGNATURE; +} + static inline void netmem_set_pp(netmem_ref netmem, struct page_pool *pool) { __netmem_clear_lsb(netmem)->pp = pool; diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 6cbf77bc61fc..74a2d886a35b 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -893,11 +893,6 @@ static void skb_clone_fraglist(struct sk_buff *skb) skb_get(list); } -static bool is_pp_netmem(netmem_ref netmem) -{ - return (netmem_get_pp_magic(netmem) & ~0x3UL) == PP_SIGNATURE; -} - int skb_pp_cow_data(struct page_pool *pool, struct sk_buff **pskb, unsigned int headroom) { @@ -995,14 +990,7 @@ bool napi_pp_put_page(netmem_ref netmem) { netmem = netmem_compound_head(netmem); - /* page->pp_magic is OR'ed with PP_SIGNATURE after the allocation - * in order to preserve any existing bits, such as bit 0 for the - * head page of compound page and bit 1 for pfmemalloc page, so - * mask those bits for freeing side when doing below checking, - * and page_is_pfmemalloc() is checked in __page_pool_put_page() - * to avoid recycling the pfmemalloc page. - */ - if (unlikely(!is_pp_netmem(netmem))) + if (unlikely(!netmem_is_pp(netmem))) return false; page_pool_put_full_netmem(netmem_get_pp(netmem), netmem, false); @@ -1042,7 +1030,7 @@ static int skb_pp_frag_ref(struct sk_buff *skb) for (i = 0; i < shinfo->nr_frags; i++) { head_netmem = netmem_compound_head(shinfo->frags[i].netmem); - if (likely(is_pp_netmem(head_netmem))) + if (likely(netmem_is_pp(head_netmem))) page_pool_ref_netmem(head_netmem); else page_ref_inc(netmem_to_page(head_netmem)); diff --git a/net/core/xdp.c b/net/core/xdp.c index 3cd0db9c9d2d..a014df88620c 100644 --- a/net/core/xdp.c +++ b/net/core/xdp.c @@ -438,8 +438,8 @@ void __xdp_return(netmem_ref netmem, enum xdp_mem_type mem_type, netmem = netmem_compound_head(netmem); if (napi_direct && xdp_return_frame_no_direct()) napi_direct = false; - /* No need to check ((page->pp_magic & ~0x3UL) == PP_SIGNATURE) - * as mem->type knows this a page_pool page + /* No need to check netmem_is_pp() as mem->type knows this a + * page_pool page */ page_pool_put_full_netmem(netmem_get_pp(netmem), netmem, napi_direct); |