Jakub Kicinski 0c26159352 nfp: bpf: xdp_adjust_tail support ... Add support for adjust_tail. There are no FW changes needed but add a FW capability just in case there would be any issue with previously released FW, or we will have to change the ABI in the future. The helper is trivial and shouldn't be used too often so just inline the body of the function. We add the delta to locally maintained packet length register and check for overflow, since add of negative value must overflow if result is positive. Note that if delta of 0 would be allowed in the kernel this trick stops working and we need one more instruction to compare lengths before and after the change. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>		2018-08-04 21:58:12 +02:00
..
cmsg.c	nfp: bpf: remember maps by ID	2018-07-27 07:14:35 +02:00
fw.h	nfp: bpf: xdp_adjust_tail support	2018-08-04 21:58:12 +02:00
jit.c	nfp: bpf: xdp_adjust_tail support	2018-08-04 21:58:12 +02:00
main.c	nfp: bpf: xdp_adjust_tail support	2018-08-04 21:58:12 +02:00
main.h	nfp: bpf: xdp_adjust_tail support	2018-08-04 21:58:12 +02:00
Makefile	nfp: add Makefiles to all directories	2018-02-22 15:22:50 -05:00
offload.c	nfp: bpf: improve map offload info messages	2018-07-27 07:14:35 +02:00
verifier.c	nfp: bpf: xdp_adjust_tail support	2018-08-04 21:58:12 +02:00