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RDMA: Convert drivers to use the AH's sgid_attr in post_wr paths

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For UD the drivers were doing a sgid_index lookup into the cache to get
the attrs, however we can now directly access the same attrs stores in
the ib_ah instead and remove the lookup.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
This commit is contained in:
Parav Pandit 2018-06-13 10:22:09 +03:00 committed by Jason Gunthorpe
parent 1a1f460ff1
commit 89af969a66
4 changed files with 19 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/infiniband/hw/bnxt_re/ib_verbs.c
View File

@ -1879,15 +1879,13 @@ static int bnxt_re_build_qp1_send_v2(struct bnxt_re_qp *qp,
struct bnxt_qplib_swqe *wqe,
int payload_size)
{
struct ib_device *ibdev = &qp->rdev->ibdev;
struct bnxt_re_ah *ah = container_of(ud_wr(wr)->ah, struct bnxt_re_ah,
ib_ah);
struct bnxt_qplib_ah *qplib_ah = &ah->qplib_ah;
const struct ib_gid_attr *sgid_attr = ah->ib_ah.sgid_attr;
struct bnxt_qplib_sge sge;
union ib_gid sgid;
u8 nw_type;
u16 ether_type;
struct ib_gid_attr sgid_attr;
union ib_gid dgid;
bool is_eth = false;
bool is_vlan = false;
@ -1900,22 +1898,10 @@ static int bnxt_re_build_qp1_send_v2(struct bnxt_re_qp *qp,
memset(&qp->qp1_hdr, 0, sizeof(qp->qp1_hdr));
rc = ib_get_cached_gid(ibdev, 1,
qplib_ah->host_sgid_index, &sgid,
&sgid_attr);
if (rc) {
dev_err(rdev_to_dev(qp->rdev),
"Failed to query gid at index %d",
qplib_ah->host_sgid_index);
return rc;
}
if (sgid_attr.ndev) {
if (is_vlan_dev(sgid_attr.ndev))
vlan_id = vlan_dev_vlan_id(sgid_attr.ndev);
dev_put(sgid_attr.ndev);
}
if (is_vlan_dev(sgid_attr->ndev))
vlan_id = vlan_dev_vlan_id(sgid_attr->ndev);
/* Get network header type for this GID */
nw_type = rdma_gid_attr_network_type(&sgid_attr);
nw_type = rdma_gid_attr_network_type(sgid_attr);
switch (nw_type) {
case RDMA_NETWORK_IPV4:
nw_type = BNXT_RE_ROCEV2_IPV4_PACKET;
@ -1928,9 +1914,9 @@ static int bnxt_re_build_qp1_send_v2(struct bnxt_re_qp *qp,
break;
}
memcpy(&dgid.raw, &qplib_ah->dgid, 16);
is_udp = sgid_attr.gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP;
is_udp = sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP;
if (is_udp) {
if (ipv6_addr_v4mapped((struct in6_addr *)&sgid)) {
if (ipv6_addr_v4mapped((struct in6_addr *)&sgid_attr->gid)) {
ip_version = 4;
ether_type = ETH_P_IP;
} else {
@ -1963,9 +1949,10 @@ static int bnxt_re_build_qp1_send_v2(struct bnxt_re_qp *qp,
}
if (is_grh || (ip_version == 6)) {
memcpy(qp->qp1_hdr.grh.source_gid.raw, sgid.raw, sizeof(sgid));
memcpy(qp->qp1_hdr.grh.source_gid.raw, sgid_attr->gid.raw,
sizeof(sgid_attr->gid));
memcpy(qp->qp1_hdr.grh.destination_gid.raw, qplib_ah->dgid.data,
sizeof(sgid));
sizeof(sgid_attr->gid));
qp->qp1_hdr.grh.hop_limit = qplib_ah->hop_limit;
}
@ -1975,7 +1962,7 @@ static int bnxt_re_build_qp1_send_v2(struct bnxt_re_qp *qp,
qp->qp1_hdr.ip4.frag_off = htons(IP_DF);
qp->qp1_hdr.ip4.ttl = qplib_ah->hop_limit;
memcpy(&qp->qp1_hdr.ip4.saddr, sgid.raw + 12, 4);
memcpy(&qp->qp1_hdr.ip4.saddr, sgid_attr->gid.raw + 12, 4);
memcpy(&qp->qp1_hdr.ip4.daddr, qplib_ah->dgid.data + 12, 4);
qp->qp1_hdr.ip4.check = ib_ud_ip4_csum(&qp->qp1_hdr);
}

8
drivers/infiniband/hw/mlx4/qp.c
View File

@ -3169,12 +3169,8 @@ static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_ud_wr *wr,
to_mdev(ib_dev)->sriov.demux[sqp->qp.port - 1].
guid_cache[ah->av.ib.gid_index];
} else {
err = rdma_query_gid(ib_dev,
be32_to_cpu(ah->av.ib.port_pd) >> 24,
ah->av.ib.gid_index,
&sqp->ud_header.grh.source_gid);
if (err)
return err;
sqp->ud_header.grh.source_gid =
ah->ibah.sgid_attr->gid;
}
}
memcpy(sqp->ud_header.grh.destination_gid.raw,

5
drivers/infiniband/hw/mthca/mthca_av.c
View File

@ -281,10 +281,7 @@ int mthca_read_ah(struct mthca_dev *dev, struct mthca_ah *ah,
header->grh.flow_label =
ah->av->sl_tclass_flowlabel & cpu_to_be32(0xfffff);
header->grh.hop_limit = ah->av->hop_limit;
ib_get_cached_gid(&dev->ib_dev,
be32_to_cpu(ah->av->port_pd) >> 24,
ah->av->gid_index % dev->limits.gid_table_len,
&header->grh.source_gid, NULL);
header->grh.source_gid = ah->ibah.sgid_attr->gid;
memcpy(header->grh.destination_gid.raw,
ah->av->dgid, 16);
}

25
drivers/infiniband/hw/qedr/qedr_roce_cm.c
View File

@ -387,11 +387,10 @@ static inline int qedr_gsi_build_header(struct qedr_dev *dev,
bool has_vlan = false, has_grh_ipv6 = true;
struct rdma_ah_attr *ah_attr = &get_qedr_ah(ud_wr(swr)->ah)->attr;
const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr);
union ib_gid sgid;
const struct ib_gid_attr *sgid_attr = grh->sgid_attr;
int send_size = 0;
u16 vlan_id = 0;
u16 ether_type;
struct ib_gid_attr sgid_attr;
int rc;
int ip_ver = 0;
@ -402,28 +401,16 @@ static inline int qedr_gsi_build_header(struct qedr_dev *dev,
for (i = 0; i < swr->num_sge; ++i)
send_size += swr->sg_list[i].length;
rc = ib_get_cached_gid(qp->ibqp.device, rdma_ah_get_port_num(ah_attr),
grh->sgid_index, &sgid, &sgid_attr);
if (rc) {
DP_ERR(dev,
"gsi post send: failed to get cached GID (port=%d, ix=%d)\n",
rdma_ah_get_port_num(ah_attr),
grh->sgid_index);
return rc;
}
vlan_id = rdma_vlan_dev_vlan_id(sgid_attr.ndev);
vlan_id = rdma_vlan_dev_vlan_id(sgid_attr->ndev);
if (vlan_id < VLAN_CFI_MASK)
has_vlan = true;
dev_put(sgid_attr.ndev);
has_udp = (sgid_attr.gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP);
has_udp = (sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP);
if (!has_udp) {
/* RoCE v1 */
ether_type = ETH_P_IBOE;
*roce_mode = ROCE_V1;
} else if (ipv6_addr_v4mapped((struct in6_addr *)&sgid)) {
} else if (ipv6_addr_v4mapped((struct in6_addr *)&sgid_attr->gid)) {
/* RoCE v2 IPv4 */
ip_ver = 4;
ether_type = ETH_P_IP;
@ -471,7 +458,7 @@ static inline int qedr_gsi_build_header(struct qedr_dev *dev,
udh->grh.flow_label = grh->flow_label;
udh->grh.hop_limit = grh->hop_limit;
udh->grh.destination_gid = grh->dgid;
memcpy(&udh->grh.source_gid.raw, &sgid.raw,
memcpy(&udh->grh.source_gid.raw, sgid_attr->gid.raw,
sizeof(udh->grh.source_gid.raw));
} else {
/* IPv4 header */
@ -482,7 +469,7 @@ static inline int qedr_gsi_build_header(struct qedr_dev *dev,
udh->ip4.frag_off = htons(IP_DF);
udh->ip4.ttl = grh->hop_limit;
ipv4_addr = qedr_get_ipv4_from_gid(sgid.raw);
ipv4_addr = qedr_get_ipv4_from_gid(sgid_attr->gid.raw);
udh->ip4.saddr = ipv4_addr;
ipv4_addr = qedr_get_ipv4_from_gid(grh->dgid.raw);
udh->ip4.daddr = ipv4_addr;