linux-toradex.git/include/net/ip_fib.h, branch v3.2.13-rt22

ipv4: Call fib_select_default() only when actually necessary.

2011-04-14T22:05:22+00:00

fib_select_default() is a complete NOP, and completely pointless
to invoke, when we have no more than 1 default route installed.

And this is far and away the common case.

So remember how many prefixlen==0 routes we have in the routing
table, and elide the call when we have no more than one of those.

This cuts output route creation time by 157 cycles on Niagara2+.

In order to add the new int to fib_table, we have to correct the type
of ->tb_data[] to unsigned long, otherwise the private area will be
unaligned on 64-bit systems.

Signed-off-by: David S. Miller 
Reviewed-by: Eric Dumazet

fib_validate_source(): pass sk_buff instead of mark

2011-04-11T01:50:59+00:00

This makes sk_buff available for other use in fib_validate_source().

Signed-off-by: Michael Smith 
Signed-off-by: David S. Miller

ipv4: Fix nexthop caching wrt. scoping.

2011-03-25T01:06:47+00:00

Move the scope value out of the fib alias entries and into fib_info,
so that we always use the correct scope when recomputing the nexthop
cached source address.

Reported-by: Julian Anastasov 
Signed-off-by: David S. Miller

ipv4: Invalidate nexthop cache nh_saddr more correctly.

2011-03-25T00:42:21+00:00

Any operation that:

1) Brings up an interface
2) Adds an IP address to an interface
3) Deletes an IP address from an interface

can potentially invalidate the nh_saddr value, requiring
it to be recomputed.

Perform the recomputation lazily using a generation ID.

Reported-by: Julian Anastasov 
Signed-off-by: David S. Miller

ipv4: Pass ipv4 flow objects into fib_lookup() paths.

2011-03-12T23:08:47+00:00

To start doing these conversions, we need to add some temporary
flow4_* macros which will eventually go away when all the protocol
code paths are changed to work on AF specific flowi objects.

Signed-off-by: David S. Miller

ipv4: Kill flowi arg to fib_select_multipath()

2011-03-11T01:03:45+00:00

Completely unused.

Signed-off-by: David S. Miller

ipv4: Fix scope value used in route src-address caching.

2011-03-08T19:03:21+00:00

We have to use cfg->fc_scope not the final nh_scope value.

Reported-by: Julian Anastasov 
Signed-off-by: David S. Miller

ipv4: Cache source address in nexthop entries.

2011-03-08T04:54:48+00:00

When doing output route lookups, we have to select the source address
if the user has not specified an explicit one.

First, if the route has an explicit preferred source address
specified, then we use that.

Otherwise we search the route's outgoing interface for a suitable
address.

This search can be precomputed and cached at route insertion time.

The only missing part is that we have to refresh this precomputed
value any time addresses are added or removed from the interface, and
this is accomplished by fib_update_nh_saddrs().

Signed-off-by: David S. Miller

ipv4: Use const'ify fib_result deep in the route call chains.

2011-02-17T23:54:42+00:00

The only troublesome bit here is __mkroute_output which wants
to override res->fi and res->type, compute those in local
variables instead.

Signed-off-by: David S. Miller

ipv4: Mark fib_combine_itag()'s 'res' arg as const.

2011-02-17T23:52:59+00:00

Signed-off-by: David S. Miller