[PPP]: Fix PPP Deflate sequence number checking

068990ad · Paul Mackerras · David S. Miller · f1f080f8 · 068990ad
Commit 068990ad authored Jun 12, 2003 by Paul Mackerras Committed by David S. Miller Jun 12, 2003
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drivers/net/ppp_deflate.c drivers/net/ppp_deflate.c +2 -2

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--- a/drivers/net/ppp_deflate.c
+++ b/drivers/net/ppp_deflate.c
@@ -456,10 +456,10 @@ int z_decompress(void *arg, unsigned char *ibuf, int isize,

 	/* Check the sequence number. */
 	seq = (ibuf[PPP_HDRLEN] << 8) + ibuf[PPP_HDRLEN+1];
-	if (seq != state->seqno) {
+	if (seq != (state->seqno & 0xffff)) {
 		if (state->debug)
 			printk(KERN_DEBUG "z_decompress%d: bad seq # %d, expected %d\n",
-			       state->unit, seq, state->seqno);
+			       state->unit, seq, state->seqno & 0xffff);
 		return DECOMP_ERROR;
 	}
 	++state->seqno;