X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fcryptodevs%2Fkasumi.rst;h=738ecee07b4de0addf3d16f3aae75f22dbe1cd75;hb=4792d3ea858ef636b4ee8a34e1fcd767174f056a;hp=bff9321e33b47255bd8f09b20960dff7125a1cc9;hpb=2142e6dc71b46d1ff4cd03c12a0153e30d3a1fa3;p=dpdk.git

diff --git a/doc/guides/cryptodevs/kasumi.rst b/doc/guides/cryptodevs/kasumi.rst
index bff9321e33..738ecee07b 100644
--- a/doc/guides/cryptodevs/kasumi.rst
+++ b/doc/guides/cryptodevs/kasumi.rst
@@ -70,6 +70,18 @@ on their system before building DPDK::
 
    make
 
+**Note**: When encrypting with KASUMI F8, by default the library
+encrypts full blocks of 8 bytes, regardless the number of bytes to
+be encrypted provided (which leads to a possible buffer overflow).
+To avoid this situation, it is necessary not to pass
+3GPP_SAFE_BUFFERS as a compilation flag.
+Also, this is required when using chained operations
+(cipher-then-auth/auth-then-cipher).
+For this, in the Makefile of the library, make sure that this flag
+is commented out::
+
+  #EXTRA_CFLAGS  += -D_3GPP_SAFE_BUFFERS
+
 **Note**: To build the PMD as a shared library, the libsso_kasumi
 library must be built as follows::