提交 4c7e622d 编写于 作者: D David S. Miller

Merge branch 'ipv4-routing-cleanups'

Alexander Duyck says:

====================
Minor IPv4 routing cleanups

These patches just contain some minor cleanups to address a few minor
issues.  The first and the third mostly just improve readability.  The
second patch should improve the performance for multicast destination
addresses that do not have a localhost source IP address by avoiding some
unnecessary dereferences.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
......@@ -110,7 +110,7 @@ struct ip_mc_list {
#define IGMPV3_QQIC(value) IGMPV3_EXP(0x80, 4, 3, value)
#define IGMPV3_MRC(value) IGMPV3_EXP(0x80, 4, 3, value)
extern int ip_check_mc_rcu(struct in_device *dev, __be32 mc_addr, __be32 src_addr, u16 proto);
extern int ip_check_mc_rcu(struct in_device *dev, __be32 mc_addr, __be32 src_addr, u8 proto);
extern int igmp_rcv(struct sk_buff *);
extern int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr);
extern int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr);
......
......@@ -2569,7 +2569,7 @@ void ip_mc_drop_socket(struct sock *sk)
}
/* called with rcu_read_lock() */
int ip_check_mc_rcu(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u16 proto)
int ip_check_mc_rcu(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u8 proto)
{
struct ip_mc_list *im;
struct ip_mc_list __rcu **mc_hash;
......
......@@ -1487,9 +1487,8 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
skb->protocol != htons(ETH_P_IP))
goto e_inval;
if (likely(!IN_DEV_ROUTE_LOCALNET(in_dev)))
if (ipv4_is_loopback(saddr))
goto e_inval;
if (ipv4_is_loopback(saddr) && !IN_DEV_ROUTE_LOCALNET(in_dev))
goto e_inval;
if (ipv4_is_zeronet(saddr)) {
if (!ipv4_is_local_multicast(daddr))
......@@ -1760,7 +1759,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
err = fib_validate_source(skb, saddr, daddr, tos,
0, dev, in_dev, &itag);
if (err < 0)
goto martian_source_keep_err;
goto martian_source;
goto local_input;
}
......@@ -1782,7 +1781,7 @@ out: return err;
err = fib_validate_source(skb, saddr, 0, tos, 0, dev,
in_dev, &itag);
if (err < 0)
goto martian_source_keep_err;
goto martian_source;
}
flags |= RTCF_BROADCAST;
res.type = RTN_BROADCAST;
......@@ -1858,8 +1857,6 @@ out: return err;
goto out;
martian_source:
err = -EINVAL;
martian_source_keep_err:
ip_handle_martian_source(dev, in_dev, skb, daddr, saddr);
goto out;
}
......
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