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| author | Sunil Goutham <sgoutham@cavium.com> | 2015-07-29 16:49:43 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-07-29 23:52:32 -0700 |
| commit | 3d7a8aaad8720edb301d40d4a9d7fa906c76ba34 (patch) | |
| tree | 6af5878f42360abf458a630aad9f5bd5db811bcf /drivers/net/ethernet/cavium/thunder/nic.h | |
| parent | 74840b83bd59ee51c591714470c6629ac18f424a (diff) | |
| download | lwn-3d7a8aaad8720edb301d40d4a9d7fa906c76ba34.tar.gz lwn-3d7a8aaad8720edb301d40d4a9d7fa906c76ba34.zip | |
net: thunderx: Set watchdog timeout value
If a txq (SQ) remains in stopped state after this timeout its
considered as stuck and interface is reinited.
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cavium/thunder/nic.h')
| -rw-r--r-- | drivers/net/ethernet/cavium/thunder/nic.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cavium/thunder/nic.h b/drivers/net/ethernet/cavium/thunder/nic.h index a0be076eba83..8aee250904ec 100644 --- a/drivers/net/ethernet/cavium/thunder/nic.h +++ b/drivers/net/ethernet/cavium/thunder/nic.h @@ -125,6 +125,15 @@ */ #define NICPF_CLK_PER_INT_TICK 2 +/* Time to wait before we decide that a SQ is stuck. + * + * Since both pkt rx and tx notifications are done with same CQ, + * when packets are being received at very high rate (eg: L2 forwarding) + * then freeing transmitted skbs will be delayed and watchdog + * will kick in, resetting interface. Hence keeping this value high. + */ +#define NICVF_TX_TIMEOUT (50 * HZ) + struct nicvf_cq_poll { u8 cq_idx; /* Completion queue index */ struct napi_struct napi; |