diff mbox series

[09/33] net/cnxk: update mbuf and rearm data for Rx inject packets

Message ID 20240910085909.1514457-10-ndabilpuram@marvell.com (mailing list archive)
State Changes Requested
Delegated to: Jerin Jacob
Headers
Series add Marvell cn20k SOC support for mempool and net |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Nithin Dabilpuram Sept. 10, 2024, 8:58 a.m. UTC 
From: Rakesh Kudurumalla <rkudurumalla@marvell.com>

When nix receives second pass packets injected to CPT
next segments of primary mbuf are accessed directly using
mbuf next pointer since we do not know at what offset mbuf
is available.To achieve this we do no update mbut next pointer
to NULL for Rx injected packets.

Signed-off-by: Rakesh Kudurumalla <rkudurumalla@marvell.com>
---
 drivers/net/cnxk/cn10k_rx.h | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/cnxk/cn10k_rx.h b/drivers/net/cnxk/cn10k_rx.h
index 9dde2bea57..990dfbee3e 100644
--- a/drivers/net/cnxk/cn10k_rx.h
+++ b/drivers/net/cnxk/cn10k_rx.h
@@ -709,6 +709,7 @@  nix_cqe_xtract_mseg(const union nix_rx_parse_u *rx, struct rte_mbuf *mbuf,
 	uint16_t later_skip = 0;
 	struct rte_mbuf *head;
 	const rte_iova_t *eol;
+	bool rx_inj = false;
 	uint64_t cq_w5 = 0;
 	uint16_t ihl = 0;
 	uint64_t fsz = 0;
@@ -729,7 +730,9 @@  nix_cqe_xtract_mseg(const union nix_rx_parse_u *rx, struct rte_mbuf *mbuf,
 		/* Rx Inject packet must have Match ID 0xFFFF and for this
 		 * wqe will get from address stored at mbuf+1 location
 		 */
-		if ((flags & NIX_RX_REAS_F) && hdr->w0.match_id == 0xFFFFU)
+		rx_inj = ((flags & NIX_RX_REAS_F) && ((hdr->w0.match_id == 0xFFFFU) ||
+					       (hdr->w0.cookie == 0xFFFFFFFFU)));
+		if (rx_inj)
 			wqe = (const uint64_t *)*((uint64_t *)(mbuf + 1));
 		else
 			wqe = (const uint64_t *)(mbuf + 1);
@@ -786,7 +789,8 @@  nix_cqe_xtract_mseg(const union nix_rx_parse_u *rx, struct rte_mbuf *mbuf,
 	later_skip = (uintptr_t)mbuf->buf_addr - (uintptr_t)mbuf;
 
 	while (nb_segs) {
-		mbuf->next = (struct rte_mbuf *)(*iova_list - later_skip);
+		if (!(flags & NIX_RX_REAS_F) || !rx_inj)
+			mbuf->next = (struct rte_mbuf *)(*iova_list - later_skip);
 		mbuf = mbuf->next;
 
 		RTE_MEMPOOL_CHECK_COOKIES(mbuf->pool, (void **)&mbuf, 1, 1);
@@ -804,7 +808,8 @@  nix_cqe_xtract_mseg(const union nix_rx_parse_u *rx, struct rte_mbuf *mbuf,
 		mbuf->data_len = sg_len;
 		sg = sg >> 16;
 		p = (uintptr_t)&mbuf->rearm_data;
-		*(uint64_t *)p = rearm & ~0xFFFF;
+		if (!(flags & NIX_RX_REAS_F) || !rx_inj)
+			*(uint64_t *)p = rearm & ~0xFFFF;
 		nb_segs--;
 		iova_list++;
 
@@ -1259,7 +1264,6 @@  cn10k_nix_rx_inj_prepare_mseg(struct rte_mbuf *m, uint64_t *cmd)
 			slist++;
 		}
 		m_next = m->next;
-		m->next = NULL;
 		m = m_next;
 	} while (nb_segs);