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bnxt_en: Fix bug in ethtool -L.

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When changing channels from combined to rx/tx or vice versa, the code
uses the wrong "sh" parameter to determine if we are reserving rings
for shared or non-shared mode.  It should be using the ethtool requested
"sh" parameter instead of the current "sh" parameter.

Fix it by passing the "sh" parameter to bnxt_reserve_rings().  For
ethtool, we will pass in the requested "sh" parameter.

Fixes: 391be5c273 ("bnxt_en: Implement new scheme to reserve tx rings.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2017-07-11 13:05:35 -04:00 committed by David S. Miller
parent f9b76ebd49
commit 3b6b34df34
4 changed files with 8 additions and 9 deletions
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9
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -6918,16 +6918,13 @@ static void bnxt_sp_task(struct work_struct *work)
}
/* Under rtnl_lock */
int bnxt_reserve_rings(struct bnxt *bp, int tx, int rx, int tcs, int tx_xdp)
int bnxt_reserve_rings(struct bnxt *bp, int tx, int rx, bool sh, int tcs,
int tx_xdp)
{
int max_rx, max_tx, tx_sets = 1;
int tx_rings_needed;
bool sh = true;
int rc;
if (!(bp->flags & BNXT_FLAG_SHARED_RINGS))
sh = false;
if (tcs)
tx_sets = tcs;
@ -7135,7 +7132,7 @@ int bnxt_setup_mq_tc(struct net_device *dev, u8 tc)
sh = true;
rc = bnxt_reserve_rings(bp, bp->tx_nr_rings_per_tc, bp->rx_nr_rings,
tc, bp->tx_nr_rings_xdp);
sh, tc, bp->tx_nr_rings_xdp);
if (rc)
return rc;

3
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -1301,7 +1301,8 @@ int bnxt_open_nic(struct bnxt *, bool, bool);
int bnxt_half_open_nic(struct bnxt *bp);
void bnxt_half_close_nic(struct bnxt *bp);
int bnxt_close_nic(struct bnxt *, bool, bool);
int bnxt_reserve_rings(struct bnxt *bp, int tx, int rx, int tcs, int tx_xdp);
int bnxt_reserve_rings(struct bnxt *bp, int tx, int rx, bool sh, int tcs,
int tx_xdp);
int bnxt_setup_mq_tc(struct net_device *dev, u8 tc);
int bnxt_get_max_rings(struct bnxt *, int *, int *, bool);
void bnxt_restore_pf_fw_resources(struct bnxt *bp);

3
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
View File

@ -432,7 +432,8 @@ static int bnxt_set_channels(struct net_device *dev,
}
tx_xdp = req_rx_rings;
}
rc = bnxt_reserve_rings(bp, req_tx_rings, req_rx_rings, tcs, tx_xdp);
rc = bnxt_reserve_rings(bp, req_tx_rings, req_rx_rings, sh, tcs,
tx_xdp);
if (rc) {
netdev_warn(dev, "Unable to allocate the requested rings\n");
return rc;

2
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
View File

@ -170,7 +170,7 @@ static int bnxt_xdp_set(struct bnxt *bp, struct bpf_prog *prog)
if (!tc)
tc = 1;
rc = bnxt_reserve_rings(bp, bp->tx_nr_rings_per_tc, bp->rx_nr_rings,
tc, tx_xdp);
true, tc, tx_xdp);
if (rc) {
netdev_warn(dev, "Unable to reserve enough TX rings to support XDP.\n");
return rc;