diff options
| author | Eric Dumazet <edumazet@google.com> | 2026-03-02 18:14:32 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-04 16:54:10 -0800 |
| commit | a435163d3100b044d620990772a5ce1684ff02ca (patch) | |
| tree | 40ce3bd11cefc6f440d0664f68a0d62853630243 /include/net | |
| parent | b2cc61857e3cf7e103089dd54c0548d54a6ae381 (diff) | |
net-sysfs: use rps_tag_ptr and remove metadata from rps_dev_flow_table
Instead of storing the @log at the beginning of rps_dev_flow_table
use 5 low order bits of the rps_tag_ptr to store the log of the size.
This removes a potential cache line miss (for light traffic).
This allows us to switch to one high-order allocation instead of vmalloc()
when CONFIG_RFS_ACCEL is not set.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260302181432.1836150-8-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/netdev_rx_queue.h | 3 | ||||
| -rw-r--r-- | include/net/rps.h | 10 |
2 files changed, 2 insertions, 11 deletions
diff --git a/include/net/netdev_rx_queue.h b/include/net/netdev_rx_queue.h index cfa72c485387..08f81329fc11 100644 --- a/include/net/netdev_rx_queue.h +++ b/include/net/netdev_rx_queue.h @@ -8,13 +8,14 @@ #include <net/xdp.h> #include <net/page_pool/types.h> #include <net/netdev_queues.h> +#include <net/rps-types.h> /* This structure contains an instance of an RX queue. */ struct netdev_rx_queue { struct xdp_rxq_info xdp_rxq; #ifdef CONFIG_RPS struct rps_map __rcu *rps_map; - struct rps_dev_flow_table __rcu *rps_flow_table; + rps_tag_ptr rps_flow_table; #endif struct kobject kobj; const struct attribute_group **groups; diff --git a/include/net/rps.h b/include/net/rps.h index e900480e828b..e33c6a2fa8bb 100644 --- a/include/net/rps.h +++ b/include/net/rps.h @@ -40,16 +40,6 @@ struct rps_dev_flow { #define RPS_NO_FILTER 0xffff /* - * The rps_dev_flow_table structure contains a table of flow mappings. - */ -struct rps_dev_flow_table { - u8 log; - struct rps_dev_flow flows[]; -}; -#define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \ - ((_num) * sizeof(struct rps_dev_flow))) - -/* * The rps_sock_flow_table contains mappings of flows to the last CPU * on which they were processed by the application (set in recvmsg). * Each entry is a 32bit value. Upper part is the high-order bits |