Thread (17 messages) 17 messages, 5 authors, 2009-11-10

Re: iproute uses too small of a receive buffer

From: Patrick McHardy <hidden>
Date: 2009-10-28 19:05:14

Eric Dumazet wrote:
Stephen Hemminger a écrit :
quoted
Just having larger buffer isn't guarantee of success. Allocating
a huge buffer is not going to work on embedded.
Please note we do not allocate a big buffer, only allow more small skbs
to be queued on socket receive queue.

If memory is not available, skb allocation will eventually fail
and be reported as well, embedded or not.

I vote for allowing 1024*1024 bytes instead of 32768,
and eventually user should be warned that it is capped by 
/proc/sys/net/core/rmem_max
How about this? It will double the receive queue limit on ENOBUFS
up to 1024 * 1024b, then bail out with the normal error message on
further ENOBUFS.

Signed-off-by: Patrick McHardy <redacted>

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