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authorQuentin Monnet <quentin.monnet@netronome.com>2018-01-23 22:22:52 +0300
committerDavid S. Miller <davem@davemloft.net>2018-01-24 04:24:31 +0300
commit728461f202c316798e3300674006dce18cfdfcea (patch)
treef9c2803a531a755c5348ec2d3c0c3b738fd3b15e /drivers/net/netdevsim/bpf.c
parent521504640f9ebec384a9c3ecd5e6de82fec6d928 (diff)
downloadlinux-728461f202c316798e3300674006dce18cfdfcea.tar.xz
netdevsim: add extack support for TC eBPF offload
Use the recently added extack support for TC eBPF filters in netdevsim. Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/netdevsim/bpf.c')
-rw-r--r--drivers/net/netdevsim/bpf.c35
1 files changed, 28 insertions, 7 deletions
diff --git a/drivers/net/netdevsim/bpf.c b/drivers/net/netdevsim/bpf.c
index b3851bbefad3..940c63eeebf9 100644
--- a/drivers/net/netdevsim/bpf.c
+++ b/drivers/net/netdevsim/bpf.c
@@ -123,17 +123,35 @@ int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
struct netdevsim *ns = cb_priv;
struct bpf_prog *oldprog;
- if (type != TC_SETUP_CLSBPF ||
- !tc_can_offload(ns->netdev) ||
- cls_bpf->common.protocol != htons(ETH_P_ALL) ||
- cls_bpf->common.chain_index)
+ if (type != TC_SETUP_CLSBPF) {
+ NSIM_EA(cls_bpf->common.extack,
+ "only offload of BPF classifiers supported");
return -EOPNOTSUPP;
+ }
+
+ if (!tc_can_offload_extack(ns->netdev, cls_bpf->common.extack))
+ return -EOPNOTSUPP;
+
+ if (cls_bpf->common.protocol != htons(ETH_P_ALL)) {
+ NSIM_EA(cls_bpf->common.extack,
+ "only ETH_P_ALL supported as filter protocol");
+ return -EOPNOTSUPP;
+ }
- if (!ns->bpf_tc_accept)
+ if (cls_bpf->common.chain_index)
return -EOPNOTSUPP;
+
+ if (!ns->bpf_tc_accept) {
+ NSIM_EA(cls_bpf->common.extack,
+ "netdevsim configured to reject BPF TC offload");
+ return -EOPNOTSUPP;
+ }
/* Note: progs without skip_sw will probably not be dev bound */
- if (prog && !prog->aux->offload && !ns->bpf_tc_non_bound_accept)
+ if (prog && !prog->aux->offload && !ns->bpf_tc_non_bound_accept) {
+ NSIM_EA(cls_bpf->common.extack,
+ "netdevsim configured to reject unbound programs");
return -EOPNOTSUPP;
+ }
if (cls_bpf->command != TC_CLSBPF_OFFLOAD)
return -EOPNOTSUPP;
@@ -145,8 +163,11 @@ int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
oldprog = NULL;
if (!cls_bpf->prog)
return 0;
- if (ns->bpf_offloaded)
+ if (ns->bpf_offloaded) {
+ NSIM_EA(cls_bpf->common.extack,
+ "driver and netdev offload states mismatch");
return -EBUSY;
+ }
}
return nsim_bpf_offload(ns, cls_bpf->prog, oldprog);