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[netlink] Increse netlink buffer size from 3MB to 16MB (#13965)

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#### Why I did it
Following the PR https://github.com/sonic-net/sonic-swss-common/pull/739 increasing netlink buffer size in linux kernel
As error is seen in fdbsyncd with netlink reports "out of memory on reading a netlink socket" It is seen when kernel is sending 10k remote mac to fdbsyncd.


#### How I did it
Increase the buffer size of the netlink buffer from 3MB to 16MB


#### How to verify it
Verified with 10k remote mac, and restarting the fdbsyncd process. So that kernel send the bridge fdb dump to the fdbsyncd.
Verified that the netlink buffer error is not reported in the sys log.
This commit is contained in:
Sudharsan Dhamal Gopalarathnam 2023-02-27 15:41:22 -08:00 committed by mssonicbld
parent e57197bc8c
commit e1536c00a7
1 changed files with 2 additions and 2 deletions
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files/image_config/sysctl/sysctl-net.conf
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@ -34,7 +34,7 @@ net.ipv6.conf.all.keep_addr_on_down=1
net.ipv6.conf.eth0.keep_addr_on_down=1
net.ipv4.tcp_l3mdev_accept=1
net.ipv4.udp_l3mdev_accept=1
net.core.rmem_max=3145728
net.core.wmem_max=3145728
net.core.rmem_max=16777216
net.core.wmem_max=16777216
net.core.somaxconn=512
net.ipv4.fib_multipath_use_neigh=1