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-rw-r--r--net/dsa/dsa.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 6cc5be2..f8c5492 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -202,6 +202,22 @@ static void dsa_switch_destroy(struct dsa_switch *ds)
}
+/* hooks for ethertype-less tagging formats *********************************/
+/*
+ * The original DSA tag format and some other tag formats have no
+ * ethertype, which means that we need to add a little hack to the
+ * networking receive path to make sure that received frames get
+ * the right ->protocol assigned to them when one of those tag
+ * formats is in use.
+ */
+bool dsa_uses_dsa_tags(void *dsa_ptr)
+{
+ struct dsa_switch *ds = dsa_ptr;
+
+ return !!(ds->tag_protocol == htons(ETH_P_DSA));
+}
+
+
/* link polling *************************************************************/
static void dsa_link_poll_work(struct work_struct *ugly)
{
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