diff options
| author | Maciej Żenczykowski <maze@google.com> | 2016-09-28 09:57:58 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-30 08:54:28 +0300 |
| commit | bd11f0741fa5a2c296629898ad07759dd12b35bb (patch) | |
| tree | e25b67382a3798f6274bc4e85c06a1133deb56a2 /include | |
| parent | bcdc6efabda3ba6a67f4cb8915873e7d6759b7e6 (diff) | |
| download | linux-bd11f0741fa5a2c296629898ad07759dd12b35bb.tar.xz | |
ipv6 addrconf: implement RFC7559 router solicitation backoff
This implements:
https://tools.ietf.org/html/rfc7559
Backoff is performed according to RFC3315 section 14:
https://tools.ietf.org/html/rfc3315#section-14
We allow setting /proc/sys/net/ipv6/conf/*/router_solicitations
to a negative value meaning an unlimited number of retransmits,
and we make this the new default (inline with the RFC).
We also add a new setting:
/proc/sys/net/ipv6/conf/*/router_solicitation_max_interval
defaulting to 1 hour (per RFC recommendation).
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Acked-by: Erik Kline <ek@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ipv6.h | 1 | ||||
| -rw-r--r-- | include/net/addrconf.h | 3 | ||||
| -rw-r--r-- | include/net/if_inet6.h | 1 | ||||
| -rw-r--r-- | include/uapi/linux/ipv6.h | 1 |
4 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index c6dbcd84a2c7..7e9a789be5e0 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -18,6 +18,7 @@ struct ipv6_devconf { __s32 dad_transmits; __s32 rtr_solicits; __s32 rtr_solicit_interval; + __s32 rtr_solicit_max_interval; __s32 rtr_solicit_delay; __s32 force_mld_version; __s32 mldv1_unsolicited_report_interval; diff --git a/include/net/addrconf.h b/include/net/addrconf.h index 9826d3a9464c..f2d072787947 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -1,8 +1,9 @@ #ifndef _ADDRCONF_H #define _ADDRCONF_H -#define MAX_RTR_SOLICITATIONS 3 +#define MAX_RTR_SOLICITATIONS -1 /* unlimited */ #define RTR_SOLICITATION_INTERVAL (4*HZ) +#define RTR_SOLICITATION_MAX_INTERVAL (3600*HZ) /* 1 hour */ #define MIN_VALID_LIFETIME (2*3600) /* 2 hours */ diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h index 1c8b6820b694..515352c6280a 100644 --- a/include/net/if_inet6.h +++ b/include/net/if_inet6.h @@ -201,6 +201,7 @@ struct inet6_dev { struct ipv6_devstat stats; struct timer_list rs_timer; + __s32 rs_interval; /* in jiffies */ __u8 rs_probes; __u8 addr_gen_mode; diff --git a/include/uapi/linux/ipv6.h b/include/uapi/linux/ipv6.h index 395876060f50..8c2772340c3f 100644 --- a/include/uapi/linux/ipv6.h +++ b/include/uapi/linux/ipv6.h @@ -177,6 +177,7 @@ enum { DEVCONF_DROP_UNICAST_IN_L2_MULTICAST, DEVCONF_DROP_UNSOLICITED_NA, DEVCONF_KEEP_ADDR_ON_DOWN, + DEVCONF_RTR_SOLICIT_MAX_INTERVAL, DEVCONF_MAX }; |