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Commit 17f14d7c authored by Arend van Spriel's avatar Arend van Spriel Committed by John W. Linville
Browse files

brcmutil: add dequeue function with filtering 



Adding a packet dequeue function that will return packets that
pass the provided match function.

Reviewed-by: default avatarPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: default avatarHante Meuleman <meuleman@broadcom.com>
Reviewed-by: default avatarPiotr Haber <phaber@broadcom.com>
Signed-off-by: default avatarArend van Spriel <arend@broadcom.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 6fc9ca13

drivers/net/wireless/brcm80211/brcmutil/utils.c

+25 −0
Original line number Diff line number Diff line
@@ -116,6 +116,31 @@ struct sk_buff *brcmu_pktq_pdeq(struct pktq *pq, int prec) 
}

EXPORT_SYMBOL(brcmu_pktq_pdeq);



/*

 * precedence based dequeue with match function. Passing a NULL pointer

 * for the match function parameter is considered to be a wildcard so

 * any packet on the queue is returned. In that case it is no different

 * from brcmu_pktq_pdeq() above.

 */

struct sk_buff *brcmu_pktq_pdeq_match(struct pktq *pq, int prec,

				      bool (*match_fn)(struct sk_buff *skb,

						       void *arg), void *arg)

{

	struct sk_buff_head *q;

	struct sk_buff *p, *next;



	q = &pq->q[prec].skblist;

	skb_queue_walk_safe(q, p, next) {

		if (match_fn == NULL || match_fn(p, arg)) {

			skb_unlink(p, q);

			pq->len--;

			return p;

		}

	}

	return NULL;

}

EXPORT_SYMBOL(brcmu_pktq_pdeq_match);



struct sk_buff *brcmu_pktq_pdeq_tail(struct pktq *pq, int prec)

{

	struct sk_buff_head *q;

drivers/net/wireless/brcm80211/include/brcmu_utils.h

+4 −0
Original line number Diff line number Diff line
@@ -120,6 +120,10 @@ extern struct sk_buff *brcmu_pktq_penq_head(struct pktq *pq, int prec, 
				      struct sk_buff *p);

extern struct sk_buff *brcmu_pktq_pdeq(struct pktq *pq, int prec);

extern struct sk_buff *brcmu_pktq_pdeq_tail(struct pktq *pq, int prec);

extern struct sk_buff *brcmu_pktq_pdeq_match(struct pktq *pq, int prec,

					     bool (*match_fn)(struct sk_buff *p,

							      void *arg),

					     void *arg);



/* packet primitives */

extern struct sk_buff *brcmu_pkt_buf_get_skb(uint len);