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authorLaszlo Attila Toth <panther@balabit.hu>2007-12-05 02:28:46 -0500
committerDavid S. Miller <davem@davemloft.net>2008-01-28 17:55:56 -0500
commit0553811612a6178365f3b062c30234913b218a96 (patch)
tree81e4fa4f6d0a8beeb7ace09e7e4cb2375c9bfea1 /net/ipv4/fib_frontend.c
parent0265ab44bacc1a1e0e3f5873d8ca2d5a29e33db2 (diff)
[IPV4]: Add inet_dev_addr_type()
Address type search can be limited to an interface by inet_dev_addr_type function. Signed-off-by: Laszlo Attila Toth <panther@balabit.hu> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/fib_frontend.c')
-rw-r--r--net/ipv4/fib_frontend.c21
1 files changed, 19 insertions, 2 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index e02aba5fa136..d90b42f3630c 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -155,7 +155,12 @@ out:
155 return dev; 155 return dev;
156} 156}
157 157
158unsigned inet_addr_type(__be32 addr) 158/*
159 * Find address type as if only "dev" was present in the system. If
160 * on_dev is NULL then all interfaces are taken into consideration.
161 */
162static inline unsigned __inet_dev_addr_type(const struct net_device *dev,
163 __be32 addr)
159{ 164{
160 struct flowi fl = { .nl_u = { .ip4_u = { .daddr = addr } } }; 165 struct flowi fl = { .nl_u = { .ip4_u = { .daddr = addr } } };
161 struct fib_result res; 166 struct fib_result res;
@@ -175,13 +180,24 @@ unsigned inet_addr_type(__be32 addr)
175 if (local_table) { 180 if (local_table) {
176 ret = RTN_UNICAST; 181 ret = RTN_UNICAST;
177 if (!local_table->tb_lookup(local_table, &fl, &res)) { 182 if (!local_table->tb_lookup(local_table, &fl, &res)) {
178 ret = res.type; 183 if (!dev || dev == res.fi->fib_dev)
184 ret = res.type;
179 fib_res_put(&res); 185 fib_res_put(&res);
180 } 186 }
181 } 187 }
182 return ret; 188 return ret;
183} 189}
184 190
191unsigned int inet_addr_type(__be32 addr)
192{
193 return __inet_dev_addr_type(NULL, addr);
194}
195
196unsigned int inet_dev_addr_type(const struct net_device *dev, __be32 addr)
197{
198 return __inet_dev_addr_type(dev, addr);
199}
200
185/* Given (packet source, input interface) and optional (dst, oif, tos): 201/* Given (packet source, input interface) and optional (dst, oif, tos):
186 - (main) check, that source is valid i.e. not broadcast or our local 202 - (main) check, that source is valid i.e. not broadcast or our local
187 address. 203 address.
@@ -940,4 +956,5 @@ void __init ip_fib_init(void)
940} 956}
941 957
942EXPORT_SYMBOL(inet_addr_type); 958EXPORT_SYMBOL(inet_addr_type);
959EXPORT_SYMBOL(inet_dev_addr_type);
943EXPORT_SYMBOL(ip_dev_find); 960EXPORT_SYMBOL(ip_dev_find);