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xdp: register system page pool as an XDP memory model

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To make the system page pool usable as a source for allocating XDP
frames, we need to register it with xdp_reg_mem_model(), so that page
return works correctly. This is done in preparation for using the system
page_pool to convert XDP_PASS XSk frames to skbs; for the same reason,
make the per-cpu variable non-static so we can access it from other
source files as well (but w/o exporting).

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Link: https://patch.msgid.link/20241203173733.3181246-7-aleksander.lobakin@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Toke Høiland-Jørgensen
2024-12-03 18:37:29 +01:00
committed by Jakub Kicinski
parent 9e25dd9d65
commit e77d9aee95
2 changed files with 10 additions and 1 deletions
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include/linux/netdevice.h
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@@ -3322,6 +3322,7 @@ struct softnet_data {
};
DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data);
DECLARE_PER_CPU(struct page_pool *, system_page_pool);
#ifndef CONFIG_PREEMPT_RT
static inline int dev_recursion_level(void)