linux/net/sunrpc/auth_gss
Chuck Lever 65b80179f9 xprtrdma: No direct data placement with krb5i and krb5p
Direct data placement is not allowed when using flavors that
guarantee integrity or privacy. When such security flavors are in
effect, don't allow the use of Read and Write chunks for moving
individual data items. All messages larger than the inline threshold
are sent via Long Call or Long Reply.

On my systems (CX-3 Pro on FDR), for small I/O operations, the use
of Long messages adds only around 5 usecs of latency in each
direction.

Note that when integrity or encryption is used, the host CPU touches
every byte in these messages. Even if it could be used, data
movement offload doesn't buy much in this case.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-07-11 15:50:43 -04:00
..
auth_gss.c xprtrdma: No direct data placement with krb5i and krb5p 2016-07-11 15:50:43 -04:00
gss_generic_token.c sunrpc: eliminate RPC_DEBUG 2014-11-24 17:31:46 -05:00
gss_krb5_crypto.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2016-04-14 18:15:40 -07:00
gss_krb5_keys.c sunrpc: Use skcipher and ahash/shash 2016-01-27 20:36:01 +08:00
gss_krb5_mech.c xprtrdma: No direct data placement with krb5i and krb5p 2016-07-11 15:50:43 -04:00
gss_krb5_seal.c sunrpc: eliminate RPC_DEBUG 2014-11-24 17:31:46 -05:00
gss_krb5_seqnum.c sunrpc: Use skcipher and ahash/shash 2016-01-27 20:36:01 +08:00
gss_krb5_unseal.c sunrpc: eliminate RPC_DEBUG 2014-11-24 17:31:46 -05:00
gss_krb5_wrap.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
gss_mech_switch.c xprtrdma: No direct data placement with krb5i and krb5p 2016-07-11 15:50:43 -04:00
gss_rpc_upcall.c nfsd4: fix gss-proxy 4.1 mounts for some AD principals 2015-11-24 11:36:31 -07:00
gss_rpc_upcall.h Merge branch 'nfs-for-next' of git://linux-nfs.org/~trondmy/nfs-2.6 into for-3.10 2013-04-29 16:23:34 -04:00
gss_rpc_xdr.c svcrpc: fix potential GSSX_ACCEPT_SEC_CONTEXT decoding failures 2015-05-04 12:02:40 -04:00
gss_rpc_xdr.h sunrpc: eliminate RPC_DEBUG 2014-11-24 17:31:46 -05:00
Makefile SUNRPC: Add RPC based upcall mechanism for RPCGSS auth 2013-04-26 11:41:27 -04:00
svcauth_gss.c sunrpc: fix stripping of padded MIC tokens 2016-05-23 10:58:21 -04:00