In case the compression result is the same size as the orignal version,
the compression was useless as well. Make sure to not update the data and return, else we would waste resources when decompressing. This also avoids the copyback() changing data other consumers like xform_ipcomp.c would have ignored because of no win and sent out without noting that compression was used, resulting in invalid packets at the receiver. MFC after: 5 days
This commit is contained in:
parent
10229cd109
commit
df4dece102
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=199906
@ -552,7 +552,7 @@ swcr_compdec(struct cryptodesc *crd, struct swcr_data *sw,
|
||||
sw->sw_size = result;
|
||||
/* Check the compressed size when doing compression */
|
||||
if (crd->crd_flags & CRD_F_COMP) {
|
||||
if (result > crd->crd_len) {
|
||||
if (result >= crd->crd_len) {
|
||||
/* Compression was useless, we lost time */
|
||||
free(out, M_CRYPTO_DATA);
|
||||
return 0;
|
||||
|
Loading…
Reference in New Issue
Block a user