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qca-wifi: Add a new feature to support tagging of IPv4/v6 flows

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Tags are programmed using wlanconfig commands. Rx IPv4/v6
TCP/UDP packets matching a 5-tuple are tagged using HawkeyeV2 hardware.
Tags are populated in the skb->cb in the REO/exception/monitor data
path and sent to upper stack

CRs-Fixed: 2470521
Change-Id: Id581159ae2b4a00c290a775aad526032e3a53a7f
This commit is contained in:
Sumeet Rao
2019-06-18 21:45:28 -07:00
committed by Gerrit - the friendly Code Review server
parent 505d7d9c6c
commit 0ff576e867
2 changed files with 102 additions and 9 deletions
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110
dp/wifi3.0/dp_rx_mon_feature.c
View File

@@ -27,6 +27,7 @@
#include "dp_rx_mon.h"
#include "dp_internal.h"
#include "qdf_mem.h" /* qdf_mem_malloc,free */
#include "wlan_cfg.h"
#ifdef WLAN_RX_PKT_CAPTURE_ENH
@@ -112,10 +113,88 @@ dp_rx_populate_cdp_indication_mpdu_info(
cdp_mpdu_info->per_chain_rssi[i] = ppdu_info->rx_status.rssi[i];
}
#ifdef WLAN_SUPPORT_RX_FLOW_TAG
/**
* dp_rx_mon_enh_capture_set_flow_tag() - Tags the actual nbuf with
* cached flow tag data read from TLV
* @pdev: pdev structure
* @ppdu_info: ppdu info structure from monitor status ring
* @user_id: user ID on which the PPDU is received
* @nbuf: packet buffer on which metadata have to be updated
*
* Return: None
*/
void dp_rx_mon_enh_capture_set_flow_tag(struct dp_pdev *pdev,
struct hal_rx_ppdu_info *ppdu_info,
uint32_t user_id, qdf_nbuf_t nbuf)
{
struct dp_soc *soc = pdev->soc;
uint16_t fse_metadata;
if (user_id >= MAX_MU_USERS)
return;
if (qdf_likely(!wlan_cfg_is_rx_flow_tag_enabled(soc->wlan_cfg_ctx)))
return;
if (ppdu_info->rx_msdu_info[user_id].is_flow_idx_invalid)
return;
if (ppdu_info->rx_msdu_info[user_id].is_flow_idx_timeout)
return;
fse_metadata =
(uint16_t)ppdu_info->rx_msdu_info[user_id].fse_metadata & 0xFFFF;
/* update the skb->cb with the user-specified tag/metadata */
qdf_nbuf_set_rx_flow_tag(nbuf, fse_metadata);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
"Setting flow tag %u for userID %u", fse_metadata, user_id);
ppdu_info->rx_msdu_info[user_id].fse_metadata = 0;
ppdu_info->rx_msdu_info[user_id].flow_idx = 0;
ppdu_info->rx_msdu_info[user_id].is_flow_idx_timeout = false;
ppdu_info->rx_msdu_info[user_id].is_flow_idx_invalid = false;
}
/**
* dp_rx_mon_enh_capture_set_flow_tag_in_trailer - update msdu trailer
* with flow tag
* @nbuf: packet buffer on which metadata have to be updated
* @trailer: pointer to rx monitor-lite trailer
*
* Return: None
*/
static inline void dp_rx_mon_enh_capture_set_flow_tag_in_trailer(
qdf_nbuf_t nbuf, void *trailer)
{
uint16_t flow_tag = qdf_nbuf_get_rx_flow_tag(nbuf);
struct dp_rx_mon_enh_trailer_data *nbuf_trailer =
(struct dp_rx_mon_enh_trailer_data *)trailer;
if (!flow_tag)
return;
nbuf_trailer->flow_tag = flow_tag;
}
#else
void dp_rx_mon_enh_capture_set_flow_tag(struct dp_pdev *pdev,
struct hal_rx_ppdu_info *ppdu_info,
uint32_t user_id, qdf_nbuf_t nbuf)
{
}
static inline void dp_rx_mon_enh_capture_set_flow_tag_in_trailer(
qdf_nbuf_t nbuf, void *trailer)
{
}
#endif /* WLAN_SUPPORT_RX_FLOW_TAG */
#ifdef WLAN_SUPPORT_RX_PROTOCOL_TYPE_TAG
/*
* dp_rx_mon_enh_capture_set_protocol_tag() - Tags the actual nbuf with
* cached data read from TLV
* cached protocol tag data read from TLV
* @pdev: pdev structure
* @ppdu_info: ppdu info structure from monitor status ring
* @user_id: user ID on which the PPDU is received
@@ -162,8 +241,8 @@ dp_rx_mon_enh_capture_set_protocol_tag(struct dp_pdev *pdev,
* by looking up tag value for received protocol type.
*/
protocol_tag = pdev->rx_proto_tag_map[cce_metadata].tag;
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_INFO_LOW,
"%s: Setting ProtoID:%d Tag %u", __func__,
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
"Setting ProtoID:%d Tag %u in mon nbuf",
cce_metadata, protocol_tag);
qdf_nbuf_set_rx_protocol_tag(nbuf, protocol_tag);
}
@@ -256,6 +335,7 @@ uint16_t dp_rx_mon_enh_capture_update_trailer(struct dp_pdev *pdev,
{
uint64_t trailer;
uint8_t *dest;
struct dp_soc *soc = pdev->soc;
struct dp_rx_mon_enh_trailer_data *nbuf_trailer =
(struct dp_rx_mon_enh_trailer_data *)&trailer;
@@ -264,7 +344,12 @@ uint16_t dp_rx_mon_enh_capture_update_trailer(struct dp_pdev *pdev,
trailer = RX_MON_CAP_ENH_TRAILER;
dp_rx_mon_enh_capture_set_protocol_tag_in_trailer(nbuf, nbuf_trailer);
if (wlan_cfg_is_rx_mon_protocol_flow_tag_enabled(soc->wlan_cfg_ctx)) {
dp_rx_mon_enh_capture_set_protocol_tag_in_trailer(nbuf,
nbuf_trailer);
dp_rx_mon_enh_capture_set_flow_tag_in_trailer(nbuf,
nbuf_trailer);
}
/**
* Overwrite last 8 bytes of data with trailer. This is ok since we
@@ -424,6 +509,7 @@ dp_rx_mon_enh_capture_process(struct dp_pdev *pdev, uint32_t tlv_status,
/* Tag the MSDU/MPDU if a cce_metadata is valid */
if ((tlv_status == HAL_TLV_STATUS_MSDU_END) &&
(pdev->rx_enh_capture_mode == CDP_RX_ENH_CAPTURE_MPDU_MSDU)) {
bool is_rx_mon_protocol_flow_tag_en;
/**
* Proceed only if this is a data frame.
* We could also rx probes, etc.
@@ -445,12 +531,18 @@ dp_rx_mon_enh_capture_process(struct dp_pdev *pdev, uint32_t tlv_status,
*/
nbuf = msdu_list->tail;
/**
* Set the protocol tag value from CCE metadata.
*/
dp_rx_mon_enh_capture_tag_protocol_type(pdev, ppdu_info,
user_id, nbuf);
is_rx_mon_protocol_flow_tag_en =
wlan_cfg_is_rx_mon_protocol_flow_tag_enabled(
pdev->soc->wlan_cfg_ctx);
if (is_rx_mon_protocol_flow_tag_en) {
/* Set the protocol tag value from CCE metadata */
dp_rx_mon_enh_capture_tag_protocol_type(pdev, ppdu_info,
user_id, nbuf);
/* Set the flow tag from FSE metadata */
dp_rx_mon_enh_capture_set_flow_tag(pdev, ppdu_info,
user_id, nbuf);
}
if (!pdev->is_rx_enh_capture_trailer_enabled)
return;
/**