diff options
| author | Patrick McHardy <kaber@trash.net> | 2009-09-04 08:41:15 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-06 11:06:12 +0200 |
| commit | 71ebe5e91947392bc276af713827eab12b6db8e4 (patch) | |
| tree | 198ff02e23f8606ff2a3bec51c7044ec408e19c4 | |
| parent | net_sched: fix class grafting errno codes (diff) | |
| download | linux-71ebe5e91947392bc276af713827eab12b6db8e4.tar.xz linux-71ebe5e91947392bc276af713827eab12b6db8e4.zip | |
net_sched: make cls_ops->tcf_chain() optional
Some qdiscs don't support attaching filters. Handle this centrally in
cls_api and return a proper errno code (EOPNOTSUPP) instead of EINVAL.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/sched/cls_api.c | 5 | ||||
| -rw-r--r-- | net/sched/sch_red.c | 6 | ||||
| -rw-r--r-- | net/sched/sch_tbf.c | 6 |
3 files changed, 5 insertions, 12 deletions
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 09cdcdfe7e91..bcfbdb4758c9 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -181,6 +181,9 @@ replay: if ((cops = q->ops->cl_ops) == NULL) return -EINVAL; + if (cops->tcf_chain == NULL) + return -EOPNOTSUPP; + /* Do we search for filter, attached to class? */ if (TC_H_MIN(parent)) { cl = cops->get(q, parent); @@ -433,6 +436,8 @@ static int tc_dump_tfilter(struct sk_buff *skb, struct netlink_callback *cb) goto out; if ((cops = q->ops->cl_ops) == NULL) goto errout; + if (cops->tcf_chain == NULL) + goto errout; if (TC_H_MIN(tcm->tcm_parent)) { cl = cops->get(q, tcm->tcm_parent); if (cl == 0) diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c index 2bdf241f6315..c27b8023f079 100644 --- a/net/sched/sch_red.c +++ b/net/sched/sch_red.c @@ -331,11 +331,6 @@ static void red_walk(struct Qdisc *sch, struct qdisc_walker *walker) } } -static struct tcf_proto **red_find_tcf(struct Qdisc *sch, unsigned long cl) -{ - return NULL; -} - static const struct Qdisc_class_ops red_class_ops = { .graft = red_graft, .leaf = red_leaf, @@ -344,7 +339,6 @@ static const struct Qdisc_class_ops red_class_ops = { .change = red_change_class, .delete = red_delete, .walk = red_walk, - .tcf_chain = red_find_tcf, .dump = red_dump_class, }; diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index e22dfe85e43e..28909699d24d 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -433,11 +433,6 @@ static void tbf_walk(struct Qdisc *sch, struct qdisc_walker *walker) } } -static struct tcf_proto **tbf_find_tcf(struct Qdisc *sch, unsigned long cl) -{ - return NULL; -} - static const struct Qdisc_class_ops tbf_class_ops = { .graft = tbf_graft, @@ -447,7 +442,6 @@ static const struct Qdisc_class_ops tbf_class_ops = .change = tbf_change_class, .delete = tbf_delete, .walk = tbf_walk, - .tcf_chain = tbf_find_tcf, .dump = tbf_dump_class, }; |