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| author | Ying Xue <ying.xue@windriver.com> | 2013-06-17 18:54:37 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-06-18 02:53:00 +0400 |
| commit | cc79dd1ba9c1021c2ac6ae200a65ec38ee8db351 (patch) | |
| tree | 86ffd4e43a1fb2d833a750ea713ce81b0af5df63 /net/tipc/Makefile | |
| parent | 8941bbcd572a8860ad03c76e2f3d1dafa820b842 (diff) | |
| download | linux-cc79dd1ba9c1021c2ac6ae200a65ec38ee8db351.tar.xz | |
tipc: change socket buffer overflow control to respect sk_rcvbuf
As per feedback from the netdev community, we change the buffer
overflow protection algorithm in receiving sockets so that it
always respects the nominal upper limit set in sk_rcvbuf.
Instead of scaling up from a small sk_rcvbuf value, which leads to
violation of the configured sk_rcvbuf limit, we now calculate the
weighted per-message limit by scaling down from a much bigger value,
still in the same field, according to the importance priority of the
received message.
To allow for administrative tunability of the socket receive buffer
size, we create a tipc_rmem sysctl variable to allow the user to
configure an even bigger value via sysctl command. It is a size of
three (min/default/max) to be consistent with things like tcp_rmem.
By default, the value initialized in tipc_rmem[1] is equal to the
receive socket size needed by a TIPC_CRITICAL_IMPORTANCE message.
This value is also set as the default value of sk_rcvbuf.
Originally-by: Jon Maloy <jon.maloy@ericsson.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Jon Maloy <jon.maloy@ericsson.com>
[Ying: added sysctl variation to Jon's original patch]
Signed-off-by: Ying Xue <ying.xue@windriver.com>
[PG: don't compile sysctl.c if not config'd; add Documentation]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/Makefile')
| -rw-r--r-- | net/tipc/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/tipc/Makefile b/net/tipc/Makefile index 4df8e02d9008..02636d0a90cf 100644 --- a/net/tipc/Makefile +++ b/net/tipc/Makefile @@ -11,3 +11,4 @@ tipc-y += addr.o bcast.o bearer.o config.o \ socket.o log.o eth_media.o tipc-$(CONFIG_TIPC_MEDIA_IB) += ib_media.o +tipc-$(CONFIG_SYSCTL) += sysctl.o |