5.15-stable review patch. If anyone has any objections, please let me know.
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From: Shravya KN shravya.k-n@broadcom.com
[ Upstream commit b74c2a2e9cc471e847abd87e50a2354c07e02040 ]
In bnxt_ets_validate(), the code incorrectly loops over all possible traffic classes to check and add the ETS settings. Fix it to loop over the configured traffic classes only.
The unconfigured traffic classes will default to TSA_ETS with 0 bandwidth. Looping over these unconfigured traffic classes may cause the validation to fail and trigger this error message:
"rejecting ETS config starving a TC\n"
The .ieee_setets() will then fail.
Fixes: 7df4ae9fe855 ("bnxt_en: Implement DCBNL to support host-based DCBX.") Reviewed-by: Sreekanth Reddy sreekanth.reddy@broadcom.com Signed-off-by: Shravya KN shravya.k-n@broadcom.com Signed-off-by: Michael Chan michael.chan@broadcom.com Link: https://patch.msgid.link/20250710213938.1959625-2-michael.chan@broadcom.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c index 228a5db7e1434..596513ffdfd9c 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c @@ -479,7 +479,9 @@ static int bnxt_ets_validate(struct bnxt *bp, struct ieee_ets *ets, u8 *tc)
if ((ets->tc_tx_bw[i] || ets->tc_tsa[i]) && i > bp->max_tc) return -EINVAL; + }
+ for (i = 0; i < max_tc; i++) { switch (ets->tc_tsa[i]) { case IEEE_8021QAZ_TSA_STRICT: break;