diff options
author | Patrick McHardy <kaber@coreworks.de> | 2005-01-12 16:51:01 +0100 |
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committer | Patrick McHardy <kaber@coreworks.de> | 2005-01-12 16:51:01 +0100 |
commit | 437293de63d8979bd9288a29352899e72fff581a (patch) | |
tree | f9466925bf0df16bdc3325ce006f4e7755c705df /net | |
parent | b406b3fbdda2c643f8a776f3e44576e40a7cd8bd (diff) | |
download | history-437293de63d8979bd9288a29352899e72fff581a.tar.gz |
[PKT_SCHED]: cls_api.c: drop rtnl for loading modules
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net')
-rw-r--r-- | net/sched/cls_api.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 1485789e70e7b2..47cdb71d6b3a00 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -142,7 +142,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n, void *arg) struct tcf_proto *tp; struct tcf_proto_ops *tp_ops; struct Qdisc_class_ops *cops; - unsigned long cl = 0; + unsigned long cl; unsigned long fh; int err; @@ -153,6 +153,7 @@ replay: prio = TC_H_MAJ(t->tcm_info); nprio = prio; parent = t->tcm_parent; + cl = 0; if (prio == 0) { /* If no priority is given, user wants we allocated it. */ @@ -219,20 +220,29 @@ replay: err = -ENOBUFS; if ((tp = kmalloc(sizeof(*tp), GFP_KERNEL)) == NULL) goto errout; + err = -EINVAL; tp_ops = tcf_proto_lookup_ops(tca[TCA_KIND-1]); + if (tp_ops == NULL) { #ifdef CONFIG_KMOD - if (tp_ops==NULL && tca[TCA_KIND-1] != NULL) { struct rtattr *kind = tca[TCA_KIND-1]; char name[IFNAMSIZ]; - if (rtattr_strlcpy(name, kind, IFNAMSIZ) < IFNAMSIZ) { + if (kind != NULL && + rtattr_strlcpy(name, kind, IFNAMSIZ) < IFNAMSIZ) { + rtnl_unlock(); request_module("cls_%s", name); + rtnl_lock(); tp_ops = tcf_proto_lookup_ops(kind); + /* We dropped the RTNL semaphore in order to + * perform the module load. So, even if we + * succeeded in loading the module we have to + * replay the request. We indicate this using + * -EAGAIN. + */ + if (tp_ops != NULL) + err = -EAGAIN; } - } #endif - if (tp_ops == NULL) { - err = -EINVAL; kfree(tp); goto errout; } |