From 679dfdc96ef9ae0b1a54098fc19986f93621c8cb Mon Sep 17 00:00:00 2001 From: Nitin Saxena Date: Mon, 12 Nov 2018 17:54:09 +0000 Subject: [PATCH] net/octeontx: fix mbuf corruption with large private sizes When the priv_size of the mbuf is > 128 bytes, the mbuf would not be properly constructed. This would lead to a corrupt mbuf. This patch fixes the issue by accounting for rte_pktmbuf_priv_size(pool) and RTE_PKTMBUF_HEADROOM while configuring first skip register calculation. Fixes: 197438ee9f18 ("net/octeontx: add Rx queue setup and release ops") Cc: stable@dpdk.org Suggested-by: Jerin Jacob Signed-off-by: Anoob Joseph Signed-off-by: Nitin Saxena Acked-by: Jerin Jacob --- drivers/net/octeontx/base/octeontx_pki_var.h | 13 +++++++++++-- drivers/net/octeontx/octeontx_ethdev.c | 3 ++- 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/net/octeontx/base/octeontx_pki_var.h b/drivers/net/octeontx/base/octeontx_pki_var.h index c793b655a4..f4661d24ed 100644 --- a/drivers/net/octeontx/base/octeontx_pki_var.h +++ b/drivers/net/octeontx/base/octeontx_pki_var.h @@ -7,8 +7,17 @@ #include -#define OCTTX_PACKET_WQE_SKIP 128 -#define OCTTX_PACKET_FIRST_SKIP 240 +#define OCTTX_PACKET_WQE_SKIP 128 +#define OCTTX_PACKET_FIRST_SKIP_MAXREGVAL 496 +#define OCTTX_PACKET_FIRST_SKIP_MAXLEN 512 +#define OCTTX_PACKET_FIRST_SKIP_ADJUST(x) \ + (RTE_MIN(x, OCTTX_PACKET_FIRST_SKIP_MAXREGVAL)) +#define OCTTX_PACKET_FIRST_SKIP_SUM(p) \ + (OCTTX_PACKET_WQE_SKIP \ + + rte_pktmbuf_priv_size(p) \ + + RTE_PKTMBUF_HEADROOM) +#define OCTTX_PACKET_FIRST_SKIP(p) \ + OCTTX_PACKET_FIRST_SKIP_ADJUST(OCTTX_PACKET_FIRST_SKIP_SUM(p)) #define OCTTX_PACKET_LATER_SKIP 128 /* WQE descriptor */ diff --git a/drivers/net/octeontx/octeontx_ethdev.c b/drivers/net/octeontx/octeontx_ethdev.c index 0681486241..a3063be426 100644 --- a/drivers/net/octeontx/octeontx_ethdev.c +++ b/drivers/net/octeontx/octeontx_ethdev.c @@ -844,10 +844,11 @@ octeontx_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t qidx, pktbuf_conf.mmask.f_cache_mode = 1; pktbuf_conf.wqe_skip = OCTTX_PACKET_WQE_SKIP; - pktbuf_conf.first_skip = OCTTX_PACKET_FIRST_SKIP; + pktbuf_conf.first_skip = OCTTX_PACKET_FIRST_SKIP(mb_pool); pktbuf_conf.later_skip = OCTTX_PACKET_LATER_SKIP; pktbuf_conf.mbuff_size = (mb_pool->elt_size - RTE_PKTMBUF_HEADROOM - + rte_pktmbuf_priv_size(mb_pool) - sizeof(struct rte_mbuf)); pktbuf_conf.cache_mode = PKI_OPC_MODE_STF2_STT; -- 2.20.1