[SK_BUFF]: Introduce skb_reset_transport_header(skb)

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / infiniband / hw / cxgb3 / iwch_cm.c

diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
index e5442e34b788566f4adba514fa4bc332db8f8698..66ad4d40ba1d38cf378be3921f33ab3a96bef39e 100644 (file)
--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -209,8 +209,7 @@ static enum iwch_ep_state state_read(struct iwch_ep_common *epc)
        return state;
 }
 
-static inline void __state_set(struct iwch_ep_common *epc,
-                              enum iwch_ep_state new)
+static void __state_set(struct iwch_ep_common *epc, enum iwch_ep_state new)
 {
        epc->state = new;
 }
@@ -306,8 +305,7 @@ static int status2errno(int status)
  */
 static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp)
 {
-       if (skb) {
-               BUG_ON(skb_cloned(skb));
+       if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) {
                skb_trim(skb, 0);
                skb_get(skb);
        } else {
@@ -509,7 +507,7 @@ static void send_mpa_req(struct iwch_ep *ep, struct sk_buff *skb)
         */
        skb_get(skb);
        set_arp_failure_handler(skb, arp_failure_discard);
-       skb->h.raw = skb->data;
+       skb_reset_transport_header(skb);
        len = skb->len;
        req = (struct tx_data_wr *) skb_push(skb, sizeof(*req));
        req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA));
@@ -561,7 +559,7 @@ static int send_mpa_reject(struct iwch_ep *ep, const void *pdata, u8 plen)
        skb_get(skb);
        skb->priority = CPL_PRIORITY_DATA;
        set_arp_failure_handler(skb, arp_failure_discard);
-       skb->h.raw = skb->data;
+       skb_reset_transport_header(skb);
        req = (struct tx_data_wr *) skb_push(skb, sizeof(*req));
        req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA));
        req->wr_lo = htonl(V_WR_TID(ep->hwtid));
@@ -612,7 +610,7 @@ static int send_mpa_reply(struct iwch_ep *ep, const void *pdata, u8 plen)
         */
        skb_get(skb);
        set_arp_failure_handler(skb, arp_failure_discard);
-       skb->h.raw = skb->data;
+       skb_reset_transport_header(skb);
        len = skb->len;
        req = (struct tx_data_wr *) skb_push(skb, sizeof(*req));
        req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA));
@@ -1416,6 +1414,7 @@ static int peer_close(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
                wake_up(&ep->com.waitq);
                break;
        case FPDU_MODE:
+               start_ep_timer(ep);
                __state_set(&ep->com, CLOSING);
                attrs.next_state = IWCH_QP_STATE_CLOSING;
                iwch_modify_qp(ep->com.qp->rhp, ep->com.qp,
@@ -1426,7 +1425,6 @@ static int peer_close(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
                disconnect = 0;
                break;
        case CLOSING:
-               start_ep_timer(ep);
                __state_set(&ep->com, MORIBUND);
                disconnect = 0;
                break;
@@ -1459,7 +1457,7 @@ static int peer_close(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
 /*
  * Returns whether an ABORT_REQ_RSS message is a negative advice.
  */
-static inline int is_neg_adv_abort(unsigned int status)
+static int is_neg_adv_abort(unsigned int status)
 {
        return status == CPL_ERR_RTX_NEG_ADVICE ||
               status == CPL_ERR_PERSIST_NEG_ADVICE;
@@ -1488,8 +1486,10 @@ static int peer_abort(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
        case CONNECTING:
                break;
        case MPA_REQ_WAIT:
+               stop_ep_timer(ep);
                break;
        case MPA_REQ_SENT:
+               stop_ep_timer(ep);
                connect_reply_upcall(ep, -ECONNRESET);
                break;
        case MPA_REP_SENT:
@@ -1508,9 +1508,10 @@ static int peer_abort(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
                get_ep(&ep->com);
                break;
        case MORIBUND:
+       case CLOSING:
                stop_ep_timer(ep);
+               /*FALLTHROUGH*/
        case FPDU_MODE:
-       case CLOSING:
                if (ep->com.cm_id && ep->com.qp) {
                        attrs.next_state = IWCH_QP_STATE_ERROR;
                        ret = iwch_modify_qp(ep->com.qp->rhp,
@@ -1571,7 +1572,6 @@ static int close_con_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
        spin_lock_irqsave(&ep->com.lock, flags);
        switch (ep->com.state) {
        case CLOSING:
-               start_ep_timer(ep);
                __state_set(&ep->com, MORIBUND);
                break;
        case MORIBUND:
@@ -1587,6 +1587,8 @@ static int close_con_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
                __state_set(&ep->com, DEAD);
                release = 1;
                break;
+       case ABORTING:
+               break;
        case DEAD:
        default:
                BUG_ON(1);
@@ -1635,6 +1637,7 @@ static int ec_status(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
 
                printk(KERN_ERR MOD "%s BAD CLOSE - Aborting tid %u\n",
                       __FUNCTION__, ep->hwtid);
+               stop_ep_timer(ep);
                attrs.next_state = IWCH_QP_STATE_ERROR;
                iwch_modify_qp(ep->com.qp->rhp,
                               ep->com.qp, IWCH_QP_ATTR_NEXT_STATE,
@@ -1659,6 +1662,7 @@ static void ep_timeout(unsigned long arg)
                break;
        case MPA_REQ_WAIT:
                break;
+       case CLOSING:
        case MORIBUND:
                if (ep->com.cm_id && ep->com.qp) {
                        attrs.next_state = IWCH_QP_STATE_ERROR;
@@ -1687,12 +1691,11 @@ int iwch_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
                return -ECONNRESET;
        }
        BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
-       state_set(&ep->com, CLOSING);
        if (mpa_rev == 0)
                abort_connection(ep, NULL, GFP_KERNEL);
        else {
                err = send_mpa_reject(ep, pdata, pdata_len);
-               err = send_halfclose(ep, GFP_KERNEL);
+               err = iwch_ep_disconnect(ep, 0, GFP_KERNEL);
        }
        return 0;
 }
@@ -1957,11 +1960,11 @@ int iwch_ep_disconnect(struct iwch_ep *ep, int abrupt, gfp_t gfp)
        case MPA_REQ_RCVD:
        case MPA_REP_SENT:
        case FPDU_MODE:
+               start_ep_timer(ep);
                ep->com.state = CLOSING;
                close = 1;
                break;
        case CLOSING:
-               start_ep_timer(ep);
                ep->com.state = MORIBUND;
                close = 1;
                break;
@@ -2023,6 +2026,17 @@ static int sched(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
        return 0;
 }
 
+static int set_tcb_rpl(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
+{
+       struct cpl_set_tcb_rpl *rpl = cplhdr(skb);
+
+       if (rpl->status != CPL_ERR_NONE) {
+               printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u "
+                      "for tid %u\n", rpl->status, GET_TID(rpl));
+       }
+       return CPL_RET_BUF_DONE;
+}
+
 int __init iwch_cm_init(void)
 {
        skb_queue_head_init(&rxq);
@@ -2050,6 +2064,7 @@ int __init iwch_cm_init(void)
        t3c_handlers[CPL_ABORT_REQ_RSS] = sched;
        t3c_handlers[CPL_RDMA_TERMINATE] = sched;
        t3c_handlers[CPL_RDMA_EC_STATUS] = sched;
+       t3c_handlers[CPL_SET_TCB_RPL] = set_tcb_rpl;
 
        /*
         * These are the real handlers that are called from a