qcacmn: Add new feature to support protocol tags
With this feature, using appropriate commands, link layer, network layer, transport layer and some of the application protocols can be tagged with the user provided tag values for easier identification of protocols. The supported protocols today are as follows. ARP, DHCPv4, DHCPv6, DNS over TCP (v4), DNS over TCP (v6), DNS over UDP (v4), DNS over UDP (v6), ICMPv4, ICMPv6, TCPv4, TCPv6, UDPv4, UDPv6, IPv4, IPv6, EAP. Receive packets are tagged by hardware. Tags are applied after the first matching rule. Hence it is recommended that the rules are programmed in such a way that tags are configured from application layer to data link layer to get expected results. Change-Id: Ibdc2bd2b78234f482074955e89fb93f05988eaca
This commit is contained in:
Karunakar Dasineni
committed by
nshrivas
nshrivas
parent
c71219ea55
commit
142f9baf47
@@ -929,6 +929,181 @@ static inline bool check_qwrap_multicast_loopback(struct dp_vdev *vdev,
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}
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#endif
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#if defined(WLAN_SUPPORT_RX_TAG_STATISTICS) && \
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defined(WLAN_SUPPORT_RX_PROTOCOL_TYPE_TAG)
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/*
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* dp_rx_update_rx_protocol_tag_stats() - Increments the protocol tag stats
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* for the given protocol type
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*
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* @soc: core txrx main context
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* @pdev: TXRX pdev context for which the stats should be incremented
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* @protocol_index: Protocol index for which the stats should be incremented
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* Return: void
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*/
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static inline void dp_rx_update_rx_protocol_tag_stats(struct dp_pdev *pdev,
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uint16_t protocol_index)
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{
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DP_STATS_INC(pdev, rx_protocol_tag_stats[protocol_index].tag_ctr, 1);
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}
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#else
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static inline void dp_rx_update_rx_protocol_tag_stats(struct dp_pdev *pdev,
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uint16_t protocol_index)
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{
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}
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#endif /* WLAN_SUPPORT_RX_TAG_STATISTICS */
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/*
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* dp_rx_update_protocol_tag() - Reads CCE metadata from the RX MSDU end TLV
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* and set the corresponding tag in QDF packet
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*
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* @soc : core txrx main context
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* @vdev : vdev on which the packet is received
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* @nbuf : QDF packet buffer on which the protocol tag should be set
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* @rx_tlv_hdr : base address where the RX TLVs starts
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* @update_stats : Flag to indicate whether to update stats or not
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* Return : void
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*/
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#ifdef WLAN_SUPPORT_RX_PROTOCOL_TYPE_TAG
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static inline void
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dp_rx_update_protocol_tag(struct dp_soc *soc, struct dp_vdev *vdev,
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qdf_nbuf_t nbuf, uint8_t *rx_tlv_hdr,
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bool update_stats)
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{
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uint16_t cce_metadata = RX_PROTOCOL_TAG_START_OFFSET;
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bool cce_match = false;
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struct dp_pdev *pdev = vdev->pdev;
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uint16_t protocol_tag = 0;
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if (qdf_unlikely(pdev->rx_protocol_tagging_enabled)) {
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/*
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* In case of raw frames, rx_attention and rx_msdu_end tlv
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* may be stale or invalid. Do not tag such frames.
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* Default decap_type is set to ethernet for monitor vdev,
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* therefore, cannot check decap_type for monitor mode.
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* We will call this only for eth frames from dp_rx_mon_dest.c.
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*/
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if (qdf_unlikely((pdev->monitor_vdev &&
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pdev->monitor_vdev == vdev) ||
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(vdev->rx_decap_type == htt_cmn_pkt_type_ethernet))) {
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/*
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* Check whether HW has filled in the CCE metadata in
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* this packet, if not filled, just return
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*/
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if (qdf_unlikely(
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hal_rx_msdu_cce_match_get(rx_tlv_hdr))) {
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cce_match = true;
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/* Get the cce_metadata from RX MSDU TLV */
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cce_metadata =
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(hal_rx_msdu_cce_metadata_get(rx_tlv_hdr) &
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RX_MSDU_END_16_CCE_METADATA_MASK);
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/*
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* Received CCE metadata should be within the
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* valid limits
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*/
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qdf_assert_always((cce_metadata >=
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RX_PROTOCOL_TAG_START_OFFSET) &&
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(cce_metadata <
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(RX_PROTOCOL_TAG_START_OFFSET +
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RX_PROTOCOL_TAG_MAX)));
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/*
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* The CCE metadata received is just the
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* packet_type + RX_PROTOCOL_TAG_START_OFFSET
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*/
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cce_metadata -= RX_PROTOCOL_TAG_START_OFFSET;
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/*
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* Update the QDF packet with the user-specified
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* tag/metadata by looking up tag value for
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* received protocol type.
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*/
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protocol_tag =
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pdev->rx_proto_tag_map[cce_metadata].tag;
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qdf_nbuf_set_rx_protocol_tag(nbuf,
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protocol_tag);
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if (qdf_unlikely(update_stats))
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dp_rx_update_rx_protocol_tag_stats(
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pdev, cce_metadata);
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}
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}
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QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO_LOW,
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"Seq:%u decap:%u CCE Match:%d ProtoID:%u Tag:%u US:%d",
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hal_rx_get_rx_sequence(rx_tlv_hdr),
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vdev->rx_decap_type, cce_match, cce_metadata,
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protocol_tag, update_stats);
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}
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}
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#else
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static inline void
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dp_rx_update_protocol_tag(struct dp_soc *soc, struct dp_vdev *vdev,
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qdf_nbuf_t nbuf, uint8_t *rx_tlv_hdr,
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bool update_stats)
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{
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/* Stub API */
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}
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#endif /* WLAN_SUPPORT_RX_PROTOCOL_TYPE_TAG */
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/*
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* dp_rx_mon_update_protocol_tag() - Performs necessary checks for monitor mode
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* and then tags appropriate packets
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* @soc : core txrx main context
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* @vdev : pdev on which packet is received
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* @msdu : QDF packet buffer on which the protocol tag should be set
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* @rx_desc : base address where the RX TLVs start
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* Return : void
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*/
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#ifdef WLAN_SUPPORT_RX_PROTOCOL_TYPE_TAG
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static inline
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void dp_rx_mon_update_protocol_tag(struct dp_soc *soc, struct dp_pdev *dp_pdev,
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qdf_nbuf_t msdu, void *rx_desc)
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{
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/*
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* Update the protocol tag in SKB for packets received on BSS.
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* Do not update tag stats since it would double actual received count
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*/
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if (qdf_unlikely(dp_pdev->rx_protocol_tagging_enabled &&
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dp_pdev->monitor_vdev &&
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(1 == dp_pdev->ppdu_info.rx_status.rxpcu_filter_pass)
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)) {
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uint32_t msdu_ppdu_id =
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HAL_RX_HW_DESC_GET_PPDUID_GET(rx_desc);
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if (msdu_ppdu_id !=
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dp_pdev->ppdu_info.com_info.ppdu_id) {
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QDF_TRACE(
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QDF_MODULE_ID_DP,
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QDF_TRACE_LEVEL_ERROR,
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"msdu_ppdu_id=%x,com_info.ppdu_id=%x",
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msdu_ppdu_id,
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dp_pdev->ppdu_info.com_info.ppdu_id);
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} else {
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struct mon_rx_status *pmon_rx_status;
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pmon_rx_status =
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&dp_pdev->ppdu_info.rx_status;
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if (pmon_rx_status->
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frame_control_info_valid &&
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((pmon_rx_status->frame_control &
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IEEE80211_FC0_TYPE_MASK) ==
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IEEE80211_FC0_TYPE_DATA)) {
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dp_rx_update_protocol_tag(
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soc,
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dp_pdev->monitor_vdev,
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msdu,
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rx_desc, false);
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}
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}
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}
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}
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#else
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static inline
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void dp_rx_mon_update_protocol_tag(struct dp_soc *soc, struct dp_pdev *dp_pdev,
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qdf_nbuf_t msdu, void *rx_desc)
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{
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/* Stub API */
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}
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#endif /* WLAN_SUPPORT_RX_PROTOCOL_TYPE_TAG */
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/*
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* dp_rx_buffers_replenish() - replenish rxdma ring with rx nbufs
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* called during dp rx initialization
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