diff options
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/bpf/offload.c')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/offload.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/offload.c b/drivers/net/ethernet/netronome/nfp/bpf/offload.c index a88bb5bc0082..f215abcbc18e 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/offload.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/offload.c @@ -146,6 +146,7 @@ nfp_net_bpf_offload_prepare(struct nfp_net *nn, { unsigned int code_sz = max_instr * sizeof(u64); enum nfp_bpf_action_type act; + unsigned int stack_size; u16 start_off, done_off; unsigned int max_mtu; int ret; @@ -167,6 +168,19 @@ nfp_net_bpf_offload_prepare(struct nfp_net *nn, start_off = nn_readw(nn, NFP_NET_CFG_BPF_START); done_off = nn_readw(nn, NFP_NET_CFG_BPF_DONE); + if (cls_bpf->prog->aux->stack_depth > 64) { + nn_info(nn, "large stack not supported: program %dB > 64B\n", + cls_bpf->prog->aux->stack_depth); + return -EOPNOTSUPP; + } + + stack_size = nn_readb(nn, NFP_NET_CFG_BPF_STACK_SZ) * 64; + if (cls_bpf->prog->aux->stack_depth > stack_size) { + nn_info(nn, "stack too large: program %dB > FW stack %dB\n", + cls_bpf->prog->aux->stack_depth, stack_size); + return -EOPNOTSUPP; + } + *code = dma_zalloc_coherent(nn->dp.dev, code_sz, dma_addr, GFP_KERNEL); if (!*code) return -ENOMEM; |