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ipv4: Create and use route lookup helpers.

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The idea here is this minimizes the number of places one has to edit
in order to make changes to how flows are defined and used.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2011-03-12 00:00:52 -05:00
parent 1561747ddf
commit 78fbfd8a65
23 changed files with 204 additions and 324 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/net/pptp.c
+18 -27
View File
@@ -189,18 +189,14 @@ static int pptp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
if (sk_pppox(po)->sk_state & PPPOX_DEAD)
goto tx_error;
{
struct flowi fl = { .oif = 0,
.nl_u = {
.ip4_u = {
.daddr = opt->dst_addr.sin_addr.s_addr,
.saddr = opt->src_addr.sin_addr.s_addr,
.tos = RT_TOS(0) } },
.proto = IPPROTO_GRE };
rt = ip_route_output_key(&init_net, &fl);
if (IS_ERR(rt))
goto tx_error;
}
rt = ip_route_output_ports(&init_net, NULL,
opt->dst_addr.sin_addr.s_addr,
opt->src_addr.sin_addr.s_addr,
0, 0, IPPROTO_GRE,
RT_TOS(0), 0);
if (IS_ERR(rt))
goto tx_error;
tdev = rt->dst.dev;
max_headroom = LL_RESERVED_SPACE(tdev) + sizeof(*iph) + sizeof(*hdr) + 2;
@@ -467,22 +463,17 @@ static int pptp_connect(struct socket *sock, struct sockaddr *uservaddr,
po->chan.private = sk;
po->chan.ops = &pptp_chan_ops;
{
struct flowi fl = {
.nl_u = {
.ip4_u = {
.daddr = opt->dst_addr.sin_addr.s_addr,
.saddr = opt->src_addr.sin_addr.s_addr,
.tos = RT_CONN_FLAGS(sk) } },
.proto = IPPROTO_GRE };
security_sk_classify_flow(sk, &fl);
rt = ip_route_output_key(&init_net, &fl);
if (IS_ERR(rt)) {
error = -EHOSTUNREACH;
goto end;
}
sk_setup_caps(sk, &rt->dst);
rt = ip_route_output_ports(&init_net, sk,
opt->dst_addr.sin_addr.s_addr,
opt->src_addr.sin_addr.s_addr,
0, 0,
IPPROTO_GRE, RT_CONN_FLAGS(sk), 0);
if (IS_ERR(rt)) {
error = -EHOSTUNREACH;
goto end;
}
sk_setup_caps(sk, &rt->dst);
po->chan.mtu = dst_mtu(&rt->dst);
if (!po->chan.mtu)
po->chan.mtu = PPP_MTU;