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Date: Sat, 17 Aug 2019 16:49:20 +0800
From: kbuild test robot <lkp@...el.com>
To: Michael Chan <michael.chan@...adcom.com>
Cc: kbuild-all@...org, davem@...emloft.net, netdev@...r.kernel.org,
Somnath Kotur <somnath.kotur@...adcom.com>
Subject: Re: [PATCH net 6/6] bnxt_en: Fix to include flow direction in L2 key
Hi Michael,
I love your patch! Perhaps something to improve:
[auto build test WARNING on net/master]
url: https://github.com/0day-ci/linux/commits/Michael-Chan/bnxt_en-Bug-fixes/20190817-155755
config: sparc64-allmodconfig (attached as .config)
compiler: sparc64-linux-gcc (GCC) 7.4.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=sparc64
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c: In function 'bnxt_tc_get_decap_handle':
>> drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c:1047:9: warning: braces around scalar initializer
struct bnxt_tc_l2_key l2_info = { {0} };
^~~~~~~~~~~~~~
drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c:1047:9: note: (near initialization for 'l2_info.dir')
vim +1047 drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c
8c95f773b4a367 Sathya Perla 2017-10-26 1040
8c95f773b4a367 Sathya Perla 2017-10-26 1041 static int bnxt_tc_get_decap_handle(struct bnxt *bp, struct bnxt_tc_flow *flow,
8c95f773b4a367 Sathya Perla 2017-10-26 1042 struct bnxt_tc_flow_node *flow_node,
8c95f773b4a367 Sathya Perla 2017-10-26 1043 __le32 *decap_filter_handle)
8c95f773b4a367 Sathya Perla 2017-10-26 1044 {
8c95f773b4a367 Sathya Perla 2017-10-26 1045 struct ip_tunnel_key *decap_key = &flow->tun_key;
cd66358e52f745 Sathya Perla 2017-10-26 1046 struct bnxt_tc_info *tc_info = bp->tc_info;
8c95f773b4a367 Sathya Perla 2017-10-26 @1047 struct bnxt_tc_l2_key l2_info = { {0} };
8c95f773b4a367 Sathya Perla 2017-10-26 1048 struct bnxt_tc_tunnel_node *decap_node;
8c95f773b4a367 Sathya Perla 2017-10-26 1049 struct ip_tunnel_key tun_key = { 0 };
8c95f773b4a367 Sathya Perla 2017-10-26 1050 struct bnxt_tc_l2_key *decap_l2_info;
8c95f773b4a367 Sathya Perla 2017-10-26 1051 __le32 ref_decap_handle;
8c95f773b4a367 Sathya Perla 2017-10-26 1052 int rc;
8c95f773b4a367 Sathya Perla 2017-10-26 1053
8c95f773b4a367 Sathya Perla 2017-10-26 1054 /* Check if there's another flow using the same tunnel decap.
8c95f773b4a367 Sathya Perla 2017-10-26 1055 * If not, add this tunnel to the table and resolve the other
479ca3bf91da97 Sriharsha Basavapatna 2018-04-11 1056 * tunnel header fileds. Ignore src_port in the tunnel_key,
479ca3bf91da97 Sriharsha Basavapatna 2018-04-11 1057 * since it is not required for decap filters.
8c95f773b4a367 Sathya Perla 2017-10-26 1058 */
479ca3bf91da97 Sriharsha Basavapatna 2018-04-11 1059 decap_key->tp_src = 0;
8c95f773b4a367 Sathya Perla 2017-10-26 1060 decap_node = bnxt_tc_get_tunnel_node(bp, &tc_info->decap_table,
8c95f773b4a367 Sathya Perla 2017-10-26 1061 &tc_info->decap_ht_params,
8c95f773b4a367 Sathya Perla 2017-10-26 1062 decap_key);
8c95f773b4a367 Sathya Perla 2017-10-26 1063 if (!decap_node)
8c95f773b4a367 Sathya Perla 2017-10-26 1064 return -ENOMEM;
8c95f773b4a367 Sathya Perla 2017-10-26 1065
8c95f773b4a367 Sathya Perla 2017-10-26 1066 flow_node->decap_node = decap_node;
8c95f773b4a367 Sathya Perla 2017-10-26 1067
8c95f773b4a367 Sathya Perla 2017-10-26 1068 if (decap_node->tunnel_handle != INVALID_TUNNEL_HANDLE)
8c95f773b4a367 Sathya Perla 2017-10-26 1069 goto done;
8c95f773b4a367 Sathya Perla 2017-10-26 1070
8c95f773b4a367 Sathya Perla 2017-10-26 1071 /* Resolve the L2 fields for tunnel decap
8c95f773b4a367 Sathya Perla 2017-10-26 1072 * Resolve the route for remote vtep (saddr) of the decap key
8c95f773b4a367 Sathya Perla 2017-10-26 1073 * Find it's next-hop mac addrs
8c95f773b4a367 Sathya Perla 2017-10-26 1074 */
8c95f773b4a367 Sathya Perla 2017-10-26 1075 tun_key.u.ipv4.dst = flow->tun_key.u.ipv4.src;
8c95f773b4a367 Sathya Perla 2017-10-26 1076 tun_key.tp_dst = flow->tun_key.tp_dst;
e9ecc731a87912 Sathya Perla 2017-12-01 1077 rc = bnxt_tc_resolve_tunnel_hdrs(bp, &tun_key, &l2_info);
8c95f773b4a367 Sathya Perla 2017-10-26 1078 if (rc)
8c95f773b4a367 Sathya Perla 2017-10-26 1079 goto put_decap;
8c95f773b4a367 Sathya Perla 2017-10-26 1080
8c95f773b4a367 Sathya Perla 2017-10-26 1081 decap_l2_info = &decap_node->l2_info;
c8fb7b8259c67b Sunil Challa 2017-12-01 1082 /* decap smac is wildcarded */
8c95f773b4a367 Sathya Perla 2017-10-26 1083 ether_addr_copy(decap_l2_info->dmac, l2_info.smac);
8c95f773b4a367 Sathya Perla 2017-10-26 1084 if (l2_info.num_vlans) {
8c95f773b4a367 Sathya Perla 2017-10-26 1085 decap_l2_info->num_vlans = l2_info.num_vlans;
8c95f773b4a367 Sathya Perla 2017-10-26 1086 decap_l2_info->inner_vlan_tpid = l2_info.inner_vlan_tpid;
8c95f773b4a367 Sathya Perla 2017-10-26 1087 decap_l2_info->inner_vlan_tci = l2_info.inner_vlan_tci;
8c95f773b4a367 Sathya Perla 2017-10-26 1088 }
8c95f773b4a367 Sathya Perla 2017-10-26 1089 flow->flags |= BNXT_TC_FLOW_FLAGS_TUNL_ETH_ADDRS;
8c95f773b4a367 Sathya Perla 2017-10-26 1090
8c95f773b4a367 Sathya Perla 2017-10-26 1091 /* For getting a decap_filter_handle we first need to check if
8c95f773b4a367 Sathya Perla 2017-10-26 1092 * there are any other decap flows that share the same tunnel L2
8c95f773b4a367 Sathya Perla 2017-10-26 1093 * key and if so, pass that flow's decap_filter_handle as the
8c95f773b4a367 Sathya Perla 2017-10-26 1094 * ref_decap_handle for this flow.
8c95f773b4a367 Sathya Perla 2017-10-26 1095 */
8c95f773b4a367 Sathya Perla 2017-10-26 1096 rc = bnxt_tc_get_ref_decap_handle(bp, flow, decap_l2_info, flow_node,
8c95f773b4a367 Sathya Perla 2017-10-26 1097 &ref_decap_handle);
8c95f773b4a367 Sathya Perla 2017-10-26 1098 if (rc)
8c95f773b4a367 Sathya Perla 2017-10-26 1099 goto put_decap;
8c95f773b4a367 Sathya Perla 2017-10-26 1100
8c95f773b4a367 Sathya Perla 2017-10-26 1101 /* Issue the hwrm cmd to allocate a decap filter handle */
8c95f773b4a367 Sathya Perla 2017-10-26 1102 rc = hwrm_cfa_decap_filter_alloc(bp, flow, decap_l2_info,
8c95f773b4a367 Sathya Perla 2017-10-26 1103 ref_decap_handle,
8c95f773b4a367 Sathya Perla 2017-10-26 1104 &decap_node->tunnel_handle);
8c95f773b4a367 Sathya Perla 2017-10-26 1105 if (rc)
8c95f773b4a367 Sathya Perla 2017-10-26 1106 goto put_decap_l2;
8c95f773b4a367 Sathya Perla 2017-10-26 1107
8c95f773b4a367 Sathya Perla 2017-10-26 1108 done:
8c95f773b4a367 Sathya Perla 2017-10-26 1109 *decap_filter_handle = decap_node->tunnel_handle;
8c95f773b4a367 Sathya Perla 2017-10-26 1110 return 0;
8c95f773b4a367 Sathya Perla 2017-10-26 1111
8c95f773b4a367 Sathya Perla 2017-10-26 1112 put_decap_l2:
8c95f773b4a367 Sathya Perla 2017-10-26 1113 bnxt_tc_put_decap_l2_node(bp, flow_node);
8c95f773b4a367 Sathya Perla 2017-10-26 1114 put_decap:
8c95f773b4a367 Sathya Perla 2017-10-26 1115 bnxt_tc_put_tunnel_node(bp, &tc_info->decap_table,
8c95f773b4a367 Sathya Perla 2017-10-26 1116 &tc_info->decap_ht_params,
8c95f773b4a367 Sathya Perla 2017-10-26 1117 flow_node->decap_node);
8c95f773b4a367 Sathya Perla 2017-10-26 1118 return rc;
8c95f773b4a367 Sathya Perla 2017-10-26 1119 }
8c95f773b4a367 Sathya Perla 2017-10-26 1120
:::::: The code at line 1047 was first introduced by commit
:::::: 8c95f773b4a367f7b9bcca7ab5f85675cfc812e9 bnxt_en: add support for Flower based vxlan encap/decap offload
:::::: TO: Sathya Perla <sathya.perla@...adcom.com>
:::::: CC: David S. Miller <davem@...emloft.net>
---
0-DAY kernel test infrastructure Open Source Technology Center
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