From: Ajit Khaparde Date: Wed, 10 Feb 2016 17:15:53 +0000 (+0530) Subject: be2net: Request RSS capability of Rx interface depending on number of Rx rings X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=622190669403fb7a7557a8b618e57c0a3f703056;p=linux-beck.git be2net: Request RSS capability of Rx interface depending on number of Rx rings Currently we request RSS capability even if a single Rx ring is created. As a result in few cases we unnecessarily consume an RSS capable interface which is a limited resource in the chip. This patch enables RSS on an interface only if more than one Rx ring is created. Signed-off-by: Ajit Khaparde Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c index 7d51d4733890..33cbbde218be 100644 --- a/drivers/net/ethernet/emulex/benet/be_cmds.c +++ b/drivers/net/ethernet/emulex/benet/be_cmds.c @@ -1513,34 +1513,25 @@ int be_cmd_if_create(struct be_adapter *adapter, u32 cap_flags, u32 en_flags, return status; } -/* Uses MCCQ */ +/* Uses MCCQ if available else MBOX */ int be_cmd_if_destroy(struct be_adapter *adapter, int interface_id, u32 domain) { - struct be_mcc_wrb *wrb; + struct be_mcc_wrb wrb = {0}; struct be_cmd_req_if_destroy *req; int status; if (interface_id == -1) return 0; - spin_lock_bh(&adapter->mcc_lock); - - wrb = wrb_from_mccq(adapter); - if (!wrb) { - status = -EBUSY; - goto err; - } - req = embedded_payload(wrb); + req = embedded_payload(&wrb); be_wrb_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON, OPCODE_COMMON_NTWK_INTERFACE_DESTROY, - sizeof(*req), wrb, NULL); + sizeof(*req), &wrb, NULL); req->hdr.domain = domain; req->interface_id = cpu_to_le32(interface_id); - status = be_mcc_notify_wait(adapter); -err: - spin_unlock_bh(&adapter->mcc_lock); + status = be_cmd_notify_wait(adapter, &wrb); return status; } diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 9c1fc9dcea25..e4fc87455e00 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -3365,6 +3365,7 @@ done: static void be_rx_qs_destroy(struct be_adapter *adapter) { + struct rss_info *rss = &adapter->rss_info; struct be_queue_info *q; struct be_rx_obj *rxo; int i; @@ -3391,6 +3392,12 @@ static void be_rx_qs_destroy(struct be_adapter *adapter) } be_queue_free(adapter, q); } + + if (rss->rss_flags) { + rss->rss_flags = RSS_ENABLE_NONE; + be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags, + 128, rss->rss_hkey); + } } static void be_disable_if_filters(struct be_adapter *adapter) @@ -3511,20 +3518,21 @@ static int be_rx_qs_create(struct be_adapter *adapter) if (!BEx_chip(adapter)) rss->rss_flags |= RSS_ENABLE_UDP_IPV4 | RSS_ENABLE_UDP_IPV6; + + netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN); + rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags, + RSS_INDIR_TABLE_LEN, rss_key); + if (rc) { + rss->rss_flags = RSS_ENABLE_NONE; + return rc; + } + + memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN); } else { /* Disable RSS, if only default RX Q is created */ rss->rss_flags = RSS_ENABLE_NONE; } - netdev_rss_key_fill(rss_key, RSS_HASH_KEY_LEN); - rc = be_cmd_rss_config(adapter, rss->rsstable, rss->rss_flags, - RSS_INDIR_TABLE_LEN, rss_key); - if (rc) { - rss->rss_flags = RSS_ENABLE_NONE; - return rc; - } - - memcpy(rss->rss_hkey, rss_key, RSS_HASH_KEY_LEN); /* Post 1 less than RXQ-len to avoid head being equal to tail, * which is a queue empty condition @@ -4306,6 +4314,23 @@ err: return status; } +static int be_if_create(struct be_adapter *adapter) +{ + u32 en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS; + u32 cap_flags = be_if_cap_flags(adapter); + int status; + + if (adapter->cfg_num_qs == 1) + cap_flags &= ~(BE_IF_FLAGS_DEFQ_RSS | BE_IF_FLAGS_RSS); + + en_flags &= cap_flags; + /* will enable all the needed filter flags in be_open() */ + status = be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags, + &adapter->if_handle, 0); + + return status; +} + int be_update_queues(struct be_adapter *adapter) { struct net_device *netdev = adapter->netdev; @@ -4323,6 +4348,9 @@ int be_update_queues(struct be_adapter *adapter) be_msix_disable(adapter); be_clear_queues(adapter); + status = be_cmd_if_destroy(adapter, adapter->if_handle, 0); + if (status) + return status; if (!msix_enabled(adapter)) { status = be_msix_enable(adapter); @@ -4330,6 +4358,10 @@ int be_update_queues(struct be_adapter *adapter) return status; } + status = be_if_create(adapter); + if (status) + return status; + status = be_setup_queues(adapter); if (status) return status; @@ -4394,7 +4426,6 @@ static int be_func_init(struct be_adapter *adapter) static int be_setup(struct be_adapter *adapter) { struct device *dev = &adapter->pdev->dev; - u32 en_flags; int status; status = be_func_init(adapter); @@ -4427,10 +4458,7 @@ static int be_setup(struct be_adapter *adapter) goto err; /* will enable all the needed filter flags in be_open() */ - en_flags = BE_IF_FLAGS_RSS | BE_IF_FLAGS_DEFQ_RSS; - en_flags = en_flags & be_if_cap_flags(adapter); - status = be_cmd_if_create(adapter, be_if_cap_flags(adapter), en_flags, - &adapter->if_handle, 0); + status = be_if_create(adapter); if (status) goto err; @@ -4803,7 +4831,7 @@ static void be_netdev_init(struct net_device *netdev) netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX; - if (be_multi_rxq(adapter)) + if ((be_if_cap_flags(adapter) & BE_IF_FLAGS_RSS)) netdev->hw_features |= NETIF_F_RXHASH; netdev->features |= netdev->hw_features |