diff options
| author | Jon Mason <mason@myri.com> | 2011-06-27 05:05:03 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-06-29 06:02:04 -0700 |
| commit | 4b47638ab25d90faf4e5499aecd8812f247181fd (patch) | |
| tree | 12d0b5dc75e334add70d9a7a3c7f1872ca5ffb8e | |
| parent | c689b81b4267b1335b11f18fe8a79c56880d9d43 (diff) | |
| download | blackbird-op-linux-4b47638ab25d90faf4e5499aecd8812f247181fd.tar.gz blackbird-op-linux-4b47638ab25d90faf4e5499aecd8812f247181fd.zip | |
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>
| -rw-r--r-- | drivers/net/myri10ge/myri10ge.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c index ca0345795fa6..57bb7f782c3c 100644 --- a/drivers/net/myri10ge/myri10ge.c +++ b/drivers/net/myri10ge/myri10ge.c @@ -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 |
