diff options
Diffstat (limited to 'net')
39 files changed, 115 insertions, 122 deletions
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index 268a6c7347f2..af120b2d5331 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -483,7 +483,7 @@ static void ip_frag_queue(struct ipq *qp, struct sk_buff *skb) flags = offset & ~IP_OFFSET; offset &= IP_OFFSET; offset <<= 3; /* offset is in 8-byte chunks */ - ihl = skb->nh.iph->ihl * 4; + ihl = ip_hdrlen(skb); /* Determine the position of this fragment. */ end = offset + skb->len - ihl; @@ -624,7 +624,7 @@ static struct sk_buff *ip_frag_reasm(struct ipq *qp, struct net_device *dev) BUG_TRAP(FRAG_CB(head)->offset == 0); /* Allocate a new buffer for the datagram. */ - ihlen = head->nh.iph->ihl*4; + ihlen = ip_hdrlen(head); len = ihlen + qp->len; if (len > 65535) diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c index f38e97647ac0..2ee132b330fd 100644 --- a/net/ipv4/ip_input.c +++ b/net/ipv4/ip_input.c @@ -198,9 +198,7 @@ int ip_call_ra_chain(struct sk_buff *skb) static inline int ip_local_deliver_finish(struct sk_buff *skb) { - int ihl = skb->nh.iph->ihl*4; - - __skb_pull(skb, ihl); + __skb_pull(skb, ip_hdrlen(skb)); /* Point into the IP datagram, just past the header. */ skb->h.raw = skb->data; diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index aba3ff0bec97..54b7543190f1 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -539,7 +539,7 @@ static void ipmr_cache_resolve(struct mfc_cache *uc, struct mfc_cache *c) static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert) { struct sk_buff *skb; - int ihl = pkt->nh.iph->ihl<<2; + const int ihl = ip_hdrlen(pkt); struct igmphdr *igmp; struct igmpmsg *msg; int ret; diff --git a/net/ipv4/ipvs/ip_vs_app.c b/net/ipv4/ipvs/ip_vs_app.c index f29d3a27eec6..e5beab28cd0f 100644 --- a/net/ipv4/ipvs/ip_vs_app.c +++ b/net/ipv4/ipvs/ip_vs_app.c @@ -331,7 +331,7 @@ static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb, struct ip_vs_app *app) { int diff; - unsigned int tcp_offset = (*pskb)->nh.iph->ihl*4; + const unsigned int tcp_offset = ip_hdrlen(*pskb); struct tcphdr *th; __u32 seq; @@ -406,7 +406,7 @@ static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb, struct ip_vs_app *app) { int diff; - unsigned int tcp_offset = (*pskb)->nh.iph->ihl*4; + const unsigned int tcp_offset = ip_hdrlen(*pskb); struct tcphdr *th; __u32 seq; diff --git a/net/ipv4/ipvs/ip_vs_core.c b/net/ipv4/ipvs/ip_vs_core.c index 5d54dd2ce12f..7893c00a91fe 100644 --- a/net/ipv4/ipvs/ip_vs_core.c +++ b/net/ipv4/ipvs/ip_vs_core.c @@ -713,8 +713,7 @@ static inline int is_tcp_reset(const struct sk_buff *skb) { struct tcphdr _tcph, *th; - th = skb_header_pointer(skb, skb->nh.iph->ihl * 4, - sizeof(_tcph), &_tcph); + th = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph); if (th == NULL) return 0; return th->rst; diff --git a/net/ipv4/ipvs/ip_vs_proto_tcp.c b/net/ipv4/ipvs/ip_vs_proto_tcp.c index 16a9ebee2fe6..e65382da713e 100644 --- a/net/ipv4/ipvs/ip_vs_proto_tcp.c +++ b/net/ipv4/ipvs/ip_vs_proto_tcp.c @@ -76,8 +76,7 @@ tcp_conn_schedule(struct sk_buff *skb, struct ip_vs_service *svc; struct tcphdr _tcph, *th; - th = skb_header_pointer(skb, skb->nh.iph->ihl*4, - sizeof(_tcph), &_tcph); + th = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph); if (th == NULL) { *verdict = NF_DROP; return 0; @@ -127,7 +126,7 @@ tcp_snat_handler(struct sk_buff **pskb, struct ip_vs_protocol *pp, struct ip_vs_conn *cp) { struct tcphdr *tcph; - unsigned int tcphoff = (*pskb)->nh.iph->ihl * 4; + const unsigned int tcphoff = ip_hdrlen(*pskb); /* csum_check requires unshared skb */ if (!ip_vs_make_skb_writable(pskb, tcphoff+sizeof(*tcph))) @@ -175,7 +174,7 @@ tcp_dnat_handler(struct sk_buff **pskb, struct ip_vs_protocol *pp, struct ip_vs_conn *cp) { struct tcphdr *tcph; - unsigned int tcphoff = (*pskb)->nh.iph->ihl * 4; + const unsigned int tcphoff = ip_hdrlen(*pskb); /* csum_check requires unshared skb */ if (!ip_vs_make_skb_writable(pskb, tcphoff+sizeof(*tcph))) @@ -224,7 +223,7 @@ tcp_dnat_handler(struct sk_buff **pskb, static int tcp_csum_check(struct sk_buff *skb, struct ip_vs_protocol *pp) { - unsigned int tcphoff = skb->nh.iph->ihl*4; + const unsigned int tcphoff = ip_hdrlen(skb); switch (skb->ip_summed) { case CHECKSUM_NONE: @@ -467,8 +466,7 @@ tcp_state_transition(struct ip_vs_conn *cp, int direction, { struct tcphdr _tcph, *th; - th = skb_header_pointer(skb, skb->nh.iph->ihl*4, - sizeof(_tcph), &_tcph); + th = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph); if (th == NULL) return 0; diff --git a/net/ipv4/ipvs/ip_vs_proto_udp.c b/net/ipv4/ipvs/ip_vs_proto_udp.c index 03f0a414cfa4..2cd950638923 100644 --- a/net/ipv4/ipvs/ip_vs_proto_udp.c +++ b/net/ipv4/ipvs/ip_vs_proto_udp.c @@ -22,7 +22,7 @@ #include <linux/udp.h> #include <net/ip_vs.h> - +#include <net/ip.h> static struct ip_vs_conn * udp_conn_in_get(const struct sk_buff *skb, struct ip_vs_protocol *pp, @@ -56,7 +56,7 @@ udp_conn_out_get(const struct sk_buff *skb, struct ip_vs_protocol *pp, struct ip_vs_conn *cp; __be16 _ports[2], *pptr; - pptr = skb_header_pointer(skb, skb->nh.iph->ihl*4, + pptr = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_ports), _ports); if (pptr == NULL) return NULL; @@ -82,7 +82,7 @@ udp_conn_schedule(struct sk_buff *skb, struct ip_vs_protocol *pp, struct ip_vs_service *svc; struct udphdr _udph, *uh; - uh = skb_header_pointer(skb, skb->nh.iph->ihl*4, + uh = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_udph), &_udph); if (uh == NULL) { *verdict = NF_DROP; @@ -133,7 +133,7 @@ udp_snat_handler(struct sk_buff **pskb, struct ip_vs_protocol *pp, struct ip_vs_conn *cp) { struct udphdr *udph; - unsigned int udphoff = (*pskb)->nh.iph->ihl * 4; + const unsigned int udphoff = ip_hdrlen(*pskb); /* csum_check requires unshared skb */ if (!ip_vs_make_skb_writable(pskb, udphoff+sizeof(*udph))) @@ -187,7 +187,7 @@ udp_dnat_handler(struct sk_buff **pskb, struct ip_vs_protocol *pp, struct ip_vs_conn *cp) { struct udphdr *udph; - unsigned int udphoff = (*pskb)->nh.iph->ihl * 4; + unsigned int udphoff = ip_hdrlen(*pskb); /* csum_check requires unshared skb */ if (!ip_vs_make_skb_writable(pskb, udphoff+sizeof(*udph))) @@ -239,7 +239,7 @@ static int udp_csum_check(struct sk_buff *skb, struct ip_vs_protocol *pp) { struct udphdr _udph, *uh; - unsigned int udphoff = skb->nh.iph->ihl*4; + const unsigned int udphoff = ip_hdrlen(skb); uh = skb_header_pointer(skb, udphoff, sizeof(_udph), &_udph); if (uh == NULL) diff --git a/net/ipv4/netfilter/ip_conntrack_amanda.c b/net/ipv4/netfilter/ip_conntrack_amanda.c index 4f561f52c83a..c40762c67d0e 100644 --- a/net/ipv4/netfilter/ip_conntrack_amanda.c +++ b/net/ipv4/netfilter/ip_conntrack_amanda.c @@ -103,7 +103,7 @@ static int help(struct sk_buff **pskb, ip_ct_refresh(ct, *pskb, master_timeout * HZ); /* No data? */ - dataoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr); if (dataoff >= (*pskb)->len) { if (net_ratelimit()) printk("amanda_help: skblen = %u\n", (*pskb)->len); diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c index 23b99ae2cc37..8c013d9f6907 100644 --- a/net/ipv4/netfilter/ip_conntrack_core.c +++ b/net/ipv4/netfilter/ip_conntrack_core.c @@ -750,8 +750,7 @@ resolve_normal_ct(struct sk_buff *skb, IP_NF_ASSERT((skb->nh.iph->frag_off & htons(IP_OFFSET)) == 0); - if (!ip_ct_get_tuple(skb->nh.iph, skb, skb->nh.iph->ihl*4, - &tuple,proto)) + if (!ip_ct_get_tuple(skb->nh.iph, skb, ip_hdrlen(skb), &tuple,proto)) return NULL; /* look for tuple match */ diff --git a/net/ipv4/netfilter/ip_conntrack_ftp.c b/net/ipv4/netfilter/ip_conntrack_ftp.c index 1faa68ab9432..92389987e789 100644 --- a/net/ipv4/netfilter/ip_conntrack_ftp.c +++ b/net/ipv4/netfilter/ip_conntrack_ftp.c @@ -319,12 +319,12 @@ static int help(struct sk_buff **pskb, return NF_ACCEPT; } - th = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl*4, + th = skb_header_pointer(*pskb, ip_hdrlen(*pskb), sizeof(_tcph), &_tcph); if (th == NULL) return NF_ACCEPT; - dataoff = (*pskb)->nh.iph->ihl*4 + th->doff*4; + dataoff = ip_hdrlen(*pskb) + th->doff * 4; /* No data? */ if (dataoff >= (*pskb)->len) { DEBUGP("ftp: pskblen = %u\n", (*pskb)->len); diff --git a/net/ipv4/netfilter/ip_conntrack_helper_h323.c b/net/ipv4/netfilter/ip_conntrack_helper_h323.c index 53eb365ccc7e..5d638149b0e0 100644 --- a/net/ipv4/netfilter/ip_conntrack_helper_h323.c +++ b/net/ipv4/netfilter/ip_conntrack_helper_h323.c @@ -115,13 +115,13 @@ static int get_tpkt_data(struct sk_buff **pskb, struct ip_conntrack *ct, int tpktoff; /* Get TCP header */ - th = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl * 4, + th = skb_header_pointer(*pskb, ip_hdrlen(*pskb), sizeof(_tcph), &_tcph); if (th == NULL) return 0; /* Get TCP data offset */ - tcpdataoff = (*pskb)->nh.iph->ihl * 4 + th->doff * 4; + tcpdataoff = ip_hdrlen(*pskb) + th->doff * 4; /* Get TCP data length */ tcpdatalen = (*pskb)->len - tcpdataoff; @@ -1185,11 +1185,10 @@ static unsigned char *get_udp_data(struct sk_buff **pskb, int *datalen) struct udphdr _uh, *uh; int dataoff; - uh = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl * 4, sizeof(_uh), - &_uh); + uh = skb_header_pointer(*pskb, ip_hdrlen(*pskb), sizeof(_uh), &_uh); if (uh == NULL) return NULL; - dataoff = (*pskb)->nh.iph->ihl * 4 + sizeof(_uh); + dataoff = ip_hdrlen(*pskb) + sizeof(_uh); if (dataoff >= (*pskb)->len) return NULL; *datalen = (*pskb)->len - dataoff; diff --git a/net/ipv4/netfilter/ip_conntrack_helper_pptp.c b/net/ipv4/netfilter/ip_conntrack_helper_pptp.c index 2b760c5cf709..f5ab8e4b97cb 100644 --- a/net/ipv4/netfilter/ip_conntrack_helper_pptp.c +++ b/net/ipv4/netfilter/ip_conntrack_helper_pptp.c @@ -543,7 +543,7 @@ conntrack_pptp_help(struct sk_buff **pskb, struct pptp_pkt_hdr _pptph, *pptph; struct PptpControlHeader _ctlh, *ctlh; union pptp_ctrl_union _pptpReq, *pptpReq; - unsigned int tcplen = (*pskb)->len - (*pskb)->nh.iph->ihl * 4; + unsigned int tcplen = (*pskb)->len - ip_hdrlen(*pskb); unsigned int datalen, reqlen, nexthdr_off; int oldsstate, oldcstate; int ret; @@ -556,7 +556,7 @@ conntrack_pptp_help(struct sk_buff **pskb, return NF_ACCEPT; } - nexthdr_off = (*pskb)->nh.iph->ihl*4; + nexthdr_off = ip_hdrlen(*pskb); tcph = skb_header_pointer(*pskb, nexthdr_off, sizeof(_tcph), &_tcph); BUG_ON(!tcph); nexthdr_off += tcph->doff * 4; diff --git a/net/ipv4/netfilter/ip_conntrack_irc.c b/net/ipv4/netfilter/ip_conntrack_irc.c index 053e591f407a..ee99abe482e3 100644 --- a/net/ipv4/netfilter/ip_conntrack_irc.c +++ b/net/ipv4/netfilter/ip_conntrack_irc.c @@ -130,13 +130,13 @@ static int help(struct sk_buff **pskb, } /* Not a full tcp header? */ - th = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl*4, + th = skb_header_pointer(*pskb, ip_hdrlen(*pskb), sizeof(_tcph), &_tcph); if (th == NULL) return NF_ACCEPT; /* No data? */ - dataoff = (*pskb)->nh.iph->ihl*4 + th->doff*4; + dataoff = ip_hdrlen(*pskb) + th->doff * 4; if (dataoff >= (*pskb)->len) return NF_ACCEPT; diff --git a/net/ipv4/netfilter/ip_conntrack_proto_icmp.c b/net/ipv4/netfilter/ip_conntrack_proto_icmp.c index ad70c81a21e0..e253f3ee52d0 100644 --- a/net/ipv4/netfilter/ip_conntrack_proto_icmp.c +++ b/net/ipv4/netfilter/ip_conntrack_proto_icmp.c @@ -149,7 +149,7 @@ icmp_error_message(struct sk_buff *skb, IP_NF_ASSERT(skb->nfct == NULL); /* Not enough header? */ - inside = skb_header_pointer(skb, skb->nh.iph->ihl*4, sizeof(_in), &_in); + inside = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_in), &_in); if (inside == NULL) return -NF_ACCEPT; @@ -161,7 +161,7 @@ icmp_error_message(struct sk_buff *skb, } innerproto = ip_conntrack_proto_find_get(inside->ip.protocol); - dataoff = skb->nh.iph->ihl*4 + sizeof(inside->icmp) + inside->ip.ihl*4; + dataoff = ip_hdrlen(skb) + sizeof(inside->icmp) + inside->ip.ihl * 4; /* Are they talking about one of our connections? */ if (!ip_ct_get_tuple(&inside->ip, skb, dataoff, &origtuple, innerproto)) { DEBUGP("icmp_error: ! get_tuple p=%u", inside->ip.protocol); @@ -214,7 +214,7 @@ icmp_error(struct sk_buff *skb, enum ip_conntrack_info *ctinfo, struct icmphdr _ih, *icmph; /* Not enough header? */ - icmph = skb_header_pointer(skb, skb->nh.iph->ihl*4, sizeof(_ih), &_ih); + icmph = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_ih), &_ih); if (icmph == NULL) { if (LOG_INVALID(IPPROTO_ICMP)) nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL, @@ -224,7 +224,7 @@ icmp_error(struct sk_buff *skb, enum ip_conntrack_info *ctinfo, /* See ip_conntrack_proto_tcp.c */ if (ip_conntrack_checksum && hooknum == NF_IP_PRE_ROUTING && - nf_ip_checksum(skb, hooknum, skb->nh.iph->ihl * 4, 0)) { + nf_ip_checksum(skb, hooknum, ip_hdrlen(skb), 0)) { if (LOG_INVALID(IPPROTO_ICMP)) nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL, "ip_ct_icmp: bad ICMP checksum "); diff --git a/net/ipv4/netfilter/ip_conntrack_proto_sctp.c b/net/ipv4/netfilter/ip_conntrack_proto_sctp.c index e6942992b2f6..e29c436144b3 100644 --- a/net/ipv4/netfilter/ip_conntrack_proto_sctp.c +++ b/net/ipv4/netfilter/ip_conntrack_proto_sctp.c @@ -206,7 +206,7 @@ static int sctp_print_conntrack(struct seq_file *s, } #define for_each_sctp_chunk(skb, sch, _sch, offset, count) \ -for (offset = skb->nh.iph->ihl * 4 + sizeof(sctp_sctphdr_t), count = 0; \ +for (offset = ip_hdrlen(skb) + sizeof(sctp_sctphdr_t), count = 0; \ offset < skb->len && \ (sch = skb_header_pointer(skb, offset, sizeof(_sch), &_sch)); \ offset += (ntohs(sch->length) + 3) & ~3, count++) diff --git a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c index 7ff11977eb4d..fce3a3c69815 100644 --- a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c +++ b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c @@ -771,7 +771,7 @@ void ip_conntrack_tcp_update(struct sk_buff *skb, enum ip_conntrack_dir dir) { struct iphdr *iph = skb->nh.iph; - struct tcphdr *tcph = (void *)skb->nh.iph + skb->nh.iph->ihl*4; + struct tcphdr *tcph = (void *)skb->nh.iph + ip_hdrlen(skb); __u32 end; #ifdef DEBUGP_VARS struct ip_ct_tcp_state *sender = &conntrack->proto.tcp.seen[dir]; diff --git a/net/ipv4/netfilter/ip_conntrack_sip.c b/net/ipv4/netfilter/ip_conntrack_sip.c index c59a962c1f61..7363e2a5cea4 100644 --- a/net/ipv4/netfilter/ip_conntrack_sip.c +++ b/net/ipv4/netfilter/ip_conntrack_sip.c @@ -402,7 +402,7 @@ static int sip_help(struct sk_buff **pskb, typeof(ip_nat_sip_hook) ip_nat_sip; /* No Data ? */ - dataoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr); if (dataoff >= (*pskb)->len) { DEBUGP("skb->len = %u\n", (*pskb)->len); return NF_ACCEPT; diff --git a/net/ipv4/netfilter/ip_conntrack_standalone.c b/net/ipv4/netfilter/ip_conntrack_standalone.c index 56b2f7546d1e..92609a4dcd74 100644 --- a/net/ipv4/netfilter/ip_conntrack_standalone.c +++ b/net/ipv4/netfilter/ip_conntrack_standalone.c @@ -458,7 +458,7 @@ static unsigned int ip_conntrack_local(unsigned int hooknum, { /* root is playing with raw sockets. */ if ((*pskb)->len < sizeof(struct iphdr) - || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) { + || ip_hdrlen(*pskb) < sizeof(struct iphdr)) { if (net_ratelimit()) printk("ipt_hook: happy cracking.\n"); return NF_ACCEPT; diff --git a/net/ipv4/netfilter/ip_conntrack_tftp.c b/net/ipv4/netfilter/ip_conntrack_tftp.c index 76e175e7a972..afc6809a3888 100644 --- a/net/ipv4/netfilter/ip_conntrack_tftp.c +++ b/net/ipv4/netfilter/ip_conntrack_tftp.c @@ -53,7 +53,7 @@ static int tftp_help(struct sk_buff **pskb, typeof(ip_nat_tftp_hook) ip_nat_tftp; tfh = skb_header_pointer(*pskb, - (*pskb)->nh.iph->ihl*4+sizeof(struct udphdr), + ip_hdrlen(*pskb) + sizeof(struct udphdr), sizeof(_tftph), &_tftph); if (tfh == NULL) return NF_ACCEPT; diff --git a/net/ipv4/netfilter/ip_nat_core.c b/net/ipv4/netfilter/ip_nat_core.c index 40737fdbe9a7..cf46930606f2 100644 --- a/net/ipv4/netfilter/ip_nat_core.c +++ b/net/ipv4/netfilter/ip_nat_core.c @@ -422,7 +422,7 @@ int ip_nat_icmp_reply_translation(struct ip_conntrack *ct, } *inside; struct ip_conntrack_protocol *proto; struct ip_conntrack_tuple inner, target; - int hdrlen = (*pskb)->nh.iph->ihl * 4; + int hdrlen = ip_hdrlen(*pskb); enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo); unsigned long statusbit; enum ip_nat_manip_type manip = HOOK2MANIP(hooknum); @@ -430,7 +430,7 @@ int ip_nat_icmp_reply_translation(struct ip_conntrack *ct, if (!skb_make_writable(pskb, hdrlen + sizeof(*inside))) return 0; - inside = (void *)(*pskb)->data + (*pskb)->nh.iph->ihl*4; + inside = (void *)(*pskb)->data + ip_hdrlen(*pskb); /* We're actually going to mangle it beyond trivial checksum adjustment, so make sure the current checksum is correct. */ @@ -458,7 +458,7 @@ int ip_nat_icmp_reply_translation(struct ip_conntrack *ct, /* rcu_read_lock()ed by nf_hook_slow */ proto = __ip_conntrack_proto_find(inside->ip.protocol); - if (!ip_ct_get_tuple(&inside->ip, *pskb, (*pskb)->nh.iph->ihl*4 + + if (!ip_ct_get_tuple(&inside->ip, *pskb, ip_hdrlen(*pskb) + sizeof(struct icmphdr) + inside->ip.ihl*4, &inner, proto)) return 0; @@ -469,15 +469,14 @@ int ip_nat_icmp_reply_translation(struct ip_conntrack *ct, packet: PREROUTING (DST manip), routing produces ICMP, goes through POSTROUTING (which must correct the DST manip). */ if (!manip_pkt(inside->ip.protocol, pskb, - (*pskb)->nh.iph->ihl*4 - + sizeof(inside->icmp), + ip_hdrlen(*pskb) + sizeof(inside->icmp), &ct->tuplehash[!dir].tuple, !manip)) return 0; if ((*pskb)->ip_summed != CHECKSUM_PARTIAL) { /* Reloading "inside" here since manip_pkt inner. */ - inside = (void *)(*pskb)->data + (*pskb)->nh.iph->ihl*4; + inside = (void *)(*pskb)->data + ip_hdrlen(*pskb); inside->icmp.checksum = 0; inside->icmp.checksum = csum_fold(skb_checksum(*pskb, hdrlen, (*pskb)->len - hdrlen, diff --git a/net/ipv4/netfilter/ip_nat_helper.c b/net/ipv4/netfilter/ip_nat_helper.c index dc778cfef58b..25624e558562 100644 --- a/net/ipv4/netfilter/ip_nat_helper.c +++ b/net/ipv4/netfilter/ip_nat_helper.c @@ -322,8 +322,8 @@ ip_nat_sack_adjust(struct sk_buff **pskb, { unsigned int dir, optoff, optend; - optoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct tcphdr); - optend = (*pskb)->nh.iph->ihl*4 + tcph->doff*4; + optoff = ip_hdrlen(*pskb) + sizeof(struct tcphdr); + optend = ip_hdrlen(*pskb) + tcph->doff * 4; if (!skb_make_writable(pskb, optend)) return 0; @@ -374,10 +374,10 @@ ip_nat_seq_adjust(struct sk_buff **pskb, this_way = &ct->nat.info.seq[dir]; other_way = &ct->nat.info.seq[!dir]; - if (!skb_make_writable(pskb, (*pskb)->nh.iph->ihl*4+sizeof(*tcph))) + if (!skb_make_writable(pskb, ip_hdrlen(*pskb) + sizeof(*tcph))) return 0; - tcph = (void *)(*pskb)->data + (*pskb)->nh.iph->ihl*4; + tcph = (void *)(*pskb)->data + ip_hdrlen(*pskb); if (after(ntohl(tcph->seq), this_way->correction_pos)) newseq = htonl(ntohl(tcph->seq) + this_way->offset_after); else diff --git a/net/ipv4/netfilter/ip_nat_helper_h323.c b/net/ipv4/netfilter/ip_nat_helper_h323.c index bdc99ef6159e..8b1e3388bd08 100644 --- a/net/ipv4/netfilter/ip_nat_helper_h323.c +++ b/net/ipv4/netfilter/ip_nat_helper_h323.c @@ -57,11 +57,11 @@ static int set_addr(struct sk_buff **pskb, } /* Relocate data pointer */ - th = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl * 4, + th = skb_header_pointer(*pskb, ip_hdrlen(*pskb), sizeof(_tcph), &_tcph); if (th == NULL) return -1; - *data = (*pskb)->data + (*pskb)->nh.iph->ihl * 4 + + *data = (*pskb)->data + ip_hdrlen(*pskb) + th->doff * 4 + dataoff; } else { if (!ip_nat_mangle_udp_packet(pskb, ct, ctinfo, @@ -75,8 +75,8 @@ static int set_addr(struct sk_buff **pskb, /* ip_nat_mangle_udp_packet uses skb_make_writable() to copy * or pull everything in a linear buffer, so we can safely * use the skb pointers now */ - *data = (*pskb)->data + (*pskb)->nh.iph->ihl * 4 + - sizeof(struct udphdr); + *data = ((*pskb)->data + ip_hdrlen(*pskb) + + sizeof(struct udphdr)); } return 0; diff --git a/net/ipv4/netfilter/ip_nat_sip.c b/net/ipv4/netfilter/ip_nat_sip.c index 325c5a9dc2ef..84953601762d 100644 --- a/net/ipv4/netfilter/ip_nat_sip.c +++ b/net/ipv4/netfilter/ip_nat_sip.c @@ -90,7 +90,7 @@ static int map_sip_addr(struct sk_buff **pskb, enum ip_conntrack_info ctinfo, if (!ip_nat_mangle_udp_packet(pskb, ct, ctinfo, matchoff, matchlen, addr, addrlen)) return 0; - *dptr = (*pskb)->data + (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + *dptr = (*pskb)->data + ip_hdrlen(*pskb) + sizeof(struct udphdr); return 1; } @@ -104,7 +104,7 @@ static unsigned int ip_nat_sip(struct sk_buff **pskb, struct addr_map map; int dataoff, datalen; - dataoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr); datalen = (*pskb)->len - dataoff; if (datalen < sizeof("SIP/2.0") - 1) return NF_DROP; @@ -153,7 +153,7 @@ static unsigned int mangle_sip_packet(struct sk_buff **pskb, return 0; /* We need to reload this. Thanks Patrick. */ - *dptr = (*pskb)->data + (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + *dptr = (*pskb)->data + ip_hdrlen(*pskb) + sizeof(struct udphdr); return 1; } @@ -166,7 +166,7 @@ static int mangle_content_len(struct sk_buff **pskb, char buffer[sizeof("65536")]; int bufflen; - dataoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr); /* Get actual SDP lenght */ if (ct_sip_get_info(dptr, (*pskb)->len - dataoff, &matchoff, @@ -199,7 +199,7 @@ static unsigned int mangle_sdp(struct sk_buff **pskb, char buffer[sizeof("nnn.nnn.nnn.nnn")]; unsigned int dataoff, bufflen; - dataoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr); /* Mangle owner and contact info. */ bufflen = sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(newip)); diff --git a/net/ipv4/netfilter/ip_nat_standalone.c b/net/ipv4/netfilter/ip_nat_standalone.c index 6bcfdf6dfcc9..dbaaf78ff9a3 100644 --- a/net/ipv4/netfilter/ip_nat_standalone.c +++ b/net/ipv4/netfilter/ip_nat_standalone.c @@ -112,8 +112,7 @@ ip_nat_fn(unsigned int hooknum, if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) { struct icmphdr _hdr, *hp; - hp = skb_header_pointer(*pskb, - (*pskb)->nh.iph->ihl*4, + hp = skb_header_pointer(*pskb, ip_hdrlen(*pskb), sizeof(_hdr), &_hdr); if (hp != NULL && hp->type == ICMP_REDIRECT) @@ -211,7 +210,7 @@ ip_nat_out(unsigned int hooknum, /* root is playing with raw sockets. */ if ((*pskb)->len < sizeof(struct iphdr) - || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) + || ip_hdrlen(*pskb) < sizeof(struct iphdr)) return NF_ACCEPT; ret = ip_nat_fn(hooknum, pskb, in, out, okfn); @@ -244,7 +243,7 @@ ip_nat_local_fn(unsigned int hooknum, /* root is playing with raw sockets. */ if ((*pskb)->len < sizeof(struct iphdr) - || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) + || ip_hdrlen(*pskb) < sizeof(struct iphdr)) return NF_ACCEPT; ret = ip_nat_fn(hooknum, pskb, in, out, okfn); diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c index 50cc4b92e284..f66966650212 100644 --- a/net/ipv4/netfilter/ip_tables.c +++ b/net/ipv4/netfilter/ip_tables.c @@ -198,7 +198,7 @@ int do_match(struct ipt_entry_match *m, { /* Stop iteration if it doesn't match */ if (!m->u.kernel.match->match(skb, in, out, m->u.kernel.match, m->data, - offset, skb->nh.iph->ihl*4, hotdrop)) + offset, ip_hdrlen(skb), hotdrop)) return 1; else return 0; diff --git a/net/ipv4/netfilter/ipt_ECN.c b/net/ipv4/netfilter/ipt_ECN.c index 4f565633631d..44daf9e1da35 100644 --- a/net/ipv4/netfilter/ipt_ECN.c +++ b/net/ipv4/netfilter/ipt_ECN.c @@ -13,6 +13,7 @@ #include <linux/module.h> #include <linux/skbuff.h> #include <linux/ip.h> +#include <net/ip.h> #include <linux/tcp.h> #include <net/checksum.h> @@ -52,7 +53,7 @@ set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo) __be16 oldval; /* Not enought header? */ - tcph = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl*4, + tcph = skb_header_pointer(*pskb, ip_hdrlen(*pskb), sizeof(_tcph), &_tcph); if (!tcph) return 0; @@ -63,9 +64,9 @@ set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo) tcph->cwr == einfo->proto.tcp.cwr))) return 1; - if (!skb_make_writable(pskb, (*pskb)->nh.iph->ihl*4+sizeof(*tcph))) + if (!skb_make_writable(pskb, ip_hdrlen(*pskb) + sizeof(*tcph))) return 0; - tcph = (void *)(*pskb)->nh.iph + (*pskb)->nh.iph->ihl*4; + tcph = (void *)(*pskb)->nh.iph + ip_hdrlen(*pskb); oldval = ((__be16 *)tcph)[6]; if (einfo->operation & IPT_ECN_OP_SET_ECE) diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c index 80f739e21824..01c04f0e5c91 100644 --- a/net/ipv4/netfilter/ipt_REJECT.c +++ b/net/ipv4/netfilter/ipt_REJECT.c @@ -43,7 +43,6 @@ MODULE_DESCRIPTION("iptables REJECT target module"); static void send_reset(struct sk_buff *oldskb, int hook) { struct sk_buff *nskb; - struct iphdr *iph = oldskb->nh.iph; struct tcphdr _otcph, *oth, *tcph; __be16 tmp_port; __be32 tmp_addr; @@ -54,7 +53,7 @@ static void send_reset(struct sk_buff *oldskb, int hook) if (oldskb->nh.iph->frag_off & htons(IP_OFFSET)) return; - oth = skb_header_pointer(oldskb, oldskb->nh.iph->ihl * 4, + oth = skb_header_pointer(oldskb, ip_hdrlen(oldskb), sizeof(_otcph), &_otcph); if (oth == NULL) return; @@ -64,7 +63,7 @@ static void send_reset(struct sk_buff *oldskb, int hook) return; /* Check checksum */ - if (nf_ip_checksum(oldskb, hook, iph->ihl * 4, IPPROTO_TCP)) + if (nf_ip_checksum(oldskb, hook, ip_hdrlen(oldskb), IPPROTO_TCP)) return; /* We need a linear, writeable skb. We also need to expand @@ -84,7 +83,7 @@ static void send_reset(struct sk_buff *oldskb, int hook) skb_shinfo(nskb)->gso_segs = 0; skb_shinfo(nskb)->gso_type = 0; - tcph = (struct tcphdr *)((u_int32_t*)nskb->nh.iph + nskb->nh.iph->ihl); + tcph = (struct tcphdr *)(skb_network_header(nskb) + ip_hdrlen(nskb)); /* Swap source and dest */ tmp_addr = nskb->nh.iph->saddr; @@ -96,7 +95,7 @@ static void send_reset(struct sk_buff *oldskb, int hook) /* Truncate to length (no data) */ tcph->doff = sizeof(struct tcphdr)/4; - skb_trim(nskb, nskb->nh.iph->ihl*4 + sizeof(struct tcphdr)); + skb_trim(nskb, ip_hdrlen(nskb) + sizeof(struct tcphdr)); nskb->nh.iph->tot_len = htons(nskb->len); if (tcph->ack) { @@ -105,9 +104,9 @@ static void send_reset(struct sk_buff *oldskb, int hook) tcph->ack_seq = 0; } else { needs_ack = 1; - tcph->ack_seq = htonl(ntohl(oth->seq) + oth->syn + oth->fin - + oldskb->len - oldskb->nh.iph->ihl*4 - - (oth->doff<<2)); + tcph->ack_seq = htonl(ntohl(oth->seq) + oth->syn + oth->fin + + oldskb->len - ip_hdrlen(oldskb) - + (oth->doff << 2)); tcph->seq = 0; } @@ -149,7 +148,7 @@ static void send_reset(struct sk_buff *oldskb, int hook) /* Adjust IP checksum */ nskb->nh.iph->check = 0; - nskb->nh.iph->check = ip_fast_csum((unsigned char *)nskb->nh.iph, + nskb->nh.iph->check = ip_fast_csum(skb_network_header(nskb), nskb->nh.iph->ihl); /* "Never happens" */ @@ -182,7 +181,7 @@ static unsigned int reject(struct sk_buff **pskb, /* Our naive response construction doesn't deal with IP options, and probably shouldn't try. */ - if ((*pskb)->nh.iph->ihl<<2 != sizeof(struct iphdr)) + if (ip_hdrlen(*pskb) != sizeof(struct iphdr)) return NF_DROP; /* WARNING: This code causes reentry within iptables. diff --git a/net/ipv4/netfilter/ipt_ecn.c b/net/ipv4/netfilter/ipt_ecn.c index 37508b2cfea6..b8ade3cc7757 100644 --- a/net/ipv4/netfilter/ipt_ecn.c +++ b/net/ipv4/netfilter/ipt_ecn.c @@ -11,6 +11,7 @@ #include <linux/in.h> #include <linux/ip.h> +#include <net/ip.h> #include <linux/module.h> #include <linux/skbuff.h> #include <linux/tcp.h> @@ -38,8 +39,7 @@ static inline int match_tcp(const struct sk_buff *skb, /* In practice, TCP match does this, so can't fail. But let's * be good citizens. */ - th = skb_header_pointer(skb, skb->nh.iph->ihl * 4, - sizeof(_tcph), &_tcph); + th = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph); if (th == NULL) { *hotdrop = 0; return 0; diff --git a/net/ipv4/netfilter/iptable_filter.c b/net/ipv4/netfilter/iptable_filter.c index d1d61e97b976..42728909eba0 100644 --- a/net/ipv4/netfilter/iptable_filter.c +++ b/net/ipv4/netfilter/iptable_filter.c @@ -13,6 +13,7 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/netfilter_ipv4/ip_tables.h> +#include <net/ip.h> MODULE_LICENSE("GPL"); MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>"); @@ -102,7 +103,7 @@ ipt_local_out_hook(unsigned int hook, { /* root is playing with raw sockets. */ if ((*pskb)->len < sizeof(struct iphdr) - || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) { + || ip_hdrlen(*pskb) < sizeof(struct iphdr)) { if (net_ratelimit()) printk("ipt_hook: happy cracking.\n"); return NF_ACCEPT; diff --git a/net/ipv4/netfilter/iptable_mangle.c b/net/ipv4/netfilter/iptable_mangle.c index 98b66ef0c714..6cc3245f676a 100644 --- a/net/ipv4/netfilter/iptable_mangle.c +++ b/net/ipv4/netfilter/iptable_mangle.c @@ -17,6 +17,7 @@ #include <net/sock.h> #include <net/route.h> #include <linux/ip.h> +#include <net/ip.h> MODULE_LICENSE("GPL"); MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>"); @@ -136,7 +137,7 @@ ipt_local_hook(unsigned int hook, /* root is playing with raw sockets. */ if ((*pskb)->len < sizeof(struct iphdr) - || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) { + || ip_hdrlen(*pskb) < sizeof(struct iphdr)) { if (net_ratelimit()) printk("ipt_hook: happy cracking.\n"); return NF_ACCEPT; diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c index 7cebbff0b0c3..fa14eb77f9b6 100644 --- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c +++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c @@ -105,7 +105,7 @@ ipv4_prepare(struct sk_buff **pskb, unsigned int hooknum, unsigned int *dataoff, return -NF_DROP; } - *dataoff = skb_network_offset(*pskb) + (*pskb)->nh.iph->ihl * 4; + *dataoff = skb_network_offset(*pskb) + ip_hdrlen(*pskb); *protonum = (*pskb)->nh.iph->protocol; return NF_ACCEPT; @@ -151,8 +151,8 @@ static unsigned int ipv4_conntrack_help(unsigned int hooknum, if (!help || !help->helper) return NF_ACCEPT; - return help->helper->help(pskb, (skb_network_offset(*pskb) + - (*pskb)->nh.iph->ihl * 4), + return help->helper->help(pskb, + skb_network_offset(*pskb) + ip_hdrlen(*pskb), ct, ctinfo); } @@ -198,7 +198,7 @@ static unsigned int ipv4_conntrack_local(unsigned int hooknum, { /* root is playing with raw sockets. */ if ((*pskb)->len < sizeof(struct iphdr) - || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) { + || ip_hdrlen(*pskb) < sizeof(struct iphdr)) { if (net_ratelimit()) printk("ipt_hook: happy cracking.\n"); return NF_ACCEPT; diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c index 5fd1e5363c1a..e090e929e6e2 100644 --- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c +++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c @@ -158,7 +158,7 @@ icmp_error_message(struct sk_buff *skb, NF_CT_ASSERT(skb->nfct == NULL); /* Not enough header? */ - inside = skb_header_pointer(skb, skb->nh.iph->ihl*4, sizeof(_in), &_in); + inside = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_in), &_in); if (inside == NULL) return -NF_ACCEPT; @@ -172,7 +172,7 @@ icmp_error_message(struct sk_buff *skb, /* rcu_read_lock()ed by nf_hook_slow */ innerproto = __nf_ct_l4proto_find(PF_INET, inside->ip.protocol); - dataoff = skb->nh.iph->ihl*4 + sizeof(inside->icmp); + dataoff = ip_hdrlen(skb) + sizeof(inside->icmp); /* Are they talking about one of our connections? */ if (!nf_ct_get_tuple(skb, dataoff, dataoff + inside->ip.ihl*4, PF_INET, inside->ip.protocol, &origtuple, @@ -227,7 +227,7 @@ icmp_error(struct sk_buff *skb, unsigned int dataoff, struct icmphdr _ih, *icmph; /* Not enough header? */ - icmph = skb_header_pointer(skb, skb->nh.iph->ihl*4, sizeof(_ih), &_ih); + icmph = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_ih), &_ih); if (icmph == NULL) { if (LOG_INVALID(IPPROTO_ICMP)) nf_log_packet(PF_INET, 0, skb, NULL, NULL, NULL, diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c index 452e9d326684..ea02f00d2dac 100644 --- a/net/ipv4/netfilter/nf_nat_core.c +++ b/net/ipv4/netfilter/nf_nat_core.c @@ -431,7 +431,7 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct, } *inside; struct nf_conntrack_l4proto *l4proto; struct nf_conntrack_tuple inner, target; - int hdrlen = (*pskb)->nh.iph->ihl * 4; + int hdrlen = ip_hdrlen(*pskb); enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo); unsigned long statusbit; enum nf_nat_manip_type manip = HOOK2MANIP(hooknum); @@ -439,7 +439,7 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct, if (!skb_make_writable(pskb, hdrlen + sizeof(*inside))) return 0; - inside = (void *)(*pskb)->data + (*pskb)->nh.iph->ihl*4; + inside = (void *)(*pskb)->data + ip_hdrlen(*pskb); /* We're actually going to mangle it beyond trivial checksum adjustment, so make sure the current checksum is correct. */ @@ -469,9 +469,9 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct, l4proto = __nf_ct_l4proto_find(PF_INET, inside->ip.protocol); if (!nf_ct_get_tuple(*pskb, - (*pskb)->nh.iph->ihl*4 + sizeof(struct icmphdr), - (*pskb)->nh.iph->ihl*4 + - sizeof(struct icmphdr) + inside->ip.ihl*4, + ip_hdrlen(*pskb) + sizeof(struct icmphdr), + (ip_hdrlen(*pskb) + + sizeof(struct icmphdr) + inside->ip.ihl * 4), (u_int16_t)AF_INET, inside->ip.protocol, &inner, l3proto, l4proto)) @@ -483,14 +483,14 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct, packet: PREROUTING (DST manip), routing produces ICMP, goes through POSTROUTING (which must correct the DST manip). */ if (!manip_pkt(inside->ip.protocol, pskb, - (*pskb)->nh.iph->ihl*4 + sizeof(inside->icmp), + ip_hdrlen(*pskb) + sizeof(inside->icmp), &ct->tuplehash[!dir].tuple, !manip)) return 0; if ((*pskb)->ip_summed != CHECKSUM_PARTIAL) { /* Reloading "inside" here since manip_pkt inner. */ - inside = (void *)(*pskb)->data + (*pskb)->nh.iph->ihl*4; + inside = (void *)(*pskb)->data + ip_hdrlen(*pskb); inside->icmp.checksum = 0; inside->icmp.checksum = csum_fold(skb_checksum(*pskb, hdrlen, diff --git a/net/ipv4/netfilter/nf_nat_h323.c b/net/ipv4/netfilter/nf_nat_h323.c index 9cbf3f9be13b..2eb3832db3a4 100644 --- a/net/ipv4/netfilter/nf_nat_h323.c +++ b/net/ipv4/netfilter/nf_nat_h323.c @@ -55,11 +55,11 @@ static int set_addr(struct sk_buff **pskb, } /* Relocate data pointer */ - th = skb_header_pointer(*pskb, (*pskb)->nh.iph->ihl * 4, + th = skb_header_pointer(*pskb, ip_hdrlen(*pskb), sizeof(_tcph), &_tcph); if (th == NULL) return -1; - *data = (*pskb)->data + (*pskb)->nh.iph->ihl * 4 + + *data = (*pskb)->data + ip_hdrlen(*pskb) + th->doff * 4 + dataoff; } else { if (!nf_nat_mangle_udp_packet(pskb, ct, ctinfo, @@ -73,8 +73,8 @@ static int set_addr(struct sk_buff **pskb, /* nf_nat_mangle_udp_packet uses skb_make_writable() to copy * or pull everything in a linear buffer, so we can safely * use the skb pointers now */ - *data = (*pskb)->data + (*pskb)->nh.iph->ihl * 4 + - sizeof(struct udphdr); + *data = ((*pskb)->data + ip_hdrlen(*pskb) + + sizeof(struct udphdr)); } return 0; diff --git a/net/ipv4/netfilter/nf_nat_helper.c b/net/ipv4/netfilter/nf_nat_helper.c index 49a90c39ffce..723302afd840 100644 --- a/net/ipv4/netfilter/nf_nat_helper.c +++ b/net/ipv4/netfilter/nf_nat_helper.c @@ -190,7 +190,7 @@ nf_nat_mangle_tcp_packet(struct sk_buff **pskb, (int)rep_len - (int)match_len, ct, ctinfo); /* Tell TCP window tracking about seq change */ - nf_conntrack_tcp_update(*pskb, (*pskb)->nh.iph->ihl*4, + nf_conntrack_tcp_update(*pskb, ip_hdrlen(*pskb), ct, CTINFO2DIR(ctinfo)); } return 1; @@ -318,8 +318,8 @@ nf_nat_sack_adjust(struct sk_buff **pskb, unsigned int dir, optoff, optend; struct nf_conn_nat *nat = nfct_nat(ct); - optoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct tcphdr); - optend = (*pskb)->nh.iph->ihl*4 + tcph->doff*4; + optoff = ip_hdrlen(*pskb) + sizeof(struct tcphdr); + optend = ip_hdrlen(*pskb) + tcph->doff * 4; if (!skb_make_writable(pskb, optend)) return 0; @@ -371,10 +371,10 @@ nf_nat_seq_adjust(struct sk_buff **pskb, this_way = &nat->info.seq[dir]; other_way = &nat->info.seq[!dir]; - if (!skb_make_writable(pskb, (*pskb)->nh.iph->ihl*4+sizeof(*tcph))) + if (!skb_make_writable(pskb, ip_hdrlen(*pskb) + sizeof(*tcph))) return 0; - tcph = (void *)(*pskb)->data + (*pskb)->nh.iph->ihl*4; + tcph = (void *)(*pskb)->data + ip_hdrlen(*pskb); if (after(ntohl(tcph->seq), this_way->correction_pos)) newseq = htonl(ntohl(tcph->seq) + this_way->offset_after); else @@ -399,7 +399,7 @@ nf_nat_seq_adjust(struct sk_buff **pskb, if (!nf_nat_sack_adjust(pskb, tcph, ct, ctinfo)) return 0; - nf_conntrack_tcp_update(*pskb, (*pskb)->nh.iph->ihl*4, ct, dir); + nf_conntrack_tcp_update(*pskb, ip_hdrlen(*pskb), ct, dir); return 1; } diff --git a/net/ipv4/netfilter/nf_nat_sip.c b/net/ipv4/netfilter/nf_nat_sip.c index b12cd7c314ca..bfd88e4e0685 100644 --- a/net/ipv4/netfilter/nf_nat_sip.c +++ b/net/ipv4/netfilter/nf_nat_sip.c @@ -11,6 +11,7 @@ #include <linux/module.h> #include <linux/skbuff.h> #include <linux/ip.h> +#include <net/ip.h> #include <linux/udp.h> #include <net/netfilter/nf_nat.h> @@ -92,7 +93,7 @@ static int map_sip_addr(struct sk_buff **pskb, enum ip_conntrack_info ctinfo, if (!nf_nat_mangle_udp_packet(pskb, ct, ctinfo, matchoff, matchlen, addr, addrlen)) return 0; - *dptr = (*pskb)->data + (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + *dptr = (*pskb)->data + ip_hdrlen(*pskb) + sizeof(struct udphdr); return 1; } @@ -106,7 +107,7 @@ static unsigned int ip_nat_sip(struct sk_buff **pskb, struct addr_map map; int dataoff, datalen; - dataoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr); datalen = (*pskb)->len - dataoff; if (datalen < sizeof("SIP/2.0") - 1) return NF_DROP; @@ -155,7 +156,7 @@ static unsigned int mangle_sip_packet(struct sk_buff **pskb, return 0; /* We need to reload this. Thanks Patrick. */ - *dptr = (*pskb)->data + (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + *dptr = (*pskb)->data + ip_hdrlen(*pskb) + sizeof(struct udphdr); return 1; } @@ -168,7 +169,7 @@ static int mangle_content_len(struct sk_buff **pskb, char buffer[sizeof("65536")]; int bufflen; - dataoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr); /* Get actual SDP lenght */ if (ct_sip_get_info(ct, dptr, (*pskb)->len - dataoff, &matchoff, @@ -200,7 +201,7 @@ static unsigned int mangle_sdp(struct sk_buff **pskb, char buffer[sizeof("nnn.nnn.nnn.nnn")]; unsigned int dataoff, bufflen; - dataoff = (*pskb)->nh.iph->ihl*4 + sizeof(struct udphdr); + dataoff = ip_hdrlen(*pskb) + sizeof(struct udphdr); /* Mangle owner and contact info. */ bufflen = sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(newip)); diff --git a/net/ipv4/netfilter/nf_nat_standalone.c b/net/ipv4/netfilter/nf_nat_standalone.c index 15aa3db8cb33..61ca272165a1 100644 --- a/net/ipv4/netfilter/nf_nat_standalone.c +++ b/net/ipv4/netfilter/nf_nat_standalone.c @@ -101,8 +101,7 @@ nf_nat_fn(unsigned int hooknum, if ((*pskb)->nh.iph->protocol == IPPROTO_ICMP) { struct icmphdr _hdr, *hp; - hp = skb_header_pointer(*pskb, - (*pskb)->nh.iph->ihl*4, + hp = skb_header_pointer(*pskb, ip_hdrlen(*pskb), sizeof(_hdr), &_hdr); if (hp != NULL && hp->type == ICMP_REDIRECT) @@ -203,7 +202,7 @@ nf_nat_out(unsigned int hooknum, /* root is playing with raw sockets. */ if ((*pskb)->len < sizeof(struct iphdr) || - (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) + ip_hdrlen(*pskb) < sizeof(struct iphdr)) return NF_ACCEPT; ret = nf_nat_fn(hooknum, pskb, in, out, okfn); @@ -236,7 +235,7 @@ nf_nat_local_fn(unsigned int hooknum, /* root is playing with raw sockets. */ if ((*pskb)->len < sizeof(struct iphdr) || - (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) + ip_hdrlen(*pskb) < sizeof(struct iphdr)) return NF_ACCEPT; ret = nf_nat_fn(hooknum, pskb, in, out, okfn); diff --git a/net/ipv6/netfilter/ip6table_filter.c b/net/ipv6/netfilter/ip6table_filter.c index 112a21d0c6da..76f0cf66f95c 100644 --- a/net/ipv6/netfilter/ip6table_filter.c +++ b/net/ipv6/netfilter/ip6table_filter.c @@ -102,7 +102,7 @@ ip6t_local_out_hook(unsigned int hook, #if 0 /* root is playing with raw sockets. */ if ((*pskb)->len < sizeof(struct iphdr) - || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) { + || ip_hdrlen(*pskb) < sizeof(struct iphdr)) { if (net_ratelimit()) printk("ip6t_hook: happy cracking.\n"); return NF_ACCEPT; diff --git a/net/ipv6/netfilter/ip6table_mangle.c b/net/ipv6/netfilter/ip6table_mangle.c index 0c468d35a937..da2c1994539b 100644 --- a/net/ipv6/netfilter/ip6table_mangle.c +++ b/net/ipv6/netfilter/ip6table_mangle.c @@ -138,7 +138,7 @@ ip6t_local_hook(unsigned int hook, #if 0 /* root is playing with raw sockets. */ if ((*pskb)->len < sizeof(struct iphdr) - || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) { + || ip_hdrlen(*pskb) < sizeof(struct iphdr)) { if (net_ratelimit()) printk("ip6t_hook: happy cracking.\n"); return NF_ACCEPT; |