kernel APIs. List of sources used: 1) rdma-core was cloned from "https://github.com/linux-rdma/rdma-core.git" Top commit d65138ef93af30b3ea249f3a84aa6a24ba7f8a75 2) OpenSM was cloned from git://git.openfabrics.org/~halr/opensm.git Top commit 85f841cf209f791c89a075048a907020e924528d 3) libibmad was cloned from "git://git.openfabrics.org/~iraweiny/libibmad.git" Tag 1.3.13 with some additional patches from Mellanox. 4) infiniband-diags was cloned from "git://git.openfabrics.org/~iraweiny/infiniband-diags.git" Tag 1.6.7 with some additional patches from Mellanox. Added the required Makefiles for building and installing. Sponsored by: Mellanox Technologies
320 lines
7.9 KiB
C
320 lines
7.9 KiB
C
/*
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* Copyright (c) 2010-2014 Intel Corporation. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* $Id: cm.c 3453 2005-09-15 21:43:21Z sean.hefty $
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*/
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#include <config.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netdb.h>
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#include <unistd.h>
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#include "cma.h"
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#include <rdma/rdma_cma.h>
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#include <infiniband/ib.h>
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static struct rdma_addrinfo nohints;
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static void ucma_convert_to_ai(struct addrinfo *ai,
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const struct rdma_addrinfo *rai)
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{
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memset(ai, 0, sizeof(*ai));
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if (rai->ai_flags & RAI_PASSIVE)
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ai->ai_flags = AI_PASSIVE;
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if (rai->ai_flags & RAI_NUMERICHOST)
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ai->ai_flags |= AI_NUMERICHOST;
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if (rai->ai_family != AF_IB)
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ai->ai_family = rai->ai_family;
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switch (rai->ai_qp_type) {
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case IBV_QPT_RC:
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case IBV_QPT_UC:
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case IBV_QPT_XRC_SEND:
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case IBV_QPT_XRC_RECV:
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ai->ai_socktype = SOCK_STREAM;
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break;
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case IBV_QPT_UD:
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ai->ai_socktype = SOCK_DGRAM;
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break;
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}
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switch (rai->ai_port_space) {
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case RDMA_PS_TCP:
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ai->ai_protocol = IPPROTO_TCP;
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break;
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case RDMA_PS_IPOIB:
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case RDMA_PS_UDP:
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ai->ai_protocol = IPPROTO_UDP;
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break;
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case RDMA_PS_IB:
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if (ai->ai_socktype == SOCK_STREAM)
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ai->ai_protocol = IPPROTO_TCP;
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else if (ai->ai_socktype == SOCK_DGRAM)
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ai->ai_protocol = IPPROTO_UDP;
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break;
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}
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if (rai->ai_flags & RAI_PASSIVE) {
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ai->ai_addrlen = rai->ai_src_len;
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ai->ai_addr = rai->ai_src_addr;
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} else {
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ai->ai_addrlen = rai->ai_dst_len;
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ai->ai_addr = rai->ai_dst_addr;
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}
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ai->ai_canonname = rai->ai_dst_canonname;
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ai->ai_next = NULL;
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}
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static int ucma_copy_addr(struct sockaddr **dst, socklen_t *dst_len,
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struct sockaddr *src, socklen_t src_len)
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{
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*dst = malloc(src_len);
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if (!(*dst))
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return ERR(ENOMEM);
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memcpy(*dst, src, src_len);
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*dst_len = src_len;
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return 0;
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}
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void ucma_set_sid(enum rdma_port_space ps, struct sockaddr *addr,
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struct sockaddr_ib *sib)
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{
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__be16 port;
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port = addr ? ucma_get_port(addr) : 0;
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sib->sib_sid = htobe64(((uint64_t) ps << 16) + be16toh(port));
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if (ps)
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sib->sib_sid_mask = htobe64(RDMA_IB_IP_PS_MASK);
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if (port)
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sib->sib_sid_mask |= htobe64(RDMA_IB_IP_PORT_MASK);
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}
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static int ucma_convert_in6(int ps, struct sockaddr_ib **dst, socklen_t *dst_len,
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struct sockaddr_in6 *src, socklen_t src_len)
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{
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*dst = calloc(1, sizeof(struct sockaddr_ib));
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if (!(*dst))
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return ERR(ENOMEM);
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(*dst)->sib_family = AF_IB;
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(*dst)->sib_pkey = htobe16(0xFFFF);
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(*dst)->sib_flowinfo = src->sin6_flowinfo;
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ib_addr_set(&(*dst)->sib_addr, src->sin6_addr.s6_addr32[0],
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src->sin6_addr.s6_addr32[1], src->sin6_addr.s6_addr32[2],
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src->sin6_addr.s6_addr32[3]);
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ucma_set_sid(ps, (struct sockaddr *) src, *dst);
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(*dst)->sib_scope_id = src->sin6_scope_id;
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*dst_len = sizeof(struct sockaddr_ib);
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return 0;
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}
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static int ucma_convert_to_rai(struct rdma_addrinfo *rai,
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const struct rdma_addrinfo *hints,
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const struct addrinfo *ai)
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{
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int ret;
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if (hints->ai_qp_type) {
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rai->ai_qp_type = hints->ai_qp_type;
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} else {
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switch (ai->ai_socktype) {
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case SOCK_STREAM:
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rai->ai_qp_type = IBV_QPT_RC;
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break;
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case SOCK_DGRAM:
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rai->ai_qp_type = IBV_QPT_UD;
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break;
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}
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}
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if (hints->ai_port_space) {
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rai->ai_port_space = hints->ai_port_space;
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} else {
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switch (ai->ai_protocol) {
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case IPPROTO_TCP:
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rai->ai_port_space = RDMA_PS_TCP;
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break;
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case IPPROTO_UDP:
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rai->ai_port_space = RDMA_PS_UDP;
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break;
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}
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}
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if (ai->ai_flags & AI_PASSIVE) {
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rai->ai_flags = RAI_PASSIVE;
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if (ai->ai_canonname)
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rai->ai_src_canonname = strdup(ai->ai_canonname);
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if ((hints->ai_flags & RAI_FAMILY) && (hints->ai_family == AF_IB) &&
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(hints->ai_flags & RAI_NUMERICHOST)) {
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rai->ai_family = AF_IB;
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ret = ucma_convert_in6(rai->ai_port_space,
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(struct sockaddr_ib **) &rai->ai_src_addr,
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&rai->ai_src_len,
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(struct sockaddr_in6 *) ai->ai_addr,
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ai->ai_addrlen);
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} else {
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rai->ai_family = ai->ai_family;
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ret = ucma_copy_addr(&rai->ai_src_addr, &rai->ai_src_len,
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ai->ai_addr, ai->ai_addrlen);
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}
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} else {
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if (ai->ai_canonname)
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rai->ai_dst_canonname = strdup(ai->ai_canonname);
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if ((hints->ai_flags & RAI_FAMILY) && (hints->ai_family == AF_IB) &&
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(hints->ai_flags & RAI_NUMERICHOST)) {
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rai->ai_family = AF_IB;
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ret = ucma_convert_in6(rai->ai_port_space,
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(struct sockaddr_ib **) &rai->ai_dst_addr,
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&rai->ai_dst_len,
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(struct sockaddr_in6 *) ai->ai_addr,
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ai->ai_addrlen);
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} else {
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rai->ai_family = ai->ai_family;
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ret = ucma_copy_addr(&rai->ai_dst_addr, &rai->ai_dst_len,
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ai->ai_addr, ai->ai_addrlen);
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}
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}
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return ret;
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}
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static int ucma_getaddrinfo(const char *node, const char *service,
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const struct rdma_addrinfo *hints,
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struct rdma_addrinfo *rai)
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{
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struct addrinfo ai_hints;
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struct addrinfo *ai;
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int ret;
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if (hints != &nohints) {
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ucma_convert_to_ai(&ai_hints, hints);
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ret = getaddrinfo(node, service, &ai_hints, &ai);
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} else {
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ret = getaddrinfo(node, service, NULL, &ai);
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}
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if (ret)
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return ret;
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ret = ucma_convert_to_rai(rai, hints, ai);
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freeaddrinfo(ai);
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return ret;
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}
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int rdma_getaddrinfo(const char *node, const char *service,
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const struct rdma_addrinfo *hints,
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struct rdma_addrinfo **res)
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{
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struct rdma_addrinfo *rai;
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int ret;
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if (!service && !node && !hints)
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return ERR(EINVAL);
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ret = ucma_init();
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if (ret)
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return ret;
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rai = calloc(1, sizeof(*rai));
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if (!rai)
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return ERR(ENOMEM);
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if (!hints)
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hints = &nohints;
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if (node || service) {
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ret = ucma_getaddrinfo(node, service, hints, rai);
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} else {
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rai->ai_flags = hints->ai_flags;
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rai->ai_family = hints->ai_family;
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rai->ai_qp_type = hints->ai_qp_type;
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rai->ai_port_space = hints->ai_port_space;
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if (hints->ai_dst_len) {
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ret = ucma_copy_addr(&rai->ai_dst_addr, &rai->ai_dst_len,
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hints->ai_dst_addr, hints->ai_dst_len);
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}
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}
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if (ret)
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goto err;
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if (!rai->ai_src_len && hints->ai_src_len) {
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ret = ucma_copy_addr(&rai->ai_src_addr, &rai->ai_src_len,
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hints->ai_src_addr, hints->ai_src_len);
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if (ret)
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goto err;
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}
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if (!(rai->ai_flags & RAI_PASSIVE))
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ucma_ib_resolve(&rai, hints);
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*res = rai;
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return 0;
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err:
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rdma_freeaddrinfo(rai);
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return ret;
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}
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void rdma_freeaddrinfo(struct rdma_addrinfo *res)
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{
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struct rdma_addrinfo *rai;
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while (res) {
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rai = res;
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res = res->ai_next;
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if (rai->ai_connect)
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free(rai->ai_connect);
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if (rai->ai_route)
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free(rai->ai_route);
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if (rai->ai_src_canonname)
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free(rai->ai_src_canonname);
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if (rai->ai_dst_canonname)
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free(rai->ai_dst_canonname);
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if (rai->ai_src_addr)
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free(rai->ai_src_addr);
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if (rai->ai_dst_addr)
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free(rai->ai_dst_addr);
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free(rai);
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}
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}
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