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qca-wifi: Enable vlan hw acceleration in Rx

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Enable vlan hardware acceleration support in Rx path
if multipass feature enabled.
It is expected for a packet to have vlan header in-placed
and vlan_id is padded with zero. If not, drop the frame with
proper error updation.
Update vlan_id if frame comes with special peer and has vlan
header in placed and vlan_id padded with 0.

Change-Id: Ife7a371dcca20634b0dc99f00cb02551dbff611f
CRs-Fixed: 2584007
This commit is contained in:
Ankit Kumar
2019-10-27 21:00:18 +05:30
committed by Gerrit - the friendly Code Review server
parent 46b3231f9f
commit f0ceb5ba1e
1 changed files with 15 additions and 25 deletions
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40
dp/wifi3.0/dp_txrx_wds.c
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@@ -605,42 +605,32 @@ bool dp_tx_multipass_process(struct dp_soc *soc, struct dp_vdev *vdev,
* *
* Return: bool: true in case of success else false * Return: bool: true in case of success else false
* Success is considered if: * Success is considered if:
* i. If frame doesn't come from special peer and do not need multipass processing. * i. If frame has vlan header
* ii. Successfully processed multipass processing. * ii. If the frame comes from different peer and dont need multipass processing
* Failure is considered if: * Failure is considered if:
* i. If frame needs to be dropped. * i. Frame comes from multipass peer but doesn't contain vlan header.
* In failure case, drop such frames.
*/ */
bool dp_rx_multipass_process(struct dp_peer *peer, qdf_nbuf_t nbuf, uint8_t tid) bool dp_rx_multipass_process(struct dp_peer *peer, qdf_nbuf_t nbuf, uint8_t tid)
{ {
qdf_ether_header_t *eh = (qdf_ether_header_t *)qdf_nbuf_data(nbuf); struct vlan_ethhdr *vethhdrp;
struct vlan_ethhdr vethhdr;
if (qdf_unlikely(!peer->vlan_id)) if (qdf_unlikely(!peer->vlan_id))
return true; return true;
if (qdf_unlikely(qdf_nbuf_headroom(nbuf) < ETHERTYPE_VLAN_LEN)) vethhdrp = (struct vlan_ethhdr *)qdf_nbuf_data(nbuf);
return true;
/* /*
* Form the VLAN header and insert in nbuf * h_vlan_proto & h_vlan_TCI should be 0x8100 & zero respectively
* as it is expected to be padded by 0
* return false if frame doesn't have above tag so that caller will
* drop the frame.
*/ */
qdf_mem_copy(vethhdr.h_dest, eh->ether_dhost, QDF_MAC_ADDR_SIZE); if (qdf_unlikely(vethhdrp->h_vlan_proto != htons(QDF_ETH_TYPE_8021Q)) ||
qdf_mem_copy(vethhdr.h_source, eh->ether_shost, QDF_MAC_ADDR_SIZE); qdf_unlikely(vethhdrp->h_vlan_TCI != 0))
vethhdr.h_vlan_proto = htons(QDF_ETH_TYPE_8021Q); return false;
vethhdr.h_vlan_TCI = htons(((tid & 0x7) << VLAN_PRIO_SHIFT) |
vethhdrp->h_vlan_TCI = htons(((tid & 0x7) << VLAN_PRIO_SHIFT) |
(peer->vlan_id & VLAN_VID_MASK)); (peer->vlan_id & VLAN_VID_MASK));
/*
* Packet format : DSTMAC | SRCMAC | <VLAN HEADERS TO BE INSERTED> | ETHERTYPE | IP HEADER
* DSTMAC: 6 BYTES
* SRCMAC: 6 BYTES
* VLAN HEADER: 4 BYTES ( TPID | PCP | VLAN ID)
* ETHERTYPE: 2 BYTES
*/
qdf_nbuf_push_head(nbuf, sizeof(struct vlan_hdr));
qdf_mem_copy(qdf_nbuf_data(nbuf), &vethhdr,
sizeof(struct vlan_ethhdr)- ETHERNET_TYPE_LEN);
return true; return true;
} }