Add T6 active open cmd to open active connections
on T6 adapters.

Signed-off-by: Varun Prakash <va...@chelsio.com>
---
 drivers/scsi/cxgbi/cxgb4i/cxgb4i.c | 86 ++++++++++++++++++++++++++++++++------
 drivers/scsi/cxgbi/libcxgbi.c      |  6 +--
 2 files changed, 77 insertions(+), 15 deletions(-)

diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c 
b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
index 90522d4..a6fc990 100644
--- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
+++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
@@ -188,7 +188,6 @@ static void send_act_open_req(struct cxgbi_sock *csk, 
struct sk_buff *skb,
                                struct l2t_entry *e)
 {
        struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev);
-       int t4 = is_t4(lldi->adapter_type);
        int wscale = cxgbi_sock_compute_wscale(csk->mss_idx);
        unsigned long long opt0;
        unsigned int opt2;
@@ -231,7 +230,7 @@ static void send_act_open_req(struct cxgbi_sock *csk, 
struct sk_buff *skb,
                        csk, &req->local_ip, ntohs(req->local_port),
                        &req->peer_ip, ntohs(req->peer_port),
                        csk->atid, csk->rss_qid);
-       } else {
+       } else if (is_t5(lldi->adapter_type)) {
                struct cpl_t5_act_open_req *req =
                                (struct cpl_t5_act_open_req *)skb->head;
                u32 isn = (prandom_u32() & ~7UL) - 1;
@@ -259,12 +258,45 @@ static void send_act_open_req(struct cxgbi_sock *csk, 
struct sk_buff *skb,
                        csk, &req->local_ip, ntohs(req->local_port),
                        &req->peer_ip, ntohs(req->peer_port),
                        csk->atid, csk->rss_qid);
+       } else {
+               struct cpl_t6_act_open_req *req =
+                               (struct cpl_t6_act_open_req *)skb->head;
+               u32 isn = (prandom_u32() & ~7UL) - 1;
+
+               INIT_TP_WR(req, 0);
+               OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
+                                                           qid_atid));
+               req->local_port = csk->saddr.sin_port;
+               req->peer_port = csk->daddr.sin_port;
+               req->local_ip = csk->saddr.sin_addr.s_addr;
+               req->peer_ip = csk->daddr.sin_addr.s_addr;
+               req->opt0 = cpu_to_be64(opt0);
+               req->params = cpu_to_be64(FILTER_TUPLE_V(
+                               cxgb4_select_ntuple(
+                                       csk->cdev->ports[csk->port_id],
+                                       csk->l2t)));
+               req->rsvd = cpu_to_be32(isn);
+
+               opt2 |= T5_ISS_VALID;
+               opt2 |= RX_FC_DISABLE_F;
+               opt2 |= T5_OPT_2_VALID_F;
+
+               req->opt2 = cpu_to_be32(opt2);
+               req->rsvd2 = cpu_to_be32(0);
+               req->opt3 = cpu_to_be32(0);
+
+               log_debug(1 << CXGBI_DBG_TOE | 1 << CXGBI_DBG_SOCK,
+                         "csk t6 0x%p, %pI4:%u-%pI4:%u, atid %d, qid %u.\n",
+                         csk, &req->local_ip, ntohs(req->local_port),
+                         &req->peer_ip, ntohs(req->peer_port),
+                         csk->atid, csk->rss_qid);
        }
 
        set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id);
 
        pr_info_ipaddr("t%d csk 0x%p,%u,0x%lx,%u, rss_qid %u.\n",
-                      (&csk->saddr), (&csk->daddr), t4 ? 4 : 5, csk,
+                      (&csk->saddr), (&csk->daddr),
+                      CHELSIO_CHIP_VERSION(lldi->adapter_type), csk,
                       csk->state, csk->flags, csk->atid, csk->rss_qid);
 
        cxgb4_l2t_send(csk->cdev->ports[csk->port_id], skb, csk->l2t);
@@ -275,7 +307,6 @@ static void send_act_open_req6(struct cxgbi_sock *csk, 
struct sk_buff *skb,
                               struct l2t_entry *e)
 {
        struct cxgb4_lld_info *lldi = cxgbi_cdev_priv(csk->cdev);
-       int t4 = is_t4(lldi->adapter_type);
        int wscale = cxgbi_sock_compute_wscale(csk->mss_idx);
        unsigned long long opt0;
        unsigned int opt2;
@@ -293,10 +324,9 @@ static void send_act_open_req6(struct cxgbi_sock *csk, 
struct sk_buff *skb,
 
        opt2 = RX_CHANNEL_V(0) |
                RSS_QUEUE_VALID_F |
-               RX_FC_DISABLE_F |
                RSS_QUEUE_V(csk->rss_qid);
 
-       if (t4) {
+       if (is_t4(lldi->adapter_type)) {
                struct cpl_act_open_req6 *req =
                            (struct cpl_act_open_req6 *)skb->head;
 
@@ -321,7 +351,7 @@ static void send_act_open_req6(struct cxgbi_sock *csk, 
struct sk_buff *skb,
                req->params = cpu_to_be32(cxgb4_select_ntuple(
                                          csk->cdev->ports[csk->port_id],
                                          csk->l2t));
-       } else {
+       } else if (is_t5(lldi->adapter_type)) {
                struct cpl_t5_act_open_req6 *req =
                                (struct cpl_t5_act_open_req6 *)skb->head;
 
@@ -344,12 +374,41 @@ static void send_act_open_req6(struct cxgbi_sock *csk, 
struct sk_buff *skb,
                req->params = cpu_to_be64(FILTER_TUPLE_V(cxgb4_select_ntuple(
                                          csk->cdev->ports[csk->port_id],
                                          csk->l2t)));
+       } else {
+               struct cpl_t6_act_open_req6 *req =
+                               (struct cpl_t6_act_open_req6 *)skb->head;
+
+               INIT_TP_WR(req, 0);
+               OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
+                                                           qid_atid));
+               req->local_port = csk->saddr6.sin6_port;
+               req->peer_port = csk->daddr6.sin6_port;
+               req->local_ip_hi = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr);
+               req->local_ip_lo = *(__be64 *)(csk->saddr6.sin6_addr.s6_addr +
+                                                                       8);
+               req->peer_ip_hi = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr);
+               req->peer_ip_lo = *(__be64 *)(csk->daddr6.sin6_addr.s6_addr +
+                                                                       8);
+               req->opt0 = cpu_to_be64(opt0);
+
+               opt2 |= RX_FC_DISABLE_F;
+               opt2 |= T5_OPT_2_VALID_F;
+
+               req->opt2 = cpu_to_be32(opt2);
+
+               req->params = cpu_to_be64(FILTER_TUPLE_V(cxgb4_select_ntuple(
+                                         csk->cdev->ports[csk->port_id],
+                                         csk->l2t)));
+
+               req->rsvd2 = cpu_to_be32(0);
+               req->opt3 = cpu_to_be32(0);
        }
 
        set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id);
 
        pr_info("t%d csk 0x%p,%u,0x%lx,%u, [%pI6]:%u-[%pI6]:%u, rss_qid %u.\n",
-               t4 ? 4 : 5, csk, csk->state, csk->flags, csk->atid,
+               CHELSIO_CHIP_VERSION(lldi->adapter_type), csk, csk->state,
+               csk->flags, csk->atid,
                &csk->saddr6.sin6_addr, ntohs(csk->saddr.sin_port),
                &csk->daddr6.sin6_addr, ntohs(csk->daddr.sin_port),
                csk->rss_qid);
@@ -1381,7 +1440,6 @@ static int init_act_open(struct cxgbi_sock *csk)
        void *daddr;
        unsigned int step;
        unsigned int size, size6;
-       int t4 = is_t4(lldi->adapter_type);
        unsigned int linkspeed;
        unsigned int rcv_winf, snd_winf;
 
@@ -1427,12 +1485,15 @@ static int init_act_open(struct cxgbi_sock *csk)
                cxgb4_clip_get(ndev, (const u32 *)&csk->saddr6.sin6_addr, 1);
 #endif
 
-       if (t4) {
+       if (is_t4(lldi->adapter_type)) {
                size = sizeof(struct cpl_act_open_req);
                size6 = sizeof(struct cpl_act_open_req6);
-       } else {
+       } else if (is_t5(lldi->adapter_type)) {
                size = sizeof(struct cpl_t5_act_open_req);
                size6 = sizeof(struct cpl_t5_act_open_req6);
+       } else {
+               size = sizeof(struct cpl_t6_act_open_req);
+               size6 = sizeof(struct cpl_t6_act_open_req6);
        }
 
        if (csk->csk_family == AF_INET)
@@ -1793,7 +1854,8 @@ static void *t4_uld_add(const struct cxgb4_lld_info *lldi)
        cdev->nports = lldi->nports;
        cdev->mtus = lldi->mtus;
        cdev->nmtus = NMTUS;
-       cdev->rx_credit_thres = cxgb4i_rx_credit_thres;
+       cdev->rx_credit_thres = (CHELSIO_CHIP_VERSION(lldi->adapter_type) <=
+                                CHELSIO_T5) ? cxgb4i_rx_credit_thres : 0;
        cdev->skb_tx_rsvd = CXGB4I_TX_HEADER_LEN;
        cdev->skb_rx_extra = sizeof(struct cpl_iscsi_hdr);
        cdev->itp = &cxgb4i_iscsi_transport;
diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
index 2ffe029..5423378 100644
--- a/drivers/scsi/cxgbi/libcxgbi.c
+++ b/drivers/scsi/cxgbi/libcxgbi.c
@@ -1627,15 +1627,15 @@ static void csk_return_rx_credits(struct cxgbi_sock 
*csk, int copied)
                csk->rcv_wup, cdev->rx_credit_thres,
                csk->rcv_win);
 
+       if (!cdev->rx_credit_thres)
+               return;
+
        if (csk->state != CTP_ESTABLISHED)
                return;
 
        credits = csk->copied_seq - csk->rcv_wup;
        if (unlikely(!credits))
                return;
-       if (unlikely(cdev->rx_credit_thres == 0))
-               return;
-
        must_send = credits + 16384 >= csk->rcv_win;
        if (must_send || credits >= cdev->rx_credit_thres)
                csk->rcv_wup += cdev->csk_send_rx_credits(csk, credits);
-- 
2.0.2

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