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4e1916dec9
Currently, the existing macro for_each_link_data() uses sdata_dereference() which requires the wiphy lock. This lock cannot be used in atomic or RCU read-side contexts, such as in the RX path. Introduce a new macro, for_each_link_data_rcu(), that iterates over link of sdata using rcu_dereference(), making it safe to use in RCU contexts. This allows callers to access link data without requiring the wiphy lock. The macro takes into account the vif.valid_links bitmap and ensures only valid links are accessed safely. Callers are responsible for ensuring that rcu_read_lock() is held when using this macro. Signed-off-by: Maharaja Kennadyrajan <maharaja.kennadyrajan@oss.qualcomm.com> Link: https://patch.msgid.link/20250718060837.59371-3-maharaja.kennadyrajan@oss.qualcomm.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>