diff options
author | Thomas Graf <tgraf@suug.ch> | 2007-03-22 23:30:12 -0700 |
---|---|---|
committer | David S. Miller <davem@sunset.davemloft.net> | 2007-04-25 22:27:30 -0700 |
commit | 1d00a4eb42bdade33a6ec0961cada93577a66ae6 (patch) | |
tree | a181b141818f594eb544601386bf09e45e6193bb /net/netfilter/nf_conntrack_netlink.c | |
parent | [NETLINK]: Ignore control messages directly in netlink_run_queue() (diff) | |
download | linux-dev-1d00a4eb42bdade33a6ec0961cada93577a66ae6.tar.xz linux-dev-1d00a4eb42bdade33a6ec0961cada93577a66ae6.zip |
[NETLINK]: Remove error pointer from netlink message handler
The error pointer argument in netlink message handlers is used
to signal the special case where processing has to be interrupted
because a dump was started but no error happened. Instead it is
simpler and more clear to return -EINTR and have netlink_run_queue()
deal with getting the queue right.
nfnetlink passed on this error pointer to its subsystem handlers
but only uses it to signal the start of a netlink dump. Therefore
it can be removed there as well.
This patch also cleans up the error handling in the affected
message handlers to be consistent since it had to be touched anyway.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netfilter/nf_conntrack_netlink.c')
-rw-r--r-- | net/netfilter/nf_conntrack_netlink.c | 46 |
1 files changed, 17 insertions, 29 deletions
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 76f11f325919..443ba7753a33 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -661,7 +661,7 @@ static const size_t cta_min[CTA_MAX] = { static int ctnetlink_del_conntrack(struct sock *ctnl, struct sk_buff *skb, - struct nlmsghdr *nlh, struct nfattr *cda[], int *errp) + struct nlmsghdr *nlh, struct nfattr *cda[]) { struct nf_conntrack_tuple_hash *h; struct nf_conntrack_tuple tuple; @@ -709,7 +709,7 @@ ctnetlink_del_conntrack(struct sock *ctnl, struct sk_buff *skb, static int ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb, - struct nlmsghdr *nlh, struct nfattr *cda[], int *errp) + struct nlmsghdr *nlh, struct nfattr *cda[]) { struct nf_conntrack_tuple_hash *h; struct nf_conntrack_tuple tuple; @@ -720,22 +720,15 @@ ctnetlink_get_conntrack(struct sock *ctnl, struct sk_buff *skb, int err = 0; if (nlh->nlmsg_flags & NLM_F_DUMP) { - u32 rlen; - #ifndef CONFIG_NF_CT_ACCT if (NFNL_MSG_TYPE(nlh->nlmsg_type) == IPCTNL_MSG_CT_GET_CTRZERO) return -ENOTSUPP; #endif - if ((*errp = netlink_dump_start(ctnl, skb, nlh, - ctnetlink_dump_table, - ctnetlink_done)) != 0) - return -EINVAL; - - rlen = NLMSG_ALIGN(nlh->nlmsg_len); - if (rlen > skb->len) - rlen = skb->len; - skb_pull(skb, rlen); - return 0; + err = netlink_dump_start(ctnl, skb, nlh, ctnetlink_dump_table, + ctnetlink_done); + if (err == 0) + err = -EINTR; + return err; } if (nfattr_bad_size(cda, CTA_MAX, cta_min)) @@ -1009,7 +1002,7 @@ err: static int ctnetlink_new_conntrack(struct sock *ctnl, struct sk_buff *skb, - struct nlmsghdr *nlh, struct nfattr *cda[], int *errp) + struct nlmsghdr *nlh, struct nfattr *cda[]) { struct nf_conntrack_tuple otuple, rtuple; struct nf_conntrack_tuple_hash *h = NULL; @@ -1260,7 +1253,7 @@ static const size_t cta_min_exp[CTA_EXPECT_MAX] = { static int ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb, - struct nlmsghdr *nlh, struct nfattr *cda[], int *errp) + struct nlmsghdr *nlh, struct nfattr *cda[]) { struct nf_conntrack_tuple tuple; struct nf_conntrack_expect *exp; @@ -1273,17 +1266,12 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb, return -EINVAL; if (nlh->nlmsg_flags & NLM_F_DUMP) { - u32 rlen; - - if ((*errp = netlink_dump_start(ctnl, skb, nlh, - ctnetlink_exp_dump_table, - ctnetlink_done)) != 0) - return -EINVAL; - rlen = NLMSG_ALIGN(nlh->nlmsg_len); - if (rlen > skb->len) - rlen = skb->len; - skb_pull(skb, rlen); - return 0; + err = netlink_dump_start(ctnl, skb, nlh, + ctnetlink_exp_dump_table, + ctnetlink_done); + if (err == 0) + err = -EINTR; + return err; } if (cda[CTA_EXPECT_MASTER-1]) @@ -1330,7 +1318,7 @@ out: static int ctnetlink_del_expect(struct sock *ctnl, struct sk_buff *skb, - struct nlmsghdr *nlh, struct nfattr *cda[], int *errp) + struct nlmsghdr *nlh, struct nfattr *cda[]) { struct nf_conntrack_expect *exp, *tmp; struct nf_conntrack_tuple tuple; @@ -1464,7 +1452,7 @@ out: static int ctnetlink_new_expect(struct sock *ctnl, struct sk_buff *skb, - struct nlmsghdr *nlh, struct nfattr *cda[], int *errp) + struct nlmsghdr *nlh, struct nfattr *cda[]) { struct nf_conntrack_tuple tuple; struct nf_conntrack_expect *exp; |