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f83e9cd645
Convert PPPoL2TP socket's getsockopt implementation to use the new getsockopt_iter callback with sockopt_t. Key changes: - Replace (char __user *optval, int __user *optlen) with sockopt_t *opt - Use opt->optlen for buffer length (input) and returned size (output) - Use copy_to_iter() instead of put_user()/copy_to_user() Acked-by: Stanislav Fomichev <sdf@fomichev.me> Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://patch.msgid.link/20260520-getsock_four-v3-4-b8c0b16b7780@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>