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[net-next,12/12] net: lan966x: refactor buffer reload function

Message ID 20240905-fdma-lan966x-v1-12-e083f8620165@microchip.com (mailing list archive)
State Accepted
Commit 89ba464fcf548d64bc7215dfe769f791330ae8b6
Delegated to: Netdev Maintainers
Headers show
Series net: lan966x: use the newly introduced FDMA library | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for 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: 16 this patch: 16
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 7 of 7 maintainers
netdev/build_clang success Errors and warnings before: 16 this patch: 16
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: 16 this patch: 16
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 35 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-09-07--06-00 (tests: 722)

Commit Message

Daniel Machon Sept. 5, 2024, 8:06 a.m. UTC 
Now that we store everything in the fdma structs, refactor
lan966x_fdma_reload() to store and restore the entire struct.

Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
 drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c b/drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c
index 4c8f83e4c5de..502670718104 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c
@@ -810,14 +810,11 @@  static int lan966x_qsys_sw_status(struct lan966x *lan966x)
 static int lan966x_fdma_reload(struct lan966x *lan966x, int new_mtu)
 {
 	struct page_pool *page_pool;
-	dma_addr_t rx_dma;
-	void *rx_dcbs;
-	u32 size;
+	struct fdma fdma_rx_old;
 	int err;
 
 	/* Store these for later to free them */
-	rx_dma = lan966x->rx.fdma.dma;
-	rx_dcbs = lan966x->rx.fdma.dcbs;
+	memcpy(&fdma_rx_old, &lan966x->rx.fdma, sizeof(struct fdma));
 	page_pool = lan966x->rx.page_pool;
 
 	napi_synchronize(&lan966x->napi);
@@ -833,9 +830,7 @@  static int lan966x_fdma_reload(struct lan966x *lan966x, int new_mtu)
 		goto restore;
 	lan966x_fdma_rx_start(&lan966x->rx);
 
-	size = sizeof(struct fdma_dcb) * lan966x->rx.fdma.n_dcbs;
-	size = ALIGN(size, PAGE_SIZE);
-	dma_free_coherent(lan966x->dev, size, rx_dcbs, rx_dma);
+	fdma_free_coherent(lan966x->dev, &fdma_rx_old);
 
 	page_pool_destroy(page_pool);
 
@@ -845,8 +840,7 @@  static int lan966x_fdma_reload(struct lan966x *lan966x, int new_mtu)
 	return err;
 restore:
 	lan966x->rx.page_pool = page_pool;
-	lan966x->rx.fdma.dma = rx_dma;
-	lan966x->rx.fdma.dcbs = rx_dcbs;
+	memcpy(&lan966x->rx.fdma, &fdma_rx_old, sizeof(struct fdma));
 	lan966x_fdma_rx_start(&lan966x->rx);
 
 	return err;