Martin KaFai Lau 17bedab272 bpf: xdp: Allow head adjustment in XDP prog ...

This patch allows XDP prog to extend/remove the packet
data at the head (like adding or removing header).  It is
done by adding a new XDP helper bpf_xdp_adjust_head().

It also renames bpf_helper_changes_skb_data() to
bpf_helper_changes_pkt_data() to better reflect
that XDP prog does not work on skb.

This patch adds one "xdp_adjust_head" bit to bpf_prog for the
XDP-capable driver to check if the XDP prog requires
bpf_xdp_adjust_head() support.  The driver can then decide
to error out during XDP_SETUP_PROG.

Signed-off-by: Martin KaFai Lau <[email protected]>
Acked-by: Daniel Borkmann <[email protected]>
Acked-by: Alexei Starovoitov <[email protected]>
Acked-by: John Fastabend <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

2016-12-08 14:25:13 -05:00

..

arraymap.c

bpf: Add bpf_current_task_under_cgroup helper

2016-08-12 21:49:41 -07:00

bpf_lru_list.c

bpf: Fix compilation warning in __bpf_lru_list_rotate_inactive

2016-11-16 11:30:56 -05:00

bpf_lru_list.h

bpf: Add percpu LRU list

2016-11-15 11:50:20 -05:00

cgroup.c

bpf: Add new cgroup attach type to enable sock modifications

2016-12-02 13:46:08 -05:00

core.c

bpf: xdp: Allow head adjustment in XDP prog

2016-12-08 14:25:13 -05:00

hashtab.c

bpf: Add BPF_MAP_TYPE_LRU_PERCPU_HASH

2016-11-15 11:50:20 -05:00

helpers.c

bpf: add helper for retrieving current numa node id

2016-10-22 17:05:52 -04:00

inode.c

bpf: allow for mount options to specify permissions

2016-11-27 20:38:47 -05:00

Makefile

cgroup: add support for eBPF programs

2016-11-25 16:25:52 -05:00

percpu_freelist.c

bpf: introduce percpu_freelist

2016-03-08 15:28:31 -05:00

percpu_freelist.h

bpf: introduce percpu_freelist

2016-03-08 15:28:31 -05:00

stackmap.c

bpf: add BPF_CALL_x macros for declaring helpers

2016-09-09 19:36:04 -07:00

syscall.c

bpf: xdp: Allow head adjustment in XDP prog

2016-12-08 14:25:13 -05:00

verifier.c

bpf: xdp: Allow head adjustment in XDP prog

2016-12-08 14:25:13 -05:00