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Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_iwarp.c')
-rw-r--r--drivers/net/ethernet/qlogic/qed/qed_iwarp.c1088
1 files changed, 971 insertions, 117 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
index 9d989c96278c..1d1d4caad680 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
@@ -1,34 +1,9 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
/* QLogic qed NIC Driver
* Copyright (c) 2015-2017 QLogic Corporation
- *
- * This software is available to you under a choice of one of two
- * licenses. You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * COPYING in the main directory of this source tree, or the
- * OpenIB.org BSD license below:
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the following
- * disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and /or other materials
- * provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
+ * Copyright (c) 2019-2020 Marvell International Ltd.
*/
+
#include <linux/if_ether.h>
#include <linux/if_vlan.h>
#include <linux/ip.h>
@@ -41,6 +16,7 @@
#include "qed_rdma.h"
#include "qed_reg_addr.h"
#include "qed_sp.h"
+#include "qed_ooo.h"
#define QED_IWARP_ORD_DEFAULT 32
#define QED_IWARP_IRD_DEFAULT 32
@@ -62,18 +38,29 @@ struct mpa_v2_hdr {
#define MPA_REV2(_mpa_rev) ((_mpa_rev) == MPA_NEGOTIATION_TYPE_ENHANCED)
#define QED_IWARP_INVALID_TCP_CID 0xffffffff
-#define QED_IWARP_RCV_WND_SIZE_DEF (256 * 1024)
-#define QED_IWARP_RCV_WND_SIZE_MIN (64 * 1024)
+
+#define QED_IWARP_RCV_WND_SIZE_DEF_BB_2P (200 * 1024)
+#define QED_IWARP_RCV_WND_SIZE_DEF_BB_4P (100 * 1024)
+#define QED_IWARP_RCV_WND_SIZE_DEF_AH_2P (150 * 1024)
+#define QED_IWARP_RCV_WND_SIZE_DEF_AH_4P (90 * 1024)
+
+#define QED_IWARP_RCV_WND_SIZE_MIN (0xffff)
#define TIMESTAMP_HEADER_SIZE (12)
+#define QED_IWARP_MAX_FIN_RT_DEFAULT (2)
#define QED_IWARP_TS_EN BIT(0)
#define QED_IWARP_DA_EN BIT(1)
#define QED_IWARP_PARAM_CRC_NEEDED (1)
#define QED_IWARP_PARAM_P2P (1)
-static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
- u8 fw_event_code, u16 echo,
- union event_ring_data *data,
+#define QED_IWARP_DEF_MAX_RT_TIME (0)
+#define QED_IWARP_DEF_CWND_FACTOR (4)
+#define QED_IWARP_DEF_KA_MAX_PROBE_CNT (5)
+#define QED_IWARP_DEF_KA_TIMEOUT (1200000) /* 20 min */
+#define QED_IWARP_DEF_KA_INTERVAL (1000) /* 1 sec */
+
+static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
+ __le16 echo, union event_ring_data *data,
u8 fw_return_code);
/* Override devinfo with iWARP specific values */
@@ -119,6 +106,21 @@ static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid)
spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
}
+void
+qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
+ struct iwarp_init_func_ramrod_data *p_ramrod)
+{
+ p_ramrod->iwarp.ll2_ooo_q_index =
+ RESC_START(p_hwfn, QED_LL2_RAM_QUEUE) +
+ p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle;
+
+ p_ramrod->tcp.tx_sws_timer = cpu_to_le16(QED_TX_SWS_TIMER_DFLT);
+ p_ramrod->tcp.two_msl_timer = cpu_to_le32(QED_TWO_MSL_TIMER_DFLT);
+ p_ramrod->tcp.max_fin_rt = QED_IWARP_MAX_FIN_RT_DEFAULT;
+
+ return;
+}
+
static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid)
{
int rc;
@@ -246,12 +248,14 @@ int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
SET_FIELD(p_ramrod->flags,
IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq);
- p_ramrod->pd = qp->pd;
- p_ramrod->sq_num_pages = qp->sq_num_pages;
- p_ramrod->rq_num_pages = qp->rq_num_pages;
+ p_ramrod->pd = cpu_to_le16(qp->pd);
+ p_ramrod->sq_num_pages = cpu_to_le16(qp->sq_num_pages);
+ p_ramrod->rq_num_pages = cpu_to_le16(qp->rq_num_pages);
- p_ramrod->qp_handle_for_cqe.hi = cpu_to_le32(qp->qp_handle.hi);
- p_ramrod->qp_handle_for_cqe.lo = cpu_to_le32(qp->qp_handle.lo);
+ p_ramrod->srq_id.srq_idx = cpu_to_le16(qp->srq_id);
+ p_ramrod->srq_id.opaque_fid = cpu_to_le16(p_hwfn->hw_info.opaque_fid);
+ p_ramrod->qp_handle_for_cqe.hi = qp->qp_handle.hi;
+ p_ramrod->qp_handle_for_cqe.lo = qp->qp_handle.lo;
p_ramrod->cq_cid_for_sq =
cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id);
@@ -286,6 +290,7 @@ static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
struct iwarp_modify_qp_ramrod_data *p_ramrod;
struct qed_sp_init_data init_data;
struct qed_spq_entry *p_ent;
+ u16 flags, trans_to_state;
int rc;
/* Get SPQ entry */
@@ -301,12 +306,17 @@ static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
return rc;
p_ramrod = &p_ent->ramrod.iwarp_modify_qp;
- SET_FIELD(p_ramrod->flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN,
- 0x1);
+
+ flags = le16_to_cpu(p_ramrod->flags);
+ SET_FIELD(flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN, 0x1);
+ p_ramrod->flags = cpu_to_le16(flags);
+
if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING)
- p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_CLOSING;
+ trans_to_state = IWARP_MODIFY_QP_STATE_CLOSING;
else
- p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_ERROR;
+ trans_to_state = IWARP_MODIFY_QP_STATE_ERROR;
+
+ p_ramrod->transition_to_state = cpu_to_le16(trans_to_state);
rc = qed_spq_post(p_hwfn, p_ent, NULL);
@@ -354,7 +364,7 @@ qed_iwarp2roce_state(enum qed_iwarp_qp_state state)
}
}
-const char *iwarp_state_names[] = {
+static const char * const iwarp_state_names[] = {
"IDLE",
"RTS",
"TERMINATE",
@@ -509,7 +519,8 @@ int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp)
/* Make sure ep is closed before returning and freeing memory. */
if (ep) {
- while (ep->state != QED_IWARP_EP_CLOSED && wait_count++ < 200)
+ while (READ_ONCE(ep->state) != QED_IWARP_EP_CLOSED &&
+ wait_count++ < 200)
msleep(100);
if (ep->state != QED_IWARP_EP_CLOSED)
@@ -618,6 +629,7 @@ qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
dma_addr_t async_output_phys;
dma_addr_t in_pdata_phys;
u16 physical_q;
+ u16 flags = 0;
u8 tcp_flags;
int rc;
int i;
@@ -670,13 +682,14 @@ qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
tcp->vlan_id = cpu_to_le16(ep->cm_info.vlan);
tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags;
- tcp->flags = 0;
- SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN,
+
+ SET_FIELD(flags, TCP_OFFLOAD_PARAMS_OPT2_TS_EN,
!!(tcp_flags & QED_IWARP_TS_EN));
- SET_FIELD(tcp->flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN,
+ SET_FIELD(flags, TCP_OFFLOAD_PARAMS_OPT2_DA_EN,
!!(tcp_flags & QED_IWARP_DA_EN));
+ tcp->flags = cpu_to_le16(flags);
tcp->ip_version = ep->cm_info.ip_version;
for (i = 0; i < 4; i++) {
@@ -691,6 +704,12 @@ qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
tcp->ttl = 0x40;
tcp->tos_or_tc = 0;
+ tcp->max_rt_time = QED_IWARP_DEF_MAX_RT_TIME;
+ tcp->cwnd = cpu_to_le32(QED_IWARP_DEF_CWND_FACTOR * ep->mss);
+ tcp->ka_max_probe_cnt = QED_IWARP_DEF_KA_MAX_PROBE_CNT;
+ tcp->ka_timeout = cpu_to_le32(QED_IWARP_DEF_KA_TIMEOUT);
+ tcp->ka_interval = cpu_to_le32(QED_IWARP_DEF_KA_INTERVAL);
+
tcp->rcv_wnd_scale = (u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale;
tcp->connect_mode = ep->connect_mode;
@@ -720,6 +739,7 @@ qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
union async_output *async_data;
u16 mpa_ord, mpa_ird;
u8 mpa_hdr_size = 0;
+ u16 ulp_data_len;
u8 mpa_rev;
async_data = &ep->ep_buffer_virt->async_output;
@@ -783,8 +803,8 @@ qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
/* Strip mpa v2 hdr from private data before sending to upper layer */
ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_hdr_size;
- ep->cm_info.private_data_len = async_data->mpa_request.ulp_data_len -
- mpa_hdr_size;
+ ulp_data_len = le16_to_cpu(async_data->mpa_request.ulp_data_len);
+ ep->cm_info.private_data_len = ulp_data_len - mpa_hdr_size;
params.event = QED_IWARP_EVENT_MPA_REQUEST;
params.cm_info = &ep->cm_info;
@@ -799,6 +819,8 @@ static int
qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
{
struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod;
+ struct mpa_outgoing_params *common;
+ struct qed_iwarp_info *iwarp_info;
struct qed_sp_init_data init_data;
dma_addr_t async_output_phys;
struct qed_spq_entry *p_ent;
@@ -806,6 +828,7 @@ qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
dma_addr_t in_pdata_phys;
struct qed_rdma_qp *qp;
bool reject;
+ u32 val;
int rc;
if (!ep)
@@ -830,18 +853,21 @@ qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
return rc;
p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload;
+ common = &p_mpa_ramrod->common;
+
out_pdata_phys = ep->ep_buffer_phys +
offsetof(struct qed_iwarp_ep_memory, out_pdata);
- DMA_REGPAIR_LE(p_mpa_ramrod->common.outgoing_ulp_buffer.addr,
- out_pdata_phys);
- p_mpa_ramrod->common.outgoing_ulp_buffer.len =
- ep->cm_info.private_data_len;
- p_mpa_ramrod->common.crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed;
+ DMA_REGPAIR_LE(common->outgoing_ulp_buffer.addr, out_pdata_phys);
- p_mpa_ramrod->common.out_rq.ord = ep->cm_info.ord;
- p_mpa_ramrod->common.out_rq.ird = ep->cm_info.ird;
+ val = ep->cm_info.private_data_len;
+ common->outgoing_ulp_buffer.len = cpu_to_le16(val);
+ common->crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed;
- p_mpa_ramrod->tcp_cid = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid;
+ common->out_rq.ord = cpu_to_le32(ep->cm_info.ord);
+ common->out_rq.ird = cpu_to_le32(ep->cm_info.ird);
+
+ val = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid;
+ p_mpa_ramrod->tcp_cid = cpu_to_le32(val);
in_pdata_phys = ep->ep_buffer_phys +
offsetof(struct qed_iwarp_ep_memory, in_pdata);
@@ -863,9 +889,11 @@ qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
p_mpa_ramrod->stats_counter_id =
RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + qp->stats_queue;
} else {
- p_mpa_ramrod->common.reject = 1;
+ common->reject = 1;
}
+ iwarp_info = &p_hwfn->p_rdma_info->iwarp;
+ p_mpa_ramrod->rcv_wnd = cpu_to_le16(iwarp_info->rcv_wnd_size);
p_mpa_ramrod->mode = ep->mpa_rev;
SET_FIELD(p_mpa_ramrod->rtr_pref,
IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED, ep->rtr_type);
@@ -903,20 +931,20 @@ qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
}
spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
- list_del(&ep->list_entry);
- list_add_tail(&ep->list_entry,
- &p_hwfn->p_rdma_info->iwarp.ep_free_list);
+ list_move_tail(&ep->list_entry,
+ &p_hwfn->p_rdma_info->iwarp.ep_free_list);
spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
}
-void
+static void
qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
{
struct mpa_v2_hdr *mpa_v2_params;
union async_output *async_data;
u16 mpa_ird, mpa_ord;
u8 mpa_data_size = 0;
+ u16 ulp_data_len;
if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) {
mpa_v2_params =
@@ -928,14 +956,15 @@ qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK);
ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK);
}
- async_data = &ep->ep_buffer_virt->async_output;
+ async_data = &ep->ep_buffer_virt->async_output;
ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size;
- ep->cm_info.private_data_len = async_data->mpa_response.ulp_data_len -
- mpa_data_size;
+
+ ulp_data_len = le16_to_cpu(async_data->mpa_response.ulp_data_len);
+ ep->cm_info.private_data_len = ulp_data_len - mpa_data_size;
}
-void
+static void
qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
{
struct qed_iwarp_cm_event_params params;
@@ -991,8 +1020,6 @@ qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn,
params.ep_context = ep;
- ep->state = QED_IWARP_EP_CLOSED;
-
switch (fw_return_code) {
case RDMA_RETURN_OK:
ep->qp->max_rd_atomic_req = ep->cm_info.ord;
@@ -1052,6 +1079,10 @@ qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn,
break;
}
+ if (fw_return_code != RDMA_RETURN_OK)
+ /* paired with READ_ONCE in destroy_qp */
+ smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
+
ep->event_cb(ep->cb_context, &params);
/* on passive side, if there is no associated QP (REJECT) we need to
@@ -1127,7 +1158,6 @@ int qed_iwarp_connect(void *rdma_cxt,
struct qed_iwarp_info *iwarp_info;
struct qed_iwarp_ep *ep;
u8 mpa_data_size = 0;
- u8 ts_hdr_size = 0;
u32 cid;
int rc;
@@ -1186,10 +1216,7 @@ int qed_iwarp_connect(void *rdma_cxt,
iparams->cm_info.private_data,
iparams->cm_info.private_data_len);
- if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN)
- ts_hdr_size = TIMESTAMP_HEADER_SIZE;
-
- ep->mss = iparams->mss - ts_hdr_size;
+ ep->mss = iparams->mss;
ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
ep->event_cb = iparams->event_cb;
@@ -1272,6 +1299,14 @@ qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap)
prev_weight = weight;
while (weight) {
+ /* If the HW device is during recovery, all resources are
+ * immediately reset without receiving a per-cid indication
+ * from HW. In this case we don't expect the cid_map to be
+ * cleared.
+ */
+ if (p_hwfn->cdev->recov_in_prog)
+ return 0;
+
msleep(QED_IWARP_MAX_CID_CLEAN_TIME);
weight = bitmap_weight(bmap->bitmap, bmap->max_count);
@@ -1402,12 +1437,22 @@ int qed_iwarp_alloc(struct qed_hwfn *p_hwfn)
INIT_LIST_HEAD(&p_hwfn->p_rdma_info->iwarp.ep_free_list);
spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock);
- return qed_iwarp_prealloc_ep(p_hwfn, true);
+ rc = qed_iwarp_prealloc_ep(p_hwfn, true);
+ if (rc)
+ return rc;
+
+ return qed_ooo_alloc(p_hwfn);
}
void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn)
{
+ struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
+
+ qed_ooo_free(p_hwfn);
qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1);
+ kfree(iwarp_info->mpa_bufs);
+ kfree(iwarp_info->partial_fpdus);
+ kfree(iwarp_info->mpa_intermediate_buf);
}
int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams)
@@ -1589,8 +1634,6 @@ qed_iwarp_get_listener(struct qed_hwfn *p_hwfn,
static const u32 ip_zero[4] = { 0, 0, 0, 0 };
bool found = false;
- qed_iwarp_print_cm_info(p_hwfn, cm_info);
-
list_for_each_entry(listener,
&p_hwfn->p_rdma_info->iwarp.listen_list,
list_entry) {
@@ -1651,6 +1694,15 @@ qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
+ if (!ether_addr_equal(ethh->h_dest,
+ p_hwfn->p_rdma_info->iwarp.mac_addr)) {
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "Got unexpected mac %pM instead of %pM\n",
+ ethh->h_dest, p_hwfn->p_rdma_info->iwarp.mac_addr);
+ return -EINVAL;
+ }
+
ether_addr_copy(remote_mac_addr, ethh->h_source);
ether_addr_copy(local_mac_addr, ethh->h_dest);
@@ -1663,21 +1715,36 @@ qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
iph = (struct iphdr *)((u8 *)(ethh) + eth_hlen);
if (eth_type == ETH_P_IP) {
+ if (iph->protocol != IPPROTO_TCP) {
+ DP_NOTICE(p_hwfn,
+ "Unexpected ip protocol on ll2 %x\n",
+ iph->protocol);
+ return -EINVAL;
+ }
+
cm_info->local_ip[0] = ntohl(iph->daddr);
cm_info->remote_ip[0] = ntohl(iph->saddr);
- cm_info->ip_version = TCP_IPV4;
+ cm_info->ip_version = QED_TCP_IPV4;
ip_hlen = (iph->ihl) * sizeof(u32);
*payload_len = ntohs(iph->tot_len) - ip_hlen;
} else if (eth_type == ETH_P_IPV6) {
ip6h = (struct ipv6hdr *)iph;
+
+ if (ip6h->nexthdr != IPPROTO_TCP) {
+ DP_NOTICE(p_hwfn,
+ "Unexpected ip protocol on ll2 %x\n",
+ iph->protocol);
+ return -EINVAL;
+ }
+
for (i = 0; i < 4; i++) {
cm_info->local_ip[i] =
ntohl(ip6h->daddr.in6_u.u6_addr32[i]);
cm_info->remote_ip[i] =
ntohl(ip6h->saddr.in6_u.u6_addr32[i]);
}
- cm_info->ip_version = TCP_IPV6;
+ cm_info->ip_version = QED_TCP_IPV6;
ip_hlen = sizeof(*ip6h);
*payload_len = ntohs(ip6h->payload_len);
@@ -1705,6 +1772,585 @@ qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
return 0;
}
+static struct qed_iwarp_fpdu *qed_iwarp_get_curr_fpdu(struct qed_hwfn *p_hwfn,
+ u16 cid)
+{
+ struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
+ struct qed_iwarp_fpdu *partial_fpdu;
+ u32 idx;
+
+ idx = cid - qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP);
+ if (idx >= iwarp_info->max_num_partial_fpdus) {
+ DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid,
+ iwarp_info->max_num_partial_fpdus);
+ return NULL;
+ }
+
+ partial_fpdu = &iwarp_info->partial_fpdus[idx];
+
+ return partial_fpdu;
+}
+
+enum qed_iwarp_mpa_pkt_type {
+ QED_IWARP_MPA_PKT_PACKED,
+ QED_IWARP_MPA_PKT_PARTIAL,
+ QED_IWARP_MPA_PKT_UNALIGNED
+};
+
+#define QED_IWARP_INVALID_FPDU_LENGTH 0xffff
+#define QED_IWARP_MPA_FPDU_LENGTH_SIZE (2)
+#define QED_IWARP_MPA_CRC32_DIGEST_SIZE (4)
+
+/* Pad to multiple of 4 */
+#define QED_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) ALIGN(data_len, 4)
+#define QED_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \
+ (QED_IWARP_PDU_DATA_LEN_WITH_PAD((_mpa_len) + \
+ QED_IWARP_MPA_FPDU_LENGTH_SIZE) + \
+ QED_IWARP_MPA_CRC32_DIGEST_SIZE)
+
+/* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */
+#define QED_IWARP_MAX_BDS_PER_FPDU 3
+
+static const char * const pkt_type_str[] = {
+ "QED_IWARP_MPA_PKT_PACKED",
+ "QED_IWARP_MPA_PKT_PARTIAL",
+ "QED_IWARP_MPA_PKT_UNALIGNED"
+};
+
+static int
+qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_fpdu *fpdu,
+ struct qed_iwarp_ll2_buff *buf);
+
+static enum qed_iwarp_mpa_pkt_type
+qed_iwarp_mpa_classify(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_fpdu *fpdu,
+ u16 tcp_payload_len, u8 *mpa_data)
+{
+ enum qed_iwarp_mpa_pkt_type pkt_type;
+ u16 mpa_len;
+
+ if (fpdu->incomplete_bytes) {
+ pkt_type = QED_IWARP_MPA_PKT_UNALIGNED;
+ goto out;
+ }
+
+ /* special case of one byte remaining...
+ * lower byte will be read next packet
+ */
+ if (tcp_payload_len == 1) {
+ fpdu->fpdu_length = *mpa_data << BITS_PER_BYTE;
+ pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
+ goto out;
+ }
+
+ mpa_len = ntohs(*(__force __be16 *)mpa_data);
+ fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
+
+ if (fpdu->fpdu_length <= tcp_payload_len)
+ pkt_type = QED_IWARP_MPA_PKT_PACKED;
+ else
+ pkt_type = QED_IWARP_MPA_PKT_PARTIAL;
+
+out:
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n",
+ pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len);
+
+ return pkt_type;
+}
+
+static void
+qed_iwarp_init_fpdu(struct qed_iwarp_ll2_buff *buf,
+ struct qed_iwarp_fpdu *fpdu,
+ struct unaligned_opaque_data *pkt_data,
+ u16 tcp_payload_size, u8 placement_offset)
+{
+ u16 first_mpa_offset = le16_to_cpu(pkt_data->first_mpa_offset);
+
+ fpdu->mpa_buf = buf;
+ fpdu->pkt_hdr = buf->data_phys_addr + placement_offset;
+ fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset;
+ fpdu->mpa_frag = buf->data_phys_addr + first_mpa_offset;
+ fpdu->mpa_frag_virt = (u8 *)(buf->data) + first_mpa_offset;
+
+ if (tcp_payload_size == 1)
+ fpdu->incomplete_bytes = QED_IWARP_INVALID_FPDU_LENGTH;
+ else if (tcp_payload_size < fpdu->fpdu_length)
+ fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size;
+ else
+ fpdu->incomplete_bytes = 0; /* complete fpdu */
+
+ fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes;
+}
+
+static int
+qed_iwarp_cp_pkt(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_fpdu *fpdu,
+ struct unaligned_opaque_data *pkt_data,
+ struct qed_iwarp_ll2_buff *buf, u16 tcp_payload_size)
+{
+ u16 first_mpa_offset = le16_to_cpu(pkt_data->first_mpa_offset);
+ u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf;
+ int rc;
+
+ /* need to copy the data from the partial packet stored in fpdu
+ * to the new buf, for this we also need to move the data currently
+ * placed on the buf. The assumption is that the buffer is big enough
+ * since fpdu_length <= mss, we use an intermediate buffer since
+ * we may need to copy the new data to an overlapping location
+ */
+ if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) {
+ DP_ERR(p_hwfn,
+ "MPA ALIGN: Unexpected: buffer is not large enough for split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n",
+ buf->buff_size, fpdu->mpa_frag_len,
+ tcp_payload_size, fpdu->incomplete_bytes);
+ return -EINVAL;
+ }
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n",
+ fpdu->mpa_frag_virt, fpdu->mpa_frag_len,
+ (u8 *)(buf->data) + first_mpa_offset, tcp_payload_size);
+
+ memcpy(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len);
+ memcpy(tmp_buf + fpdu->mpa_frag_len,
+ (u8 *)(buf->data) + first_mpa_offset, tcp_payload_size);
+
+ rc = qed_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf);
+ if (rc)
+ return rc;
+
+ /* If we managed to post the buffer copy the data to the new buffer
+ * o/w this will occur in the next round...
+ */
+ memcpy((u8 *)(buf->data), tmp_buf,
+ fpdu->mpa_frag_len + tcp_payload_size);
+
+ fpdu->mpa_buf = buf;
+ /* fpdu->pkt_hdr remains as is */
+ /* fpdu->mpa_frag is overridden with new buf */
+ fpdu->mpa_frag = buf->data_phys_addr;
+ fpdu->mpa_frag_virt = buf->data;
+ fpdu->mpa_frag_len += tcp_payload_size;
+
+ fpdu->incomplete_bytes -= tcp_payload_size;
+
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n",
+ buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size,
+ fpdu->incomplete_bytes);
+
+ return 0;
+}
+
+static void
+qed_iwarp_update_fpdu_length(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_fpdu *fpdu, u8 *mpa_data)
+{
+ u16 mpa_len;
+
+ /* Update incomplete packets if needed */
+ if (fpdu->incomplete_bytes == QED_IWARP_INVALID_FPDU_LENGTH) {
+ /* Missing lower byte is now available */
+ mpa_len = fpdu->fpdu_length | *mpa_data;
+ fpdu->fpdu_length = QED_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
+ /* one byte of hdr */
+ fpdu->mpa_frag_len = 1;
+ fpdu->incomplete_bytes = fpdu->fpdu_length - 1;
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n",
+ mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes);
+ }
+}
+
+#define QED_IWARP_IS_RIGHT_EDGE(_curr_pkt) \
+ (GET_FIELD((_curr_pkt)->flags, \
+ UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE))
+
+/* This function is used to recycle a buffer using the ll2 drop option. It
+ * uses the mechanism to ensure that all buffers posted to tx before this one
+ * were completed. The buffer sent here will be sent as a cookie in the tx
+ * completion function and can then be reposted to rx chain when done. The flow
+ * that requires this is the flow where a FPDU splits over more than 3 tcp
+ * segments. In this case the driver needs to re-post a rx buffer instead of
+ * the one received, but driver can't simply repost a buffer it copied from
+ * as there is a case where the buffer was originally a packed FPDU, and is
+ * partially posted to FW. Driver needs to ensure FW is done with it.
+ */
+static int
+qed_iwarp_recycle_pkt(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_fpdu *fpdu,
+ struct qed_iwarp_ll2_buff *buf)
+{
+ struct qed_ll2_tx_pkt_info tx_pkt;
+ u8 ll2_handle;
+ int rc;
+
+ memset(&tx_pkt, 0, sizeof(tx_pkt));
+ tx_pkt.num_of_bds = 1;
+ tx_pkt.tx_dest = QED_LL2_TX_DEST_DROP;
+ tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
+ tx_pkt.first_frag = fpdu->pkt_hdr;
+ tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
+ buf->piggy_buf = NULL;
+ tx_pkt.cookie = buf;
+
+ ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
+
+ rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
+ if (rc)
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Can't drop packet rc=%d\n", rc);
+
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n",
+ (unsigned long int)tx_pkt.first_frag,
+ tx_pkt.first_frag_len, buf, rc);
+
+ return rc;
+}
+
+static int
+qed_iwarp_win_right_edge(struct qed_hwfn *p_hwfn, struct qed_iwarp_fpdu *fpdu)
+{
+ struct qed_ll2_tx_pkt_info tx_pkt;
+ u8 ll2_handle;
+ int rc;
+
+ memset(&tx_pkt, 0, sizeof(tx_pkt));
+ tx_pkt.num_of_bds = 1;
+ tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
+ tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
+
+ tx_pkt.first_frag = fpdu->pkt_hdr;
+ tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
+ tx_pkt.enable_ip_cksum = true;
+ tx_pkt.enable_l4_cksum = true;
+ tx_pkt.calc_ip_len = true;
+ /* vlan overload with enum iwarp_ll2_tx_queues */
+ tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE;
+
+ ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
+
+ rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
+ if (rc)
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Can't send right edge rc=%d\n", rc);
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n",
+ tx_pkt.num_of_bds,
+ (unsigned long int)tx_pkt.first_frag,
+ tx_pkt.first_frag_len, rc);
+
+ return rc;
+}
+
+static int
+qed_iwarp_send_fpdu(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_fpdu *fpdu,
+ struct unaligned_opaque_data *curr_pkt,
+ struct qed_iwarp_ll2_buff *buf,
+ u16 tcp_payload_size, enum qed_iwarp_mpa_pkt_type pkt_type)
+{
+ struct qed_ll2_tx_pkt_info tx_pkt;
+ u16 first_mpa_offset;
+ u8 ll2_handle;
+ int rc;
+
+ memset(&tx_pkt, 0, sizeof(tx_pkt));
+
+ /* An unaligned packet means it's split over two tcp segments. So the
+ * complete packet requires 3 bds, one for the header, one for the
+ * part of the fpdu of the first tcp segment, and the last fragment
+ * will point to the remainder of the fpdu. A packed pdu, requires only
+ * two bds, one for the header and one for the data.
+ */
+ tx_pkt.num_of_bds = (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2;
+ tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
+ tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2; /* offset in words */
+
+ /* Send the mpa_buf only with the last fpdu (in case of packed) */
+ if (pkt_type == QED_IWARP_MPA_PKT_UNALIGNED ||
+ tcp_payload_size <= fpdu->fpdu_length)
+ tx_pkt.cookie = fpdu->mpa_buf;
+
+ tx_pkt.first_frag = fpdu->pkt_hdr;
+ tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
+ tx_pkt.enable_ip_cksum = true;
+ tx_pkt.enable_l4_cksum = true;
+ tx_pkt.calc_ip_len = true;
+ /* vlan overload with enum iwarp_ll2_tx_queues */
+ tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE;
+
+ /* special case of unaligned packet and not packed, need to send
+ * both buffers as cookie to release.
+ */
+ if (tcp_payload_size == fpdu->incomplete_bytes)
+ fpdu->mpa_buf->piggy_buf = buf;
+
+ ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
+
+ /* Set first fragment to header */
+ rc = qed_ll2_prepare_tx_packet(p_hwfn, ll2_handle, &tx_pkt, true);
+ if (rc)
+ goto out;
+
+ /* Set second fragment to first part of packet */
+ rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle,
+ fpdu->mpa_frag,
+ fpdu->mpa_frag_len);
+ if (rc)
+ goto out;
+
+ if (!fpdu->incomplete_bytes)
+ goto out;
+
+ first_mpa_offset = le16_to_cpu(curr_pkt->first_mpa_offset);
+
+ /* Set third fragment to second part of the packet */
+ rc = qed_ll2_set_fragment_of_tx_packet(p_hwfn,
+ ll2_handle,
+ buf->data_phys_addr +
+ first_mpa_offset,
+ fpdu->incomplete_bytes);
+out:
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "MPA_ALIGN: Sent FPDU num_bds=%d first_frag_len=%x, mpa_frag_len=0x%x, incomplete_bytes:0x%x rc=%d\n",
+ tx_pkt.num_of_bds,
+ tx_pkt.first_frag_len,
+ fpdu->mpa_frag_len,
+ fpdu->incomplete_bytes, rc);
+
+ return rc;
+}
+
+static void
+qed_iwarp_mpa_get_data(struct qed_hwfn *p_hwfn,
+ struct unaligned_opaque_data *curr_pkt,
+ u32 opaque_data0, u32 opaque_data1)
+{
+ u64 opaque_data;
+
+ opaque_data = HILO_64(cpu_to_le32(opaque_data1),
+ cpu_to_le32(opaque_data0));
+ *curr_pkt = *((struct unaligned_opaque_data *)&opaque_data);
+
+ le16_add_cpu(&curr_pkt->first_mpa_offset,
+ curr_pkt->tcp_payload_offset);
+}
+
+/* This function is called when an unaligned or incomplete MPA packet arrives
+ * driver needs to align the packet, perhaps using previous data and send
+ * it down to FW once it is aligned.
+ */
+static int
+qed_iwarp_process_mpa_pkt(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_ll2_mpa_buf *mpa_buf)
+{
+ struct unaligned_opaque_data *curr_pkt = &mpa_buf->data;
+ struct qed_iwarp_ll2_buff *buf = mpa_buf->ll2_buf;
+ enum qed_iwarp_mpa_pkt_type pkt_type;
+ struct qed_iwarp_fpdu *fpdu;
+ u16 cid, first_mpa_offset;
+ int rc = -EINVAL;
+ u8 *mpa_data;
+
+ cid = le32_to_cpu(curr_pkt->cid);
+
+ fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)cid);
+ if (!fpdu) { /* something corrupt with cid, post rx back */
+ DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n",
+ cid);
+ goto err;
+ }
+
+ do {
+ first_mpa_offset = le16_to_cpu(curr_pkt->first_mpa_offset);
+ mpa_data = ((u8 *)(buf->data) + first_mpa_offset);
+
+ pkt_type = qed_iwarp_mpa_classify(p_hwfn, fpdu,
+ mpa_buf->tcp_payload_len,
+ mpa_data);
+
+ switch (pkt_type) {
+ case QED_IWARP_MPA_PKT_PARTIAL:
+ qed_iwarp_init_fpdu(buf, fpdu,
+ curr_pkt,
+ mpa_buf->tcp_payload_len,
+ mpa_buf->placement_offset);
+
+ if (!QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
+ mpa_buf->tcp_payload_len = 0;
+ break;
+ }
+
+ rc = qed_iwarp_win_right_edge(p_hwfn, fpdu);
+
+ if (rc) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Can't send FPDU:reset rc=%d\n", rc);
+ memset(fpdu, 0, sizeof(*fpdu));
+ break;
+ }
+
+ mpa_buf->tcp_payload_len = 0;
+ break;
+ case QED_IWARP_MPA_PKT_PACKED:
+ qed_iwarp_init_fpdu(buf, fpdu,
+ curr_pkt,
+ mpa_buf->tcp_payload_len,
+ mpa_buf->placement_offset);
+
+ rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
+ mpa_buf->tcp_payload_len,
+ pkt_type);
+ if (rc) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Can't send FPDU:reset rc=%d\n", rc);
+ memset(fpdu, 0, sizeof(*fpdu));
+ break;
+ }
+
+ mpa_buf->tcp_payload_len -= fpdu->fpdu_length;
+ le16_add_cpu(&curr_pkt->first_mpa_offset,
+ fpdu->fpdu_length);
+ break;
+ case QED_IWARP_MPA_PKT_UNALIGNED:
+ qed_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data);
+ if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) {
+ /* special handling of fpdu split over more
+ * than 2 segments
+ */
+ if (QED_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
+ rc = qed_iwarp_win_right_edge(p_hwfn,
+ fpdu);
+ /* packet will be re-processed later */
+ if (rc)
+ return rc;
+ }
+
+ rc = qed_iwarp_cp_pkt(p_hwfn, fpdu, curr_pkt,
+ buf,
+ mpa_buf->tcp_payload_len);
+ if (rc) /* packet will be re-processed later */
+ return rc;
+
+ mpa_buf->tcp_payload_len = 0;
+ break;
+ }
+
+ rc = qed_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
+ mpa_buf->tcp_payload_len,
+ pkt_type);
+ if (rc) {
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
+ "Can't send FPDU:delay rc=%d\n", rc);
+ /* don't reset fpdu -> we need it for next
+ * classify
+ */
+ break;
+ }
+
+ mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes;
+ le16_add_cpu(&curr_pkt->first_mpa_offset,
+ fpdu->incomplete_bytes);
+
+ /* The framed PDU was sent - no more incomplete bytes */
+ fpdu->incomplete_bytes = 0;
+ break;
+ }
+ } while (mpa_buf->tcp_payload_len && !rc);
+
+ return rc;
+
+err:
+ qed_iwarp_ll2_post_rx(p_hwfn,
+ buf,
+ p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle);
+ return rc;
+}
+
+static void qed_iwarp_process_pending_pkts(struct qed_hwfn *p_hwfn)
+{
+ struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
+ struct qed_iwarp_ll2_mpa_buf *mpa_buf = NULL;
+ int rc;
+
+ while (!list_empty(&iwarp_info->mpa_buf_pending_list)) {
+ mpa_buf = list_first_entry(&iwarp_info->mpa_buf_pending_list,
+ struct qed_iwarp_ll2_mpa_buf,
+ list_entry);
+
+ rc = qed_iwarp_process_mpa_pkt(p_hwfn, mpa_buf);
+
+ /* busy means break and continue processing later, don't
+ * remove the buf from the pending list.
+ */
+ if (rc == -EBUSY)
+ break;
+
+ list_move_tail(&mpa_buf->list_entry,
+ &iwarp_info->mpa_buf_list);
+
+ if (rc) { /* different error, don't continue */
+ DP_NOTICE(p_hwfn, "process pkts failed rc=%d\n", rc);
+ break;
+ }
+ }
+}
+
+static void
+qed_iwarp_ll2_comp_mpa_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
+{
+ struct qed_iwarp_ll2_mpa_buf *mpa_buf;
+ struct qed_iwarp_info *iwarp_info;
+ struct qed_hwfn *p_hwfn = cxt;
+ u16 first_mpa_offset;
+
+ iwarp_info = &p_hwfn->p_rdma_info->iwarp;
+ mpa_buf = list_first_entry(&iwarp_info->mpa_buf_list,
+ struct qed_iwarp_ll2_mpa_buf, list_entry);
+ if (!mpa_buf) {
+ DP_ERR(p_hwfn, "No free mpa buf\n");
+ goto err;
+ }
+
+ list_del(&mpa_buf->list_entry);
+ qed_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data,
+ data->opaque_data_0, data->opaque_data_1);
+
+ first_mpa_offset = le16_to_cpu(mpa_buf->data.first_mpa_offset);
+
+ DP_VERBOSE(p_hwfn,
+ QED_MSG_RDMA,
+ "LL2 MPA CompRx payload_len:0x%x\tfirst_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n",
+ data->length.packet_length, first_mpa_offset,
+ mpa_buf->data.tcp_payload_offset, mpa_buf->data.flags,
+ mpa_buf->data.cid);
+
+ mpa_buf->ll2_buf = data->cookie;
+ mpa_buf->tcp_payload_len = data->length.packet_length -
+ first_mpa_offset;
+
+ first_mpa_offset += data->u.placement_offset;
+ mpa_buf->data.first_mpa_offset = cpu_to_le16(first_mpa_offset);
+ mpa_buf->placement_offset = data->u.placement_offset;
+
+ list_add_tail(&mpa_buf->list_entry, &iwarp_info->mpa_buf_pending_list);
+
+ qed_iwarp_process_pending_pkts(p_hwfn);
+ return;
+err:
+ qed_iwarp_ll2_post_rx(p_hwfn, data->cookie,
+ iwarp_info->ll2_mpa_handle);
+}
+
static void
qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
{
@@ -1717,7 +2363,6 @@ qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
u8 local_mac_addr[ETH_ALEN];
struct qed_iwarp_ep *ep;
int tcp_start_offset;
- u8 ts_hdr_size = 0;
u8 ll2_syn_handle;
int payload_len;
u32 hdr_size;
@@ -1725,6 +2370,14 @@ qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
memset(&cm_info, 0, sizeof(cm_info));
ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
+
+ /* Check if packet was received with errors... */
+ if (data->err_flags) {
+ DP_NOTICE(p_hwfn, "Error received on SYN packet: 0x%x\n",
+ data->err_flags);
+ goto err;
+ }
+
if (GET_FIELD(data->parse_flags,
PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) &&
GET_FIELD(data->parse_flags, PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) {
@@ -1749,13 +2402,6 @@ qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
memset(&tx_pkt, 0, sizeof(tx_pkt));
tx_pkt.num_of_bds = 1;
- tx_pkt.vlan = data->vlan;
-
- if (GET_FIELD(data->parse_flags,
- PARSING_AND_ERR_FLAGS_TAG8021QEXIST))
- SET_FIELD(tx_pkt.bd_flags,
- CORE_TX_BD_DATA_VLAN_INSERTION, 1);
-
tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2;
tx_pkt.tx_dest = QED_LL2_TX_DEST_LB;
tx_pkt.first_frag = buf->data_phys_addr +
@@ -1794,11 +2440,7 @@ qed_iwarp_ll2_comp_syn_pkt(void *cxt, struct qed_ll2_comp_rx_data *data)
memcpy(&ep->cm_info, &cm_info, sizeof(ep->cm_info));
- if (p_hwfn->p_rdma_info->iwarp.tcp_flags & QED_IWARP_TS_EN)
- ts_hdr_size = TIMESTAMP_HEADER_SIZE;
-
- hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60) +
- ts_hdr_size;
+ hdr_size = ((cm_info.ip_version == QED_TCP_IPV4) ? 40 : 60);
ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size;
ep->mss = min_t(u16, QED_IWARP_MAX_FW_MSS, ep->mss);
@@ -1839,10 +2481,25 @@ static void qed_iwarp_ll2_comp_tx_pkt(void *cxt, u8 connection_handle,
bool b_last_fragment, bool b_last_packet)
{
struct qed_iwarp_ll2_buff *buffer = cookie;
+ struct qed_iwarp_ll2_buff *piggy;
struct qed_hwfn *p_hwfn = cxt;
+ if (!buffer) /* can happen in packed mpa unaligned... */
+ return;
+
/* this was originally an rx packet, post it back */
+ piggy = buffer->piggy_buf;
+ if (piggy) {
+ buffer->piggy_buf = NULL;
+ qed_iwarp_ll2_post_rx(p_hwfn, piggy, connection_handle);
+ }
+
qed_iwarp_ll2_post_rx(p_hwfn, buffer, connection_handle);
+
+ if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle)
+ qed_iwarp_process_pending_pkts(p_hwfn);
+
+ return;
}
static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle,
@@ -1855,13 +2512,47 @@ static void qed_iwarp_ll2_rel_tx_pkt(void *cxt, u8 connection_handle,
if (!buffer)
return;
+ if (buffer->piggy_buf) {
+ dma_free_coherent(&p_hwfn->cdev->pdev->dev,
+ buffer->piggy_buf->buff_size,
+ buffer->piggy_buf->data,
+ buffer->piggy_buf->data_phys_addr);
+
+ kfree(buffer->piggy_buf);
+ }
+
dma_free_coherent(&p_hwfn->cdev->pdev->dev, buffer->buff_size,
buffer->data, buffer->data_phys_addr);
kfree(buffer);
}
-static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
+/* The only slowpath for iwarp ll2 is unalign flush. When this completion
+ * is received, need to reset the FPDU.
+ */
+static void
+qed_iwarp_ll2_slowpath(void *cxt,
+ u8 connection_handle,
+ u32 opaque_data_0, u32 opaque_data_1)
+{
+ struct unaligned_opaque_data unalign_data;
+ struct qed_hwfn *p_hwfn = cxt;
+ struct qed_iwarp_fpdu *fpdu;
+ u32 cid;
+
+ qed_iwarp_mpa_get_data(p_hwfn, &unalign_data,
+ opaque_data_0, opaque_data_1);
+
+ cid = le32_to_cpu(unalign_data.cid);
+
+ DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "(0x%x) Flush fpdu\n", cid);
+
+ fpdu = qed_iwarp_get_curr_fpdu(p_hwfn, (u16)cid);
+ if (fpdu)
+ memset(fpdu, 0, sizeof(*fpdu));
+}
+
+static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn)
{
struct qed_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
int rc = 0;
@@ -1876,8 +2567,29 @@ static int qed_iwarp_ll2_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
}
- qed_llh_remove_mac_filter(p_hwfn,
- p_ptt, p_hwfn->p_rdma_info->iwarp.mac_addr);
+ if (iwarp_info->ll2_ooo_handle != QED_IWARP_HANDLE_INVAL) {
+ rc = qed_ll2_terminate_connection(p_hwfn,
+ iwarp_info->ll2_ooo_handle);
+ if (rc)
+ DP_INFO(p_hwfn, "Failed to terminate ooo connection\n");
+
+ qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
+ iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
+ }
+
+ if (iwarp_info->ll2_mpa_handle != QED_IWARP_HANDLE_INVAL) {
+ rc = qed_ll2_terminate_connection(p_hwfn,
+ iwarp_info->ll2_mpa_handle);
+ if (rc)
+ DP_INFO(p_hwfn, "Failed to terminate mpa connection\n");
+
+ qed_ll2_release_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
+ iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
+ }
+
+ qed_llh_remove_mac_filter(p_hwfn->cdev, 0,
+ p_hwfn->p_rdma_info->iwarp.mac_addr);
+
return rc;
}
@@ -1922,21 +2634,26 @@ qed_iwarp_ll2_alloc_buffers(struct qed_hwfn *p_hwfn,
static int
qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
struct qed_rdma_start_in_params *params,
- struct qed_ptt *p_ptt)
+ u32 rcv_wnd_size)
{
struct qed_iwarp_info *iwarp_info;
struct qed_ll2_acquire_data data;
struct qed_ll2_cbs cbs;
+ u32 buff_size;
+ u16 n_ooo_bufs;
int rc = 0;
+ int i;
iwarp_info = &p_hwfn->p_rdma_info->iwarp;
iwarp_info->ll2_syn_handle = QED_IWARP_HANDLE_INVAL;
+ iwarp_info->ll2_ooo_handle = QED_IWARP_HANDLE_INVAL;
+ iwarp_info->ll2_mpa_handle = QED_IWARP_HANDLE_INVAL;
iwarp_info->max_mtu = params->max_mtu;
ether_addr_copy(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr);
- rc = qed_llh_add_mac_filter(p_hwfn, p_ptt, params->mac_addr);
+ rc = qed_llh_add_mac_filter(p_hwfn->cdev, 0, params->mac_addr);
if (rc)
return rc;
@@ -1945,11 +2662,14 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
cbs.rx_release_cb = qed_iwarp_ll2_rel_rx_pkt;
cbs.tx_comp_cb = qed_iwarp_ll2_comp_tx_pkt;
cbs.tx_release_cb = qed_iwarp_ll2_rel_tx_pkt;
+ cbs.slowpath_cb = NULL;
cbs.cookie = p_hwfn;
memset(&data, 0, sizeof(data));
data.input.conn_type = QED_LL2_TYPE_IWARP;
- data.input.mtu = QED_IWARP_MAX_SYN_PKT_SIZE;
+ /* SYN will use ctx based queues */
+ data.input.rx_conn_type = QED_LL2_RX_TYPE_CTX;
+ data.input.mtu = params->max_mtu;
data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE;
data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE;
data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
@@ -1961,7 +2681,7 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
rc = qed_ll2_acquire_connection(p_hwfn, &data);
if (rc) {
DP_NOTICE(p_hwfn, "Failed to acquire LL2 connection\n");
- qed_llh_remove_mac_filter(p_hwfn, p_ptt, params->mac_addr);
+ qed_llh_remove_mac_filter(p_hwfn->cdev, 0, params->mac_addr);
return rc;
}
@@ -1971,34 +2691,144 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
goto err;
}
+ buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu);
rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
QED_IWARP_LL2_SYN_RX_SIZE,
- QED_IWARP_MAX_SYN_PKT_SIZE,
+ buff_size,
iwarp_info->ll2_syn_handle);
if (rc)
goto err;
+ /* Start OOO connection */
+ data.input.conn_type = QED_LL2_TYPE_OOO;
+ /* OOO/unaligned will use legacy ll2 queues (ram based) */
+ data.input.rx_conn_type = QED_LL2_RX_TYPE_LEGACY;
+ data.input.mtu = params->max_mtu;
+
+ n_ooo_bufs = (QED_IWARP_MAX_OOO * rcv_wnd_size) /
+ iwarp_info->max_mtu;
+ n_ooo_bufs = min_t(u32, n_ooo_bufs, QED_IWARP_LL2_OOO_MAX_RX_SIZE);
+
+ data.input.rx_num_desc = n_ooo_bufs;
+ data.input.rx_num_ooo_buffers = n_ooo_bufs;
+
+ data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
+ data.input.tx_num_desc = QED_IWARP_LL2_OOO_DEF_TX_SIZE;
+ data.p_connection_handle = &iwarp_info->ll2_ooo_handle;
+
+ rc = qed_ll2_acquire_connection(p_hwfn, &data);
+ if (rc)
+ goto err;
+
+ rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
+ if (rc)
+ goto err;
+
+ /* Start Unaligned MPA connection */
+ cbs.rx_comp_cb = qed_iwarp_ll2_comp_mpa_pkt;
+ cbs.slowpath_cb = qed_iwarp_ll2_slowpath;
+
+ memset(&data, 0, sizeof(data));
+ data.input.conn_type = QED_LL2_TYPE_IWARP;
+ data.input.mtu = params->max_mtu;
+ /* FW requires that once a packet arrives OOO, it must have at
+ * least 2 rx buffers available on the unaligned connection
+ * for handling the case that it is a partial fpdu.
+ */
+ data.input.rx_num_desc = n_ooo_bufs * 2;
+ data.input.tx_num_desc = data.input.rx_num_desc;
+ data.input.tx_max_bds_per_packet = QED_IWARP_MAX_BDS_PER_FPDU;
+ data.input.tx_tc = PKT_LB_TC;
+ data.input.tx_dest = QED_LL2_TX_DEST_LB;
+ data.p_connection_handle = &iwarp_info->ll2_mpa_handle;
+ data.input.secondary_queue = true;
+ data.cbs = &cbs;
+
+ rc = qed_ll2_acquire_connection(p_hwfn, &data);
+ if (rc)
+ goto err;
+
+ rc = qed_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
+ if (rc)
+ goto err;
+
+ rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
+ data.input.rx_num_desc,
+ buff_size,
+ iwarp_info->ll2_mpa_handle);
+ if (rc)
+ goto err;
+
+ iwarp_info->partial_fpdus = kcalloc((u16)p_hwfn->p_rdma_info->num_qps,
+ sizeof(*iwarp_info->partial_fpdus),
+ GFP_KERNEL);
+ if (!iwarp_info->partial_fpdus) {
+ rc = -ENOMEM;
+ goto err;
+ }
+
+ iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps;
+
+ iwarp_info->mpa_intermediate_buf = kzalloc(buff_size, GFP_KERNEL);
+ if (!iwarp_info->mpa_intermediate_buf) {
+ rc = -ENOMEM;
+ goto err;
+ }
+
+ /* The mpa_bufs array serves for pending RX packets received on the
+ * mpa ll2 that don't have place on the tx ring and require later
+ * processing. We can't fail on allocation of such a struct therefore
+ * we allocate enough to take care of all rx packets
+ */
+ iwarp_info->mpa_bufs = kcalloc(data.input.rx_num_desc,
+ sizeof(*iwarp_info->mpa_bufs),
+ GFP_KERNEL);
+ if (!iwarp_info->mpa_bufs) {
+ rc = -ENOMEM;
+ goto err;
+ }
+
+ INIT_LIST_HEAD(&iwarp_info->mpa_buf_pending_list);
+ INIT_LIST_HEAD(&iwarp_info->mpa_buf_list);
+ for (i = 0; i < data.input.rx_num_desc; i++)
+ list_add_tail(&iwarp_info->mpa_bufs[i].list_entry,
+ &iwarp_info->mpa_buf_list);
return rc;
err:
- qed_iwarp_ll2_stop(p_hwfn, p_ptt);
+ qed_iwarp_ll2_stop(p_hwfn);
return rc;
}
-int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
+static struct {
+ u32 two_ports;
+ u32 four_ports;
+} qed_iwarp_rcv_wnd_size[MAX_CHIP_IDS] = {
+ {QED_IWARP_RCV_WND_SIZE_DEF_BB_2P, QED_IWARP_RCV_WND_SIZE_DEF_BB_4P},
+ {QED_IWARP_RCV_WND_SIZE_DEF_AH_2P, QED_IWARP_RCV_WND_SIZE_DEF_AH_4P}
+};
+
+int qed_iwarp_setup(struct qed_hwfn *p_hwfn,
struct qed_rdma_start_in_params *params)
{
+ struct qed_dev *cdev = p_hwfn->cdev;
struct qed_iwarp_info *iwarp_info;
+ enum chip_ids chip_id;
u32 rcv_wnd_size;
iwarp_info = &p_hwfn->p_rdma_info->iwarp;
iwarp_info->tcp_flags = QED_IWARP_TS_EN;
- rcv_wnd_size = QED_IWARP_RCV_WND_SIZE_DEF;
+
+ chip_id = QED_IS_BB(cdev) ? CHIP_BB : CHIP_K2;
+ rcv_wnd_size = (qed_device_num_ports(cdev) == 4) ?
+ qed_iwarp_rcv_wnd_size[chip_id].four_ports :
+ qed_iwarp_rcv_wnd_size[chip_id].two_ports;
/* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */
iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) -
ilog2(QED_IWARP_RCV_WND_SIZE_MIN);
+ iwarp_info->rcv_wnd_size = rcv_wnd_size >> iwarp_info->rcv_wnd_scale;
iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED;
iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
@@ -2014,11 +2844,12 @@ int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP,
qed_iwarp_async_event);
+ qed_ooo_setup(p_hwfn);
- return qed_iwarp_ll2_start(p_hwfn, params, p_ptt);
+ return qed_iwarp_ll2_start(p_hwfn, params, rcv_wnd_size);
}
-int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
+int qed_iwarp_stop(struct qed_hwfn *p_hwfn)
{
int rc;
@@ -2027,13 +2858,12 @@ int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
if (rc)
return rc;
- qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP);
-
- return qed_iwarp_ll2_stop(p_hwfn, p_ptt);
+ return qed_iwarp_ll2_stop(p_hwfn);
}
-void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn,
- struct qed_iwarp_ep *ep, u8 fw_return_code)
+static void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_ep *ep,
+ u8 fw_return_code)
{
struct qed_iwarp_cm_event_params params;
@@ -2045,7 +2875,9 @@ void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn,
params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ?
0 : -ECONNRESET;
- ep->state = QED_IWARP_EP_CLOSED;
+ /* paired with READ_ONCE in destroy_qp */
+ smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
+
spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
list_del(&ep->list_entry);
spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
@@ -2053,8 +2885,9 @@ void qed_iwarp_qp_in_error(struct qed_hwfn *p_hwfn,
ep->event_cb(ep->cb_context, &params);
}
-void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn,
- struct qed_iwarp_ep *ep, int fw_ret_code)
+static void qed_iwarp_exception_received(struct qed_hwfn *p_hwfn,
+ struct qed_iwarp_ep *ep,
+ int fw_ret_code)
{
struct qed_iwarp_cm_event_params params;
bool event_cb = false;
@@ -2133,7 +2966,8 @@ qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn,
params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
params.ep_context = ep;
params.cm_info = &ep->cm_info;
- ep->state = QED_IWARP_EP_CLOSED;
+ /* paired with READ_ONCE in destroy_qp */
+ smp_store_release(&ep->state, QED_IWARP_EP_CLOSED);
switch (fw_return_code) {
case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET:
@@ -2183,7 +3017,7 @@ qed_iwarp_tcp_connect_unsuccessful(struct qed_hwfn *p_hwfn,
}
}
-void
+static void
qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn,
struct qed_iwarp_ep *ep, u8 fw_return_code)
{
@@ -2221,13 +3055,15 @@ qed_iwarp_check_ep_ok(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
return true;
}
-static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
- u8 fw_event_code, u16 echo,
- union event_ring_data *data,
+static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
+ __le16 echo, union event_ring_data *data,
u8 fw_return_code)
{
+ struct qed_rdma_events events = p_hwfn->p_rdma_info->events;
struct regpair *fw_handle = &data->rdma_data.async_handle;
struct qed_iwarp_ep *ep = NULL;
+ u16 srq_offset;
+ u16 srq_id;
u16 cid;
ep = (struct qed_iwarp_ep *)(uintptr_t)HILO_64(fw_handle->hi,
@@ -2289,6 +3125,24 @@ static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
qed_iwarp_cid_cleaned(p_hwfn, cid);
break;
+ case IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY:
+ DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_EMPTY\n");
+ srq_offset = p_hwfn->p_rdma_info->srq_id_offset;
+ /* FW assigns value that is no greater than u16 */
+ srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset;
+ events.affiliated_event(events.context,
+ QED_IWARP_EVENT_SRQ_EMPTY,
+ &srq_id);
+ break;
+ case IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT:
+ DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_SRQ_LIMIT\n");
+ srq_offset = p_hwfn->p_rdma_info->srq_id_offset;
+ /* FW assigns value that is no greater than u16 */
+ srq_id = ((u16)le32_to_cpu(fw_handle->lo)) - srq_offset;
+ events.affiliated_event(events.context,
+ QED_IWARP_EVENT_SRQ_LIMIT,
+ &srq_id);
+ break;
case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW:
DP_NOTICE(p_hwfn, "IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n");
generated by cgit (git 2.34.1) at 2025-12-26 06:58:32 +0000