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, data_len);
39 case NFTNL_EXPR_QUEUE_TOTAL:
40 memcpy(&queue->queues_total, data, data_len);
42 case NFTNL_EXPR_QUEUE_FLAGS:
43 memcpy(&queue->flags, data, data_len);
45 case NFTNL_EXPR_QUEUE_SREG_QNUM:
46 memcpy(&queue->sreg_qnum, data, data_len);
53nftnl_expr_queue_get(
const struct nftnl_expr *e, uint16_t type,
59 case NFTNL_EXPR_QUEUE_NUM:
60 *data_len =
sizeof(queue->queuenum);
61 return &queue->queuenum;
62 case NFTNL_EXPR_QUEUE_TOTAL:
63 *data_len =
sizeof(queue->queues_total);
64 return &queue->queues_total;
65 case NFTNL_EXPR_QUEUE_FLAGS:
66 *data_len =
sizeof(queue->flags);
68 case NFTNL_EXPR_QUEUE_SREG_QNUM:
69 *data_len =
sizeof(queue->sreg_qnum);
70 return &queue->sreg_qnum;
75static int nftnl_expr_queue_cb(
const struct nlattr *attr,
void *data)
77 const struct nlattr **tb = data;
78 int type = mnl_attr_get_type(attr);
80 if (mnl_attr_type_valid(attr, NFTA_QUEUE_MAX) < 0)
85 case NFTA_QUEUE_TOTAL:
86 case NFTA_QUEUE_FLAGS:
87 if (mnl_attr_validate(attr, MNL_TYPE_U16) < 0)
90 case NFTA_QUEUE_SREG_QNUM:
91 if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
101nftnl_expr_queue_build(
struct nlmsghdr *nlh,
const struct nftnl_expr *e)
105 if (e->flags & (1 << NFTNL_EXPR_QUEUE_NUM))
106 mnl_attr_put_u16(nlh, NFTA_QUEUE_NUM, htons(queue->queuenum));
107 if (e->flags & (1 << NFTNL_EXPR_QUEUE_TOTAL))
108 mnl_attr_put_u16(nlh, NFTA_QUEUE_TOTAL, htons(queue->queues_total));
109 if (e->flags & (1 << NFTNL_EXPR_QUEUE_FLAGS))
110 mnl_attr_put_u16(nlh, NFTA_QUEUE_FLAGS, htons(queue->flags));
111 if (e->flags & (1 << NFTNL_EXPR_QUEUE_SREG_QNUM))
112 mnl_attr_put_u32(nlh, NFTA_QUEUE_SREG_QNUM, htonl(queue->sreg_qnum));
116nftnl_expr_queue_parse(
struct nftnl_expr *e,
struct nlattr *attr)
119 struct nlattr *tb[NFTA_QUEUE_MAX+1] = {};
121 if (mnl_attr_parse_nested(attr, nftnl_expr_queue_cb, tb) < 0)
124 if (tb[NFTA_QUEUE_NUM]) {
125 queue->queuenum = ntohs(mnl_attr_get_u16(tb[NFTA_QUEUE_NUM]));
126 e->flags |= (1 << NFTNL_EXPR_QUEUE_NUM);
128 if (tb[NFTA_QUEUE_TOTAL]) {
129 queue->queues_total = ntohs(mnl_attr_get_u16(tb[NFTA_QUEUE_TOTAL]));
130 e->flags |= (1 << NFTNL_EXPR_QUEUE_TOTAL);
132 if (tb[NFTA_QUEUE_FLAGS]) {
133 queue->flags = ntohs(mnl_attr_get_u16(tb[NFTA_QUEUE_FLAGS]));
134 e->flags |= (1 << NFTNL_EXPR_QUEUE_FLAGS);
136 if (tb[NFTA_QUEUE_SREG_QNUM]) {
137 queue->sreg_qnum = ntohl(mnl_attr_get_u32(tb[NFTA_QUEUE_SREG_QNUM]));
138 e->flags |= (1 << NFTNL_EXPR_QUEUE_SREG_QNUM);
145nftnl_expr_queue_snprintf(
char *buf,
size_t remain,
146 uint32_t flags,
const struct nftnl_expr *e)
149 uint16_t total_queues;
152 if (e->flags & (1 << NFTNL_EXPR_QUEUE_NUM)) {
153 total_queues = queue->queuenum + queue->queues_total - 1;
155 ret = snprintf(buf + offset, remain,
"num %u", queue->queuenum);
156 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
158 if (queue->queues_total && total_queues != queue->queuenum) {
159 ret = snprintf(buf + offset, remain,
"-%u", total_queues);
160 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
163 ret = snprintf(buf + offset, remain,
" ");
164 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
167 if (e->flags & (1 << NFTNL_EXPR_QUEUE_SREG_QNUM)) {
168 ret = snprintf(buf + offset, remain,
"sreg_qnum %u ",
170 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
173 if (e->flags & (1 << NFTNL_EXPR_QUEUE_FLAGS)) {
174 if (queue->flags & (NFT_QUEUE_FLAG_BYPASS)) {
175 ret = snprintf(buf + offset, remain,
"bypass ");
176 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
178 if (queue->flags & (NFT_QUEUE_FLAG_CPU_FANOUT)) {
179 ret = snprintf(buf + offset, remain,
"fanout ");
180 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
186static struct attr_policy queue_attr_policy[__NFTNL_EXPR_QUEUE_MAX] = {
187 [NFTNL_EXPR_QUEUE_NUM] = { .maxlen =
sizeof(uint16_t) },
188 [NFTNL_EXPR_QUEUE_TOTAL] = { .maxlen =
sizeof(uint16_t) },
189 [NFTNL_EXPR_QUEUE_FLAGS] = { .maxlen =
sizeof(uint16_t) },
190 [NFTNL_EXPR_QUEUE_SREG_QNUM] = { .maxlen =
sizeof(uint32_t) },
193struct expr_ops expr_ops_queue = {
196 .nftnl_max_attr = __NFTNL_EXPR_QUEUE_MAX - 1,
197 .attr_policy = queue_attr_policy,
198 .set = nftnl_expr_queue_set,
199 .get = nftnl_expr_queue_get,
200 .parse = nftnl_expr_queue_parse,
201 .build = nftnl_expr_queue_build,
202 .output = nftnl_expr_queue_snprintf,