aboutsummaryrefslogtreecommitdiff
path: root/net/ipv4/ipvs
diff options
context:
space:
mode:
Diffstat (limited to 'net/ipv4/ipvs')
-rw-r--r--net/ipv4/ipvs/ip_vs_app.c33
-rw-r--r--net/ipv4/ipvs/ip_vs_core.c104
-rw-r--r--net/ipv4/ipvs/ip_vs_ftp.c19
-rw-r--r--net/ipv4/ipvs/ip_vs_proto_tcp.c51
-rw-r--r--net/ipv4/ipvs/ip_vs_proto_udp.c51
-rw-r--r--net/ipv4/ipvs/ip_vs_xmit.c6
6 files changed, 104 insertions, 160 deletions
diff --git a/net/ipv4/ipvs/ip_vs_app.c b/net/ipv4/ipvs/ip_vs_app.c
index 341474eefa5..664cb8e97c1 100644
--- a/net/ipv4/ipvs/ip_vs_app.c
+++ b/net/ipv4/ipvs/ip_vs_app.c
@@ -25,6 +25,7 @@
#include <linux/skbuff.h>
#include <linux/in.h>
#include <linux/ip.h>
+#include <linux/netfilter.h>
#include <net/net_namespace.h>
#include <net/protocol.h>
#include <net/tcp.h>
@@ -328,18 +329,18 @@ static inline void vs_seq_update(struct ip_vs_conn *cp, struct ip_vs_seq *vseq,
spin_unlock(&cp->lock);
}
-static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb,
+static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff *skb,
struct ip_vs_app *app)
{
int diff;
- const unsigned int tcp_offset = ip_hdrlen(*pskb);
+ const unsigned int tcp_offset = ip_hdrlen(skb);
struct tcphdr *th;
__u32 seq;
- if (!ip_vs_make_skb_writable(pskb, tcp_offset + sizeof(*th)))
+ if (!skb_make_writable(skb, tcp_offset + sizeof(*th)))
return 0;
- th = (struct tcphdr *)(skb_network_header(*pskb) + tcp_offset);
+ th = (struct tcphdr *)(skb_network_header(skb) + tcp_offset);
/*
* Remember seq number in case this pkt gets resized
@@ -360,7 +361,7 @@ static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb,
if (app->pkt_out == NULL)
return 1;
- if (!app->pkt_out(app, cp, pskb, &diff))
+ if (!app->pkt_out(app, cp, skb, &diff))
return 0;
/*
@@ -378,7 +379,7 @@ static inline int app_tcp_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb,
* called by ipvs packet handler, assumes previously checked cp!=NULL
* returns false if it can't handle packet (oom)
*/
-int ip_vs_app_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb)
+int ip_vs_app_pkt_out(struct ip_vs_conn *cp, struct sk_buff *skb)
{
struct ip_vs_app *app;
@@ -391,7 +392,7 @@ int ip_vs_app_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb)
/* TCP is complicated */
if (cp->protocol == IPPROTO_TCP)
- return app_tcp_pkt_out(cp, pskb, app);
+ return app_tcp_pkt_out(cp, skb, app);
/*
* Call private output hook function
@@ -399,22 +400,22 @@ int ip_vs_app_pkt_out(struct ip_vs_conn *cp, struct sk_buff **pskb)
if (app->pkt_out == NULL)
return 1;
- return app->pkt_out(app, cp, pskb, NULL);
+ return app->pkt_out(app, cp, skb, NULL);
}
-static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb,
+static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff *skb,
struct ip_vs_app *app)
{
int diff;
- const unsigned int tcp_offset = ip_hdrlen(*pskb);
+ const unsigned int tcp_offset = ip_hdrlen(skb);
struct tcphdr *th;
__u32 seq;
- if (!ip_vs_make_skb_writable(pskb, tcp_offset + sizeof(*th)))
+ if (!skb_make_writable(skb, tcp_offset + sizeof(*th)))
return 0;
- th = (struct tcphdr *)(skb_network_header(*pskb) + tcp_offset);
+ th = (struct tcphdr *)(skb_network_header(skb) + tcp_offset);
/*
* Remember seq number in case this pkt gets resized
@@ -435,7 +436,7 @@ static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb,
if (app->pkt_in == NULL)
return 1;
- if (!app->pkt_in(app, cp, pskb, &diff))
+ if (!app->pkt_in(app, cp, skb, &diff))
return 0;
/*
@@ -453,7 +454,7 @@ static inline int app_tcp_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb,
* called by ipvs packet handler, assumes previously checked cp!=NULL.
* returns false if can't handle packet (oom).
*/
-int ip_vs_app_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb)
+int ip_vs_app_pkt_in(struct ip_vs_conn *cp, struct sk_buff *skb)
{
struct ip_vs_app *app;
@@ -466,7 +467,7 @@ int ip_vs_app_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb)
/* TCP is complicated */
if (cp->protocol == IPPROTO_TCP)
- return app_tcp_pkt_in(cp, pskb, app);
+ return app_tcp_pkt_in(cp, skb, app);
/*
* Call private input hook function
@@ -474,7 +475,7 @@ int ip_vs_app_pkt_in(struct ip_vs_conn *cp, struct sk_buff **pskb)
if (app->pkt_in == NULL)
return 1;
- return app->pkt_in(app, cp, pskb, NULL);
+ return app->pkt_in(app, cp, skb, NULL);
}
diff --git a/net/ipv4/ipvs/ip_vs_core.c b/net/ipv4/ipvs/ip_vs_core.c
index fbca2a2ff29..c6ed7654e83 100644
--- a/net/ipv4/ipvs/ip_vs_core.c
+++ b/net/ipv4/ipvs/ip_vs_core.c
@@ -58,7 +58,6 @@ EXPORT_SYMBOL(ip_vs_conn_put);
#ifdef CONFIG_IP_VS_DEBUG
EXPORT_SYMBOL(ip_vs_get_debug_level);
#endif
-EXPORT_SYMBOL(ip_vs_make_skb_writable);
/* ID used in ICMP lookups */
@@ -163,42 +162,6 @@ ip_vs_set_state(struct ip_vs_conn *cp, int direction,
}
-int ip_vs_make_skb_writable(struct sk_buff **pskb, int writable_len)
-{
- struct sk_buff *skb = *pskb;
-
- /* skb is already used, better copy skb and its payload */
- if (unlikely(skb_shared(skb) || skb->sk))
- goto copy_skb;
-
- /* skb data is already used, copy it */
- if (unlikely(skb_cloned(skb)))
- goto copy_data;
-
- return pskb_may_pull(skb, writable_len);
-
- copy_data:
- if (unlikely(writable_len > skb->len))
- return 0;
- return !pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
-
- copy_skb:
- if (unlikely(writable_len > skb->len))
- return 0;
- skb = skb_copy(skb, GFP_ATOMIC);
- if (!skb)
- return 0;
- BUG_ON(skb_is_nonlinear(skb));
-
- /* Rest of kernel will get very unhappy if we pass it a
- suddenly-orphaned skbuff */
- if ((*pskb)->sk)
- skb_set_owner_w(skb, (*pskb)->sk);
- kfree_skb(*pskb);
- *pskb = skb;
- return 1;
-}
-
/*
* IPVS persistent scheduling function
* It creates a connection entry according to its template if exists,
@@ -525,12 +488,12 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
* for VS/NAT.
*/
static unsigned int ip_vs_post_routing(unsigned int hooknum,
- struct sk_buff **pskb,
+ struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
- if (!((*pskb)->ipvs_property))
+ if (!skb->ipvs_property)
return NF_ACCEPT;
/* The packet was sent from IPVS, exit this chain */
return NF_STOP;
@@ -541,13 +504,14 @@ __sum16 ip_vs_checksum_complete(struct sk_buff *skb, int offset)
return csum_fold(skb_checksum(skb, offset, skb->len - offset, 0));
}
-static inline struct sk_buff *
-ip_vs_gather_frags(struct sk_buff *skb, u_int32_t user)
+static inline int ip_vs_gather_frags(struct sk_buff *skb, u_int32_t user)
{
- skb = ip_defrag(skb, user);
- if (skb)
+ int err = ip_defrag(skb, user);
+
+ if (!err)
ip_send_check(ip_hdr(skb));
- return skb;
+
+ return err;
}
/*
@@ -605,9 +569,8 @@ void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
* Currently handles error types - unreachable, quench, ttl exceeded.
* (Only used in VS/NAT)
*/
-static int ip_vs_out_icmp(struct sk_buff **pskb, int *related)
+static int ip_vs_out_icmp(struct sk_buff *skb, int *related)
{
- struct sk_buff *skb = *pskb;
struct iphdr *iph;
struct icmphdr _icmph, *ic;
struct iphdr _ciph, *cih; /* The ip header contained within the ICMP */
@@ -619,10 +582,8 @@ static int ip_vs_out_icmp(struct sk_buff **pskb, int *related)
/* reassemble IP fragments */
if (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) {
- skb = ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT);
- if (!skb)
+ if (ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT))
return NF_STOLEN;
- *pskb = skb;
}
iph = ip_hdr(skb);
@@ -690,9 +651,8 @@ static int ip_vs_out_icmp(struct sk_buff **pskb, int *related)
if (IPPROTO_TCP == cih->protocol || IPPROTO_UDP == cih->protocol)
offset += 2 * sizeof(__u16);
- if (!ip_vs_make_skb_writable(pskb, offset))
+ if (!skb_make_writable(skb, offset))
goto out;
- skb = *pskb;
ip_vs_nat_icmp(skb, pp, cp, 1);
@@ -724,11 +684,10 @@ static inline int is_tcp_reset(const struct sk_buff *skb)
* rewrite addresses of the packet and send it on its way...
*/
static unsigned int
-ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
+ip_vs_out(unsigned int hooknum, struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
- struct sk_buff *skb = *pskb;
struct iphdr *iph;
struct ip_vs_protocol *pp;
struct ip_vs_conn *cp;
@@ -741,11 +700,10 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
iph = ip_hdr(skb);
if (unlikely(iph->protocol == IPPROTO_ICMP)) {
- int related, verdict = ip_vs_out_icmp(pskb, &related);
+ int related, verdict = ip_vs_out_icmp(skb, &related);
if (related)
return verdict;
- skb = *pskb;
iph = ip_hdr(skb);
}
@@ -756,11 +714,9 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
/* reassemble IP fragments */
if (unlikely(iph->frag_off & htons(IP_MF|IP_OFFSET) &&
!pp->dont_defrag)) {
- skb = ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT);
- if (!skb)
+ if (ip_vs_gather_frags(skb, IP_DEFRAG_VS_OUT))
return NF_STOLEN;
iph = ip_hdr(skb);
- *pskb = skb;
}
ihl = iph->ihl << 2;
@@ -802,13 +758,12 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
IP_VS_DBG_PKT(11, pp, skb, 0, "Outgoing packet");
- if (!ip_vs_make_skb_writable(pskb, ihl))
+ if (!skb_make_writable(skb, ihl))
goto drop;
/* mangle the packet */
- if (pp->snat_handler && !pp->snat_handler(pskb, pp, cp))
+ if (pp->snat_handler && !pp->snat_handler(skb, pp, cp))
goto drop;
- skb = *pskb;
ip_hdr(skb)->saddr = cp->vaddr;
ip_send_check(ip_hdr(skb));
@@ -818,9 +773,8 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
* if it came from this machine itself. So re-compute
* the routing information.
*/
- if (ip_route_me_harder(pskb, RTN_LOCAL) != 0)
+ if (ip_route_me_harder(skb, RTN_LOCAL) != 0)
goto drop;
- skb = *pskb;
IP_VS_DBG_PKT(10, pp, skb, 0, "After SNAT");
@@ -835,7 +789,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
drop:
ip_vs_conn_put(cp);
- kfree_skb(*pskb);
+ kfree_skb(skb);
return NF_STOLEN;
}
@@ -847,9 +801,8 @@ ip_vs_out(unsigned int hooknum, struct sk_buff **pskb,
* Currently handles error types - unreachable, quench, ttl exceeded.
*/
static int
-ip_vs_in_icmp(struct sk_buff **pskb, int *related, unsigned int hooknum)
+ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum)
{
- struct sk_buff *skb = *pskb;
struct iphdr *iph;
struct icmphdr _icmph, *ic;
struct iphdr _ciph, *cih; /* The ip header contained within the ICMP */
@@ -861,12 +814,9 @@ ip_vs_in_icmp(struct sk_buff **pskb, int *related, unsigned int hooknum)
/* reassemble IP fragments */
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);
- if (!skb)
+ if (ip_vs_gather_frags(skb, hooknum == NF_IP_LOCAL_IN ?
+ IP_DEFRAG_VS_IN : IP_DEFRAG_VS_FWD))
return NF_STOLEN;
- *pskb = skb;
}
iph = ip_hdr(skb);
@@ -945,11 +895,10 @@ ip_vs_in_icmp(struct sk_buff **pskb, int *related, unsigned int hooknum)
* and send it on its way...
*/
static unsigned int
-ip_vs_in(unsigned int hooknum, struct sk_buff **pskb,
+ip_vs_in(unsigned int hooknum, struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
- struct sk_buff *skb = *pskb;
struct iphdr *iph;
struct ip_vs_protocol *pp;
struct ip_vs_conn *cp;
@@ -971,11 +920,10 @@ ip_vs_in(unsigned int hooknum, struct sk_buff **pskb,
iph = ip_hdr(skb);
if (unlikely(iph->protocol == IPPROTO_ICMP)) {
- int related, verdict = ip_vs_in_icmp(pskb, &related, hooknum);
+ int related, verdict = ip_vs_in_icmp(skb, &related, hooknum);
if (related)
return verdict;
- skb = *pskb;
iph = ip_hdr(skb);
}
@@ -1056,16 +1004,16 @@ ip_vs_in(unsigned int hooknum, struct sk_buff **pskb,
* and send them to ip_vs_in_icmp.
*/
static unsigned int
-ip_vs_forward_icmp(unsigned int hooknum, struct sk_buff **pskb,
+ip_vs_forward_icmp(unsigned int hooknum, struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
int r;
- if (ip_hdr(*pskb)->protocol != IPPROTO_ICMP)
+ if (ip_hdr(skb)->protocol != IPPROTO_ICMP)
return NF_ACCEPT;
- return ip_vs_in_icmp(pskb, &r, hooknum);
+ return ip_vs_in_icmp(skb, &r, hooknum);
}
diff --git a/net/ipv4/ipvs/ip_vs_ftp.c b/net/ipv4/ipvs/ip_vs_ftp.c
index 344ddbbdc75..59aa166b767 100644
--- a/net/ipv4/ipvs/ip_vs_ftp.c
+++ b/net/ipv4/ipvs/ip_vs_ftp.c
@@ -30,6 +30,7 @@
#include <linux/skbuff.h>
#include <linux/in.h>
#include <linux/ip.h>
+#include <linux/netfilter.h>
#include <net/protocol.h>
#include <net/tcp.h>
#include <asm/unaligned.h>
@@ -135,7 +136,7 @@ static int ip_vs_ftp_get_addrport(char *data, char *data_limit,
* xxx,xxx,xxx,xxx is the server address, ppp,ppp is the server port number.
*/
static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
- struct sk_buff **pskb, int *diff)
+ struct sk_buff *skb, int *diff)
{
struct iphdr *iph;
struct tcphdr *th;
@@ -155,14 +156,14 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
return 1;
/* Linear packets are much easier to deal with. */
- if (!ip_vs_make_skb_writable(pskb, (*pskb)->len))
+ if (!skb_make_writable(skb, skb->len))
return 0;
if (cp->app_data == &ip_vs_ftp_pasv) {
- iph = ip_hdr(*pskb);
+ iph = ip_hdr(skb);
th = (struct tcphdr *)&(((char *)iph)[iph->ihl*4]);
data = (char *)th + (th->doff << 2);
- data_limit = skb_tail_pointer(*pskb);
+ data_limit = skb_tail_pointer(skb);
if (ip_vs_ftp_get_addrport(data, data_limit,
SERVER_STRING,
@@ -213,7 +214,7 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
memcpy(start, buf, buf_len);
ret = 1;
} else {
- ret = !ip_vs_skb_replace(*pskb, GFP_ATOMIC, start,
+ ret = !ip_vs_skb_replace(skb, GFP_ATOMIC, start,
end-start, buf, buf_len);
}
@@ -238,7 +239,7 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
* the client.
*/
static int ip_vs_ftp_in(struct ip_vs_app *app, struct ip_vs_conn *cp,
- struct sk_buff **pskb, int *diff)
+ struct sk_buff *skb, int *diff)
{
struct iphdr *iph;
struct tcphdr *th;
@@ -256,20 +257,20 @@ static int ip_vs_ftp_in(struct ip_vs_app *app, struct ip_vs_conn *cp,
return 1;
/* Linear packets are much easier to deal with. */
- if (!ip_vs_make_skb_writable(pskb, (*pskb)->len))
+ if (!skb_make_writable(skb, skb->len))
return 0;
/*
* Detecting whether it is passive
*/
- iph = ip_hdr(*pskb);
+ iph = ip_hdr(skb);
th = (struct tcphdr *)&(((char *)iph)[iph->ihl*4]);
/* Since there may be OPTIONS in the TCP packet and the HLEN is
the length of the header in 32-bit multiples, it is accurate
to calculate data address by th+HLEN*4 */
data = data_start = (char *)th + (th->doff << 2);
- data_limit = skb_tail_pointer(*pskb);
+ data_limit = skb_tail_pointer(skb);
while (data <= data_limit - 6) {
if (strnicmp(data, "PASV\r\n", 6) == 0) {
diff --git a/net/ipv4/ipvs/ip_vs_proto_tcp.c b/net/ipv4/ipvs/ip_vs_proto_tcp.c
index e65577a7700..12dc0d640b6 100644
--- a/net/ipv4/ipvs/ip_vs_proto_tcp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_tcp.c
@@ -20,6 +20,7 @@
#include <linux/tcp.h> /* for tcphdr */
#include <net/ip.h>
#include <net/tcp.h> /* for csum_tcpudp_magic */
+#include <linux/netfilter.h>
#include <linux/netfilter_ipv4.h>
#include <net/ip_vs.h>
@@ -122,27 +123,27 @@ tcp_fast_csum_update(struct tcphdr *tcph, __be32 oldip, __be32 newip,
static int
-tcp_snat_handler(struct sk_buff **pskb,
+tcp_snat_handler(struct sk_buff *skb,
struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
{
struct tcphdr *tcph;
- const unsigned int tcphoff = ip_hdrlen(*pskb);
+ const unsigned int tcphoff = ip_hdrlen(skb);
/* csum_check requires unshared skb */
- if (!ip_vs_make_skb_writable(pskb, tcphoff+sizeof(*tcph)))
+ if (!skb_make_writable(skb, tcphoff+sizeof(*tcph)))
return 0;
if (unlikely(cp->app != NULL)) {
/* Some checks before mangling */
- if (pp->csum_check && !pp->csum_check(*pskb, pp))
+ if (pp->csum_check && !pp->csum_check(skb, pp))
return 0;
/* Call application helper if needed */
- if (!ip_vs_app_pkt_out(cp, pskb))
+ if (!ip_vs_app_pkt_out(cp, skb))
return 0;
}
- tcph = (void *)ip_hdr(*pskb) + tcphoff;
+ tcph = (void *)ip_hdr(skb) + tcphoff;
tcph->source = cp->vport;
/* Adjust TCP checksums */
@@ -150,17 +151,15 @@ tcp_snat_handler(struct sk_buff **pskb,
/* Only port and addr are changed, do fast csum update */
tcp_fast_csum_update(tcph, cp->daddr, cp->vaddr,
cp->dport, cp->vport);
- if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
- (*pskb)->ip_summed = CHECKSUM_NONE;
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->ip_summed = CHECKSUM_NONE;
} else {
/* full checksum calculation */
tcph->check = 0;
- (*pskb)->csum = skb_checksum(*pskb, tcphoff,
- (*pskb)->len - tcphoff, 0);
+ skb->csum = skb_checksum(skb, tcphoff, skb->len - tcphoff, 0);
tcph->check = csum_tcpudp_magic(cp->vaddr, cp->caddr,
- (*pskb)->len - tcphoff,
- cp->protocol,
- (*pskb)->csum);
+ skb->len - tcphoff,
+ cp->protocol, skb->csum);
IP_VS_DBG(11, "O-pkt: %s O-csum=%d (+%zd)\n",
pp->name, tcph->check,
(char*)&(tcph->check) - (char*)tcph);
@@ -170,30 +169,30 @@ tcp_snat_handler(struct sk_buff **pskb,
static int
-tcp_dnat_handler(struct sk_buff **pskb,
+tcp_dnat_handler(struct sk_buff *skb,
struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
{
struct tcphdr *tcph;
- const unsigned int tcphoff = ip_hdrlen(*pskb);
+ const unsigned int tcphoff = ip_hdrlen(skb);
/* csum_check requires unshared skb */
- if (!ip_vs_make_skb_writable(pskb, tcphoff+sizeof(*tcph)))
+ if (!skb_make_writable(skb, tcphoff+sizeof(*tcph)))
return 0;
if (unlikely(cp->app != NULL)) {
/* Some checks before mangling */
- if (pp->csum_check && !pp->csum_check(*pskb, pp))
+ if (pp->csum_check && !pp->csum_check(skb, pp))
return 0;
/*
* Attempt ip_vs_app call.
* It will fix ip_vs_conn and iph ack_seq stuff
*/
- if (!ip_vs_app_pkt_in(cp, pskb))
+ if (!ip_vs_app_pkt_in(cp, skb))
return 0;
}
- tcph = (void *)ip_hdr(*pskb) + tcphoff;
+ tcph = (void *)ip_hdr(skb) + tcphoff;
tcph->dest = cp->dport;
/*
@@ -203,18 +202,16 @@ tcp_dnat_handler(struct sk_buff **pskb,
/* Only port and addr are changed, do fast csum update */
tcp_fast_csum_update(tcph, cp->vaddr, cp->daddr,
cp->vport, cp->dport);
- if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
- (*pskb)->ip_summed = CHECKSUM_NONE;
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->ip_summed = CHECKSUM_NONE;
} else {
/* full checksum calculation */
tcph->check = 0;
- (*pskb)->csum = skb_checksum(*pskb, tcphoff,
- (*pskb)->len - tcphoff, 0);
+ skb->csum = skb_checksum(skb, tcphoff, skb->len - tcphoff, 0);
tcph->check = csum_tcpudp_magic(cp->caddr, cp->daddr,
- (*pskb)->len - tcphoff,
- cp->protocol,
- (*pskb)->csum);
- (*pskb)->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->len - tcphoff,
+ cp->protocol, skb->csum);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
}
return 1;
}
diff --git a/net/ipv4/ipvs/ip_vs_proto_udp.c b/net/ipv4/ipvs/ip_vs_proto_udp.c
index 8ee5fe6a101..1fa7b330b9a 100644
--- a/net/ipv4/ipvs/ip_vs_proto_udp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_udp.c
@@ -18,6 +18,7 @@
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/kernel.h>
+#include <linux/netfilter.h>
#include <linux/netfilter_ipv4.h>
#include <linux/udp.h>
@@ -129,29 +130,29 @@ udp_fast_csum_update(struct udphdr *uhdr, __be32 oldip, __be32 newip,
}
static int
-udp_snat_handler(struct sk_buff **pskb,
+udp_snat_handler(struct sk_buff *skb,
struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
{
struct udphdr *udph;
- const unsigned int udphoff = ip_hdrlen(*pskb);
+ const unsigned int udphoff = ip_hdrlen(skb);
/* csum_check requires unshared skb */
- if (!ip_vs_make_skb_writable(pskb, udphoff+sizeof(*udph)))
+ if (!skb_make_writable(skb, udphoff+sizeof(*udph)))
return 0;
if (unlikely(cp->app != NULL)) {
/* Some checks before mangling */
- if (pp->csum_check && !pp->csum_check(*pskb, pp))
+ if (pp->csum_check && !pp->csum_check(skb, pp))
return 0;
/*
* Call application helper if needed
*/
- if (!ip_vs_app_pkt_out(cp, pskb))
+ if (!ip_vs_app_pkt_out(cp, skb))
return 0;
}
- udph = (void *)ip_hdr(*pskb) + udphoff;
+ udph = (void *)ip_hdr(skb) + udphoff;
udph->source = cp->vport;
/*
@@ -161,17 +162,15 @@ udp_snat_handler(struct sk_buff **pskb,
/* Only port and addr are changed, do fast csum update */
udp_fast_csum_update(udph, cp->daddr, cp->vaddr,
cp->dport, cp->vport);
- if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
- (*pskb)->ip_summed = CHECKSUM_NONE;
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->ip_summed = CHECKSUM_NONE;
} else {
/* full checksum calculation */
udph->check = 0;
- (*pskb)->csum = skb_checksum(*pskb, udphoff,
- (*pskb)->len - udphoff, 0);
+ skb->csum = skb_checksum(skb, udphoff, skb->len - udphoff, 0);
udph->check = csum_tcpudp_magic(cp->vaddr, cp->caddr,
- (*pskb)->len - udphoff,
- cp->protocol,
- (*pskb)->csum);
+ skb->len - udphoff,
+ cp->protocol, skb->csum);
if (udph->check == 0)
udph->check = CSUM_MANGLED_0;
IP_VS_DBG(11, "O-pkt: %s O-csum=%d (+%zd)\n",
@@ -183,30 +182,30 @@ udp_snat_handler(struct sk_buff **pskb,
static int
-udp_dnat_handler(struct sk_buff **pskb,
+udp_dnat_handler(struct sk_buff *skb,
struct ip_vs_protocol *pp, struct ip_vs_conn *cp)
{
struct udphdr *udph;
- unsigned int udphoff = ip_hdrlen(*pskb);
+ unsigned int udphoff = ip_hdrlen(skb);
/* csum_check requires unshared skb */
- if (!ip_vs_make_skb_writable(pskb, udphoff+sizeof(*udph)))
+ if (!skb_make_writable(skb, udphoff+sizeof(*udph)))
return 0;
if (unlikely(cp->app != NULL)) {
/* Some checks before mangling */
- if (pp->csum_check && !pp->csum_check(*pskb, pp))
+ if (pp->csum_check && !pp->csum_check(skb, pp))
return 0;
/*
* Attempt ip_vs_app call.
* It will fix ip_vs_conn
*/
- if (!ip_vs_app_pkt_in(cp, pskb))
+ if (!ip_vs_app_pkt_in(cp, skb))
return 0;
}
- udph = (void *)ip_hdr(*pskb) + udphoff;
+ udph = (void *)ip_hdr(skb) + udphoff;
udph->dest = cp->dport;
/*
@@ -216,20 +215,18 @@ udp_dnat_handler(struct sk_buff **pskb,
/* Only port and addr are changed, do fast csum update */
udp_fast_csum_update(udph, cp->vaddr, cp->daddr,
cp->vport, cp->dport);
- if ((*pskb)->ip_summed == CHECKSUM_COMPLETE)
- (*pskb)->ip_summed = CHECKSUM_NONE;
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->ip_summed = CHECKSUM_NONE;
} else {
/* full checksum calculation */
udph->check = 0;
- (*pskb)->csum = skb_checksum(*pskb, udphoff,
- (*pskb)->len - udphoff, 0);
+ skb->csum = skb_checksum(skb, udphoff, skb->len - udphoff, 0);
udph->check = csum_tcpudp_magic(cp->caddr, cp->daddr,
- (*pskb)->len - udphoff,
- cp->protocol,
- (*pskb)->csum);
+ skb->len - udphoff,
+ cp->protocol, skb->csum);
if (udph->check == 0)
udph->check = CSUM_MANGLED_0;
- (*pskb)->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
}
return 1;
}
diff --git a/net/ipv4/ipvs/ip_vs_xmit.c b/net/ipv4/ipvs/ip_vs_xmit.c
index 666e080a74a..d0a92dec105 100644
--- a/net/ipv4/ipvs/ip_vs_xmit.c
+++ b/net/ipv4/ipvs/ip_vs_xmit.c
@@ -253,7 +253,7 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
}
/* copy-on-write the packet before mangling it */
- if (!ip_vs_make_skb_writable(&skb, sizeof(struct iphdr)))
+ if (!skb_make_writable(skb, sizeof(struct iphdr)))
goto tx_error_put;
if (skb_cow(skb, rt->u.dst.dev->hard_header_len))
@@ -264,7 +264,7 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
skb->dst = &rt->u.dst;
/* mangle the packet */
- if (pp->dnat_handler && !pp->dnat_handler(&skb, pp, cp))
+ if (pp->dnat_handler && !pp->dnat_handler(skb, pp, cp))
goto tx_error;
ip_hdr(skb)->daddr = cp->daddr;
ip_send_check(ip_hdr(skb));
@@ -529,7 +529,7 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
}
/* copy-on-write the packet before mangling it */
- if (!ip_vs_make_skb_writable(&skb, offset))
+ if (!skb_make_writable(skb, offset))
goto tx_error_put;
if (skb_cow(skb, rt->u.dst.dev->hard_header_len))
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-25 02:34:45 +0000