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Message-ID: <20170608161323.7597-3-Yuval.Mintz@cavium.com>
Date: Thu, 8 Jun 2017 19:13:17 +0300
From: Yuval Mintz <Yuval.Mintz@...ium.com>
To: <netdev@...r.kernel.org>, <davem@...emloft.net>
CC: <linux-rdma@...r.kernel.org>, <Michal.Kalderon@...ium.com>,
Yuval Mintz <Yuval.Mintz@...ium.com>
Subject: [PATCH net-next 2/8] qed: Revise ll2 Rx completion
This introduces qed_ll2_comp_rx_data as a public struct
and moves handling of Rx packets in LL2 into using it.
Signed-off-by: Yuval Mintz <Yuval.Mintz@...ium.com>
---
drivers/net/ethernet/qlogic/qed/qed_ll2.c | 84 ++++++++++++++++++-------------
include/linux/qed/qed_ll2_if.h | 25 +++++++++
2 files changed, 75 insertions(+), 34 deletions(-)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index 0b75f5d..46b71a6 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -165,41 +165,33 @@ static void qed_ll2_kill_buffers(struct qed_dev *cdev)
}
static void qed_ll2b_complete_rx_packet(struct qed_hwfn *p_hwfn,
- u8 connection_handle,
- struct qed_ll2_rx_packet *p_pkt,
- struct core_rx_fast_path_cqe *p_cqe,
- bool b_last_packet)
+ struct qed_ll2_comp_rx_data *data)
{
- u16 packet_length = le16_to_cpu(p_cqe->packet_length);
- struct qed_ll2_buffer *buffer = p_pkt->cookie;
+ struct qed_ll2_buffer *buffer = data->cookie;
struct qed_dev *cdev = p_hwfn->cdev;
- u16 vlan = le16_to_cpu(p_cqe->vlan);
- u32 opaque_data_0, opaque_data_1;
- u8 pad = p_cqe->placement_offset;
dma_addr_t new_phys_addr;
struct sk_buff *skb;
bool reuse = false;
int rc = -EINVAL;
u8 *new_data;
- opaque_data_0 = le32_to_cpu(p_cqe->opaque_data.data[0]);
- opaque_data_1 = le32_to_cpu(p_cqe->opaque_data.data[1]);
-
DP_VERBOSE(p_hwfn,
(NETIF_MSG_RX_STATUS | QED_MSG_STORAGE | NETIF_MSG_PKTDATA),
"Got an LL2 Rx completion: [Buffer at phys 0x%llx, offset 0x%02x] Length 0x%04x Parse_flags 0x%04x vlan 0x%04x Opaque data [0x%08x:0x%08x]\n",
- (u64)p_pkt->rx_buf_addr, pad, packet_length,
- le16_to_cpu(p_cqe->parse_flags.flags), vlan,
- opaque_data_0, opaque_data_1);
+ (u64)data->rx_buf_addr,
+ data->u.placement_offset,
+ data->length.packet_length,
+ data->parse_flags,
+ data->vlan, data->opaque_data_0, data->opaque_data_1);
if ((cdev->dp_module & NETIF_MSG_PKTDATA) && buffer->data) {
print_hex_dump(KERN_INFO, "",
DUMP_PREFIX_OFFSET, 16, 1,
- buffer->data, packet_length, false);
+ buffer->data, data->length.packet_length, false);
}
/* Determine if data is valid */
- if (packet_length < ETH_HLEN)
+ if (data->length.packet_length < ETH_HLEN)
reuse = true;
/* Allocate a replacement for buffer; Reuse upon failure */
@@ -219,9 +211,9 @@ static void qed_ll2b_complete_rx_packet(struct qed_hwfn *p_hwfn,
goto out_post;
}
- pad += NET_SKB_PAD;
- skb_reserve(skb, pad);
- skb_put(skb, packet_length);
+ data->u.placement_offset += NET_SKB_PAD;
+ skb_reserve(skb, data->u.placement_offset);
+ skb_put(skb, data->length.packet_length);
skb_checksum_none_assert(skb);
/* Get parital ethernet information instead of eth_type_trans(),
@@ -232,10 +224,12 @@ static void qed_ll2b_complete_rx_packet(struct qed_hwfn *p_hwfn,
/* Pass SKB onward */
if (cdev->ll2->cbs && cdev->ll2->cbs->rx_cb) {
- if (vlan)
- __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan);
+ if (data->vlan)
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
+ data->vlan);
cdev->ll2->cbs->rx_cb(cdev->ll2->cb_cookie, skb,
- opaque_data_0, opaque_data_1);
+ data->opaque_data_0,
+ data->opaque_data_1);
}
/* Update Buffer information and update FW producer */
@@ -472,33 +466,55 @@ qed_ll2_rxq_completion_gsi(struct qed_hwfn *p_hwfn,
return 0;
}
-static int qed_ll2_rxq_completion_reg(struct qed_hwfn *p_hwfn,
- struct qed_ll2_info *p_ll2_conn,
- union core_rx_cqe_union *p_cqe,
- unsigned long *p_lock_flags,
- bool b_last_cqe)
+static void qed_ll2_rxq_parse_reg(struct qed_hwfn *p_hwfn,
+ union core_rx_cqe_union *p_cqe,
+ struct qed_ll2_comp_rx_data *data)
+{
+ data->parse_flags = le16_to_cpu(p_cqe->rx_cqe_fp.parse_flags.flags);
+ data->length.packet_length =
+ le16_to_cpu(p_cqe->rx_cqe_fp.packet_length);
+ data->vlan = le16_to_cpu(p_cqe->rx_cqe_fp.vlan);
+ data->opaque_data_0 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[0]);
+ data->opaque_data_1 = le32_to_cpu(p_cqe->rx_cqe_fp.opaque_data.data[1]);
+ data->u.placement_offset = p_cqe->rx_cqe_fp.placement_offset;
+}
+
+static int
+qed_ll2_rxq_handle_completion(struct qed_hwfn *p_hwfn,
+ struct qed_ll2_info *p_ll2_conn,
+ union core_rx_cqe_union *p_cqe,
+ unsigned long *p_lock_flags, bool b_last_cqe)
{
struct qed_ll2_rx_queue *p_rx = &p_ll2_conn->rx_queue;
struct qed_ll2_rx_packet *p_pkt = NULL;
+ struct qed_ll2_comp_rx_data data;
if (!list_empty(&p_rx->active_descq))
p_pkt = list_first_entry(&p_rx->active_descq,
struct qed_ll2_rx_packet, list_entry);
if (!p_pkt) {
DP_NOTICE(p_hwfn,
- "LL2 Rx completion but active_descq is empty\n");
+ "[%d] LL2 Rx completion but active_descq is empty\n",
+ p_ll2_conn->conn.conn_type);
+
return -EIO;
}
list_del(&p_pkt->list_entry);
+ qed_ll2_rxq_parse_reg(p_hwfn, p_cqe, &data);
if (qed_chain_consume(&p_rx->rxq_chain) != p_pkt->rxq_bd)
DP_NOTICE(p_hwfn,
"Mismatch between active_descq and the LL2 Rx chain\n");
+
list_add_tail(&p_pkt->list_entry, &p_rx->free_descq);
+ data.connection_handle = p_ll2_conn->my_id;
+ data.cookie = p_pkt->cookie;
+ data.rx_buf_addr = p_pkt->rx_buf_addr;
+ data.b_last_packet = b_last_cqe;
+
spin_unlock_irqrestore(&p_rx->lock, *p_lock_flags);
- qed_ll2b_complete_rx_packet(p_hwfn, p_ll2_conn->my_id,
- p_pkt, &p_cqe->rx_cqe_fp, b_last_cqe);
+ qed_ll2b_complete_rx_packet(p_hwfn, &data);
spin_lock_irqsave(&p_rx->lock, *p_lock_flags);
return 0;
@@ -538,9 +554,9 @@ static int qed_ll2_rxq_completion(struct qed_hwfn *p_hwfn, void *cookie)
cqe, flags, b_last_cqe);
break;
case CORE_RX_CQE_TYPE_REGULAR:
- rc = qed_ll2_rxq_completion_reg(p_hwfn, p_ll2_conn,
- cqe, &flags,
- b_last_cqe);
+ rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn,
+ cqe, &flags,
+ b_last_cqe);
break;
default:
rc = -EIO;
diff --git a/include/linux/qed/qed_ll2_if.h b/include/linux/qed/qed_ll2_if.h
index 1a9a5b9..5145278 100644
--- a/include/linux/qed/qed_ll2_if.h
+++ b/include/linux/qed/qed_ll2_if.h
@@ -79,6 +79,31 @@ struct qed_ll2_stats {
u64 sent_bcast_pkts;
};
+struct qed_ll2_comp_rx_data {
+ u8 connection_handle;
+ void *cookie;
+ dma_addr_t rx_buf_addr;
+ u16 parse_flags;
+ u16 vlan;
+ bool b_last_packet;
+
+ union {
+ u8 placement_offset;
+ u8 data_length_error;
+ } u;
+ union {
+ u16 packet_length;
+ u16 data_length;
+ } length;
+
+ u32 opaque_data_0;
+ u32 opaque_data_1;
+
+ /* GSI only */
+ u32 gid_dst[4];
+ u16 qp_id;
+};
+
struct qed_ll2_tx_pkt_info {
u8 num_of_bds;
u16 vlan;
--
2.9.4
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