diff options
| author | Michael Chan <michael.chan@broadcom.com> | 2016-12-29 12:13:41 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-12-29 14:37:23 -0500 |
| commit | 391be5c2736456f032fe0265031ecfe17aee84a0 (patch) | |
| tree | b4f36bffd2bf30a4a88c33e896a5e031224e11ad /drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | |
| parent | dda0e7465f040ed814d4a5c98c6bf042e59cba69 (diff) | |
| download | op-kernel-dev-391be5c2736456f032fe0265031ecfe17aee84a0.zip op-kernel-dev-391be5c2736456f032fe0265031ecfe17aee84a0.tar.gz | |
bnxt_en: Implement new scheme to reserve tx rings.
In order to properly support TX rate limiting in SRIOV VF functions or
NPAR functions, firmware needs better control over tx ring allocations.
The new scheme requires the driver to reserve the number of tx rings
and to query to see if the requested number of tx rings is reserved.
The driver will use the new scheme when the firmware interface spec is
1.6.1 or newer.
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_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index e6b1196..dd21be4 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -388,6 +388,7 @@ static int bnxt_set_channels(struct net_device *dev, { struct bnxt *bp = netdev_priv(dev); int max_rx_rings, max_tx_rings, tcs; + int req_tx_rings, rsv_tx_rings; u32 rc = 0; bool sh = false; @@ -423,6 +424,20 @@ static int bnxt_set_channels(struct net_device *dev, channel->tx_count > max_tx_rings)) return -ENOMEM; + req_tx_rings = sh ? channel->combined_count : channel->tx_count; + req_tx_rings = min_t(int, req_tx_rings, max_tx_rings); + if (tcs > 1) + req_tx_rings *= tcs; + + rsv_tx_rings = req_tx_rings; + if (bnxt_hwrm_reserve_tx_rings(bp, &rsv_tx_rings)) + return -ENOMEM; + + if (rsv_tx_rings < req_tx_rings) { + netdev_warn(dev, "Unable to allocate the requested tx rings\n"); + return -ENOMEM; + } + if (netif_running(dev)) { if (BNXT_PF(bp)) { /* TODO CHIMP_FW: Send message to all VF's |
