diff mbox series

[iwl-next,v8,2/6] igb: Introduce igb_xdp_is_enabled()

Message ID 20241011-b4-igb_zero_copy-v8-2-83862f726a9e@linutronix.de (mailing list archive)
State Awaiting Upstream
Delegated to: Netdev Maintainers
Headers show
Series igb: Add support for AF_XDP zero-copy | expand

Checks

Context Check Description
netdev/series_format warning Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 5 this patch: 5
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 12 of 12 maintainers
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 4 this patch: 4
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 37 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 38 this patch: 38
netdev/source_inline success Was 0 now: 0

Commit Message

Kurt Kanzenbach Oct. 11, 2024, 9:01 a.m. UTC 
From: Sriram Yagnaraman <sriram.yagnaraman@est.tech>

Introduce igb_xdp_is_enabled() to check if an XDP program is assigned to
the device. Use that wherever xdp_prog is read and evaluated.

Signed-off-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
[Kurt: Split patches and use READ_ONCE()]
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
---
 drivers/net/ethernet/intel/igb/igb.h      | 5 +++++
 drivers/net/ethernet/intel/igb/igb_main.c | 8 +++++---
 2 files changed, 10 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h
index 1bfe703e73d9..6e2b61ecff68 100644
--- a/drivers/net/ethernet/intel/igb/igb.h
+++ b/drivers/net/ethernet/intel/igb/igb.h
@@ -826,6 +826,11 @@  static inline struct igb_ring *igb_xdp_tx_queue_mapping(struct igb_adapter *adap
 	return adapter->tx_ring[r_idx];
 }
 
+static inline bool igb_xdp_is_enabled(struct igb_adapter *adapter)
+{
+	return !!READ_ONCE(adapter->xdp_prog);
+}
+
 int igb_add_filter(struct igb_adapter *adapter,
 		   struct igb_nfc_filter *input);
 int igb_erase_filter(struct igb_adapter *adapter,
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 5a44867bcb26..fc30966282c5 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -2926,7 +2926,8 @@  int igb_xdp_xmit_back(struct igb_adapter *adapter, struct xdp_buff *xdp)
 	/* During program transitions its possible adapter->xdp_prog is assigned
 	 * but ring has not been configured yet. In this case simply abort xmit.
 	 */
-	tx_ring = adapter->xdp_prog ? igb_xdp_tx_queue_mapping(adapter) : NULL;
+	tx_ring = igb_xdp_is_enabled(adapter) ?
+		igb_xdp_tx_queue_mapping(adapter) : NULL;
 	if (unlikely(!tx_ring))
 		return IGB_XDP_CONSUMED;
 
@@ -2959,7 +2960,8 @@  static int igb_xdp_xmit(struct net_device *dev, int n,
 	/* During program transitions its possible adapter->xdp_prog is assigned
 	 * but ring has not been configured yet. In this case simply abort xmit.
 	 */
-	tx_ring = adapter->xdp_prog ? igb_xdp_tx_queue_mapping(adapter) : NULL;
+	tx_ring = igb_xdp_is_enabled(adapter) ?
+		igb_xdp_tx_queue_mapping(adapter) : NULL;
 	if (unlikely(!tx_ring))
 		return -ENXIO;
 
@@ -6593,7 +6595,7 @@  static int igb_change_mtu(struct net_device *netdev, int new_mtu)
 	struct igb_adapter *adapter = netdev_priv(netdev);
 	int max_frame = new_mtu + IGB_ETH_PKT_HDR_PAD;
 
-	if (adapter->xdp_prog) {
+	if (igb_xdp_is_enabled(adapter)) {
 		int i;
 
 		for (i = 0; i < adapter->num_rx_queues; i++) {