From: Jakub Kicinski Date: Wed, 9 Jul 2025 01:05:27 +0000 (-0700) Subject: Merge branch 'af_unix-introduce-so_inq-scm_inq' X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=042ef6aafd3fa22a0398c1c25c2dc742cba78eed;p=thirdparty%2Fkernel%2Fstable.git Merge branch 'af_unix-introduce-so_inq-scm_inq' Kuniyuki Iwashima says: ==================== af_unix: Introduce SO_INQ & SCM_INQ. We have an application that uses almost the same code for TCP and AF_UNIX (SOCK_STREAM). The application uses TCP_INQ for TCP, but AF_UNIX doesn't have it and requires an extra syscall, ioctl(SIOCINQ) or getsockopt(SO_MEMINFO) as an alternative. Also, ioctl(SIOCINQ) for AF_UNIX SOCK_STREAM is more expensive because it needs to iterate all skb in the receive queue. This series adds a cached field for SIOCINQ to speed it up and introduce SO_INQ, the generic version of TCP_INQ to get the queue length as cmsg in each recvmsg(). ==================== Link: https://patch.msgid.link/20250702223606.1054680-1-kuniyu@google.com Signed-off-by: Jakub Kicinski --- 042ef6aafd3fa22a0398c1c25c2dc742cba78eed