linux/net/ethtool
Ahmed Zaki 13e59344fb net: ethtool: add support for symmetric-xor RSS hash
Symmetric RSS hash functions are beneficial in applications that monitor
both Tx and Rx packets of the same flow (IDS, software firewalls, ..etc).
Getting all traffic of the same flow on the same RX queue results in
higher CPU cache efficiency.

A NIC that supports "symmetric-xor" can achieve this RSS hash symmetry
by XORing the source and destination fields and pass the values to the
RSS hash algorithm.

The user may request RSS hash symmetry for a specific algorithm, via:

    # ethtool -X eth0 hfunc <hash_alg> symmetric-xor

or turn symmetry off (asymmetric) by:

    # ethtool -X eth0 hfunc <hash_alg>

The specific fields for each flow type should then be specified as usual
via:
    # ethtool -N|-U eth0 rx-flow-hash <flow_type> s|d|f|n

Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Link: https://lore.kernel.org/r/20231213003321.605376-4-ahmed.zaki@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-12-13 22:07:16 -08:00
..
bitset.c Revert "ethtool: Fix mod state of verbose no_mask bitset" 2023-10-19 09:27:12 -07:00
bitset.h ethtool: add ethnl_parse_bitset() helper 2020-03-12 15:32:32 -07:00
cabletest.c net: delete extra space and tab in blank line 2022-07-25 19:38:31 -07:00
channels.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
coalesce.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
common.c net: ethtool: pass a pointer to parameters to get/set_rxfh ethtool ops 2023-12-13 22:07:16 -08:00
common.h net: partial revert of the "Make timestamping selectable: series 2023-11-18 18:42:37 -08:00
debug.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
eee.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
eeprom.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
features.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
fec.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
ioctl.c net: ethtool: add support for symmetric-xor RSS hash 2023-12-13 22:07:16 -08:00
linkinfo.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
linkmodes.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
linkstate.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
Makefile net: partial revert of the "Make timestamping selectable: series 2023-11-18 18:42:37 -08:00
mm.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
module.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
netlink.c ethtool: don't propagate EOPNOTSUPP from dumps 2023-11-29 08:43:27 -08:00
netlink.h net: partial revert of the "Make timestamping selectable: series 2023-11-18 18:42:37 -08:00
pause.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
phc_vclocks.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
plca.c ethtool: plca: fix plca enable data type while parsing the value 2023-10-03 07:18:58 -07:00
privflags.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
pse-pd.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
rings.c ethtool: add SET for TCP_DATA_SPLIT ringparam 2023-12-13 18:22:02 -08:00
rss.c net: ethtool: add support for symmetric-xor RSS hash 2023-12-13 22:07:16 -08:00
stats.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
strset.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
tsinfo.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00
tunnels.c genetlink: use attrs from struct genl_info 2023-08-15 15:00:45 -07:00
wol.c ethtool: netlink: always pass genl_info to .prepare_data 2023-08-15 15:01:03 -07:00