qed: Add RoCE ll2 & GSI support
Add the RoCE-specific LL2 logic [as well as GSI support] over
the 'generic' LL2 interface.
Signed-off-by: Ram Amrani <Ram.Amrani@caviumnetworks.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index e0ec8ed..a6db107 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -278,6 +278,7 @@
struct qed_ll2_tx_packet *p_pkt = NULL;
struct qed_ll2_info *p_ll2_conn;
struct qed_ll2_tx_queue *p_tx;
+ dma_addr_t tx_frag;
p_ll2_conn = qed_ll2_handle_sanity_inactive(p_hwfn, connection_handle);
if (!p_ll2_conn)
@@ -297,11 +298,22 @@
p_tx->cur_completing_packet = *p_pkt;
p_tx->cur_completing_bd_idx = 1;
b_last_frag = p_tx->cur_completing_bd_idx == p_pkt->bd_used;
+ tx_frag = p_pkt->bds_set[0].tx_frag;
+ if (p_ll2_conn->gsi_enable)
+ qed_ll2b_release_tx_gsi_packet(p_hwfn,
+ p_ll2_conn->my_id,
+ p_pkt->cookie,
+ tx_frag,
+ b_last_frag,
+ b_last_packet);
+ else
+ qed_ll2b_complete_tx_packet(p_hwfn,
+ p_ll2_conn->my_id,
+ p_pkt->cookie,
+ tx_frag,
+ b_last_frag,
+ b_last_packet);
- qed_ll2b_complete_tx_packet(p_hwfn, p_ll2_conn->my_id,
- p_pkt->cookie,
- p_pkt->bds_set[0].tx_frag,
- b_last_frag, b_last_packet);
}
}
@@ -313,6 +325,7 @@
struct qed_ll2_tx_packet *p_pkt;
bool b_last_frag = false;
unsigned long flags;
+ dma_addr_t tx_frag;
int rc = -EINVAL;
spin_lock_irqsave(&p_tx->lock, flags);
@@ -353,11 +366,19 @@
list_add_tail(&p_pkt->list_entry, &p_tx->free_descq);
spin_unlock_irqrestore(&p_tx->lock, flags);
- qed_ll2b_complete_tx_packet(p_hwfn,
- p_ll2_conn->my_id,
- p_pkt->cookie,
- p_pkt->bds_set[0].tx_frag,
- b_last_frag, !num_bds);
+ tx_frag = p_pkt->bds_set[0].tx_frag;
+ if (p_ll2_conn->gsi_enable)
+ qed_ll2b_complete_tx_gsi_packet(p_hwfn,
+ p_ll2_conn->my_id,
+ p_pkt->cookie,
+ tx_frag,
+ b_last_frag, !num_bds);
+ else
+ qed_ll2b_complete_tx_packet(p_hwfn,
+ p_ll2_conn->my_id,
+ p_pkt->cookie,
+ tx_frag,
+ b_last_frag, !num_bds);
spin_lock_irqsave(&p_tx->lock, flags);
}
@@ -368,6 +389,54 @@
return rc;
}
+static int
+qed_ll2_rxq_completion_gsi(struct qed_hwfn *p_hwfn,
+ struct qed_ll2_info *p_ll2_info,
+ union core_rx_cqe_union *p_cqe,
+ unsigned long lock_flags, bool b_last_cqe)
+{
+ struct qed_ll2_rx_queue *p_rx = &p_ll2_info->rx_queue;
+ struct qed_ll2_rx_packet *p_pkt = NULL;
+ u16 packet_length, parse_flags, vlan;
+ u32 src_mac_addrhi;
+ u16 src_mac_addrlo;
+
+ 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,
+ "GSI Rx completion but active_descq is empty\n");
+ return -EIO;
+ }
+
+ list_del(&p_pkt->list_entry);
+ parse_flags = le16_to_cpu(p_cqe->rx_cqe_gsi.parse_flags.flags);
+ packet_length = le16_to_cpu(p_cqe->rx_cqe_gsi.data_length);
+ vlan = le16_to_cpu(p_cqe->rx_cqe_gsi.vlan);
+ src_mac_addrhi = le32_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrhi);
+ src_mac_addrlo = le16_to_cpu(p_cqe->rx_cqe_gsi.src_mac_addrlo);
+ 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);
+
+ spin_unlock_irqrestore(&p_rx->lock, lock_flags);
+ qed_ll2b_complete_rx_gsi_packet(p_hwfn,
+ p_ll2_info->my_id,
+ p_pkt->cookie,
+ p_pkt->rx_buf_addr,
+ packet_length,
+ p_cqe->rx_cqe_gsi.data_length_error,
+ parse_flags,
+ vlan,
+ src_mac_addrhi,
+ src_mac_addrlo, b_last_cqe);
+ spin_lock_irqsave(&p_rx->lock, lock_flags);
+
+ 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,
@@ -429,6 +498,10 @@
DP_NOTICE(p_hwfn, "LL2 - unexpected Rx CQE slowpath\n");
rc = -EINVAL;
break;
+ case CORE_RX_CQE_TYPE_GSI_OFFLOAD:
+ rc = qed_ll2_rxq_completion_gsi(p_hwfn, p_ll2_conn,
+ 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);
@@ -527,6 +600,7 @@
}
p_ramrod->action_on_error.error_type = action_on_error;
+ p_ramrod->gsi_offload_flag = p_ll2_conn->gsi_enable;
return qed_spq_post(p_hwfn, p_ent, NULL);
}
@@ -589,6 +663,7 @@
DP_NOTICE(p_hwfn, "Unknown connection type: %d\n", conn_type);
}
+ p_ramrod->gsi_offload_flag = p_ll2_conn->gsi_enable;
return qed_spq_post(p_hwfn, p_ent, NULL);
}
@@ -775,6 +850,7 @@
p_ll2_info->tx_dest = p_params->tx_dest;
p_ll2_info->ai_err_packet_too_big = p_params->ai_err_packet_too_big;
p_ll2_info->ai_err_no_buf = p_params->ai_err_no_buf;
+ p_ll2_info->gsi_enable = p_params->gsi_enable;
rc = qed_ll2_acquire_connection_rx(p_hwfn, p_ll2_info, rx_num_desc);
if (rc)
@@ -1026,6 +1102,7 @@
u16 vlan,
u8 bd_flags,
u16 l4_hdr_offset_w,
+ enum core_roce_flavor_type type,
dma_addr_t first_frag,
u16 first_frag_len)
{
@@ -1046,6 +1123,9 @@
DMA_REGPAIR_LE(start_bd->addr, first_frag);
start_bd->nbytes = cpu_to_le16(first_frag_len);
+ SET_FIELD(start_bd->bd_flags.as_bitfield, CORE_TX_BD_FLAGS_ROCE_FLAV,
+ type);
+
DP_VERBOSE(p_hwfn,
(NETIF_MSG_TX_QUEUED | QED_MSG_LL2),
"LL2 [q 0x%02x cid 0x%08x type 0x%08x] Tx Producer at [0x%04x] - set with a %04x bytes %02x BDs buffer at %08x:%08x\n",
@@ -1137,11 +1217,13 @@
u16 vlan,
u8 bd_flags,
u16 l4_hdr_offset_w,
+ enum qed_ll2_roce_flavor_type qed_roce_flavor,
dma_addr_t first_frag,
u16 first_frag_len, void *cookie, u8 notify_fw)
{
struct qed_ll2_tx_packet *p_curp = NULL;
struct qed_ll2_info *p_ll2_conn = NULL;
+ enum core_roce_flavor_type roce_flavor;
struct qed_ll2_tx_queue *p_tx;
struct qed_chain *p_tx_chain;
unsigned long flags;
@@ -1174,6 +1256,15 @@
goto out;
}
+ if (qed_roce_flavor == QED_LL2_ROCE) {
+ roce_flavor = CORE_ROCE;
+ } else if (qed_roce_flavor == QED_LL2_RROCE) {
+ roce_flavor = CORE_RROCE;
+ } else {
+ rc = -EINVAL;
+ goto out;
+ }
+
/* Prepare packet and BD, and perhaps send a doorbell to FW */
qed_ll2_prepare_tx_packet_set(p_hwfn, p_tx, p_curp,
num_of_bds, first_frag,
@@ -1181,6 +1272,7 @@
qed_ll2_prepare_tx_packet_set_bd(p_hwfn, p_ll2_conn, p_curp,
num_of_bds, CORE_TX_DEST_NW,
vlan, bd_flags, l4_hdr_offset_w,
+ roce_flavor,
first_frag, first_frag_len);
qed_ll2_tx_packet_notify(p_hwfn, p_ll2_conn);
@@ -1476,6 +1568,7 @@
ll2_info.rx_vlan_removal_en = params->rx_vlan_stripping;
ll2_info.tx_tc = 0;
ll2_info.tx_dest = CORE_TX_DEST_NW;
+ ll2_info.gsi_enable = 1;
rc = qed_ll2_acquire_connection(QED_LEADING_HWFN(cdev), &ll2_info,
QED_LL2_RX_SIZE, QED_LL2_TX_SIZE,
@@ -1625,8 +1718,8 @@
rc = qed_ll2_prepare_tx_packet(QED_LEADING_HWFN(cdev),
cdev->ll2->handle,
1 + skb_shinfo(skb)->nr_frags,
- vlan, flags, 0, mapping,
- skb->len, skb, 1);
+ vlan, flags, 0, 0 /* RoCE FLAVOR */,
+ mapping, skb->len, skb, 1);
if (rc)
goto err;