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Fix checksum calculations. This should fix the network problems

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in current where all packets were returning with bad checksums.
(observed with netstat -s).

Reviewed by:	alfred
This commit is contained in:
Paul Saab 2000-05-07 16:41:15 +00:00
parent 88577b0806
commit 274254e1f1
2 changed files with 2 additions and 4 deletions
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3
sys/alpha/alpha/in_cksum.c
View File

@ -69,7 +69,6 @@
sum = l_util.s[0] + l_util.s[1]; \
ADDCARRY(sum); \
}
#define INVERT sum == 0xffff ? sum : ~sum & 0xffff
static const u_int32_t in_masks[] = {
/*0 bytes*/ /*1 byte*/ /*2 bytes*/ /*3 bytes*/
@ -236,7 +235,7 @@ skip_start:
len -= mlen;
}
REDUCE16;
return (INVERT);
return (~sum & 0xffff);
}
u_int in_cksum_hdr(ip)

3
sys/i386/i386/in_cksum.c
View File

@ -57,7 +57,6 @@
#undef ADDCARRY
#define ADDCARRY(x) if ((x) > 0xffff) (x) -= 0xffff
#define REDUCE {sum = (sum & 0xffff) + (sum >> 16); ADDCARRY(sum);}
#define INVERT sum == 0xffff ? sum : ~sum & 0xffff
/*
* Thanks to gcc we don't have to guess
@ -257,5 +256,5 @@ skip_start:
sum += su.s;
}
REDUCE;
return (INVERT);
return (~sum & 0xffff);
}