diff options
| author | Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com> | 2026-01-31 23:25:14 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2026-02-03 15:13:25 +0100 |
| commit | 8ae3e8e6ceedfb3cf74ca18169c942e073586a39 (patch) | |
| tree | 17f4029588240236bf56ed3f984b16dcbe24b185 /net | |
| parent | 4fa4ac5e584841c0f9b01c2f7dd0c2e3caa8bca0 (diff) | |
tcp: accecn: enable AccECN
Enable Accurate ECN negotiation and request for incoming and
outgoing connection by setting sysctl_tcp_ecn:
+==============+===========================================+
| | Highest ECN variant (Accurate ECN, ECN, |
| tcp_ecn | or no ECN) to be negotiated & requested |
| +---------------------+---------------------+
| | Incoming connection | Outgoing connection |
+==============+=====================+=====================+
| 0 | No ECN | No ECN |
| 1 | ECN | ECN |
| 2 | ECN | No ECN |
+--------------+---------------------+---------------------+
| 3 | Accurate ECN | Accurate ECN |
| 4 | Accurate ECN | ECN |
| 5 | Accurate ECN | No ECN |
+==============+=====================+=====================+
Refer Documentation/networking/ip-sysctl.rst for more details.
Signed-off-by: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260131222515.8485-15-chia-yu.chang@nokia-bell-labs.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 385b5b986d23..643763bc2142 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -47,7 +47,7 @@ static unsigned int udp_child_hash_entries_max = UDP_HTABLE_SIZE_MAX; static int tcp_plb_max_rounds = 31; static int tcp_plb_max_cong_thresh = 256; static unsigned int tcp_tw_reuse_delay_max = TCP_PAWS_MSL * MSEC_PER_SEC; -static int tcp_ecn_mode_max = 2; +static int tcp_ecn_mode_max = 5; static u32 icmp_errors_extension_mask_all = GENMASK_U8(ICMP_ERR_EXT_COUNT - 1, 0); |