From: Jakub Kicinski Date: Thu, 12 Oct 2017 17:34:13 +0000 (-0700) Subject: nfp: bpf: support BPF offload only on little endian X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=0f6cf4ddf63fa4d645c36d96ed1092fe7a0a8d0f;p=openwrt%2Fstaging%2Fblogic.git 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 Reviewed-by: Simon Horman Signed-off-by: David S. Miller --- 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; }