drivers/net/ethernet/intel/idpf/idpf_txrx.c:3025:34: warning: unused variable 'np'

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/intel-lab-lkp/linux/commits/Willem-de-Bruijn/net-rtnetlink-add-pacing_offload_horizon-attribute-to-net_device/20260831-172610
head:   69b32b4e203508fb1bcee3f427fab52eac49ff03
commit: 823b97f23d9e611040fcf018d85ce318ed1a549c idpf: support pacing offload
date:   7 days ago
config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20260907/202609072109.CNby2SVX-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260907/202609072109.CNby2SVX-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609072109.CNby2SVX-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/net/ethernet/intel/idpf/idpf_txrx.c: In function 'idpf_tx_splitq_set_txtime':
>> drivers/net/ethernet/intel/idpf/idpf_txrx.c:3025:34: warning: unused variable 'np' [-Wunused-variable]
    3025 |         struct idpf_netdev_priv *np = netdev_priv(skb->dev);
         |                                  ^~


vim +/np +3025 drivers/net/ethernet/intel/idpf/idpf_txrx.c

  3019	
  3020	static void idpf_tx_splitq_set_txtime(const struct sk_buff *skb,
  3021					      const struct idpf_tx_queue *tx_q,
  3022					      struct idpf_tx_splitq_params *tx_params)
  3023	{
  3024		const int offload_slack_ns = 400;
> 3025		struct idpf_netdev_priv *np = netdev_priv(skb->dev);
  3026		u64 ts, now, horizon;
  3027	
  3028		horizon = READ_ONCE(skb->dev->pacing_offload_horizon);
  3029		if (!horizon)
  3030			return;
  3031	
  3032		switch (skb->tstamp_type) {
  3033		case SKB_CLOCK_REALTIME:
  3034			ts = ktime_to_ns(ktime_add(skb->tstamp,
  3035						   ktime_mono_to_any(0, TK_OFFS_TAI) -
  3036						   ktime_mono_to_any(0, TK_OFFS_REAL)));
  3037			break;
  3038		case SKB_CLOCK_MONOTONIC:
  3039			ts = ktime_to_ns(ktime_mono_to_any(skb->tstamp, TK_OFFS_TAI));
  3040			break;
  3041		case SKB_CLOCK_TAI:
  3042			ts = ktime_to_ns(skb->tstamp);
  3043			break;
  3044		default:
  3045			WARN_ON_ONCE(1);
  3046			return;
  3047		}
  3048	
  3049		now = ktime_get_clocktai_ns();
  3050		if (ts < now + offload_slack_ns)
  3051			return;
  3052	
  3053		/* beyond offload horizon? set overflow bit only */
  3054		if (ts > now + horizon) {
  3055			tx_params->offload.desc_ts[2] =
  3056				IDPF_TXD_FLOW_SCH_HORIZON_OVERFLOW_M;
  3057			return;
  3058		}
  3059	
  3060		ts >>= tx_q->ts_gran_pow2;
  3061	
  3062		/* 0 is valid 23b timestamp, but also means field unset.
  3063		 * Increase by one to avoid this case
  3064		 */
  3065		if ((ts & 0x7fffff) == 0) {
  3066			tx_params->offload.desc_ts[0] = 1;
  3067			return;
  3068		}
  3069	
  3070		tx_params->offload.desc_ts[0] = ts & 0xff;
  3071		tx_params->offload.desc_ts[1] = (ts >> 8) & 0xff;
  3072		tx_params->offload.desc_ts[2] = ((ts >> 16) & 0x7f);
  3073	}
  3074	

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