if (memcmp(eth->h_dest, dev->broadcast, ETH1394_ALEN) == 0 ||
proto == htons(ETH_P_ARP) ||
(proto == htons(ETH_P_IP) &&
- IN_MULTICAST(ntohl(skb->nh.iph->daddr)))) {
+ IN_MULTICAST(ntohl(ip_hdr(skb)->daddr)))) {
tx_type = ETH1394_GASP;
dest_node = LOCAL_BUS | ALL_NODES;
max_payload = priv->bc_maxpayload - ETHER1394_GASP_OVERHEAD;
if (mss)
flags |= LargeSend | ((mss & MSSMask) << MSSShift);
else if (skb->ip_summed == CHECKSUM_PARTIAL) {
- const struct iphdr *ip = skb->nh.iph;
+ const struct iphdr *ip = ip_hdr(skb);
if (ip->protocol == IPPROTO_TCP)
flags |= IPCS | TCPCS;
else if (ip->protocol == IPPROTO_UDP)
u32 first_len, first_eor;
dma_addr_t first_mapping;
int frag, first_entry = entry;
- const struct iphdr *ip = skb->nh.iph;
+ const struct iphdr *ip = ip_hdr(skb);
/* We must give this initial chunk to the device last.
* Otherwise we could race with the device.
}
if (skb->protocol == ntohs(ETH_P_IP)) {
- skb->nh.iph->tot_len = 0;
- skb->nh.iph->check = 0;
- skb->h.th->check =
- ~csum_tcpudp_magic(skb->nh.iph->saddr,
- skb->nh.iph->daddr, 0,
- IPPROTO_TCP, 0);
+ struct iphdr *iph = ip_hdr(skb);
+
+ iph->tot_len = 0;
+ iph->check = 0;
+ skb->h.th->check = ~csum_tcpudp_magic(iph->saddr,
+ iph->daddr, 0,
+ IPPROTO_TCP, 0);
ipofst = skb_network_offset(skb);
if (ipofst != ENET_HEADER_SIZE) /* 802.3 frame */
tso->tsopl |= 1 << TSO_PARAM_ETHTYPE_SHIFT;
- tso->tsopl |= (skb->nh.iph->ihl &
+ tso->tsopl |= (iph->ihl &
CSUM_PARAM_IPHL_MASK) << CSUM_PARAM_IPHL_SHIFT;
tso->tsopl |= ((skb->h.th->doff << 2) &
TSO_PARAM_TCPHDRLEN_MASK) << TSO_PARAM_TCPHDRLEN_SHIFT;
if ((mss = skb_shinfo(skb)->gso_size) &&
(skb->len > (bp->dev->mtu + ETH_HLEN))) {
u32 tcp_opt_len, ip_tcp_len;
+ struct iphdr *iph;
if (skb_header_cloned(skb) &&
pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) {
}
ip_tcp_len = ip_hdrlen(skb) + sizeof(struct tcphdr);
- skb->nh.iph->check = 0;
- skb->nh.iph->tot_len = htons(mss + ip_tcp_len + tcp_opt_len);
- skb->h.th->check =
- ~csum_tcpudp_magic(skb->nh.iph->saddr,
- skb->nh.iph->daddr,
- 0, IPPROTO_TCP, 0);
+ iph = ip_hdr(skb);
+ iph->check = 0;
+ iph->tot_len = htons(mss + ip_tcp_len + tcp_opt_len);
+ skb->h.th->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
+ 0, IPPROTO_TCP, 0);
- if (tcp_opt_len || (skb->nh.iph->ihl > 5)) {
- vlan_tag_flags |= ((skb->nh.iph->ihl - 5) +
- (tcp_opt_len >> 2)) << 8;
+ if (tcp_opt_len || (iph->ihl > 5)) {
+ vlan_tag_flags |= ((iph->ihl - 5) +
+ (tcp_opt_len >> 2)) << 8;
}
}
else
/* Forward declaration */
static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[]);
-static inline u8 _simple_hash(u8 *hash_start, int hash_size)
+static inline u8 _simple_hash(const u8 *hash_start, int hash_size)
{
int i;
u8 hash = 0;
int hash_size = 0;
int do_tx_balance = 1;
u32 hash_index = 0;
- u8 *hash_start = NULL;
+ const u8 *hash_start = NULL;
int res = 1;
skb_reset_mac_header(skb);
}
switch (ntohs(skb->protocol)) {
- case ETH_P_IP:
+ case ETH_P_IP: {
+ const struct iphdr *iph = ip_hdr(skb);
+
if ((memcmp(eth_data->h_dest, mac_bcast, ETH_ALEN) == 0) ||
- (skb->nh.iph->daddr == ip_bcast) ||
- (skb->nh.iph->protocol == IPPROTO_IGMP)) {
+ (iph->daddr == ip_bcast) ||
+ (iph->protocol == IPPROTO_IGMP)) {
do_tx_balance = 0;
break;
}
- hash_start = (char*)&(skb->nh.iph->daddr);
- hash_size = sizeof(skb->nh.iph->daddr);
+ hash_start = (char *)&(iph->daddr);
+ hash_size = sizeof(iph->daddr);
+ }
break;
case ETH_P_IPV6:
if (memcmp(eth_data->h_dest, mac_bcast, ETH_ALEN) == 0) {
struct net_device *bond_dev, int count)
{
struct ethhdr *data = (struct ethhdr *)skb->data;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
u16 *layer4hdr = (u16 *)((u32 *)iph + iph->ihl);
int layer4_xor = 0;
hdr = (struct cpl_tx_pkt_lso *)skb_push(skb, sizeof(*hdr));
hdr->opcode = CPL_TX_PKT_LSO;
hdr->ip_csum_dis = hdr->l4_csum_dis = 0;
- hdr->ip_hdr_words = skb->nh.iph->ihl;
+ hdr->ip_hdr_words = ip_hdr(skb)->ihl;
hdr->tcp_hdr_words = skb->h.th->doff;
hdr->eth_type_mss = htons(MK_ETH_TYPE_MSS(eth_type,
skb_shinfo(skb)->gso_size));
if (!(adapter->flags & UDP_CSUM_CAPABLE) &&
skb->ip_summed == CHECKSUM_PARTIAL &&
- skb->nh.iph->protocol == IPPROTO_UDP) {
+ ip_hdr(skb)->protocol == IPPROTO_UDP) {
if (unlikely(skb_checksum_help(skb))) {
pr_debug("%s: unable to do udp checksum\n", dev->name);
dev_kfree_skb_any(skb);
eth_type = skb_network_offset(skb) == ETH_HLEN ?
CPL_ETH_II : CPL_ETH_II_VLAN;
tso_info |= V_LSO_ETH_TYPE(eth_type) |
- V_LSO_IPHDR_WORDS(skb->nh.iph->ihl) |
+ V_LSO_IPHDR_WORDS(ip_hdr(skb)->ihl) |
V_LSO_TCPHDR_WORDS(skb->h.th->doff);
hdr->lso_info = htonl(tso_info);
flits = 3;
hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
mss = skb_shinfo(skb)->gso_size;
if (skb->protocol == htons(ETH_P_IP)) {
- skb->nh.iph->tot_len = 0;
- skb->nh.iph->check = 0;
- skb->h.th->check =
- ~csum_tcpudp_magic(skb->nh.iph->saddr,
- skb->nh.iph->daddr,
- 0,
- IPPROTO_TCP,
- 0);
+ struct iphdr *iph = ip_hdr(skb);
+ iph->tot_len = 0;
+ iph->check = 0;
+ skb->h.th->check = ~csum_tcpudp_magic(iph->saddr,
+ iph->daddr, 0,
+ IPPROTO_TCP, 0);
cmd_length = E1000_TXD_CMD_IP;
ipcse = skb->h.raw - skb->data - 1;
} else if (skb->protocol == htons(ETH_P_IPV6)) {
ipcse = 0;
}
ipcss = skb_network_offset(skb);
- ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
+ ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
tucss = skb->h.raw - skb->data;
tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
tucse = 0;
static inline void write_ip_start_end(struct ehea_swqe *swqe,
const struct sk_buff *skb)
{
- swqe->ip_start = (u8)(((u64)skb->nh.iph) - ((u64)skb->data));
+ swqe->ip_start = skb_network_offset(skb);
swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
}
struct ehea_swqe *swqe, u32 lkey)
{
if (skb->protocol == htons(ETH_P_IP)) {
+ const struct iphdr *iph = ip_hdr(skb);
/* IPv4 */
swqe->tx_control |= EHEA_SWQE_CRC
| EHEA_SWQE_IP_CHECKSUM
write_ip_start_end(swqe, skb);
- if (skb->nh.iph->protocol == IPPROTO_UDP) {
- if ((skb->nh.iph->frag_off & IP_MF) ||
- (skb->nh.iph->frag_off & IP_OFFSET))
+ if (iph->protocol == IPPROTO_UDP) {
+ if ((iph->frag_off & IP_MF) ||
+ (iph->frag_off & IP_OFFSET))
/* IP fragment, so don't change cs */
swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
else
write_udp_offset_end(swqe, skb);
- } else if (skb->nh.iph->protocol == IPPROTO_TCP) {
+ } else if (iph->protocol == IPPROTO_TCP) {
write_tcp_offset_end(swqe, skb);
}
int i;
if (skb->protocol == htons(ETH_P_IP)) {
+ const struct iphdr *iph = ip_hdr(skb);
/* IPv4 */
write_ip_start_end(swqe, skb);
- if (skb->nh.iph->protocol == IPPROTO_TCP) {
+ if (iph->protocol == IPPROTO_TCP) {
swqe->tx_control |= EHEA_SWQE_CRC
| EHEA_SWQE_IP_CHECKSUM
| EHEA_SWQE_TCP_CHECKSUM
write_tcp_offset_end(swqe, skb);
- } else if (skb->nh.iph->protocol == IPPROTO_UDP) {
- if ((skb->nh.iph->frag_off & IP_MF) ||
- (skb->nh.iph->frag_off & IP_OFFSET))
+ } else if (iph->protocol == IPPROTO_UDP) {
+ if ((iph->frag_off & IP_MF) ||
+ (iph->frag_off & IP_OFFSET))
/* IP fragment, so don't change cs */
swqe->tx_control |= EHEA_SWQE_CRC
| EHEA_SWQE_IMM_DATA_PRESENT;
/* Tell the controller what the protocol is */
/* And provide the already calculated phcs */
- if (skb->nh.iph->protocol == IPPROTO_UDP) {
+ if (ip_hdr(skb)->protocol == IPPROTO_UDP) {
flags |= TXFCB_UDP;
fcb->phcs = skb->h.uh->check;
} else
* manually.
*/
if (skb->ip_summed == CHECKSUM_PARTIAL) {
- int proto = ntohs(skb->nh.iph->protocol);
+ const struct iphdr *ih = ip_hdr(skb);
+ const int proto = ntohs(ih->protocol);
unsigned int csoff;
- struct iphdr *ih = skb->nh.iph;
uint32_t csum, ehsum;
uint16_t *eh;
if (likely(skb_is_gso(skb))) {
struct ixgb_buffer *buffer_info;
+ struct iphdr *iph;
+
if (skb_header_cloned(skb)) {
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
if (err)
hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
mss = skb_shinfo(skb)->gso_size;
- skb->nh.iph->tot_len = 0;
- skb->nh.iph->check = 0;
- skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr,
- skb->nh.iph->daddr,
+ iph = ip_hdr(skb);
+ iph->tot_len = 0;
+ iph->check = 0;
+ skb->h.th->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
0, IPPROTO_TCP, 0);
ipcss = skb_network_offset(skb);
- ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
+ ipcso = (void *)&(iph->check) - (void *)skb->data;
ipcse = skb->h.raw - skb->data - 1;
tucss = skb->h.raw - skb->data;
tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
#ifdef LOOPBACK_TSO
static void emulate_large_send_offload(struct sk_buff *skb)
{
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
struct tcphdr *th = (struct tcphdr *)(skb_network_header(skb) +
(iph->ihl * 4));
unsigned int doffset = (iph->ihl + th->doff) * 4;
skb_reserve(nskb, 32);
skb_set_mac_header(nskb, -ETH_HLEN);
skb_reset_network_header(nskb);
- iph = nskb->nh.iph;
+ iph = ip_hdr(nskb);
memcpy(nskb->data, skb_network_header(skb), doffset);
if (skb_copy_bits(skb,
doffset + offset,
#ifdef LOOPBACK_TSO
if (skb_is_gso(skb)) {
BUG_ON(skb->protocol != htons(ETH_P_IP));
- BUG_ON(skb->nh.iph->protocol != IPPROTO_TCP);
+ BUG_ON(ip_hdr(skb)->protocol != IPPROTO_TCP);
emulate_large_send_offload(skb);
return 0;
cmd_sts |= ETH_GEN_TCP_UDP_CHECKSUM |
ETH_GEN_IP_V_4_CHECKSUM |
- skb->nh.iph->ihl << ETH_TX_IHL_SHIFT;
+ ip_hdr(skb)->ihl << ETH_TX_IHL_SHIFT;
- switch (skb->nh.iph->protocol) {
+ switch (ip_hdr(skb)->protocol) {
case IPPROTO_UDP:
cmd_sts |= ETH_UDP_FRAME;
desc->l4i_chk = skb->h.uh->check;
skb->h.th->doff * 4);
netxen_set_cmd_desc_opcode(desc, TX_TCP_LSO);
} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
- if (skb->nh.iph->protocol == IPPROTO_TCP) {
+ if (ip_hdr(skb)->protocol == IPPROTO_TCP) {
netxen_set_cmd_desc_opcode(desc, TX_TCP_PKT);
- } else if (skb->nh.iph->protocol == IPPROTO_UDP) {
+ } else if (ip_hdr(skb)->protocol == IPPROTO_UDP) {
netxen_set_cmd_desc_opcode(desc, TX_UDP_PKT);
} else {
return;
extsts = 0;
if (skb->ip_summed == CHECKSUM_PARTIAL) {
extsts |= EXTSTS_IPPKT;
- if (IPPROTO_TCP == skb->nh.iph->protocol)
+ if (IPPROTO_TCP == ip_hdr(skb)->protocol)
extsts |= EXTSTS_TCPPKT;
- else if (IPPROTO_UDP == skb->nh.iph->protocol)
+ else if (IPPROTO_UDP == ip_hdr(skb)->protocol)
extsts |= EXTSTS_UDPPKT;
}
if (skb->ip_summed == CHECKSUM_PARTIAL) {
const unsigned char *nh = skb_network_header(skb);
- switch (skb->nh.iph->protocol) {
+ switch (ip_hdr(skb)->protocol) {
case IPPROTO_TCP:
dflags |= XCT_MACTX_CSUM_TCP;
dflags |= XCT_MACTX_IPH((skb->h.raw - skb->nh.raw) >> 2);
return LargeSend | ((mss & MSSMask) << MSSShift);
}
if (skb->ip_summed == CHECKSUM_PARTIAL) {
- const struct iphdr *ip = skb->nh.iph;
+ const struct iphdr *ip = ip_hdr(skb);
if (ip->protocol == IPPROTO_TCP)
return IPCS | TCPCS;
tcpsum |= offset + skb->csum_offset; /* sum write */
ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
- if (skb->nh.iph->protocol == IPPROTO_UDP)
+ if (ip_hdr(skb)->protocol == IPPROTO_UDP)
ctrl |= UDPTCP;
if (tcpsum != sky2->tx_tcpsum) {
spin_unlock_irqrestore(&chain->lock, flags);
if (skb->protocol == htons(ETH_P_IP) && skb->ip_summed == CHECKSUM_PARTIAL)
- switch (skb->nh.iph->protocol) {
+ switch (ip_hdr(skb)->protocol) {
case IPPROTO_TCP:
hwdescr->dmac_cmd_status |= SPIDER_NET_DMAC_TCP;
break;
if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6)
mss |= (skb_headlen(skb) - ETH_HLEN) << 9;
else {
+ struct iphdr *iph = ip_hdr(skb);
+
tcp_opt_len = ((skb->h.th->doff - 5) * 4);
ip_tcp_len = ip_hdrlen(skb) + sizeof(struct tcphdr);
- skb->nh.iph->check = 0;
- skb->nh.iph->tot_len = htons(mss + ip_tcp_len +
- tcp_opt_len);
+ iph->check = 0;
+ iph->tot_len = htons(mss + ip_tcp_len + tcp_opt_len);
mss |= (ip_tcp_len + tcp_opt_len) << 9;
}
mss = 0;
if (skb->len > (tp->dev->mtu + ETH_HLEN) &&
(mss = skb_shinfo(skb)->gso_size) != 0) {
+ struct iphdr *iph;
int tcp_opt_len, ip_tcp_len, hdr_len;
if (skb_header_cloned(skb) &&
base_flags |= (TXD_FLAG_CPU_PRE_DMA |
TXD_FLAG_CPU_POST_DMA);
- skb->nh.iph->check = 0;
- skb->nh.iph->tot_len = htons(mss + hdr_len);
+ iph = ip_hdr(skb);
+ iph->check = 0;
+ iph->tot_len = htons(mss + hdr_len);
if (tp->tg3_flags2 & TG3_FLG2_HW_TSO) {
skb->h.th->check = 0;
base_flags &= ~TXD_FLAG_TCPUDP_CSUM;
}
else {
- skb->h.th->check =
- ~csum_tcpudp_magic(skb->nh.iph->saddr,
- skb->nh.iph->daddr,
- 0, IPPROTO_TCP, 0);
+ skb->h.th->check = ~csum_tcpudp_magic(iph->saddr,
+ iph->daddr, 0,
+ IPPROTO_TCP, 0);
}
if ((tp->tg3_flags2 & TG3_FLG2_HW_TSO) ||
(GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705)) {
- if (tcp_opt_len || skb->nh.iph->ihl > 5) {
+ if (tcp_opt_len || iph->ihl > 5) {
int tsflags;
- tsflags = ((skb->nh.iph->ihl - 5) +
- (tcp_opt_len >> 2));
+ tsflags = (iph->ihl - 5) + (tcp_opt_len >> 2);
mss |= (tsflags << 11);
}
} else {
- if (tcp_opt_len || skb->nh.iph->ihl > 5) {
+ if (tcp_opt_len || iph->ihl > 5) {
int tsflags;
- tsflags = ((skb->nh.iph->ihl - 5) +
- (tcp_opt_len >> 2));
+ tsflags = (iph->ihl - 5) + (tcp_opt_len >> 2);
base_flags |= tsflags << 12;
}
}
*/
if ((vptr->flags & VELOCITY_FLAGS_TX_CSUM)
&& (skb->ip_summed == CHECKSUM_PARTIAL)) {
- struct iphdr *ip = skb->nh.iph;
+ const struct iphdr *ip = ip_hdr(skb);
if (ip->protocol == IPPROTO_TCP)
td_ptr->tdesc1.TCR |= TCR0_TCPCK;
else if (ip->protocol == IPPROTO_UDP)
return card->info.is_multicast_different &
(card->qdio.no_out_queues - 1);
if (card->qdio.do_prio_queueing && (ipv == 4)) {
+ const u8 tos = ip_hdr(skb)->tos;
+
if (card->qdio.do_prio_queueing==QETH_PRIO_Q_ING_TOS){
- if (skb->nh.iph->tos & IP_TOS_NOTIMPORTANT)
+ if (tos & IP_TOS_NOTIMPORTANT)
return 3;
- if (skb->nh.iph->tos & IP_TOS_HIGHRELIABILITY)
+ if (tos & IP_TOS_HIGHRELIABILITY)
return 2;
- if (skb->nh.iph->tos & IP_TOS_HIGHTHROUGHPUT)
+ if (tos & IP_TOS_HIGHTHROUGHPUT)
return 1;
- if (skb->nh.iph->tos & IP_TOS_LOWDELAY)
+ if (tos & IP_TOS_LOWDELAY)
return 0;
}
if (card->qdio.do_prio_queueing==QETH_PRIO_Q_ING_PREC)
- return 3 - (skb->nh.iph->tos >> 6);
+ return 3 - (tos >> 6);
} else if (card->qdio.do_prio_queueing && (ipv == 6)) {
/* TODO: IPv6!!! */
}
*((u32 *) skb->dst->neighbour->primary_key);
} else {
/* fill in destination address used in ip header */
- *((u32 *) (&hdr->hdr.l3.dest_addr[12])) = skb->nh.iph->daddr;
+ *((u32 *)(&hdr->hdr.l3.dest_addr[12])) =
+ ip_hdr(skb)->daddr;
}
} else if (ipv == 6) { /* IPv6 or passthru */
hdr->hdr.l3.flags = qeth_get_qeth_hdr_flags6(cast_type);
QETH_DBF_TEXT(trace, 5, "tsofhdr");
hdr = (struct qeth_hdr_tso *) skb->data;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
tcph = skb->h.th;
/*fix header to TSO values ...*/
hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
static inline void
qeth_tso_set_tcpip_header(struct qeth_card *card, struct sk_buff *skb)
{
- struct iphdr *iph;
- struct ipv6hdr *ip6h;
- struct tcphdr *tcph;
-
- iph = skb->nh.iph;
- ip6h = skb->nh.ipv6h;
- tcph = skb->h.th;
+ struct iphdr *iph = ip_hdr(skb);
+ struct ipv6hdr *ip6h = skb->nh.ipv6h;
+ struct tcphdr *tcph = skb->h.th;
tcph->check = 0;
if (skb->protocol == ETH_P_IPV6) {
/*The options start here. */
};
+#ifdef __KERNEL__
+#include <linux/skbuff.h>
+
+static inline struct iphdr *ip_hdr(const struct sk_buff *skb)
+{
+ return (struct iphdr *)skb_network_header(skb);
+}
+#endif
+
struct ip_auth_hdr {
__u8 nexthdr;
__u8 hdrlen; /* This one is measured in 32 bit units! */
} h;
union {
- struct iphdr *iph;
struct ipv6hdr *ipv6h;
struct arphdr *arph;
unsigned char *raw;
case __constant_htons(ETH_P_IP):
if (skb_network_header(skb) + sizeof(struct iphdr) <=
skb->tail)
- return IP_ECN_set_ce(skb->nh.iph);
+ return IP_ECN_set_ce(ip_hdr(skb));
break;
case __constant_htons(ETH_P_IPV6):
static inline unsigned int ip_hdrlen(const struct sk_buff *skb)
{
- return skb->nh.iph->ihl * 4;
+ return ip_hdr(skb)->ihl * 4;
}
struct ipcm_cookie
return NULL;
}
-static inline int tcf_valid_offset(struct sk_buff *skb, unsigned char *ptr,
- int len)
+static inline int tcf_valid_offset(const struct sk_buff *skb,
+ const unsigned char *ptr, const int len)
{
return unlikely((ptr + len) < skb->tail && ptr > skb->head);
}
new_skb->protocol = eth_type_trans(new_skb, dev);
skb_reset_network_header(new_skb);
- eg->latest_ip_addr = new_skb->nh.iph->saddr;
+ eg->latest_ip_addr = ip_hdr(new_skb)->saddr;
eg->packets_rcvd++;
mpc->eg_ops->put(eg);
#define skb_origaddr(skb) (((struct bridge_skb_cb *) \
(skb->nf_bridge->data))->daddr.ipv4)
-#define store_orig_dstaddr(skb) (skb_origaddr(skb) = (skb)->nh.iph->daddr)
-#define dnat_took_place(skb) (skb_origaddr(skb) != (skb)->nh.iph->daddr)
+#define store_orig_dstaddr(skb) (skb_origaddr(skb) = ip_hdr(skb)->daddr)
+#define dnat_took_place(skb) (skb_origaddr(skb) != ip_hdr(skb)->daddr)
#ifdef CONFIG_SYSCTL
static struct ctl_table_header *brnf_sysctl_header;
static int br_nf_pre_routing_finish(struct sk_buff *skb)
{
struct net_device *dev = skb->dev;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
struct nf_bridge_info *nf_bridge = skb->nf_bridge;
int err;
if (!pskb_may_pull(skb, sizeof(struct iphdr)))
goto inhdr_error;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
if (iph->ihl < 5 || iph->version != 4)
goto inhdr_error;
if (!pskb_may_pull(skb, 4 * iph->ihl))
goto inhdr_error;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
if (ip_fast_csum((__u8 *) iph, iph->ihl) != 0)
goto inhdr_error;
skb_push(skb, sizeof(*iph));
skb_reset_network_header(skb);
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
/* iph->version = 4; iph->ihl = 5; */
put_unaligned(0x45, (unsigned char *)iph);
VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev);
skb->dev = odev;
skb->pkt_type = PACKET_HOST;
- skb->nh.iph = iph;
+ skb->nh.raw = (unsigned char *)iph;
skb->h.uh = udph;
if (pkt_dev->nfrags <= 0)
static inline u64 dccp_v4_init_sequence(const struct sk_buff *skb)
{
- return secure_dccp_sequence_number(skb->nh.iph->daddr,
- skb->nh.iph->saddr,
+ return secure_dccp_sequence_number(ip_hdr(skb)->daddr,
+ ip_hdr(skb)->saddr,
dccp_hdr(skb)->dccph_dport,
dccp_hdr(skb)->dccph_sport);
}
newinet->opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
- newinet->mc_ttl = skb->nh.iph->ttl;
+ newinet->mc_ttl = ip_hdr(skb)->ttl;
newinet->id = jiffies;
dccp_sync_mss(newsk, dst_mtu(dst));
static struct sock *dccp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
{
const struct dccp_hdr *dh = dccp_hdr(skb);
- const struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
struct sock *nsk;
struct request_sock **prev;
/* Find possible connection requests. */
struct rtable *rt;
struct flowi fl = { .oif = ((struct rtable *)skb->dst)->rt_iif,
.nl_u = { .ip4_u =
- { .daddr = skb->nh.iph->saddr,
- .saddr = skb->nh.iph->daddr,
+ { .daddr = ip_hdr(skb)->saddr,
+ .saddr = ip_hdr(skb)->daddr,
.tos = RT_CONN_FLAGS(sk) } },
.proto = sk->sk_protocol,
.uli_u = { .ports =
{
int err;
struct dccp_hdr *rxdh = dccp_hdr(rxskb), *dh;
+ const struct iphdr *rxiph;
const int dccp_hdr_reset_len = sizeof(struct dccp_hdr) +
sizeof(struct dccp_hdr_ext) +
sizeof(struct dccp_hdr_reset);
dccp_hdr_set_ack(dccp_hdr_ack_bits(skb), DCCP_SKB_CB(rxskb)->dccpd_seq);
dccp_csum_outgoing(skb);
- dh->dccph_checksum = dccp_v4_csum_finish(skb, rxskb->nh.iph->saddr,
- rxskb->nh.iph->daddr);
+ rxiph = ip_hdr(rxskb);
+ dh->dccph_checksum = dccp_v4_csum_finish(skb, rxiph->saddr,
+ rxiph->daddr);
bh_lock_sock(dccp_v4_ctl_socket->sk);
err = ip_build_and_send_pkt(skb, dccp_v4_ctl_socket->sk,
- rxskb->nh.iph->daddr,
- rxskb->nh.iph->saddr, NULL);
+ rxiph->daddr, rxiph->saddr, NULL);
bh_unlock_sock(dccp_v4_ctl_socket->sk);
if (net_xmit_eval(err) == 0) {
goto drop_and_free;
ireq = inet_rsk(req);
- ireq->loc_addr = skb->nh.iph->daddr;
- ireq->rmt_addr = skb->nh.iph->saddr;
+ ireq->loc_addr = ip_hdr(skb)->daddr;
+ ireq->rmt_addr = ip_hdr(skb)->saddr;
ireq->opt = NULL;
/*
static int dccp_v4_rcv(struct sk_buff *skb)
{
const struct dccp_hdr *dh;
+ const struct iphdr *iph;
struct sock *sk;
int min_cov;
if (dccp_invalid_packet(skb))
goto discard_it;
+ iph = ip_hdr(skb);
/* Step 1: If header checksum is incorrect, drop packet and return */
- if (dccp_v4_csum_finish(skb, skb->nh.iph->saddr, skb->nh.iph->daddr)) {
+ if (dccp_v4_csum_finish(skb, iph->saddr, iph->daddr)) {
DCCP_WARN("dropped packet with invalid checksum\n");
goto discard_it;
}
"src=%u.%u.%u.%u@%-5d "
"dst=%u.%u.%u.%u@%-5d seq=%llu",
dccp_packet_name(dh->dccph_type),
- NIPQUAD(skb->nh.iph->saddr), ntohs(dh->dccph_sport),
- NIPQUAD(skb->nh.iph->daddr), ntohs(dh->dccph_dport),
+ NIPQUAD(iph->saddr), ntohs(dh->dccph_sport),
+ NIPQUAD(iph->daddr), ntohs(dh->dccph_dport),
(unsigned long long) DCCP_SKB_CB(skb)->dccpd_seq);
if (dccp_packet_without_ack(skb)) {
/* Step 2:
* Look up flow ID in table and get corresponding socket */
sk = __inet_lookup(&dccp_hashinfo,
- skb->nh.iph->saddr, dh->dccph_sport,
- skb->nh.iph->daddr, dh->dccph_dport,
- inet_iif(skb));
-
+ iph->saddr, dh->dccph_sport,
+ iph->daddr, dh->dccph_dport, inet_iif(skb));
/*
* Step 2:
* If no socket ...
static void aun_incoming(struct sk_buff *skb, struct aunhdr *ah, size_t len)
{
- struct iphdr *ip = skb->nh.iph;
+ struct iphdr *ip = ip_hdr(skb);
unsigned char stn = ntohl(ip->saddr) & 0xff;
struct sock *sk;
struct sk_buff *newskb;
data = skb->h.raw + sizeof(struct udphdr);
ah = (struct aunhdr *)data;
len = skb->len - sizeof(struct udphdr);
- ip = skb->nh.iph;
+ ip = ip_hdr(skb);
switch (ah->code)
{
if (eth->h_proto != htons(ETH_P_IP))
return 0;
- ip = skb->nh.iph;
+ ip = ip_hdr(skb);
switch (ip->tos & 0xfc) {
case 0x20:
return 2;
if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
goto out;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
ihl = iph->ihl * 4;
if (ihl < sizeof(*iph))
goto out;
goto out;
skb->h.raw = __skb_pull(skb, ihl);
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
proto = iph->protocol & (MAX_INET_PROTOS - 1);
err = -EPROTONOSUPPORT;
if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
goto out;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
ihl = iph->ihl * 4;
if (ihl < sizeof(*iph))
goto out;
goto out;
skb->h.raw = __skb_pull(skb, ihl);
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
id = ntohs(iph->id);
proto = iph->protocol & (MAX_INET_PROTOS - 1);
segs = ERR_PTR(-EPROTONOSUPPORT);
skb = segs;
do {
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
iph->id = htons(id++);
iph->tot_len = htons(skb->len - skb->mac_len);
iph->check = 0;
char buf[60];
} tmp_iph;
- top_iph = skb->nh.iph;
+ top_iph = ip_hdr(skb);
iph = &tmp_iph.iph;
iph->tos = top_iph->tos;
skb->ip_summed = CHECKSUM_NONE;
ah = (struct ip_auth_hdr*)skb->data;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
ihl = skb->data - skb_network_header(skb);
memcpy(work_buf, iph, ihl);
switch (IN_DEV_ARP_ANNOUNCE(in_dev)) {
default:
case 0: /* By default announce any local IP */
- if (skb && inet_addr_type(skb->nh.iph->saddr) == RTN_LOCAL)
- saddr = skb->nh.iph->saddr;
+ if (skb && inet_addr_type(ip_hdr(skb)->saddr) == RTN_LOCAL)
+ saddr = ip_hdr(skb)->saddr;
break;
case 1: /* Restrict announcements of saddr in same subnet */
if (!skb)
break;
- saddr = skb->nh.iph->saddr;
+ saddr = ip_hdr(skb)->saddr;
if (inet_addr_type(saddr) == RTN_LOCAL) {
/* saddr should be known to target */
if (inet_addr_onlink(in_dev, target, saddr))
*/
void cipso_v4_error(struct sk_buff *skb, int error, u32 gateway)
{
- if (skb->nh.iph->protocol == IPPROTO_ICMP || error != -EACCES)
+ if (ip_hdr(skb)->protocol == IPPROTO_ICMP || error != -EACCES)
return;
if (gateway)
pskb_put(skb, trailer, clen - skb->len);
__skb_push(skb, skb->data - skb_network_header(skb));
- top_iph = skb->nh.iph;
+ top_iph = ip_hdr(skb);
esph = (struct ip_esp_hdr *)(skb_network_header(skb) +
top_iph->ihl * 4);
top_iph->tot_len = htons(skb->len + alen);
/* ... check padding bits here. Silly. :-) */
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
ihl = iph->ihl * 4;
if (x->encap) {
icmp_param->data.icmph.checksum = 0;
icmp_out_count(icmp_param->data.icmph.type);
- inet->tos = skb->nh.iph->tos;
+ inet->tos = ip_hdr(skb)->tos;
daddr = ipc.addr = rt->rt_src;
ipc.opt = NULL;
if (icmp_param->replyopts.optlen) {
struct flowi fl = { .nl_u = { .ip4_u =
{ .daddr = daddr,
.saddr = rt->rt_spec_dst,
- .tos = RT_TOS(skb->nh.iph->tos) } },
+ .tos = RT_TOS(ip_hdr(skb)->tos) } },
.proto = IPPROTO_ICMP };
security_skb_classify_flow(skb, &fl);
if (ip_route_output_key(&rt, &fl))
* Check this, icmp_send is called from the most obscure devices
* sometimes.
*/
- iph = skb_in->nh.iph;
+ iph = ip_hdr(skb_in);
if ((u8 *)iph < skb_in->head || (u8 *)(iph + 1) > skb_in->tail)
goto out;
printk(KERN_WARNING "%u.%u.%u.%u sent an invalid ICMP "
"type %u, code %u "
"error to a broadcast: %u.%u.%u.%u on %s\n",
- NIPQUAD(skb->nh.iph->saddr),
+ NIPQUAD(ip_hdr(skb)->saddr),
icmph->type, icmph->code,
NIPQUAD(iph->daddr),
skb->dev->name);
*/
case ICMP_REDIR_HOST:
case ICMP_REDIR_HOSTTOS:
- ip_rt_redirect(skb->nh.iph->saddr, iph->daddr,
+ ip_rt_redirect(ip_hdr(skb)->saddr, iph->daddr,
skb->h.icmph->un.gateway,
iph->saddr, skb->dev);
break;
skb_reserve(skb, LL_RESERVED_SPACE(dev));
skb_reset_network_header(skb);
- pip = skb->nh.iph;
+ pip = ip_hdr(skb);
skb_put(skb, sizeof(struct iphdr) + 4);
pip->version = 4;
static int igmpv3_sendpack(struct sk_buff *skb)
{
- struct iphdr *pip = skb->nh.iph;
+ struct iphdr *pip = ip_hdr(skb);
struct igmphdr *pig = skb->h.igmph;
- int iplen, igmplen;
+ const int iplen = skb->tail - skb->nh.raw;
+ const int igmplen = skb->tail - skb->h.raw;
- iplen = skb->tail - (unsigned char *)skb->nh.iph;
pip->tot_len = htons(iplen);
ip_send_check(pip);
-
- igmplen = skb->tail - (unsigned char *)skb->h.igmph;
- pig->csum = ip_compute_csum((void *)skb->h.igmph, igmplen);
+ pig->csum = ip_compute_csum(skb->h.igmph, igmplen);
return NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, skb->dev,
dst_output);
skb_reserve(skb, LL_RESERVED_SPACE(dev));
skb_reset_network_header(skb);
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
skb_put(skb, sizeof(struct iphdr) + 4);
iph->version = 4;
* that reaches zero, we must reply an ICMP control message telling
* that the packet's lifetime expired.
*/
- if (skb->nh.iph->ttl <= 1)
+ if (ip_hdr(skb)->ttl <= 1)
goto too_many_hops;
if (!xfrm4_route_forward(skb))
/* We are about to mangle packet. Copy it! */
if (skb_cow(skb, LL_RESERVED_SPACE(rt->u.dst.dev)+rt->u.dst.header_len))
goto drop;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
/* Decrease ttl after skb cow done */
ip_decrease_ttl(iph);
goto err;
}
- offset = ntohs(skb->nh.iph->frag_off);
+ offset = ntohs(ip_hdr(skb)->frag_off);
flags = offset & ~IP_OFFSET;
offset &= IP_OFFSET;
offset <<= 3; /* offset is in 8-byte chunks */
head->dev = dev;
head->tstamp = qp->stamp;
- iph = head->nh.iph;
+ iph = ip_hdr(head);
iph->frag_off = 0;
iph->tot_len = htons(len);
IP_INC_STATS_BH(IPSTATS_MIB_REASMOKS);
/* Process an incoming IP datagram fragment. */
struct sk_buff *ip_defrag(struct sk_buff *skb, u32 user)
{
- struct iphdr *iph = skb->nh.iph;
struct ipq *qp;
struct net_device *dev;
dev = skb->dev;
/* Lookup (or create) queue header */
- if ((qp = ip_find(iph, user)) != NULL) {
+ if ((qp = ip_find(ip_hdr(skb), user)) != NULL) {
struct sk_buff *ret = NULL;
spin_lock(&qp->lock);
{
if (INET_ECN_is_ce(iph->tos)) {
if (skb->protocol == htons(ETH_P_IP)) {
- IP_ECN_set_ce(skb->nh.iph);
+ IP_ECN_set_ce(ip_hdr(skb));
} else if (skb->protocol == htons(ETH_P_IPV6)) {
IP6_ECN_set_ce(skb->nh.ipv6h);
}
if (!pskb_may_pull(skb, 16))
goto drop_nolock;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
h = skb->data;
flags = *(__be16*)h;
{
struct ip_tunnel *tunnel = netdev_priv(dev);
struct net_device_stats *stats = &tunnel->stat;
- struct iphdr *old_iph = skb->nh.iph;
+ struct iphdr *old_iph = ip_hdr(skb);
struct iphdr *tiph;
u8 tos;
__be16 df;
skb_set_owner_w(new_skb, skb->sk);
dev_kfree_skb(skb);
skb = new_skb;
- old_iph = skb->nh.iph;
+ old_iph = ip_hdr(skb);
}
skb->h.raw = skb->nh.raw;
* Push down and install the IPIP header.
*/
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
iph->version = 4;
iph->ihl = sizeof(struct iphdr) >> 2;
iph->frag_off = df;
int ip_call_ra_chain(struct sk_buff *skb)
{
struct ip_ra_chain *ra;
- u8 protocol = skb->nh.iph->protocol;
+ u8 protocol = ip_hdr(skb)->protocol;
struct sock *last = NULL;
read_lock(&ip_ra_lock);
if (sk && inet_sk(sk)->num == protocol &&
(!sk->sk_bound_dev_if ||
sk->sk_bound_dev_if == skb->dev->ifindex)) {
- if (skb->nh.iph->frag_off & htons(IP_MF|IP_OFFSET)) {
+ if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
skb = ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN);
if (skb == NULL) {
read_unlock(&ip_ra_lock);
rcu_read_lock();
{
/* Note: See raw.c and net/raw.h, RAWV4_HTABLE_SIZE==MAX_INET_PROTOS */
- int protocol = skb->nh.iph->protocol;
+ int protocol = ip_hdr(skb)->protocol;
int hash;
struct sock *raw_sk;
struct net_protocol *ipprot;
/* If there maybe a raw socket we must check - if not we
* don't care less
*/
- if (raw_sk && !raw_v4_input(skb, skb->nh.iph, hash))
+ if (raw_sk && !raw_v4_input(skb, ip_hdr(skb), hash))
raw_sk = NULL;
if ((ipprot = rcu_dereference(inet_protos[hash])) != NULL) {
* Reassemble IP fragments.
*/
- if (skb->nh.iph->frag_off & htons(IP_MF|IP_OFFSET)) {
+ if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
skb = ip_defrag(skb, IP_DEFRAG_LOCAL_DELIVER);
if (!skb)
return 0;
goto drop;
}
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
if (ip_options_compile(NULL, skb)) {
IP_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
static inline int ip_rcv_finish(struct sk_buff *skb)
{
- struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
/*
* Initialise the virtual path cache for the packet. It describes
if (!pskb_may_pull(skb, sizeof(struct iphdr)))
goto inhdr_error;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
/*
* RFC1122: 3.1.2.2 MUST silently discard any IP frame that fails the checksum.
if (!pskb_may_pull(skb, iph->ihl*4))
goto inhdr_error;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
if (unlikely(ip_fast_csum((u8 *)iph, iph->ihl)))
goto inhdr_error;
if (skb->dst)
daddr = ((struct rtable*)skb->dst)->rt_spec_dst;
else
- daddr = skb->nh.iph->daddr;
+ daddr = ip_hdr(skb)->daddr;
if (sopt->rr) {
optlen = sptr[sopt->rr+1];
/*
* RFC1812 requires to fix illegal source routes.
*/
- if (memcmp(&skb->nh.iph->saddr, &start[soffset+3], 4) == 0)
+ if (memcmp(&ip_hdr(skb)->saddr,
+ &start[soffset + 3], 4) == 0)
doffset -= 4;
}
if (doffset > 3) {
optptr = iph + sizeof(struct iphdr);
opt->is_data = 0;
} else {
- optptr = opt->is_data ? opt->__data : (unsigned char*)&(skb->nh.iph[1]);
+ optptr = opt->is_data ? opt->__data :
+ (unsigned char *)&(ip_hdr(skb)[1]);
iph = optptr - sizeof(struct iphdr);
}
if (srrptr + 3 <= srrspace) {
opt->is_changed = 1;
ip_rt_get_source(&optptr[srrptr-1], rt);
- skb->nh.iph->daddr = rt->rt_dst;
+ ip_hdr(skb)->daddr = rt->rt_dst;
optptr[2] = srrptr+4;
} else if (net_ratelimit())
printk(KERN_CRIT "ip_forward(): Argh! Destination lost!\n");
}
if (opt->is_changed) {
opt->is_changed = 0;
- ip_send_check(skb->nh.iph);
+ ip_send_check(ip_hdr(skb));
}
}
struct ip_options *opt = &(IPCB(skb)->opt);
int srrspace, srrptr;
__be32 nexthop;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
unsigned char *optptr = skb_network_header(skb) + opt->srr;
struct rtable *rt = (struct rtable*)skb->dst;
struct rtable *rt2;
/* Build the IP header. */
skb_push(skb, sizeof(struct iphdr) + (opt ? opt->optlen : 0));
skb_reset_network_header(skb);
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
iph->version = 4;
iph->ihl = 5;
iph->tos = inet->tos;
/* Multicasts with ttl 0 must not go beyond the host */
- if (skb->nh.iph->ttl == 0) {
+ if (ip_hdr(skb)->ttl == 0) {
kfree_skb(skb);
return 0;
}
/* OK, we know where to send it, allocate and build IP header. */
skb_push(skb, sizeof(struct iphdr) + (opt ? opt->optlen : 0));
skb_reset_network_header(skb);
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
*((__be16 *)iph) = htons((4 << 12) | (5 << 8) | (inet->tos & 0xff));
iph->tot_len = htons(skb->len);
if (ip_dont_fragment(sk, &rt->u.dst) && !ipfragok)
* Point into the IP datagram header.
*/
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
if (unlikely((iph->frag_off & htons(IP_DF)) && !skb->local_df)) {
IP_INC_STATS(IPSTATS_MIB_FRAGFAILS);
__skb_push(frag, hlen);
skb_reset_network_header(frag);
memcpy(skb_network_header(frag), iph, hlen);
- iph = frag->nh.iph;
+ iph = ip_hdr(frag);
iph->tot_len = htons(frag->len);
ip_copy_metadata(frag, skb);
if (offset == 0)
/*
* Fill in the new header fields.
*/
- iph = skb2->nh.iph;
+ iph = ip_hdr(skb2);
iph->frag_off = htons((offset >> 3));
/* ANK: dirty, but effective trick. Upgrade options only if
*/
data = skb_put(skb, fragheaderlen + fraggap);
skb_reset_network_header(skb);
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
data += fragheaderlen;
skb->h.raw = data;
struct flowi fl = { .nl_u = { .ip4_u =
{ .daddr = daddr,
.saddr = rt->rt_spec_dst,
- .tos = RT_TOS(skb->nh.iph->tos) } },
+ .tos = RT_TOS(ip_hdr(skb)->tos) } },
/* Not quite clean, but right. */
.uli_u = { .ports =
{ .sport = skb->h.th->dest,
with locally disabled BH and that sk cannot be already spinlocked.
*/
bh_lock_sock(sk);
- inet->tos = skb->nh.iph->tos;
+ inet->tos = ip_hdr(skb)->tos;
sk->sk_priority = skb->priority;
- sk->sk_protocol = skb->nh.iph->protocol;
+ sk->sk_protocol = ip_hdr(skb)->protocol;
ip_append_data(sk, ip_reply_glue_bits, arg->iov->iov_base, len, 0,
&ipc, rt, MSG_DONTWAIT);
if ((skb = skb_peek(&sk->sk_write_queue)) != NULL) {
struct in_pktinfo info;
struct rtable *rt = (struct rtable *)skb->dst;
- info.ipi_addr.s_addr = skb->nh.iph->daddr;
+ info.ipi_addr.s_addr = ip_hdr(skb)->daddr;
if (rt) {
info.ipi_ifindex = rt->rt_iif;
info.ipi_spec_dst.s_addr = rt->rt_spec_dst;
static void ip_cmsg_recv_ttl(struct msghdr *msg, struct sk_buff *skb)
{
- int ttl = skb->nh.iph->ttl;
+ int ttl = ip_hdr(skb)->ttl;
put_cmsg(msg, SOL_IP, IP_TTL, sizeof(int), &ttl);
}
static void ip_cmsg_recv_tos(struct msghdr *msg, struct sk_buff *skb)
{
- put_cmsg(msg, SOL_IP, IP_TOS, 1, &skb->nh.iph->tos);
+ put_cmsg(msg, SOL_IP, IP_TOS, 1, &ip_hdr(skb)->tos);
}
static void ip_cmsg_recv_opts(struct msghdr *msg, struct sk_buff *skb)
if (IPCB(skb)->opt.optlen == 0)
return;
- put_cmsg(msg, SOL_IP, IP_RECVOPTS, IPCB(skb)->opt.optlen, skb->nh.iph+1);
+ put_cmsg(msg, SOL_IP, IP_RECVOPTS, IPCB(skb)->opt.optlen,
+ ip_hdr(skb) + 1);
}
skb_put(skb, sizeof(struct iphdr));
skb_reset_network_header(skb);
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
iph->daddr = daddr;
serr = SKB_EXT_ERR(skb);
struct inet_sock *inet = inet_sk(sk);
sin->sin_family = AF_INET;
- sin->sin_addr.s_addr = skb->nh.iph->saddr;
+ sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
sin->sin_port = 0;
memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
if (inet->cmsg_flags)
static int ipcomp_decompress(struct xfrm_state *x, struct sk_buff *skb)
{
- int err, plen, dlen;
struct ipcomp_data *ipcd = x->data;
- u8 *start, *scratch;
- struct crypto_comp *tfm;
- int cpu;
-
- plen = skb->len;
- dlen = IPCOMP_SCRATCH_SIZE;
- start = skb->data;
+ const int plen = skb->len;
+ int dlen = IPCOMP_SCRATCH_SIZE;
+ const u8 *start = skb->data;
+ const int cpu = get_cpu();
+ u8 *scratch = *per_cpu_ptr(ipcomp_scratches, cpu);
+ struct crypto_comp *tfm = *per_cpu_ptr(ipcd->tfms, cpu);
+ int err = crypto_comp_decompress(tfm, start, plen, scratch, &dlen);
- cpu = get_cpu();
- scratch = *per_cpu_ptr(ipcomp_scratches, cpu);
- tfm = *per_cpu_ptr(ipcd->tfms, cpu);
-
- err = crypto_comp_decompress(tfm, start, plen, scratch, &dlen);
if (err)
goto out;
skb->ip_summed = CHECKSUM_NONE;
/* Remove ipcomp header and decompress original payload */
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
ipch = (void *)skb->data;
iph->protocol = ipch->nexthdr;
skb->h.raw = skb->nh.raw + sizeof(*ipch);
static int ipcomp_compress(struct xfrm_state *x, struct sk_buff *skb)
{
- int err, plen, dlen, ihlen;
- struct iphdr *iph = skb->nh.iph;
struct ipcomp_data *ipcd = x->data;
- u8 *start, *scratch;
- struct crypto_comp *tfm;
- int cpu;
+ const int ihlen = ip_hdrlen(skb);
+ const int plen = skb->len - ihlen;
+ int dlen = IPCOMP_SCRATCH_SIZE;
+ u8 *start = skb->data + ihlen;
+ const int cpu = get_cpu();
+ u8 *scratch = *per_cpu_ptr(ipcomp_scratches, cpu);
+ struct crypto_comp *tfm = *per_cpu_ptr(ipcd->tfms, cpu);
+ int err = crypto_comp_compress(tfm, start, plen, scratch, &dlen);
- ihlen = iph->ihl * 4;
- plen = skb->len - ihlen;
- dlen = IPCOMP_SCRATCH_SIZE;
- start = skb->data + ihlen;
-
- cpu = get_cpu();
- scratch = *per_cpu_ptr(ipcomp_scratches, cpu);
- tfm = *per_cpu_ptr(ipcd->tfms, cpu);
-
- err = crypto_comp_compress(tfm, start, plen, scratch, &dlen);
if (err)
goto out;
static int ipcomp_output(struct xfrm_state *x, struct sk_buff *skb)
{
int err;
- struct iphdr *iph;
struct ip_comp_hdr *ipch;
struct ipcomp_data *ipcd = x->data;
int hdr_len = 0;
+ struct iphdr *iph = ip_hdr(skb);
- iph = skb->nh.iph;
iph->tot_len = htons(skb->len);
hdr_len = iph->ihl * 4;
if ((skb->len - hdr_len) < ipcd->threshold) {
goto out_ok;
err = ipcomp_compress(x, skb);
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
if (err) {
goto out_ok;
/* Construct IP header */
skb_reset_network_header(skb);
- h = skb->nh.iph;
+ h = ip_hdr(skb);
h->version = 4;
h->ihl = 5;
h->tot_len = htons(sizeof(struct bootp_pkt));
sizeof(struct udphdr)))
goto drop;
- b = (struct bootp_pkt *) skb->nh.iph;
+ b = (struct bootp_pkt *)skb_network_header(skb);
h = &b->iph;
if (h->ihl != 5 || h->version != 4 || h->protocol != IPPROTO_UDP)
if (!pskb_may_pull(skb, skb->len))
goto drop;
- b = (struct bootp_pkt *) skb->nh.iph;
+ b = (struct bootp_pkt *)skb_network_header(skb);
h = &b->iph;
/* One reply at a time, please. */
#endif
}
-static inline void ipip_ecn_decapsulate(struct iphdr *outer_iph, struct sk_buff *skb)
+static inline void ipip_ecn_decapsulate(const struct iphdr *outer_iph,
+ struct sk_buff *skb)
{
- struct iphdr *inner_iph = skb->nh.iph;
+ struct iphdr *inner_iph = ip_hdr(skb);
if (INET_ECN_is_ce(outer_iph->tos))
IP_ECN_set_ce(inner_iph);
static int ipip_rcv(struct sk_buff *skb)
{
- struct iphdr *iph;
struct ip_tunnel *tunnel;
-
- iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
read_lock(&ipip_lock);
if ((tunnel = ipip_tunnel_lookup(iph->saddr, iph->daddr)) != NULL) {
__be16 df = tiph->frag_off;
struct rtable *rt; /* Route to the other host */
struct net_device *tdev; /* Device to other host */
- struct iphdr *old_iph = skb->nh.iph;
+ struct iphdr *old_iph = ip_hdr(skb);
struct iphdr *iph; /* Our new IP header */
int max_headroom; /* The extra header space needed */
__be32 dst = tiph->daddr;
skb_set_owner_w(new_skb, skb->sk);
dev_kfree_skb(skb);
skb = new_skb;
- old_iph = skb->nh.iph;
+ old_iph = ip_hdr(skb);
}
skb->h.raw = skb->nh.raw;
* Push down and install the IPIP header.
*/
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
iph->version = 4;
iph->ihl = sizeof(struct iphdr)>>2;
iph->frag_off = df;
atomic_dec(&cache_resolve_queue_len);
while ((skb=skb_dequeue(&c->mfc_un.unres.unresolved))) {
- if (skb->nh.iph->version == 0) {
+ if (ip_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = (struct nlmsghdr *)skb_pull(skb, sizeof(struct iphdr));
nlh->nlmsg_type = NLMSG_ERROR;
nlh->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr));
*/
while ((skb=__skb_dequeue(&uc->mfc_un.unres.unresolved))) {
- if (skb->nh.iph->version == 0) {
+ if (ip_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = (struct nlmsghdr *)skb_pull(skb, sizeof(struct iphdr));
if (ipmr_fill_mroute(skb, c, NLMSG_DATA(nlh)) > 0) {
msg->im_msgtype = IGMPMSG_WHOLEPKT;
msg->im_mbz = 0;
msg->im_vif = reg_vif_num;
- skb->nh.iph->ihl = sizeof(struct iphdr) >> 2;
- skb->nh.iph->tot_len = htons(ntohs(pkt->nh.iph->tot_len) + sizeof(struct iphdr));
+ ip_hdr(skb)->ihl = sizeof(struct iphdr) >> 2;
+ ip_hdr(skb)->tot_len = htons(ntohs(ip_hdr(pkt)->tot_len) +
+ sizeof(struct iphdr));
} else
#endif
{
* Copy the IP header
*/
- skb->nh.iph = (struct iphdr *)skb_put(skb, ihl);
+ skb->nh.raw = skb_put(skb, ihl);
memcpy(skb->data,pkt->data,ihl);
- skb->nh.iph->protocol = 0; /* Flag to the kernel this is a route add */
- msg = (struct igmpmsg*)skb->nh.iph;
+ ip_hdr(skb)->protocol = 0; /* Flag to the kernel this is a route add */
+ msg = (struct igmpmsg *)skb_network_header(skb);
msg->im_vif = vifi;
skb->dst = dst_clone(pkt->dst);
igmp->type =
msg->im_msgtype = assert;
igmp->code = 0;
- skb->nh.iph->tot_len=htons(skb->len); /* Fix the length */
+ ip_hdr(skb)->tot_len = htons(skb->len); /* Fix the length */
skb->h.raw = skb->nh.raw;
}
{
int err;
struct mfc_cache *c;
+ const struct iphdr *iph = ip_hdr(skb);
spin_lock_bh(&mfc_unres_lock);
for (c=mfc_unres_queue; c; c=c->next) {
- if (c->mfc_mcastgrp == skb->nh.iph->daddr &&
- c->mfc_origin == skb->nh.iph->saddr)
+ if (c->mfc_mcastgrp == iph->daddr &&
+ c->mfc_origin == iph->saddr)
break;
}
/*
* Fill in the new cache entry
*/
- c->mfc_parent=-1;
- c->mfc_origin=skb->nh.iph->saddr;
- c->mfc_mcastgrp=skb->nh.iph->daddr;
+ c->mfc_parent = -1;
+ c->mfc_origin = iph->saddr;
+ c->mfc_mcastgrp = iph->daddr;
/*
* Reflect first query at mrouted.
static void ip_encap(struct sk_buff *skb, __be32 saddr, __be32 daddr)
{
struct iphdr *iph;
- struct iphdr *old_iph = skb->nh.iph;
+ struct iphdr *old_iph = ip_hdr(skb);
skb_push(skb, sizeof(struct iphdr));
- skb->h.ipiph = skb->nh.iph;
+ skb->h.raw = skb->nh.raw;
skb_reset_network_header(skb);
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
iph->version = 4;
iph->tos = old_iph->tos;
static void ipmr_queue_xmit(struct sk_buff *skb, struct mfc_cache *c, int vifi)
{
- struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
struct vif_device *vif = &vif_table[vifi];
struct net_device *dev;
struct rtable *rt;
dst_release(skb->dst);
skb->dst = &rt->u.dst;
- iph = skb->nh.iph;
- ip_decrease_ttl(iph);
+ ip_decrease_ttl(ip_hdr(skb));
/* FIXME: forward and output firewalls used to be called here.
* What do we do with netfilter? -- RR */
* Forward the frame
*/
for (ct = cache->mfc_un.res.maxvif-1; ct >= cache->mfc_un.res.minvif; ct--) {
- if (skb->nh.iph->ttl > cache->mfc_un.res.ttls[ct]) {
+ if (ip_hdr(skb)->ttl > cache->mfc_un.res.ttls[ct]) {
if (psend != -1) {
struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
if (skb2)
if (IPCB(skb)->opt.router_alert) {
if (ip_call_ra_chain(skb))
return 0;
- } else if (skb->nh.iph->protocol == IPPROTO_IGMP){
+ } else if (ip_hdr(skb)->protocol == IPPROTO_IGMP){
/* IGMPv1 (and broken IGMPv2 implementations sort of
Cisco IOS <= 11.2(8)) do not put router alert
option to IGMP packets destined to routable
}
read_lock(&mrt_lock);
- cache = ipmr_cache_find(skb->nh.iph->saddr, skb->nh.iph->daddr);
+ cache = ipmr_cache_find(ip_hdr(skb)->saddr, ip_hdr(skb)->daddr);
/*
* No usable cache entry
if (cache==NULL) {
struct sk_buff *skb2;
+ struct iphdr *iph;
struct net_device *dev;
int vif;
skb_push(skb2, sizeof(struct iphdr));
skb_reset_network_header(skb2);
- skb2->nh.iph->ihl = sizeof(struct iphdr)>>2;
- skb2->nh.iph->saddr = rt->rt_src;
- skb2->nh.iph->daddr = rt->rt_dst;
- skb2->nh.iph->version = 0;
+ iph = ip_hdr(skb2);
+ iph->ihl = sizeof(struct iphdr) >> 2;
+ iph->saddr = rt->rt_src;
+ iph->daddr = rt->rt_dst;
+ iph->version = 0;
err = ipmr_cache_unresolved(vif, skb2);
read_unlock(&mrt_lock);
return err;
int ip_vs_skb_replace(struct sk_buff *skb, gfp_t pri,
char *o_buf, int o_len, char *n_buf, int n_len)
{
- struct iphdr *iph;
int diff;
int o_offset;
int o_left;
}
/* must update the iph total length here */
- iph = skb->nh.iph;
- iph->tot_len = htons(skb->len);
+ ip_hdr(skb)->tot_len = htons(skb->len);
LeaveFunction(9);
return 0;
__be16 ports[2])
{
struct ip_vs_conn *cp = NULL;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
struct ip_vs_dest *dest;
struct ip_vs_conn *ct;
__be16 dport; /* destination port to forward */
ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
{
struct ip_vs_conn *cp = NULL;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
struct ip_vs_dest *dest;
__be16 _ports[2], *pptr;
struct ip_vs_protocol *pp)
{
__be16 _ports[2], *pptr;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
pptr = skb_header_pointer(skb, iph->ihl*4,
sizeof(_ports), _ports);
{
skb = ip_defrag(skb, user);
if (skb)
- ip_send_check(skb->nh.iph);
+ ip_send_check(ip_hdr(skb));
return skb;
}
void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
struct ip_vs_conn *cp, int inout)
{
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
unsigned int icmp_offset = iph->ihl*4;
struct icmphdr *icmph = (struct icmphdr *)(skb_network_header(skb) +
icmp_offset);
*related = 1;
/* reassemble IP fragments */
- if (skb->nh.iph->frag_off & htons(IP_MF|IP_OFFSET)) {
+ if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
skb = ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT);
if (!skb)
return NF_STOLEN;
*pskb = skb;
}
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
offset = ihl = iph->ihl * 4;
ic = skb_header_pointer(skb, offset, sizeof(_icmph), &_icmph);
if (ic == NULL)
if (skb->ipvs_property)
return NF_ACCEPT;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
if (unlikely(iph->protocol == IPPROTO_ICMP)) {
int related, verdict = ip_vs_out_icmp(pskb, &related);
if (related)
return verdict;
skb = *pskb;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
}
pp = ip_vs_proto_get(iph->protocol);
skb = ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT);
if (!skb)
return NF_STOLEN;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
*pskb = skb;
}
if (pp->snat_handler && !pp->snat_handler(pskb, pp, cp))
goto drop;
skb = *pskb;
- skb->nh.iph->saddr = cp->vaddr;
- ip_send_check(skb->nh.iph);
+ ip_hdr(skb)->saddr = cp->vaddr;
+ ip_send_check(ip_hdr(skb));
/* For policy routing, packets originating from this
* machine itself may be routed differently to packets
*related = 1;
/* reassemble IP fragments */
- if (skb->nh.iph->frag_off & htons(IP_MF|IP_OFFSET)) {
+ if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
skb = ip_vs_gather_frags(skb,
hooknum == NF_IP_LOCAL_IN ?
IP_DEFRAG_VS_IN : IP_DEFRAG_VS_FWD);
*pskb = skb;
}
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
offset = ihl = iph->ihl * 4;
ic = skb_header_pointer(skb, offset, sizeof(_icmph), &_icmph);
if (ic == NULL)
|| skb->dev == &loopback_dev || skb->sk)) {
IP_VS_DBG(12, "packet type=%d proto=%d daddr=%d.%d.%d.%d ignored\n",
skb->pkt_type,
- skb->nh.iph->protocol,
- NIPQUAD(skb->nh.iph->daddr));
+ ip_hdr(skb)->protocol,
+ NIPQUAD(ip_hdr(skb)->daddr));
return NF_ACCEPT;
}
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
if (unlikely(iph->protocol == IPPROTO_ICMP)) {
int related, verdict = ip_vs_in_icmp(pskb, &related, hooknum);
if (related)
return verdict;
skb = *pskb;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
}
/* Protocol supported? */
{
int r;
- if ((*pskb)->nh.iph->protocol != IPPROTO_ICMP)
+ if (ip_hdr(*pskb)->protocol != IPPROTO_ICMP)
return NF_ACCEPT;
return ip_vs_in_icmp(pskb, &r, hooknum);
{
struct ip_vs_dest *dest;
struct ip_vs_dh_bucket *tbl;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
IP_VS_DBG(6, "ip_vs_dh_schedule(): Scheduling...\n");
return 0;
if (cp->app_data == &ip_vs_ftp_pasv) {
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
th = (struct tcphdr *)&(((char *)iph)[iph->ihl*4]);
data = (char *)th + (th->doff << 2);
data_limit = (*pskb)->tail;
/*
* Detecting whether it is passive
*/
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
th = (struct tcphdr *)&(((char *)iph)[iph->ihl*4]);
/* Since there may be OPTIONS in the TCP packet and the HLEN is
struct ip_vs_dest *dest;
struct ip_vs_lblc_table *tbl;
struct ip_vs_lblc_entry *en;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
IP_VS_DBG(6, "ip_vs_lblc_schedule(): Scheduling...\n");
struct ip_vs_dest *dest;
struct ip_vs_lblcr_table *tbl;
struct ip_vs_lblcr_entry *en;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
IP_VS_DBG(6, "ip_vs_lblcr_schedule(): Scheduling...\n");
}
if (th->syn &&
- (svc = ip_vs_service_get(skb->mark, skb->nh.iph->protocol,
- skb->nh.iph->daddr, th->dest))) {
+ (svc = ip_vs_service_get(skb->mark, ip_hdr(skb)->protocol,
+ ip_hdr(skb)->daddr, th->dest))) {
if (ip_vs_todrop()) {
/*
* It seems that we are very loaded.
return 0;
}
- tcph = (void *)(*pskb)->nh.iph + tcphoff;
+ tcph = (void *)ip_hdr(*pskb) + tcphoff;
tcph->source = cp->vport;
/* Adjust TCP checksums */
return 0;
}
- tcph = (void *)(*pskb)->nh.iph + tcphoff;
+ tcph = (void *)ip_hdr(*pskb) + tcphoff;
tcph->dest = cp->dport;
/*
case CHECKSUM_NONE:
skb->csum = skb_checksum(skb, tcphoff, skb->len - tcphoff, 0);
case CHECKSUM_COMPLETE:
- if (csum_tcpudp_magic(skb->nh.iph->saddr, skb->nh.iph->daddr,
+ if (csum_tcpudp_magic(ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
skb->len - tcphoff,
- skb->nh.iph->protocol, skb->csum)) {
+ ip_hdr(skb)->protocol, skb->csum)) {
IP_VS_DBG_RL_PKT(0, pp, skb, 0,
"Failed checksum for");
return 0;
return 0;
}
- if ((svc = ip_vs_service_get(skb->mark, skb->nh.iph->protocol,
- skb->nh.iph->daddr, uh->dest))) {
+ if ((svc = ip_vs_service_get(skb->mark, ip_hdr(skb)->protocol,
+ ip_hdr(skb)->daddr, uh->dest))) {
if (ip_vs_todrop()) {
/*
* It seems that we are very loaded.
return 0;
}
- udph = (void *)(*pskb)->nh.iph + udphoff;
+ udph = (void *)ip_hdr(*pskb) + udphoff;
udph->source = cp->vport;
/*
return 0;
}
- udph = (void *)(*pskb)->nh.iph + udphoff;
+ udph = (void *)ip_hdr(*pskb) + udphoff;
udph->dest = cp->dport;
/*
skb->csum = skb_checksum(skb, udphoff,
skb->len - udphoff, 0);
case CHECKSUM_COMPLETE:
- if (csum_tcpudp_magic(skb->nh.iph->saddr,
- skb->nh.iph->daddr,
+ if (csum_tcpudp_magic(ip_hdr(skb)->saddr,
+ ip_hdr(skb)->daddr,
skb->len - udphoff,
- skb->nh.iph->protocol,
+ ip_hdr(skb)->protocol,
skb->csum)) {
IP_VS_DBG_RL_PKT(0, pp, skb, 0,
"Failed checksum for");
{
struct ip_vs_dest *dest;
struct ip_vs_sh_bucket *tbl;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
IP_VS_DBG(6, "ip_vs_sh_schedule(): Scheduling...\n");
struct ip_vs_protocol *pp)
{
struct rtable *rt; /* Route to the other host */
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
u8 tos = iph->tos;
int mtu;
struct flowi fl = {
ip_rt_put(rt);
return NF_STOLEN;
}
- ip_send_check(skb->nh.iph);
+ ip_send_check(ip_hdr(skb));
/* drop old route */
dst_release(skb->dst);
{
struct rtable *rt; /* Route to the other host */
int mtu;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
EnterFunction(10);
/* mangle the packet */
if (pp->dnat_handler && !pp->dnat_handler(&skb, pp, cp))
goto tx_error;
- skb->nh.iph->daddr = cp->daddr;
- ip_send_check(skb->nh.iph);
+ ip_hdr(skb)->daddr = cp->daddr;
+ ip_send_check(ip_hdr(skb));
IP_VS_DBG_PKT(10, pp, skb, 0, "After DNAT");
{
struct rtable *rt; /* Route to the other host */
struct net_device *tdev; /* Device to other host */
- struct iphdr *old_iph = skb->nh.iph;
+ struct iphdr *old_iph = ip_hdr(skb);
u8 tos = old_iph->tos;
__be16 df = old_iph->frag_off;
struct iphdr *iph; /* Our new IP header */
}
kfree_skb(skb);
skb = new_skb;
- old_iph = skb->nh.iph;
+ old_iph = ip_hdr(skb);
}
skb->h.raw = (void *) old_iph;
/*
* Push down and install the IPIP header.
*/
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
iph->version = 4;
iph->ihl = sizeof(struct iphdr)>>2;
iph->frag_off = df;
struct ip_vs_protocol *pp)
{
struct rtable *rt; /* Route to the other host */
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
int mtu;
EnterFunction(10);
ip_rt_put(rt);
return NF_STOLEN;
}
- ip_send_check(skb->nh.iph);
+ ip_send_check(ip_hdr(skb));
/* drop old route */
dst_release(skb->dst);
* mangle and send the packet here (only for VS/NAT)
*/
- if (!(rt = __ip_vs_get_out_rt(cp, RT_TOS(skb->nh.iph->tos))))
+ if (!(rt = __ip_vs_get_out_rt(cp, RT_TOS(ip_hdr(skb)->tos))))
goto tx_error_icmp;
/* MTU checking */
mtu = dst_mtu(&rt->u.dst);
- if ((skb->len > mtu) && (skb->nh.iph->frag_off & htons(IP_DF))) {
+ if ((skb->len > mtu) && (ip_hdr(skb)->frag_off & htons(IP_DF))) {
ip_rt_put(rt);
icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu));
IP_VS_DBG_RL("ip_vs_in_icmp(): frag needed\n");
/* route_me_harder function, used by iptable_nat, iptable_mangle + ip_queue */
int ip_route_me_harder(struct sk_buff **pskb, unsigned addr_type)
{
- struct iphdr *iph = (*pskb)->nh.iph;
+ const struct iphdr *iph = ip_hdr(*pskb);
struct rtable *rt;
struct flowi fl = {};
struct dst_entry *odst;
struct ip_rt_info *rt_info = nf_info_reroute(info);
if (info->hook == NF_IP_LOCAL_OUT) {
- const struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
rt_info->tos = iph->tos;
rt_info->daddr = iph->daddr;
const struct ip_rt_info *rt_info = nf_info_reroute(info);
if (info->hook == NF_IP_LOCAL_OUT) {
- struct iphdr *iph = (*pskb)->nh.iph;
+ const struct iphdr *iph = ip_hdr(*pskb);
if (!(iph->tos == rt_info->tos
&& iph->daddr == rt_info->daddr
__sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
unsigned int dataoff, u_int8_t protocol)
{
- struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
__sum16 csum = 0;
switch (skb->ip_summed) {
struct ip_conntrack_tuple_hash *h;
struct ip_conntrack *ct;
- IP_NF_ASSERT((skb->nh.iph->frag_off & htons(IP_OFFSET)) == 0);
+ IP_NF_ASSERT((ip_hdr(skb)->frag_off & htons(IP_OFFSET)) == 0);
- if (!ip_ct_get_tuple(skb->nh.iph, skb, ip_hdrlen(skb), &tuple,proto))
+ if (!ip_ct_get_tuple(ip_hdr(skb), skb, ip_hdrlen(skb), &tuple,proto))
return NULL;
/* look for tuple match */
}
/* Never happen */
- if ((*pskb)->nh.iph->frag_off & htons(IP_OFFSET)) {
+ if (ip_hdr(*pskb)->frag_off & htons(IP_OFFSET)) {
if (net_ratelimit()) {
printk(KERN_ERR "ip_conntrack_in: Frag of proto %u (hook=%u)\n",
- (*pskb)->nh.iph->protocol, hooknum);
+ ip_hdr(*pskb)->protocol, hooknum);
}
return NF_DROP;
}
if ((*pskb)->pkt_type == PACKET_BROADCAST) {
printk("Broadcast packet!\n");
return NF_ACCEPT;
- } else if (((*pskb)->nh.iph->daddr & htonl(0x000000FF))
+ } else if ((ip_hdr(*pskb)->daddr & htonl(0x000000FF))
== htonl(0x000000FF)) {
printk("Should bcast: %u.%u.%u.%u->%u.%u.%u.%u (sk=%p, ptype=%u)\n",
- NIPQUAD((*pskb)->nh.iph->saddr),
- NIPQUAD((*pskb)->nh.iph->daddr),
+ NIPQUAD(ip_hdr(*pskb)->saddr),
+ NIPQUAD(ip_hdr(*pskb)->daddr),
(*pskb)->sk, (*pskb)->pkt_type);
}
#endif
/* rcu_read_lock()ed by nf_hook_slow */
- proto = __ip_conntrack_proto_find((*pskb)->nh.iph->protocol);
+ proto = __ip_conntrack_proto_find(ip_hdr(*pskb)->protocol);
/* It may be an special packet, error, unclean...
* inverse of the return code tells to the netfilter
if (do_acct) {
ct->counters[CTINFO2DIR(ctinfo)].packets++;
ct->counters[CTINFO2DIR(ctinfo)].bytes +=
- ntohs(skb->nh.iph->tot_len);
+ ntohs(ip_hdr(skb)->tot_len);
if ((ct->counters[CTINFO2DIR(ctinfo)].packets & 0x80000000)
|| (ct->counters[CTINFO2DIR(ctinfo)].bytes & 0x80000000))
event |= IPCT_COUNTER_FILLING;
local_bh_enable();
if (skb)
- ip_send_check(skb->nh.iph);
+ ip_send_check(ip_hdr(skb));
return skb;
}
/* Process each TPKT */
while (get_tpkt_data(pskb, ct, ctinfo, &data, &datalen, &dataoff)) {
DEBUGP("ip_ct_h245: TPKT %u.%u.%u.%u->%u.%u.%u.%u, len=%d\n",
- NIPQUAD((*pskb)->nh.iph->saddr),
- NIPQUAD((*pskb)->nh.iph->daddr), datalen);
+ NIPQUAD(ip_hdr(*pskb)->saddr),
+ NIPQUAD(ip_hdr(*pskb)->daddr), datalen);
/* Decode H.245 signal */
ret = DecodeMultimediaSystemControlMessage(data, datalen,
/* Process each TPKT */
while (get_tpkt_data(pskb, ct, ctinfo, &data, &datalen, &dataoff)) {
DEBUGP("ip_ct_q931: TPKT %u.%u.%u.%u->%u.%u.%u.%u, len=%d\n",
- NIPQUAD((*pskb)->nh.iph->saddr),
- NIPQUAD((*pskb)->nh.iph->daddr), datalen);
+ NIPQUAD(ip_hdr(*pskb)->saddr),
+ NIPQUAD(ip_hdr(*pskb)->daddr), datalen);
/* Decode Q.931 signal */
ret = DecodeQ931(data, datalen, &q931);
if (data == NULL)
goto accept;
DEBUGP("ip_ct_ras: RAS message %u.%u.%u.%u->%u.%u.%u.%u, len=%d\n",
- NIPQUAD((*pskb)->nh.iph->saddr),
- NIPQUAD((*pskb)->nh.iph->daddr), datalen);
+ NIPQUAD(ip_hdr(*pskb)->saddr),
+ NIPQUAD(ip_hdr(*pskb)->daddr), datalen);
/* Decode RAS message */
ret = DecodeRasMessage(data, datalen, &ras);
struct ip_conntrack *ct, enum ip_conntrack_info ctinfo)
{
struct ip_conntrack_expect *exp;
- struct iphdr *iph = (*pskb)->nh.iph;
+ struct iphdr *iph = ip_hdr(*pskb);
struct rtable *rt = (struct rtable *)(*pskb)->dst;
struct in_device *in_dev;
__be32 mask = 0;
enum ip_conntrack_info ctinfo)
{
enum sctp_conntrack newconntrack, oldsctpstate;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
sctp_sctphdr_t _sctph, *sh;
sctp_chunkhdr_t _sch, *sch;
u_int32_t offset, count;
const struct sk_buff *skb)
{
enum sctp_conntrack newconntrack;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
sctp_sctphdr_t _sctph, *sh;
sctp_chunkhdr_t _sch, *sch;
u_int32_t offset, count;
struct ip_conntrack *conntrack,
enum ip_conntrack_dir dir)
{
- struct iphdr *iph = skb->nh.iph;
- struct tcphdr *tcph = (void *)skb->nh.iph + ip_hdrlen(skb);
+ struct iphdr *iph = ip_hdr(skb);
+ struct tcphdr *tcph = (void *)iph + ip_hdrlen(skb);
__u32 end;
#ifdef DEBUGP_VARS
struct ip_ct_tcp_state *sender = &conntrack->proto.tcp.seen[dir];
enum ip_conntrack_info *ctinfo,
unsigned int hooknum)
{
- struct iphdr *iph = skb->nh.iph;
+ const unsigned int hdrlen = ip_hdrlen(skb);
struct tcphdr _tcph, *th;
- unsigned int tcplen = skb->len - iph->ihl * 4;
+ unsigned int tcplen = skb->len - hdrlen;
u_int8_t tcpflags;
/* Smaller that minimal TCP header? */
- th = skb_header_pointer(skb, iph->ihl * 4,
+ th = skb_header_pointer(skb, hdrlen,
sizeof(_tcph), &_tcph);
if (th == NULL) {
if (LOG_INVALID(IPPROTO_TCP))
*/
/* FIXME: Source route IP option packets --RR */
if (ip_conntrack_checksum && hooknum == NF_IP_PRE_ROUTING &&
- nf_ip_checksum(skb, hooknum, iph->ihl * 4, IPPROTO_TCP)) {
+ nf_ip_checksum(skb, hooknum, hdrlen, IPPROTO_TCP)) {
if (LOG_INVALID(IPPROTO_TCP))
nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL,
"ip_ct_tcp: bad TCP checksum ");
{
enum tcp_conntrack new_state, old_state;
enum ip_conntrack_dir dir;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
struct tcphdr *th, _tcph;
unsigned long timeout;
unsigned int index;
const struct sk_buff *skb)
{
enum tcp_conntrack new_state;
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
struct tcphdr *th, _tcph;
#ifdef DEBUGP_VARS
struct ip_ct_tcp_state *sender = &conntrack->proto.tcp.seen[0];
static int udp_error(struct sk_buff *skb, enum ip_conntrack_info *ctinfo,
unsigned int hooknum)
{
- struct iphdr *iph = skb->nh.iph;
- unsigned int udplen = skb->len - iph->ihl * 4;
+ const unsigned int hdrlen = ip_hdrlen(skb);
+ unsigned int udplen = skb->len - hdrlen;
struct udphdr _hdr, *hdr;
/* Header is too small? */
- hdr = skb_header_pointer(skb, iph->ihl*4, sizeof(_hdr), &_hdr);
+ hdr = skb_header_pointer(skb, hdrlen, sizeof(_hdr), &_hdr);
if (hdr == NULL) {
if (LOG_INVALID(IPPROTO_UDP))
nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL,
* because the checksum is assumed to be correct.
* FIXME: Source route IP option packets --RR */
if (ip_conntrack_checksum && hooknum == NF_IP_PRE_ROUTING &&
- nf_ip_checksum(skb, hooknum, iph->ihl * 4, IPPROTO_UDP)) {
+ nf_ip_checksum(skb, hooknum, hdrlen, IPPROTO_UDP)) {
if (LOG_INVALID(IPPROTO_UDP))
nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL,
"ip_ct_udp: bad UDP checksum ");
#endif
/* Gather fragments. */
- if ((*pskb)->nh.iph->frag_off & htons(IP_MF|IP_OFFSET)) {
+ if (ip_hdr(*pskb)->frag_off & htons(IP_MF | IP_OFFSET)) {
*pskb = ip_ct_gather_frags(*pskb,
hooknum == NF_IP_PRE_ROUTING ?
IP_DEFRAG_CONNTRACK_IN :
unsigned char *data;
BUG_ON(skb_is_nonlinear(skb));
- data = (unsigned char *)skb->nh.iph + dataoff;
+ data = skb_network_header(skb) + dataoff;
/* move post-replacement */
memmove(data + match_offset + rep_len,
}
/* fix IP hdr checksum information */
- skb->nh.iph->tot_len = htons(skb->len);
- ip_send_check(skb->nh.iph);
+ ip_hdr(skb)->tot_len = htons(skb->len);
+ ip_send_check(ip_hdr(skb));
}
/* Unusual, but possible case. */
SKB_LINEAR_ASSERT(*pskb);
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
tcph = (void *)iph + iph->ihl*4;
oldlen = (*pskb)->len - iph->ihl*4;
int datalen, oldlen;
/* UDP helpers might accidentally mangle the wrong packet */
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
if ((*pskb)->len < iph->ihl*4 + sizeof(*udph) +
match_offset + match_len)
return 0;
&& !enlarge_skb(pskb, rep_len - match_len))
return 0;
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
udph = (void *)iph + iph->ihl*4;
oldlen = (*pskb)->len - iph->ihl*4;
buf.port = htons(port);
addroff += dataoff;
- if ((*pskb)->nh.iph->protocol == IPPROTO_TCP) {
+ if (ip_hdr(*pskb)->protocol == IPPROTO_TCP) {
if (!ip_nat_mangle_tcp_packet(pskb, ct, ctinfo,
addroff, sizeof(buf),
(char *) &buf, sizeof(buf))) {
if (hooknum == NF_IP_LOCAL_OUT
&& mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)
- warn_if_extra_mangle((*pskb)->nh.iph->daddr,
+ warn_if_extra_mangle(ip_hdr(*pskb)->daddr,
mr->range[0].min_ip);
return ip_nat_setup_info(ct, &mr->range[0], hooknum);
enum ip_conntrack_info ctinfo,
struct sk_buff **pskb)
{
- struct iphdr *iph = (*pskb)->nh.iph;
+ struct iphdr *iph = ip_hdr(*pskb);
struct udphdr *udph = (struct udphdr *)((__be32 *)iph + iph->ihl);
u_int16_t udplen = ntohs(udph->len);
u_int16_t paylen = udplen - sizeof(struct udphdr);
{
int dir = CTINFO2DIR(ctinfo);
unsigned int ret;
- struct iphdr *iph = (*pskb)->nh.iph;
+ struct iphdr *iph = ip_hdr(*pskb);
struct udphdr *udph = (struct udphdr *)((u_int32_t *)iph + iph->ihl);
/* SNMP replies and originating SNMP traps get mangled */
/* We never see fragments: conntrack defrags on pre-routing
and local-out, and ip_nat_out protects post-routing. */
- IP_NF_ASSERT(!((*pskb)->nh.iph->frag_off
+ IP_NF_ASSERT(!(ip_hdr(*pskb)->frag_off
& htons(IP_MF|IP_OFFSET)));
ct = ip_conntrack_get(*pskb, &ctinfo);
/* Exception: ICMP redirect to new connection (not in
hash table yet). We must not let this through, in
case we're doing NAT to the same network. */
- if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) {
+ if (ip_hdr(*pskb)->protocol == IPPROTO_ICMP) {
struct icmphdr _hdr, *hp;
hp = skb_header_pointer(*pskb, ip_hdrlen(*pskb),
switch (ctinfo) {
case IP_CT_RELATED:
case IP_CT_RELATED+IP_CT_IS_REPLY:
- if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) {
+ if (ip_hdr(*pskb)->protocol == IPPROTO_ICMP) {
if (!ip_nat_icmp_reply_translation(ct, ctinfo,
hooknum, pskb))
return NF_DROP;
int (*okfn)(struct sk_buff *))
{
unsigned int ret;
- __be32 daddr = (*pskb)->nh.iph->daddr;
+ __be32 daddr = ip_hdr(*pskb)->daddr;
ret = ip_nat_fn(hooknum, pskb, in, out, okfn);
if (ret != NF_DROP && ret != NF_STOLEN
- && daddr != (*pskb)->nh.iph->daddr) {
+ && daddr != ip_hdr(*pskb)->daddr) {
dst_release((*pskb)->dst);
(*pskb)->dst = NULL;
}
struct xt_table_info *private;
/* Initialization */
- ip = (*pskb)->nh.iph;
+ ip = ip_hdr(*pskb);
datalen = (*pskb)->len - ip->ihl * 4;
indev = in ? in->name : nulldevname;
outdev = out ? out->name : nulldevname;
= 0x57acc001;
#endif
/* Target might have changed stuff. */
- ip = (*pskb)->nh.iph;
+ ip = ip_hdr(*pskb);
datalen = (*pskb)->len - ip->ihl * 4;
if (verdict == IPT_CONTINUE)
static inline u_int32_t
clusterip_hashfn(struct sk_buff *skb, struct clusterip_config *config)
{
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
unsigned long hashval;
u_int16_t sport, dport;
u_int16_t *ports;
/* special case: ICMP error handling. conntrack distinguishes between
* error messages (RELATED) and information requests (see below) */
- if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP
+ if (ip_hdr(*pskb)->protocol == IPPROTO_ICMP
&& (ctinfo == IP_CT_RELATED
|| ctinfo == IP_CT_RELATED+IP_CT_IS_REPLY))
return XT_CONTINUE;
static inline int
set_ect_ip(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
{
- struct iphdr *iph = (*pskb)->nh.iph;
+ struct iphdr *iph = ip_hdr(*pskb);
if ((iph->tos & IPT_ECN_IP_MASK) != (einfo->ip_ect & IPT_ECN_IP_MASK)) {
__u8 oldtos;
if (!skb_make_writable(pskb, sizeof(struct iphdr)))
return 0;
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
oldtos = iph->tos;
iph->tos &= ~IPT_ECN_IP_MASK;
iph->tos |= (einfo->ip_ect & IPT_ECN_IP_MASK);
if (!skb_make_writable(pskb, ip_hdrlen(*pskb) + sizeof(*tcph)))
return 0;
- tcph = (void *)(*pskb)->nh.iph + ip_hdrlen(*pskb);
+ tcph = (void *)ip_hdr(*pskb) + ip_hdrlen(*pskb);
oldval = ((__be16 *)tcph)[6];
if (einfo->operation & IPT_ECN_OP_SET_ECE)
return NF_DROP;
if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR)
- && (*pskb)->nh.iph->protocol == IPPROTO_TCP)
+ && ip_hdr(*pskb)->protocol == IPPROTO_TCP)
if (!set_ect_tcp(pskb, einfo))
return NF_DROP;
netmask = ~(mr->range[0].min_ip ^ mr->range[0].max_ip);
if (hooknum == NF_IP_PRE_ROUTING || hooknum == NF_IP_LOCAL_OUT)
- new_ip = (*pskb)->nh.iph->daddr & ~netmask;
+ new_ip = ip_hdr(*pskb)->daddr & ~netmask;
else
- new_ip = (*pskb)->nh.iph->saddr & ~netmask;
+ new_ip = ip_hdr(*pskb)->saddr & ~netmask;
new_ip |= mr->range[0].min_ip & netmask;
newrange = ((struct ip_nat_range)
static void send_reset(struct sk_buff *oldskb, int hook)
{
struct sk_buff *nskb;
+ struct iphdr *niph;
struct tcphdr _otcph, *oth, *tcph;
__be16 tmp_port;
__be32 tmp_addr;
unsigned int addr_type;
/* IP header checks: fragment. */
- if (oldskb->nh.iph->frag_off & htons(IP_OFFSET))
+ if (ip_hdr(oldskb)->frag_off & htons(IP_OFFSET))
return;
oth = skb_header_pointer(oldskb, ip_hdrlen(oldskb),
tcph = (struct tcphdr *)(skb_network_header(nskb) + ip_hdrlen(nskb));
/* Swap source and dest */
- tmp_addr = nskb->nh.iph->saddr;
- nskb->nh.iph->saddr = nskb->nh.iph->daddr;
- nskb->nh.iph->daddr = tmp_addr;
+ niph = ip_hdr(nskb);
+ tmp_addr = niph->saddr;
+ niph->saddr = niph->daddr;
+ niph->daddr = tmp_addr;
tmp_port = tcph->source;
tcph->source = tcph->dest;
tcph->dest = tmp_port;
/* Truncate to length (no data) */
tcph->doff = sizeof(struct tcphdr)/4;
skb_trim(nskb, ip_hdrlen(nskb) + sizeof(struct tcphdr));
- nskb->nh.iph->tot_len = htons(nskb->len);
+ niph->tot_len = htons(nskb->len);
if (tcph->ack) {
needs_ack = 0;
/* Adjust TCP checksum */
tcph->check = 0;
tcph->check = tcp_v4_check(sizeof(struct tcphdr),
- nskb->nh.iph->saddr,
- nskb->nh.iph->daddr,
+ niph->saddr, niph->daddr,
csum_partial((char *)tcph,
sizeof(struct tcphdr), 0));
/* Set DF, id = 0 */
- nskb->nh.iph->frag_off = htons(IP_DF);
- nskb->nh.iph->id = 0;
+ niph->frag_off = htons(IP_DF);
+ niph->id = 0;
addr_type = RTN_UNSPEC;
if (hook != NF_IP_FORWARD
nskb->ip_summed = CHECKSUM_NONE;
/* Adjust IP TTL */
- nskb->nh.iph->ttl = dst_metric(nskb->dst, RTAX_HOPLIMIT);
+ niph->ttl = dst_metric(nskb->dst, RTAX_HOPLIMIT);
/* Adjust IP checksum */
- nskb->nh.iph->check = 0;
- nskb->nh.iph->check = ip_fast_csum(skb_network_header(nskb),
- nskb->nh.iph->ihl);
+ niph->check = 0;
+ niph->check = ip_fast_csum(skb_network_header(nskb), niph->ihl);
/* "Never happens" */
if (nskb->len > dst_mtu(nskb->dst))
const void *targinfo)
{
const struct ipt_tos_target_info *tosinfo = targinfo;
- struct iphdr *iph = (*pskb)->nh.iph;
+ struct iphdr *iph = ip_hdr(*pskb);
if ((iph->tos & IPTOS_TOS_MASK) != tosinfo->tos) {
__u8 oldtos;
if (!skb_make_writable(pskb, sizeof(struct iphdr)))
return NF_DROP;
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
oldtos = iph->tos;
iph->tos = (iph->tos & IPTOS_PREC_MASK) | tosinfo->tos;
nf_csum_replace2(&iph->check, htons(oldtos), htons(iph->tos));
if (!skb_make_writable(pskb, (*pskb)->len))
return NF_DROP;
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
switch (info->mode) {
case IPT_TTL_SET:
int offset, unsigned int protoff, int *hotdrop)
{
const struct ipt_addrtype_info *info = matchinfo;
- const struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
int ret = 1;
if (info->source)
static inline int match_ip(const struct sk_buff *skb,
const struct ipt_ecn_info *einfo)
{
- return ((skb->nh.iph->tos&IPT_ECN_IP_MASK) == einfo->ip_ect);
+ return (ip_hdr(skb)->tos & IPT_ECN_IP_MASK) == einfo->ip_ect;
}
static inline int match_tcp(const struct sk_buff *skb,
return 0;
if (info->operation & (IPT_ECN_OP_MATCH_ECE|IPT_ECN_OP_MATCH_CWR)) {
- if (skb->nh.iph->protocol != IPPROTO_TCP)
+ if (ip_hdr(skb)->protocol != IPPROTO_TCP)
return 0;
if (!match_tcp(skb, info, hotdrop))
return 0;
int offset, unsigned int protoff, int *hotdrop)
{
const struct ipt_iprange_info *info = matchinfo;
- const struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
if (info->flags & IPRANGE_SRC) {
if (((ntohl(iph->saddr) < ntohl(info->src.min_ip))
int ret = info->invert;
if (info->side == IPT_RECENT_DEST)
- addr = skb->nh.iph->daddr;
+ addr = ip_hdr(skb)->daddr;
else
- addr = skb->nh.iph->saddr;
+ addr = ip_hdr(skb)->saddr;
- ttl = skb->nh.iph->ttl;
+ ttl = ip_hdr(skb)->ttl;
/* use TTL as seen before forwarding */
if (out && !skb->sk)
ttl++;
{
const struct ipt_tos_info *info = matchinfo;
- return (skb->nh.iph->tos == info->tos) ^ info->invert;
+ return (ip_hdr(skb)->tos == info->tos) ^ info->invert;
}
static struct xt_match tos_match = {
int offset, unsigned int protoff, int *hotdrop)
{
const struct ipt_ttl_info *info = matchinfo;
+ const u8 ttl = ip_hdr(skb)->ttl;
switch (info->mode) {
case IPT_TTL_EQ:
- return (skb->nh.iph->ttl == info->ttl);
+ return (ttl == info->ttl);
break;
case IPT_TTL_NE:
- return (!(skb->nh.iph->ttl == info->ttl));
+ return (!(ttl == info->ttl));
break;
case IPT_TTL_LT:
- return (skb->nh.iph->ttl < info->ttl);
+ return (ttl < info->ttl);
break;
case IPT_TTL_GT:
- return (skb->nh.iph->ttl > info->ttl);
+ return (ttl > info->ttl);
break;
default:
printk(KERN_WARNING "ipt_ttl: unknown mode %d\n",
int (*okfn)(struct sk_buff *))
{
unsigned int ret;
+ const struct iphdr *iph;
u_int8_t tos;
__be32 saddr, daddr;
u_int32_t mark;
/* Save things which could affect route */
mark = (*pskb)->mark;
- saddr = (*pskb)->nh.iph->saddr;
- daddr = (*pskb)->nh.iph->daddr;
- tos = (*pskb)->nh.iph->tos;
+ iph = ip_hdr(*pskb);
+ saddr = iph->saddr;
+ daddr = iph->daddr;
+ tos = iph->tos;
ret = ipt_do_table(pskb, hook, in, out, &packet_mangler);
/* Reroute for ANY change. */
- if (ret != NF_DROP && ret != NF_STOLEN && ret != NF_QUEUE
- && ((*pskb)->nh.iph->saddr != saddr
- || (*pskb)->nh.iph->daddr != daddr
- || (*pskb)->mark != mark
- || (*pskb)->nh.iph->tos != tos))
- if (ip_route_me_harder(pskb, RTN_UNSPEC))
- ret = NF_DROP;
+ if (ret != NF_DROP && ret != NF_STOLEN && ret != NF_QUEUE) {
+ iph = ip_hdr(*pskb);
+
+ if (iph->saddr != saddr ||
+ iph->daddr != daddr ||
+ (*pskb)->mark != mark ||
+ iph->tos != tos)
+ if (ip_route_me_harder(pskb, RTN_UNSPEC))
+ ret = NF_DROP;
+ }
return ret;
}
local_bh_enable();
if (skb)
- ip_send_check(skb->nh.iph);
+ ip_send_check(ip_hdr(skb));
return skb;
}
u_int8_t *protonum)
{
/* Never happen */
- if ((*pskb)->nh.iph->frag_off & htons(IP_OFFSET)) {
+ if (ip_hdr(*pskb)->frag_off & htons(IP_OFFSET)) {
if (net_ratelimit()) {
printk(KERN_ERR "ipv4_prepare: Frag of proto %u (hook=%u)\n",
- (*pskb)->nh.iph->protocol, hooknum);
+ ip_hdr(*pskb)->protocol, hooknum);
}
return -NF_DROP;
}
*dataoff = skb_network_offset(*pskb) + ip_hdrlen(*pskb);
- *protonum = (*pskb)->nh.iph->protocol;
+ *protonum = ip_hdr(*pskb)->protocol;
return NF_ACCEPT;
}
#endif
/* Gather fragments. */
- if ((*pskb)->nh.iph->frag_off & htons(IP_MF|IP_OFFSET)) {
+ if (ip_hdr(*pskb)->frag_off & htons(IP_MF | IP_OFFSET)) {
*pskb = nf_ct_ipv4_gather_frags(*pskb,
hooknum == NF_IP_PRE_ROUTING ?
IP_DEFRAG_CONNTRACK_IN :
buf.port = port;
addroff += dataoff;
- if ((*pskb)->nh.iph->protocol == IPPROTO_TCP) {
+ if (ip_hdr(*pskb)->protocol == IPPROTO_TCP) {
if (!nf_nat_mangle_tcp_packet(pskb, ct, ctinfo,
addroff, sizeof(buf),
(char *) &buf, sizeof(buf))) {
unsigned char *data;
BUG_ON(skb_is_nonlinear(skb));
- data = (unsigned char *)skb->nh.iph + dataoff;
+ data = skb_network_header(skb) + dataoff;
/* move post-replacement */
memmove(data + match_offset + rep_len,
}
/* fix IP hdr checksum information */
- skb->nh.iph->tot_len = htons(skb->len);
- ip_send_check(skb->nh.iph);
+ ip_hdr(skb)->tot_len = htons(skb->len);
+ ip_send_check(ip_hdr(skb));
}
/* Unusual, but possible case. */
SKB_LINEAR_ASSERT(*pskb);
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
tcph = (void *)iph + iph->ihl*4;
oldlen = (*pskb)->len - iph->ihl*4;
int datalen, oldlen;
/* UDP helpers might accidentally mangle the wrong packet */
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
if ((*pskb)->len < iph->ihl*4 + sizeof(*udph) +
match_offset + match_len)
return 0;
!enlarge_skb(pskb, rep_len - match_len))
return 0;
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
udph = (void *)iph + iph->ihl*4;
oldlen = (*pskb)->len - iph->ihl*4;
if (hooknum == NF_IP_LOCAL_OUT &&
mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)
- warn_if_extra_mangle((*pskb)->nh.iph->daddr,
+ warn_if_extra_mangle(ip_hdr(*pskb)->daddr,
mr->range[0].min_ip);
return nf_nat_setup_info(ct, &mr->range[0], hooknum);
enum ip_conntrack_info ctinfo,
struct sk_buff **pskb)
{
- struct iphdr *iph = (*pskb)->nh.iph;
+ struct iphdr *iph = ip_hdr(*pskb);
struct udphdr *udph = (struct udphdr *)((__be32 *)iph + iph->ihl);
u_int16_t udplen = ntohs(udph->len);
u_int16_t paylen = udplen - sizeof(struct udphdr);
{
int dir = CTINFO2DIR(ctinfo);
unsigned int ret;
- struct iphdr *iph = (*pskb)->nh.iph;
+ struct iphdr *iph = ip_hdr(*pskb);
struct udphdr *udph = (struct udphdr *)((u_int32_t *)iph + iph->ihl);
/* SNMP replies and originating SNMP traps get mangled */
/* We never see fragments: conntrack defrags on pre-routing
and local-out, and nf_nat_out protects post-routing. */
- NF_CT_ASSERT(!((*pskb)->nh.iph->frag_off
- & htons(IP_MF|IP_OFFSET)));
+ NF_CT_ASSERT(!(ip_hdr(*pskb)->frag_off & htons(IP_MF | IP_OFFSET)));
ct = nf_ct_get(*pskb, &ctinfo);
/* Can't track? It's not due to stress, or conntrack would
/* Exception: ICMP redirect to new connection (not in
hash table yet). We must not let this through, in
case we're doing NAT to the same network. */
- if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) {
+ if (ip_hdr(*pskb)->protocol == IPPROTO_ICMP) {
struct icmphdr _hdr, *hp;
hp = skb_header_pointer(*pskb, ip_hdrlen(*pskb),
switch (ctinfo) {
case IP_CT_RELATED:
case IP_CT_RELATED+IP_CT_IS_REPLY:
- if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) {
+ if (ip_hdr(*pskb)->protocol == IPPROTO_ICMP) {
if (!nf_nat_icmp_reply_translation(ct, ctinfo,
hooknum, pskb))
return NF_DROP;
int (*okfn)(struct sk_buff *))
{
unsigned int ret;
- __be32 daddr = (*pskb)->nh.iph->daddr;
+ __be32 daddr = ip_hdr(*pskb)->daddr;
ret = nf_nat_fn(hooknum, pskb, in, out, okfn);
if (ret != NF_DROP && ret != NF_STOLEN &&
- daddr != (*pskb)->nh.iph->daddr) {
+ daddr != ip_hdr(*pskb)->daddr) {
dst_release((*pskb)->dst);
(*pskb)->dst = NULL;
}
skb->dst = dst_clone(&rt->u.dst);
skb_reset_network_header(skb);
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
skb_put(skb, length);
skb->ip_summed = CHECKSUM_NONE;
/* Copy the address. */
if (sin) {
sin->sin_family = AF_INET;
- sin->sin_addr.s_addr = skb->nh.iph->saddr;
+ sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
sin->sin_port = 0;
memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
}
static int ip_rt_bug(struct sk_buff *skb)
{
printk(KERN_DEBUG "ip_rt_bug: %u.%u.%u.%u -> %u.%u.%u.%u, %s\n",
- NIPQUAD(skb->nh.iph->saddr), NIPQUAD(skb->nh.iph->daddr),
+ NIPQUAD(ip_hdr(skb)->saddr), NIPQUAD(ip_hdr(skb)->daddr),
skb->dev ? skb->dev->name : "?");
kfree_skb(skb);
return 0;
rcu_read_lock();
if ((in_dev = __in_dev_get_rcu(dev)) != NULL) {
int our = ip_check_mc(in_dev, daddr, saddr,
- skb->nh.iph->protocol);
+ ip_hdr(skb)->protocol);
if (our
#ifdef CONFIG_IP_MROUTE
|| (!LOCAL_MCAST(daddr) && IN_DEV_MFORWARD(in_dev))
skb_reset_network_header(skb);
/* Bugfix: need to give ip_route_input enough of an IP header to not gag. */
- skb->nh.iph->protocol = IPPROTO_ICMP;
+ ip_hdr(skb)->protocol = IPPROTO_ICMP;
skb_reserve(skb, MAX_HEADER + sizeof(struct iphdr));
src = tb[RTA_SRC] ? nla_get_be32(tb[RTA_SRC]) : 0;
NET_INC_STATS_BH(LINUX_MIB_SYNCOOKIESSENT);
- return secure_tcp_syn_cookie(skb->nh.iph->saddr, skb->nh.iph->daddr,
+ return secure_tcp_syn_cookie(ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
skb->h.th->source, skb->h.th->dest,
ntohl(skb->h.th->seq),
jiffies / (HZ * 60), mssind);
seq = ntohl(skb->h.th->seq)-1;
mssind = check_tcp_syn_cookie(cookie,
- skb->nh.iph->saddr, skb->nh.iph->daddr,
+ ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
skb->h.th->source, skb->h.th->dest,
seq, jiffies / (HZ * 60), COUNTER_TRIES);
treq->snt_isn = cookie;
req->mss = mss;
ireq->rmt_port = skb->h.th->source;
- ireq->loc_addr = skb->nh.iph->daddr;
- ireq->rmt_addr = skb->nh.iph->saddr;
+ ireq->loc_addr = ip_hdr(skb)->daddr;
+ ireq->rmt_addr = ip_hdr(skb)->saddr;
ireq->opt = NULL;
/* We throwed the options of the initial SYN away, so we hope
static inline __u32 tcp_v4_init_sequence(struct sk_buff *skb)
{
- return secure_tcp_sequence_number(skb->nh.iph->daddr,
- skb->nh.iph->saddr,
+ return secure_tcp_sequence_number(ip_hdr(skb)->daddr,
+ ip_hdr(skb)->saddr,
skb->h.th->dest,
skb->h.th->source);
}
int tcp_v4_gso_send_check(struct sk_buff *skb)
{
- struct iphdr *iph;
+ const struct iphdr *iph;
struct tcphdr *th;
if (!pskb_may_pull(skb, sizeof(*th)))
return -EINVAL;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
th = skb->h.th;
th->check = 0;
arg.iov[0].iov_len = sizeof(rep.th);
#ifdef CONFIG_TCP_MD5SIG
- key = sk ? tcp_v4_md5_do_lookup(sk, skb->nh.iph->daddr) : NULL;
+ key = sk ? tcp_v4_md5_do_lookup(sk, ip_hdr(skb)->daddr) : NULL;
if (key) {
rep.opt[0] = htonl((TCPOPT_NOP << 24) |
(TCPOPT_NOP << 16) |
tcp_v4_do_calc_md5_hash((__u8 *)&rep.opt[1],
key,
- skb->nh.iph->daddr,
- skb->nh.iph->saddr,
+ ip_hdr(skb)->daddr,
+ ip_hdr(skb)->saddr,
&rep.th, IPPROTO_TCP,
arg.iov[0].iov_len);
}
#endif
- arg.csum = csum_tcpudp_nofold(skb->nh.iph->daddr,
- skb->nh.iph->saddr, /* XXX */
+ arg.csum = csum_tcpudp_nofold(ip_hdr(skb)->daddr,
+ ip_hdr(skb)->saddr, /* XXX */
sizeof(struct tcphdr), IPPROTO_TCP, 0);
arg.csumoffset = offsetof(struct tcphdr, check) / 2;
* skb->sk) holds true, but we program defensively.
*/
if (!twsk && skb->sk) {
- key = tcp_v4_md5_do_lookup(skb->sk, skb->nh.iph->daddr);
+ key = tcp_v4_md5_do_lookup(skb->sk, ip_hdr(skb)->daddr);
} else if (twsk && twsk->tw_md5_keylen) {
tw_key.key = twsk->tw_md5_key;
tw_key.keylen = twsk->tw_md5_keylen;
tcp_v4_do_calc_md5_hash((__u8 *)&rep.opt[offset],
key,
- skb->nh.iph->daddr,
- skb->nh.iph->saddr,
+ ip_hdr(skb)->daddr,
+ ip_hdr(skb)->saddr,
&rep.th, IPPROTO_TCP,
arg.iov[0].iov_len);
}
#endif
- arg.csum = csum_tcpudp_nofold(skb->nh.iph->daddr,
- skb->nh.iph->saddr, /* XXX */
+ arg.csum = csum_tcpudp_nofold(ip_hdr(skb)->daddr,
+ ip_hdr(skb)->saddr, /* XXX */
arg.iov[0].iov_len, IPPROTO_TCP, 0);
arg.csumoffset = offsetof(struct tcphdr, check) / 2;
*/
__u8 *hash_location = NULL;
struct tcp_md5sig_key *hash_expected;
- struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
struct tcphdr *th = skb->h.th;
int length = (th->doff << 2) - sizeof(struct tcphdr);
int genhash;
struct inet_request_sock *ireq;
struct tcp_options_received tmp_opt;
struct request_sock *req;
- __be32 saddr = skb->nh.iph->saddr;
- __be32 daddr = skb->nh.iph->daddr;
+ __be32 saddr = ip_hdr(skb)->saddr;
+ __be32 daddr = ip_hdr(skb)->daddr;
__u32 isn = TCP_SKB_CB(skb)->when;
struct dst_entry *dst = NULL;
#ifdef CONFIG_SYN_COOKIES
newinet->opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
- newinet->mc_ttl = skb->nh.iph->ttl;
+ newinet->mc_ttl = ip_hdr(skb)->ttl;
inet_csk(newsk)->icsk_ext_hdr_len = 0;
if (newinet->opt)
inet_csk(newsk)->icsk_ext_hdr_len = newinet->opt->optlen;
static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
{
struct tcphdr *th = skb->h.th;
- struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
struct sock *nsk;
struct request_sock **prev;
/* Find possible connection requests. */
if (req)
return tcp_check_req(sk, skb, req, prev);
- nsk = inet_lookup_established(&tcp_hashinfo, skb->nh.iph->saddr,
- th->source, skb->nh.iph->daddr,
- th->dest, inet_iif(skb));
+ nsk = inet_lookup_established(&tcp_hashinfo, iph->saddr, th->source,
+ iph->daddr, th->dest, inet_iif(skb));
if (nsk) {
if (nsk->sk_state != TCP_TIME_WAIT) {
static __sum16 tcp_v4_checksum_init(struct sk_buff *skb)
{
+ const struct iphdr *iph = ip_hdr(skb);
+
if (skb->ip_summed == CHECKSUM_COMPLETE) {
- if (!tcp_v4_check(skb->len, skb->nh.iph->saddr,
- skb->nh.iph->daddr, skb->csum)) {
+ if (!tcp_v4_check(skb->len, iph->saddr,
+ iph->daddr, skb->csum)) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
return 0;
}
}
- skb->csum = csum_tcpudp_nofold(skb->nh.iph->saddr, skb->nh.iph->daddr,
+ skb->csum = csum_tcpudp_nofold(iph->saddr, iph->daddr,
skb->len, IPPROTO_TCP, 0);
if (skb->len <= 76) {
int tcp_v4_rcv(struct sk_buff *skb)
{
+ const struct iphdr *iph;
struct tcphdr *th;
struct sock *sk;
int ret;
goto bad_packet;
th = skb->h.th;
+ iph = ip_hdr(skb);
TCP_SKB_CB(skb)->seq = ntohl(th->seq);
TCP_SKB_CB(skb)->end_seq = (TCP_SKB_CB(skb)->seq + th->syn + th->fin +
skb->len - th->doff * 4);
TCP_SKB_CB(skb)->ack_seq = ntohl(th->ack_seq);
TCP_SKB_CB(skb)->when = 0;
- TCP_SKB_CB(skb)->flags = skb->nh.iph->tos;
+ TCP_SKB_CB(skb)->flags = iph->tos;
TCP_SKB_CB(skb)->sacked = 0;
- sk = __inet_lookup(&tcp_hashinfo, skb->nh.iph->saddr, th->source,
- skb->nh.iph->daddr, th->dest,
- inet_iif(skb));
-
+ sk = __inet_lookup(&tcp_hashinfo, iph->saddr, th->source,
+ iph->daddr, th->dest, inet_iif(skb));
if (!sk)
goto no_tcp_socket;
switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {
case TCP_TW_SYN: {
struct sock *sk2 = inet_lookup_listener(&tcp_hashinfo,
- skb->nh.iph->daddr,
- th->dest,
+ iph->daddr, th->dest,
inet_iif(skb));
if (sk2) {
inet_twsk_deschedule(inet_twsk(sk), &tcp_death_row);
{
sin->sin_family = AF_INET;
sin->sin_port = skb->h.uh->source;
- sin->sin_addr.s_addr = skb->nh.iph->saddr;
+ sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
}
if (inet->cmsg_flags)
return 0;
/* Now we can update and verify the packet length... */
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
iphlen = iph->ihl << 2;
iph->tot_len = htons(ntohs(iph->tot_len) - len);
if (skb->len < iphlen + len) {
static inline int udp4_csum_init(struct sk_buff *skb, struct udphdr *uh,
int proto)
{
+ const struct iphdr *iph;
int err;
UDP_SKB_CB(skb)->partial_cov = 0;
return err;
}
+ iph = ip_hdr(skb);
if (uh->check == 0) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else if (skb->ip_summed == CHECKSUM_COMPLETE) {
- if (!csum_tcpudp_magic(skb->nh.iph->saddr, skb->nh.iph->daddr,
- skb->len, proto, skb->csum))
+ if (!csum_tcpudp_magic(iph->saddr, iph->daddr, skb->len,
+ proto, skb->csum))
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
if (skb->ip_summed != CHECKSUM_UNNECESSARY)
- skb->csum = csum_tcpudp_nofold(skb->nh.iph->saddr,
- skb->nh.iph->daddr,
+ skb->csum = csum_tcpudp_nofold(iph->saddr, iph->daddr,
skb->len, proto, 0);
/* Probably, we should checksum udp header (it should be in cache
* in any case) and data in tiny packets (< rx copybreak).
struct udphdr *uh = skb->h.uh;
unsigned short ulen;
struct rtable *rt = (struct rtable*)skb->dst;
- __be32 saddr = skb->nh.iph->saddr;
- __be32 daddr = skb->nh.iph->daddr;
+ __be32 saddr = ip_hdr(skb)->saddr;
+ __be32 daddr = ip_hdr(skb)->daddr;
/*
* Validate the packet.
switch (nexthdr) {
case IPPROTO_IPIP:
case IPPROTO_IPV6:
- *spi = skb->nh.iph->saddr;
+ *spi = ip_hdr(skb)->saddr;
*seq = 0;
return 0;
}
#ifdef CONFIG_NETFILTER
static inline int xfrm4_rcv_encap_finish(struct sk_buff *skb)
{
- struct iphdr *iph = skb->nh.iph;
-
if (skb->dst == NULL) {
+ const struct iphdr *iph = ip_hdr(skb);
+
if (ip_route_input(skb, iph->daddr, iph->saddr, iph->tos,
skb->dev))
goto drop;
int xfrm4_rcv_encap(struct sk_buff *skb, __u16 encap_type)
{
- int err;
__be32 spi, seq;
struct xfrm_state *xfrm_vec[XFRM_MAX_DEPTH];
struct xfrm_state *x;
int xfrm_nr = 0;
int decaps = 0;
+ int err = xfrm4_parse_spi(skb, ip_hdr(skb)->protocol, &spi, &seq);
- if ((err = xfrm4_parse_spi(skb, skb->nh.iph->protocol, &spi, &seq)) != 0)
+ if (err != 0)
goto drop;
do {
- struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
if (xfrm_nr == XFRM_MAX_DEPTH)
goto drop;
break;
}
- if ((err = xfrm_parse_spi(skb, skb->nh.iph->protocol, &spi, &seq)) < 0)
+ err = xfrm_parse_spi(skb, ip_hdr(skb)->protocol, &spi, &seq);
+ if (err < 0)
goto drop;
} while (!err);
} else {
#ifdef CONFIG_NETFILTER
__skb_push(skb, skb->data - skb_network_header(skb));
- skb->nh.iph->tot_len = htons(skb->len);
- ip_send_check(skb->nh.iph);
+ ip_hdr(skb)->tot_len = htons(skb->len);
+ ip_send_check(ip_hdr(skb));
NF_HOOK(PF_INET, NF_IP_PRE_ROUTING, skb, skb->dev, NULL,
xfrm4_rcv_encap_finish);
return 0;
#else
- return -skb->nh.iph->protocol;
+ return -ip_hdr(skb)->protocol;
#endif
}
struct iphdr *iph, *top_iph = NULL;
int hdrlen, optlen;
- iph = skb->nh.iph;
- skb->h.ipiph = iph;
+ iph = ip_hdr(skb);
+ skb->h.raw = skb->nh.raw;
hdrlen = 0;
optlen = iph->ihl * 4 - sizeof(*iph);
skb_push(skb, x->props.header_len + hdrlen);
skb_reset_network_header(skb);
- top_iph = skb->nh.iph;
+ top_iph = ip_hdr(skb);
skb->h.raw += sizeof(*iph) - hdrlen;
memmove(top_iph, iph, sizeof(*iph));
static int xfrm4_beet_input(struct xfrm_state *x, struct sk_buff *skb)
{
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
int phlen = 0;
int optlen = 0;
__u8 ph_nexthdr = 0, protocol = 0;
skb->h.raw = skb->data + (phlen + optlen);
skb->data = skb->h.raw;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
iph->ihl = (sizeof(*iph) + optlen) / 4;
iph->tot_len = htons(skb->len + iph->ihl * 4);
iph->daddr = x->sel.daddr.a4;
*/
static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb)
{
- struct iphdr *iph;
- int ihl;
+ struct iphdr *iph = ip_hdr(skb);
+ int ihl = iph->ihl * 4;
- iph = skb->nh.iph;
- skb->h.ipiph = iph;
-
- ihl = iph->ihl * 4;
+ skb->h.raw = skb->nh.raw;
skb->h.raw += ihl;
skb_push(skb, x->props.header_len);
memmove(skb->h.raw, skb_network_header(skb), ihl);
skb->nh.raw = skb->h.raw;
}
- skb->nh.iph->tot_len = htons(skb->len + ihl);
+ ip_hdr(skb)->tot_len = htons(skb->len + ihl);
skb->h.raw = skb->data;
return 0;
}
static inline void ipip_ecn_decapsulate(struct sk_buff *skb)
{
- struct iphdr *outer_iph = skb->nh.iph;
+ struct iphdr *outer_iph = ip_hdr(skb);
struct iphdr *inner_iph = skb->h.ipiph;
if (INET_ECN_is_ce(outer_iph->tos))
struct iphdr *iph, *top_iph;
int flags;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
skb->h.ipiph = iph;
skb_push(skb, x->props.header_len);
skb_reset_network_header(skb);
- top_iph = skb->nh.iph;
+ top_iph = ip_hdr(skb);
top_iph->ihl = 5;
top_iph->version = 4;
static int xfrm4_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
{
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
const unsigned char *old_mac;
int err = -EINVAL;
(err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
goto out;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
if (iph->protocol == IPPROTO_IPIP) {
if (x->props.flags & XFRM_STATE_DECAP_DSCP)
ipv4_copy_dscp(iph, skb->h.ipiph);
{
int mtu, ret = 0;
struct dst_entry *dst;
- struct iphdr *iph = skb->nh.iph;
if (IPCB(skb)->flags & IPSKB_XFRM_TUNNEL_SIZE)
goto out;
IPCB(skb)->flags |= IPSKB_XFRM_TUNNEL_SIZE;
- if (!(iph->frag_off & htons(IP_DF)) || skb->local_df)
+ if (!(ip_hdr(skb)->frag_off & htons(IP_DF)) || skb->local_df)
goto out;
dst = skb->dst;
static void
_decode_session4(struct sk_buff *skb, struct flowi *fl)
{
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
u8 *xprth = skb_network_header(skb) + iph->ihl * 4;
memset(fl, 0, sizeof(struct flowi));
static int ipip_output(struct xfrm_state *x, struct sk_buff *skb)
{
- struct iphdr *iph;
+ struct iphdr *iph = ip_hdr(skb);
- iph = skb->nh.iph;
iph->tot_len = htons(skb->len);
ip_send_check(iph);
struct inet_sock *inet = inet_sk(sk);
ipv6_addr_set(&sin->sin6_addr, 0, 0,
- htonl(0xffff),
- skb->nh.iph->saddr);
+ htonl(0xffff), ip_hdr(skb)->saddr);
if (inet->cmsg_flags)
ip_cmsg_recv(msg, skb);
}
skb2->dst = NULL;
skb_pull(skb2, offset);
skb_reset_network_header(skb2);
- eiph = skb2->nh.iph;
+ eiph = ip_hdr(skb2);
/* Try to guess incoming interface */
memset(&fl, 0, sizeof(fl));
__u8 dsfield = ipv6_get_dsfield(ipv6h) & ~INET_ECN_MASK;
if (t->parms.flags & IP6_TNL_F_RCV_DSCP_COPY)
- ipv4_change_dsfield(skb->nh.iph, INET_ECN_MASK, dsfield);
+ ipv4_change_dsfield(ip_hdr(skb), INET_ECN_MASK, dsfield);
if (INET_ECN_is_ce(dsfield))
- IP_ECN_set_ce(skb->nh.iph);
+ IP_ECN_set_ce(ip_hdr(skb));
}
static void ip6ip6_dscp_ecn_decapsulate(struct ip6_tnl *t,
ip4ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ip6_tnl *t = netdev_priv(dev);
- struct iphdr *iph = skb->nh.iph;
+ struct iphdr *iph = ip_hdr(skb);
int encap_limit = -1;
struct flowi fl;
__u8 dsfield;
if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
goto out;
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
read_lock(&ipip6_lock);
if ((tunnel = ipip6_tunnel_lookup(iph->saddr, iph->daddr)) != NULL) {
* Push down and install the IPIP header.
*/
- iph = skb->nh.iph;
+ iph = ip_hdr(skb);
iph->version = 4;
iph->ihl = sizeof(struct iphdr)>>2;
if (mtu > IPV6_MIN_MTU)
if (skb->protocol == htons(ETH_P_IP))
ipv6_addr_set(&sin6->sin6_addr, 0, 0,
- htonl(0xffff), skb->nh.iph->saddr);
+ htonl(0xffff), ip_hdr(skb)->saddr);
else {
ipv6_addr_copy(&sin6->sin6_addr, &skb->nh.ipv6h->saddr);
if (ipv6_addr_type(&sin6->sin6_addr) & IPV6_ADDR_LINKLOCAL)
struct nf_conn *ct, enum ip_conntrack_info ctinfo)
{
struct nf_conntrack_expect *exp;
- struct iphdr *iph = (*pskb)->nh.iph;
+ struct iphdr *iph = ip_hdr(*pskb);
struct rtable *rt = (struct rtable *)(*pskb)->dst;
struct in_device *in_dev;
__be32 mask = 0;
const void *targinfo)
{
const struct xt_DSCP_info *dinfo = targinfo;
- u_int8_t dscp = ipv4_get_dsfield((*pskb)->nh.iph) >> XT_DSCP_SHIFT;
+ u_int8_t dscp = ipv4_get_dsfield(ip_hdr(*pskb)) >> XT_DSCP_SHIFT;
if (dscp != dinfo->dscp) {
if (!skb_make_writable(pskb, sizeof(struct iphdr)))
return NF_DROP;
- ipv4_change_dsfield((*pskb)->nh.iph, (__u8)(~XT_DSCP_MASK),
+ ipv4_change_dsfield(ip_hdr(*pskb), (__u8)(~XT_DSCP_MASK),
dinfo->dscp << XT_DSCP_SHIFT);
}
const struct xt_target *target,
const void *targinfo)
{
- struct iphdr *iph = (*pskb)->nh.iph;
+ struct iphdr *iph = ip_hdr(*pskb);
__be16 newlen;
int ret;
if (ret < 0)
return NF_DROP;
if (ret > 0) {
- iph = (*pskb)->nh.iph;
+ iph = ip_hdr(*pskb);
newlen = htons(ntohs(iph->tot_len) + ret);
nf_csum_replace2(&iph->check, iph->tot_len, newlen);
iph->tot_len = newlen;
int *hotdrop)
{
const struct xt_dscp_info *info = matchinfo;
- u_int8_t dscp = ipv4_get_dsfield(skb->nh.iph) >> XT_DSCP_SHIFT;
+ u_int8_t dscp = ipv4_get_dsfield(ip_hdr(skb)) >> XT_DSCP_SHIFT;
return (dscp == info->dscp) ^ !!info->invert;
}
switch (hinfo->family) {
case AF_INET:
if (hinfo->cfg.mode & XT_HASHLIMIT_HASH_DIP)
- dst->addr.ip.dst = skb->nh.iph->daddr;
+ dst->addr.ip.dst = ip_hdr(skb)->daddr;
if (hinfo->cfg.mode & XT_HASHLIMIT_HASH_SIP)
- dst->addr.ip.src = skb->nh.iph->saddr;
+ dst->addr.ip.src = ip_hdr(skb)->saddr;
if (!(hinfo->cfg.mode &
(XT_HASHLIMIT_HASH_DPT | XT_HASHLIMIT_HASH_SPT)))
return 0;
- nexthdr = skb->nh.iph->protocol;
+ nexthdr = ip_hdr(skb)->protocol;
break;
#if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE)
case AF_INET6:
int *hotdrop)
{
const struct xt_length_info *info = matchinfo;
- u_int16_t pktlen = ntohs(skb->nh.iph->tot_len);
+ u_int16_t pktlen = ntohs(ip_hdr(skb)->tot_len);
return (pktlen >= info->min && pktlen <= info->max) ^ info->invert;
}
const struct xt_pkttype_info *info = matchinfo;
if (skb->pkt_type == PACKET_LOOPBACK)
- type = (MULTICAST(skb->nh.iph->daddr)
+ type = (MULTICAST(ip_hdr(skb)->daddr)
? PACKET_MULTICAST
: PACKET_BROADCAST);
else
/* fill in the specifics */
candidate->addr.sin_family = AF_INET;
candidate->addr.sin_port = x_port;
- candidate->addr.sin_addr.s_addr = pkt->nh.iph->saddr;
+ candidate->addr.sin_addr.s_addr = ip_hdr(pkt)->saddr;
candidate->in_epoch = x_epoch;
candidate->out_epoch = x_epoch;
candidate->in_clientflag = RXRPC_CLIENT_INITIATED;
return;
}
- addr = pkt->nh.iph->saddr;
+ addr = ip_hdr(pkt)->saddr;
port = pkt->h.uh->source;
_net("Rx Received UDP packet from %08x:%04hu",
memset(&sin,0,sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_port = msg->pkt->h.uh->source;
- sin.sin_addr.s_addr = msg->pkt->nh.iph->saddr;
+ sin.sin_addr.s_addr = ip_hdr(msg->pkt)->saddr;
msghdr.msg_name = &sin;
msghdr.msg_namelen = sizeof(sin);
#if RSVP_DST_LEN == 4
struct ipv6hdr *nhptr = skb->nh.ipv6h;
#else
- struct iphdr *nhptr = skb->nh.iph;
+ struct iphdr *nhptr = ip_hdr(skb);
#endif
restart:
}
D2PRINTK("atm_tc_dequeue: sending on class %p\n",flow);
/* remove any LL header somebody else has attached */
- skb_pull(skb,(char *) skb->nh.iph-(char *) skb->data);
+ skb_pull(skb, skb_network_offset(skb));
if (skb_headroom(skb) < flow->hdr_len) {
struct sk_buff *new;
skb = new;
}
D2PRINTK("sch_atm_dequeue: ip %p, data %p\n",
- skb->nh.iph,skb->data);
+ skb_network_header(skb), skb->data);
ATM_SKB(skb)->vcc = flow->vcc;
memcpy(skb_push(skb,flow->hdr_len),flow->hdr,
flow->hdr_len);
/* FIXME: Safe with non-linear skbs? --RR */
switch (skb->protocol) {
case __constant_htons(ETH_P_IP):
- skb->tc_index = ipv4_get_dsfield(skb->nh.iph)
+ skb->tc_index = ipv4_get_dsfield(ip_hdr(skb))
& ~INET_ECN_MASK;
break;
case __constant_htons(ETH_P_IPV6):
switch (skb->protocol) {
case __constant_htons(ETH_P_IP):
- ipv4_change_dsfield(skb->nh.iph, p->mask[index],
+ ipv4_change_dsfield(ip_hdr(skb), p->mask[index],
p->value[index]);
break;
case __constant_htons(ETH_P_IPV6):
switch (skb->protocol) {
case __constant_htons(ETH_P_IP):
{
- struct iphdr *iph = skb->nh.iph;
+ const struct iphdr *iph = ip_hdr(skb);
h = iph->daddr;
h2 = iph->saddr^iph->protocol;
if (!(iph->frag_off&htons(IP_MF|IP_OFFSET)) &&
if (skb->len < sizeof(struct sctp_chunkhdr))
goto discard_it;
- family = ipver2af(skb->nh.iph->version);
+ family = ipver2af(ip_hdr(skb)->version);
af = sctp_get_af_specific(family);
if (unlikely(!af))
goto discard_it;
/* Map ipv4 address into v4-mapped-on-v6 address. */
if (sctp_sk(skb->sk)->v4mapped &&
- skb->nh.iph->version == 4) {
+ ip_hdr(skb)->version == 4) {
sctp_v4_map_v6((union sctp_addr *)sin6);
- sin6->sin6_addr.s6_addr32[3] = skb->nh.iph->saddr;
+ sin6->sin6_addr.s6_addr32[3] = ip_hdr(skb)->saddr;
return;
}
sh = (struct sctphdr *) skb->h.raw;
if (is_saddr) {
*port = sh->source;
- from = &skb->nh.iph->saddr;
+ from = &ip_hdr(skb)->saddr;
} else {
*port = sh->dest;
- from = &skb->nh.iph->daddr;
+ from = &ip_hdr(skb)->daddr;
}
memcpy(&addr->v4.sin_addr.s_addr, from, sizeof(struct in_addr));
}
/* Was this packet marked by Explicit Congestion Notification? */
static int sctp_v4_is_ce(const struct sk_buff *skb)
{
- return INET_ECN_is_ce(skb->nh.iph->tos);
+ return INET_ECN_is_ce(ip_hdr(skb)->tos);
}
/* Create and initialize a new sk for the socket returned by accept(). */
sin = (struct sockaddr_in *)msgname;
sh = (struct sctphdr *)skb->h.raw;
sin->sin_port = sh->source;
- sin->sin_addr.s_addr = skb->nh.iph->saddr;
+ sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
}
}
struct sctp_af *af;
int iif = 0;
- af = sctp_get_af_specific(ipver2af(chunk->skb->nh.iph->version));
+ af = sctp_get_af_specific(ipver2af(ip_hdr(chunk->skb)->version));
if (af)
iif = af->skb_iif(chunk->skb);
asoc->temp = 1;
skb = chunk->skb;
/* Create an entry for the source address of the packet. */
- af = sctp_get_af_specific(ipver2af(skb->nh.iph->version));
+ af = sctp_get_af_specific(ipver2af(ip_hdr(skb)->version));
if (unlikely(!af))
goto fail;
af->from_skb(&asoc->c.peer_addr, skb, 1);
chunk->ecn_ce_done = 1;
af = sctp_get_af_specific(
- ipver2af(chunk->skb->nh.iph->version));
+ ipver2af(ip_hdr(chunk->skb)->version));
if (af && af->is_ce(chunk->skb) && asoc->peer.ecn_capable) {
/* Do real work as sideffect. */
projects / linux-2.6 / commitdiff