From: Edwin Peer edwin.peer@broadcom.com
[ Upstream commit 62d4073e86e62e316bea2c53e77db10418fd5dd7 ]
The allocated ieee_ets structure goes out of scope without being freed, leaking memory. Appropriate result codes should be returned so that callers do not rely on invalid data passed by reference.
Also cache the ETS config retrieved from the device so that it doesn't need to be freed. The balance of the code was clearly written with the intent of having the results of querying the hardware cached in the device structure. The commensurate store was evidently missed though.
Fixes: 7df4ae9fe855 ("bnxt_en: Implement DCBNL to support host-based DCBX.") 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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c @@ -387,24 +387,26 @@ static int bnxt_dcbnl_ieee_getets(struct { struct bnxt *bp = netdev_priv(dev); struct ieee_ets *my_ets = bp->ieee_ets; + int rc;
ets->ets_cap = bp->max_tc;
if (!my_ets) { - int rc; - if (bp->dcbx_cap & DCB_CAP_DCBX_HOST) return 0;
my_ets = kzalloc(sizeof(*my_ets), GFP_KERNEL); if (!my_ets) - return 0; + return -ENOMEM; rc = bnxt_hwrm_queue_cos2bw_qcfg(bp, my_ets); if (rc) - return 0; + goto error; rc = bnxt_hwrm_queue_pri2cos_qcfg(bp, my_ets); if (rc) - return 0; + goto error; + + /* cache result */ + bp->ieee_ets = my_ets; }
ets->cbs = my_ets->cbs; @@ -413,6 +415,9 @@ static int bnxt_dcbnl_ieee_getets(struct memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa)); memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc)); return 0; +error: + kfree(my_ets); + return rc; }
static int bnxt_dcbnl_ieee_setets(struct net_device *dev, struct ieee_ets *ets)