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net: stmmac: Batch set RX OWN flag and other flags

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Minimize access to the RX descriptor by collecting all the flags in a
local variable and then updating the descriptor at once.

Signed-off-by: Tan En De <ende.tan@starfivetech.com>
Link: https://patch.msgid.link/20240831011114.2065912-1-ende.tan@starfivetech.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Tan En De 2024-08-31 09:11:14 +08:00 committed by Paolo Abeni
parent 43b7724487
commit d209598994
2 changed files with 8 additions and 4 deletions
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6
drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
View File

@ -186,10 +186,12 @@ static void dwmac4_set_tx_owner(struct dma_desc *p)
static void dwmac4_set_rx_owner(struct dma_desc *p, int disable_rx_ic) static void dwmac4_set_rx_owner(struct dma_desc *p, int disable_rx_ic)
{ {
p->des3 |= cpu_to_le32(RDES3_OWN | RDES3_BUFFER1_VALID_ADDR); u32 flags = (RDES3_OWN | RDES3_BUFFER1_VALID_ADDR);
if (!disable_rx_ic) if (!disable_rx_ic)
p->des3 |= cpu_to_le32(RDES3_INT_ON_COMPLETION_EN); flags |= RDES3_INT_ON_COMPLETION_EN;
p->des3 |= cpu_to_le32(flags);
} }
static int dwmac4_get_tx_ls(struct dma_desc *p) static int dwmac4_get_tx_ls(struct dma_desc *p)

6
drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
View File

@ -56,10 +56,12 @@ static void dwxgmac2_set_tx_owner(struct dma_desc *p)
static void dwxgmac2_set_rx_owner(struct dma_desc *p, int disable_rx_ic) static void dwxgmac2_set_rx_owner(struct dma_desc *p, int disable_rx_ic)
{ {
p->des3 |= cpu_to_le32(XGMAC_RDES3_OWN); u32 flags = XGMAC_RDES3_OWN;
if (!disable_rx_ic) if (!disable_rx_ic)
p->des3 |= cpu_to_le32(XGMAC_RDES3_IOC); flags |= XGMAC_RDES3_IOC;
p->des3 |= cpu_to_le32(flags);
} }
static int dwxgmac2_get_tx_ls(struct dma_desc *p) static int dwxgmac2_get_tx_ls(struct dma_desc *p)