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Diffstat (limited to 'Documentation/networking/tls-offload.rst')
| -rw-r--r-- | Documentation/networking/tls-offload.rst | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/networking/tls-offload.rst b/Documentation/networking/tls-offload.rst index 37773da2bee5..0f55c6d540f9 100644 --- a/Documentation/networking/tls-offload.rst +++ b/Documentation/networking/tls-offload.rst @@ -524,7 +524,13 @@ on TCP retransmissions to handle corner cases is not acceptable. TLS device features ------------------- -Drivers should ignore the changes to TLS the device feature flags. +Drivers should ignore the changes to the TLS device feature flags. These flags will be acted upon accordingly by the core ``ktls`` code. TLS device feature flags only control adding of new TLS connection offloads, old connections will remain active after flags are cleared. + +TLS encryption cannot be offloaded to devices without checksum calculation +offload. Hence, TLS TX device feature flag requires NETIF_F_HW_CSUM being set. +Disabling the latter implies clearing the former. Disabling TX checksum offload +should not affect old connections, and drivers should make sure checksum +calculation does not break for them. |