ar71xx: extend the unaligned access hacks to a few more places that showed up in...

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35124 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/patches-3.7/902-unaligned_access_hacks.patch b/target/linux/ar71xx/patches-3.7/902-unaligned_access_hacks.patch
index 23ee8a8..7e4cf9f 100644 (file)
--- a/target/linux/ar71xx/patches-3.7/902-unaligned_access_hacks.patch
+++ b/target/linux/ar71xx/patches-3.7/902-unaligned_access_hacks.patch
@@ -83,6 +83,15 @@
  
  /*
   *    The union cast uses a gcc extension to avoid aliasing problems
+@@ -64,7 +64,7 @@ struct tcphdr {
+ union tcp_word_hdr { 
+       struct tcphdr hdr;
+       __be32            words[5];
+-}; 
++} __packed __attribute__((aligned(2)));
+ 
+ #define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3]) 
+ 
 --- a/include/uapi/linux/udp.h
 +++ b/include/uapi/linux/udp.h
 @@ -24,7 +24,7 @@ struct udphdr {
@@ -115,3 +124,35 @@
  
        return true;
  }
+--- a/include/uapi/linux/icmp.h
++++ b/include/uapi/linux/icmp.h
+@@ -80,7 +80,7 @@ struct icmphdr {
+               __be16  mtu;
+       } frag;
+   } un;
+-};
++} __packed __attribute__((aligned(2)));
+ 
+ 
+ /*
+--- a/net/ipv4/tcp_input.c
++++ b/net/ipv4/tcp_input.c
+@@ -3842,13 +3842,14 @@ static bool tcp_parse_aligned_timestamp(
+ {
+       const __be32 *ptr = (const __be32 *)(th + 1);
+ 
+-      if (*ptr == htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16)
+-                        | (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP)) {
++      if (__get_unaligned_cpu32(ptr) ==
++          htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
++          (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP)) {
+               tp->rx_opt.saw_tstamp = 1;
+               ++ptr;
+-              tp->rx_opt.rcv_tsval = ntohl(*ptr);
++              tp->rx_opt.rcv_tsval = get_unaligned_be32(ptr);
+               ++ptr;
+-              tp->rx_opt.rcv_tsecr = ntohl(*ptr);
++              tp->rx_opt.rcv_tsecr = get_unaligned_be32(ptr);
+               return true;
+       }
+       return false;