errno is 0 because these hooks are called from prerouting and forward.
There is no socket that the errno would ever be propagated to.
Other netfilter modules (e.g. nf_nat, conntrack, ...) can be converted
in a similar way.
Signed-off-by: Florian Westphal <fw@xxxxxxxxx>
---
net/bridge/br_netfilter_hooks.c | 26 +++++++++++++-------------
net/bridge/br_netfilter_ipv6.c | 6 +++---
2 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c
index 033034d68f1f..4c0c9f838f5c 100644
--- a/net/bridge/br_netfilter_hooks.c
+++ b/net/bridge/br_netfilter_hooks.c
@@ -486,11 +486,11 @@ static unsigned int br_nf_pre_routing(void *priv,
struct brnf_net *brnet;
if (unlikely(!pskb_may_pull(skb, len)))
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_PKT_TOO_SMALL, 0);
p = br_port_get_rcu(state->in);
if (p == NULL)
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_DEV_READY, 0);
br = p->br;
brnet = net_generic(state->net, brnf_net_id);
@@ -501,7 +501,7 @@ static unsigned int br_nf_pre_routing(void *priv,
return NF_ACCEPT;
if (!ipv6_mod_enabled()) {
pr_warn_once("Module ipv6 is disabled, so call_ip6tables is not supported.");
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_IPV6DISABLED, 0);
}
nf_bridge_pull_encap_header_rcsum(skb);
@@ -518,12 +518,12 @@ static unsigned int br_nf_pre_routing(void *priv,
nf_bridge_pull_encap_header_rcsum(skb);
if (br_validate_ipv4(state->net, skb))
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_IP_INHDR, 0);
if (!nf_bridge_alloc(skb))
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_NOMEM, 0);
if (!setup_pre_routing(skb, state->net))
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_DEV_READY, 0);
nf_bridge = nf_bridge_info_get(skb);
nf_bridge->ipv4_daddr = ip_hdr(skb)->daddr;
@@ -590,15 +590,15 @@ static unsigned int br_nf_forward_ip(void *priv,
/* Need exclusive nf_bridge_info since we might have multiple
* different physoutdevs. */
if (!nf_bridge_unshare(skb))
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_NOMEM, 0);
nf_bridge = nf_bridge_info_get(skb);
if (!nf_bridge)
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_NOMEM, 0);
parent = bridge_parent(state->out);
if (!parent)
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_DEV_READY, 0);
if (IS_IP(skb) || is_vlan_ip(skb, state->net) ||
is_pppoe_ip(skb, state->net))
@@ -618,13 +618,13 @@ static unsigned int br_nf_forward_ip(void *priv,
if (pf == NFPROTO_IPV4) {
if (br_validate_ipv4(state->net, skb))
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_IP_INHDR, 0);
IPCB(skb)->frag_max_size = nf_bridge->frag_max_size;
}
if (pf == NFPROTO_IPV6) {
if (br_validate_ipv6(state->net, skb))
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_IP_INHDR, 0);
IP6CB(skb)->frag_max_size = nf_bridge->frag_max_size;
}
@@ -666,7 +666,7 @@ static unsigned int br_nf_forward_arp(void *priv,
}
if (unlikely(!pskb_may_pull(skb, sizeof(struct arphdr))))
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_PKT_TOO_SMALL, 0);
if (arp_hdr(skb)->ar_pln != 4) {
if (is_vlan_arp(skb, state->net))
@@ -831,7 +831,7 @@ static unsigned int br_nf_post_routing(void *priv,
return NF_ACCEPT;
if (!realoutdev)
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_DEV_READY, 0);
if (IS_IP(skb) || is_vlan_ip(skb, state->net) ||
is_pppoe_ip(skb, state->net))
diff --git a/net/bridge/br_netfilter_ipv6.c b/net/bridge/br_netfilter_ipv6.c
index 550039dfc31a..2e24a743f917 100644
--- a/net/bridge/br_netfilter_ipv6.c
+++ b/net/bridge/br_netfilter_ipv6.c
@@ -161,13 +161,13 @@ unsigned int br_nf_pre_routing_ipv6(void *priv,
struct nf_bridge_info *nf_bridge;
if (br_validate_ipv6(state->net, skb))
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_IP_INHDR, 0);
nf_bridge = nf_bridge_alloc(skb);
if (!nf_bridge)
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_NOMEM, 0);
if (!setup_pre_routing(skb, state->net))
- return NF_DROP;
+ return NF_DROP_REASON(skb, SKB_DROP_REASON_DEV_READY, 0);
nf_bridge = nf_bridge_info_get(skb);
nf_bridge->ipv6_daddr = ipv6_hdr(skb)->daddr;
--
2.41.0
