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igb: replace the VF clear_to_send with a flags value

Browse source 
In order to support future features it is easiest to replace the
clear_to_send boolean with a flag value.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2009-10-27 23:46:57 +00:00 committed by David S. Miller
parent d249be5474
commit f2ca0dbe07
2 changed files with 70 additions and 60 deletions
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5
drivers/net/igb/igb.h
View file

@ -73,9 +73,12 @@ struct vf_data_storage {
u16 vf_mc_hashes[IGB_MAX_VF_MC_ENTRIES];
u16 num_vf_mc_hashes;
u16 vlans_enabled;
bool clear_to_send;
u32 flags;
unsigned long last_nack;
};
#define IGB_VF_FLAG_CTS 0x00000001 /* VF is clear to send data */
/* RX descriptor control thresholds.
* PTHRESH - MAC will consider prefetch if it has fewer than this number of
* descriptors available in its onboard memory.

125
drivers/net/igb/igb_main.c
View file

@ -125,9 +125,8 @@ static void igb_restore_vlan(struct igb_adapter *);
static void igb_rar_set_qsel(struct igb_adapter *, u8 *, u32 , u8);
static void igb_ping_all_vfs(struct igb_adapter *);
static void igb_msg_task(struct igb_adapter *);
static int igb_rcv_msg_from_vf(struct igb_adapter *, u32);
static void igb_vmm_control(struct igb_adapter *);
static int igb_set_vf_mac(struct igb_adapter *adapter, int, unsigned char *);
static int igb_set_vf_mac(struct igb_adapter *, int, unsigned char *);
static void igb_restore_vf_multicasts(struct igb_adapter *adapter);
static inline void igb_set_vmolr(struct e1000_hw *hw, int vfn)
@ -1291,10 +1290,10 @@ void igb_reset(struct igb_adapter *adapter)
if (adapter->vfs_allocated_count) {
int i;
for (i = 0 ; i < adapter->vfs_allocated_count; i++)
adapter->vf_data[i].clear_to_send = false;
adapter->vf_data[i].flags = 0;
/* ping all the active vfs to let them know we are going down */
igb_ping_all_vfs(adapter);
igb_ping_all_vfs(adapter);
/* disable transmits and receives */
wr32(E1000_VFRE, 0);
@ -4096,7 +4095,7 @@ static void igb_ping_all_vfs(struct igb_adapter *adapter)
for (i = 0 ; i < adapter->vfs_allocated_count; i++) {
ping = E1000_PF_CONTROL_MSG;
if (adapter->vf_data[i].clear_to_send)
if (adapter->vf_data[i].flags & IGB_VF_FLAG_CTS)
ping |= E1000_VT_MSGTYPE_CTS;
igb_write_mbx(hw, &ping, 1, i);
}
@ -4276,15 +4275,14 @@ static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf)
return igb_vlvf_set(adapter, vid, add, vf);
}
static inline void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf)
static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf)
{
struct e1000_hw *hw = &adapter->hw;
/* disable mailbox functionality for vf */
adapter->vf_data[vf].clear_to_send = false;
/* clear all flags */
adapter->vf_data[vf].flags = 0;
adapter->vf_data[vf].last_nack = jiffies;
/* reset offloads to defaults */
igb_set_vmolr(hw, vf);
igb_set_vmolr(&adapter->hw, vf);
/* reset vlans for device */
igb_clear_vf_vfta(adapter, vf);
@ -4296,7 +4294,18 @@ static inline void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf)
igb_set_rx_mode(adapter->netdev);
}
static inline void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf)
static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf)
{
unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses;
/* generate a new mac address as we were hotplug removed/added */
random_ether_addr(vf_mac);
/* process remaining reset events */
igb_vf_reset(adapter, vf);
}
static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf)
{
struct e1000_hw *hw = &adapter->hw;
unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses;
@ -4305,7 +4314,7 @@ static inline void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf)
u8 *addr = (u8 *)(&msgbuf[1]);
/* process all the same items cleared in a function level reset */
igb_vf_reset_event(adapter, vf);
igb_vf_reset(adapter, vf);
/* set vf mac address */
igb_rar_set_qsel(adapter, vf_mac, rar_entry, vf);
@ -4316,8 +4325,7 @@ static inline void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf)
reg = rd32(E1000_VFRE);
wr32(E1000_VFRE, reg | (1 << vf));
/* enable mailbox functionality for vf */
adapter->vf_data[vf].clear_to_send = true;
adapter->vf_data[vf].flags = IGB_VF_FLAG_CTS;
/* reply to reset with ack and vf mac address */
msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK;
@ -4327,66 +4335,45 @@ static inline void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf)
static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf)
{
unsigned char *addr = (char *)&msg[1];
int err = -1;
unsigned char *addr = (char *)&msg[1];
int err = -1;
if (is_valid_ether_addr(addr))
err = igb_set_vf_mac(adapter, vf, addr);
return err;
if (is_valid_ether_addr(addr))
err = igb_set_vf_mac(adapter, vf, addr);
return err;
}
static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf)
{
struct e1000_hw *hw = &adapter->hw;
struct vf_data_storage *vf_data = &adapter->vf_data[vf];
u32 msg = E1000_VT_MSGTYPE_NACK;
/* if device isn't clear to send it shouldn't be reading either */
if (!adapter->vf_data[vf].clear_to_send)
if (!(vf_data->flags & IGB_VF_FLAG_CTS) &&
time_after(jiffies, vf_data->last_nack + (2 * HZ))) {
igb_write_mbx(hw, &msg, 1, vf);
}
static void igb_msg_task(struct igb_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
u32 vf;
for (vf = 0; vf < adapter->vfs_allocated_count; vf++) {
/* process any reset requests */
if (!igb_check_for_rst(hw, vf)) {
adapter->vf_data[vf].clear_to_send = false;
igb_vf_reset_event(adapter, vf);
}
/* process any messages pending */
if (!igb_check_for_msg(hw, vf))
igb_rcv_msg_from_vf(adapter, vf);
/* process any acks */
if (!igb_check_for_ack(hw, vf))
igb_rcv_ack_from_vf(adapter, vf);
vf_data->last_nack = jiffies;
}
}
static int igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf)
static void igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf)
{
u32 mbx_size = E1000_VFMAILBOX_SIZE;
u32 msgbuf[mbx_size];
struct pci_dev *pdev = adapter->pdev;
u32 msgbuf[E1000_VFMAILBOX_SIZE];
struct e1000_hw *hw = &adapter->hw;
struct vf_data_storage *vf_data = &adapter->vf_data[vf];
s32 retval;
retval = igb_read_mbx(hw, msgbuf, mbx_size, vf);
retval = igb_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf);
if (retval)
dev_err(&adapter->pdev->dev,
"Error receiving message from VF\n");
dev_err(&pdev->dev, "Error receiving message from VF\n");
/* this is a message we already processed, do nothing */
if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK))
return retval;
return;
/*
* until the vf completes a reset it should not be
@ -4395,14 +4382,16 @@ static int igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf)
if (msgbuf[0] == E1000_VF_RESET) {
igb_vf_reset_msg(adapter, vf);
return retval;
return;
}
if (!adapter->vf_data[vf].clear_to_send) {
msgbuf[0] |= E1000_VT_MSGTYPE_NACK;
igb_write_mbx(hw, msgbuf, 1, vf);
return retval;
if (!(vf_data->flags & IGB_VF_FLAG_CTS)) {
msgbuf[0] = E1000_VT_MSGTYPE_NACK;
if (time_after(jiffies, vf_data->last_nack + (2 * HZ))) {
igb_write_mbx(hw, msgbuf, 1, vf);
vf_data->last_nack = jiffies;
}
return;
}
switch ((msgbuf[0] & 0xFFFF)) {
@ -4433,8 +4422,26 @@ static int igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf)
msgbuf[0] |= E1000_VT_MSGTYPE_CTS;
igb_write_mbx(hw, msgbuf, 1, vf);
}
return retval;
static void igb_msg_task(struct igb_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
u32 vf;
for (vf = 0; vf < adapter->vfs_allocated_count; vf++) {
/* process any reset requests */
if (!igb_check_for_rst(hw, vf))
igb_vf_reset_event(adapter, vf);
/* process any messages pending */
if (!igb_check_for_msg(hw, vf))
igb_rcv_msg_from_vf(adapter, vf);
/* process any acks */
if (!igb_check_for_ack(hw, vf))
igb_rcv_ack_from_vf(adapter, vf);
}
}
/**