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ar71xx: improve unaligned access patches, add a net_hdr_word() macro which assumes 2-byte aligned access and generates better code than {get,put}_unaligned_cpu32 

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35129 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Felix Fietkau 2013-01-13 14:54:39 +00:00
parent 6c81472528
commit 269f90bce1
1 changed files with 465 additions and 20 deletions
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485
target/linux/ar71xx/patches-3.7/902-unaligned_access_hacks.patch
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@ -1,14 +1,6 @@
--- a/arch/mips/include/asm/checksum.h
+++ b/arch/mips/include/asm/checksum.h
@@ -12,6 +12,7 @@
#define _ASM_CHECKSUM_H
#include <linux/in6.h>
+#include <linux/unaligned/packed_struct.h>
#include <asm/uaccess.h>
@@ -104,26 +105,30 @@ static inline __sum16 ip_fast_csum(const
@@ -104,26 +104,30 @@ static inline __sum16 ip_fast_csum(const
const unsigned int *stop = word + ihl;
unsigned int csum;
int carry;
@ -17,23 +9,23 @@
- csum = word[0];
- csum += word[1];
- carry = (csum < word[1]);
+ csum = __get_unaligned_cpu32(word++);
+ csum = net_hdr_word(word++);
+
+ w = __get_unaligned_cpu32(word++);
+ w = net_hdr_word(word++);
+ csum += w;
+ carry = (csum < w);
csum += carry;
- csum += word[2];
- carry = (csum < word[2]);
+ w = __get_unaligned_cpu32(word++);
+ w = net_hdr_word(word++);
+ csum += w;
+ carry = (csum < w);
csum += carry;
- csum += word[3];
- carry = (csum < word[3]);
+ w = __get_unaligned_cpu32(word++);
+ w = net_hdr_word(word++);
+ csum += w;
+ carry = (csum < w);
csum += carry;
@ -42,7 +34,7 @@
do {
- csum += *word;
- carry = (csum < *word);
+ w = __get_unaligned_cpu32(word++);
+ w = net_hdr_word(word++);
+ csum += w;
+ carry = (csum < w);
csum += carry;
@ -119,8 +111,8 @@
- tuple->src.u3.ip = ap[0];
- tuple->dst.u3.ip = ap[1];
+ tuple->src.u3.ip = __get_unaligned_cpu32(ap++);
+ tuple->dst.u3.ip = __get_unaligned_cpu32(ap);
+ tuple->src.u3.ip = net_hdr_word(ap++);
+ tuple->dst.u3.ip = net_hdr_word(ap);
return true;
}
@ -143,7 +135,7 @@
- if (*ptr == htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16)
- | (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP)) {
+ if (__get_unaligned_cpu32(ptr) ==
+ if (net_hdr_word(ptr) ==
+ htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
+ (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP)) {
tp->rx_opt.saw_tstamp = 1;
@ -177,13 +169,466 @@
#include <linux/mroute6.h>
MODULE_AUTHOR("Cast of dozens");
@@ -880,7 +881,8 @@ static struct sk_buff **ipv6_gro_receive
@@ -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)) ||
@@ -880,7 +881,7 @@ static struct sk_buff **ipv6_gro_receive
continue;
iph2 = ipv6_hdr(p);
- first_word = *(__be32 *)iph ^ *(__be32 *)iph2 ;
+ first_word = __get_unaligned_cpu32((__u32 *) iph) ^
+ __get_unaligned_cpu32((__u32 *) 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/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -59,6 +59,7 @@
#include <net/netlink.h>
#include <asm/uaccess.h>
+#include <asm/unaligned.h>
#ifdef CONFIG_SYSCTL
#include <linux/sysctl.h>
@@ -938,7 +939,7 @@ void ip6_route_input(struct sk_buff *skb
.flowi6_iif = skb->dev->ifindex,
.daddr = iph->daddr,
.saddr = iph->saddr,
- .flowlabel = (* (__be32 *) iph) & IPV6_FLOWINFO_MASK,
+ .flowlabel = net_hdr_word(iph) & IPV6_FLOWINFO_MASK,
.flowi6_mark = skb->mark,
.flowi6_proto = iph->nexthdr,
};
@@ -1108,7 +1109,7 @@ void ip6_update_pmtu(struct sk_buff *skb
fl6.flowi6_flags = 0;
fl6.daddr = iph->daddr;
fl6.saddr = iph->saddr;
- fl6.flowlabel = (*(__be32 *) iph) & IPV6_FLOWINFO_MASK;
+ fl6.flowlabel = net_hdr_word(iph) & IPV6_FLOWINFO_MASK,
dst = ip6_route_output(net, NULL, &fl6);
if (!dst->error)
@@ -1136,7 +1137,7 @@ void ip6_redirect(struct sk_buff *skb, s
fl6.flowi6_flags = 0;
fl6.daddr = iph->daddr;
fl6.saddr = iph->saddr;
- fl6.flowlabel = (*(__be32 *) iph) & IPV6_FLOWINFO_MASK;
+ fl6.flowlabel = net_hdr_word(iph) & IPV6_FLOWINFO_MASK,
dst = ip6_route_output(net, NULL, &fl6);
if (!dst->error)
--- 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>
@@ -851,10 +852,10 @@ static void tcp_v6_send_response(struct
topt = (__be32 *)(t1 + 1);
if (ts) {
- *topt++ = htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
- (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP);
- *topt++ = htonl(tcp_time_stamp);
- *topt++ = htonl(ts);
+ put_unaligned_be32((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
+ (TCPOPT_TIMESTAMP << 8) | TCPOLEN_TIMESTAMP, topt++);
+ put_unaligned_be32(tcp_time_stamp, topt++);
+ put_unaligned_be32(ts, 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
@@ -360,12 +360,12 @@ int ipv6_recv_error(struct sock *sk, str
*(struct in6_addr *)(nh + serr->addr_offset);
if (np->sndflow)
sin->sin6_flowinfo =
- (*(__be32 *)(nh + serr->addr_offset - 24) &
- IPV6_FLOWINFO_MASK);
+ net_hdr_word(nh + serr->addr_offset - 24) &
+ IPV6_FLOWINFO_MASK;
if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
sin->sin6_scope_id = 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);
}
}
@@ -492,9 +492,10 @@ int datagram_recv_ctl(struct sock *sk, s
put_cmsg(msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass);
}
- if (np->rxopt.bits.rxflow && (*(__be32 *)nh & IPV6_FLOWINFO_MASK)) {
- __be32 flowinfo = *(__be32 *)nh & IPV6_FLOWINFO_MASK;
- put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo);
+ if (np->rxopt.bits.rxflow) {
+ __be32 flowinfo = net_hdr_word(nh) & IPV6_FLOWINFO_MASK;
+ if (flowinfo)
+ put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo);
}
/* HbH is allowed only once */
@@ -680,12 +681,12 @@ int datagram_send_ctl(struct net *net, s
}
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
@@ -445,7 +445,7 @@ 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;
@@ -537,11 +537,11 @@ 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;
}
}
@@ -788,7 +788,7 @@ static netdev_tx_t ip6gre_xmit2(struct s
* Push down and install the IP header.
*/
ipv6h = ipv6_hdr(skb);
- *(__be32 *)ipv6h = fl6->flowlabel | htonl(0x60000000);
+ net_hdr_word(ipv6h) = fl6->flowlabel | htonl(0x60000000);
dsfield = INET_ECN_encapsulate(0, dsfield);
ipv6_change_dsfield(ipv6h, ~INET_ECN_MASK, dsfield);
ipv6h->hop_limit = tunnel->parms.hop_limit;
@@ -805,7 +805,7 @@ 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) {
@@ -913,9 +913,9 @@ 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;
@@ -1256,7 +1256,7 @@ static int ip6gre_header(struct sk_buff
struct ipv6hdr *ipv6h = (struct ipv6hdr *)skb_push(skb, t->hlen);
__be16 *p = (__be16 *)(ipv6h+1);
- *(__be32 *)ipv6h = t->fl.u.ip6.flowlabel | htonl(0x60000000);
+ net_hdr_word(ipv6h) = t->fl.u.ip6.flowlabel | htonl(0x60000000);
ipv6h->hop_limit = t->parms.hop_limit;
ipv6h->nexthdr = NEXTHDR_GRE;
ipv6h->saddr = t->parms.laddr;
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -216,7 +216,7 @@ int ip6_xmit(struct sock *sk, struct sk_
if (hlimit < 0)
hlimit = ip6_dst_hoplimit(dst);
- *(__be32 *)hdr = htonl(0x60000000 | (tclass << 20)) | fl6->flowlabel;
+ net_hdr_word(hdr) = htonl(0x60000000 | (tclass << 20)) | fl6->flowlabel;
hdr->payload_len = htons(seg_len);
hdr->nexthdr = proto;
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1110,9 +1110,9 @@ 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
@@ -622,7 +622,7 @@ 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
@@ -211,5 +211,11 @@ 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
@@ -1388,8 +1388,8 @@ 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
@@ -465,7 +465,7 @@ 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
@@ -456,15 +456,17 @@ static void tcp_options_write(__be32 *pt
*/
if (unlikely(OPTION_MD5 & options)) {
if (unlikely(OPTION_COOKIE_EXTENSION & options)) {
- *ptr++ = htonl((TCPOPT_COOKIE << 24) |
- (TCPOLEN_COOKIE_BASE << 16) |
- (TCPOPT_MD5SIG << 8) |
- TCPOLEN_MD5SIG);
+ net_hdr_word(ptr++) =
+ htonl((TCPOPT_COOKIE << 24) |
+ (TCPOLEN_COOKIE_BASE << 16) |
+ (TCPOPT_MD5SIG << 8) |
+ TCPOLEN_MD5SIG);
} else {
- *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);
}
options &= ~OPTION_COOKIE_EXTENSION;
/* overload cookie hash location */
@@ -473,26 +475,28 @@ static void tcp_options_write(__be32 *pt
}
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);
}
/* Specification requires after timestamp, so do it now.
@@ -512,19 +516,20 @@ static void tcp_options_write(__be32 *pt
__u8 *p = (__u8 *)ptr;
/* 16-bit multiple */
- *p++ = TCPOPT_COOKIE;
- *p++ = TCPOLEN_COOKIE_BASE + cookie_size;
- *p++ = *cookie_copy++;
- *p++ = *cookie_copy++;
+ net_hdr_word(p++) = TCPOPT_COOKIE;
+ net_hdr_word(p++) = TCPOLEN_COOKIE_BASE + cookie_size;
+ net_hdr_word(p++) = *cookie_copy++;
+ net_hdr_word(p++) = *cookie_copy++;
ptr++;
cookie_size -= 2;
} else {
/* 32-bit multiple */
- *ptr++ = htonl(((TCPOPT_NOP << 24) |
- (TCPOPT_NOP << 16) |
- (TCPOPT_COOKIE << 8) |
- TCPOLEN_COOKIE_BASE) +
- cookie_size);
+ net_hdr_word(ptr++) =
+ htonl(((TCPOPT_NOP << 24) |
+ (TCPOPT_NOP << 16) |
+ (TCPOPT_COOKIE << 8) |
+ TCPOLEN_COOKIE_BASE) +
+ cookie_size);
}
if (cookie_size > 0) {
@@ -534,17 +539,19 @@ static void tcp_options_write(__be32 *pt
}
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)) {
@@ -552,16 +559,17 @@ 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;
@@ -570,9 +578,10 @@ 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/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -533,7 +533,7 @@ static void ipgre_err(struct sk_buff *sk
return;
if (flags & GRE_KEY)
- key = *(((__be32 *)p) + (grehlen / 4) - 1);
+ key = net_hdr_word(((__be32 *)p) + (grehlen / 4) - 1);
switch (type) {
default: