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ipv6: add ipv6_devconf_read_txrx cacheline_group

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IPv6 TX and RX fast path use the following fields:

- disable_ipv6
- hop_limit
- mtu6
- forwarding
- disable_policy
- proxy_ndp

Place them in a group to increase data locality.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2024-02-28 13:54:25 +00:00 committed by David S. Miller
parent 65f5dd4f02
commit 096361b155
1 changed files with 9 additions and 4 deletions
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13
include/linux/ipv6.h
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@ -3,6 +3,7 @@
#define _IPV6_H
#include <uapi/linux/ipv6.h>
#include <linux/cache.h>
#define ipv6_optlen(p) (((p)->hdrlen+1) << 3)
#define ipv6_authlen(p) (((p)->hdrlen+2) << 2)
@ -10,9 +11,16 @@
* This structure contains configuration options per IPv6 link.
*/
struct ipv6_devconf {
__s32 forwarding;
/* RX & TX fastpath fields. */
__cacheline_group_begin(ipv6_devconf_read_txrx);
__s32 disable_ipv6;
__s32 hop_limit;
__s32 mtu6;
__s32 forwarding;
__s32 disable_policy;
__s32 proxy_ndp;
__cacheline_group_end(ipv6_devconf_read_txrx);
__s32 accept_ra;
__s32 accept_redirects;
__s32 autoconf;
@ -45,7 +53,6 @@ struct ipv6_devconf {
__s32 accept_ra_rt_info_max_plen;
#endif
#endif
__s32 proxy_ndp;
__s32 accept_source_route;
__s32 accept_ra_from_local;
#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
@ -55,7 +62,6 @@ struct ipv6_devconf {
#ifdef CONFIG_IPV6_MROUTE
atomic_t mc_forwarding;
#endif
__s32 disable_ipv6;
__s32 drop_unicast_in_l2_multicast;
__s32 accept_dad;
__s32 force_tllao;
@ -76,7 +82,6 @@ struct ipv6_devconf {
#endif
__u32 enhanced_dad;
__u32 addr_gen_mode;
__s32 disable_policy;
__s32 ndisc_tclass;
__s32 rpl_seg_enabled;
__u32 ioam6_id;