summaryrefslogtreecommitdiff
path: root/include/net/netns
diff options
context:
space:
mode:
authorMubashir Adnan Qureshi <mubashirq@google.com>2022-10-26 16:51:11 +0300
committerDavid S. Miller <davem@davemloft.net>2022-10-28 12:47:42 +0300
commitbd456f283b66704920fae8e655ebc769cb743420 (patch)
treeded9029b5d1ae5f6baae1725988ac644567b4df6 /include/net/netns
parent7f86cf50cfa62d8028ba1fa9383c9645b3665e64 (diff)
downloadlinux-bd456f283b66704920fae8e655ebc769cb743420.tar.xz
tcp: add sysctls for TCP PLB parameters
PLB (Protective Load Balancing) is a host based mechanism for load balancing across switch links. It leverages congestion signals(e.g. ECN) from transport layer to randomly change the path of the connection experiencing congestion. PLB changes the path of the connection by changing the outgoing IPv6 flow label for IPv6 connections (implemented in Linux by calling sk_rethink_txhash()). Because of this implementation mechanism, PLB can currently only work for IPv6 traffic. For more information, see the SIGCOMM 2022 paper: https://doi.org/10.1145/3544216.3544226 This commit adds new sysctl knobs and sets their default values for TCP PLB. Signed-off-by: Mubashir Adnan Qureshi <mubashirq@google.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/netns')
-rw-r--r--include/net/netns/ipv4.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index 1b8004679445..25f90bba4889 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -183,6 +183,11 @@ struct netns_ipv4 {
unsigned long tfo_active_disable_stamp;
u32 tcp_challenge_timestamp;
u32 tcp_challenge_count;
+ u8 sysctl_tcp_plb_enabled;
+ u8 sysctl_tcp_plb_idle_rehash_rounds;
+ u8 sysctl_tcp_plb_rehash_rounds;
+ u8 sysctl_tcp_plb_suspend_rto_sec;
+ int sysctl_tcp_plb_cong_thresh;
int sysctl_udp_wmem_min;
int sysctl_udp_rmem_min;