This implements SOCK_DESTROY for TCP sockets. It causes all
blocking calls on the socket to fail fast with ECONNABORTED and
causes a protocol close of the socket. It informs the other end
of the connection by sending a RST, i.e., initiating a TCP ABORT
as per RFC 793. ECONNABORTED was chosen for consistency with
FreeBSD.

[Backport of net-next c1e64e298b8cad309091b95d8436a0255c84f54a]

Change-Id: I29c71cc0d72995bf245c36bcebfa8721739cc445
Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Reviewed-on: http://git-master/r/1123595


GVS: Gerrit_Virtual_Submit
Reviewed-by: Om Prakash Singh <omp@nvidia.com>
Reviewed-by: Bhadram Varka <vbhadram@nvidia.com>
Tested-by: Bhadram Varka <vbhadram@nvidia.com>
Reviewed-by: Michael Hsu <mhsu@nvidia.com>
Reviewed-by: Ashutosh Jha <ajha@nvidia.com>
(cherry picked from commit 2e025129df6473432c1c5b32cef61ad5811677aa)
Reviewed-on: http://git-master/r/1127381


Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>