The firmware host-command dispatch rb_iwlwifi_send_hcmd() was implemented in
commit b22fa7e24c but the definition was later lost from linux_port.c while the
Rust extern decl + call sites (src/mld/mod.rs) remained -> 'undefined reference
to rb_iwlwifi_send_hcmd' at link (cook failed; cargo check passed since it does
not link). Restored the function verbatim from b22fa7e24c; all its helpers
(rb_iwlwifi_require_transport, rb_iwlwifi_full_init_locked, iwl_pcie_send_cmd,
rb_iwl_cmd_hdr, rb_iwlwifi_transport_lock/cmd_cookie) still exist in the current
linux_port.c. Verified: linux_port.c compiles and now exports rb_iwlwifi_send_hcmd (T).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
vasilito
0114504158