S2io: Added napi support when MSIX is enabled.

- Added napi support when MSIX is enabled.
- Moved test_msi function from s2io_open to probe function.

Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 12 insertions, 5 deletions

diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index 9a4b772f7411..4706f7f9acb6 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -706,7 +706,7 @@ struct ring_info {
         /* per-ring buffer counter */
         u32 rx_bufs_left;
 
-        #define MAX_LRO_SESSIONS        32
+#define MAX_LRO_SESSIONS       32
         struct lro lro0_n[MAX_LRO_SESSIONS];
         u8              lro;
 
@@ -725,6 +725,11 @@ struct ring_info {
         /* copy of sp->pdev pointer */
         struct pci_dev *pdev;
 
+        /* Per ring napi struct */
+        struct napi_struct napi;
+
+        unsigned long interrupt_count;
+
         /*
          *  Place holders for the virtual and physical addresses of
          *  all the Rx Blocks
@@ -841,7 +846,7 @@ struct usr_addr {
  * Structure to keep track of the MSI-X vectors and the corresponding
  * argument registered against each vector
  */
-#define MAX_REQUESTED_MSI_X     17
+#define MAX_REQUESTED_MSI_X     9
 struct s2io_msix_entry
 {
         u16 vector;
@@ -877,7 +882,6 @@ struct s2io_nic {
          */
         int pkts_to_process;
         struct net_device *dev;
-        struct napi_struct napi;
         struct mac_info mac_control;
         struct config_param config;
         struct pci_dev *pdev;
@@ -948,6 +952,7 @@ struct s2io_nic {
         */
         u8 other_fifo_idx;
 
+        struct napi_struct napi;
         /*  after blink, the adapter must be restored with original
          *  values.
          */
@@ -962,6 +967,7 @@ struct s2io_nic {
         unsigned long long start_time;
         struct vlan_group *vlgrp;
 #define MSIX_FLG                0xA5
+        int num_entries;
         struct msix_entry *entries;
         int msi_detected;
         wait_queue_head_t msi_wait;
@@ -1104,7 +1110,7 @@ static void __devexit s2io_rem_nic(struct pci_dev *pdev);
 static int init_shared_mem(struct s2io_nic *sp);
 static void free_shared_mem(struct s2io_nic *sp);
 static int init_nic(struct s2io_nic *nic);
-static void rx_intr_handler(struct ring_info *ring_data);
+static int rx_intr_handler(struct ring_info *ring_data, int budget);
 static void tx_intr_handler(struct fifo_info *fifo_data);
 static void s2io_handle_errors(void * dev_id);
 
@@ -1115,7 +1121,8 @@ static void s2io_set_multicast(struct net_device *dev);
 static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp);
 static void s2io_link(struct s2io_nic * sp, int link);
 static void s2io_reset(struct s2io_nic * sp);
-static int s2io_poll(struct napi_struct *napi, int budget);
+static int s2io_poll_msix(struct napi_struct *napi, int budget);
+static int s2io_poll_inta(struct napi_struct *napi, int budget);
 static void s2io_init_pci(struct s2io_nic * sp);
 static int do_s2io_prog_unicast(struct net_device *dev, u8 *addr);
 static void s2io_alarm_handle(unsigned long data);