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[PATCH] knfsd: Prepare knfsd for support of rsize/wsize of up to 1MB, over TCP

Browse source 
The limit over UDP remains at 32K.  Also, make some of the apparently
arbitrary sizing constants clearer.

The biggest change here involves replacing NFSSVC_MAXBLKSIZE by a function of
the rqstp.  This allows it to be different for different protocols (udp/tcp)
and also allows it to depend on the servers declared sv_bufsiz.

Note that we don't actually increase sv_bufsz for nfs yet.  That comes next.

Signed-off-by: Greg Banks <[email protected]>
Signed-off-by: Neil Brown <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Greg Banks 2006-10-04 02:15:47 -07:00 • committed by Linus Torvalds
commit 7adae489fe
11 changed files with 119 additions and 34 deletions
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15
net/sunrpc/svc.c
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@ -919,3 +919,18 @@ err_bad:
svc_putnl(resv, ntohl(rpc_stat));
goto sendit;
}
/*
* Return (transport-specific) limit on the rpc payload.
*/
u32 svc_max_payload(const struct svc_rqst *rqstp)
{
int max = RPCSVC_MAXPAYLOAD_TCP;
if (rqstp->rq_sock->sk_sock->type == SOCK_DGRAM)
max = RPCSVC_MAXPAYLOAD_UDP;
if (rqstp->rq_server->sv_bufsz < max)
max = rqstp->rq_server->sv_bufsz;
return max;
}
EXPORT_SYMBOL_GPL(svc_max_payload);