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Date: Thu, 25 May 2023 14:57:40 +0200
From: Alexander Lobakin <aleksander.lobakin@...el.com>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: Alexander Lobakin <aleksander.lobakin@...el.com>,
Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
Magnus Karlsson <magnus.karlsson@...el.com>,
Michal Kubiak <michal.kubiak@...el.com>,
Larysa Zaremba <larysa.zaremba@...el.com>,
Jesper Dangaard Brouer <hawk@...nel.org>,
Ilias Apalodimas <ilias.apalodimas@...aro.org>,
Christoph Hellwig <hch@....de>,
Paul Menzel <pmenzel@...gen.mpg.de>,
netdev@...r.kernel.org,
intel-wired-lan@...ts.osuosl.org,
linux-kernel@...r.kernel.org
Subject: [PATCH net-next v2 06/12] net: skbuff: don't include <net/page_pool.h> into <linux/skbuff.h>
Currently, touching <net/page_pool.h> triggers a rebuild of more than
a half of the kernel. That's because it's included in <linux/skbuff.h>.
In 6a5bcd84e886 ("page_pool: Allow drivers to hint on SKB recycling"),
Matteo included it to be able to call a couple functions defined there.
Then, in 57f05bc2ab24 ("page_pool: keep pp info as long as page pool
owns the page") one of the calls was removed, so only one left.
It's call to page_pool_return_skb_page() in napi_frag_unref(). The
function is external and doesn't have any dependencies. Having include
of very niche page_pool.h only for that looks like an overkill.
Instead, move the declaration of that function to skbuff.h itself, with
a small comment that it's a special guest and should not be touched.
Now, after a few include fixes in the drivers, touching page_pool.h
only triggers rebuilding of the drivers using it and a couple core
networking files.
Signed-off-by: Alexander Lobakin <aleksander.lobakin@...el.com>
---
drivers/net/ethernet/engleder/tsnep_main.c | 1 +
drivers/net/ethernet/freescale/fec_main.c | 1 +
drivers/net/ethernet/mellanox/mlx5/core/en/params.c | 1 +
drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 1 +
drivers/net/wireless/mediatek/mt76/mt76.h | 1 +
include/linux/skbuff.h | 4 +++-
include/net/page_pool.h | 2 --
7 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/engleder/tsnep_main.c b/drivers/net/ethernet/engleder/tsnep_main.c
index 84751bb303a6..6222aaa5157f 100644
--- a/drivers/net/ethernet/engleder/tsnep_main.c
+++ b/drivers/net/ethernet/engleder/tsnep_main.c
@@ -28,6 +28,7 @@
#include <linux/iopoll.h>
#include <linux/bpf.h>
#include <linux/bpf_trace.h>
+#include <net/page_pool.h>
#include <net/xdp_sock_drv.h>
#define TSNEP_RX_OFFSET (max(NET_SKB_PAD, XDP_PACKET_HEADROOM) + NET_IP_ALIGN)
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 3ecf20ee5851..6ef162f8ed33 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -38,6 +38,7 @@
#include <linux/in.h>
#include <linux/ip.h>
#include <net/ip.h>
+#include <net/page_pool.h>
#include <net/selftests.h>
#include <net/tso.h>
#include <linux/tcp.h>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
index 9c94807097cb..3235a3a4ed08 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
@@ -6,6 +6,7 @@
#include "en/port.h"
#include "en_accel/en_accel.h"
#include "en_accel/ipsec.h"
+#include <net/page_pool.h>
#include <net/xdp_sock_drv.h>
static u8 mlx5e_mpwrq_min_page_shift(struct mlx5_core_dev *mdev)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
index f0e6095809fa..1bd91bc09eb8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
@@ -35,6 +35,7 @@
#include "en/xdp.h"
#include "en/params.h"
#include <linux/bitfield.h>
+#include <net/page_pool.h>
int mlx5e_xdp_max_mtu(struct mlx5e_params *params, struct mlx5e_xsk_param *xsk)
{
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index 6b07b8fafec2..95c16f11d156 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -15,6 +15,7 @@
#include <linux/average.h>
#include <linux/soc/mediatek/mtk_wed.h>
#include <net/mac80211.h>
+#include <net/page_pool.h>
#include "util.h"
#include "testmode.h"
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 8cff3d817131..163d3b2d00cb 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -32,7 +32,6 @@
#include <linux/if_packet.h>
#include <linux/llist.h>
#include <net/flow.h>
-#include <net/page_pool.h>
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
#include <linux/netfilter/nf_conntrack_common.h>
#endif
@@ -3412,6 +3411,9 @@ static inline void skb_frag_ref(struct sk_buff *skb, int f)
__skb_frag_ref(&skb_shinfo(skb)->frags[f]);
}
+/* Internal from net/core/page_pool.c, do not use in drivers directly */
+bool page_pool_return_skb_page(struct page *page, bool napi_safe);
+
static inline void
napi_frag_unref(skb_frag_t *frag, bool recycle, bool napi_safe)
{
diff --git a/include/net/page_pool.h b/include/net/page_pool.h
index c8ec2f34722b..821c75bba125 100644
--- a/include/net/page_pool.h
+++ b/include/net/page_pool.h
@@ -240,8 +240,6 @@ inline enum dma_data_direction page_pool_get_dma_dir(struct page_pool *pool)
return pool->p.dma_dir;
}
-bool page_pool_return_skb_page(struct page *page, bool napi_safe);
-
struct page_pool *page_pool_create(const struct page_pool_params *params);
struct xdp_mem_info;
--
2.40.1
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