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[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h

Browse source 
Now the skb->nh union has just one member, .raw, i.e. it is just like the
skb->mac union, strange, no? I'm just leaving it like that till the transport
layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or
->mac_header_offset?), ditto for ->{h,nh}.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo 2007-04-25 17:54:47 -07:00 • committed by David S. Miller
commit 0660e03f6b
59 changed files with 296 additions and 292 deletions
Download patch file Download diff file Expand all files Collapse all files

4
drivers/net/bonding/bond_alb.c
View file

@ -1304,8 +1304,8 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
break;
}
hash_start = (char*)&(skb->nh.ipv6h->daddr);
hash_size = sizeof(skb->nh.ipv6h->daddr);
hash_start = (char *)&(ipv6_hdr(skb)->daddr);
hash_size = sizeof(ipv6_hdr(skb)->daddr);
break;
case ETH_P_IPX:
if (ipx_hdr(skb)->ipx_checksum !=

10
drivers/net/e1000/e1000_main.c
View file

@ -2899,13 +2899,11 @@ e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
cmd_length = E1000_TXD_CMD_IP;
ipcse = skb->h.raw - skb->data - 1;
} else if (skb->protocol == htons(ETH_P_IPV6)) {
skb->nh.ipv6h->payload_len = 0;
ipv6_hdr(skb)->payload_len = 0;
skb->h.th->check =
~csum_ipv6_magic(&skb->nh.ipv6h->saddr,
&skb->nh.ipv6h->daddr,
0,
IPPROTO_TCP,
0);
~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
&ipv6_hdr(skb)->daddr,
0, IPPROTO_TCP, 0);
ipcse = 0;
}
ipcss = skb_network_offset(skb);

8
drivers/s390/net/qeth_eddp.c
View file

@ -479,9 +479,11 @@ qeth_eddp_fill_context_tcp(struct qeth_eddp_context *ctx,
skb->h.raw,
skb->h.th->doff * 4);
else
eddp = qeth_eddp_create_eddp_data(qhdr, (u8 *)skb->nh.ipv6h,
sizeof(struct ipv6hdr),
(u8 *)skb->h.th, skb->h.th->doff*4);
eddp = qeth_eddp_create_eddp_data(qhdr,
skb_network_header(skb),
sizeof(struct ipv6hdr),
skb->h.raw,
skb->h.th->doff * 4);
if (eddp == NULL) {
QETH_DBF_TEXT(trace, 2, "eddpfcnm");

3
drivers/s390/net/qeth_main.c
View file

@ -4053,7 +4053,8 @@ qeth_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
skb->dst->neighbour->primary_key, 16);
} else {
/* fill in destination address used in ip header */
memcpy(hdr->hdr.l3.dest_addr, &skb->nh.ipv6h->daddr, 16);
memcpy(hdr->hdr.l3.dest_addr,
&ipv6_hdr(skb)->daddr, 16);
}
} else { /* passthrough */
if((skb->dev->type == ARPHRD_IEEE802_TR) &&

2
drivers/s390/net/qeth_tso.h
View file

@ -64,7 +64,7 @@ static inline void
qeth_tso_set_tcpip_header(struct qeth_card *card, struct sk_buff *skb)
{
struct iphdr *iph = ip_hdr(skb);
struct ipv6hdr *ip6h = skb->nh.ipv6h;
struct ipv6hdr *ip6h = ipv6_hdr(skb);
struct tcphdr *tcph = skb->h.th;
tcph->check = 0;

5
include/linux/ipv6.h
View file

@ -223,6 +223,11 @@ enum {
#include <net/if_inet6.h> /* struct ipv6_mc_socklist */
#include <net/inet_sock.h>
static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb)
{
return (struct ipv6hdr *)skb_network_header(skb);
}
/*
This structure contains results of exthdrs parsing
as offsets from skb->nh.

1
include/linux/skbuff.h
View file

@ -247,7 +247,6 @@ struct sk_buff {
} h;
union {
struct ipv6hdr *ipv6h;
unsigned char *raw;
} nh;

2
include/net/inet_ecn.h
View file

@ -122,7 +122,7 @@ static inline int INET_ECN_set_ce(struct sk_buff *skb)
case __constant_htons(ETH_P_IPV6):
if (skb_network_header(skb) + sizeof(struct ipv6hdr) <=
skb->tail)
return IP6_ECN_set_ce(skb->nh.ipv6h);
return IP6_ECN_set_ce(ipv6_hdr(skb));
break;
}

6
net/bridge/br_netfilter.c
View file

@ -372,7 +372,7 @@ static struct net_device *setup_pre_routing(struct sk_buff *skb)
/* We only check the length. A bridge shouldn't do any hop-by-hop stuff anyway */
static int check_hbh_len(struct sk_buff *skb)
{
unsigned char *raw = (u8 *) (skb->nh.ipv6h + 1);
unsigned char *raw = (u8 *)(ipv6_hdr(skb) + 1);
u32 pkt_len;
const unsigned char *nh = skb_network_header(skb);
int off = raw - nh;
@ -400,7 +400,7 @@ static int check_hbh_len(struct sk_buff *skb)
goto bad;
pkt_len = ntohl(*(__be32 *) (nh + off + 2));
if (pkt_len <= IPV6_MAXPLEN ||
skb->nh.ipv6h->payload_len)
ipv6_hdr(skb)->payload_len)
goto bad;
if (pkt_len > skb->len - sizeof(struct ipv6hdr))
goto bad;
@ -441,7 +441,7 @@ static unsigned int br_nf_pre_routing_ipv6(unsigned int hook,
if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
goto inhdr_error;
hdr = skb->nh.ipv6h;
hdr = ipv6_hdr(skb);
if (hdr->version != 6)
goto inhdr_error;

2
net/core/pktgen.c
View file

@ -2736,7 +2736,7 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
skb->protocol = protocol;
skb->dev = odev;
skb->pkt_type = PACKET_HOST;
skb->nh.ipv6h = iph;
skb->nh.raw = (unsigned char *)iph;
skb->h.uh = udph;
if (pkt_dev->nfrags <= 0)

32
net/dccp/ipv6.c
View file

@ -84,8 +84,8 @@ static inline __u32 secure_dccpv6_sequence_number(__be32 *saddr, __be32 *daddr,
static inline __u32 dccp_v6_init_sequence(struct sk_buff *skb)
{
return secure_dccpv6_sequence_number(skb->nh.ipv6h->daddr.s6_addr32,
skb->nh.ipv6h->saddr.s6_addr32,
return secure_dccpv6_sequence_number(ipv6_hdr(skb)->daddr.s6_addr32,
ipv6_hdr(skb)->saddr.s6_addr32,
dccp_hdr(skb)->dccph_dport,
dccp_hdr(skb)->dccph_sport );
@ -313,6 +313,7 @@ static void dccp_v6_reqsk_destructor(struct request_sock *req)
static void dccp_v6_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
{
struct dccp_hdr *rxdh = dccp_hdr(rxskb), *dh;
struct ipv6hdr *rxip6h;
const u32 dccp_hdr_reset_len = sizeof(struct dccp_hdr) +
sizeof(struct dccp_hdr_ext) +
sizeof(struct dccp_hdr_reset);
@ -352,12 +353,13 @@ static void dccp_v6_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
dccp_hdr_set_ack(dccp_hdr_ack_bits(skb), DCCP_SKB_CB(rxskb)->dccpd_seq);
dccp_csum_outgoing(skb);
dh->dccph_checksum = dccp_v6_csum_finish(skb, &rxskb->nh.ipv6h->saddr,
&rxskb->nh.ipv6h->daddr);
rxip6h = ipv6_hdr(rxskb);
dh->dccph_checksum = dccp_v6_csum_finish(skb, &rxip6h->saddr,
&rxip6h->daddr);
memset(&fl, 0, sizeof(fl));
ipv6_addr_copy(&fl.fl6_dst, &rxskb->nh.ipv6h->saddr);
ipv6_addr_copy(&fl.fl6_src, &rxskb->nh.ipv6h->daddr);
ipv6_addr_copy(&fl.fl6_dst, &rxip6h->saddr);
ipv6_addr_copy(&fl.fl6_src, &rxip6h->daddr);
fl.proto = IPPROTO_DCCP;
fl.oif = inet6_iif(rxskb);
@ -390,7 +392,7 @@ static struct request_sock_ops dccp6_request_sock_ops = {
static struct sock *dccp_v6_hnd_req(struct sock *sk,struct sk_buff *skb)
{
const struct dccp_hdr *dh = dccp_hdr(skb);
const struct ipv6hdr *iph = skb->nh.ipv6h;
const struct ipv6hdr *iph = ipv6_hdr(skb);
struct sock *nsk;
struct request_sock **prev;
/* Find possible connection requests. */
@ -460,8 +462,8 @@ static int dccp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
goto drop_and_free;
ireq6 = inet6_rsk(req);
ipv6_addr_copy(&ireq6->rmt_addr, &skb->nh.ipv6h->saddr);
ipv6_addr_copy(&ireq6->loc_addr, &skb->nh.ipv6h->daddr);
ipv6_addr_copy(&ireq6->rmt_addr, &ipv6_hdr(skb)->saddr);
ipv6_addr_copy(&ireq6->loc_addr, &ipv6_hdr(skb)->daddr);
ireq6->pktopts = NULL;
if (ipv6_opt_accepted(sk, skb) ||
@ -546,7 +548,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
newnp->pktoptions = NULL;
newnp->opt = NULL;
newnp->mcast_oif = inet6_iif(skb);
newnp->mcast_hops = skb->nh.ipv6h->hop_limit;
newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
/*
* No need to charge this sock to the relevant IPv6 refcnt debug socks count
@ -653,7 +655,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
}
newnp->opt = NULL;
newnp->mcast_oif = inet6_iif(skb);
newnp->mcast_hops = skb->nh.ipv6h->hop_limit;
newnp->mcast_hops = ipv6_hdr(skb)->hop_limit;
/*
* Clone native IPv6 options from listening socket (if any)
@ -826,8 +828,8 @@ static int dccp_v6_rcv(struct sk_buff **pskb)
goto discard_it;
/* Step 1: If header checksum is incorrect, drop packet and return. */
if (dccp_v6_csum_finish(skb, &skb->nh.ipv6h->saddr,
&skb->nh.ipv6h->daddr)) {
if (dccp_v6_csum_finish(skb, &ipv6_hdr(skb)->saddr,
&ipv6_hdr(skb)->daddr)) {
DCCP_WARN("dropped packet with invalid checksum\n");
goto discard_it;
}
@ -844,9 +846,9 @@ static int dccp_v6_rcv(struct sk_buff **pskb)
/* Step 2:
* Look up flow ID in table and get corresponding socket */
sk = __inet6_lookup(&dccp_hashinfo, &skb->nh.ipv6h->saddr,
sk = __inet6_lookup(&dccp_hashinfo, &ipv6_hdr(skb)->saddr,
dh->dccph_sport,
&skb->nh.ipv6h->daddr, ntohs(dh->dccph_dport),
&ipv6_hdr(skb)->daddr, ntohs(dh->dccph_dport),
inet6_iif(skb));
/*
* Step 2:

4
net/ipv4/ip_gre.c
View file

@ -535,7 +535,7 @@ static inline void ipgre_ecn_decapsulate(struct iphdr *iph, struct sk_buff *skb)
if (skb->protocol == htons(ETH_P_IP)) {
IP_ECN_set_ce(ip_hdr(skb));
} else if (skb->protocol == htons(ETH_P_IPV6)) {
IP6_ECN_set_ce(skb->nh.ipv6h);
IP6_ECN_set_ce(ipv6_hdr(skb));
}
}
}
@ -721,7 +721,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
addr_type = ipv6_addr_type(addr6);
if (addr_type == IPV6_ADDR_ANY) {
addr6 = &skb->nh.ipv6h->daddr;
addr6 = &ipv6_hdr(skb)->daddr;
addr_type = ipv6_addr_type(addr6);
}

2
net/ipv4/xfrm4_mode_tunnel.c
View file

@ -26,7 +26,7 @@ static inline void ipip_ecn_decapsulate(struct sk_buff *skb)
static inline void ipip6_ecn_decapsulate(struct iphdr *iph, struct sk_buff *skb)
{
if (INET_ECN_is_ce(iph->tos))
IP6_ECN_set_ce(skb->nh.ipv6h);
IP6_ECN_set_ce(ipv6_hdr(skb));
}
/* Add encapsulation header.

14
net/ipv6/ah6.c
View file

@ -325,6 +325,7 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
*/
struct ipv6_auth_hdr *ah;
struct ipv6hdr *ip6h;
struct ah_data *ahp;
unsigned char *tmp_hdr = NULL;
u16 hdr_len;
@ -357,13 +358,14 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
tmp_hdr = kmemdup(skb_network_header(skb), hdr_len, GFP_ATOMIC);
if (!tmp_hdr)
goto out;
if (ipv6_clear_mutable_options(skb->nh.ipv6h, hdr_len, XFRM_POLICY_IN))
ip6h = ipv6_hdr(skb);
if (ipv6_clear_mutable_options(ip6h, hdr_len, XFRM_POLICY_IN))
goto free_out;
skb->nh.ipv6h->priority = 0;
skb->nh.ipv6h->flow_lbl[0] = 0;
skb->nh.ipv6h->flow_lbl[1] = 0;
skb->nh.ipv6h->flow_lbl[2] = 0;
skb->nh.ipv6h->hop_limit = 0;
ip6h->priority = 0;
ip6h->flow_lbl[0] = 0;
ip6h->flow_lbl[1] = 0;
ip6h->flow_lbl[2] = 0;
ip6h->hop_limit = 0;
{
u8 auth_data[MAX_AH_AUTH_LEN];

16
net/ipv6/datagram.c
View file

@ -254,7 +254,7 @@ void ipv6_local_error(struct sock *sk, int err, struct flowi *fl, u32 info)
skb_put(skb, sizeof(struct ipv6hdr));
skb_reset_network_header(skb);
iph = skb->nh.ipv6h;
iph = ipv6_hdr(skb);
ipv6_addr_copy(&iph->daddr, &fl->fl6_dst);
serr = SKB_EXT_ERR(skb);
@ -340,7 +340,7 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len)
sin->sin6_flowinfo = 0;
sin->sin6_scope_id = 0;
if (serr->ee.ee_origin == SO_EE_ORIGIN_ICMP6) {
ipv6_addr_copy(&sin->sin6_addr, &skb->nh.ipv6h->saddr);
ipv6_addr_copy(&sin->sin6_addr, &ipv6_hdr(skb)->saddr);
if (np->rxopt.all)
datagram_recv_ctl(sk, msg, skb);
if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
@ -391,17 +391,17 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
struct in6_pktinfo src_info;
src_info.ipi6_ifindex = opt->iif;
ipv6_addr_copy(&src_info.ipi6_addr, &skb->nh.ipv6h->daddr);
ipv6_addr_copy(&src_info.ipi6_addr, &ipv6_hdr(skb)->daddr);
put_cmsg(msg, SOL_IPV6, IPV6_PKTINFO, sizeof(src_info), &src_info);
}
if (np->rxopt.bits.rxhlim) {
int hlim = skb->nh.ipv6h->hop_limit;
int hlim = ipv6_hdr(skb)->hop_limit;
put_cmsg(msg, SOL_IPV6, IPV6_HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.rxtclass) {
int tclass = (ntohl(*(__be32 *)skb->nh.ipv6h) >> 20) & 0xff;
int tclass = (ntohl(*(__be32 *)ipv6_hdr(skb)) >> 20) & 0xff;
put_cmsg(msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass);
}
@ -428,7 +428,7 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
* IPV6_RECVDSTOPTS is more generic. --yoshfuji
*/
unsigned int off = sizeof(struct ipv6hdr);
u8 nexthdr = skb->nh.ipv6h->nexthdr;
u8 nexthdr = ipv6_hdr(skb)->nexthdr;
while (off <= opt->lastopt) {
unsigned len;
@ -466,11 +466,11 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
struct in6_pktinfo src_info;
src_info.ipi6_ifindex = opt->iif;
ipv6_addr_copy(&src_info.ipi6_addr, &skb->nh.ipv6h->daddr);
ipv6_addr_copy(&src_info.ipi6_addr, &ipv6_hdr(skb)->daddr);
put_cmsg(msg, SOL_IPV6, IPV6_2292PKTINFO, sizeof(src_info), &src_info);
}
if (np->rxopt.bits.rxohlim) {
int hlim = skb->nh.ipv6h->hop_limit;
int hlim = ipv6_hdr(skb)->hop_limit;
put_cmsg(msg, SOL_IPV6, IPV6_2292HOPLIMIT, sizeof(hlim), &hlim);
}
if (np->rxopt.bits.ohopopts && opt->hop) {

2
net/ipv6/esp6.c
View file

@ -191,7 +191,7 @@ static int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
skb->ip_summed = CHECKSUM_NONE;
esph = (struct ipv6_esp_hdr*)skb->data;
iph = skb->nh.ipv6h;
iph = ipv6_hdr(skb);
/* Get ivec. This can be wrong, check against another impls. */
if (esp->conf.ivlen)

20
net/ipv6/exthdrs.c
View file

@ -125,7 +125,7 @@ static int ip6_tlvopt_unknown(struct sk_buff **skbp, int optoff)
/* Actually, it is redundant check. icmp_send
will recheck in any case.
*/
if (ipv6_addr_is_multicast(&skb->nh.ipv6h->daddr))
if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr))
break;
case 2: /* send ICMP PARM PROB regardless and drop packet */
icmpv6_param_prob(skb, ICMPV6_UNK_OPTION, optoff);
@ -202,7 +202,7 @@ static int ipv6_dest_hao(struct sk_buff **skbp, int optoff)
struct sk_buff *skb = *skbp;
struct ipv6_destopt_hao *hao;
struct inet6_skb_parm *opt = IP6CB(skb);
struct ipv6hdr *ipv6h = skb->nh.ipv6h;
struct ipv6hdr *ipv6h = ipv6_hdr(skb);
struct in6_addr tmp_addr;
int ret;
@ -248,7 +248,7 @@ static int ipv6_dest_hao(struct sk_buff **skbp, int optoff)
*skbp = skb = skb2;
hao = (struct ipv6_destopt_hao *)(skb_network_header(skb2) +
optoff);
ipv6h = skb2->nh.ipv6h;
ipv6h = ipv6_hdr(skb2);
}
if (skb->ip_summed == CHECKSUM_COMPLETE)
@ -414,7 +414,7 @@ static int ipv6_rthdr_rcv(struct sk_buff **skbp)
return -1;
}
if (ipv6_addr_is_multicast(&skb->nh.ipv6h->daddr) ||
if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ||
skb->pkt_type != PACKET_HOST) {
IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
IPSTATS_MIB_INADDRERRORS);
@ -522,7 +522,7 @@ looped_back:
#ifdef CONFIG_IPV6_MIP6
case IPV6_SRCRT_TYPE_2:
if (xfrm6_input_addr(skb, (xfrm_address_t *)addr,
(xfrm_address_t *)&skb->nh.ipv6h->saddr,
(xfrm_address_t *)&ipv6_hdr(skb)->saddr,
IPPROTO_ROUTING) < 0) {
IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
IPSTATS_MIB_INADDRERRORS);
@ -549,8 +549,8 @@ looped_back:
}
ipv6_addr_copy(&daddr, addr);
ipv6_addr_copy(addr, &skb->nh.ipv6h->daddr);
ipv6_addr_copy(&skb->nh.ipv6h->daddr, &daddr);
ipv6_addr_copy(addr, &ipv6_hdr(skb)->daddr);
ipv6_addr_copy(&ipv6_hdr(skb)->daddr, &daddr);
dst_release(xchg(&skb->dst, NULL));
ip6_route_input(skb);
@ -561,7 +561,7 @@ looped_back:
}
if (skb->dst->dev->flags&IFF_LOOPBACK) {
if (skb->nh.ipv6h->hop_limit <= 1) {
if (ipv6_hdr(skb)->hop_limit <= 1) {
IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
IPSTATS_MIB_INHDRERRORS);
icmpv6_send(skb, ICMPV6_TIME_EXCEED, ICMPV6_EXC_HOPLIMIT,
@ -569,7 +569,7 @@ looped_back:
kfree_skb(skb);
return -1;
}
skb->nh.ipv6h->hop_limit--;
ipv6_hdr(skb)->hop_limit--;
goto looped_back;
}
@ -698,7 +698,7 @@ static int ipv6_hop_jumbo(struct sk_buff **skbp, int optoff)
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, optoff+2);
return 0;
}
if (skb->nh.ipv6h->payload_len) {
if (ipv6_hdr(skb)->payload_len) {
IP6_INC_STATS_BH(ip6_dst_idev(skb->dst), IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, optoff);
return 0;

20
net/ipv6/icmp.c
View file

@ -129,9 +129,9 @@ void icmpv6_param_prob(struct sk_buff *skb, int code, int pos)
static int is_ineligible(struct sk_buff *skb)
{
int ptr = (u8*)(skb->nh.ipv6h+1) - skb->data;
int ptr = (u8 *)(ipv6_hdr(skb) + 1) - skb->data;
int len = skb->len - ptr;
__u8 nexthdr = skb->nh.ipv6h->nexthdr;
__u8 nexthdr = ipv6_hdr(skb)->nexthdr;
if (len < 0)
return 1;
@ -275,7 +275,7 @@ static int icmpv6_getfrag(void *from, char *to, int offset, int len, int odd, st
#ifdef CONFIG_IPV6_MIP6
static void mip6_addr_swap(struct sk_buff *skb)
{
struct ipv6hdr *iph = skb->nh.ipv6h;
struct ipv6hdr *iph = ipv6_hdr(skb);
struct inet6_skb_parm *opt = IP6CB(skb);
struct ipv6_destopt_hao *hao;
struct in6_addr tmp;
@ -303,7 +303,7 @@ void icmpv6_send(struct sk_buff *skb, int type, int code, __u32 info,
struct net_device *dev)
{
struct inet6_dev *idev = NULL;
struct ipv6hdr *hdr = skb->nh.ipv6h;
struct ipv6hdr *hdr = ipv6_hdr(skb);
struct sock *sk;
struct ipv6_pinfo *np;
struct in6_addr *saddr = NULL;
@ -485,7 +485,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
int hlimit;
int tclass;
saddr = &skb->nh.ipv6h->daddr;
saddr = &ipv6_hdr(skb)->daddr;
if (!ipv6_unicast_destination(skb))
saddr = NULL;
@ -495,7 +495,7 @@ static void icmpv6_echo_reply(struct sk_buff *skb)
memset(&fl, 0, sizeof(fl));
fl.proto = IPPROTO_ICMPV6;
ipv6_addr_copy(&fl.fl6_dst, &skb->nh.ipv6h->saddr);
ipv6_addr_copy(&fl.fl6_dst, &ipv6_hdr(skb)->saddr);
if (saddr)
ipv6_addr_copy(&fl.fl6_src, saddr);
fl.oif = skb->dev->ifindex;
@ -583,8 +583,8 @@ static void icmpv6_notify(struct sk_buff *skb, int type, int code, __be32 info)
if (!pskb_may_pull(skb, inner_offset+8))
return;
saddr = &skb->nh.ipv6h->saddr;
daddr = &skb->nh.ipv6h->daddr;
saddr = &ipv6_hdr(skb)->saddr;
daddr = &ipv6_hdr(skb)->daddr;
/* BUGGG_FUTURE: we should try to parse exthdrs in this packet.
Without this we will not able f.e. to make source routed
@ -628,8 +628,8 @@ static int icmpv6_rcv(struct sk_buff **pskb)
ICMP6_INC_STATS_BH(idev, ICMP6_MIB_INMSGS);
saddr = &skb->nh.ipv6h->saddr;
daddr = &skb->nh.ipv6h->daddr;
saddr = &ipv6_hdr(skb)->saddr;
daddr = &ipv6_hdr(skb)->daddr;
/* Perform checksum. */
switch (skb->ip_summed) {

8
net/ipv6/ip6_input.c
View file

@ -96,7 +96,7 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
if (unlikely(!pskb_may_pull(skb, sizeof(*hdr))))
goto err;
hdr = skb->nh.ipv6h;
hdr = ipv6_hdr(skb);
if (hdr->version != 6)
goto err;
@ -116,7 +116,7 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
IP6_INC_STATS_BH(idev, IPSTATS_MIB_INHDRERRORS);
goto drop;
}
hdr = skb->nh.ipv6h;
hdr = ipv6_hdr(skb);
}
if (hdr->nexthdr == NEXTHDR_HOP) {
@ -183,7 +183,7 @@ resubmit:
skb_postpull_rcsum(skb, skb_network_header(skb),
skb->h.raw - skb->nh.raw);
hdr = skb->nh.ipv6h;
hdr = ipv6_hdr(skb);
if (ipv6_addr_is_multicast(&hdr->daddr) &&
!ipv6_chk_mcast_addr(skb->dev, &hdr->daddr,
&hdr->saddr) &&
@ -234,7 +234,7 @@ int ip6_mc_input(struct sk_buff *skb)
IP6_INC_STATS_BH(ip6_dst_idev(skb->dst), IPSTATS_MIB_INMCASTPKTS);
hdr = skb->nh.ipv6h;
hdr = ipv6_hdr(skb);
deliver = likely(!(skb->dev->flags & (IFF_PROMISC|IFF_ALLMULTI))) ||
ipv6_chk_mcast_addr(skb->dev, &hdr->daddr, NULL);

37
net/ipv6/ip6_output.c
View file

@ -107,13 +107,13 @@ static int ip6_output2(struct sk_buff *skb)
skb->protocol = htons(ETH_P_IPV6);
skb->dev = dev;
if (ipv6_addr_is_multicast(&skb->nh.ipv6h->daddr)) {
if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr)) {
struct ipv6_pinfo* np = skb->sk ? inet6_sk(skb->sk) : NULL;
struct inet6_dev *idev = ip6_dst_idev(skb->dst);
if (!(dev->flags & IFF_LOOPBACK) && (!np || np->mc_loop) &&
ipv6_chk_mcast_addr(dev, &skb->nh.ipv6h->daddr,
&skb->nh.ipv6h->saddr)) {
ipv6_chk_mcast_addr(dev, &ipv6_hdr(skb)->daddr,
&ipv6_hdr(skb)->saddr)) {
struct sk_buff *newskb = skb_clone(skb, GFP_ATOMIC);
/* Do not check for IFF_ALLMULTI; multicast routing
@ -124,7 +124,7 @@ static int ip6_output2(struct sk_buff *skb)
newskb->dev,
ip6_dev_loopback_xmit);
if (skb->nh.ipv6h->hop_limit == 0) {
if (ipv6_hdr(skb)->hop_limit == 0) {
IP6_INC_STATS(idev, IPSTATS_MIB_OUTDISCARDS);
kfree_skb(skb);
return 0;
@ -193,7 +193,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
skb_push(skb, sizeof(struct ipv6hdr));
skb_reset_network_header(skb);
hdr = skb->nh.ipv6h;
hdr = ipv6_hdr(skb);
/*
* Fill in the IPv6 header
@ -263,8 +263,8 @@ int ip6_nd_hdr(struct sock *sk, struct sk_buff *skb, struct net_device *dev,
totlen = len + sizeof(struct ipv6hdr);
hdr = (struct ipv6hdr *) skb_put(skb, sizeof(struct ipv6hdr));
skb->nh.ipv6h = hdr;
skb->nh.raw = skb_put(skb, sizeof(struct ipv6hdr));
hdr = ipv6_hdr(skb);
*(__be32*)hdr = htonl(0x60000000);
@ -309,7 +309,7 @@ static int ip6_call_ra_chain(struct sk_buff *skb, int sel)
static int ip6_forward_proxy_check(struct sk_buff *skb)
{
struct ipv6hdr *hdr = skb->nh.ipv6h;
struct ipv6hdr *hdr = ipv6_hdr(skb);
u8 nexthdr = hdr->nexthdr;
int offset;
@ -366,7 +366,7 @@ static inline int ip6_forward_finish(struct sk_buff *skb)
int ip6_forward(struct sk_buff *skb)
{
struct dst_entry *dst = skb->dst;
struct ipv6hdr *hdr = skb->nh.ipv6h;
struct ipv6hdr *hdr = ipv6_hdr(skb);
struct inet6_skb_parm *opt = IP6CB(skb);
if (ipv6_devconf.forwarding == 0)
@ -475,7 +475,7 @@ int ip6_forward(struct sk_buff *skb)
goto drop;
}
hdr = skb->nh.ipv6h;
hdr = ipv6_hdr(skb);
/* Mangling hops number delayed to point after skb COW */
@ -527,10 +527,11 @@ static void ip6_copy_metadata(struct sk_buff *to, struct sk_buff *from)
int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
{
u16 offset = sizeof(struct ipv6hdr);
struct ipv6_opt_hdr *exthdr = (struct ipv6_opt_hdr*)(skb->nh.ipv6h + 1);
struct ipv6_opt_hdr *exthdr =
(struct ipv6_opt_hdr *)(ipv6_hdr(skb) + 1);
unsigned int packet_len = skb->tail - skb_network_header(skb);
int found_rhdr = 0;
*nexthdr = &skb->nh.ipv6h->nexthdr;
*nexthdr = &ipv6_hdr(skb)->nexthdr;
while (offset + 1 <= packet_len) {
@ -643,7 +644,8 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
first_len = skb_pagelen(skb);
skb->data_len = first_len - skb_headlen(skb);
skb->len = first_len;
skb->nh.ipv6h->payload_len = htons(first_len - sizeof(struct ipv6hdr));
ipv6_hdr(skb)->payload_len = htons(first_len -
sizeof(struct ipv6hdr));
dst_hold(&rt->u.dst);
@ -665,7 +667,9 @@ static int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
if (frag->next != NULL)
fh->frag_off |= htons(IP6_MF);
fh->identification = frag_id;
frag->nh.ipv6h->payload_len = htons(frag->len - sizeof(struct ipv6hdr));
ipv6_hdr(frag)->payload_len =
htons(frag->len -
sizeof(struct ipv6hdr));
ip6_copy_metadata(frag, skb);
}
@ -779,7 +783,8 @@ slow_path:
fh->frag_off = htons(offset);
if (left > 0)
fh->frag_off |= htons(IP6_MF);
frag->nh.ipv6h->payload_len = htons(frag->len - sizeof(struct ipv6hdr));
ipv6_hdr(frag)->payload_len = htons(frag->len -
sizeof(struct ipv6hdr));
ptr += len;
offset += len;
@ -1355,7 +1360,7 @@ int ip6_push_pending_frames(struct sock *sk)
skb_push(skb, sizeof(struct ipv6hdr));
skb_reset_network_header(skb);
hdr = skb->nh.ipv6h;
hdr = ipv6_hdr(skb);
*(__be32*)hdr = fl->fl6_flowlabel |
htonl(0x60000000 | ((int)np->cork.tclass << 20));

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