diff options
Diffstat (limited to 'dpdk/dpdk-16.04_patches/0024-net-enic-fix-Rx-scatter-with-multiple-queues.patch')
| -rw-r--r-- | dpdk/dpdk-16.04_patches/0024-net-enic-fix-Rx-scatter-with-multiple-queues.patch | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/dpdk/dpdk-16.04_patches/0024-net-enic-fix-Rx-scatter-with-multiple-queues.patch b/dpdk/dpdk-16.04_patches/0024-net-enic-fix-Rx-scatter-with-multiple-queues.patch new file mode 100644 index 00000000..d581702d --- /dev/null +++ b/dpdk/dpdk-16.04_patches/0024-net-enic-fix-Rx-scatter-with-multiple-queues.patch @@ -0,0 +1,80 @@ +From 658069b0c5994e260cd7d0a7dfc7f03d78dd4f5a Mon Sep 17 00:00:00 2001 +From: Nelson Escobar <neescoba@cisco.com> +Date: Tue, 28 Jun 2016 11:49:11 -0700 +Subject: [PATCH 24/25] net/enic: fix Rx scatter with multiple queues + +The Rx scatter patch failed to make a few changes and resulted in +problems when using multiple receive queues (RQs) in DPDK (ie RSS) +since the wrong adapter resources were being used. + +- get and use the correct completion queue index associated with a + receive queue. +- set the correct receive queue index when using RSS + +Fixes: 856d7ba7ed22 ("net/enic: support scattered Rx") + +Signed-off-by: Nelson Escobar <neescoba@cisco.com> +Reviewed-by: John Daley <johndale@cisco.com> +--- + drivers/net/enic/enic.h | 6 +++++- + drivers/net/enic/enic_main.c | 10 ++++++---- + 2 files changed, 11 insertions(+), 5 deletions(-) + +diff --git a/drivers/net/enic/enic.h b/drivers/net/enic/enic.h +index 175adb8..8b0fa05 100644 +--- a/drivers/net/enic/enic.h ++++ b/drivers/net/enic/enic.h +@@ -165,7 +165,11 @@ static inline unsigned int enic_data_rq(__rte_unused struct enic *enic, unsigned + + static inline unsigned int enic_cq_rq(__rte_unused struct enic *enic, unsigned int rq) + { +- return rq; ++ /* Scatter rx uses two receive queues together with one ++ * completion queue, so the completion queue number is no ++ * longer the same as the rq number. ++ */ ++ return rq / 2; + } + + static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq) +diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c +index 0547f3b..976c9da 100644 +--- a/drivers/net/enic/enic_main.c ++++ b/drivers/net/enic/enic_main.c +@@ -252,19 +252,20 @@ void enic_init_vnic_resources(struct enic *enic) + vnic_dev_stats_clear(enic->vdev); + + for (index = 0; index < enic->rq_count; index++) { ++ cq_idx = enic_cq_rq(enic, enic_sop_rq(enic, index)); ++ + vnic_rq_init(&enic->rq[enic_sop_rq(enic, index)], +- enic_cq_rq(enic, index), ++ cq_idx, + error_interrupt_enable, + error_interrupt_offset); + + data_rq = &enic->rq[enic_data_rq(enic, index)]; + if (data_rq->in_use) + vnic_rq_init(data_rq, +- enic_cq_rq(enic, index), ++ cq_idx, + error_interrupt_enable, + error_interrupt_offset); + +- cq_idx = enic_cq_rq(enic, index); + vnic_cq_init(&enic->cq[cq_idx], + 0 /* flow_control_enable */, + 1 /* color_enable */, +@@ -896,7 +897,8 @@ static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits) + return -ENOMEM; + + for (i = 0; i < (1 << rss_hash_bits); i++) +- (*rss_cpu_buf_va).cpu[i/4].b[i%4] = i % enic->rq_count; ++ (*rss_cpu_buf_va).cpu[i / 4].b[i % 4] = ++ enic_sop_rq(enic, i % enic->rq_count); + + err = enic_set_rss_cpu(enic, + rss_cpu_buf_pa, +-- +2.7.0 + |