kernel/linux.git/include/net/tls.h, branch v4.14.65

net/tls: Don't recursively call push_record during tls_write_space callbacks

2018-05-19T08:20:24+00:00

[ Upstream commit c212d2c7fc4736d49be102fb7a1a545cdc2f1fea ] It is reported that in some cases, write_space may be called in do_tcp_sendpages, such that we recursively invoke do_tcp_sendpages again: [ 660.468802] ? do_tcp_sendpages+0x8d/0x580 [ 660.468826] ? tls_push_sg+0x74/0x130 [tls] [ 660.468852] ? tls_push_record+0x24a/0x390 [tls] [ 660.468880] ? tls_write_space+0x6a/0x80 [tls] ... tls_push_sg already does a loop over all sending sg's, so ignore any tls_write_space notifications until we are done sending. We then have to call the previous write_space to wake up poll() waiters after we are done with the send loop. Reported-by: Andre Tomt Signed-off-by: Dave Watson Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

net/tls: Fix inverted error codes to avoid endless loop

2018-01-31T13:03:45+00:00

[ Upstream commit 30be8f8dba1bd2aff73e8447d59228471233a3d4 ] sendfile() calls can hang endless with using Kernel TLS if a socket error occurs. Socket error codes must be inverted by Kernel TLS before returning because they are stored with positive sign. If returned non-inverted they are interpreted as number of bytes sent, causing endless looping of the splice mechanic behind sendfile(). Signed-off-by: Robert Hering Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

uapi: fix linux/tls.h userspace compilation error

2017-11-30T08:40:40+00:00

commit b9f3eb499d84f8d4adcb2f9212ec655700b28228 upstream. Move inclusion of a private kernel header from uapi/linux/tls.h to its only user - net/tls.h, to fix the following linux/tls.h userspace compilation error: /usr/include/linux/tls.h:41:21: fatal error: net/tcp.h: No such file or directory As to this point uapi/linux/tls.h was totaly unusuable for userspace, cleanup this header file further by moving other redundant includes to net/tls.h. Fixes: 3c4d7559159b ("tls: kernel TLS support") Signed-off-by: Dmitry V. Levin Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

tls: kernel TLS support

2017-06-15T16:12:40+00:00

Software implementation of transport layer security, implemented using ULP infrastructure. tcp proto_ops are replaced with tls equivalents of sendmsg and sendpage. Only symmetric crypto is done in the kernel, keys are passed by setsockopt after the handshake is complete. All control messages are supported via CMSG data - the actual symmetric encryption is the same, just the message type needs to be passed separately. For user API, please see Documentation patch. Pieces that can be shared between hw and sw implementation are in tls_main.c Signed-off-by: Boris Pismenny Signed-off-by: Ilya Lesokhin Signed-off-by: Aviad Yehezkel Signed-off-by: Dave Watson Signed-off-by: David S. Miller