X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=pppd%2Fdemand.c;h=d610d69ac282ea83d9ca841bdea21b7c6663906a;hb=607d8eadccfd62c1fa84a36bd1440bd48b4e55ca;hp=3e320798355de806223d0dd11896e19892da0930;hpb=f7307b3f74f9a2fd64acc77b0c884ed1cc9afe56;p=ppp.git

diff --git a/pppd/demand.c b/pppd/demand.c
index 3e32079..d610d69 100644
--- a/pppd/demand.c
+++ b/pppd/demand.c
@@ -210,6 +210,7 @@ static u_short fcstab[256] = {
 	0xf78f,	0xe606,	0xd49d,	0xc514,	0xb1ab,	0xa022,	0x92b9,	0x8330,
 	0x7bc7,	0x6a4e,	0x58d5,	0x495c,	0x3de3,	0x2c6a,	0x1ef1,	0x0f78
 };
+#define PPP_FCS(fcs, c)	(((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
 
 /*
  * loop_chars - process characters received from the loopback.