diff options
| author | Alexander Lobakin <alexandr.lobakin@intel.com> | 2022-03-21 11:59:50 +0100 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2022-04-07 08:20:10 -0700 |
| commit | 135a161a5ea9e4f01b37defa53e7f5db43a7ca99 (patch) | |
| tree | 653c4e26ddde7d135fd0455a3c1b8a0fc6d6ad7d /drivers/net/ethernet/intel/ice/ice_switch.c | |
| parent | e8bd70250a821edb541c3abe1eacdad9f8dc7adf (diff) | |
| download | lwn-135a161a5ea9e4f01b37defa53e7f5db43a7ca99.tar.gz lwn-135a161a5ea9e4f01b37defa53e7f5db43a7ca99.zip | |
ice: switch: add and use u16[] aliases to ice_adv_lkup_elem::{h, m}_u
ice_adv_lkup_elem fields h_u and m_u are being accessed as raw u16
arrays in several places.
To reduce cast and braces burden, add permanent array-of-u16 aliases
with the same size as the `union ice_prot_hdr` itself via anonymous
unions to the actual struct declaration, and just access them
directly.
This:
- removes the need to cast the union to u16[] and then dereference
it each time -> reduces the horizon for potential bugs;
- improves -Warray-bounds coverage -- the array size is now known
at compilation time;
- addresses cppcheck complaints.
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_switch.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_switch.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c index 25b8f6f726eb..075df2474688 100644 --- a/drivers/net/ethernet/intel/ice/ice_switch.c +++ b/drivers/net/ethernet/intel/ice/ice_switch.c @@ -5811,12 +5811,12 @@ ice_fill_adv_dummy_packet(struct ice_adv_lkup_elem *lkups, u16 lkups_cnt, * over any significant packet data. */ for (j = 0; j < len / sizeof(u16); j++) - if (((u16 *)&lkups[i].m_u)[j]) + if (lkups[i].m_raw[j]) ((u16 *)(pkt + offset))[j] = (((u16 *)(pkt + offset))[j] & - ~((u16 *)&lkups[i].m_u)[j]) | - (((u16 *)&lkups[i].h_u)[j] & - ((u16 *)&lkups[i].m_u)[j]); + ~lkups[i].m_raw[j]) | + (lkups[i].h_raw[j] & + lkups[i].m_raw[j]); } s_rule->pdata.lkup_tx_rx.hdr_len = cpu_to_le16(pkt_len); @@ -6065,11 +6065,10 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups, /* get # of words we need to match */ word_cnt = 0; for (i = 0; i < lkups_cnt; i++) { - u16 j, *ptr; + u16 j; - ptr = (u16 *)&lkups[i].m_u; - for (j = 0; j < sizeof(lkups->m_u) / sizeof(u16); j++) - if (ptr[j] != 0) + for (j = 0; j < ARRAY_SIZE(lkups->m_raw); j++) + if (lkups[i].m_raw[j]) word_cnt++; } |