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| author | Guillaume Nault <gnault@redhat.com> | 2020-10-03 00:44:31 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-10-04 02:28:45 +0200 |
| commit | a45294af9e96a3e060b6272fa7cd2c4b196de335 (patch) | |
| tree | 4c9ab23ca1d039b508ce4358df7dfed6561757de /net/sched/act_mpls.c | |
| parent | net/sched: act_vlan: Add {POP,PUSH}_ETH actions (diff) | |
| download | linux-a45294af9e96a3e060b6272fa7cd2c4b196de335.tar.xz linux-a45294af9e96a3e060b6272fa7cd2c4b196de335.zip | |
net/sched: act_mpls: Add action to push MPLS LSE before Ethernet header
Define the MAC_PUSH action which pushes an MPLS LSE before the mac
header (instead of between the mac and the network headers as the
plain PUSH action does).
The only special case is when the skb has an offloaded VLAN. In that
case, it has to be inlined before pushing the MPLS header.
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_mpls.c')
| -rw-r--r-- | net/sched/act_mpls.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/net/sched/act_mpls.c b/net/sched/act_mpls.c index 8118e2640979..bb6b715636db 100644 --- a/net/sched/act_mpls.c +++ b/net/sched/act_mpls.c @@ -87,6 +87,23 @@ static int tcf_mpls_act(struct sk_buff *skb, const struct tc_action *a, skb->dev && skb->dev->type == ARPHRD_ETHER)) goto drop; break; + case TCA_MPLS_ACT_MAC_PUSH: + if (skb_vlan_tag_present(skb)) { + if (__vlan_insert_inner_tag(skb, skb->vlan_proto, + skb_vlan_tag_get(skb), + ETH_HLEN) < 0) + goto drop; + + skb->protocol = skb->vlan_proto; + __vlan_hwaccel_clear_tag(skb); + } + + new_lse = tcf_mpls_get_lse(NULL, p, mac_len || + !eth_p_mpls(skb->protocol)); + + if (skb_mpls_push(skb, new_lse, p->tcfm_proto, 0, false)) + goto drop; + break; case TCA_MPLS_ACT_MODIFY: new_lse = tcf_mpls_get_lse(mpls_hdr(skb), p, false); if (skb_mpls_update_lse(skb, new_lse)) @@ -188,6 +205,7 @@ static int tcf_mpls_init(struct net *net, struct nlattr *nla, } break; case TCA_MPLS_ACT_PUSH: + case TCA_MPLS_ACT_MAC_PUSH: if (!tb[TCA_MPLS_LABEL]) { NL_SET_ERR_MSG_MOD(extack, "Label is required for MPLS push"); return -EINVAL; |