linux/net/xfrm
Daniel Xu 8f0ec8c681 bpf: xfrm: Add bpf_xdp_get_xfrm_state() kfunc
This commit adds an unstable kfunc helper to access internal xfrm_state
associated with an SA. This is intended to be used for the upcoming
IPsec pcpu work to assign special pcpu SAs to a particular CPU. In other
words: for custom software RSS.

That being said, the function that this kfunc wraps is fairly generic
and used for a lot of xfrm tasks. I'm sure people will find uses
elsewhere over time.

This commit also adds a corresponding bpf_xdp_xfrm_state_release() kfunc
to release the refcnt acquired by bpf_xdp_get_xfrm_state(). The verifier
will require that all acquired xfrm_state's are released.

Co-developed-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Antony Antony <antony.antony@secunet.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
Link: https://lore.kernel.org/r/a29699c42f5fad456b875c98dd11c6afc3ffb707.1702593901.git.dxu@dxuuu.xyz
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-12-14 17:12:49 -08:00
..
espintcp.c
Kconfig
Makefile bpf: xfrm: Add bpf_xdp_get_xfrm_state() kfunc 2023-12-14 17:12:49 -08:00
xfrm_algo.c
xfrm_compat.c
xfrm_device.c
xfrm_hash.c
xfrm_hash.h
xfrm_inout.h
xfrm_input.c
xfrm_interface_bpf.c bpf: Add __bpf_kfunc_{start,end}_defs macros 2023-11-01 22:33:53 -07:00
xfrm_interface_core.c ipsec-next-2023-10-28 2023-10-30 14:36:57 -07:00
xfrm_ipcomp.c
xfrm_output.c
xfrm_policy.c bpf: xfrm: Add bpf_xdp_get_xfrm_state() kfunc 2023-12-14 17:12:49 -08:00
xfrm_proc.c
xfrm_replay.c
xfrm_state_bpf.c bpf: xfrm: Add bpf_xdp_get_xfrm_state() kfunc 2023-12-14 17:12:49 -08:00
xfrm_state.c
xfrm_sysctl.c
xfrm_user.c