diff mbox series

[wpan-next,v3,04/11] net: mac802154: Save a global error code on transmissions

Message ID 20220303182508.288136-5-miquel.raynal@bootlin.com (mailing list archive)
State Awaiting Upstream
Delegated to: Netdev Maintainers
Headers show
Series ieee802154: Better Tx error handling | expand

Checks

Context Check Description
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 6 this patch: 0
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 6 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 6 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 20 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/tree_selection success Guessing tree name failed - patch did not apply

Commit Message

Miquel Raynal March 3, 2022, 6:25 p.m. UTC 
So far no error is returned from a failing transmission. However it
might sometimes be useful, and particularly easy to use during sync
transfers (for certain MLME commands). Let's create an internal variable
for that, global to the device. Right now only success are registered,
which is rather useless, but soon we will have more situations filling
this field.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 net/mac802154/ieee802154_i.h | 2 ++
 net/mac802154/util.c         | 5 ++++-
 2 files changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/mac802154/ieee802154_i.h b/net/mac802154/ieee802154_i.h
index 702560acc8ce..1381e6a5e180 100644
--- a/net/mac802154/ieee802154_i.h
+++ b/net/mac802154/ieee802154_i.h
@@ -56,6 +56,8 @@  struct ieee802154_local {
 
 	struct sk_buff *tx_skb;
 	struct work_struct tx_work;
+	/* A negative Linux error code or a null/positive MLME error status */
+	int tx_result;
 };
 
 enum {
diff --git a/net/mac802154/util.c b/net/mac802154/util.c
index 37d2520804e3..ec523335336c 100644
--- a/net/mac802154/util.c
+++ b/net/mac802154/util.c
@@ -58,8 +58,11 @@  enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer)
 void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
 			      bool ifs_handling)
 {
+	struct ieee802154_local *local = hw_to_local(hw);
+
+	local->tx_result = IEEE802154_SUCCESS;
+
 	if (ifs_handling) {
-		struct ieee802154_local *local = hw_to_local(hw);
 		u8 max_sifs_size;
 
 		/* If transceiver sets CRC on his own we need to use lifs