[dpdk-dev] [PATCH] net/sfc: discard packets with bad CRC on EF10 ESSB Rx
Andrew Rybchenko
arybchenko at solarflare.com
Fri Jun 29 17:27:05 CEST 2018
Fixes: 390f9b8d82c9 ("net/sfc: support equal stride super-buffer Rx mode")
Cc: stable at dpdk.org
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
Reviewed-by: Ivan Malov <ivan.malov at oktetlabs.ru>
---
drivers/net/sfc/sfc_ef10_essb_rx.c | 7 +++++++
drivers/net/sfc/sfc_ef10_rx_ev.h | 6 +++++-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/net/sfc/sfc_ef10_essb_rx.c b/drivers/net/sfc/sfc_ef10_essb_rx.c
index 5f5af602c..a3b988fcf 100644
--- a/drivers/net/sfc/sfc_ef10_essb_rx.c
+++ b/drivers/net/sfc/sfc_ef10_essb_rx.c
@@ -322,6 +322,12 @@ sfc_ef10_essb_rx_get_pending(struct sfc_ef10_essb_rxq *rxq,
const efx_qword_t *qwordp;
uint16_t pkt_len;
+ /* Buffers to be discarded have 0 in packet type */
+ if (unlikely(m->packet_type == 0)) {
+ rte_mempool_put(rxq->refill_mb_pool, m);
+ goto next_buf;
+ }
+
rx_pkts[n_rx_pkts++] = m;
/* Parse pseudo-header */
@@ -357,6 +363,7 @@ sfc_ef10_essb_rx_get_pending(struct sfc_ef10_essb_rxq *rxq,
EFX_QWORD_FIELD(*qwordp,
ES_EZ_ESSB_RX_PREFIX_MARK);
+next_buf:
m = sfc_ef10_essb_next_mbuf(rxq, m);
} while (todo_bufs-- > 0);
}
diff --git a/drivers/net/sfc/sfc_ef10_rx_ev.h b/drivers/net/sfc/sfc_ef10_rx_ev.h
index 615bd29b4..37b40056e 100644
--- a/drivers/net/sfc/sfc_ef10_rx_ev.h
+++ b/drivers/net/sfc/sfc_ef10_rx_ev.h
@@ -37,8 +37,10 @@ sfc_ef10_rx_ev_to_offloads(const efx_qword_t rx_ev, struct rte_mbuf *m,
if (unlikely(rx_ev.eq_u64[0] &
rte_cpu_to_le_64((1ull << ESF_DZ_RX_ECC_ERR_LBN) |
(1ull << ESF_DZ_RX_ECRC_ERR_LBN) |
- (1ull << ESF_DZ_RX_PARSE_INCOMPLETE_LBN))))
+ (1ull << ESF_DZ_RX_PARSE_INCOMPLETE_LBN)))) {
+ /* Zero packet type is used as a marker to dicard bad packets */
goto done;
+ }
#if SFC_EF10_RX_EV_ENCAP_SUPPORT
switch (EFX_QWORD_FIELD(rx_ev, ESF_EZ_RX_ENCAP_HDR)) {
@@ -157,6 +159,8 @@ sfc_ef10_rx_ev_to_offloads(const efx_qword_t rx_ev, struct rte_mbuf *m,
SFC_ASSERT(false);
}
+ SFC_ASSERT(l2_ptype != 0);
+
done:
m->ol_flags = ol_flags & ol_mask;
m->packet_type = tun_ptype | l2_ptype | l3_ptype | l4_ptype;
--
2.17.1
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