scsi: target: cxgbit: Remove tx flow control code
Firmware does tx flow control so remove tx flow control code from the driver. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
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f178842224
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@ -207,7 +207,6 @@ struct cxgbit_sock {
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/* socket lock */
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/* socket lock */
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spinlock_t lock;
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spinlock_t lock;
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wait_queue_head_t waitq;
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wait_queue_head_t waitq;
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wait_queue_head_t ack_waitq;
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bool lock_owner;
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bool lock_owner;
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struct kref kref;
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struct kref kref;
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u32 max_iso_npdu;
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u32 max_iso_npdu;
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@ -1360,7 +1360,6 @@ cxgbit_pass_accept_req(struct cxgbit_device *cdev, struct sk_buff *skb)
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cxgbit_sock_reset_wr_list(csk);
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cxgbit_sock_reset_wr_list(csk);
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spin_lock_init(&csk->lock);
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spin_lock_init(&csk->lock);
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init_waitqueue_head(&csk->waitq);
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init_waitqueue_head(&csk->waitq);
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init_waitqueue_head(&csk->ack_waitq);
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csk->lock_owner = false;
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csk->lock_owner = false;
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if (cxgbit_alloc_csk_skb(csk)) {
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if (cxgbit_alloc_csk_skb(csk)) {
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@ -1887,7 +1886,6 @@ static void cxgbit_fw4_ack(struct cxgbit_sock *csk, struct sk_buff *skb)
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if (csk->snd_una != snd_una) {
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if (csk->snd_una != snd_una) {
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csk->snd_una = snd_una;
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csk->snd_una = snd_una;
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dst_confirm(csk->dst);
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dst_confirm(csk->dst);
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wake_up(&csk->ack_waitq);
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}
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}
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}
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}
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@ -284,18 +284,6 @@ void cxgbit_push_tx_frames(struct cxgbit_sock *csk)
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}
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}
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}
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}
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static bool cxgbit_lock_sock(struct cxgbit_sock *csk)
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{
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spin_lock_bh(&csk->lock);
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if (before(csk->write_seq, csk->snd_una + csk->snd_win))
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csk->lock_owner = true;
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spin_unlock_bh(&csk->lock);
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return csk->lock_owner;
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}
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static void cxgbit_unlock_sock(struct cxgbit_sock *csk)
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static void cxgbit_unlock_sock(struct cxgbit_sock *csk)
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{
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{
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struct sk_buff_head backlogq;
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struct sk_buff_head backlogq;
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@ -325,20 +313,16 @@ static int cxgbit_queue_skb(struct cxgbit_sock *csk, struct sk_buff *skb)
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{
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{
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int ret = 0;
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int ret = 0;
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wait_event_interruptible(csk->ack_waitq, cxgbit_lock_sock(csk));
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spin_lock_bh(&csk->lock);
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csk->lock_owner = true;
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spin_unlock_bh(&csk->lock);
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if (unlikely((csk->com.state != CSK_STATE_ESTABLISHED) ||
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if (unlikely((csk->com.state != CSK_STATE_ESTABLISHED) ||
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signal_pending(current))) {
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signal_pending(current))) {
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__kfree_skb(skb);
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__kfree_skb(skb);
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__skb_queue_purge(&csk->ppodq);
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__skb_queue_purge(&csk->ppodq);
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ret = -1;
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ret = -1;
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spin_lock_bh(&csk->lock);
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goto unlock;
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if (csk->lock_owner) {
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spin_unlock_bh(&csk->lock);
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goto unlock;
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}
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spin_unlock_bh(&csk->lock);
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return ret;
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}
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}
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csk->write_seq += skb->len +
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csk->write_seq += skb->len +
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