xdp: add generic xdp_build_skb_from_buff()

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The code which builds an skb from an &xdp_buff keeps multiplying itself
around the drivers with almost no changes. Let's try to stop that by
adding a generic function.
Unlike __xdp_build_skb_from_frame(), always allocate an skbuff head
using napi_build_skb() and make use of the available xdp_rxq pointer to
assign the Rx queue index. In case of PP-backed buffer, mark the skb to
be recycled, as every PP user's been switched to recycle skbs.

Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Link: https://patch.msgid.link/20241218174435.1445282-4-aleksander.lobakin@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Alexander Lobakin 2024-12-18 18:44:31 +01:00 • committed by Jakub Kicinski

parent 68ddc8ae17

commit 539c1fba1a

2 changed files with 56 additions and 0 deletions

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include/net/xdp.h

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55

net/core/xdp.c

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