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myri10ge: allow small_bytes = 0

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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>
This commit is contained in:
Jon Mason 2011-06-27 05:05:03 +00:00 committed by David S. Miller
parent c689b81b42
commit 4b47638ab2
1 changed files with 11 additions and 3 deletions
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14
drivers/net/myri10ge/myri10ge.c
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@ -2004,8 +2004,12 @@ static int myri10ge_allocate_rings(struct myri10ge_slice_state *ss)
ss->rx_big.page_offset = MYRI10GE_ALLOC_SIZE;
ss->rx_small.watchdog_needed = 0;
ss->rx_big.watchdog_needed = 0;
myri10ge_alloc_rx_pages(mgp, &ss->rx_small,
mgp->small_bytes + MXGEFW_PAD, 0);
if (mgp->small_bytes == 0) {
ss->rx_small.fill_cnt = ss->rx_small.mask + 1;
} else {
myri10ge_alloc_rx_pages(mgp, &ss->rx_small,
mgp->small_bytes + MXGEFW_PAD, 0);
}
if (ss->rx_small.fill_cnt < ss->rx_small.mask + 1) {
netdev_err(dev, "slice-%d: alloced only %d small bufs\n",
@ -2031,6 +2035,8 @@ abort_with_rx_big_ring:
}
abort_with_rx_small_ring:
if (mgp->small_bytes == 0)
ss->rx_small.fill_cnt = ss->rx_small.cnt;
for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) {
int idx = i & ss->rx_small.mask;
myri10ge_unmap_rx_page(mgp->pdev, &ss->rx_small.info[idx],
@ -2081,6 +2087,8 @@ static void myri10ge_free_rings(struct myri10ge_slice_state *ss)
put_page(ss->rx_big.info[idx].page);
}
if (mgp->small_bytes == 0)
ss->rx_small.fill_cnt = ss->rx_small.cnt;
for (i = ss->rx_small.cnt; i < ss->rx_small.fill_cnt; i++) {
idx = i & ss->rx_small.mask;
if (i == ss->rx_small.fill_cnt - 1)
@ -2418,7 +2426,7 @@ static int myri10ge_open(struct net_device *dev)
mgp->small_bytes = VLAN_ETH_FRAME_LEN;
/* Override the small buffer size? */
if (myri10ge_small_bytes > 0)
if (myri10ge_small_bytes >= 0)
mgp->small_bytes = myri10ge_small_bytes;
/* Firmware needs the big buff size as a power of 2. Lie and