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Tushar Vyavahare
0fe61052ac
UMEM teardown currently recomputes the munmap() length from frame geometry, shared-UMEM adjustment, and hugepage rounding. This duplicates setup-time logic in cleanup and relies on re-deriving the mapping size instead of using the size originally established for the mapping. Store the final mapping length in xsk_umem_info as mmap_size when the UMEM mapping is created, and use that value during teardown. Also join the RX worker thread before cleanup in the single-thread path. This establishes synchronization before reading umem->mmap_size in teardown and avoids a potential visibility race. This removes duplicated size arithmetic in cleanup and makes munmap() use the canonical mapping size recorded at setup time. Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com> Signed-off-by: Tushar Vyavahare <tushar.vyavahare@intel.com> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Link: https://patch.msgid.link/20260608130938.958793-5-tushar.vyavahare@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>