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Diffstat (limited to 'net/sched/act_mirred.c')
-rw-r--r--net/sched/act_mirred.c28
1 files changed, 14 insertions, 14 deletions
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index bd3178a95cb9..a82400f219f3 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -215,8 +215,10 @@ static int tcf_mirred_act(struct sk_buff *skb, const struct tc_action *a,
bool use_reinsert;
bool want_ingress;
bool is_redirect;
+ bool expects_nh;
int m_eaction;
int mac_len;
+ bool at_nh;
tcf_lastuse_update(&m->tcf_tm);
bstats_cpu_update(this_cpu_ptr(m->common.cpu_bstats), skb);
@@ -249,19 +251,19 @@ static int tcf_mirred_act(struct sk_buff *skb, const struct tc_action *a,
goto out;
}
- /* If action's target direction differs than filter's direction,
- * and devices expect a mac header on xmit, then mac push/pull is
- * needed.
- */
want_ingress = tcf_mirred_act_wants_ingress(m_eaction);
- if (skb_at_tc_ingress(skb) != want_ingress && m_mac_header_xmit) {
- if (!skb_at_tc_ingress(skb)) {
- /* caught at egress, act ingress: pull mac */
- mac_len = skb_network_header(skb) - skb_mac_header(skb);
+
+ expects_nh = want_ingress || !m_mac_header_xmit;
+ at_nh = skb->data == skb_network_header(skb);
+ if (at_nh != expects_nh) {
+ mac_len = skb_at_tc_ingress(skb) ? skb->mac_len :
+ skb_network_header(skb) - skb_mac_header(skb);
+ if (expects_nh) {
+ /* target device/action expect data at nh */
skb_pull_rcsum(skb2, mac_len);
} else {
- /* caught at ingress, act egress: push mac */
- skb_push_rcsum(skb2, skb->mac_len);
+ /* target device/action expect data at mac */
+ skb_push_rcsum(skb2, mac_len);
}
}
@@ -270,10 +272,8 @@ static int tcf_mirred_act(struct sk_buff *skb, const struct tc_action *a,
/* mirror is always swallowed */
if (is_redirect) {
- skb2->tc_redirected = 1;
- skb2->tc_from_ingress = skb2->tc_at_ingress;
- if (skb2->tc_from_ingress)
- skb2->tstamp = 0;
+ skb_set_redirected(skb2, skb2->tc_at_ingress);
+
/* let's the caller reinsert the packet, if possible */
if (use_reinsert) {
res->ingress = want_ingress;