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qed: Add iWARP out of order support

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iWARP requires OOO support which is already provided by the ll2
interface (until now was used only for iSCSI offload).
The changes mostly include opening a ll2 dedicated connection for
OOO and notifiying the FW about the handle id.

Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michal Kalderon 2017-09-24 12:09:43 +03:00 committed by David S. Miller
parent e0a8f9de16
commit d1abfd0b4e
3 changed files with 59 additions and 3 deletions
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44
drivers/net/ethernet/qlogic/qed/qed_iwarp.c
View file

@ -41,6 +41,7 @@
#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
@ -119,6 +120,13 @@ 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_params *p_ramrod)
{
p_ramrod->ll2_ooo_q_index = RESC_START(p_hwfn, QED_LL2_QUEUE) +
p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle;
}
static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid)
{
int rc;
@ -1876,6 +1884,16 @@ 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;
}
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;
}
qed_llh_remove_mac_filter(p_hwfn,
p_ptt, p_hwfn->p_rdma_info->iwarp.mac_addr);
return rc;
@ -1927,10 +1945,12 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
struct qed_iwarp_info *iwarp_info;
struct qed_ll2_acquire_data data;
struct qed_ll2_cbs cbs;
u16 n_ooo_bufs;
int rc = 0;
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->max_mtu = params->max_mtu;
@ -1978,6 +1998,29 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
if (rc)
goto err;
/* Start OOO connection */
data.input.conn_type = QED_LL2_TYPE_OOO;
data.input.mtu = params->max_mtu;
n_ooo_bufs = (QED_IWARP_MAX_OOO * QED_IWARP_RCV_WND_SIZE_DEF) /
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;
return rc;
err:
qed_iwarp_ll2_stop(p_hwfn, p_ptt);
@ -2014,6 +2057,7 @@ 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);
}

11
drivers/net/ethernet/qlogic/qed/qed_iwarp.h
View file

@ -47,7 +47,12 @@ enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state);
#define QED_IWARP_LL2_SYN_TX_SIZE (128)
#define QED_IWARP_LL2_SYN_RX_SIZE (256)
#define QED_IWARP_MAX_SYN_PKT_SIZE (128)
#define QED_IWARP_HANDLE_INVAL (0xff)
#define QED_IWARP_LL2_OOO_DEF_TX_SIZE (256)
#define QED_IWARP_MAX_OOO (16)
#define QED_IWARP_LL2_OOO_MAX_RX_SIZE (16384)
#define QED_IWARP_HANDLE_INVAL (0xff)
struct qed_iwarp_ll2_buff {
void *data;
@ -67,6 +72,7 @@ struct qed_iwarp_info {
u8 crc_needed;
u8 tcp_flags;
u8 ll2_syn_handle;
u8 ll2_ooo_handle;
u8 peer2peer;
enum mpa_negotiation_mode mpa_rev;
enum mpa_rtr_type rtr_type;
@ -147,6 +153,9 @@ int qed_iwarp_alloc(struct qed_hwfn *p_hwfn);
int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
struct qed_rdma_start_in_params *params);
void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
struct iwarp_init_func_params *p_ramrod);
int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn);

7
drivers/net/ethernet/qlogic/qed/qed_rdma.c
View file

@ -551,10 +551,13 @@ static int qed_rdma_start_fw(struct qed_hwfn *p_hwfn,
if (rc)
return rc;
if (QED_IS_IWARP_PERSONALITY(p_hwfn))
if (QED_IS_IWARP_PERSONALITY(p_hwfn)) {
qed_iwarp_init_fw_ramrod(p_hwfn,
&p_ent->ramrod.iwarp_init_func.iwarp);
p_ramrod = &p_ent->ramrod.iwarp_init_func.rdma;
else
} else {
p_ramrod = &p_ent->ramrod.roce_init_func.rdma;
}
p_params_header = &p_ramrod->params_header;
p_params_header->cnq_start_offset = (u8)RESC_START(p_hwfn,