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authorSathya Perla <sathyap@serverengines.com>2009-06-18 02:10:27 +0200
committerDavid S. Miller <davem@davemloft.net>2009-06-19 09:18:42 +0200
commita8f447bda3ee00e3a3ab080c48db40078ea65221 (patch)
tree7b164e3dd0dee5da5229462c668c98a6297517a3 /drivers/net/benet/be_cmds.c
parentbe2net: cleanup multicast_set cmd to avoid mc_list copy (diff)
downloadlinux-a8f447bda3ee00e3a3ab080c48db40078ea65221.tar.xz
linux-a8f447bda3ee00e3a3ab080c48db40078ea65221.zip
be2net: receive asynchronous link status notifications from BE
Rcv and process ansync link status notifications from BE instead of polling for link status in the be_worker thread. Signed-off-by: Sathya Perla <sathyap@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/benet/be_cmds.c')
-rw-r--r--drivers/net/benet/be_cmds.c34
1 files changed, 27 insertions, 7 deletions
diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c
index 4a2e1f518f78..583517ed56f0 100644
--- a/drivers/net/benet/be_cmds.c
+++ b/drivers/net/benet/be_cmds.c
@@ -69,6 +69,20 @@ static int be_mcc_compl_process(struct be_ctrl_info *ctrl,
return 0;
}
+/* Link state evt is a string of bytes; no need for endian swapping */
+static void be_async_link_state_process(struct be_ctrl_info *ctrl,
+ struct be_async_event_link_state *evt)
+{
+ ctrl->async_cb(ctrl->adapter_ctxt,
+ evt->port_link_status == ASYNC_EVENT_LINK_UP ? true : false);
+}
+
+static inline bool is_link_state_evt(u32 trailer)
+{
+ return (((trailer >> ASYNC_TRAILER_EVENT_CODE_SHIFT) &
+ ASYNC_TRAILER_EVENT_CODE_MASK) ==
+ ASYNC_EVENT_CODE_LINK_STATE);
+}
static struct be_mcc_cq_entry *be_mcc_compl_get(struct be_ctrl_info *ctrl)
{
@@ -89,7 +103,14 @@ void be_process_mcc(struct be_ctrl_info *ctrl)
spin_lock_bh(&ctrl->mcc_cq_lock);
while ((compl = be_mcc_compl_get(ctrl))) {
- if (!(compl->flags & CQE_FLAGS_ASYNC_MASK)) {
+ if (compl->flags & CQE_FLAGS_ASYNC_MASK) {
+ /* Interpret flags as an async trailer */
+ BUG_ON(!is_link_state_evt(compl->flags));
+
+ /* Interpret compl as a async link evt */
+ be_async_link_state_process(ctrl,
+ (struct be_async_event_link_state *) compl);
+ } else {
be_mcc_compl_process(ctrl, compl);
atomic_dec(&ctrl->mcc_obj.q.used);
}
@@ -786,13 +807,15 @@ int be_cmd_get_stats(struct be_ctrl_info *ctrl, struct be_dma_mem *nonemb_cmd)
}
int be_cmd_link_status_query(struct be_ctrl_info *ctrl,
- struct be_link_info *link)
+ bool *link_up)
{
struct be_mcc_wrb *wrb = wrb_from_mbox(&ctrl->mbox_mem);
struct be_cmd_req_link_status *req = embedded_payload(wrb);
int status;
spin_lock(&ctrl->mbox_lock);
+
+ *link_up = false;
memset(wrb, 0, sizeof(*wrb));
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
@@ -803,11 +826,8 @@ int be_cmd_link_status_query(struct be_ctrl_info *ctrl,
status = be_mbox_db_ring(ctrl);
if (!status) {
struct be_cmd_resp_link_status *resp = embedded_payload(wrb);
- link->speed = resp->mac_speed;
- link->duplex = resp->mac_duplex;
- link->fault = resp->mac_fault;
- } else {
- link->speed = PHY_LINK_SPEED_ZERO;
+ if (resp->mac_speed != PHY_LINK_SPEED_ZERO)
+ *link_up = true;
}
spin_unlock(&ctrl->mbox_lock);