mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-01 21:38:26 +02:00
8fb4b275c2
decreases CPU load with the default firewall for routing 95 mbit/s from 78% to 55% git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27878 3c298f89-4303-0410-b956-a3cf2f4a3e73
118 lines
2.4 KiB
Diff
118 lines
2.4 KiB
Diff
--- a/arch/mips/include/asm/checksum.h
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+++ b/arch/mips/include/asm/checksum.h
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@@ -12,6 +12,7 @@
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#define _ASM_CHECKSUM_H
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#include <linux/in6.h>
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+#include <linux/unaligned/packed_struct.h>
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#include <asm/uaccess.h>
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@@ -104,26 +105,30 @@ static inline __sum16 ip_fast_csum(const
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const unsigned int *stop = word + ihl;
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unsigned int csum;
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int carry;
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+ unsigned int w;
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- csum = word[0];
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- csum += word[1];
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- carry = (csum < word[1]);
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+ csum = __get_unaligned_cpu32(word++);
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+
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+ w = __get_unaligned_cpu32(word++);
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+ csum += w;
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+ carry = (csum < w);
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csum += carry;
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- csum += word[2];
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- carry = (csum < word[2]);
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+ w = __get_unaligned_cpu32(word++);
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+ csum += w;
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+ carry = (csum < w);
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csum += carry;
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- csum += word[3];
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- carry = (csum < word[3]);
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+ w = __get_unaligned_cpu32(word++);
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+ csum += w;
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+ carry = (csum < w);
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csum += carry;
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- word += 4;
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do {
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- csum += *word;
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- carry = (csum < *word);
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+ w = __get_unaligned_cpu32(word++);
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+ csum += w;
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+ carry = (csum < w);
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csum += carry;
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- word++;
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} while (word != stop);
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return csum_fold(csum);
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--- a/include/linux/ip.h
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+++ b/include/linux/ip.h
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@@ -102,7 +102,7 @@ struct iphdr {
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__be32 saddr;
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__be32 daddr;
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/*The options start here. */
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-};
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+} __packed;
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#ifdef __KERNEL__
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#include <linux/skbuff.h>
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--- a/include/linux/ipv6.h
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+++ b/include/linux/ipv6.h
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@@ -126,7 +126,7 @@ struct ipv6hdr {
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struct in6_addr saddr;
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struct in6_addr daddr;
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-};
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+} __packed;
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#ifdef __KERNEL__
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/*
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--- a/include/linux/tcp.h
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+++ b/include/linux/tcp.h
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@@ -54,7 +54,7 @@ struct tcphdr {
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__be16 window;
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__sum16 check;
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__be16 urg_ptr;
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-};
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+} __packed;
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/*
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* The union cast uses a gcc extension to avoid aliasing problems
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--- a/include/linux/udp.h
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+++ b/include/linux/udp.h
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@@ -24,7 +24,7 @@ struct udphdr {
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__be16 dest;
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__be16 len;
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__sum16 check;
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-};
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+} __packed;
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/* UDP socket options */
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#define UDP_CORK 1 /* Never send partially complete segments */
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--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
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+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
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@@ -14,6 +14,7 @@
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#include <linux/skbuff.h>
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#include <linux/icmp.h>
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#include <linux/sysctl.h>
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+#include <linux/unaligned/packed_struct.h>
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#include <net/route.h>
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#include <net/ip.h>
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@@ -44,8 +45,8 @@ static bool ipv4_pkt_to_tuple(const stru
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if (ap == NULL)
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return false;
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- tuple->src.u3.ip = ap[0];
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- tuple->dst.u3.ip = ap[1];
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+ tuple->src.u3.ip = __get_unaligned_cpu32(ap++);
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+ tuple->dst.u3.ip = __get_unaligned_cpu32(ap);
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return true;
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}
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