[SCSI] fcoe: remove frame dropping code from fcoe_percpu_clean
commit e7a51997da
([SCSI] fcoe: flush per-cpu
thread work when destroying interface) added a skb flush to the fcoe_rx_list,
which ensures that we push any pending frames on the list through the per-cpu
receive thread. Because of this, its redundant to lock and scan the list
first, dropping any arriving frames.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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@ -2254,31 +2254,14 @@ static int fcoe_link_ok(struct fc_lport *lport)
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static void fcoe_percpu_clean(struct fc_lport *lport)
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static void fcoe_percpu_clean(struct fc_lport *lport)
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{
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{
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struct fcoe_percpu_s *pp;
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struct fcoe_percpu_s *pp;
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struct fcoe_rcv_info *fr;
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struct sk_buff *skb;
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struct sk_buff_head *list;
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struct sk_buff *skb, *next;
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struct sk_buff *head;
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unsigned int cpu;
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unsigned int cpu;
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for_each_possible_cpu(cpu) {
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for_each_possible_cpu(cpu) {
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pp = &per_cpu(fcoe_percpu, cpu);
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pp = &per_cpu(fcoe_percpu, cpu);
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spin_lock_bh(&pp->fcoe_rx_list.lock);
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list = &pp->fcoe_rx_list;
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head = list->next;
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for (skb = head; skb != (struct sk_buff *)list;
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skb = next) {
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next = skb->next;
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fr = fcoe_dev_from_skb(skb);
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if (fr->fr_dev == lport) {
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__skb_unlink(skb, list);
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kfree_skb(skb);
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}
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}
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if (!pp->thread || !cpu_online(cpu)) {
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if (!pp->thread || !cpu_online(cpu))
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spin_unlock_bh(&pp->fcoe_rx_list.lock);
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continue;
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continue;
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}
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skb = dev_alloc_skb(0);
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skb = dev_alloc_skb(0);
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if (!skb) {
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if (!skb) {
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@ -2287,6 +2270,7 @@ static void fcoe_percpu_clean(struct fc_lport *lport)
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}
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}
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skb->destructor = fcoe_percpu_flush_done;
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skb->destructor = fcoe_percpu_flush_done;
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spin_lock_bh(&pp->fcoe_rx_list.lock);
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__skb_queue_tail(&pp->fcoe_rx_list, skb);
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__skb_queue_tail(&pp->fcoe_rx_list, skb);
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if (pp->fcoe_rx_list.qlen == 1)
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if (pp->fcoe_rx_list.qlen == 1)
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wake_up_process(pp->thread);
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wake_up_process(pp->thread);
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