inet: add indirect call wrapper for getfrag() calls

UDP send path suffers from one indirect call to ip_generic_getfrag()

We can use INDIRECT_CALL_1() to avoid it.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Brian Vazquez <brianvv@google.com>
Link: https://patch.msgid.link/20241203173617.2595451-1-edumazet@google.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>