XDP for idpf is currently 5.5 chapters:
* convert Rx to libeth;
* convert Tx and stats to libeth;
* generic XDP and XSk code changes;
* generic XDP and XSk code additions (you are here);
* actual XDP for idpf via new libeth_xdp;
* XSk for idpf (via ^).
Part III.2 does the following:
* allows mixing pages from several Page Pools within one XDP frame;
* optimizes &xdp_frame structure and removes no-more-used field;
* adds generic functions to build skbs from xdp_buffs (regular and
XSk) and attach frags to xdp_buffs (regular and XSk);
* adds helper to optimize XSk xmit in drivers;
* makes XDP core and Page Pool a bit more netmem-friendly.
Everything is prereq for libeth_xdp, but will be useful standalone
as well: faster xdp_return_frame_bulk() and xdp_frame fields access,
less code in drivers, faster XSk XDP_PASS, smaller object code.
Alexander Lobakin (12):
page_pool: allow mixing PPs within one bulk
xdp: get rid of xdp_frame::mem.id
xdp: make __xdp_return() MP-agnostic
xdp: add generic xdp_buff_add_frag()
xdp: add generic xdp_build_skb_from_buff()
xsk: make xsk_buff_add_frag really add the frag via
__xdp_buff_add_frag()
xsk: add generic XSk &xdp_buff -> skb conversion
xsk: add helper to get &xdp_desc's DMA and meta pointer in one go
page_pool: add a couple of netmem counterparts
skbuff: allow 2-4-argument skb_frag_dma_map()
jump_label: export static_key_slow_{inc,dec}_cpuslocked()
unroll: add generic loop unroll helpers
include/net/page_pool/types.h | 6 +-
include/linux/skbuff.h | 47 ++-
include/linux/unroll.h | 44 +++
include/net/page_pool/helpers.h | 46 ++-
include/net/xdp.h | 130 +++++++-
include/net/xdp_sock_drv.h | 41 ++-
include/net/xsk_buff_pool.h | 8 +
.../net/ethernet/freescale/dpaa/dpaa_eth.c | 2 +-
drivers/net/ethernet/intel/i40e/i40e_xsk.c | 30 +-
drivers/net/ethernet/intel/ice/ice_xsk.c | 32 +-
drivers/net/veth.c | 4 +-
kernel/bpf/cpumap.c | 2 +-
kernel/jump_label.c | 2 +
net/bpf/test_run.c | 4 +-
net/core/filter.c | 17 +-
net/core/page_pool.c | 109 ++++---
net/core/xdp.c | 290 ++++++++++++++----
net/xdp/xsk_buff_pool.c | 40 +++
18 files changed, 645 insertions(+), 209 deletions(-)
---
Each patch except trivial 0003 and 0009 was on the lists already.
* 0001 now includes Jakub's suggestions (pre-pass + while(count));
* 0004 doesn't leak refcounts anymore (also Jakub).
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2.47.1
