015c283e1db0db8be49422aa301af659682d1be2
[openwrt/openwrt.git] / target / linux / ar71xx / patches-4.14 / 910-unaligned_access_hacks.patch
1 --- a/arch/mips/include/asm/checksum.h
2 +++ b/arch/mips/include/asm/checksum.h
3 @@ -134,26 +134,30 @@ static inline __sum16 ip_fast_csum(const
4 const unsigned int *stop = word + ihl;
5 unsigned int csum;
6 int carry;
7 + unsigned int w;
8
9 - csum = word[0];
10 - csum += word[1];
11 - carry = (csum < word[1]);
12 + csum = net_hdr_word(word++);
13 +
14 + w = net_hdr_word(word++);
15 + csum += w;
16 + carry = (csum < w);
17 csum += carry;
18
19 - csum += word[2];
20 - carry = (csum < word[2]);
21 + w = net_hdr_word(word++);
22 + csum += w;
23 + carry = (csum < w);
24 csum += carry;
25
26 - csum += word[3];
27 - carry = (csum < word[3]);
28 + w = net_hdr_word(word++);
29 + csum += w;
30 + carry = (csum < w);
31 csum += carry;
32
33 - word += 4;
34 do {
35 - csum += *word;
36 - carry = (csum < *word);
37 + w = net_hdr_word(word++);
38 + csum += w;
39 + carry = (csum < w);
40 csum += carry;
41 - word++;
42 } while (word != stop);
43
44 return csum_fold(csum);
45 @@ -214,73 +218,6 @@ static inline __sum16 ip_compute_csum(co
46 return csum_fold(csum_partial(buff, len, 0));
47 }
48
49 -#define _HAVE_ARCH_IPV6_CSUM
50 -static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
51 - const struct in6_addr *daddr,
52 - __u32 len, __u8 proto,
53 - __wsum sum)
54 -{
55 - __wsum tmp;
56 -
57 - __asm__(
58 - " .set push # csum_ipv6_magic\n"
59 - " .set noreorder \n"
60 - " .set noat \n"
61 - " addu %0, %5 # proto (long in network byte order)\n"
62 - " sltu $1, %0, %5 \n"
63 - " addu %0, $1 \n"
64 -
65 - " addu %0, %6 # csum\n"
66 - " sltu $1, %0, %6 \n"
67 - " lw %1, 0(%2) # four words source address\n"
68 - " addu %0, $1 \n"
69 - " addu %0, %1 \n"
70 - " sltu $1, %0, %1 \n"
71 -
72 - " lw %1, 4(%2) \n"
73 - " addu %0, $1 \n"
74 - " addu %0, %1 \n"
75 - " sltu $1, %0, %1 \n"
76 -
77 - " lw %1, 8(%2) \n"
78 - " addu %0, $1 \n"
79 - " addu %0, %1 \n"
80 - " sltu $1, %0, %1 \n"
81 -
82 - " lw %1, 12(%2) \n"
83 - " addu %0, $1 \n"
84 - " addu %0, %1 \n"
85 - " sltu $1, %0, %1 \n"
86 -
87 - " lw %1, 0(%3) \n"
88 - " addu %0, $1 \n"
89 - " addu %0, %1 \n"
90 - " sltu $1, %0, %1 \n"
91 -
92 - " lw %1, 4(%3) \n"
93 - " addu %0, $1 \n"
94 - " addu %0, %1 \n"
95 - " sltu $1, %0, %1 \n"
96 -
97 - " lw %1, 8(%3) \n"
98 - " addu %0, $1 \n"
99 - " addu %0, %1 \n"
100 - " sltu $1, %0, %1 \n"
101 -
102 - " lw %1, 12(%3) \n"
103 - " addu %0, $1 \n"
104 - " addu %0, %1 \n"
105 - " sltu $1, %0, %1 \n"
106 -
107 - " addu %0, $1 # Add final carry\n"
108 - " .set pop"
109 - : "=&r" (sum), "=&r" (tmp)
110 - : "r" (saddr), "r" (daddr),
111 - "0" (htonl(len)), "r" (htonl(proto)), "r" (sum));
112 -
113 - return csum_fold(sum);
114 -}
115 -
116 #include <asm-generic/checksum.h>
117 #endif /* CONFIG_GENERIC_CSUM */
118
119 --- a/include/uapi/linux/ip.h
120 +++ b/include/uapi/linux/ip.h
121 @@ -103,7 +103,7 @@ struct iphdr {
122 __be32 saddr;
123 __be32 daddr;
124 /*The options start here. */
125 -};
126 +} __attribute__((packed, aligned(2)));
127
128
129 struct ip_auth_hdr {
130 --- a/include/uapi/linux/ipv6.h
131 +++ b/include/uapi/linux/ipv6.h
132 @@ -131,7 +131,7 @@ struct ipv6hdr {
133
134 struct in6_addr saddr;
135 struct in6_addr daddr;
136 -};
137 +} __attribute__((packed, aligned(2)));
138
139
140 /* index values for the variables in ipv6_devconf */
141 --- a/include/uapi/linux/tcp.h
142 +++ b/include/uapi/linux/tcp.h
143 @@ -55,7 +55,7 @@ struct tcphdr {
144 __be16 window;
145 __sum16 check;
146 __be16 urg_ptr;
147 -};
148 +} __attribute__((packed, aligned(2)));
149
150 /*
151 * The union cast uses a gcc extension to avoid aliasing problems
152 @@ -65,7 +65,7 @@ struct tcphdr {
153 union tcp_word_hdr {
154 struct tcphdr hdr;
155 __be32 words[5];
156 -};
157 +} __attribute__((packed, aligned(2)));
158
159 #define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3])
160
161 --- a/include/uapi/linux/udp.h
162 +++ b/include/uapi/linux/udp.h
163 @@ -25,7 +25,7 @@ struct udphdr {
164 __be16 dest;
165 __be16 len;
166 __sum16 check;
167 -};
168 +} __attribute__((packed, aligned(2)));
169
170 /* UDP socket options */
171 #define UDP_CORK 1 /* Never send partially complete segments */
172 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
173 +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
174 @@ -48,8 +48,8 @@ static bool ipv4_pkt_to_tuple(const stru
175 if (ap == NULL)
176 return false;
177
178 - tuple->src.u3.ip = ap[0];
179 - tuple->dst.u3.ip = ap[1];
180 + tuple->src.u3.ip = net_hdr_word(ap++);
181 + tuple->dst.u3.ip = net_hdr_word(ap);
182
183 return true;
184 }
185 --- a/include/uapi/linux/icmp.h
186 +++ b/include/uapi/linux/icmp.h
187 @@ -82,7 +82,7 @@ struct icmphdr {
188 } frag;
189 __u8 reserved[4];
190 } un;
191 -};
192 +} __attribute__((packed, aligned(2)));
193
194
195 /*
196 --- a/include/uapi/linux/in6.h
197 +++ b/include/uapi/linux/in6.h
198 @@ -43,7 +43,7 @@ struct in6_addr {
199 #define s6_addr16 in6_u.u6_addr16
200 #define s6_addr32 in6_u.u6_addr32
201 #endif
202 -};
203 +} __attribute__((packed, aligned(2)));
204 #endif /* __UAPI_DEF_IN6_ADDR */
205
206 #if __UAPI_DEF_SOCKADDR_IN6
207 --- a/net/ipv6/tcp_ipv6.c
208 +++ b/net/ipv6/tcp_ipv6.c
209 @@ -39,6 +39,7 @@
210 #include <linux/ipsec.h>
211 #include <linux/times.h>
212 #include <linux/slab.h>
213 +#include <asm/unaligned.h>
214 #include <linux/uaccess.h>
215 #include <linux/ipv6.h>
216 #include <linux/icmpv6.h>
217 @@ -819,10 +820,10 @@ static void tcp_v6_send_response(const s
218 topt = (__be32 *)(t1 + 1);
219
220 if (tsecr) {
221 - *topt++ = htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
222 - (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP);
223 - *topt++ = htonl(tsval);
224 - *topt++ = htonl(tsecr);
225 + put_unaligned_be32((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
226 + (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP, topt++);
227 + put_unaligned_be32(tsval, topt++);
228 + put_unaligned_be32(tsecr, topt++);
229 }
230
231 #ifdef CONFIG_TCP_MD5SIG
232 --- a/include/linux/ipv6.h
233 +++ b/include/linux/ipv6.h
234 @@ -6,6 +6,7 @@
235
236 #define ipv6_optlen(p) (((p)->hdrlen+1) << 3)
237 #define ipv6_authlen(p) (((p)->hdrlen+2) << 2)
238 +
239 /*
240 * This structure contains configuration options per IPv6 link.
241 */
242 --- a/net/ipv6/datagram.c
243 +++ b/net/ipv6/datagram.c
244 @@ -485,7 +485,7 @@ int ipv6_recv_error(struct sock *sk, str
245 ipv6_iface_scope_id(&sin->sin6_addr,
246 IP6CB(skb)->iif);
247 } else {
248 - ipv6_addr_set_v4mapped(*(__be32 *)(nh + serr->addr_offset),
249 + ipv6_addr_set_v4mapped(net_hdr_word(nh + serr->addr_offset),
250 &sin->sin6_addr);
251 sin->sin6_scope_id = 0;
252 }
253 @@ -836,12 +836,12 @@ int ip6_datagram_send_ctl(struct net *ne
254 }
255
256 if (fl6->flowlabel&IPV6_FLOWINFO_MASK) {
257 - if ((fl6->flowlabel^*(__be32 *)CMSG_DATA(cmsg))&~IPV6_FLOWINFO_MASK) {
258 + if ((fl6->flowlabel^net_hdr_word(CMSG_DATA(cmsg)))&~IPV6_FLOWINFO_MASK) {
259 err = -EINVAL;
260 goto exit_f;
261 }
262 }
263 - fl6->flowlabel = IPV6_FLOWINFO_MASK & *(__be32 *)CMSG_DATA(cmsg);
264 + fl6->flowlabel = IPV6_FLOWINFO_MASK & net_hdr_word(CMSG_DATA(cmsg));
265 break;
266
267 case IPV6_2292HOPOPTS:
268 --- a/net/ipv6/ip6_gre.c
269 +++ b/net/ipv6/ip6_gre.c
270 @@ -397,7 +397,7 @@ static void ip6gre_err(struct sk_buff *s
271 return;
272 ipv6h = (const struct ipv6hdr *)skb->data;
273 greh = (const struct gre_base_hdr *)(skb->data + offset);
274 - key = key_off ? *(__be32 *)(skb->data + key_off) : 0;
275 + key = key_off ? net_hdr_word((__be32 *)(skb->data + key_off)) : 0;
276
277 t = ip6gre_tunnel_lookup(skb->dev, &ipv6h->daddr, &ipv6h->saddr,
278 key, greh->protocol);
279 --- a/net/ipv6/exthdrs.c
280 +++ b/net/ipv6/exthdrs.c
281 @@ -733,7 +733,7 @@ static bool ipv6_hop_jumbo(struct sk_buf
282 goto drop;
283 }
284
285 - pkt_len = ntohl(*(__be32 *)(nh + optoff + 2));
286 + pkt_len = ntohl(net_hdr_word(nh + optoff + 2));
287 if (pkt_len <= IPV6_MAXPLEN) {
288 __IP6_INC_STATS(net, ipv6_skb_idev(skb),
289 IPSTATS_MIB_INHDRERRORS);
290 --- a/include/linux/types.h
291 +++ b/include/linux/types.h
292 @@ -229,5 +229,11 @@ struct callback_head {
293 typedef void (*rcu_callback_t)(struct rcu_head *head);
294 typedef void (*call_rcu_func_t)(struct rcu_head *head, rcu_callback_t func);
295
296 +struct net_hdr_word {
297 + u32 words[1];
298 +} __attribute__((packed, aligned(2)));
299 +
300 +#define net_hdr_word(_p) (((struct net_hdr_word *) (_p))->words[0])
301 +
302 #endif /* __ASSEMBLY__ */
303 #endif /* _LINUX_TYPES_H */
304 --- a/net/ipv4/af_inet.c
305 +++ b/net/ipv4/af_inet.c
306 @@ -1351,8 +1351,8 @@ struct sk_buff **inet_gro_receive(struct
307 if (unlikely(ip_fast_csum((u8 *)iph, 5)))
308 goto out_unlock;
309
310 - id = ntohl(*(__be32 *)&iph->id);
311 - flush = (u16)((ntohl(*(__be32 *)iph) ^ skb_gro_len(skb)) | (id & ~IP_DF));
312 + id = ntohl(net_hdr_word(&iph->id));
313 + flush = (u16)((ntohl(net_hdr_word(iph)) ^ skb_gro_len(skb)) | (id & ~IP_DF));
314 id >>= 16;
315
316 for (p = *head; p; p = p->next) {
317 --- a/net/ipv4/route.c
318 +++ b/net/ipv4/route.c
319 @@ -465,7 +465,7 @@ static struct neighbour *ipv4_neigh_look
320 else if (skb)
321 pkey = &ip_hdr(skb)->daddr;
322
323 - n = __ipv4_neigh_lookup(dev, *(__force u32 *)pkey);
324 + n = __ipv4_neigh_lookup(dev, net_hdr_word(pkey));
325 if (n)
326 return n;
327 return neigh_create(&arp_tbl, pkey, dev);
328 --- a/net/ipv4/tcp_output.c
329 +++ b/net/ipv4/tcp_output.c
330 @@ -454,48 +454,53 @@ static void tcp_options_write(__be32 *pt
331 u16 options = opts->options; /* mungable copy */
332
333 if (unlikely(OPTION_MD5 & options)) {
334 - *ptr++ = htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
335 - (TCPOPT_MD5SIG << 8) | TCPOLEN_MD5SIG);
336 + net_hdr_word(ptr++) =
337 + htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
338 + (TCPOPT_MD5SIG << 8) | TCPOLEN_MD5SIG);
339 /* overload cookie hash location */
340 opts->hash_location = (__u8 *)ptr;
341 ptr += 4;
342 }
343
344 if (unlikely(opts->mss)) {
345 - *ptr++ = htonl((TCPOPT_MSS << 24) |
346 - (TCPOLEN_MSS << 16) |
347 - opts->mss);
348 + net_hdr_word(ptr++) =
349 + htonl((TCPOPT_MSS << 24) | (TCPOLEN_MSS << 16) |
350 + opts->mss);
351 }
352
353 if (likely(OPTION_TS & options)) {
354 if (unlikely(OPTION_SACK_ADVERTISE & options)) {
355 - *ptr++ = htonl((TCPOPT_SACK_PERM << 24) |
356 - (TCPOLEN_SACK_PERM << 16) |
357 - (TCPOPT_TIMESTAMP << 8) |
358 - TCPOLEN_TIMESTAMP);
359 + net_hdr_word(ptr++) =
360 + htonl((TCPOPT_SACK_PERM << 24) |
361 + (TCPOLEN_SACK_PERM << 16) |
362 + (TCPOPT_TIMESTAMP << 8) |
363 + TCPOLEN_TIMESTAMP);
364 options &= ~OPTION_SACK_ADVERTISE;
365 } else {
366 - *ptr++ = htonl((TCPOPT_NOP << 24) |
367 - (TCPOPT_NOP << 16) |
368 - (TCPOPT_TIMESTAMP << 8) |
369 - TCPOLEN_TIMESTAMP);
370 + net_hdr_word(ptr++) =
371 + htonl((TCPOPT_NOP << 24) |
372 + (TCPOPT_NOP << 16) |
373 + (TCPOPT_TIMESTAMP << 8) |
374 + TCPOLEN_TIMESTAMP);
375 }
376 - *ptr++ = htonl(opts->tsval);
377 - *ptr++ = htonl(opts->tsecr);
378 + net_hdr_word(ptr++) = htonl(opts->tsval);
379 + net_hdr_word(ptr++) = htonl(opts->tsecr);
380 }
381
382 if (unlikely(OPTION_SACK_ADVERTISE & options)) {
383 - *ptr++ = htonl((TCPOPT_NOP << 24) |
384 - (TCPOPT_NOP << 16) |
385 - (TCPOPT_SACK_PERM << 8) |
386 - TCPOLEN_SACK_PERM);
387 + net_hdr_word(ptr++) =
388 + htonl((TCPOPT_NOP << 24) |
389 + (TCPOPT_NOP << 16) |
390 + (TCPOPT_SACK_PERM << 8) |
391 + TCPOLEN_SACK_PERM);
392 }
393
394 if (unlikely(OPTION_WSCALE & options)) {
395 - *ptr++ = htonl((TCPOPT_NOP << 24) |
396 - (TCPOPT_WINDOW << 16) |
397 - (TCPOLEN_WINDOW << 8) |
398 - opts->ws);
399 + net_hdr_word(ptr++) =
400 + htonl((TCPOPT_NOP << 24) |
401 + (TCPOPT_WINDOW << 16) |
402 + (TCPOLEN_WINDOW << 8) |
403 + opts->ws);
404 }
405
406 if (unlikely(opts->num_sack_blocks)) {
407 @@ -503,16 +508,17 @@ static void tcp_options_write(__be32 *pt
408 tp->duplicate_sack : tp->selective_acks;
409 int this_sack;
410
411 - *ptr++ = htonl((TCPOPT_NOP << 24) |
412 - (TCPOPT_NOP << 16) |
413 - (TCPOPT_SACK << 8) |
414 - (TCPOLEN_SACK_BASE + (opts->num_sack_blocks *
415 + net_hdr_word(ptr++) =
416 + htonl((TCPOPT_NOP << 24) |
417 + (TCPOPT_NOP << 16) |
418 + (TCPOPT_SACK << 8) |
419 + (TCPOLEN_SACK_BASE + (opts->num_sack_blocks *
420 TCPOLEN_SACK_PERBLOCK)));
421
422 for (this_sack = 0; this_sack < opts->num_sack_blocks;
423 ++this_sack) {
424 - *ptr++ = htonl(sp[this_sack].start_seq);
425 - *ptr++ = htonl(sp[this_sack].end_seq);
426 + net_hdr_word(ptr++) = htonl(sp[this_sack].start_seq);
427 + net_hdr_word(ptr++) = htonl(sp[this_sack].end_seq);
428 }
429
430 tp->rx_opt.dsack = 0;
431 @@ -525,13 +531,14 @@ static void tcp_options_write(__be32 *pt
432
433 if (foc->exp) {
434 len = TCPOLEN_EXP_FASTOPEN_BASE + foc->len;
435 - *ptr = htonl((TCPOPT_EXP << 24) | (len << 16) |
436 + net_hdr_word(ptr) =
437 + htonl((TCPOPT_EXP << 24) | (len << 16) |
438 TCPOPT_FASTOPEN_MAGIC);
439 p += TCPOLEN_EXP_FASTOPEN_BASE;
440 } else {
441 len = TCPOLEN_FASTOPEN_BASE + foc->len;
442 - *p++ = TCPOPT_FASTOPEN;
443 - *p++ = len;
444 + net_hdr_word(p++) = TCPOPT_FASTOPEN;
445 + net_hdr_word(p++) = len;
446 }
447
448 memcpy(p, foc->val, foc->len);
449 --- a/net/ipv4/igmp.c
450 +++ b/net/ipv4/igmp.c
451 @@ -537,7 +537,7 @@ static struct sk_buff *add_grec(struct s
452 if (!skb)
453 return NULL;
454 psrc = skb_put(skb, sizeof(__be32));
455 - *psrc = psf->sf_inaddr;
456 + net_hdr_word(psrc) = psf->sf_inaddr;
457 scount++; stotal++;
458 if ((type == IGMPV3_ALLOW_NEW_SOURCES ||
459 type == IGMPV3_BLOCK_OLD_SOURCES) && psf->sf_crcount) {
460 --- a/include/uapi/linux/igmp.h
461 +++ b/include/uapi/linux/igmp.h
462 @@ -33,7 +33,7 @@ struct igmphdr {
463 __u8 code; /* For newer IGMP */
464 __sum16 csum;
465 __be32 group;
466 -};
467 +} __attribute__((packed, aligned(2)));
468
469 /* V3 group record types [grec_type] */
470 #define IGMPV3_MODE_IS_INCLUDE 1
471 @@ -49,7 +49,7 @@ struct igmpv3_grec {
472 __be16 grec_nsrcs;
473 __be32 grec_mca;
474 __be32 grec_src[0];
475 -};
476 +} __attribute__((packed, aligned(2)));
477
478 struct igmpv3_report {
479 __u8 type;
480 @@ -58,7 +58,7 @@ struct igmpv3_report {
481 __be16 resv2;
482 __be16 ngrec;
483 struct igmpv3_grec grec[0];
484 -};
485 +} __attribute__((packed, aligned(2)));
486
487 struct igmpv3_query {
488 __u8 type;
489 @@ -79,7 +79,7 @@ struct igmpv3_query {
490 __u8 qqic;
491 __be16 nsrcs;
492 __be32 srcs[0];
493 -};
494 +} __attribute__((packed, aligned(2)));
495
496 #define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* From RFC1112 */
497 #define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Ditto */
498 --- a/net/core/flow_dissector.c
499 +++ b/net/core/flow_dissector.c
500 @@ -108,7 +108,7 @@ __be32 __skb_flow_get_ports(const struct
501 ports = __skb_header_pointer(skb, thoff + poff,
502 sizeof(_ports), data, hlen, &_ports);
503 if (ports)
504 - return *ports;
505 + return (__be32)net_hdr_word(ports);
506 }
507
508 return 0;
509 --- a/include/uapi/linux/icmpv6.h
510 +++ b/include/uapi/linux/icmpv6.h
511 @@ -77,7 +77,7 @@ struct icmp6hdr {
512 #define icmp6_addrconf_other icmp6_dataun.u_nd_ra.other
513 #define icmp6_rt_lifetime icmp6_dataun.u_nd_ra.rt_lifetime
514 #define icmp6_router_pref icmp6_dataun.u_nd_ra.router_pref
515 -};
516 +} __attribute__((packed, aligned(2)));
517
518
519 #define ICMPV6_ROUTER_PREF_LOW 0x3
520 --- a/include/net/ndisc.h
521 +++ b/include/net/ndisc.h
522 @@ -89,7 +89,7 @@ struct ra_msg {
523 struct icmp6hdr icmph;
524 __be32 reachable_time;
525 __be32 retrans_timer;
526 -};
527 +} __attribute__((packed, aligned(2)));
528
529 struct rd_msg {
530 struct icmp6hdr icmph;
531 @@ -368,10 +368,10 @@ static inline u32 ndisc_hashfn(const voi
532 {
533 const u32 *p32 = pkey;
534
535 - return (((p32[0] ^ hash32_ptr(dev)) * hash_rnd[0]) +
536 - (p32[1] * hash_rnd[1]) +
537 - (p32[2] * hash_rnd[2]) +
538 - (p32[3] * hash_rnd[3]));
539 + return (((net_hdr_word(&p32[0]) ^ hash32_ptr(dev)) * hash_rnd[0]) +
540 + (net_hdr_word(&p32[1]) * hash_rnd[1]) +
541 + (net_hdr_word(&p32[2]) * hash_rnd[2]) +
542 + (net_hdr_word(&p32[3]) * hash_rnd[3]));
543 }
544
545 static inline struct neighbour *__ipv6_neigh_lookup_noref(struct net_device *dev, const void *pkey)
546 --- a/net/sched/cls_u32.c
547 +++ b/net/sched/cls_u32.c
548 @@ -165,7 +165,7 @@ next_knode:
549 data = skb_header_pointer(skb, toff, 4, &hdata);
550 if (!data)
551 goto out;
552 - if ((*data ^ key->val) & key->mask) {
553 + if ((net_hdr_word(data) ^ key->val) & key->mask) {
554 n = rcu_dereference_bh(n->next);
555 goto next_knode;
556 }
557 @@ -218,8 +218,8 @@ check_terminal:
558 &hdata);
559 if (!data)
560 goto out;
561 - sel = ht->divisor & u32_hash_fold(*data, &n->sel,
562 - n->fshift);
563 + sel = ht->divisor & u32_hash_fold(net_hdr_word(data),
564 + &n->sel, n->fshift);
565 }
566 if (!(n->sel.flags & (TC_U32_VAROFFSET | TC_U32_OFFSET | TC_U32_EAT)))
567 goto next_ht;
568 --- a/net/ipv6/ip6_offload.c
569 +++ b/net/ipv6/ip6_offload.c
570 @@ -220,7 +220,7 @@ static struct sk_buff **ipv6_gro_receive
571 continue;
572
573 iph2 = (struct ipv6hdr *)(p->data + off);
574 - first_word = *(__be32 *)iph ^ *(__be32 *)iph2;
575 + first_word = net_hdr_word(iph) ^ net_hdr_word(iph2);
576
577 /* All fields must match except length and Traffic Class.
578 * XXX skbs on the gro_list have all been parsed and pulled
579 --- a/include/net/addrconf.h
580 +++ b/include/net/addrconf.h
581 @@ -47,7 +47,7 @@ struct prefix_info {
582 __be32 reserved2;
583
584 struct in6_addr prefix;
585 -};
586 +} __attribute__((packed, aligned(2)));
587
588 #include <linux/netdevice.h>
589 #include <net/if_inet6.h>
590 --- a/include/net/inet_ecn.h
591 +++ b/include/net/inet_ecn.h
592 @@ -125,9 +125,9 @@ static inline int IP6_ECN_set_ce(struct
593 if (INET_ECN_is_not_ect(ipv6_get_dsfield(iph)))
594 return 0;
595
596 - from = *(__be32 *)iph;
597 + from = net_hdr_word(iph);
598 to = from | htonl(INET_ECN_CE << 20);
599 - *(__be32 *)iph = to;
600 + net_hdr_word(iph) = to;
601 if (skb->ip_summed == CHECKSUM_COMPLETE)
602 skb->csum = csum_add(csum_sub(skb->csum, (__force __wsum)from),
603 (__force __wsum)to);
604 @@ -136,7 +136,7 @@ static inline int IP6_ECN_set_ce(struct
605
606 static inline void IP6_ECN_clear(struct ipv6hdr *iph)
607 {
608 - *(__be32*)iph &= ~htonl(INET_ECN_MASK << 20);
609 + net_hdr_word(iph) &= ~htonl(INET_ECN_MASK << 20);
610 }
611
612 static inline void ipv6_copy_dscp(unsigned int dscp, struct ipv6hdr *inner)
613 --- a/include/net/ipv6.h
614 +++ b/include/net/ipv6.h
615 @@ -108,7 +108,7 @@ struct frag_hdr {
616 __u8 reserved;
617 __be16 frag_off;
618 __be32 identification;
619 -};
620 +} __attribute__((packed, aligned(2)));
621
622 #define IP6_MF 0x0001
623 #define IP6_OFFSET 0xFFF8
624 @@ -437,8 +437,8 @@ static inline void __ipv6_addr_set_half(
625 }
626 #endif
627 #endif
628 - addr[0] = wh;
629 - addr[1] = wl;
630 + net_hdr_word(&addr[0]) = wh;
631 + net_hdr_word(&addr[1]) = wl;
632 }
633
634 static inline void ipv6_addr_set(struct in6_addr *addr,
635 @@ -497,6 +497,8 @@ static inline bool ipv6_prefix_equal(con
636 const __be32 *a1 = addr1->s6_addr32;
637 const __be32 *a2 = addr2->s6_addr32;
638 unsigned int pdw, pbi;
639 + /* Used for last <32-bit fraction of prefix */
640 + u32 pbia1, pbia2;
641
642 /* check complete u32 in prefix */
643 pdw = prefixlen >> 5;
644 @@ -505,7 +507,9 @@ static inline bool ipv6_prefix_equal(con
645
646 /* check incomplete u32 in prefix */
647 pbi = prefixlen & 0x1f;
648 - if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
649 + pbia1 = net_hdr_word(&a1[pdw]);
650 + pbia2 = net_hdr_word(&a2[pdw]);
651 + if (pbi && ((pbia1 ^ pbia2) & htonl((0xffffffff) << (32 - pbi))))
652 return false;
653
654 return true;
655 @@ -634,13 +638,13 @@ static inline void ipv6_addr_set_v4mappe
656 */
657 static inline int __ipv6_addr_diff32(const void *token1, const void *token2, int addrlen)
658 {
659 - const __be32 *a1 = token1, *a2 = token2;
660 + const struct in6_addr *a1 = token1, *a2 = token2;
661 int i;
662
663 addrlen >>= 2;
664
665 for (i = 0; i < addrlen; i++) {
666 - __be32 xb = a1[i] ^ a2[i];
667 + __be32 xb = a1->s6_addr32[i] ^ a2->s6_addr32[i];
668 if (xb)
669 return i * 32 + 31 - __fls(ntohl(xb));
670 }
671 @@ -809,17 +813,18 @@ static inline int ip6_default_np_autolab
672 static inline void ip6_flow_hdr(struct ipv6hdr *hdr, unsigned int tclass,
673 __be32 flowlabel)
674 {
675 - *(__be32 *)hdr = htonl(0x60000000 | (tclass << 20)) | flowlabel;
676 + net_hdr_word((__be32 *)hdr) =
677 + htonl(0x60000000 | (tclass << 20)) | flowlabel;
678 }
679
680 static inline __be32 ip6_flowinfo(const struct ipv6hdr *hdr)
681 {
682 - return *(__be32 *)hdr & IPV6_FLOWINFO_MASK;
683 + return net_hdr_word((__be32 *)hdr) & IPV6_FLOWINFO_MASK;
684 }
685
686 static inline __be32 ip6_flowlabel(const struct ipv6hdr *hdr)
687 {
688 - return *(__be32 *)hdr & IPV6_FLOWLABEL_MASK;
689 + return net_hdr_word((__be32 *)hdr) & IPV6_FLOWLABEL_MASK;
690 }
691
692 static inline u8 ip6_tclass(__be32 flowinfo)
693 --- a/include/net/secure_seq.h
694 +++ b/include/net/secure_seq.h
695 @@ -3,6 +3,7 @@
696 #define _NET_SECURE_SEQ
697
698 #include <linux/types.h>
699 +#include <linux/in6.h>
700
701 u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport);
702 u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr,
703 --- a/include/uapi/linux/in.h
704 +++ b/include/uapi/linux/in.h
705 @@ -84,7 +84,7 @@ enum {
706 /* Internet address. */
707 struct in_addr {
708 __be32 s_addr;
709 -};
710 +} __attribute__((packed, aligned(2)));
711 #endif
712
713 #define IP_TOS 1
714 --- a/net/ipv6/ip6_fib.c
715 +++ b/net/ipv6/ip6_fib.c
716 @@ -137,7 +137,7 @@ static __be32 addr_bit_set(const void *t
717 * See include/asm-generic/bitops/le.h.
718 */
719 return (__force __be32)(1 << ((~fn_bit ^ BITOP_BE32_SWIZZLE) & 0x1f)) &
720 - addr[fn_bit >> 5];
721 + net_hdr_word(&addr[fn_bit >> 5]);
722 }
723
724 static struct fib6_node *node_alloc(void)
725 --- a/net/netfilter/nf_conntrack_proto_tcp.c
726 +++ b/net/netfilter/nf_conntrack_proto_tcp.c
727 @@ -447,7 +447,7 @@ static void tcp_sack(const struct sk_buf
728
729 /* Fast path for timestamp-only option */
730 if (length == TCPOLEN_TSTAMP_ALIGNED
731 - && *(__be32 *)ptr == htonl((TCPOPT_NOP << 24)
732 + && net_hdr_word(ptr) == htonl((TCPOPT_NOP << 24)
733 | (TCPOPT_NOP << 16)
734 | (TCPOPT_TIMESTAMP << 8)
735 | TCPOLEN_TIMESTAMP))
736 --- a/net/xfrm/xfrm_input.c
737 +++ b/net/xfrm/xfrm_input.c
738 @@ -193,8 +193,8 @@ int xfrm_parse_spi(struct sk_buff *skb,
739 if (!pskb_may_pull(skb, hlen))
740 return -EINVAL;
741
742 - *spi = *(__be32 *)(skb_transport_header(skb) + offset);
743 - *seq = *(__be32 *)(skb_transport_header(skb) + offset_seq);
744 + *spi = net_hdr_word(skb_transport_header(skb) + offset);
745 + *seq = net_hdr_word(skb_transport_header(skb) + offset_seq);
746 return 0;
747 }
748 EXPORT_SYMBOL(xfrm_parse_spi);
749 --- a/net/ipv4/tcp_input.c
750 +++ b/net/ipv4/tcp_input.c
751 @@ -3858,14 +3858,16 @@ static bool tcp_parse_aligned_timestamp(
752 {
753 const __be32 *ptr = (const __be32 *)(th + 1);
754
755 - if (*ptr == htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16)
756 - | (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP)) {
757 + if (net_hdr_word(ptr) ==
758 + htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
759 + (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP)) {
760 tp->rx_opt.saw_tstamp = 1;
761 ++ptr;
762 - tp->rx_opt.rcv_tsval = ntohl(*ptr);
763 + tp->rx_opt.rcv_tsval = get_unaligned_be32(ptr);
764 ++ptr;
765 - if (*ptr)
766 - tp->rx_opt.rcv_tsecr = ntohl(*ptr) - tp->tsoffset;
767 + if (net_hdr_word(ptr))
768 + tp->rx_opt.rcv_tsecr = get_unaligned_be32(ptr) -
769 + tp->tsoffset;
770 else
771 tp->rx_opt.rcv_tsecr = 0;
772 return true;
773 --- a/include/uapi/linux/if_pppox.h
774 +++ b/include/uapi/linux/if_pppox.h
775 @@ -51,6 +51,7 @@ struct pppoe_addr {
776 */
777 struct pptp_addr {
778 __u16 call_id;
779 + __u16 pad;
780 struct in_addr sin_addr;
781 };
782
783 --- a/net/ipv6/netfilter/nf_log_ipv6.c
784 +++ b/net/ipv6/netfilter/nf_log_ipv6.c
785 @@ -66,9 +66,9 @@ static void dump_ipv6_packet(struct nf_l
786 /* Max length: 44 "LEN=65535 TC=255 HOPLIMIT=255 FLOWLBL=FFFFF " */
787 nf_log_buf_add(m, "LEN=%zu TC=%u HOPLIMIT=%u FLOWLBL=%u ",
788 ntohs(ih->payload_len) + sizeof(struct ipv6hdr),
789 - (ntohl(*(__be32 *)ih) & 0x0ff00000) >> 20,
790 + (ntohl(net_hdr_word(ih)) & 0x0ff00000) >> 20,
791 ih->hop_limit,
792 - (ntohl(*(__be32 *)ih) & 0x000fffff));
793 + (ntohl(net_hdr_word(ih)) & 0x000fffff));
794
795 fragment = 0;
796 ptr = ip6hoff + sizeof(struct ipv6hdr);
797 --- a/include/net/neighbour.h
798 +++ b/include/net/neighbour.h
799 @@ -265,8 +265,10 @@ static inline bool neigh_key_eq128(const
800 const u32 *n32 = (const u32 *)n->primary_key;
801 const u32 *p32 = pkey;
802
803 - return ((n32[0] ^ p32[0]) | (n32[1] ^ p32[1]) |
804 - (n32[2] ^ p32[2]) | (n32[3] ^ p32[3])) == 0;
805 + return ((n32[0] ^ net_hdr_word(&p32[0])) |
806 + (n32[1] ^ net_hdr_word(&p32[1])) |
807 + (n32[2] ^ net_hdr_word(&p32[2])) |
808 + (n32[3] ^ net_hdr_word(&p32[3]))) == 0;
809 }
810
811 static inline struct neighbour *___neigh_lookup_noref(
812 --- a/include/uapi/linux/netfilter_arp/arp_tables.h
813 +++ b/include/uapi/linux/netfilter_arp/arp_tables.h
814 @@ -70,7 +70,7 @@ struct arpt_arp {
815 __u8 flags;
816 /* Inverse flags */
817 __u16 invflags;
818 -};
819 +} __attribute__((aligned(4)));
820
821 /* Values for "flag" field in struct arpt_ip (general arp structure).
822 * No flags defined yet.
823 --- a/net/core/utils.c
824 +++ b/net/core/utils.c
825 @@ -424,8 +424,14 @@ void inet_proto_csum_replace16(__sum16 *
826 bool pseudohdr)
827 {
828 __be32 diff[] = {
829 - ~from[0], ~from[1], ~from[2], ~from[3],
830 - to[0], to[1], to[2], to[3],
831 + ~net_hdr_word(&from[0]),
832 + ~net_hdr_word(&from[1]),
833 + ~net_hdr_word(&from[2]),
834 + ~net_hdr_word(&from[3]),
835 + net_hdr_word(&to[0]),
836 + net_hdr_word(&to[1]),
837 + net_hdr_word(&to[2]),
838 + net_hdr_word(&to[3]),
839 };
840 if (skb->ip_summed != CHECKSUM_PARTIAL) {
841 *sum = csum_fold(csum_partial(diff, sizeof(diff),
842 --- a/drivers/net/vxlan.c
843 +++ b/drivers/net/vxlan.c
844 @@ -1857,15 +1857,15 @@ static int vxlan_build_skb(struct sk_buf
845 return err;
846
847 vxh = __skb_push(skb, sizeof(*vxh));
848 - vxh->vx_flags = VXLAN_HF_VNI;
849 - vxh->vx_vni = vxlan_vni_field(vni);
850 + net_hdr_word(&vxh->vx_flags) = VXLAN_HF_VNI;
851 + net_hdr_word(&vxh->vx_vni) = vxlan_vni_field(vni);
852
853 if (type & SKB_GSO_TUNNEL_REMCSUM) {
854 unsigned int start;
855
856 start = skb_checksum_start_offset(skb) - sizeof(struct vxlanhdr);
857 - vxh->vx_vni |= vxlan_compute_rco(start, skb->csum_offset);
858 - vxh->vx_flags |= VXLAN_HF_RCO;
859 + net_hdr_word(&vxh->vx_vni) |= vxlan_compute_rco(start, skb->csum_offset);
860 + net_hdr_word(&vxh->vx_flags) |= VXLAN_HF_RCO;
861
862 if (!skb_is_gso(skb)) {
863 skb->ip_summed = CHECKSUM_NONE;
864 --- a/include/linux/etherdevice.h
865 +++ b/include/linux/etherdevice.h
866 @@ -480,7 +480,7 @@ static inline bool is_etherdev_addr(cons
867 * @b: Pointer to Ethernet header
868 *
869 * Compare two Ethernet headers, returns 0 if equal.
870 - * This assumes that the network header (i.e., IP header) is 4-byte
871 + * This assumes that the network header (i.e., IP header) is 2-byte
872 * aligned OR the platform can handle unaligned access. This is the
873 * case for all packets coming into netif_receive_skb or similar
874 * entry points.
875 @@ -503,11 +503,12 @@ static inline unsigned long compare_ethe
876 fold |= *(unsigned long *)(a + 6) ^ *(unsigned long *)(b + 6);
877 return fold;
878 #else
879 - u32 *a32 = (u32 *)((u8 *)a + 2);
880 - u32 *b32 = (u32 *)((u8 *)b + 2);
881 + const u16 *a16 = a;
882 + const u16 *b16 = b;
883
884 - return (*(u16 *)a ^ *(u16 *)b) | (a32[0] ^ b32[0]) |
885 - (a32[1] ^ b32[1]) | (a32[2] ^ b32[2]);
886 + return (a16[0] ^ b16[0]) | (a16[1] ^ b16[1]) | (a16[2] ^ b16[2]) |
887 + (a16[3] ^ b16[3]) | (a16[4] ^ b16[4]) | (a16[5] ^ b16[5]) |
888 + (a16[6] ^ b16[6]);
889 #endif
890 }
891
892 --- a/net/ipv4/tcp_offload.c
893 +++ b/net/ipv4/tcp_offload.c
894 @@ -226,7 +226,7 @@ struct sk_buff **tcp_gro_receive(struct
895
896 th2 = tcp_hdr(p);
897
898 - if (*(u32 *)&th->source ^ *(u32 *)&th2->source) {
899 + if (net_hdr_word(&th->source) ^ net_hdr_word(&th2->source)) {
900 NAPI_GRO_CB(p)->same_flow = 0;
901 continue;
902 }
903 @@ -244,8 +244,8 @@ found:
904 ~(TCP_FLAG_CWR | TCP_FLAG_FIN | TCP_FLAG_PSH));
905 flush |= (__force int)(th->ack_seq ^ th2->ack_seq);
906 for (i = sizeof(*th); i < thlen; i += 4)
907 - flush |= *(u32 *)((u8 *)th + i) ^
908 - *(u32 *)((u8 *)th2 + i);
909 + flush |= net_hdr_word((u8 *)th + i) ^
910 + net_hdr_word((u8 *)th2 + i);
911
912 /* When we receive our second frame we can made a decision on if we
913 * continue this flow as an atomic flow with a fixed ID or if we use
914 --- a/net/ipv6/netfilter/ip6table_mangle.c
915 +++ b/net/ipv6/netfilter/ip6table_mangle.c
916 @@ -50,7 +50,7 @@ ip6t_mangle_out(struct sk_buff *skb, con
917 hop_limit = ipv6_hdr(skb)->hop_limit;
918
919 /* flowlabel and prio (includes version, which shouldn't change either */
920 - flowlabel = *((u_int32_t *)ipv6_hdr(skb));
921 + flowlabel = net_hdr_word(ipv6_hdr(skb));
922
923 ret = ip6t_do_table(skb, state, state->net->ipv6.ip6table_mangle);
924
925 @@ -59,7 +59,7 @@ ip6t_mangle_out(struct sk_buff *skb, con
926 !ipv6_addr_equal(&ipv6_hdr(skb)->daddr, &daddr) ||
927 skb->mark != mark ||
928 ipv6_hdr(skb)->hop_limit != hop_limit ||
929 - flowlabel != *((u_int32_t *)ipv6_hdr(skb)))) {
930 + flowlabel != net_hdr_word(ipv6_hdr(skb)))) {
931 err = ip6_route_me_harder(state->net, skb);
932 if (err < 0)
933 ret = NF_DROP_ERR(err);