diff options
| author |   Dhananjay Phadke <dhananjay@netxen.com> | 2009-04-07 22:50:43 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2009-04-08 15:58:28 -0700 |
| commit | 71dcddbdd35487eb931aa8aab28a2df474008754 (patch) | |
| tree | 64b1b1aca84e118edea9865a350aed93e0a8b813 /drivers/net/netxen/netxen_nic_main.c | |
| parent | netxen: async link event handling (diff) | |
| download | linux-dev-71dcddbdd35487eb931aa8aab28a2df474008754.tar.xz linux-dev-71dcddbdd35487eb931aa8aab28a2df474008754.zip | |
netxen: allocate status rings dynamically
This reduces netxen_adapter footprint when rss (msi-x) is disabled.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/netxen/netxen_nic_main.c')
| -rw-r--r-- | drivers/net/netxen/netxen_nic_main.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c index bd93296be4dd..cbd47ae694ba 100644 --- a/drivers/net/netxen/netxen_nic_main.c +++ b/drivers/net/netxen/netxen_nic_main.c @@ -153,7 +153,24 @@ static inline void netxen_nic_enable_int(struct nx_host_sds_ring *sds_ring) adapter->legacy_intr.tgt_mask_reg, 0xfbff); } +static int +netxen_alloc_sds_rings(struct netxen_recv_context *recv_ctx, int count) +{ + int size = sizeof(struct nx_host_sds_ring) * count; + + recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL); + + return (recv_ctx->sds_rings == NULL); +} + static void +netxen_free_sds_rings(struct netxen_recv_context *recv_ctx) +{ + if (recv_ctx->sds_rings != NULL) + kfree(recv_ctx->sds_rings); +} + +static int netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev) { int ring; @@ -165,11 +182,16 @@ netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev) else adapter->max_sds_rings = 1; + if (netxen_alloc_sds_rings(recv_ctx, adapter->max_sds_rings)) + return 1; + for (ring = 0; ring < adapter->max_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; netif_napi_add(netdev, &sds_ring->napi, netxen_nic_poll, NETXEN_NETDEV_WEIGHT); } + + return 0; } static void @@ -1028,7 +1050,8 @@ netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) netdev->irq = adapter->msix_entries[0].vector; - netxen_napi_add(adapter, netdev); + if (netxen_napi_add(adapter, netdev)) + goto err_out_disable_msi; init_timer(&adapter->watchdog_timer); adapter->watchdog_timer.function = &netxen_watchdog; @@ -1110,6 +1133,7 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev) netxen_free_adapter_offload(adapter); netxen_teardown_intr(adapter); + netxen_free_sds_rings(&adapter->recv_ctx); netxen_cleanup_pci_map(adapter); |