forcedeth: remove duplicate structure member in rx
Since both first_rx and rx_ring are the head of rx ring, it not necessary to use two structure members to statically indicate the head of rx ring. So first_rx is removed. CC: Srinivas Eeda <srinivas.eeda@oracle.com> CC: Joe Jin <joe.jin@oracle.com> CC: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -793,7 +793,7 @@ struct fe_priv {
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/* rx specific fields.
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* Locking: Within irq hander or disable_irq+spin_lock(&np->lock);
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*/
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union ring_type get_rx, put_rx, first_rx, last_rx;
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union ring_type get_rx, put_rx, last_rx;
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struct nv_skb_map *get_rx_ctx, *put_rx_ctx;
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struct nv_skb_map *first_rx_ctx, *last_rx_ctx;
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struct nv_skb_map *rx_skb;
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@ -1812,7 +1812,7 @@ static int nv_alloc_rx(struct net_device *dev)
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struct ring_desc *less_rx;
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less_rx = np->get_rx.orig;
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if (less_rx-- == np->first_rx.orig)
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if (less_rx-- == np->rx_ring.orig)
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less_rx = np->last_rx.orig;
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while (np->put_rx.orig != less_rx) {
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@ -1833,7 +1833,7 @@ static int nv_alloc_rx(struct net_device *dev)
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wmb();
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np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
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if (unlikely(np->put_rx.orig++ == np->last_rx.orig))
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np->put_rx.orig = np->first_rx.orig;
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np->put_rx.orig = np->rx_ring.orig;
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if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
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np->put_rx_ctx = np->first_rx_ctx;
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} else {
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@ -1853,7 +1853,7 @@ static int nv_alloc_rx_optimized(struct net_device *dev)
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struct ring_desc_ex *less_rx;
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less_rx = np->get_rx.ex;
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if (less_rx-- == np->first_rx.ex)
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if (less_rx-- == np->rx_ring.ex)
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less_rx = np->last_rx.ex;
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while (np->put_rx.ex != less_rx) {
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@ -1875,7 +1875,7 @@ static int nv_alloc_rx_optimized(struct net_device *dev)
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wmb();
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np->put_rx.ex->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX2_AVAIL);
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if (unlikely(np->put_rx.ex++ == np->last_rx.ex))
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np->put_rx.ex = np->first_rx.ex;
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np->put_rx.ex = np->rx_ring.ex;
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if (unlikely(np->put_rx_ctx++ == np->last_rx_ctx))
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np->put_rx_ctx = np->first_rx_ctx;
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} else {
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@ -1903,7 +1903,8 @@ static void nv_init_rx(struct net_device *dev)
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struct fe_priv *np = netdev_priv(dev);
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int i;
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np->get_rx = np->put_rx = np->first_rx = np->rx_ring;
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np->get_rx = np->rx_ring;
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np->put_rx = np->rx_ring;
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if (!nv_optimized(np))
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np->last_rx.orig = &np->rx_ring.orig[np->rx_ring_size-1];
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@ -2911,7 +2912,7 @@ static int nv_rx_process(struct net_device *dev, int limit)
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u64_stats_update_end(&np->swstats_rx_syncp);
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next_pkt:
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if (unlikely(np->get_rx.orig++ == np->last_rx.orig))
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np->get_rx.orig = np->first_rx.orig;
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np->get_rx.orig = np->rx_ring.orig;
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if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
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np->get_rx_ctx = np->first_rx_ctx;
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@ -3000,7 +3001,7 @@ static int nv_rx_process_optimized(struct net_device *dev, int limit)
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}
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next_pkt:
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if (unlikely(np->get_rx.ex++ == np->last_rx.ex))
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np->get_rx.ex = np->first_rx.ex;
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np->get_rx.ex = np->rx_ring.ex;
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if (unlikely(np->get_rx_ctx++ == np->last_rx_ctx))
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np->get_rx_ctx = np->first_rx_ctx;
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