um: Add checks to mtu parameter parsing
Adds a sanity check to the parsing of mtu command line param Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at>alistair/sunxi64-5.4-dsi
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77f1073c2c
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5853193103
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@ -121,7 +121,8 @@ static int get_mtu(struct arglist *def)
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if (mtu != NULL) {
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if (mtu != NULL) {
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if (kstrtoul(mtu, 10, &result) == 0)
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if (kstrtoul(mtu, 10, &result) == 0)
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return result;
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if ((result < (1 << 16) - 1) && (result >= 576))
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return result;
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}
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}
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return ETH_MAX_PACKET;
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return ETH_MAX_PACKET;
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}
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}
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