diff mbox series

[bpf-next,v2,03/14] nfp: bpf: round up the size of the stack

Message ID 1515587167-1959-4-git-send-email-quentin.monnet@netronome.com
State Accepted, archived
Delegated to: BPF Maintainers
Headers show
Series [bpf-next,v2,01/14] nfp: don't try to register XDP rxq structures on control queues | expand

Commit Message

Quentin Monnet Jan. 10, 2018, 12:25 p.m. UTC 
From: Jakub Kicinski <jakub.kicinski@netronome.com>

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 <jakub.kicinski@netronome.com>
---
 drivers/net/ethernet/netronome/nfp/bpf/offload.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/netronome/nfp/bpf/offload.c b/drivers/net/ethernet/netronome/nfp/bpf/offload.c
index fa2905e67b07..8dbf13450bab 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);