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| author | Roman Kapl <roman.kapl@sysgo.com> | 2017-05-24 11:22:22 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-13 20:48:06 +0300 |
| commit | 419490af01a63e6d57d8009a813b5030457b29d0 (patch) | |
| tree | 24d2231970b488fe790d4ab36c9aced5f8668287 /net/llc/llc_if.c | |
| parent | 71c0b3344e72959b3718c637f978185918be4688 (diff) | |
| download | linux-419490af01a63e6d57d8009a813b5030457b29d0.tar.xz | |
net: move somaxconn init from sysctl code
[ Upstream commit 7c3f1875c66fbc19762760097cabc91849ea0bbb ]
The default value for somaxconn is set in sysctl_core_net_init(), but this
function is not called when kernel is configured without CONFIG_SYSCTL.
This results in the kernel not being able to accept TCP connections,
because the backlog has zero size. Usually, the user ends up with:
"TCP: request_sock_TCP: Possible SYN flooding on port 7. Dropping request. Check SNMP counters."
If SYN cookies are not enabled the connection is rejected.
Before ef547f2ac16 (tcp: remove max_qlen_log), the effects were less
severe, because the backlog was always at least eight slots long.
Signed-off-by: Roman Kapl <roman.kapl@sysgo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/llc/llc_if.c')
0 files changed, 0 insertions, 0 deletions