Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
Browse files

Cleanroom libnl_2 library

By overriding the netlink cache pointer, able to pass nl80211 family id.
Scan and connecting open access point work
Added legal stuff to headers

Change-Id: I1c60452f35fdd1f80edebc03fef33067722d0543
  • Loading branch information...
commit ed6b39cc7746fabdd0d01c96afcf60b9544913d3 1 parent 9d94942
Frank Maker authored
Showing with 6,117 additions and 0 deletions.
  1. +2 −0  libnl_2/.gitignore
  2. +29 −0 libnl_2/Android.mk
  3. +35 −0 libnl_2/README
  4. +226 −0 libnl_2/attr.c
  5. +37 −0 libnl_2/cache.c
  6. +44 −0 libnl_2/genl/family.c
  7. +283 −0 libnl_2/genl/genl.c
  8. +92 −0 libnl_2/handlers.c
  9. +20 −0 libnl_2/include/netlink-generic.h
  10. +186 −0 libnl_2/include/netlink-local.h
  11. +832 −0 libnl_2/include/netlink-types.h
  12. +69 −0 libnl_2/include/netlink/addr.h
  13. +283 −0 libnl_2/include/netlink/attr.h
  14. +199 −0 libnl_2/include/netlink/cache-api.h
  15. +129 −0 libnl_2/include/netlink/cache.h
  16. +80 −0 libnl_2/include/netlink/cli/utils.h
  17. +41 −0 libnl_2/include/netlink/data.h
  18. +60 −0 libnl_2/include/netlink/errno.h
  19. +42 −0 libnl_2/include/netlink/fib_lookup/lookup.h
  20. +51 −0 libnl_2/include/netlink/fib_lookup/request.h
  21. +37 −0 libnl_2/include/netlink/genl/ctrl.h
  22. +50 −0 libnl_2/include/netlink/genl/family.h
  23. +47 −0 libnl_2/include/netlink/genl/genl.h
  24. +87 −0 libnl_2/include/netlink/genl/mngt.h
  25. +144 −0 libnl_2/include/netlink/handlers.h
  26. +93 −0 libnl_2/include/netlink/list.h
  27. +145 −0 libnl_2/include/netlink/msg.h
  28. +126 −0 libnl_2/include/netlink/netfilter/ct.h
  29. +50 −0 libnl_2/include/netlink/netlink-compat.h
  30. +196 −0 libnl_2/include/netlink/netlink-kernel.h
  31. +81 −0 libnl_2/include/netlink/netlink.h
  32. +342 −0 libnl_2/include/netlink/object-api.h
  33. +69 −0 libnl_2/include/netlink/object.h
  34. +91 −0 libnl_2/include/netlink/route/addr.h
  35. +73 −0 libnl_2/include/netlink/route/class.h
  36. +62 −0 libnl_2/include/netlink/route/classifier.h
  37. +73 −0 libnl_2/include/netlink/route/cls/ematch.h
  38. +145 −0 libnl_2/include/netlink/route/link.h
  39. +79 −0 libnl_2/include/netlink/route/neighbour.h
  40. +65 −0 libnl_2/include/netlink/route/neightbl.h
  41. +65 −0 libnl_2/include/netlink/route/nexthop.h
  42. +73 −0 libnl_2/include/netlink/route/qdisc.h
  43. +124 −0 libnl_2/include/netlink/route/route.h
  44. +69 −0 libnl_2/include/netlink/route/rtnl.h
  45. +78 −0 libnl_2/include/netlink/route/rule.h
  46. +63 −0 libnl_2/include/netlink/route/tc.h
  47. +66 −0 libnl_2/include/netlink/socket.h
  48. +111 −0 libnl_2/include/netlink/types.h
  49. +78 −0 libnl_2/include/netlink/utils.h
  50. +18 −0 libnl_2/include/netlink/version.h
  51. +153 −0 libnl_2/msg.c
  52. +273 −0 libnl_2/netlink.c
  53. +33 −0 libnl_2/object.c
  54. +118 −0 libnl_2/socket.c
View
2  libnl_2/.gitignore
@@ -0,0 +1,2 @@
+include/netlink/version.h.in
+cscope.*
View
29 libnl_2/Android.mk
@@ -0,0 +1,29 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+ attr.c \
+ cache.c \
+ genl/genl.c \
+ genl/family.c \
+ handlers.c \
+ msg.c \
+ netlink.c \
+ object.c \
+ socket.c
+
+LOCAL_C_INCLUDES += \
+ $(LOCAL_PATH)/include
+
+# Static Library
+LOCAL_MODULE := libnl_2
+LOCAL_MODULE_TAGS := optional
+include $(BUILD_STATIC_LIBRARY)
+
+#######################################
+# Shared library currently unavailiable
+# * Netlink cache not implemented
+# * Library is not thread safe
+#######################################
+
View
35 libnl_2/README
@@ -0,0 +1,35 @@
+Netlink Protocol Format (RFC3549)
++-----------------+-+-------------------+-+
+|Netlink Message |P| Generic Netlink |P|
+| Header |A| Message Header |A|
+|(struct nlmsghdr)|D|(struct genlmsghdr)|D|
++-----------------+-+-------------------+-+
++-----------------+-+-----------------+-+-----------------+-+-----------------+-+---+
+|Netlink Attribute|P|Netlink Attribute|P|Netlink Attribute|P|Netlink Attribute|P|...|
+| #0 Header |A| #0 Payload |A| #1 Header |A| #1 Payload |A| |
+| (struct nlattr) |D| (void) |D| (struct nlattr) |D| (void) |D| |
++-----------------+-+-----------------+-+-----------------+-+-----------------+-+---+
+
+* Each netlink message consists of a bitstream with a netlink header.
+* After this header a second header *can* be used specific to the netlink
+ family in use. This library was tested using the generic netlink
+ protocol defined by struct genlmsghdr to support nl80211.
+* After the header(s) netlink attributes can be appended to the message
+ which hold can hold basic types such as unsigned integers and strings.
+* All data structures in this implementation are byte-aligned (Currently 4 bytes).
+* Acknowledgements (ACKs) are sent as NLMSG_ERROR netlink message types (0x2) and
+ have an error value of 0.
+
+KNOWN BUGS
+* NOT THREAD SAFE!!!
+* nla_parse - does not use nla_policy argument
+* nl_recvmsgs - does not support nl_cb_overwrite_recv()
+* nl_recv - sets/unsets async. flag
+* genl_ctrl_alloc_cache - netlink send/recv funcs should be used
+
+REFERENCES
+* nl80211.h
+* netlink_types.h
+* $LINUX_KERNEL/net/wireless/nl80211.c
+* http://www.infradead.org/~tgr/libnl/doc-3.0/index.html
+* http://www.netfilter.org/projects/libmnl/doxygen/index.html
View
226 libnl_2/attr.c
@@ -0,0 +1,226 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* NOTICE: This is a clean room re-implementation of libnl */
+
+#include <errno.h>
+#include "netlink/netlink.h"
+#include "netlink/msg.h"
+#include "netlink/attr.h"
+#include "netlink-types.h"
+
+/* Return payload of string attribute. */
+char *nla_get_string(struct nlattr *nla)
+{
+ return (char *) nla_data(nla);
+}
+
+/* Return payload of 16 bit integer attribute. */
+uint16_t nla_get_u16(struct nlattr *nla)
+{
+ return *((uint16_t *) nla_data(nla));
+}
+
+/* Return payload of 32 bit integer attribute. */
+uint32_t nla_get_u32(struct nlattr *nla)
+{
+ return *((uint32_t *) nla_data(nla));
+}
+
+/* Return value of 8 bit integer attribute. */
+uint8_t nla_get_u8(struct nlattr *nla)
+{
+ return *((uint8_t *) nla_data(nla));
+}
+
+/* Return payload of uint64_t attribute. */
+uint64_t nla_get_u64(struct nlattr *nla)
+{
+ uint64_t tmp;
+ nla_memcpy(&tmp, nla, sizeof(tmp));
+ return tmp;
+}
+
+/* Head of payload */
+void *nla_data(const struct nlattr *nla)
+{
+ return (void *) ((char *) nla + NLA_HDRLEN);
+}
+
+/* Return length of the payload . */
+int nla_len(const struct nlattr *nla)
+{
+ return nla->nla_len - NLA_HDRLEN;
+}
+
+/* Start a new level of nested attributes. */
+struct nlattr *nla_nest_start(struct nl_msg *msg, int attrtype)
+{
+ if (!nla_put(msg, attrtype, 0, NULL)) {
+ /* Get ref to last (nested start) attr */
+ int padding;
+ struct nlattr *nla;
+
+ padding = nlmsg_padlen(nlmsg_datalen(nlmsg_hdr(msg)));
+ nla = (struct nlattr *) \
+ ((char *) nlmsg_tail(msg->nm_nlh) - padding);
+ return nla;
+
+ } else
+ return NULL;
+
+}
+
+/* Finalize nesting of attributes. */
+int nla_nest_end(struct nl_msg *msg, struct nlattr *start)
+{
+ start->nla_len = (unsigned char *) \
+ nlmsg_tail(nlmsg_hdr(msg)) - (unsigned char *)start;
+ return 0;
+}
+
+/* Return next attribute in a stream of attributes. */
+struct nlattr *nla_next(const struct nlattr *nla, int *remaining)
+{
+ struct nlattr *next_nla = NULL;
+ if (nla->nla_len >= sizeof(struct nlattr) &&
+ nla->nla_len <= *remaining){
+ next_nla = (struct nlattr *) \
+ ((char *) nla + NLA_ALIGN(nla->nla_len));
+ *remaining = *remaining - NLA_ALIGN(nla->nla_len);
+ }
+
+ return next_nla;
+
+}
+
+/* Check if the attribute header and payload can be accessed safely. */
+int nla_ok(const struct nlattr *nla, int remaining)
+{
+ return remaining > 0 &&
+ nla->nla_len >= sizeof(struct nlattr) &&
+ sizeof(struct nlattr) <= (unsigned int) remaining &&
+ nla->nla_len <= remaining;
+}
+
+/* Create attribute index based on a stream of attributes. */
+/* NOTE: Policy not used ! */
+int nla_parse(struct nlattr *tb[], int maxtype, struct nlattr *head,
+ int len, struct nla_policy *policy)
+{
+ struct nlattr *pos;
+ int rem;
+
+ /* First clear table */
+ memset(tb, 0, (maxtype+1) * sizeof(struct nlattr *));
+
+ nla_for_each_attr(pos, head, len, rem) {
+ const int type = nla_type(pos);
+
+ if (type <= maxtype)
+ tb[type] = pos;
+
+ }
+
+ return 0;
+}
+
+
+/* Create attribute index based on nested attribute. */
+int nla_parse_nested(struct nlattr *tb[], int maxtype,
+ struct nlattr *nla, struct nla_policy *policy)
+{
+ return nla_parse(tb, maxtype, nla_data(nla), nla_len(nla), policy);
+}
+
+
+/* Add a unspecific attribute to netlink message. */
+int nla_put(struct nl_msg *msg, int attrtype, int datalen, const void *data)
+{
+ struct nlattr *nla;
+
+ /* Reserve space and init nla header */
+ nla = nla_reserve(msg, attrtype, datalen);
+ if (nla)
+ memcpy(nla_data(nla), data, datalen);
+
+ return -errno;
+
+}
+
+
+/* Add nested attributes to netlink message. */
+/* Takes the attributes found in the nested message and appends them
+ * to the message msg nested in a container of the type attrtype. The
+ * nested message may not have a family specific header */
+int nla_put_nested(struct nl_msg *msg, int attrtype, struct nl_msg *nested)
+{
+ int rc = -1;
+ const int NO_HEADER = 0;
+
+ rc = nla_put(
+ msg,
+ attrtype,
+ nlmsg_attrlen(nlmsg_hdr(nested), NO_HEADER),
+ (const void *) nlmsg_attrdata(nlmsg_hdr(nested), NO_HEADER)
+ );
+ return rc;
+
+}
+
+/* Return type of the attribute. */
+int nla_type(const struct nlattr *nla)
+{
+ return (int) nla->nla_type;
+}
+
+/* Reserves room for an attribute in specified netlink message and fills
+ * in the attribute header (type,length). Return NULL if insufficient space */
+struct nlattr *nla_reserve(struct nl_msg * msg, int attrtype, int data_len)
+{
+
+ struct nlattr *nla;
+ const unsigned int NEW_SIZE = \
+ msg->nm_nlh->nlmsg_len + NLA_ALIGN(NLA_HDRLEN + data_len);
+
+ /* Check enough space for attribute */
+ if (NEW_SIZE <= msg->nm_size) {
+ const int fam_hdrlen = msg->nm_nlh->nlmsg_len - NLMSG_HDRLEN;
+ msg->nm_nlh->nlmsg_len = NEW_SIZE;
+ nla = nlmsg_attrdata(msg->nm_nlh, fam_hdrlen);
+ nla->nla_type = attrtype;
+ nla->nla_len = NLA_HDRLEN + data_len;
+ } else
+ goto fail;
+
+ return nla;
+fail:
+ return NULL;
+
+}
+
+/* Copy attribute payload to another memory area. */
+int nla_memcpy(void *dest, struct nlattr *src, int count)
+{
+ int rc;
+ void *ret_dest = memcpy(dest, nla_data(src), count);
+ if (!ret_dest)
+ return count;
+ else
+ return 0;
+}
+
+
View
37 libnl_2/cache.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* NOTICE: This is a clean room re-implementation of libnl */
+
+#include "netlink/cache.h"
+#include "netlink/object.h"
+
+void nl_cache_free(struct nl_cache *cache)
+{
+
+}
+
+void nl_cache_clear(struct nl_cache *cache)
+{
+
+}
+
+void nl_cache_remove(struct nl_object *obj)
+{
+
+}
+
+
View
44 libnl_2/genl/family.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* NOTICE: This is a clean room re-implementation of libnl */
+
+#include "netlink-types.h"
+
+static struct genl_family *genl_family_find_byname(const char *name)
+{
+ return NULL;
+}
+
+/* Release reference and none outstanding */
+void genl_family_put(struct genl_family *family)
+{
+ family->ce_refcnt--;
+ if (family->ce_refcnt <= 0)
+ free(family);
+}
+
+unsigned int genl_family_get_id(struct genl_family *family)
+{
+ const int NO_FAMILY_ID = 0;
+
+ if (!family)
+ return NO_FAMILY_ID;
+ else
+ return family->gf_id;
+
+}
+
View
283 libnl_2/genl/genl.c
@@ -0,0 +1,283 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* NOTICE: This is a clean room re-implementation of libnl */
+
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/time.h>
+#include <linux/netlink.h>
+#include "netlink-types.h"
+
+/* Get head of attribute data. */
+struct nlattr *genlmsg_attrdata(const struct genlmsghdr *gnlh, int hdrlen)
+{
+ return (struct nlattr *) \
+ ((char *) gnlh + GENL_HDRLEN + NLMSG_ALIGN(hdrlen));
+
+}
+
+/* Get length of attribute data. */
+int genlmsg_attrlen(const struct genlmsghdr *gnlh, int hdrlen)
+{
+ struct nlattr *nla;
+ struct nlmsghdr *nlh;
+
+ nla = genlmsg_attrdata(gnlh, hdrlen);
+ nlh = (struct nlmsghdr *) ((char *) gnlh - NLMSG_HDRLEN);
+ return (char *) nlmsg_tail(nlh) - (char *) nla;
+}
+
+/* Add generic netlink header to netlink message. */
+void *genlmsg_put(struct nl_msg *msg, uint32_t pid, uint32_t seq, int family,
+ int hdrlen, int flags, uint8_t cmd, uint8_t version)
+{
+ int new_size;
+ struct nlmsghdr *nlh;
+ struct timeval tv;
+ struct genlmsghdr *gmh;
+
+ /* Make sure nl_msg has enough space */
+ new_size = NLMSG_HDRLEN + GENL_HDRLEN + hdrlen;
+ if ((sizeof(struct nl_msg) + new_size) > msg->nm_size)
+ goto fail;
+
+ /* Fill in netlink header */
+ nlh = msg->nm_nlh;
+ nlh->nlmsg_len = new_size;
+ nlh->nlmsg_type = family;
+ nlh->nlmsg_pid = getpid();
+ nlh->nlmsg_flags = flags | NLM_F_REQUEST | NLM_F_ACK;
+
+ /* Get current time for sequence number */
+ if (gettimeofday(&tv, NULL))
+ nlh->nlmsg_seq = 1;
+ else
+ nlh->nlmsg_seq = (int) tv.tv_sec;
+
+ /* Setup genlmsghdr in new message */
+ gmh = (struct genlmsghdr *) ((char *)nlh + NLMSG_HDRLEN);
+ gmh->cmd = (__u8) cmd;
+ gmh->version = version;
+
+ return gmh;
+fail:
+ return NULL;
+
+}
+
+/* Socket has already been alloced to connect it to kernel? */
+int genl_connect(struct nl_sock *sk)
+{
+ return nl_connect(sk, NETLINK_GENERIC);
+
+}
+
+int genl_ctrl_alloc_cache(struct nl_sock *sock, struct nl_cache **result)
+{
+ int rc = -1;
+ int nl80211_genl_id = -1;
+ char sendbuf[sizeof(struct nlmsghdr)+sizeof(struct genlmsghdr)];
+ struct nlmsghdr nlmhdr;
+ struct genlmsghdr gmhhdr;
+ struct iovec sendmsg_iov;
+ struct msghdr msg;
+ int num_char;
+ const int RECV_BUF_SIZE = getpagesize();
+ char *recvbuf;
+ struct iovec recvmsg_iov;
+ int nl80211_flag = 0, nlm_f_multi = 0, nlmsg_done = 0;
+ struct nlmsghdr *nlh;
+
+ /* REQUEST GENERIC NETLINK FAMILY ID */
+ /* Message buffer */
+ nlmhdr.nlmsg_len = sizeof(sendbuf);
+ nlmhdr.nlmsg_type = NETLINK_GENERIC;
+ nlmhdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP;
+ nlmhdr.nlmsg_seq = sock->s_seq_next;
+ nlmhdr.nlmsg_pid = sock->s_local.nl_pid;
+
+ /* Generic netlink header */
+ gmhhdr.cmd = CTRL_CMD_GETFAMILY;
+ gmhhdr.version = CTRL_ATTR_FAMILY_ID;
+
+ /* Combine netlink and generic netlink headers */
+ memcpy(&sendbuf[0], &nlmhdr, sizeof(nlmhdr));
+ memcpy(&sendbuf[0]+sizeof(nlmhdr), &gmhhdr, sizeof(gmhhdr));
+
+ /* Create IO vector with Netlink message */
+ sendmsg_iov.iov_base = &sendbuf;
+ sendmsg_iov.iov_len = sizeof(sendbuf);
+
+ /* Socket message */
+ msg.msg_name = (void *) &sock->s_peer;
+ msg.msg_namelen = sizeof(sock->s_peer);
+ msg.msg_iov = &sendmsg_iov;
+ msg.msg_iovlen = 1; /* Only sending one iov */
+ msg.msg_control = NULL;
+ msg.msg_controllen = 0;
+ msg.msg_flags = 0;
+
+ /* Send message and verify sent */
+ num_char = sendmsg(sock->s_fd, &msg, 0);
+ if (num_char == -1)
+ return -errno;
+
+ /* RECEIVE GENL CMD RESPONSE */
+
+ /* Create receive iov buffer */
+ recvbuf = (char *) malloc(RECV_BUF_SIZE);
+
+ /* Attach to iov */
+ recvmsg_iov.iov_base = recvbuf;
+ recvmsg_iov.iov_len = RECV_BUF_SIZE;
+
+ msg.msg_iov = &recvmsg_iov;
+ msg.msg_iovlen = 1;
+
+ /***************************************************************/
+ /* Receive message. If multipart message, keep receiving until */
+ /* message type is NLMSG_DONE */
+ /***************************************************************/
+
+ do {
+
+ int recvmsg_len, nlmsg_rem;
+
+ /* Receive message */
+ memset(recvbuf, 0, RECV_BUF_SIZE);
+ recvmsg_len = recvmsg(sock->s_fd, &msg, 0);
+
+ /* Make sure receive successful */
+ if (recvmsg_len < 0) {
+ rc = -errno;
+ goto error_recvbuf;
+ }
+
+ /* Parse nlmsghdr */
+ nlmsg_for_each_msg(nlh, (struct nlmsghdr *) recvbuf, \
+ recvmsg_len, nlmsg_rem) {
+ struct nlattr *nla;
+ int nla_rem;
+
+ /* Check type */
+ switch (nlh->nlmsg_type) {
+ case NLMSG_DONE:
+ goto return_genl_id;
+ break;
+ case NLMSG_ERROR:
+
+ /* Should check nlmsgerr struct received */
+ fprintf(stderr, "Receive message error\n");
+ goto error_recvbuf;
+ case NLMSG_OVERRUN:
+ fprintf(stderr, "Receive data partly lost\n");
+ goto error_recvbuf;
+ case NLMSG_MIN_TYPE:
+ case NLMSG_NOOP:
+ break;
+ default:
+ break;
+ }
+
+
+
+ /* Check flags */
+ if (nlh->nlmsg_flags & NLM_F_MULTI)
+ nlm_f_multi = 1;
+ else
+ nlm_f_multi = 0;
+
+ if (nlh->nlmsg_type & NLMSG_DONE)
+ nlmsg_done = 1;
+ else
+ nlmsg_done = 0;
+
+ /* Iteratve over attributes */
+ nla_for_each_attr(nla,
+ nlmsg_attrdata(nlh, GENL_HDRLEN),
+ nlmsg_attrlen(nlh, GENL_HDRLEN),
+ nla_rem){
+
+ /* If this family is nl80211 */
+ if (nla->nla_type == CTRL_ATTR_FAMILY_NAME &&
+ !strcmp((char *)nla_data(nla),
+ "nl80211"))
+ nl80211_flag = 1;
+
+ /* Save the family id */
+ else if (nl80211_flag &&
+ nla->nla_type == CTRL_ATTR_FAMILY_ID)
+ nl80211_genl_id = \
+ *((int *)nla_data(nla));
+
+ }
+
+ }
+
+ } while (nlm_f_multi && !nlmsg_done);
+
+return_genl_id:
+ /* Return family id as cache pointer */
+ *result = (struct nl_cache *) nl80211_genl_id;
+ rc = 0;
+error_recvbuf:
+ free(recvbuf);
+error:
+ return rc;
+}
+
+/* Checks the netlink cache to find family reference by name string */
+/* NOTE: Caller needs to call genl_family_put() when done with *
+ * returned object */
+struct genl_family *genl_ctrl_search_by_name(struct nl_cache *cache, \
+ const char *name)
+{
+ /* TODO: When will we release this memory ? */
+ struct genl_family *gf = (struct genl_family *) \
+ malloc(sizeof(struct genl_family));
+ if (!gf)
+ goto fail;
+ memset(gf, 0, sizeof(*gf));
+
+ /* Add ref */
+ gf->ce_refcnt++;
+
+ /* Overriding cache pointer as family id for now */
+ gf->gf_id = (uint16_t) ((uint32_t) cache);
+ strcpy(gf->gf_name, "nl80211");
+
+ return gf;
+fail:
+ return NULL;
+
+}
+
+int genl_ctrl_resolve(struct nl_sock *sk, const char *name)
+{
+ /* Hack to support wpa_supplicant */
+ if (strcmp(name, "nlctrl") == 0)
+ return NETLINK_GENERIC;
+ else {
+ int errsv = errno;
+ fprintf(stderr, \
+ "Only nlctrl supported by genl_ctrl_resolve!\n");
+ return -errsv;
+ }
+
+}
+
View
92 libnl_2/handlers.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* NOTICE: This is a clean room re-implementation of libnl */
+
+#include <malloc.h>
+#include "netlink-types.h"
+#include "netlink/handlers.h"
+
+/* Allocate a new callback handle. */
+struct nl_cb *nl_cb_alloc(enum nl_cb_kind kind)
+{
+ struct nl_cb *cb;
+
+ cb = (struct nl_cb *) malloc(sizeof(struct nl_cb));
+ if (cb == NULL)
+ goto fail;
+ memset(cb, 0, sizeof(*cb));
+
+ return nl_cb_get(cb);
+fail:
+ return NULL;
+}
+
+/* Clone an existing callback handle */
+struct nl_cb *nl_cb_clone(struct nl_cb *orig)
+{
+ struct nl_cb *new_cb;
+ int new_refcnt;
+
+ new_cb = nl_cb_alloc(NL_CB_DEFAULT);
+ if (new_cb == NULL)
+ goto fail;
+
+ /* Preserve reference count and copy original */
+ new_refcnt = new_cb->cb_refcnt;
+ memcpy(new_cb, orig, sizeof(*orig));
+ new_cb->cb_refcnt = new_refcnt;
+
+ return new_cb;
+fail:
+ return NULL;
+}
+
+/* Set up a callback. */
+int nl_cb_set(struct nl_cb *cb, enum nl_cb_type type, enum nl_cb_kind kind, \
+ nl_recvmsg_msg_cb_t func, void *arg)
+{
+ cb->cb_set[type] = func;
+ cb->cb_args[type] = arg;
+ return 0;
+}
+
+
+
+/* Set up an error callback. */
+int nl_cb_err(struct nl_cb *cb, enum nl_cb_kind kind, \
+ nl_recvmsg_err_cb_t func, void *arg)
+{
+ cb->cb_err = func;
+ cb->cb_err_arg = arg;
+ return 0;
+
+}
+
+struct nl_cb *nl_cb_get(struct nl_cb *cb)
+{
+ cb->cb_refcnt++;
+ return cb;
+}
+
+void nl_cb_put(struct nl_cb *cb)
+{
+ cb->cb_refcnt--;
+ if (cb->cb_refcnt <= 0)
+ free(cb);
+
+}
+
View
20 libnl_2/include/netlink-generic.h
@@ -0,0 +1,20 @@
+/*
+ * netlink-generic.h Local Generic Netlink Interface
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_GENL_PRIV_H_
+#define NETLINK_GENL_PRIV_H_
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+
+#define GENL_HDRSIZE(hdrlen) (GENL_HDRLEN + (hdrlen))
+
+#endif
View
186 libnl_2/include/netlink-local.h
@@ -0,0 +1,186 @@
+/*
+ * netlink-local.h Local Netlink Interface
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_LOCAL_H_
+#define NETLINK_LOCAL_H_
+
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <math.h>
+#include <time.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <inttypes.h>
+#include <assert.h>
+#include <limits.h>
+
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#ifndef SOL_NETLINK
+#define SOL_NETLINK 270
+#endif
+
+#include <linux/types.h>
+
+/* local header copies */
+#include <linux/if.h>
+#include <linux/if_arp.h>
+#include <linux/if_ether.h>
+#include <linux/pkt_sched.h>
+#include <linux/pkt_cls.h>
+#include <linux/gen_stats.h>
+#include <linux/ip_mp_alg.h>
+
+#include <netlink/netlink.h>
+#include <netlink/handlers.h>
+#include <netlink/cache.h>
+#include <netlink/route/tc.h>
+#include <netlink/object-api.h>
+#include <netlink/cache-api.h>
+#include <netlink-types.h>
+
+struct trans_tbl {
+ int i;
+ const char *a;
+};
+
+#define __ADD(id, name) { .i = id, .a = #name },
+
+struct trans_list {
+ int i;
+ char *a;
+ struct nl_list_head list;
+};
+
+#define NL_DEBUG 1
+
+#define NL_DBG(LVL,FMT,ARG...) \
+ do { \
+ if (LVL <= nl_debug) \
+ fprintf(stderr, "DBG<" #LVL ">: " FMT, ##ARG); \
+ } while (0)
+
+#define BUG() \
+ do { \
+ fprintf(stderr, "BUG: %s:%d\n", \
+ __FILE__, __LINE__); \
+ assert(0); \
+ } while (0)
+
+extern int __nl_read_num_str_file(const char *path,
+ int (*cb)(long, const char *));
+
+extern int __trans_list_add(int, const char *, struct nl_list_head *);
+extern void __trans_list_clear(struct nl_list_head *);
+
+extern char *__type2str(int, char *, size_t, struct trans_tbl *, size_t);
+extern int __str2type(const char *, struct trans_tbl *, size_t);
+
+extern char *__list_type2str(int, char *, size_t, struct nl_list_head *);
+extern int __list_str2type(const char *, struct nl_list_head *);
+
+extern char *__flags2str(int, char *, size_t, struct trans_tbl *, size_t);
+extern int __str2flags(const char *, struct trans_tbl *, size_t);
+
+extern void dump_from_ops(struct nl_object *, struct nl_dump_params *);
+
+static inline struct nl_cache *dp_cache(struct nl_object *obj)
+{
+ if (obj->ce_cache == NULL)
+ return nl_cache_mngt_require(obj->ce_ops->oo_name);
+
+ return obj->ce_cache;
+}
+
+static inline int nl_cb_call(struct nl_cb *cb, int type, struct nl_msg *msg)
+{
+ return cb->cb_set[type](msg, cb->cb_args[type]);
+}
+
+#define ARRAY_SIZE(X) (sizeof(X) / sizeof((X)[0]))
+#ifndef offsetof
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
+
+#define __init __attribute__ ((constructor))
+#define __exit __attribute__ ((destructor))
+#undef __deprecated
+#define __deprecated __attribute__ ((deprecated))
+
+#define min(x,y) ({ \
+ typeof(x) _x = (x); \
+ typeof(y) _y = (y); \
+ (void) (&_x == &_y); \
+ _x < _y ? _x : _y; })
+
+#define max(x,y) ({ \
+ typeof(x) _x = (x); \
+ typeof(y) _y = (y); \
+ (void) (&_x == &_y); \
+ _x > _y ? _x : _y; })
+
+#define min_t(type,x,y) \
+ ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
+#define max_t(type,x,y) \
+ ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
+
+extern int nl_cache_parse(struct nl_cache_ops *, struct sockaddr_nl *,
+ struct nlmsghdr *, struct nl_parser_param *);
+
+
+static inline void rtnl_copy_ratespec(struct rtnl_ratespec *dst,
+ struct tc_ratespec *src)
+{
+ dst->rs_cell_log = src->cell_log;
+ dst->rs_feature = src->feature;
+ dst->rs_addend = src->addend;
+ dst->rs_mpu = src->mpu;
+ dst->rs_rate = src->rate;
+}
+
+static inline void rtnl_rcopy_ratespec(struct tc_ratespec *dst,
+ struct rtnl_ratespec *src)
+{
+ dst->cell_log = src->rs_cell_log;
+ dst->feature = src->rs_feature;
+ dst->addend = src->rs_addend;
+ dst->mpu = src->rs_mpu;
+ dst->rate = src->rs_rate;
+}
+
+static inline char *nl_cache_name(struct nl_cache *cache)
+{
+ return cache->c_ops ? cache->c_ops->co_name : "unknown";
+}
+
+#define GENL_FAMILY(id, name) \
+ { \
+ { id, NL_ACT_UNSPEC, name }, \
+ END_OF_MSGTYPES_LIST, \
+ }
+
+static inline int wait_for_ack(struct nl_sock *sk)
+{
+ if (sk->s_flags & NL_NO_AUTO_ACK)
+ return 0;
+ else
+ return nl_wait_for_ack(sk);
+}
+
+#endif
View
832 libnl_2/include/netlink-types.h
@@ -0,0 +1,832 @@
+/*
+ * netlink-types.h Netlink Types (Private)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_LOCAL_TYPES_H_
+#define NETLINK_LOCAL_TYPES_H_
+
+#include <netlink/list.h>
+#include <netlink/route/link.h>
+#include <netlink/route/qdisc.h>
+#include <netlink/route/rtnl.h>
+#include <netlink/route/route.h>
+#include <netlink/object-api.h>
+#include <linux/socket.h>
+#include <linux/pkt_sched.h>
+
+#define NL_SOCK_BUFSIZE_SET (1<<0)
+#define NL_SOCK_PASSCRED (1<<1)
+#define NL_OWN_PORT (1<<2)
+#define NL_MSG_PEEK (1<<3)
+#define NL_NO_AUTO_ACK (1<<4)
+
+#define NL_MSG_CRED_PRESENT 1
+
+struct nl_cache_ops;
+struct nl_sock;
+struct nl_object;
+
+struct nl_cb
+{
+ nl_recvmsg_msg_cb_t cb_set[NL_CB_TYPE_MAX+1];
+ void * cb_args[NL_CB_TYPE_MAX+1];
+
+ nl_recvmsg_err_cb_t cb_err;
+ void * cb_err_arg;
+
+ /** May be used to replace nl_recvmsgs with your own implementation
+ * in all internal calls to nl_recvmsgs. */
+ int (*cb_recvmsgs_ow)(struct nl_sock *,
+ struct nl_cb *);
+
+ /** Overwrite internal calls to nl_recv, must return the number of
+ * octets read and allocate a buffer for the received data. */
+ int (*cb_recv_ow)(struct nl_sock *,
+ struct sockaddr_nl *,
+ unsigned char **,
+ struct ucred **);
+
+ /** Overwrites internal calls to nl_send, must send the netlink
+ * message. */
+ int (*cb_send_ow)(struct nl_sock *,
+ struct nl_msg *);
+
+ int cb_refcnt;
+};
+
+struct nl_sock
+{
+ struct sockaddr_nl s_local;
+ struct sockaddr_nl s_peer;
+ int s_fd;
+ int s_proto;
+ unsigned int s_seq_next;
+ unsigned int s_seq_expect;
+ int s_flags;
+ struct nl_cb * s_cb;
+};
+
+struct nl_cache
+{
+ struct nl_list_head c_items;
+ int c_nitems;
+ int c_iarg1;
+ int c_iarg2;
+ struct nl_cache_ops * c_ops;
+};
+
+struct nl_cache_assoc
+{
+ struct nl_cache * ca_cache;
+ change_func_t ca_change;
+ void * ca_change_data;
+};
+
+struct nl_cache_mngr
+{
+ int cm_protocol;
+ int cm_flags;
+ int cm_nassocs;
+ struct nl_sock * cm_handle;
+ struct nl_cache_assoc * cm_assocs;
+};
+
+struct nl_parser_param;
+
+#define LOOSE_COMPARISON 1
+
+#define NL_OBJ_MARK 1
+
+struct nl_object
+{
+ NLHDR_COMMON
+};
+
+struct nl_data
+{
+ size_t d_size;
+ void * d_data;
+};
+
+struct nl_addr
+{
+ int a_family;
+ unsigned int a_maxsize;
+ unsigned int a_len;
+ int a_prefixlen;
+ int a_refcnt;
+ char a_addr[0];
+};
+
+struct nl_msg
+{
+ int nm_protocol;
+ int nm_flags;
+ struct sockaddr_nl nm_src;
+ struct sockaddr_nl nm_dst;
+ struct ucred nm_creds;
+ struct nlmsghdr * nm_nlh;
+ size_t nm_size;
+ int nm_refcnt;
+};
+
+struct rtnl_link_map
+{
+ uint64_t lm_mem_start;
+ uint64_t lm_mem_end;
+ uint64_t lm_base_addr;
+ uint16_t lm_irq;
+ uint8_t lm_dma;
+ uint8_t lm_port;
+};
+
+#define IFQDISCSIZ 32
+
+struct rtnl_link
+{
+ NLHDR_COMMON
+
+ char l_name[IFNAMSIZ];
+
+ uint32_t l_family;
+ uint32_t l_arptype;
+ uint32_t l_index;
+ uint32_t l_flags;
+ uint32_t l_change;
+ uint32_t l_mtu;
+ uint32_t l_link;
+ uint32_t l_txqlen;
+ uint32_t l_weight;
+ uint32_t l_master;
+ struct nl_addr *l_addr;
+ struct nl_addr *l_bcast;
+ char l_qdisc[IFQDISCSIZ];
+ struct rtnl_link_map l_map;
+ uint64_t l_stats[RTNL_LINK_STATS_MAX+1];
+ uint32_t l_flag_mask;
+ uint8_t l_operstate;
+ uint8_t l_linkmode;
+ /* 2 byte hole */
+ struct rtnl_link_info_ops *l_info_ops;
+ void * l_info;
+};
+
+struct rtnl_ncacheinfo
+{
+ uint32_t nci_confirmed; /**< Time since neighbour validty was last confirmed */
+ uint32_t nci_used; /**< Time since neighbour entry was last ued */
+ uint32_t nci_updated; /**< Time since last update */
+ uint32_t nci_refcnt; /**< Reference counter */
+};
+
+
+struct rtnl_neigh
+{
+ NLHDR_COMMON
+ uint32_t n_family;
+ uint32_t n_ifindex;
+ uint16_t n_state;
+ uint8_t n_flags;
+ uint8_t n_type;
+ struct nl_addr *n_lladdr;
+ struct nl_addr *n_dst;
+ uint32_t n_probes;
+ struct rtnl_ncacheinfo n_cacheinfo;
+ uint32_t n_state_mask;
+ uint32_t n_flag_mask;
+};
+
+
+struct rtnl_addr_cacheinfo
+{
+ /* Preferred lifetime in seconds */
+ uint32_t aci_prefered;
+
+ /* Valid lifetime in seconds */
+ uint32_t aci_valid;
+
+ /* Timestamp of creation in 1/100s seince boottime */
+ uint32_t aci_cstamp;
+
+ /* Timestamp of last update in 1/100s since boottime */
+ uint32_t aci_tstamp;
+};
+
+struct rtnl_addr
+{
+ NLHDR_COMMON
+
+ uint8_t a_family;
+ uint8_t a_prefixlen;
+ uint8_t a_flags;
+ uint8_t a_scope;
+ uint32_t a_ifindex;
+
+ struct nl_addr *a_peer;
+ struct nl_addr *a_local;
+ struct nl_addr *a_bcast;
+ struct nl_addr *a_anycast;
+ struct nl_addr *a_multicast;
+
+ struct rtnl_addr_cacheinfo a_cacheinfo;
+
+ char a_label[IFNAMSIZ];
+ uint32_t a_flag_mask;
+};
+
+struct rtnl_nexthop
+{
+ uint8_t rtnh_flags;
+ uint8_t rtnh_flag_mask;
+ uint8_t rtnh_weight;
+ /* 1 byte spare */
+ uint32_t rtnh_ifindex;
+ struct nl_addr * rtnh_gateway;
+ uint32_t ce_mask; /* HACK to support attr macros */
+ struct nl_list_head rtnh_list;
+ uint32_t rtnh_realms;
+};
+
+struct rtnl_route
+{
+ NLHDR_COMMON
+
+ uint8_t rt_family;
+ uint8_t rt_dst_len;
+ uint8_t rt_src_len;
+ uint8_t rt_tos;
+ uint8_t rt_protocol;
+ uint8_t rt_scope;
+ uint8_t rt_type;
+ uint8_t rt_nmetrics;
+ uint32_t rt_flags;
+ struct nl_addr * rt_dst;
+ struct nl_addr * rt_src;
+ uint32_t rt_table;
+ uint32_t rt_iif;
+ uint32_t rt_prio;
+ uint32_t rt_metrics[RTAX_MAX];
+ uint32_t rt_metrics_mask;
+ uint32_t rt_nr_nh;
+ struct nl_addr * rt_pref_src;
+ struct nl_list_head rt_nexthops;
+ struct rtnl_rtcacheinfo rt_cacheinfo;
+ uint32_t rt_flag_mask;
+};
+
+struct rtnl_rule
+{
+ NLHDR_COMMON
+
+ uint64_t r_mark;
+ uint32_t r_prio;
+ uint32_t r_realms;
+ uint32_t r_table;
+ uint8_t r_dsfield;
+ uint8_t r_type;
+ uint8_t r_family;
+ uint8_t r_src_len;
+ uint8_t r_dst_len;
+ char r_iif[IFNAMSIZ];
+ struct nl_addr *r_src;
+ struct nl_addr *r_dst;
+ struct nl_addr *r_srcmap;
+};
+
+struct rtnl_neightbl_parms
+{
+ /**
+ * Interface index of the device this parameter set is assigned
+ * to or 0 for the default set.
+ */
+ uint32_t ntp_ifindex;
+
+ /**
+ * Number of references to this parameter set.
+ */
+ uint32_t ntp_refcnt;
+
+ /**
+ * Queue length for pending arp requests, i.e. the number of
+ * packets which are accepted from other layers while the
+ * neighbour address is still being resolved
+ */
+ uint32_t ntp_queue_len;
+
+ /**
+ * Number of requests to send to the user level ARP daemon.
+ * Specify 0 to disable.
+ */
+ uint32_t ntp_app_probes;
+
+ /**
+ * Maximum number of retries for unicast solicitation.
+ */
+ uint32_t ntp_ucast_probes;
+
+ /**
+ * Maximum number of retries for multicast solicitation.
+ */
+ uint32_t ntp_mcast_probes;
+
+ /**
+ * Base value in milliseconds to ompute reachable time, see RFC2461.
+ */
+ uint64_t ntp_base_reachable_time;
+
+ /**
+ * Actual reachable time (read-only)
+ */
+ uint64_t ntp_reachable_time; /* secs */
+
+ /**
+ * The time in milliseconds between retransmitted Neighbor
+ * Solicitation messages.
+ */
+ uint64_t ntp_retrans_time;
+
+ /**
+ * Interval in milliseconds to check for stale neighbour
+ * entries.
+ */
+ uint64_t ntp_gc_stale_time; /* secs */
+
+ /**
+ * Delay in milliseconds for the first time probe if
+ * the neighbour is reachable.
+ */
+ uint64_t ntp_probe_delay; /* secs */
+
+ /**
+ * Maximum delay in milliseconds of an answer to a neighbour
+ * solicitation message.
+ */
+ uint64_t ntp_anycast_delay;
+
+ /**
+ * Minimum age in milliseconds before a neighbour entry
+ * may be replaced.
+ */
+ uint64_t ntp_locktime;
+
+ /**
+ * Delay in milliseconds before answering to an ARP request
+ * for which a proxy ARP entry exists.
+ */
+ uint64_t ntp_proxy_delay;
+
+ /**
+ * Queue length for the delayed proxy arp requests.
+ */
+ uint32_t ntp_proxy_qlen;
+
+ /**
+ * Mask of available parameter attributes
+ */
+ uint32_t ntp_mask;
+};
+
+#define NTBLNAMSIZ 32
+
+/**
+ * Neighbour table
+ * @ingroup neightbl
+ */
+struct rtnl_neightbl
+{
+ NLHDR_COMMON
+
+ char nt_name[NTBLNAMSIZ];
+ uint32_t nt_family;
+ uint32_t nt_gc_thresh1;
+ uint32_t nt_gc_thresh2;
+ uint32_t nt_gc_thresh3;
+ uint64_t nt_gc_interval;
+ struct ndt_config nt_config;
+ struct rtnl_neightbl_parms nt_parms;
+ struct ndt_stats nt_stats;
+};
+
+struct rtnl_ratespec
+{
+ uint8_t rs_cell_log;
+ uint16_t rs_feature;
+ uint16_t rs_addend;
+ uint16_t rs_mpu;
+ uint32_t rs_rate;
+};
+
+struct rtnl_tstats
+{
+ struct {
+ uint64_t bytes;
+ uint64_t packets;
+ } tcs_basic;
+
+ struct {
+ uint32_t bps;
+ uint32_t pps;
+ } tcs_rate_est;
+
+ struct {
+ uint32_t qlen;
+ uint32_t backlog;
+ uint32_t drops;
+ uint32_t requeues;
+ uint32_t overlimits;
+ } tcs_queue;
+};
+
+#define TCKINDSIZ 32
+
+#define NL_TCA_GENERIC(pre) \
+ NLHDR_COMMON \
+ uint32_t pre ##_family; \
+ uint32_t pre ##_ifindex; \
+ uint32_t pre ##_handle; \
+ uint32_t pre ##_parent; \
+ uint32_t pre ##_info; \
+ char pre ##_kind[TCKINDSIZ]; \
+ struct nl_data * pre ##_opts; \
+ uint64_t pre ##_stats[RTNL_TC_STATS_MAX+1]; \
+ struct nl_data * pre ##_xstats; \
+ struct nl_data * pre ##_subdata; \
+
+
+struct rtnl_tca
+{
+ NL_TCA_GENERIC(tc);
+};
+
+struct rtnl_qdisc
+{
+ NL_TCA_GENERIC(q);
+ struct rtnl_qdisc_ops *q_ops;
+};
+
+struct rtnl_class
+{
+ NL_TCA_GENERIC(c);
+ struct rtnl_class_ops *c_ops;
+};
+
+struct rtnl_cls
+{
+ NL_TCA_GENERIC(c);
+ uint16_t c_prio;
+ uint16_t c_protocol;
+ struct rtnl_cls_ops *c_ops;
+};
+
+struct rtnl_u32
+{
+ uint32_t cu_divisor;
+ uint32_t cu_hash;
+ uint32_t cu_classid;
+ uint32_t cu_link;
+ struct nl_data * cu_pcnt;
+ struct nl_data * cu_selector;
+ struct nl_data * cu_act;
+ struct nl_data * cu_police;
+ char cu_indev[IFNAMSIZ];
+ int cu_mask;
+};
+
+struct rtnl_cgroup
+{
+ struct rtnl_ematch_tree *cg_ematch;
+ int cg_mask;
+};
+
+struct rtnl_fw
+{
+ uint32_t cf_classid;
+ struct nl_data * cf_act;
+ struct nl_data * cf_police;
+ char cf_indev[IFNAMSIZ];
+ int cf_mask;
+};
+
+struct rtnl_ematch
+{
+ uint16_t e_id;
+ uint16_t e_kind;
+ uint16_t e_flags;
+
+ struct nl_list_head e_childs;
+ struct nl_list_head e_list;
+ struct rtnl_ematch_ops *e_ops;
+
+ char e_data[0];
+};
+
+struct rtnl_ematch_tree
+{
+ uint16_t et_progid;
+ struct nl_list_head et_list;
+
+};
+
+struct rtnl_dsmark_qdisc
+{
+ uint16_t qdm_indices;
+ uint16_t qdm_default_index;
+ uint32_t qdm_set_tc_index;
+ uint32_t qdm_mask;
+};
+
+struct rtnl_dsmark_class
+{
+ uint8_t cdm_bmask;
+ uint8_t cdm_value;
+ uint32_t cdm_mask;
+};
+
+struct rtnl_fifo
+{
+ uint32_t qf_limit;
+ uint32_t qf_mask;
+};
+
+struct rtnl_prio
+{
+ uint32_t qp_bands;
+ uint8_t qp_priomap[TC_PRIO_MAX+1];
+ uint32_t qp_mask;
+};
+
+struct rtnl_tbf
+{
+ uint32_t qt_limit;
+ uint32_t qt_mpu;
+ struct rtnl_ratespec qt_rate;
+ uint32_t qt_rate_bucket;
+ uint32_t qt_rate_txtime;
+ struct rtnl_ratespec qt_peakrate;
+ uint32_t qt_peakrate_bucket;
+ uint32_t qt_peakrate_txtime;
+ uint32_t qt_mask;
+};
+
+struct rtnl_sfq
+{
+ uint32_t qs_quantum;
+ uint32_t qs_perturb;
+ uint32_t qs_limit;
+ uint32_t qs_divisor;
+ uint32_t qs_flows;
+ uint32_t qs_mask;
+};
+
+struct rtnl_netem_corr
+{
+ uint32_t nmc_delay;
+ uint32_t nmc_loss;
+ uint32_t nmc_duplicate;
+};
+
+struct rtnl_netem_reo
+{
+ uint32_t nmro_probability;
+ uint32_t nmro_correlation;
+};
+
+struct rtnl_netem_crpt
+{
+ uint32_t nmcr_probability;
+ uint32_t nmcr_correlation;
+};
+
+struct rtnl_netem_dist
+{
+ int16_t * dist_data;
+ size_t dist_size;
+};
+
+struct rtnl_netem
+{
+ uint32_t qnm_latency;
+ uint32_t qnm_limit;
+ uint32_t qnm_loss;
+ uint32_t qnm_gap;
+ uint32_t qnm_duplicate;
+ uint32_t qnm_jitter;
+ uint32_t qnm_mask;
+ struct rtnl_netem_corr qnm_corr;
+ struct rtnl_netem_reo qnm_ro;
+ struct rtnl_netem_crpt qnm_crpt;
+ struct rtnl_netem_dist qnm_dist;
+};
+
+struct rtnl_htb_qdisc
+{
+ uint32_t qh_rate2quantum;
+ uint32_t qh_defcls;
+ uint32_t qh_mask;
+};
+
+struct rtnl_htb_class
+{
+ uint32_t ch_prio;
+ uint32_t ch_mtu;
+ struct rtnl_ratespec ch_rate;
+ struct rtnl_ratespec ch_ceil;
+ uint32_t ch_rbuffer;
+ uint32_t ch_cbuffer;
+ uint32_t ch_quantum;
+ uint8_t ch_overhead;
+ uint8_t ch_mpu;
+ uint32_t ch_mask;
+};
+
+struct rtnl_cbq
+{
+ struct tc_cbq_lssopt cbq_lss;
+ struct tc_ratespec cbq_rate;
+ struct tc_cbq_wrropt cbq_wrr;
+ struct tc_cbq_ovl cbq_ovl;
+ struct tc_cbq_fopt cbq_fopt;
+ struct tc_cbq_police cbq_police;
+};
+
+struct rtnl_red
+{
+ uint32_t qr_limit;
+ uint32_t qr_qth_min;
+ uint32_t qr_qth_max;
+ uint8_t qr_flags;
+ uint8_t qr_wlog;
+ uint8_t qr_plog;
+ uint8_t qr_scell_log;
+ uint32_t qr_mask;
+};
+
+struct flnl_request
+{
+ NLHDR_COMMON
+
+ struct nl_addr * lr_addr;
+ uint32_t lr_fwmark;
+ uint8_t lr_tos;
+ uint8_t lr_scope;
+ uint8_t lr_table;
+};
+
+
+struct flnl_result
+{
+ NLHDR_COMMON
+
+ struct flnl_request * fr_req;
+ uint8_t fr_table_id;
+ uint8_t fr_prefixlen;
+ uint8_t fr_nh_sel;
+ uint8_t fr_type;
+ uint8_t fr_scope;
+ uint32_t fr_error;
+};
+
+#define GENL_OP_HAS_POLICY 1
+#define GENL_OP_HAS_DOIT 2
+#define GENL_OP_HAS_DUMPIT 4
+
+struct genl_family_op
+{
+ uint32_t o_id;
+ uint32_t o_flags;
+
+ struct nl_list_head o_list;
+};
+
+struct genl_family
+{
+ NLHDR_COMMON
+
+ uint16_t gf_id;
+ char gf_name[GENL_NAMSIZ];
+ uint32_t gf_version;
+ uint32_t gf_hdrsize;
+ uint32_t gf_maxattr;
+
+ struct nl_list_head gf_ops;
+};
+
+union nfnl_ct_proto
+{
+ struct {
+ uint16_t src;
+ uint16_t dst;
+ } port;
+ struct {
+ uint16_t id;
+ uint8_t type;
+ uint8_t code;
+ } icmp;
+};
+
+struct nfnl_ct_dir {
+ struct nl_addr * src;
+ struct nl_addr * dst;
+ union nfnl_ct_proto proto;
+ uint64_t packets;
+ uint64_t bytes;
+};
+
+union nfnl_ct_protoinfo {
+ struct {
+ uint8_t state;
+ } tcp;
+};
+
+struct nfnl_ct {
+ NLHDR_COMMON
+
+ uint8_t ct_family;
+ uint8_t ct_proto;
+ union nfnl_ct_protoinfo ct_protoinfo;
+
+ uint32_t ct_status;
+ uint32_t ct_status_mask;
+ uint32_t ct_timeout;
+ uint32_t ct_mark;
+ uint32_t ct_use;
+ uint32_t ct_id;
+
+ struct nfnl_ct_dir ct_orig;
+ struct nfnl_ct_dir ct_repl;
+};
+
+struct nfnl_log {
+ NLHDR_COMMON
+
+ uint16_t log_group;
+ uint8_t log_copy_mode;
+ uint32_t log_copy_range;
+ uint32_t log_flush_timeout;
+ uint32_t log_alloc_size;
+ uint32_t log_queue_threshold;
+ uint32_t log_flags;
+ uint32_t log_flag_mask;
+};
+
+struct nfnl_log_msg {
+ NLHDR_COMMON
+
+ uint8_t log_msg_family;
+ uint8_t log_msg_hook;
+ uint16_t log_msg_hwproto;
+ uint32_t log_msg_mark;
+ struct timeval log_msg_timestamp;
+ uint32_t log_msg_indev;
+ uint32_t log_msg_outdev;
+ uint32_t log_msg_physindev;
+ uint32_t log_msg_physoutdev;
+ uint8_t log_msg_hwaddr[8];
+ int log_msg_hwaddr_len;
+ void * log_msg_payload;
+ int log_msg_payload_len;
+ char * log_msg_prefix;
+ uint32_t log_msg_uid;
+ uint32_t log_msg_gid;
+ uint32_t log_msg_seq;
+ uint32_t log_msg_seq_global;
+};
+
+struct nfnl_queue {
+ NLHDR_COMMON
+
+ uint16_t queue_group;
+ uint32_t queue_maxlen;
+ uint32_t queue_copy_range;
+ uint8_t queue_copy_mode;
+};
+
+struct nfnl_queue_msg {
+ NLHDR_COMMON
+
+ uint16_t queue_msg_group;
+ uint8_t queue_msg_family;
+ uint8_t queue_msg_hook;
+ uint16_t queue_msg_hwproto;
+ uint32_t queue_msg_packetid;
+ uint32_t queue_msg_mark;
+ struct timeval queue_msg_timestamp;
+ uint32_t queue_msg_indev;
+ uint32_t queue_msg_outdev;
+ uint32_t queue_msg_physindev;
+ uint32_t queue_msg_physoutdev;
+ uint8_t queue_msg_hwaddr[8];
+ int queue_msg_hwaddr_len;
+ void * queue_msg_payload;
+ int queue_msg_payload_len;
+ uint32_t queue_msg_verdict;
+};
+
+#endif
View
69 libnl_2/include/netlink/addr.h
@@ -0,0 +1,69 @@
+/*
+ * netlink/addr.h Abstract Address
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_ADDR_H_
+#define NETLINK_ADDR_H_
+
+#include <netlink/netlink.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct nl_addr;
+
+/* Creation */
+extern struct nl_addr * nl_addr_alloc(size_t);
+extern struct nl_addr * nl_addr_alloc_attr(struct nlattr *, int);
+extern struct nl_addr * nl_addr_build(int, void *, size_t);
+extern int nl_addr_parse(const char *, int, struct nl_addr **);
+extern struct nl_addr * nl_addr_clone(struct nl_addr *);
+
+/* Destroyage */
+extern void nl_addr_destroy(struct nl_addr *);
+
+/* Usage Management */
+extern struct nl_addr * nl_addr_get(struct nl_addr *);
+extern void nl_addr_put(struct nl_addr *);
+extern int nl_addr_shared(struct nl_addr *);
+
+extern int nl_addr_cmp(struct nl_addr *, struct nl_addr *);
+extern int nl_addr_cmp_prefix(struct nl_addr *, struct nl_addr *);
+extern int nl_addr_iszero(struct nl_addr *);
+extern int nl_addr_valid(char *, int);
+extern int nl_addr_guess_family(struct nl_addr *);
+extern int nl_addr_fill_sockaddr(struct nl_addr *,
+ struct sockaddr *, socklen_t *);
+extern int nl_addr_info(struct nl_addr *, struct addrinfo **);
+extern int nl_addr_resolve(struct nl_addr *addr, char *host, size_t hostlen);
+
+/* Access Functions */
+extern void nl_addr_set_family(struct nl_addr *, int);
+extern int nl_addr_get_family(struct nl_addr *);
+extern int nl_addr_set_binary_addr(struct nl_addr *, void *,
+ size_t);
+extern void * nl_addr_get_binary_addr(struct nl_addr *);
+extern unsigned int nl_addr_get_len(struct nl_addr *);
+extern void nl_addr_set_prefixlen(struct nl_addr *, int);
+extern unsigned int nl_addr_get_prefixlen(struct nl_addr *);
+
+/* Address Family Translations */
+extern char * nl_af2str(int, char *, size_t);
+extern int nl_str2af(const char *);
+
+/* Translations to Strings */
+extern char * nl_addr2str(struct nl_addr *, char *, size_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
View
283 libnl_2/include/netlink/attr.h
@@ -0,0 +1,283 @@
+/*
+ * netlink/attr.h Netlink Attributes
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_ATTR_H_
+#define NETLINK_ATTR_H_
+
+#include <netlink/netlink.h>
+#include <netlink/object.h>
+#include <netlink/addr.h>
+#include <netlink/data.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct nl_msg;
+
+/**
+ * @name Basic Attribute Data Types
+ * @{
+ */
+
+ /**
+ * @ingroup attr
+ * Basic attribute data types
+ *
+ * See \ref attr_datatypes for more details.
+ */
+enum {
+ NLA_UNSPEC, /**< Unspecified type, binary data chunk */
+ NLA_U8, /**< 8 bit integer */
+ NLA_U16, /**< 16 bit integer */
+ NLA_U32, /**< 32 bit integer */
+ NLA_U64, /**< 64 bit integer */
+ NLA_STRING, /**< NUL terminated character string */
+ NLA_FLAG, /**< Flag */
+ NLA_MSECS, /**< Micro seconds (64bit) */
+ NLA_NESTED, /**< Nested attributes */
+ __NLA_TYPE_MAX,
+};
+
+#define NLA_TYPE_MAX (__NLA_TYPE_MAX - 1)
+
+/** @} */
+
+/**
+ * @ingroup attr
+ * Attribute validation policy.
+ *
+ * See \ref attr_datatypes for more details.
+ */
+struct nla_policy {
+ /** Type of attribute or NLA_UNSPEC */
+ uint16_t type;
+
+ /** Minimal length of payload required */
+ uint16_t minlen;
+
+ /** Maximal length of payload allowed */
+ uint16_t maxlen;
+};
+
+/* Size calculations */
+extern int nla_attr_size(int payload);
+extern int nla_total_size(int payload);
+extern int nla_padlen(int payload);
+
+/* Attribute parsing */
+extern int nla_type(const struct nlattr *);
+extern void * nla_data(const struct nlattr *);
+extern int nla_len(const struct nlattr *);
+extern int nla_ok(const struct nlattr *, int);
+extern struct nlattr * nla_next(const struct nlattr *, int *);
+extern int nla_parse(struct nlattr **, int, struct nlattr *,
+ int, struct nla_policy *);
+extern int nla_validate(struct nlattr *, int, int,
+ struct nla_policy *);
+extern struct nlattr * nla_find(struct nlattr *, int, int);
+
+/* Helper Functions */
+extern int nla_memcpy(void *, struct nlattr *, int);
+extern size_t nla_strlcpy(char *, const struct nlattr *, size_t);
+extern int nla_memcmp(const struct nlattr *, const void *, size_t);
+extern int nla_strcmp(const struct nlattr *, const char *);
+
+/* Unspecific attribute */
+extern struct nlattr * nla_reserve(struct nl_msg *, int, int);
+extern int nla_put(struct nl_msg *, int, int, const void *);
+extern int nla_put_data(struct nl_msg *, int, struct nl_data *);
+extern int nla_put_addr(struct nl_msg *, int, struct nl_addr *);
+
+/* Integer attribute */
+extern uint8_t nla_get_u8(struct nlattr *);
+extern int nla_put_u8(struct nl_msg *, int, uint8_t);
+extern uint16_t nla_get_u16(struct nlattr *);
+extern int nla_put_u16(struct nl_msg *, int, uint16_t);
+extern uint32_t nla_get_u32(struct nlattr *);
+extern int nla_put_u32(struct nl_msg *, int, uint32_t);
+extern uint64_t nla_get_u64(struct nlattr *);
+extern int nla_put_u64(struct nl_msg *, int, uint64_t);
+
+/* String attribute */
+extern char * nla_get_string(struct nlattr *);
+extern char * nla_strdup(struct nlattr *);
+extern int nla_put_string(struct nl_msg *, int, const char *);
+
+/* Flag attribute */
+extern int nla_get_flag(struct nlattr *);
+extern int nla_put_flag(struct nl_msg *, int);
+
+/* Msec attribute */
+extern unsigned long nla_get_msecs(struct nlattr *);
+extern int nla_put_msecs(struct nl_msg *, int, unsigned long);
+
+/* Attribute nesting */
+extern int nla_put_nested(struct nl_msg *, int, struct nl_msg *);
+extern struct nlattr * nla_nest_start(struct nl_msg *, int);
+extern int nla_nest_end(struct nl_msg *, struct nlattr *);
+extern int nla_parse_nested(struct nlattr **, int, struct nlattr *,
+ struct nla_policy *);
+
+/**
+ * @name Attribute Construction (Exception Based)
+ * @{
+ */
+
+/**
+ * @ingroup attr
+ * Add unspecific attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg attrlen Length of attribute payload.
+ * @arg data Head of attribute payload.
+ */
+#define NLA_PUT(msg, attrtype, attrlen, data) \
+ do { \
+ if (nla_put(msg, attrtype, attrlen, data) < 0) \
+ goto nla_put_failure; \
+ } while(0)
+
+/**
+ * @ingroup attr
+ * Add atomic type attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg type Atomic type.
+ * @arg attrtype Attribute type.
+ * @arg value Head of attribute payload.
+ */
+#define NLA_PUT_TYPE(msg, type, attrtype, value) \
+ do { \
+ type __tmp = value; \
+ NLA_PUT(msg, attrtype, sizeof(type), &__tmp); \
+ } while(0)
+
+/**
+ * Add 8 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value.
+ */
+#define NLA_PUT_U8(msg, attrtype, value) \
+ NLA_PUT_TYPE(msg, uint8_t, attrtype, value)
+
+/**
+ * Add 16 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value.
+ */
+#define NLA_PUT_U16(msg, attrtype, value) \
+ NLA_PUT_TYPE(msg, uint16_t, attrtype, value)
+
+/**
+ * Add 32 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value.
+ */
+#define NLA_PUT_U32(msg, attrtype, value) \
+ NLA_PUT_TYPE(msg, uint32_t, attrtype, value)
+
+/**
+ * Add 64 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value.
+ */
+#define NLA_PUT_U64(msg, attrtype, value) \
+ NLA_PUT_TYPE(msg, uint64_t, attrtype, value)
+
+/**
+ * Add string attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value NUL terminated character string.
+ */
+#define NLA_PUT_STRING(msg, attrtype, value) \
+ NLA_PUT(msg, attrtype, strlen(value) + 1, value)
+
+/**
+ * Add flag attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ */
+#define NLA_PUT_FLAG(msg, attrtype) \
+ NLA_PUT(msg, attrtype, 0, NULL)
+
+/**
+ * Add msecs attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg msecs Numeric value in micro seconds.
+ */
+#define NLA_PUT_MSECS(msg, attrtype, msecs) \
+ NLA_PUT_U64(msg, attrtype, msecs)
+
+/**
+ * Add address attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg addr Abstract address object.
+ */
+#define NLA_PUT_ADDR(msg, attrtype, addr) \
+ NLA_PUT(msg, attrtype, nl_addr_get_len(addr), \
+ nl_addr_get_binary_addr(addr))
+
+/**
+ * Add abstract data attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg data Abstract data object.
+ */
+#define NLA_PUT_DATA(msg, attrtype, data) \
+ NLA_PUT(msg, attrtype, nl_data_get_size(data), \
+ nl_data_get(data))
+
+/** @} */
+
+/**
+ * @name Iterators
+ * @{
+ */
+
+/**
+ * @ingroup attr
+ * Iterate over a stream of attributes
+ * @arg pos loop counter, set to current attribute
+ * @arg head head of attribute stream
+ * @arg len length of attribute stream
+ * @arg rem initialized to len, holds bytes currently remaining in stream
+ */
+#define nla_for_each_attr(pos, head, len, rem) \
+ for (pos = head, rem = len; \
+ nla_ok(pos, rem); \
+ pos = nla_next(pos, &(rem)))
+
+/**
+ * @ingroup attr
+ * Iterate over a stream of nested attributes
+ * @arg pos loop counter, set to current attribute
+ * @arg nla attribute containing the nested attributes
+ * @arg rem initialized to len, holds bytes currently remaining in stream
+ */
+#define nla_for_each_nested(pos, nla, rem) \
+ for (pos = nla_data(nla), rem = nla_len(nla); \
+ nla_ok(pos, rem); \
+ pos = nla_next(pos, &(rem)))
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
View
199 libnl_2/include/netlink/cache-api.h
@@ -0,0 +1,199 @@
+/*
+ * netlink/cache-api.h Caching API
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_CACHE_API_H_
+#define NETLINK_CACHE_API_H_
+
+#include <netlink/netlink.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @ingroup cache
+ * @defgroup cache_api Cache Implementation
+ * @brief
+ *
+ * @par 1) Cache Definition
+ * @code
+ * struct nl_cache_ops my_cache_ops = {
+ * .co_name = "route/link",
+ * .co_protocol = NETLINK_ROUTE,
+ * .co_hdrsize = sizeof(struct ifinfomsg),
+ * .co_obj_ops = &my_obj_ops,
+ * };
+ * @endcode
+ *
+ * @par 2)
+ * @code
+ * // The simplest way to fill a cache is by providing a request-update
+ * // function which must trigger a complete dump on the kernel-side of
+ * // whatever the cache covers.
+ * static int my_request_update(struct nl_cache *cache,
+ * struct nl_sock *socket)
+ * {
+ * // In this example, we request a full dump of the interface table
+ * return nl_rtgen_request(socket, RTM_GETLINK, AF_UNSPEC, NLM_F_DUMP);
+ * }
+ *
+ * // The resulting netlink messages sent back will be fed into a message
+ * // parser one at a time. The message parser has to extract all relevant
+ * // information from the message and create an object reflecting the
+ * // contents of the message and pass it on to the parser callback function
+ * // provide which will add the object to the cache.
+ * static int my_msg_parser(struct nl_cache_ops *ops, struct sockaddr_nl *who,
+ * struct nlmsghdr *nlh, struct nl_parser_param *pp)
+ * {
+ * struct my_obj *obj;
+ *
+ * obj = my_obj_alloc();
+ * obj->ce_msgtype = nlh->nlmsg_type;
+ *
+ * // Parse the netlink message and continue creating the object.
+ *
+ * err = pp->pp_cb((struct nl_object *) obj, pp);
+ * if (err < 0)
+ * goto errout;
+ * }
+ *
+ * struct nl_cache_ops my_cache_ops = {
+ * ...
+ * .co_request_update = my_request_update,
+ * .co_msg_parser = my_msg_parser,
+ * };
+ * @endcode
+ *
+ * @par 3) Notification based Updates
+ * @code
+ * // Caches can be kept up-to-date based on notifications if the kernel
+ * // sends out notifications whenever an object is added/removed/changed.
+ * //
+ * // It is trivial to support this, first a list of groups needs to be
+ * // defined which are required to join in order to receive all necessary
+ * // notifications. The groups are separated by address family to support
+ * // the common situation where a separate group is used for each address
+ * // family. If there is only one group, simply specify AF_UNSPEC.
+ * static struct nl_af_group addr_groups[] = {
+ * { AF_INET, RTNLGRP_IPV4_IFADDR },
+ * { AF_INET6, RTNLGRP_IPV6_IFADDR },
+ * { END_OF_GROUP_LIST },
+ * };
+ *
+ * // In order for the caching system to know the meaning of each message
+ * // type it requires a table which maps each supported message type to
+ * // a cache action, e.g. RTM_NEWADDR means address has been added or
+ * // updated, RTM_DELADDR means address has been removed.
+ * static struct nl_cache_ops rtnl_addr_ops = {
+ * ...
+ * .co_msgtypes = {
+ * { RTM_NEWADDR, NL_ACT_NEW, "new" },
+ * { RTM_DELADDR, NL_ACT_DEL, "del" },
+ * { RTM_GETADDR, NL_ACT_GET, "get" },
+ * END_OF_MSGTYPES_LIST,
+ * },
+ * .co_groups = addr_groups,
+ * };
+ *
+ * // It is now possible to keep the cache up-to-date using the cache manager.
+ * @endcode
+ * @{
+ */
+
+enum {
+ NL_ACT_UNSPEC,
+ NL_ACT_NEW,
+ NL_ACT_DEL,
+ NL_ACT_GET,
+ NL_ACT_SET,
+ NL_ACT_CHANGE,
+ __NL_ACT_MAX,
+};
+
+#define NL_ACT_MAX (__NL_ACT_MAX - 1)
+
+#define END_OF_MSGTYPES_LIST { -1, -1, NULL }
+
+/**
+ * Message type to cache action association
+ */
+struct nl_msgtype
+{
+ /** Netlink message type */
+ int mt_id;
+
+ /** Cache action to take */
+ int mt_act;
+
+ /** Name of operation for human-readable printing */
+ char * mt_name;
+};
+
+/**
+ * Address family to netlink group association
+ */
+struct nl_af_group
+{
+ /** Address family */
+ int ag_family;
+
+ /** Netlink group identifier */
+ int ag_group;
+};
+
+#define END_OF_GROUP_LIST AF_UNSPEC, 0
+
+struct nl_parser_param
+{
+ int (*pp_cb)(struct nl_object *, struct nl_parser_param *);
+ void * pp_arg;
+};
+
+/**
+ * Cache Operations
+ */
+struct nl_cache_ops
+{
+ char * co_name;
+
+ int co_hdrsize;
+ int co_protocol;
+ struct nl_af_group * co_groups;
+
+ /**
+ * Called whenever an update of the cache is required. Must send
+ * a request message to the kernel requesting a complete dump.
+ */
+ int (*co_request_update)(struct nl_cache *, struct nl_sock *);
+
+ /**
+ * Called whenever a message was received that needs to be parsed.
+ * Must parse the message and call the paser callback function
+ * (nl_parser_param) provided via the argument.
+ */
+ int (*co_msg_parser)(struct nl_cache_ops *, struct sockaddr_nl *,
+ struct nlmsghdr *, struct nl_parser_param *);
+
+ struct nl_object_ops * co_obj_ops;
+
+ struct nl_cache_ops *co_next;
+ struct nl_cache *co_major_cache;
+ struct genl_ops * co_genl;
+ struct nl_msgtype co_msgtypes[];
+};
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
View
129 libnl_2/include/netlink/cache.h
@@ -0,0 +1,129 @@
+/*
+ * netlink/cache.h Caching Module
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_CACHE_H_
+#define NETLINK_CACHE_H_
+
+#include <netlink/netlink.h>
+#include <netlink/msg.h>
+#include <netlink/utils.h>
+#include <netlink/object.h>
+#include <netlink/cache-api.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct nl_cache;
+
+typedef void (*change_func_t)(struct nl_cache *, struct nl_object *, int, void *);
+
+/* Access Functions */
+extern int nl_cache_nitems(struct nl_cache *);
+extern int nl_cache_nitems_filter(struct nl_cache *,
+ struct nl_object *);
+extern struct nl_cache_ops * nl_cache_get_ops(struct nl_cache *);
+extern struct nl_object * nl_cache_get_first(struct nl_cache *);
+extern struct nl_object * nl_cache_get_last(struct nl_cache *);
+extern struct nl_object * nl_cache_get_next(struct nl_object *);
+extern struct nl_object * nl_cache_get_prev(struct nl_object *);
+
+extern struct nl_cache * nl_cache_alloc(struct nl_cache_ops *);
+extern int nl_cache_alloc_and_fill(struct nl_cache_ops *,
+ struct nl_sock *,
+ struct nl_cache **);
+extern int nl_cache_alloc_name(const char *,
+ struct nl_cache **);
+extern struct nl_cache * nl_cache_subset(struct nl_cache *,
+ struct nl_object *);
+extern void nl_cache_clear(struct nl_cache *);
+extern void nl_cache_free(struct nl_cache *);
+
+/* Cache modification */
+extern int nl_cache_add(struct nl_cache *,
+ struct nl_object *);
+extern int nl_cache_parse_and_add(struct nl_cache *,
+ struct nl_msg *);
+extern void nl_cache_remove(struct nl_object *);
+extern int nl_cache_refill(struct nl_sock *,
+ struct nl_cache *);
+extern int nl_cache_pickup(struct nl_sock *,
+ struct nl_cache *);
+extern int nl_cache_resync(struct nl_sock *,
+ struct nl_cache *,
+ change_func_t,
+ void *);
+extern int nl_cache_include(struct nl_cache *,
+ struct nl_object *,
+ change_func_t,
+ void *);
+
+/* General */
+extern int nl_cache_is_empty(struct nl_cache *);
+extern void nl_cache_mark_all(struct nl_cache *);
+
+/* Dumping */
+extern void nl_cache_dump(struct nl_cache *,
+ struct nl_dump_params *);
+extern void nl_cache_dump_filter(struct nl_cache *,
+ struct nl_dump_params *,
+ struct nl_object *);
+
+/* Iterators */
+extern void nl_cache_foreach(struct nl_cache *,
+ void (*cb)(struct nl_object *,
+ void *),
+ void *arg);
+extern void nl_cache_foreach_filter(struct nl_cache *,
+ struct nl_object *,
+ void (*cb)(struct
+ nl_object *,
+ void *),
+ void *arg);
+
+/* --- cache management --- */
+
+/* Cache type management */
+extern struct nl_cache_ops * nl_cache_ops_lookup(const char *);
+extern struct nl_cache_ops * nl_cache_ops_associate(int, int);
+extern struct nl_msgtype * nl_msgtype_lookup(struct nl_cache_ops *, int);
+extern void nl_cache_ops_foreach(void (*cb)(struct nl_cache_ops *, void *), void *);
+extern int nl_cache_mngt_register(struct nl_cache_ops *);
+extern int nl_cache_mngt_unregister(struct nl_cache_ops *);
+
+/* Global cache provisioning/requiring */
+extern void nl_cache_mngt_provide(struct nl_cache *);
+extern void nl_cache_mngt_unprovide(struct nl_cache *);
+extern struct nl_cache * nl_cache_mngt_require(const char *);
+
+struct nl_cache_mngr;
+
+#define NL_AUTO_PROVIDE 1
+
+extern int nl_cache_mngr_alloc(struct nl_sock *,
+ int, int,
+ struct nl_cache_mngr **);
+extern int nl_cache_mngr_add(struct nl_cache_mngr *,
+ const char *,
+ change_func_t,
+ void *,
+ struct nl_cache **);
+extern int nl_cache_mngr_get_fd(struct nl_cache_mngr *);
+extern int nl_cache_mngr_poll(struct nl_cache_mngr *,
+ int);
+extern int nl_cache_mngr_data_ready(struct nl_cache_mngr *);
+extern void nl_cache_mngr_free(struct nl_cache_mngr *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
View
80 libnl_2/include/netlink/cli/utils.h
@@ -0,0 +1,80 @@
+/*
+ * src/utils.h Utilities
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef __NETLINK_CLI_UTILS_H_
+#define __NETLINK_CLI_UTILS_H_
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <limits.h>
+#include