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-rw-r--r--target/linux/ar71xx/patches-3.10/902-unaligned_access_hacks.patch904
1 files changed, 904 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.10/902-unaligned_access_hacks.patch b/target/linux/ar71xx/patches-3.10/902-unaligned_access_hacks.patch
new file mode 100644
index 0000000..4e7af8d
--- /dev/null
+++ b/target/linux/ar71xx/patches-3.10/902-unaligned_access_hacks.patch
@@ -0,0 +1,904 @@
+--- a/arch/mips/include/asm/checksum.h
++++ b/arch/mips/include/asm/checksum.h
+@@ -104,26 +104,30 @@ static inline __sum16 ip_fast_csum(const
+ const unsigned int *stop = word + ihl;
+ unsigned int csum;
+ int carry;
++ unsigned int w;
+
+- csum = word[0];
+- csum += word[1];
+- carry = (csum < word[1]);
++ csum = net_hdr_word(word++);
++
++ w = net_hdr_word(word++);
++ csum += w;
++ carry = (csum < w);
+ csum += carry;
+
+- csum += word[2];
+- carry = (csum < word[2]);
++ w = net_hdr_word(word++);
++ csum += w;
++ carry = (csum < w);
+ csum += carry;
+
+- csum += word[3];
+- carry = (csum < word[3]);
++ w = net_hdr_word(word++);
++ csum += w;
++ carry = (csum < w);
+ csum += carry;
+
+- word += 4;
+ do {
+- csum += *word;
+- carry = (csum < *word);
++ w = net_hdr_word(word++);
++ csum += w;
++ carry = (csum < w);
+ csum += carry;
+- word++;
+ } while (word != stop);
+
+ return csum_fold(csum);
+@@ -192,69 +196,4 @@ static inline __sum16 ip_compute_csum(co
+ return csum_fold(csum_partial(buff, len, 0));
+ }
+
+-#define _HAVE_ARCH_IPV6_CSUM
+-static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
+- const struct in6_addr *daddr,
+- __u32 len, unsigned short proto,
+- __wsum sum)
+-{
+- __asm__(
+- " .set push # csum_ipv6_magic\n"
+- " .set noreorder \n"
+- " .set noat \n"
+- " addu %0, %5 # proto (long in network byte order)\n"
+- " sltu $1, %0, %5 \n"
+- " addu %0, $1 \n"
+-
+- " addu %0, %6 # csum\n"
+- " sltu $1, %0, %6 \n"
+- " lw %1, 0(%2) # four words source address\n"
+- " addu %0, $1 \n"
+- " addu %0, %1 \n"
+- " sltu $1, %0, %1 \n"
+-
+- " lw %1, 4(%2) \n"
+- " addu %0, $1 \n"
+- " addu %0, %1 \n"
+- " sltu $1, %0, %1 \n"
+-
+- " lw %1, 8(%2) \n"
+- " addu %0, $1 \n"
+- " addu %0, %1 \n"
+- " sltu $1, %0, %1 \n"
+-
+- " lw %1, 12(%2) \n"
+- " addu %0, $1 \n"
+- " addu %0, %1 \n"
+- " sltu $1, %0, %1 \n"
+-
+- " lw %1, 0(%3) \n"
+- " addu %0, $1 \n"
+- " addu %0, %1 \n"
+- " sltu $1, %0, %1 \n"
+-
+- " lw %1, 4(%3) \n"
+- " addu %0, $1 \n"
+- " addu %0, %1 \n"
+- " sltu $1, %0, %1 \n"
+-
+- " lw %1, 8(%3) \n"
+- " addu %0, $1 \n"
+- " addu %0, %1 \n"
+- " sltu $1, %0, %1 \n"
+-
+- " lw %1, 12(%3) \n"
+- " addu %0, $1 \n"
+- " addu %0, %1 \n"
+- " sltu $1, %0, %1 \n"
+-
+- " addu %0, $1 # Add final carry\n"
+- " .set pop"
+- : "=r" (sum), "=r" (proto)
+- : "r" (saddr), "r" (daddr),
+- "0" (htonl(len)), "1" (htonl(proto)), "r" (sum));
+-
+- return csum_fold(sum);
+-}
+-
+ #endif /* _ASM_CHECKSUM_H */
+--- a/include/uapi/linux/ip.h
++++ b/include/uapi/linux/ip.h
+@@ -102,7 +102,7 @@ struct iphdr {
+ __be32 saddr;
+ __be32 daddr;
+ /*The options start here. */
+-};
++} __attribute__((packed, aligned(2)));
+
+
+ struct ip_auth_hdr {
+--- a/include/uapi/linux/ipv6.h
++++ b/include/uapi/linux/ipv6.h
+@@ -125,7 +125,7 @@ struct ipv6hdr {
+
+ struct in6_addr saddr;
+ struct in6_addr daddr;
+-};
++} __attribute__((packed, aligned(2)));
+
+
+ /* index values for the variables in ipv6_devconf */
+--- a/include/uapi/linux/tcp.h
++++ b/include/uapi/linux/tcp.h
+@@ -54,7 +54,7 @@ struct tcphdr {
+ __be16 window;
+ __sum16 check;
+ __be16 urg_ptr;
+-};
++} __attribute__((packed, aligned(2)));
+
+ /*
+ * 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];
+-};
++} __attribute__((packed, 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 {
+ __be16 dest;
+ __be16 len;
+ __sum16 check;
+-};
++} __attribute__((packed, aligned(2)));
+
+ /* UDP socket options */
+ #define UDP_CORK 1 /* Never send partially complete segments */
+--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
++++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+@@ -40,8 +40,8 @@ static bool ipv4_pkt_to_tuple(const stru
+ if (ap == NULL)
+ return false;
+
+- tuple->src.u3.ip = ap[0];
+- tuple->dst.u3.ip = ap[1];
++ tuple->src.u3.ip = net_hdr_word(ap++);
++ tuple->dst.u3.ip = net_hdr_word(ap);
+
+ return true;
+ }
+--- a/include/uapi/linux/icmp.h
++++ b/include/uapi/linux/icmp.h
+@@ -80,7 +80,7 @@ struct icmphdr {
+ __be16 mtu;
+ } frag;
+ } un;
+-};
++} __attribute__((packed, aligned(2)));
+
+
+ /*
+--- a/include/uapi/linux/in6.h
++++ b/include/uapi/linux/in6.h
+@@ -36,7 +36,7 @@ struct in6_addr {
+ #define s6_addr in6_u.u6_addr8
+ #define s6_addr16 in6_u.u6_addr16
+ #define s6_addr32 in6_u.u6_addr32
+-};
++} __attribute__((packed, aligned(2)));
+
+ struct sockaddr_in6 {
+ unsigned short int sin6_family; /* AF_INET6 */
+--- a/net/ipv6/af_inet6.c
++++ b/net/ipv6/af_inet6.c
+@@ -60,6 +60,7 @@
+ #endif
+
+ #include <asm/uaccess.h>
++#include <asm/unaligned.h>
+ #include <linux/mroute6.h>
+
+ MODULE_AUTHOR("Cast of dozens");
+@@ -687,7 +688,7 @@ bool ipv6_opt_accepted(const struct sock
+ if ((opt->hop && (np->rxopt.bits.hopopts ||
+ np->rxopt.bits.ohopopts)) ||
+ ((IPV6_FLOWINFO_MASK &
+- *(__be32 *)skb_network_header(skb)) &&
++ net_hdr_word(skb_network_header(skb))) &&
+ np->rxopt.bits.rxflow) ||
+ (opt->srcrt && (np->rxopt.bits.srcrt ||
+ np->rxopt.bits.osrcrt)) ||
+--- a/net/ipv6/tcp_ipv6.c
++++ b/net/ipv6/tcp_ipv6.c
+@@ -64,6 +64,7 @@
+ #include <net/secure_seq.h>
+ #include <net/tcp_memcontrol.h>
+
++#include <asm/unaligned.h>
+ #include <asm/uaccess.h>
+
+ #include <linux/proc_fs.h>
+@@ -763,10 +764,10 @@ static void tcp_v6_send_response(struct
+ topt = (__be32 *)(t1 + 1);
+
+ if (tsecr) {
+- *topt++ = htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
+- (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP);
+- *topt++ = htonl(tsval);
+- *topt++ = htonl(tsecr);
++ put_unaligned_be32((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
++ (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP, topt++);
++ put_unaligned_be32(tsval, topt++);
++ put_unaligned_be32(tsecr, topt++);
+ }
+
+ #ifdef CONFIG_TCP_MD5SIG
+--- a/include/linux/ipv6.h
++++ b/include/linux/ipv6.h
+@@ -4,6 +4,7 @@
+ #include <uapi/linux/ipv6.h>
+
+ #define ipv6_optlen(p) (((p)->hdrlen+1) << 3)
++
+ /*
+ * This structure contains configuration options per IPv6 link.
+ */
+--- a/net/ipv6/datagram.c
++++ b/net/ipv6/datagram.c
+@@ -365,7 +365,7 @@ int ipv6_recv_error(struct sock *sk, str
+ ipv6_iface_scope_id(&sin->sin6_addr,
+ IP6CB(skb)->iif);
+ } else {
+- ipv6_addr_set_v4mapped(*(__be32 *)(nh + serr->addr_offset),
++ ipv6_addr_set_v4mapped(net_hdr_word(nh + serr->addr_offset),
+ &sin->sin6_addr);
+ sin->sin6_scope_id = 0;
+ }
+@@ -687,12 +687,12 @@ int ip6_datagram_send_ctl(struct net *ne
+ }
+
+ if (fl6->flowlabel&IPV6_FLOWINFO_MASK) {
+- if ((fl6->flowlabel^*(__be32 *)CMSG_DATA(cmsg))&~IPV6_FLOWINFO_MASK) {
++ if ((fl6->flowlabel^net_hdr_word(CMSG_DATA(cmsg)))&~IPV6_FLOWINFO_MASK) {
+ err = -EINVAL;
+ goto exit_f;
+ }
+ }
+- fl6->flowlabel = IPV6_FLOWINFO_MASK & *(__be32 *)CMSG_DATA(cmsg);
++ fl6->flowlabel = IPV6_FLOWINFO_MASK & net_hdr_word(CMSG_DATA(cmsg));
+ break;
+
+ case IPV6_2292HOPOPTS:
+--- a/net/ipv6/ip6_gre.c
++++ b/net/ipv6/ip6_gre.c
+@@ -391,7 +391,7 @@ static void ip6gre_err(struct sk_buff *s
+
+ t = ip6gre_tunnel_lookup(skb->dev, &ipv6h->daddr, &ipv6h->saddr,
+ flags & GRE_KEY ?
+- *(((__be32 *)p) + (grehlen / 4) - 1) : 0,
++ net_hdr_word(((__be32 *)p) + (grehlen / 4) - 1) : 0,
+ p[1]);
+ if (t == NULL)
+ return;
+@@ -483,11 +483,11 @@ static int ip6gre_rcv(struct sk_buff *sk
+ offset += 4;
+ }
+ if (flags&GRE_KEY) {
+- key = *(__be32 *)(h + offset);
++ key = net_hdr_word(h + offset);
+ offset += 4;
+ }
+ if (flags&GRE_SEQ) {
+- seqno = ntohl(*(__be32 *)(h + offset));
++ seqno = ntohl(net_hdr_word(h + offset));
+ offset += 4;
+ }
+ }
+@@ -747,7 +747,7 @@ static netdev_tx_t ip6gre_xmit2(struct s
+
+ if (tunnel->parms.o_flags&GRE_SEQ) {
+ ++tunnel->o_seqno;
+- *ptr = htonl(tunnel->o_seqno);
++ net_hdr_word(ptr) = htonl(tunnel->o_seqno);
+ ptr--;
+ }
+ if (tunnel->parms.o_flags&GRE_KEY) {
+@@ -841,9 +841,9 @@ static inline int ip6gre_xmit_ipv6(struc
+
+ dsfield = ipv6_get_dsfield(ipv6h);
+ if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS)
+- fl6.flowlabel |= (*(__be32 *) ipv6h & IPV6_TCLASS_MASK);
++ fl6.flowlabel |= net_hdr_word(ipv6h) & IPV6_TCLASS_MASK;
+ if (t->parms.flags & IP6_TNL_F_USE_ORIG_FLOWLABEL)
+- fl6.flowlabel |= (*(__be32 *) ipv6h & IPV6_FLOWLABEL_MASK);
++ fl6.flowlabel |= net_hdr_word(ipv6h) & IPV6_FLOWLABEL_MASK;
+ if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK)
+ fl6.flowi6_mark = skb->mark;
+
+--- a/net/ipv6/ip6_tunnel.c
++++ b/net/ipv6/ip6_tunnel.c
+@@ -1122,9 +1122,9 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, str
+
+ dsfield = ipv6_get_dsfield(ipv6h);
+ if (t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS)
+- fl6.flowlabel |= (*(__be32 *) ipv6h & IPV6_TCLASS_MASK);
++ fl6.flowlabel |= net_hdr_word(ipv6h) & IPV6_TCLASS_MASK;
+ if (t->parms.flags & IP6_TNL_F_USE_ORIG_FLOWLABEL)
+- fl6.flowlabel |= (*(__be32 *) ipv6h & IPV6_FLOWLABEL_MASK);
++ fl6.flowlabel |= net_hdr_word(ipv6h) & IPV6_FLOWLABEL_MASK;
+ if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK)
+ fl6.flowi6_mark = skb->mark;
+
+--- a/net/ipv6/exthdrs.c
++++ b/net/ipv6/exthdrs.c
+@@ -579,7 +579,7 @@ static bool ipv6_hop_jumbo(struct sk_buf
+ goto drop;
+ }
+
+- pkt_len = ntohl(*(__be32 *)(nh + optoff + 2));
++ pkt_len = ntohl(net_hdr_word(nh + optoff + 2));
+ if (pkt_len <= IPV6_MAXPLEN) {
+ IP6_INC_STATS_BH(net, ipv6_skb_idev(skb),
+ IPSTATS_MIB_INHDRERRORS);
+--- a/include/linux/types.h
++++ b/include/linux/types.h
+@@ -212,5 +212,11 @@ struct callback_head {
+ };
+ #define rcu_head callback_head
+
++struct net_hdr_word {
++ u32 words[1];
++} __attribute__((packed, aligned(2)));
++
++#define net_hdr_word(_p) (((struct net_hdr_word *) (_p))->words[0])
++
+ #endif /* __ASSEMBLY__ */
+ #endif /* _LINUX_TYPES_H */
+--- a/net/ipv4/af_inet.c
++++ b/net/ipv4/af_inet.c
+@@ -1383,8 +1383,8 @@ static struct sk_buff **inet_gro_receive
+ if (unlikely(ip_fast_csum((u8 *)iph, 5)))
+ goto out_unlock;
+
+- id = ntohl(*(__be32 *)&iph->id);
+- flush = (u16)((ntohl(*(__be32 *)iph) ^ skb_gro_len(skb)) | (id ^ IP_DF));
++ id = ntohl(net_hdr_word(&iph->id));
++ flush = (u16)((ntohl(net_hdr_word(iph)) ^ skb_gro_len(skb)) | (id ^ IP_DF));
+ id >>= 16;
+
+ for (p = *head; p; p = p->next) {
+--- a/net/ipv4/route.c
++++ b/net/ipv4/route.c
+@@ -461,7 +461,7 @@ static struct neighbour *ipv4_neigh_look
+ else if (skb)
+ pkey = &ip_hdr(skb)->daddr;
+
+- n = __ipv4_neigh_lookup(dev, *(__force u32 *)pkey);
++ n = __ipv4_neigh_lookup(dev, net_hdr_word(pkey));
+ if (n)
+ return n;
+ return neigh_create(&arp_tbl, pkey, dev);
+--- a/net/ipv4/tcp_output.c
++++ b/net/ipv4/tcp_output.c
+@@ -412,48 +412,53 @@ static void tcp_options_write(__be32 *pt
+ u16 options = opts->options; /* mungable copy */
+
+ if (unlikely(OPTION_MD5 & options)) {
+- *ptr++ = htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
+- (TCPOPT_MD5SIG << 8) | TCPOLEN_MD5SIG);
++ net_hdr_word(ptr++) =
++ htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
++ (TCPOPT_MD5SIG << 8) | TCPOLEN_MD5SIG);
+ /* overload cookie hash location */
+ opts->hash_location = (__u8 *)ptr;
+ ptr += 4;
+ }
+
+ if (unlikely(opts->mss)) {
+- *ptr++ = htonl((TCPOPT_MSS << 24) |
+- (TCPOLEN_MSS << 16) |
+- opts->mss);
++ net_hdr_word(ptr++) =
++ htonl((TCPOPT_MSS << 24) | (TCPOLEN_MSS << 16) |
++ opts->mss);
+ }
+
+ if (likely(OPTION_TS & options)) {
+ if (unlikely(OPTION_SACK_ADVERTISE & options)) {
+- *ptr++ = htonl((TCPOPT_SACK_PERM << 24) |
+- (TCPOLEN_SACK_PERM << 16) |
+- (TCPOPT_TIMESTAMP << 8) |
+- TCPOLEN_TIMESTAMP);
++ net_hdr_word(ptr++) =
++ htonl((TCPOPT_SACK_PERM << 24) |
++ (TCPOLEN_SACK_PERM << 16) |
++ (TCPOPT_TIMESTAMP << 8) |
++ TCPOLEN_TIMESTAMP);
+ options &= ~OPTION_SACK_ADVERTISE;
+ } else {
+- *ptr++ = htonl((TCPOPT_NOP << 24) |
+- (TCPOPT_NOP << 16) |
+- (TCPOPT_TIMESTAMP << 8) |
+- TCPOLEN_TIMESTAMP);
++ net_hdr_word(ptr++) =
++ htonl((TCPOPT_NOP << 24) |
++ (TCPOPT_NOP << 16) |
++ (TCPOPT_TIMESTAMP << 8) |
++ TCPOLEN_TIMESTAMP);
+ }
+- *ptr++ = htonl(opts->tsval);
+- *ptr++ = htonl(opts->tsecr);
++ net_hdr_word(ptr++) = htonl(opts->tsval);
++ net_hdr_word(ptr++) = htonl(opts->tsecr);
+ }
+
+ if (unlikely(OPTION_SACK_ADVERTISE & options)) {
+- *ptr++ = htonl((TCPOPT_NOP << 24) |
+- (TCPOPT_NOP << 16) |
+- (TCPOPT_SACK_PERM << 8) |
+- TCPOLEN_SACK_PERM);
++ net_hdr_word(ptr++) =
++ htonl((TCPOPT_NOP << 24) |
++ (TCPOPT_NOP << 16) |
++ (TCPOPT_SACK_PERM << 8) |
++ TCPOLEN_SACK_PERM);
+ }
+
+ if (unlikely(OPTION_WSCALE & options)) {
+- *ptr++ = htonl((TCPOPT_NOP << 24) |
+- (TCPOPT_WINDOW << 16) |
+- (TCPOLEN_WINDOW << 8) |
+- opts->ws);
++ net_hdr_word(ptr++) =
++ htonl((TCPOPT_NOP << 24) |
++ (TCPOPT_WINDOW << 16) |
++ (TCPOLEN_WINDOW << 8) |
++ opts->ws);
+ }
+
+ if (unlikely(opts->num_sack_blocks)) {
+@@ -461,16 +466,17 @@ static void tcp_options_write(__be32 *pt
+ tp->duplicate_sack : tp->selective_acks;
+ int this_sack;
+
+- *ptr++ = htonl((TCPOPT_NOP << 24) |
+- (TCPOPT_NOP << 16) |
+- (TCPOPT_SACK << 8) |
+- (TCPOLEN_SACK_BASE + (opts->num_sack_blocks *
++ net_hdr_word(ptr++) =
++ htonl((TCPOPT_NOP << 24) |
++ (TCPOPT_NOP << 16) |
++ (TCPOPT_SACK << 8) |
++ (TCPOLEN_SACK_BASE + (opts->num_sack_blocks *
+ TCPOLEN_SACK_PERBLOCK)));
+
+ for (this_sack = 0; this_sack < opts->num_sack_blocks;
+ ++this_sack) {
+- *ptr++ = htonl(sp[this_sack].start_seq);
+- *ptr++ = htonl(sp[this_sack].end_seq);
++ net_hdr_word(ptr++) = htonl(sp[this_sack].start_seq);
++ net_hdr_word(ptr++) = htonl(sp[this_sack].end_seq);
+ }
+
+ tp->rx_opt.dsack = 0;
+@@ -479,9 +485,10 @@ static void tcp_options_write(__be32 *pt
+ if (unlikely(OPTION_FAST_OPEN_COOKIE & options)) {
+ struct tcp_fastopen_cookie *foc = opts->fastopen_cookie;
+
+- *ptr++ = htonl((TCPOPT_EXP << 24) |
+- ((TCPOLEN_EXP_FASTOPEN_BASE + foc->len) << 16) |
+- TCPOPT_FASTOPEN_MAGIC);
++ net_hdr_word(ptr++) =
++ htonl((TCPOPT_EXP << 24) |
++ ((TCPOLEN_EXP_FASTOPEN_BASE + foc->len) << 16) |
++ TCPOPT_FASTOPEN_MAGIC);
+
+ memcpy(ptr, foc->val, foc->len);
+ if ((foc->len & 3) == 2) {
+--- a/net/ipv4/igmp.c
++++ b/net/ipv4/igmp.c
+@@ -470,7 +470,7 @@ static struct sk_buff *add_grec(struct s
+ if (!skb)
+ return NULL;
+ psrc = (__be32 *)skb_put(skb, sizeof(__be32));
+- *psrc = psf->sf_inaddr;
++ net_hdr_word(psrc) = psf->sf_inaddr;
+ scount++; stotal++;
+ if ((type == IGMPV3_ALLOW_NEW_SOURCES ||
+ type == IGMPV3_BLOCK_OLD_SOURCES) && psf->sf_crcount) {
+--- a/include/uapi/linux/igmp.h
++++ b/include/uapi/linux/igmp.h
+@@ -32,7 +32,7 @@ struct igmphdr {
+ __u8 code; /* For newer IGMP */
+ __sum16 csum;
+ __be32 group;
+-};
++} __attribute__((packed, aligned(2)));
+
+ /* V3 group record types [grec_type] */
+ #define IGMPV3_MODE_IS_INCLUDE 1
+@@ -48,7 +48,7 @@ struct igmpv3_grec {
+ __be16 grec_nsrcs;
+ __be32 grec_mca;
+ __be32 grec_src[0];
+-};
++} __attribute__((packed, aligned(2)));
+
+ struct igmpv3_report {
+ __u8 type;
+@@ -57,7 +57,7 @@ struct igmpv3_report {
+ __be16 resv2;
+ __be16 ngrec;
+ struct igmpv3_grec grec[0];
+-};
++} __attribute__((packed, aligned(2)));
+
+ struct igmpv3_query {
+ __u8 type;
+@@ -78,7 +78,7 @@ struct igmpv3_query {
+ __u8 qqic;
+ __be16 nsrcs;
+ __be32 srcs[0];
+-};
++} __attribute__((packed, aligned(2)));
+
+ #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */
+ #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */
+--- a/net/core/flow_dissector.c
++++ b/net/core/flow_dissector.c
+@@ -152,7 +152,7 @@ ipv6:
+ nhoff += poff;
+ ports = skb_header_pointer(skb, nhoff, sizeof(_ports), &_ports);
+ if (ports)
+- flow->ports = *ports;
++ flow->ports = net_hdr_word(ports);
+ }
+
+ flow->thoff = (u16) nhoff;
+--- a/include/uapi/linux/icmpv6.h
++++ b/include/uapi/linux/icmpv6.h
+@@ -76,7 +76,7 @@ struct icmp6hdr {
+ #define icmp6_addrconf_other icmp6_dataun.u_nd_ra.other
+ #define icmp6_rt_lifetime icmp6_dataun.u_nd_ra.rt_lifetime
+ #define icmp6_router_pref icmp6_dataun.u_nd_ra.router_pref
+-};
++} __attribute__((packed, aligned(2)));
+
+
+ #define ICMPV6_ROUTER_PREF_LOW 0x3
+--- a/include/net/ndisc.h
++++ b/include/net/ndisc.h
+@@ -76,7 +76,7 @@ struct ra_msg {
+ struct icmp6hdr icmph;
+ __be32 reachable_time;
+ __be32 retrans_timer;
+-};
++} __attribute__((packed, aligned(2)));
+
+ struct rd_msg {
+ struct icmp6hdr icmph;
+@@ -148,10 +148,10 @@ static inline u32 ndisc_hashfn(const voi
+ {
+ const u32 *p32 = pkey;
+
+- return (((p32[0] ^ hash32_ptr(dev)) * hash_rnd[0]) +
+- (p32[1] * hash_rnd[1]) +
+- (p32[2] * hash_rnd[2]) +
+- (p32[3] * hash_rnd[3]));
++ return (((net_hdr_word(&p32[0]) ^ hash32_ptr(dev)) * hash_rnd[0]) +
++ (net_hdr_word(&p32[1]) * hash_rnd[1]) +
++ (net_hdr_word(&p32[2]) * hash_rnd[2]) +
++ (net_hdr_word(&p32[3]) * hash_rnd[3]));
+ }
+
+ static inline struct neighbour *__ipv6_neigh_lookup_noref(struct net_device *dev, const void *pkey)
+@@ -168,8 +168,10 @@ static inline struct neighbour *__ipv6_n
+ n = rcu_dereference_bh(n->next)) {
+ u32 *n32 = (u32 *) n->primary_key;
+ if (n->dev == dev &&
+- ((n32[0] ^ p32[0]) | (n32[1] ^ p32[1]) |
+- (n32[2] ^ p32[2]) | (n32[3] ^ p32[3])) == 0)
++ ((n32[0] ^ net_hdr_word(&p32[0])) |
++ (n32[1] ^ net_hdr_word(&p32[1])) |
++ (n32[2] ^ net_hdr_word(&p32[2])) |
++ (n32[3] ^ net_hdr_word(&p32[3]))) == 0)
+ return n;
+ }
+
+--- a/net/sched/cls_u32.c
++++ b/net/sched/cls_u32.c
+@@ -142,7 +142,7 @@ next_knode:
+ data = skb_header_pointer(skb, toff, 4, &hdata);
+ if (!data)
+ goto out;
+- if ((*data ^ key->val) & key->mask) {
++ if ((net_hdr_word(data) ^ key->val) & key->mask) {
+ n = n->next;
+ goto next_knode;
+ }
+@@ -193,8 +193,8 @@ check_terminal:
+ &hdata);
+ if (!data)
+ goto out;
+- sel = ht->divisor & u32_hash_fold(*data, &n->sel,
+- n->fshift);
++ sel = ht->divisor & u32_hash_fold(net_hdr_word(data),
++ &n->sel, n->fshift);
+ }
+ if (!(n->sel.flags & (TC_U32_VAROFFSET | TC_U32_OFFSET | TC_U32_EAT)))
+ goto next_ht;
+--- a/net/ipv6/ip6_offload.c
++++ b/net/ipv6/ip6_offload.c
+@@ -199,7 +199,7 @@ static struct sk_buff **ipv6_gro_receive
+ continue;
+
+ iph2 = ipv6_hdr(p);
+- first_word = *(__be32 *)iph ^ *(__be32 *)iph2 ;
++ first_word = net_hdr_word(iph) ^ net_hdr_word(iph2);
+
+ /* All fields must match except length and Traffic Class. */
+ if (nlen != skb_network_header_len(p) ||
+--- a/include/net/addrconf.h
++++ b/include/net/addrconf.h
+@@ -43,7 +43,7 @@ struct prefix_info {
+ __be32 reserved2;
+
+ struct in6_addr prefix;
+-};
++} __attribute__((packed, aligned(2)));
+
+
+ #include <linux/netdevice.h>
+--- a/include/net/inet_ecn.h
++++ b/include/net/inet_ecn.h
+@@ -115,13 +115,13 @@ static inline int IP6_ECN_set_ce(struct
+ {
+ if (INET_ECN_is_not_ect(ipv6_get_dsfield(iph)))
+ return 0;
+- *(__be32*)iph |= htonl(INET_ECN_CE << 20);
++ net_hdr_word(iph) |= htonl(INET_ECN_CE << 20);
+ return 1;
+ }
+
+ static inline void IP6_ECN_clear(struct ipv6hdr *iph)
+ {
+- *(__be32*)iph &= ~htonl(INET_ECN_MASK << 20);
++ net_hdr_word(iph) &= ~htonl(INET_ECN_MASK << 20);
+ }
+
+ static inline void ipv6_copy_dscp(unsigned int dscp, struct ipv6hdr *inner)
+--- a/include/net/ipv6.h
++++ b/include/net/ipv6.h
+@@ -107,7 +107,7 @@ struct frag_hdr {
+ __u8 reserved;
+ __be16 frag_off;
+ __be32 identification;
+-};
++} __attribute__((packed, aligned(2)));
+
+ #define IP6_MF 0x0001
+
+@@ -386,8 +386,8 @@ static inline void __ipv6_addr_set_half(
+ }
+ #endif
+ #endif
+- addr[0] = wh;
+- addr[1] = wl;
++ net_hdr_word(&addr[0]) = wh;
++ net_hdr_word(&addr[1]) = wl;
+ }
+
+ static inline void ipv6_addr_set(struct in6_addr *addr,
+@@ -446,6 +446,8 @@ static inline bool ipv6_prefix_equal(con
+ const __be32 *a1 = addr1->s6_addr32;
+ const __be32 *a2 = addr2->s6_addr32;
+ unsigned int pdw, pbi;
++ /* Used for last <32-bit fraction of prefix */
++ u32 pbia1, pbia2;
+
+ /* check complete u32 in prefix */
+ pdw = prefixlen >> 5;
+@@ -454,7 +456,9 @@ static inline bool ipv6_prefix_equal(con
+
+ /* check incomplete u32 in prefix */
+ pbi = prefixlen & 0x1f;
+- if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
++ pbia1 = net_hdr_word(&a1[pdw]);
++ pbia2 = net_hdr_word(&a2[pdw]);
++ if (pbi && ((pbia1 ^ pbia2) & htonl((0xffffffff) << (32 - pbi))))
+ return false;
+
+ return true;
+@@ -587,13 +591,13 @@ static inline void ipv6_addr_set_v4mappe
+ */
+ static inline int __ipv6_addr_diff32(const void *token1, const void *token2, int addrlen)
+ {
+- const __be32 *a1 = token1, *a2 = token2;
++ const struct in6_addr *a1 = token1, *a2 = token2;
+ int i;
+
+ addrlen >>= 2;
+
+ for (i = 0; i < addrlen; i++) {
+- __be32 xb = a1[i] ^ a2[i];
++ __be32 xb = a1->s6_addr32[i] ^ a2->s6_addr32[i];
+ if (xb)
+ return i * 32 + 31 - __fls(ntohl(xb));
+ }
+@@ -657,12 +661,13 @@ extern void ipv6_select_ident(struct fra
+ static inline void ip6_flow_hdr(struct ipv6hdr *hdr, unsigned int tclass,
+ __be32 flowlabel)
+ {
+- *(__be32 *)hdr = htonl(0x60000000 | (tclass << 20)) | flowlabel;
++ net_hdr_word((__be32 *)hdr) =
++ htonl(0x60000000 | (tclass << 20)) | flowlabel;
+ }
+
+ static inline __be32 ip6_flowinfo(const struct ipv6hdr *hdr)
+ {
+- return *(__be32 *)hdr & IPV6_FLOWINFO_MASK;
++ return net_hdr_word((__be32 *)hdr) & IPV6_FLOWINFO_MASK;
+ }
+
+ /*
+--- a/include/net/secure_seq.h
++++ b/include/net/secure_seq.h
+@@ -2,6 +2,7 @@
+ #define _NET_SECURE_SEQ
+
+ #include <linux/types.h>
++#include <linux/in6.h>
+
+ extern void net_secret_init(void);
+ extern __u32 secure_ip_id(__be32 daddr);
+--- a/include/uapi/linux/in.h
++++ b/include/uapi/linux/in.h
+@@ -55,7 +55,7 @@ enum {
+ /* Internet address. */
+ struct in_addr {
+ __be32 s_addr;
+-};
++} __attribute__((packed, aligned(2)));
+
+ #define IP_TOS 1
+ #define IP_TTL 2
+--- a/net/core/secure_seq.c
++++ b/net/core/secure_seq.c
+@@ -41,10 +41,11 @@ __u32 secure_tcpv6_sequence_number(const
+ u32 secret[MD5_MESSAGE_BYTES / 4];
+ u32 hash[MD5_DIGEST_WORDS];
+ u32 i;
++ const struct in6_addr *daddr6 = (struct in6_addr *) daddr;
+
+ memcpy(hash, saddr, 16);
+ for (i = 0; i < 4; i++)
+- secret[i] = net_secret[i] + (__force u32)daddr[i];
++ secret[i] = net_secret[i] + (__force u32)daddr6->s6_addr32[i];
+ secret[4] = net_secret[4] +
+ (((__force u16)sport << 16) + (__force u16)dport);
+ for (i = 5; i < MD5_MESSAGE_BYTES / 4; i++)
+@@ -62,10 +63,11 @@ u32 secure_ipv6_port_ephemeral(const __b
+ u32 secret[MD5_MESSAGE_BYTES / 4];
+ u32 hash[MD5_DIGEST_WORDS];
+ u32 i;
++ const struct in6_addr *daddr6 = (struct in6_addr *) daddr;
+
+ memcpy(hash, saddr, 16);
+ for (i = 0; i < 4; i++)
+- secret[i] = net_secret[i] + (__force u32) daddr[i];
++ secret[i] = net_secret[i] + (__force u32) daddr6->s6_addr32[i];
+ secret[4] = net_secret[4] + (__force u32)dport;
+ for (i = 5; i < MD5_MESSAGE_BYTES / 4; i++)
+ secret[i] = net_secret[i];
+@@ -163,10 +165,11 @@ u64 secure_dccpv6_sequence_number(__be32
+ u32 hash[MD5_DIGEST_WORDS];
+ u64 seq;
+ u32 i;
++ const struct in6_addr *daddr6 = (struct in6_addr *) daddr;
+
+ memcpy(hash, saddr, 16);
+ for (i = 0; i < 4; i++)
+- secret[i] = net_secret[i] + daddr[i];
++ secret[i] = net_secret[i] + daddr6->s6_addr32[i];
+ secret[4] = net_secret[4] +
+ (((__force u16)sport << 16) + (__force u16)dport);
+ for (i = 5; i < MD5_MESSAGE_BYTES / 4; i++)
+--- a/net/ipv6/ip6_fib.c
++++ b/net/ipv6/ip6_fib.c
+@@ -144,7 +144,7 @@ static __inline__ __be32 addr_bit_set(co
+ * See include/asm-generic/bitops/le.h.
+ */
+ return (__force __be32)(1 << ((~fn_bit ^ BITOP_BE32_SWIZZLE) & 0x1f)) &
+- addr[fn_bit >> 5];
++ net_hdr_word(&addr[fn_bit >> 5]);
+ }
+
+ static __inline__ struct fib6_node * node_alloc(void)
+--- a/net/netfilter/nf_conntrack_proto_tcp.c
++++ b/net/netfilter/nf_conntrack_proto_tcp.c
+@@ -454,7 +454,7 @@ static void tcp_sack(const struct sk_buf
+
+ /* Fast path for timestamp-only option */
+ if (length == TCPOLEN_TSTAMP_ALIGNED
+- && *(__be32 *)ptr == htonl((TCPOPT_NOP << 24)
++ && net_hdr_word(ptr) == htonl((TCPOPT_NOP << 24)
+ | (TCPOPT_NOP << 16)
+ | (TCPOPT_TIMESTAMP << 8)
+ | TCPOLEN_TIMESTAMP))
+--- a/net/netfilter/xt_LOG.c
++++ b/net/netfilter/xt_LOG.c
+@@ -528,9 +528,9 @@ static void dump_ipv6_packet(struct sbuf
+ /* Max length: 44 "LEN=65535 TC=255 HOPLIMIT=255 FLOWLBL=FFFFF " */
+ sb_add(m, "LEN=%Zu TC=%u HOPLIMIT=%u FLOWLBL=%u ",
+ ntohs(ih->payload_len) + sizeof(struct ipv6hdr),
+- (ntohl(*(__be32 *)ih) & 0x0ff00000) >> 20,
++ (ntohl(net_hdr_word(ih)) & 0x0ff00000) >> 20,
+ ih->hop_limit,
+- (ntohl(*(__be32 *)ih) & 0x000fffff));
++ (ntohl(net_hdr_word(ih)) & 0x000fffff));
+
+ fragment = 0;
+ ptr = ip6hoff + sizeof(struct ipv6hdr);
+--- a/net/xfrm/xfrm_input.c
++++ b/net/xfrm/xfrm_input.c
+@@ -77,8 +77,8 @@ int xfrm_parse_spi(struct sk_buff *skb,
+ if (!pskb_may_pull(skb, hlen))
+ return -EINVAL;
+
+- *spi = *(__be32*)(skb_transport_header(skb) + offset);
+- *seq = *(__be32*)(skb_transport_header(skb) + offset_seq);
++ *spi = net_hdr_word(skb_transport_header(skb) + offset);
++ *seq = net_hdr_word(skb_transport_header(skb) + offset_seq);
+ return 0;
+ }
+
+--- a/net/ipv4/ip_gre.c
++++ b/net/ipv4/ip_gre.c
+@@ -190,13 +190,13 @@ static int parse_gre_header(struct sk_bu
+ }
+
+ if (greh->flags & GRE_KEY) {
+- tpi->key = *options;
++ tpi->key = net_hdr_word(options);
+ options++;
+ } else
+ tpi->key = 0;
+
+ if (unlikely(greh->flags & GRE_SEQ)) {
+- tpi->seq = *options;
++ tpi->seq = net_hdr_word(options);
+ options++;
+ } else
+ tpi->seq = 0;
+--- a/net/ipv4/tcp_input.c
++++ b/net/ipv4/tcp_input.c
+@@ -3592,13 +3592,14 @@ 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 (net_hdr_word(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->tsoffset;
++ tp->rx_opt.rcv_tsecr = get_unaligned_be32(ptr) - tp->tsoffset;
+ return true;
+ }
+ return false;