diff options
| author | Edwin Peer <edwin.peer@broadcom.com> | 2020-09-27 13:42:11 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-27 13:35:45 -0700 |
| commit | c916062a8917463a469539eccee50d31e63c91c1 (patch) | |
| tree | 5ba247aefcf6887922247a8acbb0119337aec7f6 /drivers/net/ethernet | |
| parent | 9d6b648c3112012dac6d804d331cdd3a2247765c (diff) | |
bnxt_en: refactor code to limit speed advertising
Extract the code for determining an advertised speed is no longer
supported into a separate function. This will avoid some code
duplication in a later patch when supporting PAM4 speeds, since
these speeds are specified in a separate field.
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Edwin Peer <edwin.peer@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')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index b57f28d2e716..0ca4f7a78c5d 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -8835,6 +8835,13 @@ hwrm_phy_qcaps_exit: return rc; } +static bool bnxt_support_dropped(u16 advertising, u16 supported) +{ + u16 diff = advertising ^ supported; + + return ((supported | diff) != supported); +} + static int bnxt_update_link(struct bnxt *bp, bool chng_link_state) { int rc = 0; @@ -8842,7 +8849,6 @@ static int bnxt_update_link(struct bnxt *bp, bool chng_link_state) struct hwrm_port_phy_qcfg_input req = {0}; struct hwrm_port_phy_qcfg_output *resp = bp->hwrm_cmd_resp_addr; u8 link_up = link_info->link_up; - u16 diff; bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_QCFG, -1, -1); @@ -8941,13 +8947,11 @@ static int bnxt_update_link(struct bnxt *bp, bool chng_link_state) if (!BNXT_PHY_CFG_ABLE(bp)) return 0; - diff = link_info->support_auto_speeds ^ link_info->advertising; - if ((link_info->support_auto_speeds | diff) != - link_info->support_auto_speeds) { - /* An advertised speed is no longer supported, so we need to - * update the advertisement settings. Caller holds RTNL - * so we can modify link settings. - */ + /* Check if any advertised speeds are no longer supported. The caller + * holds the link_lock mutex, so we can modify link_info settings. + */ + if (bnxt_support_dropped(link_info->advertising, + link_info->support_auto_speeds)) { link_info->advertising = link_info->support_auto_speeds; if (link_info->autoneg & BNXT_AUTONEG_SPEED) bnxt_hwrm_set_link_setting(bp, true, false); |