From f03d5a02fc2b3cc24bf059a273ea1473cdb9993b Mon Sep 17 00:00:00 2001
From: John Lo <loj@cisco.com>
Date: Tue, 7 Jun 2016 12:40:07 +0200
Subject: [PATCH 16/17] ENIC scatter RX
---
drivers/net/enic/base/rq_enet_desc.h | 2 +-
drivers/net/enic/base/vnic_rq.c | 12 +-
drivers/net/enic/base/vnic_rq.h | 18 ++-
drivers/net/enic/enic.h | 10 ++
drivers/net/enic/enic_main.c | 236 +++++++++++++++++++++++++++--------
drivers/net/enic/enic_rxtx.c | 139 ++++++++++++++-------
6 files changed, 313 insertions(+), 104 deletions(-)
diff --git a/drivers/net/enic/base/rq_enet_desc.h b/drivers/net/enic/base/rq_enet_desc.h
index 7292d9d..13e24b4 100644
--- a/drivers/net/enic/base/rq_enet_desc.h
+++ b/drivers/net/enic/base/rq_enet_desc.h
@@ -55,7 +55,7 @@ enum rq_enet_type_types {
#define RQ_ENET_TYPE_BITS 2
#define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1)
-static inline void rq_enet_desc_enc(struct rq_enet_desc *desc,
+static inline void rq_enet_desc_enc(volatile struct rq_enet_desc *desc,
u64 address, u8 type, u16 length)
{
desc->address = cpu_to_le64(address);
diff --git a/drivers/net/enic/base/vnic_rq.c b/drivers/net/enic/base/vnic_rq.c
index cb62c5e..d97f93e 100644
--- a/drivers/net/enic/base/vnic_rq.c
+++ b/drivers/net/enic/base/vnic_rq.c
@@ -84,11 +84,16 @@ void vnic_rq_init_start(struct vnic_rq *rq, unsigned int cq_index,
iowrite32(cq_index, &rq->ctrl->cq_index);
iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);
iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);
- iowrite32(0, &rq->ctrl->dropped_packet_count);
iowrite32(0, &rq->ctrl->error_status);
iowrite32(fetch_index, &rq->ctrl->fetch_index);
iowrite32(posted_index, &rq->ctrl->posted_index);
-
+ if (rq->is_sop) {
+// printf("Writing 0x%x to %s rq\n",
+// ((rq->is_sop << 10) | rq->data_queue_idx),
+// rq->is_sop ? "sop":"data");
+ iowrite32(((rq->is_sop << 10) | rq->data_queue_idx),
+ &rq->ctrl->data_ring);
+ }
}
void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
@@ -96,6 +101,7 @@ void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
unsigned int error_interrupt_offset)
{
u32 fetch_index = 0;
+
/* Use current fetch_index as the ring starting point */
fetch_index = ioread32(&rq->ctrl->fetch_index);
@@ -110,6 +116,8 @@ void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
error_interrupt_offset);
rq->rxst_idx = 0;
rq->tot_pkts = 0;
+ rq->pkt_first_seg = NULL;
+ rq->pkt_last_seg = NULL;
}
void vnic_rq_error_out(struct vnic_rq *rq, unsigned int error)
diff --git a/drivers/net/enic/base/vnic_rq.h b/drivers/net/enic/base/vnic_rq.h
index 424415c..d1e2f52 100644
--- a/drivers/net/enic/base/vnic_rq.h
+++ b/drivers/net/enic/base/vnic_rq.h
@@ -60,10 +60,18 @@ struct vnic_rq_ctrl {
u32 pad7;
u32 error_status; /* 0x48 */
u32 pad8;
- u32 dropped_packet_count; /* 0x50 */
+ u32 tcp_sn; /* 0x50 */
u32 pad9;
- u32 dropped_packet_count_rc; /* 0x58 */
+ u32 unused; /* 0x58 */
u32 pad10;
+ u32 dca_select; /* 0x60 */
+ u32 pad11;
+ u32 dca_value; /* 0x68 */
+ u32 pad12;
+ u32 data_ring; /* 0x70 */
+ u32 pad13;
+ u32 header_split; /* 0x78 */
+ u32 pad14;
};
struct vnic_rq {
@@ -82,6 +90,12 @@ struct vnic_rq {
struct rte_mempool *mp;
uint16_t rxst_idx;
uint32_t tot_pkts;
+ uint16_t data_queue_idx;
+ uint8_t is_sop;
+ uint8_t in_use;
+ struct rte_mbuf *pkt_first_seg;
+ struct rte_mbuf *pkt_last_seg;
+ unsigned int max_mbufs_per_pkt;
};
static inline unsigned int vnic_rq_desc_avail(struct vnic_rq *rq)
diff --git a/drivers/net/enic/enic.h b/drivers/net/enic/enic.h
index 7c1b5c9..d2de6ee 100644
--- a/drivers/net/enic/enic.h
+++ b/drivers/net/enic/enic.h
@@ -142,6 +142,16 @@ struct enic {
struct enic_soft_stats soft_stats;
};
+static inline unsigned int enic_sop_rq(__rte_unused struct enic *enic, unsigned int rq)
+{
+ return rq * 2;
+}
+
+static inline unsigned int enic_data_rq(__rte_unused struct enic *enic, unsigned int rq)
+{
+ return rq * 2 + 1;
+}
+
static inline unsigned int enic_cq_rq(__rte_unused struct enic *enic, unsigned int rq)
{
return rq;
diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index a00565a..be17707 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -247,15 +247,23 @@ void enic_init_vnic_resources(struct enic *enic)
unsigned int error_interrupt_offset = 0;
unsigned int index = 0;
unsigned int cq_idx;
+ struct vnic_rq *data_rq;
vnic_dev_stats_clear(enic->vdev);
for (index = 0; index < enic->rq_count; index++) {
- vnic_rq_init(&enic->rq[index],
+ vnic_rq_init(&enic->rq[enic_sop_rq(enic, index)],
enic_cq_rq(enic, index),
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),
+ error_interrupt_enable,
+ error_interrupt_offset);
+
cq_idx = enic_cq_rq(enic, index);
vnic_cq_init(&enic->cq[cq_idx],
0 /* flow_control_enable */,
@@ -305,6 +313,9 @@ enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
unsigned i;
dma_addr_t dma_addr;
+ if (!rq->in_use)
+ return 0;
+
dev_debug(enic, "queue %u, allocating %u rx queue mbufs\n", rq->index,
rq->ring.desc_count);
@@ -316,20 +327,20 @@ enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
return -ENOMEM;
}
- dma_addr = (dma_addr_t)(mb->buf_physaddr
- + RTE_PKTMBUF_HEADROOM);
-
- rq_enet_desc_enc(rqd, dma_addr, RQ_ENET_TYPE_ONLY_SOP,
- mb->buf_len - RTE_PKTMBUF_HEADROOM);
+ dma_addr = (dma_addr_t)(mb->buf_physaddr + RTE_PKTMBUF_HEADROOM);
+ rq_enet_desc_enc(rqd, dma_addr,
+ (rq->is_sop ? RQ_ENET_TYPE_ONLY_SOP
+ : RQ_ENET_TYPE_NOT_SOP),
+ mb->buf_len - RTE_PKTMBUF_HEADROOM);
rq->mbuf_ring[i] = mb;
}
/* make sure all prior writes are complete before doing the PIO write */
rte_rmb();
- /* Post all but the last 2 cache lines' worth of descriptors */
- rq->posted_index = rq->ring.desc_count - (2 * RTE_CACHE_LINE_SIZE
- / sizeof(struct rq_enet_desc));
+ /* Post all but the last buffer to VIC. */
+ rq->posted_index = rq->ring.desc_count - 1;
+
rq->rx_nb_hold = 0;
dev_debug(enic, "port=%u, qidx=%u, Write %u posted idx, %u sw held\n",
@@ -337,6 +348,8 @@ enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
iowrite32(rq->posted_index, &rq->ctrl->posted_index);
rte_rmb();
+// printf("posted %d buffers to %s rq\n", rq->ring.desc_count,
+// rq->is_sop ? "sop" : "data");
return 0;
}
@@ -398,17 +411,25 @@ int enic_enable(struct enic *enic)
"Flow director feature will not work\n");
for (index = 0; index < enic->rq_count; index++) {
- err = enic_alloc_rx_queue_mbufs(enic, &enic->rq[index]);
+ err = enic_alloc_rx_queue_mbufs(enic, &enic->rq[enic_sop_rq(enic, index)]);
if (err) {
- dev_err(enic, "Failed to alloc RX queue mbufs\n");
+ dev_err(enic, "Failed to alloc sop RX queue mbufs\n");
+ return err;
+ }
+ err = enic_alloc_rx_queue_mbufs(enic, &enic->rq[enic_data_rq(enic, index)]);
+ if (err) {
+ /* release the previously allocated mbufs for the sop rq */
+ enic_rxmbuf_queue_release(enic, &enic->rq[enic_sop_rq(enic, index)]);
+
+ dev_err(enic, "Failed to alloc data RX queue mbufs\n");
return err;
}
}
for (index = 0; index < enic->wq_count; index++)
- vnic_wq_enable(&enic->wq[index]);
+ enic_start_wq(enic, index);
for (index = 0; index < enic->rq_count; index++)
- vnic_rq_enable(&enic->rq[index]);
+ enic_start_rq(enic, index);
vnic_dev_enable_wait(enic->vdev);
@@ -440,14 +461,26 @@ int enic_alloc_intr_resources(struct enic *enic)
void enic_free_rq(void *rxq)
{
- struct vnic_rq *rq = (struct vnic_rq *)rxq;
- struct enic *enic = vnic_dev_priv(rq->vdev);
+ struct vnic_rq *rq_sop = (struct vnic_rq *)rxq;
+ struct enic *enic = vnic_dev_priv(rq_sop->vdev);
+ struct vnic_rq *rq_data = &enic->rq[rq_sop->data_queue_idx];
- enic_rxmbuf_queue_release(enic, rq);
- rte_free(rq->mbuf_ring);
- rq->mbuf_ring = NULL;
- vnic_rq_free(rq);
- vnic_cq_free(&enic->cq[rq->index]);
+ enic_rxmbuf_queue_release(enic, rq_sop);
+ if (rq_data->in_use)
+ enic_rxmbuf_queue_release(enic, rq_data);
+
+ rte_free(rq_sop->mbuf_ring);
+ if (rq_data->in_use)
+ rte_free(rq_data->mbuf_ring);
+
+ rq_sop->mbuf_ring = NULL;
+ rq_data->mbuf_ring = NULL;
+
+ vnic_rq_free(rq_sop);
+ if (rq_data->in_use)
+ vnic_rq_free(rq_data);
+
+ vnic_cq_free(&enic->cq[rq_sop->index]);
}
void enic_start_wq(struct enic *enic, uint16_t queue_idx)
@@ -462,12 +495,32 @@ int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
void enic_start_rq(struct enic *enic, uint16_t queue_idx)
{
- vnic_rq_enable(&enic->rq[queue_idx]);
+ struct vnic_rq *rq_sop = &enic->rq[enic_sop_rq(enic, queue_idx)];
+ struct vnic_rq *rq_data = &enic->rq[rq_sop->data_queue_idx];
+
+ if (rq_data->in_use)
+ vnic_rq_enable(rq_data);
+ rte_mb();
+ vnic_rq_enable(rq_sop);
+
}
int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
{
- return vnic_rq_disable(&enic->rq[queue_idx]);
+ int ret1 = 0, ret2 = 0;
+
+ struct vnic_rq *rq_sop = &enic->rq[enic_sop_rq(enic, queue_idx)];
+ struct vnic_rq *rq_data = &enic->rq[rq_sop->data_queue_idx];
+
+ ret2 = vnic_rq_disable(rq_sop);
+ rte_mb();
+ if (rq_data->in_use)
+ ret1 = vnic_rq_disable(rq_data);
+
+ if (ret2)
+ return ret2;
+ else
+ return ret1;
}
int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
@@ -475,53 +528,128 @@ int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
uint16_t nb_desc)
{
int rc;
- struct vnic_rq *rq = &enic->rq[queue_idx];
-
- rq->socket_id = socket_id;
- rq->mp = mp;
+ uint16_t sop_queue_idx = enic_sop_rq(enic, queue_idx);
+ uint16_t data_queue_idx = enic_data_rq(enic, queue_idx);
+ struct vnic_rq *rq_sop = &enic->rq[sop_queue_idx];
+ struct vnic_rq *rq_data = &enic->rq[data_queue_idx];
+ unsigned int mbuf_size, mbufs_per_pkt;
+ unsigned int nb_sop_desc, nb_data_desc;
+ uint16_t min_sop, max_sop, min_data, max_data;
+
+ rq_sop->is_sop = 1;
+ rq_sop->data_queue_idx = data_queue_idx;
+ rq_data->is_sop = 0;
+ rq_data->data_queue_idx = 0;
+ rq_sop->socket_id = socket_id;
+ rq_sop->mp = mp;
+ rq_data->socket_id = socket_id;
+ rq_data->mp = mp;
+ rq_sop->in_use = 1;
+
+ mbuf_size = (uint16_t)(rte_pktmbuf_data_room_size(mp) - RTE_PKTMBUF_HEADROOM);
+
+ /* ceil(mtu/mbuf_size) */
+ mbufs_per_pkt = (enic->config.mtu + (mbuf_size - 1)) / mbuf_size;
+
+ if (mbufs_per_pkt > 1)
+ rq_data->in_use = 1;
+ else
+ rq_data->in_use = 0;
+
+ /* number of descriptors have to be a multiple of 32 */
+ nb_sop_desc = (nb_desc / mbufs_per_pkt) & ~0x1F;
+ nb_data_desc = (nb_desc - nb_sop_desc) & ~0x1F;
+
+ rq_sop->max_mbufs_per_pkt = mbufs_per_pkt;
+ rq_data->max_mbufs_per_pkt = mbufs_per_pkt;
+
+ //printf("mtu = %u, mbuf_size = %u, mbuf_per_pkt = %u\n",
+ // enic->config.mtu, mbuf_size, mbufs_per_pkt);
+
+ if (mbufs_per_pkt > 1) {
+ min_sop = 64;
+ max_sop = ((enic->config.rq_desc_count / (mbufs_per_pkt - 1)) & ~0x1F);
+ min_data = min_sop * (mbufs_per_pkt - 1);
+ max_data = enic->config.rq_desc_count;
+ } else {
+ min_sop = 64;
+ max_sop = enic->config.rq_desc_count;
+ min_data = 0;
+ max_data = 0;
+ }
- if (nb_desc) {
- if (nb_desc > enic->config.rq_desc_count) {
- dev_warning(enic,
- "RQ %d - number of rx desc in cmd line (%d)"\
- "is greater than that in the UCSM/CIMC adapter"\
- "policy. Applying the value in the adapter "\
- "policy (%d).\n",
- queue_idx, nb_desc, enic->config.rq_desc_count);
- nb_desc = enic->config.rq_desc_count;
- }
- dev_info(enic, "RX Queues - effective number of descs:%d\n",
- nb_desc);
+ if (nb_desc < (min_sop + min_data)) {
+ dev_warning(enic,
+ "Number of rx descs too low, adjusting to minimum\n");
+ nb_sop_desc = min_sop;
+ nb_data_desc = min_data;
+ } else if (nb_desc > (max_sop + max_data)){
+ dev_warning(enic,
+ "Number of rx_descs too high, adjusting to maximum\n");
+ nb_sop_desc = max_sop;
+ nb_data_desc = max_data;
}
+ dev_info(enic, "For mtu %d and mbuf size %d valid rx descriptor range is %d to %d\n",
+ enic->config.mtu, mbuf_size, min_sop + min_data, max_sop + max_data);
- /* Allocate queue resources */
- rc = vnic_rq_alloc(enic->vdev, rq, queue_idx,
- nb_desc, sizeof(struct rq_enet_desc));
+ dev_info(enic, "Using %d rx descriptors (sop %d, data %d)\n",
+ nb_sop_desc + nb_data_desc, nb_sop_desc, nb_data_desc);
+
+ /* Allocate sop queue resources */
+ rc = vnic_rq_alloc(enic->vdev, rq_sop, sop_queue_idx,
+ nb_sop_desc, sizeof(struct rq_enet_desc));
if (rc) {
- dev_err(enic, "error in allocation of rq\n");
+ dev_err(enic, "error in allocation of sop rq\n");
goto err_exit;
}
-
+ nb_sop_desc = rq_sop->ring.desc_count;
+
+ if (rq_data->in_use) {
+ /* Allocate data queue resources */
+ rc = vnic_rq_alloc(enic->vdev, rq_data, data_queue_idx,
+ nb_data_desc,
+ sizeof(struct rq_enet_desc));
+ if (rc) {
+ dev_err(enic, "error in allocation of data rq\n");
+ goto err_free_rq_sop;
+ }
+ nb_data_desc = rq_data->ring.desc_count;
+ }
rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
- socket_id, nb_desc,
- sizeof(struct cq_enet_rq_desc));
+ socket_id, nb_sop_desc + nb_data_desc,
+ sizeof(struct cq_enet_rq_desc));
if (rc) {
dev_err(enic, "error in allocation of cq for rq\n");
- goto err_free_rq_exit;
+ goto err_free_rq_data;
}
- /* Allocate the mbuf ring */
- rq->mbuf_ring = (struct rte_mbuf **)rte_zmalloc_socket("rq->mbuf_ring",
- sizeof(struct rte_mbuf *) * nb_desc,
- RTE_CACHE_LINE_SIZE, rq->socket_id);
+ /* Allocate the mbuf rings */
+ rq_sop->mbuf_ring = (struct rte_mbuf **)rte_zmalloc_socket("rq->mbuf_ring",
+ sizeof(struct rte_mbuf *) * nb_sop_desc,
+ RTE_CACHE_LINE_SIZE, rq_sop->socket_id);
+ if (rq_sop->mbuf_ring == NULL)
+ goto err_free_cq;
+
+ if (rq_data->in_use) {
+ rq_data->mbuf_ring = (struct rte_mbuf **)rte_zmalloc_socket("rq->mbuf_ring",
+ sizeof(struct rte_mbuf *) * nb_data_desc,
+ RTE_CACHE_LINE_SIZE, rq_sop->socket_id);
+ if (rq_data->mbuf_ring == NULL)
+ goto err_free_sop_mbuf;
+ }
- if (rq->mbuf_ring != NULL)
- return 0;
+ return 0;
+err_free_sop_mbuf:
+ rte_free(rq_sop->mbuf_ring);
+err_free_cq:
/* cleanup on error */
vnic_cq_free(&enic->cq[queue_idx]);
-err_free_rq_exit:
- vnic_rq_free(rq);
+err_free_rq_data:
+ if (rq_data->in_use)
+ vnic_rq_free(rq_data);
+err_free_rq_sop:
+ vnic_rq_free(rq_sop);
err_exit:
return -ENOMEM;
}
diff --git a/drivers/net/enic/enic_rxtx.c b/drivers/net/enic/enic_rxtx.c
index 174486b..463b954 100644
--- a/drivers/net/enic/enic_rxtx.c
+++ b/drivers/net/enic/enic_rxtx.c
@@ -242,22 +242,27 @@ uint16_t
enic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts)
{
- struct vnic_rq *rq = rx_queue;
- struct enic *enic = vnic_dev_priv(rq->vdev);
- unsigned int rx_id;
+ struct vnic_rq *sop_rq = rx_queue;
+ struct vnic_rq *data_rq;
+ struct vnic_rq *rq;
+ struct enic *enic = vnic_dev_priv(sop_rq->vdev);
+ uint16_t cq_idx;
+ uint16_t rq_idx;
+ uint16_t rq_num;
struct rte_mbuf *nmb, *rxmb;
uint16_t nb_rx = 0;
- uint16_t nb_hold;
struct vnic_cq *cq;
volatile struct cq_desc *cqd_ptr;
uint8_t color;
- uint16_t nb_err = 0;
+ uint16_t seg_length;
+ struct rte_mbuf *first_seg = sop_rq->pkt_first_seg;
+ struct rte_mbuf *last_seg = sop_rq->pkt_last_seg;
- cq = &enic->cq[enic_cq_rq(enic, rq->index)];
- rx_id = cq->to_clean; /* index of cqd, rqd, mbuf_table */
- cqd_ptr = (struct cq_desc *)(cq->ring.descs) + rx_id;
+ cq = &enic->cq[enic_cq_rq(enic, sop_rq->index)];
+ cq_idx = cq->to_clean; /* index of cqd, rqd, mbuf_table */
+ cqd_ptr = (struct cq_desc *)(cq->ring.descs) + cq_idx;
- nb_hold = rq->rx_nb_hold; /* mbufs held by software */
+ data_rq = &enic->rq[sop_rq->data_queue_idx];
while (nb_rx < nb_pkts) {
volatile struct rq_enet_desc *rqd_ptr;
@@ -265,6 +270,7 @@ enic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
struct cq_desc cqd;
uint64_t ol_err_flags;
uint8_t packet_error;
+ uint16_t ciflags;
/* Check for pkts available */
color = (cqd_ptr->type_color >> CQ_DESC_COLOR_SHIFT)
@@ -272,9 +278,13 @@ enic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
if (color == cq->last_color)
break;
- /* Get the cq descriptor and rq pointer */
+ /* Get the cq descriptor and extract rq info from it */
cqd = *cqd_ptr;
- rqd_ptr = (struct rq_enet_desc *)(rq->ring.descs) + rx_id;
+ rq_num = cqd.q_number & CQ_DESC_Q_NUM_MASK;
+ rq_idx = cqd.completed_index & CQ_DESC_COMP_NDX_MASK;
+
+ rq = &enic->rq[rq_num];
+ rqd_ptr = ((struct rq_enet_desc *)rq->ring.descs) + rq_idx;
/* allocate a new mbuf */
nmb = rte_rxmbuf_alloc(rq->mp);
@@ -287,67 +297,106 @@ enic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
packet_error = enic_cq_rx_to_pkt_err_flags(&cqd, &ol_err_flags);
/* Get the mbuf to return and replace with one just allocated */
- rxmb = rq->mbuf_ring[rx_id];
- rq->mbuf_ring[rx_id] = nmb;
+ rxmb = rq->mbuf_ring[rq_idx];
+ rq->mbuf_ring[rq_idx] = nmb;
/* Increment cqd, rqd, mbuf_table index */
- rx_id++;
- if (unlikely(rx_id == rq->ring.desc_count)) {
- rx_id = 0;
+ cq_idx++;
+ if (unlikely(cq_idx == cq->ring.desc_count)) {
+ cq_idx = 0;
cq->last_color = cq->last_color ? 0 : 1;
}
/* Prefetch next mbuf & desc while processing current one */
- cqd_ptr = (struct cq_desc *)(cq->ring.descs) + rx_id;
+ cqd_ptr = (struct cq_desc *)(cq->ring.descs) + cq_idx;
rte_enic_prefetch(cqd_ptr);
- rte_enic_prefetch(rq->mbuf_ring[rx_id]);
- rte_enic_prefetch((struct rq_enet_desc *)(rq->ring.descs)
- + rx_id);
+// rte_enic_prefetch(rq->mbuf_ring[rx_id]);
+// rte_enic_prefetch((struct rq_enet_desc *)(rq->ring.descs)
+// + rx_id);
+
+ ciflags = enic_cq_rx_desc_ciflags((struct cq_enet_rq_desc *) &cqd);
/* Push descriptor for newly allocated mbuf */
- dma_addr = (dma_addr_t)(nmb->buf_physaddr
- + RTE_PKTMBUF_HEADROOM);
- rqd_ptr->address = rte_cpu_to_le_64(dma_addr);
- rqd_ptr->length_type = cpu_to_le16(nmb->buf_len
- - RTE_PKTMBUF_HEADROOM);
+
+ dma_addr = (dma_addr_t)(nmb->buf_physaddr + RTE_PKTMBUF_HEADROOM);
+ rq_enet_desc_enc(rqd_ptr, dma_addr,
+ (rq->is_sop ? RQ_ENET_TYPE_ONLY_SOP
+ : RQ_ENET_TYPE_NOT_SOP),
+ nmb->buf_len - RTE_PKTMBUF_HEADROOM);
/* Fill in the rest of the mbuf */
- rxmb->data_off = RTE_PKTMBUF_HEADROOM;
- rxmb->nb_segs = 1;
+ seg_length = enic_cq_rx_desc_n_bytes(&cqd);
+ rxmb->packet_type = enic_cq_rx_flags_to_pkt_type(&cqd);
+ enic_cq_rx_to_pkt_flags(&cqd, rxmb);
+ if (rq->is_sop) {
+ first_seg = rxmb;
+ first_seg->nb_segs = 1;
+ first_seg->pkt_len = seg_length;
+ } else {
+ first_seg->pkt_len = (uint16_t)(first_seg->pkt_len
+ + seg_length);
+ first_seg->nb_segs++;
+ last_seg->next = rxmb;
+ }
+
rxmb->next = NULL;
rxmb->port = enic->port_id;
- if (!packet_error) {
- rxmb->pkt_len = enic_cq_rx_desc_n_bytes(&cqd);
- rxmb->packet_type = enic_cq_rx_flags_to_pkt_type(&cqd);
- enic_cq_rx_to_pkt_flags(&cqd, rxmb);
- } else {
- rte_pktmbuf_free(rxmb);
+ rxmb->data_len = seg_length;
+
+ rq->rx_nb_hold++;
+
+ if (!(enic_cq_rx_desc_eop(ciflags))) {
+ last_seg = rxmb;
+ continue;
+ }
+
+ if (unlikely(packet_error)) {
+ rte_pktmbuf_free(first_seg);
rte_atomic64_inc(&enic->soft_stats.rx_packet_errors);
- nb_err++;
+
continue;
}
- rxmb->data_len = rxmb->pkt_len;
+
+
+// printf("EOP: final packet length is %d\n", first_seg->pkt_len);
+// rte_pktmbuf_dump(stdout, first_seg, 64);
/* prefetch mbuf data for caller */
- rte_packet_prefetch(RTE_PTR_ADD(rxmb->buf_addr,
+ rte_packet_prefetch(RTE_PTR_ADD(first_seg->buf_addr,
RTE_PKTMBUF_HEADROOM));
/* store the mbuf address into the next entry of the array */
- rx_pkts[nb_rx++] = rxmb;
+ rx_pkts[nb_rx++] = first_seg;
}
- nb_hold += nb_rx + nb_err;
- cq->to_clean = rx_id;
+ sop_rq->pkt_first_seg = first_seg;
+ sop_rq->pkt_last_seg = last_seg;
+
+ cq->to_clean = cq_idx;
+
+ if ((sop_rq->rx_nb_hold + data_rq->rx_nb_hold) > sop_rq->rx_free_thresh) {
+ if (data_rq->in_use) {
+ data_rq->posted_index = enic_ring_add(data_rq->ring.desc_count,
+ data_rq->posted_index,
+ data_rq->rx_nb_hold);
+ //printf("Processed %d data descs. Posted index now %d\n",
+ // data_rq->rx_nb_hold, data_rq->posted_index);
+ data_rq->rx_nb_hold = 0;
+ }
+ sop_rq->posted_index = enic_ring_add(sop_rq->ring.desc_count,
+ sop_rq->posted_index,
+ sop_rq->rx_nb_hold);
+ //printf("Processed %d sop descs. Posted index now %d\n",
+ // sop_rq->rx_nb_hold, sop_rq->posted_index);
+ sop_rq->rx_nb_hold = 0;
- if (nb_hold > rq->rx_free_thresh) {
- rq->posted_index = enic_ring_add(rq->ring.desc_count,
- rq->posted_index, nb_hold);
- nb_hold = 0;
rte_mb();
- iowrite32(rq->posted_index, &rq->ctrl->posted_index);
+ if (data_rq->in_use)
+ iowrite32(data_rq->posted_index, &data_rq->ctrl->posted_index);
+ rte_compiler_barrier();
+ iowrite32(sop_rq->posted_index, &sop_rq->ctrl->posted_index);
}
- rq->rx_nb_hold = nb_hold;
return nb_rx;
}
--
2.7.4