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authorMiquel Raynal <miquel.raynal@bootlin.com>2022-04-07 12:08:58 +0200
committerStefan Schmidt <stefan@datenfreihafen.org>2022-04-25 20:51:12 +0200
commit5a1b57c0dde9b93ba8261fa1c81f9aae2bac284a (patch)
tree2727624358f8d0b4ea17a076b5313ef320c8695e
parent30ca44eb2480ede838c7c8c131a7d25589a98f0a (diff)
downloadlinux-5a1b57c0dde9b93ba8261fa1c81f9aae2bac284a.tar.bz2
net: mac802154: Create an error helper for asynchronous offloading errors
A few drivers do the full transmit operation asynchronously, which means that a bus error that happens when forwarding the packet to the transmitter or a timeout happening when offloading the request to the transmitter will not be reported immediately. The solution in this case is to call this new helper to free the necessary resources, restart the queue and always return the same generic TRAC error code: IEEE802154_SYSTEM_ERROR. Suggested-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/r/20220407100903.1695973-6-miquel.raynal@bootlin.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
-rw-r--r--include/net/mac802154.h9
-rw-r--r--net/mac802154/util.c6
2 files changed, 15 insertions, 0 deletions
diff --git a/include/net/mac802154.h b/include/net/mac802154.h
index 29f289d58720..bdac0ddbdcdb 100644
--- a/include/net/mac802154.h
+++ b/include/net/mac802154.h
@@ -508,4 +508,13 @@ void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
void ieee802154_xmit_error(struct ieee802154_hw *hw, struct sk_buff *skb,
int reason);
+/**
+ * ieee802154_xmit_hw_error - frame could not be offloaded to the transmitter
+ * because of a hardware error (bus error, timeout, etc)
+ *
+ * @hw: pointer as obtained from ieee802154_alloc_hw().
+ * @skb: buffer for transmission
+ */
+void ieee802154_xmit_hw_error(struct ieee802154_hw *hw, struct sk_buff *skb);
+
#endif /* NET_MAC802154_H */
diff --git a/net/mac802154/util.c b/net/mac802154/util.c
index ec523335336c..9f024d85563b 100644
--- a/net/mac802154/util.c
+++ b/net/mac802154/util.c
@@ -102,6 +102,12 @@ void ieee802154_xmit_error(struct ieee802154_hw *hw, struct sk_buff *skb,
}
EXPORT_SYMBOL(ieee802154_xmit_error);
+void ieee802154_xmit_hw_error(struct ieee802154_hw *hw, struct sk_buff *skb)
+{
+ ieee802154_xmit_error(hw, skb, IEEE802154_SYSTEM_ERROR);
+}
+EXPORT_SYMBOL(ieee802154_xmit_hw_error);
+
void ieee802154_stop_device(struct ieee802154_local *local)
{
flush_workqueue(local->workqueue);