[PATCH net-next 3/4] ice: use generic unrolled_count() macro

Alexander Lobakin
2025-02-06T18:30:41Z

ice, same as i40e, has a custom loop unrolling macros for unrolling
Tx descriptors filling on XSk xmit.
Replace ice defs with generic unrolled_count(), which is also more
convenient as it allows passing defines as its argument, not hardcoded
values, while the loop declaration will still be usual for-loop.

Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
---
drivers/net/ethernet/intel/ice/ice_xsk.h | 8 --------
drivers/net/ethernet/intel/ice/ice_xsk.c | 4 +++-
2 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_xsk.h b/drivers/net/ethernet/intel/ice/ice_xsk.h
index 45adeb513253..8dc5d55e26c5 100644
--- a/drivers/net/ethernet/intel/ice/ice_xsk.h
+++ b/drivers/net/ethernet/intel/ice/ice_xsk.h
@@ -7,14 +7,6 @@

#define PKTS_PER_BATCH 8

-#ifdef __clang__
-#define loop_unrolled_for _Pragma("clang loop unroll_count(8)") for
-#elif __GNUC__ >= 8
-#define loop_unrolled_for _Pragma("GCC unroll 8") for
-#else
-#define loop_unrolled_for for
-#endif
-
struct ice_vsi;

#ifdef CONFIG_XDP_SOCKETS
diff --git a/drivers/net/ethernet/intel/ice/ice_xsk.c b/drivers/net/ethernet/intel/ice/ice_xsk.c
index 8975d2971bc3..a3a4eaa17739 100644
--- a/drivers/net/ethernet/intel/ice/ice_xsk.c
+++ b/drivers/net/ethernet/intel/ice/ice_xsk.c
@@ -2,6 +2,7 @@
/* Copyright (c) 2019, Intel Corporation. */

#include <linux/bpf_trace.h>
+#include <linux/unroll.h>
#include <net/xdp_sock_drv.h>
#include <net/xdp.h>
#include "ice.h"
@@ -989,7 +990,8 @@ static void ice_xmit_pkt_batch(struct ice_tx_ring *xdp_ring,
struct ice_tx_desc *tx_desc;
u32 i;

- loop_unrolled_for(i = 0; i < PKTS_PER_BATCH; i++) {
+ unrolled_count(PKTS_PER_BATCH)
+ for (i = 0; i < PKTS_PER_BATCH; i++) {
dma_addr_t dma;

dma = xsk_buff_raw_get_dma(xsk_pool, descs[i].addr);
--
2.48.1