nfp: bpf: add support for legacy redirect action
Data path has redirect support so expressing redirect to the port frame came from is a trivial matter of setting the right result code. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -60,6 +60,7 @@ enum static_regs {
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enum nfp_bpf_action_type {
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NN_ACT_TC_DROP,
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NN_ACT_TC_REDIR,
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};
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/* Software register representation, hardware encoding in asm.h */
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@ -1440,6 +1440,7 @@ static void nfp_outro_tc_legacy(struct nfp_prog *nfp_prog)
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{
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const u8 act2code[] = {
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[NN_ACT_TC_DROP] = 0x22,
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[NN_ACT_TC_REDIR] = 0x24
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};
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/* Target for aborts */
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nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog);
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@ -1468,6 +1469,7 @@ static void nfp_outro(struct nfp_prog *nfp_prog)
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{
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switch (nfp_prog->act) {
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case NN_ACT_TC_DROP:
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case NN_ACT_TC_REDIR:
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nfp_outro_tc_legacy(nfp_prog);
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break;
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}
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@ -123,6 +123,10 @@ nfp_net_bpf_get_act(struct nfp_net *nn, struct tc_cls_bpf_offload *cls_bpf)
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list_for_each_entry(a, &actions, list) {
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if (is_tcf_gact_shot(a))
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return NN_ACT_TC_DROP;
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if (is_tcf_mirred_redirect(a) &&
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tcf_mirred_ifindex(a) == nn->netdev->ifindex)
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return NN_ACT_TC_REDIR;
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}
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return -ENOTSUPP;
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