net: cls_u32: be more strict about skip-sw flag
Return an error if user requested skip-sw and the underlaying hardware cannot handle tc offloads (or offloads are disabled). Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -457,10 +457,12 @@ static int u32_replace_hw_hnode(struct tcf_proto *tp,
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struct tc_to_netdev offload;
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int err;
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if (!tc_should_offload(dev, flags))
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return tc_skip_sw(flags) ? -EINVAL : 0;
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offload.type = TC_SETUP_CLSU32;
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offload.cls_u32 = &u32_offload;
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if (tc_should_offload(dev, flags)) {
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offload.cls_u32->command = TC_CLSU32_NEW_HNODE;
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offload.cls_u32->hnode.divisor = h->divisor;
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offload.cls_u32->hnode.handle = h->handle;
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@ -470,7 +472,6 @@ static int u32_replace_hw_hnode(struct tcf_proto *tp,
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tp->protocol, &offload);
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if (tc_skip_sw(flags))
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return err;
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}
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return 0;
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}
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