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From: Huawei Xie <huawei.xie@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH] lib/librte_pmd_i40e: i40e vlan filter set fix
Date: Sun, 28 Sep 2014 13:49:12 +0800
Message-ID: <1411883352-22166-1-git-send-email-huawei.xie@intel.com> (raw)

the right shift bits should be 5 rather than 4.
    vid_idx = (uint32_t) ((vlan_id >> 5 ) & 0x7F)

Signed-off-by: Huawei Xie <huawei.xie@intel.com>
CC: Jing Chen <jing.d.chen@intel.com>
CC: Helin Zhang <helin.zhang@intel.com>

---
 lib/librte_pmd_i40e/i40e_ethdev.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/lib/librte_pmd_i40e/i40e_ethdev.c b/lib/librte_pmd_i40e/i40e_ethdev.c
index 9009bd4..9c9d831 100644
--- a/lib/librte_pmd_i40e/i40e_ethdev.c
+++ b/lib/librte_pmd_i40e/i40e_ethdev.c
@@ -3786,14 +3786,11 @@ i40e_set_vlan_filter(struct i40e_vsi *vsi,
 {
 	uint32_t vid_idx, vid_bit;
 
-#define UINT32_BIT_MASK      0x1F
-#define VALID_VLAN_BIT_MASK  0xFFF
 	/* VFTA is 32-bits size array, each element contains 32 vlan bits, Find the
 	 *  element first, then find the bits it belongs to
 	 */
-	vid_idx = (uint32_t) ((vlan_id & VALID_VLAN_BIT_MASK) >>
-		  sizeof(uint32_t));
-	vid_bit = (uint32_t) (1 << (vlan_id & UINT32_BIT_MASK));
+	vid_idx = (uint32_t) ((vlan_id >> 5 ) & 0x7F);
+	vid_bit = (uint32_t) (1 << (vlan_id & 0x1F));
 
 	if (on)
 		vsi->vfta[vid_idx] |= vid_bit;
-- 
1.8.1.4

             reply	other threads:[~2014-09-28  5:43 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-28  5:49 Huawei Xie [this message]
2014-10-11  7:20 ` Chen, Jing D
2014-11-06  0:22 ` Xie, Huawei
2014-11-06  8:37   ` Thomas Monjalon

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