From: Xin Long <lucien.xin@xxxxxxxxx> Date: Mon, 15 Apr 2019 17:15:05 +0800 > sctp memory accounting is added in this patchset by using > these kernel APIs on send side: > > - sk_mem_charge() > - sk_mem_uncharge() > - sk_wmem_schedule() > - sk_under_memory_pressure() > - sk_mem_reclaim() > > and these on receive side: > > - sk_mem_charge() > - sk_mem_uncharge() > - sk_rmem_schedule() > - sk_under_memory_pressure() > - sk_mem_reclaim() > > With sctp memory accounting, we can limit the memory allocation by > either sysctl: > > # sysctl -w net.sctp.sctp_mem="10 20 50" > > or cgroup: > > # echo $((8<<14)) > \ > /sys/fs/cgroup/memory/sctp_mem/memory.kmem.tcp.limit_in_bytes > > When the socket is under memory pressure, the send side will block > and wait, while the receive side will renege or drop. > > v1->v2: > - add the missing Reported/Tested/Acked/-bys. Series applied, thanks Xin.
