mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-07-17 07:07:16 +00:00
nwfilter: convert IP address learning code to virNWFilterBindingDefPtr
Use the virNWFilterBindingDefPTr struct in the IP address learning code directly. Reviewed-by: John Ferlan <jferlan@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
parent
d1a7c08eb1
commit
5b6c02e292
@ -626,12 +626,9 @@ virNWFilterDoInstantiate(virNWFilterTechDriverPtr techdriver,
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} else if (STRCASEEQ(learning, "any")) {
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} else if (STRCASEEQ(learning, "any")) {
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if (!virNWFilterHasLearnReq(ifindex)) {
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if (!virNWFilterHasLearnReq(ifindex)) {
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rc = virNWFilterLearnIPAddress(techdriver,
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rc = virNWFilterLearnIPAddress(techdriver,
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binding->portdevname,
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binding,
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ifindex,
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ifindex,
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binding->linkdevname,
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driver,
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&binding->mac,
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filter->name,
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binding->filterparams, driver,
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DETECT_DHCP|DETECT_STATIC);
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DETECT_DHCP|DETECT_STATIC);
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}
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}
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goto err_exit;
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goto err_exit;
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@ -138,12 +138,8 @@ typedef struct _virNWFilterIPAddrLearnReq virNWFilterIPAddrLearnReq;
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typedef virNWFilterIPAddrLearnReq *virNWFilterIPAddrLearnReqPtr;
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typedef virNWFilterIPAddrLearnReq *virNWFilterIPAddrLearnReqPtr;
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struct _virNWFilterIPAddrLearnReq {
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struct _virNWFilterIPAddrLearnReq {
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virNWFilterTechDriverPtr techdriver;
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virNWFilterTechDriverPtr techdriver;
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char ifname[IF_NAMESIZE];
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int ifindex;
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int ifindex;
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char linkdev[IF_NAMESIZE];
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virNWFilterBindingDefPtr binding;
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virMacAddr macaddr;
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char *filtername;
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virHashTablePtr filterparams;
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virNWFilterDriverStatePtr driver;
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virNWFilterDriverStatePtr driver;
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int howDetect; /* bitmask of enum howDetect */
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int howDetect; /* bitmask of enum howDetect */
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@ -233,8 +229,7 @@ virNWFilterIPAddrLearnReqFree(virNWFilterIPAddrLearnReqPtr req)
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if (!req)
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if (!req)
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return;
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return;
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VIR_FREE(req->filtername);
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virNWFilterBindingDefFree(req->binding);
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virHashFree(req->filterparams);
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VIR_FREE(req);
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VIR_FREE(req);
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}
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}
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@ -405,8 +400,9 @@ learnIPAddressThread(void *arg)
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virNWFilterIPAddrLearnReqPtr req = arg;
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virNWFilterIPAddrLearnReqPtr req = arg;
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uint32_t vmaddr = 0, bcastaddr = 0;
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uint32_t vmaddr = 0, bcastaddr = 0;
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unsigned int ethHdrSize;
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unsigned int ethHdrSize;
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char *listen_if = (strlen(req->linkdev) != 0) ? req->linkdev
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char *listen_if = (req->binding->linkdevname ?
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: req->ifname;
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req->binding->linkdevname :
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req->binding->portdevname);
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int dhcp_opts_len;
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int dhcp_opts_len;
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char macaddr[VIR_MAC_STRING_BUFLEN];
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char macaddr[VIR_MAC_STRING_BUFLEN];
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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@ -417,13 +413,13 @@ learnIPAddressThread(void *arg)
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virNWFilterTechDriverPtr techdriver = req->techdriver;
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virNWFilterTechDriverPtr techdriver = req->techdriver;
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struct pollfd fds[1];
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struct pollfd fds[1];
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if (virNWFilterLockIface(req->ifname) < 0)
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if (virNWFilterLockIface(req->binding->portdevname) < 0)
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goto err_no_lock;
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goto err_no_lock;
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req->status = 0;
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req->status = 0;
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/* anything change to the VM's interface -- check at least once */
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/* anything change to the VM's interface -- check at least once */
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if (virNetDevValidateConfig(req->ifname, NULL, req->ifindex) <= 0) {
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if (virNetDevValidateConfig(req->binding->portdevname, NULL, req->ifindex) <= 0) {
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virResetLastError();
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virResetLastError();
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req->status = ENODEV;
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req->status = ENODEV;
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goto done;
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goto done;
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@ -440,11 +436,11 @@ learnIPAddressThread(void *arg)
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fds[0].fd = pcap_fileno(handle);
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fds[0].fd = pcap_fileno(handle);
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fds[0].events = POLLIN | POLLERR;
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fds[0].events = POLLIN | POLLERR;
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virMacAddrFormat(&req->macaddr, macaddr);
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virMacAddrFormat(&req->binding->mac, macaddr);
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if (req->howDetect == DETECT_DHCP) {
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if (req->howDetect == DETECT_DHCP) {
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if (techdriver->applyDHCPOnlyRules(req->ifname,
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if (techdriver->applyDHCPOnlyRules(req->binding->portdevname,
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&req->macaddr,
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&req->binding->mac,
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NULL, false) < 0) {
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NULL, false) < 0) {
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VIR_DEBUG("Unable to apply DHCP only rules");
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VIR_DEBUG("Unable to apply DHCP only rules");
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req->status = EINVAL;
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req->status = EINVAL;
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@ -452,8 +448,8 @@ learnIPAddressThread(void *arg)
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}
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}
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virBufferAddLit(&buf, "src port 67 and dst port 68");
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virBufferAddLit(&buf, "src port 67 and dst port 68");
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} else {
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} else {
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if (techdriver->applyBasicRules(req->ifname,
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if (techdriver->applyBasicRules(req->binding->portdevname,
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&req->macaddr) < 0) {
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&req->binding->mac) < 0) {
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VIR_DEBUG("Unable to apply basic rules");
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VIR_DEBUG("Unable to apply basic rules");
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req->status = EINVAL;
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req->status = EINVAL;
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goto done;
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goto done;
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@ -524,7 +520,7 @@ learnIPAddressThread(void *arg)
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}
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}
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/* Again, already handled above, but lets be sure */
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/* Again, already handled above, but lets be sure */
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if (virNetDevValidateConfig(req->ifname, NULL, req->ifindex) <= 0) {
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if (virNetDevValidateConfig(req->binding->portdevname, NULL, req->ifindex) <= 0) {
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virResetLastError();
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virResetLastError();
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req->status = ENODEV;
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req->status = ENODEV;
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showError = false;
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showError = false;
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@ -556,7 +552,7 @@ learnIPAddressThread(void *arg)
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continue;
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continue;
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}
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}
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if (virMacAddrCmpRaw(&req->macaddr, ether_hdr->ether_shost) == 0) {
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if (virMacAddrCmpRaw(&req->binding->mac, ether_hdr->ether_shost) == 0) {
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/* packets from the VM */
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/* packets from the VM */
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if (etherType == ETHERTYPE_IP &&
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if (etherType == ETHERTYPE_IP &&
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@ -595,7 +591,7 @@ learnIPAddressThread(void *arg)
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break;
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break;
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}
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}
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}
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}
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} else if (virMacAddrCmpRaw(&req->macaddr,
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} else if (virMacAddrCmpRaw(&req->binding->mac,
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ether_hdr->ether_dhost) == 0 ||
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ether_hdr->ether_dhost) == 0 ||
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/* allow Broadcast replies from DHCP server */
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/* allow Broadcast replies from DHCP server */
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virMacAddrIsBroadcastRaw(ether_hdr->ether_dhost)) {
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virMacAddrIsBroadcastRaw(ether_hdr->ether_dhost)) {
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@ -625,7 +621,7 @@ learnIPAddressThread(void *arg)
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((char *)udphdr + sizeof(udphdr));
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((char *)udphdr + sizeof(udphdr));
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if (dhcp->op == 2 /* BOOTREPLY */ &&
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if (dhcp->op == 2 /* BOOTREPLY */ &&
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virMacAddrCmpRaw(
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virMacAddrCmpRaw(
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&req->macaddr,
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&req->binding->mac,
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&dhcp->chaddr[0]) == 0) {
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&dhcp->chaddr[0]) == 0) {
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dhcp_opts_len = header.len -
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dhcp_opts_len = header.len -
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(ethHdrSize + iphdr->ihl * 4 +
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(ethHdrSize + iphdr->ihl * 4 +
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@ -669,28 +665,19 @@ learnIPAddressThread(void *arg)
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* Also it is safe to unlock interface here because we stopped
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* Also it is safe to unlock interface here because we stopped
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* capturing and applied necessary rules on the interface, while
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* capturing and applied necessary rules on the interface, while
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* instantiating a new filter doesn't require a locked interface.*/
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* instantiating a new filter doesn't require a locked interface.*/
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virNWFilterUnlockIface(req->ifname);
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virNWFilterUnlockIface(req->binding->portdevname);
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if ((inetaddr = virSocketAddrFormat(&sa)) != NULL) {
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if ((inetaddr = virSocketAddrFormat(&sa)) != NULL) {
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virNWFilterBindingDef binding = {
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if (virNWFilterIPAddrMapAddIPAddr(req->binding->portdevname, inetaddr) < 0) {
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.portdevname = req->ifname,
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.linkdevname = req->linkdev,
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.mac = req->macaddr,
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.filter = req->filtername,
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.filterparams = req->filterparams,
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.ownername = NULL,
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.owneruuid = {0},
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};
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if (virNWFilterIPAddrMapAddIPAddr(req->ifname, inetaddr) < 0) {
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VIR_ERROR(_("Failed to add IP address %s to IP address "
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VIR_ERROR(_("Failed to add IP address %s to IP address "
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"cache for interface %s"), inetaddr, req->ifname);
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"cache for interface %s"), inetaddr, req->binding->portdevname);
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}
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}
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ret = virNWFilterInstantiateFilterLate(req->driver,
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ret = virNWFilterInstantiateFilterLate(req->driver,
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&binding,
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req->binding,
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req->ifindex);
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req->ifindex);
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VIR_DEBUG("Result from applying firewall rules on "
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VIR_DEBUG("Result from applying firewall rules on "
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"%s with IP addr %s : %d", req->ifname, inetaddr, ret);
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"%s with IP addr %s : %d", req->binding->portdevname, inetaddr, ret);
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VIR_FREE(inetaddr);
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VIR_FREE(inetaddr);
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}
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}
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} else {
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} else {
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@ -698,13 +685,13 @@ learnIPAddressThread(void *arg)
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virReportSystemError(req->status,
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virReportSystemError(req->status,
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_("encountered an error on interface %s "
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_("encountered an error on interface %s "
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"index %d"),
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"index %d"),
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req->ifname, req->ifindex);
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req->binding->portdevname, req->ifindex);
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techdriver->applyDropAllRules(req->ifname);
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techdriver->applyDropAllRules(req->binding->portdevname);
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virNWFilterUnlockIface(req->ifname);
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virNWFilterUnlockIface(req->binding->portdevname);
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}
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}
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VIR_DEBUG("pcap thread terminating for interface %s", req->ifname);
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VIR_DEBUG("pcap thread terminating for interface %s", req->binding->portdevname);
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err_no_lock:
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err_no_lock:
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@ -717,13 +704,8 @@ learnIPAddressThread(void *arg)
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/**
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/**
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* virNWFilterLearnIPAddress
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* virNWFilterLearnIPAddress
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* @techdriver : driver to build firewalls
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* @techdriver : driver to build firewalls
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* @ifname: the name of the interface
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* @binding: the network port binding information
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* @ifindex: the index of the interface
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* @ifindex: the index of the interface
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* @linkdev : the name of the link device; currently only used in case of a
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* macvtap device
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* @macaddr : the MAC address of the interface
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* @filtername : the name of the top-level filter to apply to the interface
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* once its IP address has been detected
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* @driver : the network filter driver
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* @driver : the network filter driver
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* @howDetect : the method on how the thread is supposed to detect the
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* @howDetect : the method on how the thread is supposed to detect the
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* IP address; bitmask of "enum howDetect" flags.
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* IP address; bitmask of "enum howDetect" flags.
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@ -737,19 +719,14 @@ learnIPAddressThread(void *arg)
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*/
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*/
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int
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int
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virNWFilterLearnIPAddress(virNWFilterTechDriverPtr techdriver,
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virNWFilterLearnIPAddress(virNWFilterTechDriverPtr techdriver,
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const char *ifname,
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virNWFilterBindingDefPtr binding,
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int ifindex,
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int ifindex,
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const char *linkdev,
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const virMacAddr *macaddr,
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const char *filtername,
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virHashTablePtr filterparams,
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virNWFilterDriverStatePtr driver,
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virNWFilterDriverStatePtr driver,
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int howDetect)
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int howDetect)
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{
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{
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int rc;
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int rc;
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virThread thread;
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virThread thread;
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virNWFilterIPAddrLearnReqPtr req = NULL;
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virNWFilterIPAddrLearnReqPtr req = NULL;
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virHashTablePtr ht = NULL;
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if (howDetect == 0)
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if (howDetect == 0)
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return -1;
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return -1;
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@ -765,37 +742,11 @@ virNWFilterLearnIPAddress(virNWFilterTechDriverPtr techdriver,
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if (VIR_ALLOC(req) < 0)
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if (VIR_ALLOC(req) < 0)
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goto err_no_req;
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goto err_no_req;
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ht = virNWFilterHashTableCreate(0);
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if (!(req->binding = virNWFilterBindingDefCopy(binding)))
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if (ht == NULL)
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goto err_free_req;
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goto err_free_req;
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if (virNWFilterHashTablePutAll(filterparams, ht) < 0)
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goto err_free_ht;
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if (VIR_STRDUP(req->filtername, filtername) < 0)
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goto err_free_ht;
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if (virStrcpyStatic(req->ifname, ifname) == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Destination buffer for ifname ('%s') "
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"not large enough"), ifname);
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goto err_free_ht;
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}
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if (linkdev) {
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if (virStrcpyStatic(req->linkdev, linkdev) == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Destination buffer for linkdev ('%s') "
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"not large enough"), linkdev);
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goto err_free_ht;
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}
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}
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req->ifindex = ifindex;
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req->ifindex = ifindex;
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virMacAddrSet(&req->macaddr, macaddr);
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req->driver = driver;
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req->driver = driver;
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req->filterparams = ht;
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ht = NULL;
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req->howDetect = howDetect;
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req->howDetect = howDetect;
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req->techdriver = techdriver;
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req->techdriver = techdriver;
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@ -814,8 +765,6 @@ virNWFilterLearnIPAddress(virNWFilterTechDriverPtr techdriver,
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err_dereg_req:
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err_dereg_req:
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virNWFilterDeregisterLearnReq(ifindex);
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virNWFilterDeregisterLearnReq(ifindex);
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err_free_ht:
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virHashFree(ht);
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err_free_req:
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err_free_req:
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virNWFilterIPAddrLearnReqFree(req);
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virNWFilterIPAddrLearnReqFree(req);
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err_no_req:
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err_no_req:
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@ -826,12 +775,8 @@ virNWFilterLearnIPAddress(virNWFilterTechDriverPtr techdriver,
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int
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int
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virNWFilterLearnIPAddress(virNWFilterTechDriverPtr techdriver ATTRIBUTE_UNUSED,
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virNWFilterLearnIPAddress(virNWFilterTechDriverPtr techdriver ATTRIBUTE_UNUSED,
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const char *ifname ATTRIBUTE_UNUSED,
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virNWFilterBindingDefPtr binding ATTRIBUTE_UNUSED,
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int ifindex ATTRIBUTE_UNUSED,
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int ifindex ATTRIBUTE_UNUSED,
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const char *linkdev ATTRIBUTE_UNUSED,
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const virMacAddr *macaddr ATTRIBUTE_UNUSED,
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const char *filtername ATTRIBUTE_UNUSED,
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virHashTablePtr filterparams ATTRIBUTE_UNUSED,
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virNWFilterDriverStatePtr driver ATTRIBUTE_UNUSED,
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virNWFilterDriverStatePtr driver ATTRIBUTE_UNUSED,
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int howDetect ATTRIBUTE_UNUSED)
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int howDetect ATTRIBUTE_UNUSED)
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{
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{
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@ -28,6 +28,7 @@
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# include "conf/nwfilter_params.h"
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# include "conf/nwfilter_params.h"
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# include "nwfilter_tech_driver.h"
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# include "nwfilter_tech_driver.h"
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# include "virnwfilterbindingdef.h"
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# include <net/if.h>
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# include <net/if.h>
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enum howDetect {
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enum howDetect {
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@ -36,12 +37,8 @@ enum howDetect {
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};
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};
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int virNWFilterLearnIPAddress(virNWFilterTechDriverPtr techdriver,
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int virNWFilterLearnIPAddress(virNWFilterTechDriverPtr techdriver,
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const char *ifname,
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virNWFilterBindingDefPtr binding,
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int ifindex,
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int ifindex,
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const char *linkdev,
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const virMacAddr *macaddr,
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const char *filtername,
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virHashTablePtr filterparams,
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virNWFilterDriverStatePtr driver,
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virNWFilterDriverStatePtr driver,
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int howDetect);
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int howDetect);
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