netfilter: nfnetlink: pass down netns pointer to call() and call_rcu()
Adapt callsites to avoid recurrent lookup of the netns pointer.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 9f52729..dbb1bb3 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -1113,12 +1113,11 @@
return 0;
}
-static int
-ctnetlink_del_conntrack(struct sock *ctnl, struct sk_buff *skb,
- const struct nlmsghdr *nlh,
- const struct nlattr * const cda[])
+static int ctnetlink_del_conntrack(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb,
+ const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[])
{
- struct net *net = sock_net(ctnl);
struct nf_conntrack_tuple_hash *h;
struct nf_conntrack_tuple tuple;
struct nf_conn *ct;
@@ -1168,12 +1167,11 @@
return 0;
}
-static int
-ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb,
- const struct nlmsghdr *nlh,
- const struct nlattr * const cda[])
+static int ctnetlink_get_conntrack(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb,
+ const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[])
{
- struct net *net = sock_net(ctnl);
struct nf_conntrack_tuple_hash *h;
struct nf_conntrack_tuple tuple;
struct nf_conn *ct;
@@ -1330,10 +1328,10 @@
return ctnetlink_dump_list(skb, cb, true);
}
-static int
-ctnetlink_get_ct_dying(struct sock *ctnl, struct sk_buff *skb,
- const struct nlmsghdr *nlh,
- const struct nlattr * const cda[])
+static int ctnetlink_get_ct_dying(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb,
+ const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[])
{
if (nlh->nlmsg_flags & NLM_F_DUMP) {
struct netlink_dump_control c = {
@@ -1352,10 +1350,10 @@
return ctnetlink_dump_list(skb, cb, false);
}
-static int
-ctnetlink_get_ct_unconfirmed(struct sock *ctnl, struct sk_buff *skb,
- const struct nlmsghdr *nlh,
- const struct nlattr * const cda[])
+static int ctnetlink_get_ct_unconfirmed(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb,
+ const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[])
{
if (nlh->nlmsg_flags & NLM_F_DUMP) {
struct netlink_dump_control c = {
@@ -1865,12 +1863,11 @@
return ERR_PTR(err);
}
-static int
-ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb,
- const struct nlmsghdr *nlh,
- const struct nlattr * const cda[])
+static int ctnetlink_new_conntrack(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb,
+ const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[])
{
- struct net *net = sock_net(ctnl);
struct nf_conntrack_tuple otuple, rtuple;
struct nf_conntrack_tuple_hash *h = NULL;
struct nfgenmsg *nfmsg = nlmsg_data(nlh);
@@ -2034,10 +2031,10 @@
return skb->len;
}
-static int
-ctnetlink_stat_ct_cpu(struct sock *ctnl, struct sk_buff *skb,
- const struct nlmsghdr *nlh,
- const struct nlattr * const cda[])
+static int ctnetlink_stat_ct_cpu(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb,
+ const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[])
{
if (nlh->nlmsg_flags & NLM_F_DUMP) {
struct netlink_dump_control c = {
@@ -2080,10 +2077,9 @@
return -1;
}
-static int
-ctnetlink_stat_ct(struct sock *ctnl, struct sk_buff *skb,
- const struct nlmsghdr *nlh,
- const struct nlattr * const cda[])
+static int ctnetlink_stat_ct(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb, const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[])
{
struct sk_buff *skb2;
int err;
@@ -2729,12 +2725,12 @@
return skb->len;
}
-static int ctnetlink_dump_exp_ct(struct sock *ctnl, struct sk_buff *skb,
+static int ctnetlink_dump_exp_ct(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb,
const struct nlmsghdr *nlh,
const struct nlattr * const cda[])
{
int err;
- struct net *net = sock_net(ctnl);
struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u_int8_t u3 = nfmsg->nfgen_family;
struct nf_conntrack_tuple tuple;
@@ -2768,12 +2764,10 @@
return err;
}
-static int
-ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb,
- const struct nlmsghdr *nlh,
- const struct nlattr * const cda[])
+static int ctnetlink_get_expect(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb, const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[])
{
- struct net *net = sock_net(ctnl);
struct nf_conntrack_tuple tuple;
struct nf_conntrack_expect *exp;
struct sk_buff *skb2;
@@ -2784,7 +2778,7 @@
if (nlh->nlmsg_flags & NLM_F_DUMP) {
if (cda[CTA_EXPECT_MASTER])
- return ctnetlink_dump_exp_ct(ctnl, skb, nlh, cda);
+ return ctnetlink_dump_exp_ct(net, ctnl, skb, nlh, cda);
else {
struct netlink_dump_control c = {
.dump = ctnetlink_exp_dump_table,
@@ -2850,12 +2844,10 @@
return err == -EAGAIN ? -ENOBUFS : err;
}
-static int
-ctnetlink_del_expect(struct sock *ctnl, struct sk_buff *skb,
- const struct nlmsghdr *nlh,
- const struct nlattr * const cda[])
+static int ctnetlink_del_expect(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb, const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[])
{
- struct net *net = sock_net(ctnl);
struct nf_conntrack_expect *exp;
struct nf_conntrack_tuple tuple;
struct nfgenmsg *nfmsg = nlmsg_data(nlh);
@@ -3136,12 +3128,10 @@
return err;
}
-static int
-ctnetlink_new_expect(struct sock *ctnl, struct sk_buff *skb,
- const struct nlmsghdr *nlh,
- const struct nlattr * const cda[])
+static int ctnetlink_new_expect(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb, const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[])
{
- struct net *net = sock_net(ctnl);
struct nf_conntrack_tuple tuple;
struct nf_conntrack_expect *exp;
struct nfgenmsg *nfmsg = nlmsg_data(nlh);
@@ -3242,10 +3232,10 @@
return skb->len;
}
-static int
-ctnetlink_stat_exp_cpu(struct sock *ctnl, struct sk_buff *skb,
- const struct nlmsghdr *nlh,
- const struct nlattr * const cda[])
+static int ctnetlink_stat_exp_cpu(struct net *net, struct sock *ctnl,
+ struct sk_buff *skb,
+ const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[])
{
if (nlh->nlmsg_flags & NLM_F_DUMP) {
struct netlink_dump_control c = {