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Commit 4c7e622d authored by David S. Miller's avatar David S. Miller
Browse files

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: default avatarDavid S. Miller <davem@davemloft.net>
parents 0f50c10d 0d753960

include/linux/igmp.h

+1 −1
Original line number Diff line number Diff line
@@ -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);

net/ipv4/igmp.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

net/ipv4/route.c

+4 −7
Original line number Diff line number Diff line
@@ -1487,8 +1487,7 @@ 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))

	if (ipv4_is_loopback(saddr) && !IN_DEV_ROUTE_LOCALNET(in_dev))

		goto e_inval;



	if (ipv4_is_zeronet(saddr)) {
@@ -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;

}