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authorJose Abreu <Jose.Abreu@synopsys.com>2019-12-18 11:17:42 +0100
committerDavid S. Miller <davem@davemloft.net>2019-12-18 21:04:18 +0100
commitb2f3a481c4cd62f78391b836b64c0a6e72b503d2 (patch)
treeb67389cf016c9fb636004cb02b28486903563977 /drivers
parentnet: stmmac: 16KB buffer must be 16 byte aligned (diff)
downloadlinux-b2f3a481c4cd62f78391b836b64c0a6e72b503d2.tar.xz
linux-b2f3a481c4cd62f78391b836b64c0a6e72b503d2.zip
net: stmmac: Enable 16KB buffer size
XGMAC supports maximum MTU that can go to 16KB. Lets add this check in the calculation of RX buffer size. Fixes: 7ac6653a085b ("stmmac: Move the STMicroelectronics driver") Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/stmmac_main.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index f507a9bee15b..1cb466dd5b3f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1109,7 +1109,9 @@ static int stmmac_set_bfsize(int mtu, int bufsize)
{
int ret = bufsize;
- if (mtu >= BUF_SIZE_4KiB)
+ if (mtu >= BUF_SIZE_8KiB)
+ ret = BUF_SIZE_16KiB;
+ else if (mtu >= BUF_SIZE_4KiB)
ret = BUF_SIZE_8KiB;
else if (mtu >= BUF_SIZE_2KiB)
ret = BUF_SIZE_4KiB;