net: turn sk_peer_pid into an array indexed by pid type

Currently only the struct pid of the thread-group leader is recorded
for a socket's peer. To make room for the struct pid of the thread that
called connect(), listen() or socketpair() turn sk_peer_pid into an
array indexed by pid type. All users, including bluetooth and the
coredump socket, keep using the PIDTYPE_TGID slot.

Nothing fills the PIDTYPE_PID slot yet. No functional changes.

Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@futurfusion.io>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Signed-off-by: Andrew Halaney <andrew@amutable.com>
Link: https://patch.msgid.link/20261005-work-unix-passpidfd-v4-5-350183b6e02a@amutable.com
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>

0 files changed, 0 insertions, 0 deletions