myri10ge: allow small_bytes = 0
Allow page-based receive to work when small_bytes is set to 0. Signed-off-by: Jon Mason <mason@myri.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 11 additions and 3 deletions
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@ -2004,8 +2004,12 @@ static int myri10ge_allocate_rings(struct myri10ge_slice_state *ss)
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ss->rx_big.page_offset = MYRI10GE_ALLOC_SIZE;
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ss->rx_small.watchdog_needed = 0;
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ss->rx_big.watchdog_needed = 0;
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myri10ge_alloc_rx_pages(mgp, &ss->rx_small,
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mgp->small_bytes + MXGEFW_PAD, 0);
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if (mgp->small_bytes == 0) {
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ss->rx_small.fill_cnt = ss->rx_small.mask + 1;
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} else {
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myri10ge_alloc_rx_pages(mgp, &ss->rx_small,
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mgp->small_bytes + MXGEFW_PAD, 0);
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}
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if (ss->rx_small.fill_cnt < ss->rx_small.mask + 1) {
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netdev_err(dev, "slice-%d: alloced only %d small bufs\n",
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@ -2031,6 +2035,8 @@ abort_with_rx_big_ring:
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}
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abort_with_rx_small_ring:
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if (mgp->small_bytes == 0)
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ss->rx_small.fill_cnt = ss->rx_small.cnt;
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for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) {
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int idx = i & ss->rx_small.mask;
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myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx],
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@ -2081,6 +2087,8 @@ static void myri10ge_free_rings(struct myri10ge_slice_state *ss)
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put_page(ss->rx_big.info[idx].page);
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}
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if (mgp->small_bytes == 0)
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ss->rx_small.fill_cnt = ss->rx_small.cnt;
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for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) {
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idx = i & ss->rx_small.mask;
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if (i == ss->rx_small.fill_cnt - 1)
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@ -2418,7 +2426,7 @@ static int myri10ge_open(struct net_device *dev)
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mgp->small_bytes = VLAN_ETH_FRAME_LEN;
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/* Override the small buffer size? */
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if (myri10ge_small_bytes > 0)
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if (myri10ge_small_bytes >= 0)
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mgp->small_bytes = myri10ge_small_bytes;
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/* Firmware needs the big buff size as a power of 2. Lie and
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