14 #include <arpa/inet.h> 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;
30 static 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));
55 nftnl_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;
77 static 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)
103 nftnl_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));
118 nftnl_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);
146 static int nftnl_expr_queue_snprintf_default(
char *buf,
size_t len,
147 const struct nftnl_expr *e)
150 int ret, remain = len, offset = 0;
151 uint16_t total_queues;
153 if (e->flags & (1 << NFTNL_EXPR_QUEUE_NUM)) {
154 total_queues = queue->queuenum + queue->queues_total - 1;
156 ret = snprintf(buf + offset, len,
"num %u", queue->queuenum);
157 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
159 if (queue->queues_total && total_queues != queue->queuenum) {
160 ret = snprintf(buf + offset, len,
"-%u", total_queues);
161 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
164 ret = snprintf(buf + offset, len,
" ");
165 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
168 if (e->flags & (1 << NFTNL_EXPR_QUEUE_SREG_QNUM)) {
169 ret = snprintf(buf + offset, len,
"sreg_qnum %u ",
171 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
174 if (e->flags & (1 << NFTNL_EXPR_QUEUE_FLAGS)) {
175 if (queue->flags & (NFT_QUEUE_FLAG_BYPASS)) {
176 ret = snprintf(buf + offset, len,
"bypass ");
177 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
179 if (queue->flags & (NFT_QUEUE_FLAG_CPU_FANOUT)) {
180 ret = snprintf(buf + offset, len,
"fanout ");
181 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
188 nftnl_expr_queue_snprintf(
char *buf,
size_t len, uint32_t type,
189 uint32_t flags,
const struct nftnl_expr *e)
192 case NFTNL_OUTPUT_DEFAULT:
193 return nftnl_expr_queue_snprintf_default(buf, len, e);
194 case NFTNL_OUTPUT_XML:
195 case NFTNL_OUTPUT_JSON:
202 struct expr_ops expr_ops_queue = {
205 .max_attr = NFTA_QUEUE_MAX,
206 .set = nftnl_expr_queue_set,
207 .get = nftnl_expr_queue_get,
208 .parse = nftnl_expr_queue_parse,
209 .build = nftnl_expr_queue_build,
210 .snprintf = nftnl_expr_queue_snprintf,