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event/octeontx: fix partial Rx packet handling

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When net/octeontx is connected to event/octeontx as an event Rx adapter,
PKI aka 'net/octeontx' can forward packets directly to SSO aka
'event/octeontx'.
When pumping traffic to PKI if flow control is disabled internal FIFOs
might be overrun causing partial l2 packets to be enqueued.
SSO receives <31:0> TAG tag calculated by PKI, in normal cases <31:28>
is always 0 which signifies RTE_EVENT_TYPE_ETHDEV. But in case of
partial received packets PKI sets the <31:0> TAG as 0xFFFFFFFF which
is an invalid event type.

Add a check to see if TAG is 0xFFFFFFFF and free the partial receive
packet.

Fixes: d0d654986018 ("net/octeontx: support event Rx adapter")
Cc: stable@dpdk.org

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
This commit is contained in:
Pavan Nikhilesh 2019-11-27 18:06:47 +05:30 committed by Thomas Monjalon
parent c8a1a172ae
commit 4a21216674
1 changed files with 15 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/event/octeontx/ssovf_worker.h
View File

@ -30,8 +30,7 @@ ssovf_octeontx_wqe_to_pkt(uint64_t work, uint16_t port_info)
octtx_wqe_t *wqe = (octtx_wqe_t *)(uintptr_t)work;
/* Get mbuf from wqe */
mbuf = (struct rte_mbuf *)((uintptr_t)wqe -
OCTTX_PACKET_WQE_SKIP);
mbuf = (struct rte_mbuf *)((uintptr_t)wqe - OCTTX_PACKET_WQE_SKIP);
rte_prefetch_non_temporal(mbuf);
mbuf->packet_type =
ptype_table[wqe->s.w2.lcty][wqe->s.w2.lety][wqe->s.w2.lfty];
@ -46,6 +45,16 @@ ssovf_octeontx_wqe_to_pkt(uint64_t work, uint16_t port_info)
return mbuf;
}
static __rte_always_inline void
ssovf_octeontx_wqe_free(uint64_t work)
{
octtx_wqe_t *wqe = (octtx_wqe_t *)(uintptr_t)work;
struct rte_mbuf *mbuf;
mbuf = (struct rte_mbuf *)((uintptr_t)wqe - OCTTX_PACKET_WQE_SKIP);
rte_pktmbuf_free(mbuf);
}
static __rte_always_inline uint16_t
ssows_get_work(struct ssows *ws, struct rte_event *ev)
{
@ -59,9 +68,13 @@ ssows_get_work(struct ssows *ws, struct rte_event *ev)
ws->cur_grp = sched_type_queue >> 2;
sched_type_queue = sched_type_queue << 38;
ev->event = sched_type_queue | (get_work0 & 0xffffffff);
if (get_work1 && ev->event_type == RTE_EVENT_TYPE_ETHDEV) {
ev->mbuf = ssovf_octeontx_wqe_to_pkt(get_work1,
(ev->event >> 20) & 0x7F);
} else if (unlikely((get_work0 & 0xFFFFFFFF) == 0xFFFFFFFF)) {
ssovf_octeontx_wqe_free(get_work1);
return 0;
} else {
ev->u64 = get_work1;
}