diff options
| author | Ondrej Zajicek <santiago@crfreenet.org> | 2022-07-24 02:15:20 +0200 |
|---|---|---|
| committer | Ondrej Zajicek <santiago@crfreenet.org> | 2022-07-24 02:15:20 +0200 |
| commit | 534d0a4b44aa193da785ae180475a448f57805e2 (patch) | |
| tree | bd4aba91e8bc918380ea490ecab93d3c7e775977 /sysdep/cf | |
| parent | 971721c9b50d361e886762f1c7d0392e10f74021 (diff) | |
KRT: Scan routing tables separetely on linux to avoid congestion
Remove compile-time sysdep option CONFIG_ALL_TABLES_AT_ONCE, replace it
with runtime ability to run either separate table scans or shared scan.
On Linux, use separate table scans by default when the netlink socket
option NETLINK_GET_STRICT_CHK is available, but retreat to shared scan
when it fails.
Running separate table scans has advantages where some routing tables are
managed independently, e.g. when multiple routing daemons are running on
the same machine, as kernel routing table modification performance is
significantly reduced when the table is modified while it is being
scanned.
Thanks Daniel Gröber for the original patch and Toke Høiland-Jørgensen
for suggestions.
Diffstat (limited to 'sysdep/cf')
| -rw-r--r-- | sysdep/cf/README | 1 | ||||
| -rw-r--r-- | sysdep/cf/linux.h | 1 |
2 files changed, 0 insertions, 2 deletions
diff --git a/sysdep/cf/README b/sysdep/cf/README index 9a7a4afa..68078bbe 100644 --- a/sysdep/cf/README +++ b/sysdep/cf/README @@ -4,7 +4,6 @@ Available configuration variables: CONFIG_AUTO_ROUTES Device routes are added automagically by the kernel CONFIG_SELF_CONSCIOUS We're able to recognize whether route was installed by us CONFIG_MULTIPLE_TABLES The kernel supports multiple routing tables -CONFIG_ALL_TABLES_AT_ONCE Kernel scanner wants to process all tables at once CONFIG_SINGLE_ROUTE There is only one route per network CONFIG_MC_PROPER_SRC Multicast packets have source address according to socket saddr field diff --git a/sysdep/cf/linux.h b/sysdep/cf/linux.h index 047d3764..c640bef4 100644 --- a/sysdep/cf/linux.h +++ b/sysdep/cf/linux.h @@ -9,7 +9,6 @@ #define CONFIG_AUTO_ROUTES #define CONFIG_SELF_CONSCIOUS #define CONFIG_MULTIPLE_TABLES -#define CONFIG_ALL_TABLES_AT_ONCE #define CONFIG_IP6_SADR_KERNEL #define CONFIG_MC_PROPER_SRC |