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-rw-r--r--package/libs/libnftnl/patches/101-expr-add-flow-offload-expression.patch259
1 files changed, 0 insertions, 259 deletions
diff --git a/package/libs/libnftnl/patches/101-expr-add-flow-offload-expression.patch b/package/libs/libnftnl/patches/101-expr-add-flow-offload-expression.patch
deleted file mode 100644
index c7d3676acc..0000000000
--- a/package/libs/libnftnl/patches/101-expr-add-flow-offload-expression.patch
+++ /dev/null
@@ -1,259 +0,0 @@
-From: Pablo Neira Ayuso <pablo@netfilter.org>
-Date: Sun, 3 Dec 2017 21:05:54 +0100
-Subject: [PATCH] expr: add flow offload expression
-
-This patch adds the new "flow_offload" expression to select what flows
-are offloaded to an existing flowtable.
-
-Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
----
- create mode 100644 src/expr/flow_offload.c
-
---- a/include/libnftnl/expr.h
-+++ b/include/libnftnl/expr.h
-@@ -221,6 +221,10 @@ enum {
- };
-
- enum {
-+ NFTNL_EXPR_FLOW_TABLE_NAME = NFTNL_EXPR_BASE,
-+};
-+
-+enum {
- NFTNL_EXPR_FWD_SREG_DEV = NFTNL_EXPR_BASE,
- };
-
---- a/include/linux/netfilter/nf_tables.h
-+++ b/include/linux/netfilter/nf_tables.h
-@@ -952,6 +952,17 @@ enum nft_ct_attributes {
- };
- #define NFTA_CT_MAX (__NFTA_CT_MAX - 1)
-
-+/**
-+ * enum nft_flow_attributes - ct offload expression attributes
-+ * @NFTA_FLOW_TABLE_NAME: flow table name (NLA_STRING)
-+ */
-+enum nft_offload_attributes {
-+ NFTA_FLOW_UNSPEC,
-+ NFTA_FLOW_TABLE_NAME,
-+ __NFTA_FLOW_MAX,
-+};
-+#define NFTA_FLOW_MAX (__NFTA_FLOW_MAX - 1)
-+
- enum nft_limit_type {
- NFT_LIMIT_PKTS,
- NFT_LIMIT_PKT_BYTES
---- a/src/Makefile.am
-+++ b/src/Makefile.am
-@@ -32,6 +32,7 @@ libnftnl_la_SOURCES = utils.c \
- expr/data_reg.c \
- expr/dup.c \
- expr/exthdr.c \
-+ expr/flow_offload.c \
- expr/fib.c \
- expr/fwd.c \
- expr/limit.c \
---- /dev/null
-+++ b/src/expr/flow_offload.c
-@@ -0,0 +1,184 @@
-+#include "internal.h"
-+
-+#include <stdio.h>
-+#include <stdint.h>
-+#include <string.h> /* for memcpy */
-+#include <arpa/inet.h>
-+#include <errno.h>
-+#include <libmnl/libmnl.h>
-+#include <linux/netfilter/nf_tables.h>
-+#include <libnftnl/rule.h>
-+#include <libnftnl/expr.h>
-+
-+struct nftnl_expr_flow {
-+ char *table_name;
-+};
-+
-+static int nftnl_expr_flow_set(struct nftnl_expr *e, uint16_t type,
-+ const void *data, uint32_t data_len)
-+{
-+ struct nftnl_expr_flow *flow = nftnl_expr_data(e);
-+
-+ switch (type) {
-+ case NFTNL_EXPR_FLOW_TABLE_NAME:
-+ flow->table_name = strdup((const char *)data);
-+ if (!flow->table_name)
-+ return -1;
-+ break;
-+ default:
-+ return -1;
-+ }
-+ return 0;
-+}
-+
-+static const void *nftnl_expr_flow_get(const struct nftnl_expr *e,
-+ uint16_t type, uint32_t *data_len)
-+{
-+ struct nftnl_expr_flow *flow = nftnl_expr_data(e);
-+
-+ switch(type) {
-+ case NFTNL_EXPR_FLOW_TABLE_NAME:
-+ *data_len = strlen(flow->table_name) + 1;
-+ return flow->table_name;
-+ }
-+ return NULL;
-+}
-+
-+static int nftnl_expr_flow_cb(const struct nlattr *attr, void *data)
-+{
-+ const struct nlattr **tb = data;
-+ int type = mnl_attr_get_type(attr);
-+
-+ if (mnl_attr_type_valid(attr, NFTA_FLOW_MAX) < 0)
-+ return MNL_CB_OK;
-+
-+ switch(type) {
-+ case NFTA_FLOW_TABLE_NAME:
-+ if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0)
-+ abi_breakage();
-+ break;
-+ }
-+
-+ tb[type] = attr;
-+ return MNL_CB_OK;
-+}
-+
-+static void nftnl_expr_flow_build(struct nlmsghdr *nlh,
-+ const struct nftnl_expr *e)
-+{
-+ struct nftnl_expr_flow *flow = nftnl_expr_data(e);
-+
-+ if (e->flags & (1 << NFTNL_EXPR_FLOW_TABLE_NAME))
-+ mnl_attr_put_strz(nlh, NFTA_FLOW_TABLE_NAME, flow->table_name);
-+}
-+
-+static int nftnl_expr_flow_parse(struct nftnl_expr *e, struct nlattr *attr)
-+{
-+ struct nftnl_expr_flow *flow = nftnl_expr_data(e);
-+ struct nlattr *tb[NFTA_FLOW_MAX+1] = {};
-+ int ret = 0;
-+
-+ if (mnl_attr_parse_nested(attr, nftnl_expr_flow_cb, tb) < 0)
-+ return -1;
-+
-+ if (tb[NFTA_FLOW_TABLE_NAME]) {
-+ flow->table_name =
-+ strdup(mnl_attr_get_str(tb[NFTA_FLOW_TABLE_NAME]));
-+ if (!flow->table_name)
-+ return -1;
-+ e->flags |= (1 << NFTNL_EXPR_FLOW_TABLE_NAME);
-+ }
-+
-+ return ret;
-+}
-+
-+static int
-+nftnl_expr_flow_json_parse(struct nftnl_expr *e, json_t *root,
-+ struct nftnl_parse_err *err)
-+{
-+#ifdef JSON_PARSING
-+ const char *table_name;
-+
-+ table_name = nftnl_jansson_parse_str(root, "flowtable", err);
-+ if (table_name != NULL)
-+ nftnl_expr_set_str(e, NFTNL_EXPR_FLOW_TABLE_NAME, table_name);
-+
-+ return 0;
-+#else
-+ errno = EOPNOTSUPP;
-+ return -1;
-+#endif
-+}
-+
-+static int nftnl_expr_flow_export(char *buf, size_t size,
-+ const struct nftnl_expr *e, int type)
-+{
-+ struct nftnl_expr_flow *l = nftnl_expr_data(e);
-+ NFTNL_BUF_INIT(b, buf, size);
-+
-+ if (e->flags & (1 << NFTNL_EXPR_FLOW_TABLE_NAME))
-+ nftnl_buf_str(&b, type, l->table_name, SET);
-+
-+ return nftnl_buf_done(&b);
-+}
-+
-+static int nftnl_expr_flow_snprintf_default(char *buf, size_t size,
-+ const struct nftnl_expr *e)
-+{
-+ int remain = size, offset = 0, ret;
-+ struct nftnl_expr_flow *l = nftnl_expr_data(e);
-+
-+ ret = snprintf(buf, remain, "flowtable %s ", l->table_name);
-+ SNPRINTF_BUFFER_SIZE(ret, remain, offset);
-+
-+ return offset;
-+}
-+
-+static int nftnl_expr_flow_snprintf(char *buf, size_t size, uint32_t type,
-+ uint32_t flags, const struct nftnl_expr *e)
-+{
-+ switch(type) {
-+ case NFTNL_OUTPUT_DEFAULT:
-+ return nftnl_expr_flow_snprintf_default(buf, size, e);
-+ case NFTNL_OUTPUT_XML:
-+ case NFTNL_OUTPUT_JSON:
-+ return nftnl_expr_flow_export(buf, size, e, type);
-+ default:
-+ break;
-+ }
-+ return -1;
-+}
-+
-+static void nftnl_expr_flow_free(const struct nftnl_expr *e)
-+{
-+ struct nftnl_expr_flow *flow = nftnl_expr_data(e);
-+
-+ xfree(flow->table_name);
-+}
-+
-+static bool nftnl_expr_flow_cmp(const struct nftnl_expr *e1,
-+ const struct nftnl_expr *e2)
-+{
-+ struct nftnl_expr_flow *l1 = nftnl_expr_data(e1);
-+ struct nftnl_expr_flow *l2 = nftnl_expr_data(e2);
-+ bool eq = true;
-+
-+ if (e1->flags & (1 << NFTNL_EXPR_FLOW_TABLE_NAME))
-+ eq &= !strcmp(l1->table_name, l2->table_name);
-+
-+ return eq;
-+}
-+
-+struct expr_ops expr_ops_flow = {
-+ .name = "flow_offload",
-+ .alloc_len = sizeof(struct nftnl_expr_flow),
-+ .max_attr = NFTA_FLOW_MAX,
-+ .free = nftnl_expr_flow_free,
-+ .cmp = nftnl_expr_flow_cmp,
-+ .set = nftnl_expr_flow_set,
-+ .get = nftnl_expr_flow_get,
-+ .parse = nftnl_expr_flow_parse,
-+ .build = nftnl_expr_flow_build,
-+ .snprintf = nftnl_expr_flow_snprintf,
-+ .json_parse = nftnl_expr_flow_json_parse,
-+};
---- a/src/expr_ops.c
-+++ b/src/expr_ops.c
-@@ -33,6 +33,7 @@ extern struct expr_ops expr_ops_target;
- extern struct expr_ops expr_ops_dynset;
- extern struct expr_ops expr_ops_hash;
- extern struct expr_ops expr_ops_fib;
-+extern struct expr_ops expr_ops_flow;
-
- static struct expr_ops expr_ops_notrack = {
- .name = "notrack",
-@@ -69,6 +70,7 @@ static struct expr_ops *expr_ops[] = {
- &expr_ops_hash,
- &expr_ops_fib,
- &expr_ops_objref,
-+ &expr_ops_flow,
- NULL,
- };
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 16:32:39 +0000