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authorDavid S. Miller <davem@davemloft.net>2014-09-23 12:09:27 -0400
committerDavid S. Miller <davem@davemloft.net>2014-09-23 12:09:27 -0400
commit1f6d80358dc9bbbeb56cb43384fa11fd645d9289 (patch)
tree152bfa5165292a8e4f06d536b6d222a68480e573 /net/sched/sch_choke.c
parenta2aeb02a8e6a9fef397c344245a54eeae67341f6 (diff)
parent98f75b8291a89ba6bf73e322ee467ce0bfeb91c1 (diff)
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts: arch/mips/net/bpf_jit.c drivers/net/can/flexcan.c Both the flexcan and MIPS bpf_jit conflicts were cases of simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_choke.c')
-rw-r--r--net/sched/sch_choke.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c
index 74813e6b6ff6..8abc2625c3a1 100644
--- a/net/sched/sch_choke.c
+++ b/net/sched/sch_choke.c
@@ -133,10 +133,16 @@ static void choke_drop_by_idx(struct Qdisc *sch, unsigned int idx)
--sch->q.qlen;
}
+/* private part of skb->cb[] that a qdisc is allowed to use
+ * is limited to QDISC_CB_PRIV_LEN bytes.
+ * As a flow key might be too large, we store a part of it only.
+ */
+#define CHOKE_K_LEN min_t(u32, sizeof(struct flow_keys), QDISC_CB_PRIV_LEN - 3)
+
struct choke_skb_cb {
u16 classid;
u8 keys_valid;
- struct flow_keys keys;
+ u8 keys[QDISC_CB_PRIV_LEN - 3];
};
static inline struct choke_skb_cb *choke_skb_cb(const struct sk_buff *skb)
@@ -163,22 +169,26 @@ static u16 choke_get_classid(const struct sk_buff *skb)
static bool choke_match_flow(struct sk_buff *skb1,
struct sk_buff *skb2)
{
+ struct flow_keys temp;
+
if (skb1->protocol != skb2->protocol)
return false;
if (!choke_skb_cb(skb1)->keys_valid) {
choke_skb_cb(skb1)->keys_valid = 1;
- skb_flow_dissect(skb1, &choke_skb_cb(skb1)->keys);
+ skb_flow_dissect(skb1, &temp);
+ memcpy(&choke_skb_cb(skb1)->keys, &temp, CHOKE_K_LEN);
}
if (!choke_skb_cb(skb2)->keys_valid) {
choke_skb_cb(skb2)->keys_valid = 1;
- skb_flow_dissect(skb2, &choke_skb_cb(skb2)->keys);
+ skb_flow_dissect(skb2, &temp);
+ memcpy(&choke_skb_cb(skb2)->keys, &temp, CHOKE_K_LEN);
}
return !memcmp(&choke_skb_cb(skb1)->keys,
&choke_skb_cb(skb2)->keys,
- sizeof(struct flow_keys));
+ CHOKE_K_LEN);
}
/*