From: Rafał Miłecki Date: Mon, 10 Jul 2023 09:38:01 +0000 (+0200) Subject: bcm47xx: fix bgmac MTU patch filename X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=83aeb0bbd47638b42ee6cdda351d0c51e014d790;p=openwrt%2Fstaging%2Flinusw.git bcm47xx: fix bgmac MTU patch filename Fixes: 4970dd027bce ("bcm47xx: revert bgmac back to the old limited max frame size") Signed-off-by: Rafał Miłecki --- diff --git a/target/linux/bcm47xx/patches-5.15/701-bgmac-reduce-max-frame-size-to-support-just-MTU-1500.patch b/target/linux/bcm47xx/patches-5.15/701-bgmac-reduce-max-frame-size-to-support-just-MTU-1500.patch new file mode 100644 index 0000000000..3a2f4b06ed --- /dev/null +++ b/target/linux/bcm47xx/patches-5.15/701-bgmac-reduce-max-frame-size-to-support-just-MTU-1500.patch @@ -0,0 +1,33 @@ +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +Date: Fri, 10 Jun 2022 13:10:47 +0200 +Subject: [PATCH] bgmac: reduce max frame size to support just MTU 1500 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +bgmac allocates new replacement buffer before handling each received +frame. Allocating & DMA-preparing 9724 B each time consumes a lot of CPU +time. Ideally bgmac should just respect currently set MTU but it isn't +the case right now. For now just revert back to the old limited frame +size. + +This change bumps NAT masquarade speed by ~95%. + +Ref: 8c7da63978f1 ("bgmac: configure MTU and add support for frames beyond 8192 byte size") +Signed-off-by: Rafał Miłecki +--- + drivers/net/ethernet/broadcom/bgmac.h | 3 +-- + 1 file changed, 1 insertion(+), 2 deletions(-) + +--- a/drivers/net/ethernet/broadcom/bgmac.h ++++ b/drivers/net/ethernet/broadcom/bgmac.h +@@ -328,8 +328,7 @@ + #define BGMAC_RX_FRAME_OFFSET 30 /* There are 2 unused bytes between header and real data */ + #define BGMAC_RX_BUF_OFFSET (NET_SKB_PAD + NET_IP_ALIGN - \ + BGMAC_RX_FRAME_OFFSET) +-/* Jumbo frame size with FCS */ +-#define BGMAC_RX_MAX_FRAME_SIZE 9724 ++#define BGMAC_RX_MAX_FRAME_SIZE 1536 + #define BGMAC_RX_BUF_SIZE (BGMAC_RX_FRAME_OFFSET + BGMAC_RX_MAX_FRAME_SIZE) + #define BGMAC_RX_ALLOC_SIZE (SKB_DATA_ALIGN(BGMAC_RX_BUF_SIZE + BGMAC_RX_BUF_OFFSET) + \ + SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) diff --git a/target/linux/bcm47xx/patches-5.15/701-net-bgmac-connect-to-PHY-even-if-it-is-BGMAC_PHY_NOR.patch b/target/linux/bcm47xx/patches-5.15/701-net-bgmac-connect-to-PHY-even-if-it-is-BGMAC_PHY_NOR.patch deleted file mode 100644 index 3a2f4b06ed..0000000000 --- a/target/linux/bcm47xx/patches-5.15/701-net-bgmac-connect-to-PHY-even-if-it-is-BGMAC_PHY_NOR.patch +++ /dev/null @@ -1,33 +0,0 @@ -From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= -Date: Fri, 10 Jun 2022 13:10:47 +0200 -Subject: [PATCH] bgmac: reduce max frame size to support just MTU 1500 -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -bgmac allocates new replacement buffer before handling each received -frame. Allocating & DMA-preparing 9724 B each time consumes a lot of CPU -time. Ideally bgmac should just respect currently set MTU but it isn't -the case right now. For now just revert back to the old limited frame -size. - -This change bumps NAT masquarade speed by ~95%. - -Ref: 8c7da63978f1 ("bgmac: configure MTU and add support for frames beyond 8192 byte size") -Signed-off-by: Rafał Miłecki ---- - drivers/net/ethernet/broadcom/bgmac.h | 3 +-- - 1 file changed, 1 insertion(+), 2 deletions(-) - ---- a/drivers/net/ethernet/broadcom/bgmac.h -+++ b/drivers/net/ethernet/broadcom/bgmac.h -@@ -328,8 +328,7 @@ - #define BGMAC_RX_FRAME_OFFSET 30 /* There are 2 unused bytes between header and real data */ - #define BGMAC_RX_BUF_OFFSET (NET_SKB_PAD + NET_IP_ALIGN - \ - BGMAC_RX_FRAME_OFFSET) --/* Jumbo frame size with FCS */ --#define BGMAC_RX_MAX_FRAME_SIZE 9724 -+#define BGMAC_RX_MAX_FRAME_SIZE 1536 - #define BGMAC_RX_BUF_SIZE (BGMAC_RX_FRAME_OFFSET + BGMAC_RX_MAX_FRAME_SIZE) - #define BGMAC_RX_ALLOC_SIZE (SKB_DATA_ALIGN(BGMAC_RX_BUF_SIZE + BGMAC_RX_BUF_OFFSET) + \ - SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))