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authorJakub Kicinski <jakub.kicinski@netronome.com>2018-03-24 06:00:13 +0300
committerAlexei Starovoitov <ast@kernel.org>2018-03-24 20:41:24 +0300
commite8a4796ee2954db9f7e9b52e5fbc66ef876752f6 (patch)
treeccd1d428ff372ff42d8abf3a53d24a6e6b6b37e4 /drivers
parent4b6eca9d6817e58ae9b3342a5974e8fd9285279e (diff)
downloadlinux-e8a4796ee2954db9f7e9b52e5fbc66ef876752f6.tar.xz
nfp: bpf: fix check of program max insn count
NFP program allocation length is in bytes and NFP program length is in instructions, fix the comparison of the two. Fixes: 9314c442d7dd ("nfp: bpf: move translation prepare to offload.c") Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Jiong Wang <jiong.wang@netronome.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/netronome/nfp/bpf/jit.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/jit.c b/drivers/net/ethernet/netronome/nfp/bpf/jit.c
index 56451edf01c2..ecd7c33baf3c 100644
--- a/drivers/net/ethernet/netronome/nfp/bpf/jit.c
+++ b/drivers/net/ethernet/netronome/nfp/bpf/jit.c
@@ -74,7 +74,9 @@ nfp_meta_has_prev(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta)
static void nfp_prog_push(struct nfp_prog *nfp_prog, u64 insn)
{
- if (nfp_prog->__prog_alloc_len == nfp_prog->prog_len) {
+ if (nfp_prog->__prog_alloc_len / sizeof(u64) == nfp_prog->prog_len) {
+ pr_warn("instruction limit reached (%u NFP instructions)\n",
+ nfp_prog->prog_len);
nfp_prog->error = -ENOSPC;
return;
}
@@ -2463,6 +2465,8 @@ static int nfp_translate(struct nfp_prog *nfp_prog)
err = cb(nfp_prog, meta);
if (err)
return err;
+ if (nfp_prog->error)
+ return nfp_prog->error;
nfp_prog->n_translated++;
}