Remove EnterFunction and LeaveFunction.
These debugging macros seem well past their use-by date. And seem to
have little value these days. Removing them allows some trivial cleanup
of some exit paths for some functions. These are also included in this
patch. There is likely scope for further cleanup of both debugging and
unwind paths. But let's leave that for another day.
Only intended to change debug output, and only when CONFIG_IP_VS_DEBUG
is enabled. Compile tested only.
Signed-off-by: Simon Horman <horms@kernel.org>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
pr_err(msg, ##__VA_ARGS__); \
} while (0)
-#ifdef CONFIG_IP_VS_DEBUG
-#define EnterFunction(level) \
- do { \
- if (level <= ip_vs_get_debug_level()) \
- printk(KERN_DEBUG \
- pr_fmt("Enter: %s, %s line %i\n"), \
- __func__, __FILE__, __LINE__); \
- } while (0)
-#define LeaveFunction(level) \
- do { \
- if (level <= ip_vs_get_debug_level()) \
- printk(KERN_DEBUG \
- pr_fmt("Leave: %s, %s line %i\n"), \
- __func__, __FILE__, __LINE__); \
- } while (0)
-#else
-#define EnterFunction(level) do {} while (0)
-#define LeaveFunction(level) do {} while (0)
-#endif
-
/* The port number of FTP service (in network order). */
#define FTPPORT cpu_to_be16(21)
#define FTPDATA cpu_to_be16(20)
__be16 vport;
unsigned int flags;
- EnterFunction(12);
vaddr = &svc->addr;
vport = svc->port;
daddr = &iph->saddr;
IP_VS_DBG_ADDR(cp->af, &cp->vaddr), ntohs(cp->vport),
IP_VS_DBG_ADDR(cp->af, &cp->daddr), ntohs(cp->dport),
cp->flags, refcount_read(&cp->refcnt));
- LeaveFunction(12);
return cp;
}
ip_vs_update_conntrack(skb, cp, 0);
ip_vs_conn_put(cp);
- LeaveFunction(11);
return NF_ACCEPT;
drop:
ip_vs_conn_put(cp);
kfree_skb(skb);
- LeaveFunction(11);
return NF_STOLEN;
}
int af = state->pf;
struct sock *sk;
- EnterFunction(11);
-
/* Already marked as IPVS request or reply? */
if (skb->ipvs_property)
return NF_ACCEPT;
struct netns_ipvs *ipvs;
struct net *net;
- EnterFunction(2);
list_for_each_entry(net, net_list, exit_list) {
ipvs = net_ipvs(net);
ip_vs_unregister_hooks(ipvs, AF_INET);
smp_wmb();
ip_vs_sync_net_cleanup(ipvs);
}
- LeaveFunction(2);
}
static struct pernet_operations ipvs_core_ops = {
unsigned int atype;
int ret;
- EnterFunction(2);
-
#ifdef CONFIG_IP_VS_IPV6
if (udest->af == AF_INET6) {
atype = ipv6_addr_type(&udest->addr.in6);
spin_lock_init(&dest->dst_lock);
__ip_vs_update_dest(svc, dest, udest, 1);
- LeaveFunction(2);
return 0;
err_stats:
__be16 dport = udest->port;
int ret;
- EnterFunction(2);
-
if (udest->weight < 0) {
pr_err("%s(): server weight less than zero\n", __func__);
return -ERANGE;
ret = ip_vs_start_estimator(svc->ipvs, &dest->stats);
if (ret < 0)
- goto err;
+ return ret;
__ip_vs_update_dest(svc, dest, udest, 1);
} else {
/*
ret = ip_vs_new_dest(svc, udest);
}
-err:
- LeaveFunction(2);
-
return ret;
}
union nf_inet_addr daddr;
__be16 dport = udest->port;
- EnterFunction(2);
-
if (udest->weight < 0) {
pr_err("%s(): server weight less than zero\n", __func__);
return -ERANGE;
}
__ip_vs_update_dest(svc, dest, udest, 0);
- LeaveFunction(2);
return 0;
}
struct ip_vs_dest *dest;
__be16 dport = udest->port;
- EnterFunction(2);
-
/* We use function that requires RCU lock */
rcu_read_lock();
dest = ip_vs_lookup_dest(svc, udest->af, &udest->addr, dport);
*/
__ip_vs_del_dest(svc->ipvs, dest, false);
- LeaveFunction(2);
-
return 0;
}
struct netns_ipvs *ipvs;
struct net *net;
- EnterFunction(2);
/* Check for "full" addressed entries */
mutex_lock(&__ip_vs_mutex);
list_for_each_entry(net, net_list, exit_list) {
ip_vs_flush(ipvs, true);
}
mutex_unlock(&__ip_vs_mutex);
- LeaveFunction(2);
}
/* Put all references for device (dst_cache) */
if (event != NETDEV_DOWN || !ipvs)
return NOTIFY_DONE;
IP_VS_DBG(3, "%s() dev=%s\n", __func__, dev->name);
- EnterFunction(2);
mutex_lock(&__ip_vs_mutex);
for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) {
hlist_for_each_entry(svc, &ip_vs_svc_table[idx], s_list) {
}
spin_unlock_bh(&ipvs->dest_trash_lock);
mutex_unlock(&__ip_vs_mutex);
- LeaveFunction(2);
return NOTIFY_DONE;
}
int idx;
int ret;
- EnterFunction(2);
-
/* Initialize svc_table, ip_vs_svc_fwm_table */
for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) {
INIT_HLIST_HEAD(&ip_vs_svc_table[idx]);
if (ret < 0)
return ret;
- LeaveFunction(2);
return 0;
}
void ip_vs_control_cleanup(void)
{
- EnterFunction(2);
unregister_netdevice_notifier(&ip_vs_dst_notifier);
/* relying on common rcu_barrier() in ip_vs_cleanup() */
- LeaveFunction(2);
}
struct kvec iov;
int len;
- EnterFunction(7);
iov.iov_base = (void *)buffer;
iov.iov_len = length;
len = kernel_sendmsg(sock, &msg, &iov, 1, (size_t)(length));
- LeaveFunction(7);
return len;
}
struct kvec iov = {buffer, buflen};
int len;
- EnterFunction(7);
-
/* Receive a packet */
iov_iter_kvec(&msg.msg_iter, ITER_DEST, &iov, 1, buflen);
len = sock_recvmsg(sock, &msg, MSG_DONTWAIT);
if (len < 0)
return len;
- LeaveFunction(7);
return len;
}
{
struct iphdr *iph = ip_hdr(skb);
- EnterFunction(10);
-
if (__ip_vs_get_out_rt(cp->ipvs, cp->af, skb, NULL, iph->daddr,
IP_VS_RT_MODE_NON_LOCAL, NULL, ipvsh) < 0)
goto tx_error;
ip_vs_send_or_cont(NFPROTO_IPV4, skb, cp, 0);
- LeaveFunction(10);
return NF_STOLEN;
tx_error:
kfree_skb(skb);
- LeaveFunction(10);
return NF_STOLEN;
}
{
struct ipv6hdr *iph = ipv6_hdr(skb);
- EnterFunction(10);
-
if (__ip_vs_get_out_rt_v6(cp->ipvs, cp->af, skb, NULL,
&iph->daddr, NULL,
ipvsh, 0, IP_VS_RT_MODE_NON_LOCAL) < 0)
ip_vs_send_or_cont(NFPROTO_IPV6, skb, cp, 0);
- LeaveFunction(10);
return NF_STOLEN;
tx_error:
kfree_skb(skb);
- LeaveFunction(10);
return NF_STOLEN;
}
#endif
struct rtable *rt; /* Route to the other host */
int local, rc, was_input;
- EnterFunction(10);
-
/* check if it is a connection of no-client-port */
if (unlikely(cp->flags & IP_VS_CONN_F_NO_CPORT)) {
__be16 _pt, *p;
rc = ip_vs_nat_send_or_cont(NFPROTO_IPV4, skb, cp, local);
- LeaveFunction(10);
return rc;
tx_error:
kfree_skb(skb);
- LeaveFunction(10);
return NF_STOLEN;
}
struct rt6_info *rt; /* Route to the other host */
int local, rc;
- EnterFunction(10);
-
/* check if it is a connection of no-client-port */
if (unlikely(cp->flags & IP_VS_CONN_F_NO_CPORT && !ipvsh->fragoffs)) {
__be16 _pt, *p;
rc = ip_vs_nat_send_or_cont(NFPROTO_IPV6, skb, cp, local);
- LeaveFunction(10);
return rc;
tx_error:
- LeaveFunction(10);
kfree_skb(skb);
return NF_STOLEN;
}
int tun_type, gso_type;
int tun_flags;
- EnterFunction(10);
-
local = __ip_vs_get_out_rt(ipvs, cp->af, skb, cp->dest, cp->daddr.ip,
IP_VS_RT_MODE_LOCAL |
IP_VS_RT_MODE_NON_LOCAL |
&next_protocol, NULL, &dsfield,
&ttl, dfp);
if (IS_ERR(skb))
- goto tx_error;
+ return NF_STOLEN;
gso_type = __tun_gso_type_mask(AF_INET, cp->af);
if (tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE) {
else if (ret == NF_DROP)
kfree_skb(skb);
- LeaveFunction(10);
-
return NF_STOLEN;
tx_error:
- if (!IS_ERR(skb))
- kfree_skb(skb);
- LeaveFunction(10);
+ kfree_skb(skb);
return NF_STOLEN;
}
int tun_type, gso_type;
int tun_flags;
- EnterFunction(10);
-
local = __ip_vs_get_out_rt_v6(ipvs, cp->af, skb, cp->dest,
&cp->daddr.in6,
&saddr, ipvsh, 1,
&next_protocol, &payload_len,
&dsfield, &ttl, NULL);
if (IS_ERR(skb))
- goto tx_error;
+ return NF_STOLEN;
gso_type = __tun_gso_type_mask(AF_INET6, cp->af);
if (tun_type == IP_VS_CONN_F_TUNNEL_TYPE_GUE) {
else if (ret == NF_DROP)
kfree_skb(skb);
- LeaveFunction(10);
-
return NF_STOLEN;
tx_error:
- if (!IS_ERR(skb))
- kfree_skb(skb);
- LeaveFunction(10);
+ kfree_skb(skb);
return NF_STOLEN;
}
#endif
{
int local;
- EnterFunction(10);
-
local = __ip_vs_get_out_rt(cp->ipvs, cp->af, skb, cp->dest, cp->daddr.ip,
IP_VS_RT_MODE_LOCAL |
IP_VS_RT_MODE_NON_LOCAL |
ip_vs_send_or_cont(NFPROTO_IPV4, skb, cp, 0);
- LeaveFunction(10);
return NF_STOLEN;
tx_error:
kfree_skb(skb);
- LeaveFunction(10);
return NF_STOLEN;
}
{
int local;
- EnterFunction(10);
-
local = __ip_vs_get_out_rt_v6(cp->ipvs, cp->af, skb, cp->dest,
&cp->daddr.in6,
NULL, ipvsh, 0,
ip_vs_send_or_cont(NFPROTO_IPV6, skb, cp, 0);
- LeaveFunction(10);
return NF_STOLEN;
tx_error:
kfree_skb(skb);
- LeaveFunction(10);
return NF_STOLEN;
}
#endif
int local;
int rt_mode, was_input;
- EnterFunction(10);
-
/* The ICMP packet for VS/TUN, VS/DR and LOCALNODE will be
forwarded directly here, because there is no need to
translate address/port back */
rc = NF_ACCEPT;
/* do not touch skb anymore */
atomic_inc(&cp->in_pkts);
- goto out;
+ return rc;
}
/*
/* Another hack: avoid icmp_send in ip_fragment */
skb->ignore_df = 1;
- rc = ip_vs_nat_send_or_cont(NFPROTO_IPV4, skb, cp, local);
- goto out;
+ return ip_vs_nat_send_or_cont(NFPROTO_IPV4, skb, cp, local);
tx_error:
kfree_skb(skb);
rc = NF_STOLEN;
- out:
- LeaveFunction(10);
return rc;
}
int local;
int rt_mode;
- EnterFunction(10);
-
/* The ICMP packet for VS/TUN, VS/DR and LOCALNODE will be
forwarded directly here, because there is no need to
translate address/port back */
rc = NF_ACCEPT;
/* do not touch skb anymore */
atomic_inc(&cp->in_pkts);
- goto out;
+ return rc;
}
/*
/* Another hack: avoid icmp_send in ip_fragment */
skb->ignore_df = 1;
- rc = ip_vs_nat_send_or_cont(NFPROTO_IPV6, skb, cp, local);
- goto out;
+ return ip_vs_nat_send_or_cont(NFPROTO_IPV6, skb, cp, local);
tx_error:
kfree_skb(skb);
rc = NF_STOLEN;
-out:
- LeaveFunction(10);
return rc;
}
#endif
projects / linux-block.git / commitdiff