From dcc7e3a6a2a2464cf96dee329f7c58fe8c230d97 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Fri, 26 Aug 2011 09:45:40 +0000 Subject: [PATCH] cnic: Add timeout for ramrod replies. If the bnx2x device has encountered parity errors, the chip will not DMA any replies. Using wait_event_timeout() will allow us to make forward progress and let bnx2x reset the chip. Signed-off-by: Michael Chan Reviewed-by: Bhanu Prakash Gollapudi Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/cnic.c | 17 ++++++++++------- drivers/net/ethernet/broadcom/cnic.h | 2 ++ drivers/net/ethernet/broadcom/cnic_defs.h | 1 + 3 files changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c index 73060f4a2f5f..6f10c6939834 100644 --- a/drivers/net/ethernet/broadcom/cnic.c +++ b/drivers/net/ethernet/broadcom/cnic.c @@ -1875,12 +1875,12 @@ static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid) hw_cid, NONE_CONNECTION_TYPE, &l5_data); if (ret == 0) { - wait_event(ctx->waitq, ctx->wait_cond); + wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO); if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags))) return -EBUSY; } - return ret; + return 0; } static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe) @@ -2428,17 +2428,20 @@ static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe) init_waitqueue_head(&ctx->waitq); ctx->wait_cond = 0; + memset(&kcqe, 0, sizeof(kcqe)); + kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR; memset(&l5_data, 0, sizeof(l5_data)); ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid, FCOE_CONNECTION_TYPE, &l5_data); if (ret == 0) { - wait_event(ctx->waitq, ctx->wait_cond); - set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags); - queue_delayed_work(cnic_wq, &cp->delete_task, - msecs_to_jiffies(2000)); + wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO); + if (ctx->wait_cond) + kcqe.completion_status = 0; } - memset(&kcqe, 0, sizeof(kcqe)); + set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags); + queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000)); + kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN; kcqe.fcoe_conn_id = req->conn_id; kcqe.fcoe_conn_context_id = cid; diff --git a/drivers/net/ethernet/broadcom/cnic.h b/drivers/net/ethernet/broadcom/cnic.h index 15b1c09f1d5c..30328097f516 100644 --- a/drivers/net/ethernet/broadcom/cnic.h +++ b/drivers/net/ethernet/broadcom/cnic.h @@ -474,5 +474,7 @@ struct bnx2x_bd_chain_next { MAX_STAT_COUNTER_ID_E1)) #endif +#define CNIC_RAMROD_TMO (HZ / 4) + #endif diff --git a/drivers/net/ethernet/broadcom/cnic_defs.h b/drivers/net/ethernet/broadcom/cnic_defs.h index e47d21076767..239de898f071 100644 --- a/drivers/net/ethernet/broadcom/cnic_defs.h +++ b/drivers/net/ethernet/broadcom/cnic_defs.h @@ -67,6 +67,7 @@ #define FCOE_KWQE_OPCODE_DESTROY (10) #define FCOE_KWQE_OPCODE_STAT (11) +#define FCOE_KCQE_COMPLETION_STATUS_ERROR (0x1) #define FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE (0x3) /* KCQ (kernel completion queue) response op codes */ -- 2.34.1