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| author |   Jakub Kicinski <jakub.kicinski@netronome.com> | 2018-05-08 19:37:06 -0700 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2018-05-09 18:04:36 +0200 |
| commit | 0d8300325660f81787892a1c58dc1f9428a67143 (patch) | |
| tree | f4da9a224e333ac48b3110e1a3c4490646fef6d5 /net/core/filter.c | |
| parent | Merge branch 'bpf-btf-id' (diff) | |
| download | linux-dev-0d8300325660f81787892a1c58dc1f9428a67143.tar.xz linux-dev-0d8300325660f81787892a1c58dc1f9428a67143.zip | |
bpf: xdp: allow offloads to store into rx_queue_index
It's fairly easy for offloaded XDP programs to select the RX queue
packets go to. We need a way of expressing this in the software.
Allow write to the rx_queue_index field of struct xdp_md for
device-bound programs.
Skip convert_ctx_access callback entirely for offloads.
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>
Diffstat (limited to 'net/core/filter.c')
| -rw-r--r-- | net/core/filter.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index 6877426c23a6..0baa715e4699 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -4645,8 +4645,15 @@ static bool xdp_is_valid_access(int off, int size, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) { - if (type == BPF_WRITE) + if (type == BPF_WRITE) { + if (bpf_prog_is_dev_bound(prog->aux)) { + switch (off) { + case offsetof(struct xdp_md, rx_queue_index): + return __is_valid_xdp_access(off, size); + } + } return false; + } switch (off) { case offsetof(struct xdp_md, data): |