From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matan Barak Subject: [PATCH for-next V1 03/10] IB/core: Add netdev to path record Date: Fri, 7 Aug 2015 16:00:56 +0300 Message-ID: <1438952463-23707-4-git-send-email-matanb@mellanox.com> References: <1438952463-23707-1-git-send-email-matanb@mellanox.com> Return-path: In-Reply-To: <1438952463-23707-1-git-send-email-matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Doug Ledford Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Matan Barak , Jason Gunthorpe , Or Gerlitz , Haggai Eran , Somnath Kotur List-Id: linux-rdma@vger.kernel.org In order to find the sgid_index, one could just query the IB cache with the correct GID and netdevice. Therefore, instead of storing the L2 attributes directly in the path, we only store the ifindex and net and use them later to get the sgid_index. The vlan_id and smac L2 attributes are removed in a later patch. Signed-off-by: Matan Barak --- drivers/infiniband/core/sa_query.c | 13 +++++++++++-- drivers/infiniband/core/uverbs_marshall.c | 2 ++ include/rdma/ib_sa.h | 10 ++++++++++ 3 files changed, 23 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c index 2e46e38..4c9102b 100644 --- a/drivers/infiniband/core/sa_query.c +++ b/drivers/infiniband/core/sa_query.c @@ -971,18 +971,25 @@ int ib_init_ah_from_path(struct ib_device *device, u8 port_num, force_grh = rdma_cap_eth_ah(device, port_num); if (rec->hop_limit > 1 || force_grh) { + struct net_device *ndev = ib_get_ndev_from_path(rec); + ah_attr->ah_flags = IB_AH_GRH; ah_attr->grh.dgid = rec->dgid; - ret = ib_find_cached_gid(device, &rec->sgid, NULL, &port_num, + ret = ib_find_cached_gid(device, &rec->sgid, ndev, &port_num, &gid_index); - if (ret) + if (ret) { + if (ndev) + dev_put(ndev); return ret; + } ah_attr->grh.sgid_index = gid_index; ah_attr->grh.flow_label = be32_to_cpu(rec->flow_label); ah_attr->grh.hop_limit = rec->hop_limit; ah_attr->grh.traffic_class = rec->traffic_class; + if (ndev) + dev_put(ndev); } if (force_grh) { memcpy(ah_attr->dmac, rec->dmac, ETH_ALEN); @@ -1115,6 +1122,8 @@ static void ib_sa_path_rec_callback(struct ib_sa_query *sa_query, ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table), mad->data, &rec); rec.vlan_id = 0xffff; + rec.net = NULL; + rec.ifindex = 0; memset(rec.dmac, 0, ETH_ALEN); memset(rec.smac, 0, ETH_ALEN); query->callback(status, &rec, query->context); diff --git a/drivers/infiniband/core/uverbs_marshall.c b/drivers/infiniband/core/uverbs_marshall.c index abd9724..484698c 100644 --- a/drivers/infiniband/core/uverbs_marshall.c +++ b/drivers/infiniband/core/uverbs_marshall.c @@ -144,5 +144,7 @@ void ib_copy_path_rec_from_user(struct ib_sa_path_rec *dst, memset(dst->smac, 0, sizeof(dst->smac)); memset(dst->dmac, 0, sizeof(dst->dmac)); dst->vlan_id = 0xffff; + dst->net = NULL; + dst->ifindex = 0; } EXPORT_SYMBOL(ib_copy_path_rec_from_user); diff --git a/include/rdma/ib_sa.h b/include/rdma/ib_sa.h index 7e071a6..406ecf1 100644 --- a/include/rdma/ib_sa.h +++ b/include/rdma/ib_sa.h @@ -39,6 +39,7 @@ #include #include +#include #include #include @@ -157,8 +158,17 @@ struct ib_sa_path_rec { u8 smac[ETH_ALEN]; u8 dmac[ETH_ALEN]; u16 vlan_id; + /* ignored in IB */ + int ifindex; + /* ignored in IB */ + struct net *net; }; +static inline struct net_device *ib_get_ndev_from_path(struct ib_sa_path_rec *rec) +{ + return rec->net ? dev_get_by_index(rec->net, rec->ifindex) : NULL; +} + #define IB_SA_MCMEMBER_REC_MGID IB_SA_COMP_MASK( 0) #define IB_SA_MCMEMBER_REC_PORT_GID IB_SA_COMP_MASK( 1) #define IB_SA_MCMEMBER_REC_QKEY IB_SA_COMP_MASK( 2) -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html