netlink: add netlink_dump_control structure for netlink_dump_start()
Davem considers that the argument list of this interface is getting
out of control. This patch tries to address this issue following
his proposal:
struct netlink_dump_control c = { .dump = dump, .done = done, ... };
netlink_dump_start(..., &c);
Suggested by David S. Miller.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 65aebd4..7aef62e 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1981,8 +1981,13 @@
__rtnl_unlock();
rtnl = net->rtnl;
- err = netlink_dump_start(rtnl, skb, nlh, dumpit,
- NULL, min_dump_alloc);
+ {
+ struct netlink_dump_control c = {
+ .dump = dumpit,
+ .min_dump_alloc = min_dump_alloc,
+ };
+ err = netlink_dump_start(rtnl, skb, nlh, &c);
+ }
rtnl_lock();
return err;
}
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index fcf2818..8d25a1c 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -960,9 +960,12 @@
inet_diag_bc_audit(nla_data(attr), nla_len(attr)))
return -EINVAL;
}
-
- return netlink_dump_start(sock_diag_nlsk, skb, nlh,
- inet_diag_dump_compat, NULL, 0);
+ {
+ struct netlink_dump_control c = {
+ .dump = inet_diag_dump_compat,
+ };
+ return netlink_dump_start(sock_diag_nlsk, skb, nlh, &c);
+ }
}
return inet_diag_get_exact_compat(skb, nlh);
@@ -985,9 +988,12 @@
inet_diag_bc_audit(nla_data(attr), nla_len(attr)))
return -EINVAL;
}
-
- return netlink_dump_start(sock_diag_nlsk, skb, h,
- inet_diag_dump, NULL, 0);
+ {
+ struct netlink_dump_control c = {
+ .dump = inet_diag_dump,
+ };
+ return netlink_dump_start(sock_diag_nlsk, skb, h, &c);
+ }
}
return inet_diag_get_exact(skb, h, (struct inet_diag_req_v2 *)NLMSG_DATA(h));
diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c
index 32dbf0f..e7f90e7 100644
--- a/net/netfilter/ipset/ip_set_core.c
+++ b/net/netfilter/ipset/ip_set_core.c
@@ -1162,9 +1162,13 @@
if (unlikely(protocol_failed(attr)))
return -IPSET_ERR_PROTOCOL;
- return netlink_dump_start(ctnl, skb, nlh,
- ip_set_dump_start,
- ip_set_dump_done, 0);
+ {
+ struct netlink_dump_control c = {
+ .dump = ip_set_dump_start,
+ .done = ip_set_dump_done,
+ };
+ return netlink_dump_start(ctnl, skb, nlh, &c);
+ }
}
/* Add, del and test */
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 9307b03..61f7feb 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -977,9 +977,13 @@
u16 zone;
int err;
- if (nlh->nlmsg_flags & NLM_F_DUMP)
- return netlink_dump_start(ctnl, skb, nlh, ctnetlink_dump_table,
- ctnetlink_done, 0);
+ if (nlh->nlmsg_flags & NLM_F_DUMP) {
+ struct netlink_dump_control c = {
+ .dump = ctnetlink_dump_table,
+ .done = ctnetlink_done,
+ };
+ return netlink_dump_start(ctnl, skb, nlh, &c);
+ }
err = ctnetlink_parse_zone(cda[CTA_ZONE], &zone);
if (err < 0)
@@ -1850,9 +1854,11 @@
int err;
if (nlh->nlmsg_flags & NLM_F_DUMP) {
- return netlink_dump_start(ctnl, skb, nlh,
- ctnetlink_exp_dump_table,
- ctnetlink_exp_done, 0);
+ struct netlink_dump_control c = {
+ .dump = ctnetlink_exp_dump_table,
+ .done = ctnetlink_exp_done,
+ };
+ return netlink_dump_start(ctnl, skb, nlh, &c);
}
err = ctnetlink_parse_zone(cda[CTA_EXPECT_ZONE], &zone);
diff --git a/net/netfilter/nfnetlink_acct.c b/net/netfilter/nfnetlink_acct.c
index 11ba013..3eb348b 100644
--- a/net/netfilter/nfnetlink_acct.c
+++ b/net/netfilter/nfnetlink_acct.c
@@ -171,8 +171,10 @@
char *acct_name;
if (nlh->nlmsg_flags & NLM_F_DUMP) {
- return netlink_dump_start(nfnl, skb, nlh, nfnl_acct_dump,
- NULL, 0);
+ struct netlink_dump_control c = {
+ .dump = nfnl_acct_dump,
+ };
+ return netlink_dump_start(nfnl, skb, nlh, &c);
}
if (!tb[NFACCT_NAME])
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 4d751e3..ab74845 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1736,10 +1736,7 @@
int netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
const struct nlmsghdr *nlh,
- int (*dump)(struct sk_buff *skb,
- struct netlink_callback *),
- int (*done)(struct netlink_callback *),
- u16 min_dump_alloc)
+ struct netlink_dump_control *control)
{
struct netlink_callback *cb;
struct sock *sk;
@@ -1750,10 +1747,10 @@
if (cb == NULL)
return -ENOBUFS;
- cb->dump = dump;
- cb->done = done;
+ cb->dump = control->dump;
+ cb->done = control->done;
cb->nlh = nlh;
- cb->min_dump_alloc = min_dump_alloc;
+ cb->min_dump_alloc = control->min_dump_alloc;
atomic_inc(&skb->users);
cb->skb = skb;
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index a115471..9f40441 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -563,8 +563,13 @@
return -EOPNOTSUPP;
genl_unlock();
- err = netlink_dump_start(net->genl_sock, skb, nlh,
- ops->dumpit, ops->done, 0);
+ {
+ struct netlink_dump_control c = {
+ .dump = ops->dumpit,
+ .done = ops->done,
+ };
+ err = netlink_dump_start(net->genl_sock, skb, nlh, &c);
+ }
genl_lock();
return err;
}
diff --git a/net/unix/diag.c b/net/unix/diag.c
index 6b7697f..4195555 100644
--- a/net/unix/diag.c
+++ b/net/unix/diag.c
@@ -301,10 +301,12 @@
if (nlmsg_len(h) < hdrlen)
return -EINVAL;
- if (h->nlmsg_flags & NLM_F_DUMP)
- return netlink_dump_start(sock_diag_nlsk, skb, h,
- unix_diag_dump, NULL, 0);
- else
+ if (h->nlmsg_flags & NLM_F_DUMP) {
+ struct netlink_dump_control c = {
+ .dump = unix_diag_dump,
+ };
+ return netlink_dump_start(sock_diag_nlsk, skb, h, &c);
+ } else
return unix_diag_get_exact(skb, h, (struct unix_diag_req *)NLMSG_DATA(h));
}
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 66b84fb..7128dde 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -2299,8 +2299,13 @@
if (link->dump == NULL)
return -EINVAL;
- return netlink_dump_start(net->xfrm.nlsk, skb, nlh,
- link->dump, link->done, 0);
+ {
+ struct netlink_dump_control c = {
+ .dump = link->dump,
+ .done = link->done,
+ };
+ return netlink_dump_start(net->xfrm.nlsk, skb, nlh, &c);
+ }
}
err = nlmsg_parse(nlh, xfrm_msg_min[type], attrs, XFRMA_MAX,