[PATCH net-next v2 08/11] bnxt_en: use link_lock instead of hwrm_cmd_lock to protect link_info
From: Michael Chan <michael.chan@broadcom.com>
Date: 2021-08-29 07:35:53
Subsystem:
broadcom bnxt_en 50 gigabit ethernet driver, networking drivers, the rest · Maintainers:
Michael Chan, Pavan Chebbi, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Edwin Peer <redacted> We currently use the hwrm_cmd_lock to serialize the update of the firmware's link status response data and the copying of link status data to the VF. This won't work when we update the firmware message APIs, so we use the link_lock mutex instead. All link_info data should be updated under the link_lock mutex. Also add link_lock to functions that touch link_info in __bnxt_open_nic() and bnxt_probe_phy(). The locking is probably not strictly necessary during probe, but it's more consistent. Signed-off-by: Edwin Peer <redacted> Reviewed-by: Michael Chan <michael.chan@broadcom.com> --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 5 +++++ drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c | 4 ++-- 2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 23486f382b91..b9aa56cc10d2 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c@@ -10008,7 +10008,9 @@ static int __bnxt_open_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init) bnxt_tx_enable(bp); mod_timer(&bp->timer, jiffies + bp->current_interval); /* Poll link status and check for SFP+ module status */ + mutex_lock(&bp->link_lock); bnxt_get_port_module_status(bp); + mutex_unlock(&bp->link_lock); /* VF-reps may need to be re-opened after the PF is re-opened */ if (BNXT_PF(bp))
@@ -12599,8 +12601,10 @@ static int bnxt_probe_phy(struct bnxt *bp, bool fw_dflt) if (!fw_dflt) return 0; + mutex_lock(&bp->link_lock); rc = bnxt_update_link(bp, false); if (rc) { + mutex_unlock(&bp->link_lock); netdev_err(bp->dev, "Probe phy can't update link (rc: %x)\n", rc); return rc;
@@ -12613,6 +12617,7 @@ static int bnxt_probe_phy(struct bnxt *bp, bool fw_dflt) link_info->support_auto_speeds = link_info->support_speeds; bnxt_init_ethtool_link_settings(bp); + mutex_unlock(&bp->link_lock); return 0; }
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
index 7b0e308e44c2..07e8e9f657e4 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c@@ -1032,10 +1032,10 @@ static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf) phy_qcfg_req = (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr; - mutex_lock(&bp->hwrm_cmd_lock); + mutex_lock(&bp->link_lock); memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp, sizeof(phy_qcfg_resp)); - mutex_unlock(&bp->hwrm_cmd_lock); + mutex_unlock(&bp->link_lock); phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp)); phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id; phy_qcfg_resp.valid = 1;
--
2.18.1
Attachments
- smime.p7s [application/pkcs7-signature] 4209 bytes