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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>
This commit is contained in:
Quentin Monnet 2018-01-23 11:22:52 -08:00 committed by David S. Miller
parent 521504640f
commit 728461f202
1 changed files with 28 additions and 7 deletions
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35
drivers/net/netdevsim/bpf.c
View File

@ -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 (!ns->bpf_tc_accept)
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 (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);