[libvirt] [v4 PATCH] add 802.1Qbh handling for port-profiles based on Stefan's previous patches
Dave Allan
dallan at redhat.com
Tue May 25 02:55:52 UTC 2010
On Mon, May 24, 2010 at 05:22:15PM -0700, Scott Feldman wrote:
> From: Scott Feldman <scofeldm at cisco.com>
>
> This patch builds on the work recently posted by Stefan Berger. It builds
> on top of Stefan's three posted patches:
>
> [PATCH v9] vepa: parsing for 802.1Qb{g|h} XML
> [RFC][PATCH 1/3] vepa+vsi: Introduce dependency on libnl
> [PATCH v3] Add host UUID (to libvirt capabilities)
>
> Stefan's RFC patches 2/3 and 3/3 are incorporated into my patch.
>
> Changes from v3 to v4:
> - move from Stafan's 802.1Qb{g|h} XML v8 to v9
> - move hostuuid and vf index calcs to inside doPortProfileOp8021Qbh
I don't have the latest if_link.h on my system, so I had to make the
changes in the attached patch to get v4 to build and pass make
syntax-check; nothing major. The biggest thing is that getPhysfn is
only called when IFLA_VF_PORT_MAX is defined, so I moved the entire
function into that #ifdef and removed the internal #ifdef; otherwise
the compiler complains about the unused static function.
Dave
> Changes from v2 to v3:
> - remove debug fprintfs
> - use virGetHostUUID (thanks Stefan!)
> - fix compile issue when latest if_link.h isn't available
> - change poll timeout to 10s, at 1/8 intervals
> - if polling times out, log msg and return -ETIMEDOUT
>
> Changes from v1 to v2:
> - Add Stefan's code for getPortProfileStatus
> - Poll for up to 2 secs for port-profile status, at 1/8 sec intervals:
> - if status indicates error, abort openMacvtapTap
> - if status indicates success, exit polling
> - if status is "in-progress" after 2 secs of polling, exit
> polling loop silently, without error
>
> My patch finishes out the 802.1Qbh parts, which Stefan had mostly complete.
> I've tested using the recent kernel updates for VF_PORT netlink msgs and
> enic for Cisco's 10G Ethernet NIC. I tested many VMs, each with several
> direct interfaces, each configured with a port-profile per the XML. VM-to-VM,
> and VM-to-external work as expected. VM-to-VM on same host (using same NIC)
> works same as VM-to-VM where VMs are on diff hosts. I'm able to change
> settings on the port-profile while the VM is running to change the virtual
> port behaviour. For example, adjusting a QoS setting like rate limit. All
> VMs with interfaces using that port-profile immediatly see the effect of the
> change to the port-profile.
>
> I don't have a SR-IOV device to test so source dev is a non-SR-IOV device,
> but most of the code paths include support for specifing the source dev and
> VF index. We'll need to complete this by discovering the PF given the VF
> linkdev. Once we have the PF, we'll also have the VF index. All this info-
> mation is available from sysfs.
>
> Signed-off-by: Scott Feldman <scofeldm at cisco.com>
> ---
> configure.ac | 16 +
> src/qemu/qemu_conf.c | 2
> src/qemu/qemu_driver.c | 4
> src/util/macvtap.c | 778 +++++++++++++++++++++++++++++++++++++++++++++++-
> src/util/macvtap.h | 1
> 5 files changed, 785 insertions(+), 16 deletions(-)
>
>
> diff --git a/configure.ac b/configure.ac
> index 36ba703..885b0ae 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -2005,13 +2005,26 @@ if test "$with_macvtap" != "no" ; then
> fi
> AM_CONDITIONAL([WITH_MACVTAP], [test "$with_macvtap" = "yes"])
>
> +AC_TRY_COMPILE([ #include <sys/socket.h>
> + #include <linux/rtnetlink.h> ],
> + [ int x = IFLA_PORT_MAX; ],
> + [ with_virtualport=yes ],
> + [ with_virtualport=no ])
> +if test "$with_virtualport" = "yes"; then
> + val=1
> +else
> + val=0
> +fi
> +AC_DEFINE_UNQUOTED([WITH_VIRTUALPORT], $val, [whether vsi vepa support is enabled])
> +AM_CONDITIONAL([WITH_VIRTUALPORT], [test "$with_virtualport" = "yes"])
> +
>
> dnl netlink library
>
> LIBNL_CFLAGS=""
> LIBNL_LIBS=""
>
> -if test "$with_macvtap" = "yes"; then
> +if test "$with_macvtap" = "yes" || "$with_virtualport" = "yes"; then
> PKG_CHECK_MODULES([LIBNL], [libnl-1 >= $LIBNL_REQUIRED], [
> ], [
> AC_MSG_ERROR([libnl >= $LIBNL_REQUIRED is required for macvtap support])
> @@ -2084,6 +2097,7 @@ AC_MSG_NOTICE([ Network: $with_network])
> AC_MSG_NOTICE([Libvirtd: $with_libvirtd])
> AC_MSG_NOTICE([ netcf: $with_netcf])
> AC_MSG_NOTICE([ macvtap: $with_macvtap])
> +AC_MSG_NOTICE([virtport: $with_virtualport])
> AC_MSG_NOTICE([])
> AC_MSG_NOTICE([Storage Drivers])
> AC_MSG_NOTICE([])
> diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
> index 111fa6e..95d4c1a 100644
> --- a/src/qemu/qemu_conf.c
> +++ b/src/qemu/qemu_conf.c
> @@ -1505,7 +1505,7 @@ qemudPhysIfaceConnect(virConnectPtr conn,
> if (err) {
> close(rc);
> rc = -1;
> - delMacvtap(net->ifname,
> + delMacvtap(net->ifname, net->data.direct.linkdev,
> &net->data.direct.virtPortProfile);
> }
> }
> diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
> index f02bf3b..f1a0d0e 100644
> --- a/src/qemu/qemu_driver.c
> +++ b/src/qemu/qemu_driver.c
> @@ -3679,7 +3679,7 @@ static void qemudShutdownVMDaemon(struct qemud_driver *driver,
> for (i = 0; i < def->nnets; i++) {
> virDomainNetDefPtr net = def->nets[i];
> if (net->type == VIR_DOMAIN_NET_TYPE_DIRECT)
> - delMacvtap(net->ifname,
> + delMacvtap(net->ifname, net->data.direct.linkdev,
> &net->data.direct.virtPortProfile);
> }
> #endif
> @@ -8369,7 +8369,7 @@ qemudDomainDetachNetDevice(struct qemud_driver *driver,
>
> #if WITH_MACVTAP
> if (detach->type == VIR_DOMAIN_NET_TYPE_DIRECT)
> - delMacvtap(detach->ifname,
> + delMacvtap(detach->ifname, detach->data.direct.linkdev,
> &detach->data.direct.virtPortProfile);
> #endif
>
> diff --git a/src/util/macvtap.c b/src/util/macvtap.c
> index 5cbd02b..d5a08d9 100644
> --- a/src/util/macvtap.c
> +++ b/src/util/macvtap.c
> @@ -27,7 +27,7 @@
>
> #include <config.h>
>
> -#if WITH_MACVTAP
> +#if WITH_MACVTAP || WITH_VIRTUALPORT
>
> # include <stdio.h>
> # include <errno.h>
> @@ -41,6 +41,8 @@
> # include <linux/rtnetlink.h>
> # include <linux/if_tun.h>
>
> +# include <netlink/msg.h>
> +
> # include "util.h"
> # include "memory.h"
> # include "logging.h"
> @@ -48,6 +50,7 @@
> # include "interface.h"
> # include "conf/domain_conf.h"
> # include "virterror_internal.h"
> +# include "uuid.h"
>
> # define VIR_FROM_THIS VIR_FROM_NET
>
> @@ -58,15 +61,23 @@
> # define MACVTAP_NAME_PREFIX "macvtap"
> # define MACVTAP_NAME_PATTERN "macvtap%d"
>
> +# define MICROSEC_PER_SEC (1000 * 1000)
> +
>
> static int associatePortProfileId(const char *macvtap_ifname,
> + const char *linkdev,
> const virVirtualPortProfileDefPtr virtPort,
> - int vf,
> const unsigned char *vmuuid);
>
> static int disassociatePortProfileId(const char *macvtap_ifname,
> + const char *linkdev,
> const virVirtualPortProfileDefPtr virtPort);
>
> +enum virVirtualPortOp {
> + ASSOCIATE = 0x1,
> + DISASSOCIATE = 0x2,
> +};
> +
>
> static int nlOpen(void)
> {
> @@ -159,6 +170,156 @@ err_exit:
> }
>
>
> +# ifdef IFLA_VF_PORT_MAX
> +
> +/**
> + * nlCommWaitSuccess:
> + *
> + * @nlmsg: pointer to netlink message
> + * @nl_grousp: the netlink multicast groups to send to
> + * @respbuf: pointer to pointer where response buffer will be allocated
> + * @respbuflen: pointer to integer holding the size of the response buffer
> + * on return of the function.
> + * @to_usecs: timeout in microseconds to wait for a success message
> + * to be returned
> + *
> + * Send the given message to the netlink multicast group and receive
> + * responses. Skip responses indicating an error and keep on receiving
> + * responses until a success response is returned.
> + * Returns 0 on success, -1 on error. In case of error, no response
> + * buffer will be returned.
> + */
> +static int
> +nlCommWaitSuccess(struct nlmsghdr *nlmsg, int nl_groups,
> + char **respbuf, int *respbuflen, long to_usecs)
> +{
> + int rc = 0;
> + struct sockaddr_nl nladdr = {
> + .nl_family = AF_NETLINK,
> + .nl_pid = getpid(),
> + .nl_groups = nl_groups,
> + };
> + int rcvChunkSize = 1024; // expecting less than that
> + int rcvoffset = 0;
> + ssize_t nbytes;
> + int n;
> + struct timeval tv = {
> + .tv_sec = to_usecs / MICROSEC_PER_SEC,
> + .tv_usec = to_usecs % MICROSEC_PER_SEC,
> + };
> + fd_set rfds;
> + bool gotvalid = false;
> + int fd = nlOpen();
> + static uint32_t seq = 0x1234;
> + uint32_t myseq = seq++;
> + uint32_t mypid = getpid();
> +
> + if (fd < 0)
> + return -1;
> +
> + nlmsg->nlmsg_pid = mypid;
> + nlmsg->nlmsg_seq = myseq;
> + nlmsg->nlmsg_flags |= NLM_F_ACK;
> +
> + nbytes = sendto(fd, (void *)nlmsg, nlmsg->nlmsg_len, 0,
> + (struct sockaddr *)&nladdr, sizeof(nladdr));
> + if (nbytes < 0) {
> + virReportSystemError(errno,
> + "%s", _("cannot send to netlink socket"));
> + rc = -1;
> + goto err_exit;
> + }
> +
> + while (!gotvalid) {
> + rcvoffset = 0;
> + while (1) {
> + socklen_t addrlen = sizeof(nladdr);
> +
> + if (VIR_REALLOC_N(*respbuf, rcvoffset+rcvChunkSize) < 0) {
> + virReportOOMError();
> + rc = -1;
> + goto err_exit;
> + }
> +
> + FD_ZERO(&rfds);
> + FD_SET(fd, &rfds);
> +
> + n = select(fd + 1, &rfds, NULL, NULL, &tv);
> + if (n == 0) {
> + rc = -1;
> + goto err_exit;
> + }
> +
> + nbytes = recvfrom(fd, &((*respbuf)[rcvoffset]), rcvChunkSize, 0,
> + (struct sockaddr *)&nladdr, &addrlen);
> + if (nbytes < 0) {
> + if (errno == EAGAIN || errno == EINTR)
> + continue;
> + virReportSystemError(errno, "%s",
> + _("error receiving from netlink socket"));
> + rc = -1;
> + goto err_exit;
> + }
> + rcvoffset += nbytes;
> + break;
> + }
> + *respbuflen = rcvoffset;
> +
> + /* check message for error */
> + if (*respbuflen > NLMSG_LENGTH(0) && *respbuf != NULL) {
> + struct nlmsghdr *resp = (struct nlmsghdr *)*respbuf;
> + struct nlmsgerr *err;
> +
> + if (resp->nlmsg_pid != mypid ||
> + resp->nlmsg_seq != myseq)
> + continue;
> +
> + /* skip reflected message */
> + if (resp->nlmsg_type & 0x10)
> + continue;
> +
> + switch (resp->nlmsg_type) {
> + case NLMSG_ERROR:
> + err = (struct nlmsgerr *)NLMSG_DATA(resp);
> + if (resp->nlmsg_len >= NLMSG_LENGTH(sizeof(*err))) {
> + if (-err->error != EOPNOTSUPP) {
> + /* assuming error msg from daemon */
> + gotvalid = true;
> + break;
> + }
> + }
> + /* whatever this is, skip it */
> + VIR_FREE(*respbuf);
> + *respbuf = NULL;
> + *respbuflen = 0;
> + break;
> +
> + case NLMSG_DONE:
> + gotvalid = true;
> + break;
> +
> + default:
> + VIR_FREE(*respbuf);
> + *respbuf = NULL;
> + *respbuflen = 0;
> + break;
> + }
> + }
> + }
> +
> +err_exit:
> + if (rc == -1) {
> + VIR_FREE(*respbuf);
> + *respbuf = NULL;
> + *respbuflen = 0;
> + }
> +
> + nlClose(fd);
> + return rc;
> +}
> +
> +#endif
> +
> static struct rtattr *
> rtattrCreate(char *buffer, int bufsize, int type,
> const void *data, int datalen)
> @@ -204,6 +365,8 @@ nlAppend(struct nlmsghdr *nlm, int totlen, const void *data, int datalen)
> }
>
>
> +# if WITH_MACVTAP
> +
> static int
> link_add(const char *type,
> const unsigned char *macaddress, int macaddrsize,
> @@ -655,8 +818,8 @@ create_name:
> }
>
> if (associatePortProfileId(cr_ifname,
> + linkdev,
> virtPortProfile,
> - -1,
> vmuuid) != 0) {
> rc = -1;
> goto link_del_exit;
> @@ -689,6 +852,7 @@ create_name:
>
> disassociate_exit:
> disassociatePortProfileId(cr_ifname,
> + linkdev,
> virtPortProfile);
>
> link_del_exit:
> @@ -701,6 +865,7 @@ link_del_exit:
> /**
> * delMacvtap:
> * @ifname : The name of the macvtap interface
> + * @linkdev: The interface name of the NIC to connect to the external bridge
> * @virtPortProfile: pointer to object holding the virtual port profile data
> *
> * Delete an interface given its name. Disassociate
> @@ -709,24 +874,603 @@ link_del_exit:
> */
> void
> delMacvtap(const char *ifname,
> + const char *linkdev,
> virVirtualPortProfileDefPtr virtPortProfile)
> {
> if (ifname) {
> disassociatePortProfileId(ifname,
> + linkdev,
> virtPortProfile);
> link_del(ifname);
> }
> }
>
> -#endif
> +# endif
> +
> +
> +# ifdef IFLA_PORT_MAX
> +
> +static struct nla_policy ifla_policy[IFLA_MAX + 1] =
> +{
> + [IFLA_VF_PORTS] = { .type = NLA_NESTED },
> +};
> +
> +static struct nla_policy ifla_vf_ports_policy[IFLA_VF_PORT_MAX + 1] =
> +{
> + [IFLA_VF_PORT] = { .type = NLA_NESTED },
> +};
> +
> +static struct nla_policy ifla_port_policy[IFLA_PORT_MAX + 1] =
> +{
> + [IFLA_PORT_RESPONSE] = { .type = NLA_U16 },
> +};
> +
> +
> +static int
> +link_dump(int ifindex, struct nlattr **tb, char **recvbuf)
> +{
> + int rc = 0;
> + char nlmsgbuf[256] = { 0, };
> + struct nlmsghdr *nlm = (struct nlmsghdr *)nlmsgbuf, *resp;
> + struct nlmsgerr *err;
> + struct ifinfomsg i = {
> + .ifi_family = AF_UNSPEC,
> + .ifi_index = ifindex
> + };
> + int recvbuflen;
> +
> + *recvbuf = NULL;
> +
> + nlInit(nlm, NLM_F_REQUEST, RTM_GETLINK);
> +
> + if (!nlAppend(nlm, sizeof(nlmsgbuf), &i, sizeof(i)))
> + goto buffer_too_small;
> +
> + if (nlComm(nlm, recvbuf, &recvbuflen) < 0)
> + return -1;
> +
> + if (recvbuflen < NLMSG_LENGTH(0) || *recvbuf == NULL)
> + goto malformed_resp;
>
> + resp = (struct nlmsghdr *)*recvbuf;
> +
> + switch (resp->nlmsg_type) {
> + case NLMSG_ERROR:
> + err = (struct nlmsgerr *)NLMSG_DATA(resp);
> + if (resp->nlmsg_len < NLMSG_LENGTH(sizeof(*err)))
> + goto malformed_resp;
> +
> + switch (-err->error) {
> + case 0:
> + break;
> +
> + default:
> + virReportSystemError(-err->error,
> + _("error dumping %d interface"),
> + ifindex);
> + rc = -1;
> + }
> + break;
> +
> + case GENL_ID_CTRL:
> + case NLMSG_DONE:
> + if (nlmsg_parse(resp, sizeof(struct ifinfomsg),
> + tb, IFLA_MAX, ifla_policy)) {
> + goto malformed_resp;
> + }
> + break;
> +
> + default:
> + goto malformed_resp;
> + }
> +
> + if (rc != 0)
> + VIR_FREE(*recvbuf);
> +
> + return rc;
> +
> +malformed_resp:
> + macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("malformed netlink response message"));
> + VIR_FREE(*recvbuf);
> + return -1;
> +
> +buffer_too_small:
> + macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("internal buffer is too small"));
> + return -1;
> +}
> +
> +
> +static int
> +getPortProfileStatus(struct nlattr **tb, int32_t vf, uint16_t *status)
> +{
> + int rc = 1;
> + const char *msg = NULL;
> + struct nlattr *tb2[IFLA_VF_PORT_MAX + 1],
> + *tb3[IFLA_PORT_MAX+1];
> +
> + if (vf == PORT_SELF_VF) {
> + if (tb[IFLA_PORT_SELF]) {
> + if (nla_parse_nested(tb3, IFLA_PORT_MAX, tb[IFLA_PORT_SELF],
> + ifla_port_policy)) {
> + msg = _("error parsing nested IFLA_VF_PORT part");
> + goto err_exit;
> + }
> + }
> + } else {
> + if (tb[IFLA_VF_PORTS]) {
> + if (nla_parse_nested(tb2, IFLA_VF_PORT_MAX, tb[IFLA_VF_PORTS],
> + ifla_vf_ports_policy)) {
> + msg = _("error parsing nested IFLA_VF_PORTS part");
> + goto err_exit;
> + }
> + if (tb2[IFLA_VF_PORT]) {
> + if (nla_parse_nested(tb3, IFLA_PORT_MAX, tb2[IFLA_VF_PORT],
> + ifla_port_policy)) {
> + msg = _("error parsing nested IFLA_VF_PORT part");
> + goto err_exit;
> + }
> + }
> + }
> + }
> +
> + if (tb3[IFLA_PORT_RESPONSE]) {
> + *status = *(uint16_t *)RTA_DATA(tb3[IFLA_PORT_RESPONSE]);
> + rc = 0;
> + } else {
> + msg = _("no IFLA_PORT_RESPONSE found in netlink message");
> + goto err_exit;
> + }
> +
> +err_exit:
> + if (msg)
> + macvtapError(VIR_ERR_INTERNAL_ERROR, "%s", msg);
> +
> + return rc;
> +}
> +
> +
> +static int
> +doPortProfileOpSetLink(bool multicast,
> + int ifindex,
> + const char *profileId,
> + struct ifla_port_vsi *portVsi,
> + const unsigned char *instanceId,
> + const unsigned char *hostUUID,
> + int32_t vf,
> + uint8_t op)
> +{
> + int rc = 0;
> + char nlmsgbuf[256];
> + struct nlmsghdr *nlm = (struct nlmsghdr *)nlmsgbuf, *resp;
> + struct nlmsgerr *err;
> + char rtattbuf[64];
> + struct rtattr *rta, *vfports, *vfport;
> + struct ifinfomsg ifinfo = {
> + .ifi_family = AF_UNSPEC,
> + .ifi_index = ifindex,
> + };
> + char *recvbuf = NULL;
> + int recvbuflen = 0;
> +
> + memset(&nlmsgbuf, 0, sizeof(nlmsgbuf));
> +
> + nlInit(nlm, NLM_F_REQUEST, RTM_SETLINK);
> +
> + if (!nlAppend(nlm, sizeof(nlmsgbuf), &ifinfo, sizeof(ifinfo)))
> + goto buffer_too_small;
> +
> + if (vf == PORT_SELF_VF) {
> + rta = rtattrCreate(rtattbuf, sizeof(rtattbuf), IFLA_PORT_SELF, NULL, 0);
> + } else {
> + rta = rtattrCreate(rtattbuf, sizeof(rtattbuf), IFLA_VF_PORTS, NULL, 0);
> + if (!rta)
> + goto buffer_too_small;
> +
> + if (!(vfports = nlAppend(nlm, sizeof(nlmsgbuf),
> + rtattbuf, rta->rta_len)))
> + goto buffer_too_small;
> +
> + /* beging nesting vfports */
> + rta = rtattrCreate(rtattbuf, sizeof(rtattbuf), IFLA_VF_PORT, NULL, 0);
> + }
> +
> + if (!rta)
> + goto buffer_too_small;
> +
> + if (!(vfport = nlAppend(nlm, sizeof(nlmsgbuf), rtattbuf, rta->rta_len)))
> + goto buffer_too_small;
> +
> + if (profileId) {
> + rta = rtattrCreate(rtattbuf, sizeof(rtattbuf), IFLA_PORT_PROFILE,
> + profileId, strlen(profileId) + 1);
> + if (!rta)
> + goto buffer_too_small;
> +
> + if (!nlAppend(nlm, sizeof(nlmsgbuf), rtattbuf, rta->rta_len))
> + goto buffer_too_small;
> + }
> +
> + if (portVsi) {
> + rta = rtattrCreate(rtattbuf, sizeof(rtattbuf), IFLA_PORT_VSI_TYPE,
> + portVsi, sizeof(*portVsi));
> + if (!rta)
> + goto buffer_too_small;
> +
> + if (!nlAppend(nlm, sizeof(nlmsgbuf), rtattbuf, rta->rta_len))
> + goto buffer_too_small;
> + }
> +
> + if (instanceId) {
> + rta = rtattrCreate(rtattbuf, sizeof(rtattbuf), IFLA_PORT_INSTANCE_UUID,
> + instanceId, VIR_UUID_BUFLEN);
> + if (!rta)
> + goto buffer_too_small;
> +
> + if (!nlAppend(nlm, sizeof(nlmsgbuf), rtattbuf, rta->rta_len))
> + goto buffer_too_small;
> + }
> +
> + if (hostUUID) {
> + rta = rtattrCreate(rtattbuf, sizeof(rtattbuf), IFLA_PORT_HOST_UUID,
> + hostUUID, VIR_UUID_BUFLEN);
> + if (!rta)
> + goto buffer_too_small;
> +
> + if (!nlAppend(nlm, sizeof(nlmsgbuf), rtattbuf, rta->rta_len))
> + goto buffer_too_small;
> + }
> +
> + if (vf != PORT_SELF_VF) {
> + rta = rtattrCreate(rtattbuf, sizeof(rtattbuf), IFLA_PORT_VF,
> + &vf, sizeof(vf));
> + if (!rta)
> + goto buffer_too_small;
> +
> + if (!nlAppend(nlm, sizeof(nlmsgbuf), rtattbuf, rta->rta_len))
> + goto buffer_too_small;
> + }
> +
> + rta = rtattrCreate(rtattbuf, sizeof(rtattbuf), IFLA_PORT_REQUEST,
> + &op, sizeof(op));
> + if (!rta)
> + goto buffer_too_small;
> +
> + if (!nlAppend(nlm, sizeof(nlmsgbuf), rtattbuf, rta->rta_len))
> + goto buffer_too_small;
> +
> + /* end nesting of vport */
> + vfport->rta_len = (char *)nlm + nlm->nlmsg_len - (char *)vfport;
> +
> + if (vf != PORT_SELF_VF) {
> + /* end nesting of vfports */
> + vfports->rta_len = (char *)nlm + nlm->nlmsg_len - (char *)vfports;
> + }
> +
> + if (!multicast) {
> + if (nlComm(nlm, &recvbuf, &recvbuflen) < 0)
> + return -1;
> + } else {
> + if (nlCommWaitSuccess(nlm, RTMGRP_LINK, &recvbuf, &recvbuflen,
> + 5 * MICROSEC_PER_SEC) < 0)
> + return -1;
> + }
> +
> + if (recvbuflen < NLMSG_LENGTH(0) || recvbuf == NULL)
> + goto malformed_resp;
> +
> + resp = (struct nlmsghdr *)recvbuf;
> +
> + switch (resp->nlmsg_type) {
> + case NLMSG_ERROR:
> + err = (struct nlmsgerr *)NLMSG_DATA(resp);
> + if (resp->nlmsg_len < NLMSG_LENGTH(sizeof(*err)))
> + goto malformed_resp;
> +
> + switch (-err->error) {
> + case 0:
> + break;
> +
> + default:
> + virReportSystemError(-err->error,
> + _("error during virtual port configuration of ifindex %d"),
> + ifindex);
> + rc = -1;
> + }
> + break;
> +
> + case NLMSG_DONE:
> + break;
> +
> + default:
> + goto malformed_resp;
> + }
> +
> + VIR_FREE(recvbuf);
> +
> + return rc;
> +
> +malformed_resp:
> + macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("malformed netlink response message"));
> + VIR_FREE(recvbuf);
> + return -1;
> +
> +buffer_too_small:
> + macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("internal buffer is too small"));
> + return -1;
> +}
> +
> +
> +static int
> +doPortProfileOpCommon(bool multicast,
> + int ifindex,
> + const char *profileId,
> + struct ifla_port_vsi *portVsi,
> + const unsigned char *instanceId,
> + const unsigned char *hostUUID,
> + int32_t vf,
> + uint8_t op)
> +{
> + int rc;
> + char *recvbuf = NULL;
> + struct nlattr *tb[IFLA_MAX + 1];
> + int repeats = 80;
> + uint16_t status = 0;
> +
> + rc = doPortProfileOpSetLink(multicast,
> + ifindex,
> + profileId,
> + portVsi,
> + instanceId,
> + hostUUID,
> + vf,
> + op);
> +
> + if (rc != 0) {
> + macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("sending of PortProfileRequest failed.\n"));
> + return rc;
> + }
> +
> + if (!multicast) {
> + while (--repeats) {
> + rc = link_dump(ifindex, tb, &recvbuf);
> + if (rc)
> + goto err_exit;
> + rc = getPortProfileStatus(tb, vf, &status);
> + if (rc == 0) {
> + if (status == PORT_PROFILE_RESPONSE_SUCCESS ||
> + status == PORT_VDP_RESPONSE_SUCCESS) {
> + break;
> + } else if (status == PORT_PROFILE_RESPONSE_INPROGRESS) {
> + // keep trying...
> + } else {
> + virReportSystemError(EINVAL,
> + _("error %d during port-profile setlink on ifindex %d"),
> + status, ifindex);
> + rc = 1;
> + break;
> + }
> + }
> + usleep(125000);
> +
> + VIR_FREE(recvbuf);
> + }
> + }
> +
> + if (status == PORT_PROFILE_RESPONSE_INPROGRESS) {
> + macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("port-profile setlink timed out"));
> + rc = -ETIMEDOUT;
> + }
> +
> +err_exit:
> + VIR_FREE(recvbuf);
> +
> + return rc;
> +}
> +
> +# endif /* IFLA_PORT_MAX */
> +
> +static int
> +doPortProfileOp8021Qbg(const char *ifname,
> + const virVirtualPortProfileDefPtr virtPort,
> + enum virVirtualPortOp virtPortOp)
> +{
> + int rc;
> +
> +# ifndef IFLA_VF_PORT_MAX
> +
> + (void)ifname;
> + (void)virtPort;
> + (void)vf;
> + (void)virtPortOp;
> + macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("Kernel VF Port support was missing at compile time."));
> + rc = 1;
> +
> +# else /* IFLA_VF_PORT_MAX */
> +
> + int op = PORT_REQUEST_ASSOCIATE;
> + struct ifla_port_vsi portVsi = {
> + .vsi_mgr_id = virtPort->u.virtPort8021Qbg.managerID,
> + .vsi_type_version = virtPort->u.virtPort8021Qbg.typeIDVersion,
> + };
> + bool multicast = true;
> + int ifindex;
> +
> + if (ifaceGetIndex(true, ifname, &ifindex) != 0) {
> + rc = 1;
> + goto err_exit;
> + }
> +
> + portVsi.vsi_type_id[2] = virtPort->u.virtPort8021Qbg.typeID >> 16;
> + portVsi.vsi_type_id[1] = virtPort->u.virtPort8021Qbg.typeID >> 8;
> + portVsi.vsi_type_id[0] = virtPort->u.virtPort8021Qbg.typeID;
> +
> + switch (virtPortOp) {
> + case ASSOCIATE:
> + op = PORT_REQUEST_ASSOCIATE;
> + break;
> + case DISASSOCIATE:
> + op = PORT_REQUEST_DISASSOCIATE;
> + break;
> + default:
> + macvtapError(VIR_ERR_INTERNAL_ERROR,
> + _("operation type %d not supported"), op);
> + rc = 1;
> + goto err_exit;
> + }
> +
> + rc = doPortProfileOpCommon(multicast, ifindex,
> + NULL,
> + &portVsi,
> + virtPort->u.virtPort8021Qbg.instanceID,
> + NULL,
> + PORT_SELF_VF,
> + op);
> +
> +err_exit:
> +
> +# endif /* IFLA_VF_PORT_MAX */
> +
> + return rc;
> +}
> +
> +
> +static int
> +getPhysfn(const char *linkdev,
> + int32_t *vf,
> + char **physfndev)
> +{
> + int rc = 0;
> +
> +# ifndef IFLA_VF_PORT_MAX
> +
> + (void)linkdev;
> + (void)vf;
> + (void)physfndev;
> + macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("Kernel VF Port support was missing at compile time."));
> + rc = 1;
> +
> +# else /* IFLA_VF_PORT_MAX */
> +
> + bool virtfn = false;
> +
> + if (virtfn) {
> +
> + // XXX: if linkdev is SR-IOV VF, then set vf = VF index
> + // XXX: and set linkdev = PF device
> + // XXX: need to use get_physical_function_linux() or
> + // XXX: something like that to get PF
> + // XXX: device and figure out VF index
> +
> + rc = 1;
> +
> + } else {
> +
> + /* Not SR-IOV VF: physfndev is linkdev and VF index
> + * refers to linkdev self
> + */
> +
> + *vf = PORT_SELF_VF;
> + *physfndev = (char *)linkdev;
> + }
> +
> +# endif /* IFLA_VF_PORT_MAX */
> +
> + return rc;
> +}
> +
> +
> +static int
> +doPortProfileOp8021Qbh(const char *ifname,
> + const virVirtualPortProfileDefPtr virtPort,
> + const unsigned char *vm_uuid,
> + enum virVirtualPortOp virtPortOp)
> +{
> + int rc;
> +
> +# ifndef IFLA_VF_PORT_MAX
> +
> + (void)ifname;
> + (void)virtPort;
> + (void)vm_uuid;
> + (void)virtPortOp;
> + macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("Kernel VF Port support was missing at compile time."));
> + rc = 1;
> +
> +# else /* IFLA_VF_PORT_MAX */
> +
> + char *physfndev;
> + unsigned char hostuuid[VIR_UUID_BUFLEN];
> + int32_t vf;
> + int op = PORT_REQUEST_ASSOCIATE;
> + bool multicast = false;
> + int ifindex;
> +
> + rc = virGetHostUUID(hostuuid);
> + if (rc)
> + goto err_exit;
> +
> + rc = getPhysfn(ifname, &vf, &physfndev);
> + if (rc)
> + goto err_exit;
> +
> + if (ifaceGetIndex(true, physfndev, &ifindex) != 0) {
> + rc = 1;
> + goto err_exit;
> + }
> +
> + switch (virtPortOp) {
> + case ASSOCIATE:
> + op = PORT_REQUEST_ASSOCIATE;
> + break;
> + case DISASSOCIATE:
> + op = PORT_REQUEST_DISASSOCIATE;
> + break;
> + default:
> + macvtapError(VIR_ERR_INTERNAL_ERROR,
> + _("operation type %d not supported"), op);
> + rc = 1;
> + goto err_exit;
> + }
> +
> + rc = doPortProfileOpCommon(multicast, ifindex,
> + virtPort->u.virtPort8021Qbh.profileID,
> + NULL,
> + vm_uuid,
> + hostuuid,
> + vf,
> + op);
> +
> + switch (virtPortOp) {
> + case ASSOCIATE:
> + ifaceUp(ifname);
> + break;
> + case DISASSOCIATE:
> + ifaceDown(ifname);
> + break;
> + }
> +
> +err_exit:
> +
> +# endif /* IFLA_VF_PORT_MAX */
> +
> + return rc;
> +}
>
> /**
> * associatePortProfile
> *
> * @macvtap_ifname: The name of the macvtap device
> + * @linkdev: The link device in case of macvtap
> * @virtPort: pointer to the object holding port profile parameters
> - * @vf: virtual function number, -1 if to be ignored
> * @vmuuid : the UUID of the virtual machine
> *
> * Associate a port on a swtich with a profile. This function
> @@ -740,15 +1484,14 @@ delMacvtap(const char *ifname,
> */
> static int
> associatePortProfileId(const char *macvtap_ifname,
> + const char *linkdev,
> const virVirtualPortProfileDefPtr virtPort,
> - int vf,
> const unsigned char *vmuuid)
> {
> int rc = 0;
> +
> VIR_DEBUG("Associating port profile '%p' on link device '%s'",
> virtPort, macvtap_ifname);
> - (void)vf;
> - (void)vmuuid;
>
> switch (virtPort->virtPortType) {
> case VIR_VIRTUALPORT_NONE:
> @@ -756,11 +1499,14 @@ associatePortProfileId(const char *macvtap_ifname,
> break;
>
> case VIR_VIRTUALPORT_8021QBG:
> -
> + rc = doPortProfileOp8021Qbg(macvtap_ifname, virtPort,
> + ASSOCIATE);
> break;
>
> case VIR_VIRTUALPORT_8021QBH:
> -
> + rc = doPortProfileOp8021Qbh(linkdev, virtPort,
> + vmuuid,
> + ASSOCIATE);
> break;
> }
>
> @@ -772,6 +1518,7 @@ associatePortProfileId(const char *macvtap_ifname,
> * disassociatePortProfile
> *
> * @macvtap_ifname: The name of the macvtap device
> + * @linkdev: The link device in case of macvtap
> * @virtPort: point to object holding port profile parameters
> *
> * Returns 0 in case of success, != 0 otherwise with error
> @@ -779,9 +1526,11 @@ associatePortProfileId(const char *macvtap_ifname,
> */
> static int
> disassociatePortProfileId(const char *macvtap_ifname,
> + const char *linkdev,
> const virVirtualPortProfileDefPtr virtPort)
> {
> int rc = 0;
> +
> VIR_DEBUG("Disassociating port profile id '%p' on link device '%s' ",
> virtPort, macvtap_ifname);
>
> @@ -791,13 +1540,18 @@ disassociatePortProfileId(const char *macvtap_ifname,
> break;
>
> case VIR_VIRTUALPORT_8021QBG:
> -
> + rc = doPortProfileOp8021Qbg(macvtap_ifname, virtPort,
> + DISASSOCIATE);
> break;
>
> case VIR_VIRTUALPORT_8021QBH:
> -
> + rc = doPortProfileOp8021Qbh(linkdev, virtPort,
> + NULL,
> + DISASSOCIATE);
> break;
> }
>
> return rc;
> }
> +
> +#endif
> diff --git a/src/util/macvtap.h b/src/util/macvtap.h
> index ae11c5c..35db31c 100644
> --- a/src/util/macvtap.h
> +++ b/src/util/macvtap.h
> @@ -72,6 +72,7 @@ int openMacvtapTap(const char *ifname,
> char **res_ifname);
>
> void delMacvtap(const char *ifname,
> + const char *linkdev,
> virVirtualPortProfileDefPtr virtPortProfile);
>
> # endif /* WITH_MACVTAP */
>
> --
> libvir-list mailing list
> libvir-list at redhat.com
> https://www.redhat.com/mailman/listinfo/libvir-list
-------------- next part --------------
>From 7b0c513288ad3b0740ac05d9bf47d4320e385639 Mon Sep 17 00:00:00 2001
From: David Allan <dallan at redhat.com>
Date: Mon, 24 May 2010 22:43:54 -0400
Subject: [PATCH 1/1] Minor fixes to compile ifndef IFLA_VF_PORT_MAX
* Make getPhysfn entirely within #ifdef IFLA_VF_PORT_MAX as it's only
called when IFLA_VF_PORT_MAX is defined
* Fix a few nits found by make syntax check (newline in error message
and preprocessor indentation)
---
src/util/macvtap.c | 22 ++++------------------
1 files changed, 4 insertions(+), 18 deletions(-)
diff --git a/src/util/macvtap.c b/src/util/macvtap.c
index d5a08d9..8e4bea3 100644
--- a/src/util/macvtap.c
+++ b/src/util/macvtap.c
@@ -318,7 +318,7 @@ err_exit:
return rc;
}
-#endif
+# endif
static struct rtattr *
rtattrCreate(char *buffer, int bufsize, int type,
@@ -1231,7 +1231,7 @@ doPortProfileOpCommon(bool multicast,
if (rc != 0) {
macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("sending of PortProfileRequest failed.\n"));
+ _("sending of PortProfileRequest failed."));
return rc;
}
@@ -1286,7 +1286,6 @@ doPortProfileOp8021Qbg(const char *ifname,
(void)ifname;
(void)virtPort;
- (void)vf;
(void)virtPortOp;
macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Kernel VF Port support was missing at compile time."));
@@ -1341,24 +1340,13 @@ err_exit:
}
+# ifdef IFLA_VF_PORT_MAX
static int
getPhysfn(const char *linkdev,
int32_t *vf,
char **physfndev)
{
int rc = 0;
-
-# ifndef IFLA_VF_PORT_MAX
-
- (void)linkdev;
- (void)vf;
- (void)physfndev;
- macvtapError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("Kernel VF Port support was missing at compile time."));
- rc = 1;
-
-# else /* IFLA_VF_PORT_MAX */
-
bool virtfn = false;
if (virtfn) {
@@ -1381,11 +1369,9 @@ getPhysfn(const char *linkdev,
*physfndev = (char *)linkdev;
}
-# endif /* IFLA_VF_PORT_MAX */
-
return rc;
}
-
+# endif /* IFLA_VF_PORT_MAX */
static int
doPortProfileOp8021Qbh(const char *ifname,
--
1.7.0.1
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