Re: [PATCH v7 bpf-next 04/11] tcp: Add reuseport_migrate_sock() to select a new listener.

[Eric Dumazet]

On 5/21/21 8:20 PM, Kuniyuki Iwashima wrote:
> reuseport_migrate_sock() does the same check done in
> reuseport_listen_stop_sock(). If the reuseport group is capable of
> migration, reuseport_migrate_sock() selects a new listener by the child
> socket hash and increments the listener's sk_refcnt beforehand. Thus, if we
> fail in the migration, we have to decrement it later.
> 
> We will support migration by eBPF in the later commits.
> 
> Signed-off-by: Kuniyuki Iwashima <kuniyu@xxxxxxxxxxxx>
> Signed-off-by: Martin KaFai Lau <kafai@xxxxxx>
> ---
>  include/net/sock_reuseport.h |  3 ++
>  net/core/sock_reuseport.c    | 78 +++++++++++++++++++++++++++++-------
>  2 files changed, 67 insertions(+), 14 deletions(-)

Reviewed-by: Eric Dumazet <edumazet@xxxxxxxxxx>