STRUCT EFX_TC_ACTION_SET(9)

💖 struct efx_tc_action_set(9) 💖

okay so bestie, this page is straight from the Kernel API Manual and it’s all about struct efx_tc_action_set. no cap, it’s giving main-character data structure energy. let’s get into it. 💅

🎀 NAME 🎀

struct efx_tc_action_set — collection of tc action fields. literally what it says on the tin, bestie. it’s the struct that gathers all those tc action fields together, and honestly? iconic. 💖

✨ SYNOPSIS ✨

okay so here’s the struct definition in all its glory — copy it exactly, no editing, iykyk:

       struct efx_tc_action_set {
           u16 vlan_push:2;
           u16 vlan_pop:2;
           u16 decap:1;
           u16 do_nat:1;
           u16 do_ttl_dec:1;
           u16 deliver:1;
           __be16 vlan_tci[2];
           __be16 vlan_proto[2];
           struct efx_tc_counter_index *count;
           struct efx_tc_encap_action *encap_md;
           struct list_head encap_user;
           struct efx_tc_action_set_list *user;
           struct list_head count_user;
           u32 dest_mport;
           struct efx_tc_mac_pedit_action *src_mac;
           struct efx_tc_mac_pedit_action *dst_mac;
           u32 fw_id;
           struct list_head list;
        };

💅 Members 💅

• vlan_push — the number of vlan headers to push. periodt. 🦋
• vlan_pop — the number of vlan headers to pop. slay. ✨
• decap — used to indicate a tunnel header decapsulation should take place. it’s giving “bye, tunnel header” energy. 💀
• do_nat — perform NAT/NPT with values returned by conntrack match. no cap, conntrack match said what it said. 🔥
• do_ttl_dec — used to indicate IP TTL / Hop Limit should be decremented. lowkey important, don’t skip. ⭐
• deliver — used to indicate a deliver action should take place. yes bestie, delivery. 🎀
• vlan_tci — tci fields for vlan push actions. plural, two of them. 🫶
• vlan_proto — ethernet types for vlan push actions. also plural. 🌸
• count — counter mapping. mapping? yes. counter mapping. 💅
• encap_md — encap entry in tc_encap_ht table. say hi to the table. ✨
• encap_user — linked list of encap users (encap_md->users). the whole user-list vibe. 🧚
• user — owning action-set-list. Only populated if encap_md is; used by efx_tc_update_encap fallback handling. 💜
• count_user — linked list of counter users (counter->users). same energy. 🍓
• dest_mport — destination mport. that’s it. mport destination. 🌈
• src_mac — source mac entry in tc_mac_ht table. mac entry, source flavored. 👑
• dst_mac — destination mac entry in tc_mac_ht table. destination flavored mac entry. 🦋
• fw_id — index of this entry in firmware actions table. index realness. 💖
• list — linked list of tc actions. the list of lists. 🎀

👀 SEE ALSO 👀

go look at these if you’re obsessed:

• Kernel file ./drivers/net/ethernet/sfc/tc.h struct efx_tc_mac_pedit_action(9), enum efx_tc_em_pseudo_type(9), struct efx_tc_state(9).

made with 💖 from ./drivers/net/ethernet/sfc, dated October 2026, and the footer is still living its best life as struct efx_tc_action_set(9). periodt. 🎀