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| H A D | skbuff.c | 2544af03 Wed May 29 10:13:48 CDT 2019 Matteo Croce <mcroce@redhat.com> net: avoid indirect calls in L4 checksum calculation
Commit 283c16a2dfd3 ("indirect call wrappers: helpers to speed-up
indirect calls of builtin") introduces some macros to avoid doing
indirect calls.
Use these helpers to remove two indirect calls in the L4 checksum
calculation for devices which don't have hardware support for it.
As a test I generate packets with pktgen out to a dummy interface
with HW checksumming disabled, to have the checksum calculated in
every sent packet.
The packet rate measured with an i7-6700K CPU and a single pktgen
thread raised from 6143 to 6608 Kpps, an increase by 7.5%
Suggested-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2544af03 Wed May 29 10:13:48 CDT 2019 Matteo Croce <mcroce@redhat.com> net: avoid indirect calls in L4 checksum calculation
Commit 283c16a2dfd3 ("indirect call wrappers: helpers to speed-up
indirect calls of builtin") introduces some macros to avoid doing
indirect calls.
Use these helpers to remove two indirect calls in the L4 checksum
calculation for devices which don't have hardware support for it.
As a test I generate packets with pktgen out to a dummy interface
with HW checksumming disabled, to have the checksum calculated in
every sent packet.
The packet rate measured with an i7-6700K CPU and a single pktgen
thread raised from 6143 to 6608 Kpps, an increase by 7.5%
Suggested-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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