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Kirill Smelkov
linux
Commits
d0da720f
Commit
d0da720f
authored
Jul 11, 2012
by
David S. Miller
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Plain Diff
ipv4: Pull redirect instantiation out into a helper function.
Signed-off-by:
David S. Miller
<
davem@davemloft.net
>
parent
d3351b75
Changes
1
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1 changed file
with
22 additions
and
15 deletions
+22
-15
net/ipv4/route.c
net/ipv4/route.c
+22
-15
No files found.
net/ipv4/route.c
View file @
d0da720f
...
...
@@ -1271,6 +1271,26 @@ static void rt_del(unsigned int hash, struct rtable *rt)
spin_unlock_bh
(
rt_hash_lock_addr
(
hash
));
}
static
void
ip_do_redirect
(
struct
rtable
*
rt
,
__be32
old_gw
,
__be32
new_gw
)
{
struct
neighbour
*
n
;
if
(
rt
->
rt_gateway
!=
old_gw
)
return
;
n
=
ipv4_neigh_lookup
(
&
rt
->
dst
,
NULL
,
&
new_gw
);
if
(
n
)
{
if
(
!
(
n
->
nud_state
&
NUD_VALID
))
{
neigh_event_send
(
n
,
NULL
);
}
else
{
rt
->
rt_gateway
=
new_gw
;
rt
->
rt_flags
|=
RTCF_REDIRECTED
;
call_netevent_notifiers
(
NETEVENT_NEIGH_UPDATE
,
n
);
}
neigh_release
(
n
);
}
}
/* called in rcu_read_lock() section */
void
ip_rt_redirect
(
__be32
old_gw
,
__be32
daddr
,
__be32
new_gw
,
__be32
saddr
,
struct
net_device
*
dev
)
...
...
@@ -1311,8 +1331,6 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
rthp
=
&
rt_hash_table
[
hash
].
chain
;
while
((
rt
=
rcu_dereference
(
*
rthp
))
!=
NULL
)
{
struct
neighbour
*
n
;
rthp
=
&
rt
->
dst
.
rt_next
;
if
(
rt
->
rt_key_dst
!=
daddr
||
...
...
@@ -1322,21 +1340,10 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
rt_is_expired
(
rt
)
||
!
net_eq
(
dev_net
(
rt
->
dst
.
dev
),
net
)
||
rt
->
dst
.
error
||
rt
->
dst
.
dev
!=
dev
||
rt
->
rt_gateway
!=
old_gw
)
rt
->
dst
.
dev
!=
dev
)
continue
;
n
=
ipv4_neigh_lookup
(
&
rt
->
dst
,
NULL
,
&
new_gw
);
if
(
n
)
{
if
(
!
(
n
->
nud_state
&
NUD_VALID
))
{
neigh_event_send
(
n
,
NULL
);
}
else
{
rt
->
rt_gateway
=
new_gw
;
rt
->
rt_flags
|=
RTCF_REDIRECTED
;
call_netevent_notifiers
(
NETEVENT_NEIGH_UPDATE
,
n
);
}
neigh_release
(
n
);
}
ip_do_redirect
(
rt
,
old_gw
,
new_gw
);
}
}
}
...
...
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