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https://gitlab.com/libvirt/libvirt.git
synced 2025-04-01 20:05:19 +00:00
Move the low level macvlan creation APIs
Move the low level macvlan creation APIs into the virnetdevmacvlan.c file where they more naturally belong * util/interface.c, util/interface.h: Remove virNetDevMacVLanCreate and virNetDevMacVLanDelete * util/virnetdevmacvlan.c, util/virnetdevmacvlan.h: Add virNetDevMacVLanCreate and virNetDevMacVLanDelete
This commit is contained in:
Daniel P. Berrange
parent
57f0de4c26
commit
d2fed854c0
@ -312,276 +312,6 @@ ifaceGetIPAddress(const char *ifname ATTRIBUTE_UNUSED,
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#endif /* __linux__ */
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/**
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* virNetDevMacVLanCreate:
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*
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* @ifname: The name the interface is supposed to have; optional parameter
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* @type: The type of device, i.e., "macvtap"
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* @macaddress: The MAC address of the device
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* @srcdev: The name of the 'link' device
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* @macvlan_mode: The macvlan mode to use
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* @retry: Pointer to integer that will be '1' upon return if an interface
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* with the same name already exists and it is worth to try
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* again with a different name
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*
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* Create a macvtap device with the given properties.
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*
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* Returns 0 on success, -1 on fatal error.
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*/
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#if defined(__linux__) && WITH_MACVTAP
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int
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virNetDevMacVLanCreate(const char *ifname,
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const char *type,
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const unsigned char *macaddress,
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const char *srcdev,
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uint32_t macvlan_mode,
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int *retry)
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{
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int rc = 0;
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struct nlmsghdr *resp;
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struct nlmsgerr *err;
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struct ifinfomsg ifinfo = { .ifi_family = AF_UNSPEC };
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int ifindex;
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unsigned char *recvbuf = NULL;
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unsigned int recvbuflen;
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struct nl_msg *nl_msg;
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struct nlattr *linkinfo, *info_data;
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if (ifaceGetIndex(true, srcdev, &ifindex) < 0)
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return -1;
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*retry = 0;
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nl_msg = nlmsg_alloc_simple(RTM_NEWLINK,
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NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
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if (!nl_msg) {
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virReportOOMError();
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return -1;
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}
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if (nlmsg_append(nl_msg, &ifinfo, sizeof(ifinfo), NLMSG_ALIGNTO) < 0)
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goto buffer_too_small;
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if (nla_put_u32(nl_msg, IFLA_LINK, ifindex) < 0)
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goto buffer_too_small;
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if (nla_put(nl_msg, IFLA_ADDRESS, VIR_MAC_BUFLEN, macaddress) < 0)
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goto buffer_too_small;
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if (ifname &&
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nla_put(nl_msg, IFLA_IFNAME, strlen(ifname)+1, ifname) < 0)
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goto buffer_too_small;
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if (!(linkinfo = nla_nest_start(nl_msg, IFLA_LINKINFO)))
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goto buffer_too_small;
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if (nla_put(nl_msg, IFLA_INFO_KIND, strlen(type), type) < 0)
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goto buffer_too_small;
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if (macvlan_mode > 0) {
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if (!(info_data = nla_nest_start(nl_msg, IFLA_INFO_DATA)))
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goto buffer_too_small;
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if (nla_put(nl_msg, IFLA_MACVLAN_MODE, sizeof(macvlan_mode),
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&macvlan_mode) < 0)
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goto buffer_too_small;
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nla_nest_end(nl_msg, info_data);
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}
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nla_nest_end(nl_msg, linkinfo);
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if (nlComm(nl_msg, &recvbuf, &recvbuflen, 0) < 0) {
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rc = -1;
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goto cleanup;
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}
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if (recvbuflen < NLMSG_LENGTH(0) || recvbuf == NULL)
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goto malformed_resp;
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resp = (struct nlmsghdr *)recvbuf;
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switch (resp->nlmsg_type) {
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case NLMSG_ERROR:
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err = (struct nlmsgerr *)NLMSG_DATA(resp);
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if (resp->nlmsg_len < NLMSG_LENGTH(sizeof(*err)))
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goto malformed_resp;
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switch (err->error) {
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case 0:
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break;
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case -EEXIST:
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*retry = 1;
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rc = -1;
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break;
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default:
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virReportSystemError(-err->error,
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_("error creating %s type of interface"),
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type);
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rc = -1;
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}
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break;
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case NLMSG_DONE:
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break;
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default:
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goto malformed_resp;
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}
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cleanup:
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nlmsg_free(nl_msg);
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VIR_FREE(recvbuf);
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return rc;
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malformed_resp:
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nlmsg_free(nl_msg);
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ifaceError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("malformed netlink response message"));
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VIR_FREE(recvbuf);
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return -1;
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buffer_too_small:
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nlmsg_free(nl_msg);
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ifaceError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("allocated netlink buffer is too small"));
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return -1;
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}
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#else
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int virNetDevMacVLanCreate(const char *ifname ATTRIBUTE_UNUSED,
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const char *type ATTRIBUTE_UNUSED,
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const unsigned char *macaddress ATTRIBUTE_UNUSED,
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const char *srcdev ATTRIBUTE_UNUSED,
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uint32_t macvlan_mode ATTRIBUTE_UNUSED,
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int *retry ATTRIBUTE_UNUSED)
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{
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ifaceError(VIR_ERR_INTERNAL_ERROR, "%s",
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# if defined(__linux__) && !WITH_MACVTAP
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_("ifaceMacvtapLinkAdd is not supported since the include "
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"files were too old"));
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# else
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_("ifaceMacvtapLinkAdd is not supported on non-linux "
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"platforms"));
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# endif
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return -1;
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}
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#endif
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/**
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* virNetDevMacVLanDelete:
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*
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* @ifname: Name of the interface
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*
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* Tear down an interface with the given name.
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*
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* Returns 0 on success, -1 on fatal error.
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*/
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#if defined( __linux__) && WITH_MACVTAP
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int virNetDevMacVLanDelete(const char *ifname)
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{
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int rc = 0;
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struct nlmsghdr *resp;
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struct nlmsgerr *err;
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struct ifinfomsg ifinfo = { .ifi_family = AF_UNSPEC };
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unsigned char *recvbuf = NULL;
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unsigned int recvbuflen;
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struct nl_msg *nl_msg;
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nl_msg = nlmsg_alloc_simple(RTM_DELLINK,
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NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
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if (!nl_msg) {
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virReportOOMError();
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return -1;
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}
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if (nlmsg_append(nl_msg, &ifinfo, sizeof(ifinfo), NLMSG_ALIGNTO) < 0)
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goto buffer_too_small;
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if (nla_put(nl_msg, IFLA_IFNAME, strlen(ifname)+1, ifname) < 0)
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goto buffer_too_small;
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if (nlComm(nl_msg, &recvbuf, &recvbuflen, 0) < 0) {
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rc = -1;
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goto cleanup;
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}
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if (recvbuflen < NLMSG_LENGTH(0) || recvbuf == NULL)
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goto malformed_resp;
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resp = (struct nlmsghdr *)recvbuf;
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switch (resp->nlmsg_type) {
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case NLMSG_ERROR:
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err = (struct nlmsgerr *)NLMSG_DATA(resp);
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if (resp->nlmsg_len < NLMSG_LENGTH(sizeof(*err)))
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goto malformed_resp;
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if (err->error) {
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virReportSystemError(-err->error,
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_("error destroying %s interface"),
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ifname);
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rc = -1;
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}
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break;
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case NLMSG_DONE:
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break;
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default:
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goto malformed_resp;
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}
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cleanup:
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nlmsg_free(nl_msg);
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VIR_FREE(recvbuf);
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return rc;
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malformed_resp:
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nlmsg_free(nl_msg);
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ifaceError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("malformed netlink response message"));
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VIR_FREE(recvbuf);
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return -1;
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buffer_too_small:
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nlmsg_free(nl_msg);
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ifaceError(VIR_ERR_INTERNAL_ERROR, "%s",
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_("allocated netlink buffer is too small"));
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return -1;
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}
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#else
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int virNetDevMacVLanDelete(const char *ifname ATTRIBUTE_UNUSED)
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{
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ifaceError(VIR_ERR_INTERNAL_ERROR, "%s",
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# if defined(__linux__) && !WITH_MACVTAP
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_("ifaceLinkDel is not supported since the include files "
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"were too old"));
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# else
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_("ifaceLinkDel is not supported on non-linux platforms"));
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# endif
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return -1;
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}
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#endif
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#if defined(__linux__) && defined(IFLA_PORT_MAX)
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@ -39,18 +39,6 @@ int ifaceGetVlanID(const char *vlanifname, int *vlanid);
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int ifaceGetIPAddress(const char *ifname, virSocketAddrPtr addr);
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int virNetDevMacVLanCreate(const char *ifname,
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const char *type,
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const unsigned char *macaddress,
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const char *srcdev,
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uint32_t macvlan_mode,
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int *retry)
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ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(4)
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ATTRIBUTE_RETURN_CHECK;
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int virNetDevMacVLanDelete(const char *ifname)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
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int ifaceMacvtapLinkDump(bool nltarget_kernel, const char *ifname, int ifindex,
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struct nlattr **tb, unsigned char **recvbuf,
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uint32_t (*getPidFunc)(void));
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@ -34,7 +34,7 @@
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#define VIR_FROM_THIS VIR_FROM_NET
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#define macvtapError(code, ...) \
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#define virNetDevError(code, ...) \
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virReportErrorHelper(VIR_FROM_NET, code, __FILE__, \
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__FUNCTION__, __LINE__, __VA_ARGS__)
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@ -73,6 +73,235 @@ VIR_ENUM_IMPL(virNetDevMacVLanMode, VIR_NETDEV_MACVLAN_MODE_LAST,
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# define MACVTAP_NAME_PREFIX "macvtap"
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# define MACVTAP_NAME_PATTERN "macvtap%d"
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/**
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* virNetDevMacVLanCreate:
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*
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* @ifname: The name the interface is supposed to have; optional parameter
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* @type: The type of device, i.e., "macvtap"
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* @macaddress: The MAC address of the device
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* @srcdev: The name of the 'link' device
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* @macvlan_mode: The macvlan mode to use
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* @retry: Pointer to integer that will be '1' upon return if an interface
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* with the same name already exists and it is worth to try
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* again with a different name
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*
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* Create a macvtap device with the given properties.
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*
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* Returns 0 on success, -1 on fatal error.
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*/
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int
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virNetDevMacVLanCreate(const char *ifname,
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const char *type,
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const unsigned char *macaddress,
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const char *srcdev,
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uint32_t macvlan_mode,
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int *retry)
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{
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int rc = 0;
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struct nlmsghdr *resp;
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struct nlmsgerr *err;
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struct ifinfomsg ifinfo = { .ifi_family = AF_UNSPEC };
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int ifindex;
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unsigned char *recvbuf = NULL;
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unsigned int recvbuflen;
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struct nl_msg *nl_msg;
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struct nlattr *linkinfo, *info_data;
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if (ifaceGetIndex(true, srcdev, &ifindex) < 0)
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return -1;
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*retry = 0;
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nl_msg = nlmsg_alloc_simple(RTM_NEWLINK,
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NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
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if (!nl_msg) {
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virReportOOMError();
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return -1;
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}
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if (nlmsg_append(nl_msg, &ifinfo, sizeof(ifinfo), NLMSG_ALIGNTO) < 0)
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goto buffer_too_small;
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if (nla_put_u32(nl_msg, IFLA_LINK, ifindex) < 0)
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goto buffer_too_small;
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if (nla_put(nl_msg, IFLA_ADDRESS, VIR_MAC_BUFLEN, macaddress) < 0)
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goto buffer_too_small;
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if (ifname &&
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nla_put(nl_msg, IFLA_IFNAME, strlen(ifname)+1, ifname) < 0)
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goto buffer_too_small;
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if (!(linkinfo = nla_nest_start(nl_msg, IFLA_LINKINFO)))
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goto buffer_too_small;
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if (nla_put(nl_msg, IFLA_INFO_KIND, strlen(type), type) < 0)
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goto buffer_too_small;
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if (macvlan_mode > 0) {
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if (!(info_data = nla_nest_start(nl_msg, IFLA_INFO_DATA)))
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goto buffer_too_small;
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if (nla_put(nl_msg, IFLA_MACVLAN_MODE, sizeof(macvlan_mode),
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&macvlan_mode) < 0)
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goto buffer_too_small;
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nla_nest_end(nl_msg, info_data);
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}
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nla_nest_end(nl_msg, linkinfo);
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if (nlComm(nl_msg, &recvbuf, &recvbuflen, 0) < 0) {
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rc = -1;
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goto cleanup;
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}
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if (recvbuflen < NLMSG_LENGTH(0) || recvbuf == NULL)
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goto malformed_resp;
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resp = (struct nlmsghdr *)recvbuf;
|
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switch (resp->nlmsg_type) {
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case NLMSG_ERROR:
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err = (struct nlmsgerr *)NLMSG_DATA(resp);
|
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if (resp->nlmsg_len < NLMSG_LENGTH(sizeof(*err)))
|
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goto malformed_resp;
|
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|
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switch (err->error) {
|
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|
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case 0:
|
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break;
|
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|
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case -EEXIST:
|
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*retry = 1;
|
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rc = -1;
|
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break;
|
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|
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default:
|
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virReportSystemError(-err->error,
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_("error creating %s type of interface"),
|
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type);
|
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rc = -1;
|
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}
|
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break;
|
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|
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case NLMSG_DONE:
|
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break;
|
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|
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default:
|
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goto malformed_resp;
|
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}
|
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|
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cleanup:
|
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nlmsg_free(nl_msg);
|
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|
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VIR_FREE(recvbuf);
|
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|
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return rc;
|
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|
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malformed_resp:
|
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nlmsg_free(nl_msg);
|
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|
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virNetDevError(VIR_ERR_INTERNAL_ERROR, "%s",
|
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_("malformed netlink response message"));
|
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VIR_FREE(recvbuf);
|
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return -1;
|
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|
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buffer_too_small:
|
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nlmsg_free(nl_msg);
|
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|
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virNetDevError(VIR_ERR_INTERNAL_ERROR, "%s",
|
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_("allocated netlink buffer is too small"));
|
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return -1;
|
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}
|
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|
||||
/**
|
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* virNetDevMacVLanDelete:
|
||||
*
|
||||
* @ifname: Name of the interface
|
||||
*
|
||||
* Tear down an interface with the given name.
|
||||
*
|
||||
* Returns 0 on success, -1 on fatal error.
|
||||
*/
|
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int virNetDevMacVLanDelete(const char *ifname)
|
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{
|
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int rc = 0;
|
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struct nlmsghdr *resp;
|
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struct nlmsgerr *err;
|
||||
struct ifinfomsg ifinfo = { .ifi_family = AF_UNSPEC };
|
||||
unsigned char *recvbuf = NULL;
|
||||
unsigned int recvbuflen;
|
||||
struct nl_msg *nl_msg;
|
||||
|
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nl_msg = nlmsg_alloc_simple(RTM_DELLINK,
|
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NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
|
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if (!nl_msg) {
|
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virReportOOMError();
|
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return -1;
|
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}
|
||||
|
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if (nlmsg_append(nl_msg, &ifinfo, sizeof(ifinfo), NLMSG_ALIGNTO) < 0)
|
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goto buffer_too_small;
|
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|
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if (nla_put(nl_msg, IFLA_IFNAME, strlen(ifname)+1, ifname) < 0)
|
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goto buffer_too_small;
|
||||
|
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if (nlComm(nl_msg, &recvbuf, &recvbuflen, 0) < 0) {
|
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rc = -1;
|
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goto cleanup;
|
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}
|
||||
|
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if (recvbuflen < NLMSG_LENGTH(0) || recvbuf == NULL)
|
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goto malformed_resp;
|
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|
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resp = (struct nlmsghdr *)recvbuf;
|
||||
|
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switch (resp->nlmsg_type) {
|
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case NLMSG_ERROR:
|
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err = (struct nlmsgerr *)NLMSG_DATA(resp);
|
||||
if (resp->nlmsg_len < NLMSG_LENGTH(sizeof(*err)))
|
||||
goto malformed_resp;
|
||||
|
||||
if (err->error) {
|
||||
virReportSystemError(-err->error,
|
||||
_("error destroying %s interface"),
|
||||
ifname);
|
||||
rc = -1;
|
||||
}
|
||||
break;
|
||||
|
||||
case NLMSG_DONE:
|
||||
break;
|
||||
|
||||
default:
|
||||
goto malformed_resp;
|
||||
}
|
||||
|
||||
cleanup:
|
||||
nlmsg_free(nl_msg);
|
||||
|
||||
VIR_FREE(recvbuf);
|
||||
|
||||
return rc;
|
||||
|
||||
malformed_resp:
|
||||
nlmsg_free(nl_msg);
|
||||
|
||||
virNetDevError(VIR_ERR_INTERNAL_ERROR, "%s",
|
||||
_("malformed netlink response message"));
|
||||
VIR_FREE(recvbuf);
|
||||
return -1;
|
||||
|
||||
buffer_too_small:
|
||||
nlmsg_free(nl_msg);
|
||||
|
||||
virNetDevError(VIR_ERR_INTERNAL_ERROR, "%s",
|
||||
_("allocated netlink buffer is too small"));
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* virNetDevMacVLanTapOpen:
|
||||
* Open the macvtap's tap device.
|
||||
@ -332,9 +561,9 @@ create_name:
|
||||
goto disassociate_exit;
|
||||
|
||||
if (virNetDevBandwidthSet(cr_ifname, bandwidth) < 0) {
|
||||
macvtapError(VIR_ERR_INTERNAL_ERROR,
|
||||
_("cannot set bandwidth limits on %s"),
|
||||
cr_ifname);
|
||||
virNetDevError(VIR_ERR_INTERNAL_ERROR,
|
||||
_("cannot set bandwidth limits on %s"),
|
||||
cr_ifname);
|
||||
rc = -1;
|
||||
goto disassociate_exit;
|
||||
}
|
||||
@ -392,6 +621,25 @@ int virNetDevMacVLanDeleteWithVPortProfile(const char *ifname,
|
||||
}
|
||||
|
||||
#else /* ! WITH_MACVTAP */
|
||||
int virNetDevMacVLanCreate(const char *ifname ATTRIBUTE_UNUSED,
|
||||
const char *type ATTRIBUTE_UNUSED,
|
||||
const unsigned char *macaddress ATTRIBUTE_UNUSED,
|
||||
const char *srcdev ATTRIBUTE_UNUSED,
|
||||
uint32_t macvlan_mode ATTRIBUTE_UNUSED,
|
||||
int *retry ATTRIBUTE_UNUSED)
|
||||
{
|
||||
virReportSystemError(ENOSYS, "%s",
|
||||
_("Cannot create macvlan devices on this platform"));
|
||||
return -1;
|
||||
}
|
||||
|
||||
int virNetDevMacVLanDelete(const char *ifname ATTRIBUTE_UNUSED)
|
||||
{
|
||||
virReportSystemError(ENOSYS, "%s",
|
||||
_("Cannot create macvlan devices on this platform"));
|
||||
return -1;
|
||||
}
|
||||
|
||||
int virNetDevMacVLanCreateWithVPortProfile(const char *ifname ATTRIBUTE_UNUSED,
|
||||
const unsigned char *macaddress ATTRIBUTE_UNUSED,
|
||||
const char *linkdev ATTRIBUTE_UNUSED,
|
||||
|
||||
@ -39,6 +39,18 @@ enum virNetDevMacVLanMode {
|
||||
};
|
||||
VIR_ENUM_DECL(virNetDevMacVLanMode)
|
||||
|
||||
int virNetDevMacVLanCreate(const char *ifname,
|
||||
const char *type,
|
||||
const unsigned char *macaddress,
|
||||
const char *srcdev,
|
||||
uint32_t macvlan_mode,
|
||||
int *retry)
|
||||
ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(4)
|
||||
ATTRIBUTE_RETURN_CHECK;
|
||||
|
||||
int virNetDevMacVLanDelete(const char *ifname)
|
||||
ATTRIBUTE_NONNULL(1) ATTRIBUTE_RETURN_CHECK;
|
||||
|
||||
int virNetDevMacVLanCreateWithVPortProfile(const char *ifname,
|
||||
const unsigned char *macaddress,
|
||||
const char *linkdev,
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user