Doron Roberts-Kedes 0927f71dbc net/tls: Calculate nsg for zerocopy path without skb_cow_data. ... decrypt_skb fails if the number of sg elements required to map it is greater than MAX_SKB_FRAGS. nsg must always be calculated, but skb_cow_data adds unnecessary memcpy's for the zerocopy case. The new function skb_nsg calculates the number of scatterlist elements required to map the skb without the extra overhead of skb_cow_data. This patch reduces memcpy by 50% on my encrypted NBD benchmarks. Reported-by: Vakul Garg <Vakul.garg@nxp.com> Reviewed-by: Vakul Garg <Vakul.garg@nxp.com> Tested-by: Vakul Garg <Vakul.garg@nxp.com> Signed-off-by: Doron Roberts-Kedes <doronrk@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-08-29 19:57:04 -07:00
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Kconfig	net/tls: Add generic NIC offload infrastructure	2018-05-01 09:42:47 -04:00
Makefile	net/tls: Add generic NIC offload infrastructure	2018-05-01 09:42:47 -04:00
tls_device_fallback.c	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2018-08-15 16:01:47 -07:00
tls_device.c	net/tls: Use kmemdup to simplify the code	2018-08-01 09:47:47 -07:00
tls_main.c	tls: possible hang when do_tcp_sendpages hits sndbuf is full case	2018-08-22 21:57:14 +02:00
tls_sw.c	net/tls: Calculate nsg for zerocopy path without skb_cow_data.	2018-08-29 19:57:04 -07:00