batadv_bla_tx(9)

💖 batadv_bla_tx(9) 💖

okay so bestie, welcome to the batadv_bla_tx(9) page from the Kernel API Manual — this one is all about checking packets going into the mesh, and it is genuinely giving kernel networking main character energy ✨

🌸 NAME 🌸

batadv_bla_tx — check packets going into the mesh

🦋 SYNOPSIS 🦋

       bool batadv_bla_tx (struct batadv_priv *bat_priv , struct sk_buff *skb ,
       unsigned short vid );

🎀 ARGUMENTS 🎀

• bat_priv — the bat priv with all the mesh interface information. Like, it has all the mesh interface info HQ vibes 💅
• skb — the frame to be checked. This is the packet bestie we are vibe-checking.
• vid — the VLAN ID of the frame. Important little detail, periodt.

🔥 DESCRIPTION 🔥

batadv_bla_tx checks if:

• a claim was received which has to be processed
• the frame is allowed on the mesh

in these cases, the skb is further handled by this function.

⚠️ Warning: This function may reallocate the skb data buffer via batadv_bla_process_claim/... Any pointer into the skb data (e.g. obtained from skb->data or eth_hdr) before this call must be considered invalid afterwards and has to be reacquired. Like fr fr, do not hold onto that pointer — it is giving stale the second this function does its thing 😭

⭐ RETURN ⭐

true if handled, otherwise it returns false and the caller shall further process the skb.

👑 SEE ALSO 👑

Kernel file ./net/batman-adv/bridge_loop_avoidance.c

• batadv_choose_claim(9)
• batadv_choose_backbone_gw(9)
• batadv_compare_backbone_gw(9)
• batadv_compare_claim(9)
• batadv_backbone_gw_release(9)
• batadv_backbone_gw_put(9)
• batadv_claim_release(9)
• batadv_claim_put(9)
• batadv_claim_hash_find(9)
• batadv_backbone_hash_find(9)
• batadv_bla_del_backbone_claims(9)
• batadv_bla_send_claim(9)
• batadv_bla_loopdetect_report(9)
• batadv_bla_get_backbone_gw(9)
• batadv_bla_update_own_backbone_gw(9)
• batadv_bla_answer_request(9)
• batadv_bla_send_request(9)
• batadv_bla_send_announce(9)
• batadv_bla_add_claim(9)
• batadv_bla_claim_get_backbone_gw(9)
• batadv_bla_del_claim(9)
• batadv_handle_announce(9)
• batadv_handle_request(9)
• batadv_handle_unclaim(9)
• batadv_handle_claim(9)
• batadv_check_claim_group(9)
• batadv_bla_process_claim(9)
• batadv_bla_purge_backbone_gw(9)
• batadv_bla_purge_claims(9)
• batadv_bla_update_orig_address(9)
• batadv_bla_send_loopdetect(9)
• batadv_bla_status_update(9)
• batadv_bla_periodic_work(9)
• batadv_bla_init(9)
• batadv_bla_check_duplist(9)
• batadv_bla_check_ucast_duplist(9)
• batadv_bla_check_bcast_duplist(9)
• batadv_bla_is_backbone_gw_orig(9)
• batadv_bla_is_backbone_gw(9)
• batadv_bla_free(9)
• batadv_bla_loopdetect_check(9)
• batadv_bla_rx(9)
• batadv_bla_claim_dump_entry(9)
• batadv_bla_claim_dump_bucket(9)
• batadv_bla_claim_dump(9)
• batadv_bla_backbone_dump_entry(9)
• batadv_bla_backbone_dump_bucket(9)
• batadv_bla_backbone_dump(9)
• batadv_bla_check_claim(9)

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xoxo, from ./net/batman-adv — October 2026 edition, page batadv_bla_tx(9) 🫶💖