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qcacmn: Enable GRO for TCP packets

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Add support for GRO functionality for TCP packets.
- Pass GRO config to DP layer as a part of dp_update_config_parameters
- Add API to read the number of active RX contexts from DP layer
  cdp_get_num_rx_contexts
- Fill GRO info into skb->cb from rx_tlv during dp_rx_process

CRs-Fixed: 2346995
Change-Id: I1c143d8ce2c7522ba2c76142fb6cc82193df5608
This commit is contained in:
Mohit Khanna
2018-10-30 14:12:03 -07:00
committed by nshrivas
parent 43938664a0
commit 16816ae8d0
8 changed files with 135 additions and 86 deletions
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85
dp/wifi3.0/dp_rx.c
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@@ -887,62 +887,51 @@ void dp_rx_process_invalid_peer_wrapper(struct dp_soc *soc,
}
#endif
#if defined(FEATURE_LRO)
static void dp_rx_print_lro_info(uint8_t *rx_tlv)
#ifdef RECEIVE_OFFLOAD
/**
* dp_rx_print_offload_info() - Print offload info from RX TLV
* @rx_tlv: RX TLV for which offload information is to be printed
*
* Return: None
*/
static void dp_rx_print_offload_info(uint8_t *rx_tlv)
{
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
FL("----------------------RX DESC LRO----------------------"));
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
FL("lro_eligible 0x%x"), HAL_RX_TLV_GET_LRO_ELIGIBLE(rx_tlv));
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
FL("pure_ack 0x%x"), HAL_RX_TLV_GET_TCP_PURE_ACK(rx_tlv));
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
FL("chksum 0x%x"), HAL_RX_TLV_GET_TCP_CHKSUM(rx_tlv));
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
FL("TCP seq num 0x%x"), HAL_RX_TLV_GET_TCP_SEQ(rx_tlv));
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
FL("TCP ack num 0x%x"), HAL_RX_TLV_GET_TCP_ACK(rx_tlv));
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
FL("TCP window 0x%x"), HAL_RX_TLV_GET_TCP_WIN(rx_tlv));
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
FL("TCP protocol 0x%x"), HAL_RX_TLV_GET_TCP_PROTO(rx_tlv));
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
FL("TCP offset 0x%x"), HAL_RX_TLV_GET_TCP_OFFSET(rx_tlv));
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
FL("toeplitz 0x%x"), HAL_RX_TLV_GET_FLOW_ID_TOEPLITZ(rx_tlv));
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
FL("---------------------------------------------------------"));
dp_debug("----------------------RX DESC LRO/GRO----------------------");
dp_debug("lro_eligible 0x%x", HAL_RX_TLV_GET_LRO_ELIGIBLE(rx_tlv));
dp_debug("pure_ack 0x%x", HAL_RX_TLV_GET_TCP_PURE_ACK(rx_tlv));
dp_debug("chksum 0x%x", HAL_RX_TLV_GET_TCP_CHKSUM(rx_tlv));
dp_debug("TCP seq num 0x%x", HAL_RX_TLV_GET_TCP_SEQ(rx_tlv));
dp_debug("TCP ack num 0x%x", HAL_RX_TLV_GET_TCP_ACK(rx_tlv));
dp_debug("TCP window 0x%x", HAL_RX_TLV_GET_TCP_WIN(rx_tlv));
dp_debug("TCP protocol 0x%x", HAL_RX_TLV_GET_TCP_PROTO(rx_tlv));
dp_debug("TCP offset 0x%x", HAL_RX_TLV_GET_TCP_OFFSET(rx_tlv));
dp_debug("toeplitz 0x%x", HAL_RX_TLV_GET_FLOW_ID_TOEPLITZ(rx_tlv));
dp_debug("---------------------------------------------------------");
}
/**
* dp_rx_lro() - LRO related processing
* @rx_tlv: TLV data extracted from the rx packet
* @peer: destination peer of the msdu
* @msdu: network buffer
* @ctx: LRO context
* dp_rx_fill_gro_info() - Fill GRO info from RX TLV into skb->cb
* @soc: DP SOC handle
* @rx_tlv: RX TLV received for the msdu
* @msdu: msdu for which GRO info needs to be filled
*
* This function performs the LRO related processing of the msdu
*
* Return: true: LRO enabled false: LRO is not enabled
* Return: None
*/
static void dp_rx_lro(uint8_t *rx_tlv, struct dp_peer *peer,
qdf_nbuf_t msdu, qdf_lro_ctx_t ctx)
static
void dp_rx_fill_gro_info(struct dp_soc *soc, uint8_t *rx_tlv,
qdf_nbuf_t msdu)
{
if (!peer || !peer->vdev || !peer->vdev->lro_enable) {
QDF_TRACE(QDF_MODULE_ID_TXRX, QDF_TRACE_LEVEL_DEBUG,
FL("no peer, no vdev or LRO disabled"));
QDF_NBUF_CB_RX_LRO_ELIGIBLE(msdu) = 0;
if (!wlan_cfg_is_gro_enabled(soc->wlan_cfg_ctx))
return;
/* Filling up RX offload info only for TCP packets */
if (!HAL_RX_TLV_GET_TCP_PROTO(rx_tlv))
return;
}
qdf_assert(rx_tlv);
dp_rx_print_lro_info(rx_tlv);
QDF_NBUF_CB_RX_LRO_ELIGIBLE(msdu) =
HAL_RX_TLV_GET_LRO_ELIGIBLE(rx_tlv);
QDF_NBUF_CB_RX_TCP_PURE_ACK(msdu) =
HAL_RX_TLV_GET_TCP_PURE_ACK(rx_tlv);
QDF_NBUF_CB_RX_TCP_CHKSUM(msdu) =
HAL_RX_TLV_GET_TCP_CHKSUM(rx_tlv);
QDF_NBUF_CB_RX_TCP_SEQ_NUM(msdu) =
@@ -959,15 +948,15 @@ static void dp_rx_lro(uint8_t *rx_tlv, struct dp_peer *peer,
HAL_RX_TLV_GET_TCP_OFFSET(rx_tlv);
QDF_NBUF_CB_RX_FLOW_ID(msdu) =
HAL_RX_TLV_GET_FLOW_ID_TOEPLITZ(rx_tlv);
QDF_NBUF_CB_RX_LRO_CTX(msdu) = (unsigned char *)ctx;
dp_rx_print_offload_info(rx_tlv);
}
#else
static void dp_rx_lro(uint8_t *rx_tlv, struct dp_peer *peer,
qdf_nbuf_t msdu, qdf_lro_ctx_t ctx)
static void dp_rx_fill_gro_info(struct dp_soc *soc, uint8_t *rx_tlv,
qdf_nbuf_t msdu)
{
}
#endif
#endif /* RECEIVE_OFFLOAD */
/**
* dp_rx_adjust_nbuf_len() - set appropriate msdu length in nbuf.
@@ -1756,7 +1745,7 @@ done:
}
}
dp_rx_lro(rx_tlv_hdr, peer, nbuf, int_ctx->lro_ctx);
dp_rx_fill_gro_info(soc, rx_tlv_hdr, nbuf);
qdf_nbuf_cb_update_peer_local_id(nbuf, peer->local_id);
DP_RX_LIST_APPEND(deliver_list_head,
deliver_list_tail,