Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.16 43/48] net : sched: cls_api: deal with egdev path only if needed | Date | Sat, 9 Jun 2018 17:29:55 +0200 |
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4.16-stable review patch. If anyone has any objections, please let me know.
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From: Or Gerlitz <ogerlitz@mellanox.com>
[ Upstream commit f8f4bef322e4600c5856911c7a632c0e3da920d6 ]
When dealing with ingress rule on a netdev, if we did fine through the conventional path, there's no need to continue into the egdev route, and we can stop right there.
Not doing so may cause a 2nd rule to be added by the cls api layer with the ingress being the egdev.
For example, under sriov switchdev scheme, a user rule of VFR A --> VFR B will end up with two HW rules (1) VF A --> VF B and (2) uplink --> VF B
Fixes: 208c0f4b5237 ('net: sched: use tc_setup_cb_call to call per-block callbacks') Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/sched/cls_api.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -1587,7 +1587,7 @@ int tc_setup_cb_call(struct tcf_block *b return ret; ok_count = ret; - if (!exts) + if (!exts || ok_count) return ok_count; ret = tc_exts_setup_cb_egdev_call(exts, type, type_data, err_stop); if (ret < 0)
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