mirror of https://gitee.com/openkylin/linux.git
ipv4: replace dst_metric() with dst_mtu() in net/ipv4/route.c.
This patch replaces dst_metric() with dst_mtu() in net/ipv4/route.c. Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1509,14 +1509,14 @@ unsigned short ip_rt_frag_needed(struct net *net, struct iphdr *iph,
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/* BSD 4.2 compatibility hack :-( */
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if (mtu == 0 &&
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old_mtu >= dst_metric(&rth->u.dst, RTAX_MTU) &&
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old_mtu >= dst_mtu(&rth->u.dst) &&
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old_mtu >= 68 + (iph->ihl << 2))
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old_mtu -= iph->ihl << 2;
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mtu = guess_mtu(old_mtu);
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}
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if (mtu <= dst_metric(&rth->u.dst, RTAX_MTU)) {
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if (mtu < dst_metric(&rth->u.dst, RTAX_MTU)) {
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if (mtu <= dst_mtu(&rth->u.dst)) {
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if (mtu < dst_mtu(&rth->u.dst)) {
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dst_confirm(&rth->u.dst);
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if (mtu < ip_rt_min_pmtu) {
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mtu = ip_rt_min_pmtu;
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@ -1538,7 +1538,7 @@ unsigned short ip_rt_frag_needed(struct net *net, struct iphdr *iph,
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static void ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu)
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{
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if (dst_metric(dst, RTAX_MTU) > mtu && mtu >= 68 &&
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if (dst_mtu(dst) > mtu && mtu >= 68 &&
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!(dst_metric_locked(dst, RTAX_MTU))) {
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if (mtu < ip_rt_min_pmtu) {
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mtu = ip_rt_min_pmtu;
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@ -1667,7 +1667,7 @@ static void rt_set_nexthop(struct rtable *rt, struct fib_result *res, u32 itag)
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if (dst_metric(&rt->u.dst, RTAX_HOPLIMIT) == 0)
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rt->u.dst.metrics[RTAX_HOPLIMIT-1] = sysctl_ip_default_ttl;
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if (dst_metric(&rt->u.dst, RTAX_MTU) > IP_MAX_MTU)
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if (dst_mtu(&rt->u.dst) > IP_MAX_MTU)
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rt->u.dst.metrics[RTAX_MTU-1] = IP_MAX_MTU;
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if (dst_metric(&rt->u.dst, RTAX_ADVMSS) == 0)
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rt->u.dst.metrics[RTAX_ADVMSS-1] = max_t(unsigned int, rt->u.dst.dev->mtu - 40,
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