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Commit 5ffc02a1 authored by Satoru SATOH's avatar Satoru SATOH Committed by David S. Miller
Browse files

ip: Use inline function dst_metric() instead of direct access to dst->metric[] 



There are functions to refer to the value of dst->metric[THE_METRIC-1]
directly without use of a inline function "dst_metric" defined in
net/dst.h.

The following patch changes them to use the inline function
consistently.

Signed-off-by: default avatarSatoru SATOH <satoru.satoh@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0bbeafd0

net/decnet/dn_route.c

+6 −6
Original line number Diff line number Diff line
@@ -235,14 +235,14 @@ static void dn_dst_update_pmtu(struct dst_entry *dst, u32 mtu) 
	else

		min_mtu -= 21;



	if (dst->metrics[RTAX_MTU-1] > mtu && mtu >= min_mtu) {

	if (dst_metric(dst, RTAX_MTU) > mtu && mtu >= min_mtu) {

		if (!(dst_metric_locked(dst, RTAX_MTU))) {

			dst->metrics[RTAX_MTU-1] = mtu;

			dst_set_expires(dst, dn_rt_mtu_expires);

		}

		if (!(dst_metric_locked(dst, RTAX_ADVMSS))) {

			u32 mss = mtu - DN_MAX_NSP_DATA_HEADER;

			if (dst->metrics[RTAX_ADVMSS-1] > mss)

			if (dst_metric(dst, RTAX_ADVMSS) > mss)

				dst->metrics[RTAX_ADVMSS-1] = mss;

		}

	}
@@ -805,12 +805,12 @@ static int dn_rt_set_next_hop(struct dn_route *rt, struct dn_fib_res *res) 
		rt->u.dst.neighbour = n;

	}



	if (rt->u.dst.metrics[RTAX_MTU-1] == 0 ||

	    rt->u.dst.metrics[RTAX_MTU-1] > rt->u.dst.dev->mtu)

	if (dst_metric(&rt->u.dst, RTAX_MTU) == 0 ||

	    dst_metric(&rt->u.dst, RTAX_MTU) > rt->u.dst.dev->mtu)

		rt->u.dst.metrics[RTAX_MTU-1] = rt->u.dst.dev->mtu;

	mss = dn_mss_from_pmtu(dev, dst_mtu(&rt->u.dst));

	if (rt->u.dst.metrics[RTAX_ADVMSS-1] == 0 ||

	    rt->u.dst.metrics[RTAX_ADVMSS-1] > mss)

	if (dst_metric(&rt->u.dst, RTAX_ADVMSS) == 0 ||

	    dst_metric(&rt->u.dst, RTAX_ADVMSS) > mss)

		rt->u.dst.metrics[RTAX_ADVMSS-1] = mss;

	return 0;

}

net/ipv4/route.c

+8 −8
Original line number Diff line number Diff line
@@ -1468,14 +1468,14 @@ unsigned short ip_rt_frag_needed(struct net *net, struct iphdr *iph, 


					/* BSD 4.2 compatibility hack :-( */

					if (mtu == 0 &&

					    old_mtu >= rth->u.dst.metrics[RTAX_MTU-1] &&

					    old_mtu >= dst_metric(&rth->u.dst, RTAX_MTU) &&

					    old_mtu >= 68 + (iph->ihl << 2))

						old_mtu -= iph->ihl << 2;



					mtu = guess_mtu(old_mtu);

				}

				if (mtu <= rth->u.dst.metrics[RTAX_MTU-1]) {

					if (mtu < rth->u.dst.metrics[RTAX_MTU-1]) {

				if (mtu <= dst_metric(&rth->u.dst, RTAX_MTU)) {

					if (mtu < dst_metric(&rth->u.dst, RTAX_MTU)) {

						dst_confirm(&rth->u.dst);

						if (mtu < ip_rt_min_pmtu) {

							mtu = ip_rt_min_pmtu;
@@ -1497,7 +1497,7 @@ unsigned short ip_rt_frag_needed(struct net *net, struct iphdr *iph, 


static void ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu)

{

	if (dst->metrics[RTAX_MTU-1] > mtu && mtu >= 68 &&

	if (dst_metric(dst, RTAX_MTU) > mtu && mtu >= 68 &&

	    !(dst_metric_locked(dst, RTAX_MTU))) {

		if (mtu < ip_rt_min_pmtu) {

			mtu = ip_rt_min_pmtu;
@@ -1624,14 +1624,14 @@ static void rt_set_nexthop(struct rtable *rt, struct fib_result *res, u32 itag) 
	} else

		rt->u.dst.metrics[RTAX_MTU-1]= rt->u.dst.dev->mtu;



	if (rt->u.dst.metrics[RTAX_HOPLIMIT-1] == 0)

	if (dst_metric(&rt->u.dst, RTAX_HOPLIMIT) == 0)

		rt->u.dst.metrics[RTAX_HOPLIMIT-1] = sysctl_ip_default_ttl;

	if (rt->u.dst.metrics[RTAX_MTU-1] > IP_MAX_MTU)

	if (dst_metric(&rt->u.dst, RTAX_MTU) > IP_MAX_MTU)

		rt->u.dst.metrics[RTAX_MTU-1] = IP_MAX_MTU;

	if (rt->u.dst.metrics[RTAX_ADVMSS-1] == 0)

	if (dst_metric(&rt->u.dst, RTAX_ADVMSS) == 0)

		rt->u.dst.metrics[RTAX_ADVMSS-1] = max_t(unsigned int, rt->u.dst.dev->mtu - 40,

				       ip_rt_min_advmss);

	if (rt->u.dst.metrics[RTAX_ADVMSS-1] > 65535 - 40)

	if (dst_metric(&rt->u.dst, RTAX_ADVMSS) > 65535 - 40)

		rt->u.dst.metrics[RTAX_ADVMSS-1] = 65535 - 40;



#ifdef CONFIG_NET_CLS_ROUTE

net/ipv4/tcp_input.c

+8 −7
Original line number Diff line number Diff line
@@ -66,6 +66,7 @@ 
#include <linux/mm.h>

#include <linux/module.h>

#include <linux/sysctl.h>

#include <net/dst.h>

#include <net/tcp.h>

#include <net/inet_common.h>

#include <linux/ipsec.h>
@@ -605,7 +606,7 @@ static u32 tcp_rto_min(struct sock *sk) 
	u32 rto_min = TCP_RTO_MIN;



	if (dst && dst_metric_locked(dst, RTAX_RTO_MIN))

		rto_min = dst->metrics[RTAX_RTO_MIN - 1];

		rto_min = dst_metric(dst, RTAX_RTO_MIN);

	return rto_min;

}
@@ -769,7 +770,7 @@ void tcp_update_metrics(struct sock *sk) 
				dst->metrics[RTAX_RTTVAR - 1] = m;

			else

				dst->metrics[RTAX_RTTVAR-1] -=

					(dst->metrics[RTAX_RTTVAR-1] - m)>>2;

					(dst_metric(dst, RTAX_RTTVAR) - m)>>2;

		}



		if (tp->snd_ssthresh >= 0xFFFF) {
@@ -788,21 +789,21 @@ void tcp_update_metrics(struct sock *sk) 
				dst->metrics[RTAX_SSTHRESH-1] =

					max(tp->snd_cwnd >> 1, tp->snd_ssthresh);

			if (!dst_metric_locked(dst, RTAX_CWND))

				dst->metrics[RTAX_CWND-1] = (dst->metrics[RTAX_CWND-1] + tp->snd_cwnd) >> 1;

				dst->metrics[RTAX_CWND-1] = (dst_metric(dst, RTAX_CWND) + tp->snd_cwnd) >> 1;

		} else {

			/* Else slow start did not finish, cwnd is non-sense,

			   ssthresh may be also invalid.

			 */

			if (!dst_metric_locked(dst, RTAX_CWND))

				dst->metrics[RTAX_CWND-1] = (dst->metrics[RTAX_CWND-1] + tp->snd_ssthresh) >> 1;

			if (dst->metrics[RTAX_SSTHRESH-1] &&

				dst->metrics[RTAX_CWND-1] = (dst_metric(dst, RTAX_CWND) + tp->snd_ssthresh) >> 1;

			if (dst_metric(dst, RTAX_SSTHRESH) &&

			    !dst_metric_locked(dst, RTAX_SSTHRESH) &&

			    tp->snd_ssthresh > dst->metrics[RTAX_SSTHRESH-1])

			    tp->snd_ssthresh > dst_metric(dst, RTAX_SSTHRESH))

				dst->metrics[RTAX_SSTHRESH-1] = tp->snd_ssthresh;

		}



		if (!dst_metric_locked(dst, RTAX_REORDERING)) {

			if (dst->metrics[RTAX_REORDERING-1] < tp->reordering &&

			if (dst_metric(dst, RTAX_REORDERING) < tp->reordering &&

			    tp->reordering != sysctl_tcp_reordering)

				dst->metrics[RTAX_REORDERING-1] = tp->reordering;

		}

net/ipv6/route.c

+3 −3
Original line number Diff line number Diff line
@@ -1243,11 +1243,11 @@ int ip6_route_add(struct fib6_config *cfg) 
		}

	}



	if (rt->u.dst.metrics[RTAX_HOPLIMIT-1] == 0)

	if (dst_metric(&rt->u.dst, RTAX_HOPLIMIT) == 0)

		rt->u.dst.metrics[RTAX_HOPLIMIT-1] = -1;

	if (!rt->u.dst.metrics[RTAX_MTU-1])

	if (!dst_metric(&rt->u.dst, RTAX_MTU))

		rt->u.dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(dev);

	if (!rt->u.dst.metrics[RTAX_ADVMSS-1])

	if (!dst_metric(&rt->u.dst, RTAX_ADVMSS))

		rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->u.dst));

	rt->u.dst.dev = dev;

	rt->rt6i_idev = idev;