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ipvs: provide address family for debugging

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As skb->protocol is not valid in LOCAL_OUT add
parameter for address family in packet debugging functions.
Even if ports are not present in AH and ESP change them to
use ip_vs_tcpudp_debug_packet to show at least valid addresses
as before. This patch removes the last user of skb->protocol
in IPVS.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
Julian Anastasov 2010-10-17 16:46:17 +03:00 committed by Simon Horman
parent 3233759be7
commit 0d79641a96
8 changed files with 54 additions and 92 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
include/net/ip_vs.h
View file

@ -136,24 +136,24 @@ static inline const char *ip_vs_dbg_addr(int af, char *buf, size_t buf_len,
if (net_ratelimit()) \
printk(KERN_DEBUG pr_fmt(msg), ##__VA_ARGS__); \
} while (0)
#define IP_VS_DBG_PKT(level, pp, skb, ofs, msg) \
#define IP_VS_DBG_PKT(level, af, pp, skb, ofs, msg) \
do { \
if (level <= ip_vs_get_debug_level()) \
pp->debug_packet(pp, skb, ofs, msg); \
pp->debug_packet(af, pp, skb, ofs, msg); \
} while (0)
#define IP_VS_DBG_RL_PKT(level, pp, skb, ofs, msg) \
#define IP_VS_DBG_RL_PKT(level, af, pp, skb, ofs, msg) \
do { \
if (level <= ip_vs_get_debug_level() && \
net_ratelimit()) \
pp->debug_packet(pp, skb, ofs, msg); \
pp->debug_packet(af, pp, skb, ofs, msg); \
} while (0)
#else /* NO DEBUGGING at ALL */
#define IP_VS_DBG_BUF(level, msg...) do {} while (0)
#define IP_VS_ERR_BUF(msg...) do {} while (0)
#define IP_VS_DBG(level, msg...) do {} while (0)
#define IP_VS_DBG_RL(msg...) do {} while (0)
#define IP_VS_DBG_PKT(level, pp, skb, ofs, msg) do {} while (0)
#define IP_VS_DBG_RL_PKT(level, pp, skb, ofs, msg) do {} while (0)
#define IP_VS_DBG_PKT(level, af, pp, skb, ofs, msg) do {} while (0)
#define IP_VS_DBG_RL_PKT(level, af, pp, skb, ofs, msg) do {} while (0)
#endif
#define IP_VS_BUG() BUG()
@ -345,7 +345,7 @@ struct ip_vs_protocol {
int (*app_conn_bind)(struct ip_vs_conn *cp);
void (*debug_packet)(struct ip_vs_protocol *pp,
void (*debug_packet)(int af, struct ip_vs_protocol *pp,
const struct sk_buff *skb,
int offset,
const char *msg);
@ -828,7 +828,8 @@ extern int
ip_vs_set_state_timeout(int *table, int num, const char *const *names,
const char *name, int to);
extern void
ip_vs_tcpudp_debug_packet(struct ip_vs_protocol *pp, const struct sk_buff *skb,
ip_vs_tcpudp_debug_packet(int af, struct ip_vs_protocol *pp,
const struct sk_buff *skb,
int offset, const char *msg);
extern struct ip_vs_protocol ip_vs_protocol_tcp;

41
net/netfilter/ipvs/ip_vs_core.c
View file

@ -365,7 +365,8 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb,
* with persistence the connection is created on SYN+ACK.
*/
if (pptr[0] == FTPDATA) {
IP_VS_DBG_PKT(12, pp, skb, 0, "Not scheduling FTPDATA");
IP_VS_DBG_PKT(12, svc->af, pp, skb, 0,
"Not scheduling FTPDATA");
return NULL;
}
@ -376,7 +377,7 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb,
if ((!skb->dev || skb->dev->flags & IFF_LOOPBACK) &&
(svc->flags & IP_VS_SVC_F_PERSISTENT || svc->fwmark) &&
(cp = pp->conn_in_get(svc->af, skb, pp, &iph, iph.len, 1))) {
IP_VS_DBG_PKT(12, pp, skb, 0,
IP_VS_DBG_PKT(12, svc->af, pp, skb, 0,
"Not scheduling reply for existing connection");
__ip_vs_conn_put(cp);
return NULL;
@ -617,10 +618,10 @@ void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
skb->ip_summed = CHECKSUM_UNNECESSARY;
if (inout)
IP_VS_DBG_PKT(11, pp, skb, (void *)ciph - (void *)iph,
IP_VS_DBG_PKT(11, AF_INET, pp, skb, (void *)ciph - (void *)iph,
"Forwarding altered outgoing ICMP");
else
IP_VS_DBG_PKT(11, pp, skb, (void *)ciph - (void *)iph,
IP_VS_DBG_PKT(11, AF_INET, pp, skb, (void *)ciph - (void *)iph,
"Forwarding altered incoming ICMP");
}
@ -662,11 +663,13 @@ void ip_vs_nat_icmp_v6(struct sk_buff *skb, struct ip_vs_protocol *pp,
skb->ip_summed = CHECKSUM_PARTIAL;
if (inout)
IP_VS_DBG_PKT(11, pp, skb, (void *)ciph - (void *)iph,
"Forwarding altered outgoing ICMPv6");
IP_VS_DBG_PKT(11, AF_INET6, pp, skb,
(void *)ciph - (void *)iph,
"Forwarding altered outgoing ICMPv6");
else
IP_VS_DBG_PKT(11, pp, skb, (void *)ciph - (void *)iph,
"Forwarding altered incoming ICMPv6");
IP_VS_DBG_PKT(11, AF_INET6, pp, skb,
(void *)ciph - (void *)iph,
"Forwarding altered incoming ICMPv6");
}
#endif
@ -798,7 +801,8 @@ static int ip_vs_out_icmp(struct sk_buff *skb, int *related,
pp->dont_defrag))
return NF_ACCEPT;
IP_VS_DBG_PKT(11, pp, skb, offset, "Checking outgoing ICMP for");
IP_VS_DBG_PKT(11, AF_INET, pp, skb, offset,
"Checking outgoing ICMP for");
offset += cih->ihl * 4;
@ -874,7 +878,8 @@ static int ip_vs_out_icmp_v6(struct sk_buff *skb, int *related,
if (unlikely(cih->nexthdr == IPPROTO_FRAGMENT && pp->dont_defrag))
return NF_ACCEPT;
IP_VS_DBG_PKT(11, pp, skb, offset, "Checking outgoing ICMPv6 for");
IP_VS_DBG_PKT(11, AF_INET6, pp, skb, offset,
"Checking outgoing ICMPv6 for");
offset += sizeof(struct ipv6hdr);
@ -922,7 +927,7 @@ static unsigned int
handle_response(int af, struct sk_buff *skb, struct ip_vs_protocol *pp,
struct ip_vs_conn *cp, int ihl)
{
IP_VS_DBG_PKT(11, pp, skb, 0, "Outgoing packet");
IP_VS_DBG_PKT(11, af, pp, skb, 0, "Outgoing packet");
if (!skb_make_writable(skb, ihl))
goto drop;
@ -967,7 +972,7 @@ handle_response(int af, struct sk_buff *skb, struct ip_vs_protocol *pp,
ip_route_me_harder(skb, RTN_LOCAL) != 0)
goto drop;
IP_VS_DBG_PKT(10, pp, skb, 0, "After SNAT");
IP_VS_DBG_PKT(10, af, pp, skb, 0, "After SNAT");
ip_vs_out_stats(cp, skb);
ip_vs_set_state(cp, IP_VS_DIR_OUTPUT, skb, pp);
@ -1117,7 +1122,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb, int af)
}
}
}
IP_VS_DBG_PKT(12, pp, skb, 0,
IP_VS_DBG_PKT(12, af, pp, skb, 0,
"ip_vs_out: packet continues traversal as normal");
return NF_ACCEPT;
}
@ -1253,7 +1258,8 @@ ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum)
pp->dont_defrag))
return NF_ACCEPT;
IP_VS_DBG_PKT(11, pp, skb, offset, "Checking incoming ICMP for");
IP_VS_DBG_PKT(11, AF_INET, pp, skb, offset,
"Checking incoming ICMP for");
offset += cih->ihl * 4;
@ -1364,7 +1370,8 @@ ip_vs_in_icmp_v6(struct sk_buff *skb, int *related, unsigned int hooknum)
if (unlikely(cih->nexthdr == IPPROTO_FRAGMENT && pp->dont_defrag))
return NF_ACCEPT;
IP_VS_DBG_PKT(11, pp, skb, offset, "Checking incoming ICMPv6 for");
IP_VS_DBG_PKT(11, AF_INET6, pp, skb, offset,
"Checking incoming ICMPv6 for");
offset += sizeof(struct ipv6hdr);
@ -1492,12 +1499,12 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
if (unlikely(!cp)) {
/* sorry, all this trouble for a no-hit :) */
IP_VS_DBG_PKT(12, pp, skb, 0,
IP_VS_DBG_PKT(12, af, pp, skb, 0,
"ip_vs_in: packet continues traversal as normal");
return NF_ACCEPT;
}
IP_VS_DBG_PKT(11, pp, skb, 0, "Incoming packet");
IP_VS_DBG_PKT(11, af, pp, skb, 0, "Incoming packet");
/* Check the server status */
if (cp->dest && !(cp->dest->flags & IP_VS_DEST_F_AVAILABLE)) {

8
net/netfilter/ipvs/ip_vs_proto.c
View file

@ -172,8 +172,8 @@ ip_vs_tcpudp_debug_packet_v4(struct ip_vs_protocol *pp,
else if (ih->frag_off & htons(IP_OFFSET))
sprintf(buf, "%pI4->%pI4 frag", &ih->saddr, &ih->daddr);
else {
__be16 _ports[2], *pptr
;
__be16 _ports[2], *pptr;
pptr = skb_header_pointer(skb, offset + ih->ihl*4,
sizeof(_ports), _ports);
if (pptr == NULL)
@ -223,13 +223,13 @@ ip_vs_tcpudp_debug_packet_v6(struct ip_vs_protocol *pp,
void
ip_vs_tcpudp_debug_packet(struct ip_vs_protocol *pp,
ip_vs_tcpudp_debug_packet(int af, struct ip_vs_protocol *pp,
const struct sk_buff *skb,
int offset,
const char *msg)
{
#ifdef CONFIG_IP_VS_IPV6
if (skb->protocol == htons(ETH_P_IPV6))
if (af == AF_INET6)
ip_vs_tcpudp_debug_packet_v6(pp, skb, offset, msg);
else
#endif

52
net/netfilter/ipvs/ip_vs_proto_ah_esp.c
View file

@ -117,54 +117,6 @@ ah_esp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_protocol *pp,
return 0;
}
static void
ah_esp_debug_packet_v4(struct ip_vs_protocol *pp, const struct sk_buff *skb,
int offset, const char *msg)
{
char buf[256];
struct iphdr _iph, *ih;
ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
if (ih == NULL)
sprintf(buf, "TRUNCATED");
else
sprintf(buf, "%pI4->%pI4", &ih->saddr, &ih->daddr);
pr_debug("%s: %s %s\n", msg, pp->name, buf);
}
#ifdef CONFIG_IP_VS_IPV6
static void
ah_esp_debug_packet_v6(struct ip_vs_protocol *pp, const struct sk_buff *skb,
int offset, const char *msg)
{
char buf[256];
struct ipv6hdr _iph, *ih;
ih = skb_header_pointer(skb, offset, sizeof(_iph), &_iph);
if (ih == NULL)
sprintf(buf, "TRUNCATED");
else
sprintf(buf, "%pI6->%pI6", &ih->saddr, &ih->daddr);
pr_debug("%s: %s %s\n", msg, pp->name, buf);
}
#endif
static void
ah_esp_debug_packet(struct ip_vs_protocol *pp, const struct sk_buff *skb,
int offset, const char *msg)
{
#ifdef CONFIG_IP_VS_IPV6
if (skb->protocol == htons(ETH_P_IPV6))
ah_esp_debug_packet_v6(pp, skb, offset, msg);
else
#endif
ah_esp_debug_packet_v4(pp, skb, offset, msg);
}
static void ah_esp_init(struct ip_vs_protocol *pp)
{
/* nothing to do now */
@ -195,7 +147,7 @@ struct ip_vs_protocol ip_vs_protocol_ah = {
.register_app = NULL,
.unregister_app = NULL,
.app_conn_bind = NULL,
.debug_packet = ah_esp_debug_packet,
.debug_packet = ip_vs_tcpudp_debug_packet,
.timeout_change = NULL, /* ISAKMP */
.set_state_timeout = NULL,
};
@ -219,7 +171,7 @@ struct ip_vs_protocol ip_vs_protocol_esp = {
.register_app = NULL,
.unregister_app = NULL,
.app_conn_bind = NULL,
.debug_packet = ah_esp_debug_packet,
.debug_packet = ip_vs_tcpudp_debug_packet,
.timeout_change = NULL, /* ISAKMP */
};
#endif

2
net/netfilter/ipvs/ip_vs_proto_sctp.c
View file

@ -176,7 +176,7 @@ sctp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp)
if (val != cmp) {
/* CRC failure, dump it. */
IP_VS_DBG_RL_PKT(0, pp, skb, 0,
IP_VS_DBG_RL_PKT(0, af, pp, skb, 0,
"Failed checksum for");
return 0;
}

4
net/netfilter/ipvs/ip_vs_proto_tcp.c
View file

@ -300,7 +300,7 @@ tcp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp)
skb->len - tcphoff,
ipv6_hdr(skb)->nexthdr,
skb->csum)) {
IP_VS_DBG_RL_PKT(0, pp, skb, 0,
IP_VS_DBG_RL_PKT(0, af, pp, skb, 0,
"Failed checksum for");
return 0;
}
@ -311,7 +311,7 @@ tcp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp)
skb->len - tcphoff,
ip_hdr(skb)->protocol,
skb->csum)) {
IP_VS_DBG_RL_PKT(0, pp, skb, 0,
IP_VS_DBG_RL_PKT(0, af, pp, skb, 0,
"Failed checksum for");
return 0;
}

4
net/netfilter/ipvs/ip_vs_proto_udp.c
View file

@ -314,7 +314,7 @@ udp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp)
skb->len - udphoff,
ipv6_hdr(skb)->nexthdr,
skb->csum)) {
IP_VS_DBG_RL_PKT(0, pp, skb, 0,
IP_VS_DBG_RL_PKT(0, af, pp, skb, 0,
"Failed checksum for");
return 0;
}
@ -325,7 +325,7 @@ udp_csum_check(int af, struct sk_buff *skb, struct ip_vs_protocol *pp)
skb->len - udphoff,
ip_hdr(skb)->protocol,
skb->csum)) {
IP_VS_DBG_RL_PKT(0, pp, skb, 0,
IP_VS_DBG_RL_PKT(0, af, pp, skb, 0,
"Failed checksum for");
return 0;
}

18
net/netfilter/ipvs/ip_vs_xmit.c
View file

@ -543,7 +543,8 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
struct nf_conn *ct = ct = nf_ct_get(skb, &ctinfo);
if (ct && !nf_ct_is_untracked(ct)) {
IP_VS_DBG_RL_PKT(10, pp, skb, 0, "ip_vs_nat_xmit(): "
IP_VS_DBG_RL_PKT(10, AF_INET, pp, skb, 0,
"ip_vs_nat_xmit(): "
"stopping DNAT to local address");
goto tx_error_put;
}
@ -552,7 +553,7 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
/* From world but DNAT to loopback address? */
if (local && ipv4_is_loopback(rt->rt_dst) && skb_rtable(skb)->fl.iif) {
IP_VS_DBG_RL_PKT(1, pp, skb, 0, "ip_vs_nat_xmit(): "
IP_VS_DBG_RL_PKT(1, AF_INET, pp, skb, 0, "ip_vs_nat_xmit(): "
"stopping DNAT to loopback address");
goto tx_error_put;
}
@ -561,7 +562,8 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
mtu = dst_mtu(&rt->dst);
if ((skb->len > mtu) && (iph->frag_off & htons(IP_DF))) {
icmp_send(skb, ICMP_DEST_UNREACH,ICMP_FRAG_NEEDED, htonl(mtu));
IP_VS_DBG_RL_PKT(0, pp, skb, 0, "ip_vs_nat_xmit(): frag needed for");
IP_VS_DBG_RL_PKT(0, AF_INET, pp, skb, 0,
"ip_vs_nat_xmit(): frag needed for");
goto tx_error_put;
}
@ -593,7 +595,7 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
goto tx_error;
}
IP_VS_DBG_PKT(10, pp, skb, 0, "After DNAT");
IP_VS_DBG_PKT(10, AF_INET, pp, skb, 0, "After DNAT");
/* FIXME: when application helper enlarges the packet and the length
is larger than the MTU of outgoing device, there will be still
@ -654,7 +656,7 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
struct nf_conn *ct = ct = nf_ct_get(skb, &ctinfo);
if (ct && !nf_ct_is_untracked(ct)) {
IP_VS_DBG_RL_PKT(10, pp, skb, 0,
IP_VS_DBG_RL_PKT(10, AF_INET6, pp, skb, 0,
"ip_vs_nat_xmit_v6(): "
"stopping DNAT to local address");
goto tx_error_put;
@ -665,7 +667,7 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
/* From world but DNAT to loopback address? */
if (local && skb->dev && !(skb->dev->flags & IFF_LOOPBACK) &&
ipv6_addr_type(&rt->rt6i_dst.addr) & IPV6_ADDR_LOOPBACK) {
IP_VS_DBG_RL_PKT(1, pp, skb, 0,
IP_VS_DBG_RL_PKT(1, AF_INET6, pp, skb, 0,
"ip_vs_nat_xmit_v6(): "
"stopping DNAT to loopback address");
goto tx_error_put;
@ -680,7 +682,7 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
skb->dev = net->loopback_dev;
}
icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
IP_VS_DBG_RL_PKT(0, pp, skb, 0,
IP_VS_DBG_RL_PKT(0, AF_INET6, pp, skb, 0,
"ip_vs_nat_xmit_v6(): frag needed for");
goto tx_error_put;
}
@ -706,7 +708,7 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
dst_release(&rt->dst);
}
IP_VS_DBG_PKT(10, pp, skb, 0, "After DNAT");
IP_VS_DBG_PKT(10, AF_INET6, pp, skb, 0, "After DNAT");
/* FIXME: when application helper enlarges the packet and the length
is larger than the MTU of outgoing device, there will be still