qcacmn: Properly handle RX REO reinject packets

Currently for REO reinject path, first fragment is in the
linear part of the skb buffer while other fragments are
appended to skb buffer as non-linear paged data. The other
point is that for REO reinject buffer, l3_header_padding is
not there, meaning ethernet header is right after struct
rx_pkt_tlvs.

Above implementation will have issues when WLAN IPA path is
enabled.

Firstly, IPA assumes data buffers are linear. Thus need to
linearize skb buffer before reinjecting into REO.

Secondly, when WLAN does IPA pipe connection, RX pkt offset
is hard-coded to RX_PKT_TLVS_LEN + L3_HEADER_PADDING. Thus
need to pad L3_HEADER_PADDING before ethernet header and
after struct rx_pkt_tlvs.

Change-Id: I36d41bc91d28c2580775a1d2e431e139ff02e19e
CRs-Fixed: 2469315

dp/wifi3.0/dp_rx_defrag.c

@@ -1006,8 +1006,8 @@ dp_rx_defrag_nwifi_to_8023(struct dp_soc *soc,
  *
  * Returns: QDF_STATUS
  */
- static QDF_STATUS dp_rx_defrag_reo_reinject(struct dp_peer *peer,
-					unsigned tid, qdf_nbuf_t head)
+static QDF_STATUS dp_rx_defrag_reo_reinject(struct dp_peer *peer,
+					    unsigned int tid, qdf_nbuf_t head)
 {
 	struct dp_pdev *pdev = peer->vdev->pdev;
 	struct dp_soc *soc = pdev->soc;
@@ -1025,6 +1025,12 @@ dp_rx_defrag_nwifi_to_8023(struct dp_soc *soc,
 	hal_ring_handle_t hal_srng = soc->reo_reinject_ring.hal_srng;
 	struct dp_rx_desc *rx_desc = peer->rx_tid[tid].head_frag_desc;
 
+	head = dp_ipa_handle_rx_reo_reinject(soc, head);
+	if (qdf_unlikely(!head)) {
+		dp_err_rl("IPA RX REO reinject failed");
+		return QDF_STATUS_E_FAILURE;
+	}
+
 	ent_ring_desc = hal_srng_src_get_next(soc->hal_soc, hal_srng);
 	if (!ent_ring_desc) {
 		QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR,