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Commit 2e99403d authored by Tom Herbert's avatar Tom Herbert Committed by David S. Miller
Browse files

sch_choke: Use flow_keys_digest 



Call make_flow_keys_digest to get a digest from flow keys and
use that to pass skbuff cb and for comparing flows.

Signed-off-by: default avatarTom Herbert <tom@herbertland.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2f59e1eb

net/sched/sch_choke.c

+4 −10
Original line number Diff line number Diff line
@@ -133,16 +133,10 @@ 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;

	u8			keys[QDISC_CB_PRIV_LEN - 3];

	struct			flow_keys_digest keys;

};



static inline struct choke_skb_cb *choke_skb_cb(const struct sk_buff *skb)
@@ -177,18 +171,18 @@ static bool choke_match_flow(struct sk_buff *skb1, 
	if (!choke_skb_cb(skb1)->keys_valid) {

		choke_skb_cb(skb1)->keys_valid = 1;

		skb_flow_dissect(skb1, &temp);

		memcpy(&choke_skb_cb(skb1)->keys, &temp, CHOKE_K_LEN);

		make_flow_keys_digest(&choke_skb_cb(skb1)->keys, &temp);

	}



	if (!choke_skb_cb(skb2)->keys_valid) {

		choke_skb_cb(skb2)->keys_valid = 1;

		skb_flow_dissect(skb2, &temp);

		memcpy(&choke_skb_cb(skb2)->keys, &temp, CHOKE_K_LEN);

		make_flow_keys_digest(&choke_skb_cb(skb2)->keys, &temp);

	}



	return !memcmp(&choke_skb_cb(skb1)->keys,

		       &choke_skb_cb(skb2)->keys,

		       CHOKE_K_LEN);

		       sizeof(choke_skb_cb(skb1)->keys));

}



/*