> > Is it possible to increase netlink buffering capacity in order to avoid
> > a netlink overrun error ?
> > I'm using netlink to transmit messages from kernel space to an
> > application, which, from time to time, is not fast enough under heavy
> > load ...
> >
>
> Yes, you can set the size of the socket receive buffer with SO_RCVBUF
> socket option.
Unfortunately, setsockopt is not supported on netlink sockets in kernel
2.4.5 ...
Thus, I would like to increase sk->rcvbuf, either at netlink level, or
globally by changing SK_RMEM_MAX. Is it a problem to have netlink's
sk->rcvbuf greater than SK_RMEM_MAX ?
include/linux/skbuff.h:#define SK_RMEM_MAX 65535
net/core/sock.c: sk->rcvbuf = sysctl_rmem_default;
__u32 sysctl_rmem_default = SK_RMEM_MAX;
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