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Lines 493-506
mppe_decompress(void *arg, unsigned char *ibuf, int isize, unsigned char *obuf,
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/* |
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/* |
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* Make sure we have enough room to decrypt the packet. |
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* Make sure we have enough room to decrypt the packet. |
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* Note that for our test we only subtract 1 byte whereas in |
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* To account for possible PFC we should only subtract 1 |
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* mppe_compress() we added 2 bytes (+MPPE_OVHD); |
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* byte whereas in mppe_compress() we added 2 bytes (+MPPE_OVHD); |
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* this is to account for possible PFC. |
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* However, we assume no PFC, thus subtracting 2 bytes. |
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*/ |
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*/ |
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if (osize < isize - MPPE_OVHD - 1) { |
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if (osize < isize - MPPE_OVHD - 2) { |
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printk(KERN_DEBUG "mppe_decompress[%d]: osize too small! " |
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printk(KERN_DEBUG "mppe_decompress[%d]: osize too small! " |
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"(have: %d need: %d)\n", state->unit, |
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"(have: %d need: %d)\n", state->unit, |
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osize, isize - MPPE_OVHD - 1); |
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osize, isize - MPPE_OVHD - 2); |
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return DECOMP_ERROR; |
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return DECOMP_ERROR; |
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} |
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} |
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osize = isize - MPPE_OVHD - 2; /* assume no PFC */ |
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osize = isize - MPPE_OVHD - 2; /* assume no PFC */ |
