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Date: Sat, 6 Jan 2018 18:11:33 +0100 From: Jiri Pirko <jiri@...nulli.us> To: netdev@...r.kernel.org Cc: davem@...emloft.net, jhs@...atatu.com, xiyou.wangcong@...il.com, mlxsw@...lanox.com, andrew@...n.ch, vivien.didelot@...oirfairelinux.com, f.fainelli@...il.com, michael.chan@...adcom.com, ganeshgr@...lsio.com, saeedm@...lanox.com, matanb@...lanox.com, leonro@...lanox.com, idosch@...lanox.com, jakub.kicinski@...ronome.com, simon.horman@...ronome.com, pieter.jansenvanvuuren@...ronome.com, john.hurley@...ronome.com, alexander.h.duyck@...el.com, ogerlitz@...lanox.com, john.fastabend@...il.com, daniel@...earbox.net, dsahern@...il.com Subject: Re: [patch net-next v6 01/11] net: sched: introduce support for multiple filter chain pointers registration Sat, Jan 06, 2018 at 12:09:19AM CET, jiri@...nulli.us wrote: >From: Jiri Pirko <jiri@...lanox.com> > >So far, there was possible only to register a single filter chain >pointer to block->chain[0]. However, when the blocks will get shareable, >we need to allow multiple filter chain pointers registration. > >Signed-off-by: Jiri Pirko <jiri@...lanox.com> >--- [...] >+static int tcf_block_insert(struct tcf_block *block, struct net *net, >+ u32 block_index, struct netlink_ext_ack *extack) >+{ >+ struct tcf_net *tn = net_generic(net, tcf_net_id); >+ int idr_start; >+ int idr_end; >+ int index; >+ >+ if (block_index >= INT_MAX) { >+ NL_SET_ERR_MSG(extack, "Invalid block index value (>= INT_MAX)"); >+ return -EINVAL; >+ } >+ idr_start = block_index ? block_index : 1; >+ idr_end = block_index ? block_index + 1 : INT_MAX; >+ >+ index = idr_alloc(&tn->idr, block, idr_start, idr_end, GFP_KERNEL); Oh, I have to do idr_alloc_ext
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