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path: root/drivers/net/cxgb3/cxgb3_offload.c
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Diffstat (limited to 'drivers/net/cxgb3/cxgb3_offload.c')
-rw-r--r--drivers/net/cxgb3/cxgb3_offload.c96
1 files changed, 61 insertions, 35 deletions
diff --git a/drivers/net/cxgb3/cxgb3_offload.c b/drivers/net/cxgb3/cxgb3_offload.c
index c6b726643185..ebcf35e4cf5b 100644
--- a/drivers/net/cxgb3/cxgb3_offload.c
+++ b/drivers/net/cxgb3/cxgb3_offload.c
@@ -1,6 +1,5 @@
/*
* Copyright (c) 2006-2007 Chelsio, Inc. All rights reserved.
- * Copyright (c) 2006-2007 Open Grid Computing, Inc. All rights reserved.
*
* 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
@@ -161,14 +160,16 @@ static struct net_device *get_iff_from_mac(struct adapter *adapter,
int i;
for_each_port(adapter, i) {
- const struct vlan_group *grp;
+ struct vlan_group *grp;
struct net_device *dev = adapter->port[i];
const struct port_info *p = netdev_priv(dev);
if (!memcmp(dev->dev_addr, mac, ETH_ALEN)) {
if (vlan && vlan != VLAN_VID_MASK) {
grp = p->vlan_grp;
- dev = grp ? grp->vlan_devices[vlan] : NULL;
+ dev = NULL;
+ if (grp)
+ dev = vlan_group_get_device(grp, vlan);
} else
while (dev->master)
dev = dev->master;
@@ -507,6 +508,7 @@ void cxgb3_queue_tid_release(struct t3cdev *tdev, unsigned int tid)
spin_lock_bh(&td->tid_release_lock);
p->ctx = (void *)td->tid_release_list;
+ p->client = NULL;
td->tid_release_list = p;
if (!p->ctx)
schedule_work(&td->tid_release_task);
@@ -552,7 +554,9 @@ int cxgb3_alloc_atid(struct t3cdev *tdev, struct cxgb3_client *client,
struct tid_info *t = &(T3C_DATA(tdev))->tid_maps;
spin_lock_bh(&t->atid_lock);
- if (t->afree) {
+ if (t->afree &&
+ t->atids_in_use + atomic_read(&t->tids_in_use) + MC5_MIN_TIDS <=
+ t->ntids) {
union active_open_entry *p = t->afree;
atid = (p - t->atid_tab) + t->atid_base;
@@ -620,7 +624,8 @@ static int do_act_open_rpl(struct t3cdev *dev, struct sk_buff *skb)
struct t3c_tid_entry *t3c_tid;
t3c_tid = lookup_atid(&(T3C_DATA(dev))->tid_maps, atid);
- if (t3c_tid->ctx && t3c_tid->client && t3c_tid->client->handlers &&
+ if (t3c_tid && t3c_tid->ctx && t3c_tid->client &&
+ t3c_tid->client->handlers &&
t3c_tid->client->handlers[CPL_ACT_OPEN_RPL]) {
return t3c_tid->client->handlers[CPL_ACT_OPEN_RPL] (dev, skb,
t3c_tid->
@@ -639,7 +644,7 @@ static int do_stid_rpl(struct t3cdev *dev, struct sk_buff *skb)
struct t3c_tid_entry *t3c_tid;
t3c_tid = lookup_stid(&(T3C_DATA(dev))->tid_maps, stid);
- if (t3c_tid->ctx && t3c_tid->client->handlers &&
+ if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
t3c_tid->client->handlers[p->opcode]) {
return t3c_tid->client->handlers[p->opcode] (dev, skb,
t3c_tid->ctx);
@@ -657,7 +662,7 @@ static int do_hwtid_rpl(struct t3cdev *dev, struct sk_buff *skb)
struct t3c_tid_entry *t3c_tid;
t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
- if (t3c_tid->ctx && t3c_tid->client->handlers &&
+ if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
t3c_tid->client->handlers[p->opcode]) {
return t3c_tid->client->handlers[p->opcode]
(dev, skb, t3c_tid->ctx);
@@ -686,6 +691,28 @@ static int do_cr(struct t3cdev *dev, struct sk_buff *skb)
}
}
+/*
+ * Returns an sk_buff for a reply CPL message of size len. If the input
+ * sk_buff has no other users it is trimmed and reused, otherwise a new buffer
+ * is allocated. The input skb must be of size at least len. Note that this
+ * operation does not destroy the original skb data even if it decides to reuse
+ * the buffer.
+ */
+static struct sk_buff *cxgb3_get_cpl_reply_skb(struct sk_buff *skb, size_t len,
+ int gfp)
+{
+ if (likely(!skb_cloned(skb))) {
+ BUG_ON(skb->len < len);
+ __skb_trim(skb, len);
+ skb_get(skb);
+ } else {
+ skb = alloc_skb(len, gfp);
+ if (skb)
+ __skb_put(skb, len);
+ }
+ return skb;
+}
+
static int do_abort_req_rss(struct t3cdev *dev, struct sk_buff *skb)
{
union opcode_tid *p = cplhdr(skb);
@@ -693,30 +720,39 @@ static int do_abort_req_rss(struct t3cdev *dev, struct sk_buff *skb)
struct t3c_tid_entry *t3c_tid;
t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
- if (t3c_tid->ctx && t3c_tid->client->handlers &&
+ if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
t3c_tid->client->handlers[p->opcode]) {
return t3c_tid->client->handlers[p->opcode]
(dev, skb, t3c_tid->ctx);
} else {
struct cpl_abort_req_rss *req = cplhdr(skb);
struct cpl_abort_rpl *rpl;
+ struct sk_buff *reply_skb;
+ unsigned int tid = GET_TID(req);
+ u8 cmd = req->status;
+
+ if (req->status == CPL_ERR_RTX_NEG_ADVICE ||
+ req->status == CPL_ERR_PERSIST_NEG_ADVICE)
+ goto out;
- struct sk_buff *skb =
- alloc_skb(sizeof(struct cpl_abort_rpl), GFP_ATOMIC);
- if (!skb) {
+ reply_skb = cxgb3_get_cpl_reply_skb(skb,
+ sizeof(struct
+ cpl_abort_rpl),
+ GFP_ATOMIC);
+
+ if (!reply_skb) {
printk("do_abort_req_rss: couldn't get skb!\n");
goto out;
}
- skb->priority = CPL_PRIORITY_DATA;
- __skb_put(skb, sizeof(struct cpl_abort_rpl));
- rpl = cplhdr(skb);
+ reply_skb->priority = CPL_PRIORITY_DATA;
+ __skb_put(reply_skb, sizeof(struct cpl_abort_rpl));
+ rpl = cplhdr(reply_skb);
rpl->wr.wr_hi =
htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL));
- rpl->wr.wr_lo = htonl(V_WR_TID(GET_TID(req)));
- OPCODE_TID(rpl) =
- htonl(MK_OPCODE_TID(CPL_ABORT_RPL, GET_TID(req)));
- rpl->cmd = req->status;
- cxgb3_ofld_send(dev, skb);
+ rpl->wr.wr_lo = htonl(V_WR_TID(tid));
+ OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, tid));
+ rpl->cmd = cmd;
+ cxgb3_ofld_send(dev, reply_skb);
out:
return CPL_RET_BUF_DONE;
}
@@ -729,7 +765,7 @@ static int do_act_establish(struct t3cdev *dev, struct sk_buff *skb)
struct t3c_tid_entry *t3c_tid;
t3c_tid = lookup_atid(&(T3C_DATA(dev))->tid_maps, atid);
- if (t3c_tid->ctx && t3c_tid->client->handlers &&
+ if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
t3c_tid->client->handlers[CPL_ACT_ESTABLISH]) {
return t3c_tid->client->handlers[CPL_ACT_ESTABLISH]
(dev, skb, t3c_tid->ctx);
@@ -740,17 +776,6 @@ static int do_act_establish(struct t3cdev *dev, struct sk_buff *skb)
}
}
-static int do_set_tcb_rpl(struct t3cdev *dev, struct sk_buff *skb)
-{
- struct cpl_set_tcb_rpl *rpl = cplhdr(skb);
-
- if (rpl->status != CPL_ERR_NONE)
- printk(KERN_ERR
- "Unexpected SET_TCB_RPL status %u for tid %u\n",
- rpl->status, GET_TID(rpl));
- return CPL_RET_BUF_DONE;
-}
-
static int do_trace(struct t3cdev *dev, struct sk_buff *skb)
{
struct cpl_trace_pkt *p = cplhdr(skb);
@@ -758,7 +783,7 @@ static int do_trace(struct t3cdev *dev, struct sk_buff *skb)
skb->protocol = htons(0xffff);
skb->dev = dev->lldev;
skb_pull(skb, sizeof(*p));
- skb->mac.raw = skb->data;
+ skb_reset_mac_header(skb);
netif_receive_skb(skb);
return 0;
}
@@ -770,7 +795,7 @@ static int do_term(struct t3cdev *dev, struct sk_buff *skb)
struct t3c_tid_entry *t3c_tid;
t3c_tid = lookup_tid(&(T3C_DATA(dev))->tid_maps, hwtid);
- if (t3c_tid->ctx && t3c_tid->client->handlers &&
+ if (t3c_tid && t3c_tid->ctx && t3c_tid->client->handlers &&
t3c_tid->client->handlers[opcode]) {
return t3c_tid->client->handlers[opcode] (dev, skb,
t3c_tid->ctx);
@@ -969,7 +994,7 @@ void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
for (tid = 0; tid < ti->ntids; tid++) {
te = lookup_tid(ti, tid);
BUG_ON(!te);
- if (te->ctx && te->client && te->client->redirect) {
+ if (te && te->ctx && te->client && te->client->redirect) {
update_tcb = te->client->redirect(te->ctx, old, new, e);
if (update_tcb) {
l2t_hold(L2DATA(tdev), e);
@@ -1212,7 +1237,8 @@ void __init cxgb3_offload_init(void)
t3_register_cpl_handler(CPL_CLOSE_CON_RPL, do_hwtid_rpl);
t3_register_cpl_handler(CPL_ABORT_REQ_RSS, do_abort_req_rss);
t3_register_cpl_handler(CPL_ACT_ESTABLISH, do_act_establish);
- t3_register_cpl_handler(CPL_SET_TCB_RPL, do_set_tcb_rpl);
+ t3_register_cpl_handler(CPL_SET_TCB_RPL, do_hwtid_rpl);
+ t3_register_cpl_handler(CPL_GET_TCB_RPL, do_hwtid_rpl);
t3_register_cpl_handler(CPL_RDMA_TERMINATE, do_term);
t3_register_cpl_handler(CPL_RDMA_EC_STATUS, do_hwtid_rpl);
t3_register_cpl_handler(CPL_TRACE_PKT, do_trace);
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