From: Jakub Kicinski Date: Wed, 10 Jan 2018 12:25:56 +0000 (+0000) Subject: nfp: bpf: round up the size of the stack X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c4f7730be580f8c39decc058246a83ddf7d7b3cb;p=linux.git nfp: bpf: round up the size of the stack Kernel enforces the alignment of the bottom of the stack, NFP deals with positive offsets better so we should align the top of the stack. Round the stack size to NFP word size (4B). Signed-off-by: Jakub Kicinski Signed-off-by: Daniel Borkmann --- diff --git a/drivers/net/ethernet/netronome/nfp/bpf/offload.c b/drivers/net/ethernet/netronome/nfp/bpf/offload.c index fa2905e67b073..8dbf13450bab6 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/offload.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/offload.c @@ -147,7 +147,7 @@ int nfp_bpf_translate(struct nfp_app *app, struct nfp_net *nn, return -EOPNOTSUPP; } - nfp_prog->stack_depth = prog->aux->stack_depth; + nfp_prog->stack_depth = round_up(prog->aux->stack_depth, 4); nfp_prog->start_off = nn_readw(nn, NFP_NET_CFG_BPF_START); nfp_prog->tgt_done = nn_readw(nn, NFP_NET_CFG_BPF_DONE);