{"id":818167,"url":"http://patchwork.ozlabs.org/api/patches/818167/?format=json","web_url":"http://patchwork.ozlabs.org/project/netdev/patch/1506335021-32024-6-git-send-email-simon.horman@netronome.com/","project":{"id":7,"url":"http://patchwork.ozlabs.org/api/projects/7/?format=json","name":"Linux network development","link_name":"netdev","list_id":"netdev.vger.kernel.org","list_email":"netdev@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<1506335021-32024-6-git-send-email-simon.horman@netronome.com>","list_archive_url":null,"date":"2017-09-25T10:23:39","name":"[net-next,5/7] nfp: offload vxlan IPv4 endpoints of flower rules","commit_ref":null,"pull_url":null,"state":"accepted","archived":true,"hash":"5c3fb969b226ae807bd914463f73370a5d240341","submitter":{"id":64714,"url":"http://patchwork.ozlabs.org/api/people/64714/?format=json","name":"Simon Horman","email":"simon.horman@netronome.com"},"delegate":{"id":34,"url":"http://patchwork.ozlabs.org/api/users/34/?format=json","username":"davem","first_name":"David","last_name":"Miller","email":"davem@davemloft.net"},"mbox":"http://patchwork.ozlabs.org/project/netdev/patch/1506335021-32024-6-git-send-email-simon.horman@netronome.com/mbox/","series":[{"id":4932,"url":"http://patchwork.ozlabs.org/api/series/4932/?format=json","web_url":"http://patchwork.ozlabs.org/project/netdev/list/?series=4932","date":"2017-09-25T10:23:34","name":"nfp: flower vxlan tunnel offload","version":1,"mbox":"http://patchwork.ozlabs.org/series/4932/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/818167/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/818167/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"patchwork-incoming@ozlabs.org","Delivered-To":"patchwork-incoming@ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; 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\n\tMon, 25 Sep 2017 03:24:05 -0700 (PDT)","From":"Simon Horman ","To":"David Miller ,\n\tJakub Kicinski ","Cc":"netdev@vger.kernel.org, oss-drivers@netronome.com,\n\tJohn Hurley ,\n\tSimon Horman ","Subject":"[PATCH net-next 5/7] nfp: offload vxlan IPv4 endpoints of flower\n\trules","Date":"Mon, 25 Sep 2017 12:23:39 +0200","Message-Id":"<1506335021-32024-6-git-send-email-simon.horman@netronome.com>","X-Mailer":"git-send-email 2.1.4","In-Reply-To":"<1506335021-32024-1-git-send-email-simon.horman@netronome.com>","References":"<1506335021-32024-1-git-send-email-simon.horman@netronome.com>","Sender":"netdev-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"netdev@vger.kernel.org"},"content":"From: John Hurley \n\nMaintain a list of IPv4 addresses used as the tunnel destination IP match\nfields in currently active flower rules. Offload the entire list of\nNFP_FL_IPV4_ADDRS_MAX (even if some are unused) when new IPs are added or\nremoved. The NFP should only be aware of tunnel end points that are\ncurrently used by rules on the device\n\nSigned-off-by: John Hurley \nReviewed-by: Simon Horman \nSigned-off-by: Simon Horman \n---\n drivers/net/ethernet/netronome/nfp/flower/cmsg.h | 1 +\n drivers/net/ethernet/netronome/nfp/flower/main.h | 7 ++\n drivers/net/ethernet/netronome/nfp/flower/match.c | 14 ++-\n .../net/ethernet/netronome/nfp/flower/offload.c | 4 +\n .../ethernet/netronome/nfp/flower/tunnel_conf.c | 120 +++++++++++++++++++++\n 5 files changed, 143 insertions(+), 3 deletions(-)","diff":"diff --git a/drivers/net/ethernet/netronome/nfp/flower/cmsg.h b/drivers/net/ethernet/netronome/nfp/flower/cmsg.h\nindex dc248193c996..6540bb1ceefb 100644\n--- a/drivers/net/ethernet/netronome/nfp/flower/cmsg.h\n+++ b/drivers/net/ethernet/netronome/nfp/flower/cmsg.h\n@@ -318,6 +318,7 @@ enum nfp_flower_cmsg_type_port {\n \tNFP_FLOWER_CMSG_TYPE_MAC_REPR =\t\t7,\n \tNFP_FLOWER_CMSG_TYPE_PORT_MOD =\t\t8,\n \tNFP_FLOWER_CMSG_TYPE_TUN_MAC =\t\t11,\n+\tNFP_FLOWER_CMSG_TYPE_TUN_IPS =\t\t14,\n \tNFP_FLOWER_CMSG_TYPE_FLOW_STATS =\t15,\n \tNFP_FLOWER_CMSG_TYPE_PORT_ECHO =\t16,\n \tNFP_FLOWER_CMSG_TYPE_MAX =\t\t32,\ndiff --git a/drivers/net/ethernet/netronome/nfp/flower/main.h b/drivers/net/ethernet/netronome/nfp/flower/main.h\nindex 9de375acc254..53306af6cfe8 100644\n--- a/drivers/net/ethernet/netronome/nfp/flower/main.h\n+++ b/drivers/net/ethernet/netronome/nfp/flower/main.h\n@@ -86,8 +86,10 @@ struct nfp_fl_stats_id {\n * @cmsg_skbs:\t\tList of skbs for control message processing\n * @nfp_mac_off_list:\tList of MAC addresses to offload\n * @nfp_mac_index_list:\tList of unique 8-bit indexes for non NFP netdevs\n+ * @nfp_ipv4_off_list:\tList of IPv4 addresses to offload\n * @nfp_mac_off_lock:\tLock for the MAC address list\n * @nfp_mac_index_lock:\tLock for the MAC index list\n+ * @nfp_ipv4_off_lock:\tLock for the IPv4 address list\n * @nfp_mac_off_ids:\tIDA to manage id assignment for offloaded macs\n * @nfp_mac_off_count:\tNumber of MACs in address list\n * @nfp_tun_mac_nb:\tNotifier to monitor link state\n@@ -105,8 +107,10 @@ struct nfp_flower_priv {\n \tstruct sk_buff_head cmsg_skbs;\n \tstruct list_head nfp_mac_off_list;\n \tstruct list_head nfp_mac_index_list;\n+\tstruct list_head nfp_ipv4_off_list;\n \tstruct mutex nfp_mac_off_lock;\n \tstruct mutex nfp_mac_index_lock;\n+\tstruct mutex nfp_ipv4_off_lock;\n \tstruct ida nfp_mac_off_ids;\n \tint nfp_mac_off_count;\n \tstruct notifier_block nfp_tun_mac_nb;\n@@ -142,6 +146,7 @@ struct nfp_fl_payload {\n \tstruct rcu_head rcu;\n \tspinlock_t lock; /* lock stats */\n \tstruct nfp_fl_stats stats;\n+\t__be32 nfp_tun_ipv4_addr;\n \tchar *unmasked_data;\n \tchar *mask_data;\n \tchar *action_data;\n@@ -182,5 +187,7 @@ void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb);\n int nfp_tunnel_config_start(struct nfp_app *app);\n void nfp_tunnel_config_stop(struct nfp_app *app);\n void nfp_tunnel_write_macs(struct nfp_app *app);\n+void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4);\n+void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4);\n \n #endif\ndiff --git a/drivers/net/ethernet/netronome/nfp/flower/match.c b/drivers/net/ethernet/netronome/nfp/flower/match.c\nindex cb3ff6c126e8..865a815ab92a 100644\n--- a/drivers/net/ethernet/netronome/nfp/flower/match.c\n+++ b/drivers/net/ethernet/netronome/nfp/flower/match.c\n@@ -195,7 +195,7 @@ nfp_flower_compile_ipv6(struct nfp_flower_ipv6 *frame,\n static void\n nfp_flower_compile_vxlan(struct nfp_flower_vxlan *frame,\n \t\t\t struct tc_cls_flower_offload *flow,\n-\t\t\t bool mask_version)\n+\t\t\t bool mask_version, __be32 *tun_dst)\n {\n \tstruct fl_flow_key *target = mask_version ? flow->mask : flow->key;\n \tstruct flow_dissector_key_ipv4_addrs *vxlan_ips;\n@@ -223,6 +223,7 @@ nfp_flower_compile_vxlan(struct nfp_flower_vxlan *frame,\n \t\t\t\t\t target);\n \t\tframe->ip_src = vxlan_ips->src;\n \t\tframe->ip_dst = vxlan_ips->dst;\n+\t\t*tun_dst = vxlan_ips->dst;\n \t}\n }\n \n@@ -232,6 +233,7 @@ int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow,\n \t\t\t\t struct nfp_fl_payload *nfp_flow)\n {\n \tenum nfp_flower_tun_type tun_type = NFP_FL_TUNNEL_NONE;\n+\t__be32 tun_dst, tun_dst_mask = 0;\n \tstruct nfp_repr *netdev_repr;\n \tint err;\n \tu8 *ext;\n@@ -336,10 +338,10 @@ int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow,\n \tif (key_ls->key_layer & NFP_FLOWER_LAYER_VXLAN) {\n \t\t/* Populate Exact VXLAN Data. */\n \t\tnfp_flower_compile_vxlan((struct nfp_flower_vxlan *)ext,\n-\t\t\t\t\t flow, false);\n+\t\t\t\t\t flow, false, &tun_dst);\n \t\t/* Populate Mask VXLAN Data. */\n \t\tnfp_flower_compile_vxlan((struct nfp_flower_vxlan *)msk,\n-\t\t\t\t\t flow, true);\n+\t\t\t\t\t flow, true, &tun_dst_mask);\n \t\text += sizeof(struct nfp_flower_vxlan);\n \t\tmsk += sizeof(struct nfp_flower_vxlan);\n \n@@ -347,6 +349,12 @@ int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow,\n \t\tif (nfp_netdev_is_nfp_repr(netdev)) {\n \t\t\tnetdev_repr = netdev_priv(netdev);\n \t\t\tnfp_tunnel_write_macs(netdev_repr->app);\n+\n+\t\t\t/* Store the tunnel destination in the rule data.\n+\t\t\t * This must be present and be an exact match.\n+\t\t\t */\n+\t\t\tnfp_flow->nfp_tun_ipv4_addr = tun_dst;\n+\t\t\tnfp_tunnel_add_ipv4_off(netdev_repr->app, tun_dst);\n \t\t}\n \t}\n \ndiff --git a/drivers/net/ethernet/netronome/nfp/flower/offload.c b/drivers/net/ethernet/netronome/nfp/flower/offload.c\nindex 637372ba8f55..3d9537ebdea4 100644\n--- a/drivers/net/ethernet/netronome/nfp/flower/offload.c\n+++ b/drivers/net/ethernet/netronome/nfp/flower/offload.c\n@@ -306,6 +306,7 @@ nfp_flower_allocate_new(struct nfp_fl_key_ls *key_layer)\n \tif (!flow_pay->action_data)\n \t\tgoto err_free_mask;\n \n+\tflow_pay->nfp_tun_ipv4_addr = 0;\n \tflow_pay->meta.flags = 0;\n \tspin_lock_init(&flow_pay->lock);\n \n@@ -415,6 +416,9 @@ nfp_flower_del_offload(struct nfp_app *app, struct net_device *netdev,\n \tif (err)\n \t\tgoto err_free_flow;\n \n+\tif (nfp_flow->nfp_tun_ipv4_addr)\n+\t\tnfp_tunnel_del_ipv4_off(app, nfp_flow->nfp_tun_ipv4_addr);\n+\n \terr = nfp_flower_xmit_flow(netdev, nfp_flow,\n \t\t\t\t NFP_FLOWER_CMSG_TYPE_FLOW_DEL);\n \tif (err)\ndiff --git a/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c b/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c\nindex 34be85803020..185505140f5e 100644\n--- a/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c\n+++ b/drivers/net/ethernet/netronome/nfp/flower/tunnel_conf.c\n@@ -32,6 +32,7 @@\n */\n \n #include \n+#include \n #include \n #include \n \n@@ -40,6 +41,30 @@\n #include \"../nfp_net_repr.h\"\n #include \"../nfp_net.h\"\n \n+#define NFP_FL_IPV4_ADDRS_MAX 32\n+\n+/**\n+ * struct nfp_tun_ipv4_addr - set the IP address list on the NFP\n+ * @count:\tnumber of IPs populated in the array\n+ * @ipv4_addr:\tarray of IPV4_ADDRS_MAX 32 bit IPv4 addresses\n+ */\n+struct nfp_tun_ipv4_addr {\n+\t__be32 count;\n+\t__be32 ipv4_addr[NFP_FL_IPV4_ADDRS_MAX];\n+};\n+\n+/**\n+ * struct nfp_ipv4_addr_entry - cached IPv4 addresses\n+ * @ipv4_addr:\tIP address\n+ * @ref_count:\tnumber of rules currently using this IP\n+ * @list:\tlist pointer\n+ */\n+struct nfp_ipv4_addr_entry {\n+\t__be32 ipv4_addr;\n+\tint ref_count;\n+\tstruct list_head list;\n+};\n+\n /**\n * struct nfp_tun_mac_addr - configure MAC address of tunnel EP on NFP\n * @reserved:\treserved for future use\n@@ -112,6 +137,87 @@ nfp_flower_xmit_tun_conf(struct nfp_app *app, u8 mtype, u16 plen, void *pdata)\n \treturn 0;\n }\n \n+static void nfp_tun_write_ipv4_list(struct nfp_app *app)\n+{\n+\tstruct nfp_flower_priv *priv = app->priv;\n+\tstruct nfp_ipv4_addr_entry *entry;\n+\tstruct nfp_tun_ipv4_addr payload;\n+\tstruct list_head *ptr, *storage;\n+\tint count;\n+\n+\tmemset(&payload, 0, sizeof(struct nfp_tun_ipv4_addr));\n+\tmutex_lock(&priv->nfp_ipv4_off_lock);\n+\tcount = 0;\n+\tlist_for_each_safe(ptr, storage, &priv->nfp_ipv4_off_list) {\n+\t\tif (count >= NFP_FL_IPV4_ADDRS_MAX) {\n+\t\t\tmutex_unlock(&priv->nfp_ipv4_off_lock);\n+\t\t\tnfp_flower_cmsg_warn(app, \"IPv4 offload exceeds limit.\\n\");\n+\t\t\treturn;\n+\t\t}\n+\t\tentry = list_entry(ptr, struct nfp_ipv4_addr_entry, list);\n+\t\tpayload.ipv4_addr[count++] = entry->ipv4_addr;\n+\t}\n+\tpayload.count = cpu_to_be32(count);\n+\tmutex_unlock(&priv->nfp_ipv4_off_lock);\n+\n+\tnfp_flower_xmit_tun_conf(app, NFP_FLOWER_CMSG_TYPE_TUN_IPS,\n+\t\t\t\t sizeof(struct nfp_tun_ipv4_addr),\n+\t\t\t\t &payload);\n+}\n+\n+void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4)\n+{\n+\tstruct nfp_flower_priv *priv = app->priv;\n+\tstruct nfp_ipv4_addr_entry *entry;\n+\tstruct list_head *ptr, *storage;\n+\n+\tmutex_lock(&priv->nfp_ipv4_off_lock);\n+\tlist_for_each_safe(ptr, storage, &priv->nfp_ipv4_off_list) {\n+\t\tentry = list_entry(ptr, struct nfp_ipv4_addr_entry, list);\n+\t\tif (entry->ipv4_addr == ipv4) {\n+\t\t\tentry->ref_count++;\n+\t\t\tmutex_unlock(&priv->nfp_ipv4_off_lock);\n+\t\t\treturn;\n+\t\t}\n+\t}\n+\n+\tentry = kmalloc(sizeof(*entry), GFP_KERNEL);\n+\tif (!entry) {\n+\t\tmutex_unlock(&priv->nfp_ipv4_off_lock);\n+\t\tnfp_flower_cmsg_warn(app, \"Mem error when offloading IP address.\\n\");\n+\t\treturn;\n+\t}\n+\tentry->ipv4_addr = ipv4;\n+\tentry->ref_count = 1;\n+\tlist_add_tail(&entry->list, &priv->nfp_ipv4_off_list);\n+\tmutex_unlock(&priv->nfp_ipv4_off_lock);\n+\n+\tnfp_tun_write_ipv4_list(app);\n+}\n+\n+void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4)\n+{\n+\tstruct nfp_flower_priv *priv = app->priv;\n+\tstruct nfp_ipv4_addr_entry *entry;\n+\tstruct list_head *ptr, *storage;\n+\n+\tmutex_lock(&priv->nfp_ipv4_off_lock);\n+\tlist_for_each_safe(ptr, storage, &priv->nfp_ipv4_off_list) {\n+\t\tentry = list_entry(ptr, struct nfp_ipv4_addr_entry, list);\n+\t\tif (entry->ipv4_addr == ipv4) {\n+\t\t\tentry->ref_count--;\n+\t\t\tif (!entry->ref_count) {\n+\t\t\t\tlist_del(&entry->list);\n+\t\t\t\tkfree(entry);\n+\t\t\t}\n+\t\t\tbreak;\n+\t\t}\n+\t}\n+\tmutex_unlock(&priv->nfp_ipv4_off_lock);\n+\n+\tnfp_tun_write_ipv4_list(app);\n+}\n+\n void nfp_tunnel_write_macs(struct nfp_app *app)\n {\n \tstruct nfp_flower_priv *priv = app->priv;\n@@ -324,6 +430,10 @@ int nfp_tunnel_config_start(struct nfp_app *app)\n \tINIT_LIST_HEAD(&priv->nfp_mac_index_list);\n \tida_init(&priv->nfp_mac_off_ids);\n \n+\t/* Initialise priv data for IPv4 offloading. */\n+\tmutex_init(&priv->nfp_ipv4_off_lock);\n+\tINIT_LIST_HEAD(&priv->nfp_ipv4_off_list);\n+\n \terr = register_netdevice_notifier(&priv->nfp_tun_mac_nb);\n \tif (err)\n \t\tgoto err_free_mac_ida;\n@@ -346,6 +456,7 @@ void nfp_tunnel_config_stop(struct nfp_app *app)\n \tstruct nfp_tun_mac_offload_entry *mac_entry;\n \tstruct nfp_flower_priv *priv = app->priv;\n \tstruct nfp_tun_mac_non_nfp_idx *mac_idx;\n+\tstruct nfp_ipv4_addr_entry *ip_entry;\n \tstruct list_head *ptr, *storage;\n \n \tunregister_netdevice_notifier(&priv->nfp_tun_mac_nb);\n@@ -371,4 +482,13 @@ void nfp_tunnel_config_stop(struct nfp_app *app)\n \tmutex_unlock(&priv->nfp_mac_index_lock);\n \n \tida_destroy(&priv->nfp_mac_off_ids);\n+\n+\t/* Free any memory that may be occupied by ipv4 list. */\n+\tmutex_lock(&priv->nfp_ipv4_off_lock);\n+\tlist_for_each_safe(ptr, storage, &priv->nfp_ipv4_off_list) {\n+\t\tip_entry = list_entry(ptr, struct nfp_ipv4_addr_entry, list);\n+\t\tlist_del(&ip_entry->list);\n+\t\tkfree(ip_entry);\n+\t}\n+\tmutex_unlock(&priv->nfp_ipv4_off_lock);\n }\n","prefixes":["net-next","5/7"]}