From: John Daley Date: Wed, 10 Oct 2018 22:11:31 +0000 (-0700) Subject: net/enic: fix counter action X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=1b4ce87dc5e6;p=dpdk.git net/enic: fix counter action - track whether counter DMAs are active or not so they can be stopped if needed before DMA memory is freed - fix counter DMA shut-down by changing vnic_dev_counter_dma_cfg() to take the number of counters to DMA instead of high counter index and use num counters = 0 to shut off DMAs - remove unnecessary checks that DMA counter memory is valid and that counter DMAs are in use - change the minimum DMA period to match what 1400 series adapter is capable of - fix comments and change a couple variable names to make more sense Fixes: 86df6c4e2fce ("net/enic: support flow counter action") Signed-off-by: John Daley Reviewed-by: Hyong Youb Kim --- diff --git a/drivers/net/enic/base/vnic_dev.c b/drivers/net/enic/base/vnic_dev.c index 1a3656f870..fd303fece7 100644 --- a/drivers/net/enic/base/vnic_dev.c +++ b/drivers/net/enic/base/vnic_dev.c @@ -59,6 +59,7 @@ struct vnic_dev { dma_addr_t dma_handle); struct vnic_counter_counts *flow_counters; dma_addr_t flow_counters_pa; + u8 flow_counters_dma_active; }; #define VNIC_MAX_RES_HDR_SIZE \ @@ -618,18 +619,30 @@ int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats) /* * Configure counter DMA */ -int vnic_dev_counter_dma_cfg(struct vnic_dev *vdev, u32 period, u32 counter_idx) +int vnic_dev_counter_dma_cfg(struct vnic_dev *vdev, u32 period, + u32 num_counters) { u64 args[3]; int wait = 1000; + int err; - if (!vdev->flow_counters || counter_idx >= VNIC_MAX_FLOW_COUNTERS) + if (num_counters > VNIC_MAX_FLOW_COUNTERS) return -ENOMEM; + if (period > 0 && (period < VNIC_COUNTER_DMA_MIN_PERIOD || + num_counters == 0)) + return -EINVAL; - args[0] = counter_idx + 1; + args[0] = num_counters; args[1] = vdev->flow_counters_pa; args[2] = period; - return vnic_dev_cmd_args(vdev, CMD_COUNTER_DMA_CONFIG, args, 3, wait); + err = vnic_dev_cmd_args(vdev, CMD_COUNTER_DMA_CONFIG, args, 3, wait); + + /* record if DMAs need to be stopped on close */ + if (!err) + vdev->flow_counters_dma_active = (num_counters != 0 && + period != 0); + + return err; } int vnic_dev_close(struct vnic_dev *vdev) @@ -974,6 +987,7 @@ int vnic_dev_alloc_counter_mem(struct vnic_dev *vdev) * VNIC_MAX_FLOW_COUNTERS, &vdev->flow_counters_pa, (u8 *)name); + vdev->flow_counters_dma_active = 0; return vdev->flow_counters == NULL ? -ENOMEM : 0; } @@ -991,7 +1005,8 @@ void vnic_dev_unregister(struct vnic_dev *vdev) vdev->stats, vdev->stats_pa); if (vdev->flow_counters) { /* turn off counter DMAs before freeing memory */ - vnic_dev_counter_dma_cfg(vdev, 0, 0); + if (vdev->flow_counters_dma_active) + vnic_dev_counter_dma_cfg(vdev, 0, 0); vdev->free_consistent(vdev->priv, sizeof(struct vnic_counter_counts) @@ -1171,19 +1186,16 @@ bool vnic_dev_counter_query(struct vnic_dev *vdev, uint32_t idx, u64 a1 = reset ? 1 : 0; int wait = 1000; - if (vdev->flow_counters) { - /* Using counter DMA API, so counters avail in host memory */ - *packets = vdev->flow_counters[idx].vcc_packets; - *bytes = vdev->flow_counters[idx].vcc_bytes; - if (reset) - if (vnic_dev_cmd(vdev, CMD_COUNTER_QUERY, &a0, &a1, - wait)) - return false; - } else { + if (reset) { + /* query/reset returns updated counters */ if (vnic_dev_cmd(vdev, CMD_COUNTER_QUERY, &a0, &a1, wait)) return false; *packets = a0; *bytes = a1; + } else { + /* Get values DMA'd from the adapter */ + *packets = vdev->flow_counters[idx].vcc_packets; + *bytes = vdev->flow_counters[idx].vcc_bytes; } return true; } diff --git a/drivers/net/enic/base/vnic_dev.h b/drivers/net/enic/base/vnic_dev.h index 63751d8c5f..de2645c43e 100644 --- a/drivers/net/enic/base/vnic_dev.h +++ b/drivers/net/enic/base/vnic_dev.h @@ -119,7 +119,7 @@ int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, size_t size, int vnic_dev_stats_clear(struct vnic_dev *vdev); int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats); int vnic_dev_counter_dma_cfg(struct vnic_dev *vdev, u32 period, - u32 counter_idx); + u32 num_counters); int vnic_dev_hang_notify(struct vnic_dev *vdev); int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast, int broadcast, int promisc, int allmulti); diff --git a/drivers/net/enic/base/vnic_devcmd.h b/drivers/net/enic/base/vnic_devcmd.h index 0efcee2ffe..3aad2dbd50 100644 --- a/drivers/net/enic/base/vnic_devcmd.h +++ b/drivers/net/enic/base/vnic_devcmd.h @@ -634,6 +634,7 @@ enum vnic_devcmd_cmd { * (u32) a2 = DMA period in milliseconds (0 to disable) */ CMD_COUNTER_DMA_CONFIG = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 88), +#define VNIC_COUNTER_DMA_MIN_PERIOD 500 /* * Clear all counters on a vnic diff --git a/drivers/net/enic/enic.h b/drivers/net/enic/enic.h index e5f4d3b26a..7bca3cad2f 100644 --- a/drivers/net/enic/enic.h +++ b/drivers/net/enic/enic.h @@ -38,7 +38,9 @@ #define ENIC_PAGE_SIZE 4096 #define PAGE_ROUND_UP(x) \ ((((unsigned long)(x)) + ENIC_PAGE_SIZE-1) & (~(ENIC_PAGE_SIZE-1))) -#define VNIC_FLOW_COUNTER_UPDATE_MSECS 100 + +/* must be >= VNIC_COUNTER_DMA_MIN_PERIOD */ +#define VNIC_FLOW_COUNTER_UPDATE_MSECS 500 #define ENICPMD_VFIO_PATH "/dev/vfio/vfio" /*#define ENIC_DESC_COUNT_MAKE_ODD (x) do{if ((~(x)) & 1) { (x)--; } }while(0)*/ diff --git a/drivers/net/enic/enic_flow.c b/drivers/net/enic/enic_flow.c index 04fc351b3b..bb9ed037a5 100644 --- a/drivers/net/enic/enic_flow.c +++ b/drivers/net/enic/enic_flow.c @@ -1444,7 +1444,7 @@ enic_flow_add_filter(struct enic *enic, struct filter_v2 *enic_filter, if (ctr_idx > enic->max_flow_counter) { err = vnic_dev_counter_dma_cfg(enic->vdev, VNIC_FLOW_COUNTER_UPDATE_MSECS, - ctr_idx); + ctr_idx + 1); if (err) { rte_flow_error_set(error, -err, RTE_FLOW_ERROR_TYPE_ACTION_CONF, @@ -1477,7 +1477,7 @@ unwind_ctr_dma_cfg: /* reduce counter DMA size */ vnic_dev_counter_dma_cfg(enic->vdev, VNIC_FLOW_COUNTER_UPDATE_MSECS, - last_max_flow_ctr); + last_max_flow_ctr + 1); enic->max_flow_counter = last_max_flow_ctr; } unwind_ctr_alloc: diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c index 3eced2ce26..b2581322d5 100644 --- a/drivers/net/enic/enic_main.c +++ b/drivers/net/enic/enic_main.c @@ -1766,7 +1766,7 @@ int enic_probe(struct enic *enic) /* * Allocate the consistent memory for stats and counters upfront so - * both primary and secondary processes can dump stats. + * both primary and secondary processes can access them. */ err = vnic_dev_alloc_stats_mem(enic->vdev); if (err) {