summaryrefslogtreecommitdiff
path: root/net/ipv4/fib_frontend.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/ipv4/fib_frontend.c')
-rw-r--r--net/ipv4/fib_frontend.c121
1 files changed, 66 insertions, 55 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 4a69a957872..b05c23b05a9 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -225,30 +225,33 @@ EXPORT_SYMBOL(inet_addr_type);
unsigned int inet_dev_addr_type(struct net *net, const struct net_device *dev,
__be32 addr)
{
- return __inet_dev_addr_type(net, dev, addr);
+ return __inet_dev_addr_type(net, dev, addr);
}
EXPORT_SYMBOL(inet_dev_addr_type);
/* Given (packet source, input interface) and optional (dst, oif, tos):
- - (main) check, that source is valid i.e. not broadcast or our local
- address.
- - figure out what "logical" interface this packet arrived
- and calculate "specific destination" address.
- - check, that packet arrived from expected physical interface.
+ * - (main) check, that source is valid i.e. not broadcast or our local
+ * address.
+ * - figure out what "logical" interface this packet arrived
+ * and calculate "specific destination" address.
+ * - check, that packet arrived from expected physical interface.
*/
-
int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif,
struct net_device *dev, __be32 *spec_dst,
u32 *itag, u32 mark)
{
struct in_device *in_dev;
- struct flowi fl = { .nl_u = { .ip4_u =
- { .daddr = src,
- .saddr = dst,
- .tos = tos } },
- .mark = mark,
- .iif = oif };
-
+ struct flowi fl = {
+ .nl_u = {
+ .ip4_u = {
+ .daddr = src,
+ .saddr = dst,
+ .tos = tos
+ }
+ },
+ .mark = mark,
+ .iif = oif
+ };
struct fib_result res;
int no_addr, rpf, accept_local;
bool dev_match;
@@ -477,9 +480,9 @@ static int rtentry_to_fib_config(struct net *net, int cmd, struct rtentry *rt,
}
/*
- * Handle IP routing ioctl calls. These are used to manipulate the routing tables
+ * Handle IP routing ioctl calls.
+ * These are used to manipulate the routing tables
*/
-
int ip_rt_ioctl(struct net *net, unsigned int cmd, void __user *arg)
{
struct fib_config cfg;
@@ -523,7 +526,7 @@ int ip_rt_ioctl(struct net *net, unsigned int cmd, void __user *arg)
return -EINVAL;
}
-const struct nla_policy rtm_ipv4_policy[RTA_MAX+1] = {
+const struct nla_policy rtm_ipv4_policy[RTA_MAX + 1] = {
[RTA_DST] = { .type = NLA_U32 },
[RTA_SRC] = { .type = NLA_U32 },
[RTA_IIF] = { .type = NLA_U32 },
@@ -537,7 +540,7 @@ const struct nla_policy rtm_ipv4_policy[RTA_MAX+1] = {
};
static int rtm_to_fib_config(struct net *net, struct sk_buff *skb,
- struct nlmsghdr *nlh, struct fib_config *cfg)
+ struct nlmsghdr *nlh, struct fib_config *cfg)
{
struct nlattr *attr;
int err, remaining;
@@ -692,12 +695,11 @@ out:
}
/* Prepare and feed intra-kernel routing request.
- Really, it should be netlink message, but :-( netlink
- can be not configured, so that we feed it directly
- to fib engine. It is legal, because all events occur
- only when netlink is already locked.
+ * Really, it should be netlink message, but :-( netlink
+ * can be not configured, so that we feed it directly
+ * to fib engine. It is legal, because all events occur
+ * only when netlink is already locked.
*/
-
static void fib_magic(int cmd, int type, __be32 dst, int dst_len, struct in_ifaddr *ifa)
{
struct net *net = dev_net(ifa->ifa_dev->dev);
@@ -743,9 +745,9 @@ void fib_add_ifaddr(struct in_ifaddr *ifa)
struct in_ifaddr *prim = ifa;
__be32 mask = ifa->ifa_mask;
__be32 addr = ifa->ifa_local;
- __be32 prefix = ifa->ifa_address&mask;
+ __be32 prefix = ifa->ifa_address & mask;
- if (ifa->ifa_flags&IFA_F_SECONDARY) {
+ if (ifa->ifa_flags & IFA_F_SECONDARY) {
prim = inet_ifa_byprefix(in_dev, prefix, mask);
if (prim == NULL) {
printk(KERN_WARNING "fib_add_ifaddr: bug: prim == NULL\n");
@@ -755,22 +757,24 @@ void fib_add_ifaddr(struct in_ifaddr *ifa)
fib_magic(RTM_NEWROUTE, RTN_LOCAL, addr, 32, prim);
- if (!(dev->flags&IFF_UP))
+ if (!(dev->flags & IFF_UP))
return;
/* Add broadcast address, if it is explicitly assigned. */
if (ifa->ifa_broadcast && ifa->ifa_broadcast != htonl(0xFFFFFFFF))
fib_magic(RTM_NEWROUTE, RTN_BROADCAST, ifa->ifa_broadcast, 32, prim);
- if (!ipv4_is_zeronet(prefix) && !(ifa->ifa_flags&IFA_F_SECONDARY) &&
+ if (!ipv4_is_zeronet(prefix) && !(ifa->ifa_flags & IFA_F_SECONDARY) &&
(prefix != addr || ifa->ifa_prefixlen < 32)) {
- fib_magic(RTM_NEWROUTE, dev->flags&IFF_LOOPBACK ? RTN_LOCAL :
- RTN_UNICAST, prefix, ifa->ifa_prefixlen, prim);
+ fib_magic(RTM_NEWROUTE,
+ dev->flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST,
+ prefix, ifa->ifa_prefixlen, prim);
/* Add network specific broadcasts, when it takes a sense */
if (ifa->ifa_prefixlen < 31) {
fib_magic(RTM_NEWROUTE, RTN_BROADCAST, prefix, 32, prim);
- fib_magic(RTM_NEWROUTE, RTN_BROADCAST, prefix|~mask, 32, prim);
+ fib_magic(RTM_NEWROUTE, RTN_BROADCAST, prefix | ~mask,
+ 32, prim);
}
}
}
@@ -781,17 +785,18 @@ static void fib_del_ifaddr(struct in_ifaddr *ifa)
struct net_device *dev = in_dev->dev;
struct in_ifaddr *ifa1;
struct in_ifaddr *prim = ifa;
- __be32 brd = ifa->ifa_address|~ifa->ifa_mask;
- __be32 any = ifa->ifa_address&ifa->ifa_mask;
+ __be32 brd = ifa->ifa_address | ~ifa->ifa_mask;
+ __be32 any = ifa->ifa_address & ifa->ifa_mask;
#define LOCAL_OK 1
#define BRD_OK 2
#define BRD0_OK 4
#define BRD1_OK 8
unsigned ok = 0;
- if (!(ifa->ifa_flags&IFA_F_SECONDARY))
- fib_magic(RTM_DELROUTE, dev->flags&IFF_LOOPBACK ? RTN_LOCAL :
- RTN_UNICAST, any, ifa->ifa_prefixlen, prim);
+ if (!(ifa->ifa_flags & IFA_F_SECONDARY))
+ fib_magic(RTM_DELROUTE,
+ dev->flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST,
+ any, ifa->ifa_prefixlen, prim);
else {
prim = inet_ifa_byprefix(in_dev, any, ifa->ifa_mask);
if (prim == NULL) {
@@ -801,9 +806,9 @@ static void fib_del_ifaddr(struct in_ifaddr *ifa)
}
/* Deletion is more complicated than add.
- We should take care of not to delete too much :-)
-
- Scan address list to be sure that addresses are really gone.
+ * We should take care of not to delete too much :-)
+ *
+ * Scan address list to be sure that addresses are really gone.
*/
for (ifa1 = in_dev->ifa_list; ifa1; ifa1 = ifa1->ifa_next) {
@@ -817,23 +822,23 @@ static void fib_del_ifaddr(struct in_ifaddr *ifa)
ok |= BRD0_OK;
}
- if (!(ok&BRD_OK))
+ if (!(ok & BRD_OK))
fib_magic(RTM_DELROUTE, RTN_BROADCAST, ifa->ifa_broadcast, 32, prim);
- if (!(ok&BRD1_OK))
+ if (!(ok & BRD1_OK))
fib_magic(RTM_DELROUTE, RTN_BROADCAST, brd, 32, prim);
- if (!(ok&BRD0_OK))
+ if (!(ok & BRD0_OK))
fib_magic(RTM_DELROUTE, RTN_BROADCAST, any, 32, prim);
- if (!(ok&LOCAL_OK)) {
+ if (!(ok & LOCAL_OK)) {
fib_magic(RTM_DELROUTE, RTN_LOCAL, ifa->ifa_local, 32, prim);
/* Check, that this local address finally disappeared. */
if (inet_addr_type(dev_net(dev), ifa->ifa_local) != RTN_LOCAL) {
/* And the last, but not the least thing.
- We must flush stray FIB entries.
-
- First of all, we scan fib_info list searching
- for stray nexthop entries, then ignite fib_flush.
- */
+ * We must flush stray FIB entries.
+ *
+ * First of all, we scan fib_info list searching
+ * for stray nexthop entries, then ignite fib_flush.
+ */
if (fib_sync_down_addr(dev_net(dev), ifa->ifa_local))
fib_flush(dev_net(dev));
}
@@ -844,14 +849,20 @@ static void fib_del_ifaddr(struct in_ifaddr *ifa)
#undef BRD1_OK
}
-static void nl_fib_lookup(struct fib_result_nl *frn, struct fib_table *tb )
+static void nl_fib_lookup(struct fib_result_nl *frn, struct fib_table *tb)
{
struct fib_result res;
- struct flowi fl = { .mark = frn->fl_mark,
- .nl_u = { .ip4_u = { .daddr = frn->fl_addr,
- .tos = frn->fl_tos,
- .scope = frn->fl_scope } } };
+ struct flowi fl = {
+ .mark = frn->fl_mark,
+ .nl_u = {
+ .ip4_u = {
+ .daddr = frn->fl_addr,
+ .tos = frn->fl_tos,
+ .scope = frn->fl_scope
+ }
+ }
+ };
#ifdef CONFIG_IP_MULTIPLE_TABLES
res.r = NULL;
@@ -899,8 +910,8 @@ static void nl_fib_input(struct sk_buff *skb)
nl_fib_lookup(frn, tb);
- pid = NETLINK_CB(skb).pid; /* pid of sending process */
- NETLINK_CB(skb).pid = 0; /* from kernel */
+ pid = NETLINK_CB(skb).pid; /* pid of sending process */
+ NETLINK_CB(skb).pid = 0; /* from kernel */
NETLINK_CB(skb).dst_group = 0; /* unicast */
netlink_unicast(net->ipv4.fibnl, skb, pid, MSG_DONTWAIT);
}
@@ -947,7 +958,7 @@ static int fib_inetaddr_event(struct notifier_block *this, unsigned long event,
fib_del_ifaddr(ifa);
if (ifa->ifa_dev->ifa_list == NULL) {
/* Last address was deleted from this interface.
- Disable IP.
+ * Disable IP.
*/
fib_disable_ip(dev, 1, 0);
} else {
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 16:03:57 +0000