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authorSathya Perla <sathyap@serverengines.com>2009-06-10 02:23:28 +0000
committerDavid S. Miller <davem@davemloft.net>2009-06-11 02:47:18 -0700
commita7a0ef31def6b6badd94fc96c8f17c2e18d91513 (patch)
tree92fe215db7404bf3c112ddc4ea371d849338408e /drivers/net
parent76fbb42919396b9bf68c9a03ceb037c971a02e2f (diff)
be2net: Fix early reset of rx-completion
be_rx_compl_get() must not reset(via the valid word) the rx_compl as the rx_compl is not processed yet; it must be reset after it is processed. Signed-off-by: Sathya Perla <sathyap@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/benet/be_main.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index 5aadd71d461..86f70af93d6 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -876,12 +876,19 @@ static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
- rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
-
queue_tail_inc(&adapter->rx_obj.cq);
return rxcp;
}
+/* To reset the valid bit, we need to reset the whole word as
+ * when walking the queue the valid entries are little-endian
+ * and invalid entries are host endian
+ */
+static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
+{
+ rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
+}
+
static inline struct page *be_alloc_pages(u32 size)
{
gfp_t alloc_flags = GFP_ATOMIC;
@@ -1013,6 +1020,7 @@ static void be_rx_q_clean(struct be_adapter *adapter)
/* First cleanup pending rx completions */
while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
be_rx_compl_discard(adapter, rxcp);
+ be_rx_compl_reset(rxcp);
be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
}
@@ -1294,6 +1302,8 @@ int be_poll_rx(struct napi_struct *napi, int budget)
be_rx_compl_process_lro(adapter, rxcp);
else
be_rx_compl_process(adapter, rxcp);
+
+ be_rx_compl_reset(rxcp);
}
lro_flush_all(&adapter->rx_obj.lro_mgr);