| From | Ben Hutchings <> | Date | Fri, 24 Apr 2020 00:06:02 +0100 | Subject | [PATCH 3.16 135/245] net: stmmac: Enable 16KB buffer size |
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3.16.83-rc1 review patch. If anyone has any objections, please let me know.
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From: Jose Abreu <Jose.Abreu@synopsys.com>
commit b2f3a481c4cd62f78391b836b64c0a6e72b503d2 upstream.
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> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -904,7 +904,9 @@ static int stmmac_set_bfsize(int mtu, in { 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;
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