Flowtable and netdev chains are bound to one or several netdevice,
extend netlink error reporting to specify the the netdevice that
triggers the error.
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
net/netfilter/nf_tables_api.c | 38 ++++++++++++++++++++++-------------
1 file changed, 24 insertions(+), 14 deletions(-)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 44ebc5f9598e..0fd4e28fbb60 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -1954,7 +1954,8 @@ static struct nft_hook *nft_hook_list_find(struct list_head *hook_list,
static int nf_tables_parse_netdev_hooks(struct net *net,
const struct nlattr *attr,
- struct list_head *hook_list)
+ struct list_head *hook_list,
+ struct netlink_ext_ack *extack)
{
struct nft_hook *hook, *next;
const struct nlattr *tmp;
@@ -1968,10 +1969,12 @@ static int nf_tables_parse_netdev_hooks(struct net *net,
hook = nft_netdev_hook_alloc(net, tmp);
if (IS_ERR(hook)) {
+ NL_SET_BAD_ATTR(extack, tmp);
err = PTR_ERR(hook);
goto err_hook;
}
if (nft_hook_list_find(hook_list, hook)) {
+ NL_SET_BAD_ATTR(extack, tmp);
kfree(hook);
err = -EEXIST;
goto err_hook;
@@ -2004,20 +2007,23 @@ struct nft_chain_hook {
static int nft_chain_parse_netdev(struct net *net,
struct nlattr *tb[],
- struct list_head *hook_list)
+ struct list_head *hook_list,
+ struct netlink_ext_ack *extack)
{
struct nft_hook *hook;
int err;
if (tb[NFTA_HOOK_DEV]) {
hook = nft_netdev_hook_alloc(net, tb[NFTA_HOOK_DEV]);
- if (IS_ERR(hook))
+ if (IS_ERR(hook)) {
+ NL_SET_BAD_ATTR(extack, tb[NFTA_HOOK_DEV]);
return PTR_ERR(hook);
+ }
list_add_tail(&hook->list, hook_list);
} else if (tb[NFTA_HOOK_DEVS]) {
err = nf_tables_parse_netdev_hooks(net, tb[NFTA_HOOK_DEVS],
- hook_list);
+ hook_list, extack);
if (err < 0)
return err;
@@ -2085,7 +2091,7 @@ static int nft_chain_parse_hook(struct net *net,
INIT_LIST_HEAD(&hook->list);
if (nft_base_chain_netdev(family, hook->num)) {
- err = nft_chain_parse_netdev(net, ha, &hook->list);
+ err = nft_chain_parse_netdev(net, ha, &hook->list, extack);
if (err < 0) {
module_put(type->owner);
return err;
@@ -7560,7 +7566,8 @@ static const struct nla_policy nft_flowtable_hook_policy[NFTA_FLOWTABLE_HOOK_MAX
static int nft_flowtable_parse_hook(const struct nft_ctx *ctx,
const struct nlattr *attr,
struct nft_flowtable_hook *flowtable_hook,
- struct nft_flowtable *flowtable, bool add)
+ struct nft_flowtable *flowtable,
+ struct netlink_ext_ack *extack, bool add)
{
struct nlattr *tb[NFTA_FLOWTABLE_HOOK_MAX + 1];
struct nft_hook *hook;
@@ -7607,7 +7614,8 @@ static int nft_flowtable_parse_hook(const struct nft_ctx *ctx,
if (tb[NFTA_FLOWTABLE_HOOK_DEVS]) {
err = nf_tables_parse_netdev_hooks(ctx->net,
tb[NFTA_FLOWTABLE_HOOK_DEVS],
- &flowtable_hook->list);
+ &flowtable_hook->list,
+ extack);
if (err < 0)
return err;
}
@@ -7750,7 +7758,8 @@ static void nft_flowtable_hooks_destroy(struct list_head *hook_list)
}
static int nft_flowtable_update(struct nft_ctx *ctx, const struct nlmsghdr *nlh,
- struct nft_flowtable *flowtable)
+ struct nft_flowtable *flowtable,
+ struct netlink_ext_ack *extack)
{
const struct nlattr * const *nla = ctx->nla;
struct nft_flowtable_hook flowtable_hook;
@@ -7761,7 +7770,7 @@ static int nft_flowtable_update(struct nft_ctx *ctx, const struct nlmsghdr *nlh,
int err;
err = nft_flowtable_parse_hook(ctx, nla[NFTA_FLOWTABLE_HOOK],
- &flowtable_hook, flowtable, false);
+ &flowtable_hook, flowtable, extack, false);
if (err < 0)
return err;
@@ -7866,7 +7875,7 @@ static int nf_tables_newflowtable(struct sk_buff *skb,
nft_ctx_init(&ctx, net, skb, info->nlh, family, table, NULL, nla);
- return nft_flowtable_update(&ctx, info->nlh, flowtable);
+ return nft_flowtable_update(&ctx, info->nlh, flowtable, extack);
}
nft_ctx_init(&ctx, net, skb, info->nlh, family, table, NULL, nla);
@@ -7907,7 +7916,7 @@ static int nf_tables_newflowtable(struct sk_buff *skb,
goto err3;
err = nft_flowtable_parse_hook(&ctx, nla[NFTA_FLOWTABLE_HOOK],
- &flowtable_hook, flowtable, true);
+ &flowtable_hook, flowtable, extack, true);
if (err < 0)
goto err4;
@@ -7959,7 +7968,8 @@ static void nft_flowtable_hook_release(struct nft_flowtable_hook *flowtable_hook
}
static int nft_delflowtable_hook(struct nft_ctx *ctx,
- struct nft_flowtable *flowtable)
+ struct nft_flowtable *flowtable,
+ struct netlink_ext_ack *extack)
{
const struct nlattr * const *nla = ctx->nla;
struct nft_flowtable_hook flowtable_hook;
@@ -7969,7 +7979,7 @@ static int nft_delflowtable_hook(struct nft_ctx *ctx,
int err;
err = nft_flowtable_parse_hook(ctx, nla[NFTA_FLOWTABLE_HOOK],
- &flowtable_hook, flowtable, false);
+ &flowtable_hook, flowtable, extack, false);
if (err < 0)
return err;
@@ -8051,7 +8061,7 @@ static int nf_tables_delflowtable(struct sk_buff *skb,
nft_ctx_init(&ctx, net, skb, info->nlh, family, table, NULL, nla);
if (nla[NFTA_FLOWTABLE_HOOK])
- return nft_delflowtable_hook(&ctx, flowtable);
+ return nft_delflowtable_hook(&ctx, flowtable, extack);
if (flowtable->use > 0) {
NL_SET_BAD_ATTR(extack, attr);
--
2.30.2
