From: Julian Anastasov Date: Thu, 21 Mar 2013 09:57:59 +0000 (+0200) Subject: ipvs: avoid routing by TOS for real server X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c90558dae51cef334f3d9d447cf7c0fd1bfe725d;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git ipvs: avoid routing by TOS for real server Avoid replacing the cached route for real server on every packet with different TOS. I doubt that routing by TOS for real server is used at all, so we should be better with such optimization. Signed-off-by: Julian Anastasov Signed-off by: Hans Schillstrom Signed-off-by: Simon Horman --- diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index bee87badabef..64db11769cc2 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -753,7 +753,6 @@ struct ip_vs_dest { /* for destination cache */ spinlock_t dst_lock; /* lock of dst_cache */ struct dst_entry *dst_cache; /* destination cache entry */ - u32 dst_rtos; /* RT_TOS(tos) for dst */ u32 dst_cookie; union nf_inet_addr dst_saddr; diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c index ee6b7a9f1ec2..4b0bd15ad7c1 100644 --- a/net/netfilter/ipvs/ip_vs_xmit.c +++ b/net/netfilter/ipvs/ip_vs_xmit.c @@ -57,27 +57,24 @@ enum { * Destination cache to speed up outgoing route lookup */ static inline void -__ip_vs_dst_set(struct ip_vs_dest *dest, u32 rtos, struct dst_entry *dst, - u32 dst_cookie) +__ip_vs_dst_set(struct ip_vs_dest *dest, struct dst_entry *dst, u32 dst_cookie) { struct dst_entry *old_dst; old_dst = dest->dst_cache; dest->dst_cache = dst; - dest->dst_rtos = rtos; dest->dst_cookie = dst_cookie; dst_release(old_dst); } static inline struct dst_entry * -__ip_vs_dst_check(struct ip_vs_dest *dest, u32 rtos) +__ip_vs_dst_check(struct ip_vs_dest *dest) { struct dst_entry *dst = dest->dst_cache; if (!dst) return NULL; - if ((dst->obsolete || rtos != dest->dst_rtos) && - dst->ops->check(dst, dest->dst_cookie) == NULL) { + if (dst->obsolete && dst->ops->check(dst, dest->dst_cookie) == NULL) { dest->dst_cache = NULL; dst_release(dst); return NULL; @@ -104,7 +101,7 @@ __mtu_check_toobig_v6(const struct sk_buff *skb, u32 mtu) /* Get route to daddr, update *saddr, optionally bind route to saddr */ static struct rtable *do_output_route4(struct net *net, __be32 daddr, - u32 rtos, int rt_mode, __be32 *saddr) + int rt_mode, __be32 *saddr) { struct flowi4 fl4; struct rtable *rt; @@ -113,7 +110,6 @@ static struct rtable *do_output_route4(struct net *net, __be32 daddr, memset(&fl4, 0, sizeof(fl4)); fl4.daddr = daddr; fl4.saddr = (rt_mode & IP_VS_RT_MODE_CONNECT) ? *saddr : 0; - fl4.flowi4_tos = rtos; fl4.flowi4_flags = (rt_mode & IP_VS_RT_MODE_KNOWN_NH) ? FLOWI_FLAG_KNOWN_NH : 0; @@ -124,7 +120,7 @@ retry: if (PTR_ERR(rt) == -EINVAL && *saddr && rt_mode & IP_VS_RT_MODE_CONNECT && !loop) { *saddr = 0; - flowi4_update_output(&fl4, 0, rtos, daddr, 0); + flowi4_update_output(&fl4, 0, 0, daddr, 0); goto retry; } IP_VS_DBG_RL("ip_route_output error, dest: %pI4\n", &daddr); @@ -132,7 +128,7 @@ retry: } else if (!*saddr && rt_mode & IP_VS_RT_MODE_CONNECT && fl4.saddr) { ip_rt_put(rt); *saddr = fl4.saddr; - flowi4_update_output(&fl4, 0, rtos, daddr, fl4.saddr); + flowi4_update_output(&fl4, 0, 0, daddr, fl4.saddr); loop++; goto retry; } @@ -143,7 +139,7 @@ retry: /* Get route to destination or remote server */ static struct rtable * __ip_vs_get_out_rt(struct sk_buff *skb, struct ip_vs_dest *dest, - __be32 daddr, u32 rtos, int rt_mode, __be32 *ret_saddr) + __be32 daddr, int rt_mode, __be32 *ret_saddr) { struct net *net = dev_net(skb_dst(skb)->dev); struct rtable *rt; /* Route to the other host */ @@ -152,19 +148,18 @@ __ip_vs_get_out_rt(struct sk_buff *skb, struct ip_vs_dest *dest, if (dest) { spin_lock(&dest->dst_lock); - if (!(rt = (struct rtable *) - __ip_vs_dst_check(dest, rtos))) { - rt = do_output_route4(net, dest->addr.ip, rtos, - rt_mode, &dest->dst_saddr.ip); + rt = (struct rtable *) __ip_vs_dst_check(dest); + if (!rt) { + rt = do_output_route4(net, dest->addr.ip, rt_mode, + &dest->dst_saddr.ip); if (!rt) { spin_unlock(&dest->dst_lock); return NULL; } - __ip_vs_dst_set(dest, rtos, dst_clone(&rt->dst), 0); - IP_VS_DBG(10, "new dst %pI4, src %pI4, refcnt=%d, " - "rtos=%X\n", + __ip_vs_dst_set(dest, dst_clone(&rt->dst), 0); + IP_VS_DBG(10, "new dst %pI4, src %pI4, refcnt=%d\n", &dest->addr.ip, &dest->dst_saddr.ip, - atomic_read(&rt->dst.__refcnt), rtos); + atomic_read(&rt->dst.__refcnt)); } daddr = dest->addr.ip; if (ret_saddr) @@ -177,7 +172,7 @@ __ip_vs_get_out_rt(struct sk_buff *skb, struct ip_vs_dest *dest, * for performance reasons because we do not remember saddr */ rt_mode &= ~IP_VS_RT_MODE_CONNECT; - rt = do_output_route4(net, daddr, rtos, rt_mode, &saddr); + rt = do_output_route4(net, daddr, rt_mode, &saddr); if (!rt) return NULL; if (ret_saddr) @@ -307,7 +302,7 @@ __ip_vs_get_out_rt_v6(struct sk_buff *skb, struct ip_vs_dest *dest, if (dest) { spin_lock(&dest->dst_lock); - rt = (struct rt6_info *)__ip_vs_dst_check(dest, 0); + rt = (struct rt6_info *)__ip_vs_dst_check(dest); if (!rt) { u32 cookie; @@ -320,7 +315,7 @@ __ip_vs_get_out_rt_v6(struct sk_buff *skb, struct ip_vs_dest *dest, } rt = (struct rt6_info *) dst; cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0; - __ip_vs_dst_set(dest, 0, dst_clone(&rt->dst), cookie); + __ip_vs_dst_set(dest, dst_clone(&rt->dst), cookie); IP_VS_DBG(10, "new dst %pI6, src %pI6, refcnt=%d\n", &dest->addr.in6, &dest->dst_saddr.in6, atomic_read(&rt->dst.__refcnt)); @@ -449,8 +444,9 @@ ip_vs_bypass_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, EnterFunction(10); - if (!(rt = __ip_vs_get_out_rt(skb, NULL, iph->daddr, RT_TOS(iph->tos), - IP_VS_RT_MODE_NON_LOCAL, NULL))) + rt = __ip_vs_get_out_rt(skb, NULL, iph->daddr, IP_VS_RT_MODE_NON_LOCAL, + NULL); + if (!rt) goto tx_error_icmp; /* MTU checking */ @@ -581,10 +577,9 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, } if (!(rt = __ip_vs_get_out_rt(skb, cp->dest, cp->daddr.ip, - RT_TOS(iph->tos), IP_VS_RT_MODE_LOCAL | - IP_VS_RT_MODE_NON_LOCAL | - IP_VS_RT_MODE_RDR, NULL))) + IP_VS_RT_MODE_NON_LOCAL | + IP_VS_RT_MODE_RDR, NULL))) goto tx_error_icmp; local = rt->rt_flags & RTCF_LOCAL; /* @@ -832,10 +827,9 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, EnterFunction(10); if (!(rt = __ip_vs_get_out_rt(skb, cp->dest, cp->daddr.ip, - RT_TOS(tos), IP_VS_RT_MODE_LOCAL | - IP_VS_RT_MODE_NON_LOCAL | - IP_VS_RT_MODE_CONNECT, - &saddr))) + IP_VS_RT_MODE_LOCAL | + IP_VS_RT_MODE_NON_LOCAL | + IP_VS_RT_MODE_CONNECT, &saddr))) goto tx_error_icmp; if (rt->rt_flags & RTCF_LOCAL) { ip_rt_put(rt); @@ -1067,7 +1061,6 @@ ip_vs_dr_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, EnterFunction(10); if (!(rt = __ip_vs_get_out_rt(skb, cp->dest, cp->daddr.ip, - RT_TOS(iph->tos), IP_VS_RT_MODE_LOCAL | IP_VS_RT_MODE_NON_LOCAL | IP_VS_RT_MODE_KNOWN_NH, NULL))) @@ -1223,7 +1216,6 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, IP_VS_RT_MODE_LOCAL | IP_VS_RT_MODE_NON_LOCAL | IP_VS_RT_MODE_RDR : IP_VS_RT_MODE_NON_LOCAL; if (!(rt = __ip_vs_get_out_rt(skb, cp->dest, cp->daddr.ip, - RT_TOS(ip_hdr(skb)->tos), rt_mode, NULL))) goto tx_error_icmp; local = rt->rt_flags & RTCF_LOCAL;