diff options
| author | Jakub Kicinski | 2017-10-12 19:34:13 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-10-14 20:13:28 +0200 |
| commit | 0f6cf4ddf63fa4d645c36d96ed1092fe7a0a8d0f (patch) | |
| tree | 4cac4784c6210669ec0d7c683e0f3c9729e9f9cb /drivers/net/ethernet | |
| parent | nfp: bpf: implement byte swap instruction (diff) | |
| download | kernel-qcow2-linux-0f6cf4ddf63fa4d645c36d96ed1092fe7a0a8d0f.tar.gz kernel-qcow2-linux-0f6cf4ddf63fa4d645c36d96ed1092fe7a0a8d0f.tar.xz kernel-qcow2-linux-0f6cf4ddf63fa4d645c36d96ed1092fe7a0a8d0f.zip | |
nfp: bpf: support BPF offload only on little endian
eBPF is host-endian specific. Translating both BE and LE eBPF
to the NFP is feasible, but would require quite a bit of indirection.
The fact that I don't have access to any BE hosts that would fit
a 25G/40G/100G NIC is also limiting my ability to test big endian.
For now restrict the offload to little endian hosts only.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/main.c b/drivers/net/ethernet/netronome/nfp/bpf/main.c index 074726980994..6e74f8db1cc1 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/main.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/main.c @@ -42,9 +42,11 @@ static bool nfp_net_ebpf_capable(struct nfp_net *nn) { +#ifdef __LITTLE_ENDIAN if (nn->cap & NFP_NET_CFG_CTRL_BPF && nn_readb(nn, NFP_NET_CFG_BPF_ABI) == NFP_NET_BPF_ABI) return true; +#endif return false; } |