diff options
| author | Jeffrey Huang <huangjw@broadcom.com> | 2016-02-26 12:00:00 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-03-01 23:37:00 +0300 |
| commit | 19241368443ff976b1924019d29eef8e972158e7 (patch) | |
| tree | 626bdcaa9f40de95122124e143d7e1034d1acada /drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c | |
| parent | 3874d6a8b61966a77aa743b4160ba96bf3081ce5 (diff) | |
| download | linux-19241368443ff976b1924019d29eef8e972158e7.tar.xz | |
bnxt_en: Send PF driver unload notification to all VFs.
During remove_one() when SRIOV is enabled, the PF driver
should broadcast PF driver unload notification to all
VFs that are attached to VMs. Upon receiving the PF
driver unload notification, the VF driver should print
a warning message to message log. Certain operations on the
VF may not succeed after the PF has unloaded.
Signed-off-by: Jeffrey Huang <huangjw@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c index 0b4ca35cee9b..9f6b4cc6bd0e 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c @@ -522,6 +522,46 @@ err_out1: return rc; } +static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp, + struct bnxt_vf_info *vf, + u16 event_id) +{ + int rc = 0; + struct hwrm_fwd_async_event_cmpl_input req = {0}; + struct hwrm_fwd_async_event_cmpl_output *resp = bp->hwrm_cmd_resp_addr; + struct hwrm_async_event_cmpl *async_cmpl; + + bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_ASYNC_EVENT_CMPL, -1, -1); + if (vf) + req.encap_async_event_target_id = cpu_to_le16(vf->fw_fid); + else + /* broadcast this async event to all VFs */ + req.encap_async_event_target_id = cpu_to_le16(0xffff); + async_cmpl = (struct hwrm_async_event_cmpl *)req.encap_async_event_cmpl; + async_cmpl->type = + cpu_to_le16(HWRM_ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT); + async_cmpl->event_id = cpu_to_le16(event_id); + + mutex_lock(&bp->hwrm_cmd_lock); + rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT); + + if (rc) { + netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n", + rc); + goto fwd_async_event_cmpl_exit; + } + + if (resp->error_code) { + netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl error %d\n", + resp->error_code); + rc = -1; + } + +fwd_async_event_cmpl_exit: + mutex_unlock(&bp->hwrm_cmd_lock); + return rc; +} + void bnxt_sriov_disable(struct bnxt *bp) { u16 num_vfs = pci_num_vf(bp->pdev); @@ -530,6 +570,9 @@ void bnxt_sriov_disable(struct bnxt *bp) return; if (pci_vfs_assigned(bp->pdev)) { + bnxt_hwrm_fwd_async_event_cmpl( + bp, NULL, + HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD); netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n", num_vfs); } else { |