16#include <linux/netfilter/nf_tables.h>
19#include <libmnl/libmnl.h>
20#include <libnftnl/expr.h>
21#include <libnftnl/rule.h>
24 enum nft_registers sreg_qnum;
26 uint16_t queues_total;
30static int nftnl_expr_queue_set(
struct nftnl_expr *e, uint16_t type,
31 const void *data, uint32_t data_len)
36 case NFTNL_EXPR_QUEUE_NUM:
37 memcpy(&queue->queuenum, data,
sizeof(queue->queuenum));
39 case NFTNL_EXPR_QUEUE_TOTAL:
40 memcpy(&queue->queues_total, data,
sizeof(queue->queues_total));
42 case NFTNL_EXPR_QUEUE_FLAGS:
43 memcpy(&queue->flags, data,
sizeof(queue->flags));
45 case NFTNL_EXPR_QUEUE_SREG_QNUM:
46 memcpy(&queue->sreg_qnum, data,
sizeof(queue->sreg_qnum));
55nftnl_expr_queue_get(
const struct nftnl_expr *e, uint16_t type,
61 case NFTNL_EXPR_QUEUE_NUM:
62 *data_len =
sizeof(queue->queuenum);
63 return &queue->queuenum;
64 case NFTNL_EXPR_QUEUE_TOTAL:
65 *data_len =
sizeof(queue->queues_total);
66 return &queue->queues_total;
67 case NFTNL_EXPR_QUEUE_FLAGS:
68 *data_len =
sizeof(queue->flags);
70 case NFTNL_EXPR_QUEUE_SREG_QNUM:
71 *data_len =
sizeof(queue->sreg_qnum);
72 return &queue->sreg_qnum;
77static int nftnl_expr_queue_cb(
const struct nlattr *attr,
void *data)
79 const struct nlattr **tb = data;
80 int type = mnl_attr_get_type(attr);
82 if (mnl_attr_type_valid(attr, NFTA_QUEUE_MAX) < 0)
87 case NFTA_QUEUE_TOTAL:
88 case NFTA_QUEUE_FLAGS:
89 if (mnl_attr_validate(attr, MNL_TYPE_U16) < 0)
92 case NFTA_QUEUE_SREG_QNUM:
93 if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
103nftnl_expr_queue_build(
struct nlmsghdr *nlh,
const struct nftnl_expr *e)
107 if (e->flags & (1 << NFTNL_EXPR_QUEUE_NUM))
108 mnl_attr_put_u16(nlh, NFTA_QUEUE_NUM, htons(queue->queuenum));
109 if (e->flags & (1 << NFTNL_EXPR_QUEUE_TOTAL))
110 mnl_attr_put_u16(nlh, NFTA_QUEUE_TOTAL, htons(queue->queues_total));
111 if (e->flags & (1 << NFTNL_EXPR_QUEUE_FLAGS))
112 mnl_attr_put_u16(nlh, NFTA_QUEUE_FLAGS, htons(queue->flags));
113 if (e->flags & (1 << NFTNL_EXPR_QUEUE_SREG_QNUM))
114 mnl_attr_put_u32(nlh, NFTA_QUEUE_SREG_QNUM, htonl(queue->sreg_qnum));
118nftnl_expr_queue_parse(
struct nftnl_expr *e,
struct nlattr *attr)
121 struct nlattr *tb[NFTA_QUEUE_MAX+1] = {};
123 if (mnl_attr_parse_nested(attr, nftnl_expr_queue_cb, tb) < 0)
126 if (tb[NFTA_QUEUE_NUM]) {
127 queue->queuenum = ntohs(mnl_attr_get_u16(tb[NFTA_QUEUE_NUM]));
128 e->flags |= (1 << NFTNL_EXPR_QUEUE_NUM);
130 if (tb[NFTA_QUEUE_TOTAL]) {
131 queue->queues_total = ntohs(mnl_attr_get_u16(tb[NFTA_QUEUE_TOTAL]));
132 e->flags |= (1 << NFTNL_EXPR_QUEUE_TOTAL);
134 if (tb[NFTA_QUEUE_FLAGS]) {
135 queue->flags = ntohs(mnl_attr_get_u16(tb[NFTA_QUEUE_FLAGS]));
136 e->flags |= (1 << NFTNL_EXPR_QUEUE_FLAGS);
138 if (tb[NFTA_QUEUE_SREG_QNUM]) {
139 queue->sreg_qnum = ntohl(mnl_attr_get_u32(tb[NFTA_QUEUE_SREG_QNUM]));
140 e->flags |= (1 << NFTNL_EXPR_QUEUE_SREG_QNUM);
147nftnl_expr_queue_snprintf(
char *buf,
size_t remain,
148 uint32_t flags,
const struct nftnl_expr *e)
151 uint16_t total_queues;
154 if (e->flags & (1 << NFTNL_EXPR_QUEUE_NUM)) {
155 total_queues = queue->queuenum + queue->queues_total - 1;
157 ret = snprintf(buf + offset, remain,
"num %u", queue->queuenum);
158 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
160 if (queue->queues_total && total_queues != queue->queuenum) {
161 ret = snprintf(buf + offset, remain,
"-%u", total_queues);
162 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
165 ret = snprintf(buf + offset, remain,
" ");
166 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
169 if (e->flags & (1 << NFTNL_EXPR_QUEUE_SREG_QNUM)) {
170 ret = snprintf(buf + offset, remain,
"sreg_qnum %u ",
172 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
175 if (e->flags & (1 << NFTNL_EXPR_QUEUE_FLAGS)) {
176 if (queue->flags & (NFT_QUEUE_FLAG_BYPASS)) {
177 ret = snprintf(buf + offset, remain,
"bypass ");
178 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
180 if (queue->flags & (NFT_QUEUE_FLAG_CPU_FANOUT)) {
181 ret = snprintf(buf + offset, remain,
"fanout ");
182 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
188struct expr_ops expr_ops_queue = {
191 .max_attr = NFTA_QUEUE_MAX,
192 .set = nftnl_expr_queue_set,
193 .get = nftnl_expr_queue_get,
194 .parse = nftnl_expr_queue_parse,
195 .build = nftnl_expr_queue_build,
196 .output = nftnl_expr_queue_snprintf,