net/hookers/hookers.c:194:44-45: WARNING: Use ARRAY_SIZE

 Use ARRAY_SIZE instead of dividing sizeof array with sizeof an element

Semantic patch information:
 This makes an effort to find cases where ARRAY_SIZE can be used such as
 where there is a division of sizeof the array by the sizeof its first
 element or by any indexed element or the element type. It replaces the
 division of the two sizeofs by ARRAY_SIZE.

Generated by: scripts/coccinelle/misc/array_size.cocci

[ caspar: remove redundant parentheses ]

Fixes: 3c74cfbb ("net: kernel hookers service for toa module")
CC: George Zhang <georgezhang@linux.alibaba.com>
Signed-off-by: Nkbuild test robot <lkp@intel.com>
Reviewed-by: NCaspar Zhang <caspar@linux.alibaba.com>

LVS fullnat will replace network traffic's source ip with its local ip,
and thus the backend servers cannot obtain the real client ip.

To solve this, LVS has introduced the tcp option address (TOA) to store
the essential ip address information in the last tcp ack packet of the
3-way handshake, and the backend servers need to retrieve it from the
packet header.

In this patch, we have introduced the sk_toa_data member in the sock
structure to hold the TOA information. There used to be an in-tree
module for TOA managing, whereas it has now been maintained as an
standalone module.

In this case, the toa module should register its hook function(s) using
the provided interfaces in the hookers module.

TOA in sock structure:

	__be32 sk_toa_data[16];

The hookers module only provides the sk_toa_data placeholder, and the
toa module can use this variable through the layout it needs.

Hook interfaces:

The hookers module replaces the kernel's syn_recv_sock and getname
handler with a stub that chains the toa module's hook function(s) to the
original handling function. The hookers module allows hook functions to
be installed and uninstalled in any order.

toa module:

The external toa module will be provided in separate RPM package.

[xuyu@linux.alibaba.com: amend commit log]
Signed-off-by: NGeorge Zhang <georgezhang@linux.alibaba.com>
Signed-off-by: NXu Yu <xuyu@linux.alibaba.com>
Reviewed-by: NCaspar Zhang <caspar@linux.alibaba.com>