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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@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mintz, Yuval 2017-06-09 17:13:19 +03:00 committed by David S. Miller
parent 7c7973b2ae
commit 68be910cd2
2 changed files with 76 additions and 34 deletions
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76
drivers/net/ethernet/qlogic/qed/qed_ll2.c
View File

@ -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,
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)
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;
@ -538,7 +554,7 @@ 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,
rc = qed_ll2_rxq_handle_completion(p_hwfn, p_ll2_conn,
cqe, &flags,
b_last_cqe);
break;

26
include/linux/qed/qed_ll2_if.h
View File

@ -79,6 +79,32 @@ struct qed_ll2_stats {
u64 sent_bcast_pkts;
};
struct qed_ll2_comp_rx_data {
void *cookie;
dma_addr_t rx_buf_addr;
u16 parse_flags;
u16 vlan;
bool b_last_packet;
u8 connection_handle;
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;
union {
u8 placement_offset;
u8 data_length_error;
} u;
};
struct qed_ll2_tx_pkt_info {
void *cookie;
dma_addr_t first_frag;