From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Eric W. Biederman" Subject: [PATCH 15/21] net sched: Pass the skb into change so it can access NETLINK_CB Date: Mon, 13 Aug 2012 13:18:29 -0700 Message-ID: <1344889115-21610-15-git-send-email-ebiederm@xmission.com> References: <87ehnav9n5.fsf@xmission.com> <1344889115-21610-1-git-send-email-ebiederm@xmission.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Jamal Hadi Salim , "Eric W. Biederman" , David Miller To: Return-path: In-Reply-To: <1344889115-21610-1-git-send-email-ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: netdev.vger.kernel.org From: "Eric W. Biederman" cls_flow.c plays with uids and gids. Unless I misread that code it is possible for classifiers to depend on the specific uid and gid values. Therefore I need to know the user namespace of the netlink socket that is installing the packet classifiers. Pass in the rtnetlink skb so I can access the NETLINK_CB of the passed packet. In particular I want access to sk_user_ns(NETLINK_CB(in_skb).ssk). Pass in not the user namespace but the incomming rtnetlink skb into the the classifier change routines as that is generally the more useful parameter. Cc: Jamal Hadi Salim Acked-by: Serge Hallyn Signed-off-by: Eric W. Biederman --- include/net/sch_generic.h | 3 ++- net/sched/cls_api.c | 2 +- net/sched/cls_basic.c | 3 ++- net/sched/cls_cgroup.c | 3 ++- net/sched/cls_flow.c | 3 ++- net/sched/cls_fw.c | 3 ++- net/sched/cls_route.c | 3 ++- net/sched/cls_rsvp.h | 3 ++- net/sched/cls_tcindex.c | 3 ++- net/sched/cls_u32.c | 3 ++- 10 files changed, 19 insertions(+), 10 deletions(-) diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index d9611e0..4616f46 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -188,7 +188,8 @@ struct tcf_proto_ops { unsigned long (*get)(struct tcf_proto*, u32 handle); void (*put)(struct tcf_proto*, unsigned long); - int (*change)(struct tcf_proto*, unsigned long, + int (*change)(struct sk_buff *, + struct tcf_proto*, unsigned long, u32 handle, struct nlattr **, unsigned long *); int (*delete)(struct tcf_proto*, unsigned long); diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 6dd1131..dc3ef5a 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -319,7 +319,7 @@ replay: } } - err = tp->ops->change(tp, cl, t->tcm_handle, tca, &fh); + err = tp->ops->change(skb, tp, cl, t->tcm_handle, tca, &fh); if (err == 0) { if (tp_created) { spin_lock_bh(root_lock); diff --git a/net/sched/cls_basic.c b/net/sched/cls_basic.c index 590960a..344a11b 100644 --- a/net/sched/cls_basic.c +++ b/net/sched/cls_basic.c @@ -162,7 +162,8 @@ errout: return err; } -static int basic_change(struct tcf_proto *tp, unsigned long base, u32 handle, +static int basic_change(struct sk_buff *in_skb, + struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, unsigned long *arg) { int err; diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c index 7743ea8..91de666 100644 --- a/net/sched/cls_cgroup.c +++ b/net/sched/cls_cgroup.c @@ -151,7 +151,8 @@ static const struct nla_policy cgroup_policy[TCA_CGROUP_MAX + 1] = { [TCA_CGROUP_EMATCHES] = { .type = NLA_NESTED }, }; -static int cls_cgroup_change(struct tcf_proto *tp, unsigned long base, +static int cls_cgroup_change(struct sk_buff *in_skb, + struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, unsigned long *arg) { diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c index ccd08c8..ae854f3 100644 --- a/net/sched/cls_flow.c +++ b/net/sched/cls_flow.c @@ -347,7 +347,8 @@ static const struct nla_policy flow_policy[TCA_FLOW_MAX + 1] = { [TCA_FLOW_PERTURB] = { .type = NLA_U32 }, }; -static int flow_change(struct tcf_proto *tp, unsigned long base, +static int flow_change(struct sk_buff *in_skb, + struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, unsigned long *arg) { diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c index 8384a47..4075a0a 100644 --- a/net/sched/cls_fw.c +++ b/net/sched/cls_fw.c @@ -233,7 +233,8 @@ errout: return err; } -static int fw_change(struct tcf_proto *tp, unsigned long base, +static int fw_change(struct sk_buff *in_skb, + struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, unsigned long *arg) diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c index 44f405c..c10d57b 100644 --- a/net/sched/cls_route.c +++ b/net/sched/cls_route.c @@ -427,7 +427,8 @@ errout: return err; } -static int route4_change(struct tcf_proto *tp, unsigned long base, +static int route4_change(struct sk_buff *in_skb, + struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, unsigned long *arg) diff --git a/net/sched/cls_rsvp.h b/net/sched/cls_rsvp.h index 18ab93e..494bbb9 100644 --- a/net/sched/cls_rsvp.h +++ b/net/sched/cls_rsvp.h @@ -416,7 +416,8 @@ static const struct nla_policy rsvp_policy[TCA_RSVP_MAX + 1] = { [TCA_RSVP_PINFO] = { .len = sizeof(struct tc_rsvp_pinfo) }, }; -static int rsvp_change(struct tcf_proto *tp, unsigned long base, +static int rsvp_change(struct sk_buff *in_skb, + struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, unsigned long *arg) diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c index fe29420..a1293b4 100644 --- a/net/sched/cls_tcindex.c +++ b/net/sched/cls_tcindex.c @@ -332,7 +332,8 @@ errout: } static int -tcindex_change(struct tcf_proto *tp, unsigned long base, u32 handle, +tcindex_change(struct sk_buff *in_skb, + struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, unsigned long *arg) { struct nlattr *opt = tca[TCA_OPTIONS]; diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c index d45373f..c7c27bc 100644 --- a/net/sched/cls_u32.c +++ b/net/sched/cls_u32.c @@ -544,7 +544,8 @@ errout: return err; } -static int u32_change(struct tcf_proto *tp, unsigned long base, u32 handle, +static int u32_change(struct sk_buff *in_skb, + struct tcf_proto *tp, unsigned long base, u32 handle, struct nlattr **tca, unsigned long *arg) { -- 1.7.5.4