Instead of veryfing the Rx descriptor each time it's being used in the
driver code, now the verification happens on the HAL side.
This simplifies code a lot as instead of doing 2 validations, only
single one is needed. The driver have to check the rc value returned
by the ena_com upon reading the Rx descriptor and trigger the reset
if needed. It was previously the responsibility of the
validate_rx_req_id() function.
As part of the change, the version of the driver was bumped to v2.2.1.
Fixes: 2061fe41f212 ("net/ena: linearize Tx mbuf")
Signed-off-by: Ido Segev <id...@amazon.com>
Signed-off-by: Michal Krawczyk <m...@semihalf.com>
Reviewed-by: Igor Chauskin <igo...@amazon.com>
---
drivers/net/ena/base/ena_eth_com.c | 3 +++
drivers/net/ena/base/ena_plat_dpdk.h | 1 +
drivers/net/ena/ena_ethdev.c | 38 ++++++++--------------------
3 files changed, 14 insertions(+), 28 deletions(-)
diff --git a/drivers/net/ena/base/ena_eth_com.c
b/drivers/net/ena/base/ena_eth_com.c
index a35d92fbd3..5583a310a1 100644
--- a/drivers/net/ena/base/ena_eth_com.c
+++ b/drivers/net/ena/base/ena_eth_com.c
@@ -531,6 +531,7 @@ int ena_com_rx_pkt(struct ena_com_io_cq *io_cq,
{
struct ena_com_rx_buf_info *ena_buf = &ena_rx_ctx->ena_bufs[0];
struct ena_eth_io_rx_cdesc_base *cdesc = NULL;
+ u16 q_depth = io_cq->q_depth;
u16 cdesc_idx = 0;
u16 nb_hw_desc;
u16 i = 0;
@@ -559,6 +560,8 @@ int ena_com_rx_pkt(struct ena_com_io_cq *io_cq,
do {
ena_buf[i].len = cdesc->length;
ena_buf[i].req_id = cdesc->req_id;
+ if (unlikely(ena_buf[i].req_id >= q_depth))
+ return ENA_COM_EIO;
if (++i >= nb_hw_desc)
break;
diff --git a/drivers/net/ena/base/ena_plat_dpdk.h
b/drivers/net/ena/base/ena_plat_dpdk.h
index 48c77f0c19..a1d749f83f 100644
--- a/drivers/net/ena/base/ena_plat_dpdk.h
+++ b/drivers/net/ena/base/ena_plat_dpdk.h
@@ -51,6 +51,7 @@ typedef uint64_t dma_addr_t;
#define ENA_COM_FAULT -EFAULT
#define ENA_COM_TRY_AGAIN -EAGAIN
#define ENA_COM_UNSUPPORTED -EOPNOTSUPP
+#define ENA_COM_EIO -EIO
#define ____cacheline_aligned __rte_cache_aligned
diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index 111e830bfa..9ee9de6eb9 100644
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -28,7 +28,7 @@
#define DRV_MODULE_VER_MAJOR 2
#define DRV_MODULE_VER_MINOR 2
-#define DRV_MODULE_VER_SUBMINOR 0
+#define DRV_MODULE_VER_SUBMINOR 1
#define ENA_IO_TXQ_IDX(q) (2 * (q))
#define ENA_IO_RXQ_IDX(q) (2 * (q) + 1)
@@ -380,20 +380,6 @@ static inline void ena_tx_mbuf_prepare(struct rte_mbuf
*mbuf,
}
}
-static inline int validate_rx_req_id(struct ena_ring *rx_ring, uint16_t req_id)
-{
- if (likely(req_id < rx_ring->ring_size))
- return 0;
-
- PMD_DRV_LOG(ERR, "Invalid rx req_id: %hu\n", req_id);
-
- rx_ring->adapter->reset_reason = ENA_REGS_RESET_INV_RX_REQ_ID;
- rx_ring->adapter->trigger_reset = true;
- ++rx_ring->rx_stats.bad_req_id;
-
- return -EFAULT;
-}
-
static int validate_tx_req_id(struct ena_ring *tx_ring, u16 req_id)
{
struct ena_tx_buffer *tx_info = NULL;
@@ -1486,10 +1472,6 @@ static int ena_populate_rx_queue(struct ena_ring *rxq,
unsigned int count)
rte_prefetch0(mbufs[i + 4]);
req_id = rxq->empty_rx_reqs[next_to_use];
- rc = validate_rx_req_id(rxq, req_id);
- if (unlikely(rc))
- break;
-
rx_info = &rxq->rx_buffer_info[req_id];
rc = ena_add_single_rx_desc(rxq->ena_com_io_sq, mbuf, req_id);
@@ -2114,8 +2096,6 @@ static struct rte_mbuf *ena_rx_mbuf(struct ena_ring
*rx_ring,
len = ena_bufs[buf].len;
req_id = ena_bufs[buf].req_id;
- if (unlikely(validate_rx_req_id(rx_ring, req_id)))
- return NULL;
rx_info = &rx_ring->rx_buffer_info[req_id];
@@ -2139,10 +2119,6 @@ static struct rte_mbuf *ena_rx_mbuf(struct ena_ring
*rx_ring,
++buf;
len = ena_bufs[buf].len;
req_id = ena_bufs[buf].req_id;
- if (unlikely(validate_rx_req_id(rx_ring, req_id))) {
- rte_mbuf_raw_free(mbuf_head);
- return NULL;
- }
rx_info = &rx_ring->rx_buffer_info[req_id];
RTE_ASSERT(rx_info->mbuf != NULL);
@@ -2230,10 +2206,16 @@ static uint16_t eth_ena_recv_pkts(void *rx_queue,
struct rte_mbuf **rx_pkts,
&ena_rx_ctx);
if (unlikely(rc)) {
PMD_DRV_LOG(ERR, "ena_com_rx_pkt error %d\n", rc);
- rx_ring->adapter->reset_reason =
- ENA_REGS_RESET_TOO_MANY_RX_DESCS;
+ if (rc == ENA_COM_NO_SPACE) {
+ ++rx_ring->rx_stats.bad_desc_num;
+ rx_ring->adapter->reset_reason =
+ ENA_REGS_RESET_TOO_MANY_RX_DESCS;
+ } else {
+ ++rx_ring->rx_stats.bad_req_id;
+ rx_ring->adapter->reset_reason =
+ ENA_REGS_RESET_INV_RX_REQ_ID;
+ }
rx_ring->adapter->trigger_reset = true;
- ++rx_ring->rx_stats.bad_desc_num;
return 0;
}
--
2.25.1
