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Diffstat (limited to 'doc/guides/cryptodevs/snow3g.rst')
| -rw-r--r-- | doc/guides/cryptodevs/snow3g.rst | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/doc/guides/cryptodevs/snow3g.rst b/doc/guides/cryptodevs/snow3g.rst index 12b6c4af..8914e29c 100644 --- a/doc/guides/cryptodevs/snow3g.rst +++ b/doc/guides/cryptodevs/snow3g.rst @@ -69,6 +69,17 @@ on their system before building DPDK:: make snow3G +**Note**: When encrypting with SNOW3G UEA2, by default the library +encrypts blocks of 4 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. +For this, in the Makefile of the library, make sure that this flag +is commented out.:: + + #EXTRA_CFLAGS += -D_3GPP_SAFE_BUFFERS + + Initialization -------------- @@ -100,4 +111,5 @@ Example: .. code-block:: console - ./l2fwd-crypto -l 6 -n 4 --vdev="crypto_snow3g,socket_id=1,max_nb_sessions=128" + ./l2fwd-crypto -l 1 -n 4 --vdev="crypto_snow3g,socket_id=0,max_nb_sessions=128" \ + -- -p 1 --cdev SW --chain CIPHER_ONLY --cipher_algo "snow3g-uea2" |