xiaomi-sm8450/android_kernel_xiaomi_sm8450
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netxen: fix race in tx stop queue

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There is race between netif_stop_queue and netif_stopped_queue
check.So check once again if buffers are available to avoid race.
With above logic we can also get rid of tx lock in process_cmd_ring.

Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rajesh Borundia
2010-10-18 02:03:41 +00:00
committed by David S. Miller
parent 3666e0b04f
commit 7a9905e642
4 changed files with 22 additions and 18 deletions
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5
drivers/net/netxen/netxen_nic.h
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@@ -175,7 +175,10 @@
#define MAX_NUM_CARDS 4
#define MAX_BUFFERS_PER_CMD 32
#define TX_STOP_THRESH ((MAX_SKB_FRAGS >> 2) + 4)
#define MAX_TSO_HEADER_DESC 2
#define MGMT_CMD_DESC_RESV 4
#define TX_STOP_THRESH ((MAX_SKB_FRAGS >> 2) + MAX_TSO_HEADER_DESC \
+ MGMT_CMD_DESC_RESV)
#define NX_MAX_TX_TIMEOUTS 2
/*