diff mbox series

[iwl-next,v9,1/6] igb: Remove static qualifiers

Message ID 20241018-b4-igb_zero_copy-v9-1-da139d78d796@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 warning WARNING: line length of 84 exceeds 80 columns
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. 18, 2024, 8:39 a.m. UTC 
From: Sriram Yagnaraman <sriram.yagnaraman@est.tech>

Remove static qualifiers on the following functions to be able to call
from XSK specific file that is added in the later patches:
- igb_xdp_tx_queue_mapping()
- igb_xdp_ring_update_tail()
- igb_clean_tx_ring()
- igb_clean_rx_ring()
- igb_xdp_xmit_back()
- igb_process_skb_fields()

While at it, inline igb_xdp_tx_queue_mapping() and
igb_xdp_ring_update_tail(). These functions are small enough and used in
XDP hot paths.

Signed-off-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
[Kurt: Split patches, inline small XDP functions]
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
---
 drivers/net/ethernet/intel/igb/igb.h      | 29 ++++++++++++++++++++++++
 drivers/net/ethernet/intel/igb/igb_main.c | 37 +++++--------------------------
 2 files changed, 35 insertions(+), 31 deletions(-)

Comments

Kuruvinakunnel, George Oct. 26, 2024, 4:57 p.m. UTC | #1 
> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of
> Kurt Kanzenbach
> Sent: Friday, October 18, 2024 1:40 AM
> To: Nguyen, Anthony L <anthony.l.nguyen@intel.com>; Kitszel, Przemyslaw
> <przemyslaw.kitszel@intel.com>
> Cc: David S. Miller <davem@davemloft.net>; Eric Dumazet
> <edumazet@google.com>; Jakub Kicinski <kuba@kernel.org>; Paolo Abeni
> <pabeni@redhat.com>; Alexei Starovoitov <ast@kernel.org>; Daniel
> Borkmann <daniel@iogearbox.net>; Jesper Dangaard Brouer
> <hawk@kernel.org>; John Fastabend <john.fastabend@gmail.com>; Richard
> Cochran <richardcochran@gmail.com>; Sriram Yagnaraman
> <sriram.yagnaraman@ericsson.com>; Benjamin Steinke
> <benjamin.steinke@woks-audio.com>; Sebastian Andrzej Siewior
> <bigeasy@linutronix.de>; Fijalkowski, Maciej <maciej.fijalkowski@intel.com>;
> intel-wired-lan@lists.osuosl.org; netdev@vger.kernel.org;
> bpf@vger.kernel.org; Sriram Yagnaraman <sriram.yagnaraman@est.tech>;
> Kurt Kanzenbach <kurt@linutronix.de>
> Subject: [Intel-wired-lan] [PATCH iwl-next v9 1/6] igb: Remove static qualifiers
> 
> From: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
> 
> Remove static qualifiers on the following functions to be able to call from XSK
> specific file that is added in the later patches:
> - igb_xdp_tx_queue_mapping()
> - igb_xdp_ring_update_tail()
> - igb_clean_tx_ring()
> - igb_clean_rx_ring()
> - igb_xdp_xmit_back()
> - igb_process_skb_fields()
> 
> While at it, inline igb_xdp_tx_queue_mapping() and
> igb_xdp_ring_update_tail(). These functions are small enough and used in XDP
> hot paths.
> 
> Signed-off-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
> [Kurt: Split patches, inline small XDP functions]
> Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
> Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
> ---
>  drivers/net/ethernet/intel/igb/igb.h      | 29 ++++++++++++++++++++++++
>  drivers/net/ethernet/intel/igb/igb_main.c | 37 +++++--------------------------
>  2 files changed, 35 insertions(+), 31 deletions(-)
> 

Tested-by: George Kuruvinakunnel <george.kuruvinakunnel@intel.com>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h
index 3c2dc7bdebb5..1bfe703e73d9 100644
--- a/drivers/net/ethernet/intel/igb/igb.h
+++ b/drivers/net/ethernet/intel/igb/igb.h
@@ -18,6 +18,7 @@ 
 #include <linux/i2c-algo-bit.h>
 #include <linux/pci.h>
 #include <linux/mdio.h>
+#include <linux/lockdep.h>
 
 #include <net/xdp.h>
 
@@ -731,12 +732,18 @@  int igb_setup_tx_resources(struct igb_ring *);
 int igb_setup_rx_resources(struct igb_ring *);
 void igb_free_tx_resources(struct igb_ring *);
 void igb_free_rx_resources(struct igb_ring *);
+void igb_clean_tx_ring(struct igb_ring *tx_ring);
+void igb_clean_rx_ring(struct igb_ring *rx_ring);
 void igb_configure_tx_ring(struct igb_adapter *, struct igb_ring *);
 void igb_configure_rx_ring(struct igb_adapter *, struct igb_ring *);
 void igb_setup_tctl(struct igb_adapter *);
 void igb_setup_rctl(struct igb_adapter *);
 void igb_setup_srrctl(struct igb_adapter *, struct igb_ring *);
 netdev_tx_t igb_xmit_frame_ring(struct sk_buff *, struct igb_ring *);
+int igb_xdp_xmit_back(struct igb_adapter *adapter, struct xdp_buff *xdp);
+void igb_process_skb_fields(struct igb_ring *rx_ring,
+			    union e1000_adv_rx_desc *rx_desc,
+			    struct sk_buff *skb);
 void igb_alloc_rx_buffers(struct igb_ring *, u16);
 void igb_update_stats(struct igb_adapter *);
 bool igb_has_link(struct igb_adapter *adapter);
@@ -797,6 +804,28 @@  static inline struct netdev_queue *txring_txq(const struct igb_ring *tx_ring)
 	return netdev_get_tx_queue(tx_ring->netdev, tx_ring->queue_index);
 }
 
+/* This function assumes __netif_tx_lock is held by the caller. */
+static inline void igb_xdp_ring_update_tail(struct igb_ring *ring)
+{
+	lockdep_assert_held(&txring_txq(ring)->_xmit_lock);
+
+	/* Force memory writes to complete before letting h/w know there
+	 * are new descriptors to fetch.
+	 */
+	wmb();
+	writel(ring->next_to_use, ring->tail);
+}
+
+static inline struct igb_ring *igb_xdp_tx_queue_mapping(struct igb_adapter *adapter)
+{
+	unsigned int r_idx = smp_processor_id();
+
+	if (r_idx >= adapter->num_tx_queues)
+		r_idx = r_idx % adapter->num_tx_queues;
+
+	return adapter->tx_ring[r_idx];
+}
+
 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 f1d088168723..5a44867bcb26 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -33,7 +33,6 @@ 
 #include <linux/bpf_trace.h>
 #include <linux/pm_runtime.h>
 #include <linux/etherdevice.h>
-#include <linux/lockdep.h>
 #ifdef CONFIG_IGB_DCA
 #include <linux/dca.h>
 #endif
@@ -116,8 +115,6 @@  static void igb_configure_tx(struct igb_adapter *);
 static void igb_configure_rx(struct igb_adapter *);
 static void igb_clean_all_tx_rings(struct igb_adapter *);
 static void igb_clean_all_rx_rings(struct igb_adapter *);
-static void igb_clean_tx_ring(struct igb_ring *);
-static void igb_clean_rx_ring(struct igb_ring *);
 static void igb_set_rx_mode(struct net_device *);
 static void igb_update_phy_info(struct timer_list *);
 static void igb_watchdog(struct timer_list *);
@@ -2915,29 +2912,7 @@  static int igb_xdp(struct net_device *dev, struct netdev_bpf *xdp)
 	}
 }
 
-/* This function assumes __netif_tx_lock is held by the caller. */
-static void igb_xdp_ring_update_tail(struct igb_ring *ring)
-{
-	lockdep_assert_held(&txring_txq(ring)->_xmit_lock);
-
-	/* Force memory writes to complete before letting h/w know there
-	 * are new descriptors to fetch.
-	 */
-	wmb();
-	writel(ring->next_to_use, ring->tail);
-}
-
-static struct igb_ring *igb_xdp_tx_queue_mapping(struct igb_adapter *adapter)
-{
-	unsigned int r_idx = smp_processor_id();
-
-	if (r_idx >= adapter->num_tx_queues)
-		r_idx = r_idx % adapter->num_tx_queues;
-
-	return adapter->tx_ring[r_idx];
-}
-
-static int igb_xdp_xmit_back(struct igb_adapter *adapter, struct xdp_buff *xdp)
+int igb_xdp_xmit_back(struct igb_adapter *adapter, struct xdp_buff *xdp)
 {
 	struct xdp_frame *xdpf = xdp_convert_buff_to_frame(xdp);
 	int cpu = smp_processor_id();
@@ -4884,7 +4859,7 @@  static void igb_free_all_tx_resources(struct igb_adapter *adapter)
  *  igb_clean_tx_ring - Free Tx Buffers
  *  @tx_ring: ring to be cleaned
  **/
-static void igb_clean_tx_ring(struct igb_ring *tx_ring)
+void igb_clean_tx_ring(struct igb_ring *tx_ring)
 {
 	u16 i = tx_ring->next_to_clean;
 	struct igb_tx_buffer *tx_buffer = &tx_ring->tx_buffer_info[i];
@@ -5003,7 +4978,7 @@  static void igb_free_all_rx_resources(struct igb_adapter *adapter)
  *  igb_clean_rx_ring - Free Rx Buffers per Queue
  *  @rx_ring: ring to free buffers from
  **/
-static void igb_clean_rx_ring(struct igb_ring *rx_ring)
+void igb_clean_rx_ring(struct igb_ring *rx_ring)
 {
 	u16 i = rx_ring->next_to_clean;
 
@@ -8782,9 +8757,9 @@  static bool igb_cleanup_headers(struct igb_ring *rx_ring,
  *  order to populate the hash, checksum, VLAN, timestamp, protocol, and
  *  other fields within the skb.
  **/
-static void igb_process_skb_fields(struct igb_ring *rx_ring,
-				   union e1000_adv_rx_desc *rx_desc,
-				   struct sk_buff *skb)
+void igb_process_skb_fields(struct igb_ring *rx_ring,
+			    union e1000_adv_rx_desc *rx_desc,
+			    struct sk_buff *skb)
 {
 	struct net_device *dev = rx_ring->netdev;