STRUCT OVS_ACTION_ADD_MPLS(9)

💅 struct ovs_action_add_mpls(9) — like, the Kernel API Manual bestie ✨

okay so bestie, we're deep in the kernel docs rn — this is the page for struct ovs_action_add_mpls(9), and no cap, it's the argument for the %OVS_ACTION_ATTR_ADD_MPLS action. tiny struct, big main character energy 🎀

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🦋 NAME 🦋

struct ovs_action_add_mpls — literally the argument for the %OVS_ACTION_ATTR_ADD_MPLS action. that's it, that's the vibe 💖

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✨ SYNOPSIS ✨

struct ovs_action_add_mpls {
    __be32 mpls_lse;
    __be16 mpls_ethertype;
    __u16 tun_flags;
 };

like yes, three whole members. she's compact. she's iconic. 🫶

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🌸 Members 🌸

• mpls_lse — the MPLS label stack entry to push. it's a __be32, so big-endian bestie, don't forget 💅
• mpls_ethertype — the ethertype to set in the encapsulating ethernet frame. (more on which values are allowed below, and trust, the list is short 👀)
• tun_flags — the MPLS tunnel attributes. a __u16 of pure vibe. ⭐

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🔥 Description 🔥

okay so this is the important part, listen up 📣 — the only values mpls_ethertype should ever be given are ETH_P_MPLS_UC and ETH_P_MPLS_MC. that's MPLS unicast and MPLS multicast respectively, iykyk 🌈

any other value? rejected. not even a little bit allowed. the kernel said no 💀

no cap, don't try to be creative with mpls_ethertype. creative = rejected. 🚫

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👑 SEE ALSO 👑

• Kernel file ./include/uapi/linux/openvswitch.h — struct ovs_header(9)
• enum ovs_datapath_attr(9)
• enum ovs_packet_attr(9)
• enum ovs_vport_type(9)
• enum ovs_vport_attr(9)
• enum ovs_vport_upcall_attr(9)
• enum ovs_frag_type(9)
• enum ovs_flow_attr(9)
• enum ovs_sample_attr(9)
• enum ovs_userspace_attr(9)
• struct ovs_action_push_mpls(9)
• struct ovs_action_push_vlan(9)
• enum ovs_ct_attr(9)
• enum ovs_nat_attr(9)
• struct ovs_action_push_eth(9)
• enum ovs_check_pkt_len_attr(9)
• enum ovs_psample_attr(9)
• enum ovs_action_attr(9)

like, the whole openvswitch.h friend group made it to the function 💜 go read them too, they're all slay.

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and that's the page, bestie! this one lives under ./include/uapi/linux, dated October 2026, and the header up top was struct ovs_action_add_mpls(9) from the Kernel API Manual — mwah, go push some MPLS labels responsibly 🧚‍♀️✨🎀